From: Chet Ramey Date: Tue, 6 Mar 2012 02:18:11 +0000 (-0500) Subject: bash-20120224 remove leftover and stray files X-Git-Tag: bash-4.3-alpha~79 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=09cd2889c97a17b1d39b130a8574a54057bc12b6;p=thirdparty%2Fbash.git bash-20120224 remove leftover and stray files --- diff --git a/CWRU/CWRU.chlog~ b/CWRU/CWRU.chlog~ deleted file mode 100644 index 8e6bd1542..000000000 --- a/CWRU/CWRU.chlog~ +++ /dev/null @@ -1,13451 +0,0 @@ - 7/27/2004 - --------- - -[bash-3.0 released] - - 7/28 - ---- -array.c - - in array_insert(), make sure the value to be added is non-NULL before - calling savestring() on it - -builtins/reserved.def - - fix description of `CDPATH' - -lib/readline/display.c - - when expanding a prompt that spans multiple lines with embedded - newlines, set prompt_physical_chars from the portion after the - final newline, not the preceding portion. Bug reported by - "Ralf S. Engelschall" - -make_cmd.c - - explicitly declare `lineno' in function prologue for make_case_command - -builtins/evalfile.c - - include `trap.h' for declaration for run_return_trap - -bashline.c - - fix a `return' without a value in enable_hostname_completion - -general.c - - include test.h for extern declaration for test_eaccess - -externs.h - - add declaration for zcatfd - -tests/{history,histexp}.tests - - unset HISTFILESIZE to avoid problems if a value of 0 is inherited - from the environment - - 7/30 - ---- -bashline.c - - small changes to glob_expand_word to perform tilde expansion before - attempting globbing - -builtins/Makefile.in - - fix the install-help target to not cd into the `helpfiles' - subdirectory, so a value of $INSTALL_DATA containing a relative - pathname (e.g., .././support/install.sh) remains valid - - 7/31 - ---- -subst.c - - new function, mbstrlen(s), returns length of a multibyte character - string - -include/shmbutil.h - - new macro, MB_STRLEN(s), calls mbstrlen or STRLEN as appropriate - -builtins/trap.def - - small change so that a first argument that's a valid signal number - (digits only -- no symbolic names) will be treated as a signal and - reverted back to the original handling disposition. Fixes debian - complaints - -subst.c - - call MB_STRLEN instead of STRLEN where appropriate in - parameter_brace_expand_length to handle multibyte characters properly - - call MB_STRLEN instead of strlen in verify_substring_values so that - negative substrings of strings with multibyte chars work properly - - 8/1 - --- -jobs.c - - describe_pid needs to write to stderr, not stdout (POSIX) - - start_job, since it's only used by builtins (fg/bg), needs to write - its output to stdout, not stderr (POSIX) - -sig.c - - add an `orig_flags' member to struct terminating_signal so the - original signal handling flags (SA_RESTART, etc.) can be preserved - on POSIX systems - - make sure to preserve the signal flags state in - initialize_terminating_signals and reset them for child processes - in reset_terminating_signals - -builtins/fc.def - - fixed an off-by-one error that caused `fc -l' to list one too many - history entries - - in posix mode, `fc' should not list any indication as to whether or - not history lines have been modified (POSIX) - - when in posix mode, the default editor for `fc' should be `ed' (POSIX) - -doc/bashref.texi - - updated the description of `trap' behavior when given a first - argument that is a valid signal number - - noted that `fc -l' won't indicate whether a history entry has been - modified if the shell is in posix mode - -builtins/command.def - - fixed bug: `command -v' is supposed to be silent if a command is not - found - -builtins/hash.def - - `hash' should print its `hash table empty' message to stderr - -lib/readline/misc.c - - back out 7/7 change to _rl_maybe_save_line; it breaks emacs-mode ^P - -general.c - - changed base_pathname so that it will return reasonable results for - non-absolute pathnames -- this is what is intended by all of its - callers - -arrayfunc.c - - fix array_variable_part to return NULL if it finds an invisible - variable in the hash table. Fixes seg fault caused by referring to - unset local variable using array notation - -{locale,variables}.c - - support LC_TIME as a special locale variable so HISTTIMEFORMAT tracks - the current locale - - 8/2 - --- -variables.c - - fixed small memory leak in makunbound() when a local array variable - is unset. Fix from William Park - -lib/readline/display.c - - fixed a problem when computing the number of invisible characters on - the first line of a prompt whose length exceeds the screen width - (should only happen when invisible characters occur after the - line wrap). Bug reported by agriffis@gentoo.org - -builtins/command.def - - `command -V' passes a new flag, CDESC_ABSPATH, which means to convert - to an absolute path - -builtins/type.def - - in posix mode, `type' and `command -v/-V' should not report - non-executable files, even if the execution code will attempt to - run them. Other posix shells do this - -doc/bashref.texi - - add note to POSIX Mode section describing behavior of type and command - when finding a non-executable file - -execute_cmd.c - - force extended_glob to 1 before calling binary_test in - execute_cond_node so that the right extended pattern matching gets - performed - - 8/3 - --- -braces.c - - make sure lhs[0] and rhs[0] are cast to `unsigned char' so chars - with values > 128 are handled correctly - -builtins/printf.def - - change bexpand() and printstr() to handle strings with a leading - '\0' whose length is non-zero, since that's valid input for the - `%b' format specifier - -subst.c - - fix a couple of instances of find_variable that didn't check the - result for an invisible variable - -variables.c - - BASH_ARGC, BASH_ARGV, BASH_SOURCE, BASH_LINENO no longer created as - invisible vars - -pcomplete.c - - make sure COMP_WORDS is not invisible when bind_comp_words returns - - ditto for COMPREPLY in gen_shell_function_matches - - 8/4 - --- -braces.c - - fix problem where ${ was ignored but did not increment the open - brace count. Bug reported by Tim Waugh - -variables.c - - if make_local_variable finds a variable in the correct context in - the right variable scope, make sure it's not invisible before - returning it - - 8/5 - --- -builtins/trap.def - - fixed usage message to show `action' as not optional, though it - actually is when not in posix mode (for a single argument) - - 8/7 - --- -configure.in - - kfreebsd-gnu has had its sbrk() problems fixed, and no longer needs - to be configured --without-gnu-malloc - -lib/readline/vi_mode.c - - in rl_vi_search, free any saved history line before starting the - search, so failure leaves you at that line, not the last line in - the history (assuming the current line is not the last history line). - Fix from llattanzi@apple.com to replace fix of 7/7 - - 8/9 - --- -support/Makefile.in - - renamed `mostly-clean' target to `mostlyclean' - - 8/11 - ---- -lib/readline/vi_mode.c - - make same change for EOL in multibyte character case of - rl_vi_change_char - - 8/12 - ---- -subst.c - - in verify_substring_values, fix off-by-one error checking bounds of - `offset', esp. in array values (e.g., getting the highest element - of an array) - - 8/16 - ---- -aclocal.m4 - - change BASH_CHECK_DEV_FD to make sure that file descriptors > 2 are - accessible via /dev/fd, unlike FreeBSD 5.x - -lib/sh/strftime.c - - make sure `zone' is initialized with gettimeofday before it is used - - work around HPUX lack of `altzone' and differing definitions of - `timezone' - -lib/malloc/malloc.c - - internal_memalign and memalign now take a `size_t' as their first - argument, which seems to be the prevailing standard - -lib/malloc/{malloc.c,shmalloc.h} - - change sh_memalign to take a `size_t' as its first argument - -builtins/echo.def - - if posixly_correct and xpg_echo are both set, don't try to interpret - any arguments at all, as POSIX/XOPEN requires (fix inspired by Paul - Eggert) - -doc/bashref.texi - - amend description of bash posix mode to include new echo behavior - -builtins/fg_bg.def - - allow bg to take multiple job arguments, as posix seems to specify, - placing them all in the background, returning the status of the last - one as the status of `bg' - -lib/readline/vi_mode - - fix _rl_vi_change_mbchar_case (multibyte-char version of `~' - command) to have the right behavior at EOL -- handle case where vi - mode backs up at the end of the line - - 8/18 - ---- -array.c - - check for an empty array in array_rshift before shifting elements - and adjusting max_index - - check for null array in array_subrange - -jobs.c - - fix raw_job_exit_status to not ignore exit status of the last - process in the pipeline when `set -o pipefail' is enabled - - 8/19 - ---- -lib/readline/mbutil.c - - make sure _rl_find_next_mbchar_internal has a valid multibyte - character before it checks whether or not it's a zero-width - wide character and adjusts point accordingly - - 8/24 - ---- -bashline.c - - new function, bash_directory_expansion, duplicates the expansions - performed on the directory name by rl_filename_completion_function - - call bash_directory_expansion in command_word_completion_function - if we decide we're doing tilde expansion (and any other - canonicalization) on the directory name being completed - - 8/25 - ---- -configure.in - - use new-style AC_CHECK_HEADER to check for sys/ptem.h (which requires - sys/stream.h). The correct checks are in the code, but autoconf - complains if sys/stream.h is not included, rather than simply - checking for the header's presence - - 8/26 - ---- -builtins/hash.def - - fix a bug that prevented `hash -d' from working right (as soon as - hash removed a command from the table, the bug caused it to be added - right back) - - 8/27 - ---- -doc/{bash.1,bashref.texi} - - explicitly note that conditional primaries that operate on files - operate on the targets of symbolic links rather than the links - themselves - - 8/30 - ---- -lib/readline/display.c - - fix multibyte calculation of `physchars' in prompt expansion, to - handle double-width multibyte characters correctly - - changes to rl_redisplay to handle prompts longer than the screenwidth - that might contain double-width multibyte characters. Fixes from - Tomohiro Kubota - - 9/6 - --- -subst.c - - change word_list_split to avoid really bad behavior caused by calling - list_append for each split word -- as the list gets long, you have - to traverse it every time. Keep a pointer to the end of the list and - and just tack onto it - - 9/8 - --- -lib/readline/complete.c - - change fnprint to calculate the displayed width of a filename in - the same way as fnwidth - -subst.c - - in verify_substring_values, when expanding ${array[@]:offset}, make - sure negative offsets count from one greater than the array's - maximum index so things like ${x[@}: -1} work to give the last element - (requires fixing array tests) - -builtins/common.c - - new error function, sh_wrerror(), for builtins to call when a write - error occurs - -builtins/common.h - - extern declaration for sh_wrerror() - -builtins/cd.def - - change builtin_error call to use sh_wrerror() - -builtins/echo.def - - report write errors with sh_wrerror() instead of just returning - failure - -builtins/printf.def - - change printstr to return failure (-1) or success (0) indication - rather than void - - report write errors when printstr() fails, return failure - - if any of the PF/printf calls fail, report write error and return - failure - -execute_cmd.c - - change execute_in_subshell so the subshell command inherits the - command timing flags from the enclosing COMMAND * - - 9/11 - ---- -[prayers for the victims of 9/11/2001] - -lib/sh/strnlen.c - - new file, implementation of GNU libc extension function strnlen - -lib/sh/Makefile.in, {config.h,configure,Makefile}.in, MANIFEST - - changes for strnlen - -configure.in - - version changed to 3.1-devel - -doc/bash.1, lib/readline/doc/rluser.texi - - added description of `-o plusdirs' to complete/compgen (thanks, - Arnold) - -parse.y - - new parser_state flag, PST_ASSIGNOK, if set indicates we're parsing - arguments to a builtin that accepts assignment statement arguments - - turn on PST_ASSIGNOK in read_token_word when appropriate - - turn off PST_ASSIGNOK in read_token when appropriate - - don't attempt to parse a compound assignment specially unless we're - in a position where an assignment statement is acceptable, or - PST_ASSIGNOK is set - - 9/13 - ---- -variables.c - - make BASH_ARGC, BASH_ARGV, BASH_LINENO, and BASH_SOURCE - non-unsettable, since the shell uses those values internally - -expr.c - - make exponentiation right-associative, as is apparently correct - - 9/16 - ---- -arrayfunc.c - - make sure convert_var_to_array marks the environment as needing - recreation if the converted variable was exported - - 9/17 - ---- -braces.c - - mark ${ as introducing an additional level of braces only if it's - not in a quoted string -- quoted strings are handled before brace - matching is done - -parse.y - - fixed an obscure problem in history_delimiting_chars where the `in' - in a case statement could have a semicolon added after it, if the - `case word' was on a previous line - -support/config.guess - - support for newest versions of tandem non-stop kernel - -lib/readline/display.c - - in compute_lcd_of_matches, explicitly cast `text' to `char *' before - passing it to rl_filename_dequoting_function - -lib/readline/terminal.c - - bind the key sequence sent by the keypad `delete' key to delete-char - (same as ^D in emacs mode) - -builtins/ulimit.def - - in print_all_limits, don't print anything if get_limit returns - -1/EINVAL, indicating that the kernel doesn't support that particular - limit - - add -i (max number of pending signals), -q (max size of posix msg - queues), -x (max number of file locks) for systems (Linux) that - support them - -doc/{bash.1,bashref.texi} - - fix description of correspondence between FUNCNAME, BASH_LINENO, - and BASH_SOURCE indices in description of BASH_LINENO - - 9/18 - ---- -lib/sh/shquote.c - - don't quote CTLESC and CTLNUL with CTLESC in sh_backslash_quote, as - long as the resultant string never gets sent to the word expansion - functions without going through the shell parser - -externs.h - - add extern declarations for strnlen and strpbkrk from lib/sh - -subst.[ch] - - changes to handle case where IFS consists of multibyte characters. - Changed: string_extract_verbatim, split_at_delims, - string_list_dollar_star, string_list_dollar_at, list_string, - get_word_from_string, setifs - - 9/19 - ---- -mailcheck.c - - change file_mod_date_changed to reset the cached mail file data if - the file size drops to zero - -lib/readline/complete.c - - change append_to_match so that a non-zero value for - rl_completion_suppress_append will cause no `/' to be appended to a - directory name - -bashline.c - - experimental change to suppress appending a slash for a completed - filename that is found in PATH as well as a directory in the current - directory under certain circumstances: a single instance found in - $PATH when `.' is not in $PATH, and multiple instances found in the - $PATH, even when `.' is in the $PATH - - 9/24 - ---- -command.h - - new word flag: W_ASSIGNRHS, means word is rhs of assignment statement - - new word flag: W_NOTILDE, means word is not to be tilde expanded - - new word flag (internal): W_ITILDE, means the next character is a - tilde that should be expanded - -general.c - - new set of tilde suffixes for use when parsing the RHS of an - assignment statement and =~ should not be subject to tilde expansion - - if ASSIGN_P argument to bash_tilde_expand is 2, use tilde prefixes - for parsing RHS of assignment statement - -general.[ch] - - new function bash_tilde_find_word, drop-in replacement for - tilde_find_word - -subst.c - - call bash_tilde_expand with secord argument of 2 when expanding rhs - of an assignment statement, so tildes after second and subsequent - `=' in an assignment are not expanded - - new function, expand_string_assignment, to expand the rhs of an - assignment statement - - add `~' to EXP_CHAR, the characters that will cause the word - expansion functions to be called - - move tilde expansion into expand_word_internal instead of many - different calls to bash_tilde_expand scattered across different - functions. NOTE: This means that double quotes surrounding a - {paramOPword} expansion will cause tilde expansion to NOT be - performed on `word'. I think this is right, what POSIX specifies, - and consistent with the behavior of other characters in the rhs - -execute_cmd.c - - take out calls to bash_tilde_expand before calling word expansion - functions - - 9/26 - ---- -execute_cmd.c - - make sure to call UNBLOCK_CHILD before returning on a pipe creation - failure in execute_pipeline - - 9/27 - ---- -variables.c - - change get_bash_command to deal with the_printed_command_except_trap - being NULL - -execute_cmd.c - - fix execute_simple_command to deal with the_printed_command being - NULL when assigning to the_printed_command_except_trap -- fixes - seg fault in savestring() - -parse.y - - change the parser so that the closing `)' in a compound variable - assignment delimits a token -- ksh93 does it this way - -doc/{bash.1,bashref.texi} - - change description of tilde expansion to note that expansion is - attempted only after the first =~ in an assignment statement - -builtins/declare.def - - when assigning to an array variable with declare -a x=(...), make - sure the last character in the rhs of the variable assignment is - `)', not just that it appears somewhere - - 9/28 - ---- -command.h - - add a `W_NOEXPAND' flag to inhibit all expansion except quote removal - - add a `W_COMPASSIGN' flag to denote a word is a compound assignment - statement - -parse.y - - set W_COMPASSIGN on words that appear to be compound assignments - -subst.c - - pass W_NOXPAND and W_COMPASSIGN through end of expand_word_internal - -subst.[ch] - - new function, expand_assignment_string_to_string, calls - expand_string_assignment and then string_list on the result - -variables.c - - assign_in_env now calls expand_assignment_string_to_string - - 9/30 - ---- -builtins/common.c - - change get_job_spec so the null job `%' once again means the current - job - - 10/1 - ---- -subst.c - - do_assignment_internal now takes a WORD_DESC * as its first - argument, and uses its `word' member as the assignment string - - change expand_word_list_internal to call do_word_assignment instead - of do_assignment, passing it `word' instead of, e.g., `word->word' - - change extract_array_assignment_list to just return the passed - string minus a trailing `)' if the last character is a right - paren - - change do_assignment_internal to call extract_array_assignment_list - -subst.[ch] - - change do_assignment and do_assignment_no_expand to take a `char *' - instead of `const char *' first argument; change extern prototypes - - new function, do_word_assignment, takes a WORD_DESC * and calls - do_assignment_internal on it; add extern declaration with prototype - -general.h - - new typedef, sh_wassign_func_t, like sh_assign_func_t but takes a - WORD_DESC * as its first argument - -variables.[ch] - - assign_in_env now takes a WORD_DESC * as its first argument - - 10/2 - ---- -command.h - - new word flag, W_ASSNBLTIN, denotes that the word is a builtin - command (in a command position) that takes assignment statements - as arguments, like `declare' - - new word flags, W_ASSIGNARG, denotes that word is an assignment - statement given as argument to assignment builtin - -execute_cmd.c - - set W_ASSNBLTIN flag in fix_assignment_words if necessary (if there - are any arguments that are assignment statements) - - set W_ASSIGNARG flag in fix_assignment_words if necessary - -subst.c - - new function, do_compound_assignment, encapsulates the necessary - code to perform a compound array assignment (including creation of - local variables); called from do_assignment_internal - - to fix the double-expansion problem with compound array assignments - that are arguments to builtins like `declare', changed - shell_expand_word_list to treat those arguments like assignment - statements (with proper creation of local variables inside shell - functions) and pass the attribute-setting portion of the statement - onto the builtin. This is what ksh93 appears to do, from inspection - of the `ksh93 -x' output - -execute_cmd.c - - fix execute_simple_command: in case of pipeline or async command, - when forking early, set `subshell_environment' so that it can contain - both SUBSHELL_PIPE and SUBSHELL_ASYNC -- the two should not be - mutually exclusive. Fixes bug reported by pierre.humblet@ieee.org - - remove references to last_pid, old_command_subst_pid; use NO_PID as - a sentinel value to decide whether or not a child process has been - created and needs to be waited for. Submitted by - pierre.humblet@ieee.org to fix recycling-pid problem on cygwin - -doc/{bash.1,bashref.texi} - - fixed documentation of `@(pattern)' extended globbing operator -- - it succeeds if the string matches one of the patterns, not exactly - one. This is what ksh93 does, too - -lib/readline/complete.c - - fixed rl_menu_complete so that a negative argument cycles backwards - through the list - - 10/3 - ---- -subst.c - - use W_COMPASSIGN flag in do_assignment_internal instead of deciding - lexically which assignments are compound array assignments - - 10/6 - ---- -support/shobj-conf - - additions for System V.5 from Boyd Gerber - -subst.c - - in command_substitute, if subshell_environment includes - SUBSHELL_ASYNC, call make_child with the `async_p' argument set to - non-zero. This keeps command substitutions for async commands or - pipelines from trying to give the terminal back to the shell's - pgrp. make sure to save and restore last_asynchronous_pid. Fix - suggested by - - 10/7 - ---- -config.h.in - - add a placeholder definition for WCONTINUED_BROKEN - - 10/9 - ---- -aclocal.m4 - - add BASH_CHECK_WCONTINUED, checks for glibc bug where WCONTINUED is - defined but rejected as invalid by waitpid(2) - -configure.in - - add call to BASH_CHECK_WCONTINUED, defines WCONTINUED_BROKEN - -redir.c - - experimental change to add_undo_redirect to save manipulations to - file descriptors >= SHELL_FD_BASE (10) on the list of redirections - to be undone even if `exec' causes the list to be discarded - -doc/{bash.1,bashref.texi} - - note that redirections using file descriptors > 9 should be used - carefully, because they might conflict with file descriptors the - shell uses internally - - 10/11 - ----- -parse.y - - fix pipeline_command production to handle case where `pipeline' - as `argument' of `!' or `time' is null (e.g., a syntax error not - handled by the grammar) - - 10/13 - ----- -lib/readline/readline.c - - new internal variable, _rl_bind_stty_chars; if non-zero, bind the - terminal special characters to readline equivalents at startup - - change readline_default_bindings() and reset_default_bindings() to - understand _rl_bind_stty_chars - -lib/readline/rlprivate.h - - new extern declaration for _rl_bind_stty_chars - -lib/readline/rltty.c - - change rl_prep_terminal to add support for _rl_bind_stty_chars - - 10/15 - ----- -lib/readline/bind.c - - new bindable variable, `bind-tty-special-chars', bound to value of - _rl_bind_stty_chars - -doc/bash.1,lib/readline/doc/{readline.3,rluser.texi} - - documented new readline variable `bind-tty-special-chars' - -builtins/pushd.def - - make the first check for option `--' skip the rest of option - checking - - 10/16 - ----- -lib/readline/shell.c - - change sh_set_lines_and_columns to prefer setenv, which has - predictable memory allocation behavior, to putenv, which does not - - 10/19 - ----- -variables.c - - change push_exported_var so that a tempenv variable has to have the - export attribute set (which they all do -- something to look at) and - the `propagate' attribute set to be propagated down to the next - scope - -execute_cmd.c - - change execute_builtin so that if CMD_COMMAND_BUILTIN is set in the - passed flags argument, call pop_scope with a value that says the - builtin is not special, since `command' means that preceding variable - assignments don't persist in the environment. Fixes problem with - variable assignments preceding command preceding special builtin - keeping those variable assignments around (when in posix mode) - - 10/20 - ----- -lib/sh/shquote.c - - new function, sh_mkdoublequoted, brackets a given string with - double quotes and returns a new string. Flags argument, if non- - zero, means to quote embedded double quotes with backslashes - -externs.h - - new extern declaration for sh_mkdoublequoted - -parse.y - - use sh_mkdoublequoted after calling localeexpand() - -lib/sh/strtrans.c - - change ansicstr to understand that (flags & 4) != 0 means to remove - backslash from unrecognized escape sequences - -general.c - - fix logic problem in assignment() that caused non-variable-starter - characters to be allowed, resulting in things like `1=xxx' creating - a variable `1' in the hash table - - 10/21 - ----- -bashline.c - - don't call programmable_completions with an assignment statement - argument - - 10/22 - ----- -lib/readline/rltty.c - - in prepare_terminal_settings, turn echoing on (readline_echoing_p) - if get_tty_settings fails because the input is not a terminal - - 10/24 - ----- -lib/readline/util.c - - include rlmbutil.h for multibyte definitions - - new function, _rl_walphabetic, wide char version of rl_alphabetic - -lib/readline/mbutil.c - - new function, _rl_char_value(buf, ind), returns value of (possibly - multibyte) character at buf[ind] - -lib/readline/rlmbutil.h - - extern defines for _rl_walphabetic and _rl_char_value for when - multibyte chars are not being used - - new wrapper definitions for _rl_find_next_mbchar (MB_NEXTCHAR) and - _rl_find_prev_mbchar (MB_PREVCHAR) that try to avoid unneeded - function calls - -lib/readline/text.c - - fix rl_foward_word to work with multibyte characters (or in a - multibyte locale) using above utility functions - - fix rl_backward_word to work with multibyte characters (or in a - multibyte locale) using above utility functions - - 10/26 - ----- -parse.y - - fix parse_matched_pair so that it doesn't swallow \ when - parsing a $'...' construct (call shell_getc with different arg) - - 10/28 - ----- -lib/glob/glob.c - - after some (compiled-in) threshold, glob_vector will stop using - alloca to allocate `struct globval's and will switch to using - malloc, with appropriate cleanup before returning - -subst.c - - don't expand tildes after `=' in expand_word_internal, even if the - W_TILDEEXP flag is set, unless it's the first tilde in a word - marked W_ASSIGNMENT - - 10/31 - ----- -lib/readline/text.c - - make sure rl_point doesn't go below 0 in rl_delete_horizontal_space - (from SUSE, but not sent in) - -shell.c - - make sure shell_is_restricted skips over a single leading `-' in - the shell name (from SUSE, but not sent in) - -lib/readline/display.c - - disable `fast redisplay' at the end of the line if in a locale that - supports multibyte characters (from SUSE, but not sent in) - -lib/readline/histexpand.c - - fix a problem with finding the delimiter of a `?' substring when - compiled for multibyte characters (from SUSE, but not sent in) - - 11/1 - ---- -lib/readline/display.c - - correct some assignments to _rl_last_c_pos: when in a multibyte - locale, it's used as an absolute cursor position; when not using - multibyte characters, it's a buffer offset. I should have caught - this when the multibyte character support was donated - - 11/5 - ---- -general.c - - change `assignment()' to accept `+=' assignment operator - -arrayfunc.[ch] - - bind_array_variable and assign_array_element both take a new `flags' - argument - - assign_array_var_from_string, assign_array_from_string, and - assign_array_var_from_word_list now all take a new `flags' argument - - change assign_array_var_from_word_list to understand how to append - to an array variable - - change assign_array_var_from_string to understand how to append - to an array variable. It does not unset the previous value if - appending, allowing both old values to be changed and new ones to - be added - -subst.h - - new flag #defines to use for evaluating assignment statements - -{subst,variables}.c, builtins/{declare,read}.def - - change callers of assign_array_element and bind_array_variable - - change do_compound_assignment to understand assignment flags - - change do_assignment_internal to set assignment flags and pass them - to underlying functions - -pcomplete.c,builtins/{declare,read}.def - - fix callers of assign_array_var_from_string, assign_array_var_from_word_list - -variables.[ch] - - make_variable_value now takes a new `flags' argument - - make_variable_value now understands how to append to a particular - variable, using the old value - - bind_variable_value now takes a new `flags' argument - - change make_variable_value to understand ASS_APPEND flag - - bind_variable now takes a new `flags' argument - - bind_variable_internal now takes a new `flags' argument - -arrayfunc.c - - change callers of make_variable_value to add flags arg - -builtins/declare.def - - change callers of bind_variable_value to add flags arg - -{execute_cmd,mailcheck,pcomplete,shell,subst,variables}.c,parse.y -builtins/{cd,command,declare,getopts,read,set,setattr}.def - - change callers of bind_variable to add flags arg - -variables.c - - change callers of bind_variable_internal - - change bind_variable_internal to pass assignment flags on to - make_variable_value - - change assign_in_env to treat `var+=value' like `var=value' - -arrayfunc.c - - break code that actually constructs the new value and assigns it - to a particular array index out into a new functions: - bind_array_var_internal. This fakes out make_variable_value by - passing a dummy SHELL_VAR * so it can do proper appending and other - += processing - - changes to assign_array_var_from_string to accept and process as if - they were `standalone' assignment statements array assignment words - of the form [ind]+=val - - 11/7 - ---- -builtins/declare.def - - added support for `declare [flags] var+=value'. `Flags' are applied - before the assignment is performed, which has implications for things - like `-i' -- if -i is supplied, arithmetic evaluation and increment - will be performed - -builtins/setattr.def - - add support for `+=' assignment for rest of `assignment builtins': - export, readonly - - 11/12 - ----- -lib/readline/display.c - - make sure prompt_physical_chars and prompt_invis_chars_first_line - are reset to 0 if the prompt string passed to rl_expand_prompt is - NULL or empty - - 11/14 - ----- -{configure,config.h}.in - - check for `raise', define HAVE_RAISE if available - -lib/intl/dcigettext.c - - make sure `raise' is defined if HAVE_RAISE is not before - eval-plurah.h is included - -lib/malloc/trace.c - - put extern declaration for imalloc_fopen inside the MALLOC_TRACE - #ifdef - - 11/16 - ----- -lib/intl/Makefile.in - - make sure SHELL is defined to cpp - -lib/intl/dcigettext.c - - make sure we use getcwd() even if HAVE_GETCWD is not defined after - including config.h; if SHELL is defined, #define HAVE_GETCWD - - 11/18 - ----- -trap.[ch] - - new function, int signal_in_progress(int sig), returns TRUE if the - trap handler for signal SIG is currently executing - - 11/19 - ----- -redir.c - - slightly change do_redirection_internal to set the close-on-exec - flag for file descriptors > 2 used to save file descriptors < 2 - using explicit redirections (e.g., `exec 3>&1'). This keeps file - descriptors pointing to pipes from being left open but doesn't - change the shell's file descriptor semantics - - 11/20 - ----- -doc/{bash.1,bashref.texi} - - correct some minor typos, forwarded from doko@debian.org - - 11/22 - ----- -doc/bash.1,lib/readline/doc/{readline.3,rluser.texi} - - documented detail that yank-last-arg and yank-nth-arg use the history - arg expansion code (and, as a result, are subject to restrictions - of the history-comment character) - - 11/23 - ----- -execute_cmd.c - - changes so that BASH_COMMAND preserves its value into a DEBUG trap: - for commands, arithmetic for command expressions, select commands, - case commands, (( commands, [[ commands, simple commands - - 11/24 - ----- -doc/{bash.1,bashref.texi} - - changed description of `set' builtin slightly so that it is clear - that only variables are displayed in posix mode and that read-only - variables can't be reset by simply sourcing the output of `set' - -lib/sh/strftime.c - - don't try to redefine `inline' if it's already defined - - 11/26 - ----- -execute_cmd.c - - fix execute_function to check funcname_a after function execution, - since FUNCNAME can be changed or unset within a function - - 11/27 - ----- -builtins/evalfile.c - - make same changes as 11/26, this time to _evalfile - -execute_cmd.c - - change execute_function to run the return trap after a function - completes execution even if the shell is compiled without DEBUGGER - defined - -trap.c - - change reset_or_restore_signal_handlers so that the RETURN trap is - not inherited by command substitution when DEBUGGER is not defined - - 11/30 - ----- -lib/readline/misc.c - - fix memory leaks in _rl_free_history_entry and rl_maybe_replace_line - caused by not freeing `timestamp' member of history entry - - make sure timestamp is initialized to NULL in rl_maybe_save_line - - 12/1 - ---- -execute_cmd.c - - fix execute_function so a function calling `return' will run the - RETURN trap, if one's defined - -doc/{bash.1,bashref.texi} - - fix description of RETURN trap in various places to indicate that it's - only inherited by shell functions if function tracing is on globally - or has been enabled for that function - - fix documentation to indicate that the DEBUG and RETURN traps are - inherited under the same conditions - -execute_cmd.c - - a function does not inherit the RETURN trap if a DEBUG trap is - currently running - - 12/2 - ---- -lib/glob/xmbsrtowcs.c - - change xmbsrtowcs to handle the one case where malloc can fail - (though it should not matter) -- don't try to free a null pointer - - 12/9 - ---- -subst.c - - fix get_var_and_type to handle var[@], where `var' is a scalar - variable, identically to var -- all calling expansions can now - handle var[@] like var. Bug reported by agriffis@gentoo.org - - 12/10 - ----- -lib/readline/bind.c - - make new-style "\M-x" keybindings obey `convert-meta' settings - (bug reported by twaugh@redhat.com) - - 12/14 - ----- -builtins/set.def - - added description of `-' option to help text - -builtins/shopt.def - - fix bug that caused `gnu_errfmt' to not be compiled in unless - READLINE is defined - - 12/16 - ----- -subst.c - - fixed a typo in string_extract_verbatim in first call to MBLEN - (used `slen - 1' instead of `slen - i') - - 12/17 - ----- -subst.c - - avoid some calls to strlen if the value is only being used for - ADVANCE_CHAR and MB_CUR_MAX == 1 (since ADVANCE_CHAR doesn't need - it unless multibyte characters are possible) - - change string_extract_verbatim so it takes the length of the string - as a parameter, so we don't have to recompute the length of the same - string over and over again when doing word splitting (that kills if - it's a long string) - - 12/18 - ----- -subst.c - - in string_list_dollar_star, make sure to null-terminate the - separator if the character is longer than one byte - - 12/22 - ----- -doc/{bash.1,bashref.texi} - - changed text in quoting section explaining that double quotes do - not prevent history expansion from taking place, and that backslashes - escaping ! are not removed - - 12/28 - ----- -shell.c - - set gnu_error_format to 1 if running under emacs. This should allow - the emacs `next-error' stuff to work, at least for interactive shells - -parse.y - - change yy_stream_get to set interrupt_immediately before calling - getc_with_restart when the shell is interactive. This avoids the - synchronization problem caused by the call to QUIT in read_a_line, - which results in the first character after a SIGINT/^C to be - dropped - - 12/30 - ----- -builtins/mkbuiltins.c - - changes to write long documentation to arrays as a single string by - default, rather than an array of strings -- enabled by default - - new option, -S, to restore old behavior of writing multiple strings - for long documentation - - changes to avoid filenames written when the separate-filenames option - (-H) has been supplied being run through gettext - -configure.in - - new cofiguration option, --enable-single-help-strings (on by default), - causes help text to be stored as a single string (or smaller set than - one string per line) - -builtins/Makefile.in - - pass `-S' to mkbuiltins if single-help-strings is turned off - -doc/bashref.texi - - documented new `single-help-strings' configure option - - 1/3/2005 - -------- -jobs.c - - make wait_for return a non-zero status if the job or processed - waited for is suspended. Returns 128 + stop signal. This fixes - the problem with `echo one && sleep 5 && echo two' displaying - `two' after the sleep is suspended - - 1/5 - --- -print_cmd.c - - change indirection_level_string so the code duplicates the first - character of $PS4 to indicate the indirection level, rather than - the first byte - - 1/8 - --- -variables.c - - new special variable hook function for COMP_WORDBREAKS; sets - rl_completer_word_break_characters back to NULL when the variable - is unset - - change bind_variable_value to understand dynamic variables with - assign_function set, and handle them correctly. If the variable is - being appended to, use make_variable_value to create the new - value - - change bind_variable_internal to understand dynamic variables with - assign_function set, and handle them the same way - - RANDOM and LINENO now get the integer attribute, so appending works - as expected - - ditto for HISTCMD, MAILCHECK, OPTIND - -lib/readline/display.c - - change _rl_make_prompt_for_search to set prompt_physical_chars - appropriately - - rl_save_prompt and rl_restore_prompt save and restore - prompt_prefix_length - - change redraw_prompt to use rl_save_prompt and rl_restore_prompt - - change rl_restore_prompt to set the `save' variables back to - NULL/0 so code can check whether or not the prompt has been saved - - change rl_message and rl_clear_message to save and restore the - prompt if the caller has not already done it (using a simple - semaphore-like variable) - - change rl_message to call expand_prompt, so that local_prompt and - local_prompt prefix are set before calling the redisplay functions, - in case the prompt is longer than a screenwidth (fixes bug - reported to debian by epl@unimelb.edu.au) - -lib/readline/doc/rltech.texi - - make sure to note that rl_save_prompt should be called before - rl_message, and rl_restore_prompt before rl_clear_message - -pcomplete.c - - make sure to save and restore the parser state around the call to - execute_shell_function in gen_shell_function_matches. Fixes bug - reported by a050106.1.keeLae3x@captaincrumb.com (cute) - -lib/readline/readline.c - - fix _rl_dispatch_subseq in the case where we're recursing back up - the chain (r == -2) and we encounter a key shadowed by a keymap, - but originally bound to self-insert. Calling rl_dispatch with - ANYOTHERKEY as the first argument will call rl_insert, but with - ANYOTHERKEY (256) as the char to insert. Use the shadow keymap - and set things up to dispatch to rl_insert with the shadowed key - as the argument. Fixes the bug reported by Thomas Glanzmann - (sithglan@stud.uni-erlangen.de) - - 1/13 - ---- -command.h - - new word flag: W_HASQUOTEDNULL - -make_cmd.c - - new function to allocate a WORD_DESC * without doing anything with a - containing string: alloc_word_desc - -make_cmd.h - - extern declaration for alloc_word_desc - -dispose_cmd.c - - new function to just free a WORD_DESC * without freeing the contained - string: dispose_word_desc - -dispose_cmd.h - - extern declaration for dispose_word_desc - -subst.c - - change some places to use alloc_word_desc - - make same changes to word_list_quote_removal as were made to - word_list_split - - set W_HASQUOTEDNULL when a word is created with w->word[0] == - CTLNUL and w->word[1] == '\0' - -subst.c - - parameter_brace_expand_word now returns a WORD_DESC * -- changed - callers to understand - - parameter_brace_expand_indir now returns a WORD_DESC * -- changed - callers to understand - - parameter_brace_expand_rhs now returns a WORD_DESC * -- changed - callers to understand - - remove W_HASQUOTEDNULL from a word's flags when remove_quoted_nulls - is called on the word's enclosed string - - 1/15 - ---- -subst.c - - param_expand now returns a WORD_DESC * -- changed callers to - understand - - parameter_brace_expand now returns a WORD_DESC * -- changed - callers to understand - - in expand_word_internal, only call remove_quoted_nulls after a word - is returned with W_HASQUOTEDNULL - - changes to pass W_HASQUOTEDNULL flag out of expand_word_internal; - changed callers to call remove_quoted_nulls only if return value has - W_HASQUOTEDNULL set. This is a mostly-complete fix for the - long-standing CTLNUL confusion between a quoted null expansion and - the expansion of a variable with a literal '\177' in its value - - change string_list_dollar_at to compute the separator character the - same way as string_list_dollar_star: using the already-computed - values generated in setifs() - - when expanding unquoted $*, if $IFS is empty, check whether or not - we're eventually going to split the results (e.g., on the rhs of an - assignment statement) and concatenate the positional parameters as - if the expansion were within double quotes if we're not going to - split - -tests/iquote.tests - - test cases based on old bug reports about the quoted-null vs. 0177 - problem the recent code fixes - - 1/16 - ---- -dispose_cmd.c - - set w->word to 0 before putting a WORD_DESC * back in the cache in - dispose_word_desc; changed callers to delete those assignments - -variables.c - - change assign_random and get_random_value so that the random number - generator only gets re-seeded once in a subshell environment, and - assigning a value to RANDOM counts as seeding the generator. This - makes the sequences a little more predictable - - 1/20 - ---- -lib/readline/history.c - - fix replace_history_entry, remove_history to return NULL if - passed index is < 0 - - 1/22 - ---- -lib/sh/netconn.c - - fix isnetconn() to understand that getpeername can return ENOTCONN - to indicate that an fd is not a socket - -configure.in - - set BUILD_DIR to contain backslashes to escape any spaces in the - directory name -- this is what make will accept in targets and - prerequisites, so it's better than trying to use double quotes - - set SIZE to the appropriate value if some cross-compiling tool - chain is being used; `size' by default (can be overridden by - SIZE environment variable) - -Makefile.in - - use $(SIZE) instead of size; set SIZE from configure - - 1/31 - ---- -arrayfunc.c - - in array_value_internal, return NULL right away if the variable's - value is NULL, instead of passing a null string to add_string_to_list - - 2/1 - --- -jobs.h - - new struct to hold stats and counters for child processes and jobs - - change some uses of global and static variables to use members of - new struct (struct jobstats) - - 2/2 - --- - -jobs.[ch] - - change PRUNNING to PALIVE - - new define INVALID_JOB - - new macro get_job_by_jid(ind), currently expands to jobs[ind] - - new define J_JOBSTATE, operates on a JOB * like JOBSTATE operates on - a job index - - new function, reset_job_indices, called from delete_job if - js.j_lastj or js.j_firstj are removed - - change various functions to keep counters and stats in struct jobstats - -pcomplete.c, builtins/common.c, builtins/{exit,fg_bg,jobs,kill,wait}.def - - change global variables (e.g., job_slots) to struct members - (e.g., js.j_jobslots) - - use INVALID_JOB define where appropriate - - use get_job_by_jid and J_JOBSTATE where appropriate - -trap.c - - change reset_or_restore_signal_handler to not free the exit trap - string if the function pointer is reset_signal, which is used when - the trap strings shouldn't be freed, like in command substitution - - 2/4 - --- -jobs.c - - new function, realloc_jobs_list, copies jobs array to newly-allocated - memory shrinking (or growing) size to have next multiple of JOB_SLOTS - greater than js.j_njobs - - change compact_jobs_list to just call reap_dead_jobs and then - realloc_jobs_list, simplifying it considerably - - discard_pipeline now returns `int': the number of processes freed - - slightly changed the logic deciding whether or not to call - compact_jobs_list: now non-interactive shells will compact the - list if it reaches MAX_JOBS_IN_ARRAY in size - -parse.y - - move test for backslash-newline after pop_string in shell_getc so - that things like - - ((echo 5) \ - (echo 6)) - - work right - - 2/8 - --- -jobs.h - - new structs for holding status of exited background processes, as - POSIX specifies - - new job flag: J_ASYNC - -jobs.c - - new functions to manipulate struct holding status of exited - background processes - - new members in struct jobstats to hold pointer to last created job - and last created asynchronous job - - initialize js.c_childmax in initialize_job_control - - if the `async' arg to stop_pipeline is non-null, set the J_ASYNC - flag in the job struct - - set js.j_last_made_job and js.j_last_asynchronous_job in - stop_pipeline - - new function: find_last_proc, returns the PROCESS * to the last proc - in a job's pipeline - - changed find_last_pid to call find_last_proc - - change delete_job to call bgp_add on the last proc of the job being - deleted - - change delete_all_jobs and wait_for_background_pids to call bgp_clear - - 2/9 - --- -jobs.c - - change wait_for_single_pid to look for pid in bgpids.list (using - bgp_search()) if find_pipeline returns NULL - - 2/10 - ---- -support/shobj-conf - - change the solaris-gcc stanza so that it auto-selects the appropriate - options for ld depending on which `ld' gcc says it's going to run - - 2/11 - ---- -jobs.h - - add support for PS_RECYCLED as a process state, add PRECYCLED macro - to test it. Change PALIVE and PRUNNING macros to not count processes - in PS_RECYCLED state - -execute_cmd.c - - restore use of last_pid as sentinel value; use NO_PID as sentinel - only if RECYCLES_PIDS is defined - -jobs.c - - change find_job to return a pointer to the PROCESS the desired pid - belongs to, analogous to find_pipeline returning pointer to JOB - - change find_job callers to add extra argument - - change running_only arguments to find_pipeline and find_job to - alive_only, since we don't want recycled pids returned here and it - better describes the result - - new function find_process, calls find_pipeline and searches the - returned pipeline for the PROCESS * describing the desired pid - - in make_child, if fork() returns the same pid as the value of - last_asynchronous_pid when RECYCLES_PIDS is defined, avoid pid - aliasing by resetting last_asynchronous_pid to 1 - - use PRUNNING instead of child->running, since we, for the most - part, don't want to consider recycled pids (e.g., in make_child()) - - call find_process instead of find_pipeline in waitchld() - - use PEXITED(p) instead of testing p->running == PS_DONE - - in make_child, call bgp_delete to remove a just-created pid from the - last of saved pid statuses - - in add_process, check whether or not pid being added is already in - the_pipeline or the jobs list (using find_process) and mark it as - recycled if so - - This set of fixes mostly came from Pierre Humblet - to fix pid aliasing and reuse problems on - cygwin - -variables.c - - set $_ from the environment if we get it there, set to $0 by - default if not in env - -doc/{bashref.texi,bash.1} - - a couple of clarifying changes to the description of $_ based on - comments from Glenn Morris - - 2/15 - ---- -shell.c - - use strstr instead of strmatch when checking whether $EMACS contains - `term' -- simpler and faster - - 2/18 - ---- -builtins/cd.def - - implement posix requirement that `pwd -P' set $PWD to a directory - name containing no symlinks - - add new function, setpwd(), just sets (and changes exported value) - of PWD - -doc/bashref.texi - - add note to posix mode section about pwd -P setting $PWD - -doc{bash.1,bashref.texi} - - added note that BASH_ARGC and BASH_ARGV are only set in extended - debug mode - - expand description of extdebug option to include everything changed - by extended debug mode - - 2/19 - ---- -pathexp.h - - new flag macro, FNMATCH_IGNCASE, evaluates to FNM_CASEFOLD if the - match_ignore_case variable is non-zero - -execute_cmd.c - - new variable, match_ignore_case - - change call to strmatch() in execute_case_command so it includes - FNMATCH_IGNCASE - -test.c - - change call to strmatch() in patcomp() so that pattern matching - calls for [[ ... ]] obey the match_ignore_case variable - -lib/sh/shmatch.c - - if match_ignore_case is set, enable REG_ICASE in the regexp match - flags - -builtins/shopt.def - - new settable option, `nocasematch', controls the match_ignore_case - variable. Currently alters pattern matching for case and [[ ... ]] - commands (==, !=, and =~ operators) - -doc/{bashref.texi,bash.1} - - updated descriptions of [[ and case to include reference to - nocasematch option - - 2/22 - ---- -builtins/mkbuiltins.c - - add `times' to the list of posix special builtins - - 2/23 - ---- -builtins/cd.def - - posix mode no longer turns on effect of -P option on $PWD if a - directory is chosen from CDPATH - -doc/bashref.texi - - clarified that in posix mode, reserved words are not alias expanded - only in a reserved word context - - removed item about cd, $CDPATH, and -P from posix mode section - - 2/24 - ---- -builtins/reserved.def - - minor cleanups to the description of `if' - - 3/2 - --- -subst.c - - change list_string and get_word_from_string to explicitly treat an - IFS character that is not space, tab, or newline *and any adjacent - IFS white space* as a single delimiter, as SUSv3/XPG6 says - -builtins/read.def - - check whether or not the number of fields is exactly the same as - the number of variables instead of just assigning the rest of the - line (minus any trailing IFS white space) to the last variable. - This parses a field and checks whether or not it consumes all of - the input (including any trailing field delimiters), falling back - to the previous behavior if it does not. This is what POSIX.2 - specifies, I believe (and the consensus of the austin-group list). - This requires a few tests in read.tests to be changed: backslashes - escaping IFS whitespace characters at the end of input cause the - whitespace characters to be preserved in the value assigned to the - variable, and the trailing non-whitespace field delimiter issue - - 3/7 - --- -configure.in - - add -D_POSIX_SOURCE to the LOCAL_CFLAGS for Interix - - 3/8 - --- -bashline.c - - make bash_directory_expansion a void function, since it doesn't have - any return value - - 3/9 - --- -builtins/read.def - - when testing for a pipe, use `fd' instead of hard-coding 0, since we - can read from other file descriptors now - -lib/sh/zread.c - - in zsyncfd, only set lind and lused to 0 if the lseek succeeds. - If the lseek fails, we might steal input from other programs, but - a failed lseek won't cause us to erroneously discard input - - 3/11 - ---- -builtins/evalstring.c - - don't allow parse_and_execute to short-circuit and call exec() if - the command's return value is being inverted - - 3/15 - ---- -builtins/printf.def - - new macro PC to call putchar and increment number of chars printed - - fixes bug in computation of value for %n format char - - `tw' is now a global var so printstr can modify it using PC() - - convert PF macro to use asprintf into a local buffer - Preparation for printf -v var - - add code to add the text printed to a `variable buffer' if -v option - supplied. The buffer grows as needed - - printf now takes a `-v var' option to put the output into the variable - VAR rather than sending it to stdout. It does not: - print partial output on error (e.g., format string error) - handle NULs in the variable value, as usual - - 3/16 - ---- -parse.y - - fix bug in prompt string decoding that caused a core dump when PS1 - contained \W and PWD was unset (null pointer deref) - -builtins/printf.def - - changed -v var behavior so it stores partial output into the named - variable upon an error - - 3/24 - ---- -lib/readline/bind.c - - bool_to_int now takes a `const char *' argument - -support/{printenv,recho,zecho}.c - - include config.h - - include "bashansi.h" for appropriate extern function declarations - -configure.in - - on MacOS X 10.4, compensate for loader not allowing static library - to override existing system dynamic library when compiling -dynamic - (affects readline and history libraries); so use absolute pathname - instead of -lreadline as library name - -lib/glob/{glob,sm_loop,smatch}.c - - make sure to cast arguments to (char *) or (unsigned char *) as - appropriate to avoid gcc4 warnings - -lib/glob/smatch.c - - collsym (single-byte version) now takes a (CHAR *) first argument to - match callers; cast argument to strncmp appropriately - -lib/sh/snprintf.c - - fix ldfallback and dfallback to handle width and precision specs in - the format passed to sprintf() - - fix STAR_ARGS macro to deal with negative field widths and precisions - - 3/25 - ---- -builtins/printf.def - - since a negative precision in a "x.x[fFgGeE]" format specifier should - be allowed but treated as if the precision were missing, let it - through - -lib/sh/snprintf.c - - fix * code to deal with a negative precision by treating it as if - the `.' and any digit string in the precision had not been specified - - fix format parsing code to deal with a negative inline precision, - e.g., "%4.-4f" by treating it as if the `'. and any digit string in - the precision had not been specified - - a `+' in a format specifier should only act as a flag if it comes - before a `.' (otherwise it is ignored) - -lib/readline/vi_mode.c - - new function, rl_vi_rubout, to rl_rubout as rl_vi_delete is to - rl_delete; saves deleted text for possible reinsertion as with any - vi-mode `text modification' command (fixes problem with `X' reported - by beat.wieland@gmx.ch) - -lib/readline/vi_keymap.c - - bind `X' in vi command mode to rl_vi_rubout - -lib/readline/funmap.c - - add a bindable `vi-rubout' command, runs rl_vi_rubout - -lib/readline/text.c - - rewrote internals of _rl_rubout_char to make structure cleaner - -lib/readline/{complete,text}.c - - changed code to remove #ifdef HANDLE_MULTIBYTE where possible - - 3/28 - ---- -lib/readline/examples/rl.c - - include instead of posixstat.h if READLINE_LIBRARY not - defined - -subst.c - - fix mbstrlen to treat invalid multibyte sequences as sequences of - single-byte characters - - 4/8 - --- -configure.in - - default SIZE to `:' if cross-compiling and an appropriate size for - the target is not found - - 4/11 - ---- -subst.c - - change match_upattern and match_wpattern to check whether or not the - supplied pattern matches anywhere in the supplied string, prefixing - and appending the pattern with `*' if necessary. If it doesn't we - can short-circuit immediately rather than waste time doing up to - N-1 unsuccessful calls to strmatch/wcsmatch (which kills for long - strings, even if the pattern is short) - - 4/12 - ---- -configure.in - - make sure the special case for MacOS X 10.4 only kicks in if the - `--with-installed-readline' option isn't supplied - -lib/readline/{callback,readline,signals}.c - - make sure rl_prep_term_function and rl_deprep_term_function aren't - dereferenced if NULL (as the documentation says) - -builtins/mkbuiltins.c - - don't bother with the special HAVE_BCOPY code; just use straight - assignments - -builtins/ulimit.def - - use _POSIX_PIPE_BUF in pipesize() if it's defined and PIPE_BUF is - not - - 4/13 - ---- -execute_cmd.c - - add cm_function_def to the list of control structures for which - child processes are forked when pipes come in or out - - 4/14 - ---- -builtins/read.def - - make sure the ^As added for internal quoting are not counted as - characters read when -n is supplied - - 4/20 - ---- -redir.c - - fix redir_open so that the repeat open on failure that AFS support - adds restores the correct value of errno for any error message - - 4/26 - ---- - -Makefile.in - - make sure mksignames and mksyntax are invoked with the $(EXEEXT) - extension - - 4/28 - ---- -lib/readline/readline.h - - new state variable: RL_STATE_CALLBACK, means readline is using the - callback interface - -lib/readline/callback.c - - set RL_STATE_CALLBACK in rl_callback_handler_install, unset in - rl_callback_handler_remove - - 4/29 - ---- -config-top.h - - DONT_REPORT_SIGPIPE is now on by default, since it apparently - interferes with scripts - -configure.in - - arrange things so PGRP_PIPE is defined on Linux-2.4+ and version 3 - kernels (ones that apparently schedule children to run before their - parent) - - 4/30 - ---- -builtins/caller.def - - add call to no_options, so it can handle `--' option - -doc/{bash.1,bashref.texi} - - note explicitly that test, :, true, and false don't understand -- - as meaning the end of options - - 5/7 - --- -support/shobj-conf - - darwin 8 needs the same LDFLAGS setting as darwin 7 - -parse.y - - in save_parser_state, make sure we cast the return value from - xmalloc() to the right type - - remove casts to (char *) in calls to yyerror() - -lib/readline/signals.c - - make SIGQUIT and SIGALRM code conditional on their definition - - use raise() to send a signal if we don't have kill() - -lib/readline/display.c - - some MS-DOS and MINGW changes from the cygwin and mingw folks - -config.h.in - - add HAVE_PWD_H for - - add HAVE_FCNTL, HAVE_KILL for respective system calls - - add HAVE_GETPW{ENT,NAM,UID} for passwd functions - -configure.in - - add check for - - add checks for fcntl, kill system calls - - add checks for getpw{ent,nam,uid} C library functions - - pass a flag indicating we're cross compiling through to - CFLAGS_FOR_BUILD in Makefile.in - -lib/readline/complete.c - - guard inclusion of with HAVE_PWD_H - - don't provide a missing declaration for getpwent if we don't have it - - guard calls to {get,end}pwent with HAVE_GETPWENT - -lib/readline/shell.c - - guard inclusion of with HAVE_PWD_H - - guard inclusion of with HAVE_FCNTL_H - - don't provide a missing declaration for getpwuid if we don't have it - - guard calls to getpwuid with HAVE_GETPWUID - - don't bother with body of sh_unset_nodelay_mode if we don't have - fcntl - -lib/tilde/tilde.c - - guard inclusion of with HAVE_PWD_H - - guard calls to getpw{nam,uid} with HAVE_GETPW{NAM,UID} - - guard calls to {get,end}pwent with HAVE_GETPWENT - -Makefile.in,builtins/Makefile.in - - @CROSS_COMPILE@ is substituted into CFLAGS_FOR_BUILD (equal to - -DCROSS_COMPILING if bash is being cross-compiled) - - 5/9 - --- -aclocal.m4 - - print version as `0.0' in RL_LIB_READLINE_VERSION if the - `rl_gnu_readline_p' variable isn't 1 (accept no imitations) - - 5/11 - ---- -lib/readline/rlprivate.h - - definition of a readline `search context', to be use for incremental - search initially and other types of search later. Original from - Bob Rossi as part of work on incremental searching problems when - using callback interface - -lib/readline/isearch.c - - functions to allocate and free search contexts - - function to take a search context and a character just read and - `dispatch' on it: change search parameters, add to search string, - search further, etc. - - isearch is now completely context-driven: a search context is - allocated and passed to the rest of the functions - - 5/12 - ---- -lib/readline/isearch.c - - an additional `isearch cleanup' function that can be called from - the callback interface functions when the search is to be terminated - - an additional `isearch callback' function that can be called from - rl_callback_read_char when input is available - - short-circuit from rl_search_history after initialization if - the callback interface is being used - -lib/readline/callback.c - - in rl_callback_read_char(), if RL_STATE_ISEARCH is set, call - _rl_isearch_callback to read the character and dispatch on it. - If RL_STATE_ISEARCH is unset when that call returns, and there is - input pending, call rl_callback_read_char() again so we don't - have to wait for new input to pick it up - -support/shobj-conf,configure.in - - add support for dragonfly bsd, the same as freebsd - - 5/13-5/15 - --------- -lib/readline/callback.c - - support for readline functions to `register' a function that will - be called when more input is available, with a generic data - structure to encapsulate the arguments and parameters. Primarily - intended for functions that read a single additional character, - like quoted-insert - - support for callback code reading numeric arguments in a loop, - using readline state and an auxiliary variable - - support for callback code performing non-incremental searches using - the same search context struct as the isearch code - -lib/readline/{callback,display}.c - - if a callback function sets `_rl_redisplay_wanted', the redisplay - function will be called as soon as it returns - -lib/readline/input.c - - changes to _rl_read_mbchar to handle reading the null multibyte - character and translating it into '\0' - -lib/readline/misc.c - - break rl_digit_loop() into component functions that can be called - individually from the callback code more easily - - share some of the functions with rl_digit_loop1() in vi_mode.c - -lib/readline/readline.h - - change the version #defines to reflect readline 5.1 - -lib/readline/search.c - - break code into smaller functions that can be composed to work with - the callback code more easily - -lib/readline/text.c - - in rl_quoted_insert(), don't mess around with the tty signals if - running in `callback mode' - -lib/readline/vi_mode.c - - changed set-mark, goto-mark, change-char, and char-search to work - when called by callback functions - - 5/17 - ---- - -lib/readline/rlprivate.h - - new struct declaration for a `reading key sequence' context - -lib/readline/readline.c - - new variable, _rl_dispatching_keymap, keeps track of which keymap - we are currently searching - - functions to allocate and deallocate contexts for reading multi-char - key sequences - - 5/18 - ---- -lib/readline/rlprivate.h - - new struct defining a context for multiple-key key sequences (the - base case is escape-prefixed commands) - -lib/readline/readline.c - - change structure of _rl_dispatch_subseq to allow for callback code - to use it - rudimentary support for supporting the existing - recursion using a stack of contexts, each with a reference to the - previous - - fix so that ^G works when in callback mode - -lib/readline/callback.c - - call the appropriate multiple-key sequence callback if the state is - set - - 5/19 - ---- -lib/readline/readline.c - - broke code from _readline_internal_char after call to rl_dispatch - out into separate function: _rl_internal_char_cleanup, callable by - other parts of the code - - change _rl_internal_char_cleanup to unset _rl_want_redisplay after - it calls (*rl_redisplay_func) - -lib/readline/callback.c - - call _rl_internal_char_cleanup from rl_callback_read_char when - appropriate - - 5/24 - ---- -lib/readline/callback.c - - use _rl_dispatch_callback and a chain of _rl_keyseq_contexts to - simulate the recursion used to decode multicharacter key sequences - (even things like ESC- as meta-prefix) - - call setjmp in rl_callback_read_char to give things like rl_abort - a place to jump, since the saved location in readline() will not - be valid - - keep calling _rl_dispatch_callback from rl_callback_read_char while - we are still decoding a multi-key key sequence - - keep calling readline_internal_char from rl_callback_read_char while - we are reading characters from a macro - -lib/readline/macro.c - - use a slightly different strategy upon encountering the end of a macro - when using the callback interface: when the last character of a - macro is read, and we are reading a command, pop the macro off the - stack immediately so the loop in rl_callback_read_char terminates - when it should - -lib/readline/readline.c - - if longjmp() is called and we end up at the saved location while - using the callback interface, just return -- don't go back into a - blocking read - - new function to dispose a chain of rl_keyseq_cxts - - only read new input in _rl_dispatch_callback if the KSEQ_DISPATCHED - flag is not set in the current keyseq context -- if it is, we are - traversing the chain back up and should use what we already saved - - use -3 as a magic value from _rl_dispatch_subseq to indicate that - we're allocating a new context and moving downward in the chain - (a special return value for the benefit of _rl_dispatch_callback) - -lib/readline/rlprivate.h - - new extern declaration for _rl_keyseq_chain_dispose - - 6/1 - --- -builtins/read.def - - fixed a bug that occurred when reading a set number of chars and - the nth char is a backslash (read one too many). Bug reported by - Chris Morgan - -execute_cmd.c - - fix execute_builtin so the `unset' builtin also operates on the - temporary environment in POSIX mode (as well as source and eval), - so that unsetting variables in the temporary environment doesn't - leave them set when unset completes. Report by Eric Blake - - -array.c - - fix from William Park for array_rshift when shifting right on an - empty array -- corrects calculation of array->max_index - -builtins/exec.def - - if an exec fails and the execfail option is set, don't call - restart_job_control unless the shell is interactive or job_control - is set - -jobs.c - - add a run-time check for WCONTINUED being defined in header files - but rejected with EINVAL by waitpid(). Fix from Maciej Rozycki - - - 6/20 - ---- -bashhist.c - - make sure calls to sv_histchars are protected by #ifdef BANG_HISTORY - - ditto for calls to history_expand_line_internal - - 6/23 - ---- -doc/bashref.texi - - remove extra blank lines in @menu constructs - -variables.c - - assign export_env to environ (extern char **) every time it changes - (mostly in add_to_export_env define), so maybe getenv will work on - systems that don't allow it to be replaced - - 6/29 - ---- -bashline.c - - in bash_directory_completion_hook, be careful about not turning `/' - into `//' and `//' into `///' for benefit of those systems that treat - `//' as some sort of `network root'. Fix from Eric Blake - - -lib/readline/complete.c - - in to_print, do the right thing after stripping the trailing slash - from full_pathname: // doesn't turn into /, and /// doesn't become - //. Fix from Eric Blake - - 6/30 - ---- -lib/malloc/trace.c - - include if it's available for a definition of size_t - -jobs.c - - in wait_for, if a child process is marked as running but waitpid() - returns -1/ECHILD (e.g., when the bash process is being traced by - strace), make sure to increment c_reaped when marking the child as - dead - - in without_job_control, make sure to close the pgrp pipe after - calling start_pipeline - - 7/1 - --- -Makefile.in - - only remove pathnames.h when the other files created by running - configure are removed (e.g., Makefile). Fix from William Park - -lib/sh/shquote.c - - since backslash-newline disappears when within double quotes, don't - add a backslash in front of a newline in sh_double_quote. Problem - reported by William Park - -jobs.c - - in notify_of_job_status, don't print status messages about - terminated background processes unless job control is active - -bashhist.c - - new variable, hist_last_line_pushed, set to 0 in really_add_history - (used by `history -s' code) - -bashhist.h - - new extern declaration for history -s - -builtins/history.def - - don't remove last history entry in push_history if it was added by - a call to push_history -- use hist_last_line_pushed as a sentinel - and set it after adding history entry. This allows multiple - calls to history -s to work right: adding all lines to the history - rather than deleting all but the last. Bug reported by Matthias - Schniedermeyer - - pay attention to hist_last_line_pushed in expand_and_print_history() - so we don't delete an entry pushed by history -s - - 7/4 - --- -print_cmd.c - - fix print_arith_for_command to not print so many blanks between - expressions in ((...)) - -command.h - - new word flag: W_DQUOTE. Means word should be treated as if double - quoted - -make_cmd.c - - add W_DQUOTE to word flags in make_arith_for_expr - -parse.y - - add W_DQUOTE to word flags for (( ... )) arithmetic commands - -subst.c - - don't perform tilde expansion on a word with W_DQUOTE flag set - - don't perform process substitution on a word with W_DQUOTE flag set - -arrayfunc.c - - expand an array index within [...] the same way as an arithmetic - expansion between (( ... )) - -lib/readline/input.c - - use getch() instead of read() on mingw - -lib/readline/readline.c - - add a few key bindings for the arrow keys on mingw - -lib/readline/rldefs.h - - if on mingw, define NO_TTY_DRIVER - -lib/readline/rltty.c - - compile in the stub functions for _rl_{disable,restore}_tty_signals - if on mingw - - compile in stub function for rl_restart_output on mingw - - make sure enough functions and macros are defined to compile if - NO_TTY_DRIVER is defined (lightly tested - builds on MacOS X, at - least) - - 7/7 - --- -command.h - - add a `flags' member to the PATTERN_LIST structure - -make_cmd.c - - intialize the `flags' member of a PATTERN_LIST when it's created - -builtins/psize.c - - protect extern declaration of errno with usual #ifdef errno - -configure.in, variables.c - - changes for QNX 6.x - - 7/9 - --- -parse.y - - fix parse_matched_pair to handle single and double quoted strings - inside old-style command substitution (``) since they can each - quote the ` and embedded $-expansions. Report by Eric Blake - - -{configure,Makefile}.in - - TILDE_LIB is now substituted into Makefile by configure - -configure.in - - if configuring --with-installed-readline on cygwin, set TILDE_LIB - to the empty string to avoid multiply-defined symbols. Cygwin - doesn't allow undefined symbols in dynamic libraries. Report by - Eric Blake - - 7/11 - ---- -input.c - - in duplicate_buffered_stream, don't call free_buffered_stream if the - two buffered streams share the same b_buffer object (e.g., if they - had already been duplicated with a previous call). Fixes Debian bug - reported by eero17@bigfoot.com - - 7/12 - ---- -shell.c - - make set_shell_name more resistant to a NULL argument - - in bind_args, use < instead of != when counting the arguments and - making the arg list - - in main(), make sure arg_index is not initialized to a value greater - than argc - - 7/14 - ---- -lib/readline/display.c - - in expand_prompt, don't set the location of the last invisible - char if the sequence is zero length (\[\]) - - 7/15 - ---- -doc/{bash.1,bashref.texi} - - document that the shell uses $TMPDIR when creating temporary files - - 7/20 - ---- -[bash-3.1-alpha1 frozen] - - 7/29 - ---- -builtins/evalstring.c - - make sure that parse_and_execute saves and restores the value of - loop_level, so loops in sourced scripts and eval'd strings don't - mess up the shell's parser state - -bashline.c - - change command_subst_completion_function to suppress appending - any character to a unique completion, instead of a space, unless - the last word in the quoted command substitution completes to a - directory name. In that case we append the expected slash - - 8/1 - --- -builtins/printf.def - - make sure variables are initialized if their values are tested later - -[bash-3.1-alpha1 updated and re-frozen] - - 8/2 - --- -variables.c - - make sure to call stifle_history with an `int' instead of an intmax_t. - Sometimes it makes a difference - - 8/3 - --- -[bash-3.1-alpha1 released] - -support/mksignames.c - - add `SIGSTKFLT' (RHE3) - - add `SIGXRES' (Solaris 9) - - 8/4 - --- -builtins/ulimit.def - - fix typo to make `x' the right option for locks - - add new options to short help synopsis - -variables.c - - use get_variable_value instead of direct reference to value_cell - in make_variable_value when appending to the current value, so - references to array variables without subscripts will be equivalent - to element 0 - -lib/readline/text.c - - rewrote rl_change_case to correctly change the case of multibyte - characters where appropriate - - 8/5 - --- -configure.in - - remove call to obsolete macro AC_ACVERSION - - remove special calls to AC_CYGWIN and AC_MINGW32; AC_CANONICAL_HOST - takes care of those cases - -general.h - - include `chartypes.h' for definition of ISALPHA - - fix definitions of ABSPATH and RELPATH for cygwin - - fix definition of ISDIRSEP for cygwin to allow backslash as a - directory name separator - - 8/9 - --- -builtins/setattr.def - - when setting a variable from the temporary environment in - set_var_attribute (e.g., `LC_ALL=C export LC_ALL'), make sure to - call stupidly_hack_special_variables after binding the variable in - the current context - -builtins/printf.def - - make sure to call stupidly_hack_special_variables if using `printf -v' - to put formatted output in a shell variable - - 8/11 - ---- -support/shobj-conf - - new variable: SHLIB_LIBPREF, prefix for shared library name (defaults - to `lib' - - new variable: SHLIB_DLLVERSION, used on Cygwin to set the library - version number - - new variable: SHLIB_DOT, separator character between library name and - suffix and version information (defaults to `.') - - new stanza for cygwin to generate windows-compatible dll - - 8/14 - ---- -variables.c - - new special variable function for Cygwin, so the export environment - is remade when HOME is changed. The environment is the only way to - get information from the shell to cygwin dlls, for instanace, when - bash is compiled to use an already-installed libreadline - -variables.h - - new extern declaration for sv_home - - 8/15 - ---- -lib/readline/display.c - - call init_line_structures from rl_redisplay if vis_lbreaks == 0 - to avoid consequences of a poorly-timed SIGWINCH - - 8/16 - ---- -subst.c - - fix logic for performing tilde expansion when in posix mode (don't - rely on W_TILDEEXP flag always being set, because it won't be when - expanding the RHS of assignment statement). Use W_TILDEEXP only - when deciding to expand a word marked as W_ASSIGNMENT that doesn't - precede a command name - - 8/17 - ---- -execute_cmd.c - - in execute_function, when subshell == 1, don't short-cut by using - the command contained in the group command -- if you do, any - redirections attached to the group command (function) don't get - executed - -general.h - - new #define, FS_READABLE, indicates file is readable by current - user - -findcmd.c - - rewrote file_status to use S_xxx POSIX file mode bits and to add - support for FS_READABLE (affects ./source and searching $PATH for - scripts whose names are supplied as arguments on the command line) - - change find_path_file to look for readable files -- source requires - it - - change find_in_path_element to do the right thing when FS_READABLE - is supplied as a flag - -doc/bashref.texi - - remove note about posix non-compliance in `.': we now require and - look for readable files when searching $PATH - - 8/20 - ---- -subst.c - - fix setifs to handle case where passed variable is non-zero but - v->value == 0 (as in an unset local variable); treat IFS as unset - in this case - -jobs.c - - in kill_pid, if asked to killpg a process or pgrp whose pgrp is - recorded as the same as the shell's, just call killpg and let the - chips fall where they may -- there may be other processes in that - pgrp that are not children of the shell, so killing each process - in the pipeline will not do a complete job, and killpg'ing each - such process will send too many signals in the majority of cases - -builtins/cd.def - - in posix mode, pwd needs to check that the value it prints and `.' - are the same file - -builtins/read.def - - if reading input from stdin in a non-interactive shell and calling - `read', call sync_buffered_stream to seek backward in the input - stream if necessary (XXX - should we do this for all shell builtins?) - - 8/23 - ---- -builtins/cd.def - - in posix mode, if canonicalization of the absolute pathname fails - because the path length exceeds PATH_MAX, but the length of the passed - (non-absolute) pathname does not, attempt the chdir, just as when - not in posix mode - -builtins/type.def - - don't have describe_command call sh_makepath if the full path found - is already an absolute pathname (sh_makepath will stick $PWD onto the - front of it) - - 8/24 - ---- - -jobs.c - - in posix mode, don't have start_job print out and indication of - whether the job started by `bg' is the current or previous job - - change start_job to return success if a job to be resumed in the - background is already running. This means that bg won't fail when - asked to bg a background job, as SUSv3/XPG6 requires - - new function, init_job_stats, to zero out the global jobstats struct - -{jobs,nojobs}.c - - change kill_pid to handle pids < -1 by killing process groups - -jobs.h - - extern declaration for init_job_stats - -lib/readline/history.c - - check whether or not the history list is null in remove_history - -builtins/history.def - - delete_last_history is no longer static so fc builtin can use it - -builtins/fc.def - - use free_history_entry in fc_replhist instead of freeing struct - members individually - - call delete_last_history from fc_replhist instead of using inline - code - - if editing (-l not specified), make sure the fc command that caused - the editing is removed from the history list, as POSIX specifies - -builtins/kill.def - - just call kill_pid with any pid argument and let it handle pids < -1 - This is the only way to let kill_pid know whether a negative pid or - a job spec was supplied as an argument to kill - -builtins/fg_bg.def - - force fg_bg to return EXECUTION_SUCCESS explicitly if called by bg - and start_job returns successfully - - bg now returns success only if all the specified jobs were resumed - successfully - -execute_cmd.c - - call init_job_stats from initialize_subshell to zero out the global - job stats structure - - 8/25 - ---- -bashline.c - - change vi_edit_and_execute_command to just call vi when in posix - mode, instead of checking $FCEDIT and $EDITOR - -lib/readline/search.c - - if in vi_mode, call rl_free_undo_list in make_history_line_current - to dispose of undo list accumulated while reading the search string - (if this isn't done, since vi mode leaves the current history - position at the entry which matched the search, the call to - rl_revert_line in rl_internal_teardown will mangle the matched - history entry using a bogus rl_undo_list) - - call rl_free_undo_list after reading a non-incremental search string - into rl_line_buffer -- that undo list should be discarded - -lib/readline/rlprivate.h - - add UNDO_LIST * member to search context struct - -lib/readline/isearch.c - - initialize UNDO_LIST *save_undo_list member of search context struct - - 8/27 - ---- -lib/readline/bind.c - - change rl_parse_and_bind to strip whitespace from the end of a - variable value assignment before calling rl_variable_bind - -doc/bash.1,lib/readline/doc/{rluser.texi,readline.3} - - clarified the language concerning parsing values for boolean - variables in assignment statements - - 8/28 - ---- -lib/sh/pathphys.c - - fix small memory leak in sh_realpath reported by Eric Blake - - 8/31 - ---- -doc/bashref.texi - - add additional notes to posix mode section - - 9/3 - --- -parse.y - - if $'...' occurs within a ${...} parameter expansion within - double quotes, don't single-quote the expanded result -- the double - quotes will cause it to be expanded incorrectly - - 9/4 - --- -builtins/fc.def - - if STRICT_POSIX is defined, the posix mode default for the editor to - use is $FCEDIT, then ed - -shell.c - - if STRICT_POSIX is defined, initialize `posixly_correct' to 1 - -config.h.in - - add #undef STRICT_POSIX - - 9/5 - --- -configure.in - - add new option argument, --enable-strict-posix-default, configures - bash to be posix-conformant (including defaulting echo to posix - conformance) by default - -builtins/echo.def - - if STRICT_POSIX is defined, default echo to xpg-style - -doc/bashref.texi - - describe the --enable-strict-posix-default option to configure - - 9/10 - ---- -builtins/mkbuiltins.c - - change to not generate N_(""), because the translated empty string is - special to GNU gettext - - 9/13 - ---- -lib/readline/complete.c - - a negative value for rl_completion_query_items means to not ask - -lib/readline/doc/{{rltech,rluser}.texi,readline.3} - - documented new semantics for rl_completion_query_items/ - completion-query-items - - 9/14 - ---- -bashline.c - - bind M-TAB in emacs mode to dynamic-complete-history even if the - current binding is `tab-insert' (which is what it is by default), - not just if it's unbound - - 9/15 - ---- -eval.c - - call QUIT before calling dispose_command on current_command after - the `exec_done' label. If we dispose current_command first, the - longjmp might restore the value of current_command after we've - disposed it, and the subsequent call to dispose_command from the - DISCARD case will free memory twice - - 9/16 - ---- -lib/sh/strto[iu]max.c - - make sure the function being declared is not a cpp define before - defining it -- should fix problems on HP-UX - - 9/19 - ---- -Makefile.in - - make sure the binaries for the tests are at the front of $PATH - - 9/22 - ---- -parse.y - - new flag for parse_matched_pair: P_COMMAND, indicating that the - text being parsed is a command (`...`, $(...)) - - change calls to parse_matched_pair to include P_COMMAND where - appropriate - - if P_COMMAND flag is set and the text is unquoted, check for comments - and don't try to parse embedded quoted strings if in a comment (still - not exactly right yet) - - 9/24 - ---- -builtins/history.def - - if running history -n, don't count these new lines as history lines - for the current session if the `histappend' shell option is set. - If we're just appending to the history file, the issue that caused - history_lines_this_session to be recalculated doesn't apply -- the - history file won't be missing any entries - -lib/readline/isearch.c - - fix C-w handler for isearch string reader to handle multibyte chars - -lib/readline/rlmbutil.h - - new defines for _rl_to_wupper and _rl_to_wlower - -lib/readline/text.c - - use _rl_to_wupper and _rl_to_wlower as appropriate - - 9/26 - ---- -execute_cmd.c - - in shell_execve, if the exec fails due to E2BIG or ENOMEM, just print - the appropriate error message instead of checking out any interpreter - specified with #! - - 9/30 - ---- -bashhist.c - - make $HISTCMD available anytime remember_on_history is non-zero, - which indicates that we're saving commands to the history, and - let it evaluate to 1 if we're not - - 10/4 - ---- -lib/sh/snprintf.c - - in floating(), make sure d != 0 before calling chkinfnan -- gcc on the - version of Solaris 9 I have translates 0 to -inf on the call - -[bash-3.1-beta1 frozen] - - 10/6 - ---- -jobs.c - - set the_pipeline to NULL right away in cleanup_the_pipeline, and - dispose a copy of the pointer so we don't mess with the_pipeline - while we're in the process of destroying it - - block and unblock SIGCHLD around manipulating the_pipeline in - cleanup_the_pipeline - - 10/7 - ---- -[bash-3.1-beta1 released] - -lib/readline/isearch.c - - when switching directions, make sure we turn off the SF_REVERSE - flag in the search context's flags word if we're going from reverse - to forward i-search - -lib/readline/bind.c - - new function, rl_variable_value, returns a string representing a - bindable readline variable's value - - new auxiliary function, _rl_get_string_variable_value, encapsulates - everything needed to get a bindable string variable's value - - rewrote rl_variable_dumper to use _rl_get_string_variable_value - -lib/readline/readline.h - - new extern declaration for rl_variable_value - -lib/readline/doc/rltech.texi - - documented rl_variable_value - -bashline.c - - in command_word_completion_function, if readline sets - rl_completion_found_quote, but doesn't set rl_completion_quote_character, - we have an embedded quoted string or backslash-escaped character in - the passed text. We need to dequote that before calling - filename_completion_function. So far, this is in place only for - absolute program names (those containing a `/') - - in command_word_completion_function, use rl_variable_value to decide - whether or not we should ignore case, and use strncasecmp instead of - strncmp where appropriate - - 10/11 - ----- -builtins/fc.def - - fixed a typo when using POSIX_FC_EDIT_COMMAND - -redir.h - - new flag values for redirections: RX_INTERNAL and RX_USER (currently - unused) - -redir.c - - add_undo_redirect and add_undo_close_redirect now set RX_INTERNAL - flag when making new redirects - - in do_redirection_internal, only set file descriptors > 2 to CLEXEC - if they're marked as RX_INTERNAL - - 10/12 - ----- -jobs.c - - in wait_for_single_pid, if in posix mode, remove the waited-for pid - from the list of background pids, forgetting it entirely. POSIX - conformance tests test for this. - -lib/readline/{readline.h,vi_mode.c} - - new state flag, RL_STATE_VICMDONCE, set after entering vi command - mode the first time; reset on each call to readline() - - 10/13 - ----- -lib/readline/undo.c - - in rl_revert_line, make sure that revert-line in vi mode leaves - rl_point set to 0 no matter the state of the line buffer - -lib/readline/vi_mode.c - - when entering vi_command mode for the first time, free any existing - undo list so the previous insertions won't be undone by the `U' - command. This is how POSIX.2 says `U' should work (and the test - suite tests for it) - -lib/readline/bind.c - - change rl_parse_and_bind so only `set' commands involving boolean - readline variables have trailing whitespace stripped from the value - string - - 10/16 - ----- -lib/glob/sm_loop.c - - fix patscan() to correctly scan backslash-escaped characters - - 10/18 - ----- -lib/sh/{winsize.c,Makefile.in},{jobs,nojobs}.c,Makefile.in,externs.h - - moved get_new_window_size from jobs.c/nojobs.c to new file, - lib/sh/winsize.c, made function global - -{jobs,nojobs,sig}.c,{jobs,sig}.h - - moved SIGWINCH handling code to sig.c rather than duplicate it in - jobs.c and nojobs.c - - call set_sigwinch_handler from sig.c code rather than job control - signal initialization - -sig.[ch] - - new variable, sigwinch_received, acts like interrupt_state for - SIGWINCH, set by sigwinch_sighandler. sigwinch_sighandler no longer - calls get_new_window_size - -parse.y - - add call to get_new_window_size if sigwinch_received at top of - shell_getc - - 10/19 - ----- -lib/malloc/malloc.c - - to avoid orphaning memory on free if the right bucket is busy, use a - new function xplit(mem, bucket) to split the block into two or more - smaller ones and add those to the right bucket (appropriately marking - it as busy) - - audit bsplit(), bcoalesce(), and xsplit() for proper use of busy[], - since they're dealing with two separate buckets - - 10/22 - ----- -subst.c - - new flag for string_extract: EX_REQMATCH, means to return an error - if a matching/closing character is not found before EOS - - new static flag variables: extract_string_error and extract_string_fatal - - change expand_word_internal to check for new error returns from - string_extract and return errors if appropriate - - 10/23 - ----- -builtins/cd.def - - make sure we free TDIR in change_to_directory after calling - set_working_directory (which allocates new memory) and other places - we short-circuit and return - - 10/24 - ----- -subst.c - - modified fix from 10/22 to allow bare ` to pass through (for - some backwards compatibility and more correctness) - - 10/27 - ----- -conftypes.h - - make MacOS X use the RHAPSODY code that gets HOSTTYPE, et al. - at build rather than configure time, to support universal binaries - (fix from llattanzi@apple.com) - - 10/30 - ----- -builtins/evalstring.c - - make sure we don't turn on CMD_NO_FORK in parse_and_execute if - we're running a trap command on signal receipt or exit - -execute_cmd.c - - in shell_execve, improve the error message a little bit if the - interpreter name in a #! exec header ends with a ^M (as in a DOS- - format file) - - 11/1 - ---- -lib/readline/vi_mode.c - - fix vi-mode `r' command to leave the cursor in the right place - -[bash-3.1-rc1 frozen] - - 11/5 - ---- -execute_cmd.c - - make sure a DEBUG trap doesn't overwrite a command string passed to - make_child in execute_simple_command - -bashline.c - - rearrange some code in bash_quote_filename so filenames with leading - tildes containing spaces aren't tilde-expanded before being - returned to the caller - - 11/6 - ---- -lib/readline/display.c - - when deciding where to move the cursor in rl_redisplay and needing - to move the cursor back after moving it vertically and compensate - for invisible characters in the prompt string, make sure that - _rl_last_c_pos is treated as an absolute cursor position in a - multibyte locale and the wrap offset (number of invisible characters) - is added explicitly when deciding how many characters to backspace - - 11/10 - ----- -lib/readline/terminal.c - - _rl_set_screen_size now interprets a lines or columns argument < 0 - as an indication not to change the current value - - 11/11 - ----- - -lib/readline/terminal.c - - new function, rl_reset_screen_size, calls _rl_get_screen_size to - reset readline's idea of the terminal size - - don't call _rl_get_screen_size in _rl_init_terminal_io if both - _rl_screenheight and _rl_screenwidth are > 0 - - don't initialize _rl_screenheight and _rl_screenwidth to 0 in - _rl_init_terminal_io; let caller take care of it - - set _rl_screenheight and _rl_screenwidth to 0 before calling - _rl_init_terminal_io - -lib/readline/readline.h - - new extern declaration for rl_reset_screen_size - -lib/readline/doc/rltech.texi - - documented rl_reset_screen_size - -variables.c - - if readline is being used, compile in a special var function for - assignments to LINES and COLUMNS that calls rl_set_screen_size or - rl_reset_screen_size as appropriate. Only do this in posix mode - and only when STRICT_POSIX is defined at compile time - - new semaphore variable, winsize_assignment, set while doing an - assignment to LINES or COLUMNS - - new variable, winsize_assigned, says LINES or COLUMNS was assigned - to or found in the environment - - if in the middle of an assignment to LINES or COLUMNS, make - sh_set_lines_and_columns a no-op - -lib/sh/winsize.c - - get_new_window_size now takes two int * arguments, to return the - screen dimensions - -externs.h - - change extern declaration for get_new_window_size - -{jobs,nojobs}.c, parse.y - - change callers of get_new_window_size - - 11/12 - ----- -lib/readline/terminal.c - - new variable, rl_prefer_env_winsize, gives LINES and COLUMNS - precedence over values from the kernel when computing window size - -lib/readline/readline.h - - extern declaration for rl_prefer_env_winsize - -lib/readline/doc/rltech.texi - - document rl_prefer_env_winsize - - 11/13 - ----- -lib/readline/rltty.c - - change rl_prep_terminal to make sure we set and reset the tty - special characters in the vi insertion keymap if in vi mode. This - matters if we get accept-line for the previous line while in vi - command mode - - 11/14 - ----- -builtins/pushd.def - - make sure any call to cd_builtin includes a leading `--' from the - argument list (or constructs one) - - 11/16 - ----- -pcomplete.c - - fix small memory leak in gen_wordlist_matches - -[bash-3.1-rc2 frozen] - - 11/21 - ----- -[bash-3.1-rc2 released] - - 11/23 - ----- -lib/readline/display.c - - changes to rl_redisplay to compensate for update_line updating - _rl_last_c_pos without taking invisible characters in the line into - account. Important in multibyte locales where _rl_last_c_pos is an - absolute cursor position - - changes to _rl_move_cursor_relative to account for _rl_last_c_pos - being an absolute cursor position in a multibyte character locale - - rewrote _rl_move_cursor_relative to make it a little simpler - - 11/29 - ----- -lib/readline/display.c - - changes to rl_redisplay and update_line for update_line to communicate - upward that it took the number of invisible characters on the current - line into account when modifying _rl_last_c_pos - - in update_line, adjust _rl_last_c_pos by wrap_offset before calling - _rl_move_cursor_relative, so we pass correct information about the - true cursor position - - 12/1 - ---- -configure.in - - changed release status to `release' - -[bash-3.1 frozen] - - 12/8 - ---- -[bash-3.1 released] - - 12/9 - ---- -doc/{bash.1,version.texi},lib/readline/doc/version.texi - - remove `beta1' from man page footer and texinfo documents - -variables.c - - make sure winsize_assignment is protected by #ifdef READLINE, so - minimal shell will compile - -builtins/read.def - - make sure error cases free memory and run any unwind-protects to - avoid memory leaks - - 12/10 - ----- -execute_cmd.c - - change execute_command_internal to set $PIPESTATUS for ((...)) and - [[ ... ]] commands - -doc/{bash.1,bashref.texi,version.texi} - - add documentation for ulimit -[iqx] and bump revision date - - 12/12 - ----- -parse.y - - make sure parse_compound_assignment saves and restores the - PST_ASSIGNOK parser state flag around its calls to read_token. - Fixes bug reported by Mike Frysinger - - 12/13 - ----- -parse.y - - change parse_compound_assignment to save and restore the value of - last_read_token. Not sure why it was set unconditionally in the - first place after parsing the complete compound assignment - - 12/14 - ----- -lib/readline/text.c - - don't use return value of rl_kill_text (which always succeeds and - returns the number of characters killed) in rl_delete as an indication - of success or failure - - ditto for return value of rl_delete_text - -lib/readline/readline.c - - don't return the value of the called readline function as the return - value from _rl_dispatch_subseq; -1 means something different to the - callers (return 0 all the time to indicate that a readline function - was found and dispatched). Fix from Andreas Schwab for - bug in callback interface first reported by Mike Frysinger - -execute_cmd.c - - fixed a typo in execute_case_command - - 12/15 - ----- -aclocal.m4 - - add check for wctype() to BASH_CHECK_MULTIBYTE, define HAVE_WCTYPE - -config.h.in - - add HAVE_WCTYPE #define - -config-bot.h - - add HAVE_WCTYPE to the set of checks for HANDLE_MULTIBYTE. This - should catch the deficient NetBSD multibyte support - - 12/16 - ----- -parse.y - - use CTLESC instead of literal '\001' when decode_prompt_string - prefixes RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE - - 12/20 - ----- -lib/readline/display.c - - don't treat RL_PROMPT_START_IGNORE specially inside a sequence of - ignored characters - - keep track of the start of the current sequence of ignored - characters; make sure that an empty sequence of such characters - really is an empty sequence, not one that happens to end with '\001' - (RL_PROMPT_START_IGNORE) - - 12/21 - ----- -subst.c - - change expand_word_internal to process rest of `tilde-word' as a - regular part of the word if tilde expansion leaves the tilde-word - unchanged. This means that ~$USER expands to ~chet, which seems - more intuitive, and is effectively what bash-3.0 did - - 12/23 - ----- -subst.c - - when making a local array variable in do_compound_assignment, make - sure that we don't use a variable of the same name from a previous - context - -doc/bash.1 - - documented expansions for word and patterns in case statement - -builtins/ulimit.def,doc/{bashref.texi,bash.1} - - added new -e and -r (nice and rtprio) options to ulimit; documented - them - - 12/26 - ----- -variables.c - - use `hmax' instead of `num' in sv_histsize to avoid integer overflow - problems with intmax_t - -builtins/read.def - - add unwind-protect to restore rl_attempted_completion_function in - case of a timeout - -{bashline,variables}.c - - move initialization of HISTSIZE from initialization path to - load_history, so it can be overridden by a value assigned in a - startup file - -lib/readline/misc.c - - add a missing `return r' so that rl_digit_loop returns a meaningful - value - -lib/readline/{bind,callback,display,isearch,rltty,search,text,vi_mode}.c - - minor cleanups to satisfy compiler warnings, mostly removing unused - variables - - 12/27 - ----- -support/Makefile.in - - add LIBS_FOR_BUILD support; defaults to ${LIBS} - -Makefile.in - - add LIBS_FOR_BUILD with no default value; use when linking programs - using CC_FOR_BUILD (e.g., bashversion) - - 12/28 - ----- -lib/readline/bind.c - - fix rl_translate_keyseq bad translation of \M-\C-x sequences - -execute_cmd.c - - in execute_arith_command, if the expression expands to more than one - word, make sure we join the words into a single string and pass the - entire thing to evalexp() - -expr.c - - new functions: _is_arithop(c), returns true if C is a valid single- - character arithmetic operator; _is_multiop(c), returns true if C is - a token corresponding to a valid multi-character arithmetic operator - - if we encounter a character that isn't a valid arithmetic - operator, throw an error. Try to be intelligent about what type of - error message to print - -subst.c - - new function, expand_arith_string, calls expand_string_if_necessary; - used where an arithmetic expression needs to be expanded - -subst.h - - new extern declaration for expand_arith_string - -arrayfunc.c - - in array_expand_index, call expand_arith_string to expand the - subscript in a fashion consistent with other arithmetic expressions - -subst.c - - fix parameter_brace_patsub so that we don't try to anchor the pattern - at the beginning or end of the string if we're doing global - replacement -- that combination doesn't doesn't make sense, and - the changed behavior is compatible with ksh93 - -doc/{bash.1,bashref.texi} - - changed description of pattern substitution to match the new - semantics - -tests/new-exp.tests - - change tests to remove all ${pat//#rep} and ${pat//%rep} - expansions, since they don't mean the same thing anymore - - 12/29 - ----- -support/signames.c - - new file, initialize_signames() function from old mksignames.c. This - file builds the signal_names array - -support/mksignames.c - - strip out initialize_signames(), move to signames.c. This file only - writes signames.h - - set up to only write a stub signames.h if CROSS_COMPILING is defined, - with extern declaration for initialize_signames - - if not cross compiling, #define initialize_signames to nothing - -Makefile.in - - mksignames is now linked from mksignames.o and buildsignames.o - - add rules to build signames.o, assuming we're building it as part - of the shell (cross-compiling) - -trap.c - - call initialize_signames from initialize_traps - -configure.in - - set SIGNAMES_O to nothing (normal) or signames.o (cross-compiling), - substitute into Makefile - - don't set SIGNAMES_H if cross-compiling any more - - 12/30 - ----- -command.h - - new word flag: W_NOPROCSUB, inhibits process substitution on a word - -subst.c - - change expand_word_internal to suppress process substitution if the - word has the W_NOPROCSUB flag - -shell.c - - --wordexp turns on W_NOPROCSUB in addition to W_NOCOMSUB - -subst.c - - change string_list_dollar_at and string_list_dollar_star so that - MB_CUR_MAX is used to size an array only when using gcc, since gcc - can handle non-constant array sizes using a mechanism like alloca. - Other compilers, e.g. Sun's compiler, do not implement that - extension - - 12/31 - ----- -builtins/mkbuiltins.c - - when cross-compiling, don't include , since it's for the - target rather than the host system. Instead, choose a reasonable - set of default #defines based on a minimal POSIX system - -jobs.c - - change find_process to handle a NULL return value from find_pipeline - - return immediately from delete_job if jobs[index] is already NULL or - if it has a null pipeline associated with it - - in delete_job, if find_last_proc returns NULL, don't try to call - bgp_delete - - 1/7/2006 - -------- -doc/bash.1 - - patch from Tim Waugh to replace some literal single quotes with - \(aq, the groff special character for it - -jobs.c - - in realloc_jobs_list, make sure to zero out slots after j_lastj - in the new list - - 1/9 - --- -support/mksignames.c - - make sure to include to get right value of NSIG from - (usually) - - 1/10 - ---- -parse.y - - when calling parse_matched_pair on a $(...) command substitution, - don't pass the P_DQUOTE flag so that single quotes don't get - stripped from $'...' inside the command substitution. Bug report - and fix from Mike Stroyan - -jobs.c - - start maintaining true count of living children in js.c_living - - call reset_current in realloc_jobs_list, since old values for current - and previous job are most likely incorrect - - don't allocate a new list in realloc_jobs_list if the old size and - new size are the same; just compact the existing list - - make sure realloc_jobs_list updates value of js.j_njobs - - add some more itrace messages about non-null jobs after j_lastj in - jobs array - - 1/11 - ---- -bashjmp.h - - new value for second argument to longjmp: SIGEXIT. Reserved for - future use - - 1/12 - ---- -jobs.c - - add logic to make_child to figure out when pids wrap around - - turn second argument to delete_job into flags word, added flag to - prevent adding proc to bgpids list - - 1/13 - ---- -lib/readline/vi_mode.c - - move code that moves forward a character out of rl_vi_append_mode - into a separate function, _rl_vi_append_forward - - change _rl_vi_append_mode to save `a' as the last command, so it - can be redone properly - - new function _rl_vi_backup, moves point back a character taking - multibyte locales into account - - change rl_vi_redo to handle redoing an `a' command specially -- - it should be redone like `i' but after moving forward a character - - change rl_vi_redo to use _rl_vi_backup to move point backward - after redoing `i' or `a' - -jobs.c - - new function, delete_old_job (pid), checks whether or not PID is in - a job in the jobs list. If so, and the job is dead, it just removes - the job from the list. If so, and the job is not dead, it zeros - the pid in the appropriate PROCESS so pid aliasing doesn't occur - - make_child calls delete_old_job to potentially remove an already-used - instance of the pid just forked from the jobs list if pids have - wrapped around. Finally fixes the bug reported by Tim Waugh - - -trap.c - - new define, GETORIGSIG(sig), gets the original handling for SIG and - sets SIG_HARD_IGNORE if that handler is SIG_IGN - - call GETORIGSIG from initialize_traps, get_original_signal, and - set_signal - -jobs.c - - in wait_for, if the original SIGINT handler is SIG_IGN, don't set - the handler to wait_sigint_handler. This keeps scripts started in - the background (and ignoring SIGINT) from dying due to SIGINT while - they're waiting for a child to exit. Bug reported by Ingemar - Nilsson - -lib/readline/vi_mode.c - - don't save text to buffer unless undo pointer points to a record of - type UNDO_INSERT; zero it out instead. This fixes bug reported by - Craig Turner with redoing `ctd[ESC]' (empty - insert after change to) - -shell.c - - change set_shell_name so invocations like "-/bin/bash" are marked as - login shells - -doc/bash.1 - - add note about destroying functions with `unset -f' to the section - on shell functions - -lib/readline/terminal.c - - if readline hasn't been initialized (_rl_term_autowrap == -1, the - value it's now initialized with), call _rl_init_terminal_io from - _rl_set_screen_size before deciding whether or not to decrement - _rl_screenwidth. Fixes bug from Mike Frysinger - - 1/14 - ---- -lib/readline/input.c - - allow rl_set_keyboard_input_timeout to set the timeout to 0, for - applications that want to use select() like a poll without any - waiting - -lib/readline/doc/rltech.texi - - documented valid values for timeout in rl_set_keyboard_input_timeout - -jobs.c - - in stop_pipeline, don't have the parent shell call give_terminal_to - if subshell_environment contains SUBSHELL_ASYNC (no background - process should ever give the terminal to anything other than - shell_pgrp) - - in make_child, don't give the terminal away if subshell_environment - contains SUBSHELL_ASYNC - - 1/15 - ---- -subst.c - - in parameter_brace_expand, if extracting ${#varname}, only allow - `}' to end the expansion, since none of the other expansions are - valid. Fixes Debian bug reported by Jan Nordhorlz - - 1/17 - ---- -parse.y - - in parse_matched_pair, protect all character tests with the MBTEST - macro - - in parse_dparen, take out extra make_word after call to alloc_word_desc - (mem leak) - - 1/18 - ---- -parse.y - - in parse_matched_pair, add P_ALLOWESC to flags passed to recursive - parse_matched_pair call when encountering a single or double quote - inside a ``-style command substitution - -execute_cmd.c - - add call to QUIT at beginning of execute_command_internal; better - responsiveness to SIGINT - - 1/21 - ---- -lib/readline/bind.c - - change rl_invoking_keyseqs_in_map to honor the setting of - convert-meta when listing key bindings, since if convert-meta is off, - using '\M-' as the prefix for bindings in, for instance, - emacs-escape-keymap, is wrong. This affects `bind -p' output - - change rl_untranslate_keyseq to add '\e' instead of '\C-[' for - ESC - -execute_cmd.c - - add call to QUIT at end of execute_command - - 1/23 - ---- -lib/readline/display.c - - changed two places in update_line where a check of whether the cursor - is before the last invisible character in the prompt string to - differentiate between the multibyte character case (where - _rl_last_c_pos is a physical cursor position) and the single-byte - case (where it is a buffer index). This prevents many unnecessary - \r-redraw the line sequences. Reported by Dan Jacobson. - - 1/24 - ---- -quit.h - - wrap QUIT macro in do...while(0) like other compound statement - macros - - CHECK_TERMSIG define (placeholder for now); future use will be to - handle any received signals that should cause the shell to - terminate (e.g., SIGHUP) - -{input,jobs,nojobs}.c - - add calls to CHECK_TERMSIG where appropriate (reading input and - waiting for children) - - include quit.h if necessary - - 1/25 - ---- -parse.y - - undo change that makes `)' in a compound assignment delimit a token. - It messes up arithmetic expressions in assignments to `let', among - other things - -sig.h,{jobs,nojobs,sig,trap}.c,builtins/trap.def - - rename termination_unwind_protect to termsig_sighandler - -sig.c - - split termsig_sighandler into two functions: termsig_sighandler, which - runs as a signal handler and sets a flag noting that a terminating - signal was received, and termsig_handler, which runs when it is `safe' - to handle the signal and exit - - new terminate_immediately variable, similar to interrupt_immediately - - termsig_sighandler calls termsig_handler immediately if - terminate_immediately is non-zero - -quit.h - - change CHECK_TERMSIG macro to check terminating_signal and call - termsig_handler if it's non-zero - - add same check of terminating_signal and call to termsig_handler to - QUIT macro - -{jobs,nojobs}.c - - change call to termsig_sighandler to call termsig_handler directly, - as was intended - -parse.y,builtins/read.def - - set terminate_immediately to non-zero value when reading interactive - input, as is done with interrupt_immediately - - 1/26 - ---- -doc/{bash.1,bashref.texi} - - reworded the POSIX standard references to remove mention of POSIX.2 - or 1003.2 -- it's all the 1003.1 standard now. Recommended by - Arnold Robbins - - 1/27 - ---- -lib/readline/complete.c - - move call to filename dequoting function into - rl_filename_completion_function; call only if directory completion - hook isn't set. This means that directory-completion-hook now needs - to dequote the directory name. We don't want to dequote the directory - name before calling the directory-completion-hook. Bug reported by - Andrew Parker - -bashline.c - - add necessary directory name dequoting to bash_directory_expansion - and bash_directory_completion_hook - -lib/readline/doc/rltech.texi - - add note to description of rl_directory_completion_hook that it - needs to dequote the directory name even if no other expansions are - performed - - 1/28 - ---- -braces.c - - make sure that we skip over braces that don't start a valid matched - brace expansion construct in brace_expand -- there might be a valid - brace expansion after the unmatched `{' later in the string - - brace_gobbler now checks that when looking for a `}' to end a brace - expansion word, there is an unquoted `,' or `..' that's not inside - another pair of braces. Fixes the a{b{c,d}e}f problem reported by - Tim Waugh - -builtins/declare.def - - when not in posix mode, and operating on shell functions, typeset - and declare do not require their variable operands to be valid - shell identifiers. The other `attribute' builtins work this way. - Fixes inconsistency reported by Mike Frysinger - -{configure,config.h}.in - - add test for setregid, define HAVE_SETREGID and HAVE_DECL_SETREGID - as appropriate - - add test for eaccess, define HAVE_EACCESS if found - -lib/sh/eaccess.c - - new file, with sh_stat and sh_eaccess functions, moved from test.c - - renamed old sh_eaccess as sh_stataccess, since it uses the stat(2) - information to determine file accessibility - - new function, sh_euidaccess, to call when uid != euid or gid != egid; - temporarily swaps uid/euid and gid/egid around call to access - - rewrote sh_eaccess to call eaccess, access, sh_euidaccess or - sh_stataccess as appropriate. access(2) will take into account - things like ACLs, read-only file systems, file flags, and so on. - -lib/sh/Makefile.in,Makefile.in - - add necessary entries for eaccess.[co] - -test.c - - change calls to test_stat to call sh_stat - -{test,general}.c - - change calls to test_eaccess to call sh_eaccess - -externs.h - - new extern declaration for sh_eaccess - -test.[ch] - - remove test_stat and test_eaccess - - 1/29 - ---- -braces.c - - make change from 1/28 dependant on CSH_BRACE_COMPAT not being - defined (since old bash behavior is what csh does, defining - CSH_BRACE_COMPAT will produce old bash behavior) - - 1/30 - ---- -bashline.c - - last argument of bash_default_completion is now a flags word: - DEFCOMP_CMDPOS (in command position) is only current value - - attempt_shell_completion now computes flags before calling - bash_default_completion - - if no_empty_command_completion is set, bash does not attempt command - word completion even if not at the beginning of the line, as long - as the word to be completed is empty and start == end (catches - beginning of line and all whitespace preceding point) - - 2/4 - --- -lib/readline/display.c - - change _rl_make_prompt_for_search to use rl_prompt and append the - search character to it, so the call to expand_prompt in rl_message - will process the non-printing characters correctly. Bug reported - by Mike Stroyan - - 2/5 - --- -lib/readline/display.c - - fix off-by-one error when comparing against PROMPT_ENDING_INDEX, - which caused a prompt with invisible characters to be redrawn one - extra time in a multibyte locale. Change from <= to < fixes - multibyte locale, but I added 1 to single-byte definition of - PROMPT_ENDING_INDEX (worth checking) to compensate. Bug reported - by Egmont Koblinger - - 2/8 - --- -lib/readline/terminal.c - - call _emx_get_screensize with wr, wc like ioctl code for consistency - - new function, _win_get_screensize, gets screen dimensions using - standard Windows API for mingw32 (code from Denis Pilat) - - call _win_get_screensize from _rl_get_screen_size on mingw32 - -lib/readline/rlconf.h - - define SYS_INPUTRC (/etc/inputrc) as system-wide default inputrc - filename - -support/shobj-conf - - changes to make loadable builtins work on MacOS X 10.[34] - -builtins/pushd.def - - changes to make it work as a loadable builtin compiled with gcc4 - - 2/9 - --- -lib/readline/bind.c - - add SYS_INPUTRC as last-ditch default (if DEFAULT_INPUTRC does not - exist or can't be read) in rl_read_init_file - -lib/readline/doc/rluser.texi - - add description of /etc/inputrc as ultimate default startup file - - 2/10 - ---- -lib/readline/bind.c - - fix problem with rl_function_of_keyseq that returns a non-keymap - bound to a portion of the passed key sequence without processing - the entire thing. We can bind maps with existing non-map - functions using the ANYOTHERKEY binding code. - -variables.c - - shells running in posix mode do not set $HOME, as POSIX apparently - requires - - 2/15 - ---- -braces.c - - mkseq() now takes the increment as an argument; changed callers - - 2/16 - ---- -builtins/hash.def - - print `hash table empty' message to stdout instead of stderr - - 2/17 - ---- -lib/readline/readline.c - - when resetting rl_prompt in rl_set_prompt, make sure rl_display_prompt - is set when the function returns - - 2/18 - ---- -lib/readline/display.c - - further fixes to _rl_make_prompt_for_search from Eric Blake to deal - with multiple calls to expand_prompt - - 2/21 - ---- -builtins/hash.def - - don't print `hash table empty' message in posix mode - - 2/27 - ---- -lib/glob/sm_loop.c - - change extmatch() to turn off FNM_PERIOD in flags passed to recursive - calls to gmatch() when calling it with a substring after the start - of the string it receives. Changed `+', `*', `?, `@', and `!' cases - to do the right thing. Fixes bug reported by Benoit Vila - - -braces.c - - add QUIT; statements to mkseq to make large sequence generation - interruptible - - 2/28 - ---- -lib/glob/glob.c - - initialize nalloca in glob_vector - - 3/1 - --- -lib/glob/glob.c - - in glob_vector, when freeing up the linked list after some error, - make sure to set `tmplink' to 0 if `firstlink' is set to 0, else we - get multiple-free errors - - 3/5 - --- -trap.c - - inheritance of the DEBUG, RETURN, and ERR traps is now dependent - only on the `functrace' and `errtrace' shell options, as the - documentation says, rather than on whether or not the shell is in - debugging mode. Reported by Philip Susi - -parse.y - - in parse_matched_pair, don't recursively parse ${...} or other - ${...} constructs inside `` - - in parse_matched_pair, remove special code that recursively parses - quoted strings inside `` constructs. For Bourne shell compatibility - - 3/6 - --- -builtins/pushd.def - - let get_directory_stack take take an `int flags' argument and convert - $HOME to ~ if flags&1 is non-zero - -builtins/common.h - - change extern declaration for get_directory_stack - -variables.c - - call get_directory_stack with an arg of 0 to inhibit converting - $HOME to ~ in the result. Fixes cd ${DIRSTACK[1]} problem - reported by Len Lattanzi (cd fails because - the tildes won't be expanded after variable expansion) - -jobs.c - - changed hangup_all_jobs slightly so stopped jobs marked J_NOHUP - won't get a SIGCONT - -general.c - - changed check_binary_file() to check for a NUL byte instead of a - non-printable character. Might at some point want to check - entire (possibly multibyte) characters instead of just bytes. Hint - from ksh via David Korn - - 3/7 - --- -builtins/reserved.def - - changed runs of spaces to tabs in variables help text to make - indentation better when displayed - -builtins/mkbuiltins.c - - changes to avoid the annoying extra space that keeps gettext from - being passed an empty string - - 3/9 - --- -lib/glob/glob.c - - make sure globbing is interrupted if the shell receives a terminating - signal - - 3/14 - ---- -lib/readline/search.c - - call rl_message with format argument of "%" in _rl_nsearch_init - to avoid `%' characters in the prompt string from being interpreted - as format specifiers to vsnprintf/vsprintf - - 3/19 - ---- -parse.y, eval.c, input.h - - change execute_prompt_command to execute_variable_command; takes the - variable name as a new second argument - - 3/25 - ---- -bashline.c - - command_word_completion_function keeps track of when it's searching - $PATH and doesn't return directory names as matches in that case. - Problem reported by Pascal Terjan - - command_word_completion_function returns what it's passed as a - possible match if it's the name of a directory in the current - directory (only non-absolute pathnames are so tested). - - 3/27 - ---- -subst.c - - expand_arith_string takes a new argument: quoted. Either 0 (outside - subst.c) or Q_DOUBLE_QUOTES (substitution functions); changed callers - -subst.h - - changed extern declaration for expand_arith_string - -arrayfunc.c - - changed call to expand_arith_string in array_expand_index - - 3/31 - ---- -lib/readline/histfile.c - - change read_history_range to allow windows-like \r\n line endings - -execute_cmd.c - - add new variable, line_number_for_err_trap, currently set but not - used - - 4/2 - --- -lib/sh/strtrans.c - - add code to echo -e and echo with xpg_echo enabled to require - a leading 0 to specify octal constants - - 4/3 - --- -subst.c - - slight change to wcsdup() replacement: use memcpy instead of wcscpy - -parse.y - - before turning on W_COMPASSIGN, make sure the final character in the - token is a `(' (avoids problems with things like a=(4*3)/2) - - 4/4 - --- -lib/sh/snprintf.c - - in number() and lnumber(), turn off PF_ZEROPAD if explicit precision - supplied in format - - change number() and lnumber() to correctly implement zero-padding - specified by a non-zero `.precision' part of the format - -subst.c - - new flag for extract_delimited_string: EX_COMMAND. For $(...), so - we can do things like skip over delimiters in comments. Added to - appropriate callers - - changes to extract_delimited_string to skip over shell comments when - extracting a command for $(...) (EX_COMMAND is contained in the - flags argument) - - 4/5 - --- -subst.c - - first argument to skip_single_quoted is now a const char * - - new function, chk_arithsub, checks for valid arithmetic expressions - by balancing parentheses. Fix based on a patch from Len Lattanzi - - 4/6 - --- -{configure,config.h}.in - - add separate test for isnan in libc, instead of piggybacking on - isinf-in-libc test - -lib/sh/snprintf.c - - separate the isnan replacement function so it's guarded by its own - HAVE_ISNAN_IN_LIBC define - -lib/sh/wcsdup.c - - new file, contains replacement wcsdup library function from subst.c - with change back to using wcscpy - -Makefile.in,lib/sh/Makefile.in - - make sure wcsdup.c is compiled and linked in - -subst.c - - wcsdup now found in libsh; removed static definition - - 4/10 - ---- -lib/readline/callback.c - - loop over body of rl_callback_read_char as long as there is additional - input rather than just calling readline_internal_char, which does - not handle multi-character key sequences or escape-prefixed chars - -lib/readline/macro.c - - make sure we turn off RL_STATE_MACROINPUT when the macro stack is - empty if we are reading additional input with RL_STATE_MOREINPUT - -support/shobj-conf - - Mac OS X no longer likes the `-bundle' option to gcc when creating a - dynamic shared library - - 4/11 - ---- -lib/tilde/tilde.c - - don't try to dereference user_entry if HAVE_GETPWENT isn't defined - -lib/readline/input.c - - make sure chars_avail is not used without being assigned a value in - rl_gather_tyi - - use _kbhit() to check for available input on Windows consoles, in - rl_gather_tyi and _rl_input_available - - 4/21 - ---- -lib/readline/display.c - - calculate (in expand_prompt) and keep track of length of local_prompt - in local_prompt_len; use where appropriate - - when using o_pos to check whether or not we need to adjust - _rl_last_c_pos after calling update_line, assume that it's correct - (a buffer index in non-multibyte locales and a cursor position in - multibyte locales) and adjust with wrap_offset as appropriate - - in update_line, set cpos_adjusted to 1 after calling - _rl_move_cursor_relative to move to the end of the displayed prompt - string - - in _rl_move_cursor_relative, check that the multibyte display - position is after the last invisible character in the prompt string - before offsetting it by the number of invisible characters in the - prompt (woff) - - 4/26 - ---- -lib/readline/doc/{rluser.texi,readline.3} - - make sure to note that key bindings don't allow any whitespace - between the key name or sequence to be bound and the colon - - 4/28 - ---- -lib/readline/display.c - - in update_line, make sure we compare _rl_last_c_pos as strictly less - than PROMPT_ENDING_INDEX, since it's 0-based, to avoid multiple - prompt redraws - - 5/4 - --- -parse.y - - in decode_prompt_string, only prefix the expansion of \[ or \] - with CTLESC if the corresponding readline escape character is - CTLESC (coincidentally the same as \[) or CTLNUL. Bug report sent - by Mike Frysinger prompted the discovery - -aclocal.m4 - - slight change to test for /dev/fd to compensate for a linux - failing; suggested by Mike Frysinger - - 5/9 - --- -arrayfunc.c - - broke assign_array_var_from_string into two functions: - expand_compound_array_assignment and assign_compound_array_list; - assign_array_var_from_string just calls those functions now - -arrayfunc.h - - new extern declarations for expand_compound_array_assignment and - assign_compound_array_list - -subst.c - - in do_compound_assignment, call expand_compound_array_assignment - before creating the local variable so a previous inherited - value can be used when expanding the rhs of the compound assignment - statement - - 5/11 - ---- -doc/{bash.1,bashref.texi} - - clarifed `trap' description to make it clear that trapped signals - that are not set to SIG_IGN are reset when a subshell is created - - 5/18 - ---- -locale.c - - change reset_locale_vars to call setlocale (LC_ALL, "") if LANG - is unset or NULL - - if LANG is unset or NULL, reset the export environment before - calling setlocale in reset_locale_vars, and trust that it will - change the environment setlocale() inspects - - 5/21 - ---- -lib/readline/history.c - - new function, HIST_ENTRY *alloc_history_entry (char *string, char *ts); - creates a new history entry with text STRING and timestamp TS (both - of which may be NULL) - - new function, HIST_ENTRY *copy_history_entry (HIST_ENTRY *hist), - which copies the line and timestamp entries to new memory but just - copies the data member, since that's an opaque pointer - - new function, void replace_history_data (int which, histdata_t *old, histdata_t *new) - which replaces the `data' member of specified history entries with - NEW, as long as it is OLD. WHICH says which history entries to - modify - - add calls to replace_history_data in rl_free_undo_list and - rl_do_undo - -lib/readline/undo.c - - new function, alloc_undo_entry (enum undo_code what, int start, int end, char *text) - takes care of allocating and populating a struct for an individual - undo list entry - - new function: _rl_copy_undo_entry(UNDO_LIST *entry) - - new function: _rl_copy_undo_list(UNDO_LIST *head) - -lib/readline/rlprivate.h - - new extern declarations for _rl_copy_undo_{entry,list} - -execute_cmd.c - - change execute_cond_node so that quoting the rhs of the =~ - operator forces string matching, like the == and != operators - - 5/23 - ---- -redir.c - - add_undo_redirect now takes as an additional argument the type of - redirection we're trying to undo - - don't add a "preservation" redirection for fds > SHELL_FD_BASE if - the redirection is closing the fd - - 5/24 - ---- -subst.c - - make sure that parameter_brace_substring leaves this_command_name - set to either NULL or its previous value after setting it so that - arithmetic evaluation errors while expanding substring values - contain meaningful information - - 6/9 - --- -execute_cmd.c - - make sure that SUBSHELL_ASYNC and SUBSHELL_PIPE are set as flag bits - in subshell_environment, rather than setting only a single value - - change execute_subshell_builtin_or_function to give the `return' - builtin a place to longjmp to when executed in a subshell or pipeline - (mostly as the last command in a pipeline). Bug reported by - Oleg Verych - - in execute_simple_command, make sure to call execute_disk_command - with the_printed_command_except_trap to keep DEBUG trap command - strings from overwriting the command strings associated with jobs - and printed in job control messages. Bug reported by Daniel Kahn - Gillmor - -[bash-3.2-alpha frozen] - - 6/22 - ---- -syntax.h - - add new CBLANK (for [:blank:] class) flag value for syntax table and - shellblank(c) character test macro - -mksyntax.c - - add support for setting CBLANK flag in the syntax table depending on - whether or not isblank(x) returns true for character x - -locale.c - - change locale_setblanks to set or unset CBLANK flag for each - character when locale changes - -parse.y - - change call to whitespace(c) in lexical analyzer (read_token()) to - call shellblank(c) instead, so locale-specific blank characters are - treated as white space. Fixes bug reported by Serge van deb Boom - - -print_cmd.c - - when printing redirections, add a space between <, >, and <> and the - following word, to avoid conflicts with process substitution. Bug - reported by Ittay Dror - - 6/26 - ---- -configure.in - - set CROSS_COMPILE to the empty string by default, so we don't inherit - a random value from the environment. Bug reported by - Lee Revell - - 6/29 - ---- -lib/glob/xmbsrtowcs.c - - make sure destp is non-null before assigning a 0 to *destp in - xdupmbstowcs. Fix from Louiwa Salem - -execute_cmd.c - - fix execute_in_subshell to make sure asynchronous isn't set to 0 - before subshell_environment is set appropriately and - setup_async_signals is run. Based on report by Louiwa Salem - - -lib/readline/bind.c - - in rl_generic_bind(), make sure that the keys array is freed before - an error return. Fix from Louiwa Salem - - 7/1 - --- -builtins/read.def - - make sure all editing code is protected with #ifdef READLINE, esp. - unwind-protect that restores the default completion function - -lib/readline/display.c - - make sure to set local_prompt_len in rl_message() [in bash-3.2-alpha] - - 7/5 - --- -builtins/printf.def - - add more of echo's write error handling to printf. Suggested by - martin.wilck@fujitsu-siemens.com - - 7/7 - --- -lib/readline/display.c - - save and restore local_prompt_len in rl_{save,restore}_prompt - [in bash-3.2-alpha] - - 7/8 - --- -[bash-3.2-alpha released] - - 7/9 - --- -lib/readline/display.c - - make sure that _rl_move_cursor_relative sets cpos_adjusted when it - offsets `dpos' by wrap_offset in a multi-byte locale. Bug reported - by Andreas Schwab and Egmont Koblinger - -subst.c - - make sure that the call to mbstowcs in string_extract_verbatim is - passed a string with enough space for the closing NUL. Reported - by Andreas Schwab - - 7/18 - ---- -lib/readline/{display,terminal}.c - - remove #ifdefs for HACK_TERMCAP_MOTION so we can use - _rl_term_forward_char in the redisplay code unconditionally - -lib/readline/rlprivate.h - - new extern declaration for _rl_term_forward_char - -lib/readline/display.c - - in _rl_move_cursor_relative, use `dpos' instead of `new' when - deciding whether or not a CR is faster than moving the cursor from - its current position - - in _rl_move_cursor_relative, we can use _rl_term_forward_char to - move the cursor forward in a multibyte locale, if it's available. - Since that function doesn't have a handle on where the cursor is in - the display buffer, it has to output a cr and print all the data. - Fixes rest of problem reported by Egmont Koblinger - - change variable denoting the position of the cursor in the line buffer - from c_pos (variable local to rl_redisplay) to cpos_buffer_position - (variable local to file) for future use by other functions - - 7/25 - ---- -lib/malloc/{stats,table}.h - - include for prototypes for memset, strlen - -lib/termcap/{termcap,tparam}.c - - include and provide macro replacement for bcopy if - necessary - - 7/27 - ---- -lib/readline/histexpand.c - - add support for `<<<' here-string redirection operator to - history_tokenize_word. Bug reported by agriffis@gentoo.org - -externs.h - - don't add prototype for strerror() if HAVE_STRERROR defined - - 7/29 - ---- -subst.c - - in list_string, use `string' instead of `s' -- s is not initialized - - 8/9 - --- -subst.c - - fix parameter_brace_expand to set W_HASQUOTEDNULL in the WORD_DESC it - returns if the result of parameter_brace_substring is a quoted null - ("\177"). Fixes bug reported by Igor Peshansky - - 8/16 - ---- -lib/readline/readline.h - - new #define, READERR, intended to be used to denote read/input errors - -lib/readline/input.c - - in rl_getc, if read() returns an error other than EINTR (after the - EWOULDBLOCK/EAGAIN cases are handled), return READERR rather than - converting return value to EOF if readline is reading a top-level - command (RL_STATE_READCMD) - -lib/readline/readline.c - - if rl_read_key returns READERR to readline_internal_char[loop], - abort as if it had read EOF on an empty line, without any conversion - to newline, which would cause a partial line to be executed. This - fixes the bug reported by Mathieu Bonnet - -aclocal.m4 - - when testing for validity of /dev/fd/3, use /dev/null instead of - standard input, since the standard input fails with linux and `su'. - Bug reported by Greg Shafer - - 8/17 - ---- -Makefile.in - - switch the TAGS and tags targets so TAGS is the output of `etags' and - tags is the output of `ctags'. Suggested by Masatake YAMATO - - 8/25 - ---- -execute_cmd.c - - change code to match documentation: set BASH_COMMAND (which takes its - value from the_printed_command_except_trap) only when not running a - trap. Rocky says the debugger is ok with this, and this is what his - original diffs did - - 8/29 - ---- -variables.c - - change set_if_not to create shell_variables if it is NULL, since - -o invocation options can cause variables to be set before the - environment is scanned - -[bash-3.2-beta frozen] - - 9/5 - --- -[bash-3.2-beta released] - - 9/8 - --- -variables.c - - change dispose_used_env_vars to call maybe_make_export_env - immediately if we're disposing a temporary environment, since - `environ' points to the export environment and getenv() will use - that on systems that don't allow getenv() to be replaced. This - could cause the temporary environment to affect the shell. Bug - reported by Vasco Pedro - -builtins/echo.def,doc/{bash.1,bashref.texi} - - clarify that `echo -e' and echo when the `xpg_echo' shell option is - enabled require the \0 to precede any octal constant to be expanded. - Reported by Vasco Pedro - - 9/12 - ---- -builtins/printf.def - - make sure `%q' format specifier outputs '' for empty string arguments - Bug reported by Egmont Koblinger - -make_cmd.c - - change make_here_document to echo lines in here-doc if set -v has - been executed. Reported by Eduardo Ochs - -aclocal.m4 - - change BASH_CHECK_MULTIBYTE: - o replace check for wctomb with check for wcrtomb - o add checks for wcscoll, iswctype, iswupper, iswlower, - towupper, towlower - o add call to AC_FUNC_MBRTOWC to check for mbrtowc and mbstate_t - define HAVE_MBSTATE_T manually - o add checks for wchar_t, wctype_t, wint_t - -config.h.in - - add defines for wcscoll, iswctype, iswupper, iswlower, towupper, - towlower functions - - replace define for wctomb with one for wcrtomb - - add defines for wchar_t, wint_t, wctype_t types - -config-bot.h, lib/readline/rlmbutil.h - - add check for HAVE_LOCALE_H before defining HANDLE_MULTIBYTE - - add checks for: ISWCTYPE, ISWLOWER, ISWUPPER, TOWLOWER, TOWUPPER - - add checks for: WCTYPE_T, WCHAR_T, WCTYPE_T - - 9/13 - ---- -lib/readline/display.c - - when displaying prompts longer than the screenwidth in rl_redisplay, - and looking for the index of the last character whose buffer index - is <= the screen width to set up the inv_lbreaks array, make sure to - catch the case where the index == the screen width (an off-by-one - error occurs otherwise with prompts one character longer than the - screen width). Bug reported by Alexey Toptygin - -configure.in - - change DEBUGGER_START_FILE to start with ${ac_default_prefix}/share, - like bashdb installs itself. Reported by Nick Brown - - - 9/14 - ---- -lib/readline/display.c - - make multibyte code that computes the buffer indices of line breaks - for a multi-line prompt dependent on MB_CUR_MAX, so we don't take - the function call hit unless we're in a locale that can have - multibyte characters - - 9/19 - ---- -subst.c - - make dequote_list extern so other parts of the shell can use it - -subst.h - - extern declaration for dequote_list - -builtins/read.def - - call dequote_list before assigning words read to array variable if - we saw an escape character. Old code left spurious CTLESCs in the - string after processing backslashes. Bug reported by Daniel Dawson - - - 9/21 - ---- -[bash-3.2 frozen] - - 10/9 - ---- -support/shobj-coonf - - change -fpic to -fPIC for FreeBSD systems (needed for SPARC at least) - - 10/11 - ----- -[bash-3.2 released] - - 10/12 - ----- -parse.y - - change parse_matched_pair to make sure `` command substitution does - not check for shell comments while parsing. Bug reported against - bash-3.2 by Greg Schaefer - - 10/14 - ----- -parse.y - - add new parser_state flag: PST_REGEXP; means we are parsing a - regular expression following the =~ conditional operator - - cond_node sets PST_REGEXP after reading the `=~' operator - - change read_token to call read_token_word immediately if the - PST_REGEXP bit is set in parser_state - - change read_token_word to skip over `(' and `|' if PST_REGEXP is - set, since those characters are legitimate regexp chars (but still - parse matched pairs of parens) - - 10/16 - ----- -builtins/ulimit.def - - add -e and -r to $SHORT_DOC usage string - -po/ru.po - - fix encoding; Russian text in the file is actually encoded in KOI8-R - - 10/23 - ----- -shell.c - - make sure that the call to move_to_high_fd in open_shell_script - passes 1 for the `check_new' parameter so open high file descriptors - don't get closed and reused. Bug reported by Mike Stroyan - - -doc/bashref.texi - - fixes for typos and misspellings sent in by Brian Gough - - 10/24 - ----- -support/shobj-conf - - make netbsd shared library creation like openbsd's until I hear - differently (called using `gcc -shared') - - 10/26 - ----- -subst.c - - fix bug in parameter_brace_patsub so if the first character of the - expanded pattern is a `/', it is not taken as a global replacement - specifier. Bug reported on forums.nekochan.net - - 10/27 - ----- -builtins/printf.def - - if we need an extern declaration for asprintf, make sure we include - stdarg.h or varargs.h, whichever is appropriate - - if we do not have asprintf, add an extern declaration using - stdarg format. This fixes the bugs with %G on IRIX reported by - Matthew Woehlke and Stuart Shelton - - - -lib/sh/snprintf.c - - add note to not call log_10 with 0 argument -- we don't want to do - what real log10 does (-infinity/raise divide-by-zero exception) - - make sure numtoa (used by dtoa) takes the precision into account - when computing the fractional part with an argument of `0.0' - - make sure `g' and `G' formats don't print radix char if there are - no characters to be printed after it (change to floating()) - - change callers of log_10 (exponent, 'g' and 'G' cases in - vsnprintf_internal) to not call it with 0 for argument. This fixes - the hang reported on IRIX by Matthew Woehlke - and Stuart Shelton - - 10/28 - ----- -builtins/{caller,pushd}.def - - changed longdoc strings in loadable builtin section to be single - strings, as put in the build directory builtins.c file, to aid - translators - - 11/1 - ---- -execute_cmd.c - - reset subshell_environment to 0 after make_child() call in - execute_null_command. Fix provided by Roy Marples - - - 11/7 - ---- -lib/tilde/tilde.c -lib/readline/{util,undo,callback,input,isearch,kill}.c - - make sure that memory allocated with xmalloc is freed with xfree - - 11/9 - ---- -lib/readline/display.c - - make sure that _rl_redisplay_after_sigwinch clears the last displayed - line instead of the current line (instead of assuming that the - cursor is on the last line). Fixes bug reported by Egmont - Koblinger - - 11/10 - ----- -lib/readline/display.c - - make sure that _rl_col_width is never called with MB_CUR_MAX == 1, - since it doesn't count invisible characters and they are not - compensated for. Added a warning in _rl_col_width if called when - MB_CUR_MAX == 1. Bug reported and solution suggested by Eric - Blake - - 11/11 - ----- -lib/readline/display.c - - make sure _rl_wrapped_line is initialized to inv_lbsize int chars. - inv_lbsize and vis_lbsize are the same at that point, but it makes - the intent clearer. Fix from jan.kratochvil@redhat.com. - - in rl_redisplay, make sure we call memset on _rl_wrapped_line with - its full initialized size: inv_lbsize*sizeof(int). Fix from - jan.kratochvil@redhat.com. - - wrap the invisible and visible line variables and _rl_wrapped_line - into line_state structures, which can be swapped more efficiently. - Have to watch the wrapped_line field, since there's now one for - each struct. Changes from jan.kratochvil@redhat.com. - -lib/readline/complete.c - - in stat_char, check for `//server' on cygwin and return `/', since - it will always behave as a directory. Fix from Eric Blake - -lib/readline/histfile.c - - Cygwin's mmap() works in recent versions, so don't #undef HAVE_MMAP. - Recommendation from Eric Blake - -lib/readline/rlwinsize.h - - make sure tcflow() is defined on SCO Unix. Fix from William Bader - -aclocal.m4 - - add check for localeconv to AM_INTL_SUBDIR macro - -config.h.in - - add HAVE_LOCALECONV - -lib/sh/snprintf.c - - add check for HAVE_LOCALECONV for GETLOCALEDATA macro - -general.[ch] - - first argument to legal_number is now `const char *' - - 11/14 - ----- -lib/readline/{readline,rlprivate}.h - - move rl_display_prompt declaration from rlprivate.h to readline.h - -lib/readline/util.h - - new function: rl_free(void *mem), for use by users of readline dlls - on Windows - -lib/readline/readline.h - - new extern declaration for rl_free - -lib/readline/doc/rltech.texi - - document rl_free and rl_display_prompt for use by application writers - - 11/15 - ----- -aclocal.m4 - - change tests for /dev/fd and /dev/stdin to use constructs of the form - (exec test ... ) instead of test ... to avoid bash's /dev/fd and - /dev/stdin emulation - - 11/16 - ----- -jobs.c - - in delete_job, reset_current was being called before the job slot - was cleared -- moved after job_slots[job] was set to NULL. Fixes - bug reported by Dan Jacobson - - 11/19 - ----- -findcmd.c - - when the checkhash option is set, fix the check for the hashed - pathname being an existing executable file. Old code required a - hash table deletion and re-addition. Bug reported by Linda - Walsh - - 11/21 - ----- -subst.c - - in pos_params, handle case of `start' == 0 by making the list of - positional parameters begin with $0 - - in parameter_brace_substring, increment `len' if start == 0, sicne - we will be adding $0 to the beginning of the list when we process it - -doc/{bash.1,bashref.texi} - - document new behavior of `0' offset when using substring expansion - with the positional parameters - -support/shobj-conf - - changes to shared object creation for loadable builtins on Mac OS X - 10.4 to use libtool instead of ld by specifying -dynamiclib - argument and changing options to be appropriate for libtool. This - winds up creating a dynamic shared library instead of an executable - - 11/24 - ----- -{jobs,nojobs}.c - - don't set last_asynchronous_pid to the child's pid in the child - for asynchronous jobs (for compatibility -- all other posix shells - seem to do it this way). This means that (echo $! )& echo $! should - display two different pids. Fix from discussion on the - austin-group-l list - -builtins/mkbuiltins.c - - change builtins.c file generation so short doc strings are marked for - gettext and available for subsequent translation. Suggestion by - Benno Schulenberg - -builtins/{bind,cd,hash,inlib,printf,pushd,test,times,ulimit}.def -lib/malloc/malloc.c -{shell,subst}.c - - fix a few strings that were not marked as translatable. Fix from - Benno Schulenberg - -lib/readline/misc.c - - new function, _rl_revert_all_lines(void). Goes through history, - reverting all entries to their initial state by undoing any undo - lists. - -lib/readline/rlprivate.h - - extern declaration for _rl_revert_all_lines - -rldefs.h - - add #undef HAVE_STRCOLL if STRCOLL_BROKEN is defined, prep to move - from config.h.in. Problem reported by Valerly Ushakov - - - 11/25 - ----- -lib/readline/readline.c - - call _rl_revert_all_lines from readline_internal_teardown if the - variable _rl_revert_all_at_newline is non-zero - - declare _rl_revert_all_lines initially 0 - - 11/27 - ----- -doc/{bash.1,bashref.texi} - - make sure to be explicit that `typeset +r' cannot remove the readonly - attribute from a variable - - 11/28 - ----- -lib/sh/zmapfd.c - - new file, implements zmapfd(), which takes a file and returns its - contents in a string - -externs.h - - extern declaration for zmapfd - - 11/29 - ----- -builtins/evalfile.c - - in _evalfile, use zmapfd to read the contents of the file into a - string, rather than using the size reported by stat and reading that - many characters, if the file is not a regular file (for things like - named pipes, stat reports the size as 0) - - 12/3 - ---- -lib/sh/snprintf.c - - make sure number() sets the FL_UNSIGNED flag for %x and %X, so - fmtulong treats them as unsigned numbers. Fixes bug reported by - James Botte - - 12/13 - ----- -lib/readline/util.c - - new function, _rl_ttymsg, for internal warning messages -- does - redisplay after printing message - - new function, _rl_errmsg, for internal warning/error messages -- - does not do redisplay after printing message - -lib/readline/rlprivate.h - - new extern declaration for _rl_ttymsg, _rl_errmsg - -lib/readline/{bind,callback,complete,display,rltty}.c - - use _rl_ttymsg/_rl_errmsg instead of direct writes to stderr - -lib/sh/tmpfile.c - - in get_tmpdir(), make sure that $TMPDIR names a writable directory; - otherwise skip it. This catches names longer than PATH_MAX, but in - case it doesn't test that the length does not exceed PATH_MAX. Fixes - heap overrun bug reported by Eric Blake - - 12/16 - ----- -builtin/{set,declare,shopt,trap,wait,bind,complete,enable,fc,history,read,setattr}.def -doc/{bash.1,bashref.texi} - - improvements and clarifications to the help text associated with - several builtins, in some cases bringing them into line with the - man page text. From Benno Schulenberg - -doc/{bash.1,bashref.texi} - - add `E' and `T' to the synopsis of the set builtin. - From Benno Schulenberg - -builtins/{break,exit,fg_bg,hash,jobs,type,ulimit}.def -builtins/{common,evalfile}.c -{error,expr,jobs,mksyntax,nojobs,shell,subst,version,siglist}.c - - add gettextizing marks to untranslated strings - From Benno Schulenberg - - 12/19 - ----- -builtins/common.c - - change display_signal_list (used by `trap -l' and `kill -l') to use - five columns instead of 4 to display signal names - -builtins/help.def - - use the true terminal width instead of assuming 80 when displaying - help topics, leaving two characters of whitespace between horizontal - descriptions instead of 1 - - change to print in columns with entries sorted down rather than across - (that is, like `ls' rather than `ls -x'). Change inspired by Benno - Schulenberg - -jobs.h - - give values to the JOB_STATE enumerations so they can be used as - bitmasks, too - - 12/22 - ----- -doc/{bash.1,bashref.texi} - - change description of `set' to make it clearer that you can use - `+' to turn off options - - clarify in the description of word splitting that sequences of - IFS whitespace at the beginning or end of the string are ignored - - 12/26 - ----- -doc/bashref.texi - - move `shopt' builtin to its own section; change internal references - from `Bash Builtins' to the new shopt builtin - - new section for builtins that modify shell behavior in `Shell - Builtin Commands'; move set and shopt to new section. Changes - inspired by Benno Schulenberg - -{redir,subst}.c - - add MT_USETMPDIR flag to calls to sh_mktmpfd and sh_mktmpname. Bug - reported by Eric Blake - -{configure,Makefile}.in - - changes so that the pathname for DEBUGGER_START_FILE is substituted - into pathnames.h at make time (allowing more flexibility in setting - `prefix' or `datadir') instead of at configure time. Suggested by - Nick Brown - -shell.c - - declaration for have_devfd; initialized from HAVE_DEV_FD - - declaration for check_jobs_at_exit; initialized to 0 - - declaration for autocd; initialized to 0 - -variables.c - - new dynamic variable, BASHPID, always set from return value from - getpid() (changes even when $$ doesn't change). Idea from Bruce - Korb - -builtins/exit.def - - if check_jobs_at_exit is non-zero, list jobs if there are any stopped - or running background jobs; don't exit shell if any running jobs - -execute_cmd.c - - in execute_simple_command, if the first word of a simple command is - a directory name (after looking for builtins, so `.' isn't caught) - that isn't found in $PATH, and `autocd' is non-zero, prefix a "cd" - to the command words - -builtins/shopt.def - - new `checkjobs' option, changes value of check_jobs_at_exit - - new `autocd' option, changes value of autocd - -pcomplete.c - - add COMP_TYPE, set to rl_completion_type, to list of variables set - by bind_compfunc_variables and unset by unbind_compfunc_variables - -doc/{bash.1,bashref.texi} - - document BASHPID - - document new shopt `checkjobs' option - - document new shopt `autocd' option - - document COMP_TYPE completion variable - - 12/29 - ----- -aclocal.m4 - - in BASH_SYS_SIGLIST, check HAVE_DECL_SYS_SIGLIST instead of the - obsolete and no-longer-supported SYS_SIGLIST_DECLARED - - 12/30 - ----- -lib/readline/vi_mode.c - - add ` (backquote) to the list of vi motion characters - - in rl_vi_delete_to, rl_vi_change_to, and rl_vi_yank_to, don't delete - character under the cursor if the motion command moves the cursor - backward, so add F and T to the commands that don't cause the - mark to be adjusted - - add ` to the characters that don't cause the mark to be adjusted - when used as a motion command, since it's defined to behave that way - - when a motion character that may adjust the mark moves point - backward, don't adjust the mark so the character under the cursor - isn't deleted - -lib/readline/complete.c - - add variable rl_sort_completion_matches; allows application to - inhibit match list sorting - - add variable rl_completion_invoking_key; allows applications to - discover the key that invoked rl_complete or rl_menu_complete - -lib/readline/readline.h - - extern declarations for rl_completion_invoking_key and - rl_sort_completion_matches - -lib/readline/doc/rltech.texi - - documented rl_completion_invoking_key and rl_sort_completion_matches - -pcomplete.c - - export variable COMP_KEY to completion functions; initialized from - rl_completion_invoking_key; unset along with rest of completion - variables - -doc/{bash.1,bashref.texi},lib/readline/doc/rluser.texi - - document COMP_KEY - -[many files] - - changes to make variables and function parameters `const' for better - text sharing. Changes originally from Andreas Mohr - - - 1/4/2007 - -------- -lib/intl/Makefile.in - - use cmp before copying libgnuintl.h to libintl.h -- maybe save a few - rebuilds - -lib/builtins/Makefile - - fixes to build LIBINTL_H if necessary, dependency on this for - mkbuiltins.o prevented `make -j 6' from working correctly - - 1/8 - --- -subst.c - - new function, fifos_pending(), returns the count of FIFOs in - fifo_list (process substitution) - -subst.h - - extern declaration for fifos_pending() - -execute_cmd.c - - in execute_simple_command, if CMD_NO_FORK is set before we call - execute_disk_command, make sure there are no FIFOs in the expanded - words (from process substitution) and turn off CMD_NO_FORK if there - are, so they can get unlinked when the command finishes - - 1/10 - ---- -subst.c - - read_comsub now takes a flags parameter and returns appropriate W_* - flags in it - - command_substitute now returns a WORD_DESC *, with the string it used - to return as the `word' and `flags' filled in appropriately - -subst.h - - changed extern declaration for command_substitute - -{pcomplete,subst}.c - - changed callers of command_substitute appropriately - -subst.c - - string_extract_verbatim now takes an additional int flags argument; - changed callers - - 1/11 - ---- -support/texi2html - - fix problem that caused index links to not be generated if the first - index node had a name different than the node name - -doc/bashref.texi - - encapsulated all indexes into a single `Indexes' appendix; works - around bug fixed in texi2html - - 1/12 - ---- -subst.c - - add call to sv_histtimefmt in initialize_variables so HISTTIMEFORMAT - from the environment is honored. Fix from Ark Submedes (heh) - - -lib/readline/histfile.c - - make sure that the first character following the history comment - character at the beginning of a line is a digit before interpreting - it as a timestamp for the previous line - -doc/{bash.1,bashref.texi},lib/readline/doc/hsuser.texi - - added detail to make it clear exactly how history timestamps are - saved to and read from the history file - -subst.c - - change quote_escapes to add CTLESC before spaces if IFS is null, - just in case we have to split on literal spaces later on (e.g., in - case of unquoted $@). Corresponding changes to dequote_escapes. - Fixes a couple of problems reported by Brett Stahlman - - - 1/14 - ---- -subst.c - - make same change to read_comsub to add CTLESC before ' ' if $IFS is - null, since we will split on literal spaces later - - 1/15 - ---- -array.c - - new function, array_quote_escapes (ARRAY *a), calls quote_escapes - on each element of the array in the same way array_quote calls - quote_string - - call array_quote_escapes if match is not quoted in array_patsub - - array_slice is now used, so remove the #ifdef INCLUDE_UNUSED define - - change structure of array_subrange to call array_slice to create a - new array with the desired subset of elements, then call array_quote - or array_quote_escapes as necessary, like array_patsub. Convert to - a string by calling array_to_string on the sliced-out array - -array.h - - new extern declaration for array_quote_escapes - -subst.c - - since array_patsub now calls quote_escapes as necessary, callers - don't need to call it after array_patsub returns. Fixes first bug - reported by Brett Stahlman - - since array_subrange now calls quote_escapes as necessary, callers - don't need to call it after array_patsub returns. Same fix as - for array_patsub - - 1/31 - ---- -configure.in - - add -DSOLARIS to LOCAL_CFLAGS for solaris x - -config-bot.h - - don't #undef HAVE_GETCWD if GETCWD_BROKEN and SOLARIS are both - defined. Solaris's loopback mount implementation breaks some of the - file system assumptions the replacement getcwd uses. - -builtins/common.c - - if GETCWD_BROKEN is defined, call getcwd with PATH_MAX for the size - argument, so it will allocate a buffer for the current working dir - with that size, instead of one that's `big enough' - -config.h.in - - add #undef PRI_MACROS_BROKEN for AIX 4.3.3 - -pathexp.h - - new flag value for quote_string_for_globbing: QGLOB_REGEXP (quoting - an ERE for matching as a string) - -pathexp.c - - change quote_string_for_globbing to understand QGLOB_REGEXP - -execute_cmd.c - - change execute_cond_node to pass 2 (regexp match), 1 (shell pattern - match), or 0 (no matching) to cond_expand_word - -subst.c - - change cond_expand_word to translate SPECIAL==2 into passing - QGLOB_REGEXP to quote_string_for_globbing - -locale.c - - by default, if all else fails, set shell's idea of locale to "" - instead of its idea of `default_locale' -- the library functions - behave better with that value - - 2/2 - --- -builtins/printf.def - - if PRI_MACROS_BROKEN is defined, #undef PRIdMAX (AIX 4.3.3 broken) - - 2/3 - --- -Makefile.in,{builtins,doc}/Makefile.in,lib/*/Makefile.in - - add assignment for datarootdir as per GNU coding standards - -Makefile.in,builtins/Makefile.in,lib/intl/Makefile.in,po/Makefile.in.in - - use @localedir@ instead of $(datadir)/locale in assignment - - 2/13 - ---- -jobs.c - - fix compact_jobs_list to not return js.j_lastj, since that is in use - and should not be overwritten. Fix from Len Lattanzi - - - 2/16 - ---- -lib/readline/text.c - - change rl_forward_char to allow moving to the end of the line when - using the arrow keys in vi insertion mode, rather than having the - behavior identical between vi command and insertion modes. Change - suggested by Hugh Sasse - - 2/19 - ---- -CWRU/audit-patch - - patch from Steve Grubb of RedHat to make bash - audit root's behavior by logging commands using his audit - framework. Enabled if the shell's name is `aubash'. - - 3/8 - --- -jobs.c - - use WSTATUS (p->status) instead of bare p->status. Fix from - Jim Brown - - 3/9 - --- -lib/readline/{complete,input,isearch,misc,readline,text,vi_mode}.c - - make sure cases where rl_read_key returns -1 (usually due to EIO - because the controlling tty has gone away) are handled correctly. - Prompted by report from Thomas Loeber - - 3/10 - ---- -sig.c - - new function, top_level_cleanup, callable from contexts where some - cleanup needs to be performed before a non-fatal call to - jump_to_top_level - -sig.h - - new extern declaration for top_level_cleanup - -builtins/common.c - - add calls to top_level_cleanup before calls to jump_to_top_level - in a builtin command context (no_args(), get_numeric_arg()). Fixes - bug reported by Ian Watson - -lib/readline/display.c - - in _rl_move_cursor_relative, use `new' when comparing against - the last invisible character in the prompt, since they both denote - buffer indices when in a multibyte locale, whereas `dpos' is a - display position - - 3/13 - ---- -lib/readline/complete.c - - set rl_completion_append_character to the default (' ') in - set_completion_defaults(). Fixes bug reported by David Emerson - - - 3/23 - ---- -builtins/evalfile.c - - make sure read() returns a value >= 0 before using it as an index - into string[] - - use a variable of type `ssize_t' for return value from read() - - only try to read the entire contents of a regular file in one shot - if the file size is less than SSIZE_MAX. These fix problems - reported by hooanon05@yahoo.co.jp. - -include/typemax.h - - define SSIZE_MAX as 32767 if it's not defined - -lib/readline/display.c - - in rl_redisplay() and update_line(), if redrawing the prompt because - it contains invisible characters, make sure we redraw the character - indicating a modified history line and take it into account when - computing _rl_last_c_pos - - in update_line, if deleting characters and redrawing the new text, - make sure we adjust _rl_last_c_pos by wrap_offset in a multibyte - locale if the text we're drawing starts before or at the last - invisible character in the prompt string. Fixes bug reported on - bug-readline by J Pelkey - -parse.y - - when adding at CTLESC character to the current token, do not - escape it with CTLESC if pass_next_character indicates that the - CTLESC was escaped by a backslash. Fixes bug reported by - Paul Bagshaw . - - 3/25 - ---- -lib/readline/text.c - - in rl_forward_char, short-circuit the loop if in emacs mode and - rl_point == rl_end. Fixes problem with multibyte locales - reported by Len Lattanzi - - 3/29 - ---- -command.h - - new flag for subshell_environment: SUBSHELL_PROCSUB, for process - substitution - -subst.c - - add SUBSHELL_PROCSUB to subshell_environment in process_substitute - - 3/30 - ---- -doc/Makefile.in - - fix installation of bash.info to understand that it is in the build - directory, not the source directory - -mailcheck.c - - new function, init_mail_dates, calls remember_mail_dates only if - there are no mailboxes in `mailfiles' - - new function, init_mail_file, initializes a FILEINFO, using the - last time mail was checked as the mtime and atime (or the time the - shell was started if last_time_mail_checked is uninitialized) - - call init_mail_file instead of update_mail_file in add_mail_file, - called from remember_mail_dates (which is supposed to initialize - the list of mail files) - - new convenience functions, alloc_mail_file and dispose_mail_file to - allocate and free FILEINFO structs - -mailcheck.h - - extern declaration for init_mail_dates - -shell.c - - call init_mail_dates instead of remember_mail_dates - - 4/4 - --- -builtins/read.def - - changes to print $PS2 when a line is continued with a backslash in - an interactive shell. This is as POSIX requires - - 4/5 - --- -subst.c - - make sure quote_escapes is only ever called when the word to be - escaped is not marked as double-quoted -- cleaner, and allows us - to make certain assumptions - - 4/6 - --- -subst.c - - change all EX_* defines to begin with SX_ - - new flag, SX_NOCTLESC, obeyed by string_extract_verbatim, tells it - to not obey CTLESC quoting - - change quote_escapes to not quote CTLESC with CTLESC if one of the - chars in $IFS is CTLESC, since the return value from quote_string - will be passed to word splitting and filename generation - - change read_comsub to do the same thing for unquoted command - substitutions - - change list_string to pass SX_NOCTLESC if CTLESC is one of the - chars in $IFS, so it will split on CTLESC instead of using it as a - quote character - - 4/7 - --- -subst.c - - slight change to string_extract_verbatim to allow CTLESC to quote - CTLNUL even if SX_NOCTLESC is set in the flags passed, to protect - the CTLNULs from future calls to remove_quoted_nulls. Only - matters when $IFS contains CTLESC - - changes to cope with $IFS containing CTLNUL in the same way as the - CTLESC changes - -builtins/read.def - - changes to cope with $IFS containing CTLNUL in the same way as the - CTLESC changes - - 4/16 - ---- -lib/sh/strftime.c - - a couple of fixes to the `%z' code - -eval.c - - add an fflush after printing the auto-logout message - - 4/24 - ---- -subst.c - - add call to top_level_cleanup in exp_jump_to_top_level to get things - like unwind-protects and the loop levels cleaned up - -{arrayfunc,expr,variables}.c - - add calls to top_level_cleanup before jump_to_top_level() - - 4/27 - ---- -builtins/complete.def - - make sure the `command' argument to the -C option is printed with - single quotes, since multi-word commands will require them. Bug - reported by martin@snowplow.org - -execute_cmd.c - - change execute_builtin_or_function and execute_subshell_builtin_or_function - to call fflush(stdout) after the builtin or function returns, to - make sure that all output is flushed before the call returns. It - matters on cygwin. Fix suggested by Eric Blake - -redir.c - - in do_redirection_internal, if the file descriptor being acted upon - is the same one used by the stdout stream, call fflush(stdout) to - make sure all output is flushed before changing the underlying fd - out from underneath stdio. Fix suggested by Eric Blake - - - 4/30 - ---- - -builtins/common.c - - new function, sh_chkwrite(int), fflushes stdout and checks for error; - printing an error message and returning a new exit status if there's - an error on stdout. Takes exit status as argument; returns new exit - status (EXECUTION_FAILURE if write error) - -builtins/common.h - - new extern declaration for sh_chkwrite - -builtins/{alias,cd,complete,echo,fc,history,pushd,shopt,times,trap,type,ulimit,umask}.def - - change to use sh_chkwrite to report write errors - -builtins/fc.def - - if an error occurs while writing commands from the history to a file - to be executed, report a write error and return failure without - attempting to execute any commands - - 5/1 - --- -builtins/{bind,declare,set,setattr}.def - - change to use sh_chkwrite to report write errors - - 5/2 - --- -lib/readline/input.c - - fix off-by-one errors in _rl_get_char (pop_index) and rl_stuff_char - (push_index) that caused the 511th character in the buffer to be - discarded. Fixes bug reported by Tom Bjorkholm - - 5/8 - --- -subst.c - - fix parameter_brace_remove_pattern to pass getpattern() newly-allocated - memory. If word expansions (particularly brace expansions) are - required, the expansion code will free the string passed to - expand_word_internal, and we don't want to free unallocated memory - (patstr++) or have duplicate frees (patstr). Fixes bug reported on - Red Hat bugzilla - - 5/9 - --- -lib/readline/signals.c - - fix bug in rl_set_signals that caught SIGINT twice and didn't catch - SIGTERM. Bug reported by Ed Kwan - - 5/18 - ---- -jobs.c - - change compact_jobs_list to return 1 if js.j_lastj == 0 and there is - a job in jobs[0]; compact_jobs_list should never return an index - already occupied - - change reset_job_indices to avoid infinite looping when js.j_firstj - == 0 or js.j_firstj == js.j_jobslots upon function entry. Fixes - bug reported by osicka@post.cz - - 5/20 - ---- - -execute_cmd.c - - new variable, executing_builtin, keeps track of number of "levels" - of builtins being executed; incremented by execute_builtin; saved - and restored by execute_simple_command - -subst.c - - new variable, assigning_in_environment, set and unset around calls - to assign_in_env by the expansion code - -variables.c - - use executing_builtin and assigning_in_environment to decide whether - or not to look into temporary_env when calling find_variable_internal. - Fixes problem reported by Kevin Quinn - - 5/22 - ---- -redir.c - - change add_undo_redirect to differentiate between file descriptors - greater than SHELL_FD_BASE (currently 10) used internally to save - others and then being the targets of user redirection and fds that - are just the target of user redirections. The former need to have - an `exec undo' redirect added to undo it in case exec throws away - redirections; the latter does not. We use the close-on-exec flag - for this: if it's set, we assume that the file descriptor is being - used internally to save another. Fixes problem reported by Ian - Jackson - -shell.c - - new function, init_interactive_script(), does interactive initialization - for a script run with `bash -i script' -- does everything the same - as init_interactive except set `interactive == 1', which causes the - shell to read from the standard input, after calling - init_noninteractive - - call init_interactive_script if a script is run as `bash -i script'. - Fixes problem reported by Joseph Michaud - - 5/24 - ---- -builtins/printf.def - - change vbadd to only call FASTCOPY if the passed buffer length is - > 1 - - if the `-v' option is supplied and `vbuf' is already non-null from a - previous `printf -v var' call, set vbuf[0]=0 explicitly instead of - relying on vbadd to do it -- vbadd may not be called. - - fix PRETURN macro to set vbuf[0] == 0 if vbuf is not freed. These - should fix problem reported by Elmar Stellnberger - -lib/readline/display.c - - fix update_line to deal with the case where col_lendiff > 0 (meaning - the new string takes up more screen real estate than the old) but - lendiff < 0 (meaning that it takes fewer bytes to do so). This can - happen when a multibyte prompt string is replaced with a longer one - containing only single-byte characters (e.g., when doing a reverse - i-search). Fixes gentoo bug reported by Peter Volkov - - -builtins/read.def - - make sure we only print $PS2 if the standard input is a terminal - - new function, read_mbchar, to read a multibyte character so we - can make sure we read entire multibyte chars when `read -n' is - used, rather than bytes. Only called when -n is supplied. - Fixes problem reported by Stanislav Brabec - - 5/25 - ---- -externs.h - - new #defines for third argument to named_function_string: - FUNC_MULTILINE (don't suppress newlines) and FUNC_EXTERNAL (convert - to external display form) - -subst.h - - new extern declaration for remove_quoted_escapes - -subst.c - - remove_quoted_escapes is now global - -print_cmd.c - - in named_function_string, if FUNC_EXTERNAL is in the flags argument, - call remove_quoted_escapes to convert from internal to external form. - Fixes bug reported by Bo Andresen - -variables.c,builtins/{declare,setattr,type}.def - - use FUNC_MULTILINE in calls to named_function_string as appropriate - - add FUNC_EXTERNAL to calls to named_function_string as appropriate - - 5/27 - ---- -{make_cmd,variables}.c - - changes to enable the shell to compile when debugger support is - configured out (function_def hash table and access functions). Fixes - bug reported by Horst Wente - -builtins/help.def - - fix bug in `help' two-column printing to avoid referencing - shell_builtins[num_shell_builtins] - -error.c - - in get_name_for_error, use dollar_vars[0] if the name returned from - looking in $BASH_SOURCE[0] is the empty string as well as if it's - null - - 5/31 - ---- -arrayfunc.c - - change array_value_internal to set *RTYPE to 1 if the reference is - array[*] and 2 if the reference is array[@] - -subst.c - - in parameter_brace_expand_word, set the flags returned by the word - desc to include W_HASQUOTEDNULL if array_value returns QUOTED_NULL - for an array reference like x[*] and the word is quoted. Fixes bug - reported by Christophe Martin - - 6/1 - --- -jobs.c - - several changes to preserve errno if tcgetpgrp/tcgetattr/tcsetattr - fail, for subsequent error messages - - change initialize_job_control to turn off job control if the terminal - pgrp == -1 or is not equal to shell_pgrp (with an error message) - - in initialize_job_control, if the shell has been forced interactive - with -i, make sure stderr is hooked to a tty before using it as - the controlling terminal. If it's not, try to open /dev/tty and - assign it to shell_tty. Fixes problems reported by Derek Fawcus - - - 6/13 - ---- -support/shobj-conf - - changes to support shared object and shared library creation on AIX - 5.x and later versions. From Niklas Edmundsson - - 6/17 - ---- -builtins/mkbuiltins.c - - new array of builtins, posix_builtins, containing builtins listed - as special to the command search order by POSIX - - add POSIX_BUILTIN to the builtin flags if the builtin name is one - that's special to the posix command search order - -builtins.h - - new define, POSIX_BUILTIN, means that a builtin is special to the - posix command search order - - 6/22 - ---- -lib/readline/display.c - - new macro, WRAP_OFFSET, intended to replace W_OFFSET. Takes prompt - strings longer than one physical line with invisible characters on - the second line into account when calculating the number of - invisible characters on the current screen line - - use WRAP_OFFSET where appropriate (update_line, _rl_move_cursor_relative) - - change update_line to deal with adjusting _rl_last_c_pos in a - multibyte environment when the prompt has invisible chars on the - second line and redisplay has output the invisible characters - - change _rl_move_cursor_relative to adjust _rl_last_c_pos in a - multibyte environment when the prompt has invisible chars on the - second line and the redisplay draws the invisible character. Fixes - redisplay bug reported by Andreas Schwab - - - 7/11 - ---- - -lib/readline/rltty.c - - enable flush-output code for systems other than AIX 4.1. Problem - reported by Jan Kratochvil - - 7/12 - ---- -lib/readline/display.c - - set prompt_invis_chars_first_line from the portion of the prompt - following the final newline, instead of from the prefix. Fixes - bug reported on the Ubuntu bug list by dAniel hAhler - - - 7/13 - ---- -variables.c - - use native __QNX__ and __QNXNTO__ cpp defines instead of qnx and - qnx6, respectively. Patch from Sean Boudreau - -lib/sh/getcwd.c - - #undef HAVE_LSTAT on qnx, so it uses stat instead. Patch from - Sean Boudreau - - 7/21 - ---- -builtins/common.c - - change sh_invalidnum to be a little smarter about octal and hex - numbers and change the message appropriately. Bug originally - reported on coreutils list by Jürgen Niinre - - 7/26 - ---- -test.c - - make sure the string passed to test_unop has only a single character - following the `-'. Fixes bug reported by Michael A. Smith - - -parse.y - - better input validation: make sure a word looks like a conditional - unary operator (-X) before calling test_unop - - 7/28 - ---- -trap.c - - in trap_handler, if it's called directly from the signal handler - (e.g., SIGINT sighandler, set by set_sigint_handler), but the - trap disposition has been reset to the default between the - assignment and receipt of the signal, check that the signal is - trapped and issue a warning if the shell was compiled with - debugging enabled. Fixes bug reported by Fergus Henderson - - - 8/1 - --- -lib/readline/{util,histexpand}.c - - fixes for small memory leaks from Michael Snyder - - 8/18 - ---- -Makefile.in - - add dependency on builtins/builtext.h to nojobs.o list. Fixes - `make -j 5' issue reported by Chris MacGregor - -examples/loadables/Makefile.in - - add @LDFLAGS@ to SHOBJ_LDFLAGS assignment -- experimental. Suggested - by Mike Frysinger - -examples/loadables/{basename,cut,dirname,finfo,head,ln,logname,mkdir,pathchk,print,printenv,push,realpath,rmdir,sleep,tee,truefalse,tty,uname,unlink,whoami}.c - - fix up some includes. Fix from Mike Frysinger - - 8/21 - ---- -histexpand.c - - fix another memory leak in history_find_word. Bug report originally - from Michael Snyder ; test case suggested by Jim - Blandy - - 8/26 - ---- -subst.c - - change to do_assignment_internal to make an assignment to a variable - with the `noassign' internal attribute not a variable assignment - error. - - fix do_assignment_internal so assignment to a `noassign' variable - does not cause it to suddenly become visible if it's currently - invisible - - 9/3 - --- -stringlib.c - - change strsub to check whether or not temp is non-null before - trying to null-terminate it. Also make sure temp is allocated - even if the pattern and replacement strings are empty, and set - to a copy of string (like ${foo//}) - Bug report from Timo Lindfors - - 9/10 - ---- -{config.h,Makefile,configure}.in,aclocal.m4 - - new tests for fpurge and __fpurge - -lib/sh/fpurge.c, externs.h - - new file, fpurge(3) implementation with external decl in externs.h - -builtins/common.c - - add call to fpurge(stdout) to sh_chkwrite - -{redir,execute_cmd}.c - - add call to fpurge(stdout) after fflush(stdout) before changing - stdout file descriptor and after a builtin or function executes - - 9/12 - ---- -expr.c - - make sure noeval is set to 0 when a longjmp occurs, since it will - not be reset otherwise, and it can be set to 1 while processing - a {pre,post}-increment or {pre,post}-decrement token - - set noeval to 0 at the beginning of evalexp, since it's never - called recursively - - 9/14 - ---- -config-top.h - - new builder-modifiable define: DONT_REPORT_BROKEN_PIPE_WRITE_ERRORS - Turning it on will cause errors from EPIPE to not be reported by - the normal shell write error message mechanism - -builtins/common.c - - if DONT_REPORT_BROKEN_PIPE_WRITE_ERRORS is defined, don't print an - error message from sh_wrerror if errno == EPIPE. Suggestion from - Petr Sumbera - - 9/19 - ---- -{jobs,nojobs}.c,jobs.h - - add code to retry fork() after EAGAIN, with a progressively longer - sleep between attempts, up to FORKSLEEP_MAX (16) seconds. Suggested - by Martin Koeppe - - 9/21 - ---- -version.c - - change copyright year to 2007 - - 9/25 - ---- -pathexp.c - - change quote_string_for_globbing to add a backslash in front of a - backslash appearing in the pathname string, since the globbing - code will interpret backslashes as quoting characters internally. - Bug reported by on the debian list - (443685) - - 10/8 - ---- -lib/readline/display.c - - in update_line, make sure _rl_last_c_pos is > 0 before setting - cpos_adjusted (or we actually moved the cursor to column 0 in - _rl_move_cursor_relative). Fixes redisplay bug with prompt with - only invisible characters reported by dAniel hAhler - - - 10/10 - ----- -lib/readline/display.c - - in rl_redisplay, when calculating the new physical cursor position - in a multibyte locale (`tx'), do not call rl_backspace if tx ends - up < 0. Rest of fix for bug reported by dAniel hAhler - - - 10/12 - ----- -lib/sh/getcwd.c - - fix memory overwrite problem that's possible if buf is NULL and - passed size is greater than the pathname length. Reported by - Ian Campbell - -builtins/ulimit.def - - change the multiplier for the -c and -f options (`blocks') to 512, - the traditional value (and the one POSIX specifies). Bug reported - by Pete Graner - -braces.c - - pass process substitution through unchanged the same as command - substitution. Prompted by suggestion from Stephane Chazelas - - -lib/readline/input.c - - in rl_unget_char, fix off-by-one error when resetting pop_index if - it's < 0. Bug reported by Uwe Doering - -builtins/type.def - - change exit status of `type' to not successful if any of the - requested commands are not found. Reported by Stephane Chazleas - - -pcomplete.c - - change command_line_to_word_list to use rl_completer_word_break_characters - instead of the shell metacharacters to split words, so programmable - completion does the same thing readline does internally. Reported - by Vasily Tarasov - - 10/16 - ----- -bashline.c - - When completing a command name beginning with a tilde and containing - escaped specical characters, dequote the filename before prefixing - it to the matches, so the escapes are not quoted again. Reported - by neil@s-z.org - - 10/17 - ----- -expr.c - - in readtok(), don't reset lasttp if we've consumed the whitespace - at the end of the expression string. Fixes error message problem - reported by - - 11/1 - ---- -builtins/printf.def - - change asciicode() to return intmax_t; add multibyte character - support instead of assuming ASCII (depending on behavior of system - multibyte support functions). Fixes bug reported by Rich - Felker - - 11/5 - ---- -execute_cmd.c - - if redirections attached to a compound command fail, make sure to - set last_command_exit_value when returning EXECUTION_FAILURE. - Fixes bug reported separately by Andreas Schwab - and Paul Eggert - - 11/9 - ---- -builtins/read.def - - make sure the return value from get_word_from_string is freed if - non-null. Fixes memory leak bug reported by Lars Ellenberg - - - 11/10 - ----- -variables.c - - use getpid() as value of seeded_subshell to avoid problems with - random number generator not getting re-seeded correctly when - subshells are created. Fix from Tomas Janousek - -lib/readline/display.c - - in update_line(), when outputting characters at the end of the line, - e.g., when displaying the prompt string, adjust _rl_last_c_pos by - wrap_offset if the text we're drawing begins before the last - invisible character in the line. Similar to fix from 5/24. Fixes - bug reported by Miroslav Lichvar - - 11/14 - ----- -subst.c - - fix $[ expansion case to deal with extract_arithmetic_subst - returning NULL (if the `]' is missing) and return the construct - unchanged in that case. Fixes tab completion bug reported by - Heikki Hokkanen (debian bug 451263) - -lib/readline/mbutil.c - - fix _rl_find_next_mbchar_internal to deal with invalid multibyte - character sequences when finding non-zero-length chars. Fixes - bug reported by Morita Sho - - 11/15 - ----- -variables.c - - add new function `seedrand' to seed the bash random number - generator from more random data. Suggestion from Steve Grubb - - - replace the rng in brand() with a slightly better one from FreeBSD - (filtered through Mac OS X 10.5). Replacement suggested by - Steve Grubb - - 11/21 - ----- -configure.in - - darwin 9 also requires linking against libreadline.a and - libhistory.a because of Apple's questionable decision to ship a - libreadline "replacement" that doesn't provide all functions - -doc/{bash.1,bashref.texi} - - slight change to the text describing the effect of set -e when - in a || or && list - - 12/5 - ---- -jobs.c - - fix raw_job_exit_status to correct mixing of int/WAIT values (need - to return a WAIT) - - arrange so that children run as part of command substitutions also - set the SIGINT handler to wait_sigint_handler, since they effectively - don't do job control - - in wait_for, if a child run as part of a command substitution exits - due to SIGINT, resend the SIGINT to the waiting shell with kill(2). - This makes sure the exit status propagates - -doc/{bash.1,bashref.texi} - - tighten up the language describing when bash tries to see if its - stdin is a socket, so it can run the startup files. Suggested by - Vincent Lefevre - -eval.c - - in the DISCARD case of a longjmp to top_level, make sure - last_command_exit_value is set to EXECUTION_FAILURE if it's 0, - but leave existing non-zero values alone - -subst.c - - in command_substitute, don't reset pipeline_pgrp in the child - process -- this means that second and subsequent children spawned by - this comsub shell get put into the wrong process group, not the - shell's. Fix for bug reported by Ingo Molnar - - 12/6 - ---- -support/shobj-conf - - make sure the cases for darwin8.x (Mac OS X 10.4.x) are extended to - darwin9.x (Mac OS X 10.5.x). Fixes problem originally reported - against readline-5.2 by schneecrash@gmail.com - - 12/8 - ---- -subst.c - - make sure to add the results of (successful) tilde expansion as a - quoted string, to inhibit pathname expansion and word splitting. - From recent Austin Group interpretation. - -include/shtty.h, lib/sh/shtty.c - - add ttfd_onechar, ttfd_noecho, ttfd_eightbit, ttfd_nocanon, and - ttfd_cbreak to set tty attributes associated with a particular - file descriptor (which is presumed to point to a terminal). Support - for fix for bug reported by b_bashbug@thebellsplace.com - -lib/readline/display.c - - make sure we only use rl_invis_chars_first_line when the number of - physical characters exceeds the screen width, since that's the - only time expand_prompt sets it to a valid value - - 12/12 - ----- -builtins/set.def - - change set_minus_o_option to return EX_USAGE if an invalid option - name is supplied. All callers can handle it. - - change set_builtin to return what set_minus_o_option returns if it's - not EXECUTION_SUCCESS. This allows EX_USAGE errors to abort a - shell running in posix mode - - 12/14 - ----- -builtins/read.def - - generalize the calls to the tty attribute functions to maintain a - local copy of the terminal attributes and use the fd supplied as - the argument to the -u option (default 0). Fix for bug reported - by b_bashbug@thebellsplace.com - -doc/bashref.texi, lib/readline/doc/{history,rlman,rluser,rluserman}.texi - - Slight changes to conform to the latest FSF documentation standards. - Patch from Karl Berry - - 12/20 - ----- -execute_cmd.c - - after calling clear_unwind_protect_list, make sure we reset - parse_and_execute_level to 0, since there's nothing left to - restore it if top_level_cleanup tests it. Fixes bug reported - by Len Lattanzi - - 12/31 - ----- -lib/sh/getcwd.c - - new function, _path_checkino, checks whether the inode corresponding - to the path constructed from the first two arguments is the same as - the inode number passed as the third argument - - if BROKEN_DIRENT_D_INO is defined, meaning the d_ino/d_fileno - member of struct dirent doesn't contain valid values, use - _path_checkino instead of directly comparing against d_fileno. - Fixes Interix problem reported by Michael Haubenwallner - - - 1/7/2008 - -------- -array.c - - fix array_subrange to separate elements in returned string with - first char of $IFS if QUOTED is non-zero, since this indicates - the caller used ${array[@]:foo}. Fixes bug reported by Lea - Wiemann - - 1/8 - --- -subst.c - - new function returning a string containing the first character of - $IFS: char *ifs_firstchar(int *) - -subst.h - - extern declaration for ifs_firstchar() - -array.c - - call ifs_firstchar() to get first character of $IFS when needed - (array_subrange() and array_patsub()) - - 1/11 - ---- -lib/readline/display.c - - use sentinel variable set at end of init_line_structures to decide - whether to call it from rl_redisplay, since early SIGWINCH on - Mac OS X that hits during this function can cause _rl_wrapped_line - to be referenced before initialization. Fix for bug reported by - Len Lattanzi - -subst.[ch] - - skip_to_delim is now compiled into the shell all the time, not just - when readline is linked in - -subst.c - - use skip_to_delim to find the `/' denoting the end of a pattern - in pattern substitution, since it knows more shell syntax than - quoted_strchr and understands multibyte characters. Fixes bug - reported by Dmitry V Golovashkin - - 1/15 - ---- -subst.c - - add `flags' argument to skip_to_delim telling it whether or not to - set no_longjmp_on_fatal_error; set this flag when calling from the - readline completion code - -subst.h - - update extern declaration for skip_to_delim - - 1/17 - ---- -subst.c - - expand_prompt_string takes a third argument: the initial flags for - the WORD - -subst.h - - change extern declaration for expand_prompt_string to add third arg - -bashline.c - - pass W_NOCOMSUB as third argment to expand_prompt_string when - calling from bash_directory_completion_hook, since we don't want - to do command substitution from the completion code - -parse.y - - change call to expand_prompt_string - - 1/18 - ---- -doc/Makefile.in - - added an `install_builtins' rule to install the builtins.1 man page, - preprocessing it with sed to force `.so man1/bash.1', which some - versions of man require. Suggestion from Peter Breitenlohner - - - new target `install_everything' that will install normal documentation - and builtins man page - - changed uninstall target to remove bash_builtins page from man - directory - -lib/readline/vi_mode.c - - new function, rl_vi_insert_mode, which calls rl_vi_start_inserting - to make sure the value of `last command to repeat' is set correctly. - Fix from Thomas Janousek - - add support for redoing inserts made with the `I' command. Fix - from Thomas Janousek - - add support for redoing inserts made with the `A' command - -lib/readline/readline.h - - new extern declaration for rl_vi_insert_mode - -lib/readline/{misc,readline,vi_mode,vi_keymap}.c - - change calls to rl_vi_insertion_mode to rl_vi_insert_mode - - 1/19 - ---- -builtins/read.def - - change timeout behavior when not reading from a tty device to save - any partial input in the variable list, but still return failure. - This also causes variables specified as arguments to read to be - set to null when there is no input available. Fix inspired by - Brian Craft - - 1/21 - ---- -builtins/fc.def - - change computation of last_hist to use remember_on_history instead - of a hard-coded `1'. This keeps fc -l -1 in PROMPT_COMMAND from - looking too far back - - 1/25 - ---- -lib/readline/complete.c - - fix fnwidth to use string[pos] instead of *string when testing the - current character for a control character or rubout - - 2/2 - --- -general.c - - change posix_initialize to turn off source/. searching $PWD when - the file sourced is not found in $PATH. Fixes bug reported by - Paolo Bonzini and Eric Blake - - 2/9 - --- -builtins/*.def - - changes to text and formatting suggested by Jan Schampera - - - 2/16 - ---- -bashline.c - - change command_word_completion_function to use the word completion - found by readline, which matters only when ignoring case is on - and the completion found in the file system differs in case from - the text the user typed (this is what readline does for normal - filename completion). Fixes issue reported by Jian Wang - . - - 2/18 - ---- -builtins/source.def - - if the filename passed as an argument contains a `/', don't search - $PATH. Not sure why it wasn't like this before - - 2/21 - ---- -lib/readline/terminal.c - - change rl_crlf so that the MINT system on ATARI systems adds a - carriage return before the \n - - 2/22 - ---- -doc/{bash.1,bashref.texi} - - added text to the EXIT STATUS section noting that exit statuses - fall between 0 and 255, inclusive - -support/mkversion.sh - - output a #define for DEFAULT_COMPAT_LEVEL (${major}${minor}; e.g. 32) - to version.h - -version.c - - int variable, shell_compatibility_level, set to DEFAULT_COMPAT_LEVEL - by default - -builtins/shopt.def - - new shopt variable, compat31, sets shell_compatibility_level to 31 - (or back to default if unset) - -execute_cmd.c - - in execute_cond_node, restore bash-3.1 behavior of quoted rhs of - regexp matches if shell_compatibility_level == 31 - - 2/28 - ---- -lib/readline/rltty.c - - set readline_echoing_p = 1 if tcgetattr fails and sets errno to - EINVAL, as Linux does when the fd is a pipe. Reported by Mike - Frysinger - - 3/6 - --- -{MANIFEST,Makefile.in},lib/sh/{casemod,uconvert,ufuncs}.c - - new library sources from bash-4.0-devel tree - -lib/sh/spell.c - - moved cdspell() here from builtins/cd.def, renamed dirspell() - -externs.h - - new declarations for extern functions from new library files - - new extern declaration for lib/sh/spell.c:dirspell() - -builtins/cd.def - - call extern library function dirspell(); remove static cdspell() - -builtins/read.def - - when read times out, make sure input_string is null-terminated before - assigning any partial input read to the named variables - - 3/10 - ---- -lib/glob/xmbsrtowcs.c - - cut the number of memory allocations in xdupmbstowcs by not keeping - track of the indices if the caller hasn't asked for it - - 3/17 - ---- -builtins/fc.def - - make sure the adjustment to i in fc_gethnum uses the same formula - fc_builtin uses to calculate last_hist - - make sure that every time fc_gethnum is called, the fc command last - in the history list has not yet been deleted, since fc_gethnum - assumes that it has not. Fix from John Haxby - -lib/readline/complete.c - - new private library function, _rl_reset_completion_state(), used to - reset any completion state internal to the library when a signal - is received - - call _rl_reset_completion_state() before returning from - rl_complete_internal - -lib/readline/rlprivate.h - - new extern declaration for _rl_reset_completion_state - -lib/readline/signals.c - - call _rl_reset_completion_state from rl_signal_handler on SIGINT. - This fixes one of the problems identified by Mika Fischer - - -pcomplete.c - - programmable_completions now saves pointer to the compspec it's - working with in new global variable CURCS - - new function, pcomp_set_readline_variables, that sets or unsets - readline variables based on a passed flags value (COPT_FILENAMES, - etc.) - - new function, pcomp_set_compspec_options, to set or unset bits in - the options word of a passed compspec (default CURCS) - - only call bash_dequote_filename (via rl_filename_dequoting_function) - from pcomp_filename_completion_function if the readline state - word indicates word completion is in progress - -pcomplete.h - - new extern declaration for curcs - - new extern declaration for pcomp_set_readline_variables - - new extern declaration for pcomp_set_compspec_options - -bashline.c - - fix bash_dequote_filename to implement shell quoting conventions: - 1. Inhibit backslash stripping within single quotes - 2. Inhibit backslash stripping within double quotes only if - the following character is one of the special ones - - call pcomp_set_readline_variables from attempt_shell_completion - instead of doing the equivalent inline - - 3/18 - ---- -bracecomp.c - - make sure we sort array of matches in byte order (using strcmp). so - the brace calculations work correctly even when the locale orders - characters like aAbBcC...zZ. Fixes bug reported by Torsten Nahm - - - 3/20 - ---- -lib/readline/{rltty,signals}.c - - move block_sigint and release_sigint from rltty.c to signals.c; add - _rl_ prefix to make them public to the library; change callers. - From Jan Kratochvil - -lib/readline/rlprivate.h - - new extern declarations for _rl_block_sigint and _rl_release_sigint - -lib/readline/display.c - - add calls to _rl_block_sigint and _rl_release_sigint to rl_redisplay, - since it maniupluates global data structures. Fix from Jan - Kratochvil - -builtins/printf.def - - change calls to asprintf and manually adding to vbuf to use calls - to vsnprintf against vbuf directly -- if the number of characters - to be written overflows the buffer, realloc the buffer and use - vsnprintf again. This should reduce the memory used by printf. - Idea from Yuya Katayama - -lib/readline/doc/rltech.texi - - documented rest of readline's state flags, including RL_STATE_CALLBACK - - documented rl_save_state and rl_restore_state - - 3/27 - ---- -lib/readline/{rlprivate.h,{display,readline,rltty,terminal,text}.c} - - rename readline_echoing_p to _rl_echoing_p for namespace consistency - -lib/readline/{rlprivate.h,{callback,readline,util}.c} - - rename readline_top_level to _rl_top_level for namespace consistency - -builtins/ulimit.def - - new -b (socket buffer size) and -T (number of threads) options - -array.c - - fix bug in calculation of the array element assignment string length: - use length of `is' instead of `indstr'. Reported as ubuntu bug - #202885 by John McCabe-Dansted - -builtins/setattr.def - - new function, show_all_var_attributes, displays attributes and - values for all shell variables (or shell functions) in a reusable - format - -builtins/common.h - - new extern declaration for show_all_var_attributes - -builtins/declare.def - - change `declare -p' to print out all variable attributes and values, - and `declare -fp' to print out all function attributes and - definitions. Inspired by request from John Love-Jensen - - -doc/{bash.1,bashref.texi} - - document new -b and -T options to ulimit - - tighten up language describing AND and OR lists - - add description of new behavior of `declare -p' - - 3/28 - ---- -pcomplete.c - - rename curcs -> pcomp_curcs - - new global completion variable, pcomp_curcmd, the current command - name being completed - -builtins/complete.def - - new builtin, compopt, allows completion options for command names - supplied as arguments or the current completion being executed to - be modified. Suggested by Mika Fischer - - 3/30 - ---- -doc/{bash.1,bashref.texi},lib/readline/doc/rluser.texi - - document new compopt builtin - - 4/5 - --- -support/shobj-conf - - change solaris10 stanza to use -fPIC to fix 64-bit sparc_v9/solaris10 - compilations. Fix from Fabian Groffen - -builtins/read.def - - added `-i text' option, inserts `text' into line if using readline. - Suggested by many, used some ideas from Kevin Pulo - -doc/{bash.1,bashref.texi} - - document new `-i text' option to read builtin - - 4/7 - --- -lib/readline/bind.c - - new settable variable, `history-size', sets the max number of - entries in the history list - -doc/bash.1,lib/readline/doc/{rluser.texi,readline.3} - - document new `history-size' settable readline variable - - 4/8 - --- -builtins/complete.def - - change build_actions calling sequence to take a struct with `other' - (non-action) flag arguments (-p, -r) - - add support for `-E' option to build_actions and complete builtin -- - modifies or displays (internal) `_EmptycmD_' completion spec - -bashline.c - - change attempt_shell_completion to try programmable completion on an - `empty' command line and return the results - -doc/bash.1,lib/readline/doc/rluser.texi - - documented new `-E' option to `complete' - - 4/9 - --- -bashhist.c - - new variable, `enable_history_list', used to reflect setting of - `-o history' option - - change bash_history_{enable,disable,reinit} to set enable_history_list - as well as remember_on_history - -builtins/set.def - - use `enable_history_list' instead of `remember_on_history' to keep - value of `-o history' option - -builtins/evalstring.c - - instead of unwind-protecting remember_on_history, use a function to - restore it to the value of `enable_history_list' after - parse_and_execute runs the commands in the string. This allows - history to be turned off in a startup file, for instance. Problem - reported by Dan Jacobson - - 4/11 - ---- -bashline.c - - limited support for completing command words with globbing characters - (only a single match completed on TAB, absolute or relative - pathnames supported, no $PATH searching, some support for displaying - possible matches, can be used with menu completion). - Suggested by Harald Koenig - -print_cmd.c - - change redirection printing to output r_err_and_out as `&>file', - since the man page says that's the preferred form - - 4/12 - ---- -builtins/*.def - - change long doc so the first line is a short description - - add `Exit Status:' section to each longdoc describing exit values - -builtins/help.def - - new `-d' option to print short description of each utility - - new `-m' option to print description of each builtin in a - pseudo-manpage format (inspired by ksh93) - -doc/{bash.1,bashref.texi} - - document new `-d' and `-m' options to `help' - -builtins/mapfile.def - - new builtin, `mapfile', imported from bash-4.0-devel branch - -tests/{mapfile.{data,right,tests},run-mapfile} - - tests for `mapfile' builtin - -doc/{bash.1,bashref.texi} - - added description of `mapfile' builtin - -MANIFEST,Makefile.in,builtins/Makefile.in - - added entries for mapfile source files - -arrayfunc.[ch] - - new function, bind_array_element, to support mapfile builtin - - 4/20 - ---- -expr.c - - fix operator precendence in expcond(): term after the `:' is - a conditional-expression, not a logical-OR-expression (using C - terminology). Bug reported by - - 4/22 - ---- -bashintl.h - - new P_ define for using ngettext to decide on plural forms - (currently unused) - - 4/25 - ---- -execute_cmd.c - - in execute_disk_command, if the command is not found, search for - a shell function named `command_not_found_handle' and call it - with the words in the command as arguments. Inspired by Debian - feature. - -doc/{bash.1,bashref.texi} - - document new command_not_found_handle behavior in COMMAND EXECUTION - section - -configure.in - - change default version to bash-4.0-devel - - 4/28 - ---- -variables.c - - change push_func_var and push_exported_var to call - stupidly_hack_special_variables if the temporary variable is going - to be disposed. This undoes any internal changes caused by a local - variable assignment in the environment or in a shell function. Bug - reported by Morita Sho in - http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=478096 - - 5/3 - --- -builtins/fc.def - - fixed a problem caused by change of 1/21 to use remember_on_history, - since it's turned off by parse_and_execute(), but can cause the - last command in history to be deleted and leave last_hist pointing - beyond the end of the history list. edit_and_execute_command can - do this. - -bashline.c - - new define, RL_BOOLEAN_VAR_VALUE, to take a readline boolean variable - and get its value as 0 or 1 (consider making readline global) - - put tty back into canonical mode before calling parse_and_execute in - edit_and_execute_command and then back into raw mode after it - returns. Fixes problem identified by . - - 5/4 - --- -lib/glob/glob.c - - code to support `globstar' option: GX_GLOBSTAR and two internal - flags. Changes to skipname, glob_vector, mbskipname, glob_filename. - New function finddirs(). - -lib/glob/glob.h - - new defines to support globstar code - -builtins/shopt.def - - new shell option, `globstar', enables special handling of `**' in - glob patterns -- matches all directories recursively - -pathexp.h - - extern declaration for glob_star - -pathexp.c - - break inline code out of quote_globbing_chars into a separate - function to decide whether a character is a globbing char: - glob_char_p - - change shell_glob_filename to call glob_filename with the - GX_GLOBSTAR flag if glob_star is set - -doc/{bash.1,bashref.texi} - - document new `globstar' shell option - -arrayfunc.c - - new function, broken out of quote_array_assignment_chars: - quote_assign; extended from old code to make sure that globbing - chars and chars in $IFS are quoted when displaying assignment - statements, especially in compound array assignments - - 5/5 - --- -bashline.c - - new variable, dircomplete_spelling, controls spelling correction - of directory names when doing filename completion - - change bash_directory_completion_hook to incorporate spelling - correction if initial canonicalization of directory name fails - -builtins/shopt.def - - new shell option, `dirspell', enables and disables spelling - correction of directory names during word completion - -builtins/read.def - - support for fractional timeout values (ival.uval); uses uconvert - and falarm/setitimer - -config.h.in - - new `HAVE_SETITIMER' define - -configure.in - - look for setitimer(2), define HAVE_SETITIMER if found - -doc/{bash.1,bashref.texi} - - document new `dirspell' shopt option - - document new fractional values to `read -t timeout' - - 5/6 - --- -assoc.[ch] - - new files, basic support for associative array implementation - -general.h - - new extern declarations for sh_openpipe, sh_closepipe, trim_pathname - -general.c - - new functions: sh_openpipe to create a pipe and move the file - descriptors to a high range; sh_closepipe, to close pipe fds and - clean up, and trim_pathname, to replace portions of a pathname - with `...' (for prompting) - -jobs.c - - don't set last_asynchronous_pid in child shell (messes up $!, among - other things) - -parse.y,parser.h - - moved definitions of parser flags to parser.h - -array.c - - imported array_modcase (case-changing operations on arrays) from - 4.0-devel branch - -array.h - - new extern declaration for array_modcase - -lib/readline/complete.c - - new variable, rl_menu_completion_entry_function, generator for - rl_menu_complete - - new menu completion `browsing' implementation, with several - improvements over the old code. Inspired by Sami Pietila - - -lib/readline/readline.h - - extern declaration for rl_menu_completion_entry_function - - 5/8 - --- -lib/readline/complete.c - - add support for a third argument to fnprint and print_filename, - which supports replacing a specified portion of the pathnames - printed when displaying possible completions with a `...' (or - `___', if the prefix would be confused with a portion of the - filename) - - new variable, _rl_completion_prefix_display_length, sets the - number of characters in a common prefix to be replaced with an - ellipsis when displaying possible completions - - add support to _rl_display_match_list to find the length of the - common prefix of all items being displayed, and passing that - value to print_filename for possible replacement with an ellipsis - if that length is longer than _rl_completion_prefix_display_length - -lib/readline/bind.c - - add support for retrieving value of history-size variable to - _rl_get_string_variable_value - - new bindable variable, completion-prefix-display-length. When - displaying possible completions, matches with a common prefix - longer than this value have the common prefix replaced with an - ellipsis - - support for retrieving value of completion-prefix-display-length - variable to _rl_get_string_variable_value - - new bindable variable, revert-all-at-newline: if enabled, causes - all changes in history lines to be undone before readline returns - after processing a newline - -doc/bash.1,lib/readline/doc/{readline.3,rluser.texi} - - document new `completion-prefix-display-length' variable - - document new `revert-all-at-newline' variable - -execute_cmd.c - - change execute_builtin to not inherit the `-e' flag into commands - executed by the `command' or `source/.' builtins if we are supposed - to be ignoring the return value. This is like `eval'. Fixes bug - reported by Hiroshi Fujishima - - 5/10 - ---- -variables.c - - when reading the initial environment, don't create variables with - names that are not valid shell identifiers. Fixes bug reported by - Stephane Chazleas - - 5/13 - ---- -subst.c - - fix string_quote_removal to gracefully handle the case where a - backslash is the final character in the string (leaves the backslash - in place). Fixes bug reported by Ian Robertson - - - 5/16 - ---- -support/checkbashisms - - Perl script that purports to check for bash-specific features in a - shell script. Lifted from Debian via ubuntu - - 5/20 - ---- -lib/readline/display.c - - in update_line, when deciding whether or not to adjust _rl_last_c_pos - in a multibyte environment after printing the last line of a multiline - prompt with invisible characters on the first and last lines, use - the number of inivisible chars on the first line in the calculation - deciding whether or not we're past the last invisible character and - need to adjust the cursor position. Old code used the number of - invisible chars on the last prompt line. Fixes bug reported by - stuff@slinkp.com. - - in update_line, when fixing _rl_last_c_pos after drawing the first - line of the prompt, use the number of invisible chars on the first - line as the offset, instead of the total number of invisible chars - - use prompt_multibyte_characters, the number of multibyte chars in - the prompt string, to short-circuit some relatively expensive - multibyte text processing in rl_redisplay - - 5/21 - ---- -variables.c - - new function, reinit_special_variables(), a hook for special - vars that need their hook functions called when they're unset as - a result of the shell reinitializing itself to run a script - -shell.c - - shell_reinitialize now calls reinit_special_variables - - shell_reinitialize now calls bashline_reset - -variables.h - - new extern declaration for reinit_special_variables - -bashline.c - - new function, bashline_reset(), called when the shell reinitializes - in shell_reinitialize. Right now, just resets - bash_readline_initialized to 0. - -bashline.h - - new extern declaration for bashline_reset() - - 5/23 - ---- -bashhist.c - - new function, bash_clear_history, clears the history and resets any - associated internal bash state - -bashhist.h - - extern declaration for bash_clear_history - -builtins/history.def - - call bash_clear_history instead of clear_history for `history -c'. - Fixes part of problem reported by Scott McDermott - - - decrement history_lines_this_session in delete_histent, called for - `history -d' - -builtins/history.def,bashhist.[ch] - - move delete_histent() to bashhist.c; rename to bash_delete_histent - - move delete_last_history() to bashhist.c; rename to - bash_delete_last_history() - - 5/25 - ---- -braces.c - - add another parameter to mkseq(), the number of digits to put into - each member of a numeric sequence (width), changes to determine - any zero-padding go into expand_seqterm - - changes to expand_seqterm to allow user-specified increments - -bashline.[ch],shell.c,sig.c - - switched names of bashline_reinitialize and bashline_reset to better - reflect their functions - - when searching $PATH for directories to use for command completion, - make sure to free `current_path' before going out of scope - - new bindable function `dabbrev-expand', which is more or less - menu completion using dynamic history completion as the generator - - changes to bash_execute_unix_command to set variables for the - executed command like programmable completion: READLINE_LINE - (rl_line_buffer) and READLINE_POINT (rl_point) - - change to bash_execute_unix_command to allow the executed command - to change the readline line buffer by modifying the value of - READLINE_LINE and to change rl_point by modifying the value of - READLINE_POINT - -common.h - - new SEVAL_ defines for later parse_string changes from 4.0-devel - branch - -command.h - - new defines for new &>> r_append_err_and_out redirection - -builtins/evalstring.c - - new function, parse_string, parses a command from a passed string - and returns the number of characters consumed. For satisfying - Posix rules when parsing command substitutions, from bash-4.0-devel - branch - - split out common prolog code from parse_string and - parse_and_execute into a separate function called from both - -parse.y - - small changes to add symbols needed for parse_string - - parser change to add `|&' as synonym for `2>&1 |'; translation is - performed at parse time so |& never shows up in output of - print_command, for instance. Picked up from zsh, merged in from - bash-4.0-devel branch - -parse.y,{redir,copy_cmd,dispose_cmd,make_cmd,print_cmd}.c - - implement new &>> r_append_err_and_out (like >>foo 2>&1); merged - in from bash-4.0-devel branch - -doc/{bash.1,bashref.texi},lib/readline/doc/rluser.texi - - document new optional increment in brace expansion - - document new zero-padded fixed-width integer brace expansion - - document new `dabbrev-expand' bindable readline command - - document new effects of `bind -x' setting and reading the values of - READLINE_LINE and READLINE_POINT - - document new |& synonym for `2>&1 |' pipeline operator - - 5/26 - ---- -parse.y - recognize new ;& and ;;& case action list terminator tokens and - implement them in the grammar, setting CASEPAT_FALLTHROUGH and - CASEPAT_TESTNEXT flags as appropriate - -print_cmd.c - - print new ;& and ;;& case clause action list terminators as - appropriate - -execute_cmd.c - - implement new case clause action list terminators: - ;& - fall through to actions associated with next pattern list - ;;& - fall through to tests in next pattern list - -doc/{bash.1,bashref.texi} - - document new ;& and ;;& case clause action list terminators - - 5/28 - ---- -jobs.c - - change waitchld so it treats SIGCHLD like SIGINT if `wait' is being - executed, and allows wait to jump out before running any trap set - on SIGCHLD. Fixes debian bug #483016 reported by Miroslav Rudisin - - - run_sigchld_trap is no longer static, so the trap code in trap.c - can call it - - change run_sigchld_trap to call set_impossible_sigchld_trap instead - of just using a call to restore_default_signal - -jobs.h - - new extern declaration for run_sigchld_trap - -trap.c - - fix run_pending_traps to run a SIGCHLD trap if the trap handler isn't - set to IMPOSSIBLE_TRAP_HANDLER - - in trap_handler, don't reset the SIGCHLD trap handler to trap_handler - if MUST_REINSTALL_SIGHANDLERS is defined - - new function, set_impossible_sigchld_handler, sets the trap string - associated with SIGCHLD to IMPOSSIBLE_TRAP_HANDLER; used as a sentinel - by run_sigchld_trap and maybe_set_sigchld_handler - - change maybe_set_sigchld_handler to set the SIGCHLD trap string only - if the current value is IMPOSSIBLE_TRAP_HANDLER. This ensures that - any traps on SIGCHLD set in a SIGCHLD handler will persist. Fixes - debian bug #483016 reported by Miroslav Rudisin - - -trap.h - - new extern declaration for set_impossible_sigchld_trap - - 5/31 - ---- -parse.y - - new function: parse_comsub(), parses $(...) by parsing command - between parens and making sure the next token is `)'. From - the bash-4.0-devel branch - - new function: xparse_dolparen, helper function for parsing - command substitutions in $(...). Called from subst.c to extract - a command substitution during word expansion. From bash-4.0-devel - branch - - new function: rewind_input_stream(). Rewinds bash_input.location.string - back to where it was before the shell parsed a $() command - substitution. From bash-4.0-devel branch - - changes to parse_matched_pair to combine most of the flag variables - (was_dollar, in_comment, and so on) into a local flags word - - 6/2 - --- -parse.y - - call trim_pathname, which retains only the last $PROMPT_DIRTRIM - directories and replaces the intervening characters with `...', - when expanding \w and \W - -doc/{bash.1,bashref.texi} - - document the effect of setting PROMPT_DIRTRIM - - 6/3 - --- -builtins/ulimit.def - - make the multiplier (block size) for -c and -f 512 bytes only if in - Posix mode and 1024 bytes otherwise (as in previous versions). Uses - POSIXBLK and BLOCK_SIZE defines to parameterize size based on value - of posixly_correct - -doc/bashref.texi - - document this addition to posix mode - -builtins/common.c - - change get_numeric_arg to have a calling sequence and return value - more closely mimicking general.c:legal_number(), with the addition - of a flags word - - add extra value for `fatal' argument to get_numeric_arg to force it - to return failure to the caller rather than longjmping - -builtins/common.h - - change prototype declaration for get_numeric_arg - -builtins/{break,shift}.def - - change calls to get_numeric_arg to deal with new semantics and calling - sequence - -builtins/history.def - - display_history now returns an int - - change calling sequence for get_numeric_arg in display_history - - display_history now returns failure to the caller if get_numeric_arg - detects an invalid number, rather than jumping back to the top level - - use value returned by display_history as return status of history - builtin, filtered through sh_chkwrite - - history no longer aborts compound commands on invalid arguments. - fixes problem reported by Chu Li - -{braces,subst}.c - - extract_command_subst now takes a third flags argument; passed flags - are ORd into flags passed to other functions; changed callers - -subst.h - - move SX_* defines here from subst.c so parse.y:xparse_dolparen can - see them and behave appropriately - - extract_command_subst now takes a third flags argument; change - prototype - -subst.c - - change extract_command_subst to call xparse_dolparen when extracting - a $() construct - - change calls to extract_delimited_string to extract_command_subst - as appropriate - - if command_substitute returns a NULL word desc, don't call - dispose_word_desc on it - -parse.y - - change xparse_dolparen to use the SX_* flags now in subst.h - - 6/16 - ---- -subst.c - - in quote_list, set W_HASQUOTEDNULL flag in the word if quote_string - turns "" into CTLNUL - - in dequote_list, turn off W_HASQUOTEDNULL flag in the word if - dequote_string turns CTLNUL into "" - - new function, string_list_pos_params, encapsulates everything - needed to turn the positional parameters or an array indexed with - '@' or '*' into a string, including taking care of quoting and - using the first char of $IFS, when used in another expansion like - pattern removal or pattern substitution - - change list_remove_pattern, pos_params, pos_params_pat_subst to - call string_list_pos_params. Fixes problems reported by - Stephane Chazelas - - 6/22 - ---- -variables.h - - include assoc.h for associative arrays - - defines for case-modifying expansions and associative array variables - - sh_var_assign_func_t functions now take an extra char * parameter - - 6/25 - ---- -variables.c - - change declarations and definitions of sh_var_assign_func_t functions - to add the extra char * parameter: null_assign, null_array_assign, - assign_seconds, assign_random, assign_lineno, assign_subshell, - assign_dirstack - - change calls to var->assign_func to add extra char * argument - - broke part of body of dispose_variable out into a new function, - dispose_variable_value, which knows how to free all kinds of shell - variable data - - changes to deal with variables with the internal `nofree' attribute - -arrayfunc.c - - change calls to var->assign_func to add extra char * argument - - bind_array_var_internal now takes an extra `char *key' argument - - additions for associative array implementation; from bash-4.0-devel - tree - -arrayfunc.[ch],subst.c - - expand_compound_array_assignment now takes the variable as the first - argument (SHELL_VAR *); changed function definition and callers - -builtins/set.def - - changes to handle associative arrays in `unset' - -{execute_cmd,command}.h - - definitions for coproc implementation; from bash-4.0-devel tree - -variables.c - - new functions for associative arrays: make_new_assoc_variable, - make_local_assoc_variable - - 6/26 - ---- -variables.c - - more infrastructure for associative arrays; from bash-4.0-devel tree - - infrastructure for handling assignments to variables with - case-modifying attributes; from bash-4.0-devel tree - -config.h.in - - add #defines controlling case-modifying variable attributes and word - expansions - -configure.in - - add enable options for case-modifying variable attributes and word - expansions (--enable-casemod-attributes and --enable-casemod-expansions, - respectively); from bash-4.0-devel tree - -execute_cmd.c - - add code to fix_assignment_words to handle assignment statements to - "assignment builtins" that seem to be associative arrays. Imperfect - -subst.c - - array_remove_pattern now takes a SHELL_VAR * as its first argument - instead of an ARRAY *; from the bash-4.0-devel tree - - changes to array_length_reference for associative arrays; from the - bash-4.0-devel tree - - changes to get_var_and_type for associative arrays; from the - bash-4.0-devel tree - - changes to parameter_brace_substring for associative arrays; from the - bash-4.0-devel tree - - changes to param_expand for associative arrays; from the - bash-4.0-devel tree - -builtins/declare.def - - changes for associative arrays: new `-A' option, changes to make - local and global associative array variables; from the bash-4.0-devel - tree - - 6/27 - ---- -execute_cmd.c - - in execute_command_internal, when short-circuiting execution - because `breaking' or `continuing' is non-zero, preserve the exit - status by returning `last_command_exit_value' instead of an - unconditional EXECUTION_SUCCESS. Fixes bug reported by Roman - Rakus - - 6/28 - ---- -variables.c - - fix get_var_and_type to appropriately handle references like - ${varname[0]}, where `varname' is a scalar variable - -make_cmd.[ch],parse.y - - make_here_document now takes a second argument: the current line - number; changed caller (gather_here_documents) - -builtins/setattr.def - - added support for associative arrays and the `-A' variable attribute - option; from the bash-4.0-devel tree - -subst.c - - change code that transforms `declare -A xxx=(yyy)' to perform the - internal `declare -A xxx' before doing the variable assignment, - because associative arrays have to be declared before being assigned - to as such; uses new function make_internal_declare - - 6/30 - ---- -subst.[ch] - - dequote_escapes is now external; add declaration in subst.h - - remove_quoted_nulls is now external; add declaration in subst.h - -array.[ch] - - new functions for completeness: array_dequote, array_dequote_escapes, - array_remove_quoted_nulls - - array_subrange now calls array_remove_quoted_nulls for "${array[*]}". - Fixes bug reported by Vitor De Araujo - - array_patsub now calls array_remove_quoted_nulls for "${array[*]}" - - array_modcase now calls array_remove_quoted_nulls for "${array[*]}" - - array_patsub now handles the mflags&MATCH_QUOTED case appropriately - (that implies "${array[@]}") - -subst.c - - new functions for case-modifying word expansion suppport: - pos_params_casemod, parameter_brace_casemod; from bash-4.0-devel branch - -assoc.c - - new functions for completeness: assoc_remove_quoted_nulls - - assoc_patsub now calls assoc_remove_quoted_nulls for "${assoc[*]}" - - assoc_modcase now calls assoc_remove_quoted_nulls for "${array[*]}" - - assoc_patsub now handles the mflags&MATCH_QUOTED case appropriately - (that implies "${assoc[@]}") - - 7/1 - --- -assoc.[ch] - - new function, assoc_subrange: takes a hash table, converts it to a - word list, and performs the subrange and indexing on that list - - new functions for completeness: assoc_dequote, assoc_dequote_escapes - -subst.c - - verify_substring_values now takes the variable SHELL_VAR * as its - new first argument; changed callers - - change verify_substring_values to handle associative arrays using the - number of elements as the upper bound - - brought in code to do case-modifying word expansions from - bash-4.0-devel branch, conditional on CASEMOD_EXPANSIONS - -input.c - - if the read(2) in getc_with_restart returns -1/EAGAIN, turn off - non-blocking mode on the file descriptor and try again. Fixes - problem reported by Glynn Clements - - 7/2 - --- -doc/{bash.1,bashref.texi} - - documented new case-modifying word expansions - -make_cmd.c - - change make_here_document to display a warning message including the - start line of a here document if it ends up delimited by EOF. - Addresses issue raised by Richard Neill - -subst.c - - in do_assignment_internal, make sure the `invisible' attribute is - unset before returning success - - 7/3 - --- -config-top.h - - add `CASEMOD_CAPCASE' define to include or exclude the ~[~] word - expansion and the `capcase' variable attribute (declare -c) - -builtins/declare.def - - add support for manipulating the case-modifying attributes (new - declare -clu); from bash-4.0-devel branch - -builtins/setattr.def - - add support for reporting case-modifying attributes (-clu attributes); - from bash-4.0-devel branch - -doc/{bash.1,bashref.texi} - - specify that the read builtin timing out results in a return value - greater than 128 - - document new `-l' and `-u' options to declare/typeset/local. Leave - `-c' undocumented for now - - 7/4 - --- -make_cmd.[ch] - - make_coproc_command: construct a coproc; from bash-4.0-devel tree - -dispose_cmd.c - - dispose coproc command; from bash-4.0-devel tree - -copy_cmd.c - - copy a coproc command; from bash-4.0-devel tree - -print_cmd.c - - print a coproc command; from bash-4.0-devel tree - -shell.c - - dispoe the current coproc on shell exit; from bash-4.0-devel tree - -redir.c - - when closing redirects as part of user redirections, check whether - or not active coprocess fds are being closed and close the coproc - if so; from bash-4.0-devel tree - -config.h.in - - add define for COPROCESS_SUPPORT to include coprocesses - -configure.in - - add support for configuring coprocesses into and out of the build - -jobs.c - - in waitchld, check whether or not a coproc processs has exited; - from the bash-4.0-devel tree - - 7/5 - --- -doc/bashref.texi - - document new --enable-coprocesses option that includes coprocess - support - -execute_cmd.c - - add functions for coprocess support, including execute_coproc and - code to call it when command->type == cm_coproc; from - bash-4.0-devel tree - -lib/sh/fdprintf.c - - new library function fdprintf(int fd, const char *format, ...); - printf to a file descriptor - -{configure,config.h}.in - - support for detecting fdprintf and compiling in replacement - -Makefile.in,lib/sh/Makefile.in - - add rules to include fdprintf.o - -doc/{bash.1,bashref.texi} - - documented coprocesses and `coproc' reserved word - - 7/7 - --- -subst.c - - fix array_length_reference to use MB_STRLEN instead of STRLEN, so - multibyte characters in array values are computed correctly. Fixes - bug reported by Wang Xin - - 7/10 - ---- -jobs.c - - new function, maybe_give_terminal_to (old, new, flags), sets the - terminal pgrp to NEW if and only if it's currently set to OLD - - call maybe_give_terminal_to when the parent sets the terminal pgrp - to the pipeline pgrp in stop_pipeline, so we don't give the - terminal to the new job's pgrp unless it's currently owned by the - shell. Fixes race condition described by Joe Peterson - , where parent bash may change tty pgrp after a - grandchild (interactive bash child of su) has changed it to - something else. The call to maybe_give_terminal_to makes explicit - a previously-implicit assumption - -aclocal.m4 - - remove dependency on writable /tmp by creating directories in - build directory - -shell.c - - make changes to how bash sets no_line_editing and running_under_emacs - to deal with various emacs terminal emulators; use better check - for `eterm', since bash sends $PWD to eterm with control sequences - that confuse other programs. Problem reported by Micah Cowan - - - - 7/12 - ---- -print_cmd.c - - break code that prints here-documents into two functions: - print_heredoc_header, which prints the operator and delimiter, and - print_heredoc_body, which prints the body text and closing delimiter - - change print_redirection to call print_heredoc_{header,body} - - sentinel variable, printing_connection, used when printing a command - of type `connection' (|, &&, ||, etc.) - - change print_redirection_list to save any here documents it finds - while printing a connection and save them in `deferred_heredocs' - - new function, print_deferred_heredocs, called from print_redirection - in the cm_connection case, calls print_heredoc_header for all the - here documents, then prints the operator (|, &&, ||, etc.), then - the here-document body. This preserves syntactic correctness; the - old code printed the control operator after the body of the here - document. Fixes bug reported by - - 7/16 - ---- -locale.c - - in set_locale_var, print a warning message if setlocale() fails any - time it's called -- required some code restructuring - - 7/19 - ---- -support/shobj-conf - - support for mingw32, contributed by Carlo Bramix - - - 7/23 - ---- -execute_cmd.c - - added support (currently unused) to manage a list of coprocs - - 7/25 - ---- -bashline.c - - add extern declarations for literal_history and force_append_history - -builtins/shopt.def - - include "bashhist.h" instead of having extern declarations for the - appropriate history variables - -parser.h - - new parser_state value: PST_HEREDOC, set when reading body of here- - document in parse.y:read_secondary_line - -parse.y - - set PST_HEREDOC bit in parser_state when reading a secondary line - for the body of a here-document - - change read_secondary_line to save lines in the body of a here- - document in the shell history list if remember_on_history is - set. Fixes bug reported by Gene Golub - - 8/4 - --- -configure.in - - changed to 4.0-alpha - -lib/readline/readline.h - - changed constants to reflect readline-6.0 version - - 8/11 - ---- -lib/readline/signals.c - - make sure we don't use SIGWINCH without checking whether or not it's - defined. Fix from Pedro Alves - - 8/12 - ---- - -COPYING - - updated to GPLv3; edits in every file with a copyright or license - declaration to update to gpl3 - -version.c - - update extended version info to latest gnu standard - - 8/17 - ---- -subst.c - - change exp_jump_to_top_level to only call top_level_cleanup if - parse_and_execute_level is 0. If it's not, the longjmp to - parse_and_execute will run the unwind-protect stack. Fixes bug - most recently reported by Roman Rakus - - 8/18 - ---- -support/config.{guess,sub} - - updated to newer versions from autoconf-2.62 distribution - - 8/20 - ---- -subst.c - - fixed parameter_brace_substring to differentiate between indexed and - associative arrays when computing second offset, instead of - assuming indexed array - - 8/21 - ---- -support/xcase.c - - simple program to convert input from lower to uppercase and vice - versa. Now used by coproc test suite, since `tr -u' is not - portable. - - 8/22 - ---- -doc/bash.1 - - fixed description of the bindable edit-and-execute commands to note - they check $VISUAL first, instead of $FCEDIT. Fixed bug reported - by - -[bash-4.0-alpha frozen] - - 8/28 - ---- -[bash-4.0-alpha released] - - 9/1 - --- -builtins/evalstring.c - - fixed typo in parse_string (ostring used uninitialized). Bug - reported by Andreas Schwab - -subst.c - - fix return value of parameter_brace_expand to set the - W_HASQUOTEDNULL flag in the returned WORD_DESC * if the return value - from parameter_brace_remove_pattern is a quoted null string. Fixes - bug reported by Andreas Schwab - - set the W_HASQUOTEDNULL flag in the return value from - parameter_brace_expand if the return value from parameter_brace_patsub - is a quoted null string - - 9/6 - --- -builtins/read.def - - change read -t 0 to return success if there is input available to be - read -- allows scripts to poll for input. Uses input_avail libsh - function - - 9/9 - --- -externs.h - - fix extern fpurge declaration -- use HAVE_DECL_FPURGE instead of - NEED_FPURGE_DECL, since the former is set by `configure' - -jobs.h - - add extern declaration for close_pgrp_pipe - - add a new job state JNONE (-1) to the enum - -jobs.c - - include execute_cmd.h for extern declarations for coproc functions - -subst.c - - include builtins/builtext.h for extern declarations for functions - implementing builtins (e.g., declare_builtin) - -arrayfunc.c - - include "pathexp.h" for extern declaration for glob_char_p - -braces.c - - add extern declaration for `asprintf' - -lib/readline/rlprivate.h - - add extern declarations for _rl_trace, _rl_tropen - -lib/sh/zgetline.c - - add extern declarations for zread, zreadc - -lib/sh/mktime.c - - include "bashansi.h" for string function declarations - -builtins/common.h - - add extern declaration for parse_string - -trap.c - - include jobs.h for extern declaration for run_sigchld_trap - -general.c - - fix call to strtoimax in legal_number; if ep == string when function - returns, the number was not converted, even if errno is not set. - Fix from Paul Jarc - - 9/11 - ---- -[prayers for the victims of 9/11/2001] - -builtins/return.def - - call no_options, as Posix requires. This also has the effect of - disallowing negative return values unless they're prefixed by `--' - - 9/13 - ---- -builtins/bind.def - - add an error message when bind is used without line editing active, - instead of just returning an error status - -variables.c - - make sure make_local_variable never creates visible variables with - a value, whether or not a variable with the same name existed in a - previous context. This is consistent with ksh93. Fix from - - - 9/16 - ---- -execute_cmd.c - - add call to CHECK_TERMSIG in shell_execve after the call to execve - returns. Recommended by Roman Rakus - - add QUIT check in execute_connection after executing first command - in a `&' connection - - 9/22 - ---- -execute_cmd.c - - new semaphore variable, executing_list, incremented every time a - list (command1;command2 or command1 || command2 or command1 && - command2) is executed; used as sentinel for rest of shell - -sig.c,builtins/evalstring.c - - set executing_list to 0 when throwing execution back to top level; - make sure to unwind-protect it in appropriate places - -jobs.c - - if a pipeline is killed by SIGINT while executing a list (when - executing_list is non-zero), make sure the shell acts as if an - interrupt occurred. The behavior is dependent on the shell - compatibility level being > 32 (bash-4.0 and above) - - 9/23 - ---- -redir.c - - don't bother reporting an error with a file descriptor, even if - the errno is EBADF, if the redirection error (e.g., NOCLOBBER) - can't have anything to do with the fd. Fixes bug reported by - "David A. Harding" , debian bug #499633. - - 9/24 - ---- -builtins/declare.def - - make `declare [option] var' (and the `typeset' equivalent) create - invisible variables, instead of assigning the null string to a - visible variable. Fixes bug reported by Bernd Eggink - - 9/25 - ---- -builtins/common.[ch] - - new function, builtin_warning(), like builtin_error but for warning - messages - -builtins/bind.def - - experimental: print a warning, but go on, if line editing not active - when bind is invoked. Suggested by Rocky Bernstein - - - 10/3 - ---- -test.c - - use same_file instead of directly comparing st_dev and st_ino when - comparing files in filecomp(). From mingw32 patches submitted - by Hector Chu - - 10/4 - ---- - -redir.c - - in redirection_error(), use `error' instead of errno when comparing - against EBADF. From mingw32 patches submitted by Hector Chu - - -shell.c - - in unset_bash_input(), reset bash_input.type to st_none after - closing the default buffered fd. From mingw32 patches submitted - by Hector Chu - -builtins/cd.def - - ignore CDPATH when in privileged mode. Suggested by Paul Jarc - - -variables.c - - change sv_globignore to only act if privileged mode is not enabled. - Suggested by Paul Jarc - -doc/bash.1,bashref.texi - - document new treatment of CDPATH and GLOBIGNORE when privileged - mode is enabled - -builtins/read.def - - change prompt printing to occur after terminal is set to no-echo - mode. Based on suggestion from Stephane Chazelas - - -lib/readline/signals.c - - new variables to keep track of special characters corresponding to - SIGINT, SIGQUIT, and SIGTSTP - - new variable to keep track of whether tty is echoing control - characters corresponding to SIGINT, SIGQUIT, and SIGTSTP - - new function, _rl_echo_signal_char(int sig) to display the tty - special char generating SIGINT, SIGQUIT, or SIGTSTP. Based on - idea and code from Joe Peterson - - call rl_echo_signal_char in rl_signal_handler: if the terminal - settings indicate it, readline will echo characters that generate - keyboard signals - -lib/readline/rltty.c - - set _rl_intr_char, _rl_quit_char, and _rl_susp_char to special - characters that generate signals from keyboard - - set _rl_echoctl if ECHOCTL tty flag is set - -lib/readline/rlprivate.h - - extern declarations for _rl_intr_char, _rl_quit_char, and - _rl_susp_char - - extern declaration for _rl_echoctl - -lib/readline/readline.h - - extern declaration for rl_echo_signal_char() - -lib/readline/doc/rltech.texi - - document rl_echo_signal_handler(): available for applications - that install their own signal handlers - - 10/5 - ---- -execute_cmd.c - - fix errexit logic to not cause the shell to exit when a command in - a pipeline fails. Fixes bug reported by Marcin Owsiany - - - 10/14 - ----- -builtins/evalstring.c - - don't short-circuit execution in parse_and_execute if we want to - run an exit trap. Fixes bug reported by Steffen Kiess - - - 10/18 - ----- -parse.y - - fix error production to only call YYACCEPT if the shell is currently - interactive and not in parse_and_execute (so parser errors in - things like eval will correctly set $?). Fixes bug reported by - marco-oweber@gmx.de - -execute_cmd.c - - make sure variable name errors in execute_for_command and non- - identifier function names in execute_intern_function set the - return status to EX_BADUSAGE (2), not EX_USAGE (258) - -parser.h - - new parser state, PST_REPARSE - -parse.y - - turn PST_REPARSE on in parse_string_to_word_list - - in parse_matched_pair, if parsing a single-quoted string and - PST_REPARSE is set, don't requote CTLESC or CTLNUL. Fixes bug with - compound array assignment using $'\x7f' reported by Antonio Macchi - - - 10/23 - ----- -configure.in - - define LOCAL_LDFLAGS as `-z interpose' on Solaris 8, 9, and 10 to - allow the bash malloc to interpose the libc malloc when called by - library functions pre-bound to the libc malloc. Suggested by - Serge Dussud - - 10/26 - ----- -doc/bash.1 - - add single-sentence descriptions to rest of parameter expansions. - Suggested by Ken Irving - - 10/27 - ----- -subst.c - - rearrange code in skip_to_delims to allow quote characters and other - shell expansion characters to be delimiters - - add new flags value for inverting search: skip to the next character - NOT in the set of delimiters passed as an argument - -subst.h - - define for new SD_INVERT flag value for skip_to_delims - - 10/28 - ----- -bashline.c - - new bindable functions: shell-forward-word and shell-backward-word. - Like forward-word and backward-word, but understand shell quoting - and use shell metacharacters and whitespace as delimiters. - Suggested by Andre Majorel - - new bindable functions: shell-kill-word and shell-backward-kill-word. - Like kill-word and backward-kill-word, but understand shell quoting - and use shell metacharacters and whitespace as delimiters. - Suggested by Andre Majorel - -doc/bash.1,lib/readline/doc/rluser.texi - - documented shell-forward-word and shell-backward-word - - documented shell-kill-word and shell-backward-kill-word - - 11/1 - ---- -redir.c - - add extra argument to add_undo_redirect: fdbase. FD used to save - a file descriptor must be > fdbase if fdbase >= SHELL_FD_BASE. A - value of -1 for fdbase means to just use SHELL_FD_BASE. Fixes bug - with 0<&10 reported by Clark Jian Wang - - 11/5 - ---- -unwind_prot.c - - new function: have_unwind_protects(); returns 1 if unwind_protect_list - is not empty - -unwind_prot.h - - extern declaration for have_unwind_protects - -builtins/evalstring.c - - in parse_and_execute_cleanup, make sure that we don't call - run_unwind_frame and expect it to decrement parse_and_execute_level - if there's no unwind_protect_list, since there's a while loop in - throw_to_top_level that calls parse_and_execute_cleanup as long as - parse_and_execute_level is non-zero - - 11/9 - ---- -variables.c - - fix the assign function for COMP_WORDBREAKS to allocate new memory - to store as the variable's value, to avoid freeing memory twice - if the variable is unset after rl_completer_word_break_characters - is freed and reallocated. Fix from Mike Stroyan - - 11/20 - ----- -general.c - - new 'file_exists(fn)' primitive; just calls stat(2) - -general.h - - new extern declaration for file_exists - -bashline.c - - add `~' to rl_filename_quote_characters so make_quoted_replacement - will call bash_quote_filename for words containing `~'. Then - bash_quote_filename can make choices based on that - - change quote_word_break_chars to backslash-quote the tilde in a - filename with a leading tilde that exists in the current directory, - since we want to inhibit tilde expansion in this case - -execute_cmd.c - - call file_isdir from shell_execve instead of stat(2) directly - -bashhist.c - - use file_exists and file_isdir primitives instead of calling stat - - 11/21 - ----- -redir.c - - When undoing saving of non-standard file descriptors (>=3) using - file descriptors >= SHELL_FD_BASE, we set the saving fd to be - close-on-exec and use a flag (RX_SAVCLEXEC) to decide how to set - close-on-exec when the fd is restored. Set flag in add_undo_redirect, - check in do_redirection_internal. Fixes problem reported by Andreas - Schwab - - 11/26 - ----- -subst.c - - fix param_expand to have expansions of $@ and $* exit the shell if - there are no positional parameters and `set -u' is enabled. Fixes - bug reported by Dan Jacobson - - 11/27 - ----- -lib/readline/display.c - - fix update_line to not call space_to_eol if current cursor position - (_rl_last_c_pos) indicates that we're already at end of line. - Partial fix for bug reported by Mike Frysinger - - in update_line, don't call insert_some_chars if that will start - before the last invisible character in the prompt string and not - draw the entire prompt string. More of the partial fix for bug - reported by Mike Frysinger - - fix update_line to adjust _rl_last_c_pos by wrap_offset when adding - characters beginning before the last invisible character in the - prompt. New code is same as previously existed in a different code - path. Rest of fix for bug from Mike Frysinger - - fix assignment of newline breaks (inv_lbreaks) to correctly account - for prompts longer than two screen lines containing invisible - characters. The assumption is that part of the invisible characters - are on the first line (prompt_invis_chars_first_line) and the - remainder are on the last (wrap_offset - prompt_invis_chars_first_line). - Fix is in rl_redisplay. part of fix for bug reported by - "Wesley J. Landaker" in - http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=265182 - [TENTATIVE] - - fix _rl_move_cursor_relative to correctly offset `dpos' by `woff' - when there are invisible characters on lines after the second by - using (_rl_screenwidth*_rl_last_v_pos) when seeing whether or not - we just wrote some invisible characters. Rest of fix for bug - reported in http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=265182 - [TENTATIVE] - - 12/11 - ----- -sig.c - - reset the execution context before running the exit trap in - termsig_handler - -general.c - - set and unset terminate_immediately like interrupt_immediately in - bash_tilde_expand - -builtins/read.def - - change terminate_immediately to a counter instead of a flag, as - interrupt_immediately is used - -lib/readline/display.c - - slight change to fix from 11/27 to deal with prompts longer than a - screen line where the invisible characters all appear after the - line wrap. Fixes bug reported by Andreas Schwab - -builtins/{echo,printf}.def - - increment terminate_immediately at entry; decrement before returning. - Fix for bug reported by Ralf.Wildenhues@gmx.de - - 12/16 - ----- -subst.c - - fix off-by-one error in /dev/fd version of add_fifo_list; make - sure we add to totfds when it is == fd, not just when fd > totfds. - Fixes bug reported by marciso@gmail.com - -[bash-4.0-beta2 frozen] - - 12/29 - ----- -doc/{bash.1,bashref.texi} - - document more clearly that when not in Posix mode, command - substitution does not inherit the -e option. From bug report from - Freddy Vulto - -{execute_cmd,sig,builtins/evalstring}.c - - sentinel variable to keep track of whether or not we're supposed to - ignore the failure status of a command executed in a command - substitution even if the `-e' option is set: comsub_ignore_return - - increment and decrement comsub_ignore_return in execute_simple_command - before calling expand_words - - in parse_and_execute, if comsub_ignore_return is non-zero and the - SUBSHELL_COMSUB bit is set in subshell_environment, enable the - CMD_IGNORE_RETURN flag in every command executed from the passed - string. Fixes problem reported by Freddy Vulto - - make sure to reset comsub_ignore_return every time we throw to the - top level, like executing_list flag - - 1/2/2009 - -------- -parse.y - - fix to rewind_input_stream to handle case of $(...) command - substitution followed by a quoted literal newline. Report and fix - from Andreas Schwab - - 1/7 - --- - -subst.c - - fix match_wpattern and match_upattern to prefix a `*' to the - pattern even if it starts with a `*(' (if extglob is enabled) - before checking whether or not it can match anywhere in the - string. Fixes bug reported by os@sernet.de. - -[bash-4.0-rc1 frozen] - - 1/9 - --- -locale.c - - since setlocale() doesn't set errno to anything meaningful, - don't include the strerror() result in the error message if - it fails - - make sure the error messages printed when setlocale fails are - localizable - - 1/11 - ---- -lib/readline/histexpand.c - - make sure that every time history_no_expand_chars is tested, we - also call the history_inhibit_expansion_function if it's set. - Fixes bug reported by Yang Zhang - - 1/12 - ---- -trap.c - - make sure to call parse_and_execute with the SEVAL_RESETLINE bit - set in the flags so it will reset the line number when running - the trap commands. Partial fix for bug reported by - peter360@fastmail.us - - 1/14 - ---- -builtins/reserved.def - - document `coproc' so it can be used with `help' builtin. Pointed - out by Pierre Gaston - -lib/sh/casemod.c - - added two new flags: CASE_UPFIRST and CASE_LOWFIRST to casemod - the first character of the passed string and pass the rest - through unchanged. Fixes bug reported by Jan Schampera - - -externs.h - - new defines for CASE_UPFIRST and CASE_LOWFIRST - -subst.c - - use CASE_UPFIRST for ^ and CASE_LOWFIRST for , casemod operators - -builtins/mapfile.def - - call zreset() before calling first zgetline(), to clean out any - remaining data in local buffer used by zreadc. Fixes bug - reported by Pierre Gaston - - 1/15 - ---- -lib/sh/zread.c - - renamed zreadintr to zreadretry -- not perfect, but better - - new functions: zreadintr, which just calls read so it can be - interruptible, and zreadcintr, which is like zreadc but uses - zreadintr to fill the buffer - -lib/sh/zgetline.c - - in zgetline, when zread/zreadc return <= 0, make sure line is - non-null before assigning to line[nr] - -builtins/mapfile.def - - return an error right away if the supplied array variable name - refers to a readonly or noassign array - - set interrupt_immediately so calls to zgetline can be - interrupted. Fixes bug reported by Pierre Gaston - - - if interactive, pass the SEVAL_INTERACT and SEVAL_NOHIST flags - to parse_and_execute when calling callbacks. Fixes bug reported - by Pierre Gaston - - add `readarray' as a synonym for mapfile - -doc/{bash.1,bashref.texi} - - document behavior of mapfile builtin adding index of array element - to be assigned as additional argument to callback string. Reported - by Pierre Gaston - - document readarray as synonym for mapfile - -builtins/common.c - - new error function, sh_ttyerror(set), prints an error message having - to do with setting or getting terminal attributes - -builtins/read.def - - print error message if read fails to set terminal attributes - - 1/16 - ---- -execute_cmd.c - - new function, coproc_reap, calls coproc_dispose if sh_coproc is - marked as COPROC_DEAD - - new function, cpl_reap, disposes coprocs marked as COPROC_DEAD - from coproc list - - change coproc_pidchk to just mark the coproc as dead instead of - calling coproc_dispose, so we don't call unsafe functions from - a signal handler. Fixes bug reported by Andreas Schwab - - -execute_cmd.h - - new extern declaration for coproc_reap - -command.h - - new flags for c_flags member of a struct coproc - -{jobs,nojobs}.c - - add call to coproc_reap in cleanup_dead_jobs, which will do the - right queueing or blocking of SIGCHLD - -trap.c - - modify change from 1/12 to not reset the line number when running - the DEBUG and RETURN traps - - 1/18 - ---- -lib/sh/casemod.c - - change default operations to work on entire passed string instead - of breaking into words at non-alpha-numerics. Use new - CASE_USEWORDS flag to enable by-word behavior. Fixes bug reported - by Jan Schampera - -builtins/printf.def - - in vbprintf, bracket each call to vsnprintf (which uses the args - passed to vbprintf) with SH_VA_START and va_end, so we can - reninitialize the argument list for each call. This is actually - what the C standard requires. Fixes bug that caused printf -b - to `ignore' first % format specifier if it came first in the - string. Reported by David Leverton - -builtins/mapfile.def - - start the line count at 1, since it doesn't get incremented before - (or after) reading the first line, so things like - `mapfile -n 5 -c 1 -C 'echo foo' array < file' work right and call - the callback after the first line is read. Fixes bug reported by - Pierre Gaston - - 1/22 - ---- -lib/readline/complete.c - - set _rl_interrupt_immediately non-zero before reading from the file - system or calling an application-defined completion function - -lib/readline/signals.c - - renamed rl_signal_handler to _rl_handle_signal; new version of - rl_signal_handler that just calls _rl_handle_signal (for now) - - new function _rl_signal_handler that calls _rl_handle_signal without - any checking - -lib/readline/rlprivate.h - - new extern declaration for _rl_signal_handler - - new define, RL_CHECK_SIGNALS, checks whether or not _rl_caught_signal - is set and calls _rl_signal_handler if so - -lib/readline/{bind,input,readline}.c - - add RL_CHECK_SIGNALS in appropriate places - -lib/readline/signals.c - - change rl_signal_handler to set a flag and return rather than - run through the entire signal handling process. If - _rl_interrupt_immediately is set, call the signal handling code - right away instead of setting the flag. Initial fix for crash - bug reported by Roman Rakus - -aclocal.m4 - - new macro, BASH_TYPE_SIG_ATOMIC_T, tests for sig_atomic_t in - , defines as int if not defined - -configure.in - - call BASH_TYPE_SIG_ATOMIC_T - - call AC_C_VOLATILE - -config.h.in - - empty define for sig_atomic_t - - empty define for volatile - - 1/27 - ---- -subst.c - - audit calls to add_character and change to add_ifs_character (which - quotes characters in $IFS). Affects primarily `:', `=', and `~'. - Fixes bug reported by Jan Schampera ; fix - suggested by Stephane Chazelas - - 2/1 - --- -configure.in - - call AC_C_RESTRICT - -config.h.in - - add empty defintion for `restrict' - -pcomplete.c - - use unwind_protects around call to execute_shell_function in - gen_shell_function_matches to prevent data corruption if - throw_to_top_level is called. Bug report and fix from - werner@suse.de. - -execute_cmd.c - - don't clamp CPU usage at 100% in print_formatted_time. Bug reported - by Linda Walsh - - 2/5 - --- -locale.c - - in set_locale_var, set errno to 0 before calling setlocale(), and - print strerror (errno) if setlocale fails and errno ends up non-zero - - 2/6 - --- -configure.in - - backed out of solaris change from 10/23/2008 (adding `-z interpose' - to LDFLAGS) due to solaris updates to fix a linker problem. - Updatted by Serge Dussud - - 2/12 - ---- -execute_cmd.c - - change execute_connection so failure of a pipeline will cause the - shell to exit if -e is on. From discussion on austin-group - mailing list - - change execute_command_internal so failure of a user-specified - subshell will cause the shell to exit if -e is on. From discussion - on austin-group mailing list - - 2/13 - ---- -doc/{bash.1,bashref.texi} - - clarified description of set -e option to accurately reflect current - implementation - - 2/19 - ---- -print_cmd.c - - fix print_deferred_heredocs to not print a space if the separator - string is null - - change print_deferred_heredocs to set `was_heredoc' after printing - something - - change connection printing code to only print the `;' separator - if we haven't just printed a here-document - - change connection printing code to print any deferred here - documents after the rhs of the connection. Fixes bug reported by - Bo Andresen - -[bash-4.0 frozen] - - 2/20 - ---- - -[bash-4.0 released] - - 2/22 - ---- - -parse.y - - fix parse_comsub to not test a character for being a possible shell - metacharacter if LEX_PASSNEXT flag is set. Fixes bug reported by - Mike Frysinger - -pcomplete.c - - add call to save_parser_state (accidentally dropped from patch) to - gen_shell_function_matches. Fixes bug with bash_completion and - file/directory completion reported by phil@Arcturus.universe - -Makefile.in - - fix assignment to LDFLAGS_FOR_BUILD to match those in subdir - Makefiles. Fixes bug reported by Mike Frysinger - -builtins/mapfile.def - - make sure the callback quantum (-c option argument) is > 0. Fixes - bug reported by Stephane Chazleas - - 2/23 - ---- -parse.y - - fix save_token_state and restore_token_state to save and restore - current_token. Fixes bug reported by Bernd Eggink - - -builtins/exit.def - - check jobs[i] before checking whether or not it's running when - the checkjobs option is set and we're looking for running jobs - at exit. Fixes bug reported by Mike Frysinger - - 2/24 - ---- -siglist.c - - include bashintl.h for definition of _. Fixes bug reported by - Greg Wooledge - - 2/25 - ---- -subst.c - - new function, skip_matched_pair. Similar to skip_to_delim and - the extract_XXX family - - move skipsubscript here from arrayfunc.c; re-implement in terms of - skip_matched_pair. Fixes bugs reported by - -arrayfunc.c - - remove skipsubscript; moved to subst.c - -parse.y - - change reset_parser to set current_token to '\n'. Rest of fix for - bug reported by Bernd Eggink ; earlier fix on - 2/23 - - 2/26 - ---- -builtins/declare.def - - when given something like array[x]=y (which sets making_array_special - to 1), don't convert an associative array to an indexed array (line - 493). Part of fix for bug reported by Pierre Gaston - - - if offset == 0, indicating that we do not have a valid assignment, - make sure any `name' containing a `[' is a valid array reference - before trying to go on. Not doing this leads to creating crazy - variables like `name[foo[bar]=bax'. Rest of fix for bug reported - by Pierre Gaston - -assoc.c - - change assoc_to_assign to single-quote the array keys if `quoted' is - non-zero. Makes things easier to read with weird characters in the - key - -parse.y - - fix parse_comsub to not set LEX_HEREDELIM when it sees "<<<". Fixes - bug reported by Mike Frysinger - - 2/27 - ---- -parse.y - - fix report_syntax_error to set last_command_exit_value to - EX_BADUSAGE (2) instead of EX_USAGE (258), since there's nothing - that will translate that to something < 128 before reading the - next command. Partial fix for bug reported by Mike Frysinger - - -sig.c - - fix sigint_sighandler to set last_command_exit_value to sig+128 - before calling throw_to_top_level. Rest of fix for bug reported - by Mike Frysinger - -jobs.c - - if fork() fails, set last_command_exit_value to 126 before calling - throw_to_top_level - -execute_cmd.c - - defer calling unlink_fifo_list in parent branch of - execute_disk_command if we're executing in a shell function - - change execute_function to call unlink_fifo_list before returning - if it's the top-level function - - 3/2 - --- -builtins/read.def - - if read times out, make sure we remove the top element from the - unwind-protect stack (the free of input_string) and run the rest, - to reset the tty and readline and alarm states. Then we jump to - assigning the variables to any partial input. Fixes bug reported - by Christopher F. A. Johnson - - 3/3 - --- -parse.y - - break comment checking code into a common COMMENT_BEGIN define so - we can use it in multiple places in parse_comsub - - in parse_comsub, don't alter the LEX_RESWDOK flag if we read a - `#' and we're checking comments, even though `#' isn't a `shell break' - character. Fixes bug reported by Mike Frysinger - -braces.c - - in expand_seqterm, decrease the total length of the rhs by the length - of any (optional) increment, so we don't end up with unwanted zero - padding because the rhs length is wrong. Fixes bug reported by - Carl Albing - - 3/4 - --- -doc/{bash.1,bashref.texi} - - changes to clean up some of the language describing the effects of - terminal process groups on the ability to read from and write to - the terminal - - 3/5 - --- -support/shobj-conf - - add host_vendor to string tested in switch to handle things like - gentoo/freebsd - - beginning with version 7, FreeBSD no longer has /usr/bin/objformat - or a.out binaries and libraries. It's always ELF. Fix from - Timothy Redaelli - -parse.y - - in parse_comsub, allow comments if we are ready to read a - reserved word (tflags & LEX_RESWDOK), haven't read anything from - one yet (lex_rwlen == 0) and the current character is a '#' - - 3/6 - --- -parse.y - - new lex flag for parse_comsub: LEX_INWORD. Turn it off when - we see a shell break character; turn it on or keep it on when - not a break character. Keep track of word length (reset to 0 - when we turn on LEX_INWORD when it was off). - - don't use COMMENT_BEGIN in parse_comsub any more; test - whether or not LEX_INWORD is set and lex_wlen == 0 in addition - to tests for LEX_RESWDOK and lex_rwlen. Comments are valid - when at the start of a word - - move LEX_PASSNEXT code to the top of parse_comsub, so the rest - of the function doesn't have to check for the flag at different - places - - 3/7 - --- -parse.y - - in parse_comsub, when looking for a reserved word (LEX_RESWDOK - non-zero), and in a case statement, we can see either an esac - or a pattern list. We handle an esac separately. We should - turn off LEX_RESWDOK if we see anything but a newline, since - we'll be reading a pattern list. Other part of fix for bug - reported by Mike Frysinger (rest of fix - on 3/3) - - 3/10 - ---- -{.,lib/readline}/doc/fdl.texi - - updated to FDL version 1.3 - - 3/11 - ---- -parse.y - - when using the |& construct with a simple command preceding it, add - the implicit redirection to the simple command's redirection list, - since the redirections associated with the command struct are never - executed. Fixes bug reported by Matt Zyzik - - 3/14 - ---- -execute_cmd.c - - in execute_case_command, if ;& is used with no following pattern - list, make sure we don't reference a NULL pointer. Bug report and - fix from Clark Jian Wang - -parse.y - - make parser_state global, so other files can use it - - command_word_acceptable now returns non-zero if PST_REDIRLIST bit - set in parser_state, so we accept assignment statements and - perform alias expansion. Fix for bug reported by Vincent - Lefevre (2/24/2009) - -parser.h - - add PST_REDIRLIST flag, notes that parser is currently parsing a - redirection list preceding a simple command - -make_cmd.c - - make_simple_command now turns on PST_REDIRLIST in parser_state when - creating a new simple command - - make_simple_command turns off PST_REDIRLIST in parser_state if it - adds a non-redirection to the command it's building - - clean_simple_command turns off PST_REDIRLIST to make sure it's off - -subst.c - - new flag for param_expand: PF_IGNUNBOUND, means to not exit if the - variable is unbound even if `set -u' is enabled - - change param_expand to not call err_unboundvar if the `pflags' - argument has the PF_IGNUNBOUND bit set - - parameter_brace_expand_word now takes an extra `pflags' argument to - pass down to param_expand; changed callers - - changed call to parameter_brace_expand_word in parameter_brace_expand - to add PF_IGNUNBOUND flag so ${@:-foo} doesn't cause the shell to - exit (but ${@} does) when there are no positional parameters. Fixes - Debian bug 519165 from Dan Jacobson - -parse.y - - add code to parse_comsub to allow here-documents within command - substitutions to be delimited by the closing right paren, with the - usual warning about here documents delimited by EOF on execution. - Fixes regression from bash-3.2 noted in Red Hat bugzilla 485664 by - Ralf Corsepius - - 3/15 - ---- -subst.c - - string_list_dollar_at now checks for Q_PATQUOTE, which getpattern() - uses to denote Q_DOUBLE_QUOTES (?). Fixes a=abcd echo "${a#$*}" - when IFS= and args are `a b' as noted by Stephane Chazleas - - - param_expand now checks for Q_PATQUOTE and treats it identically - to Q_DOUBLE_QUOTES when expanding $* - - expand_word_unsplit now sets W_NOSPLIT in the flags of the word it - passes to expand_word_internal if $IFS is NULL - - expand_word_leave_quoted now sets expand_no_split_dollar_star and - the W_NOSPLIT bit in the word flags before calling - expand_word_internal if $IFS is NULL, just like expand_word_unsplit. - It is now virtually identical to expand_word_unsplit. Rest of fix for - problems reported by Stephane Chazleas - - 3/20 - ---- -trap.c - - in _run_trap_internal, don't pass SEVAL_RESETLINE as flag to - parse_and_execute if running the ERR trap (further modification - of change from 1/12) - -execute_cmd.c - - in execute_simple_command, set line_number to line_number_for_err_trap - before calling run_error_trap. Part of fix for bug reported by - Brian J. Murrell - - change other places calling run_error_trap() to set and use - line_number_for_err_trap - - 3/21 - ---- -builtins/fc.def - - Even though command substitution through parse_and_execute turns - off remember_on_history, command substitution in a shell when - set -o history has been enabled (interactive or not) should use it - in the last_hist calculation as if it were on. Same calculation - in fc_gethnum and fc_builtin. Fixes bug reported by - Ian Kelling - -sig.c - - change termsig_sighandler to terminate immediately if it gets called - twice with the same signal before termsig_handler gets called. This - fixes the `looping on SIGSEGV' phenomenon reported by Linux users. - -parse.y - - in read_secondary_line, don't try to add NULL lines to the history - list. Report and patch from Lubomir Rintel - - 3/22 - ---- -sig.c - - Augment change from 3/21 with explicit check for signals we *don't* - want this to happen for. Patch from Lubomir Rintel - - 3/28 - ---- -array.c - - in array_reference, return NULL immediately if the desired index - is larger than the maximum - - add cache of last array referenced and last array element referenced; - use in array_reference to optimize case of sequential access; - invalidated where necessary in other functions - - array_rshift needs to set max_index to 0 if the array was empty - before shifting in the new element 0 - - array_shift needs to use element_index(a->head->prev) to set the - max_index, not a simple decrement, to deal with sparse arrays - - 4/1 - --- -bashline.c - - in bash_dequote_filename, return right away after copying the - backslash if the last character in the string to be expanded - is a backslash. The old code copied an extra NUL and overwrote - the bounds checking. Fixes bug reported by Shawn Starr - https://bugzilla.redhat.com/show_bug.cgi?id=488649 - - 4/3 - --- -subst.c - - in pat_subst.c, make sure to copy one character from the input - string in the case of a null pattern match, since we substitute - on the null match and then increment past the current character. - Not doing this means that each character of the original string - is replaced because of the null matches. Fixes debian bug - reported bhy Louis-David Mitterrand - http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=522160 - -lib/sh/winsize.c - - incorporate contents of readline/rlwinsize.h to get all the various - system dependencies right when trying to find TIOCGWINSZ. Fixes - bug reported by Dan Price - - 4/6 - --- -doc/{bash.1,bashref.texi} - - fix description of conditional `>' and `<' to remove statement that - the comparison pays attention to the current locale -- it has - always used strcmp - -lib/glob/glob.c - - fixed a bug in glob_filename that caused glob_dir_to_array to be - called to prepend a (globbed) directory name onto the results from - glob_vector, which, if we were globbing `**', glob_vector has - already done. Effect is to have the directory name(s) on there - twice. Fixes "dir*/**" bug reported by Matt Zyzik - - - 4/8 - --- -doc/{bash.1,bashref.texi} - - fix short syntax summary of for command to reflect full bash - syntax (which is a superset of Posix syntax). Fixes bug reported - by Reuben Thomas - - 4/10 - ---- -{expr,subst}.c - - make sure last_command_exit_value is set to EXECUTION_FAILURE - before calling err_unboundvar, in case set -e is enabled and - the shell exits from there. Fixes bug reported by Freddy - Vulto and Piotr Zielinski - - - 4/11 - ---- -jobs.c - - in restore_pipeline, don't call discard_pipeline with a NULL - argument - -trap.c - - in run_debug_trap, make sure to save and restore the pipeline, - pipeline_pgrp, and state of the pipeline around running the debug - trap, then remove any job created by running the debug trap from - the jobs table when it completes. Fixes for two bugs reported - by lex@upc.ua - - 4/12 - ---- -lib/readline/signals.c - - new functions to block and release SIGWINCH like the SIGINT blocking - and releasing functions - -lib/readline/rlprivate.h - - new extern declarations for _rl_block_sigwinch and _rl_release_sigwinch - -lib/readline/display.c - - block SIGWINCH during redisplay like SIGINT. Should fix bug reported - by Nicolai Lissner - - 4/13 - ---- -lib/readline/readline.h - - new readline state variable: RL_STATE_REDISPLAYING - -lib/readline/display.c - - in rl_redisplay, don't block SIGWINCH during redisplay; just set - the REDISPLAYING state - -lib/readline/terminal.c - - in rl_resize_terminal, don't call rl_redisplay_after_sigwinch() if - we're already in the middle of redisplay (RL_STATE_REDISPLAYING). - Fix for bug reported by Nicolai Lissner - - 4/15 - ---- -parse.y - - fix parse_comsub to add check for \n when seeing whether the current - character can change to a state where a reserved word is legal, - since it is not a shell meta character. Fixes bug reported by - Bernd Eggink . - - 4/17 - ---- -jobs.c - - new functions to save and restore the pgrp_pipe (since there's only - one): save_pgrp_pipe and restore_pgrp_pipe - -trap.c - - run_debug_trap now saves and restores the pgrp_pipe before and - after calling the debug trap - - run_debug_trap now makes sure the terminal is owned by the pipeline - pgrp after the debug trap runs. Rest of fix for bug reported by - Oleksly Melnyk (lex@upc.ca) - - 4/19 - ---- -include/posixselect.h - - new include file, encapsulates select(2) includes and defines for - bash and readline. Inspired by patch from Mike Frysinger - - -lib/sh/input_avail.c - - include "posixselect.h" - -lib/readline/{input,parens}.c - - include "posixselect.h" instead of using inline includes - - use new USEC_TO_TIMEVAL define to make sure that values for timeouts - greater than one second are handled properly - -lib/sh/fpurge.c - - updated implementation, taken from gnulib - - 4/21 - ---- -lib/glob/glob.c - - in finddirs, don't try to free a return value of glob_error_return - from glob_vector. Bug and fix from werner@suse.de - -lib/readline/signals.c - - in rl_echo_signal_char, check that SIGQUIT and SIGTSTP are defined - before trying to use them. Bug report and fix from Volker Grabsch - - - 4/24 - ---- -aclocal.m4 - - add conditional inclusion of to BASH_CHECK_TYPE - -bashtypes.h,lib/sh/strto[iu]max.c - - include if present for any existing declaration of - intmax_t and uintmax_t. Fixes Interix problem reported by - Markus Duft - -lib/sh/strindex.c,externs.h,builtins/common.h - - renamed strindex to strcasestr to agree with other implementations - (e.g., BSD, MacOS X, gnulib); changed callers - -lib/sh/{strindex.c,Makefile.in},Makefile.in - - renamed strindex.c to strcasestr.c - -configure.in - - add strcasestr to call to AC_REPLACE_FUNCS, take advantage of - existing libc implementations - -config.h.in - - add define for HAVE_STRCASESTR - -lib/sh/mbscmp.c - - fix mbscmp to return correct values when the strings do not contain - valid multibyte characters. Ideas from gnulib - -xstrchr.c - - only compare current character against C if mblength == 1 - -{shell,variables}.c - - changed some xstrchr calls back to strchr when the arguments cannot - contain multibyte characters - -lib/sh/{xstrchr.c,Makefile.in},Makefile.in - - renamed xstrchr to mbschr; renamed file to mbschr.c - -aclocal.m4 - - change BASH_CHECK_MULTIBYTE to use AC_REPLACE_FUNCS(mbschr) - -externs.h - - extern declarations for mbscmp and mbschr, conditional on the usual - HAVE_MBSCMP and HAVE_MBSCHR defines - -general.h,{alias,arrayfunc,bashline,general,execute_cmd,subst}.c - - changed calls to xstrchr to mbschr - -doc/bash.1 - - use `pathname expansion' consistently, not `filename expansion' or - `filename generation' - -doc/bashref.texi - - use the phrase `filename expansion' consistently (since this is - what the Gnu people prefer) instead of `pathname expansion' or - `filename generation' - -aclocal.m4,config.h.in - - check for mbscasecmp in BASH_CHECK_MULTIBYTE, define HAVE_MBSCASECMP - if found - -lib/sh/{mbscasecmp.c,Makefile.in} - - new file, case-insensitive multibyte string comparison - -externs.h - - extern declaration for mbscasecmp - - 4/25 - ---- -lib/readline/display.c - - in _rl_move_cursor_relative, don't adjust dpos by woff if it's - already less than woff (don't want it less than 0) - - in _rl_move_cursor_relative, short-circuit right away if the cursor - is at columns 0 and `new' is 0 (doesn't matter if it's a multibyte - locale or not, or whether there are invisible chars in the prompt) - - in _rl_move_cursor_relative, go ahead and adjust dpos if - prompt_physical_chars >= _rl_screenwidth (previous check was just > ) - Fixes bug reported by Andreas Schwab - - 4/28 - ---- -lib/glob/glob.c - - in glob_vector, don't add an empty pathname ("") if we're adding the - currect directory to the dirlist and GX_NULLDIR is set -- we can just - ignore it, since the passed directory name (".") was created by - the caller. Fixes bug reported by Matt Zyzik - - 5/5 - --- -subst.c - - make expansion of $@ and $* when set -u is in effect and there are - no positional parameters be a non-fatal error. This is the - consensus of the austin group, though it is not historical practice. - Message from Geoff Clare <20090505091501.GA10097@squonk.masqnet> of - 5 May 2009 and http://austingroupbugs.net/view.php?id=155 - - - 5/20 - ---- -lib/glob/glob.c - - tentative fix to glob_filename to compensate for glob_vector putting - null pathname at front of result vector when dflags&GX_NULLDIR. - Current fix manually removes empty string element from front of - result vector; a better fix would be to use a flag so glob_vector - doesn't add it at all. Augments patch from 4/28, which appears to - have broken some things. Fixes bug reported by Matt Zyzik - - - 5/22 - ---- - -lib/glob/glob.c - - better fix for glob_filename; supersedes patch of 5/20. Now the - code does not set GX_ADDCURDIR if directory_len == 0 and the - function has not been called recursively ((flags & GX_ALLDIRS) == 0). - Better fix for bug reported by Matt Zyzik - -Makefile.in - - fix build race condition that occurs in some makes caused by - libreadline.a and libhistory.a containing some of the same files - (e.g., xmalloc.o) and conflicting when trying to build both at - the same time. Reported by Mike Frysinger - - 5/25 - ---- -lib/readline/vi_mode.c - - fix _rl_vi_initialize_line so that the loop counter is not - unsigned (it doesn't matter, but it eliminates a compiler warning). - Bug reported by Dave Caroline - - 5/26 - ---- -doc/{bash.1,bashref.texi} - - add text to the description of array variables making it clear - that an array variable is not considered set until a subscript - has been assigned a value - - 5/29 - ---- -lib/readline/text.c - - fix rl_change_case to handle case where mbrtowc doesn't find a - valid multibyte character - -lib/readline/vi_mode.c - - fix _rl_vi_change_mbchar_case to handle case where mbrtowc doesn't - find a valid multibyte character - -lib/sh/casemod.c - - fix sh_modcase to handle case where mbrtowc doesn't find a valid - multibyte character - -lib/readline/mbutil.c - - fix _rl_find_next_mbchar_internal to not call mbrtowc at the end of - the string, since implementations return different values -- just - break the loop immediately - -lib/readline/display.c - - fix rl_redisplay to make same sort of cursor position adjustments - based on multibyte locale and _rl_last_c_pos when performing - horizontal scrolling rather than line wrapping. Probably still - more to do. Fixes bug reported by jim@jim.sh - - 6/5 - --- -doc/{bash.1,bashref.texi} - - added some more explanation of the inheritance of the ERR trap at - the suggestion of Thomas Pospisek - -findcmd.c - - use eaccess(2) if available in file_status to take other file - access mechanisms such as ACLs into account. Patch supplied - by werner@suse.de - - 6/12 - ---- -xmalloc.c - - also calculate lowest brk() value the first time xmalloc/xrealloc - (and their sh_ counterparts) are called - - error messages consolidated into a single function (allocerr/ - sh_allocerr) to avoid string duplication - - 6/16 - ---- -variables.c - - changes to allow variables.c to be compiled if ALIAS is not defined. - Bug and fix from John Gatewood Ham - -lib/sh/getcwd.c - - fix so systems defining BROKEN_DIRENT_D_INO have the necessary - defines. Fix from Jay Krell - -configure.in - - add -D_ALL_SOURCE to interix CFLAGS for struct timezone definition. - Bug and fix from John Gatewood Ham - - 6/29 - ---- -variables.c - - change initialize_shell_variables to add environment variables with - invalid names to the variables hash table, but marking them as - invisible and imported - - new function, export_environment_candidate. Used when creating the - export environment for commands to include variables with invalid - names inherited from the initial environment. Apparently this - behavior is widespread - - change make_var_export_array to use export_environment_candidate - rather than visible_and_exported to test variables for inclusion - in the export environment - - 7/1 - --- -builtins/read.def - - fix a memory leak where the number of fields is not the same as - the number of variables passed to `read'. Bug report from - werner@suse.de - -builtins/command.def - - move section of code that sets PATH from -p option before the - verbose-handling section, so command -v and command -V honor - the PATH set by command -p. Bug report and fix from - ohki@gssm.otsuka.tsukuba.ac.jp - - 7/9 - --- -subst.c - - change brace_expand_word_list to defer brace expansion on compound - array assignments that are arguments to builtins like `declare', - deferring the expansion until the assignment statement is processed. - Fixes inconsistency reported by agriffis@n01se.net - - 7/16 - ---- -bashline.c - - fix bash_execute_unix_command to set rl_point correctly based on - READLINE_POINT. The old method of using save_point will not - work because maybe_make_readline_line will change rl_point. Bug - reported by Henning Bekel - -trap.c - - fix _run_trap_internal and run_pending_traps to save and restore - value of subst_assign_varlist so the dispose_words on it doesn't - leave dangling pointers after the trap handler runs. Fixes bug - reported by Marc Herbert - - 7/22 - ---- -subst.c - - fix off-by-one error in pos_params when computing positional - parameters beginning with index 0. Bug and fix from Isaac Good - - - 7/24 - ---- -lib/readline/display.c - - add code to _rl_move_cursor_relative and _rl_col_width to short- - circuit a few special cases: prompt string and prompt string plus - line contents, both starting from 0. Saves a bunch of calls to - multibyte character functions using already-computed information. - As a side effect, fixes bug reported by Lasse Karkkainen - - -subst.c - - fixed a problem in split_at_delims that could leave *cwp set to -1 - if the line ends in IFS whitespace and SENTINEL is one of those - whitespace characters. Fixes problem with setting COMP_CWORD for - programmable completion reported by Ville Skytta - -bashline.c - - change bash_execute_unix_command to clear the current line (if the - terminal supplies the "ce" attribute) instead of moving to a new - line. Inspired by report from Henning Bekel - -builtins/printf.def - - changes to allow printf -v var to assign to array indices, the way - the read builtin can. Suggested by Christopher F. A. Johnson - - -lib/readline/complete.c - - fix rl_old_menu_complete and rl_menu_complete to appropriately set - and unset RL_STATE_COMPLETING while generating the list of matches. - Fixes debian bug #538013 reported by Jerome Reybert - - - 7/25 - ---- -execute_cmd.c - - change execute_builtin to temporarily turn off and restore the ERR - trap for the eval/source/command builtins in the same way as we - temporarily disable and restore the setting of the -e option. - Fixes bug reported by Henning Garus - - 7/27 - ---- -shell.c - - add fflush(stdout) and fflush(stderr) to exit_shell before closing - any file descriptors at exit time (e.g., coproc pipes) - - 7/30 - ---- -lib/readline/complete.c - - new function rl_backward_menu_complete, just passes negative count - argument to rl_menu_complete - - change rl_menu_complete to act appropriately if rl_last_command is - rl_backward_menu_complete, so we can cycle forward and backward - through the list of completions - -lib/readline/doc/{readline.3,rluser.texi},doc/bash.1 - - document new "menu-complete-backward" bindable readline function. - Suggested by Jason Spiro - -lib/readline/vi_keymap.c - - add binding of C-n to menu-complete and C-p to menu-complete-backward - in vi-insert keymap, as suggested by Jason Spiro - - -pcomplete.c - - fixed a bug in programmable_completions: the options it returned from - the compspec it found were set before generating the completions, - which meant that any changes made by "compopt" were overridden and - only in effect for the duration of the executing shell function - rather than the entire completion. Fixes bug reported by Ville - Skytta - - 7/31 - ---- -lib/readline/keymaps.c - - fixed memory leak in rl_discard_keymap by freeing storage associated - with hierarchical keymaps - - new convenience function, rl_free_keymap, that calls rl_discard_keymap - and frees the keymap passed as an argument - -lib/readline/util.c - - new bindable keymap function, _rl_null_function, to be used internally - -lib/readline/rlprivate.h - - extern declaration for _rl_null_function - -lib/readline/bind.c - - fix rl_generic_bind in the case where we are trying to override a - keymap with a null function (e.g., when trying to unbind it). We - can't use a NULL function pointer in ANYOTHERKEY since that's - indistinguishable from the keymap not having been overridden at all. - We use _rl_null_function instead, which simply does nothing. We - could add an rl_ding to it later. Fixes problem with hitting ESC - repeatedly while in vi command mode reported by James Rowell - - -builtins/bind.def - - call rl_bind_keyseq instead of rl_set_key for -r option - -lib/readline/readline.c - - Set vi_movement_keymap[ESC] to _rl_null_function after binding the - arrow keys in bind_arrow_keys() to allow vi-mode users to hit ESC - multiple times in vi command mode while still allowing the arrow - keys to work - - 8/2 - --- -bashline.c - - fix clear_hostname_list by setting hostname_list_initialized to 0 - after freeing all list members. Fixes bug reported by Freddy - Vulto - -lib/readline/display.c - - in update_line, if we copy data from one line to another because we - are wrapping a multibyte character from, say, the first line to the - second, we need to update OMAX and the line indices to account for - the moved data. Bug report and fix from Martin Hamrle - - - 8/3 - --- -pcomplete.h - - defines for EMPTYCMD ("_EmptycmD_") and DEFAULTCMD ("_DefaultCmD_") - -builtins/complete.def - - change compopt_builtin to make -E work on the "empty" command - completion - - fix print_compitem and print_compopts to replace EMPTYCMD with -E - - added -D (default) option to complete/compgen/compopt. No supporting - code yet - -doc/bash.1,lib/readline/doc/rluser.texi - - document new -D, -E options to compopt - - document new -D option to complete/compgen - -shell.h - - new define, EX_WEXPCOMSUB, value of 125 - - new define, EX_RETRYFAIL, value of 124 (for programmable completion) - -subst.c - - use EX_WEXPCOMSUB instead of literal 125 as exit status when a shell - invoked to run wordexp(3) with the -n option supplied attempts a - command substitution - -pcomplete.c - - new define, PCOMP_RETRYFAIL, used to indicate a "failure, retry with - next completion" status to the programmable completion code - - 8/4 - --- -pcomplete.c - - changed gen_shell_function_matches to take an extra parameter - indicating whether the specified shell function was not found or - returned the special "fail/retry" status, and, if it was either, - to not bother returning any matches list - - changed gen_compspec_completions to take an extra parameter to pass - through the "found" status from gen_shell_function_completions - - new function gen_progcomp_completions to take care of searching for - and evaluating a compspec for a particular word, saving its status, - and returning to its caller (programmable_completions) whether or - not to retry completion. This function also checks whether a - retry changed the compspec associated with a command and short- - circuits the retry if it has not - - changed programmable_completions to try default completion (if set) - if a specific completion was not found for a command - - changed programmable_completions to implement "fail/retry" semantics - for a shell function that returns 124 and changes the compspec - associated with the command. All based on proposal and changes from - Behdad Esfahbod (Red Hat bugzilla 475229) - -doc/bash.1,lib/readline/doc/rluser.texi - - documented new dynamic programmable completion functionality - - 8/5 - --- -stringlib.c - - first argument to substring() is now `const char *' - -externs.h - - changed extern declaration for substring() - -subst.c - - skipsubscript now takes a third FLAGS argument, passes to - skip_matched_pair - - skip_matched_pair now interprets flags&1 to mean not to parse - matched pairs of quotes, backquotes, or shell word expansion - constructs - -{subst,general,expr}.c - - changed skipsubscript() callers - -assoc.c - - changed assoc_to_assign to double-quote the key if it contains any - shell metacharacters - -arrayfunc.c - - use skipsubscript in quote_assign rather than quote any glob - characters in the subscript of an array assignment - - in assign_compound_array_list, call skipsubscript with a flags - argument of 1 if assigning an associative array to avoid trying - to re-parse quoted strings - -redir.c - - set expanding_redir before expanding body of here documents and - here strings to avoid looking for variables in temporary env - - 8/7 - --- -lib/readline/readline.c - - in _rl_dispatch_callback, return value of -3 means that we have - added to a key sequence, but there are previous matches in the - sequence. Don't call _rl_subseq_result if we get a -3 from a - previous context in the chain; just go back up the chain. Report - and fix from - -bashline.c - - fixes to history_completion_generator and bash_dabbrev_expand to - make dabbrev-expand inhibit suppressing of appending space char - to matches. Have to do it with the generator too because - rl_menu_complete turns off suppressing the appended space in - set_completion_defaults(). Suggestion from Dan Nicolaescu - - - suppress completion match sorting in bash_dabbrev_expand by - setting rl_sort_completion_matches = 0. Suggestion from Dan - Nicolaescu - - don't qsort history match list in build_history_completion_array - if dabbrev_expand_active == 1 - - start the loop in build_history_completion_array that gathers words - from history for possible completions from the end of the list - rather than the beginning. It doesn't matter where you start if - the results are sorted, and dabbrev-expand is supposed to offer - the most recent completions first - - 8/12 - ---- -execute_cmd.c - - change to execute_command_internal to make [[ ... ]] conditional - command subject to settings of `set -e' and the ERR trap - - 8/14 - ---- -execute_cmd.c - - change to execute_command_internal to make (( ... )) arithmetic - command subject to settings of `set -e' and the ERR trap - -lib/readline/text.c - - new bindable function, rl_skip_csi_sequence, reads the characters - that make up a control sequence as defined by ECMA-48. Sequences - are introduced by the Control Sequence Indicator (CSI) and - contain a defined set of characters. Insert, End, Page Up and so - on are CSI sequences. Report and code from Andy Koppe - - -lib/readline/readline.h - - extern declaration for rl_skip_csi_sequence - -lib/readline/funmap.c - - new bindable command "skip-csi-sequence", runs rl_skip_csi_sequence - -doc/bash.1,lib/readline/doc/{readline.3,rluser.texi} - - documented new bindable command "skip-csi-sequence", unbound by - default - -builtins/evalfile.c - - fix _evalfile to remove embedded null bytes from the file read - into the string. Report and proposed fix from Roman Rakus - - -{configure,config.h}.in - - check for syslog(3), define HAVE_SYSLOG - - check for syslog.h, define HAVE_SYSLOG_H - -config-top.h - - new define SYSLOG_HISTORY, disabled by default - -config-bot.h - - if HAVE_SYSLOG or HAVE_SYSLOG_H are not defined, undef SYSLOG_HISTORY - -bashhist.c - - if SYSLOG_HISTORY is defined, call bash_syslog_history with the - line added to the history in bash_add_history. - - new function, bash_syslog_history(line), sends line to syslog at - user.info. The line is truncated to send no more than 600 - (SYSLOG_MAXLEN) bytes to syslog. Feature requested by many, and - required by some national laws - -sig.c - - in termsig_handler, resend SIGHUP to children if subshell_environment - indicates we're a shell performing command or process substitution - -jobs.c - - add CHECK_TERMSIG calls to wait_for in addition to the ones in - waitchld() - -builtins/shopt.def - - new functions set_bashopts, parse_bashopts, and initialize_bashopts - to manage new environment variable $BASHOPTS, like $SHELLOPTS but - for shopt options - - change toggle_shopts to call set_bashopts after setting options, so - $BASHOPTS reflects new values - -shell.c - - call initialize_bashopts after calling initialize_shell_options at - shell startup - -configure.in - - new configure `enable' option --enable-exended-glob-default, to - set the initial default value of the `extglob' shell option - -config.h - - new define, EXTGLOB_DEFAULT, controlled by the `extended-glob-default' - configure option - -pathexp.c - - initialize extended_glob variable to EXTGLOB_DEFAULT - -doc/{bash.1,bashref.texi} - - document new $BASHOPTS variable and its behavior - -doc/bashref.texi - - document new --enable-extended-glob-default configure option - - 8/16 - ---- -print_cmd.c - - new variables: xtrace_fd and xtrace_fp, the file descriptor and - FILE * to which we send `set -x' tracing output. If fd == -1 - then fp == STDERR, the default mode - - new function xtrace_init, sets xtrace_fd == -1 and xtrace_fp = stderr - - new function xtrace_set (fd, fp), sets xtrace_fd and xtrace_fp - to the arguments - - new function xtrace_reset, handles closing old xtrace fd/fp and - moving them back to -1/stderr - - new function xtrace_fdchck, calls xtrace_reset if the fd passed as - an argument is xtrace_fd - - change xtrace functions to fprintf to xtrace_fp instead of stderr - -shell.c - - call xtrace_init() very early in main() - -variables.c - - new special variable, BASH_XTRACEFD, holds file descriptor used for - set -x trace output. Inspired by suggestion from Bruce Korb - - -doc/{bash.1,bashref.texi} - - added description of new BASH_XTRACEFD variable - -redir.c - - add calls to xtrace_fdchk to the redirections that close file - descriptors, so we notice if we close BASH_XTRACEFD and compensate - accordingly (same places that call coproc_fdchk()) - - 8/18 - ---- -lib/readline/text.c - - change to _rl_replace_text to add error checks: start must be <= - end, and we don't call rl_insert_text if passed the empty string - -config.h.in - - add define for HAVE_ICONV, already found by intl autoconf macros - - add define for HAVE_LOCALE_CHARSET - -aclocal.m4 - - add check for locale_charset() to BASH_CHECK_MULTIBYTE - -lib/sh/fnxform.c - - new file with two public function: fnx_tofs and fnx_fromfs. - Primarily intended for use on MacOS X, they use iconv to convert - between whatever the current locale encoding is and "UTF-8-MAC", - a special encoding on OS X in which all characters are - decomposed unicode, as the HFS+ filesystem stores them. These - functions return a pointer to a local buffer, allocated once and - resized as necessary, to avoid too many allocations; callers - should not free the return value, since it may be the string - passed - -Makefile.in - - make sure LIBICONV is set by autoconf (@LIBICONV@) and added to - list of link libraries - -externs.h - - new extern declarations for fnx_fromfs and fnx_tofs - -lib/glob/glob.c - - convert the filename read using readdir() in glob_vector() using - fnx_fromfs and use that value in the call to strmatch. This - ensures that we're using the precomposed Unicode value of the - filename rather than the native decomposed form. Original bug - report from Len Lattanzi ; fix inspired by - Guillaume Outters - - 8/19 - ---- -lib/readline/complete.c - - new completion hook: rl_filename_rewrite_hook, can rewrite or modify - filenames read from the filesystem before they are compared to the - word to be completed - -lib/readline/readline.h - - extern declaration for rl_filename_rewrite_hook - -lib/readline/doc/rltech.texi - - document rl_filename_rewrite_hook - -bashline.c - - new function, bash_filename_rewrite_hook, assigned to - rl_filename_rewrite_hook. Calls fnx_fromfs to convert from - filesystem format to "input" format. This makes completing - filenames with accented characters work on Mac OS X - - 8/20 - ---- -lib/readline/bind.c - - new bindable variable "skip-completed-text", bound to - _rl_skip_completed_text. If enabled, it means to note when - completing before the end of a word and skipping over characters - after rl_point that match in both the completion to be inserted - and the word being completed. It means that completing - `Makefile' with the cursor after the `e' results in `Makefile' - instead of `Makefilefile'. Inspired by an idea from Jared - Yanovich from back in 2004 - -lib/readline/rlprivate.h - - extern declaration for _rl_skip_completed_text - -lib/readline/complete.c - - implement semantics of _rl_skip_completed_text in insert_match: - skip characters in `replacement' that match chars in rl_line_buffer - from the start of the word to be completed - - 8/21 - ---- -error.c - - change parser_error to set last_command_exit_value to 2 before - calling exit_shell (if set -e is enabled), so any exit or ERR - trap gets the right value of $?. Suggestion from Stefano - Lattarini - -braces.c - - fix expand_seqterm so that a non-zero-prefixed term that's longer - than a zero-prefixed term determines the length of each term - in the brace-expanded sequence. This means that things like - {01..100} will have three digits in all the elements of the - expanded list. Fixes bug reported by Jeff Haemer - - - 8/24 - ---- -{arrayfunc,variables}.c - - when inserting a value into an associative array using syntax like - T=v where T is an already-declared associative array using key "0", - make sure the key is in newly-allocated memory so it can be freed - when the variable is unset. Fixes bug reported as redhat 518644 - by Jon Fairbairn - - 8/26 - ---- -lib/readline/funmap.c - - add "old-menu-complete" binding for rl_old_menu_complete - -lib/readline/readline.h - - add extern declaration for rl_old_menu_complete - -subst.c - - fix memory leak when processing ${!prefix@}. Need to dispose all - words in the word list created from all matching variable. Fixes - bug reported by muszi@muszi.kite.hu. - - 8/29 - ---- -execute_cmd.c - - add fflush(stdout) and fflush(stderr) to child coproc code before - calling exit after execute_in_subshell - - 8/31 - ---- -lib/readline/{{bind,readline}.c,rlprivate.h} - - new bindable variable, "echo-control-characters", enabled by default. - This controls whether or not readline honors the tty ECHOCTL bit - and displays characters corresponding to keyboard-generated signals. - Controlled by _rl_echo_control_chars variable, declared in readline.c - -lib/readline/signals.c - - if _rl_echo_control_chars == 0, don't go through _rl_echo_signal_char - - -lib/readline/doc/{readline.3,rluser.texi} - - document "echo-control-characters" bindable variable - - 9/1 - --- -lib/readline/histexpand.c - - hist_string_extract_single_quoted now takes an additional argument: - a flags word. The only defined value (flags & 1) allows backslash - to quote the single quote. This is to inhibit history expansion - inside $'...' containing an escaped single quote. - - change history_expand to call hist_string_extract_single_quoted - with flags == 1 if it sees $'. Fixes bug reported by Sean - Donner - - 9/2 - --- -builtins/printf.def - - add a call to sh_wrerror if ferror() succeeds in the PRETURN macro, - to print an error message in the case that the final fflush fails - (for instance, because it attempts to write data that didn't have a - trailing newline). Fixes bug reported by Stefano Lattarini - - - 9/7 - --- -arrayfunc.c - - some fixes to assign_compound_array_list to avoid null pointer - dereferences pointed out by clang/scan-build - -lib/glob/glob.c - - fixes to udequote_pathname and wdequote_pathname to avoid possible - null pointer dereferences pointed out by clang/scan-build - -lib/readline/undo.c - - fix to _rl_copy_undo_list (function unused) to avoid deref of - uninitialized pointer pointed out by clang/scan-build - -general.c - - fix string_to_rlimtype so it works if passed a null pointer (though - it never is) - -builtins/mapfile.def - - fix to mapfile() to avoid possible null pointer dereference pointed - out by clang/scan-build - -variables.c - - fix to valid_exportstr to avoid possible null pointer dereferences - pointed out by clang/scan-build - -bashline.c - - fix to bash_execute_unix_command to avoid possible null pointer - dereference if READLINE_LINE or READLINE_POINT is not bound - - 9/11 - ---- -[Prayers for the victimes of 9/11/2001] - -command.h - - add `rflags' member to struct redirect to hold private flags and - state information - - change redirector to a REDIRECTEE instead of int to prepare for - possible future changes - -{copy_cmd,dispose_cmd,make_cmd,print_cmd,redir}.c - - changes resulting from type change of `redirector' member of struct - redirect: change x->redirector to x->redirector.dest and add code - where appropriate to deal with x->redirector.filename - -make_cmd.h - - change extern declaration for make_redirection - -make_cmd.c - - first argument of make_redirection is now a `REDIRECTEE' to prepare - for possible future changes. First arg is now assigned directly to - redirector member instead of assigning int to redirector.dest - -{make_cmd,redir}.c,parse.y - - changes resulting from type change of first argument to - make_redirection from int to REDIRECTEE. In general, changes are - using REDIRECTEE sd and assigning old argument to sd.dest, then - passing sd to make_redirection - -make_cmd.[ch],parse.y - - add fourth argument to make_redirection: flags. Sets initial value - of `rflags' member of struct redirect - - changed all callers of make_redirection to add fourth argument of 0 - - 9/15 - ---- -parse.y - - change read_token_word to return REDIR_WORD for tokens of the form - {var} where `var' is a valid shell identifier and the character - following the } is a `<' or `>' - - add REDIR_WORD versions of all input and output file redirections - and here documents - -print_cmd.c - - change input and output file redirection direction and here - document cases of print_redirection to print a varname - specification of the form {var} when appropriate. Still need - to fix rest of cases - -redir.c - - implement REDIR_VARASSIGN semantics for file input and output - redirections and here documents - - 9/16 - ---- -parse.y - - added REDIR_WORD versions of remaining redirection constructs except - for err_and_out ones - -redir.c - - handle REDIR_VARASSIGN semantics for rest of redirection constructs - - accommodate REDIR_VARASSIGN when translating redirections - - new function, redir_varvalue, does variable lookup for {v} when - redirection needs the value (e.g., r_close_this) - -print_cmd.c - - fix rest of cases to print {varname} when REDIR_VARASSIGN is set in - redirect->rflags - -doc/{bash.1,bashref.texi} - - document new {varname} REDIR_VARASSIGN form of redirections - -tests/vredir.{right,tests},vredir[1-5].sub - - tests for new {varname} REDIR_VARASSIGN form of redirections - - 9/18 - ---- -subst.c - - new flags argument to split_at_delims: these flags are ORd with - SD_NOJMP and passed to skip_to_delim - - change skip_to_delim to honor new SD_NOQUOTEDELIM flag by not - checking whether or not single and double quotes are delimiters - if it's set in passed flags until after skipping quoted strings. - -subst.h - - change extern declaration for split_at_delims - - new define for SD_NOQUOTEDELIM flag - -pcomplete.c - - pass SD_NOQUOTEDELIM in flags argument to split_at_delims so single - and double quotes, even though they're in - rl_completer_word_break_characters, don't act as word delimiters - for programmable completion. Fixes bug reported by Freddy - Vulto - -lib/glob/glob.c - - in glob_filename, after recursively scanning a directory specified - with `**', turn off GX_ALLDIRS|GX_ADDCURDIR before calling - glob_vector on the rest of the pathname, since it may not apply to - the rest of the pattern. Turned back on if the filename makes it - appropriate. Fixes bug reported by Anders Kaseorg - -redir.c - - change execute_null_command to fork a child to execute if any of - the commands redirections have the REDIR_VARASSIGN flag set, since - those commands are not supposed to have side effects - -test.c - - < and > binary operators will obey the locale by using strcoll if - the TEST_LOCALE flag is passed to binary_test - -test.h - - new define for TEST_LOCALE - -execute_cmd.c - - execute_cond_node sets TEST_LOCALE so [[ str1 < str2 ]] (and >) - obey the locale. Fixes bug/incompatibility reported by Greg - Wooledge - -doc/{bash.1,bashref.texi} - - documented [[ command new locale-sensitive treatment of < and > - - 9/24 - ---- -configure.in - - add "darwin10" cases like darwin8 and darwin9 to handle linking with - included readline and history libraries - - 9/26 - ---- -lib/readline/display.c - - modify change of 7/24 to use prompt_physical_chars instead of - prompt_visible_length to account for visible multibyte characters in - the line (usually in the prompt). Fixes debian bug #547264 - reported by Pietro Battiston - - add flags argument to _rl_col_width; changed callers. flags > 0 - means that it's ok to use the already-computed prompt information; - flags == 0 means that we're expanding the prompt and we should not - short-circuit - -parse.y - - in decode_prompt_string, when expanding \w and \W on Mac OS X, - use fnx_fromfs to convert from "filesystem" form to "input" form. - This makes $PWD with multibyte characters work in the prompt - string on Mac OS X - -lib/sh/fnxform.c - - in fnx_fromfs and fnx_tofs, use templen instead of outlen as last - argument in calls to iconv, since outlen is used to keep track of - the size of the buffer, and iconv potentially modifies its - `outbytesleft' argument - - 9/29 - ---- -subst.c - - make skip_to_delim understand how to skip over process substitution - constructs the way it skips $(...) command substitution - - 9/30 - ---- -lib/readline/terminal.c - - don't set the `terminal has meta key' flag if the `MT' capability is - available; that means something completely different - - 10/1 - ---- -builtins/help.def - - make sure width is at least 7, since we pass `width/2 - 3' to strncpy - as the length argument. Terminal widths <= 6 are converted to 80. - Fixes bug reported by Chris Hall - -configure.in - - changed version to 4.1-alpha - -subst.h - - new flag for skip_to_delim: SD_NOSKIPCMD, which means to not skip - over embedded command and process substitutions, but rather to look - for delimiters within them - -subst.c - - implement semantics of SD_NOSKIPCMD in skip_to_delim - -bashline.c - - call skip_to_delim with SD_NOSKIPCMD from find_cmd_start, so - programmable completion can use the completion defined for `b' for - command lines like "a $(b c". Fixes inconsistency/bug reported by - Freddy Vulto - -parser.h - - replace unused PST_CMDTOKEN parser state value with PST_EXTPAT, - means currently parsing an extended glob pattern (extglob) - -parse.y - - fix cond_node() so that extended_glob is set before parsing the - rhs of the `==' or `!=' operators. For ksh93 compatibility. - - reset extended_glob to global value (saved in parse_cond_command()) - in reset_parser() - - 10/5 - ---- -jobs.c - - change waitchld() to only interrupt the wait builtin when the shell - receives SIGCHLD in Posix mode. It's a posix requirement, but - makes easy things hard to do, like run a SIGCHLD trap for every - exiting child. Change prompted by question from Alex Efros - - -doc/bashref.texi - - document new posix mode behavior about SIGCHLD arriving while the - wait builtin is executing when a trap on SIGCHLD has been set - - 10/6 - ---- -lib/readline/histexpand.c - - fix hist_expand to keep from stopping history expansion after the - first multibyte character (a `break' instead of a `continue'). - Fixes debian bug (#549933) reported by Nikolaus Schulz - - - 10/8 - ---- -builtins/read.def - - implement new `-N nchars' option: read exactly NCHARS characters, - ignoring any delimiter, and don't split the result on $IFS. - Feature requested by Richard Stallman - -doc/{bash.1,bashref.texi} - - document new `read -N' option - - 10/9 - ---- -lib/readline/bind.c - - new bindable variable, "enable-meta-key", controls whether or not - readline enables any meta modifier key the terminal claims to - support. Suggested by Werner Fink - -lib/readline/doc/{readline.3,rluser.texi},doc/bash.1 - - document new readline "enable-meta-key" bindable variable - - 10/10 - ----- -trap.c - - new function, free_trap_string(), does what it says and turns off - SIG_TRAPPED flag without changing signal disposition - -[bash-4.1-alpha frozen] - - 10/16 - ----- -builtins/mapfile.def - - return an error if the variable passed is not an indexed array. - Fixes bug reported by Nick Hobson - - change help text to make it clear that an indexed array is required - -doc/{bash.1,bashref.texi} - - changed description of mapfile to note that the array variable - argument must be an indexed array, and mapfile will return an - error if it is not - -subst.c - - change expand_string_unsplit and expand_string_leave_quoted to - add the (previously unused) W_NOSPLIT2 flag to the created word - - change expand_word_internal to understand W_NOSPLIT2 to mean that - we're not going to split on $IFS, so we should not quote any - characters in IFS that we add to the result string. Fixes bug - reported by Enrique Perez-Terron - - change cond_expand_word similarly. Fixes rest of bug reported by - Enrique Perez-Terron - -parse.y - - save and restore value of last_command_subst_pid around call to - expand_prompt_string in decode_prompt_string. Fixes bug that causes - $? to be set wrong when using a construct like false || A=3 when - set -x is enabled and $PS4 contains a command substitution. Reported - by Jeff Haemer - - 10/17 - ----- -execute_cmd.c - - in execute_in_subshell, make sure we set setjmp(return_catch) before - running the command, in case the command or its word expansion - calls jump_to_top_level. Fixes bug reported by Nils Bernhard - - -subst.c - - new PF_NOSPLIT2 flag for param_expand - - parameter_brace_expand takes a new `pflags' argument, before the - `output' parameters; passes to param_expand as necessary - - change parameter_brace_expand to call parameter_brace_expand_word - with the PF_NOSPLIT2 flag if the pflags argument to - parameter_brace_expand has it set - -parse.y - - change report_syntax_error to set last_command_exit_value to - EX_BADSYNTAX if parse_and_execute_level is > 0, indicating a - syntax error while we're executing a dot script, eval string, - trap command, etc. - -builtins/evalstring.c - - in parse_and_execute, if parse_command() returns non-zero, - indicating a parse error, print a warning message if the conditions - would require a posix-mode shell to abort (parse error in a `.' - script or eval string) - - 10/19 - ----- -builtins/evalfile.c - - even if the `check binary' flag is not passed to _evalfile, return an - error after reading 128 null characters if called by `source', on - the assumption that it's probably a binary file. [This will be in - bash-4.1-beta] - - 10/24 - ----- -[bash-4.1-alpha released] - -bashline.c - - don't call command_substitution_completion_function if we're - completing a substring delimited by a single quote. Fixes bug - reported by bash-bugs@atu.cjb.net - -lib/readline/complete.c - - make sure _rl_skip_completed_text defaults to 0, as the - documentation states (incorrect in bash-4.1-alpha) - - in insert_match, skip over a close quote in the replacement text if - the character at point when completion is invoked is a single - quote. Fixes complaint from bash-bugs@atu.cjb.net - - 10/26 - ----- -shell.c - - in main, make sure "$EMACS" is non-null before calling strstr on its - value. Fixes Red Hat bug 530911 submitted by Mitchell Berger - -builtins/mapfile.def - - don't save callback commands in shell history. Suggested by - Jan Schampera - -mailcheck.c - - in file_mod_date_changed, make sure the modification time is later - than the saved modification date, not just that it's not equal. - Fix from Evgeniy Dushistov - - in file_access_date_changed, make sure the access time is later - than the saved access time, not just that it's not equal - - 10/27 - ----- -builtins/shopt.def - - added new `compat40' compatibility variable, with associated changes - to shell_compatibility_level(), since the default compatibility level - is now 41 - -test.c - - make the < and > operators to [[ use strcoll() only if the shell - compatibility level is greater than 40 (it is 41 by default in - bash-4.1) - - 10/28 - ----- -support/shobj-conf - - decrease the default version of FreeBSD that creates shared libraries - to 4.x. Advice from Peter Jeremy - - 11/2 - ---- -parse.y - - change parse_comsub to free `heredelim' and set it to 0 whenever the - comsub scanner finds the end of a here document. Really need to - implement a stack of here doc delimiters like in the parser (can we - use redir_stack here, too?) - - fix parse_comsub to not attempt to read another here doc delimiter - after seeing a shell break character (that is not newline) if we - already have one. Fixes Debian bash bug #553485, submitted by - Samuel Hym - - 11/3 - ---- -variables.c - - fix bind_variable_internal to call a variable's dynamic 'set function' - with the right arguments depending on whether it's an associative - array, an indexed array, or a scalar. Fixes Ubuntu bug #471504 - https://bugs.launchpad.net/ubuntu/+source/bash/+bug/471504 reported - by AJ Slater - -[bash-4.1-beta frozen] - - 11/11 - ----- -builtins/printf.def - - in getintmax(), in the case of a conversion error, return the partial - value accumulated so far, which is suppose to be what - strtoimax/strtoll/strtol returns - - 11/17 - ----- -[bash-4.1-beta released] - - 11/18 - ----- -builtins/{common.h,shopt.def},shell.c - - changed shopt variable "set functions" to take the option name as - the first argument; changed function prototypes and callers - -builtins/shopt.def - - change set_compatibility_level() to turn off other compatNN options - when one is set -- enforce mutual exclusivity. Fixes problem noted - by Jan Schampera - - 11/19 - ----- -lib/readline/rltty.c - - make sure prepare_terminal_settings() tests for the presence of - ECHOCTL before using it. Fixes bug reported by Joachim Schmitz - - -config-top.h - - new WORDEXP_OPTION define (off by default) - -shell.c - - don't include the --wordexp option or the supporting function - (run_wordexp) if WORDEXP_OPTION is not defined. Suggested by - Aharon Robbins - -execute_cmd.c - - in execute_cond_node, turn on comsub_ignore_return if the flags - indicate we're ignoring the return value before calling - cond_expand_word. Fixes bug reported by Anirban Sinha - - - 11/20 - ----- -lib/sh/snprintf.c,builtins/printf.def - - change check for HAVE_ASPRINTF and HAVE_SNPRINTF to check if value - is 1 or 0 rather than whether they are defined or not. This allows - a value of 0 to enable function replacement - -configure.in,aclocal.m4 - - new autoconf macro, BASH_FUNC_SNPRINTF, checks for snprintf present - and working as C99 specifies with a zero length argument. Idea - from Greg Wooledge - - new macro BASH_FUNC_VSNPRINTF, does same thing for vsnprintf - - 11/25 - ----- -subst.c - - in command_substitute, only tell parse_and_execute to reset the line - number in an interactive shell if sourcelevel == 0 -- we'll use the - line numbers from the sourced file - -execute_cmd.c - - in execute_simple_command, only subtract function_line_number from - line_number if sourcelevel == 0. If sourcing, we'll use the line - numbers from the sourced file. Fixes bug reported by Hugo - Mildenberger - -builtins/declare.def - - in declare_internal, call bind_assoc_variable instead of - bind_array_variable in the case of declare -A foo=bar. Fixes bug - reported by Bernd Eggink . - - 11/27 - ----- -lib/readline/util.c - - change declaration for _rl_walphabetic to use prototype, assuming - that any system with multibyte characters has a compiler that can - handle prototypes. Fix for AIX compilation problem reported by - Nick Hillman - - 11/28 - ----- -execute_cmd.c - - make funcnest file-scope static and unwind-protect its value in - execute_function, so it can be used as a real measure of function - call nesting - -general.c - - fix off-by-one error in trim_pathname that caused it to short-circuit - when PROMPT_DIRTRIM == number of directories - 1. Fixes bug - reported by Dennis Williamson - - 11/29 - ----- -jobs.c - - when fork() returns -1/EAGAIN, call waitchld(-1, 0) so the shell can - reap any dead jobs before trying fork again. Currently disabled - until bash-4.2 development starts - -lib/readline/complete.c - - when incrementing _rl_interrupt_immediately, make sure it's greater - than 0 before decrementing it. In practice, not a problem, but - the right way to do it. Suggested by Jan Kratochvil - - -lib/readline/signals.c - - make sure rl_signal_handler doesn't set rl_caught_signal if - _rl_interrupt_immediately is set, so RL_CHECK_SIGNALS doesn't - cause it to be processed twice. Suggested by Jan Kratochvil - - - if the callback interface is being used, use the code path that - immediately handles signals. This restores the readline-5.2 - behavior. Fixes GDB readline bug reported by Jan Kratochvil - - - 12/18 - ----- -[bash-4.1-rc1 released] - - 12/22 - ----- -config-top.h - - don't have SYSLOG_HISTORY enabled by default - -lib/sh/Makefile.in - - add explicit dependency on pathnames.h for parallel make support - -externs.h - - add extern declaration for xtrace_fdchk - -lib/sh/snprintf.c - - add local prototype declarations for isinf, isnan if we are providing - local definitions - -lib/sh/fnxform.c - - add extern declaration for get_locale_var if HAVE_LOCALE_CHARSET not - defined - -execute_cmd.c - - define NEED_FPURGE_DECL so we pick up any extern declaration for - fpurge (e.g., if the system doesn't provide it) - -builtins/shopt.def - - correct prototype and declaration for set_shellopts_after_change so - it's the correct type for shopt_set_func_t - - add new function shopt_enable_hostname_completion that is the correct - type for shopt_set_func_t; just calls enable_hostname_completion and - returns its result - - 12/26 - ----- -doc/{bash.1,bashref.texi} - - add \E and \" escape sequences to ANSI-C quoting description. - Suggested by Aharon Robbins - - 12/29 - ----- -doc/bash.1 - - make sure shell and environment variable names are always in - `small caps' bold. Suggested by Aharon Robbins - - 12/30 - ----- -{execute_cmd.c,parse.y,Makefile} - - changes for building minimal configuration from Matthias Klose - - -[bash-4.1 frozen] - - 12/31 - ----- -[bash-4.1 released] - - 1/5/2010 - -------- -doc/bashref.texi - - document compat32 and compat40 shopt options. Omission pointed out - by Dilyan Palauzov - - 1/6 - --- -lib/readline/complete.c - - use `convfn' (converted filename) instead of entry->d_name (filename - read from file system) when adding partial or full completions to - the command line. Bug and fix from Guillaume Outters - - - 1/7 - --- -builtins/printf.def - - fix prototype in extern declaration for vsnprintf. Fix for bug - reported by Yann Rouillard - - 1/9 - --- -parse.y - - fix shell_getc to handle alias expansions containing quoted - newlines. Problems in bash-4.1 with aliases containing quoted - newlines in the middle of and at the end of their expansion. - Fix for bug reported by Jonathan Claggett - - - change mk_alexpansion to not append a space to an alias - expansion ending with a newline. Works with shell_getc - - 1/11 - ---- -lib/glob/Makefile.in - - add dependencies on shell.h and pathnames.h. From Mike Frysinger - - - 1/15 - ---- -doc/{bash.1,{bashref,version}.texi},lib/readine/doc/rluser.texi - - some typo fixes from Aharon Robbins - - added descriptions of ENV, COPROC, and MAPFILE variables - - added descriptions of READLINE_LINE and READLINE_POINT - - 1/21 - ---- -arrayfunc.c - - free `akey', the word-expanded index into the assoc array to avoid - mem leak in array_value_internal - - free index into assoc array in unbind_array_element - - change array_value_internal to take an additional argument: an - arrayind_t *. If not null, an index to an indexed array is - returned there. If not an indexed array or subscript is @ or - *, the value is unchanged - - 1/22 - ---- -builtins/ulimit.def - - include if we found it during configure and we don't - have resources. Fixes omission reported by Joachim Schmitz - - -{configure,config.h}.in - - check for , define HAVE_ULIMIT_H if found - -lib/sh/oslib.c - - include for extern declaration for kill(2) if - HAVE_KILLPG not defined - -jobs.c - - if HAVE_KILLPG is not defined, add an extern prototype decl for - killpg() - - 1/24 - ---- -print_cmd.c - - when printing here-string redirections, don't quote the string. The - original quotes, if any, are still in place and don't need to be - requoted. Fixes bug reported by Arfrever Frehtes Taifersar Arahesis - - -subst.c - - fix array_length_reference to return 0 for variables that have not - been assigned a value. Fixes bug reported by Mart Frauenlab - , but is not backwards compatible - -arrayfunc.[ch] - - change array_value to take a new arrayind_t *indp parameter like - get_array_value; changed extern prototype declaration - -subst.c - - changed callers of array_value to add extra parameter - -expr.c - - change expr_streval to set a new `lvalue' parameter with information - about the string being evaluated: string, value, array index (if - any), variable evaluated (if set). - - saving and restoring current context now saves and restores the - current `lvalue' - - new function expr_bind_array_element, binds an array element with an - already-computed index to a specified value - - anywhere we set the current token to a string (STR), save and set - the current lvalue - - change calls to expr_bind_variable to check whether or not the - current lvalue indicates an indexed array was evaluated, and, if so, - call expr_bind_array_element using the already-computed index - (curlval.ind). Fixes problems with dynamic variables (e.g., RANDOM) - in array indices with {pre,post}-{inc,dec}rement and op= - operators reported by - - 1/25 - ---- -expr.c - - fix subexpr() to initialize curlval and lastlval when resetting all - of the rest of the expression-parsing variables - - 1/26 - ---- -builtins/setattr.def - - in show_var_attributes, if the variable is not set (value == 0), - don't print `name=""', just print `name'. Pointed out by - Mart Frauenlab - -arrayfunc.c - - fix array_keys to return NULL if the variable is not set or - invisible. Pointed out by Mart Frauenlab - - change array_value_internal to return NULL for variable which has - not been set - - 1/30 - ---- -bashline.c - - in command_word_completion_function, don't call glob_pattern_p - on hint -- use the already-computed `globpat'. At this point, - hint might contain an already-dequoted globbing character, but - glob_matches will be NULL. Fixes bug reported by - coyote@wariat.org.pl - - 2/5 - --- -builtins/exec.def - - set extern variable "exec_argv0" to the argument to -a - -shell.c - - if exec_argv0 is set, set dollar_vars[0] to it and set it to NULL, - assuming it was set by `exec -a'. `exec -a foo' now sets $0 to - foo in an executable shell script without a leading `#!' (fixes - longstanding bug) - - 2/8 - --- -variables.c - - in push_func_var, if a variable is in a special builtin's temporary - environment and needs to be propagated because we're in Posix mode, - or we just need to propagate a variable, and we are executing in a - function without any local variables (so the function-local variable - context has no variable hash table), make sure we create a hash - table so we have a place to save the variable to be propagated. - Fixes bug reported by Crestez Dan Leonard . - - 2/18 - ---- -builtins/hash.def - - change add_hashed_command to remove the command being looked up from - the hash table before trying to add it. That way, if it's not found, - there won't be anything remaining in the hash table - - 2/26 - ---- -trap.[ch] - - move IMPOSSIBLE_TRAP_HANDLER define to trap.h so other parts of the - shell can use it - -parse.y - - change yy_readline_get to use IMPOSSIBLE_TRAP_HANDER instead of NULL - as a sentinel value for the SIGINT signal handler - - make sure yy_readline_get resets interrupt_immediately to 0 after - calling readline() using the same criteria it used to set it to 1 - before the call -- make the code symmetric. Suggested by Werner - Fink - -builtins/read.def - - move assignment to `retval' before decrement of interrupt_immediately - and terminate_immediately and call to discard_unwind_frame - - move assign_vars label before decrement of interrupt_immediately and - terminate_immediately so those variables get reset appropriately - if read -t times out - -subst.h - - new define for Q_DOLBRACE, indicates double-quoted ${...} - -subst.c - - in parameter_brace_expand, before calling parameter_brace_expand_rhs, - add Q_DOLBRACE to `quoted' if we're within double quotes. - - in expand_word_internal, if the Q_DOLBRACE flag is set, remove a - backslash escaping a }. Result of a Posix discussion on the - austin-group list - - 2/27 - ---- -variables.c - - new functions to save and restore the PIPESTATUS variable's internal - array: save_pipestatus_array and restore_pipestatus_array - -variables.h - - new extern declarations for save_pipestatus_array and - restore_pipestatus_array - -trap.c - - in run_pending_traps, _run_trap_internal, and run_exit_trap, save - and restore $PIPESTATUS while traps are running. Fixes bug - reported by Florian Bruhin - -parse.y - - use save_pipestatus_array and restore_pipestatus_array in - save_parser_state and restore_parser_state, respectively, replacing - inline code - -lib/readline/histfile.c - - fix callers of history_filename to be prepared to cope with it - returning NULL - - change history_filename to return NULL if $HOME is not set, rather - than trying to write the history file in the current directory. - This is the default directory, used only if the application does - not specify a history filename. Changed due to long-ago (unsent) - bug report from OpenBSD - -{Makefile,config.h,configure}.in,externs.h,lib/sh/{dprintf.c,Makefile.in} - - change fdprintf to dprintf, which is the Posix standard interface, - look for it with configure, replace it if not available - - 2/28 - ---- -command.h - - add new subshell flag, SUBSHELL_RESETTRAP. Indicates to the trap - builtin that the shell is executing a command substitution and - should free the trap strings we left unfreed by reset_signal_handlers() - -trap.c - - free_trap_string() and free_trap_strings() are now compiled in - -builtins/trap.def - - if changing a signal disposition and the SUBSHELL_RESETTRAP flag is - set in subshell_environment, free the trap strings left unfreed by - reset_signal_handlers - -subst.c - - in command_substitute, set the SUBSHELL_RESETTRAP flag. This change - is for Austin Group Posix interpretation 53 - (http://austingroupbugs.net/view.php?id=53) - - 3/7 - --- -lib/sh/{Makefile.in,strchrnul.c},Makefile.in - - implementation of strchrnul, from gnulib - -configure.in,config.h.in - - look for strchrnul and compile in version in lib/sh/strchrnul.c if - not available - - look for mbsnrtowcs and define HAVE_MBSNRTOWCS if available - -lib/sh/xmbsrtowcs.c - - new function, xdupmbstowcs2, fast version of xdupmbstowcs used when - mbsnrtowcs is available and the indices are not required. Called - from xdupmbstowcs as required. Initial patch from - <0xe2.0x9a.0x9b@gmail.com> - - 3/22 - ---- -print_cmd.c - - call print_deferred_heredocs virtually every time a recursive call - to make_command_string_internal is made so here documents get - printed correctly when they are attached to commands inside compound - commands such as for and while. Fixes bug reported by Mike - Frysinger - - 3/25 - ---- -builtins/printf.def - - fix have_precision case in PF macro to call printf with precision - instead of fieldwidth argument. Fixes bug reported by Rob Robason - - - 3/26 - ---- -trap.[ch] - - new function, signal_is_hard_ignored, returns true if the shell - inherited SIG_IGN as a signal's disposition - - new function, set_original_signal (sig, handler), provides interface - for rest of shell to set original_signals[sig] = handler - -execute_cmd.c - - execute_disk_command needs to call reset_terminating_signals in the - child process before resetting traps with restore_original_signals - -builtins/trap.def - - call initialize_terminating_signals before calling display_traps for - trap -p or trap without any other arguments. Possible future use - -lib/readline/complete.c - - rl_filename_completion_function needs to call - rl_filename_dequoting_function with `dirname' (which has already - been tilde-expanded) instead of `users_dirname', because it calls - opendir with `dirname'. Fixes bug reported by Stefan H. Holek - - - 3/27 - ---- -sig.c - - experimental change to set_signal_handler: when setting the SIGCHLD - handler, set the SA_RESTART flag so that interruptible system calls - get restarted after a child dies. Fixes bug reported by Tomas - Trnka , but needs further evaluation - -lib/sh/eaccess.c - - eaccess(2) apparently does only half the job: it does not check that - the permission bits on a file actually allow, for instance, execution. - Need to augment with a call to sh_stataccess if eaccess returns - success on FreeBSD. Fixes FreeBSD problem reported by Johan Hattne - - - 3/28 - ---- -parse.y,bashline.c,externs.h - - history_delimiting_chars now takes a const char * as an argument: - the line being added to the history. Changed callers - -parse.y - - bash_add_history should not add a semicolon separator if the current - history entry already ends in a newline. It can introduce syntax - errors (e.g., when it results in a null command before a close brace). - Fixes bug reported by Andreas Schwab - -parse.y - - history_delimiting_chars needs to return a newline instead of a - semicolon if it thinks the current line starts a here document - (if it contains `<<'). Also keeps track of the fact with a new - static variable, LAST_WAS_HEREDOC, so it can return the right - sequence of newlines later for the here-document body. Fixes bug - reported by Andreas Schwab - - 3/29 - ---- -lib/sh/eaccess.c - - if the system has faccessat, sh_eaccess will now use it in - preference to all other options - - 3/30 - ---- -subst.h - - new string_extract and extract_dollar_brace_string flag value: - SX_POSIXEXP, set if the shell is expanding one of the new Posix - pattern removal word expansions - -parser.h - - new definitions for "word expansion state", shared between parse.y - and subst.c - -subst.c - - include parser.h - - 4/9 - --- -builtins/declare.def - - make sure declare_internal calls bind_assoc_variable with newly- - allocated memory for the key argument when using an implicit key - of "0". Bug report and fix from Andreas Schwab - - - 4/14 - ---- -lib/readline/input.c - - restructure the rl_event_hook loop in rl_read_key to call the - event hook after rl_gather_tyi() returns and rl_get_char has - a chance to collect the input. Previous behavior was to call - the event hook before attempting to read input. Problem - reported by Anant Shankar - - 4/15 - ---- -builtins/fc.def - - fc_builtin needs to check whether the calculation of last_hist - leaves hlist[last_hist] == 0, and keep decrementing it until it - leaves a non-null history entry or goes < 0. Currently only - does this if saved_command_line_count > 0, indicating we're - trying to edit a multi-line command. Fixes bug reported by - Roman Rakus - - 4/17 - ---- -subst.c - - new process substitution helper functions: - unlink_fifo - closes a single FD or FIFO - num_fifos - returns number of open FDs or active FIFOs - copy_fifo_list - returns a bitmap of open FDs or active FIFOs - by index into appropriate list (dev_fd_list or fifo_list) - close_new_fifos - take a bitmap saved by copy_fifo_list and - call unlink_fifo on any FD or FIFO open at the time of the - call that is not marked as active in list - -execute_cmd.c - - execute_builtin_or_function: use new framework to close process - substitution FDs or FIFOs created by a shell builtin or shell - function. Fixes bug reported by Charles Duffy - -doc/{bash.1,bashref.texi} - - document 'C and "C constants for printf builtin - - 4/22 - ---- -lib/readline/complete.c - - new function to return screenwidth for use when displaying possible - matches: complete_get_screenwidth; changed uses of _rl_screenwidth - to use complete_get_screenwidth(). - - change complete_get_screenwidth to query (readline-private) - _rl_completion_colums, $COLUMNS, then _rl_screenwidth in that order - - change rl_display_match_list to deal with limit < 0 (which implies - that cols == 0) when _rl_screenwidth > 0 - -lib/readline/bind.c - - new bindable variable: completion-display-width, controls the - number of columns used when displaying completions with new - sv_compwidth function to call when value is set or unset - -lib/readline/doc/{readline.3,rltech.texi} - - documented completion-display-width variable - - 4/23 - ---- -execute_cmd.c - - change execute_in_subshell to reset trap handlers without freeing - the trap strings and set SUBSHELL_RESETTRAP. In line with Austin - Group interp #53 (trap in a subshell). - - ditto for execute_simple_command where it can be determined that - the shell is going to run a builtin or function in a subshell - -trap.c - - new function, get_all_original_signals, retrieves the original - signal disposition for all signals - -trap.h - - extern declaration for get_all_original_signals - -builtins/trap.def - - change showtrap to display signals that are "hard ignored" as - trap commands to ignore them, even though that trap command would - be a no-op. Partial fix for feature request from Siddhesh - Poyarekar - - change trap_builtin to call get_all_original_signals before displaying - traps. This will show inherited ignored signals. Rest of feature - request from Siddhesh Poyarekar - -lib/readline/histexpand.c - - fix history_tokenize_word so that it understands $(...) and the - <(...) and >(...) expansions as a single word - - change history_tokenize_word so that it understands extended shell - globbing patterns as a single word. Code is very similar to - $(...) code above. Bug reported by Rajeev V. Pillai - - - 4/24 - ---- -lib/readline/vi_mode.c - - add checks to rl_vi_char_search to make sure we've already done a - search if the command is `;' or `,', and return immediately if we - have not. Fixes bug reported by Eric Ho - -lib/readline/text.c - - make sure `dir' is in the valid range before searching in - _rl_char_search_internal. Range checks in the code depend on it - being non-zero - - 5/3 - --- -lib/readline/complete.c - - in rl_complete_internal, if show-all-if-ambiguous or - show-all-if-unmodified are set (what_to_do == '!' or '@', - respectively), and the common match prefix is shorter than the - text being completed, inhibit inserting the match. - The guess is that replacing text with a shorter match will not - be wanted - - 5/20 - ---- -lib/sh/unicode.c - - new file, with unicode character conversion-related code. Will be - used to implement \u and \U escapes where appropriate, and for - other unicode-related functions in the future - - 5/21 - ---- -builtins/printf.def - - add code to handle \u and \U escapes in format strings and arguments - processed by the %b format specifier - -lib/sh/strtrans.c - - add code to handle \u and \U escapes as unicode characters, works for - both `echo -e' and $'...' - -doc/{bash.1,bashref.texi} - - document new \u and \U escape sequences for $'...' and echo (printf - defers to the system's man page or Posix) - - 5/24 - ---- -execute_cmd.c - - change execute_disk_command to return a status, instead of just - leaving it in `last_command_exit_value', since the parent's return - value is sometimes used (e.g., when a restricted shell refuses to - run a command with a `/'). Fixes bug reported by David Pitt - - - 5/25 - ---- -bashline.c - - change bash completion functions to save and restore the value of - rl_ignore_some_completions_function, and set it to the bash default - of filename_completion_ignore where appropriate. Fixes bug - reported by Henning Bekel - -variables.c - - new convenience function: find_global_variable (name). Looks for - NAME in the global variables table, skipping any local and - temporary environment variables - -builtins/declare.def - - add new -g option to declare/typeset/local, forces variables to be - created or modified at the global scope when executing inside a - shell function. Requested by many, most recently by - konsolebox@gmail.com - - 5/27 - ---- -test.c - - added new `-v var' unary test operator; returns TRUE if var is set - (i.e., has been assigned a value). Works in both test builtin and - [[ conditional command - -doc/{bash.1,bashref.texi} - - documented new `-v var' unary conditional operator - -tests/test.tests - - added tests for new -v var operator - -builtins/kill.def - - change kill builtin so -PID (pgrp specification) following a - -s sig or -n sig option is not interpreted as a signal specification. - Fixes bug reported by Roman Rakus - -builtins/evalstring.c - - in parse_and_execute, if parse_command() returns non-zero, - indicating a parse error, exit the shell if the conditions require - a posix-mode non-interactive shell to abort (parse error in a `.' - script or eval string). Bash-4.1 only printed a warning. This is - from Austin Group interp 114 - -doc/bashref.texi - - add note to the posix mode section of the texinfo manual noting - the changed behavior for `.' and `eval' - -parse.y - - change time_command_acceptable to allow TIME token to appear after - BANG token (to allow `! time foo', which is supposed to be valid) - - change pipeline_command production to allow multiple instances of - `!' (which toggle inverting the return status) and `time' (which - have no effect) - -execute_cmd.c - - In posix mode, `time' without a following pipeline prints the - elapsed user, system, and real time for the shell and its - children since the shell was invoked. - It's like `times' but obeys the setting of TIMEFORMAT. A future - revision of Posix will require this - -doc/{bashref.texi,bash.1} - - document new posix mode use of `time' - -parse.y - - add production to pipeline_command that permits `!' by itself to - be equivalent to `false' (and, with the changes above, permits - `! !' to be roughly equivalent to `true'). A future revision of - Posix will require this - - 5/28 - ---- -parse.y - - fix \W prompt expansion to use memmove instead of strcpy, since the - source and target strings overlap (though you think it wouldn't - matter, since the overlapping regions are never touched at the same - time). Fixes bug reported by Stéphane Jourdoi - - -parse.y - - Posix interp 217 states that $(( must be parsed first as an - arithmetic expansion, so avoid attempting to parse it as a nested - command substitution. Fixes bug reported by several, most recently - - -subst.c - - change extract_delimited_string to process nested $( as a possible - command substitution, but only if already parsing an arithmetic - expansion. Rest of fix for Posix interp 217 - - change parameter_brace_expand_rhs to make the := expansion operator - perform quote removal and both assign the result to the variable and - return it as the result of the expansion, rather than assign the - value after quote removal but return the value before quote removal. - Posix interp 221 - - introduce new internal quoting flag: Q_DOLBRACE. Denotes a double- - quoted ${...} expansion. In this case, Posix interp 221 requires - that a backslash quoting an embedded `}' be removed, even though it's - not one of the characters marked as special inside double quotes. - Set in parameter_brace_expand, used by expand_word_internal. - -parse.y - - introduce new parsing state, P_DOLBRACE, set when parsing a ${...} - expansion - - set a "dolbrace operator state" in parse_matched_pair to decide - whether the lexer is reading the param, op, or word in - ${paramOPword}. Will be used to decide whether or not to treat - single quotes specially in a double-quoted "${...} - - 5/29 - ---- -parse.y - - change parse_matched_pair so that a single quote appearing in a - double-quoted ${...} expansion is not special unless the expansion - operator is `#[#]' or `%[%]'. Posix interp 221 - -subst.c - - change string_extract_double_quoted so that a single quote appearing - in a double-quoted ${...} expansion is not special unless the - expansion operator is `#[#]' or `%[%]'. Posix interp 221 - -doc/bashref.texi - - document posix-mode effects of Posix interp 221 - - add section describing GNU parallel as requested by Stallman - -lib/readline/complete.c - - broke code that compares filenames read from the file system (and - possibly converted) to words being completed out into a separate - function: complete_fncmp - - augment complete_fncmp to treat hyphen and underscore as equivalent - when comparing filenames if _rl_completion_case_map is set - -lib/readline/rlprivate.h - - new extern declaration for _rl_completion_case_map - -lib/readline/util.c - - change _rl_strnicmp to return the difference between the characters, - like strcasecmp, and not modify the pointers it is passed - - change _rl_stricmp to not modify the pointers it is passed - -lib/readline/bind.c - - new bindable variable, "completion-case-map", toggles value of - _rl_completion_case_map - -lib/readline/doc/{rluser.texi,readline.3} - - document new bindable readline variable "completion-case-map" - -execute_cmd.c - - change execute_function to reset funcnest and jump back to top level - if funcnest exceeds funcnest_max - - use funcnest_max as a max function nesting level, if set to numeric - value greater than 0 (defaults to 0, so inactive) - -variables.c - - new variable FUNCNEST, controls funcnest_max value if set to numeric - value > 0 -sig.c - - reset funcnest to 0 when throw_to_top_level occurs - -doc/{bash.1,bashref.texi} - - document FUNCNEST variable and its effect on function execution - -lib/readline/funmap.c - - add new bindable command names to avoid case-insensitive matching - problems between, for instance, vi-fword and vi-fWord: - - vi-forward-word - vi-forward-bigword - vi-backward-word - vi-backward-bigword - vi-end-word - vi-end-bigword - - Suggested in a different form in 2006 (!) by Servatius Brandt - - -builtins/mapfile.def - - run_callback now takes a new third argument: curline, the line - currently being read and about to be assigned - - the callback function/command now takes an additional argument: - the line to be assigned to the array index. Feature suggested by - Dennis Williamson - -doc/{bash.1,bashref.texi} - - document new additional `line' argument to mapfile callback - - 5/30 - ---- -builtins/printf.def - - add new %(fmt)T format specifier, where FMT is a strftime format. - Argument is number of seconds since the epoch, with -1 meaning - current time (roughly date +%s) and -2 meaning shell start time - (roughly $SECONDS, unless it's been assigned a value or unset). - Fieldwidth and precision are preserved, strftime result is printed - as with %[-][[fieldwidth][.[precision]]]s - -doc/{bash.1,bashref.texi} - - document new %(datefmt)T printf format specifier and special - arguments - -builtins/hash.def - - don't permit programs with slashes to be entered into the hash table - at all, even with the -p option. Inconsistency pointed out by - Jan Schampera - -builtins/shopt.def - - add `compat41' option in preparation for bash-4.2 - - 6/6 - --- -lib/readline/vi_mode.c - - finish restructuring rl_vi_domove and the functions that call it so - it works in callback mode, including numeric arguments. Requested - a long time ago by Bob Rossi - -lib/readline/callback.c - - arrange to call appropriate callback when readline state indicates - RL_STATE_VIMOTION, so vi motion commands like `cw' and `d2w' are - handled in callback mode - -lib/sh/wcswidth.c - - replacement wcswidth implementation - -aclocal.m4 - - add REPLACE_FUNCS(wcswidth) to BASH_CHECK_MULTIBYTE - -execute_cmd.c - - fix select_query and print_index_and_element to compute correct - display width of select list elements in presence of multibyte - characters. Bug reported by Bernd Eggink - -builtins/cd.def - - add posix-mandated -e option; currently ignored in most circumstances - -doc/{bash.1,bashref.texi} - - document new `cd -e' option - - 6/12 - ---- -arrayfunc.c - - change array_value_internal to treat negative subscripts to indexed - arrays, offset from array_max_index(x) + 1, so foo[-1] is the last - element of $foo - -subst.c - - Change verify_substring_values to allow negative length specifications - when using string variables or array members. Negative lengths - mean to return characters from OFFSET until (${#var} - N) for - {var:offset:-N}. Feature requested by Richard Neill - - -doc/{bash.1,bashref.texi} - - document new behavior of negative subscripts to indexed arrays - - document new behavior of negative LENGTH in substring expansion - -configure.in - - change version to bash-4.2-devel - -variables.c - - make sure initialize_shell_variables calls sv_xtracefd if - BASH_XTRACEFD is inherited in the shell environment. Fixes but - reported by - - 6/13 - ---- -lib/readline/complete.c - - change get_y_or_n to always return 1 when in callback mode, so we - don't do a blocking read. Have to wait until readline-7.0 to add - a state so we can use callbacks, since that will change public - interface - - 6/17 - ---- -subst.c - - fix memory leak in parameter_brace_expand: when performing pattern - removal with parameter_brace_remove_pattern, make sure `name' is - freed. Fixes bug reported by oyvindh@dhampir.no - - 6/23 - ---- -{parse.y,subst.c} - - make the ${param//pat/rep}, ${param^pat}, and ${param,pat} expansions - require single quotes and double quotes to match when within double - quotes. This way every expansion except the Posix ones behaves as - bash has always behaved - -subst.c - - change remove_upattern and remove_wpattern to return their first - argument if nothing matches, change callers to allocate memory - appropriately - - change remove_pattern to short-circuit and return copy of PARAM - if remove_wpattern returns its first argument (indicating no match) - rather than convert back to multibyte string, allocating new memory - twice and calling wcsrtombs - - 6/24 - ---- -execute_cmd.c - - add missing initializers for sh_coproc to eliminate a compiler - warning. Patch from Werner Fink - - 6/27 - ---- -parse.y - - add `TIMEIGN' token to handle `time -p -- ...'. Pointed out by - Laszlo Ersek on austin-group list - - 6/28 - ---- -jobs.c - - treat a shell with (subshell_environment&SUBSHELL_PIPE) != 0 like - a command substitution in wait_for and act like we received a - SIGINT if a job we're waiting for dies of SIGINT. Fixes bug - reported by Ilya Basin - - 7/2 - --- -jobs.c - - if fork() fails in make_child, try to reap some dead children before - retrying - -execute_cmd.c - - change execute_pipeline to run the last command of a non-asynchronous - pipeline in the current shell environment if the `lastpipe' shell - option is enabled and job control is not active. Code from - Werner Fink - -parse.y - - Posix says (issue 267) that time is not recognized as a keyword - if the next token begins with a `-' - -doc/{bash.1,bashref.texi} - - changed the descriptions of BASH_SOURCE, BASH_LINENO, and FUNCNAME - as proposed in Ubuntu bug 591677. - - document new `lastpipe' shell option that runs last command of a - pipeline in the current shell environment - - document new posix-mode behavior with `time -p' - - 7/5 - --- -aclocal.m4 - - new autoconf test WEXITSTATUS_OFFSET, bit offset in status word - returned by wait() of the process's exit status - -jobs.[ch] - - change stop_pipeline to return the actual index of the job just - created and added to the jobs table, instead of the current job - - job_exit_status and job_exit_signal are now global functions, with - extern declarations in jobs.h - - append_process: new utility function for use by the lastpipe code, - takes info, creates a PROCESS from them, and adds it to the end of - the passed job id's pipeline. lastpipe code uses it to add a dummy - process for the last command in the pipeline - - freeze_jobs_list: new utility function so rest of shell can freeze - the jobs list. Used by the lastpipe code - -execute_cmd.c - - changes to lastpipe code to make `pipefail' option, $PIPESTATUS, and - $? work correctly. Uses append_process and job_exit_status - - 7/10 - ---- -subst.c - - when performing pattern substitution word expansions, a `&' in the - replacement string is replaced by the text matched by the pattern. - The `&' can be quoted with a backslash to inhibit the expansion. - CURRENTLY DISABLED - - 7/13 - ---- -pcomplib.[ch] - - new member for struct compspec: lcommand. for future use - - 7/15 - ---- -parse.y - - fix problem in parse_comsub where extra space was added to here-doc - delimiter if the first word in the comsub contained a `/'. Fixes - bug reported by Alex Khesin - - 7/20 - ---- -parse.y - - change reserved_word_acceptable to return success if the last two - tokens read were `function WORD'. Allows function definitions like - function good [[ -x foo ]];. Fixes bug reported by Linda Walsh - - -doc/{bash.1,bashref.texi} - - change function definition meta-syntax to make it clearer, rather - than let the text note the optional portions - - 7/24 - ---- -bashhist.c - - change bash_history_inhibit_expansion() to suppress history expansion - for $! parameter expansion. Fixes debian bug #589745 submitted by - Frank Heckenbach - -lib/readline/terminal.c - - change rl_resize_terminal to always fetch the new terminal size and - only force the redisplay if _rl_echoing_p is non-zero. Fixes bug - reported by Balazs Kezes - - 7/25 - ---- -lib/readline/xfree.c - - new file, contains definition of xfree moved from xmalloc.c - - 7/28 - ---- -variables.c - - check suspect return values from bind_variable before trying to use - the returned SHELL_VAR *. Changes to: initialize_shell_variables, - bind_int_variable, FIND_OR_MAKE_VARIABLE. Fixes bug reported by - Roman Rakus - - 7/31 - ---- -lib/readline/rltty.c - - fix rl_prep_terminal and rl_deprep_terminal to use fileno(stdout) - if rl_instream is NULL. Fixes bug reported by Otto Allmendinger - otto.allmendinger@googlemail.com - - 8/2 - --- -lib/sh/casemod.c - - if the passed string is NULL or empty, return it immediately. Fixes - bug reported by Dennis Williamson - -subst.c - - fix pat_subst to cope with the passed string being NULL - -arrayfunc.h - - added flag values for array_value_internal and its callers; converted - array_value_internal `allow_all' parameter into a general flags word - - get_array_value now takes a flags value - - changed array_value internal to use *indp as an index to use if the - AV_USEIND flag is set, rather than recomputing it - -subst.c - - get_var_and_type takes two new parameters: a flags word and an index - that represents an already-computed index for an array reference - (just indexed arrays so far). Index is used and passed to array_value - if flags includes AV_USEIND - - parameter_brace_expand_word takes a new argument: the already- - computed index; returns W_ARRAYIND if word expanded is being used - as an array index - - changed parameter_brace_casemod, parameter_brace_patsub, - parameter_brace_substring, parameter_brace_remove_pattern to take new - flags and index arguments from parameter_brace_expand_word. They - pass the new parameters along to get_var_and_type to use an - already-computed array index if necessary. Fixes bug where array - indexes are computed twice reported by Andrew Benton - - -doc/bash.1,lib/readline/doc/{history.3,hsuser.texi} - - modified description of history event designators to clarify that - all non-absolute event designators are relative to the current - position in the history list. Question raised by Frank - Heckenbach as debian bash bug 590012 - - 8/5 - --- -subst.c - - remove code that does not add a quoted null when the input string - is partially quoted; subsequent word splitting may require it. - Fixes bug reported by Eric Blake - - 8/12 - ---- -lib/glob/gmisc.c - - move match_pattern_wchar and match_pattern_char to new file in - glob library - - new functions: wmatchlen(pat, max) and umatchlen(pat, max), computes - number of characters PAT will match. Returns the number of chars - that will be matched or -1 if the match length is indeterminate - (i.e., contains a `*') - -subst.c - - use umatchlen/wmatchlen in match_upattern/match_wpattern to bound - the number of match attempts in large strings to (usually) one, - depending on match length. Fixes performance problems with - pattern substitution in large strings noted by Yi Yan - . Can be applied to remove_[uw]pattern also - - 8/13 - ---- -bashhist.c - - in maybe_append_history, change check for history_lines_this_session - so that we append the lines to the file if it's equal to the value - returned by where_history(). This means that without this change, - the history won't be appended if all the lines in the history list - were added in the current session since the last time the history - file was read or written. Fixes bug reported by Bruce Korb - - -shell.h,parse.y - - add prompt_string_pointer to the parser_state struct saved and - restored by {save,restore}_parser_state. Fixes both bugs exposed - by bash_completion and completion of open backquotes reported by - Egmont Koblinger - -subst.h - - new flag for skip_to_delim: SD_EXTGLOB. Skip extended globbing - patterns while looking for ending delimiter - -subst.c - - when passed the SD_EXTGLOB flag, skip_to_delim skips over extended - globbing patterns (when extended_glob is set) while looking for a - character in the delimiter set - -pathexp.c - - split_ignorespec: new function to replace calls to extract_colon_unit - in setup_ignore_patterns. uses skip_to_delim with the SD_EXTGLOB - flag to skip over extended globbing patterns in variables like - HISTIGNORE and GLOBIGNORE. Fixes bug reported by Dimitar DIMITROV - and Greg Wooledge - - 8/28 - ---- -lib/readline/rlprivate.h - - add members to search_cxt to save _rl_keymap - - new flag for isearch context: SF_CHGKMAP, set if we changed the - keymap while reading a character for the search string that - translated to a command - -lib/readline/isearch.c - - save current readline keymap in cxt->keymap and cxt->okeymap - in _rl_scxt_alloc - - in _rl_isearch_dispatch, only check for cxt->lastc as a member of - cxt->search_terminators if it's > 0 (i.e., not an isearch opcode) - - 9/3 - --- -support/signames.c - - add Solaris SIGJVM1 and SIGJVM2. Update from Stefan Teleman - - -shell.c - - instead of closing all fds 3-20 at shell startup, just set them to - be close-on-exec. Report from Rainer Mülle - -lib/readline/isearch.c - - in _rl_isearch_dispatch, if the current character maps to ISKMAP, - move to the indicated keymap (using cxt->keymap) and go on to - read another character. Fixes problem reported by Davor - Cubranic - - in _rl_isearch_dispatch, after translating key to possible opcode, - restore _rl_keymap from cxt->okeymap if necessary - - in _rl_isearch_dispatch, use key sequences that map to default - functions that ^G, ^W, and ^Y map to as equivalent to those chars - -lib/readline/complete.c - - new variable, _rl_menu_complete_prefix_first, zero by default - - change menu_complete to display common prefix (matches[0]) first - before cycling through rest of match list if - _rl_menu_complete_prefix_first is non-zero. Suggested by Sami - Pietila - -lib/readline/bind.c - - new bindable readline variable, "menu-complete-display-prefix", - controls setting of _rl_menu_complete_prefix_first - -doc/{bash.1,bashref.texi},lib/readline/doc/{readline.3,rluser.texi} - - added description of menu-complete-display-prefix bindable - readline variable - - 9/17 - ---- -configure.in - - remove AM_PATH_LISPDIR call since we don't use that bash debugger - any more. Suggested by Mike Frysinger - - 10/6 - ---- -findcmd.c - - change executable_file to set errno to EISDIR if the passed name - is a directory - -builtins/exec.def - - change exec_builtin to report appropriate error message if the - file argument is a directory. Noted by Eric Blake - in a message to austin-group - -builtins/source.def - - change source_builtin to make sure the shell exits if the file is - not found when in a non-interactive shell running in posix mode - and source_searches_cwd == 0 (as posix mode makes it by default). - Pointed out in http://thread.gmane.org/gmane.comp.shells.dash/291/focus=392 - by Jilles Tjoelker - -execute_cmd.c - - set executing_command_builtin in execute_builtin if the builtin is - command_builtin. Unwind-protected in execute_function_or_builtin - (like executing_builtin variable). Available for rest of shell - -builtins/{source.def,evalfile.c} - - make sure that non-interactive posix mode shells exit if the file - argument to `.' is not found only if they are not being executed - by the command builtin (executing_command_builtin == 0). This is - how `command' can cancel effects of special builtin exit properties - in the case of `dot file not found' - - 10/13 - ----- -lib/sh/strtrans.c - - pass \c through unchanged if not escaping for `echo -e' and they are - the final two characters in the string - - 10/15 - ----- -subst.c - - extract_dollar_brace_string: fix problem with single quotes - in unquoted ${...} for Posix compliance - - 10/16 - ----- -builtins/exec.def - - catch return value from shell_execve; don't print duplicate error - message if return value is EX_NOTFOUND. Make sure exit status - from exec is 127 if command is not found - -execute_cmd.c - - fix typo (`saved_redirects' should be `saved redirects') in - execute_function_or_builtin `command exec' case. Typo caused - too much of the unwind-protect stack to be discarded - - in same execute_function_or_builtin case, don't discard the - `saved redirects' frame unconditionally; only discard it if - saved_redirects is non-null in the `command exec' case. Fixes - sh -c 'command exec; exit 1' hanging bug uncovered by FreeBSD - sh test cases - - 10/18 - ----- -subst.c - - when in posix mode, shell should not exit if a variable assignment - error (e.g., assigning to readonly variable) occurs preceding a - command that is not a special builtin. Fixes bug uncovered by - FreeBSD sh test cases - - when in posix mode, the ${!?} and ${!#} expansions are not indirect - expansions, but posix word expansions involving the `!' variable - -parse.y - - fix parse_comsub so that it does not skip backslash-newline when - parsing a comment - - 10/19 - ----- -subst.c - - fix parameter_brace_expand so that an attempt to use the % or # - expansions on an unset variable with -u set will cause a non- - interactive shell to abort. Posix change - - fix parameter_brace_expand so that an attempt to use pattern - substitution or case modification expansions on an unset variable - with -u set will cause and unbound variable error and make a - non-interactive shell abort - - change parameter_brace_expand_length to return INTMAX_MIN if a - positional parameter is unset and -u is set - - if parameter_brace_expand_length returns INTMAX_MIN when -u is set, - treat it as an unbound variable error and make a non-interactive - shell abort. Posix change - - change parameter_brace_expand_length to return INTMAX_MIN if an - implicit reference to array[0] is made ${#array} and array[0] is - not set when -u is set - - 10/20 - ----- -builtins/cd.def - - Posix 2008 says that if no matching directories are found in $CDPATH, - use the directory name passed as an operand and go on. Posix change - -doc/bashref.texi - - change Posix mode section with latest additions and removals - - 11/4 - ---- -lib/readline/complete.c - - fix rl_menu_complete and rl_old_menu_complete to keep incrementing - match_list_index by match_list_size as long as it's < 0. Fixes - bug reported by jeenuv@gmail.com - -braces.c - - make mkseq() take intmax_t arguments for sequence start and end - and make sure it's passed intmax_t values. Fixes bug reported by - Pete Gregory - -sig.c - - if termsig_handler is called when terminate_immediately == 1, - assume we're being called as a signal handler and set - history_lines_this_session to 0 to inhibit history file being - written on shell exit. Fixes long-standing bug most recently - observed by Andreas Schwab - - 11/5 - ---- -redir.c - - add_undo_close_redirect now returns int, 0 on success, non-zero on - failure. Currently always succeeds - - new macro REDIRECTION_ERROR to make do_redirection_internal return - value of errno - - change do_redirection_internal to call REDIRECTION_ERROR after - saving file descriptor and make do_redirection_internal return error - if add_undo_redirect or add_undo_close redirect fails. This makes - failure to save a file descriptor a redirection error and the shell - behaves appropriately. Fixes bug reported by Eric Blake - - -bashline.c - - modify bash_forward_shellword to correctly handle quoted strings, - especially if point is in a quoted string when function is invoked. - Fixes bug reported by Daniel Colascione - -configure.in - - change version to 4.2-alpha - - 11/7 - ---- -lib/readline/text.c - - in rl_insert, if we're not in the multibyte code path, don't try to - optimize and insert all of the available typeahead input if we're - reading input from a macro. Fixes bug reported by Andre Majorel - - -lib/readline/text.c - - break out multibyte guts of rl_forward_char into a separate function - _rl_forward_char_internal that does nothing but calculate the new - value of point - - change rl_forward_char to call _rl_forward_char_internal instead of - having equivalent code inline - -lib/readline/rlprivate.h - - new extern declaration for _rl_forward_char_internal - -lib/readline/vi_mode.c - - change _rl_vi_append_forward to call _rl_forward_char_internal to - set rl_point, instead of calling rl_forward_char. When at the end - of the line, rl_forward_char will ring the bell. Fixes debian - bash bug 601042, reported by Alan J. Greenberger - - 11/14 - ----- -subst.c - - fix match_upattern to use correct test to immediately break out of - loop (when potential match length is greater than number of chars - remaining in the string) in MATCH_ANY case - - 11/15 - ----- -subst.c - - include "typemax.h" to make sure we have a definition of INTMAX_MIN - - 11/16 - ----- -lib/sh/unicode.c - - make sure `localconv' isn't declared on machines without iconv - - add stub_charset for systems that don't have locale_charset: looks - up LC_CTYPE, returns everything after last `.', "UTF-8" if the - value is exactly "UTF-8", and "ASCII" otherwise - - 11/20 - ----- -lib/readline/vi_mode.c - - in rl_domove_motion_callback, make sure to use m->key instead of - key, which is not initialized and should not be used. Bug report - from Andreas Schwab - - in rl_vi_domove, make assignment to `m' explicit instead of - relying on evaluation order semantics, since the C standard leaves - them unspecified. Bug report from Andreas Schwab - - - 11/21 - ----- -lib/sh/shquote.c - - sh_single_quote and sh_double_quote now take a const char * - argument. Fixes problem pointed out by Joachim Schmitz - - -externs.h - - change extern declarations for sh_single_quote and sh_double_quote - -lib/sh/strchrnul.c - - make sure that return value is cast to (char *) if we're using a - part of the passed (const char *) argument. Fixes problem pointed - out by Joachim Schmitz - -lib/glob/gmisc.c - - fix a typo that mixed up defines for LPAREN and RPAREN. Bug and - fix from Andreas Schwab - - use WLPAREN and WRPAREN in multibyte character environments - - fixed typos using L'cc' in a non-wide-char environment - -lib/readline/complete.c - - fix rl_filename_completion_function to dequote users_dirname if - there is a filename dequoting function (as well as dirname), since - users_dirname gets tacked back onto the beginning of the possible - completions and then requoted. Bug reported by Andreas Schwab - - - 11/22 - ----- -lib/readline/parens.c - - the `blink-matching-paren' variable should default to off - - 11/23 - ----- -subst.h - - add extern declaration for close_new_fifos() - -lib/sh/fnxform.c - - fix curencoding to return the character past the `.', not a string - beginning with `.' - -lib/sh/unicode.c - - fix stub_charset to do the same cut-off at `@' as curencoding(). - These two functions should be combined - -builtins/printf.def - - document new %(datefmt)T modifier in help text - - 11/24 - ----- -parse.y - - fix `W' case in decode_prompt_string: memmove was copying one too - few bytes and missed the closing NUL. Bug report from Tim Mooney - - - 11/26 - ----- -subst.c - - in expand_word_internal, don't add quoted nulls to partially- - quoted strings if the word will not be subjected to word splitting - later (which will remove the quoted null). Fixes bug reported by - Rocky Bernstein - - 11/28 - ----- -subst.c - - change multibyte case of match_pattern to revert to match_upattern - if neither the pattern nor the string has any multibyte characters - -alias.c - - fix tests of backslash-escaped characters in skipquotes, skipws, - rd_token to check for backslash at EOS and not go past the end. - Fixes debian bug 603696 reported by Tim Small - -include/shmbchar.h - - new file, mbchar.h from gnulib minus the include - -lib/sh/shmbchar.c - - new file, mbchar.c from gnulib with additions - - moved mbstrlen from subst.c to here, changed initialization of mbs - - change mbstrlen to use is_basic to avoid calls to mbrlen for ASCII - chars; code hints from gnulib - - don't copy mbs and mbsbak if we're not calling mbrlen - - 11/29 - ----- -lib/glob/smatch.c - - change xstrmatch to use internal_strmatch() if the pattern and - string don't have any multibyte characters - - 11/30 - ----- -include/shmbutil.h - - change ADVANCE_CHAR and ADVANCE_CHAR_P macros to use is_basic and - only call mbrlen and copy state and state_bak if is_basic returns - false (non-ASCII). Called all over the place. - - change rest of macros except BACKUP_CHAR and BACKUP_CHAR_P in the - same way - - 12/2 - ---- -subst.c - - audit all calls to string_list and make sure caller can handle a - NULL return value. Fixes bug reported by David Rochberg - - -general.h - - change sh_wassign_func_t to take an additional argument: an int - flags word - -subst.c - - change do_word_assignment to take an additional argument to match - wassign_func_t; change callers - - change call to (*assign_func) in expand_word_list_internal to match - new wassign_func_t prototype - - (*assign_func) passes 1 as additional arg if the simple command is - a builtin or function, in which case the assignment to the - temporary env should take effect - -variables.c - - change assign_in_env to take an additional argument to match - wassign_func_t; change callers - - move call to sv_ifs from dispose_temporary_env to - dispose_used_env_vars; we don't need to do it if called from - merge_temporary_env - - 12/3 - ---- -variables.c - - change dispose_temporary_env to maintain a list (tempvar_list) of - variables that need to be handled specially. If a variable that - gets freed by push_temp_var or propagate_temp_var is one of the - variables that the shell handles specially (IFS, LANG, etc.), it's - stored on the list. For each variable in this list, - dispose_temp_var calls stupidly_hack_special_variables. - - assign_in_env calls stupidly_hack_special_variables if flags arg - is non-zero, so variable assignments affect current shell - execution environment if a builtin or function is being executed. - Fixes bug reported by Bruno Haible - - 12/5 - ---- -subst.c - - use mbsmbchar on both string and pattern in match_pattern instead - of strlen and mbstrlen; only go through the strings once - - 12/6 - ---- -lib/readline/kill.c - - in rl_yank_last_arg, only switch directions if the `count' - argument is < 0, not < 1. This makes explicit count arguments of - 0 work as expected. Fixes bug reported by Dennis Williamson - - -doc/bash.1,lib/readline/doc/{readline.3,rluser.texi} - - fix documentation for yank-last-arg to make it clear how the count - argument is set and how second and subsequent calls treat any - numeric argument - -doc/{bash.1,bashref.texi} - - slight changes to the description of test - - change \(bv to `|'; it seems that many `internationalized' versions - of groff don't render that as a vertical bar. Fixes Debian bug - 603805 - - 12/10 - ----- -configure.in - - changed release status to 4.2-beta - - 12/14 - ----- -[bash-4.2-beta frozen] - - 12/18 - ----- -redir.c - - change REDIRECTION_ERROR macro to accept a third argument: an - additional file descriptor to close before returning and error (pass - -1 to do nothing) - - change calls to REDIRECTION_ERROR to close appropriate file - descriptors. Fixes bug reported by Andreas Schwab - - - make sure to close any file descriptors opened for REDIR_VARASSIGN - before returning an error - - 12/19 - ----- -expr.c - - move processing of unary `-' and `+' to exp1 from exp0 to avoid - precedence problems. Fixes bug reported by <12bric@gmail.com> - - 12/22 - ----- -lib/sh/fpurge.c - - updated version from gnulib, inlined gnulib stdio-impl.h - - 12/24 - ----- -doc/bash.1 - - change the description of while and until to use `list-1' and - `list-2', similar to the Posix description. Suggested by - Jeff Haemer - - 12/27 - ----- -execute_cmd.c - - slight changes to execute_command_internal and how it captures the - exit status of (command) and shell control structures with pipes to - avoid multiple variable assignments to last_command_exit_value - - change to execute_simple_command so that parent branches of shells - forked to execute commands in pipelines don't change $? to 0 - (if (pipe_out != NO_PIPE) result = last_command_exit_value). Fixes - bug reported by Damien Nadà - - 12/28 - ----- -configure.in - - changed version to bash-4.2-rc1 - - 1/2/2011 - -------- -lib/readline/complete.c - - fix rl_filename_completion_function to dequote and save users_dirname - before calling any function to transform the directory name passed - to opendir(). Fix from Andreas Schwab - -lib/readline/doc/ - - make sure to note that rl_directory_completion_hook cannot modify - the directory name argument if it returns 0 - -bashline.c - - make sure that bash_directory_completion_hook consistently returns - non-zero whenever it modifies its directory name argument - -lib/readline/terminal.c - - don't bother with the declarations (extern or not) for PC, BS, and - UP if NCURSES_VERSION is defined, since ncurses defines local - versions of those symbols in the library. Fixes bug most recently - reported by Kevin Scott against Mac OS X - -include/filecntl.h - - make sure O_TEXT and O_BINARY are defined to avoid Windows-specific - (or cygwin-specific) code. This and the following changes from - Eric Blake for current cygwin systems - -input.h - - add a B_TEXT flag to note when the underlying file descriptor is - opened in O_TEXT mode - -lib/sh/tmpfile.c - - make sure temporary files are opened in binary mode (O_BINARY) on - systems where it matters - -input.c - - make sure to set the B_TEXT flag if the file descriptor has O_TEXT - in its flags (returned by fcntl) - - change b_fill_buffer to compensate for lseek() and read() returning - different offsets on files opened in O_TEXT mode - - cygwin now is able to lseek on files and set the unbuffered and text - flags appropriately, so can use the general test for a seekable fd - - now that cygwin uses O_TEXT or O_BINARY appropriately, we no longer - have to manually translate \r\n to \n - -redir.c - - remove the Cygwin-1.1 code from here_document_to_fd; cygwin is now - up to version 1.7 and can unlink an open file descriptor - - make sure temporary files used for here documents are opened in - binary mode (O_BINARY) on systems where it matters - -execute_cmd.c,parse.y - - make sure error messages use all printable characters in filenames - and strings - -{builtins/evalfile,shell,subst}.c - - remove cygwin-specific calls to setmode to force file descriptors - into text mode, since we're using text or binary mode according to - the mode of the mount point - -execute_cmd.c - - when creating pipes and making them stdin and stdout, make sure to - tell stdio that the mode of the underlying file descriptor may have - changed from text to binary - -subst.c - - when creating pipes for command substitution, make sure to - tell stdio that the mode of the underlying file descriptor may have - changed from text to binary - - 1/3 - --- -doc/{bash.1,bashref.texi} - - changes to the readonly documentation suggested by Jan Schampera - - - 1/4 - --- -builtins/read.def - - change bind_read_variable to consistently return NULL if there is some - kind of variable assignment error (e.g., assigning to a readonly or - noassign var) - - change read builtin to only call stupidly_hack_special_variables if - bind_read_variable returns non-NULL - - change read_builtin to return EXECUTION_FAILURE if there is an - assignment error (e.g., assigning to a readonly or noassign var). - Fixes bug reported by Jan Schampera - - 1/5 - --- -builtins/{help.def,common.c} - - change uses of a builtin's `short_doc' member to go through gettext - for possible translation before being displayed. Suggestion from - - - 1/6 - --- -shell.h - - new exit status define: EX_MISCERROR (2) - -builtins/getopts.def - - change getopts_bind_variable to return error if an attempt is made - to assign to a variable with the `noassign' attribute - - change getopts_bind_variable to return EX_MISCERROR if attempt is - made to assign to readonly or noassign variable - -builtins/cd.def - - change setpwd to return an int and return failure when PWD is - readonly; success otherwise - - change bindpwd to return failure if setpwd returns EXECUTION_FAILURE. - Inspired by message from Eric Blake - - change pwd builtin to return failure if PWD is readonly (and setpwd - returns EXECUTION_FAILURE) - - 1/8 - --- -lib/sh/eaccess.c - - on FreeBSD and Solaris, check the result of access(2) with mode X_OK - for root by checking sh_stataccess(). Same code as was added to - check result of eaccess(). Fixes Solaris 11 problem reported by - - - 1/10 - ---- -builtins/set.def - - add description of `--' to help text - -[bash-4.2-rc1 released] - - 1/14 - ---- -lib/readline/readline.h - - fix/update description of rl_directory_rewrite_hook - -lib/readline/complete.c - - if there are no directory rewrite or completion hooks, set dirname - to a duplicate copy of users_dirname instead of calling the - dequoting function again - -bashline.c - - use rl_directory_rewrite_hook instead of rl_directory_completion_hook - to avoid changing the directory name the user typed, other than - dequoting it. Fixes bug introduced by changes to directory - completion hook, pointed out first by William Bader - - - 1/16 - ---- -lib/sh/strftime.c - - portability and other (int->long) updates from Aharon Robbins - - -configure.in - - change release level to rc2 - - 1/17 - ---- -execute_cmd.c - - short-circuit select builtin if read_builtin returns anything but - EXECUTION_SUCCESS, not just EXECUTION_FAILURE. Fixes bug reported - by Pierre Gaston - - 1/19 - ---- -execute_cmd.c - - change execute_simple_command to save and restore the values of - executing_builtin and executing_command_builtin before discarding - the unwind-protect frame. Bug and fix from Werner Fink - - - 1/24 - ---- -variables.c - - change brand to set rseed to a known, constant value if it's 0, - so the sequence is known. Fixes issue reported by Olivier - Mehani - - 2/2 - --- -braces.c - - make sure to pass an `int' argument to asprintf in mkseq. Fixes - bug reported by Mike Frysinger - - 2/5 - --- -lib/glob/gmisc.c - - fix wmatchlen and umatchlen to initialize all state variables. Fix - from Andreas Schwab - -jobs.c - - change wait_for to call restore_sigint_handler right after exiting - the wait loop, instead of right before function returns. Reduces - the window for a SIGINT to be lost because a child does not exit - due to SIGINT - - 2/7 - --- -configure.in - - changed release status to `release' - - 2/9 - --- -execute_cmd.c - - make sure some variables are declared as volatile if necessary. Bug - report and fix from Eric Blake - -[bash-4.2 frozen] - - 2/11 - ---- -print_cmd.c - - in indirection_level_string, change to simpler test of result of - MBLEN (< 0 instead of MB_INVALIDCH) - - 2/14 - ---- -[bash-4.2 released] - - 2/15 - ---- -lib/glob/gmisc.c - - fix wmatchlen and umatchlen to avoid going past the end of the - string on an incomplete bracket expression that ends with a - NUL. Partial fix for bug reported by Clark Wang - - 2/16 - ---- -subst.h - - new string extract flag value: SX_WORD. Used when calling - extract_dollar_brace_string to skip over the word in - ${param op word} from parameter_brace_expand - -subst.c - - change parameter_brace_expand to add SX_WORD to flags passed to - extract_dollar_brace_string - - change parameter_brace_expand to use SX_POSIXEXP for all non-posix - word expansion operators that treat single quotes as special, not - just % and # - - change extract_dollar_brace_string to initialize dolbrace_state to - DOLBRACE_WORD if SX_WORD flag supplied and we shouldn't use - DOLBRACE_QUOTE. Fixes bug reported by Juergen Daubert - -doc/{bash.1,bashref.texi} - - document the exact expansions here strings undergo - - 2/17 - ---- -lib/readline/vi_mode.c - - make sure that `dd', `cc', and `yy' call vidomove_dispatch from - rl_domove_read_callback. Fixes bug reported by Clark Wang - - -lib/readline/callback.c - - make sure _rl_internal_char_cleanup is called after the - vi-motion callbacks (rl_vi_domove_callback) in rl_callback_read_char. - Companion to above fix - -doc/{bash.1,bashref.texi} - - make sure that the text describing the rhs of the == and =~ - operators to [[ states that only the quoted portion of the pattern - is matched as a string - - 2/18 - ---- -lib/glob/gmisc.c - - better fix for umatchlen/wmatchlen: keep track of the number of - characters in a bracket expression as the value to increase - matchlen by if the bracket expression is not well-formed. Fixes - bug reported by Clark Wang - -subst.c - - change expand_string_for_rhs so that it sets the W_NOSPLIT2 flag - in the word flags. We will not perform word splitting or quote - removal on the result, so we do not want to add quoted nulls if - we see "" or ''. Fixes bug reported by Mike Frysinger - - - 2/19 - ---- -variables.c - - new function, int chkexport(name), checks whether variable NAME is - exported and remakes the export environment if necessary. Returns - 1 if NAME is exported and 0 if not - - call chkexport(name) to get tzset to look at the right variable in - the environment when modifying TZ in sv_tz. Don't call tzset if - chkexport doesn't indicate that the variable is exported - -variables.h - - new extern declaration for chkexport - - -{parse.y,builtins/printf.def} - - call sv_tz before calling localtime() when formatting time strings - in prompt strings or using printf. Fixes bug reported by - Dennis Williamson - -execute_cmd.c - - modify fix of 2/9 to add casts when those variables are passed to - functions; some compilers throw errors instead of warnings. Report - and fix from Joachim Schmitz - -support/shobj-conf - - add a stanza for nsk on the Tandem from Joachim Schmitz - - -{shell,lib/readline/shell}.c - - Tandem systems should use getpwnam (getlogin()); for some reason - they don't do well with using getuid(). Fix from Joachim Schmitz - - - 3/1 - --- -variables.c - - make sure that the return value from find_variable is non-null - before trying to use it in chkexport. Fixes bug reported by - Evangelos Foutras - - 3/3 - --- -parse.y - - when adding $$ to the current token buffer in read_token_word(), - don't xmalloc a buffer for two characters and then strcpy it, just - copy the characters directly into the token buffer. Fix from - Michael Whitten - -execute_cmd.c - - fix expand_word_unsplit to add the W_NOSPLIT2 flag to the word to - be expanded, so "" doesn't add CTLNUL. Similar to fix of 2/18 to - expand_string_for_rhs. Fixes bug reported by Nathanael D. Noblet - and Matthias Klose - -parse.y - - fix extended_glob case of read_token_word to allocate an extra - space in the buffer for the next character read after the extended - glob specification if it's a CTLESC or CTLNUL. Report and fix from - Michael Witten - - fix shell expansions case of read_token_word to allocate an extra - space in the buffer for the next character read after the shell - expansion if it's a CTLESC or CTLNUL. Report and fix from - Michael Witten - - TENTATIVE: fix read_token_word to reduce the amount of buffer space - required to hold the translated and double-quoted value of $"..." - strings. Report and fix from Michael Witten - - change code around got_character and got_escaped_character labels to - make sure that we call RESIZE_MALLOCED_BUFFER before adding the - CTLESC before a CTLESC or CTLNUL, and before adding the character if - we're not adding a CTLESC. Report and fix from - Michael Witten - -subst.c - - new param flags value, PF_ASSIGNRHS, mirrors W_ASSIGNRHS, noting that - parameter expansion is on rhs of assignment statement. That inhibits - word splitting - - change param_expand to call string_list_dollar_at with quoted == 1 - if PF_ASSIGNRHS is set, so it will quote IFS characters in the - positional parameter before separating them with the first char of - $IFS. This keeps the rhs from being split inappropriately. Fixes - bug reported by Andres Perera - - 3/4 - --- -lib/readline/bind.c - - add a missing free of `names' in rl_function_dumper. Bug report - and fix from Michael Snyder - - 3/5 - --- -lib/readline/rltty.c - - change rl_deprep_terminal so it uses fileno (stdin) for the tty fd - if rl_instream is not set, like rl_prep_terminal - - 3/6 - --- -lib/readline/display.c - - fix rl_message to use a dynamically-allocated buffer instead of a - fixed-size buffer of 128 chars for the `local message prompt'. Bug - report and fix from Micah Cowan - - 3/7 - --- -jobs.c - - add sentinel to wait_sigint_handler so it only sets wait_sigint_received - if waiting_for_child is non-zero; otherwise, it restores the old - SIGINT handler and sends itself the SIGINT - - set waiting_for_child around the calls to waitchld that use it to - synchronously wait for a process - - change logic that decides whether or not the child process blocked - or handled SIGINT based on whether or not waitpid returns -1/EINTR - and the shell receives a SIGINT and the child does not exit. If - the child later exits due to SIGINT, cancel the assumoption that it - was handled - - instead of testing whether or not the child exited due to SIGINT - when deciding whether the shell should act on a SIGINT it received - while waiting, test whether or not we think the child caught - SIGINT. If it did, we let it go (unless the shell has it trapped); - if it did not catch it, the shell acts on the SIGINT. Fix from - Linus Torvalds , bug report originally - from Oleg Nesterov - - 3/8 - --- -shell.c - - initialize no_line_editing to 1 if READLINE is not defined -- we - can't have line editing without readline - - 3/12 - ---- -lib/readline/signals.c - - add SIGHUP to the set of signals readline handles - -lib/readline/doc/rltech.texi - - document that SIGHUP is now part of the set of signals readline - handles - -lib/readline/input.c - - if _rl_caught_signal indicates that read() was interrupted by a - SIGHUP or SIGTERM, return READERR or EOF as appropriate - - call rl_event_hook, if it's set, if call to read in rl_getc - returns -1/EINTR. If rl_event_hook doesn't do anything, this - continues the loop as before. This handles the other fatal - signals - -execute_cmd.c - - add a couple of QUIT; calls to execute_disk_command and - execute_simple_command to improve responsiveness to interrupts - and fatal signals - -input.c - - rearrange getc_with_restart so that the return values from read() - are handled right - -parse.y - - don't need to set terminate_immediately in yy_stream_get, since - getc_with_restart checks for terminating signals itself - - since readline returns READERR on SIGHUP or SIGTERM, don't need - to set terminate_immediately. Still doesn't handle other - signals well -- will have to check that some more - -bashline.c - - new function, bash_event_hook, for rl_event_hook. Just checks for - terminating signals and acts on them using CHECK_TERMSIG. - - set rl_event_hook to bash_event_hook - -builtins/read.def - - take out setting terminate_immediately; add calls to CHECK_TERMSIG - after read calls - -doc/{bash.1,bashref.texi} - - move the text describing the effect of negative subscripts used to - reference indexed array elements to the paragraphs describing - ${parameter[subscript]}, since that's where they are implemented. - Pointed out by Christopher F. A. Johnson - -arrayfunc.[ch],subst.c - - array_expand_index now takes a new first argument: a SHELL_VAR * - of the array variable being subscripted. Can be used later to fully - implement negative subscripts - - 3/14 - ---- -lib/glob/glob.c - - fix mbskipname to not turn the directory entry name into a wide char - string if the conversion of the pattern to a wide char string fails - - fix mbskipname to call skipname if either the pattern or the filename - can't be converted into a wide-char string - -lib/glob/xmbsrtowcs.c - - fix xdupmbstowcs2 to handle return value of 0 from mbsnrtowcs and - short-circuit with failure in that case. Fixes bug reported by - Roman Rakus - - 3/15 - ---- -bashline.c - - new variable, bash_filename_quote_characters to store the value - assigned to rl_filename_quote_characters so it can be restored - if changed. - - change bashline_reset and attempt_shell_completion to restore - rl_filename_quote_characters if not set to default - - 3/22 - ---- -lib/glob/glob.c - - wdequote_pathname falls back to udequote_pathname if xdupmbstowcs - fails to convert the pathname to a wide-character string - -lib/glob/xmbsrtowcs.c - - xdupmbstowcs2: change to fix problem with leading '\\' (results in - nms == 0, which causes it to short-circuit with failure right - away). Fixes bug pointed out by Werner Fink - - xdupmbstowcs2: compensate for mbsnrtowcs returning 0 by taking the - next single-byte character and going on - - xdupmbstowcs2: change memory allocation to increase by WSBUF_INC - bytes; try to avoid calls to realloc (even if they don't actually - result in more memory being allocated) - - 3/24 - ---- -doc/{bash.1,bashref.texi} - - slightly modify BASH_SUBSHELL description based on complaint from - Sam Liddicott - - 3/25 - ---- -trap.c - - change free_trap_strings to not call free_trap_string for signals - that are being ignored, like reset_or_restore_signal_handlers. - Fixes bug reported by Satoshi Takahashi - - 3/26 - ---- -lib/readline/rltypedefs.h - - remove old Function/VFunction/CPFunction/CPPFunction typedefs as - suggested by Tom Tromey - -lib/readline/rlstdc.h - - move defines for USE_VARARGS/PREFER_STDARG/PREFER_VARARGS from - config.h.in to here because declaration of rl_message in - readline.h uses the defines. This makes it hard for another packages - to use after the header files are installed, since config.h is not - one of the installed files. Suggested by Tom Tromey - - - 3/27 - ---- -print_cmd.c - - change indirection_string from a static buffer to a dynamic one - managed by indirection_level_string(), so we don't end up truncating - PS4. Suggested by Dennis Williamson - -lib/readline/shell.c - - change sh_set_lines_and_columns to use static buffers instead of - allocating the buffers to pass to setenv/putenv - -lib/readline/terminal.c - - change _rl_get_screen_size to not call sh_set_lines_and_columns if - ignore_env == 0 - - _rl_sigwinch_resize_terminal: new function to just retrieve terminal - size, ignoring environment - -lib/readline/rlprivate.h - - new external declaration for _rl_sigwinch_resize_terminal() (currently - unused) - -lib/readline/signals.c - - rl_sigwinch_handler: set _rl_caught_signal to SIGWINCH - - rl_sigwinch_handler: don't immediately call rl_resize_terminal; just - leave _rl_caught_signal set for RL_CHECK_SIGNALS to handle - - _rl_signal_handler: call rl_resize_terminal if sig == SIGWINCH. - Should fix hang when sending multiple repeated SIGWINCH reported by - Henning Bekel - - 3/29 - ---- -lib/sh/snprintf.c - - include math.h for any defines for isinf/isnan - - use code from gnulib documentation to implement isinf/isnan if they - are not defined - -configure.in - - don't check for isinf or isnan; c99 says they're macros anyway - -config.h.in - - remove defines for ISINF_IN_LIBC and ISNAN_IN_LIBC, no longer used - by snprintf.c - - 4/2 - --- -braces.c - - brace_gobbler: fix to understand double-quoted command substitution, - since the shell understands unquoted comsubs. Fixes bug reported - by Michael Whitten - -lib/readline/display.c - - include on MDOS - - get and set screen size using DJGPP-specific calls on MSDOS - - move cursor up clear screen using DJGPP-specific calls - - don't call tputs on DJGPP; there is no good terminfo support - -lib/readline/terminal.c - - include on MDOS - - get and set screen size using DJGPP-specific calls on MSDOS - - use DJGPP-specific initialization on MSDOS, zeroing all the - _rl_term_* variables - - don't call tputs on DJGPP; there is no good terminfo support - DJGPP support from Eli Zaretskii - - 4/6 - --- - -config-top.h - - change DEFAULT_PATH_VALUE to something more useful and modern - - 4/8 - --- -tests/printf2.sub - - make sure LC_ALL and LC_CTYPE are set so LANG assignment takes effect. - Reported by Cedric Arbogast - - 4/11 - ---- -include/chartypes.h - - fix a couple of dicey defines (though ones that don't cause any - compiler warnings) in IN_CTYPE_DOMAIN - -doc/{bashref.texi,bash.1} - - add note referring to duplicating file descriptors in sections - describing redirecting stdout and stderr and appending to stdout - and stderr. Suggested by Matthew Dinger - -pcomplete.c - - it_init_helptopics: new function to support completing on help topics, - not just builtins - - it_helptopics: new programmable completion list of help topics - - build list of helptopic completions in gen_action_completions on - demand - -pcomplete.h - - new extern declaration for it_helptopics - -builtins/complete.def - - the `helptopic' action now maps to CA_HELPTOPIC intead of CA_BUILTIN, - since there are more help topics than just builtins. Suggested by - Clark Wang - - 4/12 - ---- -print_cmd.c - - fix print_arith_for_command to add a call to PRINT_DEFERRED_HEREDOCS - before ending the body of the command, so heredocs get attached to - the right command instead of to the loop. From gentoo bug 363371 - http://bugs.gentoo.org/show_bug.cgi?id=363371 - -execute_cmd.c - - change coproc_pidchk to unset the appropriate shell variables when - the (currently single) known coproc pid terminates - - cleanup and new functions to fully support multiple coprocesses when - and if I decide to go there - - 4/13 - ---- -print_cmd.c - - fix print_group_command to add a call to PRINT_DEFERRED_HEREDOCS - after call to make_command_string_internal before printing closing - `}' - - fix make_command_string_internal to add a call to - PRINT_DEFERRED_HEREDOCS after recursive call to - make_command_string_internal in case cm_subshell before printing - closing `)' - - 4/14 - ---- -print_cmd.c - - change overlapping strcpy in named_function_string to memmove - -sig.h - - UNBLOCK_SIGNAL: convenience define, same as UNBLOCK_CHILD, just - restores an old signal mask - -trap.c - - set_signal: instead of setting the signal handler to SIG_IGN while - installing the new trap handler, block the signal and unblock it - after the new handler is installed. Fixes bug reported by Roman - Rakus - - 4/15 - ---- -doc/{bash.1,bashref.texi} - - make it clear that enabling monitor mode means that all jobs run in - separate process groups - - 4/18 - ---- -builtins/fc.def - - update fix of 4/15/2010 to not take saved_command_line_count into - account when stepping down the history list to make sure that - last_hist indexes something that is valid. Fixes bug reported by - - - 4/19 - ---- -builtins/fc.def - - fc_gethnum: make sure the calculation to decide the last history - entry is exactly the same as fc_builtin. Fixes bug uncovered by - fix of 4/18 to stop seg fault - - 4/22 - ---- -lib/readline/terminal.c - - change _rl_enable_meta_key to set a flag indicating that it sent the - enable-meta sequence - - _rl_disable_meta_key: new function to turn off meta mode after we - turned it on with _rl_enable_meta_key - -lib/readline/rlprivate.h - - extern declaration for _rl_disable_meta_key - -configure.in - - if not cross-compiling, set CFLAGS_FOR_BUILD from any CFLAGS inherited - from the environment. Fixes HP/UX build problem reported by - "Daniel Richard G." - - 4/26 - ---- -config-top.h - - define MULTIPLE_COPROCS to 0 so the code is still disabled but easy - to enable via configure option or editing this file - - 4/29 - ---- -lib/sh/eaccess.c - - freebsd provides faccessat, with the same misfeature as their eaccess - and access implementations (X_OK returns true for uid==0 regardless - of the actual file permissions), so reorganize code to check the - file permissions as with eaccess. Report and fix from Johan Hattne - - - 5/2 - --- -doc/{bash.1,bashref.texi} - - add forward reference to `Pattern Matching' from `Pathname - Expansion', suggested by Greg Wooledge - - 5/5 - --- -pcomplib.c - - the bash_completion project now distributes over 200 completions - for various programs, with no end in sight, so increase the value - of COMPLETE_HASH_BUCKETS from 32 to 128 - -pathexp.c - - quote_string_for_globbing: make sure CTLESC quoting CTLESC is - translated into \ even if the flags include QGLOB_REGEXP. - We don't want to process the second CTLESC as a quote character. - Fixes bug reported by Shawn Bohrer - - 5/6 - --- -builtins/printf.def - - change PRETURN to not call fflush if ferror(stdout) is true - - if a call to one of the stdio functions or printstr leaves - ferror(stdout) true, and PRETURN is going to be called, let PRETURN - print the error message rather than doubling up the messages. Fixes - problem reported by Roman Rakus - - 5/9 - --- -doc/{bash.1,bashref.texi} - - add note to the effect that lists inside compound command can be - terminated by newlines as well as semicolons. Suggested by - Roman Byshko - - 5/10 - ---- -subst.c - - remove_quoted_nulls: fix problem that caused it to skip over the - character after a CTLNUL, which had the effect of skipping every - other of a series of CTLNULs. Fixes bug reported by - Marten Wikstrom - - 5/11 - ---- -subst.c - - extract_process_subst: add SX_COMMAND flag to call to - extract_delimited_string, since we're expanding the same sort of - command as command substitution. Fixes bug reported in Ubuntu - bug 779848 - - 5/12 - ---- -configure.in - - set the prefer_shared and prefer_static variables appropriately - depending on the value of $opt_static_link - -aclocal.m4 - - AC_LIB_LINKFLAGS_BODY: change to not prefer shared versions of the - libraries it's searching for if the prefer_shared variable is "no". - Fixes problem reported by Cedric Arbogast - - 5/13 - ---- -lib/readline/readline.c - - _rl_internal_teardown: add call to _rl_disable_meta_key to make the - meta key active only for the duration of the call to readline() - - _rl_internal_setup: move call to _rl_enable_meta_key here from - readline_initialize_everything so the meta key is active only for - the duration of the call to readline(). Suggestion from Miroslav - Lichvar - -builtins/help.def - - help_builtin: change strncmp to strcmp so that `help read' no longer - matches `readonly'. Suggested by Clark Wang - -config.h.in - - add define for GLIBC21, checked using jm_GLIBC21 as part of the tests - for libintl - -lib/malloc/malloc.c - - internal_free: don't use the cached value of memtop when deciding - whether or not to adjust the break and give memory back to the kernel - when using the GNU C library, since glibc uses sbrk for its own - internal purposes. From Debian bug 614815, reported by Samuel - Thibault - -aclocal.m4 - - BASH_STRUCT_WEXITSTATUS_OFFSET: change AC_RUN_IFELSE to AC_TRY_RUN - to avoid warning about not using AC_LANG_SOURCE - - 5/14 - ---- -bashline.[ch] - - two new functions, bashline_set_event_hook and bashline_reset_event_hook, - to set rl_event_hook to bash_event_hook and back to NULL, respectively - - don't set rl_event_hook unconditionally - -sig.c - - termsig_sighandler: if the shell is currently interactive and - readline is active, call bashline_set_event_hook to cause - termsig_handler to be called via bash_event_hook when the shell - returns from the signal handler - - 5/15 - ---- -lib/readline/display.c - - _rl_col_width: Mac OS X has a bug in wcwidth: it does not return 0 - for UTF-8 combining characters. Added workaround dependent on - MACOSX. Fixes problem pointed out by Thomas De Contes - - - 5/16 - ---- -lib/readline/rlmbutil.h - - WCWIDTH: wrapper for wcwidth that returns 0 for Unicode combining - characters on systems where wcwidth is broken (e.g., Mac OS X). - -lib/readline/{complete,display,mbutil}.c - - use WCWIDTH instead of wcwidth - - 5/17 - ---- -lib/readline/display.c - - update_line: after computing ofd and nfd, see whether the next - character in ofd is a zero-width combining character. If it is, - back ofd and nfd up one, so the base characters no longer compare - as equivalent. Fixes problem reported by Keith Winstein - - -lib/readline/nls.c - - _rl_utf8locale: new flag variable, set to non-zero if the current - locale is UTF-8 - - utf8locale(): new function, returns 1 if the passed lspec (or the - current locale) indicates that the locale is UTF-8. Called from - _rl_init_eightbit - -lib/readline/rlprivate.h - - extern declaration for _rl_utf8locale - -locale.c - - locale_utf8locale: new flag variable, set to non-zero if the current - locale is UTF-8 (currently unused) - - locale_isutf8(): new function, returns 1 if the passed lspec (or the - current locale) indicates that the locale is UTF-8. Should be called - whenever the locale or LC_CTYPE value is modified - -aclocal.m4 - - BASH_WCWIDTH_BROKEN: new test for whether or not wcwidth returns - zero-width characters like unicode combining characters as having - display length 1; define WCWIDTH_BROKEN in this case - -config.h.in - - WCWIDTH_BROKEN: new define - -lib/readline/rlmbutil.h - - change WCWIDTH macro to use _rl_utf8locale and the full range of - Unicode combining characters (U+0300-U+036F) - - 5/19 - ---- -lib/readline/rlprivate.h - - _rl_search_context: new member, prevc, will hold character read - prior to lastc - -lib/readline/isearch.c - - _rl_isearch_dispatch: if the character causes us to index into - another keymap, save that character in cxt->prevc - - _rl_isearch_dispatch: if we index into another keymap, but don't - find a function that's special to i-search, and the character that - caused us to index into that keymap would have terminated the - search, push back cxt->prevc and cxt->lastc to make it appear as - if `prevc' terminated the search, and execute lastc as a command. - We have to push prevc back so we index into the same keymap before - we read lastc. Fixes bug report from Davor Cubranic - - - 5/20 - ---- -expr.c - - expr_bind_variable: pay attention to the return value from - bind_variable and check whether or not we should error out due to - a readonly or noassign variable. Fixes bug reported by Eric - Blake - - 5/26 - ---- - -lib/readline/search.c - - include histlib.h for ANCHORED_SEARCH defines - - rl_history_search_flags: new variable, holds ANCHORED_SEARCH flag for - the duration of a history search - - rl_history_search_reinit: takes a new flags variable, defines whether - or not the search is anchored; assigned to rl_history_search_flags - - rl_history_serarch_reinit: if ANCHORED_SEARCH flag passed, add ^ to - beginning of search string; otherwise search string is unmodified - - rl_history_search_internal: set rl_point appropriately based on - whether or not rl_history_search_flags includes ANCHORED_SEARCH - - rl_history_substr_search_forward: new function, for non-anchored - substring search forward through history for string of characters - preceding rl_point - - rl_history_substr_search_backward: new function, for non-anchored - substring search backward through history for string of characters - preceding rl_point. Original code from Niraj Kulkarni - - -lib/readline/readline.h - - extern declarations for rl_history_substr_search_{for,back}ward - -lib/readline/funmap.c - - history-substring-search-forward: new bindable command, invokes - rl_history_substr_search_forward - - history-substring-search-backward: new bindable command, invokes - rl_history_substr_search_backward - -lib/readline/doc/{rluser.texi,readline.3} - - document history-substring-search-forward and - history-substring-search-backward - - 5/27 - ---- -{nojobs,jobs}.c - - add support for DONT_REPORT_SIGTERM so that the shell doesn't print - a message when a job exits due to SIGTERM since that's the default - signal sent by the kill builtin. Suggested by Marc Herbert - - -config-top.h - - DONT_REPORT_SIGTERM: new user-modifiable setting. Commented out - by default - - 5/28 - ---- -lib/readline/bind.c - - _rl_skip_to_delim: skip to a closing double quote or other delimiter, - allowing backslash to quote any character, including the delimiter - - rl_parse_and_bind: call _rl_skip_to_delim instead of using inline - code - - rl_parse_and_bind: allow quoted strings as the values of string - variables. Variable values without double quotes have trailing - whitespace removed (which still allows embedded whitespace, for - better or worse). Fixes problem with string variables not matching - in `set' command if values happen to have trailing spaces or tabs - (debian bash bug #602762), but introduces slight incompatibility. - - 5/29 - ---- -doc/{bash.1,bashref.texi} - - clarify unset description to specify that without options, a - variable, then a shell function if there is no variable by that - name, is unset. Fixes discrepancy reported by Mu Qiao - - - 6/4 - ---- -doc/{bash.1,bashref.texi} - - clarify description of LINES and COLUMNS (and checkwinsize shopt - option) to make it clear that only interactive shells set a - handler for SIGWINCH and update LINES and COLUMNS. Original - report submitted by Jonathan Nieder - -arrayfunc.c - - expand_compound_array_assignment: defer expansion of words between - parens when performing compound assignmnt to an associative array - variable - - assign_compound_array_list: perform the same expansions when doing - a compound array assignment to an associative array variable as - when doing a straight array index assignment. The idea is that - foo=( [ind1]=bar [ind2]=quux) - is the same as - foo[ind1]=bar ; foo[ind2]=quux - - This fixes problems with double-expansion and quote removal being - performed on the array indices - - 6/13 - ---- -doc/{bash.1,bashref.texi} - - Add a little text to make it clear that the locale determines how - range expressions in glob patterns are handled. - - - 6/21 - ---- -builtins/read.def - - display a message and return error status if -a is used with an - existing associative array. Fixes bug reported by Curtis Doty - - - 6/24 - ---- -{jobs,nojobs}.c - - non-interactive shells now react to the setting of checkwinsize - and set LINES and COLUMNS after a foreground job exits. From a - suggestion by Leslie Rhorer - -doc/{bash.1,bashref.texi} - - checkwinsize: remove language saying that only interactive shells - check the window size after each command - -lib/readline/histfile.c - - history_backupfile: new file, creates a backup history file name - given a filename (appending `-') - - history_do_write: when overwriting the history file, back it up - before writing. Restore backup file on a write error. Suggested - by chkno@chkno.net - -bashline.c - - find_cmd_name: two new arguments, return the start and end of the - actual text string used to find the command name, without taking - whitespace into account - - attempt_shell_completion: small changes to make sure that completion - attempted at the beginning of a non-empty line does not find a - programmable completion, even if the command name starts at point - - attempt_shell_completion: small change to make sure that completion - does not find a progcomp when in whitespace before the command - name - - attempt_shell_completion: small change to make sure that completion - does not find a progcomp when point is at the first character of a - command name, even when there is leading whitespace (similar to - above). Fixes problems noted by Ville Skytta - -subst.c - - brace_expand_word_list: since the individual strings in the strvec - returned by brace_expand are already allocated, don't copy them to - newly-allocated memory when building the WORD_LIST, just use them - intact - -locale.c - - locale_mb_cur_max: cache value of MB_CUR_MAX when we set or change - the locale to avoid a function call every time we need to read it - -shell.h - - new struct to save shell_input_line and associated variables: - shell_input_line_state_t - - add members of sh_parser_state_t to save and restore token and the - size of the token buffer - -parse.y - - {save,restore}_input_line_state: new functions to save and restore - shell_input_line and associated variables - - {save,restore}_parser_state: add code to save and restore the token - and token buffer size - - xparse_dolparen: call save_ and restore_input_line_state to avoid - problems with overwriting shell_input_line when we recursively - call the parser to parse a command substitution. Fixes bug - reported by Rui Santos - -include/shmbutil.h - - use locale_mb_cur_max instead of MB_CUR_MAX in ADVANCE_CHAR and - similar macros - -lib/glob/smatch.c - - rangecmp,rangecmp_wc: change to take an additional argument, which - forces the use of strcoll/wscoll when non-zero. If it's 0, a new - variable `glob_asciirange' controls whether or not we use strcoll/ - wscoll. If it's non-zero, we use straight C-locale-like ordering. - Suggested by Aharon Robbins - - 6/30 - ---- -execute_cmd.c - - execute_pipeline: make sure the lastpipe code is protected by - #ifdef JOB_CONTROL. Fixes problem reported by Thomas Cort - - - 7/2 - --- -lib/readline/complete.c - - EXPERIMENTAL: remove setting of _rl_interrupt_immediately around - completion functions that touch the file system. Idea from Jan - Kratochvil and the GDB development - team - -lib/readline/signals.c - - rl_signal_handler: if we're in callback mode, don't interrupt - immediately on a SIGWINCH - - 7/3 - --- -bashline.c - - set_directory_hook: and its siblings are a new set of functions to - set, save, and restore the appropriate directory completion hook - - change callers to use {set,save,restore}_directory_hook instead of - manipulating rl_directory_rewrite_hook directly - - dircomplete_expand: new variable, defaults to 0, if non-zero causes - directory names to be word-expanded during word and filename - completion - - change {set,save,restore}_directory_hook to look at dircomplete_expand - and change rl_directory_completion_hook or rl_directory_rewrite_hook - appropriately - -bashline.h - - extern declaration for set_directory_hook so shopt code can use it - - 7/6 - --- -builtins/shopt.def - - globasciiranges: new settable shopt option, makes glob ranges act - as if in the C locale (so b no longer comes between A and B). - Suggested by Aharon Robbins - - 7/7 - --- -doc/{bash.1,bashref.texi} - - document new `globasciiranges' shopt option - - 7/8 - --- -builtins/shopt.def - - direxpand: new settable option, makes filename completion expand - variables in directory names like bash-4.1 did. - - shopt_set_complete_direxpand: new function, does the work for the - above by calling set_directory_hook - -doc/{bash.1,bashref.texi} - - document new `direxpand' shopt option - - 7/15 - ---- -lib/readline/isearch.c - - _rl_isearch_dispatch: when adding character to search string, use - cxt->lastc (which we use in the switch statement) instead of c, - since lastc can be modified earlier in the function - - 7/18 - ---- -lib/readline/rlprivate.h - - _rl_search_context: add another member to save previous value of - (multibyte) lastc: pmb is to mb as prevc is to lastc - -lib/readline/isearch.c: - - _rl_isearch_dispatch: if a key sequence indexes into a new keymap, - but doesn't find any bound function (k[ind].function == 0) or is - bound to self-insert (k[ind].function == rl_insert), back up and - insert the previous character (the one that caused the index into a - new keymap) and arrange things so the current character is the next - one read, so both of them end up in the search string. Fixes bug - reported by Clark Wang - - _rl_isearch_dispatch: a couple of efficiency improvements when adding - characters to the isearch string - - 7/24 - ---- -lib/readline/isearch.c - - _rl_isearch_dispatch: save and restore cxt->mb and cxt->pmb - appropriately when in a multibyte locale - -doc/{bash.1,bashref.texi} - - correct description of {x}>file (and other redirection operators - that allocate a file descriptor) to note the the fd range is - greater than or equal to 10. Fixes problem reported by - Christian Ullrich - -lib/readline/signals.c - - rl_signal_handler: don't interrupt immediately if in callback mode - -lib/readline/callback.c - - rl_callback_read_char: install signal handlers only when readline - has control in callback mode, so readline's signal handlers aren't - called when the application is active (e.g., between the calls to - rl_callback_handler_install and rl_callback_read_char). If the - readline signal handlers only set a flag, which the application - doesn't know about, the signals will effectively be ignored until - the next time the application calls into the readline callback - interface. Fixes problem of calling unsafe functions from signal - handlers when in callback mode reported by Jan Kratochvil - - -execute_cmd.c - - fix_assignment_words: when in Posix mode, the `command' builtin - doesn't change whether or not the command name it protects is an - assignment builtin. One or more instances of `command' - preceding `export', for instance, doesn't make `export' treat its - assignment statement arguments differently. Posix interpretation - #351 - -doc/{bash.1,bashref.texi} - - document new Posix-mode behavior of `command' when preceding builtins - that take assignment statements as arguments - -builtins/printf.def - - printstr: if fieldwidth or precision are < 0 or > INT_MAX when - supplied explicitly (since we take care of the `-' separately), - clamp at INT_MAX like when using getint(). Fixes issue reported - by Ralph Coredroy - - 7/25 - ---- -lib/readline/chardefs.h - - isxdigit: don't define if compiling with c++; declared as a c++ - template function. Fixes bug reported by Miroslav Lichvar - - -builtins/printf.def - - getint: if garglist == 0, return whatever getintmax returns (0). - Fixes bug reported by Ralph Coredroy - - 7/28 - ---- -doc/{bash.1,bashref.texi} - - minor changes to the descriptions of the cd and pushd builtins - -lib/sh/zread.c - - zsyncfd: change variable holding return value from lseek to - off_t. Bug report and fix from Gregory Margo - - 8/1 - --- -expr.c - - don't check for division by 0 when in a context where no evaluation - is taking place. Fixes bug reported by dnade.ext@orange-ftgroup.com - - 8/6 - --- -execute_cmd.c - - execute_command_internal: the parent branch of the subshell code - (where the child calls execute_in_subshell) should not close all - open FIFOs with unlink_fifo_list if it's part of a shell function - that's still executing. Fixes bug reported by Maarten Billemont - - - 8/9 - --- -builtins/common.c - - get_exitstat: return EX_BADUSAGE (2) on a non-numeric argument - -builtins/return.def - - return_builtin: just call get_exitstat to get the return status, - let it handle proper parsing and handling of arguments. Fixes - issue most recently raised by Linda Walsh . - Reverses change from 9/11/2008 (see above) - - 8/16 - ---- -doc/{bash.1,bashref.texi} - - clean up `set -e' language to make it clearer that any failure of - a compound command will cause the shell to exit, not just subshells - and brace commands - - 8/17 - ---- -configure.in - - make the various XXX_FOR_BUILD variables `precious' to autoconf to - avoid stale data - - change how CC_FOR_BUILD is initialized when cross-compiling and not, - but do not change behavior - - initialize CFLAGS_FOR_BUILD to -g when cross-compiling - - initialize LIBS_FOR_BUILD to $(LIBS) when not cross-compiling, empty - when cross-compiling - - create AUTO_CFLAGS variable to hold basic CFLAGS defaults; used when - CFLAGS not inherited from environment (like effect of old - auto_cflags variable) - - substitute LIBS_FOR_BUILD into output Makefiles - [changes inspired by bug report from Nathan Phillip Brink - -- gentoo bug 378941] - -builtins/Makefile.in - - substitute LIBS_FOR_BUILD from configure, not strictly initialized - to $(LIBS) - - 8/27 - ---- -doc/{bash.1,bashref.texi} - - minor changes to the here string description to clarify the - expansions performed on the word - -support/shobj-conf - - handle compilation on Lion (Mac OS X 10.7/darwin11) with changes - to darwin stanzas. Fixes readline bug reported by Vincent - Sheffer - -lib/sh/strtrans.c - - ansic_wshouldquote: check a string with multi-byte characters for - characters that needs to be backslash-octal escaped for $'...' - - ansic_shouldquote: if is_basic fails for one character, let - ansic_wshouldquote examine the rest of the string and return what - it returns. From a patch sent by Roman Rakus - - 8/30 - ---- -lib/sh/strtrans.c - - ansic_quote: changes to quote (or not) multibyte characters. New - code converts them to wide characters and uses iswprint to check - valid wide chars. From a patch sent by Roman Rakus - - - 9/7 - --- -lib/sh/shquote.c - - sh_backslash_quote: change to be table-driven so we can use a - different table if we want to - - sh_backslash_quote: takes a second char table[256] argument; - -externs.h - - sh_backslash_quote: add second argument to function prototype - -bashline.c,braces.c,parse.y,builtins/printf.def - - change callers of sh_backslash_quote to add second argument - -bashline.c - - filename_bstab: table of characters to pass to sh_backslash_quote; - characters with value 1 will be backslash-quoted - - set_filename_bstab: turn on characters in filename backslash-quote - table according to passed string argument - - call set_filename_bstab every time rl_filename_quote_characters is - assigned a value - - bash_quote_filename: call sh_backslash_quote with filename_bstab - as second argument. This allows other characters in filenames to - be quoted without quoting, for instance, a dollar sign in a shell - variable reference - - 9/8 - --- -bashline.c - - complete_fullquote: new variable, controls table passed to - sh_backslash_quote. If non-zero (the default), the standard set - of shell metacharacters -- as in bash versions up to and including - bash-4.2 -- gets backslash-quoted by the completion code. If zero, - sh_backslash_quote gets the table with the characters in the - variable reference removed, which means they are removed from the - set of characters to be quoted in filenames - - 9/10 - ---- -bashline.c - - bash_filename_stat_hook: new function, designed to expand variable - references in filenames before readline passes them to stat(2) - to determine whether or not they are a directory - - 9/15 - ---- -builtins/declare.def - - if assign_array_element fails due to a bad (or empty) subscript, mark - it as an assignment error and don't attempt any further processing - of that declaration. Fixes segfault bug reported by Diego Augusto - Molina - - 9/19 - ---- -expr.c - - exppower: replace the simple exponentiation algorithm with an - implementation of exponentiation by squaring. Inspired by report - from Nicolas ARGYROU - -bashline.c - - bash_quote_filename: check for rtext being non-null before - dereferencing it - - set_saved_history: operate_and_get_next assumes that the previous - line was added to the history, even when the history is stifled and - at the max number of entries. If it wasn't, make sure the history - number is incremented properly. Partial fix for bug reported by - gregrwm - -doc/{bash.1,bashref.texi},lib/readline/doc/{hsuser,rluser}.texi - - minor editorial changes inspired by suggestions from - Roger Zauner - - 9/20 - ---- -lib/intl/localealias.c - - read_alias_file: close resource leak (fp) when returning on error - - 9/22 - ---- -execute_command.c - - execute_intern_function: implement Posix interpretation 383 by making - it an error to define a function with the same name as a special - builtin when in Posix mode. - http://austingroupbugs.net/view.php?id=383#c692 - - 9/25 - ---- -doc/{bash.1,bashref.texi} - - formatting and some content changes from Benno Schulenberg - - - document new posix-mode behavior from interp 383 change of 9/22 - - 9/30 - ---- -execute_cmd.c - - shell_execve: add strerror to error message about executable file - that shell can't execute as a shell script. From suggestion by - daysleeper - - 10/1 - ---- -bashhist.c - - maybe_add_history: act as if literal_history is set when parser_state - includes PST_HEREDOC, so we save the bodies of here-documents just - as they were entered. Fixes bug reported by Jonathan Wakely - - - bash_add_history: make sure that the second and subsequent lines of - a here document don't have extra newlines or other delimiting - chars added, since they have the trailing newline preserved, when - `lithist' is set and history_delimiting_chars isn't called - -execute_cmd.c - - execute_command_internal: avoid fd exhaustion caused by using - process substitution in loops inside shell functions by using - copy_fifo_list and close_new_fifos (). Fixes debian bash bug - 642504 - -lib/readline/complete.c - - new variable, rl_filename_stat_hook, used by append_to_match. If - filename completion is desired, and rl_filename_stat_hook points - to a function, call that function to expand the filename in an - application-specific way before calling stat. - -bashline.c - - bash_default_completion: if variable completion returns a single - match, use bash_filename_stat_hook and file_isdir to determine - whether or not the variable name expands to a directory. If it - does, set the filename_append_character to `/'. This is not - perfect, so we will see how it works out. Adds functionality - requested by Peter Toft and Patrick Pfeifer - - - rl_filename_stat_hook: assigned bash_filename_stat_hook, so things - like $HOME/Downloads (after completion) have a slash appended. - In general, this causes the stat hook to be called whenever - filename completion is appended. Adds functionality requested by - Patrick Pfeifer - -lib/readline/readline.h - - new extern declaration for rl_filename_stat_hook - -lib/readline/doc/rltech.texi - - rl_directory_rewrite_hook: now documented - - rl_filename_stat_hook: document - -pcomplete.c - - gen_action_completions: in the CA_DIRECTORY case, turn off - rl_filename_completion_desired if it was off before we called - rl_filename_completion_function and we didn't get any matches. - Having it on causes readline to quote the matches as if they - were filenames. Adds functionality requested by many, - including Clark Wang - -assoc.[ch] - - assoc_replace: new function, takes the same arguments as - assoc_insert, but returns the old data instead of freeing it - - assoc_insert: if the object returned by hash_insert doesn't have - the same value for its key as the key passed as an argument, we - are overwriting an existing value. In this case, we can free the - key. Fixes bug reported by David Parks - - 10/5 - ---- -print_cmd.c - - indirection_level_string: small change to only re-enable `x' - option after calling decode_prompt_string if it was on before. In - normal mode, it will be, but John Reiser - has a novel use for that code in conjunction with a pre-loaded - shared library that traces system call usage in shell scripts - - 10/10 - ----- -Makefile.in - - Fix from Mike Frysinger to avoid trying to - build y.tab.c and y.tab.h with two separate runs of yacc if - parse.y changes. Problem with parallel makes - - Fix from Mike Frysinger to avoid subdirectory - builds each trying to make version.h (and all its dependencies) - -lib/sh/Makefile.in - - remove some dependencies on version.h where it doesn't make sense - -variables.c - - initialize_shell_variables: while reading the environment, a shell - running in posix mode now checks for SHELLOPTS being readonly (it - gets set early on in main()) before trying to assign to it. It - saves an error message and the variable gets parsed as it should. - Fixes bug reported by Len Giambrone - - 10/14 - ----- -doc/{bash.1,bashref.texi} - - add to the "duplicating file descriptors" description that >&word - doesn't redirect stdout and stderr if word expands to `-' - - add to the "appending standard output and standard error" - description a note that >&word, where word is a number or `-', - causes other redirection operators to apply for sh and Posix - compatibility reasons. Suggested by Greg Wooledge - - - 10/15 - ----- -pcomplete.c - - change pcomp_filename_completion_function to only run the filename - dequoting function in the cases (as best as it can figure) where - readline won't do it via rl_filename_completion_function. Based - on reports from - - 10/19 - ----- -bashline.c - - attempt_shell_completion: add call to set_directory_hook() to make - sure the rewrite functions are correct. It's cheap and doesn't - hurt - - command_word_completion_function: if completing a command name that - starts with `.' or `..', temporarily suppress the effects of the - `direxpand' option and restore the correct value after calling - rl_filename_completion_function. If it's enabled, the directory - name will be rewritten and no longer match `./' or `../'. Fixes - problem reported by Michael Kalisz - - 10/22 - ----- -builtins/history.def - - push_history: make sure remember_on_history is enabled before we - try to delete the last history entry -- the `history -s' command - might not have been saved. Fixes bug reported by - lester@vmw-les.eng.vmware.com - -lib/readline/complete.c - - rl_callback_read_char: add calls to a macro CALLBACK_READ_RETURN - instead of straight return; add same call at end of function. - Placeholder for future work in deinstalling signal handlers when - readline is not active - - 10/25 - ----- -expr.c - - exp2: catch arithmetic overflow when val1 == INTMAX_MIN and val2 == -1 - for DIV and MOD and avoid SIGFPE. Bug report and pointer to fix - from Jaak Ristioja - - expassign: same changes for arithmetic overflow for DIV and MOD - - 10/28 - ----- -subst.c - - parameter_brace_expand: allow pattern substitution when there is an - expansion of the form ${var/} as a no-op: replacing nothing with - nothing - - parameter_brace_patsub: don't need to check for PATSUB being NULL; - it never is - -flags.c - - if STRICT_POSIX is defined, initialize history_expansion to 0, since - history expansion (and its treatment of ! within double quotes) is - not a conforming posix environment. From austin-group issue 500 - -lib/readline/histexpand.c - - history_expand: when processing a string within double quotes - (DQUOTE == 1), make the closing double quote inhibit history - expansion, as if the word were outside double quotes. In effect, - we assume that the double quote is followed by a character in - history_no_expand_chars. tcsh and csh seem to do this. This - answers a persistent complaint about history expansion - - 10/29 - ----- -make_cmd.c - - make_arith_for_command: use skip_to_delim to find the next `;' - when breaking the string between the double parens into three - separate components instead of a simple character loop. Fixes - bug reported by Dan Douglas - - 11/2 - ---- -Makefile.in - - make libbuiltins.a depend on builtext.h to serialize its creation - and avoid conflict between multiple invocations of mkbuiltins. - Fix from Mike Frysinger - - 11/5 - ---- -findcmd.c - - user_command_matches: if stat(".", ...) returns -1, set st_dev - and st_ino fields in dotinfo to 0 to avoid same_file matches - - find_user_command_in_path: check stat(2) return the same way - -lib/glob/glob.c - - glob_vector: don't call strlen(pat) without checking pat == 0 - - glob_dir_to_array: make sure to free `result' and all allocated - members before returning error due to malloc failure - - glob_vector: make sure to free `nextname' and `npat' on errors - (mostly when setting lose = 1) - - glob_vector: if flags & GX_MATCHDIRS but not GX_ALLDIRS, make - sure we free `subdir' - - glob_filename: when expanding ** (GX_ALLDIRS), make sure we - free temp_results (return value from glob_vector) - -lib/glob/xmbsrtowcs.c - - xdupmbstowcs: fix call to realloc to use sizeof (char *) instead - of sizeof (char **) when assigning idxtmp - -execute_cmd.c - - print_index_and_element: return 0 right away if L == 0 - - is_dirname: fix memory leak by freeing `temp' - - time_command: don't try to deref NULL `command' when assigning - to `posix_time' - - shell_execve: null-terminate `sample' after READ_SAMPLE_BUF so it's - terminated for functions that expect that - -builtins/read.def - - read_builtin: don't call bind_read_variable with a potentially-null - string - -pcomplete.c - - gen_command_matches: don't call dispose_word_desc with a NULL arg - - gen_compspec_completions: fix memory leak by freeing `ret' before - calling gen_action_completions (tcs, ...). happens when - performing directory completion as default and no completions - have been generated - - gen_progcomp_completions: make sure to set foundp to 0 whenever - returning NULL - - it_init_aliases: fix memory leak by freeing alias_list before - returning - -bashline.c - - command_word_completion_function: don't call restore_tilde with a - NULL directory_part argument - - bash_directory_expansion: bugfix: don't throw away results of - rl_directory_rewrite_hook if it's set and returns non-zero - - bind_keyseq_to_unix_command: free `kseq' before returning error - -arrayfunc.c - - assign_array_element_internal: make sure `akey' is freed if non-null - before returning error - - assign_compound_array_list: free `akey' before returning error - - array_value_internal: free `akey' before returning error - - unbind_array_element: free `akey' before returning error - -subst.c - - array_length_reference: free `akey' before returning error in case - of expand_assignment_string_to_string error - - array_length_reference: free `akey' after call to assoc_reference - - skip_to_delim: if skipping process and command substitution, free - return value from extract_process_subst - - parameter_brace_substring: free `val' (vtype == VT_VARIABLE) before - returning if verify_substring_values fails - - parameter_brace_expand: remove two duplicate lines that allocate - ret in parameter_brace_substring case - - parameter_brace_expand: convert `free (name); name = xmalloc (...)' - to use `xrealloc (name, ...)' - - parameter_brace_expand: free `name' before returning when handling - ${!PREFIX*} expansion - - split_at_delims: fix memory leak by freeing `d2' before returning - -redir.c - - redirection_error: free `filename' if the redirection operator is - REDIR_VARASSIGN by assigning allocname - -eval.c - - send_pwd_to_eterm: fix memory leak by freeing value returned by - get_working_directory() - -builtins/cd.def - - change_to_directory: fix memory leak by freeing return value from - resetpwd() - - cd_builtin: fix memory leak by freeing value returned by dirspell() - - cd_builtin: fix memory leak by freeing `directory' if appropriate - before overwriting with return value from resetpwd() - -builtins/type.def - - describe_command: free `full_path' before overwriting it with return - value from sh_makepath - -builtins/complete.def - - compgen_builtin: fix memory leak by calling strlist_dispose (sl) - before overwriting sl with return value from completions_to_stringlist - -builtins/hash.def - - list_hashed_filename_targets: fix memory leak by freeing `target' - -make_cmd.c - - make_arith_for_command: free `init', `test', and `step' before - returning error on parse error - -jobs.c - - initialize_job_control: don't call move_to_high_fd if shell_tty == -1 - -general.c - - check_dev_tty: don't call close with an fd < 0 - - legal_number: deal with NULL `string' argument, return invalid - -lib/sh/fmtulong.c - - fmtulong: if the `base' argument is invalid, make sure we index - buf by `len-1' at maximum - -print_cmd.c - - print_deferred_heredocs: don't try to dereference a NULL `cstring' - - cprintf: make sure to call va_end (args) - -variables.c - - push_dollar_vars: fix call to xrealloc to use sizeof (WORD_LIST *) - instead of sizeof (WORD_LIST **) - -lib/sh/zmapfd.c - - zmapfd: if read returns error, free result and return -1 immediately - instead of trying to reallocate it - - 11/6 - ---- -execute_cmd.c - - cpl_reap: rewrote to avoid using pointer after freeing it; now builds - new coproc list on the fly while traversing the old one and sets the - right values for coproc_list when done - - 11/12 - ----- -builtins/set.def - - if neither -f nor -v supplied, don't allow a readonly function to - be implicitly unset. Fixes bug reported by Jens Schmidt - - -lib/readline/callback.c - - change CALLBACK_READ_RETURN to clear signal handlers before returning - from rl_callback_read_char so readline's signal handlers aren't - installed when readline doesn't have control. Idea from Jan - Kratochvil and the GDB development - team - -pcomplete.h - - COPT_NOQUOTE: new complete/compgen option value - -builtins/complete.def - - noquote: new complete/compgen option; will be used to disable - filename completion quoting - -pcomplete.c - - pcomp_set_readline_variables: pay attention to COPT_NOQUOTE; turns - of rl_filename_quoting_desired if set; turns it on if unset (value - is inverted, since default is on) - -doc/bash.1,lib/readline/doc/rluser.texi - - document new -o noquote option to complete/compgen/compopt - -pathexp.c - - quote_string_for_globbing: if QGLOB_REGEXP, make sure characters - between brackets in an ERE bracket expression are not inappropriately - quoted with backslashes. This is a pretty substantial change, - should be stressed when opening bash up for alpha and beta tests. - Fixes bug pointed out by Stephane Chazleas - - -doc/{bash.1,bashref.texi} - - document that regexp matches can be inconsistent when quoting - characters in bracket expressions, since usual quoting characters - lose their meaning within brackets - - note that regular expression matching when the pattern is stored - in a shell variable which is quoted for expansion causes string - matching - -redir.h - - RX_SAVEFD: new flag value; notes that a redirection denotes an - fd used to save another even if it's not >= SHELL_FD_BASE - -redir.c - - do_redirection_internal: when deciding whether or not to reset the - close-on-exec flag on a restored file descriptor, trust the value - of redirect->flags & RX_SAVCLEXEC even if the fd is < SHELL_FD_BASE - if the RX_SAVEFD flag is set - - add_undo_redirect: set the RX_SAVEFD flag if the file descriptor - limit is such that the shell can't duplicate to a file descriptor - >= 10. Fixes a limitation that tripped a coreutils test reported - by Paul Eggert - - 11/19 - ----- -doc/{bash.1,bashref.texi},lib/readline/doc/hsuser.texi - - make it clear that bash runs HISTFILESIZE=$HISTSIZE after reading - the startup files - - make it clear that bash runs HISTSIZE=500 after reading the - startup files - - make it clear that setting HISTSIZE=0 causes commands to not be - saved in the history list - - make it clear that setting HISTFILESIZE=0 causes the history file - to be truncated to zero size - -variables.c - - sv_histsize: change so setting HISTSIZE to a value less than 0 - causes the history to be `unstifled' - - sv_histsize: change so setting HISTFILESIZE to a value less than 0 - results in no file truncation - - make it clear that numeric values less than 0 for HISTFILESIZE or - HISTSIZE inhibit the usual functions - - 11/23 - ----- -parse.y - - save_input_line_state: add missing `return ls' at the end, since the - function is supposed to return its argument. Pointed out by - Andreas Schwab - -builtins/read.def - - skip over NUL bytes in input, as most modern shells seem to. Bug - report by Matthew Story - -lib/readline/vi_mode.c - - rl_vi_replace: set _rl_vi_last_key_before_insert to invoking key - - 11/25 - ----- -builtins/read.def - - read_builtin: if xrealloc returns same pointer as first argument, - don't bother with the remove_unwind_protect/add_unwind_protect pair - - read_builtin: set a flag (`reading') around calls to zread/zreadc - and readline() - - sigalrm: change to set flag (`sigalrm_seen') and only longjmp if - currently in read(2) (reading != 0) - - CHECK_ALRM: new macro, checks sigalrm_seen and longjmps if non-zero, - behavior of old SIGALRM catching function - - read_builtin: call CHECK_ALRM in appropriate places while reading - line of input. Fixes bug reported by Pierre Gaston - - -lib/readline/vi_mode.c - - rl_vi_replace: initialize characters before printing characters in - vi_replace_keymap to their default values in vi_insertion_keymap, - since we're supposed to be in insert mode replacing characters - - rl_vi_replace: call rl_vi_start_inserting to set last command to - `R' for undo - - rl_vi_replace: set _rl_vi_last_key_before_insert to `R' for future - use by _rl_vi_done_inserting - - vi_save_insert_buffer: new function, broke out code that copies text - into vi_insert_buffer from _rl_vi_save_insert - - _rl_vi_save_replace: new function, saves text modified by - rl_vi_replace (using current point and vi_replace_count to figure - it out) to vi_replace_buffer - - _rl_vi_save_insert: call vi_save_insert_buffer - - _rl_vi_done_inserting: if _rl_vi_last_key_before_insert == 'R', call - _rl_vi_save_replace to save text modified in replace mode (uses - vi_save_insert_buffer) - - _rl_vi_replace_insert: new function, replaces the number of chars - in vi_insert_buffer after rl_point with contents ov vi_insert_buffer - - rl_vi_redo: call _rl_vi_replace_insert if last command == 'R' and - there's something in vi_insert_buffer. Fixes bug with `.' not - redoing the most recent `R' command, reported by Geoff Clare - in readline area on savannah - - 11/26 - ----- -lib/readline/rlprivate.h - - RL_SIG_RECEIVED(): evaluate to non-zero if there is a pending signal - to be handled - - RL_SIGINT_RECEIVED(): evaluate to non-zero if there is a pending - SIGINT to be handled - -lib/readline/complete.c - - remove all mention of _rl_interrupt_immediately - - rl_completion_matches: check RL_SIG_RECEIVED after each call to - the entry function, call RL_CHECK_SIGNALS if true to handle the - signal - - rl_completion_matches: if RL_SIG_RECEIVED evaluates to true, free - and zero out the match_list this function allocated - - rl_completion_matches: if the completion entry function is - rl_filename_completion_function, free the contents of match_list, - because that function does not keep state and will not free the - entries; avoids possible memory leak pointed out by - Garrett Cooper - - gen_completion_matches: if RL_SIG_RECEIVED evalutes to true after - calling rl_attempted_completion_function, free the returned match - list and handle the signal with RL_CHECK_SIGNALS; avoids - possible memory leak pointed out by Garrett Cooper - - - gen_completion_matches: if RL_SIG_RECEIVED evaluates to true after - calling rl_completion_matches, free the returned match list and - handle the signal with RL_CHECK_SIGNALS - -lib/readline/util.c - - rl_settracefp: new utility function to set the tracing FILE * - -lib/readline/signals.c - - _rl_sigcleanup: pointer to a function that will be called with the - signal and a void * argument from _rl_handle_signal - - _rl_sigcleanarg: void * that the rest of the code can set to have - passed to the signal cleanup function - - _rl_handle_signal: if _rl_sigcleanup set, call as - (*_rl_sigcleanup) (sig, _rl_sigcleanarg) - -lib/readline/rlprivate.h - - extern declarations for _rl_sigcleanup and _rl_sigcleanarg - -lib/readline/complete.c - - _rl_complete_sigcleanup: signal cleanup function for completion code; - calls _rl_free_match_list on _rl_sigcleanarg if signal == SIGINT - - rl_complete_internal: before calling display_matches if what_to_do - == `?', set _rl_sigcleanup to _rl_complete_sigcleanup so the match - list gets freed on SIGINT; avoids possible memory leak pointed out - by Garrett Cooper - - rl_complete_internal: in default switch case, call _rl_free_match_list - before returning to avoid memory leak - -doc/bashref.texi - - start at a set of examples for the =~ regular expression matching - operator, touching on keeping the pattern in a shell variable and - quoting portions of the pattern to remove their special meaning - - 12/1 - ---- -lib/glob/gmisc.c - - extglob_pattern: new function, returns 1 if pattern passed as an - argument looks like an extended globbing pattern - -lib/glob/glob.c - - skipname: return 0 immediately if extglob_pattern returns non-zero, - let the extended globbing code do the right thing with skipping - names beginning with a `.' - - mbskipname: return 0 immediately if extglob_pattern returns non-zero, - let the extended globbing code do the right thing with skipping - names beginning with a `.'. Fixes bug reported by Yongzhi Pan - - - 12/2 - ---- -lib/glob/smatch.c - - patscan, patscan_wc: no longer static so other parts of the glob - library can use them, renamed to glob_patscan, glob_patscan_wc - -lib/glob/glob.c - - extern declarations for glob_patscan, glob_patscan_wc - - wchkname: new function, does skipname on wchar_t pattern and dname, - old body of mbskipname after converting to wide chars - - extglob_skipname: new function, checks all subpatterns in an extglob - pattern to determine whether or not a filename should be skipped. - Calls skipname for each subpattern. Dname is only skipped if all - subpatterns indicate it should be. Better fix for bug reported by - Yongzhi Pan - - wextglob_skipname: wide-char version of extglob_skipname, calls - wchkname instead of calling back into mbskipname for each - subpattern to avoid problems with char/wchar_t mismatch - - skipname: call extglob_skipname if extglob_pattern returns non-zero - - mbskipname: call wextglob_skipname if extglob_pattern returns non-zero - - mbskipname: short-circuit immediately if no multibyte chars in - pattern or filename - -execute_cmd.c - - execute_cond_node: added parens to patmatch assignment statement to - make intent clearer - - 12/3 - ---- -configure.in,config.h.in - - check for imaxdiv, define HAVE_IMAXDIV if present - -expr.c - - expassign, exp2: use imaxdiv if available. Doesn't help with checks - for overflow from 10/25 - - 12/6 - ---- -lib/readline/complete.c - - compute_lcd_of_matches: if we're ignoring case in the matches, only - use what the user typed as the lcd if it matches the first match - (after sorting) up to the length of what was typed (if what the - user typed is longer than the shortest of the possible matches, use - the shortest common length of the matches instead). If it doesn't - match, use the first of the list of matches, as if case were not - being ignored. Fixes bug reported by Clark Wang - - - 12/7 - ---- -builtins/cd.def - - cd_builtin: add code to return error in case cd has more than one - non-option argument, conditional on CD_COMPLAINS define (which is - not defined anywhere) - -doc/{bash.1,bashref.texi} - - note that additional arguments to cd following the directory name - are ignored. Suggested by Vaclav Hanzl - - 12/10 - ----- -lib/readline/input.c - - rl_read_key: don't need to increment key sequence length here; doing - it leads to an off-by-one error - -lib/readline/macro.c - - rl_end_kbd_macro: after off-by-one error with rl_key_sequence_length - fixed, can decrement current_macro_index by rl_key_sequence_length - (length of key sequence that closes keyboard macro) - -lib/readline/readline.c - - _rl_dispatch_subseq: fix extra increment of rl_key_sequence_length - when ESC maps to a new keymap and we're converting meta characters - to ESC+key - - _rl_dispatch_subseq: better increment of rl_key_sequence_length - before we dispatch to a function in the ISFUNC case (where the - second increment above should have happened) - - rl_executing_keyseq: the full key sequence that ended up executing - a readline command. Available to the calling application, maintained - by _rl_dispatch_subseq, indexed by rl_key_sequence_length - - rl_executing_key: the key that was bound to the currently-executing - readline command. Same as the `key' argument to the function - -lib/readline/readline.h - - rl_executing_keyseq: extern declaration - - rl_executing_key: extern declaration - - rl_key_sequence_length: declaration moved here from rlprivate.h, - now part of public interface - -lib/readline/rlprivate.h - - new extern declaration for _rl_executing_keyseq_size, buffer size - for rl_executing_keyseq - -lib/readline/doc/rltech.texi - - documented new variables: rl_executing_key, rl_executing_keyseq, - rl_key_sequence_length - - 12/13 - ----- -bashline.c - - bash_execute_unix_command: replace ad-hoc code that searches - cmd_xmap for correct command with call to rl_function_of_keyseq - using rl_executing_keyseq; now supports key sequences longer - than two characters. Fixes bug reported by Michael Kazior - - - 12/15 - ----- -make_cmd.c - - make_function_def: don't null out source_file before calling - make_command so it can be used later on when the function definition - is executed - -execute_cmd.c - - execute_intern_function: second argument is now FUNCTION_DEF * - instead of COMMAND * - - execute_command_internal: call execute_intern_function with the - new second argument (the entire FUNCTION_DEF instead of just the - command member) - - execute_intern_function: if DEBUGGER is defined, call - bind_function_def before calling bind_function, just like - make_function_def does (might be able to take out the call in - make_function_def depending on what the debugger does with it). - Fixes bug reported by - -expr.c - - more minor changes to cases of INTMAX_MIN % -1 and INTMAX_MIN / 1; - fix typos and logic errors - - 12/16 - ----- -bashline.c - - find_cmd_start: change flags to remove SD_NOSKIPCMD so it skips over - command substitutions and doesn't treat them as command separators - - attempt_shell_completion: instead of taking first return from - find_cmd_name as command name to use for programmable completion, - use loop to skip over assignment statements. Fixes problem reported - by Raphael Droz - - attempt_shell_completion: if we don't find a command name but the - command line is non-empty, assume the other words are all assignment - statements and flag that point is in a command position so we can - do command name completion - - attempt_shell_completion: if the word being completed is the first - word following a series of assignment statements, and the - command line is non-empty, flag that point is in a command position - so we can do command name completion - -lib/readline/history.c - - history_get_time: atol -> strtol - - 12/18 - ----- -parse.y - - parser_in_command_position: external interface to the - command_token_position macro for use by other parts of the shell, - like the completion mechanism - -externs.h - - extern declaration for parser_in_command_position - - 12/19 - ----- - -builtins/read.def - - read_builtin: make sure all calls to bind_read_variable are passed - a non-null string. Fixes bug reported by Dan Douglas - - -bashline.c - - attempt_shell_completion: mark that we're in a command position if - we're at the start of the line and the parser is ready to accept - a reserved word or command name. Feature most recently suggested - by Peng Yu - - 12/21 - ----- -lib/readline/bind.c - - _rl_escchar: return the character that would be backslash-escaped - to denote the control character passed as an argument ('\n' -> 'n') - - _rl_isescape: return 1 if character passed is one that has a - backslash escape - - _rl_untranslate_macro_value: new second argument: use_escapes, if - non-zero translate to backslash escapes where possible instead of - using straight \C-x for control character `x'. Change callers - - _rl_untranslate_macro_value: now global - -lib/readline/rlprivate.h - - _rl_untranslate_macro_value: extern declaration - -lib/readline/{macro.c,readline.h} - - rl_print_last_kbd_macro: new bindable function, inspired by patch - from Mitchel Humpherys - -lib/readline/funmap.c - - print-last-kbd-macro: new bindable command, bound to - rl_print_last_kbd_macro - -lib/readline/doc/{rluser.texi,readline.3},doc/bash.1 - - print-last-kbd-macro: document. - -lib/readline/text.c - - _rl_insert_next: if we're defining a macro, make sure the key gets - added to the macro text (should really audit calls to rl_read_key() - and make sure the right thing is happening for all of them) - -bashline.[ch] - - print_unix_command_map: new function, prints all bound commands in - cmd_xmap using rl_macro_dumper in a reusable format - -builtins/bind.def - - new -X option: print all keysequences bound to Unix commands using - print_unix_command_map. Feature suggested by Dennis Williamson - (2/2011) - -doc/{bash.1,bashref.texi} - - document new `bind -X' option - - 12/24 - ----- - -doc/{bash.1,bashref.texi} - - add a couple of sentences to the description of the case modification - operators making it clearer that each character of parameter is - tested against the pattern, and that the pattern should only attempt - to match a single character. Suggested by Bill Gradwohl - - - 12/28 - ----- -shell.c - - init_noninteractive: instead of calling set_job_control(0) to - unconditionally turn off job control, turn on job control if - forced_interactive or jobs_m_flag is set - - shell_initialize: call initialize_job_control with jobs_m_flag as - argument so `bash -m script' enables job control while running the - script - -jobs.c - - initialize_job_control: if the `force' argument is non-zero, turn on - job control even if the shell is not currently interactive - (interactive == 0) - - 12/29 - ----- - -flags.h - - new extern declaration for jobs_m_flag - -builtins/{cd,set}.def,doc/{bash.1,bashref.texi} - - added text clarifying the descriptions of cd -L and -P, suggested by - Padraig Brady - - slight change to the description of `set -P' about resolving symbolic - links - -lib/readline/doc/rluser.texi - - Added an example to the programmable completion section: _comp_cd, - a completion function for cd, with additional verbiage. Text - includes a reference to the bash_completion project - - 1/1/2012 - -------- -jobs.c - - set_job_status_and_cleanup: note that a job is stopped due to - SIGTSTP (any_tstped) if job_control is set; there's no need to - test interactive - - 1/5 - --- -quit.h - - LASTSIG(): new macro, expands to signal number of last terminating - signal received (terminating_signal or SIGINT) - -trap.c - - first_pending_trap: returns lowest signal number with a trap pending - - trapped_signal_received: set to the last trapped signal the shell - received in trap_handler(); reset to 0 in run_pending_traps - -builtins/read.def - - read_builtin: changes to posix-mode (posixly_correct != 0) to make - `read' interruptible by a trapped signal. After the trap runs, - read returns 128+sig and does not assign the partially-read line - to the named variable(s). From an austin-group discussion started - by David Korn - - 1/11 - ---- -doc/{bash.1,bashref.texi} - - slight changes to the descriptions of the compat32 and compat40 shell - options to clarify their meaning - - 1/12 - ---- -lib/readline/{colors.[ch],parse-colors.[ch]} - - new files, part of color infrastructure support - -Makefile.in,lib/readline/Makefile.in - - arrange to have colors.o and parse-colors.o added to readline - library - -{configure,config.h}.in - - check for stdbool.h, define HAVE_STDBOOL_H if found - - 1/14 - ---- -lib/readline/bind.c - - colored_stats: new bindable variable, enables using colors to - indicate file type when listing completions - -lib/readline/complete.c - - _rl_colored_stats: new variable, controlled by colored-stats bindable - variable - - colored_stat_start, colored_stat_end: new functions to set and reset - the terminal color appropriately depending on the type of the - filename to be printed - - print_filename: changes to print colors if `colored-stats' variable - set. Changes contributed by Raphael Droz - - -lib/readline/readline.c - - rl_initialize_everything: add call to _rl_parse_colors to parse - color values out of $LS_COLORS. May have to add to rl_initialize - to make more dynamic if LS_COLORS changes (which doesn't happen - very often, if at all) - -lib/readline/rlprivate.h - - _rl_colored_stats: new extern declaration - -lib/readline/doc/{readline.3,rluser.texi},doc/bash.1 - - colored-stats: document new bindable readline variable - -lib/readline/colors.c - - _rl_print_color_indicator: call rl_filename_stat_hook before calling - lstat/stat so we can get color indicators for stuff like - $HOME/Applications - -lib/readline/complete.c - - stat_char: call rl_filename_stat_hook before calling lstat/stat - -findcmd.[ch],execute_cmd.c - - search_for_command: now takes a second `flags' argument; changed - header function prototype and callers - - search_for_command: if (flags & 1), put the command found in $PATH - into the command hash table (previous default behavior) - -execute_cmd.c - - is_dirname: call search_for_command with flags argument of 0 so it - doesn't try to put something in the command hash table - -bashline.c - - bash_command_name_stat_hook: a hook function for readline's - filename_stat_hook that does $PATH searching the same way that - execute_cmd.c:execute_disk_command() does it, and rewrites the - passed filename if found. Does not put names into command hash - table. This allows command name completion to take advantage - of `visible-stats' and `colored-stats' settings. - - executable_completion: new function, calls the directory completion - hook to expand the filename before calling executable_file or - executable_or_directory; change command_word_completion_function to - call executable_completion. This allows $HOME/bin/[TAB] to do - command completion and display alternatives - - 1/17 - ---- -pcomplete.c - - gen_command_matches: now takes a new second argument: the command - name as deciphered by the programmable completion code and used - to look up the compspec; changed callers (gen_compspec_completions) - - gen_shell_function_matches: now takes a new second argument: the - command that originally caused the completion function to be - invoked; changed callers (gen_compspec_completions)) - - build_arg_list: now takes a new second argument: the command name - corresponding to the current compspec; changed callers - (gen_command_matches, gen_shell_function_matches) - - build_arg_list: now uses `cmd' argument to create $1 passed to - invoked command or shell function - - gen_compspec_completions: if we skipped a null command at the - beginning of the line (e.g., for completing `>'), add a new word for - it at the beginning of the word list and increment nw and cw - appropriately. This is all a partial fix for the shortcoming - pointed out by Sung Pae - - 1/18 - ---- - -{configure,config.h}.in - - new check: check for AUDIT_USER_TTY defined in , - define HAVE_DECL_AUDIT_USER_TTY if both are found - -lib/readline/rlconf.h - - ENABLE_TTY_AUDIT_SUPPORT: new define, allows use of the Linux kernel - tty auditing system if it's available and enabled - -lib/readline/util.c - - _rl_audit_tty: new function, send a string to the kernel tty audit - system - -lib/readline/rlprivate.h - - _rl_audit_tty: new extern declaration - -lib/readline/readline.c - - readline: call _rl_audit_tty with line to be returned before returning - it if the Linux tty audit system is available and it's been enabled - in rlconf.h Original patch from Miroslav Trmac; recent request - from Miroslav Lichvar - - 1/21 - ---- - -lib/readline/readline.c: - - _rl_dispatch_subseq: add an inter-character timeout for multi-char - key sequences. Suggested by . Still needs - work to make a user-settable variable - -parse.y - - shell_getc: make code that uses the pop_alias dependent on ALIAS - define - -variables.h - - sv_tz: extern define should only depend on HAVE_TZSET - -expr.c - - expr_streval: if ARRAY_VARS is not defined, set lvalue->ind to -1; - move assignment to `ind' inside define - - expr_bind_array_element: declaration and uses need to be #ifdef - ARRAY_VARS - -arrayfunc.h - - AV_ALLOWALL, AV_QUOTED, AV_USEIND: define to 0 if ARRAY_VARS not - defined; used in subst.c unconditionally - -sig.h - - make the signal blocking functions not dependent on JOB_CONTROL - -sig.c - - sigprocmask: make the replacement definition not dependent on - JOB_CONTROL - -trap.c - - use BLOCK_SIGNAL/UNBLOCK_SIGNAL instead of code dependent on - HAVE_POSIX_SIGNALS and BSD signals - - 1/24 - ---- - -print_cmd.c - - print_redirection_list: change the conditions under which - r_duplicating_output_word is mapped to r_err_and_out to more or - less match those used in redir.c. Fixes bug pointed out by - Dan Douglas - - - 1/29 - ---- -lib/readline/signals.c - - _rl_block_sigwinch,_rl_release_sigwinch: don't compile in bodies - unless SIGWINCH is defined. Fixes bug reported by Pierre Muller - - -doc/{bash.1,bashref.texi} - - small modifications to the introduction to the REDIRECTION section - to describe how redirections can modify file handles - - small modification to the section describing base#n to make it - clearer that n can be denoted using non-numerics. From a posting - by Linda Walsh - - 2/2 - --- -builtins/printf.def - - printf_builtin: make sure vbuf is intialized and non-null when -v - is supplied, since other parts of the code assume that it's not - null (e.g., bind_printf_variable()). Fixes bug reported by Jim - Avera - - 2/4 - --- -lib/readline/undo.c - - _rl_free_undo_list: new function, old body of rl_free_undo_list, - frees undo entries in UNDO_LIST * passed as argument - - rl_free_undo_list: call _rl_free_undo_list - -lib/readline/rlprivate.h - - _rl_free_undo_list: new extern declaration - - _rl_keyseq_timeout: new extern declaration (see below) - -lib/readline/misc.c - - rl_clear_history: new function. Clears the history list and frees - all associated data similar to history.c:clear_history(), but - takes rl_undo_list into account and frees and UNDO_LISTs saved as - `data' members of a history list entry - -lib/readline/doc/rltech.texi - - rl_clear_history: documented - -lib/readline/readline.c - - _rl_keyseq_timeout: new variable to hold intra-key timeout value - from 1/21 fix; specified in milliseconds. Default value is 500 - - _rl_dispatch_subseq: change to use _rl_keyseq_timeout as intra-key - timeout if it's greater than 0; no timeout if <= 0 - - _rl_dispatch_subseq: don't check for queued keyboard input if we have - pushed or pending input, or if we're reading input from a macro - -lib/readline/bind.c - - keyseq-timeout: new bindable variable, shadows _rl_keyseq_timeout - - string_varlist: add keyseq-timeout - - sv_seqtimeout: new function to modify value of _rl_keyseq_timeout; - clamps negative values at 0 for now - - _rl_get_string_variable_value: return value for keyseq-timeout - -doc/bash.1,lib/readline/doc/{rluser.texi,readline.3} - - keyseq-timeout: documented - -lib/readline/isearch.c - - _rl_isearch_dispatch: modification to fix from 7/18 to not use - cxt->keymap and cxt->okeymap, since by the time this code is - executed, they are equal. Use `f' to check for rl_insert or - unbound func - - _rl_isearch_dispatch: if we're switching keymaps, not in - callback mode, and don't have pending or pushed input, use - _rl_input_queued to resolve a potentially ambiguous key sequence. - Suggested by Roger Zauner - - _rl_isearch_dispatch: if we have changed keymaps and resolved to - an editing function (not self-insert), make sure we stuff the - right characters back onto the input after changing the keymap - back so the right editing function is executed after the search - is terminated. Rest of fix for bug reported by Roger Zauner - - - 2/5 - --- -builtins/gen-helpfiles.c - - new file: reads struct builtin and writes the long docs to files - in the `helpdirs' subdirectory. The filename is given in the - previously-unused `handle' member of the struct builtin. Links - with `tmpbuiltins.o', which is created by Makefile to have the - right long documentation. When not cross-compiling, gets the - right #defines based on configuration options from config.h instead - of trying to parse conditional parts of def files. Fixes - shortcoming pointed out by Andreas Schwab - -builtins/Makefile.in - - tmpbuiltins.c: new generated file, created to enable creation of - separate helpfiles based on correct #defines instead of trying to - parse conditional parts of def files - - gen-helpfiles: new program to generate helpfiles, links with - tmpbuiltins.o - - HELPFILES_TARGET: new target, substituted by configure to `helpdoc' - if separate helpfiles requested - - targets: new target, libbuiltins.a and $(HELPFILES_TARGET) - - CREATED_OBJECTS: new variable, holds created object files for - make clean; changed make clean to remove created objects - - helpdoc: changed to call gen-helpfiles instead of mkbuiltins - -Makefile.in - - when building libbuiltins.a, recursively call make with `targets' - argument to make sure separate helpfiles get built - -configure.in - - substitute `helpdoc' as value of HELPFILES_TARGET if - --enable-separate-helpfiles supplied as configure argument - -builtins/mkbuiltins.c - - `-nofunctions': new argument, causes mkbuiltins to not write value - for function implementing a particular builtin to struct builtin - and to write document file name to `handle' member of struct builtin - - no longer writes separate helpfiles; that is left to gen-helpfiles - - 2/8 - --- -subst.c - - make sure last_command_exit_value is set to a non-zero value before - any calls to report_error, since `-e' set will short-circuit - report_error. Fixes bug reported by Ewan Mellor - - -variables.c - - make_local_array_variable: added second argument; if non-zero, - function will return an existing local associative array variable - instead of insisting on an indexed array - -variable.h,subst.c - - make_local_array_variable: changed prototype and caller - -builtins/declare.def - - declare_internal: add second arg to call to make_local_array_variable; - making_array_special, which indicates we're processing an - assignment like declare a[b]=c. Fixes seg fault resulting from - a being an already-declared local associative array variable in a - function. Ubuntu bash bug 928900. - - 2/14 - ---- - -execute_cmd.c - - execute_command_internal: if redirections into or out of a loop fail, - don't try to free ofifo_list unless saved_fifo is non-zero. It's - only valid if saved_fifo is set - - 2/15 - ---- -{arrayfunc,braces,variables}.c - - last_command_exit_value: make sure it's set before any calls to - report_error, since -e will cause that to exit the shell - -builtins/common.c - - get_job_by_name: call internal_error instead of report_error so this - doesn't exit the shell - - 2/18 - ---- -builtins/evalstring.c - - parse_and_execute: make sure the file descriptor to be redirected to - is 1 before calling cat_file. One fix for bug reported by Dan Douglas - - -parse.y - - read_token_word: don't return NUMBER if a string of all digits - resolves to a number that overflows the bounds of an intmax_t. - Other fix for bug reported by Dan Douglas - - 2/19 - ---- -lib/sh/strtrans.c - - ansicstr: use 0x7f as the boundary for characters that translate - directly from ASCII to unicode (\u and \U escapes) instead of - UCHAR_MAX, since everything >= 0x80 requires more than one byte. - Bug and fix from John Kearney - -builtins/printf.def - - tescape: ditto for printf \u and \U escape sequences - - 2/20 - ---- -lib/sh/unicode.c - - u32toutf8: fix to handle encodings up to six bytes long correctly - (though technically UTF-8 only has characters up to 4 bytes long). - Report and fix from John Kearney - - u32toutf8: first argument is now an unsigned 32-bit quantity, - changed callers (u32cconv) to pass c instead of wc - - u32reset: new function, resets local static state to uninitialized - (locale information, currently) - -locale.c - - call u32reset whenever LC_CTYPE/LC_ALL/LANG is changed to reset the - cached locale information used by u32cconv. From a report from - John Kearney - - 2/21 - ---- -doc/{bash,builtins}.1 - - minor changes from Bjarni Ingi Gislason - -lib/sh/unicode.c - - u32cconv: only assume you can directly call wctomb on the passed - value if __STDC_ISO_10646__ is defined and the value is <= - 0x7fffffff - - stub_charset: return locale as default instead of "ASCII", let - rest of code decide what to do with it - -lib/readline/parens.c - - _rl_enable_paren_matching: make paren matching work in vi insert - mode. Bug report from - - 2/22 - ---- -lib/sh/shquote.c - - sh_backslash_quote: quote tilde in places where it would be - expanded. From a report from John Kearney - - 2/23 - ---- -execute_cmd.c - - execute_pipeline: wrap the discard_unwind_frame call in #ifdef - JOB_CONTROL, since the frame is only created if JOB_CONTROL is - defined. Bug and fix from Doug Kehn - - 2/25 - ---- -error.c - - report_error: make sure last_command_exit_value is non-zero before - we call exit_shell, since the exit trap may reference it. Call - exit_shell with last_command_exit_value to allow exit statuses - other than 1 - -unicode.c - - stub_charset: use local static buffer to hold charset, don't change - value returned by get_locale_var. Based on idea and code from - John Kearney - - u32toutf16: function to convert unsigned 32-bit value (unicode) to - UTF-16. From John Kearney - - u32cconv: call u32toutf16 if __STDC_ISO_10646__ defined and wchar_t - is two bytes, send result to wcstombs, return if not encoding error. - From John Kearney - - diff --git a/CWRU/POSIX.NOTES.old b/CWRU/POSIX.NOTES.old deleted file mode 100644 index 1707ab10c..000000000 --- a/CWRU/POSIX.NOTES.old +++ /dev/null @@ -1,82 +0,0 @@ -Starting bash with the `--posix' command-line option or executing -`set -o posix' while bash is running will cause bash to conform more -closely to the Posix.2 standard by changing the behavior to match that -specified by Posix.2 in areas where the bash default differs. - -The following list is what's changed when `posix mode' is in effect: - -1. When a command in the hash table no longer exists, bash will re-search - $PATH to find the new location. This is also available with - `shopt -s checkhash'. - -2. The >& redirection does not redirect stdout and stderr. - -3. The message printed by the job control code and builtins when a job - exits with a non-zero status is `Done(status)'. - -4. Reserved words may not be aliased. - -5. The Posix.2 PS1 and PS2 expansions of `!' -> history number and - `!!' -> `!' are enabled, and parameter expansion is performed on - the value regardless of the setting of the `promptvars' option. - -6. Interactive comments are enabled by default. (Note that bash has - them on by default anyway.) - -7. The Posix.2 startup files are executed ($ENV) rather than the normal - bash files. - -8. Tilde expansion is only performed on assignments preceding a command - name, rather than on all assignment statements on the line. - -9. The default history file is ~/.sh_history (default value of $HISTFILE). - -10. The output of `kill -l' prints all the signal names on a single line, - separated by spaces. - -11. Non-interactive shells exit if `file' in `. file' is not found. - -12. Redirection operators do not perform pathname expansion on the word - in the redirection unless the shell is interactive - -13. Function names must be valid shell identifiers. That is, they may not - contain characters other than letters, digits, and underscores, and - may not start with a digit. Declaring a function with an illegal name - causes a fatal syntax error in non-interactive shells. - -14. Posix.2 `special' builtins are found before shell functions during command - lookup. - -15. If a Posix.2 special builtin returns an error status, a non-interactive - shell exits. The fatal errors are those listed in the POSIX.2 standard, - and include things like passing incorrect options, redirection errors, - variable assignment errors for assignments preceding the command name, - and so on. - -16. The environment passed to executed commands is not sorted. Neither is - the output of `set'. This is not strictly Posix.2 behavior, but sh - does it this way. Ksh does not. It's not necessary to sort the - environment; no program should rely on it being sorted. - -17. If the `cd' builtin finds a directory to change to using $CDPATH, the - value it assigns to $PWD does not contain any symbolic links, as if - `cd -P' had been executed. - -18. A non-interactive shell exits with an error status if a variable - assignment error occurs when no command name follows the assignment - statements. A variable assignment error occurs, for example, when - trying to assign a value to a read-only variable. - -19. A non-interactive shell exits with an error status if the iteration - variable in a for statement or the selection variable in a select - statement is a read-only variable. - -20. Process substitution is not available. - -21. Assignment statements preceding POSIX.2 `special' builtins persist in - the shell environment after the builtin completes. - -There is other Posix.2 behavior that bash does not implement. Specifically: - -1. Assignment statements affect the execution environment of all builtins, - not just special ones. diff --git a/CWRU/old/set.def.save b/CWRU/old/set.def.save deleted file mode 100644 index 87b78d7cc..000000000 --- a/CWRU/old/set.def.save +++ /dev/null @@ -1,544 +0,0 @@ -This file is set.def, from which is created set.c. -It implements the "set" and "unset" builtins in Bash. - -Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc. - -This file is part of GNU Bash, the Bourne Again SHell. - -Bash is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 1, or (at your option) any later -version. - -Bash is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License along -with Bash; see the file COPYING. If not, write to the Free Software -Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. - -$PRODUCES set.c - -#include -#include "../shell.h" -#include "../flags.h" - -#include "bashgetopt.h" - -extern int interactive; -extern int noclobber, posixly_correct; -#if defined (READLINE) -extern int rl_editing_mode, no_line_editing; -#endif /* READLINE */ - -$BUILTIN set -$FUNCTION set_builtin -$SHORT_DOC set [--abefhkmnptuvxldBCHP] [-o option] [arg ...] - -a Mark variables which are modified or created for export. - -b Notify of job termination immediately. - -e Exit immediately if a command exits with a non-zero status. - -f Disable file name generation (globbing). - -h Locate and remember function commands as functions are - defined. Function commands are normally looked up when - the function is executed. - -i Force the shell to be an "interactive" one. Interactive shells - always read `~/.bashrc' on startup. - -k All keyword arguments are placed in the environment for a - command, not just those that precede the command name. - -m Job control is enabled. - -n Read commands but do not execute them. - -o option-name - Set the variable corresponding to option-name: - allexport same as -a - braceexpand same as -B -#if defined (READLINE) - emacs use an emacs-style line editing interface -#endif /* READLINE */ - errexit same as -e - histexpand same as -H - ignoreeof the shell will not exit upon reading EOF - interactive-comments - allow comments to appear in interactive commands - monitor same as -m - noclobber disallow redirection to existing files - noexec same as -n - noglob same as -f - nohash same as -d - notify save as -b - nounset same as -u - physical same as -P - posix change the behavior of bash where the default - operation differs from the 1003.2 standard to - match the standard - privileged same as -p - verbose same as -v -#if defined (READLINE) - vi use a vi-style line editing interface -#endif /* READLINE */ - xtrace same as -x - -p Turned on whenever the real and effective user ids do not match. - Disables processing of the $ENV file and importing of shell - functions. Turning this option off causes the effective uid and - gid to be set to the real uid and gid. - -t Exit after reading and executing one command. - -u Treat unset variables as an error when substituting. - -v Print shell input lines as they are read. - -x Print commands and their arguments as they are executed. - -l Save and restore the binding of the NAME in a FOR command. - -d Disable the hashing of commands that are looked up for execution. - Normally, commands are remembered in a hash table, and once - found, do not have to be looked up again. -#if defined (BRACE_EXPANSION) - -B the shell will perform brace expansion -#endif /* BRACE_EXPANSION */ -#if defined (BANG_HISTORY) - -H Enable ! style history substitution. This flag is on - by default. -#endif /* BANG_HISTORY */ - -C If set, disallow existing regular files to be overwritten - by redirection of output. - -P If set, do not follow symbolic links when executing commands - such as cd which change the current directory. - -Using + rather than - causes these flags to be turned off. The -flags can also be used upon invocation of the shell. The current -set of flags may be found in $-. The remaining n ARGs are positional -parameters and are assigned, in order, to $1, $2, .. $n. If no -ARGs are given, all shell variables are printed. -$END - -/* An a-list used to match long options for set -o to the corresponding - option letter. */ -struct { - char *name; - int letter; -} o_options[] = { - { "allexport", 'a' }, -#if defined (BRACE_EXPANSION) - { "braceexpand",'B' }, -#endif - { "errexit", 'e' }, - { "histexpand", 'H' }, - { "monitor", 'm' }, - { "noexec", 'n' }, - { "noglob", 'f' }, - { "nohash", 'd' }, -#if defined (JOB_CONTROL) - { "notify", 'b' }, -#endif /* JOB_CONTROL */ - {"nounset", 'u' }, - {"physical", 'P' }, - {"privileged", 'p' }, - {"verbose", 'v' }, - {"xtrace", 'x' }, - {(char *)NULL, 0}, -}; - -#define MINUS_O_FORMAT "%-15s\t%s\n" - -void -list_minus_o_opts () -{ - register int i; - char *on = "on", *off = "off"; - - printf (MINUS_O_FORMAT, "noclobber", (noclobber == 1) ? on : off); - - if (find_variable ("ignoreeof") || find_variable ("IGNOREEOF")) - printf (MINUS_O_FORMAT, "ignoreeof", on); - else - printf (MINUS_O_FORMAT, "ignoreeof", off); - - printf (MINUS_O_FORMAT, "interactive-comments", - interactive_comments ? on : off); - - printf (MINUS_O_FORMAT, "posix", posixly_correct ? on : off); - -#if defined (READLINE) - if (no_line_editing) - { - printf (MINUS_O_FORMAT, "emacs", off); - printf (MINUS_O_FORMAT, "vi", off); - } - else - { - /* Magic. This code `knows' how readline handles rl_editing_mode. */ - printf (MINUS_O_FORMAT, "emacs", (rl_editing_mode == 1) ? on : off); - printf (MINUS_O_FORMAT, "vi", (rl_editing_mode == 0) ? on : off); - } -#endif /* READLINE */ - - for (i = 0; o_options[i].name; i++) - { - int *on_or_off, zero = 0; - - on_or_off = find_flag (o_options[i].letter); - if (on_or_off == FLAG_UNKNOWN) - on_or_off = &zero; - printf (MINUS_O_FORMAT, o_options[i].name, (*on_or_off == 1) ? on : off); - } -} - -set_minus_o_option (on_or_off, option_name) - int on_or_off; - char *option_name; -{ - int option_char = -1; - - if (STREQ (option_name, "noclobber")) - { - if (on_or_off == FLAG_ON) - bind_variable ("noclobber", ""); - else - unbind_variable ("noclobber"); - stupidly_hack_special_variables ("noclobber"); - } - else if (STREQ (option_name, "ignoreeof")) - { - unbind_variable ("ignoreeof"); - unbind_variable ("IGNOREEOF"); - if (on_or_off == FLAG_ON) - bind_variable ("IGNOREEOF", "10"); - stupidly_hack_special_variables ("IGNOREEOF"); - } - -#if defined (READLINE) - else if ((STREQ (option_name, "emacs")) || (STREQ (option_name, "vi"))) - { - if (on_or_off == FLAG_ON) - { - rl_variable_bind ("editing-mode", option_name); - - if (interactive) - with_input_from_stdin (); - no_line_editing = 0; - } - else - { - int isemacs = (rl_editing_mode == 1); - if ((isemacs && STREQ (option_name, "emacs")) || - (!isemacs && STREQ (option_name, "vi"))) - { - if (interactive) - with_input_from_stream (stdin, "stdin"); - no_line_editing = 1; - } - else - builtin_error ("not in %s editing mode", option_name); - } - } -#endif /* READLINE */ - else if (STREQ (option_name, "interactive-comments")) - interactive_comments = (on_or_off == FLAG_ON); - else if (STREQ (option_name, "posix")) - { - posixly_correct = (on_or_off == FLAG_ON); - unbind_variable ("POSIXLY_CORRECT"); - unbind_variable ("POSIX_PEDANTIC"); - if (on_or_off == FLAG_ON) - { - bind_variable ("POSIXLY_CORRECT", ""); - stupidly_hack_special_variables ("POSIXLY_CORRECT"); - } - } - else - { - register int i; - for (i = 0; o_options[i].name; i++) - { - if (STREQ (option_name, o_options[i].name)) - { - option_char = o_options[i].letter; - break; - } - } - if (option_char == -1) - { - builtin_error ("%s: unknown option name", option_name); - return (EXECUTION_FAILURE); - } - if (change_flag (option_char, on_or_off) == FLAG_ERROR) - { - bad_option (option_name); - return (EXECUTION_FAILURE); - } - } - return (EXECUTION_SUCCESS); -} - -/* Set some flags from the word values in the input list. If LIST is empty, - then print out the values of the variables instead. If LIST contains - non-flags, then set $1 - $9 to the successive words of LIST. */ -set_builtin (list) - WORD_LIST *list; -{ - int on_or_off, flag_name, force_assignment = 0; - - if (!list) - { - SHELL_VAR **vars; - - vars = all_shell_variables (); - if (vars) - { - print_var_list (vars); - free (vars); - } - - vars = all_shell_functions (); - if (vars) - { - print_var_list (vars); - free (vars); - } - - return (EXECUTION_SUCCESS); - } - - /* Check validity of flag arguments. */ - if (*list->word->word == '-' || *list->word->word == '+') - { - register char *arg; - WORD_LIST *save_list = list; - - while (list && (arg = list->word->word)) - { - char c; - - if (arg[0] != '-' && arg[0] != '+') - break; - - /* `-' or `--' signifies end of flag arguments. */ - if (arg[0] == '-' && - (!arg[1] || (arg[1] == '-' && !arg[2]))) - break; - - while (c = *++arg) - { - if (find_flag (c) == FLAG_UNKNOWN && c != 'o') - { - char s[2]; - s[0] = c; s[1] = '\0'; - bad_option (s); - if (c == '?') - builtin_usage (); - return (c == '?' ? EXECUTION_SUCCESS : EXECUTION_FAILURE); - } - } - list = list->next; - } - list = save_list; - } - - /* Do the set command. While the list consists of words starting with - '-' or '+' treat them as flags, otherwise, start assigning them to - $1 ... $n. */ - while (list) - { - char *string = list->word->word; - - /* If the argument is `--' or `-' then signal the end of the list - and remember the remaining arguments. */ - if (string[0] == '-' && (!string[1] || (string[1] == '-' && !string[2]))) - { - list = list->next; - - /* `set --' unsets the positional parameters. */ - if (string[1] == '-') - force_assignment = 1; - - /* Until told differently, the old shell behaviour of - `set - [arg ...]' being equivalent to `set +xv [arg ...]' - stands. Posix.2 says the behaviour is marked as obsolescent. */ - else - { - change_flag ('x', '+'); - change_flag ('v', '+'); - } - - break; - } - - if ((on_or_off = *string) && - (on_or_off == '-' || on_or_off == '+')) - { - int i = 1; - while (flag_name = string[i++]) - { - if (flag_name == '?') - { - builtin_usage (); - return (EXECUTION_SUCCESS); - } - else if (flag_name == 'o') /* -+o option-name */ - { - char *option_name; - WORD_LIST *opt; - - opt = list->next; - - if (!opt) - { - list_minus_o_opts (); - continue; - } - - option_name = opt->word->word; - - if (!option_name || !*option_name || (*option_name == '-')) - { - list_minus_o_opts (); - continue; - } - list = list->next; /* Skip over option name. */ - - if (set_minus_o_option (on_or_off, option_name) != EXECUTION_SUCCESS) - return (EXECUTION_FAILURE); - } - else - { - if (change_flag (flag_name, on_or_off) == FLAG_ERROR) - { - char opt[3]; - opt[0] = on_or_off; - opt[1] = flag_name; - opt[2] = '\0'; - bad_option (opt); - builtin_usage (); - return (EXECUTION_FAILURE); - } - } - } - } - else - { - break; - } - list = list->next; - } - - /* Assigning $1 ... $n */ - if (list || force_assignment) - remember_args (list, 1); - return (EXECUTION_SUCCESS); -} - -$BUILTIN unset -$FUNCTION unset_builtin -$SHORT_DOC unset [-f] [-v] [name ...] -For each NAME, remove the corresponding variable or function. Given -the `-v', unset will only act on variables. Given the `-f' flag, -unset will only act on functions. With neither flag, unset first -tries to unset a variable, and if that fails, then tries to unset a -function. Some variables (such as PATH and IFS) cannot be unset; also -see readonly. -$END - -#define NEXT_VARIABLE() any_failed++; list = list->next; continue; - -unset_builtin (list) - WORD_LIST *list; -{ - int unset_function, unset_variable, unset_array, opt, any_failed; - char *name; - - unset_function = unset_variable = unset_array = any_failed = 0; - - reset_internal_getopt (); - while ((opt = internal_getopt (list, "fv")) != -1) - { - switch (opt) - { - case 'f': - unset_function = 1; - break; - case 'v': - unset_variable = 1; - break; - default: - builtin_usage (); - return (EXECUTION_FAILURE); - } - } - - list = loptend; - - if (unset_function && unset_variable) - { - builtin_error ("cannot simultaneously unset a function and a variable"); - return (EXECUTION_FAILURE); - } - - while (list) - { - SHELL_VAR *var; - int tem; -#if defined (ARRAY_VARS) - char *t; -#endif - - name = list->word->word; - -#if defined (ARRAY_VARS) - if (!unset_function && valid_array_reference (name)) - { - t = strchr (name, '['); - *t++ = '\0'; - unset_array++; - } -#endif - - var = unset_function ? find_function (name) : find_variable (name); - - if (var && !unset_function && non_unsettable_p (var)) - { - builtin_error ("%s: cannot unset", name); - NEXT_VARIABLE (); - } - - /* Posix.2 says that unsetting readonly variables is an error. */ - if (var && readonly_p (var)) - { - builtin_error ("%s: cannot unset: readonly %s", - name, unset_function ? "function" : "variable"); - NEXT_VARIABLE (); - } - - /* Unless the -f option is supplied, the name refers to a variable. */ -#if defined (ARRAY_VARS) - if (var && unset_array) - { - if (array_p (var) == 0) - { - builtin_error ("%s: not an array variable", name); - NEXT_VARIABLE (); - } - else - tem = unbind_array_element (var, t); - } - else -#endif /* ARRAY_VARS */ - tem = makunbound (name, unset_function ? shell_functions : shell_variables); - - /* This is what Posix.2 draft 11+ says. ``If neither -f nor -v - is specified, the name refers to a variable; if a variable by - that name does not exist, a function by that name, if any, - shall be unset.'' */ - if ((tem == -1) && !unset_function && !unset_variable) - tem = makunbound (name, shell_functions); - - if (tem == -1) - any_failed++; - else if (!unset_function) - stupidly_hack_special_variables (name); - - list = list->next; - } - - if (any_failed) - return (EXECUTION_FAILURE); - else - return (EXECUTION_SUCCESS); -} diff --git a/CWRU/save/unwind_prot.h.save b/CWRU/save/unwind_prot.h.save deleted file mode 100644 index 998fd72b6..000000000 --- a/CWRU/save/unwind_prot.h.save +++ /dev/null @@ -1,50 +0,0 @@ -/* unwind_prot.h - Macros and functions for hacking unwind protection. */ - -/* Copyright (C) 1993 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software; you can redistribute it and/or modify it under - the terms of the GNU General Public License as published by the Free - Software Foundation; either version 2, or (at your option) any later - version. - - Bash is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - for more details. - - You should have received a copy of the GNU General Public License along - with Bash; see the file COPYING. If not, write to the Free Software - Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#if !defined (_UNWIND_PROT_H) -#define _UNWIND_PROT_H - -/* Run a function without interrupts. */ -extern void begin_unwind_frame (); -extern void discard_unwind_frame (); -extern void run_unwind_frame (); -extern void add_unwind_protect (); -extern void remove_unwind_protect (); -extern void run_unwind_protects (); -extern void unwind_protect_var (); - -/* Define for people who like their code to look a certain way. */ -#define end_unwind_frame() - -/* How to protect an integer. */ -#define unwind_protect_int(X) unwind_protect_var (&(X), (char *)(X), sizeof (int)) - -/* How to protect a pointer to a string. */ -#define unwind_protect_string(X) \ - unwind_protect_var ((int *)&(X), (X), sizeof (char *)) - -/* How to protect any old pointer. */ -#define unwind_protect_pointer(X) unwind_protect_string (X) - -/* How to protect the contents of a jmp_buf. */ -#define unwind_protect_jmp_buf(X) \ - unwind_protect_var ((int *)(X), (char *)(X), sizeof (procenv_t)) - -#endif /* _UNWIND_PROT_H */ diff --git a/MANIFEST~ b/MANIFEST~ deleted file mode 100644 index c974329af..000000000 --- a/MANIFEST~ +++ /dev/null @@ -1,1195 +0,0 @@ -# -# Master distribution manifest for bash -# -# -# Filename type -# -CWRU d -CWRU/misc d -builtins d -cross-build d -doc d -examples d -examples/obashdb d -examples/complete d -examples/functions d -examples/scripts d -examples/scripts.v2 d -examples/scripts.noah d -examples/startup-files d -examples/startup-files/apple d -examples/misc d -examples/loadables d -examples/loadables/perl d -include d -lib d -lib/glob d -lib/glob/doc d -lib/intl d -lib/malloc d -lib/readline d -lib/readline/doc d -lib/readline/examples d -lib/sh d -lib/termcap d -lib/tilde d -po d -support d -tests d -tests/misc d -ABOUT-NLS f -ChangeLog s CWRU/changelog -CHANGES f -COMPAT f -COPYING f -INSTALL f -MANIFEST f -NEWS f -NOTES f -POSIX f -README f -RBASH f -AUTHORS f -Y2K f -configure.in f -configure f 755 -Makefile.in f -config-top.h f -config-bot.h f -config.h.in f -aclocal.m4 f -array.c f -arrayfunc.c f -assoc.c f -eval.c f -print_cmd.c f -general.c f -list.c f -locale.c f -stringlib.c f -variables.c f -make_cmd.c f -copy_cmd.c f -unwind_prot.c f -dispose_cmd.c f -bashhist.c f -hashcmd.c f -hashlib.c f -parse.y f -pathexp.c f -subst.c f -shell.c f -trap.c f -sig.c f -siglist.c f -version.c f -flags.c f -jobs.c f -input.c f -mailcheck.c f -test.c f -expr.c f -alias.c f -execute_cmd.c f -findcmd.c f -redir.c f -bashline.c f -braces.c f -bracecomp.c f -nojobs.c f -error.c f -xmalloc.c f -pcomplete.c f -pcomplib.c f -mksyntax.c f -alias.h f -builtins.h f -bashhist.h f -bashline.h f -conftypes.h f -patchlevel.h f -variables.h f -array.h f -arrayfunc.h f -assoc.h f -jobs.h f -findcmd.h f -hashlib.h f -quit.h f -flags.h f -shell.h f -syntax.h f -pathexp.h f -parser.h f -pcomplete.h f -sig.h f -test.h f -trap.h f -general.h f -unwind_prot.h f -input.h f 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${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h -stringlib.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h -stringlib.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -stringlib.o: make_cmd.h subst.h sig.h pathnames.h externs.h -stringlib.o: ${GLOB_LIBSRC}/glob.h ${GLOB_LIBSRC}/strmatch.h -subst.o: config.h bashtypes.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h ${BASHINCDIR}/posixstat.h -subst.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h -subst.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h -subst.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -subst.o: make_cmd.h subst.h sig.h pathnames.h externs.h parser.h -subst.o: flags.h jobs.h siglist.h execute_cmd.h ${BASHINCDIR}/filecntl.h trap.h pathexp.h -subst.o: mailcheck.h input.h $(DEFSRC)/getopt.h $(DEFSRC)/common.h -subst.o: bashline.h bashhist.h ${GLOB_LIBSRC}/strmatch.h -subst.o: ${BASHINCDIR}/chartypes.h -subst.o: ${BASHINCDIR}/shmbutil.h ${BASHINCDIR}/shmbchar.h -subst.o: ${DEFDIR}/builtext.h -test.o: bashtypes.h ${BASHINCDIR}/posixstat.h ${BASHINCDIR}/filecntl.h -test.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h -test.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h -test.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -test.o: make_cmd.h subst.h sig.h pathnames.h externs.h test.h -test.o: ${DEFSRC}/common.h -trap.o: config.h bashtypes.h trap.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -trap.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h -trap.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h -trap.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -trap.o: make_cmd.h subst.h sig.h pathnames.h externs.h -trap.o: signames.h $(DEFSRC)/common.h -trap.o: ${DEFDIR}/builtext.h jobs.h -unwind_prot.o: config.h bashtypes.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h command.h ${BASHINCDIR}/stdc.h -unwind_prot.o: general.h xmalloc.h unwind_prot.h quit.h sig.h -variables.o: config.h bashtypes.h ${BASHINCDIR}/posixstat.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -variables.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h -variables.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h -variables.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -variables.o: make_cmd.h subst.h sig.h pathnames.h externs.h -variables.o: flags.h execute_cmd.h mailcheck.h input.h $(DEFSRC)/common.h -variables.o: findcmd.h bashhist.h hashcmd.h pathexp.h -variables.o: pcomplete.h ${BASHINCDIR}/chartypes.h -variables.o: ${BASHINCDIR}/posixtime.h assoc.h -version.o: conftypes.h patchlevel.h version.h -xmalloc.o: config.h bashtypes.h ${BASHINCDIR}/ansi_stdlib.h error.h - -# job control - -jobs.o: config.h bashtypes.h trap.h ${BASHINCDIR}/filecntl.h input.h ${BASHINCDIR}/shtty.h -jobs.o: bashansi.h ${BASHINCDIR}/ansi_stdlib.h -jobs.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h -jobs.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h -jobs.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -jobs.o: execute_cmd.h make_cmd.h subst.h sig.h pathnames.h externs.h -jobs.o: jobs.h flags.h $(DEFSRC)/common.h $(DEFDIR)/builtext.h -jobs.o: ${BASHINCDIR}/posixwait.h ${BASHINCDIR}/unionwait.h -jobs.o: ${BASHINCDIR}/posixtime.h -nojobs.o: config.h bashtypes.h ${BASHINCDIR}/filecntl.h bashjmp.h ${BASHINCDIR}/posixjmp.h -nojobs.o: command.h ${BASHINCDIR}/stdc.h general.h xmalloc.h jobs.h quit.h siglist.h externs.h -nojobs.o: sig.h error.h ${BASHINCDIR}/shtty.h input.h -nojobs.o: $(DEFDIR)/builtext.h - -# shell features that may be compiled in - -array.o: config.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -array.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h -array.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h -array.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -array.o: make_cmd.h subst.h sig.h pathnames.h externs.h -array.o: $(DEFSRC)/common.h -arrayfunc.o: config.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -arrayfunc.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h -arrayfunc.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h -arrayfunc.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -arrayfunc.o: make_cmd.h subst.h sig.h pathnames.h externs.h pathexp.h -arrayfunc.o: $(DEFSRC)/common.h -arrayfunc.o: ${BASHINCDIR}/shmbutil.h ${BASHINCDIR}/shmbchar.h -assoc.o: config.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -assoc.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h -assoc.o: command.h ${BASHINCDIR}/stdc.h error.h -assoc.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h -assoc.o: assoc.h hashlib.h -assoc.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -assoc.o: make_cmd.h subst.h sig.h pathnames.h externs.h -assoc.o: $(DEFSRC)/common.h -braces.o: config.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -braces.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h -braces.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h -braces.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -braces.o: make_cmd.h subst.h sig.h pathnames.h externs.h -braces.o: ${BASHINCDIR}/shmbutil.h ${BASHINCDIR}/shmbchar.h -alias.o: config.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h command.h ${BASHINCDIR}/stdc.h -alias.o: general.h xmalloc.h bashtypes.h externs.h alias.h -alias.o: pcomplete.h -alias.o: ${BASHINCDIR}/chartypes.h - -pcomplib.o: config.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h bashtypes.h -pcomplib.o: ${BASHINCDIR}/stdc.h hashlib.h pcomplete.h shell.h syntax.h -pcomplib.o: bashjmp.h command.h general.h xmalloc.h error.h variables.h arrayfunc.h conftypes.h quit.h -pcomplib.o: unwind_prot.h dispose_cmd.h make_cmd.h subst.h sig.h pathnames.h -pcomplib.o: externs.h ${BASHINCDIR}/maxpath.h - -pcomplete.o: config.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h bashtypes.h -pcomplete.o: ${BASHINCDIR}/stdc.h hashlib.h pcomplete.h shell.h syntax.h -pcomplete.o: bashjmp.h command.h general.h xmalloc.h error.h variables.h arrayfunc.h conftypes.h quit.h -pcomplete.o: unwind_prot.h dispose_cmd.h make_cmd.h subst.h sig.h pathnames.h -pcomplete.o: externs.h ${BASHINCDIR}/maxpath.h execute_cmd.h - -# library support files - -bashhist.o: config.h bashtypes.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h ${BASHINCDIR}/posixstat.h -bashhist.o: ${BASHINCDIR}/filecntl.h -bashhist.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h -bashhist.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h -bashhist.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -bashhist.o: make_cmd.h subst.h sig.h pathnames.h externs.h -bashhist.o: flags.h input.h parser.h pathexp.h $(DEFSRC)/common.h bashline.h -bashhist.o: $(GLOB_LIBSRC)/strmatch.h -bashline.o: config.h bashtypes.h ${BASHINCDIR}/posixstat.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -bashline.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h -bashline.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h -bashline.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -bashline.o: make_cmd.h subst.h sig.h pathnames.h externs.h -bashline.o: builtins.h bashhist.h bashline.h execute_cmd.h findcmd.h pathexp.h -bashline.o: $(DEFSRC)/common.h $(GLOB_LIBSRC)/glob.h alias.h -bashline.o: pcomplete.h ${BASHINCDIR}/chartypes.h input.h -bashline.o: ${BASHINCDIR}/shmbutil.h ${BASHINCDIR}/shmbchar.h -bracecomp.o: config.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -bracecomp.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h -bracecomp.o: command.h ${BASHINCDIR}/stdc.h error.h -bracecomp.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h -bracecomp.o: array.h hashlib.h alias.h builtins.h -bracecomp.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -bracecomp.o: make_cmd.h subst.h sig.h pathnames.h externs.h - -# library dependencies - -bashline.o: $(RL_LIBSRC)/rlconf.h -bashline.o: $(RL_LIBSRC)/keymaps.h $(RL_LIBSRC)/rlstdc.h -bashline.o: $(RL_LIBSRC)/chardefs.h $(RL_LIBSRC)/readline.h -bracecomp.o: $(RL_LIBSRC)/keymaps.h $(RL_LIBSRC)/chardefs.h -bracecomp.o: $(RL_LIBSRC)/readline.h $(RL_LIBSRC)/rlstdc.h -y.tab.o: $(RL_LIBSRC)/keymaps.h $(RL_LIBSRC)/chardefs.h -y.tab.o: $(RL_LIBSRC)/readline.h $(RL_LIBSRC)/rlstdc.h -subst.o: $(RL_LIBSRC)/keymaps.h $(RL_LIBSRC)/chardefs.h -subst.o: $(RL_LIBSRC)/readline.h $(RL_LIBSRC)/rlstdc.h - -shell.o: $(HIST_LIBSRC)/history.h $(HIST_LIBSRC)/rlstdc.h -subst.o: $(HIST_LIBSRC)/history.h $(HIST_LIBSRC)/rlstdc.h -bashline.o: $(HIST_LIBSRC)/history.h $(HIST_LIBSRC)/rlstdc.h -bashhist.o: $(HIST_LIBSRC)/history.h $(HIST_LIBSRC)/rlstdc.h -y.tab.o: $(HIST_LIBSRC)/history.h $(HIST_LIBSRC)/rlstdc.h - -execute_cmd.o: $(TILDE_LIBSRC)/tilde.h -general.o: $(TILDE_LIBSRC)/tilde.h -mailcheck.o: $(TILDE_LIBSRC)/tilde.h -shell.o: $(TILDE_LIBSRC)/tilde.h -subst.o: $(TILDE_LIBSRC)/tilde.h -variables.o: $(TILDE_LIBSRC)/tilde.h - -# libintl dependencies -arrayfunc.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -bashhist.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -bashline.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -braces.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -error.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -eval.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -execute_cmd.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -expr.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -general.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -input.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -jobs.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -mailcheck.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -make_cmd.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -nojobs.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -y.tab.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -pcomplete.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -pcomplib.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -print_cmd.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -redir.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -shell.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -sig.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -siglist.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -subst.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -test.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -trap.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -variables.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -version.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -xmalloc.o: bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h - -signames.o: config.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h - -# XXX - dependencies checked through here - -# builtin c sources -builtins/bashgetopt.o: config.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -builtins/bashgetopt.o: shell.h syntax.h config.h bashjmp.h command.h general.h xmalloc.h error.h -builtins/bashgetopt.o: variables.h arrayfunc.h conftypes.h quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -builtins/bashgetopt.o: make_cmd.h subst.h sig.h pathnames.h externs.h -builtins/bashgetopt.o: $(DEFSRC)/common.h -builtins/bashgetopt.o: ${BASHINCDIR}/chartypes.h -builtins/common.o: bashtypes.h ${BASHINCDIR}/posixstat.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -builtins/common.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h command.h -builtins/common.o: ${BASHINCDIR}/memalloc.h variables.h arrayfunc.h conftypes.h input.h siglist.h -builtins/common.o: quit.h unwind_prot.h ${BASHINCDIR}/maxpath.h jobs.h builtins.h -builtins/common.o: dispose_cmd.h make_cmd.h subst.h externs.h bashhist.h -builtins/common.o: execute_cmd.h ${BASHINCDIR}/stdc.h general.h xmalloc.h error.h pathnames.h -builtins/common.o: ${DEFDIR}/builtext.h -builtins/common.o: ${BASHINCDIR}/chartypes.h -builtins/evalfile.o: bashtypes.h ${BASHINCDIR}/posixstat.h ${BASHINCDIR}/filecntl.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -builtins/evalfile.o: shell.h syntax.h config.h bashjmp.h command.h general.h xmalloc.h error.h -builtins/evalfile.o: variables.h arrayfunc.h conftypes.h quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -builtins/evalfile.o: make_cmd.h subst.h sig.h pathnames.h externs.h -builtins/evalfile.o: jobs.h builtins.h flags.h input.h execute_cmd.h -builtins/evalfile.o: bashhist.h $(DEFSRC)/common.h -builtins/evalstring.o: config.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -builtins/evalstring.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h command.h siglist.h -builtins/evalstring.o: ${BASHINCDIR}/memalloc.h variables.h arrayfunc.h conftypes.h input.h -builtins/evalstring.o: quit.h unwind_prot.h ${BASHINCDIR}/maxpath.h jobs.h builtins.h -builtins/evalstring.o: dispose_cmd.h make_cmd.h subst.h externs.h -builtins/evalstring.o: jobs.h builtins.h flags.h input.h execute_cmd.h -builtins/evalstring.o: bashhist.h $(DEFSRC)/common.h pathnames.h -builtins/getopt.o: config.h ${BASHINCDIR}/memalloc.h -builtins/getopt.o: shell.h syntax.h bashjmp.h command.h general.h xmalloc.h error.h -builtins/getopt.o: variables.h arrayfunc.h conftypes.h quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h -builtins/getopt.o: make_cmd.h subst.h sig.h pathnames.h externs.h -builtins/getopt.o: $(DEFSRC)/getopt.h -builtins/mkbuiltins.o: config.h bashtypes.h ${BASHINCDIR}/posixstat.h ${BASHINCDIR}/filecntl.h -builtins/mkbuiltins.o: bashansi.h ${BASHINCDIR}/ansi_stdlib.h - -# builtin def files -builtins/alias.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/alias.o: quit.h $(DEFSRC)/common.h pathnames.h -builtins/alias.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h command.h ${BASHINCDIR}/stdc.h unwind_prot.h -builtins/alias.o: dispose_cmd.h make_cmd.h subst.h externs.h variables.h arrayfunc.h conftypes.h -builtins/bind.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/bind.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/bind.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/bind.o: $(DEFSRC)/bashgetopt.h pathnames.h -builtins/break.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/break.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/break.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/break.o: pathnames.h -builtins/builtin.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/builtin.o: quit.h $(DEFSRC)/common.h $(DEFSRC)/bashgetopt.h -builtins/builtin.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/builtin.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/builtin.o: pathnames.h -builtins/caller.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/caller.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/caller.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/caller.o: $(DEFSRC)/common.h quit.h -builtins/caller.o: ${BASHINCDIR}/chartypes.h bashtypes.h -builtins/caller.o: ${DEFDIR}/builtext.h pathnames.h -builtins/cd.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/cd.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/cd.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/cd.o: $(DEFSRC)/common.h quit.h pathnames.h -builtins/command.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/command.o: quit.h $(DEFSRC)/bashgetopt.h -builtins/command.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/command.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h pathnames.h -builtins/declare.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/declare.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/declare.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/declare.o: $(DEFSRC)/bashgetopt.h pathnames.h -builtins/echo.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/echo.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/echo.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/echo.o: pathnames.h -builtins/enable.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/enable.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/enable.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/enable.o: pcomplete.h pathnames.h -builtins/eval.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/eval.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/eval.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/eval.o: pathnames.h -builtins/exec.o: bashtypes.h pathnames.h -builtins/exec.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/exec.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/exec.o: dispose_cmd.h make_cmd.h subst.h externs.h execute_cmd.h -builtins/exec.o: findcmd.h flags.h quit.h $(DEFSRC)/common.h ${BASHINCDIR}/stdc.h -builtins/exec.o: pathnames.h -builtins/exit.o: bashtypes.h -builtins/exit.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/exit.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/exit.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/exit.o: pathnames.h -builtins/fc.o: bashtypes.h ${BASHINCDIR}/posixstat.h -builtins/fc.o: bashansi.h ${BASHINCDIR}/ansi_stdlib.h builtins.h command.h ${BASHINCDIR}/stdc.h -builtins/fc.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/fc.o: flags.h unwind_prot.h variables.h arrayfunc.h conftypes.h shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h -builtins/fc.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h quit.h -builtins/fc.o: $(DEFSRC)/bashgetopt.h bashhist.h pathnames.h -builtins/fc.o: ${BASHINCDIR}/chartypes.h -builtins/fg_bg.o: bashtypes.h $(DEFSRC)/bashgetopt.h -builtins/fg_bg.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/fg_bg.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/fg_bg.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/fg_bg.o: pathnames.h -builtins/getopts.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/getopts.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/getopts.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/getopts.o: pathnames.h -builtins/hash.o: bashtypes.h -builtins/hash.o: builtins.h command.h findcmd.h ${BASHINCDIR}/stdc.h $(DEFSRC)/common.h -builtins/hash.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/hash.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/hash.o: pathnames.h -builtins/help.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/help.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/help.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/help.o: $(GLOB_LIBSRC)/glob.h pathnames.h -builtins/history.o: bashtypes.h pathnames.h -builtins/history.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/history.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/history.o: ${BASHINCDIR}/filecntl.h shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h -builtins/history.o: bashhist.h variables.h arrayfunc.h conftypes.h -builtins/inlib.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/inlib.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h quit.h -builtins/inlib.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/inlib.o: pathnames.h -builtins/jobs.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/jobs.o: quit.h $(DEFSRC)/bashgetopt.h -builtins/jobs.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/jobs.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/jobs.o: pathnames.h -builtins/kill.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/kill.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/kill.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h trap.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/kill.o: pathnames.h -builtins/let.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/let.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/let.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/let.o: pathnames.h -builtins/printf.o: config.h ${BASHINCDIR}/memalloc.h bashjmp.h command.h error.h -builtins/printf.o: general.h xmalloc.h quit.h dispose_cmd.h make_cmd.h subst.h -builtins/printf.o: externs.h sig.h pathnames.h shell.h syntax.h unwind_prot.h -builtins/printf.o: variables.h arrayfunc.h conftypes.h ${BASHINCDIR}/stdc.h $(DEFSRC)/bashgetopt.h -builtins/printf.o: ${BASHINCDIR}/chartypes.h -builtins/pushd.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/pushd.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/pushd.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/pushd.o: $(DEFSRC)/common.h pathnames.h -builtins/read.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/read.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/read.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/read.o: pathnames.h -builtins/return.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/return.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/return.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/return.o: pathnames.h -builtins/set.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/set.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/set.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h flags.h -builtins/set.o: pathnames.h -builtins/setattr.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/setattr.o: quit.h $(DEFSRC)/common.h $(DEFSRC)/bashgetopt.h -builtins/setattr.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/setattr.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/setattr.o: pathnames.h -builtins/shift.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/shift.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/shift.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/shift.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/shift.o: pathnames.h -builtins/shopt.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h -builtins/shopt.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h -builtins/shopt.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h unwind_prot.h variables.h arrayfunc.h conftypes.h ${BASHINCDIR}/maxpath.h -builtins/shopt.o: $(DEFSRC)/common.h $(DEFSRC)/bashgetopt.h pathnames.h -builtins/shopt.o: bashhist.h bashline.h -builtins/source.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/source.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/source.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/source.o: findcmd.h $(DEFSRC)/bashgetopt.h flags.h trap.h -builtins/source.o: pathnames.h -builtins/suspend.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/suspend.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/suspend.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/suspend.o: pathnames.h -builtins/test.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/test.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/test.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/test.o: test.h pathnames.h -builtins/times.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/times.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/times.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/times.o: pathnames.h -builtins/trap.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/trap.o: quit.h $(DEFSRC)/common.h -builtins/trap.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/trap.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/trap.o: pathnames.h -builtins/type.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/type.o: quit.h $(DEFSRC)/common.h findcmd.h -builtins/type.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/type.o: dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/type.o: pathnames.h -builtins/ulimit.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/ulimit.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/ulimit.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/ulimit.o: pathnames.h -builtins/umask.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/umask.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/umask.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/umask.o: ${BASHINCDIR}/chartypes.h pathnames.h -builtins/wait.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/wait.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/wait.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/wait.o: ${BASHINCDIR}/chartypes.h pathnames.h - -builtins/complete.o: config.h shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h -builtins/complete.o: unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/complete.o: bashtypes.h bashansi.h ${BASHINCDIR}/ansi_stdlib.h -builtins/complete.o: builtins.h pathnames.h -builtins/complete.o: pcomplete.h -builtins/complete.o: ${DEFSRC}/common.h ${DEFSRC}/bashgetopt.h -builtins/mapfile.o: command.h config.h ${BASHINCDIR}/memalloc.h error.h general.h xmalloc.h ${BASHINCDIR}/maxpath.h -builtins/mapfile.o: quit.h dispose_cmd.h make_cmd.h subst.h externs.h ${BASHINCDIR}/stdc.h -builtins/mapfile.o: shell.h syntax.h bashjmp.h ${BASHINCDIR}/posixjmp.h sig.h unwind_prot.h variables.h arrayfunc.h conftypes.h -builtins/mapfile.o: pathnames.h - -# libintl dependencies -builtins/bind.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/break.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/caller.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/cd.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/common.c: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/complete.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/declare.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/enable.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/evalfile.c: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/exec.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/exit.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/fc.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/fg_bg.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/getopt.c: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/hash.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/help.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/history.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/inlib.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/jobs.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/kill.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/let.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/mapfile.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/mkbuiltins.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/printf.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/pushd.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/read.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/return.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/set.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/setattr.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/shift.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/shopt.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/source.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/suspend.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/type.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/ulimit.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -builtins/umask.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h - -# builtin library dependencies -builtins/bind.o: $(RL_LIBSRC)/chardefs.h $(RL_LIBSRC)/readline.h -builtins/bind.o: $(RL_LIBSRC)/keymaps.h $(RL_LIBSRC)/rlstdc.h - -builtins/bind.o: $(HIST_LIBSRC)/history.h $(RL_LIBSRC)/rlstdc.h -builtins/fc.o: $(HIST_LIBSRC)/history.h $(RL_LIBSRC)/rlstdc.h -builtins/history.o: $(HIST_LIBSRC)/history.h $(RL_LIBSRC)/rlstdc.h - -builtins/common.o: $(TILDE_LIBSRC)/tilde.h -builtins/cd.o: $(TILDE_LIBSRC)/tilde.h - -builtins/alias.o: $(DEFSRC)/alias.def -builtins/bind.o: $(DEFSRC)/bind.def -builtins/break.o: $(DEFSRC)/break.def -builtins/builtin.o: $(DEFSRC)/builtin.def -builtins/caller.o: $(DEFSRC)/caller.def -builtins/cd.o: $(DEFSRC)/cd.def -builtins/colon.o: $(DEFSRC)/colon.def -builtins/command.o: $(DEFSRC)/command.def -builtins/complete.o: $(DEFSRC)/complete.def -builtins/declare.o: $(DEFSRC)/declare.def -builtins/echo.o: $(DEFSRC)/echo.def -builtins/enable.o: $(DEFSRC)/enable.def -builtins/eval.o: $(DEFSRC)/eval.def -builtins/exec.o: $(DEFSRC)/exec.def -builtins/exit.o: $(DEFSRC)/exit.def -builtins/fc.o: $(DEFSRC)/fc.def -builtins/fg_bg.o: $(DEFSRC)/fg_bg.def -builtins/getopts.o: $(DEFSRC)/getopts.def -builtins/hash.o: $(DEFSRC)/hash.def -builtins/help.o: $(DEFSRC)/help.def -builtins/history.o: $(DEFSRC)/history.def -builtins/inlib.o: $(DEFSRC)/inlib.def -builtins/jobs.o: $(DEFSRC)/jobs.def -builtins/kill.o: $(DEFSRC)/kill.def -builtins/let.o: $(DEFSRC)/let.def -builtins/mapfile.o: $(DEFSRC)/mapfile.def -builtins/pushd.o: $(DEFSRC)/pushd.def -builtins/read.o: $(DEFSRC)/read.def -builtins/reserved.o: $(DEFSRC)/reserved.def -builtins/return.o: $(DEFSRC)/return.def -builtins/set.o: $(DEFSRC)/set.def -builtins/setattr.o: $(DEFSRC)/setattr.def -builtins/shift.o: $(DEFSRC)/shift.def -builtins/shopt.o: $(DEFSRC)/shopt.def -builtins/source.o: $(DEFSRC)/source.def -builtins/suspend.o: $(DEFSRC)/suspend.def -builtins/test.o: $(DEFSRC)/test.def -builtins/times.o: $(DEFSRC)/times.def -builtins/trap.o: $(DEFSRC)/trap.def -builtins/type.o: $(DEFSRC)/type.def -builtins/ulimit.o: $(DEFSRC)/ulimit.def -builtins/umask.o: $(DEFSRC)/umask.def -builtins/wait.o: $(DEFSRC)/wait.def diff --git a/builtins/Makefile.in~ b/builtins/Makefile.in~ deleted file mode 100644 index 22b2a470c..000000000 --- a/builtins/Makefile.in~ +++ /dev/null @@ -1,683 +0,0 @@ -# This Makefile for building libbuiltins.a is in -*- text -*- for Emacs. -# -# Copyright (C) 1996-2009 Free Software Foundation, Inc. - -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. - -# You should have received a copy of the GNU General Public License -# along with this program. If not, see . - -PACKAGE = @PACKAGE_NAME@ -PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@ -PACKAGE_NAME = @PACKAGE_NAME@ -PACKAGE_STRING = @PACKAGE_STRING@ -PACKAGE_VERSION = @PACKAGE_VERSION@ - -# -SHELL = @MAKE_SHELL@ -RANLIB = @RANLIB@ -CC = @CC@ -CC_FOR_BUILD = @CC_FOR_BUILD@ -AR = @AR@ -ARFLAGS = @ARFLAGS@ -RM = rm -f -CP = cp - -EXEEXT = @EXEEXT@ - -prefix = @prefix@ - -srcdir = @srcdir@ -VPATH = .:@srcdir@ -topdir = @top_srcdir@ - -datarootdir = @datarootdir@ - -includedir = @includedir@ -datadir = @datadir@ -localedir = @localedir@ - -# Support an alternate destination root directory for package building -DESTDIR = - -INSTALL = @INSTALL@ -INSTALL_DATA = @INSTALL_DATA@ -BUILD_DIR = @BUILD_DIR@ - -LIBBUILD = ${BUILD_DIR}/lib - -PROFILE_FLAGS = @PROFILE_FLAGS@ -CFLAGS = @CFLAGS@ -CFLAGS_FOR_BUILD = @CFLAGS_FOR_BUILD@ @CROSS_COMPILE@ -CPPFLAGS = @CPPFLAGS@ -CPPFLAGS_FOR_BUILD = @CPPFLAGS_FOR_BUILD@ -LOCAL_CFLAGS = @LOCAL_CFLAGS@ ${DEBUG} -DEFS = @DEFS@ -LOCAL_DEFS = @LOCAL_DEFS@ - -LIBS = @LIBS@ -LDFLAGS = @LDFLAGS@ $(LOCAL_LDFLAGS) $(CFLAGS) -LDFLAGS_FOR_BUILD = @LDFLAGS_FOR_BUILD@ $(LOCAL_LDFLAGS) $(CFLAGS_FOR_BUILD) -LOCAL_LDFLAGS = @LOCAL_LDFLAGS@ -LIBS_FOR_BUILD = @LIBS_FOR_BUILD@ -#LIBS_FOR_BUILD = $(LIBS) - -BASHINCDIR = ${topdir}/include - -RL_INCLUDEDIR = @RL_INCLUDEDIR@ - -INTL_LIBSRC = ${topdir}/lib/intl -INTL_BUILDDIR = ${LIBBUILD}/intl -INTL_LIBDIR = ${INTL_BUILDDIR} -INTL_LIBRARY = ${INTL_BUILDDIR}/libintl.a -INTL_INC = @INTL_INC@ -INTL_DEP = @INTL_DEP@ -LIBINTL_H = @LIBINTL_H@ - -HELPDIR = @HELPDIR@ -MKDIRS = ${topdir}/support/mkdirs - -HELPFILES_TARGET = @HELPFILES_TARGET@ - -INCLUDES = -I. -I.. @RL_INCLUDE@ -I$(topdir) -I$(BASHINCDIR) -I$(topdir)/lib -I$(srcdir) ${INTL_INC} - -BASE_CCFLAGS = ${PROFILE_FLAGS} $(DEFS) $(LOCAL_DEFS) $(SYSTEM_FLAGS) \ - ${INCLUDES} $(LOCAL_CFLAGS) - -CCFLAGS = $(BASE_CCFLAGS) $(CPPFLAGS) $(CFLAGS) - -CCFLAGS_FOR_BUILD = $(BASE_CCFLAGS) $(CPPFLAGS_FOR_BUILD) $(CFLAGS_FOR_BUILD) - -GCC_LINT_FLAGS = -Wall -Wshadow -Wpointer-arith -Wcast-qual \ - -Wcast-align -Wstrict-prototypes -Wconversion \ - -Wmissing-prototypes -Wtraditional -Wredundant-decls -pedantic - -MKBUILTINS = mkbuiltins$(EXEEXT) -DIRECTDEFINE = -D $(srcdir) -HELPDIRDEFINE = @HELPDIRDEFINE@ -HELPSTRINGS = @HELPSTRINGS@ - -# xxx this is bad style -RL_LIBSRC = $(topdir)/lib/readline - -.SUFFIXES: -.SUFFIXES: .def .c .o -# How to make a .o file from a .def file. -.def.o: - $(RM) $@ - ./$(MKBUILTINS) $(DIRECTDEFINE) $< - $(CC) -c $(CCFLAGS) $*.c || ( $(RM) $*.c ; exit 1 ) - $(RM) $*.c - -# How to make a .c file from a .def file. -.def.c: - $(RM) $@ - ./$(MKBUILTINS) $(DIRECTDEFINE) $< - -# default rule for making a .o file from a .c file -.c.o: - $(RM) $@ - $(CC) -c $(CCFLAGS) $< - -DEFSRC = $(srcdir)/alias.def $(srcdir)/bind.def $(srcdir)/break.def \ - $(srcdir)/builtin.def $(srcdir)/caller.def \ - $(srcdir)/cd.def $(srcdir)/colon.def \ - $(srcdir)/command.def $(srcdir)/declare.def $(srcdir)/echo.def \ - $(srcdir)/enable.def $(srcdir)/eval.def $(srcdir)/getopts.def \ - $(srcdir)/exec.def $(srcdir)/exit.def $(srcdir)/fc.def \ - $(srcdir)/fg_bg.def $(srcdir)/hash.def $(srcdir)/help.def \ - $(srcdir)/history.def $(srcdir)/jobs.def $(srcdir)/kill.def \ - $(srcdir)/let.def $(srcdir)/read.def $(srcdir)/return.def \ - $(srcdir)/set.def $(srcdir)/setattr.def $(srcdir)/shift.def \ - $(srcdir)/source.def $(srcdir)/suspend.def $(srcdir)/test.def \ - $(srcdir)/times.def $(srcdir)/trap.def $(srcdir)/type.def \ - $(srcdir)/ulimit.def $(srcdir)/umask.def $(srcdir)/wait.def \ - $(srcdir)/reserved.def $(srcdir)/pushd.def $(srcdir)/shopt.def \ - $(srcdir)/printf.def $(srcdir)/complete.def $(srcdir)/mapfile.def - -STATIC_SOURCE = common.c evalstring.c evalfile.c getopt.c bashgetopt.c \ - getopt.h - -OFILES = builtins.o \ - alias.o bind.o break.o builtin.o caller.o cd.o colon.o command.o \ - common.o declare.o echo.o enable.o eval.o evalfile.o \ - evalstring.o exec.o exit.o fc.o fg_bg.o hash.o help.o history.o \ - jobs.o kill.o let.o mapfile.o \ - pushd.o read.o return.o set.o setattr.o shift.o source.o \ - suspend.o test.o times.o trap.o type.o ulimit.o umask.o \ - wait.o getopts.o shopt.o printf.o getopt.o bashgetopt.o complete.o - -CREATED_FILES = builtext.h builtins.c psize.aux pipesize.h tmpbuiltins.c \ - tmpbuiltins.h -CREATED_OBJECTS = tmpbuiltins.o gen-helpfiles.o mkbuiltins.o - -all: $(MKBUILTINS) libbuiltins.a $(HELPFILES_TARGET) - -libbuiltins.a: $(MKBUILTINS) $(OFILES) builtins.o - $(RM) $@ - $(AR) $(ARFLAGS) $@ $(OFILES) - -$(RANLIB) $@ - -tmpbuiltins.c: $(MKBUILTINS) $(DEFSRC) - ./$(MKBUILTINS) -externfile tmpbuiltins.h -structfile $@ \ - -noproduction -nofunctions \ - $(DIRECTDEFINE) $(HELPSTRINGS) $(DEFSRC) - -tmpbuiltins.h: tmpbuiltins.c - -gen-helpfiles.o: ../config.h -gen-helpfiles.o: gen-helpfiles.c - $(RM) $@ - $(CC_FOR_BUILD) -c $(CCFLAGS_FOR_BUILD) $< - -gen-helpfiles: tmpbuiltins.o gen-helpfiles.o - $(CC_FOR_BUILD) $(LDFLAGS_FOR_BUILD) -o $@ gen-helpfiles.o tmpbuiltins.o $(LIBS_FOR_BUILD) - -builtext.h builtins.c: $(MKBUILTINS) $(DEFSRC) - @-if test -f builtins.c; then mv -f builtins.c old-builtins.c; fi - @-if test -f builtext.h; then mv -f builtext.h old-builtext.h; fi - ./$(MKBUILTINS) -externfile builtext.h -structfile builtins.c \ - -noproduction $(DIRECTDEFINE) $(HELPDIRDEFINE) $(HELPSTRINGS) $(DEFSRC) - @-if cmp -s old-builtext.h builtext.h 2>/dev/null; then \ - mv old-builtext.h builtext.h; \ - else \ - $(RM) old-builtext.h; \ - fi - @-if cmp -s old-builtins.c builtins.c 2>/dev/null; then \ - mv old-builtins.c builtins.c; \ - else \ - $(RM) old-builtins.c; \ - fi - -helpdoc: gen-helpfiles - ./gen-helpfiles ${HELPDIRDEFINE} - -install-help: - @-if test -n "${HELPDIR}" && test -d helpfiles ; then \ - test -d $(DESTDIR)${HELPDIR} || ${SHELL} ${MKDIRS} $(DESTDIR)$(HELPDIR) ;\ - ( for f in helpfiles/*; do \ - echo installing $$f; \ - ${INSTALL_DATA} $$f $(DESTDIR)$(HELPDIR); \ - done; ) ; \ - fi - -install: @HELPINSTALL@ - -mkbuiltins.o: ../config.h -mkbuiltins.o: mkbuiltins.c - $(RM) $@ - $(CC_FOR_BUILD) -c $(CCFLAGS_FOR_BUILD) $< - -mkbuiltins$(EXEEXT): mkbuiltins.o - $(CC_FOR_BUILD) $(LDFLAGS_FOR_BUILD) -o $(MKBUILTINS) mkbuiltins.o $(LIBS_FOR_BUILD) - -# rules for deficient makes, like SunOS -mkbuiltins.o: mkbuiltins.c -builtins.o: builtins.c -common.o: common.c -bashgetopt.o: bashgetopt.c -getopt.o: getopt.c -evalstring.o: evalstring.c -evalfile.o: evalfile.c - -tmpbuiltins.o: tmpbuiltins.c -gen-helpfiles.o: gen-helpfiles.c - -ulimit.o: pipesize.h - -pipesize.h: psize.aux - $(SHELL) $(srcdir)/psize.sh > $@ - -psize.aux: psize.c - $(CC_FOR_BUILD) $(CCFLAGS_FOR_BUILD) -o $@ $(srcdir)/psize.c - -documentation: builtins.texi - -builtins.texi: $(MKBUILTINS) - ./$(MKBUILTINS) -documentonly $(DEFSRC) - -clean: - $(RM) $(OFILES) $(CREATED_FILES) libbuiltins.a - $(RM) $(MKBUILTINS) gen-helpfiles $(CREATED_OBJECTS) - -test -d helpfiles && $(RM) -r helpfiles - -mostlyclean: - $(RM) $(OFILES) libbuiltins.a - -distclean maintainer-clean: clean - $(RM) Makefile - -$(OFILES): $(MKBUILTINS) ../config.h - -../version.h: ../config.h ../Makefile Makefile - -( cd ${BUILD_DIR} && ${MAKE} ${MFLAGS} version.h ) - -# maintainer special - for now -po: builtins.c - xgettext -L C -o $(topdir)/po/builtins.pot --keyword='N_' builtins.c 2>/dev/null - -${LIBINTL_H}: - @echo making $@ in ${INTL_BUILDDIR} - @(cd ${INTL_BUILDDIR} && \ - $(MAKE) $(MFLAGS) libintl.h) || exit 1 - -# dependencies - -alias.o: alias.def -bind.o: bind.def -break.o: break.def -builtin.o: builtin.def -caller.o: caller.def -cd.o: cd.def -colon.o: colon.def -command.o: command.def -declare.o: declare.def -echo.o: echo.def -enable.o: enable.def -eval.o: eval.def -exec.o: exec.def -exit.o: exit.def -fc.o: fc.def -fg_bg.o: fg_bg.def -hash.o: hash.def -help.o: help.def -history.o: history.def -jobs.o: jobs.def -kill.o: kill.def -let.o: let.def -mapfile.o: mapfile.def -printf.o: printf.def -pushd.o: pushd.def -read.o: read.def -return.o: return.def -set.o: set.def -setattr.o: setattr.def -shift.o: shift.def -shopt.o: shopt.def -source.o: source.def -suspend.o: suspend.def -test.o: test.def -times.o: times.def -trap.o: trap.def -type.o: type.def -ulimit.o: ulimit.def -umask.o: umask.def -wait.o: wait.def -getopts.o: getopts.def -reserved.o: reserved.def -complete.o: complete.def - -# C files -bashgetopt.o: ../config.h $(topdir)/bashansi.h $(BASHINCDIR)/ansi_stdlib.h -bashgetopt.o: $(topdir)/shell.h $(topdir)/syntax.h $(topdir)/bashjmp.h -bashgetopt.o: $(topdir)/command.h $(topdir)/general.h $(topdir)/xmalloc.h $(topdir)/error.h -bashgetopt.o: $(topdir)/variables.h $(topdir)/conftypes.h $(topdir)/quit.h $(BASHINCDIR)/maxpath.h -bashgetopt.o: $(topdir)/unwind_prot.h $(topdir)/dispose_cmd.h -bashgetopt.o: $(topdir)/make_cmd.h $(topdir)/subst.h $(topdir)/sig.h -bashgetopt.o: ../pathnames.h $(topdir)/externs.h $(srcdir)/common.h -bashgetopt.o: $(BASHINCDIR)/chartypes.h -common.o: $(topdir)/bashtypes.h $(BASHINCDIR)/posixstat.h $(topdir)/bashansi.h $(BASHINCDIR)/ansi_stdlib.h -common.o: $(topdir)/shell.h $(topdir)/syntax.h ../config.h $(topdir)/bashjmp.h $(BASHINCDIR)/posixjmp.h -common.o: $(topdir)/sig.h $(topdir)/command.h -common.o: $(topdir)/general.h $(topdir)/xmalloc.h $(BASHINCDIR)/stdc.h $(BASHINCDIR)/memalloc.h -common.o: $(topdir)/variables.h $(topdir)/conftypes.h $(topdir)/input.h -common.o: $(topdir)/siglist.h $(topdir)/bashhist.h $(topdir)/quit.h -common.o: $(topdir)/unwind_prot.h $(BASHINCDIR)/maxpath.h $(topdir)/jobs.h -common.o: $(topdir)/builtins.h $(topdir)/dispose_cmd.h $(topdir)/make_cmd.h -common.o: $(topdir)/subst.h $(topdir)/execute_cmd.h $(topdir)/error.h -common.o: $(topdir)/externs.h ../pathnames.h ./builtext.h -common.o: $(BASHINCDIR)/chartypes.h -evalfile.o: $(topdir)/bashtypes.h $(BASHINCDIR)/posixstat.h ${BASHINCDIR}/filecntl.h -evalfile.o: $(topdir)/bashansi.h $(BASHINCDIR)/ansi_stdlib.h -evalfile.o: $(topdir)/shell.h $(topdir)/syntax.h ../config.h $(topdir)/bashjmp.h -evalfile.o: $(topdir)/command.h $(topdir)/general.h $(topdir)/xmalloc.h $(topdir)/error.h -evalfile.o: $(topdir)/variables.h $(topdir)/conftypes.h $(topdir)/quit.h $(BASHINCDIR)/maxpath.h -evalfile.o: $(topdir)/unwind_prot.h $(topdir)/dispose_cmd.h -evalfile.o: $(topdir)/make_cmd.h $(topdir)/subst.h $(topdir)/sig.h -evalfile.o: ../pathnames.h $(topdir)/externs.h -evalfile.o: $(topdir)/jobs.h $(topdir)/builtins.h $(topdir)/flags.h -evalfile.o: $(topdir)/input.h $(topdir)/execute_cmd.h -evalfile.o: $(topdir)/bashhist.h $(srcdir)/common.h -evalstring.o: ../config.h $(topdir)/bashansi.h $(BASHINCDIR)/ansi_stdlib.h -evalstring.o: $(topdir)/shell.h $(topdir)/syntax.h $(topdir)/bashjmp.h $(BASHINCDIR)/posixjmp.h -evalstring.o: $(topdir)/sig.h $(topdir)/command.h $(topdir)/siglist.h -evalstring.o: $(BASHINCDIR)/memalloc.h $(topdir)/variables.h $(topdir)/conftypes.h $(topdir)/input.h -evalstring.o: $(topdir)/quit.h $(topdir)/unwind_prot.h -evalstring.o: $(BASHINCDIR)/maxpath.h $(topdir)/jobs.h $(topdir)/builtins.h -evalstring.o: $(topdir)/dispose_cmd.h $(topdir)/make_cmd.h $(topdir)/subst.h -evalstring.o: $(topdir)/externs.h $(topdir)/jobs.h $(topdir)/builtins.h -evalstring.o: $(topdir)/flags.h $(topdir)/input.h $(topdir)/execute_cmd.h -evalstring.o: $(topdir)/bashhist.h $(srcdir)/common.h -evalstring.o: $(topdir)/trap.h $(topdir)/redir.h ../pathnames.h -#evalstring.o: $(topdir)/y.tab.h -getopt.o: ../config.h $(BASHINCDIR)/memalloc.h -getopt.o: $(topdir)/shell.h $(topdir)/syntax.h $(topdir)/bashjmp.h $(topdir)/command.h -getopt.o: $(topdir)/general.h $(topdir)/xmalloc.h $(topdir)/error.h $(topdir)/variables.h $(topdir)/conftypes.h -getopt.o: $(topdir)/quit.h $(BASHINCDIR)/maxpath.h $(topdir)/unwind_prot.h -getopt.o: $(topdir)/dispose_cmd.h $(topdir)/make_cmd.h $(topdir)/subst.h -getopt.o: $(topdir)/sig.h ../pathnames.h $(topdir)/externs.h -getopt.o: $(srcdir)/getopt.h -mkbuiltins.o: ../config.h $(topdir)/bashtypes.h $(BASHINCDIR)/posixstat.h -mkbuiltins.o: ${BASHINCDIR}/filecntl.h -mkbuiltins.o: $(topdir)/bashansi.h $(BASHINCDIR)/ansi_stdlib.h - -# def files -alias.o: $(topdir)/command.h ../config.h $(BASHINCDIR)/memalloc.h -alias.o: $(topdir)/error.h $(topdir)/general.h $(topdir)/xmalloc.h $(BASHINCDIR)/maxpath.h -alias.o: $(topdir)/quit.h $(topdir)/dispose_cmd.h $(topdir)/make_cmd.h -alias.o: $(topdir)/subst.h $(topdir)/externs.h $(srcdir)/common.h -alias.o: $(topdir)/shell.h $(topdir)/syntax.h $(topdir)/unwind_prot.h $(topdir)/variables.h $(topdir)/conftypes.h -alias.o: ../pathnames.h -bind.o: $(topdir)/command.h ../config.h $(BASHINCDIR)/memalloc.h $(topdir)/error.h -bind.o: $(topdir)/quit.h $(topdir)/dispose_cmd.h $(topdir)/make_cmd.h -bind.o: $(topdir)/subst.h $(topdir)/externs.h $(srcdir)/bashgetopt.h -bind.o: $(topdir)/general.h $(topdir)/xmalloc.h $(BASHINCDIR)/maxpath.h $(topdir)/bashline.h -bind.o: $(topdir)/shell.h $(topdir)/syntax.h $(topdir)/unwind_prot.h $(topdir)/variables.h $(topdir)/conftypes.h -bind.o: ../pathnames.h -break.o: $(topdir)/command.h ../config.h $(BASHINCDIR)/memalloc.h -break.o: $(topdir)/error.h $(topdir)/general.h $(topdir)/xmalloc.h -break.o: $(topdir)/quit.h $(topdir)/dispose_cmd.h $(topdir)/make_cmd.h -break.o: $(topdir)/subst.h $(topdir)/externs.h $(BASHINCDIR)/maxpath.h -break.o: $(topdir)/shell.h $(topdir)/syntax.h $(topdir)/unwind_prot.h $(topdir)/variables.h $(topdir)/conftypes.h -break.o: ../pathnames.h -builtin.o: $(topdir)/command.h ../config.h $(BASHINCDIR)/memalloc.h -builtin.o: $(topdir)/error.h $(topdir)/general.h $(topdir)/xmalloc.h $(topdir)/externs.h -builtin.o: $(topdir)/quit.h $(srcdir)/common.h $(BASHINCDIR)/maxpath.h -builtin.o: $(topdir)/dispose_cmd.h $(topdir)/make_cmd.h $(topdir)/subst.h -builtin.o: $(topdir)/shell.h $(topdir)/syntax.h $(topdir)/unwind_prot.h $(topdir)/variables.h $(topdir)/conftypes.h -builtin.o: $(srcdir)/bashgetopt.h ../pathnames.h -caller.o: $(topdir)/command.h ../config.h $(BASHINCDIR)/memalloc.h $(topdir)/error.h -caller.o: $(topdir)/general.h $(topdir)/xmalloc.h $(topdir)/quit.h $(topdir)/dispose_cmd.h -caller.o: $(topdir)/make_cmd.h $(topdir)/subst.h $(topdir)/externs.h -caller.o: $(topdir)/shell.h $(topdir)/syntax.h $(topdir)/unwind_prot.h $(topdir)/variables.h $(topdir)/conftypes.h -caller.o: $(srcdir)/common.h $(BASHINCDIR)/maxpath.h ./builtext.h -caller.o: ${BASHINCDIR}/chartypes.h $(topdir)/bashtypes.h ../pathnames.h -cd.o: $(topdir)/command.h ../config.h $(BASHINCDIR)/memalloc.h $(topdir)/error.h -cd.o: $(topdir)/general.h $(topdir)/xmalloc.h $(topdir)/quit.h $(topdir)/dispose_cmd.h -cd.o: $(topdir)/make_cmd.h $(topdir)/subst.h $(topdir)/externs.h -cd.o: $(topdir)/shell.h $(topdir)/syntax.h $(topdir)/unwind_prot.h $(topdir)/variables.h $(topdir)/conftypes.h -cd.o: $(srcdir)/common.h $(BASHINCDIR)/maxpath.h ../pathnames.h -command.o: $(topdir)/command.h ../config.h $(BASHINCDIR)/memalloc.h -command.o: $(topdir)/error.h $(topdir)/general.h $(topdir)/xmalloc.h $(topdir)/externs.h -command.o: 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${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -ulimit.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h -umask.o: ${topdir}/bashintl.h ${LIBINTL_H} $(BASHINCDIR)/gettext.h diff --git a/builtins/evalstring.c~ b/builtins/evalstring.c~ deleted file mode 100644 index 86e9aaa25..000000000 --- a/builtins/evalstring.c~ +++ /dev/null @@ -1,508 +0,0 @@ -/* evalstring.c - evaluate a string as one or more shell commands. */ - -/* Copyright (C) 1996-2010 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#include - -#if defined (HAVE_UNISTD_H) -# ifdef _MINIX -# include -# endif -# include -#endif - -#include -#include - -#include - -#include "filecntl.h" -#include "../bashansi.h" - -#include "../shell.h" -#include "../jobs.h" -#include "../builtins.h" -#include "../flags.h" -#include "../input.h" -#include "../execute_cmd.h" -#include "../redir.h" -#include "../trap.h" -#include "../bashintl.h" - -#include - -#if defined (HISTORY) -# include "../bashhist.h" -#endif - -#include "common.h" -#include "builtext.h" - -#if !defined (errno) -extern int errno; -#endif - -#define IS_BUILTIN(s) (builtin_address_internal(s, 0) != (struct builtin *)NULL) - -extern int indirection_level, subshell_environment; -extern int line_number; -extern int current_token, shell_eof_token; -extern int last_command_exit_value; -extern int running_trap; -extern int loop_level; -extern int executing_list; -extern int comsub_ignore_return; -extern int posixly_correct; -extern sh_builtin_func_t *this_shell_builtin; - -int parse_and_execute_level = 0; - -static int cat_file __P((REDIRECT *)); - -#define PE_TAG "parse_and_execute top" -#define PS_TAG "parse_string top" - -#if defined (HISTORY) -static void -set_history_remembering () -{ - remember_on_history = enable_history_list; -} -#endif - -/* How to force parse_and_execute () to clean up after itself. */ -void -parse_and_execute_cleanup () -{ - if (running_trap) - { - run_trap_cleanup (running_trap - 1); - unfreeze_jobs_list (); - } - - if (have_unwind_protects ()) - run_unwind_frame (PE_TAG); - else - parse_and_execute_level = 0; /* XXX */ -} - -static void -parse_prologue (string, flags, tag) - char *string; - int flags; - char *tag; -{ - char *orig_string; - int x; - - orig_string = string; - /* Unwind protect this invocation of parse_and_execute (). */ - begin_unwind_frame (tag); - unwind_protect_int (parse_and_execute_level); - unwind_protect_jmp_buf (top_level); - unwind_protect_int (indirection_level); - unwind_protect_int (line_number); - unwind_protect_int (loop_level); - unwind_protect_int (executing_list); - unwind_protect_int (comsub_ignore_return); - if (flags & (SEVAL_NONINT|SEVAL_INTERACT)) - unwind_protect_int (interactive); - -#if defined (HISTORY) - if (parse_and_execute_level == 0) - add_unwind_protect (set_history_remembering, (char *)NULL); - else - unwind_protect_int (remember_on_history); /* can be used in scripts */ -# if defined (BANG_HISTORY) - if (interactive_shell) - unwind_protect_int (history_expansion_inhibited); -# endif /* BANG_HISTORY */ -#endif /* HISTORY */ - - if (interactive_shell) - { - x = get_current_prompt_level (); - add_unwind_protect (set_current_prompt_level, x); - } - - add_unwind_protect (pop_stream, (char *)NULL); - if (orig_string && ((flags & SEVAL_NOFREE) == 0)) - add_unwind_protect (xfree, orig_string); - end_unwind_frame (); - - if (flags & (SEVAL_NONINT|SEVAL_INTERACT)) - interactive = (flags & SEVAL_NONINT) ? 0 : 1; - -#if defined (HISTORY) - if (flags & SEVAL_NOHIST) - bash_history_disable (); -#endif /* HISTORY */ -} - -/* Parse and execute the commands in STRING. Returns whatever - execute_command () returns. This frees STRING. FLAGS is a - flags word; look in common.h for the possible values. Actions - are: - (flags & SEVAL_NONINT) -> interactive = 0; - (flags & SEVAL_INTERACT) -> interactive = 1; - (flags & SEVAL_NOHIST) -> call bash_history_disable () - (flags & SEVAL_NOFREE) -> don't free STRING when finished - (flags & SEVAL_RESETLINE) -> reset line_number to 1 -*/ - -int -parse_and_execute (string, from_file, flags) - char *string; - const char *from_file; - int flags; -{ - int code, lreset; - volatile int should_jump_to_top_level, last_result; - COMMAND *volatile command; - - parse_prologue (string, flags, PE_TAG); - - parse_and_execute_level++; - - lreset = flags & SEVAL_RESETLINE; - - /* Reset the line number if the caller wants us to. If we don't reset the - line number, we have to subtract one, because we will add one just - before executing the next command (resetting the line number sets it to - 0; the first line number is 1). */ - push_stream (lreset); - if (lreset == 0) - line_number--; - - indirection_level++; - - code = should_jump_to_top_level = 0; - last_result = EXECUTION_SUCCESS; - - with_input_from_string (string, from_file); - while (*(bash_input.location.string)) - { - command = (COMMAND *)NULL; - - if (interrupt_state) - { - last_result = EXECUTION_FAILURE; - break; - } - - /* Provide a location for functions which `longjmp (top_level)' to - jump to. This prevents errors in substitution from restarting - the reader loop directly, for example. */ - code = setjmp (top_level); - - if (code) - { - should_jump_to_top_level = 0; - switch (code) - { - case FORCE_EOF: - case ERREXIT: - case EXITPROG: - if (command) - run_unwind_frame ("pe_dispose"); - /* Remember to call longjmp (top_level) after the old - value for it is restored. */ - should_jump_to_top_level = 1; - goto out; - - case DISCARD: - if (command) - run_unwind_frame ("pe_dispose"); - last_result = last_command_exit_value = EXECUTION_FAILURE; /* XXX */ - if (subshell_environment) - { - should_jump_to_top_level = 1; - goto out; - } - else - { -#if 0 - dispose_command (command); /* pe_dispose does this */ -#endif - continue; - } - - default: - command_error ("parse_and_execute", CMDERR_BADJUMP, code, 0); - break; - } - } - - if (parse_command () == 0) - { - if ((flags & SEVAL_PARSEONLY) || (interactive_shell == 0 && read_but_dont_execute)) - { - last_result = EXECUTION_SUCCESS; - dispose_command (global_command); - global_command = (COMMAND *)NULL; - } - else if (command = global_command) - { - struct fd_bitmap *bitmap; - - bitmap = new_fd_bitmap (FD_BITMAP_SIZE); - begin_unwind_frame ("pe_dispose"); - add_unwind_protect (dispose_fd_bitmap, bitmap); - add_unwind_protect (dispose_command, command); /* XXX */ - - global_command = (COMMAND *)NULL; - - if ((subshell_environment & SUBSHELL_COMSUB) && comsub_ignore_return) - command->flags |= CMD_IGNORE_RETURN; - -#if defined (ONESHOT) - /* - * IF - * we were invoked as `bash -c' (startup_state == 2) AND - * parse_and_execute has not been called recursively AND - * we're not running a trap AND - * we have parsed the full command (string == '\0') AND - * we're not going to run the exit trap AND - * we have a simple command without redirections AND - * the command is not being timed AND - * the command's return status is not being inverted - * THEN - * tell the execution code that we don't need to fork - */ - if (startup_state == 2 && parse_and_execute_level == 1 && - running_trap == 0 && - *bash_input.location.string == '\0' && - command->type == cm_simple && - signal_is_trapped (EXIT_TRAP) == 0 && - command->redirects == 0 && command->value.Simple->redirects == 0 && - ((command->flags & CMD_TIME_PIPELINE) == 0) && - ((command->flags & CMD_INVERT_RETURN) == 0)) - { - command->flags |= CMD_NO_FORK; - command->value.Simple->flags |= CMD_NO_FORK; - } -#endif /* ONESHOT */ - - /* See if this is a candidate for $( type == cm_simple && !command->redirects && - (command->flags & CMD_TIME_PIPELINE) == 0 && - command->value.Simple->words == 0 && - command->value.Simple->redirects && - command->value.Simple->redirects->next == 0 && - command->value.Simple->redirects->instruction == r_input_direction && - command->value.Simple->redirects->redirector.dest == 1) - { - int r; - r = cat_file (command->value.Simple->redirects); - last_result = (r < 0) ? EXECUTION_FAILURE : EXECUTION_SUCCESS; - } - else - last_result = execute_command_internal - (command, 0, NO_PIPE, NO_PIPE, bitmap); - dispose_command (command); - dispose_fd_bitmap (bitmap); - discard_unwind_frame ("pe_dispose"); - } - } - else - { - last_result = EXECUTION_FAILURE; - - if (interactive_shell == 0 && this_shell_builtin && - (this_shell_builtin == source_builtin || this_shell_builtin == eval_builtin) && - last_command_exit_value == EX_BADSYNTAX && posixly_correct) - { - should_jump_to_top_level = 1; - code = ERREXIT; - last_command_exit_value = EX_BADUSAGE; - } - - /* Since we are shell compatible, syntax errors in a script - abort the execution of the script. Right? */ - break; - } - } - - out: - - run_unwind_frame (PE_TAG); - - if (interrupt_state && parse_and_execute_level == 0) - { - /* An interrupt during non-interactive execution in an - interactive shell (e.g. via $PROMPT_COMMAND) should - not cause the shell to exit. */ - interactive = interactive_shell; - throw_to_top_level (); - } - - if (should_jump_to_top_level) - jump_to_top_level (code); - - return (last_result); -} - -/* Parse a command contained in STRING according to FLAGS and return the - number of characters consumed from the string. If non-NULL, set *ENDP - to the position in the string where the parse ended. Used to validate - command substitutions during parsing to obey Posix rules about finding - the end of the command and balancing parens. */ -int -parse_string (string, from_file, flags, endp) - char *string; - const char *from_file; - int flags; - char **endp; -{ - int code, nc; - volatile int should_jump_to_top_level; - COMMAND *volatile command, *oglobal; - char *ostring; - - parse_prologue (string, flags, PS_TAG); - - /* Reset the line number if the caller wants us to. If we don't reset the - line number, we have to subtract one, because we will add one just - before executing the next command (resetting the line number sets it to - 0; the first line number is 1). */ - push_stream (0); - - code = should_jump_to_top_level = 0; - oglobal = global_command; - ostring = string; - - with_input_from_string (string, from_file); - while (*(bash_input.location.string)) - { - command = (COMMAND *)NULL; - -#if 0 - if (interrupt_state) - break; -#endif - - /* Provide a location for functions which `longjmp (top_level)' to - jump to. */ - code = setjmp (top_level); - - if (code) - { -#if defined (DEBUG) -itrace("parse_string: longjmp executed: code = %d", code); -#endif - should_jump_to_top_level = 0; - switch (code) - { - case FORCE_EOF: - case ERREXIT: - case EXITPROG: - case DISCARD: /* XXX */ - if (command) - dispose_command (command); - /* Remember to call longjmp (top_level) after the old - value for it is restored. */ - should_jump_to_top_level = 1; - goto out; - - default: - command_error ("parse_string", CMDERR_BADJUMP, code, 0); - break; - } - } - - if (parse_command () == 0) - { - dispose_command (global_command); - global_command = (COMMAND *)NULL; - } - else - { - if ((flags & SEVAL_NOLONGJMP) == 0) - { - should_jump_to_top_level = 1; - code = DISCARD; - } - else - reset_parser (); /* XXX - sets token_to_read */ - break; - } - - if (current_token == yacc_EOF || current_token == shell_eof_token) - break; - } - - out: - - global_command = oglobal; - nc = bash_input.location.string - ostring; - if (endp) - *endp = bash_input.location.string; - - run_unwind_frame (PS_TAG); - - if (should_jump_to_top_level) - jump_to_top_level (code); - - return (nc); -} - -/* Handle a $( < file ) command substitution. This expands the filename, - returning errors as appropriate, then just cats the file to the standard - output. */ -static int -cat_file (r) - REDIRECT *r; -{ - char *fn; - int fd, rval; - - if (r->instruction != r_input_direction) - return -1; - - /* Get the filename. */ - if (posixly_correct && !interactive_shell) - disallow_filename_globbing++; - fn = redirection_expand (r->redirectee.filename); - if (posixly_correct && !interactive_shell) - disallow_filename_globbing--; - - if (fn == 0) - { - redirection_error (r, AMBIGUOUS_REDIRECT); - return -1; - } - - fd = open(fn, O_RDONLY); - if (fd < 0) - { - file_error (fn); - free (fn); - return -1; - } - - rval = zcatfd (fd, 1, fn); - - free (fn); - close (fd); - - return (rval); -} diff --git a/builtins/gen-helpfiles.c~ b/builtins/gen-helpfiles.c~ deleted file mode 100644 index 419996519..000000000 --- a/builtins/gen-helpfiles.c~ +++ /dev/null @@ -1,185 +0,0 @@ -/* gen-helpfiles - create files containing builtin help text */ - -/* Copyright (C) 2012 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#if !defined (CROSS_COMPILING) -# include -#else /* CROSS_COMPILING */ -/* A conservative set of defines based on POSIX/SUS3/XPG6 */ -# define HAVE_UNISTD_H -# define HAVE_STRING_H -# define HAVE_STDLIB_H - -# define HAVE_RENAME -#endif /* CROSS_COMPILING */ - -#if defined (HAVE_UNISTD_H) -# ifdef _MINIX -# include -# endif -# include -#endif - -#ifndef _MINIX -# include "../bashtypes.h" -# if defined (HAVE_SYS_FILE_H) -# include -# endif -#endif - -#include "posixstat.h" -#include "filecntl.h" - -#include "../bashansi.h" -#include -#include - -#include "stdc.h" - -#include "../builtins.h" -#include "tmpbuiltins.h" - -#ifndef errno -extern int errno; -#endif - -#if !defined (__STDC__) && !defined (strcpy) -extern char *strcpy (); -#endif /* !__STDC__ && !strcpy */ - -#define whitespace(c) (((c) == ' ') || ((c) == '\t')) - -/* Flag values that builtins can have. */ -#define BUILTIN_FLAG_SPECIAL 0x01 -#define BUILTIN_FLAG_ASSIGNMENT 0x02 -#define BUILTIN_FLAG_POSIX_BUILTIN 0x04 - -#define BASE_INDENT 4 - -/* Non-zero means to produce separate help files for each builtin, named by - the builtin name, in `./helpfiles'. */ -int separate_helpfiles = 0; - -/* Non-zero means to create single C strings for each `longdoc', with - embedded newlines, for ease of translation. */ -int single_longdoc_strings = 1; - -/* The name of a directory into which the separate external help files will - eventually be installed. */ -char *helpfile_directory; - -/* Forward declarations. */ - -int write_helpfiles (); - -/* For each file mentioned on the command line, process it and - write the information to STRUCTFILE and EXTERNFILE, while - creating the production file if neccessary. */ -int -main (argc, argv) - int argc; - char **argv; -{ - int arg_index = 1; - - while (arg_index < argc && argv[arg_index][0] == '-') - { - char *arg = argv[arg_index++]; - - if (strcmp (arg, "-noproduction") == 0) - ; - else if (strcmp (arg, "-H") == 0) - helpfile_directory = argv[arg_index++]; - else if (strcmp (arg, "-S") == 0) - single_longdoc_strings = 0; - else - { - fprintf (stderr, "%s: Unknown flag %s.\n", argv[0], arg); - exit (2); - } - } - - write_helpfiles(shell_builtins); - - exit (0); -} - -/* Write DOCUMENTATION to STREAM, perhaps surrounding it with double-quotes - and quoting special characters in the string. Handle special things for - internationalization (gettext) and the single-string vs. multiple-strings - issues. */ -void -write_documentation (stream, documentation, indentation) - FILE *stream; - char *documentation; - int indentation; -{ - if (stream == 0) - return; - - if (documentation) - fprintf (stream, "%*s%s\n", indentation, " ", documentation); -} - -int -write_helpfiles (builtins) - struct builtin *builtins; -{ - char *helpfile, *bname, *fname; - FILE *helpfp; - int i, hdlen; - struct builtin b; - - i = mkdir ("helpfiles", 0777); - if (i < 0 && errno != EEXIST) - { - fprintf (stderr, "write_helpfiles: helpfiles: cannot create directory\n"); - return -1; - } - - hdlen = strlen ("helpfiles/"); - for (i = 0; i < num_shell_builtins; i++) - { - b = builtins[i]; - - fname = (char *)b.handle; - helpfile = (char *)malloc (hdlen + strlen (fname) + 1); - if (helpfile == 0) - { - fprintf (stderr, "gen-helpfiles: cannot allocate memory\n"); - exit (1); - } - sprintf (helpfile, "helpfiles/%s", fname); - - helpfp = fopen (helpfile, "w"); - if (helpfp == 0) - { - fprintf (stderr, "write_helpfiles: cannot open %s\n", helpfile); - free (helpfile); - continue; - } - - write_documentation (helpfp, b.long_doc[0], 4); - - fflush (helpfp); - fclose (helpfp); - free (helpfile); - } - return 0; -} diff --git a/builtins/mkbuiltins.c~ b/builtins/mkbuiltins.c~ deleted file mode 100644 index 9a09945f4..000000000 --- a/builtins/mkbuiltins.c~ +++ /dev/null @@ -1,1625 +0,0 @@ -/* mkbuiltins.c - Create builtins.c, builtext.h, and builtdoc.c from - a single source file called builtins.def. */ - -/* Copyright (C) 1987-2011 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#if !defined (CROSS_COMPILING) -# include -#else /* CROSS_COMPILING */ -/* A conservative set of defines based on POSIX/SUS3/XPG6 */ -# define HAVE_UNISTD_H -# define HAVE_STRING_H -# define HAVE_STDLIB_H - -# define HAVE_RENAME -#endif /* CROSS_COMPILING */ - -#if defined (HAVE_UNISTD_H) -# ifdef _MINIX -# include -# endif -# include -#endif - -#ifndef _MINIX -# include "../bashtypes.h" -# if defined (HAVE_SYS_FILE_H) -# include -# endif -#endif - -#include "posixstat.h" -#include "filecntl.h" - -#include "../bashansi.h" -#include -#include - -#include "stdc.h" - -#define DOCFILE "builtins.texi" - -#ifndef errno -extern int errno; -#endif - -static char *xmalloc (), *xrealloc (); - -#if !defined (__STDC__) && !defined (strcpy) -extern char *strcpy (); -#endif /* !__STDC__ && !strcpy */ - -#define savestring(x) strcpy (xmalloc (1 + strlen (x)), (x)) -#define whitespace(c) (((c) == ' ') || ((c) == '\t')) - -/* Flag values that builtins can have. */ -#define BUILTIN_FLAG_SPECIAL 0x01 -#define BUILTIN_FLAG_ASSIGNMENT 0x02 -#define BUILTIN_FLAG_POSIX_BUILTIN 0x04 - -#define BASE_INDENT 4 - -/* If this stream descriptor is non-zero, then write - texinfo documentation to it. */ -FILE *documentation_file = (FILE *)NULL; - -/* Non-zero means to only produce documentation. */ -int only_documentation = 0; - -/* Non-zero means to not do any productions. */ -int inhibit_production = 0; - -/* Non-zero means to not add functions (xxx_builtin) to the members of the - produced `struct builtin []' */ -int inhibit_functions = 0; - -/* Non-zero means to produce separate help files for each builtin, named by - the builtin name, in `./helpfiles'. */ -int separate_helpfiles = 0; - -/* Non-zero means to create single C strings for each `longdoc', with - embedded newlines, for ease of translation. */ -int single_longdoc_strings = 1; - -/* The name of a directory into which the separate external help files will - eventually be installed. */ -char *helpfile_directory; - -/* The name of a directory to precede the filename when reporting - errors. */ -char *error_directory = (char *)NULL; - -/* The name of the structure file. */ -char *struct_filename = (char *)NULL; - -/* The name of the external declaration file. */ -char *extern_filename = (char *)NULL; - -/* Here is a structure for manipulating arrays of data. */ -typedef struct { - int size; /* Number of slots allocated to array. */ - int sindex; /* Current location in array. */ - int width; /* Size of each element. */ - int growth_rate; /* How fast to grow. */ - char **array; /* The array itself. */ -} ARRAY; - -/* Here is a structure defining a single BUILTIN. */ -typedef struct { - char *name; /* The name of this builtin. */ - char *function; /* The name of the function to call. */ - char *shortdoc; /* The short documentation for this builtin. */ - char *docname; /* Possible name for documentation string. */ - ARRAY *longdoc; /* The long documentation for this builtin. */ - ARRAY *dependencies; /* Null terminated array of #define names. */ - int flags; /* Flags for this builtin. */ -} BUILTIN_DESC; - -/* Here is a structure which defines a DEF file. */ -typedef struct { - char *filename; /* The name of the input def file. */ - ARRAY *lines; /* The contents of the file. */ - int line_number; /* The current line number. */ - char *production; /* The name of the production file. */ - FILE *output; /* Open file stream for PRODUCTION. */ - ARRAY *builtins; /* Null terminated array of BUILTIN_DESC *. */ -} DEF_FILE; - -/* The array of all builtins encountered during execution of this code. */ -ARRAY *saved_builtins = (ARRAY *)NULL; - -/* The Posix.2 so-called `special' builtins. */ -char *special_builtins[] = -{ - ":", ".", "source", "break", "continue", "eval", "exec", "exit", - "export", "readonly", "return", "set", "shift", "times", "trap", "unset", - (char *)NULL -}; - -/* The builtin commands that take assignment statements as arguments. */ -char *assignment_builtins[] = -{ - "alias", "declare", "export", "local", "readonly", "typeset", - (char *)NULL -}; - -/* The builtin commands that are special to the POSIX search order. */ -char *posix_builtins[] = -{ - "alias", "bg", "cd", "command", "false", "fc", "fg", "getopts", "jobs", - "kill", "newgrp", "pwd", "read", "true", "umask", "unalias", "wait", - (char *)NULL -}; - -/* Forward declarations. */ -static int is_special_builtin (); -static int is_assignment_builtin (); -static int is_posix_builtin (); - -#if !defined (HAVE_RENAME) -static int rename (); -#endif - -void extract_info (); - -void file_error (); -void line_error (); - -void write_file_headers (); -void write_file_footers (); -void write_ifdefs (); -void write_endifs (); -void write_documentation (); -void write_longdocs (); -void write_builtins (); - -int write_helpfiles (); - -void free_defs (); -void add_documentation (); - -void must_be_building (); -void remove_trailing_whitespace (); - -#define document_name(b) ((b)->docname ? (b)->docname : (b)->name) - - -/* For each file mentioned on the command line, process it and - write the information to STRUCTFILE and EXTERNFILE, while - creating the production file if neccessary. */ -int -main (argc, argv) - int argc; - char **argv; -{ - int arg_index = 1; - FILE *structfile, *externfile; - char *documentation_filename, *temp_struct_filename; - - structfile = externfile = (FILE *)NULL; - documentation_filename = DOCFILE; - temp_struct_filename = (char *)NULL; - - while (arg_index < argc && argv[arg_index][0] == '-') - { - char *arg = argv[arg_index++]; - - if (strcmp (arg, "-externfile") == 0) - extern_filename = argv[arg_index++]; - else if (strcmp (arg, "-structfile") == 0) - struct_filename = argv[arg_index++]; - else if (strcmp (arg, "-noproduction") == 0) - inhibit_production = 1; - else if (strcmp (arg, "-nofunctions") == 0) - inhibit_functions = 1; - else if (strcmp (arg, "-document") == 0) - documentation_file = fopen (documentation_filename, "w"); - else if (strcmp (arg, "-D") == 0) - { - int len; - - if (error_directory) - free (error_directory); - - error_directory = xmalloc (2 + strlen (argv[arg_index])); - strcpy (error_directory, argv[arg_index]); - len = strlen (error_directory); - - if (len && error_directory[len - 1] != '/') - strcat (error_directory, "/"); - - arg_index++; - } - else if (strcmp (arg, "-documentonly") == 0) - { - only_documentation = 1; - documentation_file = fopen (documentation_filename, "w"); - } - else if (strcmp (arg, "-H") == 0) - { - separate_helpfiles = 1; - helpfile_directory = argv[arg_index++]; - } - else if (strcmp (arg, "-S") == 0) - single_longdoc_strings = 0; - else - { - fprintf (stderr, "%s: Unknown flag %s.\n", argv[0], arg); - exit (2); - } - } - - /* If there are no files to process, just quit now. */ - if (arg_index == argc) - exit (0); - - if (!only_documentation) - { - /* Open the files. */ - if (struct_filename) - { - temp_struct_filename = xmalloc (15); - sprintf (temp_struct_filename, "mk-%ld", (long) getpid ()); - structfile = fopen (temp_struct_filename, "w"); - - if (!structfile) - file_error (temp_struct_filename); - } - - if (extern_filename) - { - externfile = fopen (extern_filename, "w"); - - if (!externfile) - file_error (extern_filename); - } - - /* Write out the headers. */ - write_file_headers (structfile, externfile); - } - - if (documentation_file) - { - fprintf (documentation_file, "@c Table of builtins created with %s.\n", - argv[0]); - fprintf (documentation_file, "@ftable @asis\n"); - } - - /* Process the .def files. */ - while (arg_index < argc) - { - register char *arg; - - arg = argv[arg_index++]; - - extract_info (arg, structfile, externfile); - } - - /* Close the files. */ - if (!only_documentation) - { - /* Write the footers. */ - write_file_footers (structfile, externfile); - - if (structfile) - { - write_longdocs (structfile, saved_builtins); - fclose (structfile); - rename (temp_struct_filename, struct_filename); - } - - if (externfile) - fclose (externfile); - } - - if (separate_helpfiles) - { - write_helpfiles (saved_builtins); - } - - if (documentation_file) - { - fprintf (documentation_file, "@end ftable\n"); - fclose (documentation_file); - } - - exit (0); -} - -/* **************************************************************** */ -/* */ -/* Array Functions and Manipulators */ -/* */ -/* **************************************************************** */ - -/* Make a new array, and return a pointer to it. The array will - contain elements of size WIDTH, and is initialized to no elements. */ -ARRAY * -array_create (width) - int width; -{ - ARRAY *array; - - array = (ARRAY *)xmalloc (sizeof (ARRAY)); - array->size = 0; - array->sindex = 0; - array->width = width; - - /* Default to increasing size in units of 20. */ - array->growth_rate = 20; - - array->array = (char **)NULL; - - return (array); -} - -/* Copy the array of strings in ARRAY. */ -ARRAY * -copy_string_array (array) - ARRAY *array; -{ - register int i; - ARRAY *copy; - - if (!array) - return (ARRAY *)NULL; - - copy = array_create (sizeof (char *)); - - copy->size = array->size; - copy->sindex = array->sindex; - copy->width = array->width; - - copy->array = (char **)xmalloc ((1 + array->sindex) * sizeof (char *)); - - for (i = 0; i < array->sindex; i++) - copy->array[i] = savestring (array->array[i]); - - copy->array[i] = (char *)NULL; - - return (copy); -} - -/* Add ELEMENT to ARRAY, growing the array if neccessary. */ -void -array_add (element, array) - char *element; - ARRAY *array; -{ - if (array->sindex + 2 > array->size) - array->array = (char **)xrealloc - (array->array, (array->size += array->growth_rate) * array->width); - - array->array[array->sindex++] = element; - array->array[array->sindex] = (char *)NULL; -} - -/* Free an allocated array and data pointer. */ -void -array_free (array) - ARRAY *array; -{ - if (array->array) - free (array->array); - - free (array); -} - -/* **************************************************************** */ -/* */ -/* Processing a DEF File */ -/* */ -/* **************************************************************** */ - -/* The definition of a function. */ -typedef int Function (); -typedef int mk_handler_func_t __P((char *, DEF_FILE *, char *)); - -/* Structure handles processor directives. */ -typedef struct { - char *directive; - mk_handler_func_t *function; -} HANDLER_ENTRY; - -extern int builtin_handler __P((char *, DEF_FILE *, char *)); -extern int function_handler __P((char *, DEF_FILE *, char *)); -extern int short_doc_handler __P((char *, DEF_FILE *, char *)); -extern int comment_handler __P((char *, DEF_FILE *, char *)); -extern int depends_on_handler __P((char *, DEF_FILE *, char *)); -extern int produces_handler __P((char *, DEF_FILE *, char *)); -extern int end_handler __P((char *, DEF_FILE *, char *)); -extern int docname_handler __P((char *, DEF_FILE *, char *)); - -HANDLER_ENTRY handlers[] = { - { "BUILTIN", builtin_handler }, - { "DOCNAME", docname_handler }, - { "FUNCTION", function_handler }, - { "SHORT_DOC", short_doc_handler }, - { "$", comment_handler }, - { "COMMENT", comment_handler }, - { "DEPENDS_ON", depends_on_handler }, - { "PRODUCES", produces_handler }, - { "END", end_handler }, - { (char *)NULL, (mk_handler_func_t *)NULL } -}; - -/* Return the entry in the table of handlers for NAME. */ -HANDLER_ENTRY * -find_directive (directive) - char *directive; -{ - register int i; - - for (i = 0; handlers[i].directive; i++) - if (strcmp (handlers[i].directive, directive) == 0) - return (&handlers[i]); - - return ((HANDLER_ENTRY *)NULL); -} - -/* Non-zero indicates that a $BUILTIN has been seen, but not - the corresponding $END. */ -static int building_builtin = 0; - -/* Non-zero means to output cpp line and file information before - printing the current line to the production file. */ -int output_cpp_line_info = 0; - -/* The main function of this program. Read FILENAME and act on what is - found. Lines not starting with a dollar sign are copied to the - $PRODUCES target, if one is present. Lines starting with a dollar sign - are directives to this program, specifying the name of the builtin, the - function to call, the short documentation and the long documentation - strings. FILENAME can contain multiple $BUILTINs, but only one $PRODUCES - target. After the file has been processed, write out the names of - builtins found in each $BUILTIN. Plain text found before the $PRODUCES - is ignored, as is "$$ comment text". */ -void -extract_info (filename, structfile, externfile) - char *filename; - FILE *structfile, *externfile; -{ - register int i; - DEF_FILE *defs; - struct stat finfo; - size_t file_size; - char *buffer, *line; - int fd, nr; - - if (stat (filename, &finfo) == -1) - file_error (filename); - - fd = open (filename, O_RDONLY, 0666); - - if (fd == -1) - file_error (filename); - - file_size = (size_t)finfo.st_size; - buffer = xmalloc (1 + file_size); - - if ((nr = read (fd, buffer, file_size)) < 0) - file_error (filename); - - /* This is needed on WIN32, and does not hurt on Unix. */ - if (nr < file_size) - file_size = nr; - - close (fd); - - if (nr == 0) - { - fprintf (stderr, "mkbuiltins: %s: skipping zero-length file\n", filename); - free (buffer); - return; - } - - /* Create and fill in the initial structure describing this file. */ - defs = (DEF_FILE *)xmalloc (sizeof (DEF_FILE)); - defs->filename = filename; - defs->lines = array_create (sizeof (char *)); - defs->line_number = 0; - defs->production = (char *)NULL; - defs->output = (FILE *)NULL; - defs->builtins = (ARRAY *)NULL; - - /* Build the array of lines. */ - i = 0; - while (i < file_size) - { - array_add (&buffer[i], defs->lines); - - while (i < file_size && buffer[i] != '\n') - i++; - buffer[i++] = '\0'; - } - - /* Begin processing the input file. We don't write any output - until we have a file to write output to. */ - output_cpp_line_info = 1; - - /* Process each line in the array. */ - for (i = 0; line = defs->lines->array[i]; i++) - { - defs->line_number = i; - - if (*line == '$') - { - register int j; - char *directive; - HANDLER_ENTRY *handler; - - /* Isolate the directive. */ - for (j = 0; line[j] && !whitespace (line[j]); j++); - - directive = xmalloc (j); - strncpy (directive, line + 1, j - 1); - directive[j -1] = '\0'; - - /* Get the function handler and call it. */ - handler = find_directive (directive); - - if (!handler) - { - line_error (defs, "Unknown directive `%s'", directive); - free (directive); - continue; - } - else - { - /* Advance to the first non-whitespace character. */ - while (whitespace (line[j])) - j++; - - /* Call the directive handler with the FILE, and ARGS. */ - (*(handler->function)) (directive, defs, line + j); - } - free (directive); - } - else - { - if (building_builtin) - add_documentation (defs, line); - else if (defs->output) - { - if (output_cpp_line_info) - { - /* If we're handed an absolute pathname, don't prepend - the directory name. */ - if (defs->filename[0] == '/') - fprintf (defs->output, "#line %d \"%s\"\n", - defs->line_number + 1, defs->filename); - else - fprintf (defs->output, "#line %d \"%s%s\"\n", - defs->line_number + 1, - error_directory ? error_directory : "./", - defs->filename); - output_cpp_line_info = 0; - } - - fprintf (defs->output, "%s\n", line); - } - } - } - - /* Close the production file. */ - if (defs->output) - fclose (defs->output); - - /* The file has been processed. Write the accumulated builtins to - the builtins.c file, and write the extern definitions to the - builtext.h file. */ - write_builtins (defs, structfile, externfile); - - free (buffer); - free_defs (defs); -} - -#define free_safely(x) if (x) free (x) - -static void -free_builtin (builtin) - BUILTIN_DESC *builtin; -{ - register int i; - - free_safely (builtin->name); - free_safely (builtin->function); - free_safely (builtin->shortdoc); - free_safely (builtin->docname); - - if (builtin->longdoc) - array_free (builtin->longdoc); - - if (builtin->dependencies) - { - for (i = 0; builtin->dependencies->array[i]; i++) - free (builtin->dependencies->array[i]); - array_free (builtin->dependencies); - } -} - -/* Free all of the memory allocated to a DEF_FILE. */ -void -free_defs (defs) - DEF_FILE *defs; -{ - register int i; - register BUILTIN_DESC *builtin; - - if (defs->production) - free (defs->production); - - if (defs->lines) - array_free (defs->lines); - - if (defs->builtins) - { - for (i = 0; builtin = (BUILTIN_DESC *)defs->builtins->array[i]; i++) - { - free_builtin (builtin); - free (builtin); - } - array_free (defs->builtins); - } - free (defs); -} - -/* **************************************************************** */ -/* */ -/* The Handler Functions Themselves */ -/* */ -/* **************************************************************** */ - -/* Strip surrounding whitespace from STRING, and - return a pointer to the start of it. */ -char * -strip_whitespace (string) - char *string; -{ - while (whitespace (*string)) - string++; - - remove_trailing_whitespace (string); - return (string); -} - -/* Remove only the trailing whitespace from STRING. */ -void -remove_trailing_whitespace (string) - char *string; -{ - register int i; - - i = strlen (string) - 1; - - while (i > 0 && whitespace (string[i])) - i--; - - string[++i] = '\0'; -} - -/* Ensure that there is a argument in STRING and return it. - FOR_WHOM is the name of the directive which needs the argument. - DEFS is the DEF_FILE in which the directive is found. - If there is no argument, produce an error. */ -char * -get_arg (for_whom, defs, string) - char *for_whom, *string; - DEF_FILE *defs; -{ - char *new; - - new = strip_whitespace (string); - - if (!*new) - line_error (defs, "%s requires an argument", for_whom); - - return (savestring (new)); -} - -/* Error if not building a builtin. */ -void -must_be_building (directive, defs) - char *directive; - DEF_FILE *defs; -{ - if (!building_builtin) - line_error (defs, "%s must be inside of a $BUILTIN block", directive); -} - -/* Return the current builtin. */ -BUILTIN_DESC * -current_builtin (directive, defs) - char *directive; - DEF_FILE *defs; -{ - must_be_building (directive, defs); - if (defs->builtins) - return ((BUILTIN_DESC *)defs->builtins->array[defs->builtins->sindex - 1]); - else - return ((BUILTIN_DESC *)NULL); -} - -/* Add LINE to the long documentation for the current builtin. - Ignore blank lines until the first non-blank line has been seen. */ -void -add_documentation (defs, line) - DEF_FILE *defs; - char *line; -{ - register BUILTIN_DESC *builtin; - - builtin = current_builtin ("(implied LONGDOC)", defs); - - remove_trailing_whitespace (line); - - if (!*line && !builtin->longdoc) - return; - - if (!builtin->longdoc) - builtin->longdoc = array_create (sizeof (char *)); - - array_add (line, builtin->longdoc); -} - -/* How to handle the $BUILTIN directive. */ -int -builtin_handler (self, defs, arg) - char *self; - DEF_FILE *defs; - char *arg; -{ - BUILTIN_DESC *new; - char *name; - - /* If we are already building a builtin, we cannot start a new one. */ - if (building_builtin) - { - line_error (defs, "%s found before $END", self); - return (-1); - } - - output_cpp_line_info++; - - /* Get the name of this builtin, and stick it in the array. */ - name = get_arg (self, defs, arg); - - /* If this is the first builtin, create the array to hold them. */ - if (!defs->builtins) - defs->builtins = array_create (sizeof (BUILTIN_DESC *)); - - new = (BUILTIN_DESC *)xmalloc (sizeof (BUILTIN_DESC)); - new->name = name; - new->function = (char *)NULL; - new->shortdoc = (char *)NULL; - new->docname = (char *)NULL; - new->longdoc = (ARRAY *)NULL; - new->dependencies = (ARRAY *)NULL; - new->flags = 0; - - if (is_special_builtin (name)) - new->flags |= BUILTIN_FLAG_SPECIAL; - if (is_assignment_builtin (name)) - new->flags |= BUILTIN_FLAG_ASSIGNMENT; - if (is_posix_builtin (name)) - new->flags |= BUILTIN_FLAG_POSIX_BUILTIN; - - array_add ((char *)new, defs->builtins); - building_builtin = 1; - - return (0); -} - -/* How to handle the $FUNCTION directive. */ -int -function_handler (self, defs, arg) - char *self; - DEF_FILE *defs; - char *arg; -{ - register BUILTIN_DESC *builtin; - - builtin = current_builtin (self, defs); - - if (builtin == 0) - { - line_error (defs, "syntax error: no current builtin for $FUNCTION directive"); - exit (1); - } - if (builtin->function) - line_error (defs, "%s already has a function (%s)", - builtin->name, builtin->function); - else - builtin->function = get_arg (self, defs, arg); - - return (0); -} - -/* How to handle the $DOCNAME directive. */ -int -docname_handler (self, defs, arg) - char *self; - DEF_FILE *defs; - char *arg; -{ - register BUILTIN_DESC *builtin; - - builtin = current_builtin (self, defs); - - if (builtin->docname) - line_error (defs, "%s already had a docname (%s)", - builtin->name, builtin->docname); - else - builtin->docname = get_arg (self, defs, arg); - - return (0); -} - -/* How to handle the $SHORT_DOC directive. */ -int -short_doc_handler (self, defs, arg) - char *self; - DEF_FILE *defs; - char *arg; -{ - register BUILTIN_DESC *builtin; - - builtin = current_builtin (self, defs); - - if (builtin->shortdoc) - line_error (defs, "%s already has short documentation (%s)", - builtin->name, builtin->shortdoc); - else - builtin->shortdoc = get_arg (self, defs, arg); - - return (0); -} - -/* How to handle the $COMMENT directive. */ -int -comment_handler (self, defs, arg) - char *self; - DEF_FILE *defs; - char *arg; -{ - return (0); -} - -/* How to handle the $DEPENDS_ON directive. */ -int -depends_on_handler (self, defs, arg) - char *self; - DEF_FILE *defs; - char *arg; -{ - register BUILTIN_DESC *builtin; - char *dependent; - - builtin = current_builtin (self, defs); - dependent = get_arg (self, defs, arg); - - if (!builtin->dependencies) - builtin->dependencies = array_create (sizeof (char *)); - - array_add (dependent, builtin->dependencies); - - return (0); -} - -/* How to handle the $PRODUCES directive. */ -int -produces_handler (self, defs, arg) - char *self; - DEF_FILE *defs; - char *arg; -{ - /* If just hacking documentation, don't change any of the production - files. */ - if (only_documentation) - return (0); - - output_cpp_line_info++; - - if (defs->production) - line_error (defs, "%s already has a %s definition", defs->filename, self); - else - { - defs->production = get_arg (self, defs, arg); - - if (inhibit_production) - return (0); - - defs->output = fopen (defs->production, "w"); - - if (!defs->output) - file_error (defs->production); - - fprintf (defs->output, "/* %s, created from %s. */\n", - defs->production, defs->filename); - } - return (0); -} - -/* How to handle the $END directive. */ -int -end_handler (self, defs, arg) - char *self; - DEF_FILE *defs; - char *arg; -{ - must_be_building (self, defs); - building_builtin = 0; - return (0); -} - -/* **************************************************************** */ -/* */ -/* Error Handling Functions */ -/* */ -/* **************************************************************** */ - -/* Produce an error for DEFS with FORMAT and ARGS. */ -void -line_error (defs, format, arg1, arg2) - DEF_FILE *defs; - char *format, *arg1, *arg2; -{ - if (defs->filename[0] != '/') - fprintf (stderr, "%s", error_directory ? error_directory : "./"); - fprintf (stderr, "%s:%d:", defs->filename, defs->line_number + 1); - fprintf (stderr, format, arg1, arg2); - fprintf (stderr, "\n"); - fflush (stderr); -} - -/* Print error message for FILENAME. */ -void -file_error (filename) - char *filename; -{ - perror (filename); - exit (2); -} - -/* **************************************************************** */ -/* */ -/* xmalloc and xrealloc () */ -/* */ -/* **************************************************************** */ - -static void memory_error_and_abort (); - -static char * -xmalloc (bytes) - int bytes; -{ - char *temp = (char *)malloc (bytes); - - if (!temp) - memory_error_and_abort (); - return (temp); -} - -static char * -xrealloc (pointer, bytes) - char *pointer; - int bytes; -{ - char *temp; - - if (!pointer) - temp = (char *)malloc (bytes); - else - temp = (char *)realloc (pointer, bytes); - - if (!temp) - memory_error_and_abort (); - - return (temp); -} - -static void -memory_error_and_abort () -{ - fprintf (stderr, "mkbuiltins: out of virtual memory\n"); - abort (); -} - -/* **************************************************************** */ -/* */ -/* Creating the Struct and Extern Files */ -/* */ -/* **************************************************************** */ - -/* Return a pointer to a newly allocated builtin which is - an exact copy of BUILTIN. */ -BUILTIN_DESC * -copy_builtin (builtin) - BUILTIN_DESC *builtin; -{ - BUILTIN_DESC *new; - - new = (BUILTIN_DESC *)xmalloc (sizeof (BUILTIN_DESC)); - - new->name = savestring (builtin->name); - new->shortdoc = savestring (builtin->shortdoc); - new->longdoc = copy_string_array (builtin->longdoc); - new->dependencies = copy_string_array (builtin->dependencies); - - new->function = - builtin->function ? savestring (builtin->function) : (char *)NULL; - new->docname = - builtin->docname ? savestring (builtin->docname) : (char *)NULL; - - return (new); -} - -/* How to save away a builtin. */ -void -save_builtin (builtin) - BUILTIN_DESC *builtin; -{ - BUILTIN_DESC *newbuiltin; - - newbuiltin = copy_builtin (builtin); - - /* If this is the first builtin to be saved, create the array - to hold it. */ - if (!saved_builtins) - saved_builtins = array_create (sizeof (BUILTIN_DESC *)); - - array_add ((char *)newbuiltin, saved_builtins); -} - -/* Flags that mean something to write_documentation (). */ -#define STRING_ARRAY 0x01 -#define TEXINFO 0x02 -#define PLAINTEXT 0x04 -#define HELPFILE 0x08 - -char *structfile_header[] = { - "/* builtins.c -- the built in shell commands. */", - "", - "/* This file is manufactured by ./mkbuiltins, and should not be", - " edited by hand. See the source to mkbuiltins for details. */", - "", - "/* Copyright (C) 1987-2012 Free Software Foundation, Inc.", - "", - " This file is part of GNU Bash, the Bourne Again SHell.", - "", - " Bash is free software: you can redistribute it and/or modify", - " it under the terms of the GNU General Public License as published by", - " the Free Software Foundation, either version 3 of the License, or", - " (at your option) any later version.", - "", - " Bash is distributed in the hope that it will be useful,", - " but WITHOUT ANY WARRANTY; without even the implied warranty of", - " MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the", - " GNU General Public License for more details.", - "", - " You should have received a copy of the GNU General Public License", - " along with Bash. If not, see .", - "*/", - "", - "/* The list of shell builtins. Each element is name, function, flags,", - " long-doc, short-doc. The long-doc field contains a pointer to an array", - " of help lines. The function takes a WORD_LIST *; the first word in the", - " list is the first arg to the command. The list has already had word", - " expansion performed.", - "", - " Functions which need to look at only the simple commands (e.g.", - " the enable_builtin ()), should ignore entries where", - " (array[i].function == (sh_builtin_func_t *)NULL). Such entries are for", - " the list of shell reserved control structures, like `if' and `while'.", - " The end of the list is denoted with a NULL name field. */", - "", - "#include \"../builtins.h\"", - (char *)NULL - }; - -char *structfile_footer[] = { - " { (char *)0x0, (sh_builtin_func_t *)0x0, 0, (char **)0x0, (char *)0x0, (char *)0x0 }", - "};", - "", - "struct builtin *shell_builtins = static_shell_builtins;", - "struct builtin *current_builtin;", - "", - "int num_shell_builtins =", - "\tsizeof (static_shell_builtins) / sizeof (struct builtin) - 1;", - (char *)NULL -}; - -/* Write out any neccessary opening information for - STRUCTFILE and EXTERNFILE. */ -void -write_file_headers (structfile, externfile) - FILE *structfile, *externfile; -{ - register int i; - - if (structfile) - { - for (i = 0; structfile_header[i]; i++) - fprintf (structfile, "%s\n", structfile_header[i]); - - fprintf (structfile, "#include \"%s\"\n", - extern_filename ? extern_filename : "builtext.h"); - - fprintf (structfile, "#include \"bashintl.h\"\n"); - - fprintf (structfile, "\nstruct builtin static_shell_builtins[] = {\n"); - } - - if (externfile) - fprintf (externfile, - "/* %s - The list of builtins found in libbuiltins.a. */\n", - extern_filename ? extern_filename : "builtext.h"); -} - -/* Write out any necessary closing information for - STRUCTFILE and EXTERNFILE. */ -void -write_file_footers (structfile, externfile) - FILE *structfile, *externfile; -{ - register int i; - - /* Write out the footers. */ - if (structfile) - { - for (i = 0; structfile_footer[i]; i++) - fprintf (structfile, "%s\n", structfile_footer[i]); - } -} - -/* Write out the information accumulated in DEFS to - STRUCTFILE and EXTERNFILE. */ -void -write_builtins (defs, structfile, externfile) - DEF_FILE *defs; - FILE *structfile, *externfile; -{ - register int i; - - /* Write out the information. */ - if (defs->builtins) - { - register BUILTIN_DESC *builtin; - - for (i = 0; i < defs->builtins->sindex; i++) - { - builtin = (BUILTIN_DESC *)defs->builtins->array[i]; - - /* Write out any #ifdefs that may be there. */ - if (!only_documentation) - { - if (builtin->dependencies) - { - write_ifdefs (externfile, builtin->dependencies->array); - write_ifdefs (structfile, builtin->dependencies->array); - } - - /* Write the extern definition. */ - if (externfile) - { - if (builtin->function) - fprintf (externfile, "extern int %s __P((WORD_LIST *));\n", - builtin->function); - - fprintf (externfile, "extern char * const %s_doc[];\n", - document_name (builtin)); - } - - /* Write the structure definition. */ - if (structfile) - { - fprintf (structfile, " { \"%s\", ", builtin->name); - - if (builtin->function && inhibit_functions == 0) - fprintf (structfile, "%s, ", builtin->function); - else - fprintf (structfile, "(sh_builtin_func_t *)0x0, "); - - fprintf (structfile, "%s%s%s%s, %s_doc,\n", - "BUILTIN_ENABLED | STATIC_BUILTIN", - (builtin->flags & BUILTIN_FLAG_SPECIAL) ? " | SPECIAL_BUILTIN" : "", - (builtin->flags & BUILTIN_FLAG_ASSIGNMENT) ? " | ASSIGNMENT_BUILTIN" : "", - (builtin->flags & BUILTIN_FLAG_POSIX_BUILTIN) ? " | POSIX_BUILTIN" : "", - document_name (builtin)); - - if (inhibit_functions) - fprintf - (structfile, " N_(\"%s\"), \"%s\" },\n", - builtin->shortdoc ? builtin->shortdoc : builtin->name, - document_name (builtin)); - else - fprintf - (structfile, " N_(\"%s\"), (char *)NULL },\n", - builtin->shortdoc ? builtin->shortdoc : builtin->name); - - } - - if (structfile || separate_helpfiles) - /* Save away this builtin for later writing of the - long documentation strings. */ - save_builtin (builtin); - - /* Write out the matching #endif, if neccessary. */ - if (builtin->dependencies) - { - if (externfile) - write_endifs (externfile, builtin->dependencies->array); - - if (structfile) - write_endifs (structfile, builtin->dependencies->array); - } - } - - if (documentation_file) - { - fprintf (documentation_file, "@item %s\n", builtin->name); - write_documentation - (documentation_file, builtin->longdoc->array, 0, TEXINFO); - } - } - } -} - -/* Write out the long documentation strings in BUILTINS to STREAM. */ -void -write_longdocs (stream, builtins) - FILE *stream; - ARRAY *builtins; -{ - register int i; - register BUILTIN_DESC *builtin; - char *dname; - char *sarray[2]; - - for (i = 0; i < builtins->sindex; i++) - { - builtin = (BUILTIN_DESC *)builtins->array[i]; - - if (builtin->dependencies) - write_ifdefs (stream, builtin->dependencies->array); - - /* Write the long documentation strings. */ - dname = document_name (builtin); - fprintf (stream, "char * const %s_doc[] =", dname); - - if (separate_helpfiles) - { - int l = strlen (helpfile_directory) + strlen (dname) + 1; - sarray[0] = (char *)xmalloc (l + 1); - sprintf (sarray[0], "%s/%s", helpfile_directory, dname); - sarray[1] = (char *)NULL; - write_documentation (stream, sarray, 0, STRING_ARRAY|HELPFILE); - free (sarray[0]); - } - else - write_documentation (stream, builtin->longdoc->array, 0, STRING_ARRAY); - - if (builtin->dependencies) - write_endifs (stream, builtin->dependencies->array); - - } -} - -void -write_dummy_declarations (stream, builtins) - FILE *stream; - ARRAY *builtins; -{ - register int i; - BUILTIN_DESC *builtin; - - for (i = 0; structfile_header[i]; i++) - fprintf (stream, "%s\n", structfile_header[i]); - - for (i = 0; i < builtins->sindex; i++) - { - builtin = (BUILTIN_DESC *)builtins->array[i]; - - /* How to guarantee that no builtin is written more than once? */ - fprintf (stream, "int %s () { return (0); }\n", builtin->function); - } -} - -/* Write an #ifdef string saying what needs to be defined (or not defined) - in order to allow compilation of the code that will follow. - STREAM is the stream to write the information to, - DEFINES is a null terminated array of define names. - If a define is preceded by an `!', then the sense of the test is - reversed. */ -void -write_ifdefs (stream, defines) - FILE *stream; - char **defines; -{ - register int i; - - if (!stream) - return; - - fprintf (stream, "#if "); - - for (i = 0; defines[i]; i++) - { - char *def = defines[i]; - - if (*def == '!') - fprintf (stream, "!defined (%s)", def + 1); - else - fprintf (stream, "defined (%s)", def); - - if (defines[i + 1]) - fprintf (stream, " && "); - } - fprintf (stream, "\n"); -} - -/* Write an #endif string saying what defines controlled the compilation - of the immediately preceding code. - STREAM is the stream to write the information to. - DEFINES is a null terminated array of define names. */ -void -write_endifs (stream, defines) - FILE *stream; - char **defines; -{ - register int i; - - if (!stream) - return; - - fprintf (stream, "#endif /* "); - - for (i = 0; defines[i]; i++) - { - fprintf (stream, "%s", defines[i]); - - if (defines[i + 1]) - fprintf (stream, " && "); - } - - fprintf (stream, " */\n"); -} - -/* Write DOCUMENTATION to STREAM, perhaps surrounding it with double-quotes - and quoting special characters in the string. Handle special things for - internationalization (gettext) and the single-string vs. multiple-strings - issues. */ -void -write_documentation (stream, documentation, indentation, flags) - FILE *stream; - char **documentation; - int indentation, flags; -{ - register int i, j; - register char *line; - int string_array, texinfo, base_indent, filename_p; - - if (stream == 0) - return; - - string_array = flags & STRING_ARRAY; - filename_p = flags & HELPFILE; - - if (string_array) - { - fprintf (stream, " {\n#if defined (HELP_BUILTIN)\n"); /* } */ - if (single_longdoc_strings) - { - if (filename_p == 0) - { - if (documentation && documentation[0] && documentation[0][0]) - fprintf (stream, "N_(\""); - else - fprintf (stream, "N_(\" "); /* the empty string translates specially. */ - } - else - fprintf (stream, "\""); - } - } - - base_indent = (string_array && single_longdoc_strings && filename_p == 0) ? BASE_INDENT : 0; - - for (i = 0, texinfo = (flags & TEXINFO); documentation && (line = documentation[i]); i++) - { - /* Allow #ifdef's to be written out verbatim, but don't put them into - separate help files. */ - if (*line == '#') - { - if (string_array && filename_p == 0 && single_longdoc_strings == 0) - fprintf (stream, "%s\n", line); - continue; - } - - /* prefix with N_( for gettext */ - if (string_array && single_longdoc_strings == 0) - { - if (filename_p == 0) - { - if (line[0]) - fprintf (stream, " N_(\""); - else - fprintf (stream, " N_(\" "); /* the empty string translates specially. */ - } - else - fprintf (stream, " \""); - } - - if (indentation) - for (j = 0; j < indentation; j++) - fprintf (stream, " "); - - /* Don't indent the first line, because of how the help builtin works. */ - if (i == 0) - indentation += base_indent; - - if (string_array) - { - for (j = 0; line[j]; j++) - { - switch (line[j]) - { - case '\\': - case '"': - fprintf (stream, "\\%c", line[j]); - break; - - default: - fprintf (stream, "%c", line[j]); - } - } - - /* closing right paren for gettext */ - if (single_longdoc_strings == 0) - { - if (filename_p == 0) - fprintf (stream, "\"),\n"); - else - fprintf (stream, "\",\n"); - } - else if (documentation[i+1]) - /* don't add extra newline after last line */ - fprintf (stream, "\\n\\\n"); - } - else if (texinfo) - { - for (j = 0; line[j]; j++) - { - switch (line[j]) - { - case '@': - case '{': - case '}': - fprintf (stream, "@%c", line[j]); - break; - - default: - fprintf (stream, "%c", line[j]); - } - } - fprintf (stream, "\n"); - } - else - fprintf (stream, "%s\n", line); - } - - /* closing right paren for gettext */ - if (string_array && single_longdoc_strings) - { - if (filename_p == 0) - fprintf (stream, "\"),\n"); - else - fprintf (stream, "\",\n"); - } - - if (string_array) - fprintf (stream, "#endif /* HELP_BUILTIN */\n (char *)NULL\n};\n"); -} - -int -write_helpfiles (builtins) - ARRAY *builtins; -{ - char *helpfile, *bname; - FILE *helpfp; - int i, hdlen; - BUILTIN_DESC *builtin; - - i = mkdir ("helpfiles", 0777); - if (i < 0 && errno != EEXIST) - { - fprintf (stderr, "write_helpfiles: helpfiles: cannot create directory\n"); - return -1; - } - - hdlen = strlen ("helpfiles/"); - for (i = 0; i < builtins->sindex; i++) - { - builtin = (BUILTIN_DESC *)builtins->array[i]; - - bname = document_name (builtin); - helpfile = (char *)xmalloc (hdlen + strlen (bname) + 1); - sprintf (helpfile, "helpfiles/%s", bname); - - helpfp = fopen (helpfile, "w"); - if (helpfp == 0) - { - fprintf (stderr, "write_helpfiles: cannot open %s\n", helpfile); - free (helpfile); - continue; - } - - write_documentation (helpfp, builtin->longdoc->array, 4, PLAINTEXT); - - fflush (helpfp); - fclose (helpfp); - free (helpfile); - } - return 0; -} - -static int -_find_in_table (name, name_table) - char *name, *name_table[]; -{ - register int i; - - for (i = 0; name_table[i]; i++) - if (strcmp (name, name_table[i]) == 0) - return 1; - return 0; -} - -static int -is_special_builtin (name) - char *name; -{ - return (_find_in_table (name, special_builtins)); -} - -static int -is_assignment_builtin (name) - char *name; -{ - return (_find_in_table (name, assignment_builtins)); -} - -static int -is_posix_builtin (name) - char *name; -{ - return (_find_in_table (name, posix_builtins)); -} - -#if !defined (HAVE_RENAME) -static int -rename (from, to) - char *from, *to; -{ - unlink (to); - if (link (from, to) < 0) - return (-1); - unlink (from); - return (0); -} -#endif /* !HAVE_RENAME */ diff --git a/builtins/printf.def~ b/builtins/printf.def~ deleted file mode 100644 index a5162aa8a..000000000 --- a/builtins/printf.def~ +++ /dev/null @@ -1,1252 +0,0 @@ -This file is printf.def, from which is created printf.c. -It implements the builtin "printf" in Bash. - -Copyright (C) 1997-2010 Free Software Foundation, Inc. - -This file is part of GNU Bash, the Bourne Again SHell. - -Bash is free software: you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation, either version 3 of the License, or -(at your option) any later version. - -Bash is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with Bash. If not, see . - -$PRODUCES printf.c - -$BUILTIN printf -$FUNCTION printf_builtin -$SHORT_DOC printf [-v var] format [arguments] -Formats and prints ARGUMENTS under control of the FORMAT. - -Options: - -v var assign the output to shell variable VAR rather than - display it on the standard output - -FORMAT is a character string which contains three types of objects: plain -characters, which are simply copied to standard output; character escape -sequences, which are converted and copied to the standard output; and -format specifications, each of which causes printing of the next successive -argument. - -In addition to the standard format specifications described in printf(1), -printf interprets: - - %b expand backslash escape sequences in the corresponding argument - %q quote the argument in a way that can be reused as shell input - %(fmt)T output the date-time string resulting from using FMT as a format - string for strftime(3) - -Exit Status: -Returns success unless an invalid option is given or a write or assignment -error occurs. -$END - -#include - -#include "../bashtypes.h" - -#include -#if defined (HAVE_LIMITS_H) -# include -#else - /* Assume 32-bit ints. */ -# define INT_MAX 2147483647 -# define INT_MIN (-2147483647-1) -#endif - -#if defined (PREFER_STDARG) -# include -#else -# include -#endif - -#include -#include - -#ifdef HAVE_INTTYPES_H -# include -#endif - -#include "posixtime.h" -#include "../bashansi.h" -#include "../bashintl.h" - -#define NEED_STRFTIME_DECL - -#include "../shell.h" -#include "shmbutil.h" -#include "stdc.h" -#include "bashgetopt.h" -#include "common.h" - -#if defined (PRI_MACROS_BROKEN) -# undef PRIdMAX -#endif - -#if !defined (PRIdMAX) -# if HAVE_LONG_LONG -# define PRIdMAX "lld" -# else -# define PRIdMAX "ld" -# endif -#endif - -#if !defined (errno) -extern int errno; -#endif - -#define PC(c) \ - do { \ - char b[2]; \ - tw++; \ - b[0] = c; b[1] = '\0'; \ - if (vflag) \ - vbadd (b, 1); \ - else \ - putchar (c); \ - } while (0) - -#define PF(f, func) \ - do { \ - int nw; \ - clearerr (stdout); \ - if (have_fieldwidth && have_precision) \ - nw = vflag ? vbprintf (f, fieldwidth, precision, func) : printf (f, fieldwidth, precision, func); \ - else if (have_fieldwidth) \ - nw = vflag ? vbprintf (f, fieldwidth, func) : printf (f, fieldwidth, func); \ - else if (have_precision) \ - nw = vflag ? vbprintf (f, precision, func) : printf (f, precision, func); \ - else \ - nw = vflag ? vbprintf (f, func) : printf (f, func); \ - tw += nw; \ - if (ferror (stdout)) \ - { \ - sh_wrerror (); \ - clearerr (stdout); \ - return (EXECUTION_FAILURE); \ - } \ - } while (0) - -/* We free the buffer used by mklong() if it's `too big'. */ -#define PRETURN(value) \ - do \ - { \ - if (vflag) \ - { \ - bind_printf_variable (vname, vbuf, 0); \ - stupidly_hack_special_variables (vname); \ - } \ - if (conv_bufsize > 4096 ) \ - { \ - free (conv_buf); \ - conv_bufsize = 0; \ - conv_buf = 0; \ - } \ - if (vbsize > 4096) \ - { \ - free (vbuf); \ - vbsize = 0; \ - vbuf = 0; \ - } \ - else if (vbuf) \ - vbuf[0] = 0; \ - terminate_immediately--; \ - if (ferror (stdout) == 0) \ - fflush (stdout); \ - if (ferror (stdout)) \ - { \ - sh_wrerror (); \ - clearerr (stdout); \ - return (EXECUTION_FAILURE); \ - } \ - return (value); \ - } \ - while (0) - -#define SKIP1 "#'-+ 0" -#define LENMODS "hjlLtz" - -extern time_t shell_start_time; - -#if !HAVE_ASPRINTF -extern int asprintf __P((char **, const char *, ...)) __attribute__((__format__ (printf, 2, 3))); -#endif - -#if !HAVE_VSNPRINTF -extern int vsnprintf __P((char *, size_t, const char *, va_list)) __attribute__((__format__ (printf, 3, 0))); -#endif - -static void printf_erange __P((char *)); -static int printstr __P((char *, char *, int, int, int)); -static int tescape __P((char *, char *, int *, int *)); -static char *bexpand __P((char *, int, int *, int *)); -static char *vbadd __P((char *, int)); -static int vbprintf __P((const char *, ...)) __attribute__((__format__ (printf, 1, 2))); -static char *mklong __P((char *, char *, size_t)); -static int getchr __P((void)); -static char *getstr __P((void)); -static int getint __P((void)); -static intmax_t getintmax __P((void)); -static uintmax_t getuintmax __P((void)); -static SHELL_VAR *bind_printf_variable __P((char *, char *, int)); - -#if defined (HAVE_LONG_DOUBLE) && HAVE_DECL_STRTOLD && !defined(STRTOLD_BROKEN) -typedef long double floatmax_t; -# define FLOATMAX_CONV "L" -# define strtofltmax strtold -#else -typedef double floatmax_t; -# define FLOATMAX_CONV "" -# define strtofltmax strtod -#endif -static floatmax_t getfloatmax __P((void)); - -static intmax_t asciicode __P((void)); - -static WORD_LIST *garglist; -static int retval; -static int conversion_error; - -/* printf -v var support */ -static int vflag = 0; -static char *vbuf, *vname; -static size_t vbsize; -static int vblen; - -static intmax_t tw; - -static char *conv_buf; -static size_t conv_bufsize; - -int -printf_builtin (list) - WORD_LIST *list; -{ - int ch, fieldwidth, precision; - int have_fieldwidth, have_precision; - char convch, thisch, nextch, *format, *modstart, *fmt, *start; -#if defined (HANDLE_MULTIBYTE) - char mbch[25]; /* 25 > MB_LEN_MAX, plus can handle 4-byte UTF-8 and large Unicode characters*/ - int mbind, mblen; -#endif - - conversion_error = 0; - retval = EXECUTION_SUCCESS; - - vflag = 0; - - reset_internal_getopt (); - while ((ch = internal_getopt (list, "v:")) != -1) - { - switch (ch) - { - case 'v': - vname = list_optarg; -#if defined (ARRAY_VARS) - if (legal_identifier (vname) || valid_array_reference (vname)) -#else - if (legal_identifier (vname)) -#endif - { - vflag = 1; - if (vbsize == 0) - vbuf = xmalloc (vbsize = 16); - vblen = 0; - if (vbuf) - vbuf[0] = 0; - } - else - { - sh_invalidid (vname); - return (EX_USAGE); - } - break; - default: - builtin_usage (); - return (EX_USAGE); - } - } - list = loptend; /* skip over possible `--' */ - - if (list == 0) - { - builtin_usage (); - return (EX_USAGE); - } - - if (list->word->word == 0 || list->word->word[0] == '\0') - return (EXECUTION_SUCCESS); - - format = list->word->word; - tw = 0; - - garglist = list->next; - - /* If the format string is empty after preprocessing, return immediately. */ - if (format == 0 || *format == 0) - return (EXECUTION_SUCCESS); - - terminate_immediately++; - - /* Basic algorithm is to scan the format string for conversion - specifications -- once one is found, find out if the field - width or precision is a '*'; if it is, gather up value. Note, - format strings are reused as necessary to use up the provided - arguments, arguments of zero/null string are provided to use - up the format string. */ - do - { - tw = 0; - /* find next format specification */ - for (fmt = format; *fmt; fmt++) - { - precision = fieldwidth = 0; - have_fieldwidth = have_precision = 0; - - if (*fmt == '\\') - { - fmt++; - /* A NULL third argument to tescape means to bypass the - special processing for arguments to %b. */ -#if defined (HANDLE_MULTIBYTE) - /* Accommodate possible use of \u or \U, which can result in - multibyte characters */ - memset (mbch, '\0', sizeof (mbch)); - fmt += tescape (fmt, mbch, &mblen, (int *)NULL); - for (mbind = 0; mbind < mblen; mbind++) - PC (mbch[mbind]); -#else - fmt += tescape (fmt, &nextch, (int *)NULL, (int *)NULL); - PC (nextch); -#endif - fmt--; /* for loop will increment it for us again */ - continue; - } - - if (*fmt != '%') - { - PC (*fmt); - continue; - } - - /* ASSERT(*fmt == '%') */ - start = fmt++; - - if (*fmt == '%') /* %% prints a % */ - { - PC ('%'); - continue; - } - - /* found format specification, skip to field width */ - for (; *fmt && strchr(SKIP1, *fmt); ++fmt) - ; - - /* Skip optional field width. */ - if (*fmt == '*') - { - fmt++; - have_fieldwidth = 1; - fieldwidth = getint (); - } - else - while (DIGIT (*fmt)) - fmt++; - - /* Skip optional '.' and precision */ - if (*fmt == '.') - { - ++fmt; - if (*fmt == '*') - { - fmt++; - have_precision = 1; - precision = getint (); - } - else - { - /* Negative precisions are allowed but treated as if the - precision were missing; I would like to allow a leading - `+' in the precision number as an extension, but lots - of asprintf/fprintf implementations get this wrong. */ -#if 0 - if (*fmt == '-' || *fmt == '+') -#else - if (*fmt == '-') -#endif - fmt++; - while (DIGIT (*fmt)) - fmt++; - } - } - - /* skip possible format modifiers */ - modstart = fmt; - while (*fmt && strchr (LENMODS, *fmt)) - fmt++; - - if (*fmt == 0) - { - builtin_error (_("`%s': missing format character"), start); - PRETURN (EXECUTION_FAILURE); - } - - convch = *fmt; - thisch = modstart[0]; - nextch = modstart[1]; - modstart[0] = convch; - modstart[1] = '\0'; - - switch(convch) - { - case 'c': - { - char p; - - p = getchr (); - PF(start, p); - break; - } - - case 's': - { - char *p; - - p = getstr (); - PF(start, p); - break; - } - - case '(': - { - char *timefmt, timebuf[128], *t; - int n; - intmax_t arg; - time_t secs; - struct tm *tm; - - modstart[1] = nextch; /* restore char after left paren */ - timefmt = xmalloc (strlen (fmt) + 3); - fmt++; /* skip over left paren */ - for (t = timefmt, n = 1; *fmt; ) - { - if (*fmt == '(') - n++; - else if (*fmt == ')') - n--; - if (n == 0) - break; - *t++ = *fmt++; - } - *t = '\0'; - if (*++fmt != 'T') - { - builtin_warning (_("`%c': invalid time format specification"), *fmt); - fmt = start; - free (timefmt); - PC (*fmt); - continue; - } - if (timefmt[0] == '\0') - { - timefmt[0] = '%'; - timefmt[1] = 'X'; /* locale-specific current time - should we use `+'? */ - timefmt[2] = '\0'; - } - /* argument is seconds since the epoch with special -1 and -2 */ - arg = getintmax (); - if (arg == -1) - secs = NOW; /* roughly date +%s */ - else if (arg == -2) - secs = shell_start_time; /* roughly $SECONDS */ - else - secs = arg; -#if defined (HAVE_TZSET) - sv_tz ("TZ"); /* XXX -- just make sure */ -#endif - tm = localtime (&secs); - n = strftime (timebuf, sizeof (timebuf), timefmt, tm); - free (timefmt); - if (n == 0) - timebuf[0] = '\0'; - else - timebuf[sizeof(timebuf) - 1] = '\0'; - /* convert to %s format that preserves fieldwidth and precision */ - modstart[0] = 's'; - modstart[1] = '\0'; - n = printstr (start, timebuf, strlen (timebuf), fieldwidth, precision); /* XXX - %s for now */ - if (n < 0) - { - if (ferror (stdout) == 0) - { - sh_wrerror (); - clearerr (stdout); - } - PRETURN (EXECUTION_FAILURE); - } - break; - } - - case 'n': - { - char *var; - - var = getstr (); - if (var && *var) - { - if (legal_identifier (var)) - bind_var_to_int (var, tw); - else - { - sh_invalidid (var); - PRETURN (EXECUTION_FAILURE); - } - } - break; - } - - case 'b': /* expand escapes in argument */ - { - char *p, *xp; - int rlen, r; - - p = getstr (); - ch = rlen = r = 0; - xp = bexpand (p, strlen (p), &ch, &rlen); - - if (xp) - { - /* Have to use printstr because of possible NUL bytes - in XP -- printf does not handle that well. */ - r = printstr (start, xp, rlen, fieldwidth, precision); - if (r < 0) - { - if (ferror (stdout) == 0) - { - sh_wrerror (); - clearerr (stdout); - } - retval = EXECUTION_FAILURE; - } - free (xp); - } - - if (ch || r < 0) - PRETURN (retval); - break; - } - - case 'q': /* print with shell quoting */ - { - char *p, *xp; - int r; - - r = 0; - p = getstr (); - if (p && *p == 0) /* XXX - getstr never returns null */ - xp = savestring ("''"); - else if (ansic_shouldquote (p)) - xp = ansic_quote (p, 0, (int *)0); - else - xp = sh_backslash_quote (p, 0); - if (xp) - { - /* Use printstr to get fieldwidth and precision right. */ - r = printstr (start, xp, strlen (xp), fieldwidth, precision); - if (r < 0) - { - sh_wrerror (); - clearerr (stdout); - } - free (xp); - } - - if (r < 0) - PRETURN (EXECUTION_FAILURE); - break; - } - - case 'd': - case 'i': - { - char *f; - long p; - intmax_t pp; - - p = pp = getintmax (); - if (p != pp) - { - f = mklong (start, PRIdMAX, sizeof (PRIdMAX) - 2); - PF (f, pp); - } - else - { - /* Optimize the common case where the integer fits - in "long". This also works around some long - long and/or intmax_t library bugs in the common - case, e.g. glibc 2.2 x86. */ - f = mklong (start, "l", 1); - PF (f, p); - } - break; - } - - case 'o': - case 'u': - case 'x': - case 'X': - { - char *f; - unsigned long p; - uintmax_t pp; - - p = pp = getuintmax (); - if (p != pp) - { - f = mklong (start, PRIdMAX, sizeof (PRIdMAX) - 2); - PF (f, pp); - } - else - { - f = mklong (start, "l", 1); - PF (f, p); - } - break; - } - - case 'e': - case 'E': - case 'f': - case 'F': - case 'g': - case 'G': -#if defined (HAVE_PRINTF_A_FORMAT) - case 'a': - case 'A': -#endif - { - char *f; - floatmax_t p; - - p = getfloatmax (); - f = mklong (start, FLOATMAX_CONV, sizeof(FLOATMAX_CONV) - 1); - PF (f, p); - break; - } - - /* We don't output unrecognized format characters; we print an - error message and return a failure exit status. */ - default: - builtin_error (_("`%c': invalid format character"), convch); - PRETURN (EXECUTION_FAILURE); - } - - modstart[0] = thisch; - modstart[1] = nextch; - } - - if (ferror (stdout)) - { - /* PRETURN will print error message. */ - PRETURN (EXECUTION_FAILURE); - } - } - while (garglist && garglist != list->next); - - if (conversion_error) - retval = EXECUTION_FAILURE; - - PRETURN (retval); -} - -static void -printf_erange (s) - char *s; -{ - builtin_error (_("warning: %s: %s"), s, strerror(ERANGE)); -} - -/* We duplicate a lot of what printf(3) does here. */ -static int -printstr (fmt, string, len, fieldwidth, precision) - char *fmt; /* format */ - char *string; /* expanded string argument */ - int len; /* length of expanded string */ - int fieldwidth; /* argument for width of `*' */ - int precision; /* argument for precision of `*' */ -{ -#if 0 - char *s; -#endif - int padlen, nc, ljust, i; - int fw, pr; /* fieldwidth and precision */ - intmax_t mfw, mpr; - - if (string == 0 || len == 0) - return 0; - -#if 0 - s = fmt; -#endif - if (*fmt == '%') - fmt++; - - ljust = fw = 0; - pr = -1; - mfw = 0; - mpr = -1; - - /* skip flags */ - while (strchr (SKIP1, *fmt)) - { - if (*fmt == '-') - ljust = 1; - fmt++; - } - - /* get fieldwidth, if present. rely on caller to clamp fieldwidth at INT_MAX */ - if (*fmt == '*') - { - fmt++; - fw = fieldwidth; - if (fw < 0) - { - fw = -fw; - ljust = 1; - } - } - else if (DIGIT (*fmt)) - { - mfw = *fmt++ - '0'; - while (DIGIT (*fmt)) - mfw = (mfw * 10) + (*fmt++ - '0'); - /* Error if fieldwidth > INT_MAX here? */ - fw = (mfw < 0 || mfw > INT_MAX) ? INT_MAX : mfw; - } - - /* get precision, if present */ - if (*fmt == '.') - { - fmt++; - if (*fmt == '*') - { - fmt++; - pr = precision; - } - else if (DIGIT (*fmt)) - { - mpr = *fmt++ - '0'; - while (DIGIT (*fmt)) - mpr = (mpr * 10) + (*fmt++ - '0'); - /* Error if precision > INT_MAX here? */ - pr = (mpr < 0 || mpr > INT_MAX) ? INT_MAX : mpr; - } - } - -#if 0 - /* If we remove this, get rid of `s'. */ - if (*fmt != 'b' && *fmt != 'q') - { - internal_error ("format parsing problem: %s", s); - fw = pr = 0; - } -#endif - - /* chars from string to print */ - nc = (pr >= 0 && pr <= len) ? pr : len; - - padlen = fw - nc; - if (padlen < 0) - padlen = 0; - if (ljust) - padlen = -padlen; - - /* leading pad characters */ - for (; padlen > 0; padlen--) - PC (' '); - - /* output NC characters from STRING */ - for (i = 0; i < nc; i++) - PC (string[i]); - - /* output any necessary trailing padding */ - for (; padlen < 0; padlen++) - PC (' '); - - return (ferror (stdout) ? -1 : 0); -} - -/* Convert STRING by expanding the escape sequences specified by the - POSIX standard for printf's `%b' format string. If SAWC is non-null, - perform the processing appropriate for %b arguments. In particular, - recognize `\c' and use that as a string terminator. If we see \c, set - *SAWC to 1 before returning. LEN is the length of STRING. */ - -/* Translate a single backslash-escape sequence starting at ESTART (the - character after the backslash) and return the number of characters - consumed by the sequence. CP is the place to return the translated - value. *SAWC is set to 1 if the escape sequence was \c, since that means - to short-circuit the rest of the processing. If SAWC is null, we don't - do the \c short-circuiting, and \c is treated as an unrecognized escape - sequence; we also bypass the other processing specific to %b arguments. */ -static int -tescape (estart, cp, lenp, sawc) - char *estart; - char *cp; - int *lenp, *sawc; -{ - register char *p; - int temp, c, evalue; - unsigned long uvalue; - - p = estart; - if (lenp) - *lenp = 1; - - switch (c = *p++) - { -#if defined (__STDC__) - case 'a': *cp = '\a'; break; -#else - case 'a': *cp = '\007'; break; -#endif - - case 'b': *cp = '\b'; break; - - case 'e': - case 'E': *cp = '\033'; break; /* ESC -- non-ANSI */ - - case 'f': *cp = '\f'; break; - - case 'n': *cp = '\n'; break; - - case 'r': *cp = '\r'; break; - - case 't': *cp = '\t'; break; - - case 'v': *cp = '\v'; break; - - /* The octal escape sequences are `\0' followed by up to three octal - digits (if SAWC), or `\' followed by up to three octal digits (if - !SAWC). As an extension, we allow the latter form even if SAWC. */ - case '0': case '1': case '2': case '3': - case '4': case '5': case '6': case '7': - evalue = OCTVALUE (c); - for (temp = 2 + (!evalue && !!sawc); ISOCTAL (*p) && temp--; p++) - evalue = (evalue * 8) + OCTVALUE (*p); - *cp = evalue & 0xFF; - break; - - /* And, as another extension, we allow \xNN, where each N is a - hex digit. */ - case 'x': - for (temp = 2, evalue = 0; ISXDIGIT ((unsigned char)*p) && temp--; p++) - evalue = (evalue * 16) + HEXVALUE (*p); - if (p == estart + 1) - { - builtin_error (_("missing hex digit for \\x")); - *cp = '\\'; - return 0; - } - *cp = evalue & 0xFF; - break; - -#if defined (HANDLE_MULTIBYTE) - case 'u': - case 'U': - temp = (c == 'u') ? 4 : 8; /* \uNNNN \UNNNNNNNN */ - for (uvalue = 0; ISXDIGIT ((unsigned char)*p) && temp--; p++) - uvalue = (uvalue * 16) + HEXVALUE (*p); - if (p == estart + 1) - { - builtin_error (_("missing unicode digit for \\%c"), c); - *cp = '\\'; - return 0; - } - if (uvalue <= UCHAR_MAX) - *cp = uvalue; - else - { - temp = u32cconv (uvalue, cp); - cp[temp] = '\0'; - if (lenp) - *lenp = temp; - } - break; -#endif - - case '\\': /* \\ -> \ */ - *cp = c; - break; - - /* SAWC == 0 means that \', \", and \? are recognized as escape - sequences, though the only processing performed is backslash - removal. */ - case '\'': case '"': case '?': - if (!sawc) - *cp = c; - else - { - *cp = '\\'; - return 0; - } - break; - - case 'c': - if (sawc) - { - *sawc = 1; - break; - } - /* other backslash escapes are passed through unaltered */ - default: - *cp = '\\'; - return 0; - } - return (p - estart); -} - -static char * -bexpand (string, len, sawc, lenp) - char *string; - int len, *sawc, *lenp; -{ - int temp; - char *ret, *r, *s, c; -#if defined (HANDLE_MULTIBYTE) - char mbch[25]; - int mbind, mblen; -#endif - - if (string == 0 || len == 0) - { - if (sawc) - *sawc = 0; - if (lenp) - *lenp = 0; - return ((char *)NULL); - } - - ret = (char *)xmalloc (len + 1); - for (r = ret, s = string; s && *s; ) - { - c = *s++; - if (c != '\\' || *s == '\0') - { - *r++ = c; - continue; - } - temp = 0; -#if defined (HANDLE_MULTIBYTE) - memset (mbch, '\0', sizeof (mbch)); - s += tescape (s, mbch, &mblen, &temp); -#else - s += tescape (s, &c, (int *)NULL, &temp); -#endif - if (temp) - { - if (sawc) - *sawc = 1; - break; - } - -#if defined (HANDLE_MULTIBYTE) - for (mbind = 0; mbind < mblen; mbind++) - *r++ = mbch[mbind]; -#else - *r++ = c; -#endif - } - - *r = '\0'; - if (lenp) - *lenp = r - ret; - return ret; -} - -static char * -vbadd (buf, blen) - char *buf; - int blen; -{ - size_t nlen; - - nlen = vblen + blen + 1; - if (nlen >= vbsize) - { - vbsize = ((nlen + 63) >> 6) << 6; - vbuf = (char *)xrealloc (vbuf, vbsize); - } - - if (blen == 1) - vbuf[vblen++] = buf[0]; - else if (blen > 1) - { - FASTCOPY (buf, vbuf + vblen, blen); - vblen += blen; - } - vbuf[vblen] = '\0'; - -#ifdef DEBUG - if (strlen (vbuf) != vblen) - internal_error ("printf:vbadd: vblen (%d) != strlen (vbuf) (%d)", vblen, (int)strlen (vbuf)); -#endif - - return vbuf; -} - -static int -#if defined (PREFER_STDARG) -vbprintf (const char *format, ...) -#else -vbprintf (format, va_alist) - const char *format; - va_dcl -#endif -{ - va_list args; - size_t nlen; - int blen; - - SH_VA_START (args, format); - blen = vsnprintf (vbuf + vblen, vbsize - vblen, format, args); - va_end (args); - - nlen = vblen + blen + 1; - if (nlen >= vbsize) - { - vbsize = ((nlen + 63) >> 6) << 6; - vbuf = (char *)xrealloc (vbuf, vbsize); - SH_VA_START (args, format); - blen = vsnprintf (vbuf + vblen, vbsize - vblen, format, args); - va_end (args); - } - - vblen += blen; - vbuf[vblen] = '\0'; - -#ifdef DEBUG - if (strlen (vbuf) != vblen) - internal_error ("printf:vbadd: vblen (%d) != strlen (vbuf) (%d)", vblen, (int)strlen (vbuf)); -#endif - - return (blen); -} - -static char * -mklong (str, modifiers, mlen) - char *str; - char *modifiers; - size_t mlen; -{ - size_t len, slen; - - slen = strlen (str); - len = slen + mlen + 1; - - if (len > conv_bufsize) - { - conv_bufsize = (((len + 1023) >> 10) << 10); - conv_buf = (char *)xrealloc (conv_buf, conv_bufsize); - } - - FASTCOPY (str, conv_buf, slen - 1); - FASTCOPY (modifiers, conv_buf + slen - 1, mlen); - - conv_buf[len - 2] = str[slen - 1]; - conv_buf[len - 1] = '\0'; - return (conv_buf); -} - -static int -getchr () -{ - int ret; - - if (garglist == 0) - return ('\0'); - - ret = (int)garglist->word->word[0]; - garglist = garglist->next; - return ret; -} - -static char * -getstr () -{ - char *ret; - - if (garglist == 0) - return (""); - - ret = garglist->word->word; - garglist = garglist->next; - return ret; -} - -static int -getint () -{ - intmax_t ret; - - ret = getintmax (); - - if (garglist == 0) - return ret; - - if (ret > INT_MAX) - { - printf_erange (garglist->word->word); - ret = INT_MAX; - } - else if (ret < INT_MIN) - { - printf_erange (garglist->word->word); - ret = INT_MIN; - } - - return ((int)ret); -} - -static intmax_t -getintmax () -{ - intmax_t ret; - char *ep; - - if (garglist == 0) - return (0); - - if (garglist->word->word[0] == '\'' || garglist->word->word[0] == '"') - return asciicode (); - - errno = 0; - ret = strtoimax (garglist->word->word, &ep, 0); - - if (*ep) - { - sh_invalidnum (garglist->word->word); - /* POSIX.2 says ``...a diagnostic message shall be written to standard - error, and the utility shall not exit with a zero exit status, but - shall continue processing any remaining operands and shall write the - value accumulated at the time the error was detected to standard - output.'' Yecch. */ -#if 0 - ret = 0; /* return partially-converted value from strtoimax */ -#endif - conversion_error = 1; - } - else if (errno == ERANGE) - printf_erange (garglist->word->word); - - garglist = garglist->next; - return (ret); -} - -static uintmax_t -getuintmax () -{ - uintmax_t ret; - char *ep; - - if (garglist == 0) - return (0); - - if (garglist->word->word[0] == '\'' || garglist->word->word[0] == '"') - return asciicode (); - - errno = 0; - ret = strtoumax (garglist->word->word, &ep, 0); - - if (*ep) - { - sh_invalidnum (garglist->word->word); - /* Same POSIX.2 conversion error requirements as getintmax(). */ - ret = 0; - conversion_error = 1; - } - else if (errno == ERANGE) - printf_erange (garglist->word->word); - - garglist = garglist->next; - return (ret); -} - -static floatmax_t -getfloatmax () -{ - floatmax_t ret; - char *ep; - - if (garglist == 0) - return (0); - - if (garglist->word->word[0] == '\'' || garglist->word->word[0] == '"') - return asciicode (); - - errno = 0; - ret = strtofltmax (garglist->word->word, &ep); - - if (*ep) - { - sh_invalidnum (garglist->word->word); - /* Same thing about POSIX.2 conversion error requirements. */ - ret = 0; - conversion_error = 1; - } - else if (errno == ERANGE) - printf_erange (garglist->word->word); - - garglist = garglist->next; - return (ret); -} - -/* NO check is needed for garglist here. */ -static intmax_t -asciicode () -{ - register intmax_t ch; -#if defined (HANDLE_MULTIBYTE) - wchar_t wc; - size_t mblength, slen; -#endif - DECLARE_MBSTATE; - -#if defined (HANDLE_MULTIBYTE) - slen = strlen (garglist->word->word+1); - mblength = MBLEN (garglist->word->word+1, slen); - if (mblength > 1) - { - mblength = mbtowc (&wc, garglist->word->word+1, slen); - ch = wc; /* XXX */ - } - else -#endif - ch = (unsigned char)garglist->word->word[1]; - - garglist = garglist->next; - return (ch); -} - -static SHELL_VAR * -bind_printf_variable (name, value, flags) - char *name; - char *value; - int flags; -{ -#if defined (ARRAY_VARS) - if (valid_array_reference (name) == 0) - return (bind_variable (name, value, flags)); - else - return (assign_array_element (name, value, flags)); -#else /* !ARRAY_VARS */ - return bind_variable (name, value, flags); -#endif /* !ARRAY_VARS */ -} diff --git a/configure.in~ b/configure.in~ deleted file mode 100644 index 1ea30f572..000000000 --- a/configure.in~ +++ /dev/null @@ -1,1177 +0,0 @@ -dnl -dnl Configure script for bash-4.2 -dnl -dnl report bugs to chet@po.cwru.edu -dnl -dnl Process this file with autoconf to produce a configure script. - -# Copyright (C) 1987-2012 Free Software Foundation, Inc. - -# -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see . - -AC_REVISION([for Bash 4.2, version 4.045])dnl - -define(bashvers, 4.2) -define(relstatus, maint) - -AC_INIT([bash], bashvers-relstatus, [bug-bash@gnu.org]) - -dnl make sure we are using a recent autoconf version -AC_PREREQ(2.50) - -AC_CONFIG_SRCDIR(shell.h) -dnl where to find install.sh, config.sub, and config.guess -AC_CONFIG_AUX_DIR(./support) -AC_CONFIG_HEADERS(config.h) - -dnl checks for version info -BASHVERS=bashvers -RELSTATUS=relstatus - -dnl defaults for debug settings -case "$RELSTATUS" in -alp*|bet*|dev*|rc*|maint*) DEBUG='-DDEBUG' MALLOC_DEBUG='-DMALLOC_DEBUG' ;; -*) DEBUG= MALLOC_DEBUG= ;; -esac - -dnl canonicalize the host and os so we can do some tricky things before -dnl parsing options -AC_CANONICAL_HOST - -dnl configure defaults -opt_bash_malloc=yes -opt_purify=no -opt_purecov=no -opt_afs=no -opt_curses=no -opt_with_installed_readline=no - -#htmldir= - -dnl some systems should be configured without the bash malloc by default -dnl and some need a special compiler or loader -dnl look in the NOTES file for more -case "${host_cpu}-${host_os}" in -alpha*-*) opt_bash_malloc=no ;; # alpha running osf/1 or linux -*[[Cc]]ray*-*) opt_bash_malloc=no ;; # Crays -*-osf1*) opt_bash_malloc=no ;; # other osf/1 machines -sparc-svr4*) opt_bash_malloc=no ;; # sparc SVR4, SVR4.2 -sparc-netbsd*) opt_bash_malloc=no ;; # needs 8-byte alignment -mips-irix6*) opt_bash_malloc=no ;; # needs 8-byte alignment -m68k-sysv) opt_bash_malloc=no ;; # fixes file descriptor leak in closedir -sparc-linux*) opt_bash_malloc=no ;; # sparc running linux; requires ELF -#*-freebsd*-gnu) opt_bash_malloc=no ;; # there's some undetermined problem here -#*-freebsd*) opt_bash_malloc=no ;; # they claim it's better; I disagree -*-openbsd*) opt_bash_malloc=no ;; # they claim it needs eight-bit alignment -*-aix*) opt_bash_malloc=no ;; # AIX machines -*-nextstep*) opt_bash_malloc=no ;; # NeXT machines running NeXTstep -*-macos*) opt_bash_malloc=no ;; # Apple MacOS X -*-rhapsody*) opt_bash_malloc=no ;; # Apple Rhapsody (MacOS X) -*-darwin*) opt_bash_malloc=no ;; # Apple Darwin (MacOS X) -*-dgux*) opt_bash_malloc=no ;; # DG/UX machines -*-qnx*) opt_bash_malloc=no ;; # QNX 4.2, QNX 6.x -*-machten4) opt_bash_malloc=no ;; # MachTen 4.x -*-bsdi2.1|*-bsdi3.?) opt_bash_malloc=no ; : ${CC:=shlicc2} ;; # for loadable builtins -*-beos*) opt_bash_malloc=no ;; # they say it's suitable -*-cygwin*) opt_bash_malloc=no ;; # Cygnus's CYGWIN environment -*-opennt*|*-interix*) opt_bash_malloc=no ;; # Interix, now owned by Microsoft -esac - -# memory scrambling on free() -case "${host_os}" in -sco3.2v5*|sco3.2v4*) opt_memscramble=no ;; -*) opt_memscramble=yes ;; -esac - -dnl -dnl macros for the bash debugger -dnl -dnl AM_PATH_LISPDIR -AC_ARG_VAR(DEBUGGER_START_FILE, [location of bash debugger initialization file]) - -dnl arguments to configure -dnl packages -AC_ARG_WITH(afs, AC_HELP_STRING([--with-afs], [if you are running AFS]), opt_afs=$withval) -AC_ARG_WITH(bash-malloc, AC_HELP_STRING([--with-bash-malloc], [use the Bash version of malloc]), opt_bash_malloc=$withval) -AC_ARG_WITH(curses, AC_HELP_STRING([--with-curses], [use the curses library instead of the termcap library]), opt_curses=$withval) -AC_ARG_WITH(gnu-malloc, AC_HELP_STRING([--with-gnu-malloc], [synonym for --with-bash-malloc]), opt_bash_malloc=$withval) -AC_ARG_WITH(installed-readline, AC_HELP_STRING([--with-installed-readline], [use a version of the readline library that is already installed]), opt_with_installed_readline=$withval) -AC_ARG_WITH(purecov, AC_HELP_STRING([--with-purecov], [configure to postprocess with pure coverage]), opt_purecov=$withval) -AC_ARG_WITH(purify, AC_HELP_STRING([--with-purify], [configure to postprocess with purify]), opt_purify=$withval) - -if test "$opt_bash_malloc" = yes; then - MALLOC_TARGET=malloc - MALLOC_SRC=malloc.c - - MALLOC_LIB='-lmalloc' - MALLOC_LIBRARY='$(ALLOC_LIBDIR)/libmalloc.a' - MALLOC_LDFLAGS='-L$(ALLOC_LIBDIR)' - MALLOC_DEP='$(MALLOC_LIBRARY)' - - AC_DEFINE(USING_BASH_MALLOC) -else - MALLOC_LIB= - MALLOC_LIBRARY= - MALLOC_LDFLAGS= - MALLOC_DEP= -fi - -if test "$opt_purify" = yes; then - PURIFY="purify " - AC_DEFINE(DISABLE_MALLOC_WRAPPERS) -else - PURIFY= -fi - -if test "$opt_purecov" = yes; then - PURIFY="${PURIFY}purecov" -fi - -if test "$opt_afs" = yes; then - AC_DEFINE(AFS) -fi - -if test "$opt_curses" = yes; then - prefer_curses=yes -fi - -if test -z "${DEBUGGER_START_FILE}"; then - DEBUGGER_START_FILE='${datadir}/bashdb/bashdb-main.inc' -fi - -dnl optional shell features in config.h.in -opt_minimal_config=no - -opt_job_control=yes -opt_alias=yes -opt_readline=yes -opt_history=yes -opt_bang_history=yes -opt_dirstack=yes -opt_restricted=yes -opt_process_subst=yes -opt_prompt_decoding=yes -opt_select=yes -opt_help=yes -opt_array_variables=yes -opt_dparen_arith=yes -opt_extended_glob=yes -opt_brace_expansion=yes -opt_disabled_builtins=no -opt_command_timing=yes -opt_xpg_echo=no -opt_strict_posix=no -opt_cond_command=yes -opt_cond_regexp=yes -opt_coproc=yes -opt_arith_for_command=yes -opt_net_redirs=yes -opt_progcomp=yes -opt_separate_help=no -opt_multibyte=yes -opt_debugger=yes -opt_single_longdoc_strings=yes -opt_casemod_attrs=yes -opt_casemod_expansions=yes -opt_extglob_default=no - -dnl options that affect how bash is compiled and linked -opt_static_link=no -opt_profiling=no - -dnl argument parsing for optional features -AC_ARG_ENABLE(minimal-config, AC_HELP_STRING([--enable-minimal-config], [a minimal sh-like configuration]), opt_minimal_config=$enableval) - -dnl a minimal configuration turns everything off, but features can be -dnl added individually -if test $opt_minimal_config = yes; then - opt_job_control=no opt_alias=no opt_readline=no - opt_history=no opt_bang_history=no opt_dirstack=no - opt_restricted=no opt_process_subst=no opt_prompt_decoding=no - opt_select=no opt_help=no opt_array_variables=no opt_dparen_arith=no - opt_brace_expansion=no opt_disabled_builtins=no opt_command_timing=no - opt_extended_glob=no opt_cond_command=no opt_arith_for_command=no - opt_net_redirs=no opt_progcomp=no opt_separate_help=no - opt_multibyte=yes opt_cond_regexp=no opt_coproc=no - opt_casemod_attrs=no opt_casemod_expansions=no opt_extglob_default=no -fi - -AC_ARG_ENABLE(alias, AC_HELP_STRING([--enable-alias], [enable shell aliases]), opt_alias=$enableval) -AC_ARG_ENABLE(arith-for-command, AC_HELP_STRING([--enable-arith-for-command], [enable arithmetic for command]), opt_arith_for_command=$enableval) -AC_ARG_ENABLE(array-variables, AC_HELP_STRING([--enable-array-variables], [include shell array variables]), opt_array_variables=$enableval) -AC_ARG_ENABLE(bang-history, AC_HELP_STRING([--enable-bang-history], [turn on csh-style history substitution]), opt_bang_history=$enableval) -AC_ARG_ENABLE(brace-expansion, AC_HELP_STRING([--enable-brace-expansion], [include brace expansion]), opt_brace_expansion=$enableval) -AC_ARG_ENABLE(casemod-attributes, AC_HELP_STRING([--enable-casemod-attributes], [include case-modifying variable attributes]), opt_casemod_attrs=$enableval) -AC_ARG_ENABLE(casemod-expansions, AC_HELP_STRING([--enable-casemod-expansions], [include case-modifying word expansions]), opt_casemod_expansions=$enableval) -AC_ARG_ENABLE(command-timing, AC_HELP_STRING([--enable-command-timing], [enable the time reserved word and command timing]), opt_command_timing=$enableval) -AC_ARG_ENABLE(cond-command, AC_HELP_STRING([--enable-cond-command], [enable the conditional command]), opt_cond_command=$enableval) -AC_ARG_ENABLE(cond-regexp, AC_HELP_STRING([--enable-cond-regexp], [enable extended regular expression matching in conditional commands]), opt_cond_regexp=$enableval) -AC_ARG_ENABLE(coprocesses, AC_HELP_STRING([--enable-coprocesses], [enable coprocess support and the coproc reserved word]), opt_coproc=$enableval) -AC_ARG_ENABLE(debugger, AC_HELP_STRING([--enable-debugger], [enable support for bash debugger]), opt_debugger=$enableval) -AC_ARG_ENABLE(directory-stack, AC_HELP_STRING([--enable-directory-stack], [enable builtins pushd/popd/dirs]), opt_dirstack=$enableval) -AC_ARG_ENABLE(disabled-builtins, AC_HELP_STRING([--enable-disabled-builtins], [allow disabled builtins to still be invoked]), opt_disabled_builtins=$enableval) -AC_ARG_ENABLE(dparen-arithmetic, AC_HELP_STRING([--enable-dparen-arithmetic], [include ((...)) command]), opt_dparen_arith=$enableval) -AC_ARG_ENABLE(extended-glob, AC_HELP_STRING([--enable-extended-glob], [include ksh-style extended pattern matching]), opt_extended_glob=$enableval) -AC_ARG_ENABLE(extended-glob-default, AC_HELP_STRING([--enable-extended-glob-default], [force extended pattern matching to be enabled by default]), opt_extglob_default=$enableval) -AC_ARG_ENABLE(help-builtin, AC_HELP_STRING([--enable-help-builtin], [include the help builtin]), opt_help=$enableval) -AC_ARG_ENABLE(history, AC_HELP_STRING([--enable-history], [turn on command history]), opt_history=$enableval) -AC_ARG_ENABLE(job-control, AC_HELP_STRING([--enable-job-control], [enable job control features]), opt_job_control=$enableval) -AC_ARG_ENABLE(multibyte, AC_HELP_STRING([--enable-multibyte], [enable multibyte characters if OS supports them]), opt_multibyte=$enableval) -AC_ARG_ENABLE(net-redirections, AC_HELP_STRING([--enable-net-redirections], [enable /dev/tcp/host/port redirection]), opt_net_redirs=$enableval) -AC_ARG_ENABLE(process-substitution, AC_HELP_STRING([--enable-process-substitution], [enable process substitution]), opt_process_subst=$enableval) -AC_ARG_ENABLE(progcomp, AC_HELP_STRING([--enable-progcomp], [enable programmable completion and the complete builtin]), opt_progcomp=$enableval) -AC_ARG_ENABLE(prompt-string-decoding, AC_HELP_STRING([--enable-prompt-string-decoding], [turn on escape character decoding in prompts]), opt_prompt_decoding=$enableval) -AC_ARG_ENABLE(readline, AC_HELP_STRING([--enable-readline], [turn on command line editing]), opt_readline=$enableval) -AC_ARG_ENABLE(restricted, AC_HELP_STRING([--enable-restricted], [enable a restricted shell]), opt_restricted=$enableval) -AC_ARG_ENABLE(select, AC_HELP_STRING([--enable-select], [include select command]), opt_select=$enableval) -AC_ARG_ENABLE(separate-helpfiles, AC_HELP_STRING([--enable-separate-helpfiles], [use external files for help builtin documentation]), opt_separate_help=$enableval) -AC_ARG_ENABLE(single-help-strings, AC_HELP_STRING([--enable-single-help-strings], [store help documentation as a single string to ease translation]), opt_single_longdoc_strings=$enableval) -AC_ARG_ENABLE(strict-posix-default, AC_HELP_STRING([--enable-strict-posix-default], [configure bash to be posix-conformant by default]), opt_strict_posix=$enableval) -AC_ARG_ENABLE(usg-echo-default, AC_HELP_STRING([--enable-usg-echo-default], [a synonym for --enable-xpg-echo-default]), opt_xpg_echo=$enableval) -AC_ARG_ENABLE(xpg-echo-default, AC_HELP_STRING([--enable-xpg-echo-default], [make the echo builtin expand escape sequences by default]), opt_xpg_echo=$enableval) - -dnl options that alter how bash is compiled and linked -AC_ARG_ENABLE(mem-scramble, AC_HELP_STRING([--enable-mem-scramble], [scramble memory on calls to malloc and free]), opt_memscramble=$enableval) -AC_ARG_ENABLE(profiling, AC_HELP_STRING([--enable-profiling], [allow profiling with gprof]), opt_profiling=$enableval) -AC_ARG_ENABLE(static-link, AC_HELP_STRING([--enable-static-link], [link bash statically, for use as a root shell]), opt_static_link=$enableval) - -dnl So-called `precious' variables -AC_ARG_VAR([CC_FOR_BUILD], [C compiler used when compiling binaries used only at build time]) -AC_ARG_VAR([CFLAGS_FOR_BUILD], [Compliation options (CFLAGS) used when compiling binaries used only at build time]) -AC_ARG_VAR([LDFLAGS_FOR_BUILD], [Linker options (LDFLAGS) used when compiling binaries used only at build time]) -AC_ARG_VAR([CPPFLAGS_FOR_BUILD], [C 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"`/usr/bin/objformat`" = "elf" ; then - LOCAL_LDFLAGS=-rdynamic # allow dynamic loading - fi ;; -freebsdelf*) LOCAL_LDFLAGS=-rdynamic ;; # allow dynamic loading -dragonfly*) LOCAL_LDFLAGS=-rdynamic ;; # allow dynamic loading -esac - -case "$host_cpu" in -*cray*) LOCAL_CFLAGS="-DCRAY" ;; # shell var so config.h can use it -esac - -case "$host_cpu-$host_os" in -ibmrt-*bsd4*) LOCAL_CFLAGS="-ma -U__STDC__" ;; -esac - -case "$host_cpu-$host_vendor-$host_os" in -m88k-motorola-sysv3) LOCAL_CFLAGS=-DWAITPID_BROKEN ;; -mips-pyramid-sysv4) LOCAL_CFLAGS=-Xa ;; -esac - -# -# Shared object configuration section. These values are generated by -# ${srcdir}/support/shobj-conf -# -if test "$ac_cv_func_dlopen" = "yes" && test -f ${srcdir}/support/shobj-conf -then - AC_MSG_CHECKING(shared object configuration for loadable builtins) - eval `${CONFIG_SHELL-/bin/sh} ${srcdir}/support/shobj-conf -C "${CC}" -c "${host_cpu}" -o "${host_os}" -v "${host_vendor}"` - AC_SUBST(SHOBJ_CC) - AC_SUBST(SHOBJ_CFLAGS) - AC_SUBST(SHOBJ_LD) - AC_SUBST(SHOBJ_LDFLAGS) - AC_SUBST(SHOBJ_XLDFLAGS) - AC_SUBST(SHOBJ_LIBS) - AC_SUBST(SHOBJ_STATUS) - AC_MSG_RESULT($SHOBJ_STATUS) -fi - -# try to create a directory tree if the source is elsewhere -# this should be packaged into a script accessible via ${srcdir}/support -case "$srcdir" in -.) ;; -*) for d in doc tests support lib examples; do # dirs - test -d $d || mkdir $d - done - for ld in readline glob tilde malloc sh termcap; do # libdirs - test -d lib/$ld || mkdir lib/$ld - done - test -d examples/loadables || mkdir examples/loadables # loadable builtins - test -d examples/loadables/perl || mkdir examples/loadables/perl - ;; -esac - -BUILD_DIR=`pwd` -case "$BUILD_DIR" in -*\ *) BUILD_DIR=`echo "$BUILD_DIR" | sed 's: :\\\\ :g'` ;; -*) ;; -esac - -if test -z "$localedir"; then - localedir='${datarootdir}/locale' -fi -if test -z "$datarootdir"; then - datarootdir='${prefix}/share' -fi - -AC_SUBST(PROFILE_FLAGS) - -AC_SUBST(incdir) -AC_SUBST(BUILD_DIR) - -# Some versions of autoconf don't substitute these automatically -AC_SUBST(datarootdir) -AC_SUBST(localedir) - -AC_SUBST(YACC) -AC_SUBST(AR) -AC_SUBST(ARFLAGS) - -AC_SUBST(BASHVERS) -AC_SUBST(RELSTATUS) -AC_SUBST(DEBUG) -AC_SUBST(MALLOC_DEBUG) - -AC_SUBST(host_cpu) -AC_SUBST(host_vendor) -AC_SUBST(host_os) - -AC_SUBST(LOCAL_LIBS) -AC_SUBST(LOCAL_CFLAGS) -AC_SUBST(LOCAL_LDFLAGS) -AC_SUBST(LOCAL_DEFS) - -#AC_SUBST(ALLOCA_SOURCE) -#AC_SUBST(ALLOCA_OBJECT) - -AC_OUTPUT([Makefile builtins/Makefile lib/readline/Makefile lib/glob/Makefile \ - lib/intl/Makefile \ - lib/malloc/Makefile lib/sh/Makefile lib/termcap/Makefile \ - lib/tilde/Makefile doc/Makefile support/Makefile po/Makefile.in \ - examples/loadables/Makefile examples/loadables/perl/Makefile], -[ -# Makefile uses this timestamp file to record whether config.h is up to date. -echo timestamp > stamp-h -]) diff --git a/cross-build/cygwin32.cache.old b/cross-build/cygwin32.cache.old deleted file mode 100644 index 640390fbf..000000000 --- a/cross-build/cygwin32.cache.old +++ /dev/null @@ -1,42 +0,0 @@ -# This file is a shell script that caches the results of configure -# tests for CYGWIN32 so they don't need to be done when cross-compiling. - -# AC_FUNC_GETPGRP should also define GETPGRP_VOID -ac_cv_func_getpgrp_void=${ac_cv_func_getpgrp_void='yes'} -# AC_FUNC_SETVBUF_REVERSED should not define anything else -ac_cv_func_setvbuf_reversed=${ac_cv_func_setvbuf_reversed='no'} -# on CYGWIN32, system calls do not restart -ac_cv_sys_restartable_syscalls=${ac_cv_sys_restartable_syscalls='no'} -bash_cv_sys_restartable_syscalls=${bash_cv_sys_restartable_syscalls='no'} - -# these may be necessary, but they are currently commented out -#ac_cv_c_bigendian=${ac_cv_c_bigendian='no'} -ac_cv_sizeof_char_p=${ac_cv_sizeof_char_p='4'} -ac_cv_sizeof_int=${ac_cv_sizeof_int='4'} -ac_cv_sizeof_long=${ac_cv_sizeof_long='4'} -ac_cv_sizeof_double=${ac_cv_sizeof_double='8'} - -bash_cv_dup2_broken=${bash_cv_dup2_broken='no'} -bash_cv_pgrp_pipe=${bash_cv_pgrp_pipe='no'} -bash_cv_type_rlimit=${bash_cv_type_rlimit='long'} -bash_cv_decl_under_sys_siglist=${bash_cv_decl_under_sys_siglist='no'} -bash_cv_under_sys_siglist=${bash_cv_under_sys_siglist='no'} -bash_cv_sys_siglist=${bash_cv_sys_siglist='no'} -bash_cv_opendir_not_robust=${bash_cv_opendir_not_robust='no'} -bash_cv_getenv_redef=${bash_cv_getenv_redef='yes'} -bash_cv_printf_declared=${bash_cv_printf_declared='yes'} -bash_cv_ulimit_maxfds=${bash_cv_ulimit_maxfds='no'} -bash_cv_getcwd_calls_popen=${bash_cv_getcwd_calls_popen='no'} -bash_cv_must_reinstall_sighandlers=${bash_cv_must_reinstall_sighandlers='no'} -bash_cv_job_control_missing=${bash_cv_job_control_missing='present'} -bash_cv_sys_named_pipes=${bash_cv_sys_named_pipes='missing'} -bash_cv_func_sigsetjmp=${bash_cv_func_sigsetjmp='missing'} -bash_cv_mail_dir=${bash_cv_mail_dir='unknown'} -bash_cv_func_strcoll_broken=${bash_cv_func_strcoll_broken='no'} - -bash_cv_type_int32_t=${bash_cv_type_int32_t='int'} -bash_cv_type_u_int32_t=${bash_cv_type_u_int32_t='int'} - -ac_cv_type_bits64_t=${ac_cv_type_bits64_t='no'} - -# end of cross-build/cygwin32.cache diff --git a/doc/FAQ.orig b/doc/FAQ.orig deleted file mode 100644 index 1cff3c8ef..000000000 --- a/doc/FAQ.orig +++ /dev/null @@ -1,1745 +0,0 @@ -This is the Bash FAQ, version 3.24, for Bash version 2.05b. - -This document contains a set of frequently-asked questions concerning -Bash, the GNU Bourne-Again Shell. Bash is a freely-available command -interpreter with advanced features for both interactive use and shell -programming. - -Another good source of basic information about shells is the collection -of FAQ articles periodically posted to comp.unix.shell. - -Questions and comments concerning this document should be sent to -chet@po.cwru.edu. - -This document is available for anonymous FTP with the URL - -ftp://ftp.cwru.edu/pub/bash/FAQ - -The Bash home page is http://cnswww.cns.cwru.edu/~chet/bash/bashtop.html - ----------- -Contents: - -Section A: The Basics - -A1) What is it? -A2) What's the latest version? -A3) Where can I get it? -A4) On what machines will bash run? -A5) Will bash run on operating systems other than Unix? -A6) How can I build bash with gcc? -A7) How can I make bash my login shell? -A8) I just changed my login shell to bash, and now I can't FTP into my - machine. Why not? -A9) What's the `POSIX 1003.2 standard'? -A10) What is the bash `posix mode'? - -Section B: The latest version - -B1) What's new in version 2.05b? -B2) Are there any user-visible incompatibilities between bash-2.05b and - bash-1.14.7? - -Section C: Differences from other Unix shells - -C1) How does bash differ from sh, the Bourne shell? -C2) How does bash differ from the Korn shell, version ksh88? -C3) Which new features in ksh-93 are not in bash, and which are? - -Section D: Why does bash do some things differently than other Unix shells? - -D1) Why does bash run a different version of `command' than - `which command' says it will? -D2) Why doesn't bash treat brace expansions exactly like csh? -D3) Why doesn't bash have csh variable modifiers? -D4) How can I make my csh aliases work when I convert to bash? -D5) How can I pipe standard output and standard error from one command to - another, like csh does with `|&'? -D6) Now that I've converted from ksh to bash, are there equivalents to - ksh features like autoloaded functions and the `whence' command? - -Section E: Why does bash do certain things the way it does? - -E1) Why is the bash builtin `test' slightly different from /bin/test? -E2) Why does bash sometimes say `Broken pipe'? -E3) When I have terminal escape sequences in my prompt, why does bash - wrap lines at the wrong column? -E4) If I pipe the output of a command into `read variable', why doesn't - the output show up in $variable when the read command finishes? -E5) I have a bunch of shell scripts that use backslash-escaped characters - in arguments to `echo'. Bash doesn't interpret these characters. Why - not, and how can I make it understand them? -E6) Why doesn't a while or for loop get suspended when I type ^Z? -E7) What about empty for loops in Makefiles? -E8) Why does the arithmetic evaluation code complain about `08'? -E9) Why does the pattern matching expression [A-Z]* match files beginning - with every letter except `z'? -E10) Why does `cd //' leave $PWD as `//'? -E11) If I resize my xterm while another program is running, why doesn't bash - notice the change? - -Section F: Things to watch out for on certain Unix versions - -F1) Why can't I use command line editing in my `cmdtool'? -F2) I built bash on Solaris 2. Why do globbing expansions and filename - completion chop off the first few characters of each filename? -F3) Why does bash dump core after I interrupt username completion or - `~user' tilde expansion on a machine running NIS? -F4) I'm running SVR4.2. Why is the line erased every time I type `@'? -F5) Why does bash report syntax errors when my C News scripts use a - redirection before a subshell command? -F6) Why can't I use vi-mode editing on Red Hat Linux 6.1? -F7) Why do bash-2.05a and bash-2.05b fail to compile `printf.def' on - HP/UX 11.x? - -Section G: How can I get bash to do certain common things? - -G1) How can I get bash to read and display eight-bit characters? -G2) How do I write a function `x' to replace builtin command `x', but - still invoke the command from within the function? -G3) How can I find the value of a shell variable whose name is the value - of another shell variable? -G4) How can I make the bash `time' reserved word print timing output that - looks like the output from my system's /usr/bin/time? -G5) How do I get the current directory into my prompt? -G6) How can I rename "*.foo" to "*.bar"? -G7) How can I translate a filename from uppercase to lowercase? -G8) How can I write a filename expansion (globbing) pattern that will match - all files in the current directory except "." and ".."? - -Section H: Where do I go from here? - -H1) How do I report bugs in bash, and where should I look for fixes and - advice? -H2) What kind of bash documentation is there? -H3) What's coming in future versions? -H4) What's on the bash `wish list'? -H5) When will the next release appear? - ----------- -Section A: The Basics - -A1) What is it? - -Bash is a Unix command interpreter (shell). It is an implementation of -the Posix 1003.2 shell standard, and resembles the Korn and System V -shells. - -Bash contains a number of enhancements over those shells, both -for interactive use and shell programming. Features geared -toward interactive use include command line editing, command -history, job control, aliases, and prompt expansion. Programming -features include additional variable expansions, shell -arithmetic, and a number of variables and options to control -shell behavior. - -Bash was originally written by Brian Fox of the Free Software -Foundation. The current developer and maintainer is Chet Ramey -of Case Western Reserve University. - -A2) What's the latest version? - -The latest version is 2.05b, first made available on Wednesday, 17 -July, 2002. - -A3) Where can I get it? - -Bash is the GNU project's shell, and so is available from the -master GNU archive site, ftp.gnu.org, and its mirrors. The -latest version is also available for FTP from ftp.cwru.edu. -The following URLs tell how to get version 2.05b: - -ftp://ftp.gnu.org/pub/gnu/bash/bash-2.05b.tar.gz -ftp://ftp.cwru.edu/pub/bash/bash-2.05b.tar.gz - -Formatted versions of the documentation are available with the URLs: - -ftp://ftp.gnu.org/pub/gnu/bash/bash-doc-2.05b.tar.gz -ftp://ftp.cwru.edu/pub/bash/bash-doc-2.05b.tar.gz - -A4) On what machines will bash run? - -Bash has been ported to nearly every version of UNIX. All you -should have to do to build it on a machine for which a port -exists is to type `configure' and then `make'. The build process -will attempt to discover the version of UNIX you have and tailor -itself accordingly, using a script created by GNU autoconf. - -More information appears in the file `INSTALL' in the distribution. - -The Bash web page (http://cnswww.cns.cwru.edu/~chet/bash/bashtop.html) -explains how to obtain binary versions of bash for most of the major -commercial Unix systems. - -A5) Will bash run on operating systems other than Unix? - -Configuration specifics for Unix-like systems such as QNX and -LynxOS are included in the distribution. Bash-2.05 and later -versions should compile and run on Minix 2.0 (patches were -contributed), but I don't believe anyone has built bash-2.x on -earlier Minix versions yet. - -Bash has been ported to versions of Windows implementing the Win32 -programming interface. This includes Windows 95 and Windows NT. -The port was done by Cygnus Solutions as part of their CYGWIN -project. For more information about the project, look at the URLs - -http://www.cygwin.com/ -http://sourceware.cygnus.com/cygwin - -Cygnus originally ported bash-1.14.7, and that port was part of their -early GNU-Win32 (the original name) releases. Cygnus has also done a -port of bash-2.05 to the CYGWIN environment, and it is available as -part of their current release. - -Bash-2.05b should require no local Cygnus changes to build and run under -CYGWIN. - -The Cygnus port works only on Intel machines. There is a port of bash -(I don't know which version) to the alpha/NT environment available from - -ftp://ftp.gnustep.org//pub/win32/bash-alpha-nt-1.01.tar.gz - -DJ Delorie has a port of bash-2.x which runs under MS-DOS, as part -of the DJGPP project. For more information on the project, see - -http://www.delorie.com/djgpp/ - -I have been told that the original DJGPP port was done by Daisuke Aoyama. - -Mark Elbrecht has sent me notice that bash-2.04 -is available for DJGPP V2. The files are available as: - -ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/bsh204b.zip binary -ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/bsh204d.zip documentation -ftp://ftp.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/bsh204s.zip source - -Mark has begun to work with bash-2.05, but I don't know the status. - -Ports of bash-1.12 and bash-2.0 are available for OS/2 from - -ftp://hobbes.nmsu.edu/pub/os2/util/shell/bash_112.zip -ftp://hobbes.nmsu.edu/pub/os2/util/shell/bash-2.0(253).zip - -I haven't looked at either, but the second appears to be a binary-only -distribution. Beware. - -I have received word that Bash (I'm not sure which version, but I -believe that it's at least bash-2.02.1) is the standard shell on -BeOS. - -A6) How can I build bash with gcc? - -Bash configures to use gcc by default if it is available. Read the -file INSTALL in the distribution for more information. - -A7) How can I make bash my login shell? - -Some machines let you use `chsh' to change your login shell. Other -systems use `passwd -s' or `passwd -e'. If one of these works for -you, that's all you need. Note that many systems require the full -pathname to a shell to appear in /etc/shells before you can make it -your login shell. For this, you may need the assistance of your -friendly local system administrator. - -If you cannot do this, you can still use bash as your login shell, but -you need to perform some tricks. The basic idea is to add a command -to your login shell's startup file to replace your login shell with -bash. - -For example, if your login shell is csh or tcsh, and you have installed -bash in /usr/gnu/bin/bash, add the following line to ~/.login: - - if ( -f /usr/gnu/bin/bash ) exec /usr/gnu/bin/bash --login - -(the `--login' tells bash that it is a login shell). - -It's not a good idea to put this command into ~/.cshrc, because every -csh you run without the `-f' option, even ones started to run csh scripts, -reads that file. If you must put the command in ~/.cshrc, use something -like - - if ( $?prompt ) exec /usr/gnu/bin/bash --login - -to ensure that bash is exec'd only when the csh is interactive. - -If your login shell is sh or ksh, you have to do two things. - -First, create an empty file in your home directory named `.bash_profile'. -The existence of this file will prevent the exec'd bash from trying to -read ~/.profile, and re-execing itself over and over again. ~/.bash_profile -is the first file bash tries to read initialization commands from when -it is invoked as a login shell. - -Next, add a line similar to the above to ~/.profile: - - [ -f /usr/gnu/bin/bash ] && [ -x /usr/gnu/bin/bash ] && \ - exec /usr/gnu/bin/bash --login - -This will cause login shells to replace themselves with bash running as -a login shell. Once you have this working, you can copy your initialization -code from ~/.profile to ~/.bash_profile. - -I have received word that the recipe supplied above is insufficient for -machines running CDE. CDE has a maze of twisty little startup files, all -slightly different. - -If you cannot change your login shell in the password file to bash, you -will have to (apparently) live with CDE using the shell in the password -file to run its startup scripts. If you have changed your shell to bash, -there is code in the CDE startup files (on Solaris, at least) that attempts -to do the right thing. It is, however, often broken, and may require that -you use the $BASH_ENV trick described below. - -`dtterm' claims to use $SHELL as the default program to start, so if you -can change $SHELL in the CDE startup files, you should be able to use bash -in your terminal windows. - -Setting DTSOURCEPROFILE in ~/.dtprofile will cause the `Xsession' program -to read your login shell's startup files. You may be able to use bash for -the rest of the CDE programs by setting SHELL to bash in ~/.dtprofile as -well, but I have not tried this. - -You can use the above `exec' recipe to start bash when not logging in with -CDE by testing the value of the DT variable: - - if [ -n "$DT" ]; then - [ -f /usr/gnu/bin/bash ] && exec /usr/gnu/bin/bash --login - fi - -If CDE starts its shells non-interactively during login, the login shell -startup files (~/.profile, ~/.bash_profile) will not be sourced at login. -To get around this problem, append a line similar to the following to your -~/.dtprofile: - - BASH_ENV=${HOME}/.bash_profile ; export BASH_ENV - -and add the following line to the beginning of ~/.bash_profile: - - unset BASH_ENV - -A8) I just changed my login shell to bash, and now I can't FTP into my - machine. Why not? - -You must add the full pathname to bash to the file /etc/shells. As -noted in the answer to the previous question, many systems require -this before you can make bash your login shell. - -Most versions of ftpd use this file to prohibit `special' users -such as `uucp' and `news' from using FTP. - -A9) What's the `POSIX 1003.2 standard'? - -POSIX is a name originally coined by Richard Stallman for a -family of open system standards based on UNIX. There are a -number of aspects of UNIX under consideration for -standardization, from the basic system services at the system -call and C library level to applications and tools to system -administration and management. Each area of standardization is -assigned to a working group in the 1003 series. - -The POSIX Shell and Utilities standard has been developed by IEEE -Working Group 1003.2 (POSIX.2). It concentrates on the command -interpreter interface and utility programs commonly executed from -the command line or by other programs. An initial version of the -standard has been approved and published by the IEEE, and work is -currently underway to update it. - -Bash is concerned with the aspects of the shell's behavior -defined by POSIX.2. The shell command language has of course -been standardized, including the basic flow control and program -execution constructs, I/O redirection and pipelining, argument -handling, variable expansion, and quoting. - -The `special' builtins, which must be implemented as part of the -shell to provide the desired functionality, are specified as -being part of the shell; examples of these are `eval' and -`export'. Other utilities appear in the sections of POSIX.2 not -devoted to the shell which are commonly (and in some cases must -be) implemented as builtin commands, such as `read' and `test'. -POSIX.2 also specifies aspects of the shell's interactive -behavior as part of the UPE, including job control and command -line editing. Only vi-style line editing commands have been -standardized; emacs editing commands were left out due to -objections. - -The Open Group has made an older version of its Single Unix -Specification (version 2), which is very similar to POSIX.2, -available on the web at - -http://www.opengroup.org/onlinepubs/007908799/ - -The Single Unix Specification, version 3, is available on the web at - -http://www.opengroup.org/onlinepubs/007904975/ - -A10) What is the bash `posix mode'? - -Although bash is an implementation of the POSIX.2 shell -specification, there are areas where the bash default behavior -differs from that spec. The bash `posix mode' changes the bash -behavior in these areas so that it obeys the spec more closely. - -Posix mode is entered by starting bash with the --posix or -'-o posix' option or executing `set -o posix' after bash is running. - -The specific aspects of bash which change when posix mode is -active are listed in the file POSIX in the bash distribution. -They are also listed in a section in the Bash Reference Manual -(from which that file is generated). - -Section B: The latest version - -B1) What's new in version 2.05b? - -The raison d'etre for bash-2.05b is to make a second intermediate -release containing the first of the new features to be available -in bash-3.0 and get feedback on those features before proceeding. -The major new feature is multibyte character support in both Bash -and Readline. - -Bash-2.05b contains the following new features (see the manual page for -complete descriptions and the CHANGES and NEWS files in the bash-2.05b -distribution): - -o support for multibyte characters has been added to both bash and readline - -o the DEBUG trap is now run *before* simple commands, ((...)) commands, - [[...]] conditional commands, and for ((...)) loops - -o the shell now performs arithmetic in the largest integer size the machine - supports (intmax_t) - -o there is a new \D{...} prompt expansion; passes the `...' to strftime(3) - and inserts the result into the expanded prompt - -o there is a new `here-string' redirection operator: <<< word - -o when displaying variables, function attributes and definitions are shown - separately, allowing them to be re-used as input (attempting to re-use - the old output would result in syntax errors). - -o `read' has a new `-u fd' option to read from a specified file descriptor - -o the bash debugger in examples/bashdb has been modified to work with the - new DEBUG trap semantics, the command set has been made more gdb-like, - and the changes to $LINENO make debugging functions work better - -o the expansion of $LINENO inside a shell function is only relative to the - function start if the shell is interactive -- if the shell is running a - script, $LINENO expands to the line number in the script. This is as - POSIX-2001 requires - - -A short feature history dating from Bash-2.0: - -Bash-2.05a introduced the following new features: - -o The `printf' builtin has undergone major work - -o There is a new read-only `shopt' option: login_shell, which is set by - login shells and unset otherwise - -o New `\A' prompt string escape sequence; expanding to time in 24-hour - HH:MM format - -o New `-A group/-g' option to complete and compgen; goes group name - completion - -o New [+-]O invocation option to set and unset `shopt' options at startup - -o ksh-like `ERR' trap - -o `for' loops now allow empty word lists after the `in' reserved word - -o new `hard' and `soft' arguments for the `ulimit' builtin - -o Readline can be configured to place the user at the same point on the line - when retrieving commands from the history list - -o Readline can be configured to skip `hidden' files (filenames with a leading - `.' on Unix) when performing completion - -Bash-2.05 introduced the following new features: - -o This version has once again reverted to using locales and strcoll(3) when - processing pattern matching bracket expressions, as POSIX requires. -o Added a new `--init-file' invocation argument as a synonym for `--rcfile', - per the new GNU coding standards. -o The /dev/tcp and /dev/udp redirections now accept service names as well as - port numbers. -o `complete' and `compgen' now take a `-o value' option, which controls some - of the aspects of that compspec. Valid values are: - - default - perform bash default completion if programmable - completion produces no matches - dirnames - perform directory name completion if programmable - completion produces no matches - filenames - tell readline that the compspec produces filenames, - so it can do things like append slashes to - directory names and suppress trailing spaces -o A new loadable builtin, realpath, which canonicalizes and expands symlinks - in pathname arguments. -o When `set' is called without options, it prints function defintions in a - way that allows them to be reused as input. This affects `declare' and - `declare -p' as well. This only happens when the shell is not in POSIX - mode, since POSIX.2 forbids this behavior. - -Bash-2.04 introduced the following new features: - -o Programmable word completion with the new `complete' and `compgen' builtins; - examples are provided in examples/complete/complete-examples -o `history' has a new `-d' option to delete a history entry -o `bind' has a new `-x' option to bind key sequences to shell commands -o The prompt expansion code has new `\j' and `\l' escape sequences -o The `no_empty_cmd_completion' shell option, if enabled, inhibits - command completion when TAB is typed on an empty line -o `help' has a new `-s' option to print a usage synopsis -o New arithmetic operators: var++, var--, ++var, --var, expr1,expr2 (comma) -o New ksh93-style arithmetic for command: - for ((expr1 ; expr2; expr3 )); do list; done -o `read' has new options: `-t', `-n', `-d', `-s' -o The redirection code handles several filenames specially: /dev/fd/N, - /dev/stdin, /dev/stdout, /dev/stderr -o The redirection code now recognizes /dev/tcp/HOST/PORT and - /dev/udp/HOST/PORT and tries to open a TCP or UDP socket, respectively, - to the specified port on the specified host -o The ${!prefix*} expansion has been implemented -o A new FUNCNAME variable, which expands to the name of a currently-executing - function -o The GROUPS variable is no longer readonly -o A new shopt `xpg_echo' variable, to control the behavior of echo with - respect to backslash-escape sequences at runtime -o The NON_INTERACTIVE_LOGIN_SHELLS #define has returned - -The version of Readline released with Bash-2.04, Readline-4.1, had several -new features as well: - -o Parentheses matching is always compiled into readline, and controllable - with the new `blink-matching-paren' variable -o The history-search-forward and history-search-backward functions now leave - point at the end of the line when the search string is empty, like - reverse-search-history, and forward-search-history -o A new function for applications: rl_on_new_line_with_prompt() -o New variables for applications: rl_already_prompted, and rl_gnu_readline_p - - -Bash-2.03 had very few new features, in keeping with the convention -that odd-numbered releases provide mainly bug fixes. A number of new -features were added to Readline, mostly at the request of the Cygnus -folks. - -A new shopt option, `restricted_shell', so that startup files can test - whether or not the shell was started in restricted mode -Filename generation is now performed on the words between ( and ) in - compound array assignments (this is really a bug fix) -OLDPWD is now auto-exported, as POSIX.2 requires -ENV and BASH_ENV are read-only variables in a restricted shell -Bash may now be linked against an already-installed Readline library, - as long as the Readline library is version 4 or newer -All shells begun with the `--login' option will source the login shell - startup files, even if the shell is not interactive - -There were lots of changes to the version of the Readline library released -along with Bash-2.03. For a complete list of the changes, read the file -CHANGES in the Bash-2.03 distribution. - -Bash-2.02 contained the following new features: - -a new version of malloc (based on the old GNU malloc code in previous - bash versions) that is more page-oriented, more conservative - with memory usage, does not `orphan' large blocks when they - are freed, is usable on 64-bit machines, and has allocation - checking turned on unconditionally -POSIX.2-style globbing character classes ([:alpha:], [:alnum:], etc.) -POSIX.2-style globbing equivalence classes -POSIX.2-style globbing collating symbols -the ksh [[...]] extended conditional command -the ksh egrep-style extended pattern matching operators -a new `printf' builtin -the ksh-like $(, &>, >|, <<<, [n]<&word-, [n]>&word- - prompt string special char translation and variable expansion - auto-export of variables in initial environment - command search finds functions before builtins - bash return builtin will exit a file sourced with `.' - builtins: cd -/-L/-P, exec -l/-c/-a, echo -e/-E, hash -d/-l/-p/-t. - export -n/-f/-p/name=value, pwd -L/-P, - read -e/-p/-a/-t/-n/-d/-s/-u, - readonly -a/-f/name=value, trap -l, set +o, - set -b/-m/-o option/-h/-p/-B/-C/-H/-P, - unset -f/-v, ulimit -m/-p/-u, - type -a/-p/-t/-f/-P, suspend -f, kill -n, - test -o optname/s1 == s2/s1 < s2/s1 > s2/-nt/-ot/-ef/-O/-G/-S - bash reads ~/.bashrc for interactive shells, $ENV for non-interactive - bash restricted shell mode is more extensive - bash allows functions and variables with the same name - brace expansion - tilde expansion - arithmetic expansion with $((...)) and `let' builtin - the `[[...]]' extended conditional command - process substitution - aliases and alias/unalias builtins - local variables in functions and `local' builtin - readline and command-line editing with programmable completion - command history and history/fc builtins - csh-like history expansion - other new bash builtins: bind, command, compgen, complete, builtin, - declare/typeset, dirs, enable, fc, help, - history, logout, popd, pushd, disown, shopt, - printf - exported functions - filename generation when using output redirection (command >a*) - POSIX.2-style globbing character classes - POSIX.2-style globbing equivalence classes - POSIX.2-style globbing collating symbols - egrep-like extended pattern matching operators - case-insensitive pattern matching and globbing - variable assignments preceding commands affect only that command, - even for builtins and functions - posix mode - redirection to /dev/fd/N, /dev/stdin, /dev/stdout, /dev/stderr, - /dev/tcp/host/port, /dev/udp/host/port - -Things sh has that bash does not: - uses variable SHACCT to do shell accounting - includes `stop' builtin (bash can use alias stop='kill -s STOP') - `newgrp' builtin - turns on job control if called as `jsh' - $TIMEOUT (like bash $TMOUT) - `^' is a synonym for `|' - new SVR4.2 sh builtins: mldmode, priv - -Implementation differences: - redirection to/from compound commands causes sh to create a subshell - bash does not allow unbalanced quotes; sh silently inserts them at EOF - bash does not mess with signal 11 - sh sets (euid, egid) to (uid, gid) if -p not supplied and uid < 100 - bash splits only the results of expansions on IFS, using POSIX.2 - field splitting rules; sh splits all words on IFS - sh does not allow MAILCHECK to be unset (?) - sh does not allow traps on SIGALRM or SIGCHLD - bash allows multiple option arguments when invoked (e.g. -x -v); - sh allows only a single option argument (`sh -x -v' attempts - to open a file named `-v', and, on SunOS 4.1.4, dumps core. - On Solaris 2.4 and earlier versions, sh goes into an infinite - loop.) - sh exits a script if any builtin fails; bash exits only if one of - the POSIX.2 `special' builtins fails - -C2) How does bash differ from the Korn shell, version ksh88? - -Things bash has or uses that ksh88 does not: - long invocation options - [-+]O invocation option - -l invocation option - `!' reserved word - arithmetic for command: for ((expr1 ; expr2; expr3 )); do list; done - arithmetic in largest machine-supported size (intmax_t) - posix mode and posix conformance - command hashing - tilde expansion for assignment statements that look like $PATH - process substitution with named pipes if /dev/fd is not available - the ${!param} indirect parameter expansion operator - the ${!param*} prefix expansion operator - the ${param:offset[:length]} parameter substring operator - the ${param/pat[/string]} parameter pattern substitution operator - variables: BASH, BASH_VERSION, BASH_VERSINFO, UID, EUID, SHLVL, - TIMEFORMAT, HISTCMD, HOSTTYPE, OSTYPE, MACHTYPE, - HISTFILESIZE, HISTIGNORE, HISTCONTROL, PROMPT_COMMAND, - IGNOREEOF, FIGNORE, INPUTRC, HOSTFILE, DIRSTACK, - PIPESTATUS, HOSTNAME, OPTERR, SHELLOPTS, GLOBIGNORE, - GROUPS, FUNCNAME, histchars, auto_resume - prompt expansion with backslash escapes and command substitution - redirection: &> (stdout and stderr), <<<, [n]<&word-, [n]>&word- - more extensive and extensible editing and programmable completion - builtins: bind, builtin, command, declare, dirs, echo -e/-E, enable, - exec -l/-c/-a, fc -s, export -n/-f/-p, hash, help, history, - jobs -x/-r/-s, kill -s/-n/-l, local, logout, popd, pushd, - read -e/-p/-a/-t/-n/-d/-s, readonly -a/-n/-f/-p, - set -o braceexpand/-o histexpand/-o interactive-comments/ - -o notify/-o physical/-o posix/-o hashall/-o onecmd/ - -h/-B/-C/-b/-H/-P, set +o, suspend, trap -l, type, - typeset -a/-F/-p, ulimit -u, umask -S, alias -p, shopt, - disown, printf, complete, compgen - `!' csh-style history expansion - POSIX.2-style globbing character classes - POSIX.2-style globbing equivalence classes - POSIX.2-style globbing collating symbols - egrep-like extended pattern matching operators - case-insensitive pattern matching and globbing - `**' arithmetic operator to do exponentiation - redirection to /dev/fd/N, /dev/stdin, /dev/stdout, /dev/stderr - arrays of unlimited size - TMOUT is default timeout for `read' and `select' - -Things ksh88 has or uses that bash does not: - tracked aliases (alias -t) - variables: ERRNO, FPATH, EDITOR, VISUAL - co-processes (|&, >&p, <&p) - weirdly-scoped functions - typeset +f to list all function names without definitions - text of command history kept in a file, not memory - builtins: alias -x, cd old new, fc -e -, newgrp, print, - read -p/-s/var?prompt, set -A/-o gmacs/ - -o bgnice/-o markdirs/-o nolog/-o trackall/-o viraw/-s, - typeset -H/-L/-R/-Z/-A/-ft/-fu/-fx/-l/-u/-t, whence - using environment to pass attributes of exported variables - arithmetic evaluation done on arguments to some builtins - reads .profile from $PWD when invoked as login shell - -Implementation differences: - ksh runs last command of a pipeline in parent shell context - bash has brace expansion by default (ksh88 compile-time option) - bash has fixed startup file for all interactive shells; ksh reads $ENV - bash has exported functions - bash command search finds functions before builtins - bash waits for all commands in pipeline to exit before returning status - emacs-mode editing has some slightly different key bindings - -C3) Which new features in ksh-93 are not in bash, and which are? - -New things in ksh-93 not in bash-2.05b: - associative arrays - floating point arithmetic and variables - math library functions - ${!name[sub]} name of subscript for associative array - `.' is allowed in variable names to create a hierarchical namespace - more extensive compound assignment syntax - discipline functions - `sleep' and `getconf' builtins (bash has loadable versions) - typeset -n and `nameref' variables - KEYBD trap - variables: .sh.edchar, .sh.edmode, .sh.edcol, .sh.edtext, .sh.version, - .sh.name, .sh.subscript, .sh.value, .sh.match, HISTEDIT - backreferences in pattern matching (\N) - `&' operator in pattern lists for matching - print -f (bash uses printf) - `fc' has been renamed to `hist' - `.' can execute shell functions - exit statuses between 0 and 255 - set -o pipefail - `+=' variable assignment operator - FPATH and PATH mixing - getopts -a - -I invocation option - DEBUG trap now executed before each simple command, instead of after - printf %H, %P, %T, %Z modifiers, output base for %d - lexical scoping for local variables in `ksh' functions - no scoping for local variables in `POSIX' functions - -New things in ksh-93 present in bash-2.05b: - [n]<&word- and [n]>&word- redirections (combination dup and close) - for (( expr1; expr2; expr3 )) ; do list; done - arithmetic for command - ?:, ++, --, `expr1 , expr2' arithmetic operators - expansions: ${!param}, ${param:offset[:len]}, ${param/pat[/str]}, - ${!param*} - compound array assignment - the `!' reserved word - loadable builtins -- but ksh uses `builtin' while bash uses `enable' - `command', `builtin', `disown' builtins - new $'...' and $"..." quoting - FIGNORE (but bash uses GLOBIGNORE), HISTCMD - set -o notify/-C - changes to kill builtin - read -A (bash uses read -a) - read -t/-d - trap -p - exec -c/-a - `.' restores the positional parameters when it completes - POSIX.2 `test' - umask -S - unalias -a - command and arithmetic substitution performed on PS1, PS4, and ENV - command name completion - ENV processed only for interactive shells - -Section D: Why does bash do some things differently than other Unix shells? - -D1) Why does bash run a different version of `command' than - `which command' says it will? - -On many systems, `which' is actually a csh script that assumes -you're running csh. In tcsh, `which' and its cousin `where' -are builtins. On other Unix systems, `which' is a perl script -that uses the PATH environment variable. - -The csh script version reads the csh startup files from your -home directory and uses those to determine which `command' will -be invoked. Since bash doesn't use any of those startup files, -there's a good chance that your bash environment differs from -your csh environment. The bash `type' builtin does everything -`which' does, and will report correct results for the running -shell. If you're really wedded to the name `which', try adding -the following function definition to your .bashrc: - - which() - { - builtin type "$@" - } - -If you're moving from tcsh and would like to bring `where' along -as well, use this function: - - where() - { - builtin type -a "$@" - } - -D2) Why doesn't bash treat brace expansions exactly like csh? - -The only difference between bash and csh brace expansion is that -bash requires a brace expression to contain at least one unquoted -comma if it is to be expanded. Any brace-surrounded word not -containing an unquoted comma is left unchanged by the brace -expansion code. This affords the greatest degree of sh -compatibility. - -Bash, ksh, zsh, and pd-ksh all implement brace expansion this way. - -D3) Why doesn't bash have csh variable modifiers? - -Posix has specified a more powerful, albeit somewhat more cryptic, -mechanism cribbed from ksh, and bash implements it. - -${parameter%word} - Remove smallest suffix pattern. The WORD is expanded to produce - a pattern. It then expands to the value of PARAMETER, with the - smallest portion of the suffix matched by the pattern deleted. - - x=file.c - echo ${x%.c}.o - -->file.o - -${parameter%%word} - - Remove largest suffix pattern. The WORD is expanded to produce - a pattern. It then expands to the value of PARAMETER, with the - largest portion of the suffix matched by the pattern deleted. - - x=posix/src/std - echo ${x%%/*} - -->posix - -${parameter#word} - Remove smallest prefix pattern. The WORD is expanded to produce - a pattern. It then expands to the value of PARAMETER, with the - smallest portion of the prefix matched by the pattern deleted. - - x=$HOME/src/cmd - echo ${x#$HOME} - -->/src/cmd - -${parameter##word} - Remove largest prefix pattern. The WORD is expanded to produce - a pattern. It then expands to the value of PARAMETER, with the - largest portion of the prefix matched by the pattern deleted. - - x=/one/two/three - echo ${x##*/} - -->three - - -Given - a=/a/b/c/d - b=b.xxx - - csh bash result - --- ---- ------ - $a:h ${a%/*} /a/b/c - $a:t ${a##*/} d - $b:r ${b%.*} b - $b:e ${b##*.} xxx - - -D4) How can I make my csh aliases work when I convert to bash? - -Bash uses a different syntax to support aliases than csh does. -The details can be found in the documentation. We have provided -a shell script which does most of the work of conversion for you; -this script can be found in ./examples/misc/aliasconv.sh. Here is -how you use it: - -Start csh in the normal way for you. (e.g., `csh') - -Pipe the output of `alias' through `aliasconv.sh', saving the -results into `bash_aliases': - - alias | bash aliasconv.sh >bash_aliases - -Edit `bash_aliases', carefully reading through any created -functions. You will need to change the names of some csh specific -variables to the bash equivalents. The script converts $cwd to -$PWD, $term to $TERM, $home to $HOME, $user to $USER, and $prompt -to $PS1. You may also have to add quotes to avoid unwanted -expansion. - -For example, the csh alias: - - alias cd 'cd \!*; echo $cwd' - -is converted to the bash function: - - cd () { command cd "$@"; echo $PWD ; } - -The only thing that needs to be done is to quote $PWD: - - cd () { command cd "$@"; echo "$PWD" ; } - -Merge the edited file into your ~/.bashrc. - -There is an additional, more ambitious, script in -examples/misc/cshtobash that attempts to convert your entire csh -environment to its bash equivalent. This script can be run as -simply `cshtobash' to convert your normal interactive -environment, or as `cshtobash ~/.login' to convert your login -environment. - -D5) How can I pipe standard output and standard error from one command to - another, like csh does with `|&'? - -Use - command 2>&1 | command2 - -The key is to remember that piping is performed before redirection, so -file descriptor 1 points to the pipe when it is duplicated onto file -descriptor 2. - -D6) Now that I've converted from ksh to bash, are there equivalents to - ksh features like autoloaded functions and the `whence' command? - -There are features in ksh-88 and ksh-93 that do not have direct bash -equivalents. Most, however, can be emulated with very little trouble. - -ksh-88 feature Bash equivalent --------------- --------------- -compiled-in aliases set up aliases in .bashrc; some ksh aliases are - bash builtins (hash, history, type) -coprocesses named pipe pairs (one for read, one for write) -typeset +f declare -F -cd, print, whence function substitutes in examples/functions/kshenv -autoloaded functions examples/functions/autoload is the same as typeset -fu -read var?prompt read -p prompt var - -ksh-93 feature Bash equivalent --------------- --------------- -sleep, getconf Bash has loadable versions in examples/loadables -${.sh.version} $BASH_VERSION -print -f printf -hist alias hist=fc -$HISTEDIT $FCEDIT - -Section E: How can I get bash to do certain things, and why does bash do - things the way it does? - -E1) Why is the bash builtin `test' slightly different from /bin/test? - -The specific example used here is [ ! x -o x ], which is false. - -Bash's builtin `test' implements the Posix.2 spec, which can be -summarized as follows (the wording is due to David Korn): - -Here is the set of rules for processing test arguments. - - 0 Args: False - 1 Arg: True iff argument is not null. - 2 Args: If first arg is !, True iff second argument is null. - If first argument is unary, then true if unary test is true - Otherwise error. - 3 Args: If second argument is a binary operator, do binary test of $1 $3 - If first argument is !, negate two argument test of $2 $3 - If first argument is `(' and third argument is `)', do the - one-argument test of the second argument. - Otherwise error. - 4 Args: If first argument is !, negate three argument test of $2 $3 $4. - Otherwise unspecified - 5 or more Args: unspecified. (Historical shells would use their - current algorithm). - -The operators -a and -o are considered binary operators for the purpose -of the 3 Arg case. - -As you can see, the test becomes (not (x or x)), which is false. - -E2) Why does bash sometimes say `Broken pipe'? - -If a sequence of commands appears in a pipeline, and one of the -reading commands finishes before the writer has finished, the -writer receives a SIGPIPE signal. Many other shells special-case -SIGPIPE as an exit status in the pipeline and do not report it. -For example, in: - - ps -aux | head - -`head' can finish before `ps' writes all of its output, and ps -will try to write on a pipe without a reader. In that case, bash -will print `Broken pipe' to stderr when ps is killed by a -SIGPIPE. - -You can build a version of bash that will not report SIGPIPE errors -by uncommenting the definition of DONT_REPORT_SIGPIPE in the file -config-top.h. - -E3) When I have terminal escape sequences in my prompt, why does bash - wrap lines at the wrong column? - -Readline, the line editing library that bash uses, does not know -that the terminal escape sequences do not take up space on the -screen. The redisplay code assumes, unless told otherwise, that -each character in the prompt is a `printable' character that -takes up one character position on the screen. - -You can use the bash prompt expansion facility (see the PROMPTING -section in the manual page) to tell readline that sequences of -characters in the prompt strings take up no screen space. - -Use the \[ escape to begin a sequence of non-printing characters, -and the \] escape to signal the end of such a sequence. - -E4) If I pipe the output of a command into `read variable', why doesn't - the output show up in $variable when the read command finishes? - -This has to do with the parent-child relationship between Unix -processes. It affects all commands run in pipelines, not just -simple calls to `read'. For example, piping a command's output -into a `while' loop that repeatedly calls `read' will result in -the same behavior. - -Each element of a pipeline runs in a separate process, a child of -the shell running the pipeline. A subprocess cannot affect its -parent's environment. When the `read' command sets the variable -to the input, that variable is set only in the subshell, not the -parent shell. When the subshell exits, the value of the variable -is lost. - -Many pipelines that end with `read variable' can be converted -into command substitutions, which will capture the output of -a specified command. The output can then be assigned to a -variable: - - grep ^gnu /usr/lib/news/active | wc -l | read ngroup - -can be converted into - - ngroup=$(grep ^gnu /usr/lib/news/active | wc -l) - -This does not, unfortunately, work to split the text among -multiple variables, as read does when given multiple variable -arguments. If you need to do this, you can either use the -command substitution above to read the output into a variable -and chop up the variable using the bash pattern removal -expansion operators or use some variant of the following -approach. - -Say /usr/local/bin/ipaddr is the following shell script: - -#! /bin/sh -host `hostname` | awk '/address/ {print $NF}' - -Instead of using - - /usr/local/bin/ipaddr | read A B C D - -to break the local machine's IP address into separate octets, use - - OIFS="$IFS" - IFS=. - set -- $(/usr/local/bin/ipaddr) - IFS="$OIFS" - A="$1" B="$2" C="$3" D="$4" - -Beware, however, that this will change the shell's positional -parameters. If you need them, you should save them before doing -this. - -This is the general approach -- in most cases you will not need to -set $IFS to a different value. - -Some other user-supplied alternatives include: - -read A B C D << HERE - $(IFS=.; echo $(/usr/local/bin/ipaddr)) -HERE - -and, where process substitution is available, - -read A B C D < <(IFS=.; echo $(/usr/local/bin/ipaddr)) - -E5) I have a bunch of shell scripts that use backslash-escaped characters - in arguments to `echo'. Bash doesn't interpret these characters. Why - not, and how can I make it understand them? - -This is the behavior of echo on most Unix System V machines. - -The bash builtin `echo' is modeled after the 9th Edition -Research Unix version of `echo'. It does not interpret -backslash-escaped characters in its argument strings by default; -it requires the use of the -e option to enable the -interpretation. The System V echo provides no way to disable the -special characters; the bash echo has a -E option to disable -them. - -There is a configuration option that will make bash behave like -the System V echo and interpret things like `\t' by default. Run -configure with the --enable-xpg-echo-default option to turn this -on. Be aware that this will cause some of the tests run when you -type `make tests' to fail. - -There is a shell option, `xpg_echo', settable with `shopt', that will -change the behavior of echo at runtime. Enabling this option turns -on expansion of backslash-escape sequences. - -E6) Why doesn't a while or for loop get suspended when I type ^Z? - -This is a consequence of how job control works on Unix. The only -thing that can be suspended is the process group. This is a single -command or pipeline of commands that the shell forks and executes. - -When you run a while or for loop, the only thing that the shell forks -and executes are any commands in the while loop test and commands in -the loop bodies. These, therefore, are the only things that can be -suspended when you type ^Z. - -If you want to be able to stop the entire loop, you need to put it -within parentheses, which will force the loop into a subshell that -may be stopped (and subsequently restarted) as a single unit. - -E7) What about empty for loops in Makefiles? - -It's fairly common to see constructs like this in automatically-generated -Makefiles: - -SUBDIRS = @SUBDIRS@ - - ... - -subdirs-clean: - for d in ${SUBDIRS}; do \ - ( cd $$d && ${MAKE} ${MFLAGS} clean ) \ - done - -When SUBDIRS is empty, this results in a command like this being passed to -bash: - - for d in ; do - ( cd $d && ${MAKE} ${MFLAGS} clean ) - done - -In versions of bash before bash-2.05a, this was a syntax error. If the -reserved word `in' was present, a word must follow it before the semicolon -or newline. The language in the manual page referring to the list of words -being empty referred to the list after it is expanded. These versions of -bash required that there be at least one word following the `in' when the -construct was parsed. - -The idiomatic Makefile solution is something like: - -SUBDIRS = @SUBDIRS@ - -subdirs-clean: - subdirs=$SUBDIRS ; for d in $$subdirs; do \ - ( cd $$d && ${MAKE} ${MFLAGS} clean ) \ - done - -The latest drafts of the updated POSIX standard have changed this: the -word list is no longer required. Bash versions 2.05a and later accept -the new syntax. - -E8) Why does the arithmetic evaluation code complain about `08'? - -The bash arithmetic evaluation code (used for `let', $(()), (()), and in -other places), interprets a leading `0' in numeric constants as denoting -an octal number, and a leading `0x' as denoting hexadecimal. This is -in accordance with the POSIX.2 spec, section 2.9.2.1, which states that -arithmetic constants should be handled as signed long integers as defined -by the ANSI/ISO C standard. - -The POSIX.2 interpretation committee has confirmed this: - -http://www.pasc.org/interps/unofficial/db/p1003.2/pasc-1003.2-173.html - -E9) Why does the pattern matching expression [A-Z]* match files beginning - with every letter except `z'? - -Bash-2.03, Bash-2.05 and later versions honor the current locale setting -when processing ranges within pattern matching bracket expressions ([A-Z]). -This is what POSIX.2 and SUSv3/XPG6 specify. - -The behavior of the matcher in bash-2.05 and later versions depends on the -current LC_COLLATE setting. Setting this variable to `C' or `POSIX' will -result in the traditional behavior ([A-Z] matches all uppercase ASCII -characters). Many other locales, including the en_US locale (the default -on many US versions of Linux) collate the upper and lower case letters like -this: - - AaBb...Zz - -which means that [A-Z] matches every letter except `z'. Others collate like - - aAbBcC...zZ - -which means that [A-Z] matches every letter except `a'. - -The portable way to specify upper case letters is [:upper:] instead of -A-Z; lower case may be specified as [:lower:] instead of a-z. - -Look at the manual pages for setlocale(3), strcoll(3), and, if it is -present, locale(1). If you have locale(1), you can use it to find -your current locale information even if you do not have any of the -LC_ variables set. - -My advice is to put - - export LC_COLLATE=C - -into /etc/profile and inspect any shell scripts run from cron for -constructs like [A-Z]. This will prevent things like - - rm [A-Z]* - -from removing every file in the current directory except those beginning -with `z' and still allow individual users to change the collation order. -Users may put the above command into their own profiles as well, of course. - -E10) Why does `cd //' leave $PWD as `//'? - -POSIX.2, in its description of `cd', says that *three* or more leading -slashes may be replaced with a single slash when canonicalizing the -current working directory. - -This is, I presume, for historical compatibility. Certain versions of -Unix, and early network file systems, used paths of the form -//hostname/path to access `path' on server `hostname'. - -E11) If I resize my xterm while another program is running, why doesn't bash - notice the change? - -This is another issue that deals with job control. - -The kernel maintains a notion of a current terminal process group. Members -of this process group (processes whose process group ID is equal to the -current terminal process group ID) receive terminal-generated signals like -SIGWINCH. (For more details, see the JOB CONTROL section of the bash -man page.) - -If a terminal is resized, the kernel sends SIGWINCH to each member of -the terminal's current process group (the `foreground' process group). - -When bash is running with job control enabled, each pipeline (which may be -a single command) is run in its own process group, different from bash's -process group. This foreground process group receives the SIGWINCH; bash -does not. Bash has no way of knowing that the terminal has been resized. - -There is a `checkwinsize' option, settable with the `shopt' builtin, that -will cause bash to check the window size and adjust its idea of the -terminal's dimensions each time a process stops or exits and returns control -of the terminal to bash. Enable it with `shopt -s checkwinsize'. - -Section F: Things to watch out for on certain Unix versions - -F1) Why can't I use command line editing in my `cmdtool'? - -The problem is `cmdtool' and bash fighting over the input. When -scrolling is enabled in a cmdtool window, cmdtool puts the tty in -`raw mode' to permit command-line editing using the mouse for -applications that cannot do it themselves. As a result, bash and -cmdtool each try to read keyboard input immediately, with neither -getting enough of it to be useful. - -This mode also causes cmdtool to not implement many of the -terminal functions and control sequences appearing in the -`sun-cmd' termcap entry. For a more complete explanation, see -that file examples/suncmd.termcap in the bash distribution. - -`xterm' is a better choice, and gets along with bash much more -smoothly. - -If you must use cmdtool, you can use the termcap description in -examples/suncmd.termcap. Set the TERMCAP variable to the terminal -description contained in that file, i.e. - -TERMCAP='Mu|sun-cmd:am:bs:km:pt:li#34:co#80:cl=^L:ce=\E[K:cd=\E[J:rs=\E[s:' - -Then export TERMCAP and start a new cmdtool window from that shell. -The bash command-line editing should behave better in the new -cmdtool. If this works, you can put the assignment to TERMCAP -in your bashrc file. - -F2) I built bash on Solaris 2. Why do globbing expansions and filename - completion chop off the first few characters of each filename? - -This is the consequence of building bash on SunOS 5 and linking -with the libraries in /usr/ucblib, but using the definitions -and structures from files in /usr/include. - -The actual conflict is between the dirent structure in -/usr/include/dirent.h and the struct returned by the version of -`readdir' in libucb.a (a 4.3-BSD style `struct direct'). - -Make sure you've got /usr/ccs/bin ahead of /usr/ucb in your $PATH -when configuring and building bash. This will ensure that you -use /usr/ccs/bin/cc or acc instead of /usr/ucb/cc and that you -link with libc before libucb. - -If you have installed the Sun C compiler, you may also need to -put /usr/ccs/bin and /opt/SUNWspro/bin into your $PATH before -/usr/ucb. - -F3) Why does bash dump core after I interrupt username completion or - `~user' tilde expansion on a machine running NIS? - -This is a famous and long-standing bug in the SunOS YP (sorry, NIS) -client library, which is part of libc. - -The YP library code keeps static state -- a pointer into the data -returned from the server. When YP initializes itself (setpwent), -it looks at this pointer and calls free on it if it's non-null. -So far, so good. - -If one of the YP functions is interrupted during getpwent (the -exact function is interpretwithsave()), and returns NULL, the -pointer is freed without being reset to NULL, and the function -returns. The next time getpwent is called, it sees that this -pointer is non-null, calls free, and the bash free() blows up -because it's being asked to free freed memory. - -The traditional Unix mallocs allow memory to be freed multiple -times; that's probably why this has never been fixed. You can -run configure with the `--without-gnu-malloc' option to use -the C library malloc and avoid the problem. - -F4) I'm running SVR4.2. Why is the line erased every time I type `@'? - -The `@' character is the default `line kill' character in most -versions of System V, including SVR4.2. You can change this -character to whatever you want using `stty'. For example, to -change the line kill character to control-u, type - - stty kill ^U - -where the `^' and `U' can be two separate characters. - -F5) Why does bash report syntax errors when my C News scripts use a - redirection before a subshell command? - -The actual command in question is something like - - < file ( command ) - -According to the grammar given in the POSIX.2 standard, this construct -is, in fact, a syntax error. Redirections may only precede `simple -commands'. A subshell construct such as the above is one of the shell's -`compound commands'. A redirection may only follow a compound command. - -This affects the mechanical transformation of commands that use `cat' -to pipe a file into a command (a favorite Useless-Use-Of-Cat topic on -comp.unix.shell). While most commands of the form - - cat file | command - -can be converted to `< file command', shell control structures such as -loops and subshells require `command < file'. - -The file CWRU/sh-redir-hack in the bash-2.05a distribution is an -(unofficial) patch to parse.y that will modify the grammar to -support this construct. It will not apply with `patch'; you must -modify parse.y by hand. Note that if you apply this, you must -recompile with -DREDIRECTION_HACK. This introduces a large -number of reduce/reduce conflicts into the shell grammar. - -F6) Why can't I use vi-mode editing on Red Hat Linux 6.1? - -The short answer is that Red Hat screwed up. - -The long answer is that they shipped an /etc/inputrc that only works -for emacs mode editing, and then screwed all the vi users by setting -INPUTRC to /etc/inputrc in /etc/profile. - -The short fix is to do one of the following: remove or rename -/etc/inputrc, set INPUTRC=~/.inputrc in ~/.bashrc (or .bash_profile, -but make sure you export it if you do), remove the assignment to -INPUTRC from /etc/profile, add - - set keymap emacs - -to the beginning of /etc/inputrc, or bracket the key bindings in -/etc/inputrc with these lines - - $if mode=emacs - [...] - $endif - -F7) Why do bash-2.05a and bash-2.05b fail to compile `printf.def' on - HP/UX 11.x? - -HP/UX's support for long double is imperfect at best. - -GCC will support it without problems, but the HP C library functions -like strtold(3) and printf(3) don't actually work with long doubles. -HP implemented a `long_double' type as a 4-element array of 32-bit -ints, and that is what the library functions use. The ANSI C -`long double' type is a 128-bit floating point scalar. - -The easiest fix, until HP fixes things up, is to edit the generated -config.h and #undef the HAVE_LONG_DOUBLE line. After doing that, -the compilation should complete successfully. - -Section G: How can I get bash to do certain common things? - -G1) How can I get bash to read and display eight-bit characters? - -This is a process requiring several steps. - -First, you must ensure that the `physical' data path is a full eight -bits. For xterms, for example, the `vt100' resources `eightBitInput' -and `eightBitOutput' should be set to `true'. - -Once you have set up an eight-bit path, you must tell the kernel and -tty driver to leave the eighth bit of characters alone when processing -keyboard input. Use `stty' to do this: - - stty cs8 -istrip -parenb - -For old BSD-style systems, you can use - - stty pass8 - -You may also need - - stty even odd - -Finally, you need to tell readline that you will be inputting and -displaying eight-bit characters. You use readline variables to do -this. These variables can be set in your .inputrc or using the bash -`bind' builtin. Here's an example using `bind': - - bash$ bind 'set convert-meta off' - bash$ bind 'set meta-flag on' - bash$ bind 'set output-meta on' - -The `set' commands between the single quotes may also be placed -in ~/.inputrc. - -G2) How do I write a function `x' to replace builtin command `x', but - still invoke the command from within the function? - -This is why the `command' and `builtin' builtins exist. The -`command' builtin executes the command supplied as its first -argument, skipping over any function defined with that name. The -`builtin' builtin executes the builtin command given as its first -argument directly. - -For example, to write a function to replace `cd' that writes the -hostname and current directory to an xterm title bar, use -something like the following: - - cd() - { - builtin cd "$@" && xtitle "$HOST: $PWD" - } - -This could also be written using `command' instead of `builtin'; -the version above is marginally more efficient. - -G3) How can I find the value of a shell variable whose name is the value - of another shell variable? - -Versions of Bash newer than Bash-2.0 support this directly. You can use - - ${!var} - -For example, the following sequence of commands will echo `z': - - var1=var2 - var2=z - echo ${!var1} - -For sh compatibility, use the `eval' builtin. The important -thing to remember is that `eval' expands the arguments you give -it again, so you need to quote the parts of the arguments that -you want `eval' to act on. - -For example, this expression prints the value of the last positional -parameter: - - eval echo \"\$\{$#\}\" - -The expansion of the quoted portions of this expression will be -deferred until `eval' runs, while the `$#' will be expanded -before `eval' is executed. In versions of bash later than bash-2.0, - - echo ${!#} - -does the same thing. - -This is not the same thing as ksh93 `nameref' variables, though the syntax -is similar. I may add namerefs in a future bash version. - -G4) How can I make the bash `time' reserved word print timing output that - looks like the output from my system's /usr/bin/time? - -The bash command timing code looks for a variable `TIMEFORMAT' and -uses its value as a format string to decide how to display the -timing statistics. - -The value of TIMEFORMAT is a string with `%' escapes expanded in a -fashion similar in spirit to printf(3). The manual page explains -the meanings of the escape sequences in the format string. - -If TIMEFORMAT is not set, bash acts as if the following assignment had -been performed: - - TIMEFORMAT=$'\nreal\t%3lR\nuser\t%3lU\nsys\t%3lS' - -The POSIX.2 default time format (used by `time -p command') is - - TIMEFORMAT=$'real %2R\nuser %2U\nsys %2S' - -The BSD /usr/bin/time format can be emulated with: - - TIMEFORMAT=$'\t%1R real\t%1U user\t%1S sys' - -The System V /usr/bin/time format can be emulated with: - - TIMEFORMAT=$'\nreal\t%1R\nuser\t%1U\nsys\t%1S' - -The ksh format can be emulated with: - - TIMEFORMAT=$'\nreal\t%2lR\nuser\t%2lU\nsys\t%2lS' - -G5) How do I get the current directory into my prompt? - -Bash provides a number of backslash-escape sequences which are expanded -when the prompt string (PS1 or PS2) is displayed. The full list is in -the manual page. - -The \w expansion gives the full pathname of the current directory, with -a tilde (`~') substituted for the current value of $HOME. The \W -expansion gives the basename of the current directory. To put the full -pathname of the current directory into the path without any tilde -subsitution, use $PWD. Here are some examples: - - PS1='\w$ ' # current directory with tilde - PS1='\W$ ' # basename of current directory - PS1='$PWD$ ' # full pathname of current directory - -The single quotes are important in the final example to prevent $PWD from -being expanded when the assignment to PS1 is performed. - -G6) How can I rename "*.foo" to "*.bar"? - -Use the pattern removal functionality described in D3. The following `for' -loop will do the trick: - - for f in *.foo; do - mv $f ${f%foo}bar - done - -G7) How can I translate a filename from uppercase to lowercase? - -The script examples/functions/lowercase, originally written by John DuBois, -will do the trick. The converse is left as an exercise. - -G8) How can I write a filename expansion (globbing) pattern that will match - all files in the current directory except "." and ".."? - -You must have set the `extglob' shell option using `shopt -s extglob' to use -this: - - echo .!(.|) * - -A solution that works without extended globbing is given in the Unix Shell -FAQ, posted periodically to comp.unix.shell. - -Section H: Where do I go from here? - -H1) How do I report bugs in bash, and where should I look for fixes and - advice? - -Use the `bashbug' script to report bugs. It is built and -installed at the same time as bash. It provides a standard -template for reporting a problem and automatically includes -information about your configuration and build environment. - -`bashbug' sends its reports to bug-bash@gnu.org, which -is a large mailing list gatewayed to the usenet newsgroup gnu.bash.bug. - -Bug fixes, answers to questions, and announcements of new releases -are all posted to gnu.bash.bug. Discussions concerning bash features -and problems also take place there. - -To reach the bash maintainers directly, send mail to -bash-maintainers@gnu.org. - -H2) What kind of bash documentation is there? - -First, look in the doc directory in the bash distribution. It should -contain at least the following files: - -bash.1 an extensive, thorough Unix-style manual page -builtins.1 a manual page covering just bash builtin commands -bashref.texi a reference manual in GNU tex`info format -bashref.info an info version of the reference manual -FAQ this file -article.ms text of an article written for The Linux Journal -readline.3 a man page describing readline - -Postscript, HTML, and ASCII files created from the above source are -available in the documentation distribution. - -There is additional documentation available for anonymous FTP from host -ftp.cwru.edu in the `pub/bash' directory. - -Cameron Newham and Bill Rosenblatt have written a book on bash, published -by O'Reilly and Associates. The book is based on Bill Rosenblatt's Korn -Shell book. The title is ``Learning the Bash Shell'', and the ISBN number -is 1-56592-147-X. Look for it in fine bookstores near you. This book -covers bash-1.14, but has an appendix describing some of the new features -in bash-2.0. - -A second edition of this book is available, published in January, 1998. -The ISBN number is 1-56592-347-2. Look for it in the same fine bookstores -or on the web. - -The GNU Bash Reference Manual has been published as a printed book by -Network Theory Ltd (Paperback, ISBN: 0-9541617-7-7, Feb 2003). It covers -bash-2.0 and is available from most online bookstores (see -http://www.network-theory.co.uk/bash/manual/ for details). The publisher -will donate $1 to the Free Software Foundation for each copy sold. - -H3) What's coming in future versions? - -These are features I hope to include in a future version of bash. - -a better bash debugger (a minimally-tested version is included with bash-2.05b) -associative arrays -co-processes, but with a new-style syntax that looks like function declaration - -H4) What's on the bash `wish list' for future versions? - -These are features that may or may not appear in a future version of bash. - -breaking some of the shell functionality into embeddable libraries -a module system like zsh's, using dynamic loading like builtins -better internationalization using GNU `gettext' -date-stamped command history -a bash programmer's guide with a chapter on creating loadable builtins -a better loadable interface to perl with access to the shell builtins and - variables (contributions gratefully accepted) -ksh93-like `nameref' variables -ksh93-like `+=' variable assignment operator -ksh93-like `xx.yy' variables (including some of the .sh.* variables) and - associated disipline functions -Some of the new ksh93 pattern matching operators, like backreferencing - -H5) When will the next release appear? - -The next version will appear sometime in 2002. Never make predictions. - - -This document is Copyright 1995-2003 by Chester Ramey. - -Permission is hereby granted, without written agreement and -without license or royalty fees, to use, copy, and distribute -this document for any purpose, provided that the above copyright -notice appears in all copies of this document and that the -contents of this document remain unaltered. diff --git a/doc/bash.1~ b/doc/bash.1~ deleted file mode 100644 index 654ba54a0..000000000 --- a/doc/bash.1~ +++ /dev/null @@ -1,10116 +0,0 @@ -.\" -.\" MAN PAGE COMMENTS to -.\" -.\" Chet Ramey -.\" Case Western Reserve University -.\" chet@po.cwru.edu -.\" -.\" Last Change: Sun Jan 29 21:16:46 EST 2012 -.\" -.\" bash_builtins, strip all but Built-Ins section -.if \n(zZ=1 .ig zZ -.if \n(zY=1 .ig zY -.TH BASH 1 "2012 January 29" "GNU Bash 4.2" -.\" -.\" There's some problem with having a `@' -.\" in a tagged paragraph with the BSD man macros. -.\" It has to do with `@' appearing in the }1 macro. -.\" This is a problem on 4.3 BSD and Ultrix, but Sun -.\" appears to have fixed it. -.\" If you're seeing the characters -.\" `@u-3p' appearing before the lines reading -.\" `possible-hostname-completions -.\" and `complete-hostname' down in READLINE, -.\" then uncomment this redefinition. -.\" -.de }1 -.ds ]X \&\\*(]B\\ -.nr )E 0 -.if !"\\$1"" .nr )I \\$1n -.}f -.ll \\n(LLu -.in \\n()Ru+\\n(INu+\\n()Iu -.ti \\n(INu -.ie !\\n()Iu+\\n()Ru-\w\\*(]Xu-3p \{\\*(]X -.br\} -.el \\*(]X\h|\\n()Iu+\\n()Ru\c -.}f -.. -.\" -.\" File Name macro. This used to be `.PN', for Path Name, -.\" but Sun doesn't seem to like that very much. -.\" -.de FN -\fI\|\\$1\|\fP -.. -.SH NAME -bash \- GNU Bourne-Again SHell -.SH SYNOPSIS -.B bash -[options] -[command_string | file] -.SH COPYRIGHT -.if n Bash is Copyright (C) 1989-2012 by the Free Software Foundation, Inc. -.if t Bash is Copyright \(co 1989-2012 by the Free Software Foundation, Inc. -.SH DESCRIPTION -.B Bash -is an \fBsh\fR-compatible command language interpreter that -executes commands read from the standard input or from a file. -.B Bash -also incorporates useful features from the \fIKorn\fP and \fIC\fP -shells (\fBksh\fP and \fBcsh\fP). -.PP -.B Bash -is intended to be a conformant implementation of the -Shell and Utilities portion of the IEEE POSIX specification -(IEEE Standard 1003.1). -.B Bash -can be configured to be POSIX-conformant by default. -.SH OPTIONS -All of the single-character shell options documented in the -description of the \fBset\fR builtin command can be used as options -when the shell is invoked. -In addition, \fBbash\fR -interprets the following options when it is invoked: -.PP -.PD 0 -.TP 10 -.B \-c -If the -.B \-c -option is present, then commands are read from the first non-option argument -.IR command_string . -If there are arguments after the -.IR command_string , -they are assigned to the positional parameters, starting with -.BR $0 . -.TP -.B \-i -If the -.B \-i -option is present, the shell is -.IR interactive . -.TP -.B \-l -Make -.B bash -act as if it had been invoked as a login shell (see -.SM -.B INVOCATION -below). -.TP -.B \-r -If the -.B \-r -option is present, the shell becomes -.I restricted -(see -.SM -.B "RESTRICTED SHELL" -below). -.TP -.B \-s -If the -.B \-s -option is present, or if no arguments remain after option -processing, then commands are read from the standard input. -This option allows the positional parameters to be set -when invoking an interactive shell. -.TP -.B \-D -A list of all double-quoted strings preceded by \fB$\fP -is printed on the standard output. -These are the strings that -are subject to language translation when the current locale -is not \fBC\fP or \fBPOSIX\fP. -This implies the \fB\-n\fP option; no commands will be executed. -.TP -.B [\-+]O [\fIshopt_option\fP] -\fIshopt_option\fP is one of the shell options accepted by the -\fBshopt\fP builtin (see -.SM -.B SHELL BUILTIN COMMANDS -below). -If \fIshopt_option\fP is present, \fB\-O\fP sets the value of that option; -\fB+O\fP unsets it. -If \fIshopt_option\fP is not supplied, the names and values of the shell -options accepted by \fBshopt\fP are printed on the standard output. -If the invocation option is \fB+O\fP, the output is displayed in a format -that may be reused as input. -.TP -.B \-\- -A -.B \-\- -signals the end of options and disables further option processing. -Any arguments after the -.B \-\- -are treated as filenames and arguments. An argument of -.B \- -is equivalent to \fB\-\-\fP. -.PD -.PP -.B Bash -also interprets a number of multi-character options. -These options must appear on the command line before the -single-character options to be recognized. -.PP -.PD 0 -.TP -.B \-\-debugger -Arrange for the debugger profile to be executed before the shell -starts. -Turns on extended debugging mode (see the description of the -.B extdebug -option to the -.B shopt -builtin below). -.TP -.B \-\-dump\-po\-strings -Equivalent to \fB\-D\fP, but the output is in the GNU \fIgettext\fP -\fBpo\fP (portable object) file format. -.TP -.B \-\-dump\-strings -Equivalent to \fB\-D\fP. -.TP -.B \-\-help -Display a usage message on standard output and exit successfully. -.TP -\fB\-\-init\-file\fP \fIfile\fP -.PD 0 -.TP -\fB\-\-rcfile\fP \fIfile\fP -.PD -Execute commands from -.I file -instead of the standard personal initialization file -.I ~/.bashrc -if the shell is interactive (see -.SM -.B INVOCATION -below). -.TP -.B \-\-login -Equivalent to \fB\-l\fP. -.TP -.B \-\-noediting -Do not use the GNU -.B readline -library to read command lines when the shell is interactive. -.TP -.B \-\-noprofile -Do not read either the system-wide startup file -.FN /etc/profile -or any of the personal initialization files -.IR ~/.bash_profile , -.IR ~/.bash_login , -or -.IR ~/.profile . -By default, -.B bash -reads these files when it is invoked as a login shell (see -.SM -.B INVOCATION -below). -.TP -.B \-\-norc -Do not read and execute the personal initialization file -.I ~/.bashrc -if the shell is interactive. -This option is on by default if the shell is invoked as -.BR sh . -.TP -.B \-\-posix -Change the behavior of \fBbash\fP where the default operation differs -from the POSIX standard to match the standard (\fIposix mode\fP). -.TP -.B \-\-restricted -The shell becomes restricted (see -.SM -.B "RESTRICTED SHELL" -below). -.TP -.B \-\-verbose -Equivalent to \fB\-v\fP. -.TP -.B \-\-version -Show version information for this instance of -.B bash -on the standard output and exit successfully. -.PD -.SH ARGUMENTS -If arguments remain after option processing, and neither the -.B \-c -nor the -.B \-s -option has been supplied, the first argument is assumed to -be the name of a file containing shell commands. -If -.B bash -is invoked in this fashion, -.B $0 -is set to the name of the file, and the positional parameters -are set to the remaining arguments. -.B Bash -reads and executes commands from this file, then exits. -\fBBash\fP's exit status is the exit status of the last command -executed in the script. -If no commands are executed, the exit status is 0. -An attempt is first made to open the file in the current directory, and, -if no file is found, then the shell searches the directories in -.SM -.B PATH -for the script. -.SH INVOCATION -A \fIlogin shell\fP is one whose first character of argument zero is a -.BR \- , -or one started with the -.B \-\-login -option. -.PP -An \fIinteractive\fP shell is one started without non-option arguments -and without the -.B \-c -option -whose standard input and error are -both connected to terminals (as determined by -.IR isatty (3)), -or one started with the -.B \-i -option. -.SM -.B PS1 -is set and -.B $\- -includes -.B i -if -.B bash -is interactive, -allowing a shell script or a startup file to test this state. -.PP -The following paragraphs describe how -.B bash -executes its startup files. -If any of the files exist but cannot be read, -.B bash -reports an error. -Tildes are expanded in filenames as described below under -.B "Tilde Expansion" -in the -.SM -.B EXPANSION -section. -.PP -When -.B bash -is invoked as an interactive login shell, or as a non-interactive shell -with the \fB\-\-login\fP option, it first reads and -executes commands from the file \fI/etc/profile\fP, if that -file exists. -After reading that file, it looks for \fI~/.bash_profile\fP, -\fI~/.bash_login\fP, and \fI~/.profile\fP, in that order, and reads -and executes commands from the first one that exists and is readable. -The -.B \-\-noprofile -option may be used when the shell is started to inhibit this behavior. -.PP -When a login shell exits, -.B bash -reads and executes commands from the file \fI~/.bash_logout\fP, if it -exists. -.PP -When an interactive shell that is not a login shell is started, -.B bash -reads and executes commands from \fI~/.bashrc\fP, if that file exists. -This may be inhibited by using the -.B \-\-norc -option. -The \fB\-\-rcfile\fP \fIfile\fP option will force -.B bash -to read and execute commands from \fIfile\fP instead of \fI~/.bashrc\fP. -.PP -When -.B bash -is started non-interactively, to run a shell script, for example, it -looks for the variable -.SM -.B BASH_ENV -in the environment, expands its value if it appears there, and uses the -expanded value as the name of a file to read and execute. -.B Bash -behaves as if the following command were executed: -.sp .5 -.RS -.if t \f(CWif [ \-n "$BASH_ENV" ]; then . "$BASH_ENV"; fi\fP -.if n if [ \-n "$BASH_ENV" ]; then . "$BASH_ENV"; fi -.RE -.sp .5 -but the value of the -.SM -.B PATH -variable is not used to search for the filename. -.PP -If -.B bash -is invoked with the name -.BR sh , -it tries to mimic the startup behavior of historical versions of -.B sh -as closely as possible, -while conforming to the POSIX standard as well. -When invoked as an interactive login shell, or a non-interactive -shell with the \fB\-\-login\fP option, it first attempts to -read and execute commands from -.I /etc/profile -and -.IR ~/.profile , -in that order. -The -.B \-\-noprofile -option may be used to inhibit this behavior. -When invoked as an interactive shell with the name -.BR sh , -.B bash -looks for the variable -.SM -.BR ENV , -expands its value if it is defined, and uses the -expanded value as the name of a file to read and execute. -Since a shell invoked as -.B sh -does not attempt to read and execute commands from any other startup -files, the -.B \-\-rcfile -option has no effect. -A non-interactive shell invoked with the name -.B sh -does not attempt to read any other startup files. -When invoked as -.BR sh , -.B bash -enters -.I posix -mode after the startup files are read. -.PP -When -.B bash -is started in -.I posix -mode, as with the -.B \-\-posix -command line option, it follows the POSIX standard for startup files. -In this mode, interactive shells expand the -.SM -.B ENV -variable and commands are read and executed from the file -whose name is the expanded value. -No other startup files are read. -.PP -.B Bash -attempts to determine when it is being run with its standard input -connected to a network connection, as when executed by the remote shell -daemon, usually \fIrshd\fP, or the secure shell daemon \fIsshd\fP. -If -.B bash -determines it is being run in this fashion, it reads and executes -commands from \fI~/.bashrc\fP, if that file exists and is readable. -It will not do this if invoked as \fBsh\fP. -The -.B \-\-norc -option may be used to inhibit this behavior, and the -.B \-\-rcfile -option may be used to force another file to be read, but -\fIrshd\fP does not generally invoke the shell with those options -or allow them to be specified. -.PP -If the shell is started with the effective user (group) id not equal to the -real user (group) id, and the \fB\-p\fP option is not supplied, no startup -files are read, shell functions are not inherited from the environment, the -.SM -.BR SHELLOPTS , -.SM -.BR BASHOPTS , -.SM -.BR CDPATH , -and -.SM -.B GLOBIGNORE -variables, if they appear in the environment, are ignored, -and the effective user id is set to the real user id. -If the \fB\-p\fP option is supplied at invocation, the startup behavior is -the same, but the effective user id is not reset. -.SH DEFINITIONS -.PP -The following definitions are used throughout the rest of this -document. -.PD 0 -.TP -.B blank -A space or tab. -.TP -.B word -A sequence of characters considered as a single unit by the shell. -Also known as a -.BR token . -.TP -.B name -A -.I word -consisting only of alphanumeric characters and underscores, and -beginning with an alphabetic character or an underscore. Also -referred to as an -.BR identifier . -.TP -.B metacharacter -A character that, when unquoted, separates words. One of the following: -.br -.RS -.PP -.if t \fB| & ; ( ) < > space tab\fP -.if n \fB| & ; ( ) < > space tab\fP -.RE -.PP -.TP -.B control operator -A \fItoken\fP that performs a control function. It is one of the following -symbols: -.RS -.PP -.if t \fB|| & && ; ;; ( ) | |& \fP -.if n \fB|| & && ; ;; ( ) | |& \fP -.RE -.PD -.SH "RESERVED WORDS" -\fIReserved words\fP are words that have a special meaning to the shell. -The following words are recognized as reserved when unquoted and either -the first word of a simple command (see -.SM -.B SHELL GRAMMAR -below) or the third word of a -.B case -or -.B for -command: -.if t .RS -.PP -.B -.if n ! case do done elif else esac fi for function if in select then until while { } time [[ ]] -.if t ! case do done elif else esac fi for function if in select then until while { } time [[ ]] -.if t .RE -.SH "SHELL GRAMMAR" -.SS Simple Commands -.PP -A \fIsimple command\fP is a sequence of optional variable assignments -followed by \fBblank\fP-separated words and redirections, and -terminated by a \fIcontrol operator\fP. The first word -specifies the command to be executed, and is passed as argument zero. -The remaining words are passed as arguments to the invoked command. -.PP -The return value of a \fIsimple command\fP is its exit status, or -128+\fIn\^\fP if the command is terminated by signal -.IR n . -.SS Pipelines -.PP -A \fIpipeline\fP is a sequence of one or more commands separated by -one of the control operators -.B | -or \fB|&\fP. -The format for a pipeline is: -.RS -.PP -[\fBtime\fP [\fB\-p\fP]] [ ! ] \fIcommand\fP [ [\fB|\fP\(bv\fB|&\fP] \fIcommand2\fP ... ] -.RE -.PP -The standard output of -.I command -is connected via a pipe to the standard input of -.IR command2 . -This connection is performed before any redirections specified by the -command (see -.SM -.B REDIRECTION -below). -If \fB|&\fP is used, \fIcommand\fP's standard output and standard error -are connected to -\fIcommand2\fP's standard input through the pipe; -it is shorthand for \fB2>&1 |\fP. -This implicit redirection of the standard error is -performed after any redirections specified by the command. -.PP -The return status of a pipeline is the exit status of the last -command, unless the \fBpipefail\fP option is enabled. -If \fBpipefail\fP is enabled, the pipeline's return status is the -value of the last (rightmost) command to exit with a non-zero status, -or zero if all commands exit successfully. -If the reserved word -.B ! -precedes a pipeline, the exit status of that pipeline is the logical -negation of the exit status as described above. -The shell waits for all commands in the pipeline to -terminate before returning a value. -.PP -If the -.B time -reserved word precedes a pipeline, the elapsed as well as user and -system time consumed by its execution are reported when the pipeline -terminates. -The \fB\-p\fP option changes the output format to that specified by POSIX. -When the shell is in \fIposix mode\fP, it does not recognize -\fBtime\fP as a reserved word if the next token begins with a `-'. -The -.SM -.B TIMEFORMAT -variable may be set to a format string that specifies how the timing -information should be displayed; see the description of -.SM -.B TIMEFORMAT -under -.B "Shell Variables" -below. -.PP -When the shell is in \fIposix mode\fP, \fBtime\fP -may be followed by a newline. In this case, the shell displays the -total user and system time consumed by the shell and its children. -The -.SM -.B TIMEFORMAT -variable may be used to specify the format of -the time information. -.PP -Each command in a pipeline is executed as a separate process (i.e., in a -subshell). -.SS Lists -.PP -A \fIlist\fP is a sequence of one or more pipelines separated by one -of the operators -.BR ; , -.BR & , -.BR && , -or -.BR || , -and optionally terminated by one of -.BR ; , -.BR & , -or -.BR . -.PP -Of these list operators, -.B && -and -.B || -have equal precedence, followed by -.B ; -and -.BR & , -which have equal precedence. -.PP -A sequence of one or more newlines may appear in a \fIlist\fP instead -of a semicolon to delimit commands. -.PP -If a command is terminated by the control operator -.BR & , -the shell executes the command in the \fIbackground\fP -in a subshell. The shell does not wait for the command to -finish, and the return status is 0. Commands separated by a -.B ; -are executed sequentially; the shell waits for each -command to terminate in turn. The return status is the -exit status of the last command executed. -.PP -AND and OR lists are sequences of one of more pipelines separated by the -\fB&&\fP and \fB||\fP control operators, respectively. -AND and OR lists are executed with left associativity. -An AND list has the form -.RS -.PP -\fIcommand1\fP \fB&&\fP \fIcommand2\fP -.RE -.PP -.I command2 -is executed if, and only if, -.I command1 -returns an exit status of zero. -.PP -An OR list has the form -.RS -.PP -\fIcommand1\fP \fB||\fP \fIcommand2\fP -.PP -.RE -.PP -.I command2 -is executed if and only if -.I command1 -returns a non-zero exit status. -The return status of -AND and OR lists is the exit status of the last command -executed in the list. -.SS Compound Commands -.PP -A \fIcompound command\fP is one of the following. -In most cases a \fIlist\fP in a command's description may be separated from -the rest of the command by one or more newlines, and may be followed by a -newline in place of a semicolon. -.TP -(\fIlist\fP) -\fIlist\fP is executed in a subshell environment (see -.SM -\fBCOMMAND EXECUTION ENVIRONMENT\fP -below). -Variable assignments and builtin -commands that affect the shell's environment do not remain in effect -after the command completes. The return status is the exit status of -\fIlist\fP. -.TP -{ \fIlist\fP; } -\fIlist\fP is simply executed in the current shell environment. -\fIlist\fP must be terminated with a newline or semicolon. -This is known as a \fIgroup command\fP. -The return status is the exit status of -\fIlist\fP. -Note that unlike the metacharacters \fB(\fP and \fB)\fP, \fB{\fP and -\fB}\fP are \fIreserved words\fP and must occur where a reserved -word is permitted to be recognized. Since they do not cause a word -break, they must be separated from \fIlist\fP by whitespace or another -shell metacharacter. -.TP -((\fIexpression\fP)) -The \fIexpression\fP is evaluated according to the rules described -below under -.SM -.BR "ARITHMETIC EVALUATION" . -If the value of the expression is non-zero, the return status is 0; -otherwise the return status is 1. This is exactly equivalent to -\fBlet "\fIexpression\fP"\fR. -.TP -\fB[[\fP \fIexpression\fP \fB]]\fP -Return a status of 0 or 1 depending on the evaluation of -the conditional expression \fIexpression\fP. -Expressions are composed of the primaries described below under -.SM -.BR "CONDITIONAL EXPRESSIONS" . -Word splitting and pathname expansion are not performed on the words -between the \fB[[\fP and \fB]]\fP; tilde expansion, -parameter and variable expansion, -arithmetic expansion, command substitution, process -substitution, and quote removal are performed. -Conditional operators such as \fB\-f\fP must be unquoted to be recognized -as primaries. -.if t .sp 0.5 -.if n .sp 1 -When used with \fB[[\fP, the \fB<\fP and \fB>\fP operators sort -lexicographically using the current locale. -.if t .sp 0.5 -.if n .sp 1 -When the \fB==\fP and \fB!=\fP operators are used, the string to the -right of the operator is considered a pattern and matched according -to the rules described below under \fBPattern Matching\fP. -If the shell option -.B nocasematch -is enabled, the match is performed without regard to the case -of alphabetic characters. -The return value is 0 if the string matches (\fB==\fP) or does not match -(\fB!=\fP) the pattern, and 1 otherwise. -Any part of the pattern may be quoted to force the quoted portion -to be matched as a string. -.if t .sp 0.5 -.if n .sp 1 -An additional binary operator, \fB=~\fP, is available, with the same -precedence as \fB==\fP and \fB!=\fP. -When it is used, the string to the right of the operator is considered -an extended regular expression and matched accordingly (as in \fIregex\fP(3)). -The return value is 0 if the string matches -the pattern, and 1 otherwise. -If the regular expression is syntactically incorrect, the conditional -expression's return value is 2. -If the shell option -.B nocasematch -is enabled, the match is performed without regard to the case -of alphabetic characters. -Any part of the pattern may be quoted to force the quoted portion -to be matched as a string. -Bracket expressions in regular expressions must be treated carefully, -since normal quoting characters lose their meanings between brackets. -If the pattern is stored in a shell variable, quoting the variable -expansion forces the entire pattern to be matched as a string. -Substrings matched by parenthesized subexpressions within the regular -expression are saved in the array variable -.SM -.BR BASH_REMATCH . -The element of -.SM -.B BASH_REMATCH -with index 0 is the portion of the string -matching the entire regular expression. -The element of -.SM -.B BASH_REMATCH -with index \fIn\fP is the portion of the -string matching the \fIn\fPth parenthesized subexpression. -.if t .sp 0.5 -.if n .sp 1 -Expressions may be combined using the following operators, listed -in decreasing order of precedence: -.if t .sp 0.5 -.if n .sp 1 -.RS -.PD 0 -.TP -.B ( \fIexpression\fP ) -Returns the value of \fIexpression\fP. -This may be used to override the normal precedence of operators. -.TP -.B ! \fIexpression\fP -True if -.I expression -is false. -.TP -\fIexpression1\fP \fB&&\fP \fIexpression2\fP -True if both -.I expression1 -and -.I expression2 -are true. -.TP -\fIexpression1\fP \fB||\fP \fIexpression2\fP -True if either -.I expression1 -or -.I expression2 -is true. -.PD -.LP -The \fB&&\fP and \fB||\fP -operators do not evaluate \fIexpression2\fP if the value of -\fIexpression1\fP is sufficient to determine the return value of -the entire conditional expression. -.RE -.TP -\fBfor\fP \fIname\fP [ [ \fBin\fP [ \fIword ...\fP ] ] ; ] \fBdo\fP \fIlist\fP ; \fBdone\fP -The list of words following \fBin\fP is expanded, generating a list -of items. -The variable \fIname\fP is set to each element of this list -in turn, and \fIlist\fP is executed each time. -If the \fBin\fP \fIword\fP is omitted, the \fBfor\fP command executes -\fIlist\fP once for each positional parameter that is set (see -.SM -.B PARAMETERS -below). -The return status is the exit status of the last command that executes. -If the expansion of the items following \fBin\fP results in an empty -list, no commands are executed, and the return status is 0. -.TP -\fBfor\fP (( \fIexpr1\fP ; \fIexpr2\fP ; \fIexpr3\fP )) ; \fBdo\fP \fIlist\fP ; \fBdone\fP -First, the arithmetic expression \fIexpr1\fP is evaluated according -to the rules described below under -.SM -.BR "ARITHMETIC EVALUATION" . -The arithmetic expression \fIexpr2\fP is then evaluated repeatedly -until it evaluates to zero. -Each time \fIexpr2\fP evaluates to a non-zero value, \fIlist\fP is -executed and the arithmetic expression \fIexpr3\fP is evaluated. -If any expression is omitted, it behaves as if it evaluates to 1. -The return value is the exit status of the last command in \fIlist\fP -that is executed, or false if any of the expressions is invalid. -.TP -\fBselect\fP \fIname\fP [ \fBin\fP \fIword\fP ] ; \fBdo\fP \fIlist\fP ; \fBdone\fP -The list of words following \fBin\fP is expanded, generating a list -of items. The set of expanded words is printed on the standard -error, each preceded by a number. If the \fBin\fP -\fIword\fP is omitted, the positional parameters are printed (see -.SM -.B PARAMETERS -below). The -.SM -.B PS3 -prompt is then displayed and a line read from the standard input. -If the line consists of a number corresponding to one of -the displayed words, then the value of -.I name -is set to that word. If the line is empty, the words and prompt -are displayed again. If EOF is read, the command completes. Any -other value read causes -.I name -to be set to null. The line read is saved in the variable -.SM -.BR REPLY . -The -.I list -is executed after each selection until a -.B break -command is executed. -The exit status of -.B select -is the exit status of the last command executed in -.IR list , -or zero if no commands were executed. -.TP -\fBcase\fP \fIword\fP \fBin\fP [ [(] \fIpattern\fP [ \fB|\fP \fIpattern\fP ] \ -... ) \fIlist\fP ;; ] ... \fBesac\fP -A \fBcase\fP command first expands \fIword\fP, and tries to match -it against each \fIpattern\fP in turn, using the same matching rules -as for pathname expansion (see -.B Pathname Expansion -below). -The \fIword\fP is expanded using tilde -expansion, parameter and variable expansion, arithmetic substitution, -command substitution, process substitution and quote removal. -Each \fIpattern\fP examined is expanded using tilde -expansion, parameter and variable expansion, arithmetic substitution, -command substitution, and process substitution. -If the shell option -.B nocasematch -is enabled, the match is performed without regard to the case -of alphabetic characters. -When a match is found, the corresponding \fIlist\fP is executed. -If the \fB;;\fP operator is used, no subsequent matches are attempted after -the first pattern match. -Using \fB;&\fP in place of \fB;;\fP causes execution to continue with -the \fIlist\fP associated with the next set of patterns. -Using \fB;;&\fP in place of \fB;;\fP causes the shell to test the next -pattern list in the statement, if any, and execute any associated \fIlist\fP -on a successful match. -The exit status is zero if no -pattern matches. Otherwise, it is the exit status of the -last command executed in \fIlist\fP. -.TP -\fBif\fP \fIlist\fP; \fBthen\fP \fIlist;\fP \ -[ \fBelif\fP \fIlist\fP; \fBthen\fP \fIlist\fP; ] ... \ -[ \fBelse\fP \fIlist\fP; ] \fBfi\fP -The -.B if -.I list -is executed. If its exit status is zero, the -\fBthen\fP \fIlist\fP is executed. Otherwise, each \fBelif\fP -\fIlist\fP is executed in turn, and if its exit status is zero, -the corresponding \fBthen\fP \fIlist\fP is executed and the -command completes. Otherwise, the \fBelse\fP \fIlist\fP is -executed, if present. The exit status is the exit status of the -last command executed, or zero if no condition tested true. -.TP -\fBwhile\fP \fIlist-1\fP; \fBdo\fP \fIlist-2\fP; \fBdone\fP -.PD 0 -.TP -\fBuntil\fP \fIlist-1\fP; \fBdo\fP \fIlist-2\fP; \fBdone\fP -.PD -The \fBwhile\fP command continuously executes the list -\fIlist-2\fP as long as the last command in the list \fIlist-1\fP returns -an exit status of zero. The \fBuntil\fP command is identical -to the \fBwhile\fP command, except that the test is negated; -.I list-2 -is executed as long as the last command in -.I list-1 -returns a non-zero exit status. -The exit status of the \fBwhile\fP and \fBuntil\fP commands -is the exit status -of the last command executed in \fIlist-2\fP, or zero if -none was executed. -.SS Coprocesses -.PP -A \fIcoprocess\fP is a shell command preceded by the \fBcoproc\fP reserved -word. -A coprocess is executed asynchronously in a subshell, as if the command -had been terminated with the \fB&\fP control operator, with a two-way pipe -established between the executing shell and the coprocess. -.PP -The format for a coprocess is: -.RS -.PP -\fBcoproc\fP [\fINAME\fP] \fIcommand\fP [\fIredirections\fP] -.RE -.PP -This creates a coprocess named \fINAME\fP. -If \fINAME\fP is not supplied, the default name is \fBCOPROC\fP. -\fINAME\fP must not be supplied if \fIcommand\fP is a \fIsimple -command\fP (see above); otherwise, it is interpreted as the first word -of the simple command. -When the coprocess is executed, the shell creates an array variable (see -.B Arrays -below) named \fINAME\fP in the context of the executing shell. -The standard output of -.I command -is connected via a pipe to a file descriptor in the executing shell, -and that file descriptor is assigned to \fINAME\fP[0]. -The standard input of -.I command -is connected via a pipe to a file descriptor in the executing shell, -and that file descriptor is assigned to \fINAME\fP[1]. -This pipe is established before any redirections specified by the -command (see -.SM -.B REDIRECTION -below). -The file descriptors can be utilized as arguments to shell commands -and redirections using standard word expansions. -The process ID of the shell spawned to execute the coprocess is -available as the value of the variable \fINAME\fP_PID. -The \fBwait\fP -builtin command may be used to wait for the coprocess to terminate. -.PP -The return status of a coprocess is the exit status of \fIcommand\fP. -.SS Shell Function Definitions -.PP -A shell function is an object that is called like a simple command and -executes a compound command with a new set of positional parameters. -Shell functions are declared as follows: -.TP -\fIname\fP () \fIcompound\-command\fP [\fIredirection\fP] -.PD 0 -.TP -\fBfunction\fP \fIname\fP [()] \fIcompound\-command\fP [\fIredirection\fP] -.PD -This defines a function named \fIname\fP. -The reserved word \fBfunction\fP is optional. -If the \fBfunction\fP reserved word is supplied, the parentheses are optional. -The \fIbody\fP of the function is the compound command -.I compound\-command -(see \fBCompound Commands\fP above). -That command is usually a \fIlist\fP of commands between { and }, but -may be any command listed under \fBCompound Commands\fP above. -\fIcompound\-command\fP is executed whenever \fIname\fP is specified as the -name of a simple command. -When in \fIposix mode\fP, \fIname\fP may not be the name of one of the -POSIX \fIspecial builtins\fP. -Any redirections (see -.SM -.B REDIRECTION -below) specified when a function is defined are performed -when the function is executed. -The exit status of a function definition is zero unless a syntax error -occurs or a readonly function with the same name already exists. -When executed, the exit status of a function is the exit status of the -last command executed in the body. (See -.SM -.B FUNCTIONS -below.) -.SH COMMENTS -In a non-interactive shell, or an interactive shell in which the -.B interactive_comments -option to the -.B shopt -builtin is enabled (see -.SM -.B "SHELL BUILTIN COMMANDS" -below), a word beginning with -.B # -causes that word and all remaining characters on that line to -be ignored. An interactive shell without the -.B interactive_comments -option enabled does not allow comments. The -.B interactive_comments -option is on by default in interactive shells. -.SH QUOTING -\fIQuoting\fP is used to remove the special meaning of certain -characters or words to the shell. Quoting can be used to -disable special treatment for special characters, to prevent -reserved words from being recognized as such, and to prevent -parameter expansion. -.PP -Each of the \fImetacharacters\fP listed above under -.SM -.B DEFINITIONS -has special meaning to the shell and must be quoted if it is to -represent itself. -.PP -When the command history expansion facilities are being used -(see -.SM -.B HISTORY EXPANSION -below), the -\fIhistory expansion\fP character, usually \fB!\fP, must be quoted -to prevent history expansion. -.PP -There are three quoting mechanisms: the -.IR "escape character" , -single quotes, and double quotes. -.PP -A non-quoted backslash (\fB\e\fP) is the -.IR "escape character" . -It preserves the literal value of the next character that follows, -with the exception of . If a \fB\e\fP pair -appears, and the backslash is not itself quoted, the \fB\e\fP -is treated as a line continuation (that is, it is removed from the -input stream and effectively ignored). -.PP -Enclosing characters in single quotes preserves the literal value -of each character within the quotes. A single quote may not occur -between single quotes, even when preceded by a backslash. -.PP -Enclosing characters in double quotes preserves the literal value -of all characters within the quotes, with the exception of -.BR $ , -.BR \` , -.BR \e , -and, when history expansion is enabled, -.BR ! . -The characters -.B $ -and -.B \` -retain their special meaning within double quotes. The backslash -retains its special meaning only when followed by one of the following -characters: -.BR $ , -.BR \` , -\^\fB"\fP\^, -.BR \e , -or -.BR . -A double quote may be quoted within double quotes by preceding it with -a backslash. -If enabled, history expansion will be performed unless an -.B ! -appearing in double quotes is escaped using a backslash. -The backslash preceding the -.B ! -is not removed. -.PP -The special parameters -.B * -and -.B @ -have special meaning when in double -quotes (see -.SM -.B PARAMETERS -below). -.PP -Words of the form \fB$\fP\(aq\fIstring\fP\(aq are treated specially. The -word expands to \fIstring\fP, with backslash-escaped characters replaced -as specified by the ANSI C standard. Backslash escape sequences, if -present, are decoded as follows: -.RS -.PD 0 -.TP -.B \ea -alert (bell) -.TP -.B \eb -backspace -.TP -.B \ee -.TP -.B \eE -an escape character -.TP -.B \ef -form feed -.TP -.B \en -new line -.TP -.B \er -carriage return -.TP -.B \et -horizontal tab -.TP -.B \ev -vertical tab -.TP -.B \e\e -backslash -.TP -.B \e\(aq -single quote -.TP -.B \e\(dq -double quote -.TP -.B \e\fInnn\fP -the eight-bit character whose value is the octal value \fInnn\fP -(one to three digits) -.TP -.B \ex\fIHH\fP -the eight-bit character whose value is the hexadecimal value \fIHH\fP -(one or two hex digits) -.TP -.B \eu\fIHHHH\fP -the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value -\fIHHHH\fP (one to four hex digits) -.TP -.B \eU\fIHHHHHHHH\fP -the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value -\fIHHHHHHHH\fP (one to eight hex digits) -.TP -.B \ec\fIx\fP -a control-\fIx\fP character -.PD -.RE -.LP -The expanded result is single-quoted, as if the dollar sign had -not been present. -.PP -A double-quoted string preceded by a dollar sign (\fB$\fP\(dq\fIstring\fP\(dq) -will cause the string to be translated according to the current locale. -If the current locale is \fBC\fP or \fBPOSIX\fP, the dollar sign -is ignored. -If the string is translated and replaced, the replacement is -double-quoted. -.SH PARAMETERS -A -.I parameter -is an entity that stores values. -It can be a -.IR name , -a number, or one of the special characters listed below under -.BR "Special Parameters" . -A -.I variable -is a parameter denoted by a -.IR name . -A variable has a \fIvalue\fP and zero or more \fIattributes\fP. -Attributes are assigned using the -.B declare -builtin command (see -.B declare -below in -.SM -.BR "SHELL BUILTIN COMMANDS" ). -.PP -A parameter is set if it has been assigned a value. The null string is -a valid value. Once a variable is set, it may be unset only by using -the -.B unset -builtin command (see -.SM -.B SHELL BUILTIN COMMANDS -below). -.PP -A -.I variable -may be assigned to by a statement of the form -.RS -.PP -\fIname\fP=[\fIvalue\fP] -.RE -.PP -If -.I value -is not given, the variable is assigned the null string. All -.I values -undergo tilde expansion, parameter and variable expansion, -command substitution, arithmetic expansion, and quote -removal (see -.SM -.B EXPANSION -below). If the variable has its -.B integer -attribute set, then -.I value -is evaluated as an arithmetic expression even if the $((...)) expansion is -not used (see -.B "Arithmetic Expansion" -below). -Word splitting is not performed, with the exception -of \fB"$@"\fP as explained below under -.BR "Special Parameters" . -Pathname expansion is not performed. -Assignment statements may also appear as arguments to the -.BR alias , -.BR declare , -.BR typeset , -.BR export , -.BR readonly , -and -.B local -builtin commands. -When in \fIposix mode\fP, these builtins may appear in a command after -one or more instances of the \fBcommand\fP builtin and retain these -assignment statement properties. -.PP -In the context where an assignment statement is assigning a value -to a shell variable or array index, the += operator can be used to -append to or add to the variable's previous value. -When += is applied to a variable for which the \fIinteger\fP attribute has been -set, \fIvalue\fP is evaluated as an arithmetic expression and added to the -variable's current value, which is also evaluated. -When += is applied to an array variable using compound assignment (see -.B Arrays -below), the -variable's value is not unset (as it is when using =), and new values are -appended to the array beginning at one greater than the array's maximum index -(for indexed arrays) or added as additional key\-value pairs in an -associative array. -When applied to a string-valued variable, \fIvalue\fP is expanded and -appended to the variable's value. -.SS Positional Parameters -.PP -A -.I positional parameter -is a parameter denoted by one or more -digits, other than the single digit 0. Positional parameters are -assigned from the shell's arguments when it is invoked, -and may be reassigned using the -.B set -builtin command. Positional parameters may not be assigned to -with assignment statements. The positional parameters are -temporarily replaced when a shell function is executed (see -.SM -.B FUNCTIONS -below). -.PP -When a positional parameter consisting of more than a single -digit is expanded, it must be enclosed in braces (see -.SM -.B EXPANSION -below). -.SS Special Parameters -.PP -The shell treats several parameters specially. These parameters may -only be referenced; assignment to them is not allowed. -.PD 0 -.TP -.B * -Expands to the positional parameters, starting from one. When the -expansion occurs within double quotes, it expands to a single word -with the value of each parameter separated by the first character -of the -.SM -.B IFS -special variable. That is, "\fB$*\fP" is equivalent -to "\fB$1\fP\fIc\fP\fB$2\fP\fIc\fP\fB...\fP", where -.I c -is the first character of the value of the -.SM -.B IFS -variable. If -.SM -.B IFS -is unset, the parameters are separated by spaces. -If -.SM -.B IFS -is null, the parameters are joined without intervening separators. -.TP -.B @ -Expands to the positional parameters, starting from one. When the -expansion occurs within double quotes, each parameter expands to a -separate word. That is, "\fB$@\fP" is equivalent to -"\fB$1\fP" "\fB$2\fP" ... -If the double-quoted expansion occurs within a word, the expansion of -the first parameter is joined with the beginning part of the original -word, and the expansion of the last parameter is joined with the last -part of the original word. -When there are no positional parameters, "\fB$@\fP" and -.B $@ -expand to nothing (i.e., they are removed). -.TP -.B # -Expands to the number of positional parameters in decimal. -.TP -.B ? -Expands to the exit status of the most recently executed foreground -pipeline. -.TP -.B \- -Expands to the current option flags as specified upon invocation, -by the -.B set -builtin command, or those set by the shell itself -(such as the -.B \-i -option). -.TP -.B $ -Expands to the process ID of the shell. In a () subshell, it -expands to the process ID of the current shell, not the -subshell. -.TP -.B ! -Expands to the process ID of the most recently executed background -(asynchronous) command. -.TP -.B 0 -Expands to the name of the shell or shell script. This is set at -shell initialization. If -.B bash -is invoked with a file of commands, -.B $0 -is set to the name of that file. If -.B bash -is started with the -.B \-c -option, then -.B $0 -is set to the first argument after the string to be -executed, if one is present. Otherwise, it is set -to the filename used to invoke -.BR bash , -as given by argument zero. -.TP -.B _ -At shell startup, set to the absolute pathname used to invoke the -shell or shell script being executed as passed in the environment -or argument list. -Subsequently, expands to the last argument to the previous command, -after expansion. -Also set to the full pathname used to invoke each command executed -and placed in the environment exported to that command. -When checking mail, this parameter holds the name of the mail file -currently being checked. -.PD -.SS Shell Variables -.PP -The following variables are set by the shell: -.PP -.PD 0 -.TP -.B BASH -Expands to the full filename used to invoke this instance of -.BR bash . -.TP -.B BASHOPTS -A colon-separated list of enabled shell options. Each word in -the list is a valid argument for the -.B \-s -option to the -.B shopt -builtin command (see -.SM -.B "SHELL BUILTIN COMMANDS" -below). The options appearing in -.SM -.B BASHOPTS -are those reported as -.I on -by \fBshopt\fP. -If this variable is in the environment when -.B bash -starts up, each shell option in the list will be enabled before -reading any startup files. -This variable is read-only. -.TP -.B BASHPID -Expands to the process ID of the current \fBbash\fP process. -This differs from \fB$$\fP under certain circumstances, such as subshells -that do not require \fBbash\fP to be re-initialized. -.TP -.B BASH_ALIASES -An associative array variable whose members correspond to the internal -list of aliases as maintained by the \fBalias\fP builtin. -Elements added to this array appear in the alias list; unsetting array -elements cause aliases to be removed from the alias list. -.TP -.B BASH_ARGC -An array variable whose values are the number of parameters in each -frame of the current \fBbash\fP execution call stack. -The number of -parameters to the current subroutine (shell function or script executed -with \fB.\fP or \fBsource\fP) is at the top of the stack. -When a subroutine is executed, the number of parameters passed is pushed onto -.SM -.BR BASH_ARGC . -The shell sets -.SM -.B BASH_ARGC -only when in extended debugging mode (see the description of the -.B extdebug -option to the -.B shopt -builtin below) -.TP -.B BASH_ARGV -An array variable containing all of the parameters in the current \fBbash\fP -execution call stack. The final parameter of the last subroutine call -is at the top of the stack; the first parameter of the initial call is -at the bottom. When a subroutine is executed, the parameters supplied -are pushed onto -.SM -.BR BASH_ARGV . -The shell sets -.SM -.B BASH_ARGV -only when in extended debugging mode -(see the description of the -.B extdebug -option to the -.B shopt -builtin below) -.TP -.B BASH_CMDS -An associative array variable whose members correspond to the internal -hash table of commands as maintained by the \fBhash\fP builtin. -Elements added to this array appear in the hash table; unsetting array -elements cause commands to be removed from the hash table. -.TP -.B BASH_COMMAND -The command currently being executed or about to be executed, unless the -shell is executing a command as the result of a trap, -in which case it is the command executing at the time of the trap. -.TP -.B BASH_EXECUTION_STRING -The command argument to the \fB\-c\fP invocation option. -.TP -.B BASH_LINENO -An array variable whose members are the line numbers in source files -where each corresponding member of -.SM -.B FUNCNAME -was invoked. -\fB${BASH_LINENO[\fP\fI$i\fP\fB]}\fP is the line number in the source -file (\fB${BASH_SOURCE[\fP\fI$i+1\fP\fB]}\fP) where -\fB${FUNCNAME[\fP\fI$i\fP\fB]}\fP was called -(or \fB${BASH_LINENO[\fP\fI$i-1\fP\fB]}\fP if referenced within another -shell function). -Use -.SM -.B LINENO -to obtain the current line number. -.TP -.B BASH_REMATCH -An array variable whose members are assigned by the \fB=~\fP binary -operator to the \fB[[\fP conditional command. -The element with index 0 is the portion of the string -matching the entire regular expression. -The element with index \fIn\fP is the portion of the -string matching the \fIn\fPth parenthesized subexpression. -This variable is read-only. -.TP -.B BASH_SOURCE -An array variable whose members are the source filenames -where the corresponding shell function names in the -.SM -.B FUNCNAME -array variable are defined. -The shell function -\fB${FUNCNAME[\fP\fI$i\fP\fB]}\fP is defined in the file -\fB${BASH_SOURCE[\fP\fI$i\fP\fB]}\fP and called from -\fB${BASH_SOURCE[\fP\fI$i+1\fP\fB]}\fP. -.TP -.B BASH_SUBSHELL -Incremented by one within each subshell or subshell environment when -the shell begins executing in that environment. -The initial value is 0. -.TP -.B BASH_VERSINFO -A readonly array variable whose members hold version information for -this instance of -.BR bash . -The values assigned to the array members are as follows: -.sp .5 -.RS -.TP 24 -.B BASH_VERSINFO[\fR0\fP] -The major version number (the \fIrelease\fP). -.TP -.B BASH_VERSINFO[\fR1\fP] -The minor version number (the \fIversion\fP). -.TP -.B BASH_VERSINFO[\fR2\fP] -The patch level. -.TP -.B BASH_VERSINFO[\fR3\fP] -The build version. -.TP -.B BASH_VERSINFO[\fR4\fP] -The release status (e.g., \fIbeta1\fP). -.TP -.B BASH_VERSINFO[\fR5\fP] -The value of -.SM -.BR MACHTYPE . -.RE -.TP -.B BASH_VERSION -Expands to a string describing the version of this instance of -.BR bash . -.TP -.B COMP_CWORD -An index into \fB${COMP_WORDS}\fP of the word containing the current -cursor position. -This variable is available only in shell functions invoked by the -programmable completion facilities (see \fBProgrammable Completion\fP -below). -.TP -.B COMP_KEY -The key (or final key of a key sequence) used to invoke the current -completion function. -.TP -.B COMP_LINE -The current command line. -This variable is available only in shell functions and external -commands invoked by the -programmable completion facilities (see \fBProgrammable Completion\fP -below). -.TP -.B COMP_POINT -The index of the current cursor position relative to the beginning of -the current command. -If the current cursor position is at the end of the current command, -the value of this variable is equal to \fB${#COMP_LINE}\fP. -This variable is available only in shell functions and external -commands invoked by the -programmable completion facilities (see \fBProgrammable Completion\fP -below). -.TP -.B COMP_TYPE -Set to an integer value corresponding to the type of completion attempted -that caused a completion function to be called: -\fITAB\fP, for normal completion, -\fI?\fP, for listing completions after successive tabs, -\fI!\fP, for listing alternatives on partial word completion, -\fI@\fP, to list completions if the word is not unmodified, -or -\fI%\fP, for menu completion. -This variable is available only in shell functions and external -commands invoked by the -programmable completion facilities (see \fBProgrammable Completion\fP -below). -.TP -.B COMP_WORDBREAKS -The set of characters that the \fBreadline\fP library treats as word -separators when performing word completion. -If -.SM -.B COMP_WORDBREAKS -is unset, it loses its special properties, even if it is -subsequently reset. -.TP -.B COMP_WORDS -An array variable (see \fBArrays\fP below) consisting of the individual -words in the current command line. -The line is split into words as \fBreadline\fP would split it, using -.SM -.B COMP_WORDBREAKS -as described above. -This variable is available only in shell functions invoked by the -programmable completion facilities (see \fBProgrammable Completion\fP -below). -.TP -.B COPROC -An array variable (see \fBArrays\fP below) created to hold the file descriptors -for output from and input to an unnamed coprocess (see \fBCoprocesses\fP -above). -.TP -.B DIRSTACK -An array variable (see -.B Arrays -below) containing the current contents of the directory stack. -Directories appear in the stack in the order they are displayed by the -.B dirs -builtin. -Assigning to members of this array variable may be used to modify -directories already in the stack, but the -.B pushd -and -.B popd -builtins must be used to add and remove directories. -Assignment to this variable will not change the current directory. -If -.SM -.B DIRSTACK -is unset, it loses its special properties, even if it is -subsequently reset. -.TP -.B EUID -Expands to the effective user ID of the current user, initialized at -shell startup. This variable is readonly. -.TP -.B FUNCNAME -An array variable containing the names of all shell functions -currently in the execution call stack. -The element with index 0 is the name of any currently-executing -shell function. -The bottom-most element (the one with the highest index) is -.if t \f(CW"main"\fP. -.if n "main". -This variable exists only when a shell function is executing. -Assignments to -.SM -.B FUNCNAME -have no effect and return an error status. -If -.SM -.B FUNCNAME -is unset, it loses its special properties, even if it is -subsequently reset. -.if t .sp 0.5 -.if n .sp 1 -This variable can be used with \fBBASH_LINENO\fP and \fBBASH_SOURCE\fP. -Each element of \fBFUNCNAME\fP has corresponding elements in -\fBBASH_LINENO\fP and \fBBASH_SOURCE\fP to describe the call stack. -For instance, \fB${FUNCNAME[\fP\fI$i\fP\fB]}\fP was called from the file -\fB${BASH_SOURCE[\fP\fI$i+1\fP\fB]}\fP at line number -\fB${BASH_LINENO[\fP\fI$i\fP\fB]}\fP. -The \fBcaller\fP builtin displays the current call stack using this -information. -.TP -.B GROUPS -An array variable containing the list of groups of which the current -user is a member. -Assignments to -.SM -.B GROUPS -have no effect and return an error status. -If -.SM -.B GROUPS -is unset, it loses its special properties, even if it is -subsequently reset. -.TP -.B HISTCMD -The history number, or index in the history list, of the current -command. -If -.SM -.B HISTCMD -is unset, it loses its special properties, even if it is -subsequently reset. -.TP -.B HOSTNAME -Automatically set to the name of the current host. -.TP -.B HOSTTYPE -Automatically set to a string that uniquely -describes the type of machine on which -.B bash -is executing. -The default is system-dependent. -.TP -.B LINENO -Each time this parameter is referenced, the shell substitutes -a decimal number representing the current sequential line number -(starting with 1) within a script or function. When not in a -script or function, the value substituted is not guaranteed to -be meaningful. -If -.SM -.B LINENO -is unset, it loses its special properties, even if it is -subsequently reset. -.TP -.B MACHTYPE -Automatically set to a string that fully describes the system -type on which -.B bash -is executing, in the standard GNU \fIcpu-company-system\fP format. -The default is system-dependent. -.TP -.B MAPFILE -An array variable (see \fBArrays\fP below) created to hold the text -read by the \fBmapfile\fP builtin when no variable name is supplied. -.TP -.B OLDPWD -The previous working directory as set by the -.B cd -command. -.TP -.B OPTARG -The value of the last option argument processed by the -.B getopts -builtin command (see -.SM -.B SHELL BUILTIN COMMANDS -below). -.TP -.B OPTIND -The index of the next argument to be processed by the -.B getopts -builtin command (see -.SM -.B SHELL BUILTIN COMMANDS -below). -.TP -.B OSTYPE -Automatically set to a string that -describes the operating system on which -.B bash -is executing. -The default is system-dependent. -.TP -.B PIPESTATUS -An array variable (see -.B Arrays -below) containing a list of exit status values from the processes -in the most-recently-executed foreground pipeline (which may -contain only a single command). -.TP -.B PPID -The process ID of the shell's parent. This variable is readonly. -.TP -.B PWD -The current working directory as set by the -.B cd -command. -.TP -.B RANDOM -Each time this parameter is referenced, a random integer between -0 and 32767 is -generated. The sequence of random numbers may be initialized by assigning -a value to -.SM -.BR RANDOM . -If -.SM -.B RANDOM -is unset, it loses its special properties, even if it is -subsequently reset. -.TP -.B READLINE_LINE -The contents of the -.B readline -line buffer, for use with -.if t \f(CWbind -x\fP -.if n "bind -x" -(see -.SM -.B "SHELL BUILTIN COMMANDS" -below). -.TP -.B READLINE_POINT -The position of the insertion point in the -.B readline -line buffer, for use with -.if t \f(CWbind -x\fP -.if n "bind -x" -(see -.SM -.B "SHELL BUILTIN COMMANDS" -below). -.TP -.B REPLY -Set to the line of input read by the -.B read -builtin command when no arguments are supplied. -.TP -.B SECONDS -Each time this parameter is -referenced, the number of seconds since shell invocation is returned. If a -value is assigned to -.SM -.BR SECONDS , -the value returned upon subsequent -references is -the number of seconds since the assignment plus the value assigned. -If -.SM -.B SECONDS -is unset, it loses its special properties, even if it is -subsequently reset. -.TP -.B SHELLOPTS -A colon-separated list of enabled shell options. Each word in -the list is a valid argument for the -.B \-o -option to the -.B set -builtin command (see -.SM -.B "SHELL BUILTIN COMMANDS" -below). The options appearing in -.SM -.B SHELLOPTS -are those reported as -.I on -by \fBset \-o\fP. -If this variable is in the environment when -.B bash -starts up, each shell option in the list will be enabled before -reading any startup files. -This variable is read-only. -.TP -.B SHLVL -Incremented by one each time an instance of -.B bash -is started. -.TP -.B UID -Expands to the user ID of the current user, initialized at shell startup. -This variable is readonly. -.PD -.PP -The following variables are used by the shell. In some cases, -.B bash -assigns a default value to a variable; these cases are noted -below. -.PP -.PD 0 -.TP -.B BASH_ENV -If this parameter is set when \fBbash\fP is executing a shell script, -its value is interpreted as a filename containing commands to -initialize the shell, as in -.IR ~/.bashrc . -The value of -.SM -.B BASH_ENV -is subjected to parameter expansion, command substitution, and arithmetic -expansion before being interpreted as a filename. -.SM -.B PATH -is not used to search for the resultant filename. -.TP -.B BASH_XTRACEFD -If set to an integer corresponding to a valid file descriptor, \fBbash\fP -will write the trace output generated when -.if t \f(CWset -x\fP -.if n \fIset -x\fP -is enabled to that file descriptor. -The file descriptor is closed when -.SM -.B BASH_XTRACEFD -is unset or assigned a new value. -Unsetting -.SM -.B BASH_XTRACEFD -or assigning it the empty string causes the -trace output to be sent to the standard error. -Note that setting -.SM -.B BASH_XTRACEFD -to 2 (the standard error file -descriptor) and then unsetting it will result in the standard error -being closed. -.TP -.B CDPATH -The search path for the -.B cd -command. -This is a colon-separated list of directories in which the shell looks -for destination directories specified by the -.B cd -command. -A sample value is -.if t \f(CW".:~:/usr"\fP. -.if n ".:~:/usr". -.TP -.B COLUMNS -Used by the \fBselect\fP compound command to determine the terminal width -when printing selection lists. Automatically set in an interactive shell -upon receipt of a -.SM -.BR SIGWINCH . -.TP -.B COMPREPLY -An array variable from which \fBbash\fP reads the possible completions -generated by a shell function invoked by the programmable completion -facility (see \fBProgrammable Completion\fP below). -Each array element contains one possible completion. -.TP -.B EMACS -If \fBbash\fP finds this variable in the environment when the shell starts -with value -.if t \f(CWt\fP, -.if n "t", -it assumes that the shell is running in an Emacs shell buffer and disables -line editing. -.TP -.B ENV -Similar to -.SM -.BR BASH_ENV ; -used when the shell is invoked in POSIX mode. -.TP -.B FCEDIT -The default editor for the -.B fc -builtin command. -.TP -.B FIGNORE -A colon-separated list of suffixes to ignore when performing -filename completion (see -.SM -.B READLINE -below). -A filename whose suffix matches one of the entries in -.SM -.B FIGNORE -is excluded from the list of matched filenames. -A sample value is -.if t \f(CW".o:~"\fP. -.if n ".o:~". -.TP -.B FUNCNEST -If set to a numeric value greater than 0, defines a maximum function -nesting level. Function invocations that exceed this nesting level -will cause the current command to abort. -.TP -.B GLOBIGNORE -A colon-separated list of patterns defining the set of filenames to -be ignored by pathname expansion. -If a filename matched by a pathname expansion pattern also matches one -of the patterns in -.SM -.BR GLOBIGNORE , -it is removed from the list of matches. -.TP -.B HISTCONTROL -A colon-separated list of values controlling how commands are saved on -the history list. -If the list of values includes -.IR ignorespace , -lines which begin with a -.B space -character are not saved in the history list. -A value of -.I ignoredups -causes lines matching the previous history entry to not be saved. -A value of -.I ignoreboth -is shorthand for \fIignorespace\fP and \fIignoredups\fP. -A value of -.IR erasedups -causes all previous lines matching the current line to be removed from -the history list before that line is saved. -Any value not in the above list is ignored. -If -.SM -.B HISTCONTROL -is unset, or does not include a valid value, -all lines read by the shell parser are saved on the history list, -subject to the value of -.SM -.BR HISTIGNORE . -The second and subsequent lines of a multi-line compound command are -not tested, and are added to the history regardless of the value of -.SM -.BR HISTCONTROL . -.TP -.B HISTFILE -The name of the file in which command history is saved (see -.SM -.B HISTORY -below). The default value is \fI~/.bash_history\fP. If unset, the -command history is not saved when an interactive shell exits. -.TP -.B HISTFILESIZE -The maximum number of lines contained in the history file. When this -variable is assigned a value, the history file is truncated, if -necessary, -to contain no more than that number of lines by removing the oldest entries. -The history file is also truncated to this size after -writing it when an interactive shell exits. -If the value is 0, the history file is truncated to zero size. -Non-numeric values and numeric values less than zero inhibit truncation. -The shell sets the default value to the value of \fBHISTSIZE\fP -after reading any startup files. -.TP -.B HISTIGNORE -A colon-separated list of patterns used to decide which command lines -should be saved on the history list. Each pattern is anchored at the -beginning of the line and must match the complete line (no implicit -`\fB*\fP' is appended). Each pattern is tested against the line -after the checks specified by -.SM -.B HISTCONTROL -are applied. -In addition to the normal shell pattern matching characters, `\fB&\fP' -matches the previous history line. `\fB&\fP' may be escaped using a -backslash; the backslash is removed before attempting a match. -The second and subsequent lines of a multi-line compound command are -not tested, and are added to the history regardless of the value of -.SM -.BR HISTIGNORE . -.TP -.B HISTSIZE -The number of commands to remember in the command history (see -.SM -.B HISTORY -below). -If the value is 0, commands are not saved in the history list. -Numeric values less than zero result in every command being saved -on the history list (there is no limit). -The shell sets the default value to 500 after reading any startup files. -.TP -.B HISTTIMEFORMAT -If this variable is set and not null, its value is used as a format string -for \fIstrftime\fP(3) to print the time stamp associated with each history -entry displayed by the \fBhistory\fP builtin. -If this variable is set, time stamps are written to the history file so -they may be preserved across shell sessions. -This uses the history comment character to distinguish timestamps from -other history lines. -.TP -.B HOME -The home directory of the current user; the default argument for the -\fBcd\fP builtin command. -The value of this variable is also used when performing tilde expansion. -.TP -.B HOSTFILE -Contains the name of a file in the same format as -.FN /etc/hosts -that should be read when the shell needs to complete a -hostname. -The list of possible hostname completions may be changed while the -shell is running; -the next time hostname completion is attempted after the -value is changed, -.B bash -adds the contents of the new file to the existing list. -If -.SM -.B HOSTFILE -is set, but has no value, or does not name a readable file, -\fBbash\fP attempts to read -.FN /etc/hosts -to obtain the list of possible hostname completions. -When -.SM -.B HOSTFILE -is unset, the hostname list is cleared. -.TP -.B IFS -The -.I Internal Field Separator -that is used -for word splitting after expansion and to -split lines into words with the -.B read -builtin command. The default value is -``''. -.TP -.B IGNOREEOF -Controls the -action of an interactive shell on receipt of an -.SM -.B EOF -character as the sole input. If set, the value is the number of -consecutive -.SM -.B EOF -characters which must be -typed as the first characters on an input line before -.B bash -exits. If the variable exists but does not have a numeric value, or -has no value, the default value is 10. If it does not exist, -.SM -.B EOF -signifies the end of input to the shell. -.TP -.B INPUTRC -The filename for the -.B readline -startup file, overriding the default of -.FN ~/.inputrc -(see -.SM -.B READLINE -below). -.TP -.B LANG -Used to determine the locale category for any category not specifically -selected with a variable starting with \fBLC_\fP. -.TP -.B LC_ALL -This variable overrides the value of -.SM -.B LANG -and any other -\fBLC_\fP variable specifying a locale category. -.TP -.B LC_COLLATE -This variable determines the collation order used when sorting the -results of pathname expansion, and determines the behavior of range -expressions, equivalence classes, and collating sequences within -pathname expansion and pattern matching. -.TP -.B LC_CTYPE -This variable determines the interpretation of characters and the -behavior of character classes within pathname expansion and pattern -matching. -.TP -.B LC_MESSAGES -This variable determines the locale used to translate double-quoted -strings preceded by a \fB$\fP. -.TP -.B LC_NUMERIC -This variable determines the locale category used for number formatting. -.TP -.B LINES -Used by the \fBselect\fP compound command to determine the column length -for printing selection lists. Automatically set by an interactive shell -upon receipt of a -.SM -.BR SIGWINCH . -.TP -.B MAIL -If this parameter is set to a file or directory name and the -.SM -.B MAILPATH -variable is not set, -.B bash -informs the user of the arrival of mail in the specified file or -Maildir-format directory. -.TP -.B MAILCHECK -Specifies how -often (in seconds) -.B bash -checks for mail. The default is 60 seconds. When it is time to check -for mail, the shell does so before displaying the primary prompt. -If this variable is unset, or set to a value that is not a number -greater than or equal to zero, the shell disables mail checking. -.TP -.B MAILPATH -A colon-separated list of filenames to be checked for mail. -The message to be printed when mail arrives in a particular file -may be specified by separating the filename from the message with a `?'. -When used in the text of the message, \fB$_\fP expands to the name of -the current mailfile. -Example: -.RS -.PP -\fBMAILPATH\fP=\(aq/var/mail/bfox?"You have mail":~/shell\-mail?"$_ has mail!"\(aq -.PP -.B Bash -supplies a default value for this variable, but the location of the user -mail files that it uses is system dependent (e.g., /var/mail/\fB$USER\fP). -.RE -.TP -.B OPTERR -If set to the value 1, -.B bash -displays error messages generated by the -.B getopts -builtin command (see -.SM -.B SHELL BUILTIN COMMANDS -below). -.SM -.B OPTERR -is initialized to 1 each time the shell is invoked or a shell -script is executed. -.TP -.B PATH -The search path for commands. It -is a colon-separated list of directories in which -the shell looks for commands (see -.SM -.B COMMAND EXECUTION -below). -A zero-length (null) directory name in the value of -.SM -.B PATH -indicates the current directory. -A null directory name may appear as two adjacent colons, or as an initial -or trailing colon. -The default path is system-dependent, -and is set by the administrator who installs -.BR bash . -A common value is -.if t \f(CW/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin\fP. -.if n ``/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin''. -.TP -.B POSIXLY_CORRECT -If this variable is in the environment when \fBbash\fP starts, the shell -enters \fIposix mode\fP before reading the startup files, as if the -.B \-\-posix -invocation option had been supplied. If it is set while the shell is -running, \fBbash\fP enables \fIposix mode\fP, as if the command -.if t \f(CWset -o posix\fP -.if n \fIset -o posix\fP -had been executed. -.TP -.B PROMPT_COMMAND -If set, the value is executed as a command prior to issuing each primary -prompt. -.TP -.B PROMPT_DIRTRIM -If set to a number greater than zero, the value is used as the number of -trailing directory components to retain when expanding the \fB\ew\fP and -\fB\eW\fP prompt string escapes (see -.SM -.B PROMPTING -below). Characters removed are replaced with an ellipsis. -.TP -.B PS1 -The value of this parameter is expanded (see -.SM -.B PROMPTING -below) and used as the primary prompt string. The default value is -``\fB\es\-\ev\e$ \fP''. -.TP -.B PS2 -The value of this parameter is expanded as with -.SM -.B PS1 -and used as the secondary prompt string. The default is -``\fB> \fP''. -.TP -.B PS3 -The value of this parameter is used as the prompt for the -.B select -command (see -.SM -.B SHELL GRAMMAR -above). -.TP -.B PS4 -The value of this parameter is expanded as with -.SM -.B PS1 -and the value is printed before each command -.B bash -displays during an execution trace. The first character of -.SM -.B PS4 -is replicated multiple times, as necessary, to indicate multiple -levels of indirection. The default is ``\fB+ \fP''. -.TP -.B SHELL -The full pathname to the shell is kept in this environment variable. -If it is not set when the shell starts, -.B bash -assigns to it the full pathname of the current user's login shell. -.TP -.B TIMEFORMAT -The value of this parameter is used as a format string specifying -how the timing information for pipelines prefixed with the -.B time -reserved word should be displayed. -The \fB%\fP character introduces an escape sequence that is -expanded to a time value or other information. -The escape sequences and their meanings are as follows; the -braces denote optional portions. -.sp .5 -.RS -.PD 0 -.TP 10 -.B %% -A literal \fB%\fP. -.TP -.B %[\fIp\fP][l]R -The elapsed time in seconds. -.TP -.B %[\fIp\fP][l]U -The number of CPU seconds spent in user mode. -.TP -.B %[\fIp\fP][l]S -The number of CPU seconds spent in system mode. -.TP -.B %P -The CPU percentage, computed as (%U + %S) / %R. -.PD -.RE -.IP -The optional \fIp\fP is a digit specifying the \fIprecision\fP, -the number of fractional digits after a decimal point. -A value of 0 causes no decimal point or fraction to be output. -At most three places after the decimal point may be specified; -values of \fIp\fP greater than 3 are changed to 3. -If \fIp\fP is not specified, the value 3 is used. -.IP -The optional \fBl\fP specifies a longer format, including -minutes, of the form \fIMM\fPm\fISS\fP.\fIFF\fPs. -The value of \fIp\fP determines whether or not the fraction is -included. -.IP -If this variable is not set, \fBbash\fP acts as if it had the -value \fB$\(aq\enreal\et%3lR\enuser\et%3lU\ensys\t%3lS\(aq\fP. -If the value is null, no timing information is displayed. -A trailing newline is added when the format string is displayed. -.PD 0 -.TP -.B TMOUT -If set to a value greater than zero, -.SM -.B TMOUT -is treated as the -default timeout for the \fBread\fP builtin. -The \fBselect\fP command terminates if input does not arrive -after -.SM -.B TMOUT -seconds when input is coming from a terminal. -In an interactive shell, the value is interpreted as the -number of seconds to wait for input after issuing the primary prompt. -.B Bash -terminates after waiting for that number of seconds if input does -not arrive. -.TP -.B TMPDIR -If set, \fBbash\fP uses its value as the name of a directory in which -\fBbash\fP creates temporary files for the shell's use. -.TP -.B auto_resume -This variable controls how the shell interacts with the user and -job control. If this variable is set, single word simple -commands without redirections are treated as candidates for resumption -of an existing stopped job. There is no ambiguity allowed; if there is -more than one job beginning with the string typed, the job most recently -accessed is selected. The -.I name -of a stopped job, in this context, is the command line used to -start it. -If set to the value -.IR exact , -the string supplied must match the name of a stopped job exactly; -if set to -.IR substring , -the string supplied needs to match a substring of the name of a -stopped job. The -.I substring -value provides functionality analogous to the -.B %? -job identifier (see -.SM -.B JOB CONTROL -below). If set to any other value, the supplied string must -be a prefix of a stopped job's name; this provides functionality -analogous to the \fB%\fP\fIstring\fP job identifier. -.TP -.B histchars -The two or three characters which control history expansion -and tokenization (see -.SM -.B HISTORY EXPANSION -below). The first character is the \fIhistory expansion\fP character, -the character which signals the start of a history -expansion, normally `\fB!\fP'. -The second character is the \fIquick substitution\fP -character, which is used as shorthand for re-running the previous -command entered, substituting one string for another in the command. -The default is `\fB^\fP'. -The optional third character is the character -which indicates that the remainder of the line is a comment when found -as the first character of a word, normally `\fB#\fP'. The history -comment character causes history substitution to be skipped for the -remaining words on the line. It does not necessarily cause the shell -parser to treat the rest of the line as a comment. -.PD -.SS Arrays -.B Bash -provides one-dimensional indexed and associative array variables. -Any variable may be used as an indexed array; the -.B declare -builtin will explicitly declare an array. -There is no maximum -limit on the size of an array, nor any requirement that members -be indexed or assigned contiguously. -Indexed arrays are referenced using integers (including arithmetic -expressions) and are zero-based; associative arrays are referenced -using arbitrary strings. -.PP -An indexed array is created automatically if any variable is assigned to -using the syntax \fIname\fP[\fIsubscript\fP]=\fIvalue\fP. The -.I subscript -is treated as an arithmetic expression that must evaluate to a number. -To explicitly declare an indexed array, use -.B declare \-a \fIname\fP -(see -.SM -.B SHELL BUILTIN COMMANDS -below). -.B declare \-a \fIname\fP[\fIsubscript\fP] -is also accepted; the \fIsubscript\fP is ignored. -.PP -Associative arrays are created using -.BR "declare \-A \fIname\fP" . -.PP -Attributes may be -specified for an array variable using the -.B declare -and -.B readonly -builtins. Each attribute applies to all members of an array. -.PP -Arrays are assigned to using compound assignments of the form -\fIname\fP=\fB(\fPvalue\fI1\fP ... value\fIn\fP\fB)\fP, where each -\fIvalue\fP is of the form [\fIsubscript\fP]=\fIstring\fP. -Indexed array assignments do not require anything but \fIstring\fP. -When assigning to indexed arrays, if the optional brackets and subscript -are supplied, that index is assigned to; -otherwise the index of the element assigned is the last index assigned -to by the statement plus one. Indexing starts at zero. -.PP -When assigning to an associative array, the subscript is required. -.PP -This syntax is also accepted by the -.B declare -builtin. Individual array elements may be assigned to using the -\fIname\fP[\fIsubscript\fP]=\fIvalue\fP syntax introduced above. -.PP -Any element of an array may be referenced using -${\fIname\fP[\fIsubscript\fP]}. The braces are required to avoid -conflicts with pathname expansion. If -\fIsubscript\fP is \fB@\fP or \fB*\fP, the word expands to -all members of \fIname\fP. These subscripts differ only when the -word appears within double quotes. If the word is double-quoted, -${\fIname\fP[*]} expands to a single -word with the value of each array member separated by the first -character of the -.SM -.B IFS -special variable, and ${\fIname\fP[@]} expands each element of -\fIname\fP to a separate word. When there are no array members, -${\fIname\fP[@]} expands to nothing. -If the double-quoted expansion occurs within a word, the expansion of -the first parameter is joined with the beginning part of the original -word, and the expansion of the last parameter is joined with the last -part of the original word. -This is analogous to the expansion -of the special parameters \fB*\fP and \fB@\fP (see -.B Special Parameters -above). ${#\fIname\fP[\fIsubscript\fP]} expands to the length of -${\fIname\fP[\fIsubscript\fP]}. If \fIsubscript\fP is \fB*\fP or -\fB@\fP, the expansion is the number of elements in the array. -Referencing an array variable without a subscript is equivalent to -referencing the array with a subscript of 0. -If the -.I subscript -used to reference an element of an indexed array -evaluates to a number less than zero, it is used as -an offset from one greater than the array's maximum index (so a subcript -of -1 refers to the last element of the array). -.PP -An array variable is considered set if a subscript has been assigned a -value. The null string is a valid value. -.PP -The -.B unset -builtin is used to destroy arrays. \fBunset\fP \fIname\fP[\fIsubscript\fP] -destroys the array element at index \fIsubscript\fP. -Care must be taken to avoid unwanted side effects caused by pathname -expansion. -\fBunset\fP \fIname\fP, where \fIname\fP is an array, or -\fBunset\fP \fIname\fP[\fIsubscript\fP], where -\fIsubscript\fP is \fB*\fP or \fB@\fP, removes the entire array. -.PP -The -.BR declare , -.BR local , -and -.B readonly -builtins each accept a -.B \-a -option to specify an indexed array and a -.B \-A -option to specify an associative array. -If both options are supplied, -.B \-A -takes precedence. -The -.B read -builtin accepts a -.B \-a -option to assign a list of words read from the standard input -to an array. The -.B set -and -.B declare -builtins display array values in a way that allows them to be -reused as assignments. -.SH EXPANSION -Expansion is performed on the command line after it has been split into -words. There are seven kinds of expansion performed: -.IR "brace expansion" , -.IR "tilde expansion" , -.IR "parameter and variable expansion" , -.IR "command substitution" , -.IR "arithmetic expansion" , -.IR "word splitting" , -and -.IR "pathname expansion" . -.PP -The order of expansions is: brace expansion, tilde expansion, -parameter, variable and arithmetic expansion and -command substitution -(done in a left-to-right fashion), word splitting, and pathname -expansion. -.PP -On systems that can support it, there is an additional expansion -available: \fIprocess substitution\fP. -.PP -Only brace expansion, word splitting, and pathname expansion -can change the number of words of the expansion; other expansions -expand a single word to a single word. -The only exceptions to this are the expansions of -"\fB$@\fP" and "\fB${\fP\fIname\fP\fB[@]}\fP" -as explained above (see -.SM -.BR PARAMETERS ). -.SS Brace Expansion -.PP -.I "Brace expansion" -is a mechanism by which arbitrary strings -may be generated. This mechanism is similar to -\fIpathname expansion\fP, but the filenames generated -need not exist. Patterns to be brace expanded take -the form of an optional -.IR preamble , -followed by either a series of comma-separated strings or -a sequence expression between a pair of braces, followed by -an optional -.IR postscript . -The preamble is prefixed to each string contained -within the braces, and the postscript is then appended -to each resulting string, expanding left to right. -.PP -Brace expansions may be nested. The results of each expanded -string are not sorted; left to right order is preserved. -For example, a\fB{\fPd,c,b\fB}\fPe expands into `ade ace abe'. -.PP -A sequence expression takes the form -\fB{\fP\fIx\fP\fB..\fP\fIy\fP\fB[..\fP\fIincr\fP\fB]}\fP, -where \fIx\fP and \fIy\fP are either integers or single characters, -and \fIincr\fP, an optional increment, is an integer. -When integers are supplied, the expression expands to each number between -\fIx\fP and \fIy\fP, inclusive. -Supplied integers may be prefixed with \fI0\fP to force each term to have the -same width. When either \fIx\fP or \fPy\fP begins with a zero, the shell -attempts to force all generated terms to contain the same number of digits, -zero-padding where necessary. -When characters are supplied, the expression expands to each character -lexicographically between \fIx\fP and \fIy\fP, inclusive. Note that -both \fIx\fP and \fIy\fP must be of the same type. -When the increment is supplied, it is used as the difference between -each term. The default increment is 1 or -1 as appropriate. -.PP -Brace expansion is performed before any other expansions, -and any characters special to other expansions are preserved -in the result. It is strictly textual. -.B Bash -does not apply any syntactic interpretation to the context of the -expansion or the text between the braces. -.PP -A correctly-formed brace expansion must contain unquoted opening -and closing braces, and at least one unquoted comma or a valid -sequence expression. -Any incorrectly formed brace expansion is left unchanged. -A \fB{\fP or \fB,\fP may be quoted with a backslash to prevent its -being considered part of a brace expression. -To avoid conflicts with parameter expansion, the string \fB${\fP -is not considered eligible for brace expansion. -.PP -This construct is typically used as shorthand when the common -prefix of the strings to be generated is longer than in the -above example: -.RS -.PP -mkdir /usr/local/src/bash/{old,new,dist,bugs} -.RE -or -.RS -chown root /usr/{ucb/{ex,edit},lib/{ex?.?*,how_ex}} -.RE -.PP -Brace expansion introduces a slight incompatibility with -historical versions of -.BR sh . -.B sh -does not treat opening or closing braces specially when they -appear as part of a word, and preserves them in the output. -.B Bash -removes braces from words as a consequence of brace -expansion. For example, a word entered to -.B sh -as \fIfile{1,2}\fP -appears identically in the output. The same word is -output as -.I file1 file2 -after expansion by -.BR bash . -If strict compatibility with -.B sh -is desired, start -.B bash -with the -.B +B -option or disable brace expansion with the -.B +B -option to the -.B set -command (see -.SM -.B SHELL BUILTIN COMMANDS -below). -.SS Tilde Expansion -.PP -If a word begins with an unquoted tilde character (`\fB~\fP'), all of -the characters preceding the first unquoted slash (or all characters, -if there is no unquoted slash) are considered a \fItilde-prefix\fP. -If none of the characters in the tilde-prefix are quoted, the -characters in the tilde-prefix following the tilde are treated as a -possible \fIlogin name\fP. -If this login name is the null string, the tilde is replaced with the -value of the shell parameter -.SM -.BR HOME . -If -.SM -.B HOME -is unset, the home directory of the user executing the shell is -substituted instead. -Otherwise, the tilde-prefix is replaced with the home directory -associated with the specified login name. -.PP -If the tilde-prefix is a `~+', the value of the shell variable -.SM -.B PWD -replaces the tilde-prefix. -If the tilde-prefix is a `~\-', the value of the shell variable -.SM -.BR OLDPWD , -if it is set, is substituted. -If the characters following the tilde in the tilde-prefix consist -of a number \fIN\fP, optionally prefixed -by a `+' or a `\-', the tilde-prefix is replaced with the corresponding -element from the directory stack, as it would be displayed by the -.B dirs -builtin invoked with the tilde-prefix as an argument. -If the characters following the tilde in the tilde-prefix consist of a -number without a leading `+' or `\-', `+' is assumed. -.PP -If the login name is invalid, or the tilde expansion fails, the word -is unchanged. -.PP -Each variable assignment is checked for unquoted tilde-prefixes immediately -following a -.B : -or the first -.BR = . -In these cases, tilde expansion is also performed. -Consequently, one may use filenames with tildes in assignments to -.SM -.BR PATH , -.SM -.BR MAILPATH , -and -.SM -.BR CDPATH , -and the shell assigns the expanded value. -.SS Parameter Expansion -.PP -The `\fB$\fP' character introduces parameter expansion, -command substitution, or arithmetic expansion. The parameter name -or symbol to be expanded may be enclosed in braces, which -are optional but serve to protect the variable to be expanded from -characters immediately following it which could be -interpreted as part of the name. -.PP -When braces are used, the matching ending brace is the first `\fB}\fP' -not escaped by a backslash or within a quoted string, and not within an -embedded arithmetic expansion, command substitution, or parameter -expansion. -.PP -.PD 0 -.TP -${\fIparameter\fP} -The value of \fIparameter\fP is substituted. The braces are required -when -.I parameter -is a positional parameter with more than one digit, -or when -.I parameter -is followed by a character which is not to be -interpreted as part of its name. -.PD -.PP -If the first character of \fIparameter\fP is an exclamation point (\fB!\fP), -a level of variable indirection is introduced. -\fBBash\fP uses the value of the variable formed from the rest of -\fIparameter\fP as the name of the variable; this variable is then -expanded and that value is used in the rest of the substitution, rather -than the value of \fIparameter\fP itself. -This is known as \fIindirect expansion\fP. -The exceptions to this are the expansions of ${\fB!\fP\fIprefix\fP\fB*\fP} and -${\fB!\fP\fIname\fP[\fI@\fP]} described below. -The exclamation point must immediately follow the left brace in order to -introduce indirection. -.PP -In each of the cases below, \fIword\fP is subject to tilde expansion, -parameter expansion, command substitution, and arithmetic expansion. -.PP -When not performing substring expansion, using the forms documented below, -\fBbash\fP tests for a parameter that is unset or null. Omitting the colon -results in a test only for a parameter that is unset. -.PP -.PD 0 -.TP -${\fIparameter\fP\fB:\-\fP\fIword\fP} -\fBUse Default Values\fP. If -.I parameter -is unset or null, the expansion of -.I word -is substituted. Otherwise, the value of -.I parameter -is substituted. -.TP -${\fIparameter\fP\fB:=\fP\fIword\fP} -\fBAssign Default Values\fP. -If -.I parameter -is unset or null, the expansion of -.I word -is assigned to -.IR parameter . -The value of -.I parameter -is then substituted. Positional parameters and special parameters may -not be assigned to in this way. -.TP -${\fIparameter\fP\fB:?\fP\fIword\fP} -\fBDisplay Error if Null or Unset\fP. -If -.I parameter -is null or unset, the expansion of \fIword\fP (or a message to that effect -if -.I word -is not present) is written to the standard error and the shell, if it -is not interactive, exits. Otherwise, the value of \fIparameter\fP is -substituted. -.TP -${\fIparameter\fP\fB:+\fP\fIword\fP} -\fBUse Alternate Value\fP. -If -.I parameter -is null or unset, nothing is substituted, otherwise the expansion of -.I word -is substituted. -.TP -${\fIparameter\fP\fB:\fP\fIoffset\fP} -.PD 0 -.TP -${\fIparameter\fP\fB:\fP\fIoffset\fP\fB:\fP\fIlength\fP} -.PD -\fBSubstring Expansion\fP. -Expands to up to \fIlength\fP characters of \fIparameter\fP -starting at the character specified by \fIoffset\fP. -If \fIlength\fP is omitted, expands to the substring of -\fIparameter\fP starting at the character specified by \fIoffset\fP. -\fIlength\fP and \fIoffset\fP are arithmetic expressions (see -.SM -.B -ARITHMETIC EVALUATION -below). -If \fIoffset\fP evaluates to a number less than zero, the value -is used as an offset from the end of the value of \fIparameter\fP. -If \fIlength\fP evaluates to a number less than zero, and \fIparameter\fP -is not \fB@\fP and not an indexed or associative array, it is interpreted -as an offset from the end of the value of \fIparameter\fP rather than -a number of characters, and the expansion is the characters between the -two offsets. -If \fIparameter\fP is \fB@\fP, the result is \fIlength\fP positional -parameters beginning at \fIoffset\fP. -If \fIparameter\fP is an indexed array name subscripted by @ or *, -the result is the \fIlength\fP -members of the array beginning with ${\fIparameter\fP[\fIoffset\fP]}. -A negative \fIoffset\fP is taken relative to one greater than the maximum -index of the specified array. -Substring expansion applied to an associative array produces undefined -results. -Note that a negative offset must be separated from the colon by at least -one space to avoid being confused with the :- expansion. -Substring indexing is zero-based unless the positional parameters -are used, in which case the indexing starts at 1 by default. -If \fIoffset\fP is 0, and the positional parameters are used, \fB$0\fP is -prefixed to the list. -.TP -${\fB!\fP\fIprefix\fP\fB*\fP} -.PD 0 -.TP -${\fB!\fP\fIprefix\fP\fB@\fP} -.PD -\fBNames matching prefix\fP. -Expands to the names of variables whose names begin with \fIprefix\fP, -separated by the first character of the -.SM -.B IFS -special variable. -When \fI@\fP is used and the expansion appears within double quotes, each -variable name expands to a separate word. -.TP -${\fB!\fP\fIname\fP[\fI@\fP]} -.PD 0 -.TP -${\fB!\fP\fIname\fP[\fI*\fP]} -.PD -\fBList of array keys\fP. -If \fIname\fP is an array variable, expands to the list of array indices -(keys) assigned in \fIname\fP. -If \fIname\fP is not an array, expands to 0 if \fIname\fP is set and null -otherwise. -When \fI@\fP is used and the expansion appears within double quotes, each -key expands to a separate word. -.TP -${\fB#\fP\fIparameter\fP} -\fBParameter length\fP. -The length in characters of the value of \fIparameter\fP is substituted. -If -.I parameter -is -.B * -or -.BR @ , -the value substituted is the number of positional parameters. -If -.I parameter -is an array name subscripted by -.B * -or -.BR @ , -the value substituted is the number of elements in the array. -.TP -${\fIparameter\fP\fB#\fP\fIword\fP} -.PD 0 -.TP -${\fIparameter\fP\fB##\fP\fIword\fP} -.PD -\fBRemove matching prefix pattern\fP. -The -.I word -is expanded to produce a pattern just as in pathname -expansion. If the pattern matches the beginning of -the value of -.IR parameter , -then the result of the expansion is the expanded value of -.I parameter -with the shortest matching pattern (the ``\fB#\fP'' case) or the -longest matching pattern (the ``\fB##\fP'' case) deleted. -If -.I parameter -is -.B @ -or -.BR * , -the pattern removal operation is applied to each positional -parameter in turn, and the expansion is the resultant list. -If -.I parameter -is an array variable subscripted with -.B @ -or -.BR * , -the pattern removal operation is applied to each member of the -array in turn, and the expansion is the resultant list. -.TP -${\fIparameter\fP\fB%\fP\fIword\fP} -.PD 0 -.TP -${\fIparameter\fP\fB%%\fP\fIword\fP} -.PD -\fBRemove matching suffix pattern\fP. -The \fIword\fP is expanded to produce a pattern just as in -pathname expansion. -If the pattern matches a trailing portion of the expanded value of -.IR parameter , -then the result of the expansion is the expanded value of -.I parameter -with the shortest matching pattern (the ``\fB%\fP'' case) or the -longest matching pattern (the ``\fB%%\fP'' case) deleted. -If -.I parameter -is -.B @ -or -.BR * , -the pattern removal operation is applied to each positional -parameter in turn, and the expansion is the resultant list. -If -.I parameter -is an array variable subscripted with -.B @ -or -.BR * , -the pattern removal operation is applied to each member of the -array in turn, and the expansion is the resultant list. -.TP -${\fIparameter\fP\fB/\fP\fIpattern\fP\fB/\fP\fIstring\fP} -\fBPattern substitution\fP. -The \fIpattern\fP is expanded to produce a pattern just as in -pathname expansion. -\fIParameter\fP is expanded and the longest match of \fIpattern\fP -against its value is replaced with \fIstring\fP. -If \fIpattern\fP begins with \fB/\fP, all matches of \fIpattern\fP are -replaced with \fIstring\fP. Normally only the first match is replaced. -If \fIpattern\fP begins with \fB#\fP, it must match at the beginning -of the expanded value of \fIparameter\fP. -If \fIpattern\fP begins with \fB%\fP, it must match at the end -of the expanded value of \fIparameter\fP. -If \fIstring\fP is null, matches of \fIpattern\fP are deleted -and the \fB/\fP following \fIpattern\fP may be omitted. -If -.I parameter -is -.B @ -or -.BR * , -the substitution operation is applied to each positional -parameter in turn, and the expansion is the resultant list. -If -.I parameter -is an array variable subscripted with -.B @ -or -.BR * , -the substitution operation is applied to each member of the -array in turn, and the expansion is the resultant list. -.TP -${\fIparameter\fP\fB^\fP\fIpattern\fP} -.PD 0 -.TP -${\fIparameter\fP\fB^^\fP\fIpattern\fP} -.TP -${\fIparameter\fP\fB,\fP\fIpattern\fP} -.TP -${\fIparameter\fP\fB,,\fP\fIpattern\fP} -.PD -\fBCase modification\fP. -This expansion modifies the case of alphabetic characters in \fIparameter\fP. -The \fIpattern\fP is expanded to produce a pattern just as in -pathname expansion. -Each character in the expanded value of \fIparameter\fP is tested against -\fIpattern\fP, and, if it matches the pattern, its case is converted. -The pattern should not attempt to match more than one character. -The \fB^\fP operator converts lowercase letters matching \fIpattern\fP -to uppercase; the \fB,\fP operator converts matching uppercase letters -to lowercase. -The \fB^^\fP and \fB,,\fP expansions convert each matched character in the -expanded value; the \fB^\fP and \fB,\fP expansions match and convert only -the first character in the expanded value. -If \fIpattern\fP is omitted, it is treated like a \fB?\fP, which matches -every character. -If -.I parameter -is -.B @ -or -.BR * , -the case modification operation is applied to each positional -parameter in turn, and the expansion is the resultant list. -If -.I parameter -is an array variable subscripted with -.B @ -or -.BR * , -the case modification operation is applied to each member of the -array in turn, and the expansion is the resultant list. -.SS Command Substitution -.PP -\fICommand substitution\fP allows the output of a command to replace -the command name. There are two forms: -.RS -.PP -\fB$(\fP\fIcommand\fP\|\fB)\fP -.RE -or -.RS -\fB\`\fP\fIcommand\fP\fB\`\fP -.RE -.PP -.B Bash -performs the expansion by executing \fIcommand\fP and -replacing the command substitution with the standard output of the -command, with any trailing newlines deleted. -Embedded newlines are not deleted, but they may be removed during -word splitting. -The command substitution \fB$(cat \fIfile\fP)\fR can be replaced by -the equivalent but faster \fB$(< \fIfile\fP)\fR. -.PP -When the old-style backquote form of substitution is used, -backslash retains its literal meaning except when followed by -.BR $ , -.BR \` , -or -.BR \e . -The first backquote not preceded by a backslash terminates the -command substitution. -When using the $(\^\fIcommand\fP\|) form, all characters between the -parentheses make up the command; none are treated specially. -.PP -Command substitutions may be nested. To nest when using the backquoted form, -escape the inner backquotes with backslashes. -.PP -If the substitution appears within double quotes, word splitting and -pathname expansion are not performed on the results. -.SS Arithmetic Expansion -.PP -Arithmetic expansion allows the evaluation of an arithmetic expression -and the substitution of the result. The format for arithmetic expansion is: -.RS -.PP -\fB$((\fP\fIexpression\fP\fB))\fP -.RE -.PP -The -.I expression -is treated as if it were within double quotes, but a double quote -inside the parentheses is not treated specially. -All tokens in the expression undergo parameter expansion, string -expansion, command substitution, and quote removal. -Arithmetic expansions may be nested. -.PP -The evaluation is performed according to the rules listed below under -.SM -.BR "ARITHMETIC EVALUATION" . -If -.I expression -is invalid, -.B bash -prints a message indicating failure and no substitution occurs. -.SS Process Substitution -.PP -\fIProcess substitution\fP is supported on systems that support named -pipes (\fIFIFOs\fP) or the \fB/dev/fd\fP method of naming open files. -It takes the form of -\fB<(\fP\fIlist\^\fP\fB)\fP -or -\fB>(\fP\fIlist\^\fP\fB)\fP. -The process \fIlist\fP is run with its input or output connected to a -\fIFIFO\fP or some file in \fB/dev/fd\fP. The name of this file is -passed as an argument to the current command as the result of the -expansion. If the \fB>(\fP\fIlist\^\fP\fB)\fP form is used, writing to -the file will provide input for \fIlist\fP. If the -\fB<(\fP\fIlist\^\fP\fB)\fP form is used, the file passed as an -argument should be read to obtain the output of \fIlist\fP. -.PP -When available, process substitution is performed -simultaneously with parameter and variable expansion, -command substitution, -and arithmetic expansion. -.SS Word Splitting -.PP -The shell scans the results of -parameter expansion, -command substitution, -and -arithmetic expansion -that did not occur within double quotes for -.IR "word splitting" . -.PP -The shell treats each character of -.SM -.B IFS -as a delimiter, and splits the results of the other -expansions into words on these characters. If -.SM -.B IFS -is unset, or its -value is exactly -.BR , -the default, then -sequences of -.BR , -.BR , -and -.B -at the beginning and end of the results of the previous -expansions are ignored, and -any sequence of -.SM -.B IFS -characters not at the beginning or end serves to delimit words. -If -.SM -.B IFS -has a value other than the default, then sequences of -the whitespace characters -.B space -and -.B tab -are ignored at the beginning and end of the -word, as long as the whitespace character is in the -value of -.SM -.BR IFS -(an -.SM -.B IFS -whitespace character). -Any character in -.SM -.B IFS -that is not -.SM -.B IFS -whitespace, along with any adjacent -.SM -.B IFS -whitespace characters, delimits a field. -A sequence of -.SM -.B IFS -whitespace characters is also treated as a delimiter. -If the value of -.SM -.B IFS -is null, no word splitting occurs. -.PP -Explicit null arguments (\^\f3"\^"\fP or \^\f3\(aq\^\(aq\fP\^) are retained. -Unquoted implicit null arguments, resulting from the expansion of -parameters that have no values, are removed. -If a parameter with no value is expanded within double quotes, a -null argument results and is retained. -.PP -Note that if no expansion occurs, no splitting -is performed. -.SS Pathname Expansion -.PP -After word splitting, -unless the -.B \-f -option has been set, -.B bash -scans each word for the characters -.BR * , -.BR ? , -and -.BR [ . -If one of these characters appears, then the word is -regarded as a -.IR pattern , -and replaced with an alphabetically sorted list of -filenames matching the pattern -(see -.SM -.B "Pattern Matching" -below). -If no matching filenames are found, -and the shell option -.B nullglob -is not enabled, the word is left unchanged. -If the -.B nullglob -option is set, and no matches are found, -the word is removed. -If the -.B failglob -shell option is set, and no matches are found, an error message -is printed and the command is not executed. -If the shell option -.B nocaseglob -is enabled, the match is performed without regard to the case -of alphabetic characters. -When a pattern is used for pathname expansion, -the character -.B ``.'' -at the start of a name or immediately following a slash -must be matched explicitly, unless the shell option -.B dotglob -is set. -When matching a pathname, the slash character must always be -matched explicitly. -In other cases, the -.B ``.'' -character is not treated specially. -See the description of -.B shopt -below under -.SM -.B SHELL BUILTIN COMMANDS -for a description of the -.BR nocaseglob , -.BR nullglob , -.BR failglob , -and -.B dotglob -shell options. -.PP -The -.SM -.B GLOBIGNORE -shell variable may be used to restrict the set of filenames matching a -.IR pattern . -If -.SM -.B GLOBIGNORE -is set, each matching filename that also matches one of the patterns in -.SM -.B GLOBIGNORE -is removed from the list of matches. -The filenames -.B ``.'' -and -.B ``..'' -are always ignored when -.SM -.B GLOBIGNORE -is set and not null. However, setting -.SM -.B GLOBIGNORE -to a non-null value has the effect of enabling the -.B dotglob -shell option, so all other filenames beginning with a -.B ``.'' -will match. -To get the old behavior of ignoring filenames beginning with a -.BR ``.'' , -make -.B ``.*'' -one of the patterns in -.SM -.BR GLOBIGNORE . -The -.B dotglob -option is disabled when -.SM -.B GLOBIGNORE -is unset. -.PP -\fBPattern Matching\fP -.PP -Any character that appears in a pattern, other than the special pattern -characters described below, matches itself. The NUL character may not -occur in a pattern. A backslash escapes the following character; the -escaping backslash is discarded when matching. -The special pattern characters must be quoted if -they are to be matched literally. -.PP -The special pattern characters have the following meanings: -.PP -.PD 0 -.RS -.TP -.B * -Matches any string, including the null string. -When the \fBglobstar\fP shell option is enabled, and \fB*\fP is used in -a pathname expansion context, two adjacent \fB*\fPs used as a single -pattern will match all files and zero or more directories and -subdirectories. -If followed by a \fB/\fP, two adjacent \fB*\fPs will match only directories -and subdirectories. -.TP -.B ? -Matches any single character. -.TP -.B [...] -Matches any one of the enclosed characters. A pair of characters -separated by a hyphen denotes a -\fIrange expression\fP; -any character that sorts between those two characters, inclusive, -using the current locale's collating sequence and character set, -is matched. If the first character following the -.B [ -is a -.B ! -or a -.B ^ -then any character not enclosed is matched. -The sorting order of characters in range expressions is determined by -the current locale and the values of the -.SM -.B LC_COLLATE -or -.SM -.B LC_ALL -shell variables, if set. -To obtain the traditional interpretation of range expressions, where -.B [a\-d] -is equivalent to -.BR [abcd] , -set value of the -.B LC_ALL -shell variable to -.BR C , -or enable the -.B globasciiranges -shell option. -A -.B \- -may be matched by including it as the first or last character -in the set. -A -.B ] -may be matched by including it as the first character -in the set. -.br -.if t .sp 0.5 -.if n .sp 1 -Within -.B [ -and -.BR ] , -\fIcharacter classes\fP can be specified using the syntax -\fB[:\fP\fIclass\fP\fB:]\fP, where \fIclass\fP is one of the -following classes defined in the POSIX standard: -.PP -.RS -.B -.if n alnum alpha ascii blank cntrl digit graph lower print punct space upper word xdigit -.if t alnum alpha ascii blank cntrl digit graph lower print punct space upper word xdigit -.br -A character class matches any character belonging to that class. -The \fBword\fP character class matches letters, digits, and the character _. -.br -.if t .sp 0.5 -.if n .sp 1 -Within -.B [ -and -.BR ] , -an \fIequivalence class\fP can be specified using the syntax -\fB[=\fP\fIc\fP\fB=]\fP, which matches all characters with the -same collation weight (as defined by the current locale) as -the character \fIc\fP. -.br -.if t .sp 0.5 -.if n .sp 1 -Within -.B [ -and -.BR ] , -the syntax \fB[.\fP\fIsymbol\fP\fB.]\fP matches the collating symbol -\fIsymbol\fP. -.RE -.RE -.PD -.PP -If the \fBextglob\fP shell option is enabled using the \fBshopt\fP -builtin, several extended pattern matching operators are recognized. -In the following description, a \fIpattern-list\fP is a list of one -or more patterns separated by a \fB|\fP. -Composite patterns may be formed using one or more of the following -sub-patterns: -.sp 1 -.PD 0 -.RS -.TP -\fB?(\fP\^\fIpattern-list\^\fP\fB)\fP -Matches zero or one occurrence of the given patterns -.TP -\fB*(\fP\^\fIpattern-list\^\fP\fB)\fP -Matches zero or more occurrences of the given patterns -.TP -\fB+(\fP\^\fIpattern-list\^\fP\fB)\fP -Matches one or more occurrences of the given patterns -.TP -\fB@(\fP\^\fIpattern-list\^\fP\fB)\fP -Matches one of the given patterns -.TP -\fB!(\fP\^\fIpattern-list\^\fP\fB)\fP -Matches anything except one of the given patterns -.RE -.PD -.SS Quote Removal -.PP -After the preceding expansions, all unquoted occurrences of the -characters -.BR \e , -.BR \(aq , -and \^\f3"\fP\^ that did not result from one of the above -expansions are removed. -.SH REDIRECTION -Before a command is executed, its input and output -may be -.I redirected -using a special notation interpreted by the shell. -Redirection allows commands' file handles to be -duplicated, opened, closed, -made to refer to different files, -and can change the files the command reads from and writes to. -Redirection may also be used to modify file handles in the -current shell execution environment. -The following redirection -operators may precede or appear anywhere within a -.I simple command -or may follow a -.IR command . -Redirections are processed in the order they appear, from -left to right. -.PP -Each redirection that may be preceded by a file descriptor number -may instead be preceded by a word of the form {\fIvarname\fP}. -In this case, for each redirection operator except ->&- and <&-, the shell will allocate a file descriptor greater -than or equal to 10 and assign it to \fIvarname\fP. -If >&- or <&- is preceded -by {\fIvarname\fP}, the value of \fIvarname\fP defines the file -descriptor to close. -.PP -In the following descriptions, if the file descriptor number is -omitted, and the first character of the redirection operator is -.BR < , -the redirection refers to the standard input (file descriptor -0). If the first character of the redirection operator is -.BR > , -the redirection refers to the standard output (file descriptor -1). -.PP -The word following the redirection operator in the following -descriptions, unless otherwise noted, is subjected to -brace expansion, tilde expansion, parameter and variable expansion, -command substitution, arithmetic expansion, quote removal, -pathname expansion, and word splitting. -If it expands to more than one word, -.B bash -reports an error. -.PP -Note that the order of redirections is significant. For example, -the command -.RS -.PP -ls \fB>\fP dirlist 2\fB>&\fP1 -.RE -.PP -directs both standard output and standard error to the file -.IR dirlist , -while the command -.RS -.PP -ls 2\fB>&\fP1 \fB>\fP dirlist -.RE -.PP -directs only the standard output to file -.IR dirlist , -because the standard error was duplicated from the standard output -before the standard output was redirected to -.IR dirlist . -.PP -\fBBash\fP handles several filenames specially when they are used in -redirections, as described in the following table: -.RS -.PP -.PD 0 -.TP -.B /dev/fd/\fIfd\fP -If \fIfd\fP is a valid integer, file descriptor \fIfd\fP is duplicated. -.TP -.B /dev/stdin -File descriptor 0 is duplicated. -.TP -.B /dev/stdout -File descriptor 1 is duplicated. -.TP -.B /dev/stderr -File descriptor 2 is duplicated. -.TP -.B /dev/tcp/\fIhost\fP/\fIport\fP -If \fIhost\fP is a valid hostname or Internet address, and \fIport\fP -is an integer port number or service name, \fBbash\fP attempts to open -a TCP connection to the corresponding socket. -.TP -.B /dev/udp/\fIhost\fP/\fIport\fP -If \fIhost\fP is a valid hostname or Internet address, and \fIport\fP -is an integer port number or service name, \fBbash\fP attempts to open -a UDP connection to the corresponding socket. -.PD -.RE -.PP -A failure to open or create a file causes the redirection to fail. -.PP -Redirections using file descriptors greater than 9 should be used with -care, as they may conflict with file descriptors the shell uses -internally. -.SS Redirecting Input -.PP -Redirection of input causes the file whose name results from -the expansion of -.I word -to be opened for reading on file descriptor -.IR n , -or the standard input (file descriptor 0) if -.I n -is not specified. -.PP -The general format for redirecting input is: -.RS -.PP -[\fIn\fP]\fB<\fP\fIword\fP -.RE -.SS Redirecting Output -.PP -Redirection of output causes the file whose name results from -the expansion of -.I word -to be opened for writing on file descriptor -.IR n , -or the standard output (file descriptor 1) if -.I n -is not specified. If the file does not exist it is created; -if it does exist it is truncated to zero size. -.PP -The general format for redirecting output is: -.RS -.PP -[\fIn\fP]\fB>\fP\fIword\fP -.RE -.PP -If the redirection operator is -.BR > , -and the -.B noclobber -option to the -.B set -builtin has been enabled, the redirection will fail if the file -whose name results from the expansion of \fIword\fP exists and is -a regular file. -If the redirection operator is -.BR >| , -or the redirection operator is -.B > -and the -.B noclobber -option to the -.B set -builtin command is not enabled, the redirection is attempted even -if the file named by \fIword\fP exists. -.SS Appending Redirected Output -.PP -Redirection of output in this fashion -causes the file whose name results from -the expansion of -.I word -to be opened for appending on file descriptor -.IR n , -or the standard output (file descriptor 1) if -.I n -is not specified. If the file does not exist it is created. -.PP -The general format for appending output is: -.RS -.PP -[\fIn\fP]\fB>>\fP\fIword\fP -.RE -.PP -.SS Redirecting Standard Output and Standard Error -.PP -This construct allows both the -standard output (file descriptor 1) and -the standard error output (file descriptor 2) -to be redirected to the file whose name is the -expansion of -.IR word . -.PP -There are two formats for redirecting standard output and -standard error: -.RS -.PP -\fB&>\fP\fIword\fP -.RE -and -.RS -\fB>&\fP\fIword\fP -.RE -.PP -Of the two forms, the first is preferred. -This is semantically equivalent to -.RS -.PP -\fB>\fP\fIword\fP 2\fB>&\fP1 -.RE -.PP -When using the second form, \fIword\fP may not expand to a number or -\fB\-\fP. If it does, other redirection operators apply -(see \fBDuplicating File Descriptors\fP below) for compatibility -reasons. -.SS Appending Standard Output and Standard Error -.PP -This construct allows both the -standard output (file descriptor 1) and -the standard error output (file descriptor 2) -to be appended to the file whose name is the -expansion of -.IR word . -.PP -The format for appending standard output and standard error is: -.RS -.PP -\fB&>>\fP\fIword\fP -.RE -.PP -This is semantically equivalent to -.RS -.PP -\fB>>\fP\fIword\fP 2\fB>&\fP1 -.RE -.PP -(see \fBDuplicating File Descriptors\fP below). -.SS Here Documents -.PP -This type of redirection instructs the shell to read input from the -current source until a line containing only -.I delimiter -(with no trailing blanks) -is seen. All of -the lines read up to that point are then used as the standard -input for a command. -.PP -The format of here-documents is: -.RS -.PP -.nf -\fB<<\fP[\fB\-\fP]\fIword\fP - \fIhere-document\fP -\fIdelimiter\fP -.fi -.RE -.PP -No parameter and variable expansion, command substitution, -arithmetic expansion, or pathname expansion is performed on -.IR word . -If any characters in -.I word -are quoted, the -.I delimiter -is the result of quote removal on -.IR word , -and the lines in the here-document are not expanded. -If \fIword\fP is unquoted, -all lines of the here-document are subjected to parameter expansion, -command substitution, and arithmetic expansion. In the latter -case, the character sequence -.B \e -is ignored, and -.B \e -must be used to quote the characters -.BR \e , -.BR $ , -and -.BR \` . -.PP -If the redirection operator is -.BR <<\- , -then all leading tab characters are stripped from input lines and the -line containing -.IR delimiter . -This allows -here-documents within shell scripts to be indented in a -natural fashion. -.SS "Here Strings" -A variant of here documents, the format is: -.RS -.PP -.nf -\fB<<<\fP\fIword\fP -.fi -.RE -.PP -The \fIword\fP undergoes -brace expansion, tilde expansion, parameter and variable expansion, -command substitution, arithmetic expansion, and quote removal. -Pathname expansion word splitting are not performed. -The result is supplied as a single string to the command on its -standard input. -.SS "Duplicating File Descriptors" -.PP -The redirection operator -.RS -.PP -[\fIn\fP]\fB<&\fP\fIword\fP -.RE -.PP -is used to duplicate input file descriptors. -If -.I word -expands to one or more digits, the file descriptor denoted by -.I n -is made to be a copy of that file descriptor. -If the digits in -.I word -do not specify a file descriptor open for input, a redirection error occurs. -If -.I word -evaluates to -.BR \- , -file descriptor -.I n -is closed. If -.I n -is not specified, the standard input (file descriptor 0) is used. -.PP -The operator -.RS -.PP -[\fIn\fP]\fB>&\fP\fIword\fP -.RE -.PP -is used similarly to duplicate output file descriptors. If -.I n -is not specified, the standard output (file descriptor 1) is used. -If the digits in -.I word -do not specify a file descriptor open for output, a redirection error occurs. -If -.I word -evaluates to -.BR \- , -file descriptor -.I n -is closed. -As a special case, if \fIn\fP is omitted, and \fIword\fP does not -expand to one or more digits or \fB\-\fP, the standard output and standard -error are redirected as described previously. -.SS "Moving File Descriptors" -.PP -The redirection operator -.RS -.PP -[\fIn\fP]\fB<&\fP\fIdigit\fP\fB\-\fP -.RE -.PP -moves the file descriptor \fIdigit\fP to file descriptor -.IR n , -or the standard input (file descriptor 0) if \fIn\fP is not specified. -\fIdigit\fP is closed after being duplicated to \fIn\fP. -.PP -Similarly, the redirection operator -.RS -.PP -[\fIn\fP]\fB>&\fP\fIdigit\fP\fB\-\fP -.RE -.PP -moves the file descriptor \fIdigit\fP to file descriptor -.IR n , -or the standard output (file descriptor 1) if \fIn\fP is not specified. -.SS "Opening File Descriptors for Reading and Writing" -.PP -The redirection operator -.RS -.PP -[\fIn\fP]\fB<>\fP\fIword\fP -.RE -.PP -causes the file whose name is the expansion of -.I word -to be opened for both reading and writing on file descriptor -.IR n , -or on file descriptor 0 if -.I n -is not specified. If the file does not exist, it is created. -.SH ALIASES -\fIAliases\fP allow a string to be substituted for a word when it is used -as the first word of a simple command. -The shell maintains a list of aliases that may be set and unset with the -.B alias -and -.B unalias -builtin commands (see -.SM -.B SHELL BUILTIN COMMANDS -below). -The first word of each simple command, if unquoted, -is checked to see if it has an -alias. If so, that word is replaced by the text of the alias. -The characters \fB/\fP, \fB$\fP, \fB\`\fP, and \fB=\fP and -any of the shell \fImetacharacters\fP or quoting characters -listed above may not appear in an alias name. -The replacement text may contain any valid shell input, -including shell metacharacters. -The first word of the replacement text is tested -for aliases, but a word that is identical to an alias being expanded -is not expanded a second time. -This means that one may alias -.B ls -to -.BR "ls \-F" , -for instance, and -.B bash -does not try to recursively expand the replacement text. -If the last character of the alias value is a -.IR blank , -then the next command -word following the alias is also checked for alias expansion. -.PP -Aliases are created and listed with the -.B alias -command, and removed with the -.B unalias -command. -.PP -There is no mechanism for using arguments in the replacement text. -If arguments are needed, a shell function should be used (see -.SM -.B FUNCTIONS -below). -.PP -Aliases are not expanded when the shell is not interactive, unless -the -.B expand_aliases -shell option is set using -.B shopt -(see the description of -.B shopt -under -.SM -\fBSHELL BUILTIN COMMANDS\fP -below). -.PP -The rules concerning the definition and use of aliases are -somewhat confusing. -.B Bash -always reads at least one complete line -of input before executing any -of the commands on that line. Aliases are expanded when a -command is read, not when it is executed. Therefore, an -alias definition appearing on the same line as another -command does not take effect until the next line of input is read. -The commands following the alias definition -on that line are not affected by the new alias. -This behavior is also an issue when functions are executed. -Aliases are expanded when a function definition is read, -not when the function is executed, because a function definition -is itself a compound command. As a consequence, aliases -defined in a function are not available until after that -function is executed. To be safe, always put -alias definitions on a separate line, and do not use -.B alias -in compound commands. -.PP -For almost every purpose, aliases are superseded by -shell functions. -.SH FUNCTIONS -A shell function, defined as described above under -.SM -.BR "SHELL GRAMMAR" , -stores a series of commands for later execution. -When the name of a shell function is used as a simple command name, -the list of commands associated with that function name is executed. -Functions are executed in the context of the -current shell; no new process is created to interpret -them (contrast this with the execution of a shell script). -When a function is executed, the arguments to the -function become the positional parameters -during its execution. -The special parameter -.B # -is updated to reflect the change. Special parameter \fB0\fP -is unchanged. -The first element of the -.SM -.B FUNCNAME -variable is set to the name of the function while the function -is executing. -.PP -All other aspects of the shell execution -environment are identical between a function and its caller -with these exceptions: the -.SM -.B DEBUG -and -.B RETURN -traps (see the description of the -.B trap -builtin under -.SM -.B SHELL BUILTIN COMMANDS -below) are not inherited unless the function has been given the -\fBtrace\fP attribute (see the description of the -.SM -.B declare -builtin below) or the -\fB\-o functrace\fP shell option has been enabled with -the \fBset\fP builtin -(in which case all functions inherit the \fBDEBUG\fP and \fBRETURN\fP traps), -and the -.SM -.B ERR -trap is not inherited unless the \fB\-o errtrace\fP shell option has -been enabled. -.PP -Variables local to the function may be declared with the -.B local -builtin command. Ordinarily, variables and their values -are shared between the function and its caller. -.PP -The \fBFUNCNEST\fP variable, if set to a numeric value greater -than 0, defines a maximum function nesting level. Function -invocations that exceed the limit cause the entire command to -abort. -.PP -If the builtin command -.B return -is executed in a function, the function completes and -execution resumes with the next command after the function -call. -Any command associated with the \fBRETURN\fP trap is executed -before execution resumes. -When a function completes, the values of the -positional parameters and the special parameter -.B # -are restored to the values they had prior to the function's -execution. -.PP -Function names and definitions may be listed with the -.B \-f -option to the -.B declare -or -.B typeset -builtin commands. The -.B \-F -option to -.B declare -or -.B typeset -will list the function names only -(and optionally the source file and line number, if the \fBextdebug\fP -shell option is enabled). -Functions may be exported so that subshells -automatically have them defined with the -.B \-f -option to the -.B export -builtin. -A function definition may be deleted using the \fB\-f\fP option to -the -.B unset -builtin. -Note that shell functions and variables with the same name may result -in multiple identically-named entries in the environment passed to the -shell's children. -Care should be taken in cases where this may cause a problem. -.PP -Functions may be recursive. -The \fBFUNCNEST\fP variable may be used to limit the depth of the -function call stack and restrict the number of function invocations. -By default, no limit is imposed on the number of recursive calls. -.SH "ARITHMETIC EVALUATION" -The shell allows arithmetic expressions to be evaluated, under -certain circumstances (see the \fBlet\fP and \fBdeclare\fP builtin -commands and \fBArithmetic Expansion\fP). -Evaluation is done in fixed-width integers with no check for overflow, -though division by 0 is trapped and flagged as an error. -The operators and their precedence, associativity, and values -are the same as in the C language. -The following list of operators is grouped into levels of -equal-precedence operators. -The levels are listed in order of decreasing precedence. -.PP -.PD 0 -.TP -.B \fIid\fP++ \fIid\fP\-\- -variable post-increment and post-decrement -.TP -.B ++\fIid\fP \-\-\fIid\fP -variable pre-increment and pre-decrement -.TP -.B \- + -unary minus and plus -.TP -.B ! ~ -logical and bitwise negation -.TP -.B ** -exponentiation -.TP -.B * / % -multiplication, division, remainder -.TP -.B + \- -addition, subtraction -.TP -.B << >> -left and right bitwise shifts -.TP -.B <= >= < > -comparison -.TP -.B == != -equality and inequality -.TP -.B & -bitwise AND -.TP -.B ^ -bitwise exclusive OR -.TP -.B | -bitwise OR -.TP -.B && -logical AND -.TP -.B || -logical OR -.TP -.B \fIexpr\fP?\fIexpr\fP:\fIexpr\fP -conditional operator -.TP -.B = *= /= %= += \-= <<= >>= &= ^= |= -assignment -.TP -.B \fIexpr1\fP , \fIexpr2\fP -comma -.PD -.PP -Shell variables are allowed as operands; parameter expansion is -performed before the expression is evaluated. -Within an expression, shell variables may also be referenced by name -without using the parameter expansion syntax. -A shell variable that is null or unset evaluates to 0 when referenced -by name without using the parameter expansion syntax. -The value of a variable is evaluated as an arithmetic expression -when it is referenced, or when a variable which has been given the -\fIinteger\fP attribute using \fBdeclare -i\fP is assigned a value. -A null value evaluates to 0. -A shell variable need not have its \fIinteger\fP attribute -turned on to be used in an expression. -.PP -Constants with a leading 0 are interpreted as octal numbers. -A leading 0x or 0X denotes hexadecimal. -Otherwise, numbers take the form [\fIbase#\fP]n, where the optional \fIbase\fP -is a decimal number between 2 and 64 representing the arithmetic -base, and \fIn\fP is a number in that base. -If \fIbase#\fP is omitted, then base 10 is used. -When specifying \fIn\fP, -the digits greater< than 9 are represented by the lowercase letters, -the uppercase letters, @, and _, in that order. -If \fIbase\fP is less than or equal to 36, lowercase and uppercase -letters may be used interchangeably to represent numbers between 10 -and 35. -.PP -Operators are evaluated in order of precedence. Sub-expressions in -parentheses are evaluated first and may override the precedence -rules above. -.SH "CONDITIONAL EXPRESSIONS" -Conditional expressions are used by the \fB[[\fP compound command and -the \fBtest\fP and \fB[\fP builtin commands to test file attributes -and perform string and arithmetic comparisons. -Expressions are formed from the following unary or binary primaries. -If any \fIfile\fP argument to one of the primaries is of the form -\fI/dev/fd/n\fP, then file descriptor \fIn\fP is checked. -If the \fIfile\fP argument to one of the primaries is one of -\fI/dev/stdin\fP, \fI/dev/stdout\fP, or \fI/dev/stderr\fP, file -descriptor 0, 1, or 2, respectively, is checked. -.PP -Unless otherwise specified, primaries that operate on files follow symbolic -links and operate on the target of the link, rather than the link itself. -.if t .sp 0.5 -.if n .sp 1 -When used with \fB[[\fP, the \fB<\fP and \fB>\fP operators sort -lexicographically using the current locale. -The \fBtest\fP command sorts using ASCII ordering. -.sp 1 -.PD 0 -.TP -.B \-a \fIfile\fP -True if \fIfile\fP exists. -.TP -.B \-b \fIfile\fP -True if \fIfile\fP exists and is a block special file. -.TP -.B \-c \fIfile\fP -True if \fIfile\fP exists and is a character special file. -.TP -.B \-d \fIfile\fP -True if \fIfile\fP exists and is a directory. -.TP -.B \-e \fIfile\fP -True if \fIfile\fP exists. -.TP -.B \-f \fIfile\fP -True if \fIfile\fP exists and is a regular file. -.TP -.B \-g \fIfile\fP -True if \fIfile\fP exists and is set-group-id. -.TP -.B \-h \fIfile\fP -True if \fIfile\fP exists and is a symbolic link. -.TP -.B \-k \fIfile\fP -True if \fIfile\fP exists and its ``sticky'' bit is set. -.TP -.B \-p \fIfile\fP -True if \fIfile\fP exists and is a named pipe (FIFO). -.TP -.B \-r \fIfile\fP -True if \fIfile\fP exists and is readable. -.TP -.B \-s \fIfile\fP -True if \fIfile\fP exists and has a size greater than zero. -.TP -.B \-t \fIfd\fP -True if file descriptor -.I fd -is open and refers to a terminal. -.TP -.B \-u \fIfile\fP -True if \fIfile\fP exists and its set-user-id bit is set. -.TP -.B \-w \fIfile\fP -True if \fIfile\fP exists and is writable. -.TP -.B \-x \fIfile\fP -True if \fIfile\fP exists and is executable. -.TP -.B \-G \fIfile\fP -True if \fIfile\fP exists and is owned by the effective group id. -.TP -.B \-L \fIfile\fP -True if \fIfile\fP exists and is a symbolic link. -.TP -.B \-N \fIfile\fP -True if \fIfile\fP exists and has been modified since it was last read. -.TP -.B \-O \fIfile\fP -True if \fIfile\fP exists and is owned by the effective user id. -.TP -.B \-S \fIfile\fP -True if \fIfile\fP exists and is a socket. -.TP -\fIfile1\fP \fB\-ef\fP \fIfile2\fP -True if \fIfile1\fP and \fIfile2\fP refer to the same device and -inode numbers. -.TP -\fIfile1\fP \-\fBnt\fP \fIfile2\fP -True if \fIfile1\fP is newer (according to modification date) than \fIfile2\fP, -or if \fIfile1\fP exists and \fPfile2\fP does not. -.TP -\fIfile1\fP \-\fBot\fP \fIfile2\fP -True if \fIfile1\fP is older than \fIfile2\fP, or if \fIfile2\fP exists -and \fIfile1\fP does not. -.TP -.B \-o \fIoptname\fP -True if the shell option -.I optname -is enabled. -See the list of options under the description of the -.B \-o -option to the -.B set -builtin below. -.TP -.B \-v \fIvarname\fP -True if the shell variable -.I varname -is set (has been assigned a value). -.TP -.B \-z \fIstring\fP -True if the length of \fIstring\fP is zero. -.TP -\fIstring\fP -.PD 0 -.TP -.B \-n \fIstring\fP -.PD -True if the length of -.I string -is non-zero. -.TP -\fIstring1\fP \fB==\fP \fIstring2\fP -.PD 0 -.TP -\fIstring1\fP \fB=\fP \fIstring2\fP -.PD -True if the strings are equal. \fB=\fP should be used -with the \fBtest\fP command for POSIX conformance. -.TP -\fIstring1\fP \fB!=\fP \fIstring2\fP -True if the strings are not equal. -.TP -\fIstring1\fP \fB<\fP \fIstring2\fP -True if \fIstring1\fP sorts before \fIstring2\fP lexicographically. -.TP -\fIstring1\fP \fB>\fP \fIstring2\fP -True if \fIstring1\fP sorts after \fIstring2\fP lexicographically. -.TP -.I \fIarg1\fP \fBOP\fP \fIarg2\fP -.SM -.B OP -is one of -.BR \-eq , -.BR \-ne , -.BR \-lt , -.BR \-le , -.BR \-gt , -or -.BR \-ge . -These arithmetic binary operators return true if \fIarg1\fP -is equal to, not equal to, less than, less than or equal to, -greater than, or greater than or equal to \fIarg2\fP, respectively. -.I Arg1 -and -.I arg2 -may be positive or negative integers. -.PD -.SH "SIMPLE COMMAND EXPANSION" -When a simple command is executed, the shell performs the following -expansions, assignments, and redirections, from left to right. -.IP 1. -The words that the parser has marked as variable assignments (those -preceding the command name) and redirections are saved for later -processing. -.IP 2. -The words that are not variable assignments or redirections are -expanded. If any words remain after expansion, the first word -is taken to be the name of the command and the remaining words are -the arguments. -.IP 3. -Redirections are performed as described above under -.SM -.BR REDIRECTION . -.IP 4. -The text after the \fB=\fP in each variable assignment undergoes tilde -expansion, parameter expansion, command substitution, arithmetic expansion, -and quote removal before being assigned to the variable. -.PP -If no command name results, the variable assignments affect the current -shell environment. Otherwise, the variables are added to the environment -of the executed command and do not affect the current shell environment. -If any of the assignments attempts to assign a value to a readonly variable, -an error occurs, and the command exits with a non-zero status. -.PP -If no command name results, redirections are performed, but do not -affect the current shell environment. A redirection error causes the -command to exit with a non-zero status. -.PP -If there is a command name left after expansion, execution proceeds as -described below. Otherwise, the command exits. If one of the expansions -contained a command substitution, the exit status of the command is -the exit status of the last command substitution performed. If there -were no command substitutions, the command exits with a status of zero. -.SH "COMMAND EXECUTION" -After a command has been split into words, if it results in a -simple command and an optional list of arguments, the following -actions are taken. -.PP -If the command name contains no slashes, the shell attempts to -locate it. If there exists a shell function by that name, that -function is invoked as described above in -.SM -.BR FUNCTIONS . -If the name does not match a function, the shell searches for -it in the list of shell builtins. If a match is found, that -builtin is invoked. -.PP -If the name is neither a shell function nor a builtin, -and contains no slashes, -.B bash -searches each element of the -.SM -.B PATH -for a directory containing an executable file by that name. -.B Bash -uses a hash table to remember the full pathnames of executable -files (see -.B hash -under -.SM -.B "SHELL BUILTIN COMMANDS" -below). -A full search of the directories in -.SM -.B PATH -is performed only if the command is not found in the hash table. -If the search is unsuccessful, the shell searches for a defined shell -function named \fBcommand_not_found_handle\fP. -If that function exists, it is invoked with the original command and -the original command's arguments as its arguments, and the function's -exit status becomes the exit status of the shell. -If that function is not defined, the shell prints an error -message and returns an exit status of 127. -.PP -If the search is successful, or if the command name contains -one or more slashes, the shell executes the named program in a -separate execution environment. -Argument 0 is set to the name given, and the remaining arguments -to the command are set to the arguments given, if any. -.PP -If this execution fails because the file is not in executable -format, and the file is not a directory, it is assumed to be -a \fIshell script\fP, a file -containing shell commands. A subshell is spawned to execute -it. This subshell reinitializes itself, so -that the effect is as if a new shell had been invoked -to handle the script, with the exception that the locations of -commands remembered by the parent (see -.B hash -below under -.SM -\fBSHELL BUILTIN COMMANDS\fP) -are retained by the child. -.PP -If the program is a file beginning with -.BR #! , -the remainder of the first line specifies an interpreter -for the program. The shell executes the -specified interpreter on operating systems that do not -handle this executable format themselves. The arguments to the -interpreter consist of a single optional argument following the -interpreter name on the first line of the program, followed -by the name of the program, followed by the command -arguments, if any. -.SH COMMAND EXECUTION ENVIRONMENT -The shell has an \fIexecution environment\fP, which consists of the -following: -.IP \(bu -open files inherited by the shell at invocation, as modified by -redirections supplied to the \fBexec\fP builtin -.IP \(bu -the current working directory as set by \fBcd\fP, \fBpushd\fP, or -\fBpopd\fP, or inherited by the shell at invocation -.IP \(bu -the file creation mode mask as set by \fBumask\fP or inherited from -the shell's parent -.IP \(bu -current traps set by \fBtrap\fP -.IP \(bu -shell parameters that are set by variable assignment or with \fBset\fP -or inherited from the shell's parent in the environment -.IP \(bu -shell functions defined during execution or inherited from the shell's -parent in the environment -.IP \(bu -options enabled at invocation (either by default or with command-line -arguments) or by \fBset\fP -.IP \(bu -options enabled by \fBshopt\fP -.IP \(bu -shell aliases defined with \fBalias\fP -.IP \(bu -various process IDs, including those of background jobs, the value -of \fB$$\fP, and the value of -.SM -.B PPID -.PP -When a simple command other than a builtin or shell function -is to be executed, it -is invoked in a separate execution environment that consists of -the following. Unless otherwise noted, the values are inherited -from the shell. -.if n .sp 1 -.IP \(bu -the shell's open files, plus any modifications and additions specified -by redirections to the command -.IP \(bu -the current working directory -.IP \(bu -the file creation mode mask -.IP \(bu -shell variables and functions marked for export, along with variables -exported for the command, passed in the environment -.IP \(bu -traps caught by the shell are reset to the values inherited from the -shell's parent, and traps ignored by the shell are ignored -.PP -A command invoked in this separate environment cannot affect the -shell's execution environment. -.PP -Command substitution, commands grouped with parentheses, -and asynchronous commands are invoked in a -subshell environment that is a duplicate of the shell environment, -except that traps caught by the shell are reset to the values -that the shell inherited from its parent at invocation. Builtin -commands that are invoked as part of a pipeline are also executed in a -subshell environment. Changes made to the subshell environment -cannot affect the shell's execution environment. -.PP -Subshells spawned to execute command substitutions inherit the value of -the \fB\-e\fP option from the parent shell. When not in \fIposix\fP mode, -\fBbash\fP clears the \fB\-e\fP option in such subshells. -.PP -If a command is followed by a \fB&\fP and job control is not active, the -default standard input for the command is the empty file \fI/dev/null\fP. -Otherwise, the invoked command inherits the file descriptors of the calling -shell as modified by redirections. -.SH ENVIRONMENT -When a program is invoked it is given an array of strings -called the -.IR environment . -This is a list of -\fIname\fP\-\fIvalue\fP pairs, of the form -.IR "name\fR=\fPvalue" . -.PP -The shell provides several ways to manipulate the environment. -On invocation, the shell scans its own environment and -creates a parameter for each name found, automatically marking -it for -.I export -to child processes. Executed commands inherit the environment. -The -.B export -and -.B declare \-x -commands allow parameters and functions to be added to and -deleted from the environment. If the value of a parameter -in the environment is modified, the new value becomes part -of the environment, replacing the old. The environment -inherited by any executed command consists of the shell's -initial environment, whose values may be modified in the shell, -less any pairs removed by the -.B unset -command, plus any additions via the -.B export -and -.B declare \-x -commands. -.PP -The environment for any -.I simple command -or function may be augmented temporarily by prefixing it with -parameter assignments, as described above in -.SM -.BR PARAMETERS . -These assignment statements affect only the environment seen -by that command. -.PP -If the -.B \-k -option is set (see the -.B set -builtin command below), then -.I all -parameter assignments are placed in the environment for a command, -not just those that precede the command name. -.PP -When -.B bash -invokes an external command, the variable -.B _ -is set to the full filename of the command and passed to that -command in its environment. -.SH "EXIT STATUS" -.PP -The exit status of an executed command is the value returned by the -\fIwaitpid\fP system call or equivalent function. Exit statuses -fall between 0 and 255, though, as explained below, the shell may -use values above 125 specially. Exit statuses from shell builtins and -compound commands are also limited to this range. Under certain -circumstances, the shell will use special values to indicate specific -failure modes. -.PP -For the shell's purposes, a command which exits with a -zero exit status has succeeded. An exit status of zero -indicates success. A non-zero exit status indicates failure. -When a command terminates on a fatal signal \fIN\fP, \fBbash\fP uses -the value of 128+\fIN\fP as the exit status. -.PP -If a command is not found, the child process created to -execute it returns a status of 127. If a command is found -but is not executable, the return status is 126. -.PP -If a command fails because of an error during expansion or redirection, -the exit status is greater than zero. -.PP -Shell builtin commands return a status of 0 (\fItrue\fP) if -successful, and non-zero (\fIfalse\fP) if an error occurs -while they execute. -All builtins return an exit status of 2 to indicate incorrect usage. -.PP -\fBBash\fP itself returns the exit status of the last command -executed, unless a syntax error occurs, in which case it exits -with a non-zero value. See also the \fBexit\fP builtin -command below. -.SH SIGNALS -When \fBbash\fP is interactive, in the absence of any traps, it ignores -.SM -.B SIGTERM -(so that \fBkill 0\fP does not kill an interactive shell), -and -.SM -.B SIGINT -is caught and handled (so that the \fBwait\fP builtin is interruptible). -In all cases, \fBbash\fP ignores -.SM -.BR SIGQUIT . -If job control is in effect, -.B bash -ignores -.SM -.BR SIGTTIN , -.SM -.BR SIGTTOU , -and -.SM -.BR SIGTSTP . -.PP -Non-builtin commands run by \fBbash\fP have signal handlers -set to the values inherited by the shell from its parent. -When job control is not in effect, asynchronous commands -ignore -.SM -.B SIGINT -and -.SM -.B SIGQUIT -in addition to these inherited handlers. -Commands run as a result of command substitution ignore the -keyboard-generated job control signals -.SM -.BR SIGTTIN , -.SM -.BR SIGTTOU , -and -.SM -.BR SIGTSTP . -.PP -The shell exits by default upon receipt of a -.SM -.BR SIGHUP . -Before exiting, an interactive shell resends the -.SM -.B SIGHUP -to all jobs, running or stopped. -Stopped jobs are sent -.SM -.B SIGCONT -to ensure that they receive the -.SM -.BR SIGHUP . -To prevent the shell from -sending the signal to a particular job, it should be removed from the -jobs table with the -.B disown -builtin (see -.SM -.B "SHELL BUILTIN COMMANDS" -below) or marked -to not receive -.SM -.B SIGHUP -using -.BR "disown \-h" . -.PP -If the -.B huponexit -shell option has been set with -.BR shopt , -.B bash -sends a -.SM -.B SIGHUP -to all jobs when an interactive login shell exits. -.PP -If \fBbash\fP is waiting for a command to complete and receives a signal -for which a trap has been set, the trap will not be executed until -the command completes. -When \fBbash\fP is waiting for an asynchronous command via the \fBwait\fP -builtin, the reception of a signal for which a trap has been set will -cause the \fBwait\fP builtin to return immediately with an exit status -greater than 128, immediately after which the trap is executed. -.SH "JOB CONTROL" -.I Job control -refers to the ability to selectively stop (\fIsuspend\fP) -the execution of processes and continue (\fIresume\fP) -their execution at a later point. A user typically employs -this facility via an interactive interface supplied jointly -by the operating system kernel's terminal driver and -.BR bash . -.PP -The shell associates a -.I job -with each pipeline. It keeps a table of currently executing -jobs, which may be listed with the -.B jobs -command. When -.B bash -starts a job asynchronously (in the -.IR background ), -it prints a line that looks like: -.RS -.PP -[1] 25647 -.RE -.PP -indicating that this job is job number 1 and that the process ID -of the last process in the pipeline associated with this job is 25647. -All of the processes in a single pipeline are members of the same job. -.B Bash -uses the -.I job -abstraction as the basis for job control. -.PP -To facilitate the implementation of the user interface to job -control, the operating system maintains the notion of a \fIcurrent terminal -process group ID\fP. Members of this process group (processes whose -process group ID is equal to the current terminal process group ID) -receive keyboard-generated signals such as -.SM -.BR SIGINT . -These processes are said to be in the -.IR foreground . -.I Background -processes are those whose process group ID differs from the terminal's; -such processes are immune to keyboard-generated signals. -Only foreground processes are allowed to read from or, if the -user so specifies with \f(CWstty tostop\fP, write to the -terminal. -Background processes which attempt to read from (write to when -\f(CWstty tostop\fP is in effect) the -terminal are sent a -.SM -.B SIGTTIN (SIGTTOU) -signal by the kernel's terminal driver, -which, unless caught, suspends the process. -.PP -If the operating system on which -.B bash -is running supports -job control, -.B bash -contains facilities to use it. -Typing the -.I suspend -character (typically -.BR ^Z , -Control-Z) while a process is running -causes that process to be stopped and returns control to -.BR bash . -Typing the -.I "delayed suspend" -character (typically -.BR ^Y , -Control-Y) causes the process to be stopped when it -attempts to read input from the terminal, and control to -be returned to -.BR bash . -The user may then manipulate the state of this job, using the -.B bg -command to continue it in the background, the -.B fg -command to continue it in the foreground, or -the -.B kill -command to kill it. A \fB^Z\fP takes effect immediately, -and has the additional side effect of causing pending output -and typeahead to be discarded. -.PP -There are a number of ways to refer to a job in the shell. -The character -.B % -introduces a job specification (\fIjobspec\fP). Job number -.I n -may be referred to as -.BR %n . -A job may also be referred to using a prefix of the name used to -start it, or using a substring that appears in its command line. -For example, -.B %ce -refers to a stopped -.B ce -job. If a prefix matches more than one job, -.B bash -reports an error. Using -.BR %?ce , -on the other hand, refers to any job containing the string -.B ce -in its command line. If the substring matches more than one job, -.B bash -reports an error. The symbols -.B %% -and -.B %+ -refer to the shell's notion of the -.IR "current job" , -which is the last job stopped while it was in -the foreground or started in the background. -The -.I "previous job" -may be referenced using -.BR %\- . -If there is only a single job, \fB%+\fP and \fB%\-\fP can both be used -to refer to that job. -In output pertaining to jobs (e.g., the output of the -.B jobs -command), the current job is always flagged with a -.BR + , -and the previous job with a -.BR \- . -A single % (with no accompanying job specification) also refers to the -current job. -.PP -Simply naming a job can be used to bring it into the -foreground: -.B %1 -is a synonym for -\fB``fg %1''\fP, -bringing job 1 from the background into the foreground. -Similarly, -.B ``%1 &'' -resumes job 1 in the background, equivalent to -\fB``bg %1''\fP. -.PP -The shell learns immediately whenever a job changes state. -Normally, -.B bash -waits until it is about to print a prompt before reporting -changes in a job's status so as to not interrupt -any other output. If the -.B \-b -option to the -.B set -builtin command -is enabled, -.B bash -reports such changes immediately. -Any trap on -.SM -.B SIGCHLD -is executed for each child that exits. -.PP -If an attempt to exit -.B bash -is made while jobs are stopped (or, if the \fBcheckjobs\fP shell option has -been enabled using the \fBshopt\fP builtin, running), the shell prints a -warning message, and, if the \fBcheckjobs\fP option is enabled, lists the -jobs and their statuses. -The -.B jobs -command may then be used to inspect their status. -If a second attempt to exit is made without an intervening command, -the shell does not print another warning, and any stopped -jobs are terminated. -.SH PROMPTING -When executing interactively, -.B bash -displays the primary prompt -.SM -.B PS1 -when it is ready to read a command, and the secondary prompt -.SM -.B PS2 -when it needs more input to complete a command. -.B Bash -allows these prompt strings to be customized by inserting a number of -backslash-escaped special characters that are decoded as follows: -.RS -.PD 0 -.TP -.B \ea -an ASCII bell character (07) -.TP -.B \ed -the date in "Weekday Month Date" format (e.g., "Tue May 26") -.TP -.B \eD{\fIformat\fP} -the \fIformat\fP is passed to \fIstrftime\fP(3) and the result is inserted -into the prompt string; an empty \fIformat\fP results in a locale-specific -time representation. The braces are required -.TP -.B \ee -an ASCII escape character (033) -.TP -.B \eh -the hostname up to the first `.' -.TP -.B \eH -the hostname -.TP -.B \ej -the number of jobs currently managed by the shell -.TP -.B \el -the basename of the shell's terminal device name -.TP -.B \en -newline -.TP -.B \er -carriage return -.TP -.B \es -the name of the shell, the basename of -.B $0 -(the portion following the final slash) -.TP -.B \et -the current time in 24-hour HH:MM:SS format -.TP -.B \eT -the current time in 12-hour HH:MM:SS format -.TP -.B \e@ -the current time in 12-hour am/pm format -.TP -.B \eA -the current time in 24-hour HH:MM format -.TP -.B \eu -the username of the current user -.TP -.B \ev -the version of \fBbash\fP (e.g., 2.00) -.TP -.B \eV -the release of \fBbash\fP, version + patch level (e.g., 2.00.0) -.TP -.B \ew -the current working directory, with -.SM -.B $HOME -abbreviated with a tilde -(uses the value of the -.SM -.B PROMPT_DIRTRIM -variable) -.TP -.B \eW -the basename of the current working directory, with -.SM -.B $HOME -abbreviated with a tilde -.TP -.B \e! -the history number of this command -.TP -.B \e# -the command number of this command -.TP -.B \e$ -if the effective UID is 0, a -.BR # , -otherwise a -.B $ -.TP -.B \e\fInnn\fP -the character corresponding to the octal number \fInnn\fP -.TP -.B \e\e -a backslash -.TP -.B \e[ -begin a sequence of non-printing characters, which could be used to -embed a terminal control sequence into the prompt -.TP -.B \e] -end a sequence of non-printing characters -.PD -.RE -.PP -The command number and the history number are usually different: -the history number of a command is its position in the history -list, which may include commands restored from the history file -(see -.SM -.B HISTORY -below), while the command number is the position in the sequence -of commands executed during the current shell session. -After the string is decoded, it is expanded via -parameter expansion, command substitution, arithmetic -expansion, and quote removal, subject to the value of the -.B promptvars -shell option (see the description of the -.B shopt -command under -.SM -.B "SHELL BUILTIN COMMANDS" -below). -.SH READLINE -This is the library that handles reading input when using an interactive -shell, unless the -.B \-\-noediting -option is given at shell invocation. -Line editing is also used when using the \fB\-e\fP option to the -\fBread\fP builtin. -By default, the line editing commands are similar to those of Emacs. -A vi-style line editing interface is also available. -Line editing can be enabled at any time using the -.B \-o emacs -or -.B \-o vi -options to the -.B set -builtin (see -.SM -.B SHELL BUILTIN COMMANDS -below). -To turn off line editing after the shell is running, use the -.B +o emacs -or -.B +o vi -options to the -.B set -builtin. -.SS "Readline Notation" -.PP -In this section, the Emacs-style notation is used to denote -keystrokes. Control keys are denoted by C\-\fIkey\fR, e.g., C\-n -means Control\-N. Similarly, -.I meta -keys are denoted by M\-\fIkey\fR, so M\-x means Meta\-X. (On keyboards -without a -.I meta -key, M\-\fIx\fP means ESC \fIx\fP, i.e., press the Escape key -then the -.I x -key. This makes ESC the \fImeta prefix\fP. -The combination M\-C\-\fIx\fP means ESC\-Control\-\fIx\fP, -or press the Escape key -then hold the Control key while pressing the -.I x -key.) -.PP -Readline commands may be given numeric -.IR arguments , -which normally act as a repeat count. -Sometimes, however, it is the sign of the argument that is significant. -Passing a negative argument to a command that acts in the forward -direction (e.g., \fBkill\-line\fP) causes that command to act in a -backward direction. -Commands whose behavior with arguments deviates from this are noted -below. -.PP -When a command is described as \fIkilling\fP text, the text -deleted is saved for possible future retrieval -(\fIyanking\fP). The killed text is saved in a -\fIkill ring\fP. Consecutive kills cause the text to be -accumulated into one unit, which can be yanked all at once. -Commands which do not kill text separate the chunks of text -on the kill ring. -.SS "Readline Initialization" -.PP -Readline is customized by putting commands in an initialization -file (the \fIinputrc\fP file). -The name of this file is taken from the value of the -.SM -.B INPUTRC -variable. If that variable is unset, the default is -.IR ~/.inputrc . -When a program which uses the readline library starts up, the -initialization file is read, and the key bindings and variables -are set. -There are only a few basic constructs allowed in the -readline initialization file. -Blank lines are ignored. -Lines beginning with a \fB#\fP are comments. -Lines beginning with a \fB$\fP indicate conditional constructs. -Other lines denote key bindings and variable settings. -.PP -The default key-bindings may be changed with an -.I inputrc -file. -Other programs that use this library may add their own commands -and bindings. -.PP -For example, placing -.RS -.PP -M\-Control\-u: universal\-argument -.RE -or -.RS -C\-Meta\-u: universal\-argument -.RE -into the -.I inputrc -would make M\-C\-u execute the readline command -.IR universal\-argument . -.PP -The following symbolic character names are recognized: -.IR RUBOUT , -.IR DEL , -.IR ESC , -.IR LFD , -.IR NEWLINE , -.IR RET , -.IR RETURN , -.IR SPC , -.IR SPACE , -and -.IR TAB . -.PP -In addition to command names, readline allows keys to be bound -to a string that is inserted when the key is pressed (a \fImacro\fP). -.SS "Readline Key Bindings" -.PP -The syntax for controlling key bindings in the -.I inputrc -file is simple. All that is required is the name of the -command or the text of a macro and a key sequence to which -it should be bound. The name may be specified in one of two ways: -as a symbolic key name, possibly with \fIMeta\-\fP or \fIControl\-\fP -prefixes, or as a key sequence. -.PP -When using the form \fBkeyname\fP:\^\fIfunction\-name\fP or \fImacro\fP, -.I keyname -is the name of a key spelled out in English. For example: -.sp -.RS -Control-u: universal\-argument -.br -Meta-Rubout: backward-kill-word -.br -Control-o: "> output" -.RE -.LP -In the above example, -.I C\-u -is bound to the function -.BR universal\-argument , -.I M\-DEL -is bound to the function -.BR backward\-kill\-word , -and -.I C\-o -is bound to run the macro -expressed on the right hand side (that is, to insert the text -.if t \f(CW> output\fP -.if n ``> output'' -into the line). -.PP -In the second form, \fB"keyseq"\fP:\^\fIfunction\-name\fP or \fImacro\fP, -.B keyseq -differs from -.B keyname -above in that strings denoting -an entire key sequence may be specified by placing the sequence -within double quotes. Some GNU Emacs style key escapes can be -used, as in the following example, but the symbolic character names -are not recognized. -.sp -.RS -"\eC\-u": universal\-argument -.br -"\eC\-x\eC\-r": re\-read\-init\-file -.br -"\ee[11~": "Function Key 1" -.RE -.PP -In this example, -.I C\-u -is again bound to the function -.BR universal\-argument . -.I "C\-x C\-r" -is bound to the function -.BR re\-read\-init\-file , -and -.I "ESC [ 1 1 ~" -is bound to insert the text -.if t \f(CWFunction Key 1\fP. -.if n ``Function Key 1''. -.PP -The full set of GNU Emacs style escape sequences is -.RS -.PD 0 -.TP -.B \eC\- -control prefix -.TP -.B \eM\- -meta prefix -.TP -.B \ee -an escape character -.TP -.B \e\e -backslash -.TP -.B \e" -literal " -.TP -.B \e\(aq -literal \(aq -.RE -.PD -.PP -In addition to the GNU Emacs style escape sequences, a second -set of backslash escapes is available: -.RS -.PD 0 -.TP -.B \ea -alert (bell) -.TP -.B \eb -backspace -.TP -.B \ed -delete -.TP -.B \ef -form feed -.TP -.B \en -newline -.TP -.B \er -carriage return -.TP -.B \et -horizontal tab -.TP -.B \ev -vertical tab -.TP -.B \e\fInnn\fP -the eight-bit character whose value is the octal value \fInnn\fP -(one to three digits) -.TP -.B \ex\fIHH\fP -the eight-bit character whose value is the hexadecimal value \fIHH\fP -(one or two hex digits) -.RE -.PD -.PP -When entering the text of a macro, single or double quotes must -be used to indicate a macro definition. -Unquoted text is assumed to be a function name. -In the macro body, the backslash escapes described above are expanded. -Backslash will quote any other character in the macro text, -including " and \(aq. -.PP -.B Bash -allows the current readline key bindings to be displayed or modified -with the -.B bind -builtin command. The editing mode may be switched during interactive -use by using the -.B \-o -option to the -.B set -builtin command (see -.SM -.B SHELL BUILTIN COMMANDS -below). -.SS "Readline Variables" -.PP -Readline has variables that can be used to further customize its -behavior. A variable may be set in the -.I inputrc -file with a statement of the form -.RS -.PP -\fBset\fP \fIvariable\-name\fP \fIvalue\fP -.RE -.PP -Except where noted, readline variables can take the values -.B On -or -.B Off -(without regard to case). -Unrecognized variable names are ignored. -When a variable value is read, empty or null values, "on" (case-insensitive), -and "1" are equivalent to \fBOn\fP. All other values are equivalent to -\fBOff\fP. -The variables and their default values are: -.PP -.PD 0 -.TP -.B bell\-style (audible) -Controls what happens when readline wants to ring the terminal bell. -If set to \fBnone\fP, readline never rings the bell. If set to -\fBvisible\fP, readline uses a visible bell if one is available. -If set to \fBaudible\fP, readline attempts to ring the terminal's bell. -.TP -.B bind\-tty\-special\-chars (On) -If set to \fBOn\fP, readline attempts to bind the control characters -treated specially by the kernel's terminal driver to their readline -equivalents. -.TP -.B colored\-stats (Off) -If set to \fBOn\fP, readline displays possible completions using different -colors to indicate their file type. -The color definitions are taken from the value of the \fBLS_COLORS\fP -environment variable. -.TP -.B comment\-begin (``#'') -The string that is inserted when the readline -.B insert\-comment -command is executed. -This command is bound to -.B M\-# -in emacs mode and to -.B # -in vi command mode. -.TP -.B completion\-ignore\-case (Off) -If set to \fBOn\fP, readline performs filename matching and completion -in a case\-insensitive fashion. -.TP -.B completion\-prefix\-display\-length (0) -The length in characters of the common prefix of a list of possible -completions that is displayed without modification. When set to a -value greater than zero, common prefixes longer than this value are -replaced with an ellipsis when displaying possible completions. -.TP -.B completion\-query\-items (100) -This determines when the user is queried about viewing -the number of possible completions -generated by the \fBpossible\-completions\fP command. -It may be set to any integer value greater than or equal to -zero. If the number of possible completions is greater than -or equal to the value of this variable, the user is asked whether -or not he wishes to view them; otherwise they are simply listed -on the terminal. -.TP -.B convert\-meta (On) -If set to \fBOn\fP, readline will convert characters with the -eighth bit set to an ASCII key sequence -by stripping the eighth bit and prefixing an -escape character (in effect, using escape as the \fImeta prefix\fP). -.TP -.B disable\-completion (Off) -If set to \fBOn\fP, readline will inhibit word completion. Completion -characters will be inserted into the line as if they had been -mapped to \fBself-insert\fP. -.TP -.B editing\-mode (emacs) -Controls whether readline begins with a set of key bindings similar -to \fIEmacs\fP or \fIvi\fP. -.B editing\-mode -can be set to either -.B emacs -or -.BR vi . -.TP -.B echo\-control\-characters (On) -When set to \fBOn\fP, on operating systems that indicate they support it, -readline echoes a character corresponding to a signal generated from the -keyboard. -.TP -.B enable\-keypad (Off) -When set to \fBOn\fP, readline will try to enable the application -keypad when it is called. Some systems need this to enable the -arrow keys. -.TP -.B enable\-meta\-key (On) -When set to \fBOn\fP, readline will try to enable any meta modifier -key the terminal claims to support when it is called. On many terminals, -the meta key is used to send eight-bit characters. -.TP -.B expand\-tilde (Off) -If set to \fBOn\fP, tilde expansion is performed when readline -attempts word completion. -.TP -.B history\-preserve\-point (Off) -If set to \fBOn\fP, the history code attempts to place point at the -same location on each history line retrieved with \fBprevious-history\fP -or \fBnext-history\fP. -.TP -.B history\-size (0) -Set the maximum number of history entries saved in the history list. If -set to zero, the number of entries in the history list is not limited. -.TP -.B horizontal\-scroll\-mode (Off) -When set to \fBOn\fP, makes readline use a single line for display, -scrolling the input horizontally on a single screen line when it -becomes longer than the screen width rather than wrapping to a new line. -.TP -.B input\-meta (Off) -If set to \fBOn\fP, readline will enable eight-bit input (that is, -it will not strip the high bit from the characters it reads), -regardless of what the terminal claims it can support. The name -.B meta\-flag -is a synonym for this variable. -.TP -.B isearch\-terminators (``C\-[C\-J'') -The string of characters that should terminate an incremental -search without subsequently executing the character as a command. -If this variable has not been given a value, the characters -\fIESC\fP and \fIC\-J\fP will terminate an incremental search. -.TP -.B keymap (emacs) -Set the current readline keymap. The set of valid keymap names is -\fIemacs, emacs\-standard, emacs\-meta, emacs\-ctlx, vi, -vi\-command\fP, and -.IR vi\-insert . -\fIvi\fP is equivalent to \fIvi\-command\fP; \fIemacs\fP is -equivalent to \fIemacs\-standard\fP. The default value is -.IR emacs ; -the value of -.B editing\-mode -also affects the default keymap. -.TP -.B keyseq\-timeout (500) -Specifies the duration \fIreadline\fP will wait for a character when reading an -ambiguous key sequence (one that can form a complete key sequence using -the input read so far, or can take additional input to complete a longer -key sequence). -If no input is received within the timeout, \fIreadline\fP will use the shorter -but complete key sequence. -The value is specified in milliseconds, so a value of 1000 means that -\fIreadline\fP will wait one second for additional input. -If this variable is set to a value less than or equal to zero, or to a -non-numeric value, \fIreadline\fP will wait until another key is pressed to -decide which key sequence to complete. -.TP -.B mark\-directories (On) -If set to \fBOn\fP, completed directory names have a slash -appended. -.TP -.B mark\-modified\-lines (Off) -If set to \fBOn\fP, history lines that have been modified are displayed -with a preceding asterisk (\fB*\fP). -.TP -.B mark\-symlinked\-directories (Off) -If set to \fBOn\fP, completed names which are symbolic links to directories -have a slash appended (subject to the value of -\fBmark\-directories\fP). -.TP -.B match\-hidden\-files (On) -This variable, when set to \fBOn\fP, causes readline to match files whose -names begin with a `.' (hidden files) when performing filename -completion. -If set to \fBOff\fP, the leading `.' must be -supplied by the user in the filename to be completed. -.TP -.B menu\-complete\-display\-prefix (Off) -If set to \fBOn\fP, menu completion displays the common prefix of the -list of possible completions (which may be empty) before cycling through -the list. -.TP -.B output\-meta (Off) -If set to \fBOn\fP, readline will display characters with the -eighth bit set directly rather than as a meta-prefixed escape -sequence. -.TP -.B page\-completions (On) -If set to \fBOn\fP, readline uses an internal \fImore\fP-like pager -to display a screenful of possible completions at a time. -.TP -.B print\-completions\-horizontally (Off) -If set to \fBOn\fP, readline will display completions with matches -sorted horizontally in alphabetical order, rather than down the screen. -.TP -.B revert\-all\-at\-newline (Off) -If set to \fBOn\fP, readline will undo all changes to history lines -before returning when \fBaccept\-line\fP is executed. By default, -history lines may be modified and retain individual undo lists across -calls to \fBreadline\fP. -.TP -.B show\-all\-if\-ambiguous (Off) -This alters the default behavior of the completion functions. If -set to -.BR On , -words which have more than one possible completion cause the -matches to be listed immediately instead of ringing the bell. -.TP -.B show\-all\-if\-unmodified (Off) -This alters the default behavior of the completion functions in -a fashion similar to \fBshow\-all\-if\-ambiguous\fP. -If set to -.BR On , -words which have more than one possible completion without any -possible partial completion (the possible completions don't share -a common prefix) cause the matches to be listed immediately instead -of ringing the bell. -.TP -.B skip\-completed\-text (Off) -If set to \fBOn\fP, this alters the default completion behavior when -inserting a single match into the line. It's only active when -performing completion in the middle of a word. If enabled, readline -does not insert characters from the completion that match characters -after point in the word being completed, so portions of the word -following the cursor are not duplicated. -.TP -.B visible\-stats (Off) -If set to \fBOn\fP, a character denoting a file's type as reported -by \fIstat\fP(2) is appended to the filename when listing possible -completions. -.PD -.SS "Readline Conditional Constructs" -.PP -Readline implements a facility similar in spirit to the conditional -compilation features of the C preprocessor which allows key -bindings and variable settings to be performed as the result -of tests. There are four parser directives used. -.IP \fB$if\fP -The -.B $if -construct allows bindings to be made based on the -editing mode, the terminal being used, or the application using -readline. The text of the test extends to the end of the line; -no characters are required to isolate it. -.RS -.IP \fBmode\fP -The \fBmode=\fP form of the \fB$if\fP directive is used to test -whether readline is in emacs or vi mode. -This may be used in conjunction -with the \fBset keymap\fP command, for instance, to set bindings in -the \fIemacs\-standard\fP and \fIemacs\-ctlx\fP keymaps only if -readline is starting out in emacs mode. -.IP \fBterm\fP -The \fBterm=\fP form may be used to include terminal-specific -key bindings, perhaps to bind the key sequences output by the -terminal's function keys. The word on the right side of the -.B = -is tested against the both full name of the terminal and the portion -of the terminal name before the first \fB\-\fP. This allows -.I sun -to match both -.I sun -and -.IR sun\-cmd , -for instance. -.IP \fBapplication\fP -The \fBapplication\fP construct is used to include -application-specific settings. Each program using the readline -library sets the \fIapplication name\fP, and an initialization -file can test for a particular value. -This could be used to bind key sequences to functions useful for -a specific program. For instance, the following command adds a -key sequence that quotes the current or previous word in \fBbash\fP: -.sp 1 -.RS -.nf -\fB$if\fP Bash -# Quote the current or previous word -"\eC\-xq": "\eeb\e"\eef\e"" -\fB$endif\fP -.fi -.RE -.RE -.IP \fB$endif\fP -This command, as seen in the previous example, terminates an -\fB$if\fP command. -.IP \fB$else\fP -Commands in this branch of the \fB$if\fP directive are executed if -the test fails. -.IP \fB$include\fP -This directive takes a single filename as an argument and reads commands -and bindings from that file. For example, the following directive -would read \fI/etc/inputrc\fP: -.sp 1 -.RS -.nf -\fB$include\fP \^ \fI/etc/inputrc\fP -.fi -.RE -.SS Searching -.PP -Readline provides commands for searching through the command history -(see -.SM -.B HISTORY -below) for lines containing a specified string. -There are two search modes: -.I incremental -and -.IR non-incremental . -.PP -Incremental searches begin before the user has finished typing the -search string. -As each character of the search string is typed, readline displays -the next entry from the history matching the string typed so far. -An incremental search requires only as many characters as needed to -find the desired history entry. -The characters present in the value of the \fBisearch-terminators\fP -variable are used to terminate an incremental search. -If that variable has not been assigned a value the Escape and -Control-J characters will terminate an incremental search. -Control-G will abort an incremental search and restore the original -line. -When the search is terminated, the history entry containing the -search string becomes the current line. -.PP -To find other matching entries in the history list, type Control-S or -Control-R as appropriate. -This will search backward or forward in the history for the next -entry matching the search string typed so far. -Any other key sequence bound to a readline command will terminate -the search and execute that command. -For instance, a \fInewline\fP will terminate the search and accept -the line, thereby executing the command from the history list. -.PP -Readline remembers the last incremental search string. If two -Control-Rs are typed without any intervening characters defining a -new search string, any remembered search string is used. -.PP -Non-incremental searches read the entire search string before starting -to search for matching history lines. The search string may be -typed by the user or be part of the contents of the current line. -.SS "Readline Command Names" -.PP -The following is a list of the names of the commands and the default -key sequences to which they are bound. -Command names without an accompanying key sequence are unbound by default. -In the following descriptions, \fIpoint\fP refers to the current cursor -position, and \fImark\fP refers to a cursor position saved by the -\fBset\-mark\fP command. -The text between the point and mark is referred to as the \fIregion\fP. -.SS Commands for Moving -.PP -.PD 0 -.TP -.B beginning\-of\-line (C\-a) -Move to the start of the current line. -.TP -.B end\-of\-line (C\-e) -Move to the end of the line. -.TP -.B forward\-char (C\-f) -Move forward a character. -.TP -.B backward\-char (C\-b) -Move back a character. -.TP -.B forward\-word (M\-f) -Move forward to the end of the next word. Words are composed of -alphanumeric characters (letters and digits). -.TP -.B backward\-word (M\-b) -Move back to the start of the current or previous word. -Words are composed of alphanumeric characters (letters and digits). -.TP -.B shell\-forward\-word -Move forward to the end of the next word. -Words are delimited by non-quoted shell metacharacters. -.TP -.B shell\-backward\-word -Move back to the start of the current or previous word. -Words are delimited by non-quoted shell metacharacters. -.TP -.B clear\-screen (C\-l) -Clear the screen leaving the current line at the top of the screen. -With an argument, refresh the current line without clearing the -screen. -.TP -.B redraw\-current\-line -Refresh the current line. -.PD -.SS Commands for Manipulating the History -.PP -.PD 0 -.TP -.B accept\-line (Newline, Return) -Accept the line regardless of where the cursor is. If this line is -non-empty, add it to the history list according to the state of the -.SM -.B HISTCONTROL -variable. If the line is a modified history -line, then restore the history line to its original state. -.TP -.B previous\-history (C\-p) -Fetch the previous command from the history list, moving back in -the list. -.TP -.B next\-history (C\-n) -Fetch the next command from the history list, moving forward in the -list. -.TP -.B beginning\-of\-history (M\-<) -Move to the first line in the history. -.TP -.B end\-of\-history (M\->) -Move to the end of the input history, i.e., the line currently being -entered. -.TP -.B reverse\-search\-history (C\-r) -Search backward starting at the current line and moving `up' through -the history as necessary. This is an incremental search. -.TP -.B forward\-search\-history (C\-s) -Search forward starting at the current line and moving `down' through -the history as necessary. This is an incremental search. -.TP -.B non\-incremental\-reverse\-search\-history (M\-p) -Search backward through the history starting at the current line -using a non-incremental search for a string supplied by the user. -.TP -.B non\-incremental\-forward\-search\-history (M\-n) -Search forward through the history using a non-incremental search for -a string supplied by the user. -.TP -.B history\-search\-forward -Search forward through the history for the string of characters -between the start of the current line and the point. -This is a non-incremental search. -.TP -.B history\-search\-backward -Search backward through the history for the string of characters -between the start of the current line and the point. -This is a non-incremental search. -.TP -.B yank\-nth\-arg (M\-C\-y) -Insert the first argument to the previous command (usually -the second word on the previous line) at point. -With an argument -.IR n , -insert the \fIn\fPth word from the previous command (the words -in the previous command begin with word 0). A negative argument -inserts the \fIn\fPth word from the end of the previous command. -Once the argument \fIn\fP is computed, the argument is extracted -as if the "!\fIn\fP" history expansion had been specified. -.TP -.B -yank\-last\-arg (M\-.\^, M\-_\^) -Insert the last argument to the previous command (the last word of -the previous history entry). -With a numeric argument, behave exactly like \fByank\-nth\-arg\fP. -Successive calls to \fByank\-last\-arg\fP move back through the history -list, inserting the last word (or the word specified by the argument to -the first call) of each line in turn. -Any numeric argument supplied to these successive calls determines -the direction to move through the history. A negative argument switches -the direction through the history (back or forward). -The history expansion facilities are used to extract the last argument, -as if the "!$" history expansion had been specified. -.TP -.B shell\-expand\-line (M\-C\-e) -Expand the line as the shell does. This -performs alias and history expansion as well as all of the shell -word expansions. See -.SM -.B HISTORY EXPANSION -below for a description of history expansion. -.TP -.B history\-expand\-line (M\-^) -Perform history expansion on the current line. -See -.SM -.B HISTORY EXPANSION -below for a description of history expansion. -.TP -.B magic\-space -Perform history expansion on the current line and insert a space. -See -.SM -.B HISTORY EXPANSION -below for a description of history expansion. -.TP -.B alias\-expand\-line -Perform alias expansion on the current line. -See -.SM -.B ALIASES -above for a description of alias expansion. -.TP -.B history\-and\-alias\-expand\-line -Perform history and alias expansion on the current line. -.TP -.B insert\-last\-argument (M\-.\^, M\-_\^) -A synonym for \fByank\-last\-arg\fP. -.TP -.B operate\-and\-get\-next (C\-o) -Accept the current line for execution and fetch the next line -relative to the current line from the history for editing. Any -argument is ignored. -.TP -.B edit\-and\-execute\-command (C\-xC\-e) -Invoke an editor on the current command line, and execute the result as shell -commands. -\fBBash\fP attempts to invoke -.SM -.BR $VISUAL , -.SM -.BR $EDITOR , -and \fIemacs\fP as the editor, in that order. -.PD -.SS Commands for Changing Text -.PP -.PD 0 -.TP -.B delete\-char (C\-d) -Delete the character at point. If point is at the -beginning of the line, there are no characters in the line, and -the last character typed was not bound to \fBdelete\-char\fP, -then return -.SM -.BR EOF . -.TP -.B backward\-delete\-char (Rubout) -Delete the character behind the cursor. When given a numeric argument, -save the deleted text on the kill ring. -.TP -.B forward\-backward\-delete\-char -Delete the character under the cursor, unless the cursor is at the -end of the line, in which case the character behind the cursor is -deleted. -.TP -.B quoted\-insert (C\-q, C\-v) -Add the next character typed to the line verbatim. This is -how to insert characters like \fBC\-q\fP, for example. -.TP -.B tab\-insert (C\-v TAB) -Insert a tab character. -.TP -.B self\-insert (a,\ b,\ A,\ 1,\ !,\ ...) -Insert the character typed. -.TP -.B transpose\-chars (C\-t) -Drag the character before point forward over the character at point, -moving point forward as well. -If point is at the end of the line, then this transposes -the two characters before point. -Negative arguments have no effect. -.TP -.B transpose\-words (M\-t) -Drag the word before point past the word after point, -moving point over that word as well. -If point is at the end of the line, this transposes -the last two words on the line. -.TP -.B upcase\-word (M\-u) -Uppercase the current (or following) word. With a negative argument, -uppercase the previous word, but do not move point. -.TP -.B downcase\-word (M\-l) -Lowercase the current (or following) word. With a negative argument, -lowercase the previous word, but do not move point. -.TP -.B capitalize\-word (M\-c) -Capitalize the current (or following) word. With a negative argument, -capitalize the previous word, but do not move point. -.TP -.B overwrite\-mode -Toggle overwrite mode. With an explicit positive numeric argument, -switches to overwrite mode. With an explicit non-positive numeric -argument, switches to insert mode. This command affects only -\fBemacs\fP mode; \fBvi\fP mode does overwrite differently. -Each call to \fIreadline()\fP starts in insert mode. -In overwrite mode, characters bound to \fBself\-insert\fP replace -the text at point rather than pushing the text to the right. -Characters bound to \fBbackward\-delete\-char\fP replace the character -before point with a space. By default, this command is unbound. -.PD -.SS Killing and Yanking -.PP -.PD 0 -.TP -.B kill\-line (C\-k) -Kill the text from point to the end of the line. -.TP -.B backward\-kill\-line (C\-x Rubout) -Kill backward to the beginning of the line. -.TP -.B unix\-line\-discard (C\-u) -Kill backward from point to the beginning of the line. -The killed text is saved on the kill-ring. -.\" There is no real difference between this and backward-kill-line -.TP -.B kill\-whole\-line -Kill all characters on the current line, no matter where point is. -.TP -.B kill\-word (M\-d) -Kill from point to the end of the current word, or if between -words, to the end of the next word. -Word boundaries are the same as those used by \fBforward\-word\fP. -.TP -.B backward\-kill\-word (M\-Rubout) -Kill the word behind point. -Word boundaries are the same as those used by \fBbackward\-word\fP. -.TP -.B shell\-kill\-word (M\-d) -Kill from point to the end of the current word, or if between -words, to the end of the next word. -Word boundaries are the same as those used by \fBshell\-forward\-word\fP. -.TP -.B shell\-backward\-kill\-word (M\-Rubout) -Kill the word behind point. -Word boundaries are the same as those used by \fBshell\-backward\-word\fP. -.TP -.B unix\-word\-rubout (C\-w) -Kill the word behind point, using white space as a word boundary. -The killed text is saved on the kill-ring. -.TP -.B unix\-filename\-rubout -Kill the word behind point, using white space and the slash character -as the word boundaries. -The killed text is saved on the kill-ring. -.TP -.B delete\-horizontal\-space (M\-\e) -Delete all spaces and tabs around point. -.TP -.B kill\-region -Kill the text in the current region. -.TP -.B copy\-region\-as\-kill -Copy the text in the region to the kill buffer. -.TP -.B copy\-backward\-word -Copy the word before point to the kill buffer. -The word boundaries are the same as \fBbackward\-word\fP. -.TP -.B copy\-forward\-word -Copy the word following point to the kill buffer. -The word boundaries are the same as \fBforward\-word\fP. -.TP -.B yank (C\-y) -Yank the top of the kill ring into the buffer at point. -.TP -.B yank\-pop (M\-y) -Rotate the kill ring, and yank the new top. Only works following -.B yank -or -.BR yank\-pop . -.PD -.SS Numeric Arguments -.PP -.PD 0 -.TP -.B digit\-argument (M\-0, M\-1, ..., M\-\-) -Add this digit to the argument already accumulating, or start a new -argument. M\-\- starts a negative argument. -.TP -.B universal\-argument -This is another way to specify an argument. -If this command is followed by one or more digits, optionally with a -leading minus sign, those digits define the argument. -If the command is followed by digits, executing -.B universal\-argument -again ends the numeric argument, but is otherwise ignored. -As a special case, if this command is immediately followed by a -character that is neither a digit or minus sign, the argument count -for the next command is multiplied by four. -The argument count is initially one, so executing this function the -first time makes the argument count four, a second time makes the -argument count sixteen, and so on. -.PD -.SS Completing -.PP -.PD 0 -.TP -.B complete (TAB) -Attempt to perform completion on the text before point. -.B Bash -attempts completion treating the text as a variable (if the -text begins with \fB$\fP), username (if the text begins with -\fB~\fP), hostname (if the text begins with \fB@\fP), or -command (including aliases and functions) in turn. If none -of these produces a match, filename completion is attempted. -.TP -.B possible\-completions (M\-?) -List the possible completions of the text before point. -.TP -.B insert\-completions (M\-*) -Insert all completions of the text before point -that would have been generated by -\fBpossible\-completions\fP. -.TP -.B menu\-complete -Similar to \fBcomplete\fP, but replaces the word to be completed -with a single match from the list of possible completions. -Repeated execution of \fBmenu\-complete\fP steps through the list -of possible completions, inserting each match in turn. -At the end of the list of completions, the bell is rung -(subject to the setting of \fBbell\-style\fP) -and the original text is restored. -An argument of \fIn\fP moves \fIn\fP positions forward in the list -of matches; a negative argument may be used to move backward -through the list. -This command is intended to be bound to \fBTAB\fP, but is unbound -by default. -.TP -.B menu\-complete\-backward -Identical to \fBmenu\-complete\fP, but moves backward through the list -of possible completions, as if \fBmenu\-complete\fP had been given a -negative argument. This command is unbound by default. -.TP -.B delete\-char\-or\-list -Deletes the character under the cursor if not at the beginning or -end of the line (like \fBdelete\-char\fP). -If at the end of the line, behaves identically to -\fBpossible\-completions\fP. -This command is unbound by default. -.TP -.B complete\-filename (M\-/) -Attempt filename completion on the text before point. -.TP -.B possible\-filename\-completions (C\-x /) -List the possible completions of the text before point, -treating it as a filename. -.TP -.B complete\-username (M\-~) -Attempt completion on the text before point, treating -it as a username. -.TP -.B possible\-username\-completions (C\-x ~) -List the possible completions of the text before point, -treating it as a username. -.TP -.B complete\-variable (M\-$) -Attempt completion on the text before point, treating -it as a shell variable. -.TP -.B possible\-variable\-completions (C\-x $) -List the possible completions of the text before point, -treating it as a shell variable. -.TP -.B complete\-hostname (M\-@) -Attempt completion on the text before point, treating -it as a hostname. -.TP -.B possible\-hostname\-completions (C\-x @) -List the possible completions of the text before point, -treating it as a hostname. -.TP -.B complete\-command (M\-!) -Attempt completion on the text before point, treating -it as a command name. Command completion attempts to -match the text against aliases, reserved words, shell -functions, shell builtins, and finally executable filenames, -in that order. -.TP -.B possible\-command\-completions (C\-x !) -List the possible completions of the text before point, -treating it as a command name. -.TP -.B dynamic\-complete\-history (M\-TAB) -Attempt completion on the text before point, comparing -the text against lines from the history list for possible -completion matches. -.TP -.B dabbrev\-expand -Attempt menu completion on the text before point, comparing -the text against lines from the history list for possible -completion matches. -.TP -.B complete\-into\-braces (M\-{) -Perform filename completion and insert the list of possible completions -enclosed within braces so the list is available to the shell (see -.B Brace Expansion -above). -.PD -.SS Keyboard Macros -.PP -.PD 0 -.TP -.B start\-kbd\-macro (C\-x (\^) -Begin saving the characters typed into the current keyboard macro. -.TP -.B end\-kbd\-macro (C\-x )\^) -Stop saving the characters typed into the current keyboard macro -and store the definition. -.TP -.B call\-last\-kbd\-macro (C\-x e) -Re-execute the last keyboard macro defined, by making the characters -in the macro appear as if typed at the keyboard. -.B print\-last\-kbd\-macro () -Print the last keyboard macro defined in a format suitable for the -\fIinputrc\fP file. -.PD -.SS Miscellaneous -.PP -.PD 0 -.TP -.B re\-read\-init\-file (C\-x C\-r) -Read in the contents of the \fIinputrc\fP file, and incorporate -any bindings or variable assignments found there. -.TP -.B abort (C\-g) -Abort the current editing command and -ring the terminal's bell (subject to the setting of -.BR bell\-style ). -.TP -.B do\-uppercase\-version (M\-a, M\-b, M\-\fIx\fP, ...) -If the metafied character \fIx\fP is lowercase, run the command -that is bound to the corresponding uppercase character. -.TP -.B prefix\-meta (ESC) -Metafy the next character typed. -.SM -.B ESC -.B f -is equivalent to -.BR Meta\-f . -.TP -.B undo (C\-_, C\-x C\-u) -Incremental undo, separately remembered for each line. -.TP -.B revert\-line (M\-r) -Undo all changes made to this line. This is like executing the -.B undo -command enough times to return the line to its initial state. -.TP -.B tilde\-expand (M\-&) -Perform tilde expansion on the current word. -.TP -.B set\-mark (C\-@, M\-) -Set the mark to the point. If a -numeric argument is supplied, the mark is set to that position. -.TP -.B exchange\-point\-and\-mark (C\-x C\-x) -Swap the point with the mark. The current cursor position is set to -the saved position, and the old cursor position is saved as the mark. -.TP -.B character\-search (C\-]) -A character is read and point is moved to the next occurrence of that -character. A negative count searches for previous occurrences. -.TP -.B character\-search\-backward (M\-C\-]) -A character is read and point is moved to the previous occurrence of that -character. A negative count searches for subsequent occurrences. -.TP -.B skip\-csi\-sequence -Read enough characters to consume a multi-key sequence such as those -defined for keys like Home and End. Such sequences begin with a -Control Sequence Indicator (CSI), usually ESC\-[. If this sequence is -bound to "\e[", keys producing such sequences will have no effect -unless explicitly bound to a readline command, instead of inserting -stray characters into the editing buffer. This is unbound by default, -but usually bound to ESC\-[. -.TP -.B insert\-comment (M\-#) -Without a numeric argument, the value of the readline -.B comment\-begin -variable is inserted at the beginning of the current line. -If a numeric argument is supplied, this command acts as a toggle: if -the characters at the beginning of the line do not match the value -of \fBcomment\-begin\fP, the value is inserted, otherwise -the characters in \fBcomment\-begin\fP are deleted from the beginning of -the line. -In either case, the line is accepted as if a newline had been typed. -The default value of -\fBcomment\-begin\fP causes this command to make the current line -a shell comment. -If a numeric argument causes the comment character to be removed, the line -will be executed by the shell. -.TP -.B glob\-complete\-word (M\-g) -The word before point is treated as a pattern for pathname expansion, -with an asterisk implicitly appended. This pattern is used to -generate a list of matching filenames for possible completions. -.TP -.B glob\-expand\-word (C\-x *) -The word before point is treated as a pattern for pathname expansion, -and the list of matching filenames is inserted, replacing the word. -If a numeric argument is supplied, an asterisk is appended before -pathname expansion. -.TP -.B glob\-list\-expansions (C\-x g) -The list of expansions that would have been generated by -.B glob\-expand\-word -is displayed, and the line is redrawn. -If a numeric argument is supplied, an asterisk is appended before -pathname expansion. -.TP -.B dump\-functions -Print all of the functions and their key bindings to the -readline output stream. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an \fIinputrc\fP file. -.TP -.B dump\-variables -Print all of the settable readline variables and their values to the -readline output stream. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an \fIinputrc\fP file. -.TP -.B dump\-macros -Print all of the readline key sequences bound to macros and the -strings they output. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an \fIinputrc\fP file. -.TP -.B display\-shell\-version (C\-x C\-v) -Display version information about the current instance of -.BR bash . -.PD -.SS Programmable Completion -.PP -When word completion is attempted for an argument to a command for -which a completion specification (a \fIcompspec\fP) has been defined -using the \fBcomplete\fP builtin (see -.SM -.B "SHELL BUILTIN COMMANDS" -below), the programmable completion facilities are invoked. -.PP -First, the command name is identified. -If the command word is the empty string (completion attempted at the -beginning of an empty line), any compspec defined with -the \fB\-E\fP option to \fBcomplete\fP is used. -If a compspec has been defined for that command, the -compspec is used to generate the list of possible completions for the word. -If the command word is a full pathname, a compspec for the full -pathname is searched for first. -If no compspec is found for the full pathname, an attempt is made to -find a compspec for the portion following the final slash. -If those searches do not result in a compspec, any compspec defined with -the \fB\-D\fP option to \fBcomplete\fP is used as the default. -.PP -Once a compspec has been found, it is used to generate the list of -matching words. -If a compspec is not found, the default \fBbash\fP completion as -described above under \fBCompleting\fP is performed. -.PP -First, the actions specified by the compspec are used. -Only matches which are prefixed by the word being completed are -returned. -When the -.B \-f -or -.B \-d -option is used for filename or directory name completion, the shell -variable -.SM -.B FIGNORE -is used to filter the matches. -.PP -Any completions specified by a pathname expansion pattern to the -\fB\-G\fP option are generated next. -The words generated by the pattern need not match the word -being completed. -The -.SM -.B GLOBIGNORE -shell variable is not used to filter the matches, but the -.SM -.B FIGNORE -variable is used. -.PP -Next, the string specified as the argument to the \fB\-W\fP option -is considered. -The string is first split using the characters in the -.SM -.B IFS -special variable as delimiters. -Shell quoting is honored. -Each word is then expanded using -brace expansion, tilde expansion, parameter and variable expansion, -command substitution, and arithmetic expansion, -as described above under -.SM -.BR EXPANSION . -The results are split using the rules described above under -\fBWord Splitting\fP. -The results of the expansion are prefix-matched against the word being -completed, and the matching words become the possible completions. -.PP -After these matches have been generated, any shell function or command -specified with the \fB\-F\fP and \fB\-C\fP options is invoked. -When the command or function is invoked, the -.SM -.BR COMP_LINE , -.SM -.BR COMP_POINT , -.SM -.BR COMP_KEY , -and -.SM -.B COMP_TYPE -variables are assigned values as described above under -\fBShell Variables\fP. -If a shell function is being invoked, the -.SM -.B COMP_WORDS -and -.SM -.B COMP_CWORD -variables are also set. -When the function or command is invoked, -the first argument (\fB$1\fP) is the name of the command whose arguments are -being completed, -the second argument (\fB$2\fP) is the word being completed, -and the third argument (\fB$3\fP) is the word preceding the word being -completed on the current command line. -No filtering of the generated completions against the word being completed -is performed; the function or command has complete freedom in generating -the matches. -.PP -Any function specified with \fB\-F\fP is invoked first. -The function may use any of the shell facilities, including the -\fBcompgen\fP builtin described below, to generate the matches. -It must put the possible completions in the -.SM -.B COMPREPLY -array variable, one per array element. -.PP -Next, any command specified with the \fB\-C\fP option is invoked -in an environment equivalent to command substitution. -It should print a list of completions, one per line, to the -standard output. -Backslash may be used to escape a newline, if necessary. -.PP -After all of the possible completions are generated, any filter -specified with the \fB\-X\fP option is applied to the list. -The filter is a pattern as used for pathname expansion; a \fB&\fP -in the pattern is replaced with the text of the word being completed. -A literal \fB&\fP may be escaped with a backslash; the backslash -is removed before attempting a match. -Any completion that matches the pattern will be removed from the list. -A leading \fB!\fP negates the pattern; in this case any completion -not matching the pattern will be removed. -.PP -Finally, any prefix and suffix specified with the \fB\-P\fP and \fB\-S\fP -options are added to each member of the completion list, and the result is -returned to the readline completion code as the list of possible -completions. -.PP -If the previously-applied actions do not generate any matches, and the -\fB\-o dirnames\fP option was supplied to \fBcomplete\fP when the -compspec was defined, directory name completion is attempted. -.PP -If the \fB\-o plusdirs\fP option was supplied to \fBcomplete\fP when the -compspec was defined, directory name completion is attempted and any -matches are added to the results of the other actions. -.PP -By default, if a compspec is found, whatever it generates is returned -to the completion code as the full set of possible completions. -The default \fBbash\fP completions are not attempted, and the readline -default of filename completion is disabled. -If the \fB\-o bashdefault\fP option was supplied to \fBcomplete\fP when -the compspec was defined, the \fBbash\fP default completions are attempted -if the compspec generates no matches. -If the \fB\-o default\fP option was supplied to \fBcomplete\fP when the -compspec was defined, readline's default completion will be performed -if the compspec (and, if attempted, the default \fBbash\fP completions) -generate no matches. -.PP -When a compspec indicates that directory name completion is desired, -the programmable completion functions force readline to append a slash -to completed names which are symbolic links to directories, subject to -the value of the \fBmark\-directories\fP readline variable, regardless -of the setting of the \fBmark-symlinked\-directories\fP readline variable. -.PP -There is some support for dynamically modifying completions. This is -most useful when used in combination with a default completion specified -with \fBcomplete -D\fP. -It's possible for shell functions executed as completion -handlers to indicate that completion should be retried by returning an -exit status of 124. If a shell function returns 124, and changes -the compspec associated with the command on which completion is being -attempted (supplied as the first argument when the function is executed), -programmable completion restarts from the beginning, with an -attempt to find a new compspec for that command. This allows a set of -completions to be built dynamically as completion is attempted, rather than -being loaded all at once. -.PP -For instance, assuming that there is a library of compspecs, each kept in a -file corresponding to the name of the command, the following default -completion function would load completions dynamically: -.PP -\f(CW_completion_loader() -.br -{ -.br - . "/etc/bash_completion.d/$1.sh" >/dev/null 2>&1 && return 124 -.br -} -.br -complete -D -F _completion_loader -.br -\fP -.SH HISTORY -When the -.B \-o history -option to the -.B set -builtin is enabled, the shell provides access to the -\fIcommand history\fP, -the list of commands previously typed. -The value of the -.SM -.B HISTSIZE -variable is used as the -number of commands to save in a history list. -The text of the last -.SM -.B HISTSIZE -commands (default 500) is saved. The shell -stores each command in the history list prior to parameter and -variable expansion (see -.SM -.B EXPANSION -above) but after history expansion is performed, subject to the -values of the shell variables -.SM -.B HISTIGNORE -and -.SM -.BR HISTCONTROL . -.PP -On startup, the history is initialized from the file named by -the variable -.SM -.B HISTFILE -(default \fI~/.bash_history\fP). -The file named by the value of -.SM -.B HISTFILE -is truncated, if necessary, to contain no more than -the number of lines specified by the value of -.SM -.BR HISTFILESIZE . -If \fBHISTFILESIZE\fP is unset, or set to null, a non-numeric value, -or a numeric value less than zero, the history file is not truncated. -When the history file is read, -lines beginning with the history comment character followed immediately -by a digit are interpreted as timestamps for the preceding history line. -These timestamps are optionally displayed depending on the value of the -.SM -.B HISTTIMEFORMAT -variable. -When an interactive shell exits, the last -.SM -.B $HISTSIZE -lines are copied from the history list to -.SM -.BR $HISTFILE . -If the -.B histappend -shell option is enabled -(see the description of -.B shopt -under -.SM -.B "SHELL BUILTIN COMMANDS" -below), the lines are appended to the history file, -otherwise the history file is overwritten. -If -.SM -.B HISTFILE -is unset, or if the history file is unwritable, the history is -not saved. -If the -.SM -.B HISTTIMEFORMAT -variable is set, time stamps are written to the history file, marked -with the history comment character, so -they may be preserved across shell sessions. -This uses the history comment character to distinguish timestamps from -other history lines. -After saving the history, the history file is truncated -to contain no more than -.SM -.B HISTFILESIZE -lines. If -.SM -.B HISTFILESIZE -is unset, or set to null, a non-numeric value, -or a numeric value less than zero, the history file is not truncated. -.PP -The builtin command -.B fc -(see -.SM -.B SHELL BUILTIN COMMANDS -below) may be used to list or edit and re-execute a portion of -the history list. -The -.B history -builtin may be used to display or modify the history list and -manipulate the history file. -When using command-line editing, search commands -are available in each editing mode that provide access to the -history list. -.PP -The shell allows control over which commands are saved on the history -list. The -.SM -.B HISTCONTROL -and -.SM -.B HISTIGNORE -variables may be set to cause the shell to save only a subset of the -commands entered. -The -.B cmdhist -shell option, if enabled, causes the shell to attempt to save each -line of a multi-line command in the same history entry, adding -semicolons where necessary to preserve syntactic correctness. -The -.B lithist -shell option causes the shell to save the command with embedded newlines -instead of semicolons. See the description of the -.B shopt -builtin below under -.SM -.B "SHELL BUILTIN COMMANDS" -for information on setting and unsetting shell options. -.SH "HISTORY EXPANSION" -.PP -The shell supports a history expansion feature that -is similar to the history expansion in -.BR csh. -This section describes what syntax features are available. This -feature is enabled by default for interactive shells, and can be -disabled using the -.B \+H -option to the -.B set -builtin command (see -.SM -.B SHELL BUILTIN COMMANDS -below). Non-interactive shells do not perform history expansion -by default. -.PP -History expansions introduce words from the history list into -the input stream, making it easy to repeat commands, insert the -arguments to a previous command into the current input line, or -fix errors in previous commands quickly. -.PP -History expansion is performed immediately after a complete line -is read, before the shell breaks it into words. -It takes place in two parts. -The first is to determine which line from the history list -to use during substitution. -The second is to select portions of that line for inclusion into -the current one. -The line selected from the history is the \fIevent\fP, -and the portions of that line that are acted upon are \fIwords\fP. -Various \fImodifiers\fP are available to manipulate the selected words. -The line is broken into words in the same fashion as when reading input, -so that several \fImetacharacter\fP-separated words surrounded by -quotes are considered one word. -History expansions are introduced by the appearance of the -history expansion character, which is \^\fB!\fP\^ by default. -Only backslash (\^\fB\e\fP\^) and single quotes can quote -the history expansion character. -.PP -Several characters inhibit history expansion if found immediately -following the history expansion character, even if it is unquoted: -space, tab, newline, carriage return, and \fB=\fP. -If the \fBextglob\fP shell option is enabled, \fB(\fP will also -inhibit expansion. -.PP -Several shell options settable with the -.B shopt -builtin may be used to tailor the behavior of history expansion. -If the -.B histverify -shell option is enabled (see the description of the -.B shopt -builtin below), and -.B readline -is being used, history substitutions are not immediately passed to -the shell parser. -Instead, the expanded line is reloaded into the -.B readline -editing buffer for further modification. -If -.B readline -is being used, and the -.B histreedit -shell option is enabled, a failed history substitution will be reloaded -into the -.B readline -editing buffer for correction. -The -.B \-p -option to the -.B history -builtin command may be used to see what a history expansion will -do before using it. -The -.B \-s -option to the -.B history -builtin may be used to add commands to the end of the history list -without actually executing them, so that they are available for -subsequent recall. -.PP -The shell allows control of the various characters used by the -history expansion mechanism (see the description of -.B histchars -above under -.BR "Shell Variables" ). -The shell uses -the history comment character to mark history timestamps when -writing the history file. -.SS Event Designators -.PP -An event designator is a reference to a command line entry in the -history list. -Unless the reference is absolute, events are relative to the current -position in the history list. -.PP -.PD 0 -.TP -.B ! -Start a history substitution, except when followed by a -.BR blank , -newline, carriage return, = -or ( (when the \fBextglob\fP shell option is enabled using -the \fBshopt\fP builtin). -.TP -.B !\fIn\fR -Refer to command line -.IR n . -.TP -.B !\-\fIn\fR -Refer to the current command minus -.IR n . -.TP -.B !! -Refer to the previous command. This is a synonym for `!\-1'. -.TP -.B !\fIstring\fR -Refer to the most recent command preceding the current position in the -history list starting with -.IR string . -.TP -.B !?\fIstring\fR\fB[?]\fR -Refer to the most recent command preceding the current position in the -history list containing -.IR string . -The trailing \fB?\fP may be omitted if -.I string -is followed immediately by a newline. -.TP -.B \d\s+2^\s-2\u\fIstring1\fP\d\s+2^\s-2\u\fIstring2\fP\d\s+2^\s-2\u -Quick substitution. Repeat the previous command, replacing -.I string1 -with -.IR string2 . -Equivalent to -``!!:s/\fIstring1\fP/\fIstring2\fP/'' -(see \fBModifiers\fP below). -.TP -.B !# -The entire command line typed so far. -.PD -.SS Word Designators -.PP -Word designators are used to select desired words from the event. -A -.B : -separates the event specification from the word designator. -It may be omitted if the word designator begins with a -.BR ^ , -.BR $ , -.BR * , -.BR \- , -or -.BR % . -Words are numbered from the beginning of the line, -with the first word being denoted by 0 (zero). -Words are inserted into the current line separated by single spaces. -.PP -.PD 0 -.TP -.B 0 (zero) -The zeroth word. For the shell, this is the command -word. -.TP -.I n -The \fIn\fRth word. -.TP -.B ^ -The first argument. That is, word 1. -.TP -.B $ -The last argument. -.TP -.B % -The word matched by the most recent `?\fIstring\fR?' search. -.TP -.I x\fB\-\fPy -A range of words; `\-\fIy\fR' abbreviates `0\-\fIy\fR'. -.TP -.B * -All of the words but the zeroth. This is a synonym -for `\fI1\-$\fP'. It is not an error to use -.B * -if there is just one -word in the event; the empty string is returned in that case. -.TP -.B x* -Abbreviates \fIx\-$\fP. -.TP -.B x\- -Abbreviates \fIx\-$\fP like \fBx*\fP, but omits the last word. -.PD -.PP -If a word designator is supplied without an event specification, the -previous command is used as the event. -.SS Modifiers -.PP -After the optional word designator, there may appear a sequence of -one or more of the following modifiers, each preceded by a `:'. -.PP -.PD 0 -.PP -.TP -.B h -Remove a trailing filename component, leaving only the head. -.TP -.B t -Remove all leading filename components, leaving the tail. -.TP -.B r -Remove a trailing suffix of the form \fI.xxx\fP, leaving the -basename. -.TP -.B e -Remove all but the trailing suffix. -.TP -.B p -Print the new command but do not execute it. -.TP -.B q -Quote the substituted words, escaping further substitutions. -.TP -.B x -Quote the substituted words as with -.BR q , -but break into words at -.B blanks -and newlines. -.TP -.B s/\fIold\fP/\fInew\fP/ -Substitute -.I new -for the first occurrence of -.I old -in the event line. Any delimiter can be used in place of /. The -final delimiter is optional if it is the last character of the -event line. The delimiter may be quoted in -.I old -and -.I new -with a single backslash. If & appears in -.IR new , -it is replaced by -.IR old . -A single backslash will quote the &. If -.I old -is null, it is set to the last -.I old -substituted, or, if no previous history substitutions took place, -the last -.I string -in a -.B !?\fIstring\fR\fB[?]\fR -search. -.TP -.B & -Repeat the previous substitution. -.TP -.B g -Cause changes to be applied over the entire event line. This is -used in conjunction with `\fB:s\fP' (e.g., `\fB:gs/\fIold\fP/\fInew\fP/\fR') -or `\fB:&\fP'. If used with -`\fB:s\fP', any delimiter can be used -in place of /, and the final delimiter is optional -if it is the last character of the event line. -An \fBa\fP may be used as a synonym for \fBg\fP. -.TP -.B G -Apply the following `\fBs\fP' modifier once to each word in the event line. -.PD -.SH "SHELL BUILTIN COMMANDS" -.\" start of bash_builtins -.zZ -.PP -Unless otherwise noted, each builtin command documented in this -section as accepting options preceded by -.B \- -accepts -.B \-\- -to signify the end of the options. -The \fB:\fP, \fBtrue\fP, \fBfalse\fP, and \fBtest\fP builtins -do not accept options and do not treat \fB\-\-\fP specially. -The \fBexit\fP, \fBlogout\fP, \fBbreak\fP, \fBcontinue\fP, \fBlet\fP, -and \fBshift\fP builtins accept and process arguments beginning with -\fB\-\fP without requiring \fB\-\-\fP. -Other builtins that accept arguments but are not specified as accepting -options interpret arguments beginning with \fB\-\fP as invalid options and -require \fB\-\-\fP to prevent this interpretation. -.sp .5 -.PD 0 -.TP -\fB:\fP [\fIarguments\fP] -.PD -No effect; the command does nothing beyond expanding -.I arguments -and performing any specified -redirections. A zero exit code is returned. -.TP -\fB .\| \fP \fIfilename\fP [\fIarguments\fP] -.PD 0 -.TP -\fBsource\fP \fIfilename\fP [\fIarguments\fP] -.PD -Read and execute commands from -.I filename -in the current -shell environment and return the exit status of the last command -executed from -.IR filename . -If -.I filename -does not contain a slash, filenames in -.SM -.B PATH -are used to find the directory containing -.IR filename . -The file searched for in -.SM -.B PATH -need not be executable. -When \fBbash\fP is not in \fIposix mode\fP, the current directory is -searched if no file is found in -.SM -.BR PATH . -If the -.B sourcepath -option to the -.B shopt -builtin command is turned off, the -.SM -.B PATH -is not searched. -If any \fIarguments\fP are supplied, they become the positional -parameters when \fIfilename\fP is executed. Otherwise the positional -parameters are unchanged. -The return status is the status of the last command exited within -the script (0 if no commands are executed), and false if -.I filename -is not found or cannot be read. -.TP -\fBalias\fP [\fB\-p\fP] [\fIname\fP[=\fIvalue\fP] ...] -\fBAlias\fP with no arguments or with the -.B \-p -option prints the list of aliases in the form -\fBalias\fP \fIname\fP=\fIvalue\fP on standard output. -When arguments are supplied, an alias is defined for -each \fIname\fP whose \fIvalue\fP is given. -A trailing space in \fIvalue\fP causes the next word to be -checked for alias substitution when the alias is expanded. -For each \fIname\fP in the argument list for which no \fIvalue\fP -is supplied, the name and value of the alias is printed. -\fBAlias\fP returns true unless a \fIname\fP is given for which -no alias has been defined. -.TP -\fBbg\fP [\fIjobspec\fP ...] -Resume each suspended job \fIjobspec\fP in the background, as if it -had been started with -.BR & . -If -.I jobspec -is not present, the shell's notion of the \fIcurrent job\fP is used. -.B bg -.I jobspec -returns 0 unless run when job control is disabled or, when run with -job control enabled, any specified \fIjobspec\fP was not found -or was started without job control. -.TP -\fBbind\fP [\fB\-m\fP \fIkeymap\fP] [\fB\-lpsvPSVX\fP] -.PD 0 -.TP -\fBbind\fP [\fB\-m\fP \fIkeymap\fP] [\fB\-q\fP \fIfunction\fP] [\fB\-u\fP \fIfunction\fP] [\fB\-r\fP \fIkeyseq\fP] -.TP -\fBbind\fP [\fB\-m\fP \fIkeymap\fP] \fB\-f\fP \fIfilename\fP -.TP -\fBbind\fP [\fB\-m\fP \fIkeymap\fP] \fB\-x\fP \fIkeyseq\fP:\fIshell\-command\fP -.TP -\fBbind\fP [\fB\-m\fP \fIkeymap\fP] \fIkeyseq\fP:\fIfunction\-name\fP -.TP -\fBbind\fP \fIreadline\-command\fP -.PD -Display current -.B readline -key and function bindings, bind a key sequence to a -.B readline -function or macro, or set a -.B readline -variable. -Each non-option argument is a command as it would appear in -.IR .inputrc , -but each binding or command must be passed as a separate argument; -e.g., '"\eC\-x\eC\-r": re\-read\-init\-file'. -Options, if supplied, have the following meanings: -.RS -.PD 0 -.TP -.B \-m \fIkeymap\fP -Use -.I keymap -as the keymap to be affected by the subsequent bindings. -Acceptable -.I keymap -names are -\fIemacs, emacs\-standard, emacs\-meta, emacs\-ctlx, vi, -vi\-move, vi\-command\fP, and -.IR vi\-insert . -\fIvi\fP is equivalent to \fIvi\-command\fP; \fIemacs\fP is -equivalent to \fIemacs\-standard\fP. -.TP -.B \-l -List the names of all \fBreadline\fP functions. -.TP -.B \-p -Display \fBreadline\fP function names and bindings in such a way -that they can be re-read. -.TP -.B \-P -List current \fBreadline\fP function names and bindings. -.TP -.B \-s -Display \fBreadline\fP key sequences bound to macros and the strings -they output in such a way that they can be re-read. -.TP -.B \-S -Display \fBreadline\fP key sequences bound to macros and the strings -they output. -.TP -.B \-v -Display \fBreadline\fP variable names and values in such a way that they -can be re-read. -.TP -.B \-V -List current \fBreadline\fP variable names and values. -.TP -.B \-f \fIfilename\fP -Read key bindings from \fIfilename\fP. -.TP -.B \-q \fIfunction\fP -Query about which keys invoke the named \fIfunction\fP. -.TP -.B \-u \fIfunction\fP -Unbind all keys bound to the named \fIfunction\fP. -.TP -.B \-r \fIkeyseq\fP -Remove any current binding for \fIkeyseq\fP. -.TP -.B \-x \fIkeyseq\fP:\fIshell\-command\fP -Cause \fIshell\-command\fP to be executed whenever \fIkeyseq\fP is -entered. -When \fIshell\-command\fP is executed, the shell sets the -.SM -.B READLINE_LINE -variable to the contents of the \fBreadline\fP line buffer and the -.SM -.B READLINE_POINT -variable to the current location of the insertion point. -If the executed command changes the value of -.SM -.B READLINE_LINE -or -.SM -.BR READLINE_POINT , -those new values will be reflected in the editing state. -.TP -.B \-X -List all key sequences bound to shell commands and the associated commands -in a format that can be reused as input. -.PD -.PP -The return value is 0 unless an unrecognized option is given or an -error occurred. -.RE -.TP -\fBbreak\fP [\fIn\fP] -Exit from within a -.BR for , -.BR while , -.BR until , -or -.B select -loop. If \fIn\fP is specified, break \fIn\fP levels. -.I n -must be \(>= 1. If -.I n -is greater than the number of enclosing loops, all enclosing loops -are exited. -The return value is 0 unless \fIn\fP is not greater than or equal to 1. -.TP -\fBbuiltin\fP \fIshell\-builtin\fP [\fIarguments\fP] -Execute the specified shell builtin, passing it -.IR arguments , -and return its exit status. -This is useful when defining a -function whose name is the same as a shell builtin, -retaining the functionality of the builtin within the function. -The \fBcd\fP builtin is commonly redefined this way. -The return status is false if -.I shell\-builtin -is not a shell builtin command. -.TP -\fBcaller\fP [\fIexpr\fP] -Returns the context of any active subroutine call (a shell function or -a script executed with the \fB.\fP or \fBsource\fP builtins). -Without \fIexpr\fP, \fBcaller\fP displays the line number and source -filename of the current subroutine call. -If a non-negative integer is supplied as \fIexpr\fP, \fBcaller\fP -displays the line number, subroutine name, and source file corresponding -to that position in the current execution call stack. This extra -information may be used, for example, to print a stack trace. The -current frame is frame 0. -The return value is 0 unless the shell is not executing a subroutine -call or \fIexpr\fP does not correspond to a valid position in the -call stack. -.TP -\fBcd\fP [\fB\-L\fP|[\fB\-P\fP [\fB\-e\fP]]] [\fIdir\fP] -Change the current directory to \fIdir\fP. -if \fIdir\fP is not supplied, the value of the -.SM -.B HOME -shell variable is the default. -Any additional arguments following \fIdir\fP are ignored. -The variable -.SM -.B CDPATH -defines the search path for the directory containing -.IR dir : -each directory name in -.SM -.B CDPATH -is searched for \fIdir\fP. -Alternative directory names in -.SM -.B CDPATH -are separated by a colon (:). A null directory name in -.SM -.B CDPATH -is the same as the current directory, i.e., ``\fB.\fP''. If -.I dir -begins with a slash (/), -then -.SM -.B CDPATH -is not used. The -.B \-P -option causes \fBcd\fP to use the physical directory structure -by resolving symbolic links while traversing \fIdir\fP and -before processing instances of \fI..\fP in \fIdir\fP (see also the -.B \-P -option to the -.B set -builtin command); the -.B \-L -option forces symbolic links to be followed by resolving the link -after processing instances of \fI..\fP in \fIdir\fP. -If \fI..\fP appears in \fIdir\fP, it is processed by removing the -immediately previous pathname component from \fIdir\fP, back to a slash -or the beginning of \fIdir\fP. -If the -.B \-e -option is supplied with -.BR \-P , -and the current working directory cannot be successfully determined -after a successful directory change, \fBcd\fP will return an unsuccessful -status. -An argument of -.B \- -is converted to -.SM -.B $OLDPWD -before the directory change is attempted. -If a non-empty directory name from -.SM -.B CDPATH -is used, or if -\fB\-\fP is the first argument, and the directory change is -successful, the absolute pathname of the new working directory is -written to the standard output. -The return value is true if the directory was successfully changed; -false otherwise. -.TP -\fBcommand\fP [\fB\-pVv\fP] \fIcommand\fP [\fIarg\fP ...] -Run -.I command -with -.I args -suppressing the normal shell function lookup. Only builtin -commands or commands found in the -.SM -.B PATH -are executed. If the -.B \-p -option is given, the search for -.I command -is performed using a default value for -.SM -.B PATH -that is guaranteed to find all of the standard utilities. -If either the -.B \-V -or -.B \-v -option is supplied, a description of -.I command -is printed. The -.B \-v -option causes a single word indicating the command or filename -used to invoke -.I command -to be displayed; the -.B \-V -option produces a more verbose description. -If the -.B \-V -or -.B \-v -option is supplied, the exit status is 0 if -.I command -was found, and 1 if not. If neither option is supplied and -an error occurred or -.I command -cannot be found, the exit status is 127. Otherwise, the exit status of the -.B command -builtin is the exit status of -.IR command . -.TP -\fBcompgen\fP [\fIoption\fP] [\fIword\fP] -Generate possible completion matches for \fIword\fP according to -the \fIoption\fPs, which may be any option accepted by the -.B complete -builtin with the exception of \fB\-p\fP and \fB\-r\fP, and write -the matches to the standard output. -When using the \fB\-F\fP or \fB\-C\fP options, the various shell variables -set by the programmable completion facilities, while available, will not -have useful values. -.sp 1 -The matches will be generated in the same way as if the programmable -completion code had generated them directly from a completion specification -with the same flags. -If \fIword\fP is specified, only those completions matching \fIword\fP -will be displayed. -.sp 1 -The return value is true unless an invalid option is supplied, or no -matches were generated. -.TP -\fBcomplete\fP [\fB\-abcdefgjksuv\fP] [\fB\-o\fP \fIcomp-option\fP] [\fB\-DE\fP] [\fB\-A\fP \fIaction\fP] [\fB\-G\fP \fIglobpat\fP] [\fB\-W\fP \fIwordlist\fP] [\fB\-F\fP \fIfunction\fP] [\fB\-C\fP \fIcommand\fP] -.br -[\fB\-X\fP \fIfilterpat\fP] [\fB\-P\fP \fIprefix\fP] [\fB\-S\fP \fIsuffix\fP] \fIname\fP [\fIname ...\fP] -.PD 0 -.TP -\fBcomplete\fP \fB\-pr\fP [\fB\-DE\fP] [\fIname\fP ...] -.PD -Specify how arguments to each \fIname\fP should be completed. -If the \fB\-p\fP option is supplied, or if no options are supplied, -existing completion specifications are printed in a way that allows -them to be reused as input. -The \fB\-r\fP option removes a completion specification for -each \fIname\fP, or, if no \fIname\fPs are supplied, all -completion specifications. -The \fB\-D\fP option indicates that the remaining options and actions should -apply to the ``default'' command completion; that is, completion attempted -on a command for which no completion has previously been defined. -The \fB\-E\fP option indicates that the remaining options and actions should -apply to ``empty'' command completion; that is, completion attempted on a -blank line. -.sp 1 -The process of applying these completion specifications when word completion -is attempted is described above under \fBProgrammable Completion\fP. -.sp 1 -Other options, if specified, have the following meanings. -The arguments to the \fB\-G\fP, \fB\-W\fP, and \fB\-X\fP options -(and, if necessary, the \fB\-P\fP and \fB\-S\fP options) -should be quoted to protect them from expansion before the -.B complete -builtin is invoked. -.RS -.PD 0 -.TP 8 -\fB\-o\fP \fIcomp-option\fP -The \fIcomp-option\fP controls several aspects of the compspec's behavior -beyond the simple generation of completions. -\fIcomp-option\fP may be one of: -.RS -.TP 8 -.B bashdefault -Perform the rest of the default \fBbash\fP completions if the compspec -generates no matches. -.TP 8 -.B default -Use readline's default filename completion if the compspec generates -no matches. -.TP 8 -.B dirnames -Perform directory name completion if the compspec generates no matches. -.TP 8 -.B filenames -Tell readline that the compspec generates filenames, so it can perform any -filename\-specific processing (like adding a slash to directory names, -quoting special characters, or suppressing trailing spaces). -Intended to be used with shell functions. -.TP 8 -.B noquote -Tell readline not to quote the completed words if they are filenames -(quoting filenames is the default). -.TP 8 -.B nospace -Tell readline not to append a space (the default) to words completed at -the end of the line. -.TP 8 -.B plusdirs -After any matches defined by the compspec are generated, -directory name completion is attempted and any -matches are added to the results of the other actions. -.RE -.TP 8 -\fB\-A\fP \fIaction\fP -The \fIaction\fP may be one of the following to generate a list of possible -completions: -.RS -.TP 8 -.B alias -Alias names. May also be specified as \fB\-a\fP. -.TP 8 -.B arrayvar -Array variable names. -.TP 8 -.B binding -\fBReadline\fP key binding names. -.TP 8 -.B builtin -Names of shell builtin commands. May also be specified as \fB\-b\fP. -.TP 8 -.B command -Command names. May also be specified as \fB\-c\fP. -.TP 8 -.B directory -Directory names. May also be specified as \fB\-d\fP. -.TP 8 -.B disabled -Names of disabled shell builtins. -.TP 8 -.B enabled -Names of enabled shell builtins. -.TP 8 -.B export -Names of exported shell variables. May also be specified as \fB\-e\fP. -.TP 8 -.B file -File names. May also be specified as \fB\-f\fP. -.TP 8 -.B function -Names of shell functions. -.TP 8 -.B group -Group names. May also be specified as \fB\-g\fP. -.TP 8 -.B helptopic -Help topics as accepted by the \fBhelp\fP builtin. -.TP 8 -.B hostname -Hostnames, as taken from the file specified by the -.SM -.B HOSTFILE -shell variable. -.TP 8 -.B job -Job names, if job control is active. May also be specified as \fB\-j\fP. -.TP 8 -.B keyword -Shell reserved words. May also be specified as \fB\-k\fP. -.TP 8 -.B running -Names of running jobs, if job control is active. -.TP 8 -.B service -Service names. May also be specified as \fB\-s\fP. -.TP 8 -.B setopt -Valid arguments for the \fB\-o\fP option to the \fBset\fP builtin. -.TP 8 -.B shopt -Shell option names as accepted by the \fBshopt\fP builtin. -.TP 8 -.B signal -Signal names. -.TP 8 -.B stopped -Names of stopped jobs, if job control is active. -.TP 8 -.B user -User names. May also be specified as \fB\-u\fP. -.TP 8 -.B variable -Names of all shell variables. May also be specified as \fB\-v\fP. -.RE -.TP 8 -\fB\-C\fP \fIcommand\fP -\fIcommand\fP is executed in a subshell environment, and its output is -used as the possible completions. -.TP 8 -\fB\-F\fP \fIfunction\fP -The shell function \fIfunction\fP is executed in the current shell -environment. -When the function is executed, -the first argument (\fB$1\fP) is the name of the command whose arguments are -being completed, -the second argument (\fB$2\fP) is the word being completed, -and the third argument (\fB$3\fP) is the word preceding the word being -completed on the current command line. -When it finishes, the possible completions are retrieved from the value -of the -.SM -.B COMPREPLY -array variable. -.TP 8 -\fB\-G\fP \fIglobpat\fP -The pathname expansion pattern \fIglobpat\fP is expanded to generate -the possible completions. -.TP 8 -\fB\-P\fP \fIprefix\fP -\fIprefix\fP is added at the beginning of each possible completion -after all other options have been applied. -.TP 8 -\fB\-S\fP \fIsuffix\fP -\fIsuffix\fP is appended to each possible completion -after all other options have been applied. -.TP 8 -\fB\-W\fP \fIwordlist\fP -The \fIwordlist\fP is split using the characters in the -.SM -.B IFS -special variable as delimiters, and each resultant word is expanded. -The possible completions are the members of the resultant list which -match the word being completed. -.TP 8 -\fB\-X\fP \fIfilterpat\fP -\fIfilterpat\fP is a pattern as used for pathname expansion. -It is applied to the list of possible completions generated by the -preceding options and arguments, and each completion matching -\fIfilterpat\fP is removed from the list. -A leading \fB!\fP in \fIfilterpat\fP negates the pattern; in this -case, any completion not matching \fIfilterpat\fP is removed. -.PD -.PP -The return value is true unless an invalid option is supplied, an option -other than \fB\-p\fP or \fB\-r\fP is supplied without a \fIname\fP -argument, an attempt is made to remove a completion specification for -a \fIname\fP for which no specification exists, or -an error occurs adding a completion specification. -.RE -.TP -\fBcompopt\fP [\fB\-o\fP \fIoption\fP] [\fB\-DE\fP] [\fB+o\fP \fIoption\fP] [\fIname\fP] -Modify completion options for each \fIname\fP according to the -\fIoption\fPs, or for the -currently-executing completion if no \fIname\fPs are supplied. -If no \fIoption\fPs are given, display the completion options for each -\fIname\fP or the current completion. -The possible values of \fIoption\fP are those valid for the \fBcomplete\fP -builtin described above. -The \fB\-D\fP option indicates that the remaining options should -apply to the ``default'' command completion; that is, completion attempted -on a command for which no completion has previously been defined. -The \fB\-E\fP option indicates that the remaining options should -apply to ``empty'' command completion; that is, completion attempted on a -blank line. -.sp 1 -The return value is true unless an invalid option is supplied, an attempt -is made to modify the options for a \fIname\fP for which no completion -specification exists, or an output error occurs. -.TP -\fBcontinue\fP [\fIn\fP] -Resume the next iteration of the enclosing -.BR for , -.BR while , -.BR until , -or -.B select -loop. -If -.I n -is specified, resume at the \fIn\fPth enclosing loop. -.I n -must be \(>= 1. If -.I n -is greater than the number of enclosing loops, the last enclosing loop -(the ``top-level'' loop) is resumed. -The return value is 0 unless \fIn\fP is not greater than or equal to 1. -.TP -\fBdeclare\fP [\fB\-aAfFgilrtux\fP] [\fB\-p\fP] [\fIname\fP[=\fIvalue\fP] ...] -.PD 0 -.TP -\fBtypeset\fP [\fB\-aAfFgilrtux\fP] [\fB\-p\fP] [\fIname\fP[=\fIvalue\fP] ...] -.PD -Declare variables and/or give them attributes. -If no \fIname\fPs are given then display the values of variables. -The -.B \-p -option will display the attributes and values of each -.IR name . -When -.B \-p -is used with \fIname\fP arguments, additional options are ignored. -When -.B \-p -is supplied without \fIname\fP arguments, it will display the attributes -and values of all variables having the attributes specified by the -additional options. -If no other options are supplied with \fB\-p\fP, \fBdeclare\fP will display -the attributes and values of all shell variables. The \fB\-f\fP option -will restrict the display to shell functions. -The -.B \-F -option inhibits the display of function definitions; only the -function name and attributes are printed. -If the \fBextdebug\fP shell option is enabled using \fBshopt\fP, -the source file name and line number where the function is defined -are displayed as well. The -.B \-F -option implies -.BR \-f . -The -.B \-g -option forces variables to be created or modified at the global scope, -even when \fBdeclare\fP is executed in a shell function. -It is ignored in all other cases. -The following options can -be used to restrict output to variables with the specified attribute or -to give variables attributes: -.RS -.PD 0 -.TP -.B \-a -Each \fIname\fP is an indexed array variable (see -.B Arrays -above). -.TP -.B \-A -Each \fIname\fP is an associative array variable (see -.B Arrays -above). -.TP -.B \-f -Use function names only. -.TP -.B \-i -The variable is treated as an integer; arithmetic evaluation (see -.SM -.B "ARITHMETIC EVALUATION" -above) is performed when the variable is assigned a value. -.TP -.B \-l -When the variable is assigned a value, all upper-case characters are -converted to lower-case. -The upper-case attribute is disabled. -.TP -.B \-r -Make \fIname\fPs readonly. These names cannot then be assigned values -by subsequent assignment statements or unset. -.TP -.B \-t -Give each \fIname\fP the \fItrace\fP attribute. -Traced functions inherit the \fBDEBUG\fP and \fBRETURN\fP traps from -the calling shell. -The trace attribute has no special meaning for variables. -.TP -.B \-u -When the variable is assigned a value, all lower-case characters are -converted to upper-case. -The lower-case attribute is disabled. -.TP -.B \-x -Mark \fIname\fPs for export to subsequent commands via the environment. -.PD -.PP -Using `+' instead of `\-' -turns off the attribute instead, -with the exceptions that \fB+a\fP -may not be used to destroy an array variable and \fB+r\fP will not -remove the readonly attribute. -When used in a function, -.B declare -and -.B typeset -make each -\fIname\fP local, as with the -.B local -command, -unless the \fB\-g\fP option is supplied. -If a variable name is followed by =\fIvalue\fP, the value of -the variable is set to \fIvalue\fP. -The return value is 0 unless an invalid option is encountered, -an attempt is made to define a function using -.if n ``\-f foo=bar'', -.if t \f(CW\-f foo=bar\fP, -an attempt is made to assign a value to a readonly variable, -an attempt is made to assign a value to an array variable without -using the compound assignment syntax (see -.B Arrays -above), one of the \fInames\fP is not a valid shell variable name, -an attempt is made to turn off readonly status for a readonly variable, -an attempt is made to turn off array status for an array variable, -or an attempt is made to display a non-existent function with \fB\-f\fP. -.RE -.TP -.B dirs [\fB\-clpv\fP] [+\fIn\fP] [\-\fIn\fP] -Without options, displays the list of currently remembered directories. -The default display is on a single line with directory names separated -by spaces. -Directories are added to the list with the -.B pushd -command; the -.B popd -command removes entries from the list. -.RS -.PD 0 -.TP -.B \-c -Clears the directory stack by deleting all of the entries. -.TP -.B \-l -Produces a listing using full pathnames; -the default listing format uses a tilde to denote the home directory. -.TP -.B \-p -Print the directory stack with one entry per line. -.TP -.B \-v -Print the directory stack with one entry per line, -prefixing each entry with its index in the stack. -.TP -\fB+\fP\fIn\fP -Displays the \fIn\fPth entry counting from the left of the list -shown by -.B dirs -when invoked without options, starting with zero. -.TP -\fB\-\fP\fIn\fP -Displays the \fIn\fPth entry counting from the right of the list -shown by -.B dirs -when invoked without options, starting with zero. -.PD -.PP -The return value is 0 unless an -invalid option is supplied or \fIn\fP indexes beyond the end -of the directory stack. -.RE -.TP -\fBdisown\fP [\fB\-ar\fP] [\fB\-h\fP] [\fIjobspec\fP ...] -Without options, remove each -.I jobspec -from the table of active jobs. -If -.I jobspec -is not present, and neither \fB\-a\fP nor \fB\-r\fP is supplied, -the shell's notion of the \fIcurrent job\fP is used. -If the \fB\-h\fP option is given, each -.I jobspec -is not removed from the table, but is marked so that -.SM -.B SIGHUP -is not sent to the job if the shell receives a -.SM -.BR SIGHUP . -If no -.I jobspec -is present, and neither the -.B \-a -nor the -.B \-r -option is supplied, the \fIcurrent job\fP is used. -If no -.I jobspec -is supplied, the -.B \-a -option means to remove or mark all jobs; the -.B \-r -option without a -.I jobspec -argument restricts operation to running jobs. -The return value is 0 unless a -.I jobspec -does not specify a valid job. -.TP -\fBecho\fP [\fB\-neE\fP] [\fIarg\fP ...] -Output the \fIarg\fPs, separated by spaces, followed by a newline. -The return status is 0 unless a write error occurs. -If \fB\-n\fP is specified, the trailing newline is -suppressed. If the \fB\-e\fP option is given, interpretation of -the following backslash-escaped characters is enabled. The -.B \-E -option disables the interpretation of these escape characters, -even on systems where they are interpreted by default. -The \fBxpg_echo\fP shell option may be used to -dynamically determine whether or not \fBecho\fP expands these -escape characters by default. -.B echo -does not interpret \fB\-\-\fP to mean the end of options. -.B echo -interprets the following escape sequences: -.RS -.PD 0 -.TP -.B \ea -alert (bell) -.TP -.B \eb -backspace -.TP -.B \ec -suppress further output -.TP -.B \ee -.TP -.B \eE -an escape character -.TP -.B \ef -form feed -.TP -.B \en -new line -.TP -.B \er -carriage return -.TP -.B \et -horizontal tab -.TP -.B \ev -vertical tab -.TP -.B \e\e -backslash -.TP -.B \e0\fInnn\fP -the eight-bit character whose value is the octal value \fInnn\fP -(zero to three octal digits) -.TP -.B \ex\fIHH\fP -the eight-bit character whose value is the hexadecimal value \fIHH\fP -(one or two hex digits) -.TP -.B \eu\fIHHHH\fP -the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value -\fIHHHH\fP (one to four hex digits) -.TP -.B \eU\fIHHHHHHHH\fP -the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value -\fIHHHHHHHH\fP (one to eight hex digits) -.PD -.RE -.TP -\fBenable\fP [\fB\-a\fP] [\fB\-dnps\fP] [\fB\-f\fP \fIfilename\fP] [\fIname\fP ...] -Enable and disable builtin shell commands. -Disabling a builtin allows a disk command which has the same name -as a shell builtin to be executed without specifying a full pathname, -even though the shell normally searches for builtins before disk commands. -If \fB\-n\fP is used, each \fIname\fP -is disabled; otherwise, -\fInames\fP are enabled. For example, to use the -.B test -binary found via the -.SM -.B PATH -instead of the shell builtin version, run -.if t \f(CWenable -n test\fP. -.if n ``enable -n test''. -The -.B \-f -option means to load the new builtin command -.I name -from shared object -.IR filename , -on systems that support dynamic loading. The -.B \-d -option will delete a builtin previously loaded with -.BR \-f . -If no \fIname\fP arguments are given, or if the -.B \-p -option is supplied, a list of shell builtins is printed. -With no other option arguments, the list consists of all enabled -shell builtins. -If \fB\-n\fP is supplied, only disabled builtins are printed. -If \fB\-a\fP is supplied, the list printed includes all builtins, with an -indication of whether or not each is enabled. -If \fB\-s\fP is supplied, the output is restricted to the POSIX -\fIspecial\fP builtins. -The return value is 0 unless a -.I name -is not a shell builtin or there is an error loading a new builtin -from a shared object. -.TP -\fBeval\fP [\fIarg\fP ...] -The \fIarg\fPs are read and concatenated together into a single -command. This command is then read and executed by the shell, and -its exit status is returned as the value of -.BR eval . -If there are no -.IR args , -or only null arguments, -.B eval -returns 0. -.TP -\fBexec\fP [\fB\-cl\fP] [\fB\-a\fP \fIname\fP] [\fIcommand\fP [\fIarguments\fP]] -If -.I command -is specified, it replaces the shell. -No new process is created. The -.I arguments -become the arguments to \fIcommand\fP. -If the -.B \-l -option is supplied, -the shell places a dash at the beginning of the zeroth argument passed to -.IR command . -This is what -.IR login (1) -does. The -.B \-c -option causes -.I command -to be executed with an empty environment. If -.B \-a -is supplied, the shell passes -.I name -as the zeroth argument to the executed command. -If -.I command -cannot be executed for some reason, a non-interactive shell exits, -unless the -.B execfail -shell option -is enabled. In that case, it returns failure. -An interactive shell returns failure if the file cannot be executed. -If -.I command -is not specified, any redirections take effect in the current shell, -and the return status is 0. If there is a redirection error, the -return status is 1. -.TP -\fBexit\fP [\fIn\fP] -Cause the shell to exit -with a status of \fIn\fP. If -.I n -is omitted, the exit status -is that of the last command executed. -A trap on -.SM -.B EXIT -is executed before the shell terminates. -.TP -\fBexport\fP [\fB\-fn\fP\^] [\fIname\fP[=\fIword\fP]] ... -.PD 0 -.TP -.B export \-p -.PD -The supplied -.I names -are marked for automatic export to the environment of -subsequently executed commands. If the -.B \-f -option is given, -the -.I names -refer to functions. -If no -.I names -are given, or if the -.B \-p -option is supplied, a list -of names of all exported variables is printed. -The -.B \-n -option causes the export property to be removed from each -\fIname\fP. -If a variable name is followed by =\fIword\fP, the value of -the variable is set to \fIword\fP. -.B export -returns an exit status of 0 unless an invalid option is -encountered, -one of the \fInames\fP is not a valid shell variable name, or -.B \-f -is supplied with a -.I name -that is not a function. -.TP -\fBfc\fP [\fB\-e\fP \fIename\fP] [\fB\-lnr\fP] [\fIfirst\fP] [\fIlast\fP] -.PD 0 -.TP -\fBfc\fP \fB\-s\fP [\fIpat\fP=\fIrep\fP] [\fIcmd\fP] -.PD -The first form selects a range of commands from -.I first -to -.I last -from the history list and displays or edits and re-executes them. -.I First -and -.I last -may be specified as a string (to locate the last command beginning -with that string) or as a number (an index into the history list, -where a negative number is used as an offset from the current -command number). If -.I last -is not specified it is set to -the current command for listing (so that -.if n ``fc \-l \-10'' -.if t \f(CWfc \-l \-10\fP -prints the last 10 commands) and to -.I first -otherwise. -If -.I first -is not specified it is set to the previous -command for editing and \-16 for listing. -.sp 1 -The -.B \-n -option suppresses -the command numbers when listing. The -.B \-r -option reverses the order of -the commands. If the -.B \-l -option is given, -the commands are listed on -standard output. Otherwise, the editor given by -.I ename -is invoked -on a file containing those commands. If -.I ename -is not given, the -value of the -.SM -.B FCEDIT -variable is used, and -the value of -.SM -.B EDITOR -if -.SM -.B FCEDIT -is not set. If neither variable is set, -.FN vi -is used. When editing is complete, the edited commands are -echoed and executed. -.sp 1 -In the second form, \fIcommand\fP is re-executed after each instance -of \fIpat\fP is replaced by \fIrep\fP. -\fICommand\fP is intepreted the same as \fIfirst\fP above. -A useful alias to use with this is -.if n ``r="fc -s"'', -.if t \f(CWr='fc \-s'\fP, -so that typing -.if n ``r cc'' -.if t \f(CWr cc\fP -runs the last command beginning with -.if n ``cc'' -.if t \f(CWcc\fP -and typing -.if n ``r'' -.if t \f(CWr\fP -re-executes the last command. -.sp 1 -If the first form is used, the return value is 0 unless an invalid -option is encountered or -.I first -or -.I last -specify history lines out of range. -If the -.B \-e -option is supplied, the return value is the value of the last -command executed or failure if an error occurs with the temporary -file of commands. If the second form is used, the return status -is that of the command re-executed, unless -.I cmd -does not specify a valid history line, in which case -.B fc -returns failure. -.TP -\fBfg\fP [\fIjobspec\fP] -Resume -.I jobspec -in the foreground, and make it the current job. -If -.I jobspec -is not present, the shell's notion of the \fIcurrent job\fP is used. -The return value is that of the command placed into the foreground, -or failure if run when job control is disabled or, when run with -job control enabled, if -.I jobspec -does not specify a valid job or -.I jobspec -specifies a job that was started without job control. -.TP -\fBgetopts\fP \fIoptstring\fP \fIname\fP [\fIargs\fP] -.B getopts -is used by shell procedures to parse positional parameters. -.I optstring -contains the option characters to be recognized; if a character -is followed by a colon, the option is expected to have an -argument, which should be separated from it by white space. -The colon and question mark characters may not be used as -option characters. -Each time it is invoked, -.B getopts -places the next option in the shell variable -.IR name , -initializing -.I name -if it does not exist, -and the index of the next argument to be processed into the -variable -.SM -.BR OPTIND . -.SM -.B OPTIND -is initialized to 1 each time the shell or a shell script -is invoked. When an option requires an argument, -.B getopts -places that argument into the variable -.SM -.BR OPTARG . -The shell does not reset -.SM -.B OPTIND -automatically; it must be manually reset between multiple -calls to -.B getopts -within the same shell invocation if a new set of parameters -is to be used. -.sp 1 -When the end of options is encountered, \fBgetopts\fP exits with a -return value greater than zero. -.SM -.B OPTIND -is set to the index of the first non-option argument, -and \fIname\fP is set to ?. -.sp 1 -.B getopts -normally parses the positional parameters, but if more arguments are -given in -.IR args , -.B getopts -parses those instead. -.sp 1 -.B getopts -can report errors in two ways. If the first character of -.I optstring -is a colon, -.I silent -error reporting is used. In normal operation, diagnostic messages -are printed when invalid options or missing option arguments are -encountered. -If the variable -.SM -.B OPTERR -is set to 0, no error messages will be displayed, even if the first -character of -.I optstring -is not a colon. -.sp 1 -If an invalid option is seen, -.B getopts -places ? into -.I name -and, if not silent, -prints an error message and unsets -.SM -.BR OPTARG . -If -.B getopts -is silent, -the option character found is placed in -.SM -.B OPTARG -and no diagnostic message is printed. -.sp 1 -If a required argument is not found, and -.B getopts -is not silent, -a question mark (\^\fB?\fP\^) is placed in -.IR name , -.SM -.B OPTARG -is unset, and a diagnostic message is printed. -If -.B getopts -is silent, then a colon (\^\fB:\fP\^) is placed in -.I name -and -.SM -.B OPTARG -is set to the option character found. -.sp 1 -.B getopts -returns true if an option, specified or unspecified, is found. -It returns false if the end of options is encountered or an -error occurs. -.TP -\fBhash\fP [\fB\-lr\fP] [\fB\-p\fP \fIfilename\fP] [\fB\-dt\fP] [\fIname\fP] -Each time \fBhash\fP is invoked, -the full pathname of the command -.I name -is determined by searching -the directories in -.B $PATH -and remembered. Any previously-remembered pathname is discarded. -If the -.B \-p -option is supplied, no path search is performed, and -.I filename -is used as the full filename of the command. -The -.B \-r -option causes the shell to forget all -remembered locations. -The -.B \-d -option causes the shell to forget the remembered location of each \fIname\fP. -If the -.B \-t -option is supplied, the full pathname to which each \fIname\fP corresponds -is printed. If multiple \fIname\fP arguments are supplied with \fB\-t\fP, -the \fIname\fP is printed before the hashed full pathname. -The -.B \-l -option causes output to be displayed in a format that may be reused as input. -If no arguments are given, or if only \fB\-l\fP is supplied, -information about remembered commands is printed. -The return status is true unless a -.I name -is not found or an invalid option is supplied. -.TP -\fBhelp\fP [\fB\-dms\fP] [\fIpattern\fP] -Display helpful information about builtin commands. If -.I pattern -is specified, -.B help -gives detailed help on all commands matching -.IR pattern ; -otherwise help for all the builtins and shell control structures -is printed. -.RS -.PD 0 -.TP -.B \-d -Display a short description of each \fIpattern\fP -.TP -.B \-m -Display the description of each \fIpattern\fP in a manpage-like format -.TP -.B \-s -Display only a short usage synopsis for each \fIpattern\fP -.PD -.PP -The return status is 0 unless no command matches -.IR pattern . -.RE -.TP -\fBhistory [\fIn\fP] -.PD 0 -.TP -\fBhistory\fP \fB\-c\fP -.TP -\fBhistory \-d\fP \fIoffset\fP -.TP -\fBhistory\fP \fB\-anrw\fP [\fIfilename\fP] -.TP -\fBhistory\fP \fB\-p\fP \fIarg\fP [\fIarg ...\fP] -.TP -\fBhistory\fP \fB\-s\fP \fIarg\fP [\fIarg ...\fP] -.PD -With no options, display the command -history list with line numbers. Lines listed -with a -.B * -have been modified. An argument of -.I n -lists only the last -.I n -lines. -If the shell variable -.SM -.B HISTTIMEFORMAT -is set and not null, -it is used as a format string for \fIstrftime\fP(3) to display -the time stamp associated with each displayed history entry. -No intervening blank is printed between the formatted time stamp -and the history line. -If \fIfilename\fP is supplied, it is used as the -name of the history file; if not, the value of -.SM -.B HISTFILE -is used. Options, if supplied, have the following meanings: -.RS -.PD 0 -.TP -.B \-c -Clear the history list by deleting all the entries. -.TP -\fB\-d\fP \fIoffset\fP -Delete the history entry at position \fIoffset\fP. -.TP -.B \-a -Append the ``new'' history lines (history lines entered since the -beginning of the current \fBbash\fP session) to the history file. -.TP -.B \-n -Read the history lines not already read from the history -file into the current history list. These are lines -appended to the history file since the beginning of the -current \fBbash\fP session. -.TP -.B \-r -Read the contents of the history file -and append them to the current history list. -.TP -.B \-w -Write the current history list to the history file, overwriting the -history file's contents. -.TP -.B \-p -Perform history substitution on the following \fIargs\fP and display -the result on the standard output. -Does not store the results in the history list. -Each \fIarg\fP must be quoted to disable normal history expansion. -.TP -.B \-s -Store the -.I args -in the history list as a single entry. The last command in the -history list is removed before the -.I args -are added. -.PD -.PP -If the -.SM -.B HISTTIMEFORMAT -variable is set, the time stamp information -associated with each history entry is written to the history file, -marked with the history comment character. -When the history file is read, lines beginning with the history -comment character followed immediately by a digit are interpreted -as timestamps for the previous history line. -The return value is 0 unless an invalid option is encountered, an -error occurs while reading or writing the history file, an invalid -\fIoffset\fP is supplied as an argument to \fB\-d\fP, or the -history expansion supplied as an argument to \fB\-p\fP fails. -.RE -.TP -\fBjobs\fP [\fB\-lnprs\fP] [ \fIjobspec\fP ... ] -.PD 0 -.TP -\fBjobs\fP \fB\-x\fP \fIcommand\fP [ \fIargs\fP ... ] -.PD -The first form lists the active jobs. The options have the following -meanings: -.RS -.PD 0 -.TP -.B \-l -List process IDs -in addition to the normal information. -.TP -.B \-n -Display information only about jobs that have changed status since -the user was last notified of their status. -.TP -.B \-p -List only the process ID of the job's process group -leader. -.TP -.B \-r -Display only running jobs. -.TP -.B \-s -Display only stopped jobs. -.PD -.PP -If -.I jobspec -is given, output is restricted to information about that job. -The return status is 0 unless an invalid option is encountered -or an invalid -.I jobspec -is supplied. -.PP -If the -.B \-x -option is supplied, -.B jobs -replaces any -.I jobspec -found in -.I command -or -.I args -with the corresponding process group ID, and executes -.I command -passing it -.IR args , -returning its exit status. -.RE -.TP -\fBkill\fP [\fB\-s\fP \fIsigspec\fP | \fB\-n\fP \fIsignum\fP | \fB\-\fP\fIsigspec\fP] [\fIpid\fP | \fIjobspec\fP] ... -.PD 0 -.TP -\fBkill\fP \fB\-l\fP [\fIsigspec\fP | \fIexit_status\fP] -.PD -Send the signal named by -.I sigspec -or -.I signum -to the processes named by -.I pid -or -.IR jobspec . -.I sigspec -is either a case-insensitive signal name such as -.SM -.B SIGKILL -(with or without the -.SM -.B SIG -prefix) or a signal number; -.I signum -is a signal number. -If -.I sigspec -is not present, then -.SM -.B SIGTERM -is assumed. -An argument of -.B \-l -lists the signal names. -If any arguments are supplied when -.B \-l -is given, the names of the signals corresponding to the arguments are -listed, and the return status is 0. -The \fIexit_status\fP argument to -.B \-l -is a number specifying either a signal number or the exit status of -a process terminated by a signal. -.B kill -returns true if at least one signal was successfully sent, or false -if an error occurs or an invalid option is encountered. -.TP -\fBlet\fP \fIarg\fP [\fIarg\fP ...] -Each -.I arg -is an arithmetic expression to be evaluated (see -.SM -.B "ARITHMETIC EVALUATION" -above). -If the last -.I arg -evaluates to 0, -.B let -returns 1; 0 is returned otherwise. -.TP -\fBlocal\fP [\fIoption\fP] [\fIname\fP[=\fIvalue\fP] ...] -For each argument, a local variable named -.I name -is created, and assigned -.IR value . -The \fIoption\fP can be any of the options accepted by \fBdeclare\fP. -When -.B local -is used within a function, it causes the variable -.I name -to have a visible scope restricted to that function and its children. -With no operands, -.B local -writes a list of local variables to the standard output. It is -an error to use -.B local -when not within a function. The return status is 0 unless -.B local -is used outside a function, an invalid -.I name -is supplied, or -\fIname\fP is a readonly variable. -.TP -.B logout -Exit a login shell. -.TP -\fBmapfile\fP [\fB\-n\fP \fIcount\fP] [\fB\-O\fP \fIorigin\fP] [\fB\-s\fP \fIcount\fP] [\fB\-t\fP] [\fB\-u\fP \fIfd\fP] [\fB\-C\fP \fIcallback\fP] [\fB\-c\fP \fIquantum\fP] [\fIarray\fP] -.PD 0 -.TP -\fBreadarray\fP [\fB\-n\fP \fIcount\fP] [\fB\-O\fP \fIorigin\fP] [\fB\-s\fP \fIcount\fP] [\fB\-t\fP] [\fB\-u\fP \fIfd\fP] [\fB\-C\fP \fIcallback\fP] [\fB\-c\fP \fIquantum\fP] [\fIarray\fP] -.PD -Read lines from the standard input into the indexed array variable -.IR array , -or from file descriptor -.IR fd -if the -.B \-u -option is supplied. -The variable -.SM -.B MAPFILE -is the default \fIarray\fP. -Options, if supplied, have the following meanings: -.RS -.PD 0 -.TP -.B \-n -Copy at most -.I count -lines. If \fIcount\fP is 0, all lines are copied. -.TP -.B \-O -Begin assigning to -.I array -at index -.IR origin . -The default index is 0. -.TP -.B \-s -Discard the first \fIcount\fP lines read. -.TP -.B \-t -Remove a trailing newline from each line read. -.TP -.B \-u -Read lines from file descriptor \fIfd\fP instead of the standard input. -.TP -.B \-C -Evaluate -.I callback -each time \fIquantum\fP lines are read. The \fB\-c\fP option specifies -.IR quantum . -.TP -.B \-c -Specify the number of lines read between each call to -.IR callback . -.PD -.PP -If -.B \-C -is specified without -.BR \-c , -the default quantum is 5000. -When \fIcallback\fP is evaluated, it is supplied the index of the next -array element to be assigned and the line to be assigned to that element -as additional arguments. -\fIcallback\fP is evaluated after the line is read but before the -array element is assigned. -.PP -If not supplied with an explicit origin, \fBmapfile\fP will clear \fIarray\fP -before assigning to it. -.PP -\fBmapfile\fP returns successfully unless an invalid option or option -argument is supplied, \fIarray\fP is invalid or unassignable, or if -\fIarray\fP is not an indexed array. -.RE -.TP -\fBpopd\fP [\-\fBn\fP] [+\fIn\fP] [\-\fIn\fP] -Removes entries from the directory stack. With no arguments, -removes the top directory from the stack, and performs a -.B cd -to the new top directory. -Arguments, if supplied, have the following meanings: -.RS -.PD 0 -.TP -.B \-n -Suppresses the normal change of directory when removing directories -from the stack, so that only the stack is manipulated. -.TP -\fB+\fP\fIn\fP -Removes the \fIn\fPth entry counting from the left of the list -shown by -.BR dirs , -starting with zero. For example: -.if n ``popd +0'' -.if t \f(CWpopd +0\fP -removes the first directory, -.if n ``popd +1'' -.if t \f(CWpopd +1\fP -the second. -.TP -\fB\-\fP\fIn\fP -Removes the \fIn\fPth entry counting from the right of the list -shown by -.BR dirs , -starting with zero. For example: -.if n ``popd -0'' -.if t \f(CWpopd -0\fP -removes the last directory, -.if n ``popd -1'' -.if t \f(CWpopd -1\fP -the next to last. -.PD -.PP -If the -.B popd -command is successful, a -.B dirs -is performed as well, and the return status is 0. -.B popd -returns false if an invalid option is encountered, the directory stack -is empty, a non-existent directory stack entry is specified, or the -directory change fails. -.RE -.TP -\fBprintf\fP [\fB\-v\fP \fIvar\fP] \fIformat\fP [\fIarguments\fP] -Write the formatted \fIarguments\fP to the standard output under the -control of the \fIformat\fP. -The \fB\-v\fP option causes the output to be assigned to the variable -\fIvar\fP rather than being printed to the standard output. -.sp 1 -The \fIformat\fP is a character string which contains three types of objects: -plain characters, which are simply copied to standard output, character -escape sequences, which are converted and copied to the standard output, and -format specifications, each of which causes printing of the next successive -\fIargument\fP. -In addition to the standard \fIprintf\fP(1) format specifications, -\fBprintf\fP interprets the following extensions: -.RS -.PD 0 -.TP -.B %b -causes -\fBprintf\fP to expand backslash escape sequences in the corresponding -\fIargument\fP (except that \fB\ec\fP terminates output, backslashes in -\fB\e\(aq\fP, \fB\e"\fP, and \fB\e?\fP are not removed, and octal escapes -beginning with \fB\e0\fP may contain up to four digits). -.TP -.B %q -causes \fBprintf\fP to output the corresponding -\fIargument\fP in a format that can be reused as shell input. -.TP -.B %(\fIdatefmt\fP)T -causes \fBprintf\fP to output the date-time string resulting from using -\fIdatefmt\fP as a format string for \fIstrftime\fP(3). The corresponding -\fIargument\fP is an integer representing the number of seconds since the -epoch. Two special argument values may be used: -1 represents the current -time, and -2 represents the time the shell was invoked. -.PD -.PP -Arguments to non-string format specifiers are treated as C constants, -except that a leading plus or minus sign is allowed, and if the leading -character is a single or double quote, the value is the ASCII value of -the following character. -.PP -The \fIformat\fP is reused as necessary to consume all of the \fIarguments\fP. -If the \fIformat\fP requires more \fIarguments\fP than are supplied, the -extra format specifications behave as if a zero value or null string, as -appropriate, had been supplied. -The return value is zero on success, non-zero on failure. -.RE -.TP -\fBpushd\fP [\fB\-n\fP] [+\fIn\fP] [\-\fIn\fP] -.PD 0 -.TP -\fBpushd\fP [\fB\-n\fP] [\fIdir\fP] -.PD -Adds a directory to the top of the directory stack, or rotates -the stack, making the new top of the stack the current working -directory. With no arguments, exchanges the top two directories -and returns 0, unless the directory stack is empty. -Arguments, if supplied, have the following meanings: -.RS -.PD 0 -.TP -.B \-n -Suppresses the normal change of directory when adding directories -to the stack, so that only the stack is manipulated. -.TP -\fB+\fP\fIn\fP -Rotates the stack so that the \fIn\fPth directory -(counting from the left of the list shown by -.BR dirs , -starting with zero) -is at the top. -.TP -\fB\-\fP\fIn\fP -Rotates the stack so that the \fIn\fPth directory -(counting from the right of the list shown by -.BR dirs , -starting with zero) is at the top. -.TP -.I dir -Adds -.I dir -to the directory stack at the top, making it the -new current working directory as if it had been supplied as the argument -to the \fBcd\fP builtin. -.PD -.PP -If the -.B pushd -command is successful, a -.B dirs -is performed as well. -If the first form is used, -.B pushd -returns 0 unless the cd to -.I dir -fails. With the second form, -.B pushd -returns 0 unless the directory stack is empty, -a non-existent directory stack element is specified, -or the directory change to the specified new current directory -fails. -.RE -.TP -\fBpwd\fP [\fB\-LP\fP] -Print the absolute pathname of the current working directory. -The pathname printed contains no symbolic links if the -.B \-P -option is supplied or the -.B \-o physical -option to the -.B set -builtin command is enabled. -If the -.B \-L -option is used, the pathname printed may contain symbolic links. -The return status is 0 unless an error occurs while -reading the name of the current directory or an -invalid option is supplied. -.TP -\fBread\fP [\fB\-ers\fP] [\fB\-a\fP \fIaname\fP] [\fB\-d\fP \fIdelim\fP] [\fB\-i\fP \fItext\fP] [\fB\-n\fP \fInchars\fP] [\fB\-N\fP \fInchars\fP] [\fB\-p\fP \fIprompt\fP] [\fB\-t\fP \fItimeout\fP] [\fB\-u\fP \fIfd\fP] [\fIname\fP ...] -One line is read from the standard input, or from the file descriptor -\fIfd\fP supplied as an argument to the \fB\-u\fP option, and the first word -is assigned to the first -.IR name , -the second word to the second -.IR name , -and so on, with leftover words and their intervening separators assigned -to the last -.IR name . -If there are fewer words read from the input stream than names, -the remaining names are assigned empty values. -The characters in -.SM -.B IFS -are used to split the line into words. -The backslash character (\fB\e\fP) may be used to remove any special -meaning for the next character read and for line continuation. -Options, if supplied, have the following meanings: -.RS -.PD 0 -.TP -.B \-a \fIaname\fP -The words are assigned to sequential indices -of the array variable -.IR aname , -starting at 0. -.I aname -is unset before any new values are assigned. -Other \fIname\fP arguments are ignored. -.TP -.B \-d \fIdelim\fP -The first character of \fIdelim\fP is used to terminate the input line, -rather than newline. -.TP -.B \-e -If the standard input -is coming from a terminal, -.B readline -(see -.SM -.B READLINE -above) is used to obtain the line. -Readline uses the current (or default, if line editing was not previously -active) editing settings. -.TP -.B \-i \fItext\fP -If -.B readline -is being used to read the line, \fItext\fP is placed into the editing -buffer before editing begins. -.TP -.B \-n \fInchars\fP -\fBread\fP returns after reading \fInchars\fP characters rather than -waiting for a complete line of input, but honor a delimiter if fewer -than \fInchars\fP characters are read before the delimiter. -.TP -.B \-N \fInchars\fP -\fBread\fP returns after reading exactly \fInchars\fP characters rather -than waiting for a complete line of input, unless EOF is encountered or -\fBread\fP times out. -Delimiter characters encountered in the input are -not treated specially and do not cause \fBread\fP to return until -\fInchars\fP characters are read. -.TP -.B \-p \fIprompt\fP -Display \fIprompt\fP on standard error, without a -trailing newline, before attempting to read any input. The prompt -is displayed only if input is coming from a terminal. -.TP -.B \-r -Backslash does not act as an escape character. -The backslash is considered to be part of the line. -In particular, a backslash-newline pair may not be used as a line -continuation. -.TP -.B \-s -Silent mode. If input is coming from a terminal, characters are -not echoed. -.TP -.B \-t \fItimeout\fP -Cause \fBread\fP to time out and return failure if a complete line of -input is not read within \fItimeout\fP seconds. -\fItimeout\fP may be a decimal number with a fractional portion following -the decimal point. -This option is only effective if \fBread\fP is reading input from a -terminal, pipe, or other special file; it has no effect when reading -from regular files. -If \fItimeout\fP is 0, \fBread\fP returns immediately, without trying to -read any data. The exit statis is 0 if input is available on -the specified file descriptor, non-zero otherwise. -The exit status is greater than 128 if the timeout is exceeded. -.TP -.B \-u \fIfd\fP -Read input from file descriptor \fIfd\fP. -.PD -.PP -If no -.I names -are supplied, the line read is assigned to the variable -.SM -.BR REPLY . -The return code is zero, unless end-of-file is encountered, \fBread\fP -times out (in which case the return code is greater than 128), -a variable assignment error (such as assigning to a readonly variable) occurs, -or an invalid file descriptor is supplied as the argument to \fB\-u\fP. -.RE -.TP -\fBreadonly\fP [\fB\-aAf\fP] [\fB\-p\fP] [\fIname\fP[=\fIword\fP] ...] -.PD -The given -\fInames\fP are marked readonly; the values of these -.I names -may not be changed by subsequent assignment. -If the -.B \-f -option is supplied, the functions corresponding to the -\fInames\fP are so -marked. -The -.B \-a -option restricts the variables to indexed arrays; the -.B \-A -option restricts the variables to associative arrays. -If both options are supplied, -.B \-A -takes precedence. -If no -.I name -arguments are given, or if the -.B \-p -option is supplied, a list of all readonly names is printed. -The other options may be used to restrict the output to a subset of -the set of readonly names. -The -.B \-p -option causes output to be displayed in a format that -may be reused as input. -If a variable name is followed by =\fIword\fP, the value of -the variable is set to \fIword\fP. -The return status is 0 unless an invalid option is encountered, -one of the -.I names -is not a valid shell variable name, or -.B \-f -is supplied with a -.I name -that is not a function. -.TP -\fBreturn\fP [\fIn\fP] -Causes a function to stop executing and return the value specified by -.I n -to its caller. -If -.I n -is omitted, the return status is that of the last command -executed in the function body. If -.B return -is used outside a function, -but during execution of a script by the -.B . -(\fBsource\fP) command, it causes the shell to stop executing -that script and return either -.I n -or the exit status of the last command executed within the -script as the exit status of the script. -If \fIn\fP is supplied, the return value is its least significant -8 bits. -The return status is non-zero if -.B return -is supplied a non-numeric argument, or -is used outside a -function and not during execution of a script by \fB.\fP\^ or \fBsource\fP. -Any command associated with the \fBRETURN\fP trap is executed -before execution resumes after the function or script. -.TP -\fBset\fP [\fB\-\-abefhkmnptuvxBCEHPT\fP] [\fB\-o\fP \fIoption\-name\fP] [\fIarg\fP ...] -.PD 0 -.TP -\fBset\fP [\fB+abefhkmnptuvxBCEHPT\fP] [\fB+o\fP \fIoption\-name\fP] [\fIarg\fP ...] -.PD -Without options, the name and value of each shell variable are displayed -in a format that can be reused as input -for setting or resetting the currently-set variables. -Read-only variables cannot be reset. -In \fIposix mode\fP, only shell variables are listed. -The output is sorted according to the current locale. -When options are specified, they set or unset shell attributes. -Any arguments remaining after option processing are treated -as values for the positional parameters and are assigned, in order, to -.BR $1 , -.BR $2 , -.B ... -.BR $\fIn\fP . -Options, if specified, have the following meanings: -.RS -.PD 0 -.TP 8 -.B \-a -Automatically mark variables and functions which are modified or -created for export to the environment of subsequent commands. -.TP 8 -.B \-b -Report the status of terminated background jobs -immediately, rather than before the next primary prompt. This is -effective only when job control is enabled. -.TP 8 -.B \-e -Exit immediately if a -\fIpipeline\fP (which may consist of a single \fIsimple command\fP), -a \fIlist\fP, -or a \fIcompound command\fP -(see -.SM -.B SHELL GRAMMAR -above), exits with a non-zero status. -The shell does not exit if the -command that fails is part of the command list immediately following a -.B while -or -.B until -keyword, -part of the test following the -.B if -or -.B elif -reserved words, part of any command executed in a -.B && -or -.B || -list except the command following the final \fB&&\fP or \fB||\fP, -any command in a pipeline but the last, -or if the command's return value is -being inverted with -.BR ! . -If a compound command other than a subshell -returns a non-zero status because a command failed -while \fB\-e\fP was being ignored, the shell does not exit. -A trap on \fBERR\fP, if set, is executed before the shell exits. -This option applies to the shell environment and each subshell environment -separately (see -.SM -.B "COMMAND EXECUTION ENVIRONMENT" -above), and may cause -subshells to exit before executing all the commands in the subshell. -.TP 8 -.B \-f -Disable pathname expansion. -.TP 8 -.B \-h -Remember the location of commands as they are looked up for execution. -This is enabled by default. -.TP 8 -.B \-k -All arguments in the form of assignment statements -are placed in the environment for a command, not just -those that precede the command name. -.TP 8 -.B \-m -Monitor mode. Job control is enabled. This option is on -by default for interactive shells on systems that support -it (see -.SM -.B JOB CONTROL -above). -All processes run in a separate process group. -When a background job completes, the shell prints a line -containing its exit status. -.TP 8 -.B \-n -Read commands but do not execute them. This may be used to -check a shell script for syntax errors. This is ignored by -interactive shells. -.TP 8 -.B \-o \fIoption\-name\fP -The \fIoption\-name\fP can be one of the following: -.RS -.TP 8 -.B allexport -Same as -.BR \-a . -.TP 8 -.B braceexpand -Same as -.BR \-B . -.TP 8 -.B emacs -Use an emacs-style command line editing interface. This is enabled -by default when the shell is interactive, unless the shell is started -with the -.B \-\-noediting -option. -This also affects the editing interface used for \fBread \-e\fP. -.TP 8 -.B errexit -Same as -.BR \-e . -.TP 8 -.B errtrace -Same as -.BR \-E . -.TP 8 -.B functrace -Same as -.BR \-T . -.TP 8 -.B hashall -Same as -.BR \-h . -.TP 8 -.B histexpand -Same as -.BR \-H . -.TP 8 -.B history -Enable command history, as described above under -.SM -.BR HISTORY . -This option is on by default in interactive shells. -.TP 8 -.B ignoreeof -The effect is as if the shell command -.if t \f(CWIGNOREEOF=10\fP -.if n ``IGNOREEOF=10'' -had been executed -(see -.B Shell Variables -above). -.TP 8 -.B keyword -Same as -.BR \-k . -.TP 8 -.B monitor -Same as -.BR \-m . -.TP 8 -.B noclobber -Same as -.BR \-C . -.TP 8 -.B noexec -Same as -.BR \-n . -.TP 8 -.B noglob -Same as -.BR \-f . -.TP 8 -.B nolog -Currently ignored. -.TP 8 -.B notify -Same as -.BR \-b . -.TP 8 -.B nounset -Same as -.BR \-u . -.TP 8 -.B onecmd -Same as -.BR \-t . -.TP 8 -.B physical -Same as -.BR \-P . -.TP 8 -.B pipefail -If set, the return value of a pipeline is the value of the last -(rightmost) command to exit with a non-zero status, or zero if all -commands in the pipeline exit successfully. -This option is disabled by default. -.TP 8 -.B posix -Change the behavior of -.B bash -where the default operation differs -from the POSIX standard to match the standard (\fIposix mode\fP). -.TP 8 -.B privileged -Same as -.BR \-p . -.TP 8 -.B verbose -Same as -.BR \-v . -.TP 8 -.B vi -Use a vi-style command line editing interface. -This also affects the editing interface used for \fBread \-e\fP. -.TP 8 -.B xtrace -Same as -.BR \-x . -.sp .5 -.PP -If -.B \-o -is supplied with no \fIoption\-name\fP, the values of the current options are -printed. -If -.B +o -is supplied with no \fIoption\-name\fP, a series of -.B set -commands to recreate the current option settings is displayed on -the standard output. -.RE -.TP 8 -.B \-p -Turn on -.I privileged -mode. In this mode, the -.SM -.B $ENV -and -.SM -.B $BASH_ENV -files are not processed, shell functions are not inherited from the -environment, and the -.SM -.BR SHELLOPTS , -.SM -.BR BASHOPTS , -.SM -.BR CDPATH , -and -.SM -.B GLOBIGNORE -variables, if they appear in the environment, are ignored. -If the shell is started with the effective user (group) id not equal to the -real user (group) id, and the \fB\-p\fP option is not supplied, these actions -are taken and the effective user id is set to the real user id. -If the \fB\-p\fP option is supplied at startup, the effective user id is -not reset. -Turning this option off causes the effective user -and group ids to be set to the real user and group ids. -.TP 8 -.B \-t -Exit after reading and executing one command. -.TP 8 -.B \-u -Treat unset variables and parameters other than the special -parameters "@" and "*" as an error when performing -parameter expansion. If expansion is attempted on an -unset variable or parameter, the shell prints an error message, and, -if not interactive, exits with a non-zero status. -.TP 8 -.B \-v -Print shell input lines as they are read. -.TP 8 -.B \-x -After expanding each \fIsimple command\fP, -\fBfor\fP command, \fBcase\fP command, \fBselect\fP command, or -arithmetic \fBfor\fP command, display the expanded value of -.SM -.BR PS4 , -followed by the command and its expanded arguments -or associated word list. -.TP 8 -.B \-B -The shell performs brace expansion (see -.B Brace Expansion -above). This is on by default. -.TP 8 -.B \-C -If set, -.B bash -does not overwrite an existing file with the -.BR > , -.BR >& , -and -.B <> -redirection operators. This may be overridden when -creating output files by using the redirection operator -.B >| -instead of -.BR > . -.TP 8 -.B \-E -If set, any trap on \fBERR\fP is inherited by shell functions, command -substitutions, and commands executed in a subshell environment. -The \fBERR\fP trap is normally not inherited in such cases. -.TP 8 -.B \-H -Enable -.B ! -style history substitution. This option is on by -default when the shell is interactive. -.TP 8 -.B \-P -If set, the shell does not resolve symbolic links when executing -commands such as -.B cd -that change the current working directory. It uses the -physical directory structure instead. By default, -.B bash -follows the logical chain of directories when performing commands -which change the current directory. -.TP 8 -.B \-T -If set, any traps on \fBDEBUG\fP and \fBRETURN\fP are inherited by shell -functions, command substitutions, and commands executed in a -subshell environment. -The \fBDEBUG\fP and \fBRETURN\fP traps are normally not inherited -in such cases. -.TP 8 -.B \-\- -If no arguments follow this option, then the positional parameters are -unset. Otherwise, the positional parameters are set to the -\fIarg\fPs, even if some of them begin with a -.BR \- . -.TP 8 -.B \- -Signal the end of options, cause all remaining \fIarg\fPs to be -assigned to the positional parameters. The -.B \-x -and -.B \-v -options are turned off. -If there are no \fIarg\fPs, -the positional parameters remain unchanged. -.PD -.PP -The options are off by default unless otherwise noted. -Using + rather than \- causes these options to be turned off. -The options can also be specified as arguments to an invocation of -the shell. -The current set of options may be found in -.BR $\- . -The return status is always true unless an invalid option is encountered. -.RE -.TP -\fBshift\fP [\fIn\fP] -The positional parameters from \fIn\fP+1 ... are renamed to -.B $1 -.B .... -Parameters represented by the numbers \fB$#\fP -down to \fB$#\fP\-\fIn\fP+1 are unset. -.I n -must be a non-negative number less than or equal to \fB$#\fP. -If -.I n -is 0, no parameters are changed. -If -.I n -is not given, it is assumed to be 1. -If -.I n -is greater than \fB$#\fP, the positional parameters are not changed. -The return status is greater than zero if -.I n -is greater than -.B $# -or less than zero; otherwise 0. -.TP -\fBshopt\fP [\fB\-pqsu\fP] [\fB\-o\fP] [\fIoptname\fP ...] -Toggle the values of variables controlling optional shell behavior. -With no options, or with the -.B \-p -option, a list of all settable options is displayed, with -an indication of whether or not each is set. -The \fB\-p\fP option causes output to be displayed in a form that -may be reused as input. -Other options have the following meanings: -.RS -.PD 0 -.TP -.B \-s -Enable (set) each \fIoptname\fP. -.TP -.B \-u -Disable (unset) each \fIoptname\fP. -.TP -.B \-q -Suppresses normal output (quiet mode); the return status indicates -whether the \fIoptname\fP is set or unset. -If multiple \fIoptname\fP arguments are given with -.BR \-q , -the return status is zero if all \fIoptnames\fP are enabled; non-zero -otherwise. -.TP -.B \-o -Restricts the values of \fIoptname\fP to be those defined for the -.B \-o -option to the -.B set -builtin. -.PD -.PP -If either -.B \-s -or -.B \-u -is used with no \fIoptname\fP arguments, -.B shopt -shows only those options which are set or unset, respectively. -Unless otherwise noted, the \fBshopt\fP options are disabled (unset) -by default. -.PP -The return status when listing options is zero if all \fIoptnames\fP -are enabled, non-zero otherwise. When setting or unsetting options, -the return status is zero unless an \fIoptname\fP is not a valid shell -option. -.PP -The list of \fBshopt\fP options is: -.if t .sp .5v -.if n .sp 1v -.PD 0 -.TP 8 -.B autocd -If set, a command name that is the name of a directory is executed as if -it were the argument to the \fBcd\fP command. -This option is only used by interactive shells. -.TP 8 -.B cdable_vars -If set, an argument to the -.B cd -builtin command that -is not a directory is assumed to be the name of a variable whose -value is the directory to change to. -.TP 8 -.B cdspell -If set, minor errors in the spelling of a directory component in a -.B cd -command will be corrected. -The errors checked for are transposed characters, -a missing character, and one character too many. -If a correction is found, the corrected filename is printed, -and the command proceeds. -This option is only used by interactive shells. -.TP 8 -.B checkhash -If set, \fBbash\fP checks that a command found in the hash -table exists before trying to execute it. If a hashed command no -longer exists, a normal path search is performed. -.TP 8 -.B checkjobs -If set, \fBbash\fP lists the status of any stopped and running jobs before -exiting an interactive shell. If any jobs are running, this causes -the exit to be deferred until a second exit is attempted without an -intervening command (see -.SM -.B "JOB CONTROL" -above). The shell always -postpones exiting if any jobs are stopped. -.TP 8 -.B checkwinsize -If set, \fBbash\fP checks the window size after each command -and, if necessary, updates the values of -.SM -.B LINES -and -.SM -.BR COLUMNS . -.TP 8 -.B cmdhist -If set, -.B bash -attempts to save all lines of a multiple-line -command in the same history entry. This allows -easy re-editing of multi-line commands. -.TP 8 -.B compat31 -If set, -.B bash -changes its behavior to that of version 3.1 with respect to quoted -arguments to the \fB[[\fP conditional command's \fB=~\fP operator -and locale-specific string comparison when using the \fB[[\fP -conditional command's \fB<\fP and \fB>\fP operators. -Bash versions prior to bash-4.1 use ASCII collation and -.IR strcmp (3); -bash-4.1 and later use the current locale's collation sequence and -.IR strcoll (3). -.TP 8 -.B compat32 -If set, -.B bash -changes its behavior to that of version 3.2 with respect to -locale-specific string comparison when using the \fB[[\fP -conditional command's \fB<\fP and \fB>\fP operators (see previous item). -.TP 8 -.B compat40 -If set, -.B bash -changes its behavior to that of version 4.0 with respect to locale-specific -string comparison when using the \fB[[\fP -conditional command's \fB<\fP and \fB>\fP operators (see description of -\fBcompat31\fP) -and the effect of interrupting a command list. -Bash versions 4.0 and later interrupt the list as if the shell received the -interrupt; previous versions continue with the next command in the list. -.TP 8 -.B compat41 -If set, -.BR bash , -when in posix mode, treats a single quote in a double-quoted -parameter expansion as a special character. The single quotes must match -(an even number) and the characters between the single quotes are considered -quoted. This is the behavior of posix mode through version 4.1. -The default bash behavior remains as in previous versions. -.TP 8 -.B complete_fullquote -If set, -.B bash -quotes all shell metacharacters in filenames and directory names when -performing completion. -If not set, -.B bash -removes metacharacters such as the dollar sign from the set of -characters that will be quoted in completed filenames -when these metacharacters appear in shell variable references in words to be -completed. -This means that dollar signs in variable names that expand to directories -will not be quoted; -however, any dollar signs appearing in filenames will not be quoted, either. -This is active only when bash is using backslashes to quote completed -filenames. -This variable is set by default, which is the default bash behavior in -versions through 4.2. -.TP 8 -.B direxpand -If set, -.B bash -replaces directory names with the results of word expansion when performing -filename completion. This changes the contents of the readline editing -buffer. -If not set, -.B bash -attempts to preserve what the user typed. -.TP 8 -.B dirspell -If set, -.B bash -attempts spelling correction on directory names during word completion -if the directory name initially supplied does not exist. -.TP 8 -.B dotglob -If set, -.B bash -includes filenames beginning with a `.' in the results of pathname -expansion. -.TP 8 -.B execfail -If set, a non-interactive shell will not exit if -it cannot execute the file specified as an argument to the -.B exec -builtin command. An interactive shell does not exit if -.B exec -fails. -.TP 8 -.B expand_aliases -If set, aliases are expanded as described above under -.SM -.BR ALIASES . -This option is enabled by default for interactive shells. -.TP 8 -.B extdebug -If set, behavior intended for use by debuggers is enabled: -.RS -.TP -.B 1. -The \fB\-F\fP option to the \fBdeclare\fP builtin displays the source -file name and line number corresponding to each function name supplied -as an argument. -.TP -.B 2. -If the command run by the \fBDEBUG\fP trap returns a non-zero value, the -next command is skipped and not executed. -.TP -.B 3. -If the command run by the \fBDEBUG\fP trap returns a value of 2, and the -shell is executing in a subroutine (a shell function or a shell script -executed by the \fB.\fP or \fBsource\fP builtins), a call to -\fBreturn\fP is simulated. -.TP -.B 4. -.SM -.B BASH_ARGC -and -.SM -.B BASH_ARGV -are updated as described in their descriptions above. -.TP -.B 5. -Function tracing is enabled: command substitution, shell functions, and -subshells invoked with \fB(\fP \fIcommand\fP \fB)\fP inherit the -\fBDEBUG\fP and \fBRETURN\fP traps. -.TP -.B 6. -Error tracing is enabled: command substitution, shell functions, and -subshells invoked with \fB(\fP \fIcommand\fP \fB)\fP inherit the -\fBERR\fP trap. -.RE -.TP 8 -.B extglob -If set, the extended pattern matching features described above under -\fBPathname Expansion\fP are enabled. -.TP 8 -.B extquote -If set, \fB$\fP\(aq\fIstring\fP\(aq and \fB$\fP"\fIstring\fP" quoting is -performed within \fB${\fP\fIparameter\fP\fB}\fP expansions -enclosed in double quotes. This option is enabled by default. -.TP 8 -.B failglob -If set, patterns which fail to match filenames during pathname expansion -result in an expansion error. -.TP 8 -.B force_fignore -If set, the suffixes specified by the -.SM -.B FIGNORE -shell variable -cause words to be ignored when performing word completion even if -the ignored words are the only possible completions. -See -.SM -\fBSHELL VARIABLES\fP -above for a description of -.SM -.BR FIGNORE . -This option is enabled by default. -.TP 8 -.B globasciiranges -If set, range expressions used in pattern matching (see -.SM -.B Pattern Matching -above) behave as if in the traditional C locale when performing -comparisons. That is, the current locale's collating sequence -is not taken into account, so -.B b -will not collate between -.B A -and -.BR B , -and upper-case and lower-case ASCII characters will collate together. -.TP 8 -.B globstar -If set, the pattern \fB**\fP used in a pathname expansion context will -match all files and zero or more directories and subdirectories. -If the pattern is followed by a \fB/\fP, only directories and -subdirectories match. -.TP 8 -.B gnu_errfmt -If set, shell error messages are written in the standard GNU error -message format. -.TP 8 -.B histappend -If set, the history list is appended to the file named by the value -of the -.SM -.B HISTFILE -variable when the shell exits, rather than overwriting the file. -.TP 8 -.B histreedit -If set, and -.B readline -is being used, a user is given the opportunity to re-edit a -failed history substitution. -.TP 8 -.B histverify -If set, and -.B readline -is being used, the results of history substitution are not immediately -passed to the shell parser. Instead, the resulting line is loaded into -the \fBreadline\fP editing buffer, allowing further modification. -.TP 8 -.B hostcomplete -If set, and -.B readline -is being used, \fBbash\fP will attempt to perform hostname completion when a -word containing a \fB@\fP is being completed (see -.B Completing -under -.SM -.B READLINE -above). -This is enabled by default. -.TP 8 -.B huponexit -If set, \fBbash\fP will send -.SM -.B SIGHUP -to all jobs when an interactive login shell exits. -.TP 8 -.B interactive_comments -If set, allow a word beginning with -.B # -to cause that word and all remaining characters on that -line to be ignored in an interactive shell (see -.SM -.B COMMENTS -above). This option is enabled by default. -.TP 8 -.B lastpipe -If set, and job control is not active, the shell runs the last command of -a pipeline not executed in the background in the current shell environment. -.TP 8 -.B lithist -If set, and the -.B cmdhist -option is enabled, multi-line commands are saved to the history with -embedded newlines rather than using semicolon separators where possible. -.TP 8 -.B login_shell -The shell sets this option if it is started as a login shell (see -.SM -.B "INVOCATION" -above). -The value may not be changed. -.TP 8 -.B mailwarn -If set, and a file that \fBbash\fP is checking for mail has been -accessed since the last time it was checked, the message ``The mail in -\fImailfile\fP has been read'' is displayed. -.TP 8 -.B no_empty_cmd_completion -If set, and -.B readline -is being used, -.B bash -will not attempt to search the -.SM -.B PATH -for possible completions when -completion is attempted on an empty line. -.TP 8 -.B nocaseglob -If set, -.B bash -matches filenames in a case\-insensitive fashion when performing pathname -expansion (see -.B Pathname Expansion -above). -.TP 8 -.B nocasematch -If set, -.B bash -matches patterns in a case\-insensitive fashion when performing matching -while executing \fBcase\fP or \fB[[\fP conditional commands. -.TP 8 -.B nullglob -If set, -.B bash -allows patterns which match no -files (see -.B Pathname Expansion -above) -to expand to a null string, rather than themselves. -.TP 8 -.B progcomp -If set, the programmable completion facilities (see -\fBProgrammable Completion\fP above) are enabled. -This option is enabled by default. -.TP 8 -.B promptvars -If set, prompt strings undergo -parameter expansion, command substitution, arithmetic -expansion, and quote removal after being expanded as described in -.SM -.B PROMPTING -above. This option is enabled by default. -.TP 8 -.B restricted_shell -The shell sets this option if it is started in restricted mode (see -.SM -.B "RESTRICTED SHELL" -below). -The value may not be changed. -This is not reset when the startup files are executed, allowing -the startup files to discover whether or not a shell is restricted. -.TP 8 -.B shift_verbose -If set, the -.B shift -builtin prints an error message when the shift count exceeds the -number of positional parameters. -.TP 8 -.B sourcepath -If set, the -\fBsource\fP (\fB.\fP) builtin uses the value of -.SM -.B PATH -to find the directory containing the file supplied as an argument. -This option is enabled by default. -.TP 8 -.B xpg_echo -If set, the \fBecho\fP builtin expands backslash-escape sequences -by default. -.RE -.PD -.TP -\fBsuspend\fP [\fB\-f\fP] -Suspend the execution of this shell until it receives a -.SM -.B SIGCONT -signal. A login shell cannot be suspended; the -.B \-f -option can be used to override this and force the suspension. -The return status is 0 unless the shell is a login shell and -.B \-f -is not supplied, or if job control is not enabled. -.TP -\fBtest\fP \fIexpr\fP -.PD 0 -.TP -\fB[\fP \fIexpr\fP \fB]\fP -Return a status of 0 (true) or 1 (false) depending on -the evaluation of the conditional expression -.IR expr . -Each operator and operand must be a separate argument. -Expressions are composed of the primaries described above under -.SM -.BR "CONDITIONAL EXPRESSIONS" . -\fBtest\fP does not accept any options, nor does it accept and ignore -an argument of \fB\-\-\fP as signifying the end of options. -.if t .sp 0.5 -.if n .sp 1 -Expressions may be combined using the following operators, listed -in decreasing order of precedence. -The evaluation depends on the number of arguments; see below. -Operator precedence is used when there are five or more arguments. -.RS -.PD 0 -.TP -.B ! \fIexpr\fP -True if -.I expr -is false. -.TP -.B ( \fIexpr\fP ) -Returns the value of \fIexpr\fP. -This may be used to override the normal precedence of operators. -.TP -\fIexpr1\fP \-\fBa\fP \fIexpr2\fP -True if both -.I expr1 -and -.I expr2 -are true. -.TP -\fIexpr1\fP \-\fBo\fP \fIexpr2\fP -True if either -.I expr1 -or -.I expr2 -is true. -.PD -.PP -\fBtest\fP and \fB[\fP evaluate conditional -expressions using a set of rules based on the number of arguments. -.if t .sp 0.5 -.if n .sp 1 -.PD 0 -.TP -0 arguments -The expression is false. -.TP -1 argument -The expression is true if and only if the argument is not null. -.TP -2 arguments -If the first argument is \fB!\fP, the expression is true if and -only if the second argument is null. -If the first argument is one of the unary conditional operators listed above -under -.SM -.BR "CONDITIONAL EXPRESSIONS" , -the expression is true if the unary test is true. -If the first argument is not a valid unary conditional operator, the expression -is false. -.TP -3 arguments -The following conditions are applied in the order listed. -If the second argument is one of the binary conditional operators listed above -under -.SM -.BR "CONDITIONAL EXPRESSIONS" , -the result of the expression is the result of the binary test using -the first and third arguments as operands. -The \fB\-a\fP and \fB\-o\fP operators are considered binary operators -when there are three arguments. -If the first argument is \fB!\fP, the value is the negation of -the two-argument test using the second and third arguments. -If the first argument is exactly \fB(\fP and the third argument is -exactly \fB)\fP, the result is the one-argument test of the second -argument. -Otherwise, the expression is false. -.TP -4 arguments -If the first argument is \fB!\fP, the result is the negation of -the three-argument expression composed of the remaining arguments. -Otherwise, the expression is parsed and evaluated according to -precedence using the rules listed above. -.TP -5 or more arguments -The expression is parsed and evaluated according to precedence -using the rules listed above. -.if t .sp 0.5 -.if n .sp 1 -.LP -When used with \fBtest\fP or \fB[\fP, the \fB<\fP and \fB>\fP operators -sort lexicographically using ASCII ordering. -.RE -.PD -.TP -.B times -Print the accumulated user and system times for the shell and -for processes run from the shell. The return status is 0. -.TP -\fBtrap\fP [\fB\-lp\fP] [[\fIarg\fP] \fIsigspec\fP ...] -The command -.I arg -is to be read and executed when the shell receives -signal(s) -.IR sigspec . -If -.I arg -is absent (and there is a single \fIsigspec\fP) or -.BR \- , -each specified signal is -reset to its original disposition (the value it had -upon entrance to the shell). -If -.I arg -is the null string the signal specified by each -.I sigspec -is ignored by the shell and by the commands it invokes. -If -.I arg -is not present and -.B \-p -has been supplied, then the trap commands associated with each -.I sigspec -are displayed. -If no arguments are supplied or if only -.B \-p -is given, -.B trap -prints the list of commands associated with each signal. -The -.B \-l -option causes the shell to print a list of signal names and -their corresponding numbers. -Each -.I sigspec -is either -a signal name defined in <\fIsignal.h\fP>, or a signal number. -Signal names are case insensitive and the -.SM -.B SIG -prefix is optional. -.if t .sp 0.5 -.if n .sp 1 -If a -.I sigspec -is -.SM -.B EXIT -(0) the command -.I arg -is executed on exit from the shell. -If a -.I sigspec -is -.SM -.BR DEBUG , -the command -.I arg -is executed before every \fIsimple command\fP, \fIfor\fP command, -\fIcase\fP command, \fIselect\fP command, every arithmetic \fIfor\fP -command, and before the first command executes in a shell function (see -.SM -.B SHELL GRAMMAR -above). -Refer to the description of the \fBextdebug\fP option to the -\fBshopt\fP builtin for details of its effect on the \fBDEBUG\fP trap. -If a -.I sigspec -is -.SM -.BR RETURN , -the command -.I arg -is executed each time a shell function or a script executed with -the \fB.\fP or \fBsource\fP builtins finishes executing. -.if t .sp 0.5 -.if n .sp 1 -If a -.I sigspec -is -.SM -.BR ERR , -the command -.I arg -is executed whenever a simple command has a non\-zero exit status, -subject to the following conditions. -The -.SM -.B ERR -trap is not executed if the failed -command is part of the command list immediately following a -.B while -or -.B until -keyword, -part of the test in an -.I if -statement, part of a command executed in a -.B && -or -.B || -list, or if the command's return value is -being inverted via -.BR ! . -These are the same conditions obeyed by the \fBerrexit\fP option. -.if t .sp 0.5 -.if n .sp 1 -Signals ignored upon entry to the shell cannot be trapped or reset. -Trapped signals that are not being ignored are reset to their original -values in a subshell or subshell environment when one is created. -The return status is false if any -.I sigspec -is invalid; otherwise -.B trap -returns true. -.TP -\fBtype\fP [\fB\-aftpP\fP] \fIname\fP [\fIname\fP ...] -With no options, -indicate how each -.I name -would be interpreted if used as a command name. -If the -.B \-t -option is used, -.B type -prints a string which is one of -.IR alias , -.IR keyword , -.IR function , -.IR builtin , -or -.I file -if -.I name -is an alias, shell reserved word, function, builtin, or disk file, -respectively. -If the -.I name -is not found, then nothing is printed, and an exit status of false -is returned. -If the -.B \-p -option is used, -.B type -either returns the name of the disk file -that would be executed if -.I name -were specified as a command name, -or nothing if -.if t \f(CWtype -t name\fP -.if n ``type -t name'' -would not return -.IR file . -The -.B \-P -option forces a -.SM -.B PATH -search for each \fIname\fP, even if -.if t \f(CWtype -t name\fP -.if n ``type -t name'' -would not return -.IR file . -If a command is hashed, -.B \-p -and -.B \-P -print the hashed value, which is not necessarily the file that appears -first in -.SM -.BR PATH . -If the -.B \-a -option is used, -.B type -prints all of the places that contain -an executable named -.IR name . -This includes aliases and functions, -if and only if the -.B \-p -option is not also used. -The table of hashed commands is not consulted -when using -.BR \-a . -The -.B \-f -option suppresses shell function lookup, as with the \fBcommand\fP builtin. -.B type -returns true if all of the arguments are found, false if -any are not found. -.TP -\fBulimit\fP [\fB\-HSTabcdefilmnpqrstuvx\fP [\fIlimit\fP]] -Provides control over the resources available to the shell and to -processes started by it, on systems that allow such control. -The \fB\-H\fP and \fB\-S\fP options specify that the hard or soft limit is -set for the given resource. -A hard limit cannot be increased by a non-root user once it is set; -a soft limit may be increased up to the value of the hard limit. -If neither \fB\-H\fP nor \fB\-S\fP is specified, both the soft and hard -limits are set. -The value of -.I limit -can be a number in the unit specified for the resource -or one of the special values -.BR hard , -.BR soft , -or -.BR unlimited , -which stand for the current hard limit, the current soft limit, and -no limit, respectively. -If -.I limit -is omitted, the current value of the soft limit of the resource is -printed, unless the \fB\-H\fP option is given. When more than one -resource is specified, the limit name and unit are printed before the value. -Other options are interpreted as follows: -.RS -.PD 0 -.TP -.B \-a -All current limits are reported -.TP -.B \-b -The maximum socket buffer size -.TP -.B \-c -The maximum size of core files created -.TP -.B \-d -The maximum size of a process's data segment -.TP -.B \-e -The maximum scheduling priority ("nice") -.TP -.B \-f -The maximum size of files written by the shell and its children -.TP -.B \-i -The maximum number of pending signals -.TP -.B \-l -The maximum size that may be locked into memory -.TP -.B \-m -The maximum resident set size (many systems do not honor this limit) -.TP -.B \-n -The maximum number of open file descriptors (most systems do not -allow this value to be set) -.TP -.B \-p -The pipe size in 512-byte blocks (this may not be set) -.TP -.B \-q -The maximum number of bytes in POSIX message queues -.TP -.B \-r -The maximum real-time scheduling priority -.TP -.B \-s -The maximum stack size -.TP -.B \-t -The maximum amount of cpu time in seconds -.TP -.B \-u -The maximum number of processes available to a single user -.TP -.B \-v -The maximum amount of virtual memory available to the shell and, on -some systems, to its children -.TP -.B \-x -The maximum number of file locks -.TP -.B \-T -The maximum number of threads -.PD -.PP -If -.I limit -is given, and the -.B \-a -option is not used, -\fIlimit\fP is the new value of the specified resource. -If no option is given, then -.B \-f -is assumed. Values are in 1024-byte increments, except for -.BR \-t , -which is in seconds; -.BR \-p , -which is in units of 512-byte blocks; -and -.BR \-T , -.BR \-b , -.BR \-n , -and -.BR \-u , -which are unscaled values. -The return status is 0 unless an invalid option or argument is supplied, -or an error occurs while setting a new limit. -.RE -.TP -\fBumask\fP [\fB\-p\fP] [\fB\-S\fP] [\fImode\fP] -The user file-creation mask is set to -.IR mode . -If -.I mode -begins with a digit, it -is interpreted as an octal number; otherwise -it is interpreted as a symbolic mode mask similar -to that accepted by -.IR chmod (1). -If -.I mode -is omitted, the current value of the mask is printed. -The -.B \-S -option causes the mask to be printed in symbolic form; the -default output is an octal number. -If the -.B \-p -option is supplied, and -.I mode -is omitted, the output is in a form that may be reused as input. -The return status is 0 if the mode was successfully changed or if -no \fImode\fP argument was supplied, and false otherwise. -.TP -\fBunalias\fP [\-\fBa\fP] [\fIname\fP ...] -Remove each \fIname\fP from the list of defined aliases. If -.B \-a -is supplied, all alias definitions are removed. The return -value is true unless a supplied -.I name -is not a defined alias. -.TP -\fBunset\fP [\-\fBfv\fP] [\fIname\fP ...] -For each -.IR name , -remove the corresponding variable or function. -If the -.B \-v -option is given, each -.I name -refers to a shell variable, and that variable is removed. -Read-only variables may not be unset. -If -.B \-f -is specified, each -.I name -refers to a shell function, and the function definition -is removed. -If no options are supplied, each \fIname\fP refers to a variable; if -there is no variable by that name, any function with that name is -unset. -Each unset variable or function is removed from the environment -passed to subsequent commands. -If any of -.SM -.BR COMP_WORDBREAKS , -.SM -.BR RANDOM , -.SM -.BR SECONDS , -.SM -.BR LINENO , -.SM -.BR HISTCMD , -.SM -.BR FUNCNAME , -.SM -.BR GROUPS , -or -.SM -.B DIRSTACK -are unset, they lose their special properties, even if they are -subsequently reset. The exit status is true unless a -.I name -is readonly. -.TP -\fBwait\fP [\fIn ...\fP] -Wait for each specified process and return its termination status. -Each -.I n -may be a process -ID or a job specification; if a job spec is given, all processes -in that job's pipeline are waited for. If -.I n -is not given, all currently active child processes -are waited for, and the return status is zero. If -.I n -specifies a non-existent process or job, the return status is -127. Otherwise, the return status is the exit status of the last -process or job waited for. -.\" bash_builtins -.if \n(zZ=1 .ig zZ -.SH "RESTRICTED SHELL" -.\" rbash.1 -.zY -.PP -If -.B bash -is started with the name -.BR rbash , -or the -.B \-r -option is supplied at invocation, -the shell becomes restricted. -A restricted shell is used to -set up an environment more controlled than the standard shell. -It behaves identically to -.B bash -with the exception that the following are disallowed or not performed: -.IP \(bu -changing directories with \fBcd\fP -.IP \(bu -setting or unsetting the values of -.SM -.BR SHELL , -.SM -.BR PATH , -.SM -.BR ENV , -or -.SM -.B BASH_ENV -.IP \(bu -specifying command names containing -.B / -.IP \(bu -specifying a filename containing a -.B / -as an argument to the -.B . -builtin command -.IP \(bu -specifying a filename containing a slash as an argument to the -.B \-p -option to the -.B hash -builtin command -.IP \(bu -importing function definitions from the shell environment at startup -.IP \(bu -parsing the value of -.SM -.B SHELLOPTS -from the shell environment at startup -.IP \(bu -redirecting output using the >, >|, <>, >&, &>, and >> redirection operators -.IP \(bu -using the -.B exec -builtin command to replace the shell with another command -.IP \(bu -adding or deleting builtin commands with the -.B \-f -and -.B \-d -options to the -.B enable -builtin command -.IP \(bu -using the \fBenable\fP builtin command to enable disabled shell builtins -.IP \(bu -specifying the -.B \-p -option to the -.B command -builtin command -.IP \(bu -turning off restricted mode with -\fBset +r\fP or \fBset +o restricted\fP. -.PP -These restrictions are enforced after any startup files are read. -.PP -.ie \n(zY=1 When a command that is found to be a shell script is executed, -.el \{ When a command that is found to be a shell script is executed -(see -.SM -.B "COMMAND EXECUTION" -above), -\} -.B rbash -turns off any restrictions in the shell spawned to execute the -script. -.\" end of rbash.1 -.if \n(zY=1 .ig zY -.SH "SEE ALSO" -.PD 0 -.TP -\fIBash Reference Manual\fP, Brian Fox and Chet Ramey -.TP -\fIThe Gnu Readline Library\fP, Brian Fox and Chet Ramey -.TP -\fIThe Gnu History Library\fP, Brian Fox and Chet Ramey -.TP -\fIPortable Operating System Interface (POSIX) Part 2: Shell and Utilities\fP, IEEE -.TP -\fIsh\fP(1), \fIksh\fP(1), \fIcsh\fP(1) -.TP -\fIemacs\fP(1), \fIvi\fP(1) -.TP -\fIreadline\fP(3) -.PD -.SH FILES -.PD 0 -.TP -.FN /bin/bash -The \fBbash\fP executable -.TP -.FN /etc/profile -The systemwide initialization file, executed for login shells -.TP -.FN ~/.bash_profile -The personal initialization file, executed for login shells -.TP -.FN ~/.bashrc -The individual per-interactive-shell startup file -.TP -.FN ~/.bash_logout -The individual login shell cleanup file, executed when a login shell exits -.TP -.FN ~/.inputrc -Individual \fIreadline\fP initialization file -.PD -.SH AUTHORS -Brian Fox, Free Software Foundation -.br -bfox@gnu.org -.PP -Chet Ramey, Case Western Reserve University -.br -chet.ramey@case.edu -.SH BUG REPORTS -If you find a bug in -.B bash, -you should report it. But first, you should -make sure that it really is a bug, and that it appears in the latest -version of -.BR bash . -The latest version is always available from -\fIftp://ftp.gnu.org/pub/gnu/bash/\fP. -.PP -Once you have determined that a bug actually exists, use the -.I bashbug -command to submit a bug report. -If you have a fix, you are encouraged to mail that as well! -Suggestions and `philosophical' bug reports may be mailed -to \fIbug-bash@gnu.org\fP or posted to the Usenet -newsgroup -.BR gnu.bash.bug . -.PP -ALL bug reports should include: -.PP -.PD 0 -.TP 20 -The version number of \fBbash\fR -.TP -The hardware and operating system -.TP -The compiler used to compile -.TP -A description of the bug behaviour -.TP -A short script or `recipe' which exercises the bug -.PD -.PP -.I bashbug -inserts the first three items automatically into the template -it provides for filing a bug report. -.PP -Comments and bug reports concerning -this manual page should be directed to -.IR chet.ramey@case.edu . -.SH BUGS -.PP -It's too big and too slow. -.PP -There are some subtle differences between -.B bash -and traditional versions of -.BR sh , -mostly because of the -.SM -.B POSIX -specification. -.PP -Aliases are confusing in some uses. -.PP -Shell builtin commands and functions are not stoppable/restartable. -.PP -Compound commands and command sequences of the form `a ; b ; c' -are not handled gracefully when process suspension is attempted. -When a process is stopped, the shell immediately executes the next -command in the sequence. -It suffices to place the sequence of commands between -parentheses to force it into a subshell, which may be stopped as -a unit. -.PP -Array variables may not (yet) be exported. -.PP -There may be only one active coprocess at a time. -.zZ -.zY diff --git a/error.c~ b/error.c~ deleted file mode 100644 index 72da9f540..000000000 --- a/error.c~ +++ /dev/null @@ -1,455 +0,0 @@ -/* error.c -- Functions for handling errors. */ - -/* Copyright (C) 1993-2009 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#include "config.h" - -#include "bashtypes.h" -#include - -#if defined (HAVE_UNISTD_H) -# include -#endif - -#if defined (PREFER_STDARG) -# include -#else -# include -#endif - -#include - -#include -#if !defined (errno) -extern int errno; -#endif /* !errno */ - -#include "bashansi.h" -#include "bashintl.h" - -#include "shell.h" -#include "flags.h" -#include "input.h" - -#if defined (HISTORY) -# include "bashhist.h" -#endif - -extern int executing_line_number __P((void)); - -extern int last_command_exit_value; -extern char *shell_name; -#if defined (JOB_CONTROL) -extern pid_t shell_pgrp; -extern int give_terminal_to __P((pid_t, int)); -#endif /* JOB_CONTROL */ - -#if defined (ARRAY_VARS) -extern const char * const bash_badsub_errmsg; -#endif - -static void error_prolog __P((int)); - -/* The current maintainer of the shell. You change this in the - Makefile. */ -#if !defined (MAINTAINER) -#define MAINTAINER "bash-maintainers@gnu.org" -#endif - -const char * const the_current_maintainer = MAINTAINER; - -int gnu_error_format = 0; - -static void -error_prolog (print_lineno) - int print_lineno; -{ - char *ename; - int line; - - ename = get_name_for_error (); - line = (print_lineno && interactive_shell == 0) ? executing_line_number () : -1; - - if (line > 0) - fprintf (stderr, "%s:%s%d: ", ename, gnu_error_format ? "" : _(" line "), line); - else - fprintf (stderr, "%s: ", ename); -} - -/* Return the name of the shell or the shell script for error reporting. */ -char * -get_name_for_error () -{ - char *name; -#if defined (ARRAY_VARS) - SHELL_VAR *bash_source_v; - ARRAY *bash_source_a; -#endif - - name = (char *)NULL; - if (interactive_shell == 0) - { -#if defined (ARRAY_VARS) - bash_source_v = find_variable ("BASH_SOURCE"); - if (bash_source_v && array_p (bash_source_v) && - (bash_source_a = array_cell (bash_source_v))) - name = array_reference (bash_source_a, 0); - if (name == 0 || *name == '\0') /* XXX - was just name == 0 */ -#endif - name = dollar_vars[0]; - } - if (name == 0 && shell_name && *shell_name) - name = base_pathname (shell_name); - if (name == 0) -#if defined (PROGRAM) - name = PROGRAM; -#else - name = "bash"; -#endif - - return (name); -} - -/* Report an error having to do with FILENAME. This does not use - sys_error so the filename is not interpreted as a printf-style - format string. */ -void -file_error (filename) - const char *filename; -{ - report_error ("%s: %s", filename, strerror (errno)); -} - -void -#if defined (PREFER_STDARG) -programming_error (const char *format, ...) -#else -programming_error (format, va_alist) - const char *format; - va_dcl -#endif -{ - va_list args; - char *h; - -#if defined (JOB_CONTROL) - give_terminal_to (shell_pgrp, 0); -#endif /* JOB_CONTROL */ - - SH_VA_START (args, format); - - vfprintf (stderr, format, args); - fprintf (stderr, "\n"); - va_end (args); - -#if defined (HISTORY) - if (remember_on_history) - { - h = last_history_line (); - fprintf (stderr, _("last command: %s\n"), h ? h : "(null)"); - } -#endif - -#if 0 - fprintf (stderr, "Report this to %s\n", the_current_maintainer); -#endif - - fprintf (stderr, _("Aborting...")); - fflush (stderr); - - abort (); -} - -/* Print an error message and, if `set -e' has been executed, exit the - shell. Used in this file by file_error and programming_error. Used - outside this file mostly to report substitution and expansion errors, - and for bad invocation options. */ -void -#if defined (PREFER_STDARG) -report_error (const char *format, ...) -#else -report_error (format, va_alist) - const char *format; - va_dcl -#endif -{ - va_list args; - - error_prolog (1); - - SH_VA_START (args, format); - - vfprintf (stderr, format, args); - fprintf (stderr, "\n"); - - va_end (args); - if (exit_immediately_on_error) - exit_shell (1); -} - -void -#if defined (PREFER_STDARG) -fatal_error (const char *format, ...) -#else -fatal_error (format, va_alist) - const char *format; - va_dcl -#endif -{ - va_list args; - - error_prolog (0); - - SH_VA_START (args, format); - - vfprintf (stderr, format, args); - fprintf (stderr, "\n"); - - va_end (args); - sh_exit (2); -} - -void -#if defined (PREFER_STDARG) -internal_error (const char *format, ...) -#else -internal_error (format, va_alist) - const char *format; - va_dcl -#endif -{ - va_list args; - - error_prolog (1); - - SH_VA_START (args, format); - - vfprintf (stderr, format, args); - fprintf (stderr, "\n"); - - va_end (args); -} - -void -#if defined (PREFER_STDARG) -internal_warning (const char *format, ...) -#else -internal_warning (format, va_alist) - const char *format; - va_dcl -#endif -{ - va_list args; - - error_prolog (1); - fprintf (stderr, _("warning: ")); - - SH_VA_START (args, format); - - vfprintf (stderr, format, args); - fprintf (stderr, "\n"); - - va_end (args); -} - -void -#if defined (PREFER_STDARG) -sys_error (const char *format, ...) -#else -sys_error (format, va_alist) - const char *format; - va_dcl -#endif -{ - int e; - va_list args; - - e = errno; - error_prolog (0); - - SH_VA_START (args, format); - - vfprintf (stderr, format, args); - fprintf (stderr, ": %s\n", strerror (e)); - - va_end (args); -} - -/* An error from the parser takes the general form - - shell_name: input file name: line number: message - - The input file name and line number are omitted if the shell is - currently interactive. If the shell is not currently interactive, - the input file name is inserted only if it is different from the - shell name. */ -void -#if defined (PREFER_STDARG) -parser_error (int lineno, const char *format, ...) -#else -parser_error (lineno, format, va_alist) - int lineno; - const char *format; - va_dcl -#endif -{ - va_list args; - char *ename, *iname; - - ename = get_name_for_error (); - iname = yy_input_name (); - - if (interactive) - fprintf (stderr, "%s: ", ename); - else if (interactive_shell) - fprintf (stderr, "%s: %s:%s%d: ", ename, iname, gnu_error_format ? "" : _(" line "), lineno); - else if (STREQ (ename, iname)) - fprintf (stderr, "%s:%s%d: ", ename, gnu_error_format ? "" : _(" line "), lineno); - else - fprintf (stderr, "%s: %s:%s%d: ", ename, iname, gnu_error_format ? "" : _(" line "), lineno); - - SH_VA_START (args, format); - - vfprintf (stderr, format, args); - fprintf (stderr, "\n"); - - va_end (args); - - if (exit_immediately_on_error) - exit_shell (last_command_exit_value = 2); -} - -#ifdef DEBUG -void -#if defined (PREFER_STDARG) -itrace (const char *format, ...) -#else -itrace (format, va_alist) - const char *format; - va_dcl -#endif -{ - va_list args; - - fprintf(stderr, "TRACE: pid %ld: ", (long)getpid()); - - SH_VA_START (args, format); - - vfprintf (stderr, format, args); - fprintf (stderr, "\n"); - - va_end (args); - - fflush(stderr); -} - -/* A trace function for silent debugging -- doesn't require a control - terminal. */ -void -#if defined (PREFER_STDARG) -trace (const char *format, ...) -#else -trace (format, va_alist) - const char *format; - va_dcl -#endif -{ - va_list args; - static FILE *tracefp = (FILE *)NULL; - - if (tracefp == NULL) - tracefp = fopen("/tmp/bash-trace.log", "a+"); - - if (tracefp == NULL) - tracefp = stderr; - else - fcntl (fileno (tracefp), F_SETFD, 1); /* close-on-exec */ - - fprintf(tracefp, "TRACE: pid %ld: ", (long)getpid()); - - SH_VA_START (args, format); - - vfprintf (tracefp, format, args); - fprintf (tracefp, "\n"); - - va_end (args); - - fflush(tracefp); -} - -#endif /* DEBUG */ - -/* **************************************************************** */ -/* */ -/* Common error reporting */ -/* */ -/* **************************************************************** */ - - -static const char * const cmd_error_table[] = { - N_("unknown command error"), /* CMDERR_DEFAULT */ - N_("bad command type"), /* CMDERR_BADTYPE */ - N_("bad connector"), /* CMDERR_BADCONN */ - N_("bad jump"), /* CMDERR_BADJUMP */ - 0 -}; - -void -command_error (func, code, e, flags) - const char *func; - int code, e, flags; /* flags currently unused */ -{ - if (code > CMDERR_LAST) - code = CMDERR_DEFAULT; - - programming_error ("%s: %s: %d", func, _(cmd_error_table[code]), e); -} - -char * -command_errstr (code) - int code; -{ - if (code > CMDERR_LAST) - code = CMDERR_DEFAULT; - - return (_(cmd_error_table[code])); -} - -#ifdef ARRAY_VARS -void -err_badarraysub (s) - const char *s; -{ - report_error ("%s: %s", s, _(bash_badsub_errmsg)); -} -#endif - -void -err_unboundvar (s) - const char *s; -{ - report_error (_("%s: unbound variable"), s); -} - -void -err_readonly (s) - const char *s; -{ - report_error (_("%s: readonly variable"), s); -} diff --git a/examples/loadables/Makefile.in.save b/examples/loadables/Makefile.in.save deleted file mode 100644 index f6208f5cc..000000000 --- a/examples/loadables/Makefile.in.save +++ /dev/null @@ -1,238 +0,0 @@ -# -# Simple makefile for the sample loadable builtins -# -# Copyright (C) 1996 Free Software Foundation, Inc. - -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. - -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA. - -# Include some boilerplate Gnu makefile definitions. -prefix = @prefix@ - -exec_prefix = @exec_prefix@ -bindir = @bindir@ -libdir = @libdir@ -infodir = @infodir@ -includedir = @includedir@ - -topdir = @top_srcdir@ -BUILD_DIR = @BUILD_DIR@ -srcdir = @srcdir@ -VPATH = .:@srcdir@ - -@SET_MAKE@ -CC = @CC@ -RM = rm -f - -SHELL = @MAKE_SHELL@ - -host_os = @host_os@ -host_cpu = @host_cpu@ -host_vendor = @host_vendor@ - -CFLAGS = @CFLAGS@ -LOCAL_CFLAGS = @LOCAL_CFLAGS@ -DEFS = @DEFS@ -LOCAL_DEFS = @LOCAL_DEFS@ - -CPPFLAGS = @CPPFLAGS@ - -BASHINCDIR = ${topdir}/include - -LIBBUILD = ${BUILD_DIR}/lib - -INTL_LIBSRC = ${topdir}/lib/intl -INTL_BUILDDIR = ${LIBBUILD}/intl -INTL_INC = @INTL_INC@ -LIBINTL_H = @LIBINTL_H@ - -CCFLAGS = $(DEFS) $(LOCAL_DEFS) $(LOCAL_CFLAGS) $(CFLAGS) - -# -# These values are generated for configure by ${topdir}/support/shobj-conf. -# If your system is not supported by that script, but includes facilities for -# dynamic loading of shared objects, please update the script and send the -# changes to bash-maintainers@gnu.org. -# -SHOBJ_CC = @SHOBJ_CC@ -SHOBJ_CFLAGS = @SHOBJ_CFLAGS@ -SHOBJ_LD = @SHOBJ_LD@ -SHOBJ_LDFLAGS = @SHOBJ_LDFLAGS@ -SHOBJ_XLDFLAGS = @SHOBJ_XLDFLAGS@ -SHOBJ_LIBS = @SHOBJ_LIBS@ -SHOBJ_STATUS = @SHOBJ_STATUS@ - -INC = -I. -I.. -I$(topdir) -I$(topdir)/lib -I$(topdir)/builtins \ - -I$(BASHINCDIR) -I$(BUILD_DIR) -I$(LIBBUILD) \ - -I$(BUILD_DIR)/builtins $(INTL_INC) - -.c.o: - $(SHOBJ_CC) $(SHOBJ_CFLAGS) $(CCFLAGS) $(INC) -c -o $@ $< - - -ALLPROG = print truefalse sleep pushd finfo logname basename dirname \ - tty pathchk tee head mkdir rmdir printenv id whoami \ - uname sync push ln unlink cut realpath getconf strftime -OTHERPROG = necho hello cat - -all: $(SHOBJ_STATUS) - -supported: $(ALLPROG) -others: $(OTHERPROG) - -unsupported: - @echo "Your system (${host_os}) is not supported by the" - @echo "${topdir}/support/shobj-conf script." - @echo "If your operating system provides facilities for dynamic" - @echo "loading of shared objects using the dlopen(3) interface," - @echo "please update the script and re-run configure. - @echo "Please send the changes you made to bash-maintainers@gnu.org" - @echo "for inclusion in future bash releases." - -everything: supported others - -print: print.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ print.o $(SHOBJ_LIBS) - -necho: necho.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ necho.o $(SHOBJ_LIBS) - -getconf: getconf.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ getconf.o $(SHOBJ_LIBS) - -hello: hello.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ hello.o $(SHOBJ_LIBS) - -truefalse: truefalse.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ truefalse.o $(SHOBJ_LIBS) - -sleep: sleep.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ sleep.o $(SHOBJ_LIBS) - -finfo: finfo.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ finfo.o $(SHOBJ_LIBS) - -cat: cat.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ cat.o $(SHOBJ_LIBS) - -logname: logname.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ logname.o $(SHOBJ_LIBS) - -basename: basename.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ basename.o $(SHOBJ_LIBS) - -dirname: dirname.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ dirname.o $(SHOBJ_LIBS) - -tty: tty.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ tty.o $(SHOBJ_LIBS) - -pathchk: pathchk.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ pathchk.o $(SHOBJ_LIBS) - -tee: tee.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ tee.o $(SHOBJ_LIBS) - -mkdir: mkdir.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ mkdir.o $(SHOBJ_LIBS) - -rmdir: rmdir.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ rmdir.o $(SHOBJ_LIBS) - -head: head.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ head.o $(SHOBJ_LIBS) - -printenv: printenv.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ printenv.o $(SHOBJ_LIBS) - -id: id.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ id.o $(SHOBJ_LIBS) - -whoami: whoami.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ whoami.o $(SHOBJ_LIBS) - -uname: uname.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ uname.o $(SHOBJ_LIBS) - -sync: sync.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ sync.o $(SHOBJ_LIBS) - -push: push.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ push.o $(SHOBJ_LIBS) - -ln: ln.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ ln.o $(SHOBJ_LIBS) - -unlink: unlink.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ unlink.o $(SHOBJ_LIBS) - -cut: cut.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ cut.o $(SHOBJ_LIBS) - -realpath: realpath.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ realpath.o $(SHOBJ_LIBS) - -strftime: strftime.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ strftime.o $(SHOBJ_LIBS) - -# pushd is a special case. We use the same source that the builtin version -# uses, with special compilation options. -# -pushd.c: ${topdir}/builtins/pushd.def - $(RM) $@ - ${BUILD_DIR}/builtins/mkbuiltins -D ${topdir}/builtins ${topdir}/builtins/pushd.def - -pushd.o: pushd.c - $(RM) $@ - $(SHOBJ_CC) -DHAVE_CONFIG_H -DPUSHD_AND_POPD -DLOADABLE_BUILTIN $(SHOBJ_CFLAGS) $(CFLAGS) $(CPPFLAGS) $(INC) -c -o $@ $< - -pushd: pushd.o - $(SHOBJ_LD) $(SHOBJ_LDFLAGS) $(SHOBJ_XLDFLAGS) -o $@ pushd.o $(SHOBJ_LIBS) - -clean: - $(RM) $(ALLPROG) $(OTHERPROG) *.o - -( cd perl && ${MAKE} ${MFLAGS} $@ ) - -mostlyclean: clean - -( cd perl && ${MAKE} ${MFLAGS} $@ ) - -distclean maintainer-clean: clean - $(RM) Makefile pushd.c - -( cd perl && ${MAKE} ${MFLAGS} $@ ) - -print.o: print.c -truefalse.o: truefalse.c -sleep.o: sleep.c -finfo.o: finfo.c -logname.o: logname.c -basename.o: basename.c -dirname.o: dirname.c -tty.o: tty.c -pathchk.o: pathchk.c -tee.o: tee.c -head.o: head.c -rmdir.o: rmdir.c -necho.o: necho.c -getconf.o: getconf.c -hello.o: hello.c -cat.o: cat.c -printenv.o: printenv.c -id.o: id.c -whoami.o: whoami.c -uname.o: uname.c -sync.o: sync.c -push.o: push.c -mkdir.o: mkdir.c -realpath.o: realpath.c -strftime.o: strftime.c diff --git a/examples/scripts/adventure.sh.save1 b/examples/scripts/adventure.sh.save1 deleted file mode 100755 index 4e2239396..000000000 --- a/examples/scripts/adventure.sh.save1 +++ /dev/null @@ -1,549 +0,0 @@ -#!/bin/bash -# ash -- "Adventure shell" -# last edit: 86/04/21 D A Gwyn -# SCCS ID: @(#)ash.sh 1.4 - -OPATH=$PATH - -ask() -{ - echo -n "$@" '[y/n] ' - read ans - - case "$ans" in - y*|Y*) - return 0 - ;; - *) - return 1 - ;; - esac -} - -CAT=${PAGER:-more} - -ash_inst() -{ - cat <<- EOF - - Instructions for the Adventure shell - - Welcome to the Adventure shell! In this exploration of the UNIX file - system, I will act as your eyes and hands. As you move around, I will - describe whatever is visible and will carry out your commands. The - general form of a command is - Verb Object Extra_stuff. - Most commands pay no attention to the "Extra_stuff", and many do not - need an "Object". A typical command is - get all - which picks up all files in the current "room" (directory). You can - find out what you are carrying by typing the command - inventory - The command "help" results in a full description of all commands that I - understand. To quit the Adventure shell, type - quit - - There are UNIX monsters lurking in the background. These are also - known as "commands with arguments". - - Good luck! - EOF -} - -ash_help() -{ -echo "I understand the following commands (synonyms in parentheses):" -echo "" - -echo "change OBJECT to NEW_NAME changes the name of the object" -echo "clone OBJECT as NEW_NAME duplicates the object" -echo "drop OBJECTS leaves the objects in the room" -echo "enter (go) PASSAGE takes the labeled passage" -echo "examine OBJECTS describes the objects in detail" -echo "feed OBJECT to MONSTER stuffs the object into a UNIX monster" -echo "get (take) OBJECTS picks up the specified objects" -echo "gripe (bug) report a problem with the Adventure shell" -echo "help prints this summary" -echo "inventory (i) tells what you are carrying" -echo "kill (destroy) OBJECTS destroys the objects" -echo "look (l) describes the room, including hidden objects" -echo "open (read) OBJECT shows the contents of an object" -echo "quit (exit) leaves the Adventure shell" -echo "resurrect OBJECTS attempts to restore dead objects" -echo "steal OBJECT from MONSTER obtains the object from a UNIX monster" -echo "throw OBJECT at daemon feeds the object to the printer daemon" -echo "up takes the overhead passage" -echo "wake MONSTER awakens a UNIX monster" -echo "where (w) tells you where you are" -echo "xyzzy moves you to your home" -} - -MAINT=chet@ins.cwru.edu - -PATH=/usr/ucb:/bin:/usr/bin:/usr/local/bin:. -export PATH - -trap 'echo Ouch!' 2 3 -#trap '' 18 # disable Berkeley job control - -ash_lk(){ echo " $1 " | fgrep " $2 " >&- 2>&-; } -ash_pr(){ echo $* | tr ' ' '\012' | pr -5 -t -w75 -l$[ ( $# + 4 ) / 5 ]; } -ash_rm(){ echo " $1 " | sed -e "s/ $2 / /" -e 's/^ //' -e 's/ $//'; } - -# enable history, bang history expansion, and emacs editing -set -o history -set -o histexpand -set -o emacs - -cd -LIM=.limbo # $HOME/$LIM contains "destroyed" objects -mkdir $LIM >&- 2>&- -KNAP=.knapsack # $HOME/$KNAP contains objects being "carried" -if [ ! -d $KNAP ] -then mkdir $KNAP >&- 2>&- - if [ $? = 0 ] - then echo 'You found a discarded empty knapsack.' - else echo 'You have no knapsack to carry things in.' - exit 1 - fi -else echo 'One moment while I peek in your old knapsack...' -fi - -kn=`echo \`ls -a $KNAP | sed -e '/^\.$/d' -e '/^\.\.$/d'\`` - -if ask 'Welcome to the Adventure shell! Do you need instructions?' -then - ash_inst - echo -n 'Type a newline to continue: ' - read -fi - -wiz=false -cha=false -prev=$LIM -while : -do room=`pwd` - if [ $room != $prev ] - then if [ $room = $HOME ] - then echo 'You are in your own home.' - else echo "You have entered $room." - fi - exs= - obs= - hexs= - hobs= - f=false - for i in `ls -a` - do case $i in - .|..) ;; - .*) if [ -f $i ] - then hobs="$hobs $i" - elif [ -d $i ] - then hexs="$hexs $i" - else f=true - fi - ;; - *) if [ -f $i ] - then obs="$obs $i" - elif [ -d $i ] - then exs="$exs $i" - else f=true - fi - ;; - esac - done - if [ "$obs" ] - then echo 'This room contains:' - ash_pr $obs - else echo 'The room looks empty.' - fi - if [ "$exs" ] - then echo 'There are exits labeled:' - ash_pr $exs - echo 'as well as a passage overhead.' - else echo 'There is a passage overhead.' - fi - if sh -c $f - then echo 'There are shadowy figures in the corner.' - fi - prev=$room - fi - - read -e -p '-advsh> ' verb obj x # prompt is '-advsh> ' - if [ $? != 0 ] - then verb=quit # EOF - fi - - case $verb in - change) if [ "$obj" ] - then if ash_lk "$obs $hobs" "$obj" - then set -- $x - case "$1" in - to) if [ "$2" ] - then if [ -f $2 ] - then echo "You must destroy $2 first." - set -- - fi - if [ "$2" ] - then if mv $obj $2 >&- 2>&- - then echo "The $obj shimmers and turns into $2." - obs=`ash_rm "$2 $obs" "$obj"` - else echo "There is a cloud of smoke but the $obj is unchanged." - fi - fi - else echo 'To what?' - fi - ;; - *) echo "Change $obj to what?" - ;; - esac - else if ash_lk "$kn" "$obj" - then echo 'You must drop it first.' - else echo "I see no $obj here." - fi - fi - else echo 'Change what?' - fi - ;; - clone) if [ "$obj" ] - then if ash_lk "$obs $hobs" "$obj" - then if [ ! -r $obj ] - then echo "The $obj does not wish to be cloned." - else set -- $x - case "$1" in - as) if [ "$2" ] - then if [ -f $2 ] - then echo "You must destroy $2 first." - else if cp $obj $2 >&- 2>&- - then echo "Poof! When the smoke clears, you see the new $2." - obs="$obs $2" - else echo 'You hear a dull thud but no clone appears.' - fi - fi - else echo 'As what?' - fi - ;; - *) echo "Clone $obj as what?" - ;; - esac - fi - else if ash_lk "$kn" "$obj" - then echo 'You must drop it first.' - else echo "I see no $obj here." - fi - fi - else echo 'Clone what?' - fi - ;; - drop) if [ "$obj" ] - then for it in $obj $x - do if ash_lk "$kn" "$it" - then if [ -w $it ] - then echo "You must destroy $it first." - else if mv $HOME/$KNAP/$it $it >&- 2>&- - then echo "$it: dropped." - kn=`ash_rm "$kn" "$it"` - obs=`echo $it $obs` - else echo "The $it is caught in your knapsack." - fi - fi - else echo "You're not carrying the $it!" - fi - done - else echo 'Drop what?' - fi - ;; - enter|go) if [ "$obj" ] - then if [ $obj != up ] - then if ash_lk "$exs $hexs" "$obj" - then if [ -x $obj ] - then if cd $obj - then echo 'You squeeze through the passage.' - else echo "You can't go that direction." - fi - else echo 'An invisible force blocks your way.' - fi - else echo 'I see no such passage.' - fi - else if cd .. - then echo 'You struggle upwards.' - else echo "You can't reach that high." - fi - fi - else echo 'Which passage?' - fi - ;; - examine) if [ "$obj" ] - then if [ $obj = all ] - then $obj=`echo $obs $exs` - x= - fi - for it in $obj $x - do if ash_lk "$obs $hobs $exs $hexs" "$it" - then echo "Upon close inspection of the $it, you see:" - ls -ld $it 2>&- - if [ $? != 0 ] - then echo "-- when you look directly at the $it, it vanishes." - fi - else if ash_lk "$kn" "$it" - then echo 'You must drop it first.' - else echo "I see no $it here." - fi - fi - done - else echo 'Examine what?' - fi - ;; - feed) if [ "$obj" ] - then if ash_lk "$obs $hobs" "$obj" - then set -- $x - case "$1" in - to) if [ "$2" ] - then shift - if PATH=$OPATH $* <$obj 2>&- - then echo "The $1 monster devours your $obj." - if rm -f $obj >&- 2>&- - then obs=`ash_rm "$obs" "$obj"` - else echo 'But he spits it back up.' - fi - else echo "The $1 monster holds his nose in disdain." - fi - else echo 'To what?' - fi - ;; - *) echo "Feed $obj to what?" - ;; - esac - else if ash_lk "$kn" "$obj" - then echo 'You must drop it first.' - else echo "I see no $obj here." - fi - fi - else echo 'Feed what?' - fi - ;; - get|take) if [ "$obj" ] - then if [ $obj = all ] - then obj="$obs" - x= - fi - for it in $obj $x - do if ash_lk "$obs $hobs" "$it" - then if ash_lk "$kn" "$it" - then echo 'You already have one.' - else if mv $it $HOME/$KNAP/$it >&- 2>&- - then echo "$it: taken." - kn="$it $kn" - obs=`ash_rm "$obs" "$it"` - else echo "The $it is too heavy." - fi - fi - else echo "I see no $it here." - fi - done - else echo 'Get what?' - fi - ;; - gripe|bug) echo 'Please describe the problem and your situation at the time it failed.\nEnd the bug report with a line containing just a Ctrl-D.' - cat | mail $MAINT -s 'ash bug' - echo 'Thank you!' - ;; - help) ash_help - ;; - inventory|i) if [ "$kn" ] - then echo 'Your knapsack contains:' - ash_pr $kn - else echo 'You are poverty-stricken.' - fi - ;; - kill|destroy) if [ "$obj" ] - then if [ $obj = all ] - then x= - if ask "Do you really want to attempt to $verb them all?" - then obj=`echo $obs` - else echo 'Chicken!' - obj= - fi - fi - for it in $obj $x - do if ash_lk "$obs $hobs" "$it" - then if mv $it $HOME/$LIM <&- >&- 2>&- - then if [ $verb = kill ] - then echo "The $it cannot defend himself; he dies." - else echo "You have destroyed the $it; it vanishes." - fi - obs=`ash_rm "$obs" "$it"` - else if [ $verb = kill ] - then echo "Your feeble blows are no match for the $it." - else echo "The $it is indestructible." - fi - fi - else if ash_lk "$kn" "$it" - then echo "You must drop the $it first." - found=false - else echo "I see no $it here." - fi - fi - done - else echo 'Kill what?' - fi - ;; - look|l) obs=`echo $obs $hobs` - hobs= - if [ "$obs" ] - then echo 'The room contains:' - ash_pr $obs - else echo 'The room is empty.' - fi - exs=`echo $exs $hexs` - hexs= - if [ "$exs" ] - then echo 'There are exits plainly labeled:' - ash_pr $exs - echo 'and a passage directly overhead.' - else echo 'The only exit is directly overhead.' - fi - ;; - magic) if [ "$obj" = mode ] - then if sh -c $cha - then echo 'You had your chance and you blew it.' - else if ask 'Are you a wizard?' - then echo -n 'Prove it! Say the magic word: ' - read obj - if [ "$obj" = armadillo ] - then echo 'Yes, master!!' - wiz=true - else echo "Homie says: I don't think so" - cha=true - fi - else echo "I didn't think so." - fi - fi - else echo 'Nice try.' - fi - ;; - open|read) if [ "$obj" ] - then if ash_lk "$obs $hobs" "$obj" - then if [ -r $obj ] - then if [ -s $obj ] - then echo "Opening the $obj reveals:" - $CAT < $obj - if [ $? != 0 ] - then echo '-- oops, you lost the contents!' - fi - else echo "There is nothing inside the $obj." - fi - else echo "You do not have the proper tools to open the $obj." - fi - else if ash_lk "$kn" "$obj" - then echo 'You must drop it first.' - found=false - else echo "I see no $obj here." - fi - fi - else echo 'Open what?' - fi - ;; - quit|exit) if ask 'Do you really want to quit now?' - then if [ "$kn" ] - then echo 'The contents of your knapsack will still be there next time.' - fi - rm -rf $HOME/$LIM - echo 'See you later!' - exit 0 - fi - ;; - resurrect) if [ "$obj" ] - then for it in $obj $x - do if ash_lk "$obs $hobs" "$it" - then echo "The $it is already alive and well." - else if mv $HOME/$LIM/$it $it <&- >&- 2>&- - then echo "The $it staggers to his feet." - obs=`echo $it $obs` - else echo "There are sparks but no $it appears." - fi - fi - done - else echo 'Resurrect what?' - fi - ;; - steal) if [ "$obj" ] - then if ash_lk "$obs $hobs" "$obj" - then echo 'There is already one here.' - else set -- $x - case "$1" in - from) if [ "$2" ] - then shift - if PATH=$OPATH $* >$obj 2>&- - then echo "The $1 monster drops the $obj." - obs=`echo $obj $obs` - else echo "The $1 monster runs away as you approach." - rm -f $obj >&- 2>&- - fi - else echo 'From what?' - fi - ;; - *) echo "Steal $obj from what?" - ;; - esac - fi - else echo 'Steal what?' - fi - ;; - throw) if [ "$obj" ] - then if ash_lk "$obs $hobs" "$obj" - then set -- $x - case "$1" in - at) case "$2" in - daemon) if sh -c "lpr -r $obj" - then echo "The daemon catches the $obj, turns it into paper,\nand leaves it in the basket." - obs=`ash_rm "$obs" "$obj"` - else echo "The daemon is nowhere to be found." - fi - ;; - *) echo 'At what?' - ;; - esac - ;; - *) echo "Throw $obj at what?" - ;; - esac - else if ash_lk "$kn" "$obj" - then echo 'It is in your knapsack.' - found=false - else echo "I see no $obj here." - fi - fi - else echo 'Throw what?' - fi - ;; - u|up) if cd .. - then echo 'You pull yourself up a level.' - else echo "You can't reach that high." - fi - ;; - wake) if [ "$obj" ] - then echo "You awaken the $obj monster:" - PATH=$OPATH $obj $x - echo 'The monster slithers back into the darkness.' - else echo 'Wake what?' - fi - ;; - w|where) echo "You are in $room." - ;; - xyzzy) if cd - then echo 'A strange feeling comes over you.' - else echo 'Your spell fizzles out.' - fi - ;; - *) if [ "$verb" ] - then if sh -c $wiz - then PATH=$OPATH $verb $obj $x - else echo "I don't know how to \"$verb\"." - echo 'Type "help" for assistance.' - fi - else echo 'Say something!' - fi - ;; - esac -done diff --git a/execute_cmd.c~ b/execute_cmd.c~ deleted file mode 100644 index 05896100c..000000000 --- a/execute_cmd.c~ +++ /dev/null @@ -1,5336 +0,0 @@ -/* execute_cmd.c -- Execute a COMMAND structure. */ - -/* Copyright (C) 1987-2012 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#include "config.h" - -#if !defined (__GNUC__) && !defined (HAVE_ALLOCA_H) && defined (_AIX) - #pragma alloca -#endif /* _AIX && RISC6000 && !__GNUC__ */ - -#include -#include "chartypes.h" -#include "bashtypes.h" -#if !defined (_MINIX) && defined (HAVE_SYS_FILE_H) -# include -#endif -#include "filecntl.h" -#include "posixstat.h" -#include -#ifndef _MINIX -# include -#endif - -#if defined (HAVE_UNISTD_H) -# include -#endif - -#include "posixtime.h" - -#if defined (HAVE_SYS_RESOURCE_H) && !defined (RLIMTYPE) -# include -#endif - -#if defined (HAVE_SYS_TIMES_H) && defined (HAVE_TIMES) -# include -#endif - -#include - -#if !defined (errno) -extern int errno; -#endif - -#define NEED_FPURGE_DECL - -#include "bashansi.h" -#include "bashintl.h" - -#include "memalloc.h" -#include "shell.h" -#include /* use <...> so we pick it up from the build directory */ -#include "flags.h" -#include "builtins.h" -#include "hashlib.h" -#include "jobs.h" -#include "execute_cmd.h" -#include "findcmd.h" -#include "redir.h" -#include "trap.h" -#include "pathexp.h" -#include "hashcmd.h" - -#if defined (COND_COMMAND) -# include "test.h" -#endif - -#include "builtins/common.h" -#include "builtins/builtext.h" /* list of builtins */ - -#include -#include - -#if defined (BUFFERED_INPUT) -# include "input.h" -#endif - -#if defined (ALIAS) -# include "alias.h" -#endif - -#if defined (HISTORY) -# include "bashhist.h" -#endif - -extern int dollar_dollar_pid; -extern int posixly_correct; -extern int expand_aliases; -extern int autocd; -extern int breaking, continuing, loop_level; -extern int parse_and_execute_level, running_trap, sourcelevel; -extern int command_string_index, line_number; -extern int dot_found_in_search; -extern int already_making_children; -extern int tempenv_assign_error; -extern char *the_printed_command, *shell_name; -extern pid_t last_command_subst_pid; -extern sh_builtin_func_t *last_shell_builtin, *this_shell_builtin; -extern char **subshell_argv, **subshell_envp; -extern int subshell_argc; -extern time_t shell_start_time; -#if 0 -extern char *glob_argv_flags; -#endif - -extern int close __P((int)); - -/* Static functions defined and used in this file. */ -static void close_pipes __P((int, int)); -static void do_piping __P((int, int)); -static void bind_lastarg __P((char *)); -static int shell_control_structure __P((enum command_type)); -static void cleanup_redirects __P((REDIRECT *)); - -#if defined (JOB_CONTROL) -static int restore_signal_mask __P((sigset_t *)); -#endif - -static void async_redirect_stdin __P((void)); - -static int builtin_status __P((int)); - -static int execute_for_command __P((FOR_COM *)); -#if defined (SELECT_COMMAND) -static int displen __P((const char *)); -static int print_index_and_element __P((int, int, WORD_LIST *)); -static void indent __P((int, int)); -static void print_select_list __P((WORD_LIST *, int, int, int)); -static char *select_query __P((WORD_LIST *, int, char *, int)); -static int execute_select_command __P((SELECT_COM *)); -#endif -#if defined (DPAREN_ARITHMETIC) -static int execute_arith_command __P((ARITH_COM *)); -#endif -#if defined (COND_COMMAND) -static int execute_cond_node __P((COND_COM *)); -static int execute_cond_command __P((COND_COM *)); -#endif -#if defined (COMMAND_TIMING) -static int mkfmt __P((char *, int, int, time_t, int)); -static void print_formatted_time __P((FILE *, char *, - time_t, int, time_t, int, - time_t, int, int)); -static int time_command __P((COMMAND *, int, int, int, struct fd_bitmap *)); -#endif -#if defined (ARITH_FOR_COMMAND) -static intmax_t eval_arith_for_expr __P((WORD_LIST *, int *)); -static int execute_arith_for_command __P((ARITH_FOR_COM *)); -#endif -static int execute_case_command __P((CASE_COM *)); -static int execute_while_command __P((WHILE_COM *)); -static int execute_until_command __P((WHILE_COM *)); -static int execute_while_or_until __P((WHILE_COM *, int)); -static int execute_if_command __P((IF_COM *)); -static int execute_null_command __P((REDIRECT *, int, int, int)); -static void fix_assignment_words __P((WORD_LIST *)); -static int execute_simple_command __P((SIMPLE_COM *, int, int, int, struct fd_bitmap *)); -static int execute_builtin __P((sh_builtin_func_t *, WORD_LIST *, int, int)); -static int execute_function __P((SHELL_VAR *, WORD_LIST *, int, struct fd_bitmap *, int, int)); -static int execute_builtin_or_function __P((WORD_LIST *, sh_builtin_func_t *, - SHELL_VAR *, - REDIRECT *, struct fd_bitmap *, int)); -static void execute_subshell_builtin_or_function __P((WORD_LIST *, REDIRECT *, - sh_builtin_func_t *, - SHELL_VAR *, - int, int, int, - struct fd_bitmap *, - int)); -static int execute_disk_command __P((WORD_LIST *, REDIRECT *, char *, - int, int, int, struct fd_bitmap *, int)); - -static char *getinterp __P((char *, int, int *)); -static void initialize_subshell __P((void)); -static int execute_in_subshell __P((COMMAND *, int, int, int, struct fd_bitmap *)); -#if defined (COPROCESS_SUPPORT) -static int execute_coproc __P((COMMAND *, int, int, struct fd_bitmap *)); -#endif - -static int execute_pipeline __P((COMMAND *, int, int, int, struct fd_bitmap *)); - -static int execute_connection __P((COMMAND *, int, int, int, struct fd_bitmap *)); - -static int execute_intern_function __P((WORD_DESC *, FUNCTION_DEF *)); - -/* Set to 1 if fd 0 was the subject of redirection to a subshell. Global - so that reader_loop can set it to zero before executing a command. */ -int stdin_redir; - -/* The name of the command that is currently being executed. - `test' needs this, for example. */ -char *this_command_name; - -/* The printed representation of the currently-executing command (same as - the_printed_command), except when a trap is being executed. Useful for - a debugger to know where exactly the program is currently executing. */ -char *the_printed_command_except_trap; - -/* For catching RETURN in a function. */ -int return_catch_flag; -int return_catch_value; -procenv_t return_catch; - -/* The value returned by the last synchronous command. */ -int last_command_exit_value; - -/* Whether or not the last command (corresponding to last_command_exit_value) - was terminated by a signal, and, if so, which one. */ -int last_command_exit_signal; - -/* The list of redirections to perform which will undo the redirections - that I made in the shell. */ -REDIRECT *redirection_undo_list = (REDIRECT *)NULL; - -/* The list of redirections to perform which will undo the internal - redirections performed by the `exec' builtin. These are redirections - that must be undone even when exec discards redirection_undo_list. */ -REDIRECT *exec_redirection_undo_list = (REDIRECT *)NULL; - -/* When greater than zero, value is the `level' of builtins we are - currently executing (e.g. `eval echo a' would have it set to 2). */ -int executing_builtin = 0; - -/* Non-zero if we are executing a command list (a;b;c, etc.) */ -int executing_list = 0; - -/* Non-zero if failing commands in a command substitution should not exit the - shell even if -e is set. Used to pass the CMD_IGNORE_RETURN flag down to - commands run in command substitutions by parse_and_execute. */ -int comsub_ignore_return = 0; - -/* Non-zero if we have just forked and are currently running in a subshell - environment. */ -int subshell_environment; - -/* Count of nested subshells, like SHLVL. Available via $BASH_SUBSHELL */ -int subshell_level = 0; - -/* Currently-executing shell function. */ -SHELL_VAR *this_shell_function; - -/* If non-zero, matches in case and [[ ... ]] are case-insensitive */ -int match_ignore_case = 0; - -int executing_command_builtin = 0; - -struct stat SB; /* used for debugging */ - -static int special_builtin_failed; - -static COMMAND *currently_executing_command; - -/* The line number that the currently executing function starts on. */ -static int function_line_number; - -/* XXX - set to 1 if we're running the DEBUG trap and we want to show the line - number containing the function name. Used by executing_line_number to - report the correct line number. Kind of a hack. */ -static int showing_function_line; - -static int line_number_for_err_trap; - -/* A sort of function nesting level counter */ -int funcnest = 0; -int funcnest_max = 0; /* XXX - bash-4.2 */ - -int lastpipe_opt = 0; - -struct fd_bitmap *current_fds_to_close = (struct fd_bitmap *)NULL; - -#define FD_BITMAP_DEFAULT_SIZE 32 - -/* Functions to allocate and deallocate the structures used to pass - information from the shell to its children about file descriptors - to close. */ -struct fd_bitmap * -new_fd_bitmap (size) - int size; -{ - struct fd_bitmap *ret; - - ret = (struct fd_bitmap *)xmalloc (sizeof (struct fd_bitmap)); - - ret->size = size; - - if (size) - { - ret->bitmap = (char *)xmalloc (size); - memset (ret->bitmap, '\0', size); - } - else - ret->bitmap = (char *)NULL; - return (ret); -} - -void -dispose_fd_bitmap (fdbp) - struct fd_bitmap *fdbp; -{ - FREE (fdbp->bitmap); - free (fdbp); -} - -void -close_fd_bitmap (fdbp) - struct fd_bitmap *fdbp; -{ - register int i; - - if (fdbp) - { - for (i = 0; i < fdbp->size; i++) - if (fdbp->bitmap[i]) - { - close (i); - fdbp->bitmap[i] = 0; - } - } -} - -/* Return the line number of the currently executing command. */ -int -executing_line_number () -{ - if (executing && showing_function_line == 0 && - (variable_context == 0 || interactive_shell == 0) && - currently_executing_command) - { -#if defined (COND_COMMAND) - if (currently_executing_command->type == cm_cond) - return currently_executing_command->value.Cond->line; -#endif -#if defined (DPAREN_ARITHMETIC) - else if (currently_executing_command->type == cm_arith) - return currently_executing_command->value.Arith->line; -#endif -#if defined (ARITH_FOR_COMMAND) - else if (currently_executing_command->type == cm_arith_for) - return currently_executing_command->value.ArithFor->line; -#endif - - return line_number; - } - else - return line_number; -} - -/* Execute the command passed in COMMAND. COMMAND is exactly what - read_command () places into GLOBAL_COMMAND. See "command.h" for the - details of the command structure. - - EXECUTION_SUCCESS or EXECUTION_FAILURE are the only possible - return values. Executing a command with nothing in it returns - EXECUTION_SUCCESS. */ -int -execute_command (command) - COMMAND *command; -{ - struct fd_bitmap *bitmap; - int result; - - current_fds_to_close = (struct fd_bitmap *)NULL; - bitmap = new_fd_bitmap (FD_BITMAP_DEFAULT_SIZE); - begin_unwind_frame ("execute-command"); - add_unwind_protect (dispose_fd_bitmap, (char *)bitmap); - - /* Just do the command, but not asynchronously. */ - result = execute_command_internal (command, 0, NO_PIPE, NO_PIPE, bitmap); - - dispose_fd_bitmap (bitmap); - discard_unwind_frame ("execute-command"); - -#if defined (PROCESS_SUBSTITUTION) - /* don't unlink fifos if we're in a shell function; wait until the function - returns. */ - if (variable_context == 0) - unlink_fifo_list (); -#endif /* PROCESS_SUBSTITUTION */ - - QUIT; - return (result); -} - -/* Return 1 if TYPE is a shell control structure type. */ -static int -shell_control_structure (type) - enum command_type type; -{ - switch (type) - { -#if defined (ARITH_FOR_COMMAND) - case cm_arith_for: -#endif -#if defined (SELECT_COMMAND) - case cm_select: -#endif -#if defined (DPAREN_ARITHMETIC) - case cm_arith: -#endif -#if defined (COND_COMMAND) - case cm_cond: -#endif - case cm_case: - case cm_while: - case cm_until: - case cm_if: - case cm_for: - case cm_group: - case cm_function_def: - return (1); - - default: - return (0); - } -} - -/* A function to use to unwind_protect the redirection undo list - for loops. */ -static void -cleanup_redirects (list) - REDIRECT *list; -{ - do_redirections (list, RX_ACTIVE); - dispose_redirects (list); -} - -#if 0 -/* Function to unwind_protect the redirections for functions and builtins. */ -static void -cleanup_func_redirects (list) - REDIRECT *list; -{ - do_redirections (list, RX_ACTIVE); -} -#endif - -void -dispose_exec_redirects () -{ - if (exec_redirection_undo_list) - { - dispose_redirects (exec_redirection_undo_list); - exec_redirection_undo_list = (REDIRECT *)NULL; - } -} - -#if defined (JOB_CONTROL) -/* A function to restore the signal mask to its proper value when the shell - is interrupted or errors occur while creating a pipeline. */ -static int -restore_signal_mask (set) - sigset_t *set; -{ - return (sigprocmask (SIG_SETMASK, set, (sigset_t *)NULL)); -} -#endif /* JOB_CONTROL */ - -#ifdef DEBUG -/* A debugging function that can be called from gdb, for instance. */ -void -open_files () -{ - register int i; - int f, fd_table_size; - - fd_table_size = getdtablesize (); - - fprintf (stderr, "pid %ld open files:", (long)getpid ()); - for (i = 3; i < fd_table_size; i++) - { - if ((f = fcntl (i, F_GETFD, 0)) != -1) - fprintf (stderr, " %d (%s)", i, f ? "close" : "open"); - } - fprintf (stderr, "\n"); -} -#endif - -static void -async_redirect_stdin () -{ - int fd; - - fd = open ("/dev/null", O_RDONLY); - if (fd > 0) - { - dup2 (fd, 0); - close (fd); - } - else if (fd < 0) - internal_error (_("cannot redirect standard input from /dev/null: %s"), strerror (errno)); -} - -#define DESCRIBE_PID(pid) do { if (interactive) describe_pid (pid); } while (0) - -/* Execute the command passed in COMMAND, perhaps doing it asynchrounously. - COMMAND is exactly what read_command () places into GLOBAL_COMMAND. - ASYNCHROUNOUS, if non-zero, says to do this command in the background. - PIPE_IN and PIPE_OUT are file descriptors saying where input comes - from and where it goes. They can have the value of NO_PIPE, which means - I/O is stdin/stdout. - FDS_TO_CLOSE is a list of file descriptors to close once the child has - been forked. This list often contains the unusable sides of pipes, etc. - - EXECUTION_SUCCESS or EXECUTION_FAILURE are the only possible - return values. Executing a command with nothing in it returns - EXECUTION_SUCCESS. */ -int -execute_command_internal (command, asynchronous, pipe_in, pipe_out, - fds_to_close) - COMMAND *command; - int asynchronous; - int pipe_in, pipe_out; - struct fd_bitmap *fds_to_close; -{ - int exec_result, user_subshell, invert, ignore_return, was_error_trap; - REDIRECT *my_undo_list, *exec_undo_list; - volatile int last_pid; - volatile int save_line_number; -#if defined (PROCESS_SUBSTITUTION) - volatile int ofifo, nfifo, osize, saved_fifo; - volatile char *ofifo_list; -#endif - -#if 0 - if (command == 0 || breaking || continuing || read_but_dont_execute) - return (EXECUTION_SUCCESS); -#else - if (breaking || continuing) - return (last_command_exit_value); - if (command == 0 || read_but_dont_execute) - return (EXECUTION_SUCCESS); -#endif - - QUIT; - run_pending_traps (); - -#if 0 - if (running_trap == 0) -#endif - currently_executing_command = command; - - invert = (command->flags & CMD_INVERT_RETURN) != 0; - - /* If we're inverting the return value and `set -e' has been executed, - we don't want a failing command to inadvertently cause the shell - to exit. */ - if (exit_immediately_on_error && invert) /* XXX */ - command->flags |= CMD_IGNORE_RETURN; /* XXX */ - - exec_result = EXECUTION_SUCCESS; - - /* If a command was being explicitly run in a subshell, or if it is - a shell control-structure, and it has a pipe, then we do the command - in a subshell. */ - if (command->type == cm_subshell && (command->flags & CMD_NO_FORK)) - return (execute_in_subshell (command, asynchronous, pipe_in, pipe_out, fds_to_close)); - -#if defined (COPROCESS_SUPPORT) - if (command->type == cm_coproc) - return (execute_coproc (command, pipe_in, pipe_out, fds_to_close)); -#endif - - user_subshell = command->type == cm_subshell || ((command->flags & CMD_WANT_SUBSHELL) != 0); - - if (command->type == cm_subshell || - (command->flags & (CMD_WANT_SUBSHELL|CMD_FORCE_SUBSHELL)) || - (shell_control_structure (command->type) && - (pipe_out != NO_PIPE || pipe_in != NO_PIPE || asynchronous))) - { - pid_t paren_pid; - - /* Fork a subshell, turn off the subshell bit, turn off job - control and call execute_command () on the command again. */ - line_number_for_err_trap = line_number; - paren_pid = make_child (savestring (make_command_string (command)), - asynchronous); - if (paren_pid == 0) - exit (execute_in_subshell (command, asynchronous, pipe_in, pipe_out, fds_to_close)); - /* NOTREACHED */ - else - { - close_pipes (pipe_in, pipe_out); - -#if defined (PROCESS_SUBSTITUTION) && defined (HAVE_DEV_FD) - if (variable_context == 0) /* wait until shell function completes */ - unlink_fifo_list (); -#endif - /* If we are part of a pipeline, and not the end of the pipeline, - then we should simply return and let the last command in the - pipe be waited for. If we are not in a pipeline, or are the - last command in the pipeline, then we wait for the subshell - and return its exit status as usual. */ - if (pipe_out != NO_PIPE) - return (EXECUTION_SUCCESS); - - stop_pipeline (asynchronous, (COMMAND *)NULL); - - if (asynchronous == 0) - { - was_error_trap = signal_is_trapped (ERROR_TRAP) && signal_is_ignored (ERROR_TRAP) == 0; - invert = (command->flags & CMD_INVERT_RETURN) != 0; - ignore_return = (command->flags & CMD_IGNORE_RETURN) != 0; - - exec_result = wait_for (paren_pid); - - /* If we have to, invert the return value. */ - if (invert) - exec_result = ((exec_result == EXECUTION_SUCCESS) - ? EXECUTION_FAILURE - : EXECUTION_SUCCESS); - - last_command_exit_value = exec_result; - if (user_subshell && was_error_trap && ignore_return == 0 && invert == 0 && exec_result != EXECUTION_SUCCESS) - { - save_line_number = line_number; - line_number = line_number_for_err_trap; - run_error_trap (); - line_number = save_line_number; - } - - if (user_subshell && ignore_return == 0 && invert == 0 && exit_immediately_on_error && exec_result != EXECUTION_SUCCESS) - { - run_pending_traps (); - jump_to_top_level (ERREXIT); - } - - return (last_command_exit_value); - } - else - { - DESCRIBE_PID (paren_pid); - - run_pending_traps (); - - return (EXECUTION_SUCCESS); - } - } - } - -#if defined (COMMAND_TIMING) - if (command->flags & CMD_TIME_PIPELINE) - { - if (asynchronous) - { - command->flags |= CMD_FORCE_SUBSHELL; - exec_result = execute_command_internal (command, 1, pipe_in, pipe_out, fds_to_close); - } - else - { - exec_result = time_command (command, asynchronous, pipe_in, pipe_out, fds_to_close); -#if 0 - if (running_trap == 0) -#endif - currently_executing_command = (COMMAND *)NULL; - } - return (exec_result); - } -#endif /* COMMAND_TIMING */ - - if (shell_control_structure (command->type) && command->redirects) - stdin_redir = stdin_redirects (command->redirects); - -#if defined (PROCESS_SUBSTITUTION) - if (variable_context != 0) - { - ofifo = num_fifos (); - ofifo_list = copy_fifo_list (&osize); - saved_fifo = 1; - } - else - saved_fifo = 0; -#endif - - /* Handle WHILE FOR CASE etc. with redirections. (Also '&' input - redirection.) */ - if (do_redirections (command->redirects, RX_ACTIVE|RX_UNDOABLE) != 0) - { - cleanup_redirects (redirection_undo_list); - redirection_undo_list = (REDIRECT *)NULL; - dispose_exec_redirects (); -#if defined (PROCESS_SUBSTITUTION) - if (saved_fifo) - free (ofifo_list); -#endif - return (last_command_exit_value = EXECUTION_FAILURE); - } - - if (redirection_undo_list) - { - /* XXX - why copy here? */ - my_undo_list = (REDIRECT *)copy_redirects (redirection_undo_list); - dispose_redirects (redirection_undo_list); - redirection_undo_list = (REDIRECT *)NULL; - } - else - my_undo_list = (REDIRECT *)NULL; - - if (exec_redirection_undo_list) - { - /* XXX - why copy here? */ - exec_undo_list = (REDIRECT *)copy_redirects (exec_redirection_undo_list); - dispose_redirects (exec_redirection_undo_list); - exec_redirection_undo_list = (REDIRECT *)NULL; - } - else - exec_undo_list = (REDIRECT *)NULL; - - if (my_undo_list || exec_undo_list) - begin_unwind_frame ("loop_redirections"); - - if (my_undo_list) - add_unwind_protect ((Function *)cleanup_redirects, my_undo_list); - - if (exec_undo_list) - add_unwind_protect ((Function *)dispose_redirects, exec_undo_list); - - ignore_return = (command->flags & CMD_IGNORE_RETURN) != 0; - - QUIT; - - switch (command->type) - { - case cm_simple: - { - save_line_number = line_number; - /* We can't rely on variables retaining their values across a - call to execute_simple_command if a longjmp occurs as the - result of a `return' builtin. This is true for sure with gcc. */ -#if defined (RECYCLES_PIDS) - last_made_pid = NO_PID; -#endif - last_pid = last_made_pid; - was_error_trap = signal_is_trapped (ERROR_TRAP) && signal_is_ignored (ERROR_TRAP) == 0; - - if (ignore_return && command->value.Simple) - command->value.Simple->flags |= CMD_IGNORE_RETURN; - if (command->flags & CMD_STDIN_REDIR) - command->value.Simple->flags |= CMD_STDIN_REDIR; - - line_number_for_err_trap = line_number = command->value.Simple->line; - exec_result = - execute_simple_command (command->value.Simple, pipe_in, pipe_out, - asynchronous, fds_to_close); - line_number = save_line_number; - - /* The temporary environment should be used for only the simple - command immediately following its definition. */ - dispose_used_env_vars (); - -#if (defined (ultrix) && defined (mips)) || defined (C_ALLOCA) - /* Reclaim memory allocated with alloca () on machines which - may be using the alloca emulation code. */ - (void) alloca (0); -#endif /* (ultrix && mips) || C_ALLOCA */ - - /* If we forked to do the command, then we must wait_for () - the child. */ - - /* XXX - this is something to watch out for if there are problems - when the shell is compiled without job control. */ - if (already_making_children && pipe_out == NO_PIPE && - last_made_pid != last_pid) - { - stop_pipeline (asynchronous, (COMMAND *)NULL); - - if (asynchronous) - { - DESCRIBE_PID (last_made_pid); - } - else -#if !defined (JOB_CONTROL) - /* Do not wait for asynchronous processes started from - startup files. */ - if (last_made_pid != last_asynchronous_pid) -#endif - /* When executing a shell function that executes other - commands, this causes the last simple command in - the function to be waited for twice. This also causes - subshells forked to execute builtin commands (e.g., in - pipelines) to be waited for twice. */ - exec_result = wait_for (last_made_pid); - } - } - - /* 2009/02/13 -- pipeline failure is processed elsewhere. This handles - only the failure of a simple command. */ - if (was_error_trap && ignore_return == 0 && invert == 0 && pipe_in == NO_PIPE && pipe_out == NO_PIPE && exec_result != EXECUTION_SUCCESS) - { - last_command_exit_value = exec_result; - line_number = line_number_for_err_trap; - run_error_trap (); - line_number = save_line_number; - } - - if (ignore_return == 0 && invert == 0 && - ((posixly_correct && interactive == 0 && special_builtin_failed) || - (exit_immediately_on_error && pipe_in == NO_PIPE && pipe_out == NO_PIPE && exec_result != EXECUTION_SUCCESS))) - { - last_command_exit_value = exec_result; - run_pending_traps (); - jump_to_top_level (ERREXIT); - } - - break; - - case cm_for: - if (ignore_return) - command->value.For->flags |= CMD_IGNORE_RETURN; - exec_result = execute_for_command (command->value.For); - break; - -#if defined (ARITH_FOR_COMMAND) - case cm_arith_for: - if (ignore_return) - command->value.ArithFor->flags |= CMD_IGNORE_RETURN; - exec_result = execute_arith_for_command (command->value.ArithFor); - break; -#endif - -#if defined (SELECT_COMMAND) - case cm_select: - if (ignore_return) - command->value.Select->flags |= CMD_IGNORE_RETURN; - exec_result = execute_select_command (command->value.Select); - break; -#endif - - case cm_case: - if (ignore_return) - command->value.Case->flags |= CMD_IGNORE_RETURN; - exec_result = execute_case_command (command->value.Case); - break; - - case cm_while: - if (ignore_return) - command->value.While->flags |= CMD_IGNORE_RETURN; - exec_result = execute_while_command (command->value.While); - break; - - case cm_until: - if (ignore_return) - command->value.While->flags |= CMD_IGNORE_RETURN; - exec_result = execute_until_command (command->value.While); - break; - - case cm_if: - if (ignore_return) - command->value.If->flags |= CMD_IGNORE_RETURN; - exec_result = execute_if_command (command->value.If); - break; - - case cm_group: - - /* This code can be executed from either of two paths: an explicit - '{}' command, or via a function call. If we are executed via a - function call, we have already taken care of the function being - executed in the background (down there in execute_simple_command ()), - and this command should *not* be marked as asynchronous. If we - are executing a regular '{}' group command, and asynchronous == 1, - we must want to execute the whole command in the background, so we - need a subshell, and we want the stuff executed in that subshell - (this group command) to be executed in the foreground of that - subshell (i.e. there will not be *another* subshell forked). - - What we do is to force a subshell if asynchronous, and then call - execute_command_internal again with asynchronous still set to 1, - but with the original group command, so the printed command will - look right. - - The code above that handles forking off subshells will note that - both subshell and async are on, and turn off async in the child - after forking the subshell (but leave async set in the parent, so - the normal call to describe_pid is made). This turning off - async is *crucial*; if it is not done, this will fall into an - infinite loop of executions through this spot in subshell after - subshell until the process limit is exhausted. */ - - if (asynchronous) - { - command->flags |= CMD_FORCE_SUBSHELL; - exec_result = - execute_command_internal (command, 1, pipe_in, pipe_out, - fds_to_close); - } - else - { - if (ignore_return && command->value.Group->command) - command->value.Group->command->flags |= CMD_IGNORE_RETURN; - exec_result = - execute_command_internal (command->value.Group->command, - asynchronous, pipe_in, pipe_out, - fds_to_close); - } - break; - - case cm_connection: - exec_result = execute_connection (command, asynchronous, - pipe_in, pipe_out, fds_to_close); - break; - -#if defined (DPAREN_ARITHMETIC) - case cm_arith: - was_error_trap = signal_is_trapped (ERROR_TRAP) && signal_is_ignored (ERROR_TRAP) == 0; - if (ignore_return) - command->value.Arith->flags |= CMD_IGNORE_RETURN; - line_number_for_err_trap = save_line_number = line_number; - exec_result = execute_arith_command (command->value.Arith); - line_number = save_line_number; - - if (was_error_trap && ignore_return == 0 && invert == 0 && exec_result != EXECUTION_SUCCESS) - { - last_command_exit_value = exec_result; - save_line_number = line_number; - line_number = line_number_for_err_trap; - run_error_trap (); - line_number = save_line_number; - } - - if (ignore_return == 0 && invert == 0 && exit_immediately_on_error && exec_result != EXECUTION_SUCCESS) - { - last_command_exit_value = exec_result; - run_pending_traps (); - jump_to_top_level (ERREXIT); - } - - break; -#endif - -#if defined (COND_COMMAND) - case cm_cond: - was_error_trap = signal_is_trapped (ERROR_TRAP) && signal_is_ignored (ERROR_TRAP) == 0; - if (ignore_return) - command->value.Cond->flags |= CMD_IGNORE_RETURN; - - line_number_for_err_trap = save_line_number = line_number; - exec_result = execute_cond_command (command->value.Cond); - line_number = save_line_number; - - if (was_error_trap && ignore_return == 0 && invert == 0 && exec_result != EXECUTION_SUCCESS) - { - last_command_exit_value = exec_result; - save_line_number = line_number; - line_number = line_number_for_err_trap; - run_error_trap (); - line_number = save_line_number; - } - - if (ignore_return == 0 && invert == 0 && exit_immediately_on_error && exec_result != EXECUTION_SUCCESS) - { - last_command_exit_value = exec_result; - run_pending_traps (); - jump_to_top_level (ERREXIT); - } - - break; -#endif - - case cm_function_def: - exec_result = execute_intern_function (command->value.Function_def->name, - command->value.Function_def); - break; - - default: - command_error ("execute_command", CMDERR_BADTYPE, command->type, 0); - } - - if (my_undo_list) - { - do_redirections (my_undo_list, RX_ACTIVE); - dispose_redirects (my_undo_list); - } - - if (exec_undo_list) - dispose_redirects (exec_undo_list); - - if (my_undo_list || exec_undo_list) - discard_unwind_frame ("loop_redirections"); - -#if defined (PROCESS_SUBSTITUTION) - if (saved_fifo) - { - nfifo = num_fifos (); - if (nfifo > ofifo) - close_new_fifos (ofifo_list, osize); - free (ofifo_list); - } -#endif - - /* Invert the return value if we have to */ - if (invert) - exec_result = (exec_result == EXECUTION_SUCCESS) - ? EXECUTION_FAILURE - : EXECUTION_SUCCESS; - -#if defined (DPAREN_ARITHMETIC) || defined (COND_COMMAND) - /* This is where we set PIPESTATUS from the exit status of the appropriate - compound commands (the ones that look enough like simple commands to - cause confusion). We might be able to optimize by not doing this if - subshell_environment != 0. */ - switch (command->type) - { -# if defined (DPAREN_ARITHMETIC) - case cm_arith: -# endif -# if defined (COND_COMMAND) - case cm_cond: -# endif - set_pipestatus_from_exit (exec_result); - break; - } -#endif - - last_command_exit_value = exec_result; - run_pending_traps (); -#if 0 - if (running_trap == 0) -#endif - currently_executing_command = (COMMAND *)NULL; - - return (last_command_exit_value); -} - -#if defined (COMMAND_TIMING) - -#if defined (HAVE_GETRUSAGE) && defined (HAVE_GETTIMEOFDAY) -extern struct timeval *difftimeval __P((struct timeval *, struct timeval *, struct timeval *)); -extern struct timeval *addtimeval __P((struct timeval *, struct timeval *, struct timeval *)); -extern int timeval_to_cpu __P((struct timeval *, struct timeval *, struct timeval *)); -#endif - -#define POSIX_TIMEFORMAT "real %2R\nuser %2U\nsys %2S" -#define BASH_TIMEFORMAT "\nreal\t%3lR\nuser\t%3lU\nsys\t%3lS" - -static const int precs[] = { 0, 100, 10, 1 }; - -/* Expand one `%'-prefixed escape sequence from a time format string. */ -static int -mkfmt (buf, prec, lng, sec, sec_fraction) - char *buf; - int prec, lng; - time_t sec; - int sec_fraction; -{ - time_t min; - char abuf[INT_STRLEN_BOUND(time_t) + 1]; - int ind, aind; - - ind = 0; - abuf[sizeof(abuf) - 1] = '\0'; - - /* If LNG is non-zero, we want to decompose SEC into minutes and seconds. */ - if (lng) - { - min = sec / 60; - sec %= 60; - aind = sizeof(abuf) - 2; - do - abuf[aind--] = (min % 10) + '0'; - while (min /= 10); - aind++; - while (abuf[aind]) - buf[ind++] = abuf[aind++]; - buf[ind++] = 'm'; - } - - /* Now add the seconds. */ - aind = sizeof (abuf) - 2; - do - abuf[aind--] = (sec % 10) + '0'; - while (sec /= 10); - aind++; - while (abuf[aind]) - buf[ind++] = abuf[aind++]; - - /* We want to add a decimal point and PREC places after it if PREC is - nonzero. PREC is not greater than 3. SEC_FRACTION is between 0 - and 999. */ - if (prec != 0) - { - buf[ind++] = '.'; - for (aind = 1; aind <= prec; aind++) - { - buf[ind++] = (sec_fraction / precs[aind]) + '0'; - sec_fraction %= precs[aind]; - } - } - - if (lng) - buf[ind++] = 's'; - buf[ind] = '\0'; - - return (ind); -} - -/* Interpret the format string FORMAT, interpolating the following escape - sequences: - %[prec][l][RUS] - - where the optional `prec' is a precision, meaning the number of - characters after the decimal point, the optional `l' means to format - using minutes and seconds (MMmNN[.FF]s), like the `times' builtin', - and the last character is one of - - R number of seconds of `real' time - U number of seconds of `user' time - S number of seconds of `system' time - - An occurrence of `%%' in the format string is translated to a `%'. The - result is printed to FP, a pointer to a FILE. The other variables are - the seconds and thousandths of a second of real, user, and system time, - resectively. */ -static void -print_formatted_time (fp, format, rs, rsf, us, usf, ss, ssf, cpu) - FILE *fp; - char *format; - time_t rs; - int rsf; - time_t us; - int usf; - time_t ss; - int ssf, cpu; -{ - int prec, lng, len; - char *str, *s, ts[INT_STRLEN_BOUND (time_t) + sizeof ("mSS.FFFF")]; - time_t sum; - int sum_frac; - int sindex, ssize; - - len = strlen (format); - ssize = (len + 64) - (len % 64); - str = (char *)xmalloc (ssize); - sindex = 0; - - for (s = format; *s; s++) - { - if (*s != '%' || s[1] == '\0') - { - RESIZE_MALLOCED_BUFFER (str, sindex, 1, ssize, 64); - str[sindex++] = *s; - } - else if (s[1] == '%') - { - s++; - RESIZE_MALLOCED_BUFFER (str, sindex, 1, ssize, 64); - str[sindex++] = *s; - } - else if (s[1] == 'P') - { - s++; -#if 0 - /* clamp CPU usage at 100% */ - if (cpu > 10000) - cpu = 10000; -#endif - sum = cpu / 100; - sum_frac = (cpu % 100) * 10; - len = mkfmt (ts, 2, 0, sum, sum_frac); - RESIZE_MALLOCED_BUFFER (str, sindex, len, ssize, 64); - strcpy (str + sindex, ts); - sindex += len; - } - else - { - prec = 3; /* default is three places past the decimal point. */ - lng = 0; /* default is to not use minutes or append `s' */ - s++; - if (DIGIT (*s)) /* `precision' */ - { - prec = *s++ - '0'; - if (prec > 3) prec = 3; - } - if (*s == 'l') /* `length extender' */ - { - lng = 1; - s++; - } - if (*s == 'R' || *s == 'E') - len = mkfmt (ts, prec, lng, rs, rsf); - else if (*s == 'U') - len = mkfmt (ts, prec, lng, us, usf); - else if (*s == 'S') - len = mkfmt (ts, prec, lng, ss, ssf); - else - { - internal_error (_("TIMEFORMAT: `%c': invalid format character"), *s); - free (str); - return; - } - RESIZE_MALLOCED_BUFFER (str, sindex, len, ssize, 64); - strcpy (str + sindex, ts); - sindex += len; - } - } - - str[sindex] = '\0'; - fprintf (fp, "%s\n", str); - fflush (fp); - - free (str); -} - -static int -time_command (command, asynchronous, pipe_in, pipe_out, fds_to_close) - COMMAND *command; - int asynchronous, pipe_in, pipe_out; - struct fd_bitmap *fds_to_close; -{ - int rv, posix_time, old_flags, nullcmd; - time_t rs, us, ss; - int rsf, usf, ssf; - int cpu; - char *time_format; - -#if defined (HAVE_GETRUSAGE) && defined (HAVE_GETTIMEOFDAY) - struct timeval real, user, sys; - struct timeval before, after; -# if defined (HAVE_STRUCT_TIMEZONE) - struct timezone dtz; /* posix doesn't define this */ -# endif - struct rusage selfb, selfa, kidsb, kidsa; /* a = after, b = before */ -#else -# if defined (HAVE_TIMES) - clock_t tbefore, tafter, real, user, sys; - struct tms before, after; -# endif -#endif - -#if defined (HAVE_GETRUSAGE) && defined (HAVE_GETTIMEOFDAY) -# if defined (HAVE_STRUCT_TIMEZONE) - gettimeofday (&before, &dtz); -# else - gettimeofday (&before, (void *)NULL); -# endif /* !HAVE_STRUCT_TIMEZONE */ - getrusage (RUSAGE_SELF, &selfb); - getrusage (RUSAGE_CHILDREN, &kidsb); -#else -# if defined (HAVE_TIMES) - tbefore = times (&before); -# endif -#endif - - posix_time = command && (command->flags & CMD_TIME_POSIX); - - nullcmd = (command == 0) || (command->type == cm_simple && command->value.Simple->words == 0 && command->value.Simple->redirects == 0); - if (posixly_correct && nullcmd) - { -#if defined (HAVE_GETRUSAGE) - selfb.ru_utime.tv_sec = kidsb.ru_utime.tv_sec = selfb.ru_stime.tv_sec = kidsb.ru_stime.tv_sec = 0; - selfb.ru_utime.tv_usec = kidsb.ru_utime.tv_usec = selfb.ru_stime.tv_usec = kidsb.ru_stime.tv_usec = 0; - before.tv_sec = shell_start_time; - before.tv_usec = 0; -#else - before.tms_utime = before.tms_stime = before.tms_cutime = before.tms_cstime = 0; - tbefore = shell_start_time; -#endif - } - - old_flags = command->flags; - command->flags &= ~(CMD_TIME_PIPELINE|CMD_TIME_POSIX); - rv = execute_command_internal (command, asynchronous, pipe_in, pipe_out, fds_to_close); - command->flags = old_flags; - - rs = us = ss = 0; - rsf = usf = ssf = cpu = 0; - -#if defined (HAVE_GETRUSAGE) && defined (HAVE_GETTIMEOFDAY) -# if defined (HAVE_STRUCT_TIMEZONE) - gettimeofday (&after, &dtz); -# else - gettimeofday (&after, (void *)NULL); -# endif /* !HAVE_STRUCT_TIMEZONE */ - getrusage (RUSAGE_SELF, &selfa); - getrusage (RUSAGE_CHILDREN, &kidsa); - - difftimeval (&real, &before, &after); - timeval_to_secs (&real, &rs, &rsf); - - addtimeval (&user, difftimeval(&after, &selfb.ru_utime, &selfa.ru_utime), - difftimeval(&before, &kidsb.ru_utime, &kidsa.ru_utime)); - timeval_to_secs (&user, &us, &usf); - - addtimeval (&sys, difftimeval(&after, &selfb.ru_stime, &selfa.ru_stime), - difftimeval(&before, &kidsb.ru_stime, &kidsa.ru_stime)); - timeval_to_secs (&sys, &ss, &ssf); - - cpu = timeval_to_cpu (&real, &user, &sys); -#else -# if defined (HAVE_TIMES) - tafter = times (&after); - - real = tafter - tbefore; - clock_t_to_secs (real, &rs, &rsf); - - user = (after.tms_utime - before.tms_utime) + (after.tms_cutime - before.tms_cutime); - clock_t_to_secs (user, &us, &usf); - - sys = (after.tms_stime - before.tms_stime) + (after.tms_cstime - before.tms_cstime); - clock_t_to_secs (sys, &ss, &ssf); - - cpu = (real == 0) ? 0 : ((user + sys) * 10000) / real; - -# else - rs = us = ss = 0; - rsf = usf = ssf = cpu = 0; -# endif -#endif - - if (posix_time) - time_format = POSIX_TIMEFORMAT; - else if ((time_format = get_string_value ("TIMEFORMAT")) == 0) - { - if (posixly_correct && nullcmd) - time_format = "user\t%2lU\nsys\t%2lS"; - else - time_format = BASH_TIMEFORMAT; - } - if (time_format && *time_format) - print_formatted_time (stderr, time_format, rs, rsf, us, usf, ss, ssf, cpu); - - return rv; -} -#endif /* COMMAND_TIMING */ - -/* Execute a command that's supposed to be in a subshell. This must be - called after make_child and we must be running in the child process. - The caller will return or exit() immediately with the value this returns. */ -static int -execute_in_subshell (command, asynchronous, pipe_in, pipe_out, fds_to_close) - COMMAND *command; - int asynchronous; - int pipe_in, pipe_out; - struct fd_bitmap *fds_to_close; -{ - int user_subshell, return_code, function_value, should_redir_stdin, invert; - int ois, user_coproc; - int result; - volatile COMMAND *tcom; - - USE_VAR(user_subshell); - USE_VAR(user_coproc); - USE_VAR(invert); - USE_VAR(tcom); - USE_VAR(asynchronous); - - subshell_level++; - should_redir_stdin = (asynchronous && (command->flags & CMD_STDIN_REDIR) && - pipe_in == NO_PIPE && - stdin_redirects (command->redirects) == 0); - - invert = (command->flags & CMD_INVERT_RETURN) != 0; - user_subshell = command->type == cm_subshell || ((command->flags & CMD_WANT_SUBSHELL) != 0); - user_coproc = command->type == cm_coproc; - - command->flags &= ~(CMD_FORCE_SUBSHELL | CMD_WANT_SUBSHELL | CMD_INVERT_RETURN); - - /* If a command is asynchronous in a subshell (like ( foo ) & or - the special case of an asynchronous GROUP command where the - the subshell bit is turned on down in case cm_group: below), - turn off `asynchronous', so that two subshells aren't spawned. - XXX - asynchronous used to be set to 0 in this block, but that - means that setup_async_signals was never run. Now it's set to - 0 after subshell_environment is set appropriately and setup_async_signals - is run. - - This seems semantically correct to me. For example, - ( foo ) & seems to say ``do the command `foo' in a subshell - environment, but don't wait for that subshell to finish'', - and "{ foo ; bar ; } &" seems to me to be like functions or - builtins in the background, which executed in a subshell - environment. I just don't see the need to fork two subshells. */ - - /* Don't fork again, we are already in a subshell. A `doubly - async' shell is not interactive, however. */ - if (asynchronous) - { -#if defined (JOB_CONTROL) - /* If a construct like ( exec xxx yyy ) & is given while job - control is active, we want to prevent exec from putting the - subshell back into the original process group, carefully - undoing all the work we just did in make_child. */ - original_pgrp = -1; -#endif /* JOB_CONTROL */ - ois = interactive_shell; - interactive_shell = 0; - /* This test is to prevent alias expansion by interactive shells that - run `(command) &' but to allow scripts that have enabled alias - expansion with `shopt -s expand_alias' to continue to expand - aliases. */ - if (ois != interactive_shell) - expand_aliases = 0; - } - - /* Subshells are neither login nor interactive. */ - login_shell = interactive = 0; - - if (user_subshell) - subshell_environment = SUBSHELL_PAREN; - else - { - subshell_environment = 0; /* XXX */ - if (asynchronous) - subshell_environment |= SUBSHELL_ASYNC; - if (pipe_in != NO_PIPE || pipe_out != NO_PIPE) - subshell_environment |= SUBSHELL_PIPE; - if (user_coproc) - subshell_environment |= SUBSHELL_COPROC; - } - - reset_terminating_signals (); /* in sig.c */ - /* Cancel traps, in trap.c. */ - /* Reset the signal handlers in the child, but don't free the - trap strings. Set a flag noting that we have to free the - trap strings if we run trap to change a signal disposition. */ - reset_signal_handlers (); - subshell_environment |= SUBSHELL_RESETTRAP; - - /* Make sure restore_original_signals doesn't undo the work done by - make_child to ensure that asynchronous children are immune to SIGINT - and SIGQUIT. Turn off asynchronous to make sure more subshells are - not spawned. */ - if (asynchronous) - { - setup_async_signals (); - asynchronous = 0; - } - -#if defined (JOB_CONTROL) - set_sigchld_handler (); -#endif /* JOB_CONTROL */ - - set_sigint_handler (); - -#if defined (JOB_CONTROL) - /* Delete all traces that there were any jobs running. This is - only for subshells. */ - without_job_control (); -#endif /* JOB_CONTROL */ - - if (fds_to_close) - close_fd_bitmap (fds_to_close); - - do_piping (pipe_in, pipe_out); - -#if defined (COPROCESS_SUPPORT) - coproc_closeall (); -#endif - - /* If this is a user subshell, set a flag if stdin was redirected. - This is used later to decide whether to redirect fd 0 to - /dev/null for async commands in the subshell. This adds more - sh compatibility, but I'm not sure it's the right thing to do. */ - if (user_subshell) - { - stdin_redir = stdin_redirects (command->redirects); - restore_default_signal (0); - } - - /* If this is an asynchronous command (command &), we want to - redirect the standard input from /dev/null in the absence of - any specific redirection involving stdin. */ - if (should_redir_stdin && stdin_redir == 0) - async_redirect_stdin (); - - /* Do redirections, then dispose of them before recursive call. */ - if (command->redirects) - { - if (do_redirections (command->redirects, RX_ACTIVE) != 0) - exit (invert ? EXECUTION_SUCCESS : EXECUTION_FAILURE); - - dispose_redirects (command->redirects); - command->redirects = (REDIRECT *)NULL; - } - - if (command->type == cm_subshell) - tcom = command->value.Subshell->command; - else if (user_coproc) - tcom = command->value.Coproc->command; - else - tcom = command; - - if (command->flags & CMD_TIME_PIPELINE) - tcom->flags |= CMD_TIME_PIPELINE; - if (command->flags & CMD_TIME_POSIX) - tcom->flags |= CMD_TIME_POSIX; - - /* Make sure the subshell inherits any CMD_IGNORE_RETURN flag. */ - if ((command->flags & CMD_IGNORE_RETURN) && tcom != command) - tcom->flags |= CMD_IGNORE_RETURN; - - /* If this is a simple command, tell execute_disk_command that it - might be able to get away without forking and simply exec. - This means things like ( sleep 10 ) will only cause one fork. - If we're timing the command or inverting its return value, however, - we cannot do this optimization. */ - if ((user_subshell || user_coproc) && (tcom->type == cm_simple || tcom->type == cm_subshell) && - ((tcom->flags & CMD_TIME_PIPELINE) == 0) && - ((tcom->flags & CMD_INVERT_RETURN) == 0)) - { - tcom->flags |= CMD_NO_FORK; - if (tcom->type == cm_simple) - tcom->value.Simple->flags |= CMD_NO_FORK; - } - - invert = (tcom->flags & CMD_INVERT_RETURN) != 0; - tcom->flags &= ~CMD_INVERT_RETURN; - - result = setjmp (top_level); - - /* If we're inside a function while executing this subshell, we - need to handle a possible `return'. */ - function_value = 0; - if (return_catch_flag) - function_value = setjmp (return_catch); - - /* If we're going to exit the shell, we don't want to invert the return - status. */ - if (result == EXITPROG) - invert = 0, return_code = last_command_exit_value; - else if (result) - return_code = EXECUTION_FAILURE; - else if (function_value) - return_code = return_catch_value; - else - return_code = execute_command_internal ((COMMAND *)tcom, asynchronous, NO_PIPE, NO_PIPE, fds_to_close); - - /* If we are asked to, invert the return value. */ - if (invert) - return_code = (return_code == EXECUTION_SUCCESS) ? EXECUTION_FAILURE - : EXECUTION_SUCCESS; - - /* If we were explicitly placed in a subshell with (), we need - to do the `shell cleanup' things, such as running traps[0]. */ - if (user_subshell && signal_is_trapped (0)) - { - last_command_exit_value = return_code; - return_code = run_exit_trap (); - } - - subshell_level--; - return (return_code); - /* NOTREACHED */ -} - -#if defined (COPROCESS_SUPPORT) -#define COPROC_MAX 16 - -typedef struct cpelement - { - struct cpelement *next; - struct coproc *coproc; - } -cpelement_t; - -typedef struct cplist - { - struct cpelement *head; - struct cpelement *tail; - int ncoproc; - } -cplist_t; - -static struct cpelement *cpe_alloc __P((struct coproc *)); -static void cpe_dispose __P((struct cpelement *)); -static struct cpelement *cpl_add __P((struct coproc *)); -static struct cpelement *cpl_delete __P((pid_t)); -static void cpl_reap __P((void)); -static void cpl_flush __P((void)); -static void cpl_closeall __P((void)); -static struct cpelement *cpl_search __P((pid_t)); -static struct cpelement *cpl_searchbyname __P((const char *)); -static void cpl_prune __P((void)); - -static void coproc_free __P((struct coproc *)); - -/* Will go away when there is fully-implemented support for multiple coprocs. */ -Coproc sh_coproc = { 0, NO_PID, -1, -1, 0, 0, 0, 0 }; - -cplist_t coproc_list = {0, 0, 0}; - -/* Functions to manage the list of coprocs */ - -static struct cpelement * -cpe_alloc (cp) - Coproc *cp; -{ - struct cpelement *cpe; - - cpe = (struct cpelement *)xmalloc (sizeof (struct cpelement)); - cpe->coproc = cp; - cpe->next = (struct cpelement *)0; - return cpe; -} - -static void -cpe_dispose (cpe) - struct cpelement *cpe; -{ - free (cpe); -} - -static struct cpelement * -cpl_add (cp) - Coproc *cp; -{ - struct cpelement *cpe; - - cpe = cpe_alloc (cp); - - if (coproc_list.head == 0) - { - coproc_list.head = coproc_list.tail = cpe; - coproc_list.ncoproc = 0; /* just to make sure */ - } - else - { - coproc_list.tail->next = cpe; - coproc_list.tail = cpe; - } - coproc_list.ncoproc++; - - return cpe; -} - -static struct cpelement * -cpl_delete (pid) - pid_t pid; -{ - struct cpelement *prev, *p; - - for (prev = p = coproc_list.head; p; prev = p, p = p->next) - if (p->coproc->c_pid == pid) - { - prev->next = p->next; /* remove from list */ - break; - } - - if (p == 0) - return 0; /* not found */ - -#if defined (DEBUG) - itrace("cpl_delete: deleting %d", pid); -#endif - - /* Housekeeping in the border cases. */ - if (p == coproc_list.head) - coproc_list.head = coproc_list.head->next; - else if (p == coproc_list.tail) - coproc_list.tail = prev; - - coproc_list.ncoproc--; - if (coproc_list.ncoproc == 0) - coproc_list.head = coproc_list.tail = 0; - else if (coproc_list.ncoproc == 1) - coproc_list.tail = coproc_list.head; /* just to make sure */ - - return (p); -} - -static void -cpl_reap () -{ - struct cpelement *p, *next, *nh, *nt; - - /* Build a new list by removing dead coprocs and fix up the coproc_list - pointers when done. */ - nh = nt = next = (struct cpelement *)0; - for (p = coproc_list.head; p; p = next) - { - next = p->next; - if (p->coproc->c_flags & COPROC_DEAD) - { - coproc_list.ncoproc--; /* keep running count, fix up pointers later */ - -#if defined (DEBUG) - itrace("cpl_reap: deleting %d", p->coproc->c_pid); -#endif - - coproc_dispose (p->coproc); - cpe_dispose (p); - } - else if (nh == 0) - nh = nt = p; - else - { - nt->next = p; - nt = nt->next; - } - } - - if (coproc_list.ncoproc == 0) - coproc_list.head = coproc_list.tail = 0; - else - { - if (nt) - nt->next = 0; - coproc_list.head = nh; - coproc_list.tail = nt; - if (coproc_list.ncoproc == 1) - coproc_list.tail = coproc_list.head; /* just to make sure */ - } -} - -/* Clear out the list of saved statuses */ -static void -cpl_flush () -{ - struct cpelement *cpe, *p; - - for (cpe = coproc_list.head; cpe; ) - { - p = cpe; - cpe = cpe->next; - - coproc_dispose (p->coproc); - cpe_dispose (p); - } - - coproc_list.head = coproc_list.tail = 0; - coproc_list.ncoproc = 0; -} - -static void -cpl_closeall () -{ - struct cpelement *cpe; - - for (cpe = coproc_list.head; cpe; cpe = cpe->next) - coproc_close (cpe->coproc); -} - -static void -cpl_fdchk (fd) - int fd; -{ - struct cpelement *cpe; - - for (cpe = coproc_list.head; cpe; cpe = cpe->next) - coproc_checkfd (cpe->coproc, fd); -} - -/* Search for PID in the list of coprocs; return the cpelement struct if - found. If not found, return NULL. */ -static struct cpelement * -cpl_search (pid) - pid_t pid; -{ - struct cpelement *cpe; - - for (cpe = coproc_list.head ; cpe; cpe = cpe->next) - if (cpe->coproc->c_pid == pid) - return cpe; - return (struct cpelement *)NULL; -} - -/* Search for the coproc named NAME in the list of coprocs; return the - cpelement struct if found. If not found, return NULL. */ -static struct cpelement * -cpl_searchbyname (name) - const char *name; -{ - struct cpelement *cp; - - for (cp = coproc_list.head ; cp; cp = cp->next) - if (STREQ (cp->coproc->c_name, name)) - return cp; - return (struct cpelement *)NULL; -} - -#if 0 -static void -cpl_prune () -{ - struct cpelement *cp; - - while (coproc_list.head && coproc_list.ncoproc > COPROC_MAX) - { - cp = coproc_list.head; - coproc_list.head = coproc_list.head->next; - coproc_dispose (cp->coproc); - cpe_dispose (cp); - coproc_list.ncoproc--; - } -} -#endif - -/* These currently use a single global "shell coproc" but are written in a - way to not preclude additional coprocs later (using the list management - package above). */ - -struct coproc * -getcoprocbypid (pid) - pid_t pid; -{ -#if MULTIPLE_COPROCS - struct cpelement *p; - - p = cpl_search (pid); - return (p ? p->coproc : 0); -#else - return (pid == sh_coproc.c_pid ? &sh_coproc : 0); -#endif -} - -struct coproc * -getcoprocbyname (name) - const char *name; -{ -#if MULTIPLE_COPROCS - struct cpelement *p; - - p = cpl_searchbyname (name); - return (p ? p->coproc : 0); -#else - return ((sh_coproc.c_name && STREQ (sh_coproc.c_name, name)) ? &sh_coproc : 0); -#endif -} - -void -coproc_init (cp) - struct coproc *cp; -{ - cp->c_name = 0; - cp->c_pid = NO_PID; - cp->c_rfd = cp->c_wfd = -1; - cp->c_rsave = cp->c_wsave = -1; - cp->c_flags = cp->c_status = 0; -} - -struct coproc * -coproc_alloc (name, pid) - char *name; - pid_t pid; -{ - struct coproc *cp; - -#if MULTIPLE_COPROCS - cp = (struct coproc *)xmalloc (sizeof (struct coproc)); -#else - cp = &sh_coproc; -#endif - coproc_init (cp); - - cp->c_name = savestring (name); - cp->c_pid = pid; - -#if MULTIPLE_COPROCS - cpl_add (cp); -#endif - - return (cp); -} - -static void -coproc_free (cp) - struct coproc *cp; -{ - free (cp); -} - -void -coproc_dispose (cp) - struct coproc *cp; -{ - if (cp == 0) - return; - - coproc_unsetvars (cp); - FREE (cp->c_name); - coproc_close (cp); -#if MULTIPLE_COPROCS - coproc_free (cp); -#else - coproc_init (cp); -#endif -} - -/* Placeholder for now. Will require changes for multiple coprocs */ -void -coproc_flush () -{ -#if MULTIPLE_COPROCS - cpl_flush (); -#else - coproc_dispose (&sh_coproc); -#endif -} - -void -coproc_close (cp) - struct coproc *cp; -{ - if (cp->c_rfd >= 0) - { - close (cp->c_rfd); - cp->c_rfd = -1; - } - if (cp->c_wfd >= 0) - { - close (cp->c_wfd); - cp->c_wfd = -1; - } - cp->c_rsave = cp->c_wsave = -1; -} - -void -coproc_closeall () -{ -#if MULTIPLE_COPROCS - cpl_closeall (); -#else - coproc_close (&sh_coproc); /* XXX - will require changes for multiple coprocs */ -#endif -} - -void -coproc_reap () -{ -#if MULTIPLE_COPROCS - cpl_reap (); -#else - struct coproc *cp; - - cp = &sh_coproc; /* XXX - will require changes for multiple coprocs */ - if (cp && (cp->c_flags & COPROC_DEAD)) - coproc_dispose (cp); -#endif -} - -void -coproc_rclose (cp, fd) - struct coproc *cp; - int fd; -{ - if (cp->c_rfd >= 0 && cp->c_rfd == fd) - { - close (cp->c_rfd); - cp->c_rfd = -1; - } -} - -void -coproc_wclose (cp, fd) - struct coproc *cp; - int fd; -{ - if (cp->c_wfd >= 0 && cp->c_wfd == fd) - { - close (cp->c_wfd); - cp->c_wfd = -1; - } -} - -void -coproc_checkfd (cp, fd) - struct coproc *cp; - int fd; -{ - int update; - - update = 0; - if (cp->c_rfd >= 0 && cp->c_rfd == fd) - update = cp->c_rfd = -1; - if (cp->c_wfd >= 0 && cp->c_wfd == fd) - update = cp->c_wfd = -1; - if (update) - coproc_setvars (cp); -} - -void -coproc_fdchk (fd) - int fd; -{ -#if MULTIPLE_COPROCS - cpl_fdchk (fd); -#else - coproc_checkfd (&sh_coproc, fd); -#endif -} - -void -coproc_fdclose (cp, fd) - struct coproc *cp; - int fd; -{ - coproc_rclose (cp, fd); - coproc_wclose (cp, fd); - coproc_setvars (cp); -} - -void -coproc_fdsave (cp) - struct coproc *cp; -{ - cp->c_rsave = cp->c_rfd; - cp->c_wsave = cp->c_wfd; -} - -void -coproc_fdrestore (cp) - struct coproc *cp; -{ - cp->c_rfd = cp->c_rsave; - cp->c_wfd = cp->c_wsave; -} - -void -coproc_pidchk (pid, status) - pid_t pid; -{ - struct coproc *cp; - -#if MULTIPLE_COPROCS - struct cpelement *cpe; - - cpe = cpl_delete (pid); - cp = cpe ? cpe->coproc : 0; -#else - cp = getcoprocbypid (pid); -#endif - if (cp) - { -#if 0 - itrace("coproc_pidchk: pid %d has died", pid); -#endif - cp->c_status = status; - cp->c_flags |= COPROC_DEAD; - cp->c_flags &= ~COPROC_RUNNING; -#if MULTIPLE_COPROCS - coproc_dispose (cp); -#else - coproc_unsetvars (cp); -#endif - } -} - -void -coproc_setvars (cp) - struct coproc *cp; -{ - SHELL_VAR *v; - char *namevar, *t; - int l; -#if defined (ARRAY_VARS) - arrayind_t ind; -#endif - - if (cp->c_name == 0) - return; - - l = strlen (cp->c_name); - namevar = xmalloc (l + 16); - -#if defined (ARRAY_VARS) - v = find_variable (cp->c_name); - if (v == 0) - v = make_new_array_variable (cp->c_name); - if (array_p (v) == 0) - v = convert_var_to_array (v); - - t = itos (cp->c_rfd); - ind = 0; - v = bind_array_variable (cp->c_name, ind, t, 0); - free (t); - - t = itos (cp->c_wfd); - ind = 1; - bind_array_variable (cp->c_name, ind, t, 0); - free (t); -#else - sprintf (namevar, "%s_READ", cp->c_name); - t = itos (cp->c_rfd); - bind_variable (namevar, t, 0); - free (t); - sprintf (namevar, "%s_WRITE", cp->c_name); - t = itos (cp->c_wfd); - bind_variable (namevar, t, 0); - free (t); -#endif - - sprintf (namevar, "%s_PID", cp->c_name); - t = itos (cp->c_pid); - bind_variable (namevar, t, 0); - free (t); - - free (namevar); -} - -void -coproc_unsetvars (cp) - struct coproc *cp; -{ - int l; - char *namevar; - - if (cp->c_name == 0) - return; - - l = strlen (cp->c_name); - namevar = xmalloc (l + 16); - - sprintf (namevar, "%s_PID", cp->c_name); - unbind_variable (namevar); - -#if defined (ARRAY_VARS) - unbind_variable (cp->c_name); -#else - sprintf (namevar, "%s_READ", cp->c_name); - unbind_variable (namevar); - sprintf (namevar, "%s_WRITE", cp->c_name); - unbind_variable (namevar); -#endif - - free (namevar); -} - -static int -execute_coproc (command, pipe_in, pipe_out, fds_to_close) - COMMAND *command; - int pipe_in, pipe_out; - struct fd_bitmap *fds_to_close; -{ - int rpipe[2], wpipe[2], estat; - pid_t coproc_pid; - Coproc *cp; - char *tcmd; - - /* XXX -- can be removed after changes to handle multiple coprocs */ -#if !MULTIPLE_COPROCS - if (sh_coproc.c_pid != NO_PID) - internal_warning ("execute_coproc: coproc [%d:%s] still exists", sh_coproc.c_pid, sh_coproc.c_name); - coproc_init (&sh_coproc); -#endif - - command_string_index = 0; - tcmd = make_command_string (command); - - sh_openpipe ((int *)&rpipe); /* 0 = parent read, 1 = child write */ - sh_openpipe ((int *)&wpipe); /* 0 = child read, 1 = parent write */ - - coproc_pid = make_child (savestring (tcmd), 1); - if (coproc_pid == 0) - { - close (rpipe[0]); - close (wpipe[1]); - - estat = execute_in_subshell (command, 1, wpipe[0], rpipe[1], fds_to_close); - - fflush (stdout); - fflush (stderr); - - exit (estat); - } - - close (rpipe[1]); - close (wpipe[0]); - - cp = coproc_alloc (command->value.Coproc->name, coproc_pid); - cp->c_rfd = rpipe[0]; - cp->c_wfd = wpipe[1]; - - SET_CLOSE_ON_EXEC (cp->c_rfd); - SET_CLOSE_ON_EXEC (cp->c_wfd); - - coproc_setvars (cp); - -#if 0 - itrace ("execute_coproc: [%d] %s", coproc_pid, the_printed_command); -#endif - - close_pipes (pipe_in, pipe_out); -#if defined (PROCESS_SUBSTITUTION) && defined (HAVE_DEV_FD) - unlink_fifo_list (); -#endif - stop_pipeline (1, (COMMAND *)NULL); - DESCRIBE_PID (coproc_pid); - run_pending_traps (); - - return (EXECUTION_SUCCESS); -} -#endif - -static void -restore_stdin (s) - int s; -{ - dup2 (s, 0); - close (s); -} - -/* Catch-all cleanup function for lastpipe code for unwind-protects */ -static void -lastpipe_cleanup (s) - int s; -{ - unfreeze_jobs_list (); -} - -static int -execute_pipeline (command, asynchronous, pipe_in, pipe_out, fds_to_close) - COMMAND *command; - int asynchronous, pipe_in, pipe_out; - struct fd_bitmap *fds_to_close; -{ - int prev, fildes[2], new_bitmap_size, dummyfd, ignore_return, exec_result; - int lstdin, lastpipe_flag, lastpipe_jid; - COMMAND *cmd; - struct fd_bitmap *fd_bitmap; - pid_t lastpid; - -#if defined (JOB_CONTROL) - sigset_t set, oset; - BLOCK_CHILD (set, oset); -#endif /* JOB_CONTROL */ - - ignore_return = (command->flags & CMD_IGNORE_RETURN) != 0; - - prev = pipe_in; - cmd = command; - - while (cmd && cmd->type == cm_connection && - cmd->value.Connection && cmd->value.Connection->connector == '|') - { - /* Make a pipeline between the two commands. */ - if (pipe (fildes) < 0) - { - sys_error (_("pipe error")); -#if defined (JOB_CONTROL) - terminate_current_pipeline (); - kill_current_pipeline (); - UNBLOCK_CHILD (oset); -#endif /* JOB_CONTROL */ - last_command_exit_value = EXECUTION_FAILURE; - /* The unwind-protects installed below will take care - of closing all of the open file descriptors. */ - throw_to_top_level (); - return (EXECUTION_FAILURE); /* XXX */ - } - - /* Here is a problem: with the new file close-on-exec - code, the read end of the pipe (fildes[0]) stays open - in the first process, so that process will never get a - SIGPIPE. There is no way to signal the first process - that it should close fildes[0] after forking, so it - remains open. No SIGPIPE is ever sent because there - is still a file descriptor open for reading connected - to the pipe. We take care of that here. This passes - around a bitmap of file descriptors that must be - closed after making a child process in execute_simple_command. */ - - /* We need fd_bitmap to be at least as big as fildes[0]. - If fildes[0] is less than fds_to_close->size, then - use fds_to_close->size. */ - new_bitmap_size = (fildes[0] < fds_to_close->size) - ? fds_to_close->size - : fildes[0] + 8; - - fd_bitmap = new_fd_bitmap (new_bitmap_size); - - /* Now copy the old information into the new bitmap. */ - xbcopy ((char *)fds_to_close->bitmap, (char *)fd_bitmap->bitmap, fds_to_close->size); - - /* And mark the pipe file descriptors to be closed. */ - fd_bitmap->bitmap[fildes[0]] = 1; - - /* In case there are pipe or out-of-processes errors, we - want all these file descriptors to be closed when - unwind-protects are run, and the storage used for the - bitmaps freed up. */ - begin_unwind_frame ("pipe-file-descriptors"); - add_unwind_protect (dispose_fd_bitmap, fd_bitmap); - add_unwind_protect (close_fd_bitmap, fd_bitmap); - if (prev >= 0) - add_unwind_protect (close, prev); - dummyfd = fildes[1]; - add_unwind_protect (close, dummyfd); - -#if defined (JOB_CONTROL) - add_unwind_protect (restore_signal_mask, &oset); -#endif /* JOB_CONTROL */ - - if (ignore_return && cmd->value.Connection->first) - cmd->value.Connection->first->flags |= CMD_IGNORE_RETURN; - execute_command_internal (cmd->value.Connection->first, asynchronous, - prev, fildes[1], fd_bitmap); - - if (prev >= 0) - close (prev); - - prev = fildes[0]; - close (fildes[1]); - - dispose_fd_bitmap (fd_bitmap); - discard_unwind_frame ("pipe-file-descriptors"); - - cmd = cmd->value.Connection->second; - } - - lastpid = last_made_pid; - - /* Now execute the rightmost command in the pipeline. */ - if (ignore_return && cmd) - cmd->flags |= CMD_IGNORE_RETURN; - -#if defined (JOB_CONTROL) - lastpipe_flag = 0; - begin_unwind_frame ("lastpipe-exec"); - lstdin = -1; - /* If the `lastpipe' option is set with shopt, and job control is not - enabled, execute the last element of non-async pipelines in the - current shell environment. */ - if (lastpipe_opt && job_control == 0 && asynchronous == 0 && pipe_out == NO_PIPE && prev > 0) - { - lstdin = move_to_high_fd (0, 0, 255); - if (lstdin > 0) - { - do_piping (prev, pipe_out); - prev = NO_PIPE; - add_unwind_protect (restore_stdin, lstdin); - lastpipe_flag = 1; - freeze_jobs_list (); - lastpipe_jid = stop_pipeline (0, (COMMAND *)NULL); /* XXX */ - add_unwind_protect (lastpipe_cleanup, lastpipe_jid); - } - if (cmd) - cmd->flags |= CMD_LASTPIPE; - } - if (prev >= 0) - add_unwind_protect (close, prev); -#endif - - exec_result = execute_command_internal (cmd, asynchronous, prev, pipe_out, fds_to_close); - -#if defined (JOB_CONTROL) - if (lstdin > 0) - restore_stdin (lstdin); -#endif - - if (prev >= 0) - close (prev); - -#if defined (JOB_CONTROL) - UNBLOCK_CHILD (oset); -#endif - - QUIT; - - if (lastpipe_flag) - { -#if defined (JOB_CONTROL) - append_process (savestring (the_printed_command), dollar_dollar_pid, exec_result, lastpipe_jid); -#endif - lstdin = wait_for (lastpid); -#if defined (JOB_CONTROL) - exec_result = job_exit_status (lastpipe_jid); -#endif - unfreeze_jobs_list (); - } - - discard_unwind_frame ("lastpipe-exec"); - - return (exec_result); -} - -static int -execute_connection (command, asynchronous, pipe_in, pipe_out, fds_to_close) - COMMAND *command; - int asynchronous, pipe_in, pipe_out; - struct fd_bitmap *fds_to_close; -{ - COMMAND *tc, *second; - int ignore_return, exec_result, was_error_trap, invert; - volatile int save_line_number; - - ignore_return = (command->flags & CMD_IGNORE_RETURN) != 0; - - switch (command->value.Connection->connector) - { - /* Do the first command asynchronously. */ - case '&': - tc = command->value.Connection->first; - if (tc == 0) - return (EXECUTION_SUCCESS); - - if (ignore_return) - tc->flags |= CMD_IGNORE_RETURN; - tc->flags |= CMD_AMPERSAND; - - /* If this shell was compiled without job control support, - if we are currently in a subshell via `( xxx )', or if job - control is not active then the standard input for an - asynchronous command is forced to /dev/null. */ -#if defined (JOB_CONTROL) - if ((subshell_environment || !job_control) && !stdin_redir) -#else - if (!stdin_redir) -#endif /* JOB_CONTROL */ - tc->flags |= CMD_STDIN_REDIR; - - exec_result = execute_command_internal (tc, 1, pipe_in, pipe_out, fds_to_close); - QUIT; - - if (tc->flags & CMD_STDIN_REDIR) - tc->flags &= ~CMD_STDIN_REDIR; - - second = command->value.Connection->second; - if (second) - { - if (ignore_return) - second->flags |= CMD_IGNORE_RETURN; - - exec_result = execute_command_internal (second, asynchronous, pipe_in, pipe_out, fds_to_close); - } - - break; - - /* Just call execute command on both sides. */ - case ';': - if (ignore_return) - { - if (command->value.Connection->first) - command->value.Connection->first->flags |= CMD_IGNORE_RETURN; - if (command->value.Connection->second) - command->value.Connection->second->flags |= CMD_IGNORE_RETURN; - } - executing_list++; - QUIT; - execute_command (command->value.Connection->first); - QUIT; - exec_result = execute_command_internal (command->value.Connection->second, - asynchronous, pipe_in, pipe_out, - fds_to_close); - executing_list--; - break; - - case '|': - was_error_trap = signal_is_trapped (ERROR_TRAP) && signal_is_ignored (ERROR_TRAP) == 0; - invert = (command->flags & CMD_INVERT_RETURN) != 0; - ignore_return = (command->flags & CMD_IGNORE_RETURN) != 0; - - line_number_for_err_trap = line_number; - exec_result = execute_pipeline (command, asynchronous, pipe_in, pipe_out, fds_to_close); - - if (was_error_trap && ignore_return == 0 && invert == 0 && exec_result != EXECUTION_SUCCESS) - { - last_command_exit_value = exec_result; - save_line_number = line_number; - line_number = line_number_for_err_trap; - run_error_trap (); - line_number = save_line_number; - } - - if (ignore_return == 0 && invert == 0 && exit_immediately_on_error && exec_result != EXECUTION_SUCCESS) - { - last_command_exit_value = exec_result; - run_pending_traps (); - jump_to_top_level (ERREXIT); - } - - break; - - case AND_AND: - case OR_OR: - if (asynchronous) - { - /* If we have something like `a && b &' or `a || b &', run the - && or || stuff in a subshell. Force a subshell and just call - execute_command_internal again. Leave asynchronous on - so that we get a report from the parent shell about the - background job. */ - command->flags |= CMD_FORCE_SUBSHELL; - exec_result = execute_command_internal (command, 1, pipe_in, pipe_out, fds_to_close); - break; - } - - /* Execute the first command. If the result of that is successful - and the connector is AND_AND, or the result is not successful - and the connector is OR_OR, then execute the second command, - otherwise return. */ - - executing_list++; - if (command->value.Connection->first) - command->value.Connection->first->flags |= CMD_IGNORE_RETURN; - - exec_result = execute_command (command->value.Connection->first); - QUIT; - if (((command->value.Connection->connector == AND_AND) && - (exec_result == EXECUTION_SUCCESS)) || - ((command->value.Connection->connector == OR_OR) && - (exec_result != EXECUTION_SUCCESS))) - { - if (ignore_return && command->value.Connection->second) - command->value.Connection->second->flags |= CMD_IGNORE_RETURN; - - exec_result = execute_command (command->value.Connection->second); - } - executing_list--; - break; - - default: - command_error ("execute_connection", CMDERR_BADCONN, command->value.Connection->connector, 0); - jump_to_top_level (DISCARD); - exec_result = EXECUTION_FAILURE; - } - - return exec_result; -} - -#define REAP() \ - do \ - { \ - if (!interactive_shell) \ - reap_dead_jobs (); \ - } \ - while (0) - -/* Execute a FOR command. The syntax is: FOR word_desc IN word_list; - DO command; DONE */ -static int -execute_for_command (for_command) - FOR_COM *for_command; -{ - register WORD_LIST *releaser, *list; - SHELL_VAR *v; - char *identifier; - int retval, save_line_number; -#if 0 - SHELL_VAR *old_value = (SHELL_VAR *)NULL; /* Remember the old value of x. */ -#endif - - save_line_number = line_number; - if (check_identifier (for_command->name, 1) == 0) - { - if (posixly_correct && interactive_shell == 0) - { - last_command_exit_value = EX_BADUSAGE; - jump_to_top_level (ERREXIT); - } - return (EXECUTION_FAILURE); - } - - loop_level++; - identifier = for_command->name->word; - - list = releaser = expand_words_no_vars (for_command->map_list); - - begin_unwind_frame ("for"); - add_unwind_protect (dispose_words, releaser); - -#if 0 - if (lexical_scoping) - { - old_value = copy_variable (find_variable (identifier)); - if (old_value) - add_unwind_protect (dispose_variable, old_value); - } -#endif - - if (for_command->flags & CMD_IGNORE_RETURN) - for_command->action->flags |= CMD_IGNORE_RETURN; - - for (retval = EXECUTION_SUCCESS; list; list = list->next) - { - QUIT; - - line_number = for_command->line; - - /* Remember what this command looks like, for debugger. */ - command_string_index = 0; - print_for_command_head (for_command); - - if (echo_command_at_execute) - xtrace_print_for_command_head (for_command); - - /* Save this command unless it's a trap command and we're not running - a debug trap. */ -#if 0 - if (signal_in_progress (DEBUG_TRAP) == 0 && (this_command_name == 0 || (STREQ (this_command_name, "trap") == 0))) -#else - if (signal_in_progress (DEBUG_TRAP) == 0 && running_trap == 0) -#endif - { - FREE (the_printed_command_except_trap); - the_printed_command_except_trap = savestring (the_printed_command); - } - - retval = run_debug_trap (); -#if defined (DEBUGGER) - /* In debugging mode, if the DEBUG trap returns a non-zero status, we - skip the command. */ - if (debugging_mode && retval != EXECUTION_SUCCESS) - continue; -#endif - - this_command_name = (char *)NULL; - v = bind_variable (identifier, list->word->word, 0); - if (readonly_p (v) || noassign_p (v)) - { - line_number = save_line_number; - if (readonly_p (v) && interactive_shell == 0 && posixly_correct) - { - last_command_exit_value = EXECUTION_FAILURE; - jump_to_top_level (FORCE_EOF); - } - else - { - dispose_words (releaser); - discard_unwind_frame ("for"); - loop_level--; - return (EXECUTION_FAILURE); - } - } - retval = execute_command (for_command->action); - REAP (); - QUIT; - - if (breaking) - { - breaking--; - break; - } - - if (continuing) - { - continuing--; - if (continuing) - break; - } - } - - loop_level--; - line_number = save_line_number; - -#if 0 - if (lexical_scoping) - { - if (!old_value) - unbind_variable (identifier); - else - { - SHELL_VAR *new_value; - - new_value = bind_variable (identifier, value_cell(old_value), 0); - new_value->attributes = old_value->attributes; - dispose_variable (old_value); - } - } -#endif - - dispose_words (releaser); - discard_unwind_frame ("for"); - return (retval); -} - -#if defined (ARITH_FOR_COMMAND) -/* Execute an arithmetic for command. The syntax is - - for (( init ; step ; test )) - do - body - done - - The execution should be exactly equivalent to - - eval \(\( init \)\) - while eval \(\( test \)\) ; do - body; - eval \(\( step \)\) - done -*/ -static intmax_t -eval_arith_for_expr (l, okp) - WORD_LIST *l; - int *okp; -{ - WORD_LIST *new; - intmax_t expresult; - int r; - - new = expand_words_no_vars (l); - if (new) - { - if (echo_command_at_execute) - xtrace_print_arith_cmd (new); - this_command_name = "(("; /* )) for expression error messages */ - - command_string_index = 0; - print_arith_command (new); - if (signal_in_progress (DEBUG_TRAP) == 0) - { - FREE (the_printed_command_except_trap); - the_printed_command_except_trap = savestring (the_printed_command); - } - - r = run_debug_trap (); - /* In debugging mode, if the DEBUG trap returns a non-zero status, we - skip the command. */ -#if defined (DEBUGGER) - if (debugging_mode == 0 || r == EXECUTION_SUCCESS) - expresult = evalexp (new->word->word, okp); - else - { - expresult = 0; - if (okp) - *okp = 1; - } -#else - expresult = evalexp (new->word->word, okp); -#endif - dispose_words (new); - } - else - { - expresult = 0; - if (okp) - *okp = 1; - } - return (expresult); -} - -static int -execute_arith_for_command (arith_for_command) - ARITH_FOR_COM *arith_for_command; -{ - intmax_t expresult; - int expok, body_status, arith_lineno, save_lineno; - - body_status = EXECUTION_SUCCESS; - loop_level++; - save_lineno = line_number; - - if (arith_for_command->flags & CMD_IGNORE_RETURN) - arith_for_command->action->flags |= CMD_IGNORE_RETURN; - - this_command_name = "(("; /* )) for expression error messages */ - - /* save the starting line number of the command so we can reset - line_number before executing each expression -- for $LINENO - and the DEBUG trap. */ - line_number = arith_lineno = arith_for_command->line; - if (variable_context && interactive_shell) - line_number -= function_line_number; - - /* Evaluate the initialization expression. */ - expresult = eval_arith_for_expr (arith_for_command->init, &expok); - if (expok == 0) - { - line_number = save_lineno; - return (EXECUTION_FAILURE); - } - - while (1) - { - /* Evaluate the test expression. */ - line_number = arith_lineno; - expresult = eval_arith_for_expr (arith_for_command->test, &expok); - line_number = save_lineno; - - if (expok == 0) - { - body_status = EXECUTION_FAILURE; - break; - } - REAP (); - if (expresult == 0) - break; - - /* Execute the body of the arithmetic for command. */ - QUIT; - body_status = execute_command (arith_for_command->action); - QUIT; - - /* Handle any `break' or `continue' commands executed by the body. */ - if (breaking) - { - breaking--; - break; - } - - if (continuing) - { - continuing--; - if (continuing) - break; - } - - /* Evaluate the step expression. */ - line_number = arith_lineno; - expresult = eval_arith_for_expr (arith_for_command->step, &expok); - line_number = save_lineno; - - if (expok == 0) - { - body_status = EXECUTION_FAILURE; - break; - } - } - - loop_level--; - line_number = save_lineno; - - return (body_status); -} -#endif - -#if defined (SELECT_COMMAND) -static int LINES, COLS, tabsize; - -#define RP_SPACE ") " -#define RP_SPACE_LEN 2 - -/* XXX - does not handle numbers > 1000000 at all. */ -#define NUMBER_LEN(s) \ -((s < 10) ? 1 \ - : ((s < 100) ? 2 \ - : ((s < 1000) ? 3 \ - : ((s < 10000) ? 4 \ - : ((s < 100000) ? 5 \ - : 6))))) - -static int -displen (s) - const char *s; -{ -#if defined (HANDLE_MULTIBYTE) - wchar_t *wcstr; - size_t wclen, slen; - - wcstr = 0; - slen = mbstowcs (wcstr, s, 0); - if (slen == -1) - slen = 0; - wcstr = (wchar_t *)xmalloc (sizeof (wchar_t) * (slen + 1)); - mbstowcs (wcstr, s, slen + 1); - wclen = wcswidth (wcstr, slen); - free (wcstr); - return ((int)wclen); -#else - return (STRLEN (s)); -#endif -} - -static int -print_index_and_element (len, ind, list) - int len, ind; - WORD_LIST *list; -{ - register WORD_LIST *l; - register int i; - - if (list == 0) - return (0); - for (i = ind, l = list; l && --i; l = l->next) - ; - if (l == 0) /* don't think this can happen */ - return (0); - fprintf (stderr, "%*d%s%s", len, ind, RP_SPACE, l->word->word); - return (displen (l->word->word)); -} - -static void -indent (from, to) - int from, to; -{ - while (from < to) - { - if ((to / tabsize) > (from / tabsize)) - { - putc ('\t', stderr); - from += tabsize - from % tabsize; - } - else - { - putc (' ', stderr); - from++; - } - } -} - -static void -print_select_list (list, list_len, max_elem_len, indices_len) - WORD_LIST *list; - int list_len, max_elem_len, indices_len; -{ - int ind, row, elem_len, pos, cols, rows; - int first_column_indices_len, other_indices_len; - - if (list == 0) - { - putc ('\n', stderr); - return; - } - - cols = max_elem_len ? COLS / max_elem_len : 1; - if (cols == 0) - cols = 1; - rows = list_len ? list_len / cols + (list_len % cols != 0) : 1; - cols = list_len ? list_len / rows + (list_len % rows != 0) : 1; - - if (rows == 1) - { - rows = cols; - cols = 1; - } - - first_column_indices_len = NUMBER_LEN (rows); - other_indices_len = indices_len; - - for (row = 0; row < rows; row++) - { - ind = row; - pos = 0; - while (1) - { - indices_len = (pos == 0) ? first_column_indices_len : other_indices_len; - elem_len = print_index_and_element (indices_len, ind + 1, list); - elem_len += indices_len + RP_SPACE_LEN; - ind += rows; - if (ind >= list_len) - break; - indent (pos + elem_len, pos + max_elem_len); - pos += max_elem_len; - } - putc ('\n', stderr); - } -} - -/* Print the elements of LIST, one per line, preceded by an index from 1 to - LIST_LEN. Then display PROMPT and wait for the user to enter a number. - If the number is between 1 and LIST_LEN, return that selection. If EOF - is read, return a null string. If a blank line is entered, or an invalid - number is entered, the loop is executed again. */ -static char * -select_query (list, list_len, prompt, print_menu) - WORD_LIST *list; - int list_len; - char *prompt; - int print_menu; -{ - int max_elem_len, indices_len, len; - intmax_t reply; - WORD_LIST *l; - char *repl_string, *t; - -#if 0 - t = get_string_value ("LINES"); - LINES = (t && *t) ? atoi (t) : 24; -#endif - t = get_string_value ("COLUMNS"); - COLS = (t && *t) ? atoi (t) : 80; - -#if 0 - t = get_string_value ("TABSIZE"); - tabsize = (t && *t) ? atoi (t) : 8; - if (tabsize <= 0) - tabsize = 8; -#else - tabsize = 8; -#endif - - max_elem_len = 0; - for (l = list; l; l = l->next) - { - len = displen (l->word->word); - if (len > max_elem_len) - max_elem_len = len; - } - indices_len = NUMBER_LEN (list_len); - max_elem_len += indices_len + RP_SPACE_LEN + 2; - - while (1) - { - if (print_menu) - print_select_list (list, list_len, max_elem_len, indices_len); - fprintf (stderr, "%s", prompt); - fflush (stderr); - QUIT; - - if (read_builtin ((WORD_LIST *)NULL) != EXECUTION_SUCCESS) - { - putchar ('\n'); - return ((char *)NULL); - } - repl_string = get_string_value ("REPLY"); - if (*repl_string == 0) - { - print_menu = 1; - continue; - } - if (legal_number (repl_string, &reply) == 0) - return ""; - if (reply < 1 || reply > list_len) - return ""; - - for (l = list; l && --reply; l = l->next) - ; - return (l->word->word); /* XXX - can't be null? */ - } -} - -/* Execute a SELECT command. The syntax is: - SELECT word IN list DO command_list DONE - Only `break' or `return' in command_list will terminate - the command. */ -static int -execute_select_command (select_command) - SELECT_COM *select_command; -{ - WORD_LIST *releaser, *list; - SHELL_VAR *v; - char *identifier, *ps3_prompt, *selection; - int retval, list_len, show_menu, save_line_number; - - if (check_identifier (select_command->name, 1) == 0) - return (EXECUTION_FAILURE); - - save_line_number = line_number; - line_number = select_command->line; - - command_string_index = 0; - print_select_command_head (select_command); - - if (echo_command_at_execute) - xtrace_print_select_command_head (select_command); - -#if 0 - if (signal_in_progress (DEBUG_TRAP) == 0 && (this_command_name == 0 || (STREQ (this_command_name, "trap") == 0))) -#else - if (signal_in_progress (DEBUG_TRAP) == 0 && running_trap == 0) -#endif - { - FREE (the_printed_command_except_trap); - the_printed_command_except_trap = savestring (the_printed_command); - } - - retval = run_debug_trap (); -#if defined (DEBUGGER) - /* In debugging mode, if the DEBUG trap returns a non-zero status, we - skip the command. */ - if (debugging_mode && retval != EXECUTION_SUCCESS) - return (EXECUTION_SUCCESS); -#endif - - loop_level++; - identifier = select_command->name->word; - - /* command and arithmetic substitution, parameter and variable expansion, - word splitting, pathname expansion, and quote removal. */ - list = releaser = expand_words_no_vars (select_command->map_list); - list_len = list_length (list); - if (list == 0 || list_len == 0) - { - if (list) - dispose_words (list); - line_number = save_line_number; - return (EXECUTION_SUCCESS); - } - - begin_unwind_frame ("select"); - add_unwind_protect (dispose_words, releaser); - - if (select_command->flags & CMD_IGNORE_RETURN) - select_command->action->flags |= CMD_IGNORE_RETURN; - - retval = EXECUTION_SUCCESS; - show_menu = 1; - - while (1) - { - line_number = select_command->line; - ps3_prompt = get_string_value ("PS3"); - if (ps3_prompt == 0) - ps3_prompt = "#? "; - - QUIT; - selection = select_query (list, list_len, ps3_prompt, show_menu); - QUIT; - if (selection == 0) - { - /* select_query returns EXECUTION_FAILURE if the read builtin - fails, so we want to return failure in this case. */ - retval = EXECUTION_FAILURE; - break; - } - - v = bind_variable (identifier, selection, 0); - if (readonly_p (v) || noassign_p (v)) - { - if (readonly_p (v) && interactive_shell == 0 && posixly_correct) - { - last_command_exit_value = EXECUTION_FAILURE; - jump_to_top_level (FORCE_EOF); - } - else - { - dispose_words (releaser); - discard_unwind_frame ("select"); - loop_level--; - line_number = save_line_number; - return (EXECUTION_FAILURE); - } - } - - retval = execute_command (select_command->action); - - REAP (); - QUIT; - - if (breaking) - { - breaking--; - break; - } - - if (continuing) - { - continuing--; - if (continuing) - break; - } - -#if defined (KSH_COMPATIBLE_SELECT) - show_menu = 0; - selection = get_string_value ("REPLY"); - if (selection && *selection == '\0') - show_menu = 1; -#endif - } - - loop_level--; - line_number = save_line_number; - - dispose_words (releaser); - discard_unwind_frame ("select"); - return (retval); -} -#endif /* SELECT_COMMAND */ - -/* Execute a CASE command. The syntax is: CASE word_desc IN pattern_list ESAC. - The pattern_list is a linked list of pattern clauses; each clause contains - some patterns to compare word_desc against, and an associated command to - execute. */ -static int -execute_case_command (case_command) - CASE_COM *case_command; -{ - register WORD_LIST *list; - WORD_LIST *wlist, *es; - PATTERN_LIST *clauses; - char *word, *pattern; - int retval, match, ignore_return, save_line_number; - - save_line_number = line_number; - line_number = case_command->line; - - command_string_index = 0; - print_case_command_head (case_command); - - if (echo_command_at_execute) - xtrace_print_case_command_head (case_command); - -#if 0 - if (signal_in_progress (DEBUG_TRAP) == 0 && (this_command_name == 0 || (STREQ (this_command_name, "trap") == 0))) -#else - if (signal_in_progress (DEBUG_TRAP) == 0 && running_trap == 0) -#endif - { - FREE (the_printed_command_except_trap); - the_printed_command_except_trap = savestring (the_printed_command); - } - - retval = run_debug_trap(); -#if defined (DEBUGGER) - /* In debugging mode, if the DEBUG trap returns a non-zero status, we - skip the command. */ - if (debugging_mode && retval != EXECUTION_SUCCESS) - { - line_number = save_line_number; - return (EXECUTION_SUCCESS); - } -#endif - - wlist = expand_word_unsplit (case_command->word, 0); - word = wlist ? string_list (wlist) : savestring (""); - dispose_words (wlist); - - retval = EXECUTION_SUCCESS; - ignore_return = case_command->flags & CMD_IGNORE_RETURN; - - begin_unwind_frame ("case"); - add_unwind_protect ((Function *)xfree, word); - -#define EXIT_CASE() goto exit_case_command - - for (clauses = case_command->clauses; clauses; clauses = clauses->next) - { - QUIT; - for (list = clauses->patterns; list; list = list->next) - { - es = expand_word_leave_quoted (list->word, 0); - - if (es && es->word && es->word->word && *(es->word->word)) - pattern = quote_string_for_globbing (es->word->word, QGLOB_CVTNULL); - else - { - pattern = (char *)xmalloc (1); - pattern[0] = '\0'; - } - - /* Since the pattern does not undergo quote removal (as per - Posix.2, section 3.9.4.3), the strmatch () call must be able - to recognize backslashes as escape characters. */ - match = strmatch (pattern, word, FNMATCH_EXTFLAG|FNMATCH_IGNCASE) != FNM_NOMATCH; - free (pattern); - - dispose_words (es); - - if (match) - { - do - { - if (clauses->action && ignore_return) - clauses->action->flags |= CMD_IGNORE_RETURN; - retval = execute_command (clauses->action); - } - while ((clauses->flags & CASEPAT_FALLTHROUGH) && (clauses = clauses->next)); - if (clauses == 0 || (clauses->flags & CASEPAT_TESTNEXT) == 0) - EXIT_CASE (); - else - break; - } - - QUIT; - } - } - -exit_case_command: - free (word); - discard_unwind_frame ("case"); - line_number = save_line_number; - return (retval); -} - -#define CMD_WHILE 0 -#define CMD_UNTIL 1 - -/* The WHILE command. Syntax: WHILE test DO action; DONE. - Repeatedly execute action while executing test produces - EXECUTION_SUCCESS. */ -static int -execute_while_command (while_command) - WHILE_COM *while_command; -{ - return (execute_while_or_until (while_command, CMD_WHILE)); -} - -/* UNTIL is just like WHILE except that the test result is negated. */ -static int -execute_until_command (while_command) - WHILE_COM *while_command; -{ - return (execute_while_or_until (while_command, CMD_UNTIL)); -} - -/* The body for both while and until. The only difference between the - two is that the test value is treated differently. TYPE is - CMD_WHILE or CMD_UNTIL. The return value for both commands should - be EXECUTION_SUCCESS if no commands in the body are executed, and - the status of the last command executed in the body otherwise. */ -static int -execute_while_or_until (while_command, type) - WHILE_COM *while_command; - int type; -{ - int return_value, body_status; - - body_status = EXECUTION_SUCCESS; - loop_level++; - - while_command->test->flags |= CMD_IGNORE_RETURN; - if (while_command->flags & CMD_IGNORE_RETURN) - while_command->action->flags |= CMD_IGNORE_RETURN; - - while (1) - { - return_value = execute_command (while_command->test); - REAP (); - - /* Need to handle `break' in the test when we would break out of the - loop. The job control code will set `breaking' to loop_level - when a job in a loop is stopped with SIGTSTP. If the stopped job - is in the loop test, `breaking' will not be reset unless we do - this, and the shell will cease to execute commands. */ - if (type == CMD_WHILE && return_value != EXECUTION_SUCCESS) - { - if (breaking) - breaking--; - break; - } - if (type == CMD_UNTIL && return_value == EXECUTION_SUCCESS) - { - if (breaking) - breaking--; - break; - } - - QUIT; - body_status = execute_command (while_command->action); - QUIT; - - if (breaking) - { - breaking--; - break; - } - - if (continuing) - { - continuing--; - if (continuing) - break; - } - } - loop_level--; - - return (body_status); -} - -/* IF test THEN command [ELSE command]. - IF also allows ELIF in the place of ELSE IF, but - the parser makes *that* stupidity transparent. */ -static int -execute_if_command (if_command) - IF_COM *if_command; -{ - int return_value, save_line_number; - - save_line_number = line_number; - if_command->test->flags |= CMD_IGNORE_RETURN; - return_value = execute_command (if_command->test); - line_number = save_line_number; - - if (return_value == EXECUTION_SUCCESS) - { - QUIT; - - if (if_command->true_case && (if_command->flags & CMD_IGNORE_RETURN)) - if_command->true_case->flags |= CMD_IGNORE_RETURN; - - return (execute_command (if_command->true_case)); - } - else - { - QUIT; - - if (if_command->false_case && (if_command->flags & CMD_IGNORE_RETURN)) - if_command->false_case->flags |= CMD_IGNORE_RETURN; - - return (execute_command (if_command->false_case)); - } -} - -#if defined (DPAREN_ARITHMETIC) -static int -execute_arith_command (arith_command) - ARITH_COM *arith_command; -{ - int expok, save_line_number, retval; - intmax_t expresult; - WORD_LIST *new; - char *exp; - - expresult = 0; - - save_line_number = line_number; - this_command_name = "(("; /* )) */ - line_number = arith_command->line; - /* If we're in a function, update the line number information. */ - if (variable_context && interactive_shell) - line_number -= function_line_number; - - command_string_index = 0; - print_arith_command (arith_command->exp); - - if (signal_in_progress (DEBUG_TRAP) == 0) - { - FREE (the_printed_command_except_trap); - the_printed_command_except_trap = savestring (the_printed_command); - } - - /* Run the debug trap before each arithmetic command, but do it after we - update the line number information and before we expand the various - words in the expression. */ - retval = run_debug_trap (); -#if defined (DEBUGGER) - /* In debugging mode, if the DEBUG trap returns a non-zero status, we - skip the command. */ - if (debugging_mode && retval != EXECUTION_SUCCESS) - { - line_number = save_line_number; - return (EXECUTION_SUCCESS); - } -#endif - - new = expand_words_no_vars (arith_command->exp); - - /* If we're tracing, make a new word list with `((' at the front and `))' - at the back and print it. */ - if (echo_command_at_execute) - xtrace_print_arith_cmd (new); - - if (new) - { - exp = new->next ? string_list (new) : new->word->word; - expresult = evalexp (exp, &expok); - line_number = save_line_number; - if (exp != new->word->word) - free (exp); - dispose_words (new); - } - else - { - expresult = 0; - expok = 1; - } - - if (expok == 0) - return (EXECUTION_FAILURE); - - return (expresult == 0 ? EXECUTION_FAILURE : EXECUTION_SUCCESS); -} -#endif /* DPAREN_ARITHMETIC */ - -#if defined (COND_COMMAND) - -static char * const nullstr = ""; - -/* XXX - can COND ever be NULL when this is called? */ -static int -execute_cond_node (cond) - COND_COM *cond; -{ - int result, invert, patmatch, rmatch, mflags, ignore; - char *arg1, *arg2; - - invert = (cond->flags & CMD_INVERT_RETURN); - ignore = (cond->flags & CMD_IGNORE_RETURN); - if (ignore) - { - if (cond->left) - cond->left->flags |= CMD_IGNORE_RETURN; - if (cond->right) - cond->right->flags |= CMD_IGNORE_RETURN; - } - - if (cond->type == COND_EXPR) - result = execute_cond_node (cond->left); - else if (cond->type == COND_OR) - { - result = execute_cond_node (cond->left); - if (result != EXECUTION_SUCCESS) - result = execute_cond_node (cond->right); - } - else if (cond->type == COND_AND) - { - result = execute_cond_node (cond->left); - if (result == EXECUTION_SUCCESS) - result = execute_cond_node (cond->right); - } - else if (cond->type == COND_UNARY) - { - if (ignore) - comsub_ignore_return++; - arg1 = cond_expand_word (cond->left->op, 0); - if (ignore) - comsub_ignore_return--; - if (arg1 == 0) - arg1 = nullstr; - if (echo_command_at_execute) - xtrace_print_cond_term (cond->type, invert, cond->op, arg1, (char *)NULL); - result = unary_test (cond->op->word, arg1) ? EXECUTION_SUCCESS : EXECUTION_FAILURE; - if (arg1 != nullstr) - free (arg1); - } - else if (cond->type == COND_BINARY) - { - rmatch = 0; - patmatch = (((cond->op->word[1] == '=') && (cond->op->word[2] == '\0') && - (cond->op->word[0] == '!' || cond->op->word[0] == '=')) || - (cond->op->word[0] == '=' && cond->op->word[1] == '\0')); -#if defined (COND_REGEXP) - rmatch = (cond->op->word[0] == '=' && cond->op->word[1] == '~' && - cond->op->word[2] == '\0'); -#endif - - if (ignore) - comsub_ignore_return++; - arg1 = cond_expand_word (cond->left->op, 0); - if (ignore) - comsub_ignore_return--; - if (arg1 == 0) - arg1 = nullstr; - if (ignore) - comsub_ignore_return++; - arg2 = cond_expand_word (cond->right->op, - (rmatch && shell_compatibility_level > 31) ? 2 : (patmatch ? 1 : 0)); - if (ignore) - comsub_ignore_return--; - if (arg2 == 0) - arg2 = nullstr; - - if (echo_command_at_execute) - xtrace_print_cond_term (cond->type, invert, cond->op, arg1, arg2); - -#if defined (COND_REGEXP) - if (rmatch) - { - mflags = SHMAT_PWARN; -#if defined (ARRAY_VARS) - mflags |= SHMAT_SUBEXP; -#endif - - result = sh_regmatch (arg1, arg2, mflags); - } - else -#endif /* COND_REGEXP */ - { - int oe; - oe = extended_glob; - extended_glob = 1; - result = binary_test (cond->op->word, arg1, arg2, TEST_PATMATCH|TEST_ARITHEXP|TEST_LOCALE) - ? EXECUTION_SUCCESS - : EXECUTION_FAILURE; - extended_glob = oe; - } - if (arg1 != nullstr) - free (arg1); - if (arg2 != nullstr) - free (arg2); - } - else - { - command_error ("execute_cond_node", CMDERR_BADTYPE, cond->type, 0); - jump_to_top_level (DISCARD); - result = EXECUTION_FAILURE; - } - - if (invert) - result = (result == EXECUTION_SUCCESS) ? EXECUTION_FAILURE : EXECUTION_SUCCESS; - - return result; -} - -static int -execute_cond_command (cond_command) - COND_COM *cond_command; -{ - int retval, save_line_number; - - retval = EXECUTION_SUCCESS; - save_line_number = line_number; - - this_command_name = "[["; - line_number = cond_command->line; - /* If we're in a function, update the line number information. */ - if (variable_context && interactive_shell) - line_number -= function_line_number; - command_string_index = 0; - print_cond_command (cond_command); - - if (signal_in_progress (DEBUG_TRAP) == 0) - { - FREE (the_printed_command_except_trap); - the_printed_command_except_trap = savestring (the_printed_command); - } - - /* Run the debug trap before each conditional command, but do it after we - update the line number information. */ - retval = run_debug_trap (); -#if defined (DEBUGGER) - /* In debugging mode, if the DEBUG trap returns a non-zero status, we - skip the command. */ - if (debugging_mode && retval != EXECUTION_SUCCESS) - { - line_number = save_line_number; - return (EXECUTION_SUCCESS); - } -#endif - -#if 0 - debug_print_cond_command (cond_command); -#endif - - last_command_exit_value = retval = execute_cond_node (cond_command); - line_number = save_line_number; - return (retval); -} -#endif /* COND_COMMAND */ - -static void -bind_lastarg (arg) - char *arg; -{ - SHELL_VAR *var; - - if (arg == 0) - arg = ""; - var = bind_variable ("_", arg, 0); - VUNSETATTR (var, att_exported); -} - -/* Execute a null command. Fork a subshell if the command uses pipes or is - to be run asynchronously. This handles all the side effects that are - supposed to take place. */ -static int -execute_null_command (redirects, pipe_in, pipe_out, async) - REDIRECT *redirects; - int pipe_in, pipe_out, async; -{ - int r; - int forcefork; - REDIRECT *rd; - - for (forcefork = 0, rd = redirects; rd; rd = rd->next) - forcefork += rd->rflags & REDIR_VARASSIGN; - - if (forcefork || pipe_in != NO_PIPE || pipe_out != NO_PIPE || async) - { - /* We have a null command, but we really want a subshell to take - care of it. Just fork, do piping and redirections, and exit. */ - if (make_child ((char *)NULL, async) == 0) - { - /* Cancel traps, in trap.c. */ - restore_original_signals (); /* XXX */ - - do_piping (pipe_in, pipe_out); - -#if defined (COPROCESS_SUPPORT) - coproc_closeall (); -#endif - - subshell_environment = 0; - if (async) - subshell_environment |= SUBSHELL_ASYNC; - if (pipe_in != NO_PIPE || pipe_out != NO_PIPE) - subshell_environment |= SUBSHELL_PIPE; - - if (do_redirections (redirects, RX_ACTIVE) == 0) - exit (EXECUTION_SUCCESS); - else - exit (EXECUTION_FAILURE); - } - else - { - close_pipes (pipe_in, pipe_out); -#if defined (PROCESS_SUBSTITUTION) && defined (HAVE_DEV_FD) - unlink_fifo_list (); -#endif - return (EXECUTION_SUCCESS); - } - } - else - { - /* Even if there aren't any command names, pretend to do the - redirections that are specified. The user expects the side - effects to take place. If the redirections fail, then return - failure. Otherwise, if a command substitution took place while - expanding the command or a redirection, return the value of that - substitution. Otherwise, return EXECUTION_SUCCESS. */ - - r = do_redirections (redirects, RX_ACTIVE|RX_UNDOABLE); - cleanup_redirects (redirection_undo_list); - redirection_undo_list = (REDIRECT *)NULL; - - if (r != 0) - return (EXECUTION_FAILURE); - else if (last_command_subst_pid != NO_PID) - return (last_command_exit_value); - else - return (EXECUTION_SUCCESS); - } -} - -/* This is a hack to suppress word splitting for assignment statements - given as arguments to builtins with the ASSIGNMENT_BUILTIN flag set. */ -static void -fix_assignment_words (words) - WORD_LIST *words; -{ - WORD_LIST *w, *wcmd; - struct builtin *b; - int assoc; - - if (words == 0) - return; - - b = 0; - assoc = 0; - - wcmd = words; - for (w = words; w; w = w->next) - if (w->word->flags & W_ASSIGNMENT) - { - if (b == 0) - { - /* Posix (post-2008) says that `command' doesn't change whether - or not the builtin it shadows is a `declaration command', even - though it removes other special builtin properties. In Posix - mode, we skip over one or more instances of `command' and - deal with the next word as the assignment builtin. */ - while (posixly_correct && wcmd && wcmd->word && wcmd->word->word && STREQ (wcmd->word->word, "command")) - wcmd = wcmd->next; - b = builtin_address_internal (wcmd->word->word, 0); - if (b == 0 || (b->flags & ASSIGNMENT_BUILTIN) == 0) - return; - else if (b && (b->flags & ASSIGNMENT_BUILTIN)) - wcmd->word->flags |= W_ASSNBLTIN; - } - w->word->flags |= (W_NOSPLIT|W_NOGLOB|W_TILDEEXP|W_ASSIGNARG); -#if defined (ARRAY_VARS) - if (assoc) - w->word->flags |= W_ASSIGNASSOC; -#endif - } -#if defined (ARRAY_VARS) - /* Note that we saw an associative array option to a builtin that takes - assignment statements. This is a bit of a kludge. */ - else if (w->word->word[0] == '-' && strchr (w->word->word, 'A')) - { - if (b == 0) - { - while (posixly_correct && wcmd && wcmd->word && wcmd->word->word && STREQ (wcmd->word->word, "command")) - wcmd = wcmd->next; - b = builtin_address_internal (wcmd->word->word, 0); - if (b == 0 || (b->flags & ASSIGNMENT_BUILTIN) == 0) - return; - else if (b && (b->flags & ASSIGNMENT_BUILTIN)) - wcmd->word->flags |= W_ASSNBLTIN; - } - if (wcmd->word->flags & W_ASSNBLTIN) - assoc = 1; - } -#endif -} - -/* Return 1 if the file found by searching $PATH for PATHNAME, defaulting - to PATHNAME, is a directory. Used by the autocd code below. */ -static int -is_dirname (pathname) - char *pathname; -{ - char *temp; - int ret; - - temp = search_for_command (pathname, 0); - ret = (temp ? file_isdir (temp) : file_isdir (pathname)); - free (temp); - return ret; -} - -/* The meaty part of all the executions. We have to start hacking the - real execution of commands here. Fork a process, set things up, - execute the command. */ -static int -execute_simple_command (simple_command, pipe_in, pipe_out, async, fds_to_close) - SIMPLE_COM *simple_command; - int pipe_in, pipe_out, async; - struct fd_bitmap *fds_to_close; -{ - WORD_LIST *words, *lastword; - char *command_line, *lastarg, *temp; - int first_word_quoted, result, builtin_is_special, already_forked, dofork; - pid_t old_last_async_pid; - sh_builtin_func_t *builtin; - SHELL_VAR *func; - volatile int old_builtin, old_command_builtin; - - result = EXECUTION_SUCCESS; - special_builtin_failed = builtin_is_special = 0; - command_line = (char *)0; - - QUIT; - - /* If we're in a function, update the line number information. */ - if (variable_context && interactive_shell && sourcelevel == 0) - line_number -= function_line_number; - - /* Remember what this command line looks like at invocation. */ - command_string_index = 0; - print_simple_command (simple_command); - -#if 0 - if (signal_in_progress (DEBUG_TRAP) == 0 && (this_command_name == 0 || (STREQ (this_command_name, "trap") == 0))) -#else - if (signal_in_progress (DEBUG_TRAP) == 0 && running_trap == 0) -#endif - { - FREE (the_printed_command_except_trap); - the_printed_command_except_trap = the_printed_command ? savestring (the_printed_command) : (char *)0; - } - - /* Run the debug trap before each simple command, but do it after we - update the line number information. */ - result = run_debug_trap (); -#if defined (DEBUGGER) - /* In debugging mode, if the DEBUG trap returns a non-zero status, we - skip the command. */ - if (debugging_mode && result != EXECUTION_SUCCESS) - return (EXECUTION_SUCCESS); -#endif - - first_word_quoted = - simple_command->words ? (simple_command->words->word->flags & W_QUOTED) : 0; - - last_command_subst_pid = NO_PID; - old_last_async_pid = last_asynchronous_pid; - - already_forked = dofork = 0; - - /* If we're in a pipeline or run in the background, set DOFORK so we - make the child early, before word expansion. This keeps assignment - statements from affecting the parent shell's environment when they - should not. */ - dofork = pipe_in != NO_PIPE || pipe_out != NO_PIPE || async; - - /* Something like `%2 &' should restart job 2 in the background, not cause - the shell to fork here. */ - if (dofork && pipe_in == NO_PIPE && pipe_out == NO_PIPE && - simple_command->words && simple_command->words->word && - simple_command->words->word->word && - (simple_command->words->word->word[0] == '%')) - dofork = 0; - - if (dofork) - { - /* Do this now, because execute_disk_command will do it anyway in the - vast majority of cases. */ - maybe_make_export_env (); - - /* Don't let a DEBUG trap overwrite the command string to be saved with - the process/job associated with this child. */ - if (make_child (savestring (the_printed_command_except_trap), async) == 0) - { - already_forked = 1; - simple_command->flags |= CMD_NO_FORK; - - subshell_environment = SUBSHELL_FORK; - if (pipe_in != NO_PIPE || pipe_out != NO_PIPE) - subshell_environment |= SUBSHELL_PIPE; - if (async) - subshell_environment |= SUBSHELL_ASYNC; - - /* We need to do this before piping to handle some really - pathological cases where one of the pipe file descriptors - is < 2. */ - if (fds_to_close) - close_fd_bitmap (fds_to_close); - - do_piping (pipe_in, pipe_out); - pipe_in = pipe_out = NO_PIPE; -#if defined (COPROCESS_SUPPORT) - coproc_closeall (); -#endif - - last_asynchronous_pid = old_last_async_pid; - } - else - { - /* Don't let simple commands that aren't the last command in a - pipeline change $? for the rest of the pipeline (or at all). */ - if (pipe_out != NO_PIPE) - result = last_command_exit_value; - close_pipes (pipe_in, pipe_out); -#if defined (PROCESS_SUBSTITUTION) && defined (HAVE_DEV_FD) - unlink_fifo_list (); -#endif - command_line = (char *)NULL; /* don't free this. */ - bind_lastarg ((char *)NULL); - return (result); - } - } - - /* If we are re-running this as the result of executing the `command' - builtin, do not expand the command words a second time. */ - if ((simple_command->flags & CMD_INHIBIT_EXPANSION) == 0) - { - current_fds_to_close = fds_to_close; - fix_assignment_words (simple_command->words); - /* Pass the ignore return flag down to command substitutions */ - if (simple_command->flags & CMD_IGNORE_RETURN) /* XXX */ - comsub_ignore_return++; - words = expand_words (simple_command->words); - if (simple_command->flags & CMD_IGNORE_RETURN) - comsub_ignore_return--; - current_fds_to_close = (struct fd_bitmap *)NULL; - } - else - words = copy_word_list (simple_command->words); - - /* It is possible for WORDS not to have anything left in it. - Perhaps all the words consisted of `$foo', and there was - no variable `$foo'. */ - if (words == 0) - { - this_command_name = 0; - result = execute_null_command (simple_command->redirects, - pipe_in, pipe_out, - already_forked ? 0 : async); - if (already_forked) - exit (result); - else - { - bind_lastarg ((char *)NULL); - set_pipestatus_from_exit (result); - return (result); - } - } - - lastarg = (char *)NULL; - - begin_unwind_frame ("simple-command"); - - if (echo_command_at_execute) - xtrace_print_word_list (words, 1); - - builtin = (sh_builtin_func_t *)NULL; - func = (SHELL_VAR *)NULL; - if ((simple_command->flags & CMD_NO_FUNCTIONS) == 0) - { - /* Posix.2 says special builtins are found before functions. We - don't set builtin_is_special anywhere other than here, because - this path is followed only when the `command' builtin is *not* - being used, and we don't want to exit the shell if a special - builtin executed with `command builtin' fails. `command' is not - a special builtin. */ - if (posixly_correct) - { - builtin = find_special_builtin (words->word->word); - if (builtin) - builtin_is_special = 1; - } - if (builtin == 0) - func = find_function (words->word->word); - } - - /* In POSIX mode, assignment errors in the temporary environment cause a - non-interactive shell to exit. */ - if (builtin_is_special && interactive_shell == 0 && tempenv_assign_error) - { - last_command_exit_value = EXECUTION_FAILURE; - jump_to_top_level (ERREXIT); - } - - add_unwind_protect (dispose_words, words); - QUIT; - - /* Bind the last word in this command to "$_" after execution. */ - for (lastword = words; lastword->next; lastword = lastword->next) - ; - lastarg = lastword->word->word; - -#if defined (JOB_CONTROL) - /* Is this command a job control related thing? */ - if (words->word->word[0] == '%' && already_forked == 0) - { - this_command_name = async ? "bg" : "fg"; - last_shell_builtin = this_shell_builtin; - this_shell_builtin = builtin_address (this_command_name); - result = (*this_shell_builtin) (words); - goto return_result; - } - - /* One other possiblilty. The user may want to resume an existing job. - If they do, find out whether this word is a candidate for a running - job. */ - if (job_control && already_forked == 0 && async == 0 && - !first_word_quoted && - !words->next && - words->word->word[0] && - !simple_command->redirects && - pipe_in == NO_PIPE && - pipe_out == NO_PIPE && - (temp = get_string_value ("auto_resume"))) - { - int job, jflags, started_status; - - jflags = JM_STOPPED|JM_FIRSTMATCH; - if (STREQ (temp, "exact")) - jflags |= JM_EXACT; - else if (STREQ (temp, "substring")) - jflags |= JM_SUBSTRING; - else - jflags |= JM_PREFIX; - job = get_job_by_name (words->word->word, jflags); - if (job != NO_JOB) - { - run_unwind_frame ("simple-command"); - this_command_name = "fg"; - last_shell_builtin = this_shell_builtin; - this_shell_builtin = builtin_address ("fg"); - - started_status = start_job (job, 1); - return ((started_status < 0) ? EXECUTION_FAILURE : started_status); - } - } -#endif /* JOB_CONTROL */ - -run_builtin: - /* Remember the name of this command globally. */ - this_command_name = words->word->word; - - QUIT; - - /* This command could be a shell builtin or a user-defined function. - We have already found special builtins by this time, so we do not - set builtin_is_special. If this is a function or builtin, and we - have pipes, then fork a subshell in here. Otherwise, just execute - the command directly. */ - if (func == 0 && builtin == 0) - builtin = find_shell_builtin (this_command_name); - - last_shell_builtin = this_shell_builtin; - this_shell_builtin = builtin; - - if (builtin || func) - { - if (builtin) - { - old_builtin = executing_builtin; - old_command_builtin = executing_command_builtin; - unwind_protect_int (executing_builtin); /* modified in execute_builtin */ - unwind_protect_int (executing_command_builtin); /* ditto */ - } - if (already_forked) - { - /* reset_terminating_signals (); */ /* XXX */ - /* Reset the signal handlers in the child, but don't free the - trap strings. Set a flag noting that we have to free the - trap strings if we run trap to change a signal disposition. */ - reset_signal_handlers (); - subshell_environment |= SUBSHELL_RESETTRAP; - - if (async) - { - if ((simple_command->flags & CMD_STDIN_REDIR) && - pipe_in == NO_PIPE && - (stdin_redirects (simple_command->redirects) == 0)) - async_redirect_stdin (); - setup_async_signals (); - } - - subshell_level++; - execute_subshell_builtin_or_function - (words, simple_command->redirects, builtin, func, - pipe_in, pipe_out, async, fds_to_close, - simple_command->flags); - subshell_level--; - } - else - { - result = execute_builtin_or_function - (words, builtin, func, simple_command->redirects, fds_to_close, - simple_command->flags); - if (builtin) - { - if (result > EX_SHERRBASE) - { - result = builtin_status (result); - if (builtin_is_special) - special_builtin_failed = 1; - } - /* In POSIX mode, if there are assignment statements preceding - a special builtin, they persist after the builtin - completes. */ - if (posixly_correct && builtin_is_special && temporary_env) - merge_temporary_env (); - } - else /* function */ - { - if (result == EX_USAGE) - result = EX_BADUSAGE; - else if (result > EX_SHERRBASE) - result = EXECUTION_FAILURE; - } - - set_pipestatus_from_exit (result); - - goto return_result; - } - } - - if (autocd && interactive && words->word && is_dirname (words->word->word)) - { - words = make_word_list (make_word ("cd"), words); - xtrace_print_word_list (words, 0); - goto run_builtin; - } - - if (command_line == 0) - command_line = savestring (the_printed_command_except_trap); - -#if defined (PROCESS_SUBSTITUTION) - if ((subshell_environment & SUBSHELL_COMSUB) && (simple_command->flags & CMD_NO_FORK) && fifos_pending() > 0) - simple_command->flags &= ~CMD_NO_FORK; -#endif - - result = execute_disk_command (words, simple_command->redirects, command_line, - pipe_in, pipe_out, async, fds_to_close, - simple_command->flags); - - return_result: - bind_lastarg (lastarg); - FREE (command_line); - dispose_words (words); - if (builtin) - { - executing_builtin = old_builtin; - executing_command_builtin = old_command_builtin; - } - discard_unwind_frame ("simple-command"); - this_command_name = (char *)NULL; /* points to freed memory now */ - return (result); -} - -/* Translate the special builtin exit statuses. We don't really need a - function for this; it's a placeholder for future work. */ -static int -builtin_status (result) - int result; -{ - int r; - - switch (result) - { - case EX_USAGE: - r = EX_BADUSAGE; - break; - case EX_REDIRFAIL: - case EX_BADSYNTAX: - case EX_BADASSIGN: - case EX_EXPFAIL: - r = EXECUTION_FAILURE; - break; - default: - r = EXECUTION_SUCCESS; - break; - } - return (r); -} - -static int -execute_builtin (builtin, words, flags, subshell) - sh_builtin_func_t *builtin; - WORD_LIST *words; - int flags, subshell; -{ - int old_e_flag, result, eval_unwind; - int isbltinenv; - char *error_trap; - - error_trap = 0; - old_e_flag = exit_immediately_on_error; - /* The eval builtin calls parse_and_execute, which does not know about - the setting of flags, and always calls the execution functions with - flags that will exit the shell on an error if -e is set. If the - eval builtin is being called, and we're supposed to ignore the exit - value of the command, we turn the -e flag off ourselves and disable - the ERR trap, then restore them when the command completes. This is - also a problem (as below) for the command and source/. builtins. */ - if (subshell == 0 && (flags & CMD_IGNORE_RETURN) && - (builtin == eval_builtin || builtin == command_builtin || builtin == source_builtin)) - { - begin_unwind_frame ("eval_builtin"); - unwind_protect_int (exit_immediately_on_error); - error_trap = TRAP_STRING (ERROR_TRAP); - if (error_trap) - { - error_trap = savestring (error_trap); - add_unwind_protect (xfree, error_trap); - add_unwind_protect (set_error_trap, error_trap); - restore_default_signal (ERROR_TRAP); - } - exit_immediately_on_error = 0; - eval_unwind = 1; - } - else - eval_unwind = 0; - - /* The temporary environment for a builtin is supposed to apply to - all commands executed by that builtin. Currently, this is a - problem only with the `unset', `source' and `eval' builtins. */ - - isbltinenv = (builtin == source_builtin || builtin == eval_builtin || builtin == unset_builtin); - - if (isbltinenv) - { - if (subshell == 0) - begin_unwind_frame ("builtin_env"); - - if (temporary_env) - { - push_scope (VC_BLTNENV, temporary_env); - if (subshell == 0) - add_unwind_protect (pop_scope, (flags & CMD_COMMAND_BUILTIN) ? 0 : "1"); - temporary_env = (HASH_TABLE *)NULL; - } - } - - /* `return' does a longjmp() back to a saved environment in execute_function. - If a variable assignment list preceded the command, and the shell is - running in POSIX mode, we need to merge that into the shell_variables - table, since `return' is a POSIX special builtin. */ - if (posixly_correct && subshell == 0 && builtin == return_builtin && temporary_env) - { - begin_unwind_frame ("return_temp_env"); - add_unwind_protect (merge_temporary_env, (char *)NULL); - } - - executing_builtin++; - executing_command_builtin |= builtin == command_builtin; - result = ((*builtin) (words->next)); - - /* This shouldn't happen, but in case `return' comes back instead of - longjmp'ing, we need to unwind. */ - if (posixly_correct && subshell == 0 && builtin == return_builtin && temporary_env) - discard_unwind_frame ("return_temp_env"); - - if (subshell == 0 && isbltinenv) - run_unwind_frame ("builtin_env"); - - if (eval_unwind) - { - exit_immediately_on_error += old_e_flag; - if (error_trap) - { - set_error_trap (error_trap); - xfree (error_trap); - } - discard_unwind_frame ("eval_builtin"); - } - - return (result); -} - -static int -execute_function (var, words, flags, fds_to_close, async, subshell) - SHELL_VAR *var; - WORD_LIST *words; - int flags; - struct fd_bitmap *fds_to_close; - int async, subshell; -{ - int return_val, result; - COMMAND *tc, *fc, *save_current; - char *debug_trap, *error_trap, *return_trap; -#if defined (ARRAY_VARS) - SHELL_VAR *funcname_v, *nfv, *bash_source_v, *bash_lineno_v; - ARRAY *funcname_a; - volatile ARRAY *bash_source_a; - volatile ARRAY *bash_lineno_a; -#endif - FUNCTION_DEF *shell_fn; - char *sfile, *t; - - USE_VAR(fc); - - if (funcnest_max > 0 && funcnest >= funcnest_max) - { - internal_error (_("%s: maximum function nesting level exceeded (%d)"), var->name, funcnest); - funcnest = 0; /* XXX - should we reset it somewhere else? */ - jump_to_top_level (DISCARD); - } - -#if defined (ARRAY_VARS) - GET_ARRAY_FROM_VAR ("FUNCNAME", funcname_v, funcname_a); - GET_ARRAY_FROM_VAR ("BASH_SOURCE", bash_source_v, bash_source_a); - GET_ARRAY_FROM_VAR ("BASH_LINENO", bash_lineno_v, bash_lineno_a); -#endif - - tc = (COMMAND *)copy_command (function_cell (var)); - if (tc && (flags & CMD_IGNORE_RETURN)) - tc->flags |= CMD_IGNORE_RETURN; - - if (subshell == 0) - { - begin_unwind_frame ("function_calling"); - push_context (var->name, subshell, temporary_env); - add_unwind_protect (pop_context, (char *)NULL); - unwind_protect_int (line_number); - unwind_protect_int (return_catch_flag); - unwind_protect_jmp_buf (return_catch); - add_unwind_protect (dispose_command, (char *)tc); - unwind_protect_pointer (this_shell_function); - unwind_protect_int (loop_level); - unwind_protect_int (funcnest); - } - else - push_context (var->name, subshell, temporary_env); /* don't unwind-protect for subshells */ - - temporary_env = (HASH_TABLE *)NULL; - - this_shell_function = var; - make_funcname_visible (1); - - debug_trap = TRAP_STRING(DEBUG_TRAP); - error_trap = TRAP_STRING(ERROR_TRAP); - return_trap = TRAP_STRING(RETURN_TRAP); - - /* The order of the unwind protects for debug_trap, error_trap and - return_trap is important here! unwind-protect commands are run - in reverse order of registration. If this causes problems, take - out the xfree unwind-protect calls and live with the small memory leak. */ - - /* function_trace_mode != 0 means that all functions inherit the DEBUG trap. - if the function has the trace attribute set, it inherits the DEBUG trap */ - if (debug_trap && ((trace_p (var) == 0) && function_trace_mode == 0)) - { - if (subshell == 0) - { - debug_trap = savestring (debug_trap); - add_unwind_protect (xfree, debug_trap); - add_unwind_protect (set_debug_trap, debug_trap); - } - restore_default_signal (DEBUG_TRAP); - } - - /* error_trace_mode != 0 means that functions inherit the ERR trap. */ - if (error_trap && error_trace_mode == 0) - { - if (subshell == 0) - { - error_trap = savestring (error_trap); - add_unwind_protect (xfree, error_trap); - add_unwind_protect (set_error_trap, error_trap); - } - restore_default_signal (ERROR_TRAP); - } - - /* Shell functions inherit the RETURN trap if function tracing is on - globally or on individually for this function. */ -#if 0 - if (return_trap && ((trace_p (var) == 0) && function_trace_mode == 0)) -#else - if (return_trap && (signal_in_progress (DEBUG_TRAP) || ((trace_p (var) == 0) && function_trace_mode == 0))) -#endif - { - if (subshell == 0) - { - return_trap = savestring (return_trap); - add_unwind_protect (xfree, return_trap); - add_unwind_protect (set_return_trap, return_trap); - } - restore_default_signal (RETURN_TRAP); - } - - funcnest++; -#if defined (ARRAY_VARS) - /* This is quite similar to the code in shell.c and elsewhere. */ - shell_fn = find_function_def (this_shell_function->name); - sfile = shell_fn ? shell_fn->source_file : ""; - array_push ((ARRAY *)funcname_a, this_shell_function->name); - - array_push ((ARRAY *)bash_source_a, sfile); - t = itos (executing_line_number ()); - array_push ((ARRAY *)bash_lineno_a, t); - free (t); -#endif - - /* The temporary environment for a function is supposed to apply to - all commands executed within the function body. */ - - remember_args (words->next, 1); - - /* Update BASH_ARGV and BASH_ARGC */ - if (debugging_mode) - push_args (words->next); - - /* Number of the line on which the function body starts. */ - line_number = function_line_number = tc->line; - -#if defined (JOB_CONTROL) - if (subshell) - stop_pipeline (async, (COMMAND *)NULL); -#endif - - fc = tc; - - return_catch_flag++; - return_val = setjmp (return_catch); - - if (return_val) - { - result = return_catch_value; - /* Run the RETURN trap in the function's context. */ - save_current = currently_executing_command; - run_return_trap (); - currently_executing_command = save_current; - } - else - { - /* Run the debug trap here so we can trap at the start of a function's - execution rather than the execution of the body's first command. */ - showing_function_line = 1; - save_current = currently_executing_command; - result = run_debug_trap (); -#if defined (DEBUGGER) - /* In debugging mode, if the DEBUG trap returns a non-zero status, we - skip the command. */ - if (debugging_mode == 0 || result == EXECUTION_SUCCESS) - { - showing_function_line = 0; - currently_executing_command = save_current; - result = execute_command_internal (fc, 0, NO_PIPE, NO_PIPE, fds_to_close); - - /* Run the RETURN trap in the function's context */ - save_current = currently_executing_command; - run_return_trap (); - currently_executing_command = save_current; - } -#else - result = execute_command_internal (fc, 0, NO_PIPE, NO_PIPE, fds_to_close); - - save_current = currently_executing_command; - run_return_trap (); - currently_executing_command = save_current; -#endif - showing_function_line = 0; - } - - /* Restore BASH_ARGC and BASH_ARGV */ - if (debugging_mode) - pop_args (); - - if (subshell == 0) - run_unwind_frame ("function_calling"); - -#if defined (ARRAY_VARS) - /* These two variables cannot be unset, and cannot be affected by the - function. */ - array_pop ((ARRAY *)bash_source_a); - array_pop ((ARRAY *)bash_lineno_a); - - /* FUNCNAME can be unset, and so can potentially be changed by the - function. */ - GET_ARRAY_FROM_VAR ("FUNCNAME", nfv, funcname_a); - if (nfv == funcname_v) - array_pop (funcname_a); -#endif - - if (variable_context == 0 || this_shell_function == 0) - { - make_funcname_visible (0); -#if defined (PROCESS_SUBSTITUTION) - unlink_fifo_list (); -#endif - } - - return (result); -} - -/* A convenience routine for use by other parts of the shell to execute - a particular shell function. */ -int -execute_shell_function (var, words) - SHELL_VAR *var; - WORD_LIST *words; -{ - int ret; - struct fd_bitmap *bitmap; - - bitmap = new_fd_bitmap (FD_BITMAP_DEFAULT_SIZE); - begin_unwind_frame ("execute-shell-function"); - add_unwind_protect (dispose_fd_bitmap, (char *)bitmap); - - ret = execute_function (var, words, 0, bitmap, 0, 0); - - dispose_fd_bitmap (bitmap); - discard_unwind_frame ("execute-shell-function"); - - return ret; -} - -/* Execute a shell builtin or function in a subshell environment. This - routine does not return; it only calls exit(). If BUILTIN is non-null, - it points to a function to call to execute a shell builtin; otherwise - VAR points at the body of a function to execute. WORDS is the arguments - to the command, REDIRECTS specifies redirections to perform before the - command is executed. */ -static void -execute_subshell_builtin_or_function (words, redirects, builtin, var, - pipe_in, pipe_out, async, fds_to_close, - flags) - WORD_LIST *words; - REDIRECT *redirects; - sh_builtin_func_t *builtin; - SHELL_VAR *var; - int pipe_in, pipe_out, async; - struct fd_bitmap *fds_to_close; - int flags; -{ - int result, r, funcvalue; -#if defined (JOB_CONTROL) - int jobs_hack; - - jobs_hack = (builtin == jobs_builtin) && - ((subshell_environment & SUBSHELL_ASYNC) == 0 || pipe_out != NO_PIPE); -#endif - - /* A subshell is neither a login shell nor interactive. */ - login_shell = interactive = 0; - - if (async) - subshell_environment |= SUBSHELL_ASYNC; - if (pipe_in != NO_PIPE || pipe_out != NO_PIPE) - subshell_environment |= SUBSHELL_PIPE; - - maybe_make_export_env (); /* XXX - is this needed? */ - -#if defined (JOB_CONTROL) - /* Eradicate all traces of job control after we fork the subshell, so - all jobs begun by this subshell are in the same process group as - the shell itself. */ - - /* Allow the output of `jobs' to be piped. */ - if (jobs_hack) - kill_current_pipeline (); - else - without_job_control (); - - set_sigchld_handler (); -#endif /* JOB_CONTROL */ - - set_sigint_handler (); - - if (fds_to_close) - close_fd_bitmap (fds_to_close); - - do_piping (pipe_in, pipe_out); - - if (do_redirections (redirects, RX_ACTIVE) != 0) - exit (EXECUTION_FAILURE); - - if (builtin) - { - /* Give builtins a place to jump back to on failure, - so we don't go back up to main(). */ - result = setjmp (top_level); - - /* Give the return builtin a place to jump to when executed in a subshell - or pipeline */ - funcvalue = 0; - if (return_catch_flag && builtin == return_builtin) - funcvalue = setjmp (return_catch); - - if (result == EXITPROG) - exit (last_command_exit_value); - else if (result) - exit (EXECUTION_FAILURE); - else if (funcvalue) - exit (return_catch_value); - else - { - r = execute_builtin (builtin, words, flags, 1); - fflush (stdout); - if (r == EX_USAGE) - r = EX_BADUSAGE; - exit (r); - } - } - else - { - r = execute_function (var, words, flags, fds_to_close, async, 1); - fflush (stdout); - exit (r); - } -} - -/* Execute a builtin or function in the current shell context. If BUILTIN - is non-null, it is the builtin command to execute, otherwise VAR points - to the body of a function. WORDS are the command's arguments, REDIRECTS - are the redirections to perform. FDS_TO_CLOSE is the usual bitmap of - file descriptors to close. - - If BUILTIN is exec_builtin, the redirections specified in REDIRECTS are - not undone before this function returns. */ -static int -execute_builtin_or_function (words, builtin, var, redirects, - fds_to_close, flags) - WORD_LIST *words; - sh_builtin_func_t *builtin; - SHELL_VAR *var; - REDIRECT *redirects; - struct fd_bitmap *fds_to_close; - int flags; -{ - int result; - REDIRECT *saved_undo_list; -#if defined (PROCESS_SUBSTITUTION) - int ofifo, nfifo, osize; - char *ofifo_list; -#endif - - -#if defined (PROCESS_SUBSTITUTION) - ofifo = num_fifos (); - ofifo_list = copy_fifo_list (&osize); -#endif - - if (do_redirections (redirects, RX_ACTIVE|RX_UNDOABLE) != 0) - { - cleanup_redirects (redirection_undo_list); - redirection_undo_list = (REDIRECT *)NULL; - dispose_exec_redirects (); -#if defined (PROCESS_SUBSTITUTION) - free (ofifo_list); -#endif - return (EX_REDIRFAIL); /* was EXECUTION_FAILURE */ - } - - saved_undo_list = redirection_undo_list; - - /* Calling the "exec" builtin changes redirections forever. */ - if (builtin == exec_builtin) - { - dispose_redirects (saved_undo_list); - saved_undo_list = exec_redirection_undo_list; - exec_redirection_undo_list = (REDIRECT *)NULL; - } - else - dispose_exec_redirects (); - - if (saved_undo_list) - { - begin_unwind_frame ("saved redirects"); - add_unwind_protect (cleanup_redirects, (char *)saved_undo_list); - } - - redirection_undo_list = (REDIRECT *)NULL; - - if (builtin) - result = execute_builtin (builtin, words, flags, 0); - else - result = execute_function (var, words, flags, fds_to_close, 0, 0); - - /* We do this before undoing the effects of any redirections. */ - fflush (stdout); - fpurge (stdout); - if (ferror (stdout)) - clearerr (stdout); - - /* If we are executing the `command' builtin, but this_shell_builtin is - set to `exec_builtin', we know that we have something like - `command exec [redirection]', since otherwise `exec' would have - overwritten the shell and we wouldn't get here. In this case, we - want to behave as if the `command' builtin had not been specified - and preserve the redirections. */ - if (builtin == command_builtin && this_shell_builtin == exec_builtin) - { - int discard; - - discard = 0; - if (saved_undo_list) - { - dispose_redirects (saved_undo_list); - discard = 1; - } - redirection_undo_list = exec_redirection_undo_list; - saved_undo_list = exec_redirection_undo_list = (REDIRECT *)NULL; - if (discard) - discard_unwind_frame ("saved redirects"); - } - - if (saved_undo_list) - { - redirection_undo_list = saved_undo_list; - discard_unwind_frame ("saved redirects"); - } - - if (redirection_undo_list) - { - cleanup_redirects (redirection_undo_list); - redirection_undo_list = (REDIRECT *)NULL; - } - -#if defined (PROCESS_SUBSTITUTION) - /* Close any FIFOs created by this builtin or function. */ - nfifo = num_fifos (); - if (nfifo > ofifo) - close_new_fifos (ofifo_list, osize); - free (ofifo_list); -#endif - - return (result); -} - -void -setup_async_signals () -{ -#if defined (__BEOS__) - set_signal_handler (SIGHUP, SIG_IGN); /* they want csh-like behavior */ -#endif - -#if defined (JOB_CONTROL) - if (job_control == 0) -#endif - { - set_signal_handler (SIGINT, SIG_IGN); - set_signal_ignored (SIGINT); - set_signal_handler (SIGQUIT, SIG_IGN); - set_signal_ignored (SIGQUIT); - } -} - -/* Execute a simple command that is hopefully defined in a disk file - somewhere. - - 1) fork () - 2) connect pipes - 3) look up the command - 4) do redirections - 5) execve () - 6) If the execve failed, see if the file has executable mode set. - If so, and it isn't a directory, then execute its contents as - a shell script. - - Note that the filename hashing stuff has to take place up here, - in the parent. This is probably why the Bourne style shells - don't handle it, since that would require them to go through - this gnarly hair, for no good reason. - - NOTE: callers expect this to fork or exit(). */ - -/* Name of a shell function to call when a command name is not found. */ -#ifndef NOTFOUND_HOOK -# define NOTFOUND_HOOK "command_not_found_handle" -#endif - -static int -execute_disk_command (words, redirects, command_line, pipe_in, pipe_out, - async, fds_to_close, cmdflags) - WORD_LIST *words; - REDIRECT *redirects; - char *command_line; - int pipe_in, pipe_out, async; - struct fd_bitmap *fds_to_close; - int cmdflags; -{ - char *pathname, *command, **args; - int nofork, result; - pid_t pid; - SHELL_VAR *hookf; - WORD_LIST *wl; - - nofork = (cmdflags & CMD_NO_FORK); /* Don't fork, just exec, if no pipes */ - pathname = words->word->word; - - result = EXECUTION_SUCCESS; -#if defined (RESTRICTED_SHELL) - command = (char *)NULL; - if (restricted && mbschr (pathname, '/')) - { - internal_error (_("%s: restricted: cannot specify `/' in command names"), - pathname); - result = last_command_exit_value = EXECUTION_FAILURE; - - /* If we're not going to fork below, we must already be in a child - process or a context in which it's safe to call exit(2). */ - if (nofork && pipe_in == NO_PIPE && pipe_out == NO_PIPE) - exit (last_command_exit_value); - else - goto parent_return; - } -#endif /* RESTRICTED_SHELL */ - - command = search_for_command (pathname, 1); - - if (command) - { - maybe_make_export_env (); - put_command_name_into_env (command); - } - - /* We have to make the child before we check for the non-existence - of COMMAND, since we want the error messages to be redirected. */ - /* If we can get away without forking and there are no pipes to deal with, - don't bother to fork, just directly exec the command. */ - if (nofork && pipe_in == NO_PIPE && pipe_out == NO_PIPE) - pid = 0; - else - pid = make_child (savestring (command_line), async); - - if (pid == 0) - { - int old_interactive; - -#if 0 - /* This has been disabled for the time being. */ -#if !defined (ARG_MAX) || ARG_MAX >= 10240 - if (posixly_correct == 0) - put_gnu_argv_flags_into_env ((long)getpid (), glob_argv_flags); -#endif -#endif - - reset_terminating_signals (); /* XXX */ - /* Cancel traps, in trap.c. */ - restore_original_signals (); - - /* restore_original_signals may have undone the work done - by make_child to ensure that SIGINT and SIGQUIT are ignored - in asynchronous children. */ - if (async) - { - if ((cmdflags & CMD_STDIN_REDIR) && - pipe_in == NO_PIPE && - (stdin_redirects (redirects) == 0)) - async_redirect_stdin (); - setup_async_signals (); - } - - /* This functionality is now provided by close-on-exec of the - file descriptors manipulated by redirection and piping. - Some file descriptors still need to be closed in all children - because of the way bash does pipes; fds_to_close is a - bitmap of all such file descriptors. */ - if (fds_to_close) - close_fd_bitmap (fds_to_close); - - do_piping (pipe_in, pipe_out); - - old_interactive = interactive; - if (async) - interactive = 0; - - subshell_environment = SUBSHELL_FORK; - - if (redirects && (do_redirections (redirects, RX_ACTIVE) != 0)) - { -#if defined (PROCESS_SUBSTITUTION) - /* Try to remove named pipes that may have been created as the - result of redirections. */ - unlink_fifo_list (); -#endif /* PROCESS_SUBSTITUTION */ - exit (EXECUTION_FAILURE); - } - - if (async) - interactive = old_interactive; - - if (command == 0) - { -itrace("not found"); - hookf = find_function (NOTFOUND_HOOK); - if (hookf == 0) - { - /* Make sure filenames are displayed using printable characters */ - if (ansic_shouldquote (pathname)) - pathname = ansic_quote (pathname, 0, NULL); - internal_error (_("%s: command not found"), pathname); - exit (EX_NOTFOUND); /* Posix.2 says the exit status is 127 */ - } - - wl = make_word_list (make_word (NOTFOUND_HOOK), words); - exit (execute_shell_function (hookf, wl)); - } - - /* Execve expects the command name to be in args[0]. So we - leave it there, in the same format that the user used to - type it in. */ - args = strvec_from_word_list (words, 0, 0, (int *)NULL); - exit (shell_execve (command, args, export_env)); - } - else - { -parent_return: - QUIT; - - /* Make sure that the pipes are closed in the parent. */ - close_pipes (pipe_in, pipe_out); -#if defined (PROCESS_SUBSTITUTION) && defined (HAVE_DEV_FD) - if (variable_context == 0) - unlink_fifo_list (); -#endif - FREE (command); - return (result); - } -} - -/* CPP defines to decide whether a particular index into the #! line - corresponds to a valid interpreter name or argument character, or - whitespace. The MSDOS define is to allow \r to be treated the same - as \n. */ - -#if !defined (MSDOS) -# define STRINGCHAR(ind) \ - (ind < sample_len && !whitespace (sample[ind]) && sample[ind] != '\n') -# define WHITECHAR(ind) \ - (ind < sample_len && whitespace (sample[ind])) -#else /* MSDOS */ -# define STRINGCHAR(ind) \ - (ind < sample_len && !whitespace (sample[ind]) && sample[ind] != '\n' && sample[ind] != '\r') -# define WHITECHAR(ind) \ - (ind < sample_len && whitespace (sample[ind])) -#endif /* MSDOS */ - -static char * -getinterp (sample, sample_len, endp) - char *sample; - int sample_len, *endp; -{ - register int i; - char *execname; - int start; - - /* Find the name of the interpreter to exec. */ - for (i = 2; i < sample_len && whitespace (sample[i]); i++) - ; - - for (start = i; STRINGCHAR(i); i++) - ; - - execname = substring (sample, start, i); - - if (endp) - *endp = i; - return execname; -} - -#if !defined (HAVE_HASH_BANG_EXEC) -/* If the operating system on which we're running does not handle - the #! executable format, then help out. SAMPLE is the text read - from the file, SAMPLE_LEN characters. COMMAND is the name of - the script; it and ARGS, the arguments given by the user, will - become arguments to the specified interpreter. ENV is the environment - to pass to the interpreter. - - The word immediately following the #! is the interpreter to execute. - A single argument to the interpreter is allowed. */ - -static int -execute_shell_script (sample, sample_len, command, args, env) - char *sample; - int sample_len; - char *command; - char **args, **env; -{ - char *execname, *firstarg; - int i, start, size_increment, larry; - - /* Find the name of the interpreter to exec. */ - execname = getinterp (sample, sample_len, &i); - size_increment = 1; - - /* Now the argument, if any. */ - for (firstarg = (char *)NULL, start = i; WHITECHAR(i); i++) - ; - - /* If there is more text on the line, then it is an argument for the - interpreter. */ - - if (STRINGCHAR(i)) - { - for (start = i; STRINGCHAR(i); i++) - ; - firstarg = substring ((char *)sample, start, i); - size_increment = 2; - } - - larry = strvec_len (args) + size_increment; - args = strvec_resize (args, larry + 1); - - for (i = larry - 1; i; i--) - args[i] = args[i - size_increment]; - - args[0] = execname; - if (firstarg) - { - args[1] = firstarg; - args[2] = command; - } - else - args[1] = command; - - args[larry] = (char *)NULL; - - return (shell_execve (execname, args, env)); -} -#undef STRINGCHAR -#undef WHITECHAR - -#endif /* !HAVE_HASH_BANG_EXEC */ - -static void -initialize_subshell () -{ -#if defined (ALIAS) - /* Forget about any aliases that we knew of. We are in a subshell. */ - delete_all_aliases (); -#endif /* ALIAS */ - -#if defined (HISTORY) - /* Forget about the history lines we have read. This is a non-interactive - subshell. */ - history_lines_this_session = 0; -#endif - -#if defined (JOB_CONTROL) - /* Forget about the way job control was working. We are in a subshell. */ - without_job_control (); - set_sigchld_handler (); - init_job_stats (); -#endif /* JOB_CONTROL */ - - /* Reset the values of the shell flags and options. */ - reset_shell_flags (); - reset_shell_options (); - reset_shopt_options (); - - /* Zero out builtin_env, since this could be a shell script run from a - sourced file with a temporary environment supplied to the `source/.' - builtin. Such variables are not supposed to be exported (empirical - testing with sh and ksh). Just throw it away; don't worry about a - memory leak. */ - if (vc_isbltnenv (shell_variables)) - shell_variables = shell_variables->down; - - clear_unwind_protect_list (0); - /* XXX -- are there other things we should be resetting here? */ - parse_and_execute_level = 0; /* nothing left to restore it */ - - /* We're no longer inside a shell function. */ - variable_context = return_catch_flag = funcnest = 0; - - executing_list = 0; /* XXX */ - - /* If we're not interactive, close the file descriptor from which we're - reading the current shell script. */ - if (interactive_shell == 0) - unset_bash_input (0); -} - -#if defined (HAVE_SETOSTYPE) && defined (_POSIX_SOURCE) -# define SETOSTYPE(x) __setostype(x) -#else -# define SETOSTYPE(x) -#endif - -#define READ_SAMPLE_BUF(file, buf, len) \ - do \ - { \ - fd = open(file, O_RDONLY); \ - if (fd >= 0) \ - { \ - len = read (fd, buf, 80); \ - close (fd); \ - } \ - else \ - len = -1; \ - } \ - while (0) - -/* Call execve (), handling interpreting shell scripts, and handling - exec failures. */ -int -shell_execve (command, args, env) - char *command; - char **args, **env; -{ - int larray, i, fd; - char sample[80]; - int sample_len; - - SETOSTYPE (0); /* Some systems use for USG/POSIX semantics */ - execve (command, args, env); - i = errno; /* error from execve() */ - CHECK_TERMSIG; - SETOSTYPE (1); - - /* If we get to this point, then start checking out the file. - Maybe it is something we can hack ourselves. */ - if (i != ENOEXEC) - { - if (file_isdir (command)) -#if defined (EISDIR) - internal_error (_("%s: %s"), command, strerror (EISDIR)); -#else - internal_error (_("%s: is a directory"), command); -#endif - else if (executable_file (command) == 0) - { - errno = i; - file_error (command); - } - /* errors not involving the path argument to execve. */ - else if (i == E2BIG || i == ENOMEM) - { - errno = i; - file_error (command); - } - else - { - /* The file has the execute bits set, but the kernel refuses to - run it for some reason. See why. */ -#if defined (HAVE_HASH_BANG_EXEC) - READ_SAMPLE_BUF (command, sample, sample_len); - sample[sample_len - 1] = '\0'; - if (sample_len > 2 && sample[0] == '#' && sample[1] == '!') - { - char *interp; - int ilen; - - interp = getinterp (sample, sample_len, (int *)NULL); - ilen = strlen (interp); - errno = i; - if (interp[ilen - 1] == '\r') - { - interp = xrealloc (interp, ilen + 2); - interp[ilen - 1] = '^'; - interp[ilen] = 'M'; - interp[ilen + 1] = '\0'; - } - sys_error (_("%s: %s: bad interpreter"), command, interp ? interp : ""); - FREE (interp); - return (EX_NOEXEC); - } -#endif - errno = i; - file_error (command); - } - return ((i == ENOENT) ? EX_NOTFOUND : EX_NOEXEC); /* XXX Posix.2 says that exit status is 126 */ - } - - /* This file is executable. - If it begins with #!, then help out people with losing operating - systems. Otherwise, check to see if it is a binary file by seeing - if the contents of the first line (or up to 80 characters) are in the - ASCII set. If it's a text file, execute the contents as shell commands, - otherwise return 126 (EX_BINARY_FILE). */ - READ_SAMPLE_BUF (command, sample, sample_len); - - if (sample_len == 0) - return (EXECUTION_SUCCESS); - - /* Is this supposed to be an executable script? - If so, the format of the line is "#! interpreter [argument]". - A single argument is allowed. The BSD kernel restricts - the length of the entire line to 32 characters (32 bytes - being the size of the BSD exec header), but we allow 80 - characters. */ - if (sample_len > 0) - { -#if !defined (HAVE_HASH_BANG_EXEC) - if (sample_len > 2 && sample[0] == '#' && sample[1] == '!') - return (execute_shell_script (sample, sample_len, command, args, env)); - else -#endif - if (check_binary_file (sample, sample_len)) - { - internal_error (_("%s: cannot execute binary file: %s"), command, strerror (i)); - return (EX_BINARY_FILE); - } - } - - /* We have committed to attempting to execute the contents of this file - as shell commands. */ - - initialize_subshell (); - - set_sigint_handler (); - - /* Insert the name of this shell into the argument list. */ - larray = strvec_len (args) + 1; - args = strvec_resize (args, larray + 1); - - for (i = larray - 1; i; i--) - args[i] = args[i - 1]; - - args[0] = shell_name; - args[1] = command; - args[larray] = (char *)NULL; - - if (args[0][0] == '-') - args[0]++; - -#if defined (RESTRICTED_SHELL) - if (restricted) - change_flag ('r', FLAG_OFF); -#endif - - if (subshell_argv) - { - /* Can't free subshell_argv[0]; that is shell_name. */ - for (i = 1; i < subshell_argc; i++) - free (subshell_argv[i]); - free (subshell_argv); - } - - dispose_command (currently_executing_command); /* XXX */ - currently_executing_command = (COMMAND *)NULL; - - subshell_argc = larray; - subshell_argv = args; - subshell_envp = env; - - unbind_args (); /* remove the positional parameters */ - - longjmp (subshell_top_level, 1); - /*NOTREACHED*/ -} - -static int -execute_intern_function (name, funcdef) - WORD_DESC *name; - FUNCTION_DEF *funcdef; -{ - SHELL_VAR *var; - - if (check_identifier (name, posixly_correct) == 0) - { - if (posixly_correct && interactive_shell == 0) - { - last_command_exit_value = EX_BADUSAGE; - jump_to_top_level (ERREXIT); - } - return (EXECUTION_FAILURE); - } - - /* Posix interpretation 383 */ - if (posixly_correct && find_special_builtin (name->word)) - { - internal_error (_("`%s': is a special builtin"), name->word); - last_command_exit_value = EX_BADUSAGE; - jump_to_top_level (ERREXIT); - } - - var = find_function (name->word); - if (var && (readonly_p (var) || noassign_p (var))) - { - if (readonly_p (var)) - internal_error (_("%s: readonly function"), var->name); - return (EXECUTION_FAILURE); - } - -#if defined (DEBUGGER) - bind_function_def (name->word, funcdef); -#endif - - bind_function (name->word, funcdef->command); - return (EXECUTION_SUCCESS); -} - -#if defined (INCLUDE_UNUSED) -#if defined (PROCESS_SUBSTITUTION) -void -close_all_files () -{ - register int i, fd_table_size; - - fd_table_size = getdtablesize (); - if (fd_table_size > 256) /* clamp to a reasonable value */ - fd_table_size = 256; - - for (i = 3; i < fd_table_size; i++) - close (i); -} -#endif /* PROCESS_SUBSTITUTION */ -#endif - -static void -close_pipes (in, out) - int in, out; -{ - if (in >= 0) - close (in); - if (out >= 0) - close (out); -} - -static void -dup_error (oldd, newd) - int oldd, newd; -{ - sys_error (_("cannot duplicate fd %d to fd %d"), oldd, newd); -} - -/* Redirect input and output to be from and to the specified pipes. - NO_PIPE and REDIRECT_BOTH are handled correctly. */ -static void -do_piping (pipe_in, pipe_out) - int pipe_in, pipe_out; -{ - if (pipe_in != NO_PIPE) - { - if (dup2 (pipe_in, 0) < 0) - dup_error (pipe_in, 0); - if (pipe_in > 0) - close (pipe_in); -#ifdef __CYGWIN__ - /* Let stdio know the fd may have changed from text to binary mode. */ - freopen (NULL, "r", stdin); -#endif /* __CYGWIN__ */ - } - if (pipe_out != NO_PIPE) - { - if (pipe_out != REDIRECT_BOTH) - { - if (dup2 (pipe_out, 1) < 0) - dup_error (pipe_out, 1); - if (pipe_out == 0 || pipe_out > 1) - close (pipe_out); - } - else - { - if (dup2 (1, 2) < 0) - dup_error (1, 2); - } -#ifdef __CYGWIN__ - /* Let stdio know the fd may have changed from text to binary mode, and - make sure to preserve stdout line buffering. */ - freopen (NULL, "w", stdout); - sh_setlinebuf (stdout); -#endif /* __CYGWIN__ */ - } -} diff --git a/externs.h~ b/externs.h~ deleted file mode 100644 index 57f7117f5..000000000 --- a/externs.h~ +++ /dev/null @@ -1,500 +0,0 @@ -/* externs.h -- extern function declarations which do not appear in their - own header file. */ - -/* Copyright (C) 1993-2010 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -/* Make sure that this is included *after* config.h! */ - -#if !defined (_EXTERNS_H_) -# define _EXTERNS_H_ - -#include "stdc.h" - -/* Functions from expr.c. */ -extern intmax_t evalexp __P((char *, int *)); - -/* Functions from print_cmd.c. */ -#define FUNC_MULTILINE 0x01 -#define FUNC_EXTERNAL 0x02 - -extern char *make_command_string __P((COMMAND *)); -extern char *named_function_string __P((char *, COMMAND *, int)); - -extern void print_command __P((COMMAND *)); -extern void print_simple_command __P((SIMPLE_COM *)); -extern void print_word_list __P((WORD_LIST *, char *)); - -/* debugger support */ -extern void print_for_command_head __P((FOR_COM *)); -#if defined (SELECT_COMMAND) -extern void print_select_command_head __P((SELECT_COM *)); -#endif -extern void print_case_command_head __P((CASE_COM *)); -#if defined (DPAREN_ARITHMETIC) -extern void print_arith_command __P((WORD_LIST *)); -#endif -#if defined (COND_COMMAND) -extern void print_cond_command __P((COND_COM *)); -#endif - -/* set -x support */ -extern void xtrace_init __P((void)); -#ifdef NEED_XTRACE_SET_DECL -extern void xtrace_set __P((int, FILE *)); -#endif -extern void xtrace_fdchk __P((int)); -extern void xtrace_reset __P((void)); -extern char *indirection_level_string __P((void)); -extern void xtrace_print_assignment __P((char *, char *, int, int)); -extern void xtrace_print_word_list __P((WORD_LIST *, int)); -extern void xtrace_print_for_command_head __P((FOR_COM *)); -#if defined (SELECT_COMMAND) -extern void xtrace_print_select_command_head __P((SELECT_COM *)); -#endif -extern void xtrace_print_case_command_head __P((CASE_COM *)); -#if defined (DPAREN_ARITHMETIC) -extern void xtrace_print_arith_cmd __P((WORD_LIST *)); -#endif -#if defined (COND_COMMAND) -extern void xtrace_print_cond_term __P((int, int, WORD_DESC *, char *, char *)); -#endif - -/* Functions from shell.c. */ -extern void exit_shell __P((int)) __attribute__((__noreturn__)); -extern void sh_exit __P((int)) __attribute__((__noreturn__)); -extern void disable_priv_mode __P((void)); -extern void unbind_args __P((void)); - -#if defined (RESTRICTED_SHELL) -extern int shell_is_restricted __P((char *)); -extern int maybe_make_restricted __P((char *)); -#endif - -extern void unset_bash_input __P((int)); -extern void get_current_user_info __P((void)); - -/* Functions from eval.c. */ -extern int reader_loop __P((void)); -extern int parse_command __P((void)); -extern int read_command __P((void)); - -/* Functions from braces.c. */ -#if defined (BRACE_EXPANSION) -extern char **brace_expand __P((char *)); -#endif - -/* Miscellaneous functions from parse.y */ -extern int yyparse __P((void)); -extern int return_EOF __P((void)); -extern char *xparse_dolparen __P((char *, char *, int *, int)); -extern void reset_parser __P((void)); -extern WORD_LIST *parse_string_to_word_list __P((char *, int, const char *)); - -extern int parser_in_command_position __P((void)); - -extern void free_pushed_string_input __P((void)); - -extern char *decode_prompt_string __P((char *)); - -extern int get_current_prompt_level __P((void)); -extern void set_current_prompt_level __P((int)); - -#if defined (HISTORY) -extern char *history_delimiting_chars __P((const char *)); -#endif - -/* Declarations for functions defined in locale.c */ -extern void set_default_locale __P((void)); -extern void set_default_locale_vars __P((void)); -extern int set_locale_var __P((char *, char *)); -extern int set_lang __P((char *, char *)); -extern void set_default_lang __P((void)); -extern char *get_locale_var __P((char *)); -extern char *localetrans __P((char *, int, int *)); -extern char *mk_msgstr __P((char *, int *)); -extern char *localeexpand __P((char *, int, int, int, int *)); - -/* Declarations for functions defined in list.c. */ -extern void list_walk __P((GENERIC_LIST *, sh_glist_func_t *)); -extern void wlist_walk __P((WORD_LIST *, sh_icpfunc_t *)); -extern GENERIC_LIST *list_reverse (); -extern int list_length (); -extern GENERIC_LIST *list_append (); -extern GENERIC_LIST *list_remove (); - -/* Declarations for functions defined in stringlib.c */ -extern int find_string_in_alist __P((char *, STRING_INT_ALIST *, int)); -extern char *find_token_in_alist __P((int, STRING_INT_ALIST *, int)); -extern int find_index_in_alist __P((char *, STRING_INT_ALIST *, int)); - -extern char *substring __P((const char *, int, int)); -extern char *strsub __P((char *, char *, char *, int)); -extern char *strcreplace __P((char *, int, char *, int)); -extern void strip_leading __P((char *)); -extern void strip_trailing __P((char *, int, int)); -extern void xbcopy __P((char *, char *, int)); - -/* Functions from version.c. */ -extern char *shell_version_string __P((void)); -extern void show_shell_version __P((int)); - -/* Functions from the bash library, lib/sh/libsh.a. These should really - go into a separate include file. */ - -/* declarations for functions defined in lib/sh/casemod.c */ -extern char *sh_modcase __P((const char *, char *, int)); - -/* Defines for flags argument to sh_modcase. These need to agree with what's - in lib/sh/casemode.c */ -#define CASE_LOWER 0x0001 -#define CASE_UPPER 0x0002 -#define CASE_CAPITALIZE 0x0004 -#define CASE_UNCAP 0x0008 -#define CASE_TOGGLE 0x0010 -#define CASE_TOGGLEALL 0x0020 -#define CASE_UPFIRST 0x0040 -#define CASE_LOWFIRST 0x0080 - -#define CASE_USEWORDS 0x1000 - -/* declarations for functions defined in lib/sh/clktck.c */ -extern long get_clk_tck __P((void)); - -/* declarations for functions defined in lib/sh/clock.c */ -extern void clock_t_to_secs (); -extern void print_clock_t (); - -/* Declarations for functions defined in lib/sh/dprintf.c */ -#if !defined (HAVE_DPRINTF) -extern void dprintf __P((int, const char *, ...)) __attribute__((__format__ (printf, 2, 3))); -#endif - -/* Declarations for functions defined in lib/sh/fmtulong.c */ -#define FL_PREFIX 0x01 /* add 0x, 0X, or 0 prefix as appropriate */ -#define FL_ADDBASE 0x02 /* add base# prefix to converted value */ -#define FL_HEXUPPER 0x04 /* use uppercase when converting to hex */ -#define FL_UNSIGNED 0x08 /* don't add any sign */ - -extern char *fmtulong __P((unsigned long int, int, char *, size_t, int)); - -/* Declarations for functions defined in lib/sh/fmtulong.c */ -#if defined (HAVE_LONG_LONG) -extern char *fmtullong __P((unsigned long long int, int, char *, size_t, int)); -#endif - -/* Declarations for functions defined in lib/sh/fmtumax.c */ -extern char *fmtumax __P((uintmax_t, int, char *, size_t, int)); - -/* Declarations for functions defined in lib/sh/fnxform.c */ -extern char *fnx_fromfs __P((char *, size_t)); -extern char *fnx_tofs __P((char *, size_t)); - -/* Declarations for functions defined in lib/sh/fpurge.c */ - -#if defined NEED_FPURGE_DECL -#if !HAVE_DECL_FPURGE - -#if HAVE_FPURGE -# define fpurge _bash_fpurge -#endif -extern int fpurge __P((FILE *stream)); - -#endif /* HAVE_DECL_FPURGE */ -#endif /* NEED_FPURGE_DECL */ - -/* Declarations for functions defined in lib/sh/getcwd.c */ -#if !defined (HAVE_GETCWD) -extern char *getcwd __P((char *, size_t)); -#endif - -/* Declarations for functions defined in lib/sh/input_avail.c */ -extern int input_avail __P((int)); - -/* Declarations for functions defined in lib/sh/itos.c */ -extern char *inttostr __P((intmax_t, char *, size_t)); -extern char *itos __P((intmax_t)); -extern char *uinttostr __P((uintmax_t, char *, size_t)); -extern char *uitos __P((uintmax_t)); - -/* declarations for functions defined in lib/sh/makepath.c */ -#define MP_DOTILDE 0x01 -#define MP_DOCWD 0x02 -#define MP_RMDOT 0x04 -#define MP_IGNDOT 0x08 - -extern char *sh_makepath __P((const char *, const char *, int)); - -/* declarations for functions defined in lib/sh/mbscasecmp.c */ -#if !defined (HAVE_MBSCASECMP) -extern char *mbscasecmp __P((const char *, const char *)); -#endif - -/* declarations for functions defined in lib/sh/mbschr.c */ -#if !defined (HAVE_MBSCHR) -extern char *mbschr __P((const char *, int)); -#endif - -/* declarations for functions defined in lib/sh/mbscmp.c */ -#if !defined (HAVE_MBSCMP) -extern char *mbscmp __P((const char *, const char *)); -#endif - -/* declarations for functions defined in lib/sh/netconn.c */ -extern int isnetconn __P((int)); - -/* declarations for functions defined in lib/sh/netopen.c */ -extern int netopen __P((char *)); - -/* Declarations for functions defined in lib/sh/oslib.c */ - -#if !defined (HAVE_DUP2) || defined (DUP2_BROKEN) -extern int dup2 __P((int, int)); -#endif - -#if !defined (HAVE_GETDTABLESIZE) -extern int getdtablesize __P((void)); -#endif /* !HAVE_GETDTABLESIZE */ - -#if !defined (HAVE_GETHOSTNAME) -extern int gethostname __P((char *, int)); -#endif /* !HAVE_GETHOSTNAME */ - -extern int getmaxgroups __P((void)); -extern long getmaxchild __P((void)); - -/* declarations for functions defined in lib/sh/pathcanon.c */ -#define PATH_CHECKDOTDOT 0x0001 -#define PATH_CHECKEXISTS 0x0002 -#define PATH_HARDPATH 0x0004 -#define PATH_NOALLOC 0x0008 - -extern char *sh_canonpath __P((char *, int)); - -/* declarations for functions defined in lib/sh/pathphys.c */ -extern char *sh_physpath __P((char *, int)); -extern char *sh_realpath __P((const char *, char *)); - -/* declarations for functions defined in lib/sh/setlinebuf.c */ -#ifdef NEED_SH_SETLINEBUF_DECL -extern int sh_setlinebuf __P((FILE *)); -#endif - -/* declarations for functions defined in lib/sh/shaccess.c */ -extern int sh_eaccess __P((char *, int)); - -/* declarations for functions defined in lib/sh/shmatch.c */ -extern int sh_regmatch __P((const char *, const char *, int)); - -/* defines for flags argument to sh_regmatch. */ -#define SHMAT_SUBEXP 0x001 /* save subexpressions in SH_REMATCH */ -#define SHMAT_PWARN 0x002 /* print a warning message on invalid regexp */ - -/* declarations for functions defined in lib/sh/shmbchar.c */ -extern size_t mbstrlen __P((const char *)); -extern char *mbsmbchar __P((const char *)); - -/* declarations for functions defined in lib/sh/shquote.c */ -extern char *sh_single_quote __P((const char *)); -extern char *sh_double_quote __P((const char *)); -extern char *sh_mkdoublequoted __P((const char *, int, int)); -extern char *sh_un_double_quote __P((char *)); -extern char *sh_backslash_quote __P((char *, const char *)); -extern char *sh_backslash_quote_for_double_quotes __P((char *)); -extern int sh_contains_shell_metas __P((char *)); - -/* declarations for functions defined in lib/sh/spell.c */ -extern int spname __P((char *, char *)); -extern char *dirspell __P((char *)); - -/* declarations for functions defined in lib/sh/strcasecmp.c */ -#if !defined (HAVE_STRCASECMP) -extern int strncasecmp __P((const char *, const char *, int)); -extern int strcasecmp __P((const char *, const char *)); -#endif /* HAVE_STRCASECMP */ - -/* declarations for functions defined in lib/sh/strcasestr.c */ -#if ! HAVE_STRCASESTR -extern char *strcasestr __P((const char *, const char *)); -#endif - -/* declarations for functions defined in lib/sh/strchrnul.c */ -#if ! HAVE_STRCHRNUL -extern char *strchrnul __P((const char *, int)); -#endif - -/* declarations for functions defined in lib/sh/strerror.c */ -#if !defined (HAVE_STRERROR) && !defined (strerror) -extern char *strerror __P((int)); -#endif - -/* declarations for functions defined in lib/sh/strftime.c */ -#if !defined (HAVE_STRFTIME) && defined (NEED_STRFTIME_DECL) -extern size_t strftime __P((char *, size_t, const char *, const struct tm *)); -#endif - -/* declarations for functions and structures defined in lib/sh/stringlist.c */ - -/* This is a general-purpose argv-style array struct. */ -typedef struct _list_of_strings { - char **list; - int list_size; - int list_len; -} STRINGLIST; - -typedef int sh_strlist_map_func_t __P((char *)); - -extern STRINGLIST *strlist_create __P((int)); -extern STRINGLIST *strlist_resize __P((STRINGLIST *, int)); -extern void strlist_flush __P((STRINGLIST *)); -extern void strlist_dispose __P((STRINGLIST *)); -extern int strlist_remove __P((STRINGLIST *, char *)); -extern STRINGLIST *strlist_copy __P((STRINGLIST *)); -extern STRINGLIST *strlist_merge __P((STRINGLIST *, STRINGLIST *)); -extern STRINGLIST *strlist_append __P((STRINGLIST *, STRINGLIST *)); -extern STRINGLIST *strlist_prefix_suffix __P((STRINGLIST *, char *, char *)); -extern void strlist_print __P((STRINGLIST *, char *)); -extern void strlist_walk __P((STRINGLIST *, sh_strlist_map_func_t *)); -extern void strlist_sort __P((STRINGLIST *)); - -/* declarations for functions defined in lib/sh/stringvec.c */ - -extern char **strvec_create __P((int)); -extern char **strvec_resize __P((char **, int)); -extern void strvec_flush __P((char **)); -extern void strvec_dispose __P((char **)); -extern int strvec_remove __P((char **, char *)); -extern int strvec_len __P((char **)); -extern int strvec_search __P((char **, char *)); -extern char **strvec_copy __P((char **)); -extern int strvec_strcmp __P((char **, char **)); -extern void strvec_sort __P((char **)); - -extern char **strvec_from_word_list __P((WORD_LIST *, int, int, int *)); -extern WORD_LIST *strvec_to_word_list __P((char **, int, int)); - -/* declarations for functions defined in lib/sh/strnlen.c */ -#if !defined (HAVE_STRNLEN) -extern size_t strnlen __P((const char *, size_t)); -#endif - -/* declarations for functions defined in lib/sh/strpbrk.c */ -#if !defined (HAVE_STRPBRK) -extern char *strpbrk __P((const char *, const char *)); -#endif - -/* declarations for functions defined in lib/sh/strtod.c */ -#if !defined (HAVE_STRTOD) -extern double strtod __P((const char *, char **)); -#endif - -/* declarations for functions defined in lib/sh/strtol.c */ -#if !HAVE_DECL_STRTOL -extern long strtol __P((const char *, char **, int)); -#endif - -/* declarations for functions defined in lib/sh/strtoll.c */ -#if defined (HAVE_LONG_LONG) && !HAVE_DECL_STRTOLL -extern long long strtoll __P((const char *, char **, int)); -#endif - -/* declarations for functions defined in lib/sh/strtoul.c */ -#if !HAVE_DECL_STRTOUL -extern unsigned long strtoul __P((const char *, char **, int)); -#endif - -/* declarations for functions defined in lib/sh/strtoull.c */ -#if defined (HAVE_LONG_LONG) && !HAVE_DECL_STRTOULL -extern unsigned long long strtoull __P((const char *, char **, int)); -#endif - -/* declarations for functions defined in lib/sh/strimax.c */ -#if !HAVE_DECL_STRTOIMAX -extern intmax_t strtoimax __P((const char *, char **, int)); -#endif - -/* declarations for functions defined in lib/sh/strumax.c */ -#if !HAVE_DECL_STRTOUMAX -extern uintmax_t strtoumax __P((const char *, char **, int)); -#endif - -/* declarations for functions defined in lib/sh/strtrans.c */ -extern char *ansicstr __P((char *, int, int, int *, int *)); -extern char *ansic_quote __P((char *, int, int *)); -extern int ansic_shouldquote __P((const char *)); -extern char *ansiexpand __P((char *, int, int, int *)); - -/* declarations for functions defined in lib/sh/timeval.c. No prototypes - so we don't have to count on having a definition of struct timeval in - scope when this file is included. */ -extern void timeval_to_secs (); -extern void print_timeval (); - -/* declarations for functions defined in lib/sh/tmpfile.c */ -#define MT_USETMPDIR 0x0001 -#define MT_READWRITE 0x0002 -#define MT_USERANDOM 0x0004 - -extern char *sh_mktmpname __P((char *, int)); -extern int sh_mktmpfd __P((char *, int, char **)); -/* extern FILE *sh_mktmpfp __P((char *, int, char **)); */ - -/* declarations for functions defined in lib/sh/uconvert.c */ -extern int uconvert __P((char *, long *, long *)); - -/* declarations for functions defined in lib/sh/ufuncs.c */ -extern unsigned int falarm __P((unsigned int, unsigned int)); -extern unsigned int fsleep __P((unsigned int, unsigned int)); - -/* declarations for functions defined in lib/sh/unicode.c */ -extern int u32cconv __P((unsigned long, char *)); - -/* declarations for functions defined in lib/sh/winsize.c */ -extern void get_new_window_size __P((int, int *, int *)); - -/* declarations for functions defined in lib/sh/zcatfd.c */ -extern int zcatfd __P((int, int, char *)); - -/* declarations for functions defined in lib/sh/zgetline.c */ -extern ssize_t zgetline __P((int, char **, size_t *, int)); - -/* declarations for functions defined in lib/sh/zmapfd.c */ -extern int zmapfd __P((int, char **, char *)); - -/* declarations for functions defined in lib/sh/zread.c */ -extern ssize_t zread __P((int, char *, size_t)); -extern ssize_t zreadretry __P((int, char *, size_t)); -extern ssize_t zreadintr __P((int, char *, size_t)); -extern ssize_t zreadc __P((int, char *)); -extern ssize_t zreadcintr __P((int, char *)); -extern void zreset __P((void)); -extern void zsyncfd __P((int)); - -/* declarations for functions defined in lib/sh/zwrite.c */ -extern int zwrite __P((int, char *, size_t)); - -/* declarations for functions defined in lib/glob/gmisc.c */ -extern int match_pattern_char __P((char *, char *)); -extern int umatchlen __P((char *, size_t)); - -#if defined (HANDLE_MULTIBYTE) -extern int match_pattern_wchar __P((wchar_t *, wchar_t *)); -extern int wmatchlen __P((wchar_t *, size_t)); -#endif - -#endif /* _EXTERNS_H_ */ diff --git a/lib/readline/bind.c~ b/lib/readline/bind.c~ deleted file mode 100644 index 9fbd7adca..000000000 --- a/lib/readline/bind.c~ +++ /dev/null @@ -1,2471 +0,0 @@ -/* bind.c -- key binding and startup file support for the readline library. */ - -/* Copyright (C) 1987-2012 Free Software Foundation, Inc. - - This file is part of the GNU Readline Library (Readline), a library - for reading lines of text with interactive input and history editing. - - Readline is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Readline is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Readline. If not, see . -*/ - -#define READLINE_LIBRARY - -#if defined (__TANDEM) -# include -#endif - -#if defined (HAVE_CONFIG_H) -# include -#endif - -#include -#include -#include -#if defined (HAVE_SYS_FILE_H) -# include -#endif /* HAVE_SYS_FILE_H */ - -#if defined (HAVE_UNISTD_H) -# include -#endif /* HAVE_UNISTD_H */ - -#if defined (HAVE_STDLIB_H) -# include -#else -# include "ansi_stdlib.h" -#endif /* HAVE_STDLIB_H */ - -#include - -#if !defined (errno) -extern int errno; -#endif /* !errno */ - -#include "posixstat.h" - -/* System-specific feature definitions and include files. */ -#include "rldefs.h" - -/* Some standard library routines. */ -#include "readline.h" -#include "history.h" - -#include "rlprivate.h" -#include "rlshell.h" -#include "xmalloc.h" - -#if !defined (strchr) && !defined (__STDC__) -extern char *strchr (), *strrchr (); -#endif /* !strchr && !__STDC__ */ - -/* Variables exported by this file. */ -Keymap rl_binding_keymap; - -static int _rl_skip_to_delim PARAMS((char *, int, int)); - -static char *_rl_read_file PARAMS((char *, size_t *)); -static void _rl_init_file_error PARAMS((const char *)); -static int _rl_read_init_file PARAMS((const char *, int)); -static int glean_key_from_name PARAMS((char *)); - -static int find_boolean_var PARAMS((const char *)); -static int find_string_var PARAMS((const char *)); - -static char *_rl_get_string_variable_value PARAMS((const char *)); -static int substring_member_of_array PARAMS((const char *, const char * const *)); - -static int currently_reading_init_file; - -/* used only in this file */ -static int _rl_prefer_visible_bell = 1; - -/* **************************************************************** */ -/* */ -/* Binding keys */ -/* */ -/* **************************************************************** */ - -/* rl_add_defun (char *name, rl_command_func_t *function, int key) - Add NAME to the list of named functions. Make FUNCTION be the function - that gets called. If KEY is not -1, then bind it. */ -int -rl_add_defun (name, function, key) - const char *name; - rl_command_func_t *function; - int key; -{ - if (key != -1) - rl_bind_key (key, function); - rl_add_funmap_entry (name, function); - return 0; -} - -/* Bind KEY to FUNCTION. Returns non-zero if KEY is out of range. */ -int -rl_bind_key (key, function) - int key; - rl_command_func_t *function; -{ - if (key < 0) - return (key); - - if (META_CHAR (key) && _rl_convert_meta_chars_to_ascii) - { - if (_rl_keymap[ESC].type == ISKMAP) - { - Keymap escmap; - - escmap = FUNCTION_TO_KEYMAP (_rl_keymap, ESC); - key = UNMETA (key); - escmap[key].type = ISFUNC; - escmap[key].function = function; - return (0); - } - return (key); - } - - _rl_keymap[key].type = ISFUNC; - _rl_keymap[key].function = function; - rl_binding_keymap = _rl_keymap; - return (0); -} - -/* Bind KEY to FUNCTION in MAP. Returns non-zero in case of invalid - KEY. */ -int -rl_bind_key_in_map (key, function, map) - int key; - rl_command_func_t *function; - Keymap map; -{ - int result; - Keymap oldmap; - - oldmap = _rl_keymap; - _rl_keymap = map; - result = rl_bind_key (key, function); - _rl_keymap = oldmap; - return (result); -} - -/* Bind key sequence KEYSEQ to DEFAULT_FUNC if KEYSEQ is unbound. Right - now, this is always used to attempt to bind the arrow keys, hence the - check for rl_vi_movement_mode. */ -int -rl_bind_key_if_unbound_in_map (key, default_func, kmap) - int key; - rl_command_func_t *default_func; - Keymap kmap; -{ - char keyseq[2]; - - keyseq[0] = (unsigned char)key; - keyseq[1] = '\0'; - return (rl_bind_keyseq_if_unbound_in_map (keyseq, default_func, kmap)); -} - -int -rl_bind_key_if_unbound (key, default_func) - int key; - rl_command_func_t *default_func; -{ - char keyseq[2]; - - keyseq[0] = (unsigned char)key; - keyseq[1] = '\0'; - return (rl_bind_keyseq_if_unbound_in_map (keyseq, default_func, _rl_keymap)); -} - -/* Make KEY do nothing in the currently selected keymap. - Returns non-zero in case of error. */ -int -rl_unbind_key (key) - int key; -{ - return (rl_bind_key (key, (rl_command_func_t *)NULL)); -} - -/* Make KEY do nothing in MAP. - Returns non-zero in case of error. */ -int -rl_unbind_key_in_map (key, map) - int key; - Keymap map; -{ - return (rl_bind_key_in_map (key, (rl_command_func_t *)NULL, map)); -} - -/* Unbind all keys bound to FUNCTION in MAP. */ -int -rl_unbind_function_in_map (func, map) - rl_command_func_t *func; - Keymap map; -{ - register int i, rval; - - for (i = rval = 0; i < KEYMAP_SIZE; i++) - { - if (map[i].type == ISFUNC && map[i].function == func) - { - map[i].function = (rl_command_func_t *)NULL; - rval = 1; - } - } - return rval; -} - -int -rl_unbind_command_in_map (command, map) - const char *command; - Keymap map; -{ - rl_command_func_t *func; - - func = rl_named_function (command); - if (func == 0) - return 0; - return (rl_unbind_function_in_map (func, map)); -} - -/* Bind the key sequence represented by the string KEYSEQ to - FUNCTION, starting in the current keymap. This makes new - keymaps as necessary. */ -int -rl_bind_keyseq (keyseq, function) - const char *keyseq; - rl_command_func_t *function; -{ - return (rl_generic_bind (ISFUNC, keyseq, (char *)function, _rl_keymap)); -} - -/* Bind the key sequence represented by the string KEYSEQ to - FUNCTION. This makes new keymaps as necessary. The initial - place to do bindings is in MAP. */ -int -rl_bind_keyseq_in_map (keyseq, function, map) - const char *keyseq; - rl_command_func_t *function; - Keymap map; -{ - return (rl_generic_bind (ISFUNC, keyseq, (char *)function, map)); -} - -/* Backwards compatibility; equivalent to rl_bind_keyseq_in_map() */ -int -rl_set_key (keyseq, function, map) - const char *keyseq; - rl_command_func_t *function; - Keymap map; -{ - return (rl_generic_bind (ISFUNC, keyseq, (char *)function, map)); -} - -/* Bind key sequence KEYSEQ to DEFAULT_FUNC if KEYSEQ is unbound. Right - now, this is always used to attempt to bind the arrow keys, hence the - check for rl_vi_movement_mode. */ -int -rl_bind_keyseq_if_unbound_in_map (keyseq, default_func, kmap) - const char *keyseq; - rl_command_func_t *default_func; - Keymap kmap; -{ - rl_command_func_t *func; - - if (keyseq) - { - func = rl_function_of_keyseq (keyseq, kmap, (int *)NULL); -#if defined (VI_MODE) - if (!func || func == rl_do_lowercase_version || func == rl_vi_movement_mode) -#else - if (!func || func == rl_do_lowercase_version) -#endif - return (rl_bind_keyseq_in_map (keyseq, default_func, kmap)); - else - return 1; - } - return 0; -} - -int -rl_bind_keyseq_if_unbound (keyseq, default_func) - const char *keyseq; - rl_command_func_t *default_func; -{ - return (rl_bind_keyseq_if_unbound_in_map (keyseq, default_func, _rl_keymap)); -} - -/* Bind the key sequence represented by the string KEYSEQ to - the string of characters MACRO. This makes new keymaps as - necessary. The initial place to do bindings is in MAP. */ -int -rl_macro_bind (keyseq, macro, map) - const char *keyseq, *macro; - Keymap map; -{ - char *macro_keys; - int macro_keys_len; - - macro_keys = (char *)xmalloc ((2 * strlen (macro)) + 1); - - if (rl_translate_keyseq (macro, macro_keys, ¯o_keys_len)) - { - xfree (macro_keys); - return -1; - } - rl_generic_bind (ISMACR, keyseq, macro_keys, map); - return 0; -} - -/* Bind the key sequence represented by the string KEYSEQ to - the arbitrary pointer DATA. TYPE says what kind of data is - pointed to by DATA, right now this can be a function (ISFUNC), - a macro (ISMACR), or a keymap (ISKMAP). This makes new keymaps - as necessary. The initial place to do bindings is in MAP. */ -int -rl_generic_bind (type, keyseq, data, map) - int type; - const char *keyseq; - char *data; - Keymap map; -{ - char *keys; - int keys_len; - register int i; - KEYMAP_ENTRY k; - - k.function = 0; - - /* If no keys to bind to, exit right away. */ - if (keyseq == 0 || *keyseq == 0) - { - if (type == ISMACR) - xfree (data); - return -1; - } - - keys = (char *)xmalloc (1 + (2 * strlen (keyseq))); - - /* Translate the ASCII representation of KEYSEQ into an array of - characters. Stuff the characters into KEYS, and the length of - KEYS into KEYS_LEN. */ - if (rl_translate_keyseq (keyseq, keys, &keys_len)) - { - xfree (keys); - return -1; - } - - /* Bind keys, making new keymaps as necessary. */ - for (i = 0; i < keys_len; i++) - { - unsigned char uc = keys[i]; - int ic; - - ic = uc; - if (ic < 0 || ic >= KEYMAP_SIZE) - { - xfree (keys); - return -1; - } - - if (META_CHAR (ic) && _rl_convert_meta_chars_to_ascii) - { - ic = UNMETA (ic); - if (map[ESC].type == ISKMAP) - map = FUNCTION_TO_KEYMAP (map, ESC); - } - - if ((i + 1) < keys_len) - { - if (map[ic].type != ISKMAP) - { - /* We allow subsequences of keys. If a keymap is being - created that will `shadow' an existing function or macro - key binding, we save that keybinding into the ANYOTHERKEY - index in the new map. The dispatch code will look there - to find the function to execute if the subsequence is not - matched. ANYOTHERKEY was chosen to be greater than - UCHAR_MAX. */ - k = map[ic]; - - map[ic].type = ISKMAP; - map[ic].function = KEYMAP_TO_FUNCTION (rl_make_bare_keymap()); - } - map = FUNCTION_TO_KEYMAP (map, ic); - /* The dispatch code will return this function if no matching - key sequence is found in the keymap. This (with a little - help from the dispatch code in readline.c) allows `a' to be - mapped to something, `abc' to be mapped to something else, - and the function bound to `a' to be executed when the user - types `abx', leaving `bx' in the input queue. */ - if (k.function && ((k.type == ISFUNC && k.function != rl_do_lowercase_version) || k.type == ISMACR)) - { - map[ANYOTHERKEY] = k; - k.function = 0; - } - } - else - { - if (map[ic].type == ISMACR) - xfree ((char *)map[ic].function); - else if (map[ic].type == ISKMAP) - { - map = FUNCTION_TO_KEYMAP (map, ic); - ic = ANYOTHERKEY; - /* If we're trying to override a keymap with a null function - (e.g., trying to unbind it), we can't use a null pointer - here because that's indistinguishable from having not been - overridden. We use a special bindable function that does - nothing. */ - if (type == ISFUNC && data == 0) - data = (char *)_rl_null_function; - } - - map[ic].function = KEYMAP_TO_FUNCTION (data); - map[ic].type = type; - } - - rl_binding_keymap = map; - } - xfree (keys); - return 0; -} - -/* Translate the ASCII representation of SEQ, stuffing the values into ARRAY, - an array of characters. LEN gets the final length of ARRAY. Return - non-zero if there was an error parsing SEQ. */ -int -rl_translate_keyseq (seq, array, len) - const char *seq; - char *array; - int *len; -{ - register int i, c, l, temp; - - for (i = l = 0; c = seq[i]; i++) - { - if (c == '\\') - { - c = seq[++i]; - - if (c == 0) - break; - - /* Handle \C- and \M- prefixes. */ - if ((c == 'C' || c == 'M') && seq[i + 1] == '-') - { - /* Handle special case of backwards define. */ - if (strncmp (&seq[i], "C-\\M-", 5) == 0) - { - array[l++] = ESC; /* ESC is meta-prefix */ - i += 5; - array[l++] = CTRL (_rl_to_upper (seq[i])); - if (seq[i] == '\0') - i--; - } - else if (c == 'M') - { - i++; /* seq[i] == '-' */ - /* XXX - obey convert-meta setting */ - if (_rl_convert_meta_chars_to_ascii && _rl_keymap[ESC].type == ISKMAP) - array[l++] = ESC; /* ESC is meta-prefix */ - else if (seq[i+1] == '\\' && seq[i+2] == 'C' && seq[i+3] == '-') - { - i += 4; - temp = (seq[i] == '?') ? RUBOUT : CTRL (_rl_to_upper (seq[i])); - array[l++] = META (temp); - } - else - { - /* This doesn't yet handle things like \M-\a, which may - or may not have any reasonable meaning. You're - probably better off using straight octal or hex. */ - i++; - array[l++] = META (seq[i]); - } - } - else if (c == 'C') - { - i += 2; - /* Special hack for C-?... */ - array[l++] = (seq[i] == '?') ? RUBOUT : CTRL (_rl_to_upper (seq[i])); - } - continue; - } - - /* Translate other backslash-escaped characters. These are the - same escape sequences that bash's `echo' and `printf' builtins - handle, with the addition of \d -> RUBOUT. A backslash - preceding a character that is not special is stripped. */ - switch (c) - { - case 'a': - array[l++] = '\007'; - break; - case 'b': - array[l++] = '\b'; - break; - case 'd': - array[l++] = RUBOUT; /* readline-specific */ - break; - case 'e': - array[l++] = ESC; - break; - case 'f': - array[l++] = '\f'; - break; - case 'n': - array[l++] = NEWLINE; - break; - case 'r': - array[l++] = RETURN; - break; - case 't': - array[l++] = TAB; - break; - case 'v': - array[l++] = 0x0B; - break; - case '\\': - array[l++] = '\\'; - break; - case '0': case '1': case '2': case '3': - case '4': case '5': case '6': case '7': - i++; - for (temp = 2, c -= '0'; ISOCTAL (seq[i]) && temp--; i++) - c = (c * 8) + OCTVALUE (seq[i]); - i--; /* auto-increment in for loop */ - array[l++] = c & largest_char; - break; - case 'x': - i++; - for (temp = 2, c = 0; ISXDIGIT ((unsigned char)seq[i]) && temp--; i++) - c = (c * 16) + HEXVALUE (seq[i]); - if (temp == 2) - c = 'x'; - i--; /* auto-increment in for loop */ - array[l++] = c & largest_char; - break; - default: /* backslashes before non-special chars just add the char */ - array[l++] = c; - break; /* the backslash is stripped */ - } - continue; - } - - array[l++] = c; - } - - *len = l; - array[l] = '\0'; - return (0); -} - -static int -_rl_isescape (c) - int c; -{ - switch (c) - { - case '\007': - case '\b': - case '\f': - case '\n': - case '\r': - case TAB: - case 0x0b: return (1); - default: return (0); - } -} - -static int -_rl_escchar (c) - int c; -{ - switch (c) - { - case '\007': return ('a'); - case '\b': return ('b'); - case '\f': return ('f'); - case '\n': return ('n'); - case '\r': return ('r'); - case TAB: return ('t'); - case 0x0b: return ('v'); - default: return (c); - } -} - -char * -rl_untranslate_keyseq (seq) - int seq; -{ - static char kseq[16]; - int i, c; - - i = 0; - c = seq; - if (META_CHAR (c)) - { - kseq[i++] = '\\'; - kseq[i++] = 'M'; - kseq[i++] = '-'; - c = UNMETA (c); - } - else if (c == ESC) - { - kseq[i++] = '\\'; - c = 'e'; - } - else if (CTRL_CHAR (c)) - { - kseq[i++] = '\\'; - kseq[i++] = 'C'; - kseq[i++] = '-'; - c = _rl_to_lower (UNCTRL (c)); - } - else if (c == RUBOUT) - { - kseq[i++] = '\\'; - kseq[i++] = 'C'; - kseq[i++] = '-'; - c = '?'; - } - - if (c == ESC) - { - kseq[i++] = '\\'; - c = 'e'; - } - else if (c == '\\' || c == '"') - { - kseq[i++] = '\\'; - } - - kseq[i++] = (unsigned char) c; - kseq[i] = '\0'; - return kseq; -} - -char * -_rl_untranslate_macro_value (seq, use_escapes) - char *seq; - int use_escapes; -{ - char *ret, *r, *s; - int c; - - r = ret = (char *)xmalloc (7 * strlen (seq) + 1); - for (s = seq; *s; s++) - { - c = *s; - if (META_CHAR (c)) - { - *r++ = '\\'; - *r++ = 'M'; - *r++ = '-'; - c = UNMETA (c); - } - else if (c == ESC) - { - *r++ = '\\'; - c = 'e'; - } - else if (CTRL_CHAR (c)) - { - *r++ = '\\'; - if (use_escapes && _rl_isescape (c)) - c = _rl_escchar (c); - else - { - *r++ = 'C'; - *r++ = '-'; - c = _rl_to_lower (UNCTRL (c)); - } - } - else if (c == RUBOUT) - { - *r++ = '\\'; - *r++ = 'C'; - *r++ = '-'; - c = '?'; - } - - if (c == ESC) - { - *r++ = '\\'; - c = 'e'; - } - else if (c == '\\' || c == '"') - *r++ = '\\'; - - *r++ = (unsigned char)c; - } - *r = '\0'; - return ret; -} - -/* Return a pointer to the function that STRING represents. - If STRING doesn't have a matching function, then a NULL pointer - is returned. */ -rl_command_func_t * -rl_named_function (string) - const char *string; -{ - register int i; - - rl_initialize_funmap (); - - for (i = 0; funmap[i]; i++) - if (_rl_stricmp (funmap[i]->name, string) == 0) - return (funmap[i]->function); - return ((rl_command_func_t *)NULL); -} - -/* Return the function (or macro) definition which would be invoked via - KEYSEQ if executed in MAP. If MAP is NULL, then the current keymap is - used. TYPE, if non-NULL, is a pointer to an int which will receive the - type of the object pointed to. One of ISFUNC (function), ISKMAP (keymap), - or ISMACR (macro). */ -rl_command_func_t * -rl_function_of_keyseq (keyseq, map, type) - const char *keyseq; - Keymap map; - int *type; -{ - register int i; - - if (map == 0) - map = _rl_keymap; - - for (i = 0; keyseq && keyseq[i]; i++) - { - unsigned char ic = keyseq[i]; - - if (META_CHAR (ic) && _rl_convert_meta_chars_to_ascii) - { - if (map[ESC].type == ISKMAP) - { - map = FUNCTION_TO_KEYMAP (map, ESC); - ic = UNMETA (ic); - } - /* XXX - should we just return NULL here, since this obviously - doesn't match? */ - else - { - if (type) - *type = map[ESC].type; - - return (map[ESC].function); - } - } - - if (map[ic].type == ISKMAP) - { - /* If this is the last key in the key sequence, return the - map. */ - if (keyseq[i + 1] == '\0') - { - if (type) - *type = ISKMAP; - - return (map[ic].function); - } - else - map = FUNCTION_TO_KEYMAP (map, ic); - } - /* If we're not at the end of the key sequence, and the current key - is bound to something other than a keymap, then the entire key - sequence is not bound. */ - else if (map[ic].type != ISKMAP && keyseq[i+1]) - return ((rl_command_func_t *)NULL); - else /* map[ic].type != ISKMAP && keyseq[i+1] == 0 */ - { - if (type) - *type = map[ic].type; - - return (map[ic].function); - } - } - return ((rl_command_func_t *) NULL); -} - -/* The last key bindings file read. */ -static char *last_readline_init_file = (char *)NULL; - -/* The file we're currently reading key bindings from. */ -static const char *current_readline_init_file; -static int current_readline_init_include_level; -static int current_readline_init_lineno; - -/* Read FILENAME into a locally-allocated buffer and return the buffer. - The size of the buffer is returned in *SIZEP. Returns NULL if any - errors were encountered. */ -static char * -_rl_read_file (filename, sizep) - char *filename; - size_t *sizep; -{ - struct stat finfo; - size_t file_size; - char *buffer; - int i, file; - - if ((stat (filename, &finfo) < 0) || (file = open (filename, O_RDONLY, 0666)) < 0) - return ((char *)NULL); - - file_size = (size_t)finfo.st_size; - - /* check for overflow on very large files */ - if (file_size != finfo.st_size || file_size + 1 < file_size) - { - if (file >= 0) - close (file); -#if defined (EFBIG) - errno = EFBIG; -#endif - return ((char *)NULL); - } - - /* Read the file into BUFFER. */ - buffer = (char *)xmalloc (file_size + 1); - i = read (file, buffer, file_size); - close (file); - - if (i < 0) - { - xfree (buffer); - return ((char *)NULL); - } - - RL_CHECK_SIGNALS (); - - buffer[i] = '\0'; - if (sizep) - *sizep = i; - - return (buffer); -} - -/* Re-read the current keybindings file. */ -int -rl_re_read_init_file (count, ignore) - int count, ignore; -{ - int r; - r = rl_read_init_file ((const char *)NULL); - rl_set_keymap_from_edit_mode (); - return r; -} - -/* Do key bindings from a file. If FILENAME is NULL it defaults - to the first non-null filename from this list: - 1. the filename used for the previous call - 2. the value of the shell variable `INPUTRC' - 3. ~/.inputrc - 4. /etc/inputrc - If the file existed and could be opened and read, 0 is returned, - otherwise errno is returned. */ -int -rl_read_init_file (filename) - const char *filename; -{ - /* Default the filename. */ - if (filename == 0) - filename = last_readline_init_file; - if (filename == 0) - filename = sh_get_env_value ("INPUTRC"); - if (filename == 0 || *filename == 0) - { - filename = DEFAULT_INPUTRC; - /* Try to read DEFAULT_INPUTRC; fall back to SYS_INPUTRC on failure */ - if (_rl_read_init_file (filename, 0) == 0) - return 0; - filename = SYS_INPUTRC; - } - -#if defined (__MSDOS__) - if (_rl_read_init_file (filename, 0) == 0) - return 0; - filename = "~/_inputrc"; -#endif - return (_rl_read_init_file (filename, 0)); -} - -static int -_rl_read_init_file (filename, include_level) - const char *filename; - int include_level; -{ - register int i; - char *buffer, *openname, *line, *end; - size_t file_size; - - current_readline_init_file = filename; - current_readline_init_include_level = include_level; - - openname = tilde_expand (filename); - buffer = _rl_read_file (openname, &file_size); - xfree (openname); - - RL_CHECK_SIGNALS (); - if (buffer == 0) - return (errno); - - if (include_level == 0 && filename != last_readline_init_file) - { - FREE (last_readline_init_file); - last_readline_init_file = savestring (filename); - } - - currently_reading_init_file = 1; - - /* Loop over the lines in the file. Lines that start with `#' are - comments; all other lines are commands for readline initialization. */ - current_readline_init_lineno = 1; - line = buffer; - end = buffer + file_size; - while (line < end) - { - /* Find the end of this line. */ - for (i = 0; line + i != end && line[i] != '\n'; i++); - -#if defined (__CYGWIN__) - /* ``Be liberal in what you accept.'' */ - if (line[i] == '\n' && line[i-1] == '\r') - line[i - 1] = '\0'; -#endif - - /* Mark end of line. */ - line[i] = '\0'; - - /* Skip leading whitespace. */ - while (*line && whitespace (*line)) - { - line++; - i--; - } - - /* If the line is not a comment, then parse it. */ - if (*line && *line != '#') - rl_parse_and_bind (line); - - /* Move to the next line. */ - line += i + 1; - current_readline_init_lineno++; - } - - xfree (buffer); - currently_reading_init_file = 0; - return (0); -} - -static void -_rl_init_file_error (msg) - const char *msg; -{ - if (currently_reading_init_file) - _rl_errmsg ("%s: line %d: %s\n", current_readline_init_file, - current_readline_init_lineno, msg); - else - _rl_errmsg ("%s", msg); -} - -/* **************************************************************** */ -/* */ -/* Parser Directives */ -/* */ -/* **************************************************************** */ - -typedef int _rl_parser_func_t PARAMS((char *)); - -/* Things that mean `Control'. */ -const char * const _rl_possible_control_prefixes[] = { - "Control-", "C-", "CTRL-", (const char *)NULL -}; - -const char * const _rl_possible_meta_prefixes[] = { - "Meta", "M-", (const char *)NULL -}; - -/* Conditionals. */ - -/* Calling programs set this to have their argv[0]. */ -const char *rl_readline_name = "other"; - -/* Stack of previous values of parsing_conditionalized_out. */ -static unsigned char *if_stack = (unsigned char *)NULL; -static int if_stack_depth; -static int if_stack_size; - -/* Push _rl_parsing_conditionalized_out, and set parser state based - on ARGS. */ -static int -parser_if (args) - char *args; -{ - register int i; - - /* Push parser state. */ - if (if_stack_depth + 1 >= if_stack_size) - { - if (!if_stack) - if_stack = (unsigned char *)xmalloc (if_stack_size = 20); - else - if_stack = (unsigned char *)xrealloc (if_stack, if_stack_size += 20); - } - if_stack[if_stack_depth++] = _rl_parsing_conditionalized_out; - - /* If parsing is turned off, then nothing can turn it back on except - for finding the matching endif. In that case, return right now. */ - if (_rl_parsing_conditionalized_out) - return 0; - - /* Isolate first argument. */ - for (i = 0; args[i] && !whitespace (args[i]); i++); - - if (args[i]) - args[i++] = '\0'; - - /* Handle "$if term=foo" and "$if mode=emacs" constructs. If this - isn't term=foo, or mode=emacs, then check to see if the first - word in ARGS is the same as the value stored in rl_readline_name. */ - if (rl_terminal_name && _rl_strnicmp (args, "term=", 5) == 0) - { - char *tem, *tname; - - /* Terminals like "aaa-60" are equivalent to "aaa". */ - tname = savestring (rl_terminal_name); - tem = strchr (tname, '-'); - if (tem) - *tem = '\0'; - - /* Test the `long' and `short' forms of the terminal name so that - if someone has a `sun-cmd' and does not want to have bindings - that will be executed if the terminal is a `sun', they can put - `$if term=sun-cmd' into their .inputrc. */ - _rl_parsing_conditionalized_out = _rl_stricmp (args + 5, tname) && - _rl_stricmp (args + 5, rl_terminal_name); - xfree (tname); - } -#if defined (VI_MODE) - else if (_rl_strnicmp (args, "mode=", 5) == 0) - { - int mode; - - if (_rl_stricmp (args + 5, "emacs") == 0) - mode = emacs_mode; - else if (_rl_stricmp (args + 5, "vi") == 0) - mode = vi_mode; - else - mode = no_mode; - - _rl_parsing_conditionalized_out = mode != rl_editing_mode; - } -#endif /* VI_MODE */ - /* Check to see if the first word in ARGS is the same as the - value stored in rl_readline_name. */ - else if (_rl_stricmp (args, rl_readline_name) == 0) - _rl_parsing_conditionalized_out = 0; - else - _rl_parsing_conditionalized_out = 1; - return 0; -} - -/* Invert the current parser state if there is anything on the stack. */ -static int -parser_else (args) - char *args; -{ - register int i; - - if (if_stack_depth == 0) - { - _rl_init_file_error ("$else found without matching $if"); - return 0; - } - -#if 0 - /* Check the previous (n - 1) levels of the stack to make sure that - we haven't previously turned off parsing. */ - for (i = 0; i < if_stack_depth - 1; i++) -#else - /* Check the previous (n) levels of the stack to make sure that - we haven't previously turned off parsing. */ - for (i = 0; i < if_stack_depth; i++) -#endif - if (if_stack[i] == 1) - return 0; - - /* Invert the state of parsing if at top level. */ - _rl_parsing_conditionalized_out = !_rl_parsing_conditionalized_out; - return 0; -} - -/* Terminate a conditional, popping the value of - _rl_parsing_conditionalized_out from the stack. */ -static int -parser_endif (args) - char *args; -{ - if (if_stack_depth) - _rl_parsing_conditionalized_out = if_stack[--if_stack_depth]; - else - _rl_init_file_error ("$endif without matching $if"); - return 0; -} - -static int -parser_include (args) - char *args; -{ - const char *old_init_file; - char *e; - int old_line_number, old_include_level, r; - - if (_rl_parsing_conditionalized_out) - return (0); - - old_init_file = current_readline_init_file; - old_line_number = current_readline_init_lineno; - old_include_level = current_readline_init_include_level; - - e = strchr (args, '\n'); - if (e) - *e = '\0'; - r = _rl_read_init_file ((const char *)args, old_include_level + 1); - - current_readline_init_file = old_init_file; - current_readline_init_lineno = old_line_number; - current_readline_init_include_level = old_include_level; - - return r; -} - -/* Associate textual names with actual functions. */ -static const struct { - const char * const name; - _rl_parser_func_t *function; -} parser_directives [] = { - { "if", parser_if }, - { "endif", parser_endif }, - { "else", parser_else }, - { "include", parser_include }, - { (char *)0x0, (_rl_parser_func_t *)0x0 } -}; - -/* Handle a parser directive. STATEMENT is the line of the directive - without any leading `$'. */ -static int -handle_parser_directive (statement) - char *statement; -{ - register int i; - char *directive, *args; - - /* Isolate the actual directive. */ - - /* Skip whitespace. */ - for (i = 0; whitespace (statement[i]); i++); - - directive = &statement[i]; - - for (; statement[i] && !whitespace (statement[i]); i++); - - if (statement[i]) - statement[i++] = '\0'; - - for (; statement[i] && whitespace (statement[i]); i++); - - args = &statement[i]; - - /* Lookup the command, and act on it. */ - for (i = 0; parser_directives[i].name; i++) - if (_rl_stricmp (directive, parser_directives[i].name) == 0) - { - (*parser_directives[i].function) (args); - return (0); - } - - /* display an error message about the unknown parser directive */ - _rl_init_file_error ("unknown parser directive"); - return (1); -} - -/* Start at STRING[START] and look for DELIM. Return I where STRING[I] == - DELIM or STRING[I] == 0. DELIM is usually a double quote. */ -static int -_rl_skip_to_delim (string, start, delim) - char *string; - int start, delim; -{ - int i, c, passc; - - for (i = start,passc = 0; c = string[i]; i++) - { - if (passc) - { - passc = 0; - if (c == 0) - break; - continue; - } - - if (c == '\\') - { - passc = 1; - continue; - } - - if (c == delim) - break; - } - - return i; -} - -/* Read the binding command from STRING and perform it. - A key binding command looks like: Keyname: function-name\0, - a variable binding command looks like: set variable value. - A new-style keybinding looks like "\C-x\C-x": exchange-point-and-mark. */ -int -rl_parse_and_bind (string) - char *string; -{ - char *funname, *kname; - register int c, i; - int key, equivalency; - - while (string && whitespace (*string)) - string++; - - if (string == 0 || *string == 0 || *string == '#') - return 0; - - /* If this is a parser directive, act on it. */ - if (*string == '$') - { - handle_parser_directive (&string[1]); - return 0; - } - - /* If we aren't supposed to be parsing right now, then we're done. */ - if (_rl_parsing_conditionalized_out) - return 0; - - i = 0; - /* If this keyname is a complex key expression surrounded by quotes, - advance to after the matching close quote. This code allows the - backslash to quote characters in the key expression. */ - if (*string == '"') - { - i = _rl_skip_to_delim (string, 1, '"'); - - /* If we didn't find a closing quote, abort the line. */ - if (string[i] == '\0') - { - _rl_init_file_error ("no closing `\"' in key binding"); - return 1; - } - else - i++; /* skip past closing double quote */ - } - - /* Advance to the colon (:) or whitespace which separates the two objects. */ - for (; (c = string[i]) && c != ':' && c != ' ' && c != '\t'; i++ ); - - equivalency = (c == ':' && string[i + 1] == '='); - - /* Mark the end of the command (or keyname). */ - if (string[i]) - string[i++] = '\0'; - - /* If doing assignment, skip the '=' sign as well. */ - if (equivalency) - string[i++] = '\0'; - - /* If this is a command to set a variable, then do that. */ - if (_rl_stricmp (string, "set") == 0) - { - char *var, *value, *e; - int s; - - var = string + i; - /* Make VAR point to start of variable name. */ - while (*var && whitespace (*var)) var++; - - /* Make VALUE point to start of value string. */ - value = var; - while (*value && whitespace (*value) == 0) value++; - if (*value) - *value++ = '\0'; - while (*value && whitespace (*value)) value++; - - /* Strip trailing whitespace from values of boolean variables. */ - if (find_boolean_var (var) >= 0) - { - /* remove trailing whitespace */ -remove_trailing: - e = value + strlen (value) - 1; - while (e >= value && whitespace (*e)) - e--; - e++; /* skip back to whitespace or EOS */ - - if (*e && e >= value) - *e = '\0'; - } - else if ((i = find_string_var (var)) >= 0) - { - /* Allow quoted strings in variable values */ - if (*value == '"') - { - i = _rl_skip_to_delim (value, 1, *value); - value[i] = '\0'; - } - else - goto remove_trailing; - } - - rl_variable_bind (var, value); - return 0; - } - - /* Skip any whitespace between keyname and funname. */ - for (; string[i] && whitespace (string[i]); i++); - funname = &string[i]; - - /* Now isolate funname. - For straight function names just look for whitespace, since - that will signify the end of the string. But this could be a - macro definition. In that case, the string is quoted, so skip - to the matching delimiter. We allow the backslash to quote the - delimiter characters in the macro body. */ - /* This code exists to allow whitespace in macro expansions, which - would otherwise be gobbled up by the next `for' loop.*/ - /* XXX - it may be desirable to allow backslash quoting only if " is - the quoted string delimiter, like the shell. */ - if (*funname == '\'' || *funname == '"') - { - i = _rl_skip_to_delim (string, i+1, *funname); - if (string[i]) - i++; - } - - /* Advance to the end of the string. */ - for (; string[i] && whitespace (string[i]) == 0; i++); - - /* No extra whitespace at the end of the string. */ - string[i] = '\0'; - - /* Handle equivalency bindings here. Make the left-hand side be exactly - whatever the right-hand evaluates to, including keymaps. */ - if (equivalency) - { - return 0; - } - - /* If this is a new-style key-binding, then do the binding with - rl_bind_keyseq (). Otherwise, let the older code deal with it. */ - if (*string == '"') - { - char *seq; - register int j, k, passc; - - seq = (char *)xmalloc (1 + strlen (string)); - for (j = 1, k = passc = 0; string[j]; j++) - { - /* Allow backslash to quote characters, but leave them in place. - This allows a string to end with a backslash quoting another - backslash, or with a backslash quoting a double quote. The - backslashes are left in place for rl_translate_keyseq (). */ - if (passc || (string[j] == '\\')) - { - seq[k++] = string[j]; - passc = !passc; - continue; - } - - if (string[j] == '"') - break; - - seq[k++] = string[j]; - } - seq[k] = '\0'; - - /* Binding macro? */ - if (*funname == '\'' || *funname == '"') - { - j = strlen (funname); - - /* Remove the delimiting quotes from each end of FUNNAME. */ - if (j && funname[j - 1] == *funname) - funname[j - 1] = '\0'; - - rl_macro_bind (seq, &funname[1], _rl_keymap); - } - else - rl_bind_keyseq (seq, rl_named_function (funname)); - - xfree (seq); - return 0; - } - - /* Get the actual character we want to deal with. */ - kname = strrchr (string, '-'); - if (kname == 0) - kname = string; - else - kname++; - - key = glean_key_from_name (kname); - - /* Add in control and meta bits. */ - if (substring_member_of_array (string, _rl_possible_control_prefixes)) - key = CTRL (_rl_to_upper (key)); - - if (substring_member_of_array (string, _rl_possible_meta_prefixes)) - key = META (key); - - /* Temporary. Handle old-style keyname with macro-binding. */ - if (*funname == '\'' || *funname == '"') - { - char useq[2]; - int fl = strlen (funname); - - useq[0] = key; useq[1] = '\0'; - if (fl && funname[fl - 1] == *funname) - funname[fl - 1] = '\0'; - - rl_macro_bind (useq, &funname[1], _rl_keymap); - } -#if defined (PREFIX_META_HACK) - /* Ugly, but working hack to keep prefix-meta around. */ - else if (_rl_stricmp (funname, "prefix-meta") == 0) - { - char seq[2]; - - seq[0] = key; - seq[1] = '\0'; - rl_generic_bind (ISKMAP, seq, (char *)emacs_meta_keymap, _rl_keymap); - } -#endif /* PREFIX_META_HACK */ - else - rl_bind_key (key, rl_named_function (funname)); - return 0; -} - -/* Simple structure for boolean readline variables (i.e., those that can - have one of two values; either "On" or 1 for truth, or "Off" or 0 for - false. */ - -#define V_SPECIAL 0x1 - -static const struct { - const char * const name; - int *value; - int flags; -} boolean_varlist [] = { - { "bind-tty-special-chars", &_rl_bind_stty_chars, 0 }, - { "blink-matching-paren", &rl_blink_matching_paren, V_SPECIAL }, - { "byte-oriented", &rl_byte_oriented, 0 }, -#if defined (COLOR_SUPPORT) - { "colored-stats", &_rl_colored_stats, 0 }, -#endif - { "completion-ignore-case", &_rl_completion_case_fold, 0 }, - { "completion-map-case", &_rl_completion_case_map, 0 }, - { "convert-meta", &_rl_convert_meta_chars_to_ascii, 0 }, - { "disable-completion", &rl_inhibit_completion, 0 }, - { "echo-control-characters", &_rl_echo_control_chars, 0 }, - { "enable-keypad", &_rl_enable_keypad, 0 }, - { "enable-meta-key", &_rl_enable_meta, 0 }, - { "expand-tilde", &rl_complete_with_tilde_expansion, 0 }, - { "history-preserve-point", &_rl_history_preserve_point, 0 }, - { "horizontal-scroll-mode", &_rl_horizontal_scroll_mode, 0 }, - { "input-meta", &_rl_meta_flag, 0 }, - { "mark-directories", &_rl_complete_mark_directories, 0 }, - { "mark-modified-lines", &_rl_mark_modified_lines, 0 }, - { "mark-symlinked-directories", &_rl_complete_mark_symlink_dirs, 0 }, - { "match-hidden-files", &_rl_match_hidden_files, 0 }, - { "menu-complete-display-prefix", &_rl_menu_complete_prefix_first, 0 }, - { "meta-flag", &_rl_meta_flag, 0 }, - { "output-meta", &_rl_output_meta_chars, 0 }, - { "page-completions", &_rl_page_completions, 0 }, - { "prefer-visible-bell", &_rl_prefer_visible_bell, V_SPECIAL }, - { "print-completions-horizontally", &_rl_print_completions_horizontally, 0 }, - { "revert-all-at-newline", &_rl_revert_all_at_newline, 0 }, - { "show-all-if-ambiguous", &_rl_complete_show_all, 0 }, - { "show-all-if-unmodified", &_rl_complete_show_unmodified, 0 }, - { "skip-completed-text", &_rl_skip_completed_text, 0 }, -#if defined (VISIBLE_STATS) - { "visible-stats", &rl_visible_stats, 0 }, -#endif /* VISIBLE_STATS */ - { (char *)NULL, (int *)NULL, 0 } -}; - -static int -find_boolean_var (name) - const char *name; -{ - register int i; - - for (i = 0; boolean_varlist[i].name; i++) - if (_rl_stricmp (name, boolean_varlist[i].name) == 0) - return i; - return -1; -} - -/* Hooks for handling special boolean variables, where a - function needs to be called or another variable needs - to be changed when they're changed. */ -static void -hack_special_boolean_var (i) - int i; -{ - const char *name; - - name = boolean_varlist[i].name; - - if (_rl_stricmp (name, "blink-matching-paren") == 0) - _rl_enable_paren_matching (rl_blink_matching_paren); - else if (_rl_stricmp (name, "prefer-visible-bell") == 0) - { - if (_rl_prefer_visible_bell) - _rl_bell_preference = VISIBLE_BELL; - else - _rl_bell_preference = AUDIBLE_BELL; - } -} - -typedef int _rl_sv_func_t PARAMS((const char *)); - -/* These *must* correspond to the array indices for the appropriate - string variable. (Though they're not used right now.) */ -#define V_BELLSTYLE 0 -#define V_COMBEGIN 1 -#define V_EDITMODE 2 -#define V_ISRCHTERM 3 -#define V_KEYMAP 4 - -#define V_STRING 1 -#define V_INT 2 - -/* Forward declarations */ -static int sv_bell_style PARAMS((const char *)); -static int sv_combegin PARAMS((const char *)); -static int sv_dispprefix PARAMS((const char *)); -static int sv_compquery PARAMS((const char *)); -static int sv_compwidth PARAMS((const char *)); -static int sv_editmode PARAMS((const char *)); -static int sv_histsize PARAMS((const char *)); -static int sv_isrchterm PARAMS((const char *)); -static int sv_keymap PARAMS((const char *)); -static int sv_seqtimeout PARAMS((const char *)); - -static const struct { - const char * const name; - int flags; - _rl_sv_func_t *set_func; -} string_varlist[] = { - { "bell-style", V_STRING, sv_bell_style }, - { "comment-begin", V_STRING, sv_combegin }, - { "completion-display-width", V_INT, sv_compwidth }, - { "completion-prefix-display-length", V_INT, sv_dispprefix }, - { "completion-query-items", V_INT, sv_compquery }, - { "editing-mode", V_STRING, sv_editmode }, - { "history-size", V_INT, sv_histsize }, - { "isearch-terminators", V_STRING, sv_isrchterm }, - { "keymap", V_STRING, sv_keymap }, - { "keyseq-timeout", V_INT, sv_seqtimeout }, - { (char *)NULL, 0, (_rl_sv_func_t *)0 } -}; - -static int -find_string_var (name) - const char *name; -{ - register int i; - - for (i = 0; string_varlist[i].name; i++) - if (_rl_stricmp (name, string_varlist[i].name) == 0) - return i; - return -1; -} - -/* A boolean value that can appear in a `set variable' command is true if - the value is null or empty, `on' (case-insenstive), or "1". Any other - values result in 0 (false). */ -static int -bool_to_int (value) - const char *value; -{ - return (value == 0 || *value == '\0' || - (_rl_stricmp (value, "on") == 0) || - (value[0] == '1' && value[1] == '\0')); -} - -char * -rl_variable_value (name) - const char *name; -{ - register int i; - - /* Check for simple variables first. */ - i = find_boolean_var (name); - if (i >= 0) - return (*boolean_varlist[i].value ? "on" : "off"); - - i = find_string_var (name); - if (i >= 0) - return (_rl_get_string_variable_value (string_varlist[i].name)); - - /* Unknown variable names return NULL. */ - return 0; -} - -int -rl_variable_bind (name, value) - const char *name, *value; -{ - register int i; - int v; - - /* Check for simple variables first. */ - i = find_boolean_var (name); - if (i >= 0) - { - *boolean_varlist[i].value = bool_to_int (value); - if (boolean_varlist[i].flags & V_SPECIAL) - hack_special_boolean_var (i); - return 0; - } - - i = find_string_var (name); - - /* For the time being, unknown variable names or string names without a - handler function are simply ignored. */ - if (i < 0 || string_varlist[i].set_func == 0) - return 0; - - v = (*string_varlist[i].set_func) (value); - return v; -} - -static int -sv_editmode (value) - const char *value; -{ - if (_rl_strnicmp (value, "vi", 2) == 0) - { -#if defined (VI_MODE) - _rl_keymap = vi_insertion_keymap; - rl_editing_mode = vi_mode; -#endif /* VI_MODE */ - return 0; - } - else if (_rl_strnicmp (value, "emacs", 5) == 0) - { - _rl_keymap = emacs_standard_keymap; - rl_editing_mode = emacs_mode; - return 0; - } - return 1; -} - -static int -sv_combegin (value) - const char *value; -{ - if (value && *value) - { - FREE (_rl_comment_begin); - _rl_comment_begin = savestring (value); - return 0; - } - return 1; -} - -static int -sv_dispprefix (value) - const char *value; -{ - int nval = 0; - - if (value && *value) - { - nval = atoi (value); - if (nval < 0) - nval = 0; - } - _rl_completion_prefix_display_length = nval; - return 0; -} - -static int -sv_compquery (value) - const char *value; -{ - int nval = 100; - - if (value && *value) - { - nval = atoi (value); - if (nval < 0) - nval = 0; - } - rl_completion_query_items = nval; - return 0; -} - -static int -sv_compwidth (value) - const char *value; -{ - int nval = -1; - - if (value && *value) - nval = atoi (value); - - _rl_completion_columns = nval; - return 0; -} - -static int -sv_histsize (value) - const char *value; -{ - int nval; - - nval = 500; - if (value && *value) - { - nval = atoi (value); - if (nval < 0) - return 1; - } - stifle_history (nval); - return 0; -} - -static int -sv_keymap (value) - const char *value; -{ - Keymap kmap; - - kmap = rl_get_keymap_by_name (value); - if (kmap) - { - rl_set_keymap (kmap); - return 0; - } - return 1; -} - -static int -sv_seqtimeout (value) - const char *value; -{ - int nval; - - nval = 0; - if (value && *value) - { - nval = atoi (value); - if (nval < 0) - nval = 0; - } - _rl_keyseq_timeout = nval; - return 0; -} - -static int -sv_bell_style (value) - const char *value; -{ - if (value == 0 || *value == '\0') - _rl_bell_preference = AUDIBLE_BELL; - else if (_rl_stricmp (value, "none") == 0 || _rl_stricmp (value, "off") == 0) - _rl_bell_preference = NO_BELL; - else if (_rl_stricmp (value, "audible") == 0 || _rl_stricmp (value, "on") == 0) - _rl_bell_preference = AUDIBLE_BELL; - else if (_rl_stricmp (value, "visible") == 0) - _rl_bell_preference = VISIBLE_BELL; - else - return 1; - return 0; -} - -static int -sv_isrchterm (value) - const char *value; -{ - int beg, end, delim; - char *v; - - if (value == 0) - return 1; - - /* Isolate the value and translate it into a character string. */ - v = savestring (value); - FREE (_rl_isearch_terminators); - if (v[0] == '"' || v[0] == '\'') - { - delim = v[0]; - for (beg = end = 1; v[end] && v[end] != delim; end++) - ; - } - else - { - for (beg = end = 0; whitespace (v[end]) == 0; end++) - ; - } - - v[end] = '\0'; - - /* The value starts at v + beg. Translate it into a character string. */ - _rl_isearch_terminators = (char *)xmalloc (2 * strlen (v) + 1); - rl_translate_keyseq (v + beg, _rl_isearch_terminators, &end); - _rl_isearch_terminators[end] = '\0'; - - xfree (v); - return 0; -} - -/* Return the character which matches NAME. - For example, `Space' returns ' '. */ - -typedef struct { - const char * const name; - int value; -} assoc_list; - -static const assoc_list name_key_alist[] = { - { "DEL", 0x7f }, - { "ESC", '\033' }, - { "Escape", '\033' }, - { "LFD", '\n' }, - { "Newline", '\n' }, - { "RET", '\r' }, - { "Return", '\r' }, - { "Rubout", 0x7f }, - { "SPC", ' ' }, - { "Space", ' ' }, - { "Tab", 0x09 }, - { (char *)0x0, 0 } -}; - -static int -glean_key_from_name (name) - char *name; -{ - register int i; - - for (i = 0; name_key_alist[i].name; i++) - if (_rl_stricmp (name, name_key_alist[i].name) == 0) - return (name_key_alist[i].value); - - return (*(unsigned char *)name); /* XXX was return (*name) */ -} - -/* Auxiliary functions to manage keymaps. */ -static const struct { - const char * const name; - Keymap map; -} keymap_names[] = { - { "emacs", emacs_standard_keymap }, - { "emacs-standard", emacs_standard_keymap }, - { "emacs-meta", emacs_meta_keymap }, - { "emacs-ctlx", emacs_ctlx_keymap }, -#if defined (VI_MODE) - { "vi", vi_movement_keymap }, - { "vi-move", vi_movement_keymap }, - { "vi-command", vi_movement_keymap }, - { "vi-insert", vi_insertion_keymap }, -#endif /* VI_MODE */ - { (char *)0x0, (Keymap)0x0 } -}; - -Keymap -rl_get_keymap_by_name (name) - const char *name; -{ - register int i; - - for (i = 0; keymap_names[i].name; i++) - if (_rl_stricmp (name, keymap_names[i].name) == 0) - return (keymap_names[i].map); - return ((Keymap) NULL); -} - -char * -rl_get_keymap_name (map) - Keymap map; -{ - register int i; - for (i = 0; keymap_names[i].name; i++) - if (map == keymap_names[i].map) - return ((char *)keymap_names[i].name); - return ((char *)NULL); -} - -void -rl_set_keymap (map) - Keymap map; -{ - if (map) - _rl_keymap = map; -} - -Keymap -rl_get_keymap () -{ - return (_rl_keymap); -} - -void -rl_set_keymap_from_edit_mode () -{ - if (rl_editing_mode == emacs_mode) - _rl_keymap = emacs_standard_keymap; -#if defined (VI_MODE) - else if (rl_editing_mode == vi_mode) - _rl_keymap = vi_insertion_keymap; -#endif /* VI_MODE */ -} - -char * -rl_get_keymap_name_from_edit_mode () -{ - if (rl_editing_mode == emacs_mode) - return "emacs"; -#if defined (VI_MODE) - else if (rl_editing_mode == vi_mode) - return "vi"; -#endif /* VI_MODE */ - else - return "none"; -} - -/* **************************************************************** */ -/* */ -/* Key Binding and Function Information */ -/* */ -/* **************************************************************** */ - -/* Each of the following functions produces information about the - state of keybindings and functions known to Readline. The info - is always printed to rl_outstream, and in such a way that it can - be read back in (i.e., passed to rl_parse_and_bind ()). */ - -/* Print the names of functions known to Readline. */ -void -rl_list_funmap_names () -{ - register int i; - const char **funmap_names; - - funmap_names = rl_funmap_names (); - - if (!funmap_names) - return; - - for (i = 0; funmap_names[i]; i++) - fprintf (rl_outstream, "%s\n", funmap_names[i]); - - xfree (funmap_names); -} - -static char * -_rl_get_keyname (key) - int key; -{ - char *keyname; - int i, c; - - keyname = (char *)xmalloc (8); - - c = key; - /* Since this is going to be used to write out keysequence-function - pairs for possible inclusion in an inputrc file, we don't want to - do any special meta processing on KEY. */ - -#if 1 - /* XXX - Experimental */ - /* We might want to do this, but the old version of the code did not. */ - - /* If this is an escape character, we don't want to do any more processing. - Just add the special ESC key sequence and return. */ - if (c == ESC) - { - keyname[0] = '\\'; - keyname[1] = 'e'; - keyname[2] = '\0'; - return keyname; - } -#endif - - /* RUBOUT is translated directly into \C-? */ - if (key == RUBOUT) - { - keyname[0] = '\\'; - keyname[1] = 'C'; - keyname[2] = '-'; - keyname[3] = '?'; - keyname[4] = '\0'; - return keyname; - } - - i = 0; - /* Now add special prefixes needed for control characters. This can - potentially change C. */ - if (CTRL_CHAR (c)) - { - keyname[i++] = '\\'; - keyname[i++] = 'C'; - keyname[i++] = '-'; - c = _rl_to_lower (UNCTRL (c)); - } - - /* XXX experimental code. Turn the characters that are not ASCII or - ISO Latin 1 (128 - 159) into octal escape sequences (\200 - \237). - This changes C. */ - if (c >= 128 && c <= 159) - { - keyname[i++] = '\\'; - keyname[i++] = '2'; - c -= 128; - keyname[i++] = (c / 8) + '0'; - c = (c % 8) + '0'; - } - - /* Now, if the character needs to be quoted with a backslash, do that. */ - if (c == '\\' || c == '"') - keyname[i++] = '\\'; - - /* Now add the key, terminate the string, and return it. */ - keyname[i++] = (char) c; - keyname[i] = '\0'; - - return keyname; -} - -/* Return a NULL terminated array of strings which represent the key - sequences that are used to invoke FUNCTION in MAP. */ -char ** -rl_invoking_keyseqs_in_map (function, map) - rl_command_func_t *function; - Keymap map; -{ - register int key; - char **result; - int result_index, result_size; - - result = (char **)NULL; - result_index = result_size = 0; - - for (key = 0; key < KEYMAP_SIZE; key++) - { - switch (map[key].type) - { - case ISMACR: - /* Macros match, if, and only if, the pointers are identical. - Thus, they are treated exactly like functions in here. */ - case ISFUNC: - /* If the function in the keymap is the one we are looking for, - then add the current KEY to the list of invoking keys. */ - if (map[key].function == function) - { - char *keyname; - - keyname = _rl_get_keyname (key); - - if (result_index + 2 > result_size) - { - result_size += 10; - result = (char **)xrealloc (result, result_size * sizeof (char *)); - } - - result[result_index++] = keyname; - result[result_index] = (char *)NULL; - } - break; - - case ISKMAP: - { - char **seqs; - register int i; - - /* Find the list of keyseqs in this map which have FUNCTION as - their target. Add the key sequences found to RESULT. */ - if (map[key].function) - seqs = - rl_invoking_keyseqs_in_map (function, FUNCTION_TO_KEYMAP (map, key)); - else - break; - - if (seqs == 0) - break; - - for (i = 0; seqs[i]; i++) - { - char *keyname = (char *)xmalloc (6 + strlen (seqs[i])); - - if (key == ESC) - { - /* If ESC is the meta prefix and we're converting chars - with the eighth bit set to ESC-prefixed sequences, then - we can use \M-. Otherwise we need to use the sequence - for ESC. */ - if (_rl_convert_meta_chars_to_ascii && map[ESC].type == ISKMAP) - sprintf (keyname, "\\M-"); - else - sprintf (keyname, "\\e"); - } - else if (CTRL_CHAR (key)) - sprintf (keyname, "\\C-%c", _rl_to_lower (UNCTRL (key))); - else if (key == RUBOUT) - sprintf (keyname, "\\C-?"); - else if (key == '\\' || key == '"') - { - keyname[0] = '\\'; - keyname[1] = (char) key; - keyname[2] = '\0'; - } - else - { - keyname[0] = (char) key; - keyname[1] = '\0'; - } - - strcat (keyname, seqs[i]); - xfree (seqs[i]); - - if (result_index + 2 > result_size) - { - result_size += 10; - result = (char **)xrealloc (result, result_size * sizeof (char *)); - } - - result[result_index++] = keyname; - result[result_index] = (char *)NULL; - } - - xfree (seqs); - } - break; - } - } - return (result); -} - -/* Return a NULL terminated array of strings which represent the key - sequences that can be used to invoke FUNCTION using the current keymap. */ -char ** -rl_invoking_keyseqs (function) - rl_command_func_t *function; -{ - return (rl_invoking_keyseqs_in_map (function, _rl_keymap)); -} - -/* Print all of the functions and their bindings to rl_outstream. If - PRINT_READABLY is non-zero, then print the output in such a way - that it can be read back in. */ -void -rl_function_dumper (print_readably) - int print_readably; -{ - register int i; - const char **names; - const char *name; - - names = rl_funmap_names (); - - fprintf (rl_outstream, "\n"); - - for (i = 0; name = names[i]; i++) - { - rl_command_func_t *function; - char **invokers; - - function = rl_named_function (name); - invokers = rl_invoking_keyseqs_in_map (function, _rl_keymap); - - if (print_readably) - { - if (!invokers) - fprintf (rl_outstream, "# %s (not bound)\n", name); - else - { - register int j; - - for (j = 0; invokers[j]; j++) - { - fprintf (rl_outstream, "\"%s\": %s\n", - invokers[j], name); - xfree (invokers[j]); - } - - xfree (invokers); - } - } - else - { - if (!invokers) - fprintf (rl_outstream, "%s is not bound to any keys\n", - name); - else - { - register int j; - - fprintf (rl_outstream, "%s can be found on ", name); - - for (j = 0; invokers[j] && j < 5; j++) - { - fprintf (rl_outstream, "\"%s\"%s", invokers[j], - invokers[j + 1] ? ", " : ".\n"); - } - - if (j == 5 && invokers[j]) - fprintf (rl_outstream, "...\n"); - - for (j = 0; invokers[j]; j++) - xfree (invokers[j]); - - xfree (invokers); - } - } - } - - xfree (names); -} - -/* Print all of the current functions and their bindings to - rl_outstream. If an explicit argument is given, then print - the output in such a way that it can be read back in. */ -int -rl_dump_functions (count, key) - int count, key; -{ - if (rl_dispatching) - fprintf (rl_outstream, "\r\n"); - rl_function_dumper (rl_explicit_arg); - rl_on_new_line (); - return (0); -} - -static void -_rl_macro_dumper_internal (print_readably, map, prefix) - int print_readably; - Keymap map; - char *prefix; -{ - register int key; - char *keyname, *out; - int prefix_len; - - for (key = 0; key < KEYMAP_SIZE; key++) - { - switch (map[key].type) - { - case ISMACR: - keyname = _rl_get_keyname (key); - out = _rl_untranslate_macro_value ((char *)map[key].function, 0); - - if (print_readably) - fprintf (rl_outstream, "\"%s%s\": \"%s\"\n", prefix ? prefix : "", - keyname, - out ? out : ""); - else - fprintf (rl_outstream, "%s%s outputs %s\n", prefix ? prefix : "", - keyname, - out ? out : ""); - xfree (keyname); - xfree (out); - break; - case ISFUNC: - break; - case ISKMAP: - prefix_len = prefix ? strlen (prefix) : 0; - if (key == ESC) - { - keyname = (char *)xmalloc (3 + prefix_len); - if (prefix) - strcpy (keyname, prefix); - keyname[prefix_len] = '\\'; - keyname[prefix_len + 1] = 'e'; - keyname[prefix_len + 2] = '\0'; - } - else - { - keyname = _rl_get_keyname (key); - if (prefix) - { - out = (char *)xmalloc (strlen (keyname) + prefix_len + 1); - strcpy (out, prefix); - strcpy (out + prefix_len, keyname); - xfree (keyname); - keyname = out; - } - } - - _rl_macro_dumper_internal (print_readably, FUNCTION_TO_KEYMAP (map, key), keyname); - xfree (keyname); - break; - } - } -} - -void -rl_macro_dumper (print_readably) - int print_readably; -{ - _rl_macro_dumper_internal (print_readably, _rl_keymap, (char *)NULL); -} - -int -rl_dump_macros (count, key) - int count, key; -{ - if (rl_dispatching) - fprintf (rl_outstream, "\r\n"); - rl_macro_dumper (rl_explicit_arg); - rl_on_new_line (); - return (0); -} - -static char * -_rl_get_string_variable_value (name) - const char *name; -{ - static char numbuf[32]; - char *ret; - - if (_rl_stricmp (name, "bell-style") == 0) - { - switch (_rl_bell_preference) - { - case NO_BELL: - return "none"; - case VISIBLE_BELL: - return "visible"; - case AUDIBLE_BELL: - default: - return "audible"; - } - } - else if (_rl_stricmp (name, "comment-begin") == 0) - return (_rl_comment_begin ? _rl_comment_begin : RL_COMMENT_BEGIN_DEFAULT); - else if (_rl_stricmp (name, "completion-display-width") == 0) - { - sprintf (numbuf, "%d", _rl_completion_columns); - return (numbuf); - } - else if (_rl_stricmp (name, "completion-prefix-display-length") == 0) - { - sprintf (numbuf, "%d", _rl_completion_prefix_display_length); - return (numbuf); - } - else if (_rl_stricmp (name, "completion-query-items") == 0) - { - sprintf (numbuf, "%d", rl_completion_query_items); - return (numbuf); - } - else if (_rl_stricmp (name, "editing-mode") == 0) - return (rl_get_keymap_name_from_edit_mode ()); - else if (_rl_stricmp (name, "history-size") == 0) - { - sprintf (numbuf, "%d", history_is_stifled() ? history_max_entries : 0); - return (numbuf); - } - else if (_rl_stricmp (name, "isearch-terminators") == 0) - { - if (_rl_isearch_terminators == 0) - return 0; - ret = _rl_untranslate_macro_value (_rl_isearch_terminators, 0); - if (ret) - { - strncpy (numbuf, ret, sizeof (numbuf) - 1); - xfree (ret); - numbuf[sizeof(numbuf) - 1] = '\0'; - } - else - numbuf[0] = '\0'; - return numbuf; - } - else if (_rl_stricmp (name, "keymap") == 0) - { - ret = rl_get_keymap_name (_rl_keymap); - if (ret == 0) - ret = rl_get_keymap_name_from_edit_mode (); - return (ret ? ret : "none"); - } - else - return (0); -} - -void -rl_variable_dumper (print_readably) - int print_readably; -{ - int i; - char *v; - - for (i = 0; boolean_varlist[i].name; i++) - { - if (print_readably) - fprintf (rl_outstream, "set %s %s\n", boolean_varlist[i].name, - *boolean_varlist[i].value ? "on" : "off"); - else - fprintf (rl_outstream, "%s is set to `%s'\n", boolean_varlist[i].name, - *boolean_varlist[i].value ? "on" : "off"); - } - - for (i = 0; string_varlist[i].name; i++) - { - v = _rl_get_string_variable_value (string_varlist[i].name); - if (v == 0) /* _rl_isearch_terminators can be NULL */ - continue; - if (print_readably) - fprintf (rl_outstream, "set %s %s\n", string_varlist[i].name, v); - else - fprintf (rl_outstream, "%s is set to `%s'\n", string_varlist[i].name, v); - } -} - -/* Print all of the current variables and their values to - rl_outstream. If an explicit argument is given, then print - the output in such a way that it can be read back in. */ -int -rl_dump_variables (count, key) - int count, key; -{ - if (rl_dispatching) - fprintf (rl_outstream, "\r\n"); - rl_variable_dumper (rl_explicit_arg); - rl_on_new_line (); - return (0); -} - -/* Return non-zero if any members of ARRAY are a substring in STRING. */ -static int -substring_member_of_array (string, array) - const char *string; - const char * const *array; -{ - while (*array) - { - if (_rl_strindex (string, *array)) - return (1); - array++; - } - return (0); -} diff --git a/lib/readline/complete.c.save1 b/lib/readline/complete.c.save1 deleted file mode 100644 index 7ebb104e9..000000000 --- a/lib/readline/complete.c.save1 +++ /dev/null @@ -1,2705 +0,0 @@ -/* complete.c -- filename completion for readline. */ - -/* Copyright (C) 1987-2011 Free Software Foundation, Inc. - - This file is part of the GNU Readline Library (Readline), a library - for reading lines of text with interactive input and history editing. - - Readline is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Readline is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Readline. If not, see . -*/ - -#define READLINE_LIBRARY - -#if defined (HAVE_CONFIG_H) -# include -#endif - -#include -#include -#if defined (HAVE_SYS_FILE_H) -# include -#endif - -#include - -#if defined (HAVE_UNISTD_H) -# include -#endif /* HAVE_UNISTD_H */ - -#if defined (HAVE_STDLIB_H) -# include -#else -# include "ansi_stdlib.h" -#endif /* HAVE_STDLIB_H */ - -#include - -#include -#if !defined (errno) -extern int errno; -#endif /* !errno */ - -#if defined (HAVE_PWD_H) -#include -#endif - -#include "posixdir.h" -#include "posixstat.h" - -/* System-specific feature definitions and include files. */ -#include "rldefs.h" -#include "rlmbutil.h" - -/* Some standard library routines. */ -#include "readline.h" -#include "xmalloc.h" -#include "rlprivate.h" - -#ifdef __STDC__ -typedef int QSFUNC (const void *, const void *); -#else -typedef int QSFUNC (); -#endif - -#ifdef HAVE_LSTAT -# define LSTAT lstat -#else -# define LSTAT stat -#endif - -/* Unix version of a hidden file. Could be different on other systems. */ -#define HIDDEN_FILE(fname) ((fname)[0] == '.') - -/* Most systems don't declare getpwent in if _POSIX_SOURCE is - defined. */ -#if defined (HAVE_GETPWENT) && (!defined (HAVE_GETPW_DECLS) || defined (_POSIX_SOURCE)) -extern struct passwd *getpwent PARAMS((void)); -#endif /* HAVE_GETPWENT && (!HAVE_GETPW_DECLS || _POSIX_SOURCE) */ - -/* If non-zero, then this is the address of a function to call when - completing a word would normally display the list of possible matches. - This function is called instead of actually doing the display. - It takes three arguments: (char **matches, int num_matches, int max_length) - where MATCHES is the array of strings that matched, NUM_MATCHES is the - number of strings in that array, and MAX_LENGTH is the length of the - longest string in that array. */ -rl_compdisp_func_t *rl_completion_display_matches_hook = (rl_compdisp_func_t *)NULL; - -#if defined (VISIBLE_STATS) -# if !defined (X_OK) -# define X_OK 1 -# endif -static int stat_char PARAMS((char *)); -#endif - -static int path_isdir PARAMS((const char *)); - -static char *rl_quote_filename PARAMS((char *, int, char *)); - -static void _rl_complete_sigcleanup PARAMS((int, void *)); - -static void set_completion_defaults PARAMS((int)); -static int get_y_or_n PARAMS((int)); -static int _rl_internal_pager PARAMS((int)); -static char *printable_part PARAMS((char *)); -static int fnwidth PARAMS((const char *)); -static int fnprint PARAMS((const char *, int)); -static int print_filename PARAMS((char *, char *, int)); - -static char **gen_completion_matches PARAMS((char *, int, int, rl_compentry_func_t *, int, int)); - -static char **remove_duplicate_matches PARAMS((char **)); -static void insert_match PARAMS((char *, int, int, char *)); -static int append_to_match PARAMS((char *, int, int, int)); -static void insert_all_matches PARAMS((char **, int, char *)); -static int complete_fncmp PARAMS((const char *, int, const char *, int)); -static void display_matches PARAMS((char **)); -static int compute_lcd_of_matches PARAMS((char **, int, const char *)); -static int postprocess_matches PARAMS((char ***, int)); -static int complete_get_screenwidth PARAMS((void)); - -static char *make_quoted_replacement PARAMS((char *, int, char *)); - -/* **************************************************************** */ -/* */ -/* Completion matching, from readline's point of view. */ -/* */ -/* **************************************************************** */ - -/* Variables known only to the readline library. */ - -/* If non-zero, non-unique completions always show the list of matches. */ -int _rl_complete_show_all = 0; - -/* If non-zero, non-unique completions show the list of matches, unless it - is not possible to do partial completion and modify the line. */ -int _rl_complete_show_unmodified = 0; - -/* If non-zero, completed directory names have a slash appended. */ -int _rl_complete_mark_directories = 1; - -/* If non-zero, the symlinked directory completion behavior introduced in - readline-4.2a is disabled, and symlinks that point to directories have - a slash appended (subject to the value of _rl_complete_mark_directories). - This is user-settable via the mark-symlinked-directories variable. */ -int _rl_complete_mark_symlink_dirs = 0; - -/* If non-zero, completions are printed horizontally in alphabetical order, - like `ls -x'. */ -int _rl_print_completions_horizontally; - -/* Non-zero means that case is not significant in filename completion. */ -#if defined (__MSDOS__) && !defined (__DJGPP__) -int _rl_completion_case_fold = 1; -#else -int _rl_completion_case_fold = 0; -#endif - -/* Non-zero means that `-' and `_' are equivalent when comparing filenames - for completion. */ -int _rl_completion_case_map = 0; - -/* If zero, don't match hidden files (filenames beginning with a `.' on - Unix) when doing filename completion. */ -int _rl_match_hidden_files = 1; - -/* Length in characters of a common prefix replaced with an ellipsis (`...') - when displaying completion matches. Matches whose printable portion has - more than this number of displaying characters in common will have the common - display prefix replaced with an ellipsis. */ -int _rl_completion_prefix_display_length = 0; - -/* The readline-private number of screen columns to use when displaying - matches. If < 0 or > _rl_screenwidth, it is ignored. */ -int _rl_completion_columns = -1; - -/* Global variables available to applications using readline. */ - -#if defined (VISIBLE_STATS) -/* Non-zero means add an additional character to each filename displayed - during listing completion iff rl_filename_completion_desired which helps - to indicate the type of file being listed. */ -int rl_visible_stats = 0; -#endif /* VISIBLE_STATS */ - -/* If non-zero, when completing in the middle of a word, don't insert - characters from the match that match characters following point in - the word. This means, for instance, completing when the cursor is - after the `e' in `Makefile' won't result in `Makefilefile'. */ -int _rl_skip_completed_text = 0; - -/* If non-zero, menu completion displays the common prefix first in the - cycle of possible completions instead of the last. */ -int _rl_menu_complete_prefix_first = 0; - -/* If non-zero, then this is the address of a function to call when - completing on a directory name. The function is called with - the address of a string (the current directory name) as an arg. */ -rl_icppfunc_t *rl_directory_completion_hook = (rl_icppfunc_t *)NULL; - -rl_icppfunc_t *rl_directory_rewrite_hook = (rl_icppfunc_t *)NULL; - -rl_icppfunc_t *rl_filename_stat_hook = (rl_icppfunc_t *)NULL; - -/* If non-zero, this is the address of a function to call when reading - directory entries from the filesystem for completion and comparing - them to the partial word to be completed. The function should - either return its first argument (if no conversion takes place) or - newly-allocated memory. This can, for instance, convert filenames - between character sets for comparison against what's typed at the - keyboard. The returned value is what is added to the list of - matches. The second argument is the length of the filename to be - converted. */ -rl_dequote_func_t *rl_filename_rewrite_hook = (rl_dequote_func_t *)NULL; - -/* Non-zero means readline completion functions perform tilde expansion. */ -int rl_complete_with_tilde_expansion = 0; - -/* Pointer to the generator function for completion_matches (). - NULL means to use rl_filename_completion_function (), the default filename - completer. */ -rl_compentry_func_t *rl_completion_entry_function = (rl_compentry_func_t *)NULL; - -/* Pointer to generator function for rl_menu_complete (). NULL means to use - *rl_completion_entry_function (see above). */ -rl_compentry_func_t *rl_menu_completion_entry_function = (rl_compentry_func_t *)NULL; - -/* Pointer to alternative function to create matches. - Function is called with TEXT, START, and END. - START and END are indices in RL_LINE_BUFFER saying what the boundaries - of TEXT are. - If this function exists and returns NULL then call the value of - rl_completion_entry_function to try to match, otherwise use the - array of strings returned. */ -rl_completion_func_t *rl_attempted_completion_function = (rl_completion_func_t *)NULL; - -/* Non-zero means to suppress normal filename completion after the - user-specified completion function has been called. */ -int rl_attempted_completion_over = 0; - -/* Set to a character indicating the type of completion being performed - by rl_complete_internal, available for use by application completion - functions. */ -int rl_completion_type = 0; - -/* Up to this many items will be displayed in response to a - possible-completions call. After that, we ask the user if - she is sure she wants to see them all. A negative value means - don't ask. */ -int rl_completion_query_items = 100; - -int _rl_page_completions = 1; - -/* The basic list of characters that signal a break between words for the - completer routine. The contents of this variable is what breaks words - in the shell, i.e. " \t\n\"\\'`@$><=" */ -const char *rl_basic_word_break_characters = " \t\n\"\\'`@$><=;|&{("; /* }) */ - -/* List of basic quoting characters. */ -const char *rl_basic_quote_characters = "\"'"; - -/* The list of characters that signal a break between words for - rl_complete_internal. The default list is the contents of - rl_basic_word_break_characters. */ -/*const*/ char *rl_completer_word_break_characters = (/*const*/ char *)NULL; - -/* Hook function to allow an application to set the completion word - break characters before readline breaks up the line. Allows - position-dependent word break characters. */ -rl_cpvfunc_t *rl_completion_word_break_hook = (rl_cpvfunc_t *)NULL; - -/* List of characters which can be used to quote a substring of the line. - Completion occurs on the entire substring, and within the substring - rl_completer_word_break_characters are treated as any other character, - unless they also appear within this list. */ -const char *rl_completer_quote_characters = (const char *)NULL; - -/* List of characters that should be quoted in filenames by the completer. */ -const char *rl_filename_quote_characters = (const char *)NULL; - -/* List of characters that are word break characters, but should be left - in TEXT when it is passed to the completion function. The shell uses - this to help determine what kind of completing to do. */ -const char *rl_special_prefixes = (const char *)NULL; - -/* If non-zero, then disallow duplicates in the matches. */ -int rl_ignore_completion_duplicates = 1; - -/* Non-zero means that the results of the matches are to be treated - as filenames. This is ALWAYS zero on entry, and can only be changed - within a completion entry finder function. */ -int rl_filename_completion_desired = 0; - -/* Non-zero means that the results of the matches are to be quoted using - double quotes (or an application-specific quoting mechanism) if the - filename contains any characters in rl_filename_quote_chars. This is - ALWAYS non-zero on entry, and can only be changed within a completion - entry finder function. */ -int rl_filename_quoting_desired = 1; - -/* This function, if defined, is called by the completer when real - filename completion is done, after all the matching names have been - generated. It is passed a (char**) known as matches in the code below. - It consists of a NULL-terminated array of pointers to potential - matching strings. The 1st element (matches[0]) is the maximal - substring that is common to all matches. This function can re-arrange - the list of matches as required, but all elements of the array must be - free()'d if they are deleted. The main intent of this function is - to implement FIGNORE a la SunOS csh. */ -rl_compignore_func_t *rl_ignore_some_completions_function = (rl_compignore_func_t *)NULL; - -/* Set to a function to quote a filename in an application-specific fashion. - Called with the text to quote, the type of match found (single or multiple) - and a pointer to the quoting character to be used, which the function can - reset if desired. */ -rl_quote_func_t *rl_filename_quoting_function = rl_quote_filename; - -/* Function to call to remove quoting characters from a filename. Called - before completion is attempted, so the embedded quotes do not interfere - with matching names in the file system. Readline doesn't do anything - with this; it's set only by applications. */ -rl_dequote_func_t *rl_filename_dequoting_function = (rl_dequote_func_t *)NULL; - -/* Function to call to decide whether or not a word break character is - quoted. If a character is quoted, it does not break words for the - completer. */ -rl_linebuf_func_t *rl_char_is_quoted_p = (rl_linebuf_func_t *)NULL; - -/* If non-zero, the completion functions don't append anything except a - possible closing quote. This is set to 0 by rl_complete_internal and - may be changed by an application-specific completion function. */ -int rl_completion_suppress_append = 0; - -/* Character appended to completed words when at the end of the line. The - default is a space. */ -int rl_completion_append_character = ' '; - -/* If non-zero, the completion functions don't append any closing quote. - This is set to 0 by rl_complete_internal and may be changed by an - application-specific completion function. */ -int rl_completion_suppress_quote = 0; - -/* Set to any quote character readline thinks it finds before any application - completion function is called. */ -int rl_completion_quote_character; - -/* Set to a non-zero value if readline found quoting anywhere in the word to - be completed; set before any application completion function is called. */ -int rl_completion_found_quote; - -/* If non-zero, a slash will be appended to completed filenames that are - symbolic links to directory names, subject to the value of the - mark-directories variable (which is user-settable). This exists so - that application completion functions can override the user's preference - (set via the mark-symlinked-directories variable) if appropriate. - It's set to the value of _rl_complete_mark_symlink_dirs in - rl_complete_internal before any application-specific completion - function is called, so without that function doing anything, the user's - preferences are honored. */ -int rl_completion_mark_symlink_dirs; - -/* If non-zero, inhibit completion (temporarily). */ -int rl_inhibit_completion; - -/* Set to the last key used to invoke one of the completion functions */ -int rl_completion_invoking_key; - -/* If non-zero, sort the completion matches. On by default. */ -int rl_sort_completion_matches = 1; - -/* Variables local to this file. */ - -/* Local variable states what happened during the last completion attempt. */ -static int completion_changed_buffer; - -/* The result of the query to the user about displaying completion matches */ -static int completion_y_or_n; - -/*************************************/ -/* */ -/* Bindable completion functions */ -/* */ -/*************************************/ - -/* Complete the word at or before point. You have supplied the function - that does the initial simple matching selection algorithm (see - rl_completion_matches ()). The default is to do filename completion. */ -int -rl_complete (ignore, invoking_key) - int ignore, invoking_key; -{ - rl_completion_invoking_key = invoking_key; - - if (rl_inhibit_completion) - return (_rl_insert_char (ignore, invoking_key)); - else if (rl_last_func == rl_complete && !completion_changed_buffer) - return (rl_complete_internal ('?')); - else if (_rl_complete_show_all) - return (rl_complete_internal ('!')); - else if (_rl_complete_show_unmodified) - return (rl_complete_internal ('@')); - else - return (rl_complete_internal (TAB)); -} - -/* List the possible completions. See description of rl_complete (). */ -int -rl_possible_completions (ignore, invoking_key) - int ignore, invoking_key; -{ - rl_completion_invoking_key = invoking_key; - return (rl_complete_internal ('?')); -} - -int -rl_insert_completions (ignore, invoking_key) - int ignore, invoking_key; -{ - rl_completion_invoking_key = invoking_key; - return (rl_complete_internal ('*')); -} - -/* Return the correct value to pass to rl_complete_internal performing - the same tests as rl_complete. This allows consecutive calls to an - application's completion function to list possible completions and for - an application-specific completion function to honor the - show-all-if-ambiguous readline variable. */ -int -rl_completion_mode (cfunc) - rl_command_func_t *cfunc; -{ - if (rl_last_func == cfunc && !completion_changed_buffer) - return '?'; - else if (_rl_complete_show_all) - return '!'; - else if (_rl_complete_show_unmodified) - return '@'; - else - return TAB; -} - -/************************************/ -/* */ -/* Completion utility functions */ -/* */ -/************************************/ - -/* Reset readline state on a signal or other event. */ -void -_rl_reset_completion_state () -{ - rl_completion_found_quote = 0; - rl_completion_quote_character = 0; -} - -static void -_rl_complete_sigcleanup (sig, ptr) - int sig; - void *ptr; -{ - if (sig == SIGINT) /* XXX - for now */ - _rl_free_match_list ((char **)ptr); -} - -/* Set default values for readline word completion. These are the variables - that application completion functions can change or inspect. */ -static void -set_completion_defaults (what_to_do) - int what_to_do; -{ - /* Only the completion entry function can change these. */ - rl_filename_completion_desired = 0; - rl_filename_quoting_desired = 1; - rl_completion_type = what_to_do; - rl_completion_suppress_append = rl_completion_suppress_quote = 0; - rl_completion_append_character = ' '; - - /* The completion entry function may optionally change this. */ - rl_completion_mark_symlink_dirs = _rl_complete_mark_symlink_dirs; -} - -/* The user must press "y" or "n". Non-zero return means "y" pressed. */ -static int -get_y_or_n (for_pager) - int for_pager; -{ - int c; - - /* For now, disable pager in callback mode, until we later convert to state - driven functions. Have to wait until next major version to add new - state definition, since it will change value of RL_STATE_DONE. */ -#if defined (READLINE_CALLBACKS) - if (RL_ISSTATE (RL_STATE_CALLBACK)) - return 1; -#endif - - for (;;) - { - RL_SETSTATE(RL_STATE_MOREINPUT); - c = rl_read_key (); - RL_UNSETSTATE(RL_STATE_MOREINPUT); - - if (c == 'y' || c == 'Y' || c == ' ') - return (1); - if (c == 'n' || c == 'N' || c == RUBOUT) - return (0); - if (c == ABORT_CHAR || c < 0) - _rl_abort_internal (); - if (for_pager && (c == NEWLINE || c == RETURN)) - return (2); - if (for_pager && (c == 'q' || c == 'Q')) - return (0); - rl_ding (); - } -} - -static int -_rl_internal_pager (lines) - int lines; -{ - int i; - - fprintf (rl_outstream, "--More--"); - fflush (rl_outstream); - i = get_y_or_n (1); - _rl_erase_entire_line (); - if (i == 0) - return -1; - else if (i == 2) - return (lines - 1); - else - return 0; -} - -static int -path_isdir (filename) - const char *filename; -{ - struct stat finfo; - - return (stat (filename, &finfo) == 0 && S_ISDIR (finfo.st_mode)); -} - -#if defined (VISIBLE_STATS) -/* Return the character which best describes FILENAME. - `@' for symbolic links - `/' for directories - `*' for executables - `=' for sockets - `|' for FIFOs - `%' for character special devices - `#' for block special devices */ -static int -stat_char (filename) - char *filename; -{ - struct stat finfo; - int character, r; - - /* Short-circuit a //server on cygwin, since that will always behave as - a directory. */ -#if __CYGWIN__ - if (filename[0] == '/' && filename[1] == '/' && strchr (filename+2, '/') == 0) - return '/'; -#endif - -#if defined (HAVE_LSTAT) && defined (S_ISLNK) - r = lstat (filename, &finfo); -#else - r = stat (filename, &finfo); -#endif - - if (r == -1) - return (0); - - character = 0; - if (S_ISDIR (finfo.st_mode)) - character = '/'; -#if defined (S_ISCHR) - else if (S_ISCHR (finfo.st_mode)) - character = '%'; -#endif /* S_ISCHR */ -#if defined (S_ISBLK) - else if (S_ISBLK (finfo.st_mode)) - character = '#'; -#endif /* S_ISBLK */ -#if defined (S_ISLNK) - else if (S_ISLNK (finfo.st_mode)) - character = '@'; -#endif /* S_ISLNK */ -#if defined (S_ISSOCK) - else if (S_ISSOCK (finfo.st_mode)) - character = '='; -#endif /* S_ISSOCK */ -#if defined (S_ISFIFO) - else if (S_ISFIFO (finfo.st_mode)) - character = '|'; -#endif - else if (S_ISREG (finfo.st_mode)) - { - if (access (filename, X_OK) == 0) - character = '*'; - } - return (character); -} -#endif /* VISIBLE_STATS */ - -/* Return the portion of PATHNAME that should be output when listing - possible completions. If we are hacking filename completion, we - are only interested in the basename, the portion following the - final slash. Otherwise, we return what we were passed. Since - printing empty strings is not very informative, if we're doing - filename completion, and the basename is the empty string, we look - for the previous slash and return the portion following that. If - there's no previous slash, we just return what we were passed. */ -static char * -printable_part (pathname) - char *pathname; -{ - char *temp, *x; - - if (rl_filename_completion_desired == 0) /* don't need to do anything */ - return (pathname); - - temp = strrchr (pathname, '/'); -#if defined (__MSDOS__) - if (temp == 0 && ISALPHA ((unsigned char)pathname[0]) && pathname[1] == ':') - temp = pathname + 1; -#endif - - if (temp == 0 || *temp == '\0') - return (pathname); - /* If the basename is NULL, we might have a pathname like '/usr/src/'. - Look for a previous slash and, if one is found, return the portion - following that slash. If there's no previous slash, just return the - pathname we were passed. */ - else if (temp[1] == '\0') - { - for (x = temp - 1; x > pathname; x--) - if (*x == '/') - break; - return ((*x == '/') ? x + 1 : pathname); - } - else - return ++temp; -} - -/* Compute width of STRING when displayed on screen by print_filename */ -static int -fnwidth (string) - const char *string; -{ - int width, pos; -#if defined (HANDLE_MULTIBYTE) - mbstate_t ps; - int left, w; - size_t clen; - wchar_t wc; - - left = strlen (string) + 1; - memset (&ps, 0, sizeof (mbstate_t)); -#endif - - width = pos = 0; - while (string[pos]) - { - if (CTRL_CHAR (string[pos]) || string[pos] == RUBOUT) - { - width += 2; - pos++; - } - else - { -#if defined (HANDLE_MULTIBYTE) - clen = mbrtowc (&wc, string + pos, left - pos, &ps); - if (MB_INVALIDCH (clen)) - { - width++; - pos++; - memset (&ps, 0, sizeof (mbstate_t)); - } - else if (MB_NULLWCH (clen)) - break; - else - { - pos += clen; - w = WCWIDTH (wc); - width += (w >= 0) ? w : 1; - } -#else - width++; - pos++; -#endif - } - } - - return width; -} - -#define ELLIPSIS_LEN 3 - -static int -fnprint (to_print, prefix_bytes) - const char *to_print; - int prefix_bytes; -{ - int printed_len, w; - const char *s; -#if defined (HANDLE_MULTIBYTE) - mbstate_t ps; - const char *end; - size_t tlen; - int width; - wchar_t wc; - - end = to_print + strlen (to_print) + 1; - memset (&ps, 0, sizeof (mbstate_t)); -#endif - - printed_len = 0; - - /* Don't print only the ellipsis if the common prefix is one of the - possible completions */ - if (to_print[prefix_bytes] == '\0') - prefix_bytes = 0; - - if (prefix_bytes) - { - char ellipsis; - - ellipsis = (to_print[prefix_bytes] == '.') ? '_' : '.'; - for (w = 0; w < ELLIPSIS_LEN; w++) - putc (ellipsis, rl_outstream); - printed_len = ELLIPSIS_LEN; - } - - s = to_print + prefix_bytes; - while (*s) - { - if (CTRL_CHAR (*s)) - { - putc ('^', rl_outstream); - putc (UNCTRL (*s), rl_outstream); - printed_len += 2; - s++; -#if defined (HANDLE_MULTIBYTE) - memset (&ps, 0, sizeof (mbstate_t)); -#endif - } - else if (*s == RUBOUT) - { - putc ('^', rl_outstream); - putc ('?', rl_outstream); - printed_len += 2; - s++; -#if defined (HANDLE_MULTIBYTE) - memset (&ps, 0, sizeof (mbstate_t)); -#endif - } - else - { -#if defined (HANDLE_MULTIBYTE) - tlen = mbrtowc (&wc, s, end - s, &ps); - if (MB_INVALIDCH (tlen)) - { - tlen = 1; - width = 1; - memset (&ps, 0, sizeof (mbstate_t)); - } - else if (MB_NULLWCH (tlen)) - break; - else - { - w = WCWIDTH (wc); - width = (w >= 0) ? w : 1; - } - fwrite (s, 1, tlen, rl_outstream); - s += tlen; - printed_len += width; -#else - putc (*s, rl_outstream); - s++; - printed_len++; -#endif - } - } - - return printed_len; -} - -/* Output TO_PRINT to rl_outstream. If VISIBLE_STATS is defined and we - are using it, check for and output a single character for `special' - filenames. Return the number of characters we output. */ - -static int -print_filename (to_print, full_pathname, prefix_bytes) - char *to_print, *full_pathname; - int prefix_bytes; -{ - int printed_len, extension_char, slen, tlen; - char *s, c, *new_full_pathname, *dn; - - extension_char = 0; - printed_len = fnprint (to_print, prefix_bytes); - -#if defined (VISIBLE_STATS) - if (rl_filename_completion_desired && (rl_visible_stats || _rl_complete_mark_directories)) -#else - if (rl_filename_completion_desired && _rl_complete_mark_directories) -#endif - { - /* If to_print != full_pathname, to_print is the basename of the - path passed. In this case, we try to expand the directory - name before checking for the stat character. */ - if (to_print != full_pathname) - { - /* Terminate the directory name. */ - c = to_print[-1]; - to_print[-1] = '\0'; - - /* If setting the last slash in full_pathname to a NUL results in - full_pathname being the empty string, we are trying to complete - files in the root directory. If we pass a null string to the - bash directory completion hook, for example, it will expand it - to the current directory. We just want the `/'. */ - if (full_pathname == 0 || *full_pathname == 0) - dn = "/"; - else if (full_pathname[0] != '/') - dn = full_pathname; - else if (full_pathname[1] == 0) - dn = "//"; /* restore trailing slash to `//' */ - else if (full_pathname[1] == '/' && full_pathname[2] == 0) - dn = "/"; /* don't turn /// into // */ - else - dn = full_pathname; - s = tilde_expand (dn); - if (rl_directory_completion_hook) - (*rl_directory_completion_hook) (&s); - - slen = strlen (s); - tlen = strlen (to_print); - new_full_pathname = (char *)xmalloc (slen + tlen + 2); - strcpy (new_full_pathname, s); - if (s[slen - 1] == '/') - slen--; - else - new_full_pathname[slen] = '/'; - new_full_pathname[slen] = '/'; - strcpy (new_full_pathname + slen + 1, to_print); - -#if defined (VISIBLE_STATS) - if (rl_visible_stats) - extension_char = stat_char (new_full_pathname); - else -#endif - if (path_isdir (new_full_pathname)) - extension_char = '/'; - - xfree (new_full_pathname); - to_print[-1] = c; - } - else - { - s = tilde_expand (full_pathname); -#if defined (VISIBLE_STATS) - if (rl_visible_stats) - extension_char = stat_char (s); - else -#endif - if (path_isdir (s)) - extension_char = '/'; - } - - xfree (s); - if (extension_char) - { - putc (extension_char, rl_outstream); - printed_len++; - } - } - - return printed_len; -} - -static char * -rl_quote_filename (s, rtype, qcp) - char *s; - int rtype; - char *qcp; -{ - char *r; - - r = (char *)xmalloc (strlen (s) + 2); - *r = *rl_completer_quote_characters; - strcpy (r + 1, s); - if (qcp) - *qcp = *rl_completer_quote_characters; - return r; -} - -/* Find the bounds of the current word for completion purposes, and leave - rl_point set to the end of the word. This function skips quoted - substrings (characters between matched pairs of characters in - rl_completer_quote_characters). First we try to find an unclosed - quoted substring on which to do matching. If one is not found, we use - the word break characters to find the boundaries of the current word. - We call an application-specific function to decide whether or not a - particular word break character is quoted; if that function returns a - non-zero result, the character does not break a word. This function - returns the opening quote character if we found an unclosed quoted - substring, '\0' otherwise. FP, if non-null, is set to a value saying - which (shell-like) quote characters we found (single quote, double - quote, or backslash) anywhere in the string. DP, if non-null, is set to - the value of the delimiter character that caused a word break. */ - -char -_rl_find_completion_word (fp, dp) - int *fp, *dp; -{ - int scan, end, found_quote, delimiter, pass_next, isbrk; - char quote_char, *brkchars; - - end = rl_point; - found_quote = delimiter = 0; - quote_char = '\0'; - - brkchars = 0; - if (rl_completion_word_break_hook) - brkchars = (*rl_completion_word_break_hook) (); - if (brkchars == 0) - brkchars = rl_completer_word_break_characters; - - if (rl_completer_quote_characters) - { - /* We have a list of characters which can be used in pairs to - quote substrings for the completer. Try to find the start - of an unclosed quoted substring. */ - /* FOUND_QUOTE is set so we know what kind of quotes we found. */ - for (scan = pass_next = 0; scan < end; scan = MB_NEXTCHAR (rl_line_buffer, scan, 1, MB_FIND_ANY)) - { - if (pass_next) - { - pass_next = 0; - continue; - } - - /* Shell-like semantics for single quotes -- don't allow backslash - to quote anything in single quotes, especially not the closing - quote. If you don't like this, take out the check on the value - of quote_char. */ - if (quote_char != '\'' && rl_line_buffer[scan] == '\\') - { - pass_next = 1; - found_quote |= RL_QF_BACKSLASH; - continue; - } - - if (quote_char != '\0') - { - /* Ignore everything until the matching close quote char. */ - if (rl_line_buffer[scan] == quote_char) - { - /* Found matching close. Abandon this substring. */ - quote_char = '\0'; - rl_point = end; - } - } - else if (strchr (rl_completer_quote_characters, rl_line_buffer[scan])) - { - /* Found start of a quoted substring. */ - quote_char = rl_line_buffer[scan]; - rl_point = scan + 1; - /* Shell-like quoting conventions. */ - if (quote_char == '\'') - found_quote |= RL_QF_SINGLE_QUOTE; - else if (quote_char == '"') - found_quote |= RL_QF_DOUBLE_QUOTE; - else - found_quote |= RL_QF_OTHER_QUOTE; - } - } - } - - if (rl_point == end && quote_char == '\0') - { - /* We didn't find an unclosed quoted substring upon which to do - completion, so use the word break characters to find the - substring on which to complete. */ - while (rl_point = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_ANY)) - { - scan = rl_line_buffer[rl_point]; - - if (strchr (brkchars, scan) == 0) - continue; - - /* Call the application-specific function to tell us whether - this word break character is quoted and should be skipped. */ - if (rl_char_is_quoted_p && found_quote && - (*rl_char_is_quoted_p) (rl_line_buffer, rl_point)) - continue; - - /* Convoluted code, but it avoids an n^2 algorithm with calls - to char_is_quoted. */ - break; - } - } - - /* If we are at an unquoted word break, then advance past it. */ - scan = rl_line_buffer[rl_point]; - - /* If there is an application-specific function to say whether or not - a character is quoted and we found a quote character, let that - function decide whether or not a character is a word break, even - if it is found in rl_completer_word_break_characters. Don't bother - if we're at the end of the line, though. */ - if (scan) - { - if (rl_char_is_quoted_p) - isbrk = (found_quote == 0 || - (*rl_char_is_quoted_p) (rl_line_buffer, rl_point) == 0) && - strchr (brkchars, scan) != 0; - else - isbrk = strchr (brkchars, scan) != 0; - - if (isbrk) - { - /* If the character that caused the word break was a quoting - character, then remember it as the delimiter. */ - if (rl_basic_quote_characters && - strchr (rl_basic_quote_characters, scan) && - (end - rl_point) > 1) - delimiter = scan; - - /* If the character isn't needed to determine something special - about what kind of completion to perform, then advance past it. */ - if (rl_special_prefixes == 0 || strchr (rl_special_prefixes, scan) == 0) - rl_point++; - } - } - - if (fp) - *fp = found_quote; - if (dp) - *dp = delimiter; - - return (quote_char); -} - -static char ** -gen_completion_matches (text, start, end, our_func, found_quote, quote_char) - char *text; - int start, end; - rl_compentry_func_t *our_func; - int found_quote, quote_char; -{ - char **matches; - - rl_completion_found_quote = found_quote; - rl_completion_quote_character = quote_char; - - /* If the user wants to TRY to complete, but then wants to give - up and use the default completion function, they set the - variable rl_attempted_completion_function. */ - if (rl_attempted_completion_function) - { - matches = (*rl_attempted_completion_function) (text, start, end); - if (RL_SIG_RECEIVED()) - { - _rl_free_match_list (matches); - matches = 0; - RL_CHECK_SIGNALS (); - } - - if (matches || rl_attempted_completion_over) - { - rl_attempted_completion_over = 0; - return (matches); - } - } - - /* XXX -- filename dequoting moved into rl_filename_completion_function */ - - /* rl_completion_matches will check for signals as well to avoid a long - delay while reading a directory. */ - matches = rl_completion_matches (text, our_func); - if (RL_SIG_RECEIVED()) - { - _rl_free_match_list (matches); - matches = 0; - RL_CHECK_SIGNALS (); - } - return matches; -} - -/* Filter out duplicates in MATCHES. This frees up the strings in - MATCHES. */ -static char ** -remove_duplicate_matches (matches) - char **matches; -{ - char *lowest_common; - int i, j, newlen; - char dead_slot; - char **temp_array; - - /* Sort the items. */ - for (i = 0; matches[i]; i++) - ; - - /* Sort the array without matches[0], since we need it to - stay in place no matter what. */ - if (i && rl_sort_completion_matches) - qsort (matches+1, i-1, sizeof (char *), (QSFUNC *)_rl_qsort_string_compare); - - /* Remember the lowest common denominator for it may be unique. */ - lowest_common = savestring (matches[0]); - - for (i = newlen = 0; matches[i + 1]; i++) - { - if (strcmp (matches[i], matches[i + 1]) == 0) - { - xfree (matches[i]); - matches[i] = (char *)&dead_slot; - } - else - newlen++; - } - - /* We have marked all the dead slots with (char *)&dead_slot. - Copy all the non-dead entries into a new array. */ - temp_array = (char **)xmalloc ((3 + newlen) * sizeof (char *)); - for (i = j = 1; matches[i]; i++) - { - if (matches[i] != (char *)&dead_slot) - temp_array[j++] = matches[i]; - } - temp_array[j] = (char *)NULL; - - if (matches[0] != (char *)&dead_slot) - xfree (matches[0]); - - /* Place the lowest common denominator back in [0]. */ - temp_array[0] = lowest_common; - - /* If there is one string left, and it is identical to the - lowest common denominator, then the LCD is the string to - insert. */ - if (j == 2 && strcmp (temp_array[0], temp_array[1]) == 0) - { - xfree (temp_array[1]); - temp_array[1] = (char *)NULL; - } - return (temp_array); -} - -/* Find the common prefix of the list of matches, and put it into - matches[0]. */ -static int -compute_lcd_of_matches (match_list, matches, text) - char **match_list; - int matches; - const char *text; -{ - register int i, c1, c2, si; - int low; /* Count of max-matched characters. */ - char *dtext; /* dequoted TEXT, if needed */ -#if defined (HANDLE_MULTIBYTE) - int v; - mbstate_t ps1, ps2; - wchar_t wc1, wc2; -#endif - - /* If only one match, just use that. Otherwise, compare each - member of the list with the next, finding out where they - stop matching. */ - if (matches == 1) - { - match_list[0] = match_list[1]; - match_list[1] = (char *)NULL; - return 1; - } - - for (i = 1, low = 100000; i < matches; i++) - { -#if defined (HANDLE_MULTIBYTE) - if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - { - memset (&ps1, 0, sizeof (mbstate_t)); - memset (&ps2, 0, sizeof (mbstate_t)); - } -#endif - if (_rl_completion_case_fold) - { - for (si = 0; - (c1 = _rl_to_lower(match_list[i][si])) && - (c2 = _rl_to_lower(match_list[i + 1][si])); - si++) -#if defined (HANDLE_MULTIBYTE) - if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - { - v = mbrtowc (&wc1, match_list[i]+si, strlen (match_list[i]+si), &ps1); - mbrtowc (&wc2, match_list[i+1]+si, strlen (match_list[i+1]+si), &ps2); - wc1 = towlower (wc1); - wc2 = towlower (wc2); - if (wc1 != wc2) - break; - else if (v > 1) - si += v - 1; - } - else -#endif - if (c1 != c2) - break; - } - else - { - for (si = 0; - (c1 = match_list[i][si]) && - (c2 = match_list[i + 1][si]); - si++) -#if defined (HANDLE_MULTIBYTE) - if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - { - mbstate_t ps_back; - ps_back = ps1; - if (!_rl_compare_chars (match_list[i], si, &ps1, match_list[i+1], si, &ps2)) - break; - else if ((v = _rl_get_char_len (&match_list[i][si], &ps_back)) > 1) - si += v - 1; - } - else -#endif - if (c1 != c2) - break; - } - - if (low > si) - low = si; - } - - /* If there were multiple matches, but none matched up to even the - first character, and the user typed something, use that as the - value of matches[0]. */ - if (low == 0 && text && *text) - { - match_list[0] = (char *)xmalloc (strlen (text) + 1); - strcpy (match_list[0], text); - } - else - { - match_list[0] = (char *)xmalloc (low + 1); - - /* XXX - this might need changes in the presence of multibyte chars */ - - /* If we are ignoring case, try to preserve the case of the string - the user typed in the face of multiple matches differing in case. */ - if (_rl_completion_case_fold) - { - /* We're making an assumption here: - IF we're completing filenames AND - the application has defined a filename dequoting function AND - we found a quote character AND - the application has requested filename quoting - THEN - we assume that TEXT was dequoted before checking against - the file system and needs to be dequoted here before we - check against the list of matches - FI */ - dtext = (char *)NULL; - if (rl_filename_completion_desired && - rl_filename_dequoting_function && - rl_completion_found_quote && - rl_filename_quoting_desired) - { - dtext = (*rl_filename_dequoting_function) ((char *)text, rl_completion_quote_character); - text = dtext; - } - - /* sort the list to get consistent answers. */ - qsort (match_list+1, matches, sizeof(char *), (QSFUNC *)_rl_qsort_string_compare); - - si = strlen (text); - if (si <= low) - { - for (i = 1; i <= matches; i++) - if (strncmp (match_list[i], text, si) == 0) - { - strncpy (match_list[0], match_list[i], low); - break; - } - /* no casematch, use first entry */ - if (i > matches) - strncpy (match_list[0], match_list[1], low); - } - else - /* otherwise, just use the text the user typed. */ - strncpy (match_list[0], text, low); - - FREE (dtext); - } - else - strncpy (match_list[0], match_list[1], low); - - match_list[0][low] = '\0'; - } - - return matches; -} - -static int -postprocess_matches (matchesp, matching_filenames) - char ***matchesp; - int matching_filenames; -{ - char *t, **matches, **temp_matches; - int nmatch, i; - - matches = *matchesp; - - if (matches == 0) - return 0; - - /* It seems to me that in all the cases we handle we would like - to ignore duplicate possiblilities. Scan for the text to - insert being identical to the other completions. */ - if (rl_ignore_completion_duplicates) - { - temp_matches = remove_duplicate_matches (matches); - xfree (matches); - matches = temp_matches; - } - - /* If we are matching filenames, then here is our chance to - do clever processing by re-examining the list. Call the - ignore function with the array as a parameter. It can - munge the array, deleting matches as it desires. */ - if (rl_ignore_some_completions_function && matching_filenames) - { - for (nmatch = 1; matches[nmatch]; nmatch++) - ; - (void)(*rl_ignore_some_completions_function) (matches); - if (matches == 0 || matches[0] == 0) - { - FREE (matches); - *matchesp = (char **)0; - return 0; - } - else - { - /* If we removed some matches, recompute the common prefix. */ - for (i = 1; matches[i]; i++) - ; - if (i > 1 && i < nmatch) - { - t = matches[0]; - compute_lcd_of_matches (matches, i - 1, t); - FREE (t); - } - } - } - - *matchesp = matches; - return (1); -} - -static int -complete_get_screenwidth () -{ - int cols; - char *envcols; - - cols = _rl_completion_columns; - if (cols >= 0 && cols <= _rl_screenwidth) - return cols; - envcols = getenv ("COLUMNS"); - if (envcols && *envcols) - cols = atoi (envcols); - if (cols >= 0 && cols <= _rl_screenwidth) - return cols; - return _rl_screenwidth; -} - -/* A convenience function for displaying a list of strings in - columnar format on readline's output stream. MATCHES is the list - of strings, in argv format, LEN is the number of strings in MATCHES, - and MAX is the length of the longest string in MATCHES. */ -void -rl_display_match_list (matches, len, max) - char **matches; - int len, max; -{ - int count, limit, printed_len, lines, cols; - int i, j, k, l, common_length, sind; - char *temp, *t; - - /* Find the length of the prefix common to all items: length as displayed - characters (common_length) and as a byte index into the matches (sind) */ - common_length = sind = 0; - if (_rl_completion_prefix_display_length > 0) - { - t = printable_part (matches[0]); - temp = strrchr (t, '/'); - common_length = temp ? fnwidth (temp) : fnwidth (t); - sind = temp ? strlen (temp) : strlen (t); - - if (common_length > _rl_completion_prefix_display_length && common_length > ELLIPSIS_LEN) - max -= common_length - ELLIPSIS_LEN; - else - common_length = sind = 0; - } - - /* How many items of MAX length can we fit in the screen window? */ - cols = complete_get_screenwidth (); - max += 2; - limit = cols / max; - if (limit != 1 && (limit * max == cols)) - limit--; - - /* If cols == 0, limit will end up -1 */ - if (cols < _rl_screenwidth && limit < 0) - limit = 1; - - /* Avoid a possible floating exception. If max > cols, - limit will be 0 and a divide-by-zero fault will result. */ - if (limit == 0) - limit = 1; - - /* How many iterations of the printing loop? */ - count = (len + (limit - 1)) / limit; - - /* Watch out for special case. If LEN is less than LIMIT, then - just do the inner printing loop. - 0 < len <= limit implies count = 1. */ - - /* Sort the items if they are not already sorted. */ - if (rl_ignore_completion_duplicates == 0 && rl_sort_completion_matches) - qsort (matches + 1, len, sizeof (char *), (QSFUNC *)_rl_qsort_string_compare); - - rl_crlf (); - - lines = 0; - if (_rl_print_completions_horizontally == 0) - { - /* Print the sorted items, up-and-down alphabetically, like ls. */ - for (i = 1; i <= count; i++) - { - for (j = 0, l = i; j < limit; j++) - { - if (l > len || matches[l] == 0) - break; - else - { - temp = printable_part (matches[l]); - printed_len = print_filename (temp, matches[l], sind); - - if (j + 1 < limit) - for (k = 0; k < max - printed_len; k++) - putc (' ', rl_outstream); - } - l += count; - } - rl_crlf (); - lines++; - if (_rl_page_completions && lines >= (_rl_screenheight - 1) && i < count) - { - lines = _rl_internal_pager (lines); - if (lines < 0) - return; - } - } - } - else - { - /* Print the sorted items, across alphabetically, like ls -x. */ - for (i = 1; matches[i]; i++) - { - temp = printable_part (matches[i]); - printed_len = print_filename (temp, matches[i], sind); - /* Have we reached the end of this line? */ - if (matches[i+1]) - { - if (i && (limit > 1) && (i % limit) == 0) - { - rl_crlf (); - lines++; - if (_rl_page_completions && lines >= _rl_screenheight - 1) - { - lines = _rl_internal_pager (lines); - if (lines < 0) - return; - } - } - else - for (k = 0; k < max - printed_len; k++) - putc (' ', rl_outstream); - } - } - rl_crlf (); - } -} - -/* Display MATCHES, a list of matching filenames in argv format. This - handles the simple case -- a single match -- first. If there is more - than one match, we compute the number of strings in the list and the - length of the longest string, which will be needed by the display - function. If the application wants to handle displaying the list of - matches itself, it sets RL_COMPLETION_DISPLAY_MATCHES_HOOK to the - address of a function, and we just call it. If we're handling the - display ourselves, we just call rl_display_match_list. We also check - that the list of matches doesn't exceed the user-settable threshold, - and ask the user if he wants to see the list if there are more matches - than RL_COMPLETION_QUERY_ITEMS. */ -static void -display_matches (matches) - char **matches; -{ - int len, max, i; - char *temp; - - /* Move to the last visible line of a possibly-multiple-line command. */ - _rl_move_vert (_rl_vis_botlin); - - /* Handle simple case first. What if there is only one answer? */ - if (matches[1] == 0) - { - temp = printable_part (matches[0]); - rl_crlf (); - print_filename (temp, matches[0], 0); - rl_crlf (); - - rl_forced_update_display (); - rl_display_fixed = 1; - - return; - } - - /* There is more than one answer. Find out how many there are, - and find the maximum printed length of a single entry. */ - for (max = 0, i = 1; matches[i]; i++) - { - temp = printable_part (matches[i]); - len = fnwidth (temp); - - if (len > max) - max = len; - } - - len = i - 1; - - /* If the caller has defined a display hook, then call that now. */ - if (rl_completion_display_matches_hook) - { - (*rl_completion_display_matches_hook) (matches, len, max); - return; - } - - /* If there are many items, then ask the user if she really wants to - see them all. */ - if (rl_completion_query_items > 0 && len >= rl_completion_query_items) - { - rl_crlf (); - fprintf (rl_outstream, "Display all %d possibilities? (y or n)", len); - fflush (rl_outstream); - if ((completion_y_or_n = get_y_or_n (0)) == 0) - { - rl_crlf (); - - rl_forced_update_display (); - rl_display_fixed = 1; - - return; - } - } - - rl_display_match_list (matches, len, max); - - rl_forced_update_display (); - rl_display_fixed = 1; -} - -static char * -make_quoted_replacement (match, mtype, qc) - char *match; - int mtype; - char *qc; /* Pointer to quoting character, if any */ -{ - int should_quote, do_replace; - char *replacement; - - /* If we are doing completion on quoted substrings, and any matches - contain any of the completer_word_break_characters, then auto- - matically prepend the substring with a quote character (just pick - the first one from the list of such) if it does not already begin - with a quote string. FIXME: Need to remove any such automatically - inserted quote character when it no longer is necessary, such as - if we change the string we are completing on and the new set of - matches don't require a quoted substring. */ - replacement = match; - - should_quote = match && rl_completer_quote_characters && - rl_filename_completion_desired && - rl_filename_quoting_desired; - - if (should_quote) - should_quote = should_quote && (!qc || !*qc || - (rl_completer_quote_characters && strchr (rl_completer_quote_characters, *qc))); - - if (should_quote) - { - /* If there is a single match, see if we need to quote it. - This also checks whether the common prefix of several - matches needs to be quoted. */ - should_quote = rl_filename_quote_characters - ? (_rl_strpbrk (match, rl_filename_quote_characters) != 0) - : 0; - - do_replace = should_quote ? mtype : NO_MATCH; - /* Quote the replacement, since we found an embedded - word break character in a potential match. */ - if (do_replace != NO_MATCH && rl_filename_quoting_function) - replacement = (*rl_filename_quoting_function) (match, do_replace, qc); - } - return (replacement); -} - -static void -insert_match (match, start, mtype, qc) - char *match; - int start, mtype; - char *qc; -{ - char *replacement, *r; - char oqc; - int end, rlen; - - oqc = qc ? *qc : '\0'; - replacement = make_quoted_replacement (match, mtype, qc); - - /* Now insert the match. */ - if (replacement) - { - rlen = strlen (replacement); - /* Don't double an opening quote character. */ - if (qc && *qc && start && rl_line_buffer[start - 1] == *qc && - replacement[0] == *qc) - start--; - /* If make_quoted_replacement changed the quoting character, remove - the opening quote and insert the (fully-quoted) replacement. */ - else if (qc && (*qc != oqc) && start && rl_line_buffer[start - 1] == oqc && - replacement[0] != oqc) - start--; - end = rl_point - 1; - /* Don't double a closing quote character */ - if (qc && *qc && end && rl_line_buffer[rl_point] == *qc && replacement[rlen - 1] == *qc) - end++; - if (_rl_skip_completed_text) - { - r = replacement; - while (start < rl_end && *r && rl_line_buffer[start] == *r) - { - start++; - r++; - } - if (start <= end || *r) - _rl_replace_text (r, start, end); - rl_point = start + strlen (r); - } - else - _rl_replace_text (replacement, start, end); - if (replacement != match) - xfree (replacement); - } -} - -/* Append any necessary closing quote and a separator character to the - just-inserted match. If the user has specified that directories - should be marked by a trailing `/', append one of those instead. The - default trailing character is a space. Returns the number of characters - appended. If NONTRIVIAL_MATCH is set, we test for a symlink (if the OS - has them) and don't add a suffix for a symlink to a directory. A - nontrivial match is one that actually adds to the word being completed. - The variable rl_completion_mark_symlink_dirs controls this behavior - (it's initially set to the what the user has chosen, indicated by the - value of _rl_complete_mark_symlink_dirs, but may be modified by an - application's completion function). */ -static int -append_to_match (text, delimiter, quote_char, nontrivial_match) - char *text; - int delimiter, quote_char, nontrivial_match; -{ - char temp_string[4], *filename; - int temp_string_index, s; - struct stat finfo; - - temp_string_index = 0; - if (quote_char && rl_point && rl_completion_suppress_quote == 0 && - rl_line_buffer[rl_point - 1] != quote_char) - temp_string[temp_string_index++] = quote_char; - - if (delimiter) - temp_string[temp_string_index++] = delimiter; - else if (rl_completion_suppress_append == 0 && rl_completion_append_character) - temp_string[temp_string_index++] = rl_completion_append_character; - - temp_string[temp_string_index++] = '\0'; - - if (rl_filename_completion_desired) - { - filename = tilde_expand (text); - if (rl_filename_stat_hook) - (*rl_filename_stat_hook) (&filename); - s = (nontrivial_match && rl_completion_mark_symlink_dirs == 0) - ? LSTAT (filename, &finfo) - : stat (filename, &finfo); - if (s == 0 && S_ISDIR (finfo.st_mode)) - { - if (_rl_complete_mark_directories /* && rl_completion_suppress_append == 0 */) - { - /* This is clumsy. Avoid putting in a double slash if point - is at the end of the line and the previous character is a - slash. */ - if (rl_point && rl_line_buffer[rl_point] == '\0' && rl_line_buffer[rl_point - 1] == '/') - ; - else if (rl_line_buffer[rl_point] != '/') - rl_insert_text ("/"); - } - } -#ifdef S_ISLNK - /* Don't add anything if the filename is a symlink and resolves to a - directory. */ - else if (s == 0 && S_ISLNK (finfo.st_mode) && path_isdir (filename)) - ; -#endif - else - { - if (rl_point == rl_end && temp_string_index) - rl_insert_text (temp_string); - } - xfree (filename); - } - else - { - if (rl_point == rl_end && temp_string_index) - rl_insert_text (temp_string); - } - - return (temp_string_index); -} - -static void -insert_all_matches (matches, point, qc) - char **matches; - int point; - char *qc; -{ - int i; - char *rp; - - rl_begin_undo_group (); - /* remove any opening quote character; make_quoted_replacement will add - it back. */ - if (qc && *qc && point && rl_line_buffer[point - 1] == *qc) - point--; - rl_delete_text (point, rl_point); - rl_point = point; - - if (matches[1]) - { - for (i = 1; matches[i]; i++) - { - rp = make_quoted_replacement (matches[i], SINGLE_MATCH, qc); - rl_insert_text (rp); - rl_insert_text (" "); - if (rp != matches[i]) - xfree (rp); - } - } - else - { - rp = make_quoted_replacement (matches[0], SINGLE_MATCH, qc); - rl_insert_text (rp); - rl_insert_text (" "); - if (rp != matches[0]) - xfree (rp); - } - rl_end_undo_group (); -} - -void -_rl_free_match_list (matches) - char **matches; -{ - register int i; - - if (matches == 0) - return; - - for (i = 0; matches[i]; i++) - xfree (matches[i]); - xfree (matches); -} - -/* Complete the word at or before point. - WHAT_TO_DO says what to do with the completion. - `?' means list the possible completions. - TAB means do standard completion. - `*' means insert all of the possible completions. - `!' means to do standard completion, and list all possible completions if - there is more than one. - `@' means to do standard completion, and list all possible completions if - there is more than one and partial completion is not possible. */ -int -rl_complete_internal (what_to_do) - int what_to_do; -{ - char **matches; - rl_compentry_func_t *our_func; - int start, end, delimiter, found_quote, i, nontrivial_lcd; - char *text, *saved_line_buffer; - char quote_char; -#if 1 - int tlen, mlen; -#endif - - RL_SETSTATE(RL_STATE_COMPLETING); - - set_completion_defaults (what_to_do); - - saved_line_buffer = rl_line_buffer ? savestring (rl_line_buffer) : (char *)NULL; - our_func = rl_completion_entry_function - ? rl_completion_entry_function - : rl_filename_completion_function; - /* We now look backwards for the start of a filename/variable word. */ - end = rl_point; - found_quote = delimiter = 0; - quote_char = '\0'; - - if (rl_point) - /* This (possibly) changes rl_point. If it returns a non-zero char, - we know we have an open quote. */ - quote_char = _rl_find_completion_word (&found_quote, &delimiter); - - start = rl_point; - rl_point = end; - - text = rl_copy_text (start, end); - matches = gen_completion_matches (text, start, end, our_func, found_quote, quote_char); - /* nontrivial_lcd is set if the common prefix adds something to the word - being completed. */ - nontrivial_lcd = matches && strcmp (text, matches[0]) != 0; - if (what_to_do == '!' || what_to_do == '@') - tlen = strlen (text); - xfree (text); - - if (matches == 0) - { - rl_ding (); - FREE (saved_line_buffer); - completion_changed_buffer = 0; - RL_UNSETSTATE(RL_STATE_COMPLETING); - _rl_reset_completion_state (); - return (0); - } - - /* If we are matching filenames, the attempted completion function will - have set rl_filename_completion_desired to a non-zero value. The basic - rl_filename_completion_function does this. */ - i = rl_filename_completion_desired; - - if (postprocess_matches (&matches, i) == 0) - { - rl_ding (); - FREE (saved_line_buffer); - completion_changed_buffer = 0; - RL_UNSETSTATE(RL_STATE_COMPLETING); - _rl_reset_completion_state (); - return (0); - } - - switch (what_to_do) - { - case TAB: - case '!': - case '@': - /* Insert the first match with proper quoting. */ - if (what_to_do == TAB) - { - if (*matches[0]) - insert_match (matches[0], start, matches[1] ? MULT_MATCH : SINGLE_MATCH, "e_char); - } - else if (*matches[0] && matches[1] == 0) - /* should we perform the check only if there are multiple matches? */ - insert_match (matches[0], start, matches[1] ? MULT_MATCH : SINGLE_MATCH, "e_char); - else if (*matches[0]) /* what_to_do != TAB && multiple matches */ - { - mlen = *matches[0] ? strlen (matches[0]) : 0; - if (mlen >= tlen) - insert_match (matches[0], start, matches[1] ? MULT_MATCH : SINGLE_MATCH, "e_char); - } - - /* If there are more matches, ring the bell to indicate. - If we are in vi mode, Posix.2 says to not ring the bell. - If the `show-all-if-ambiguous' variable is set, display - all the matches immediately. Otherwise, if this was the - only match, and we are hacking files, check the file to - see if it was a directory. If so, and the `mark-directories' - variable is set, add a '/' to the name. If not, and we - are at the end of the line, then add a space. */ - if (matches[1]) - { - if (what_to_do == '!') - { - display_matches (matches); - break; - } - else if (what_to_do == '@') - { - if (nontrivial_lcd == 0) - display_matches (matches); - break; - } - else if (rl_editing_mode != vi_mode) - rl_ding (); /* There are other matches remaining. */ - } - else - append_to_match (matches[0], delimiter, quote_char, nontrivial_lcd); - - break; - - case '*': - insert_all_matches (matches, start, "e_char); - break; - - case '?': - if (rl_completion_display_matches_hook == 0) - { - _rl_sigcleanup = _rl_complete_sigcleanup; - _rl_sigcleanarg = matches; - } - display_matches (matches); - _rl_sigcleanup = 0; - _rl_sigcleanarg = 0; - break; - - default: - _rl_ttymsg ("bad value %d for what_to_do in rl_complete", what_to_do); - rl_ding (); - FREE (saved_line_buffer); - RL_UNSETSTATE(RL_STATE_COMPLETING); - _rl_free_match_list (matches); - _rl_reset_completion_state (); - return 1; - } - - _rl_free_match_list (matches); - - /* Check to see if the line has changed through all of this manipulation. */ - if (saved_line_buffer) - { - completion_changed_buffer = strcmp (rl_line_buffer, saved_line_buffer) != 0; - xfree (saved_line_buffer); - } - - RL_UNSETSTATE(RL_STATE_COMPLETING); - _rl_reset_completion_state (); - return 0; -} - -/***************************************************************/ -/* */ -/* Application-callable completion match generator functions */ -/* */ -/***************************************************************/ - -/* Return an array of (char *) which is a list of completions for TEXT. - If there are no completions, return a NULL pointer. - The first entry in the returned array is the substitution for TEXT. - The remaining entries are the possible completions. - The array is terminated with a NULL pointer. - - ENTRY_FUNCTION is a function of two args, and returns a (char *). - The first argument is TEXT. - The second is a state argument; it should be zero on the first call, and - non-zero on subsequent calls. It returns a NULL pointer to the caller - when there are no more matches. - */ -char ** -rl_completion_matches (text, entry_function) - const char *text; - rl_compentry_func_t *entry_function; -{ - register int i; - - /* Number of slots in match_list. */ - int match_list_size; - - /* The list of matches. */ - char **match_list; - - /* Number of matches actually found. */ - int matches; - - /* Temporary string binder. */ - char *string; - - matches = 0; - match_list_size = 10; - match_list = (char **)xmalloc ((match_list_size + 1) * sizeof (char *)); - match_list[1] = (char *)NULL; - - while (string = (*entry_function) (text, matches)) - { - if (RL_SIG_RECEIVED ()) - { - /* Start at 1 because we don't set matches[0] in this function. - Only free the list members if we're building match list from - rl_filename_completion_function, since we know that doesn't - free the strings it returns. */ - if (entry_function == rl_filename_completion_function) - { - for (i = 1; match_list[i]; i++) - xfree (match_list[i]); - } - xfree (match_list); - match_list = 0; - match_list_size = 0; - RL_CHECK_SIGNALS (); - } - - if (matches + 1 == match_list_size) - match_list = (char **)xrealloc - (match_list, ((match_list_size += 10) + 1) * sizeof (char *)); - - match_list[++matches] = string; - match_list[matches + 1] = (char *)NULL; - } - - /* If there were any matches, then look through them finding out the - lowest common denominator. That then becomes match_list[0]. */ - if (matches) - compute_lcd_of_matches (match_list, matches, text); - else /* There were no matches. */ - { - xfree (match_list); - match_list = (char **)NULL; - } - return (match_list); -} - -/* A completion function for usernames. - TEXT contains a partial username preceded by a random - character (usually `~'). */ -char * -rl_username_completion_function (text, state) - const char *text; - int state; -{ -#if defined (__WIN32__) || defined (__OPENNT) - return (char *)NULL; -#else /* !__WIN32__ && !__OPENNT) */ - static char *username = (char *)NULL; - static struct passwd *entry; - static int namelen, first_char, first_char_loc; - char *value; - - if (state == 0) - { - FREE (username); - - first_char = *text; - first_char_loc = first_char == '~'; - - username = savestring (&text[first_char_loc]); - namelen = strlen (username); - setpwent (); - } - -#if defined (HAVE_GETPWENT) - while (entry = getpwent ()) - { - /* Null usernames should result in all users as possible completions. */ - if (namelen == 0 || (STREQN (username, entry->pw_name, namelen))) - break; - } -#endif - - if (entry == 0) - { -#if defined (HAVE_GETPWENT) - endpwent (); -#endif - return ((char *)NULL); - } - else - { - value = (char *)xmalloc (2 + strlen (entry->pw_name)); - - *value = *text; - - strcpy (value + first_char_loc, entry->pw_name); - - if (first_char == '~') - rl_filename_completion_desired = 1; - - return (value); - } -#endif /* !__WIN32__ && !__OPENNT */ -} - -/* Return non-zero if CONVFN matches FILENAME up to the length of FILENAME - (FILENAME_LEN). If _rl_completion_case_fold is set, compare without - regard to the alphabetic case of characters. CONVFN is the possibly- - converted directory entry; FILENAME is what the user typed. */ -static int -complete_fncmp (convfn, convlen, filename, filename_len) - const char *convfn; - int convlen; - const char *filename; - int filename_len; -{ - register char *s1, *s2; - int d, len; - - /* Otherwise, if these match up to the length of filename, then - it is a match. */ - if (_rl_completion_case_fold && _rl_completion_case_map) - { - /* Case-insensitive comparison treating _ and - as equivalent */ - if (filename_len == 0) - return 1; - if (convlen < filename_len) - return 0; - s1 = (char *)convfn; - s2 = (char *)filename; - len = filename_len; - do - { - d = _rl_to_lower (*s1) - _rl_to_lower (*s2); - /* *s1 == [-_] && *s2 == [-_] */ - if ((*s1 == '-' || *s1 == '_') && (*s2 == '-' || *s2 == '_')) - d = 0; - if (d != 0) - return 0; - s1++; s2++; /* already checked convlen >= filename_len */ - } - while (--len != 0); - return 1; - } - else if (_rl_completion_case_fold) - { - if ((_rl_to_lower (convfn[0]) == _rl_to_lower (filename[0])) && - (convlen >= filename_len) && - (_rl_strnicmp (filename, convfn, filename_len) == 0)) - return 1; - } - else - { - if ((convfn[0] == filename[0]) && - (convlen >= filename_len) && - (strncmp (filename, convfn, filename_len) == 0)) - return 1; - } - return 0; -} - -/* Okay, now we write the entry_function for filename completion. In the - general case. Note that completion in the shell is a little different - because of all the pathnames that must be followed when looking up the - completion for a command. */ -char * -rl_filename_completion_function (text, state) - const char *text; - int state; -{ - static DIR *directory = (DIR *)NULL; - static char *filename = (char *)NULL; - static char *dirname = (char *)NULL; - static char *users_dirname = (char *)NULL; - static int filename_len; - char *temp, *dentry, *convfn; - int dirlen, dentlen, convlen; - struct dirent *entry; - - /* If we don't have any state, then do some initialization. */ - if (state == 0) - { - /* If we were interrupted before closing the directory or reading - all of its contents, close it. */ - if (directory) - { - closedir (directory); - directory = (DIR *)NULL; - } - FREE (dirname); - FREE (filename); - FREE (users_dirname); - - filename = savestring (text); - if (*text == 0) - text = "."; - dirname = savestring (text); - - temp = strrchr (dirname, '/'); - -#if defined (__MSDOS__) - /* special hack for //X/... */ - if (dirname[0] == '/' && dirname[1] == '/' && ISALPHA ((unsigned char)dirname[2]) && dirname[3] == '/') - temp = strrchr (dirname + 3, '/'); -#endif - - if (temp) - { - strcpy (filename, ++temp); - *temp = '\0'; - } -#if defined (__MSDOS__) - /* searches from current directory on the drive */ - else if (ISALPHA ((unsigned char)dirname[0]) && dirname[1] == ':') - { - strcpy (filename, dirname + 2); - dirname[2] = '\0'; - } -#endif - else - { - dirname[0] = '.'; - dirname[1] = '\0'; - } - - /* We aren't done yet. We also support the "~user" syntax. */ - - /* Save the version of the directory that the user typed, dequoting - it if necessary. */ - if (rl_completion_found_quote && rl_filename_dequoting_function) - users_dirname = (*rl_filename_dequoting_function) (dirname, rl_completion_quote_character); - else - users_dirname = savestring (dirname); - - if (*dirname == '~') - { - temp = tilde_expand (dirname); - xfree (dirname); - dirname = temp; - } - - /* We have saved the possibly-dequoted version of the directory name - the user typed. Now transform the directory name we're going to - pass to opendir(2). The directory rewrite hook modifies only the - directory name; the directory completion hook modifies both the - directory name passed to opendir(2) and the version the user - typed. Both the directory completion and rewrite hooks should perform - any necessary dequoting. The hook functions return 1 if they modify - the directory name argument. If either hook returns 0, it should - not modify the directory name pointer passed as an argument. */ - if (rl_directory_rewrite_hook) - (*rl_directory_rewrite_hook) (&dirname); - else if (rl_directory_completion_hook && (*rl_directory_completion_hook) (&dirname)) - { - xfree (users_dirname); - users_dirname = savestring (dirname); - } - else if (rl_completion_found_quote && rl_filename_dequoting_function) - { - /* delete single and double quotes */ - xfree (dirname); - dirname = savestring (users_dirname); - } - directory = opendir (dirname); - - /* Now dequote a non-null filename. FILENAME will not be NULL, but may - be empty. */ - if (*filename && rl_completion_found_quote && rl_filename_dequoting_function) - { - /* delete single and double quotes */ - temp = (*rl_filename_dequoting_function) (filename, rl_completion_quote_character); - xfree (filename); - filename = temp; - } - filename_len = strlen (filename); - - rl_filename_completion_desired = 1; - } - - /* At this point we should entertain the possibility of hacking wildcarded - filenames, like /usr/man/man/te. If the directory name - contains globbing characters, then build an array of directories, and - then map over that list while completing. */ - /* *** UNIMPLEMENTED *** */ - - /* Now that we have some state, we can read the directory. */ - - entry = (struct dirent *)NULL; - while (directory && (entry = readdir (directory))) - { - convfn = dentry = entry->d_name; - convlen = dentlen = D_NAMLEN (entry); - - if (rl_filename_rewrite_hook) - { - convfn = (*rl_filename_rewrite_hook) (dentry, dentlen); - convlen = (convfn == dentry) ? dentlen : strlen (convfn); - } - - /* Special case for no filename. If the user has disabled the - `match-hidden-files' variable, skip filenames beginning with `.'. - All other entries except "." and ".." match. */ - if (filename_len == 0) - { - if (_rl_match_hidden_files == 0 && HIDDEN_FILE (convfn)) - continue; - - if (convfn[0] != '.' || - (convfn[1] && (convfn[1] != '.' || convfn[2]))) - break; - } - else - { - if (complete_fncmp (convfn, convlen, filename, filename_len)) - break; - } - } - - if (entry == 0) - { - if (directory) - { - closedir (directory); - directory = (DIR *)NULL; - } - if (dirname) - { - xfree (dirname); - dirname = (char *)NULL; - } - if (filename) - { - xfree (filename); - filename = (char *)NULL; - } - if (users_dirname) - { - xfree (users_dirname); - users_dirname = (char *)NULL; - } - - return (char *)NULL; - } - else - { - /* dirname && (strcmp (dirname, ".") != 0) */ - if (dirname && (dirname[0] != '.' || dirname[1])) - { - if (rl_complete_with_tilde_expansion && *users_dirname == '~') - { - dirlen = strlen (dirname); - temp = (char *)xmalloc (2 + dirlen + D_NAMLEN (entry)); - strcpy (temp, dirname); - /* Canonicalization cuts off any final slash present. We - may need to add it back. */ - if (dirname[dirlen - 1] != '/') - { - temp[dirlen++] = '/'; - temp[dirlen] = '\0'; - } - } - else - { - dirlen = strlen (users_dirname); - temp = (char *)xmalloc (2 + dirlen + D_NAMLEN (entry)); - strcpy (temp, users_dirname); - /* Make sure that temp has a trailing slash here. */ - if (users_dirname[dirlen - 1] != '/') - temp[dirlen++] = '/'; - } - - strcpy (temp + dirlen, convfn); - } - else - temp = savestring (convfn); - - if (convfn != dentry) - xfree (convfn); - - return (temp); - } -} - -/* An initial implementation of a menu completion function a la tcsh. The - first time (if the last readline command was not rl_old_menu_complete), we - generate the list of matches. This code is very similar to the code in - rl_complete_internal -- there should be a way to combine the two. Then, - for each item in the list of matches, we insert the match in an undoable - fashion, with the appropriate character appended (this happens on the - second and subsequent consecutive calls to rl_old_menu_complete). When we - hit the end of the match list, we restore the original unmatched text, - ring the bell, and reset the counter to zero. */ -int -rl_old_menu_complete (count, invoking_key) - int count, invoking_key; -{ - rl_compentry_func_t *our_func; - int matching_filenames, found_quote; - - static char *orig_text; - static char **matches = (char **)0; - static int match_list_index = 0; - static int match_list_size = 0; - static int orig_start, orig_end; - static char quote_char; - static int delimiter; - - /* The first time through, we generate the list of matches and set things - up to insert them. */ - if (rl_last_func != rl_old_menu_complete) - { - /* Clean up from previous call, if any. */ - FREE (orig_text); - if (matches) - _rl_free_match_list (matches); - - match_list_index = match_list_size = 0; - matches = (char **)NULL; - - rl_completion_invoking_key = invoking_key; - - RL_SETSTATE(RL_STATE_COMPLETING); - - /* Only the completion entry function can change these. */ - set_completion_defaults ('%'); - - our_func = rl_menu_completion_entry_function; - if (our_func == 0) - our_func = rl_completion_entry_function - ? rl_completion_entry_function - : rl_filename_completion_function; - - /* We now look backwards for the start of a filename/variable word. */ - orig_end = rl_point; - found_quote = delimiter = 0; - quote_char = '\0'; - - if (rl_point) - /* This (possibly) changes rl_point. If it returns a non-zero char, - we know we have an open quote. */ - quote_char = _rl_find_completion_word (&found_quote, &delimiter); - - orig_start = rl_point; - rl_point = orig_end; - - orig_text = rl_copy_text (orig_start, orig_end); - matches = gen_completion_matches (orig_text, orig_start, orig_end, - our_func, found_quote, quote_char); - - /* If we are matching filenames, the attempted completion function will - have set rl_filename_completion_desired to a non-zero value. The basic - rl_filename_completion_function does this. */ - matching_filenames = rl_filename_completion_desired; - - if (matches == 0 || postprocess_matches (&matches, matching_filenames) == 0) - { - rl_ding (); - FREE (matches); - matches = (char **)0; - FREE (orig_text); - orig_text = (char *)0; - completion_changed_buffer = 0; - RL_UNSETSTATE(RL_STATE_COMPLETING); - return (0); - } - - RL_UNSETSTATE(RL_STATE_COMPLETING); - - for (match_list_size = 0; matches[match_list_size]; match_list_size++) - ; - /* matches[0] is lcd if match_list_size > 1, but the circular buffer - code below should take care of it. */ - - if (match_list_size > 1 && _rl_complete_show_all) - display_matches (matches); - } - - /* Now we have the list of matches. Replace the text between - rl_line_buffer[orig_start] and rl_line_buffer[rl_point] with - matches[match_list_index], and add any necessary closing char. */ - - if (matches == 0 || match_list_size == 0) - { - rl_ding (); - FREE (matches); - matches = (char **)0; - completion_changed_buffer = 0; - return (0); - } - - match_list_index += count; - if (match_list_index < 0) - { - while (match_list_index < 0) - match_list_index += match_list_size; - } - else - match_list_index %= match_list_size; - - if (match_list_index == 0 && match_list_size > 1) - { - rl_ding (); - insert_match (orig_text, orig_start, MULT_MATCH, "e_char); - } - else - { - insert_match (matches[match_list_index], orig_start, SINGLE_MATCH, "e_char); - append_to_match (matches[match_list_index], delimiter, quote_char, - strcmp (orig_text, matches[match_list_index])); - } - - completion_changed_buffer = 1; - return (0); -} - -int -rl_menu_complete (count, ignore) - int count, ignore; -{ - rl_compentry_func_t *our_func; - int matching_filenames, found_quote; - - static char *orig_text; - static char **matches = (char **)0; - static int match_list_index = 0; - static int match_list_size = 0; - static int nontrivial_lcd = 0; - static int full_completion = 0; /* set to 1 if menu completion should reinitialize on next call */ - static int orig_start, orig_end; - static char quote_char; - static int delimiter, cstate; - - /* The first time through, we generate the list of matches and set things - up to insert them. */ - if ((rl_last_func != rl_menu_complete && rl_last_func != rl_backward_menu_complete) || full_completion) - { - /* Clean up from previous call, if any. */ - FREE (orig_text); - if (matches) - _rl_free_match_list (matches); - - match_list_index = match_list_size = 0; - matches = (char **)NULL; - - full_completion = 0; - - RL_SETSTATE(RL_STATE_COMPLETING); - - /* Only the completion entry function can change these. */ - set_completion_defaults ('%'); - - our_func = rl_menu_completion_entry_function; - if (our_func == 0) - our_func = rl_completion_entry_function - ? rl_completion_entry_function - : rl_filename_completion_function; - - /* We now look backwards for the start of a filename/variable word. */ - orig_end = rl_point; - found_quote = delimiter = 0; - quote_char = '\0'; - - if (rl_point) - /* This (possibly) changes rl_point. If it returns a non-zero char, - we know we have an open quote. */ - quote_char = _rl_find_completion_word (&found_quote, &delimiter); - - orig_start = rl_point; - rl_point = orig_end; - - orig_text = rl_copy_text (orig_start, orig_end); - matches = gen_completion_matches (orig_text, orig_start, orig_end, - our_func, found_quote, quote_char); - - nontrivial_lcd = matches && strcmp (orig_text, matches[0]) != 0; - - /* If we are matching filenames, the attempted completion function will - have set rl_filename_completion_desired to a non-zero value. The basic - rl_filename_completion_function does this. */ - matching_filenames = rl_filename_completion_desired; - - if (matches == 0 || postprocess_matches (&matches, matching_filenames) == 0) - { - rl_ding (); - FREE (matches); - matches = (char **)0; - FREE (orig_text); - orig_text = (char *)0; - completion_changed_buffer = 0; - RL_UNSETSTATE(RL_STATE_COMPLETING); - return (0); - } - - RL_UNSETSTATE(RL_STATE_COMPLETING); - - for (match_list_size = 0; matches[match_list_size]; match_list_size++) - ; - - if (match_list_size == 0) - { - rl_ding (); - FREE (matches); - matches = (char **)0; - match_list_index = 0; - completion_changed_buffer = 0; - return (0); - } - - /* matches[0] is lcd if match_list_size > 1, but the circular buffer - code below should take care of it. */ - if (*matches[0]) - { - insert_match (matches[0], orig_start, matches[1] ? MULT_MATCH : SINGLE_MATCH, "e_char); - orig_end = orig_start + strlen (matches[0]); - completion_changed_buffer = STREQ (orig_text, matches[0]) == 0; - } - - if (match_list_size > 1 && _rl_complete_show_all) - { - display_matches (matches); - /* If there are so many matches that the user has to be asked - whether or not he wants to see the matches, menu completion - is unwieldy. */ - if (rl_completion_query_items > 0 && match_list_size >= rl_completion_query_items) - { - rl_ding (); - FREE (matches); - matches = (char **)0; - full_completion = 1; - return (0); - } - } - else if (match_list_size <= 1) - { - append_to_match (matches[0], delimiter, quote_char, nontrivial_lcd); - full_completion = 1; - return (0); - } - else if (_rl_menu_complete_prefix_first && match_list_size > 1) - { - rl_ding (); - return (0); - } - } - - /* Now we have the list of matches. Replace the text between - rl_line_buffer[orig_start] and rl_line_buffer[rl_point] with - matches[match_list_index], and add any necessary closing char. */ - - if (matches == 0 || match_list_size == 0) - { - rl_ding (); - FREE (matches); - matches = (char **)0; - completion_changed_buffer = 0; - return (0); - } - - match_list_index += count; - if (match_list_index < 0) - { - while (match_list_index < 0) - match_list_index += match_list_size; - } - else - match_list_index %= match_list_size; - - if (match_list_index == 0 && match_list_size > 1) - { - rl_ding (); - insert_match (matches[0], orig_start, MULT_MATCH, "e_char); - } - else - { - insert_match (matches[match_list_index], orig_start, SINGLE_MATCH, "e_char); - append_to_match (matches[match_list_index], delimiter, quote_char, - strcmp (orig_text, matches[match_list_index])); - } - - completion_changed_buffer = 1; - return (0); -} - -int -rl_backward_menu_complete (count, key) - int count, key; -{ - /* Positive arguments to backward-menu-complete translate into negative - arguments for menu-complete, and vice versa. */ - return (rl_menu_complete (-count, key)); -} diff --git a/lib/readline/doc/Makefile.old b/lib/readline/doc/Makefile.old deleted file mode 100644 index 58d4dd762..000000000 --- a/lib/readline/doc/Makefile.old +++ /dev/null @@ -1,76 +0,0 @@ -# This makefile for Readline library documentation is in -*- text -*- mode. -# Emacs likes it that way. -RM = rm -f - -MAKEINFO = makeinfo -TEXI2DVI = texi2dvi -TEXI2HTML = texi2html -QUIETPS = #set this to -q to shut up dvips -DVIPS = dvips -D 300 $(QUIETPS) -o $@ # tricky - -INSTALL_DATA = cp -infodir = /usr/local/info - -RLSRC = rlman.texinfo rluser.texinfo rltech.texinfo -HISTSRC = hist.texinfo hsuser.texinfo hstech.texinfo - -DVIOBJ = readline.dvi history.dvi -INFOOBJ = readline.info history.info -PSOBJ = readline.ps history.ps -HTMLOBJ = readline.html history.html - -all: info dvi html ps -nodvi: info html - -readline.dvi: $(RLSRC) - $(TEXI2DVI) rlman.texinfo - mv rlman.dvi readline.dvi - -readline.info: $(RLSRC) - $(MAKEINFO) --no-split -o $@ rlman.texinfo - -history.dvi: ${HISTSRC} - $(TEXI2DVI) hist.texinfo - mv hist.dvi history.dvi - -history.info: ${HISTSRC} - $(MAKEINFO) --no-split -o $@ hist.texinfo - -readline.ps: readline.dvi - $(RM) $@ - $(DVIPS) readline.dvi - -history.ps: history.dvi - $(RM) $@ - $(DVIPS) history.dvi - -readline.html: ${RLSRC} - $(TEXI2HTML) rlman.texinfo - sed -e 's:rlman.html:readline.html:' -e 's:rlman_toc.html:readline_toc.html:' rlman.html > readline.html - sed -e 's:rlman.html:readline.html:' -e 's:rlman_toc.html:readline_toc.html:' rlman_toc.html > readline_toc.html - $(RM) rlman.html rlman_toc.html - -history.html: ${HISTSRC} - $(TEXI2HTML) hist.texinfo - sed -e 's:hist.html:history.html:' -e 's:hist_toc.html:history_toc.html:' hist.html > history.html - sed -e 's:hist.html:history.html:' -e 's:hist_toc.html:history_toc.html:' hist_toc.html > history_toc.html - $(RM) hist.html hist_toc.html - -info: $(INFOOBJ) -dvi: $(DVIOBJ) -ps: $(PSOBJ) -html: $(HTMLOBJ) - -clean: - $(RM) *.aux *.cp *.fn *.ky *.log *.pg *.toc *.tp *.vr *.cps *.pgs \ - *.fns *.kys *.tps *.vrs *.o core - -distclean: clean -mostlyclean: clean - -maintainer-clean: clean - $(RM) *.dvi *.info *.info-* *.ps *.html - -install: info - ${INSTALL_DATA} readline.info $(infodir)/readline.info - ${INSTALL_DATA} history.info $(infodir)/history.info diff --git a/lib/readline/doc/readline.3~ b/lib/readline/doc/readline.3~ deleted file mode 100644 index 3bdcdbc5c..000000000 --- a/lib/readline/doc/readline.3~ +++ /dev/null @@ -1,1405 +0,0 @@ -.\" -.\" MAN PAGE COMMENTS to -.\" -.\" Chet Ramey -.\" Information Network Services -.\" Case Western Reserve University -.\" chet@ins.CWRU.Edu -.\" -.\" Last Change: Sat Aug 28 18:56:32 EDT 2010 -.\" -.TH READLINE 3 "2010 August 28" "GNU Readline 6.2" -.\" -.\" File Name macro. This used to be `.PN', for Path Name, -.\" but Sun doesn't seem to like that very much. -.\" -.de FN -\fI\|\\$1\|\fP -.. -.SH NAME -readline \- get a line from a user with editing -.SH SYNOPSIS -.LP -.nf -.ft B -#include -#include -#include -.ft -.fi -.LP -.nf -\fIchar *\fP -.br -\fBreadline\fP (\fIconst char *prompt\fP); -.fi -.SH COPYRIGHT -.if n Readline is Copyright (C) 1989\-2011 Free Software Foundation, Inc. -.if t Readline is Copyright \(co 1989\-2011 Free Software Foundation, Inc. -.SH DESCRIPTION -.LP -.B readline -will read a line from the terminal -and return it, using -.B prompt -as a prompt. If -.B prompt -is \fBNULL\fP or the empty string, no prompt is issued. -The line returned is allocated with -.IR malloc (3); -the caller must free it when finished. The line returned -has the final newline removed, so only the text of the line -remains. -.LP -.B readline -offers editing capabilities while the user is entering the -line. -By default, the line editing commands -are similar to those of emacs. -A vi\-style line editing interface is also available. -.LP -This manual page describes only the most basic use of \fBreadline\fP. -Much more functionality is available; see -\fIThe GNU Readline Library\fP and \fIThe GNU History Library\fP -for additional information. -.SH RETURN VALUE -.LP -.B readline -returns the text of the line read. A blank line -returns the empty string. If -.B EOF -is encountered while reading a line, and the line is empty, -.B NULL -is returned. If an -.B EOF -is read with a non\-empty line, it is -treated as a newline. -.SH NOTATION -.LP -An Emacs-style notation is used to denote -keystrokes. Control keys are denoted by C\-\fIkey\fR, e.g., C\-n -means Control\-N. Similarly, -.I meta -keys are denoted by M\-\fIkey\fR, so M\-x means Meta\-X. (On keyboards -without a -.I meta -key, M\-\fIx\fP means ESC \fIx\fP, i.e., press the Escape key -then the -.I x -key. This makes ESC the \fImeta prefix\fP. -The combination M\-C\-\fIx\fP means ESC\-Control\-\fIx\fP, -or press the Escape key -then hold the Control key while pressing the -.I x -key.) -.PP -Readline commands may be given numeric -.IR arguments , -which normally act as a repeat count. Sometimes, however, it is the -sign of the argument that is significant. Passing a negative argument -to a command that acts in the forward direction (e.g., \fBkill\-line\fP) -causes that command to act in a backward direction. Commands whose -behavior with arguments deviates from this are noted. -.PP -When a command is described as \fIkilling\fP text, the text -deleted is saved for possible future retrieval -(\fIyanking\fP). The killed text is saved in a -\fIkill ring\fP. Consecutive kills cause the text to be -accumulated into one unit, which can be yanked all at once. -Commands which do not kill text separate the chunks of text -on the kill ring. -.SH INITIALIZATION FILE -.LP -Readline is customized by putting commands in an initialization -file (the \fIinputrc\fP file). -The name of this file is taken from the value of the -.B INPUTRC -environment variable. If that variable is unset, the default is -.IR ~/.inputrc . -If that file does not exist or cannot be read, the ultimate default is -.IR /etc/inputrc . -When a program which uses the readline library starts up, the -init file is read, and the key bindings and variables are set. -There are only a few basic constructs allowed in the -readline init file. Blank lines are ignored. -Lines beginning with a \fB#\fP are comments. -Lines beginning with a \fB$\fP indicate conditional constructs. -Other lines denote key bindings and variable settings. -Each program using this library may add its own commands -and bindings. -.PP -For example, placing -.RS -.PP -M\-Control\-u: universal\-argument -.RE -or -.RS -C\-Meta\-u: universal\-argument -.RE -.sp -into the -.I inputrc -would make M\-C\-u execute the readline command -.IR universal\-argument . -.PP -The following symbolic character names are recognized while -processing key bindings: -.IR DEL , -.IR ESC , -.IR ESCAPE , -.IR LFD , -.IR NEWLINE , -.IR RET , -.IR RETURN , -.IR RUBOUT , -.IR SPACE , -.IR SPC , -and -.IR TAB . -.PP -In addition to command names, readline allows keys to be bound -to a string that is inserted when the key is pressed (a \fImacro\fP). -.PP -.SS Key Bindings -.PP -The syntax for controlling key bindings in the -.I inputrc -file is simple. All that is required is the name of the -command or the text of a macro and a key sequence to which -it should be bound. The name may be specified in one of two ways: -as a symbolic key name, possibly with \fIMeta\-\fP or \fIControl\-\fP -prefixes, or as a key sequence. -The name and key sequence are separated by a colon. There can be no -whitespace between the name and the colon. -.PP -When using the form \fBkeyname\fP:\^\fIfunction-name\fP or \fImacro\fP, -.I keyname -is the name of a key spelled out in English. For example: -.sp -.RS -Control\-u: universal\-argument -.br -Meta\-Rubout: backward\-kill\-word -.br -Control\-o: "> output" -.RE -.LP -In the above example, -.I C\-u -is bound to the function -.BR universal\-argument , -.I M-DEL -is bound to the function -.BR backward\-kill\-word , -and -.I C\-o -is bound to run the macro -expressed on the right hand side (that is, to insert the text -.if t \f(CW> output\fP -.if n ``> output'' -into the line). -.PP -In the second form, \fB"keyseq"\fP:\^\fIfunction\-name\fP or \fImacro\fP, -.B keyseq -differs from -.B keyname -above in that strings denoting -an entire key sequence may be specified by placing the sequence -within double quotes. Some GNU Emacs style key escapes can be -used, as in the following example, but the symbolic character names -are not recognized. -.sp -.RS -"\eC\-u": universal\-argument -.br -"\eC\-x\eC\-r": re\-read\-init\-file -.br -"\ee[11~": "Function Key 1" -.RE -.PP -In this example, -.I C-u -is again bound to the function -.BR universal\-argument . -.I "C-x C-r" -is bound to the function -.BR re\-read\-init\-file , -and -.I "ESC [ 1 1 ~" -is bound to insert the text -.if t \f(CWFunction Key 1\fP. -.if n ``Function Key 1''. -.PP -The full set of GNU Emacs style escape sequences available when specifying -key sequences is -.RS -.PD 0 -.TP -.B \eC\- -control prefix -.TP -.B \eM\- -meta prefix -.TP -.B \ee -an escape character -.TP -.B \e\e -backslash -.TP -.B \e" -literal ", a double quote -.TP -.B \e' -literal ', a single quote -.RE -.PD -.PP -In addition to the GNU Emacs style escape sequences, a second -set of backslash escapes is available: -.RS -.PD 0 -.TP -.B \ea -alert (bell) -.TP -.B \eb -backspace -.TP -.B \ed -delete -.TP -.B \ef -form feed -.TP -.B \en -newline -.TP -.B \er -carriage return -.TP -.B \et -horizontal tab -.TP -.B \ev -vertical tab -.TP -.B \e\fInnn\fP -the eight-bit character whose value is the octal value \fInnn\fP -(one to three digits) -.TP -.B \ex\fIHH\fP -the eight-bit character whose value is the hexadecimal value \fIHH\fP -(one or two hex digits) -.RE -.PD -.PP -When entering the text of a macro, single or double quotes should -be used to indicate a macro definition. Unquoted text -is assumed to be a function name. -In the macro body, the backslash escapes described above are expanded. -Backslash will quote any other character in the macro text, -including " and '. -.PP -.B Bash -allows the current readline key bindings to be displayed or modified -with the -.B bind -builtin command. The editing mode may be switched during interactive -use by using the -.B \-o -option to the -.B set -builtin command. Other programs using this library provide -similar mechanisms. The -.I inputrc -file may be edited and re-read if a program does not provide -any other means to incorporate new bindings. -.SS Variables -.PP -Readline has variables that can be used to further customize its -behavior. A variable may be set in the -.I inputrc -file with a statement of the form -.RS -.PP -\fBset\fP \fIvariable\-name\fP \fIvalue\fP -.RE -.PP -Except where noted, readline variables can take the values -.B On -or -.B Off -(without regard to case). -Unrecognized variable names are ignored. -When a variable value is read, empty or null values, "on" (case-insensitive), -and "1" are equivalent to \fBOn\fP. All other values are equivalent to -\fBOff\fP. -The variables and their default values are: -.PP -.PD 0 -.TP -.B bell\-style (audible) -Controls what happens when readline wants to ring the terminal bell. -If set to \fBnone\fP, readline never rings the bell. If set to -\fBvisible\fP, readline uses a visible bell if one is available. -If set to \fBaudible\fP, readline attempts to ring the terminal's bell. -.TP -.B bind\-tty\-special\-chars (On) -If set to \fBOn\fP, readline attempts to bind the control characters -treated specially by the kernel's terminal driver to their readline -equivalents. -.TP -.B colored\-stats (Off) -If set to \fBOn\fP, readline displays possible completions using different -colors to indicate their file type. -The color definitions are taken from the value of the \fBLS_COLORS\fP -environment variable. -.TP -.B comment\-begin (``#'') -The string that is inserted in \fBvi\fP mode when the -.B insert\-comment -command is executed. -This command is bound to -.B M\-# -in emacs mode and to -.B # -in vi command mode. -.TP -.B completion\-display\-width (-1) -The number of screen columns used to display possible matches -when performing completion. -The value is ignored if it is less than 0 or greater than the terminal -screen width. -A value of 0 will cause matches to be displayed one per line. -The default value is -1. -.TP -.B completion\-ignore\-case (Off) -If set to \fBOn\fP, readline performs filename matching and completion -in a case\-insensitive fashion. -.TP -.B completion\-map\-case (Off) -If set to \fBOn\fP, and \fBcompletion\-ignore\-case\fP is enabled, readline -treats hyphens (\fI\-\fP) and underscores (\fI_\fP) as equivalent when -performing case\-insensitive filename matching and completion. -.TP -.B completion\-prefix\-display\-length (0) -The length in characters of the common prefix of a list of possible -completions that is displayed without modification. When set to a -value greater than zero, common prefixes longer than this value are -replaced with an ellipsis when displaying possible completions. -.TP -.B completion\-query\-items (100) -This determines when the user is queried about viewing -the number of possible completions -generated by the \fBpossible\-completions\fP command. -It may be set to any integer value greater than or equal to -zero. If the number of possible completions is greater than -or equal to the value of this variable, the user is asked whether -or not he wishes to view them; otherwise they are simply listed -on the terminal. A negative value causes readline to never ask. -.TP -.B convert\-meta (On) -If set to \fBOn\fP, readline will convert characters with the -eighth bit set to an ASCII key sequence -by stripping the eighth bit and prefixing it with an -escape character (in effect, using escape as the \fImeta prefix\fP). -.TP -.B disable\-completion (Off) -If set to \fBOn\fP, readline will inhibit word completion. Completion -characters will be inserted into the line as if they had been -mapped to \fBself-insert\fP. -.TP -.B editing\-mode (emacs) -Controls whether readline begins with a set of key bindings similar -to \fIEmacs\fP or \fIvi\fP. -.B editing\-mode -can be set to either -.B emacs -or -.BR vi . -.TP -.B echo\-control\-characters (On) -When set to \fBOn\fP, on operating systems that indicate they support it, -readline echoes a character corresponding to a signal generated from the -keyboard. -.TP -.B enable\-keypad (Off) -When set to \fBOn\fP, readline will try to enable the application -keypad when it is called. Some systems need this to enable the -arrow keys. -.TP -.B enable\-meta\-key (On) -When set to \fBOn\fP, readline will try to enable any meta modifier -key the terminal claims to support when it is called. On many terminals, -the meta key is used to send eight-bit characters. -.TP -.B expand\-tilde (Off) -If set to \fBOn\fP, tilde expansion is performed when readline -attempts word completion. -.TP -.B history\-preserve\-point (Off) -If set to \fBOn\fP, the history code attempts to place point at the -same location on each history line retrieved with \fBprevious-history\fP -or \fBnext-history\fP. -.TP -.B history\-size (0) -Set the maximum number of history entries saved in the history list. If -set to zero, the number of entries in the history list is not limited. -.TP -.B horizontal\-scroll\-mode (Off) -When set to \fBOn\fP, makes readline use a single line for display, -scrolling the input horizontally on a single screen line when it -becomes longer than the screen width rather than wrapping to a new line. -.TP -.B input\-meta (Off) -If set to \fBOn\fP, readline will enable eight-bit input (that is, -it will not clear the eighth bit in the characters it reads), -regardless of what the terminal claims it can support. The name -.B meta\-flag -is a synonym for this variable. -.TP -.B isearch\-terminators (``C\-[ C\-J'') -The string of characters that should terminate an incremental -search without subsequently executing the character as a command. -If this variable has not been given a value, the characters -\fIESC\fP and \fIC\-J\fP will terminate an incremental search. -.TP -.B keymap (emacs) -Set the current readline keymap. The set of legal keymap names is -\fIemacs, emacs-standard, emacs-meta, emacs-ctlx, vi, vi-move, -vi-command\fP, and -.IR vi-insert . -\fIvi\fP is equivalent to \fIvi-command\fP; \fIemacs\fP is -equivalent to \fIemacs-standard\fP. The default value is -.IR emacs . -The value of -.B editing\-mode -also affects the default keymap. -.TP -.B mark\-directories (On) -If set to \fBOn\fP, completed directory names have a slash -appended. -.TP -.B mark\-modified\-lines (Off) -If set to \fBOn\fP, history lines that have been modified are displayed -with a preceding asterisk (\fB*\fP). -.TP -.B mark\-symlinked\-directories (Off) -If set to \fBOn\fP, completed names which are symbolic links to directories -have a slash appended (subject to the value of -\fBmark\-directories\fP). -.TP -.B match\-hidden\-files (On) -This variable, when set to \fBOn\fP, causes readline to match files whose -names begin with a `.' (hidden files) when performing filename -completion. -If set to \fBOff\fP, the leading `.' must be -supplied by the user in the filename to be completed. -.TP -.B menu\-complete\-display\-prefix (Off) -If set to \fBOn\fP, menu completion displays the common prefix of the -list of possible completions (which may be empty) before cycling through -the list. -.TP -.B output\-meta (Off) -If set to \fBOn\fP, readline will display characters with the -eighth bit set directly rather than as a meta-prefixed escape -sequence. -.TP -.B page\-completions (On) -If set to \fBOn\fP, readline uses an internal \fImore\fP-like pager -to display a screenful of possible completions at a time. -.TP -.B print\-completions\-horizontally (Off) -If set to \fBOn\fP, readline will display completions with matches -sorted horizontally in alphabetical order, rather than down the screen. -.TP -.B revert\-all\-at\-newline (Off) -If set to \fBOn\fP, readline will undo all changes to history lines -before returning when \fBaccept\-line\fP is executed. By default, -history lines may be modified and retain individual undo lists across -calls to \fBreadline\fP. -.TP -.B show\-all\-if\-ambiguous (Off) -This alters the default behavior of the completion functions. If -set to -.BR On , -words which have more than one possible completion cause the -matches to be listed immediately instead of ringing the bell. -.TP -.B show\-all\-if\-unmodified (Off) -This alters the default behavior of the completion functions in -a fashion similar to \fBshow\-all\-if\-ambiguous\fP. -If set to -.BR On , -words which have more than one possible completion without any -possible partial completion (the possible completions don't share -a common prefix) cause the matches to be listed immediately instead -of ringing the bell. -.TP -.B skip\-completed\-text (Off) -If set to \fBOn\fP, this alters the default completion behavior when -inserting a single match into the line. It's only active when -performing completion in the middle of a word. If enabled, readline -does not insert characters from the completion that match characters -after point in the word being completed, so portions of the word -following the cursor are not duplicated. -.TP -.B visible\-stats (Off) -If set to \fBOn\fP, a character denoting a file's type as reported -by \fIstat\fP(2) is appended to the filename when listing possible -completions. -.PD -.SS Conditional Constructs -.PP -Readline implements a facility similar in spirit to the conditional -compilation features of the C preprocessor which allows key -bindings and variable settings to be performed as the result -of tests. There are four parser directives used. -.IP \fB$if\fP -The -.B $if -construct allows bindings to be made based on the -editing mode, the terminal being used, or the application using -readline. The text of the test extends to the end of the line; -no characters are required to isolate it. -.RS -.IP \fBmode\fP -The \fBmode=\fP form of the \fB$if\fP directive is used to test -whether readline is in emacs or vi mode. -This may be used in conjunction -with the \fBset keymap\fP command, for instance, to set bindings in -the \fIemacs-standard\fP and \fIemacs-ctlx\fP keymaps only if -readline is starting out in emacs mode. -.IP \fBterm\fP -The \fBterm=\fP form may be used to include terminal-specific -key bindings, perhaps to bind the key sequences output by the -terminal's function keys. The word on the right side of the -.B = -is tested against the full name of the terminal and the portion -of the terminal name before the first \fB\-\fP. This allows -.I sun -to match both -.I sun -and -.IR sun\-cmd , -for instance. -.IP \fBapplication\fP -The \fBapplication\fP construct is used to include -application-specific settings. Each program using the readline -library sets the \fIapplication name\fP, and an initialization -file can test for a particular value. -This could be used to bind key sequences to functions useful for -a specific program. For instance, the following command adds a -key sequence that quotes the current or previous word in \fBbash\fP: -.sp 1 -.RS -.nf -\fB$if\fP Bash -# Quote the current or previous word -"\eC-xq": "\eeb\e"\eef\e"" -\fB$endif\fP -.fi -.RE -.RE -.IP \fB$endif\fP -This command, as seen in the previous example, terminates an -\fB$if\fP command. -.IP \fB$else\fP -Commands in this branch of the \fB$if\fP directive are executed if -the test fails. -.IP \fB$include\fP -This directive takes a single filename as an argument and reads commands -and bindings from that file. For example, the following directive -would read \fI/etc/inputrc\fP: -.sp 1 -.RS -.nf -\fB$include\fP \^ \fI/etc/inputrc\fP -.fi -.RE -.SH SEARCHING -.PP -Readline provides commands for searching through the command history -for lines containing a specified string. -There are two search modes: -.I incremental -and -.IR non-incremental . -.PP -Incremental searches begin before the user has finished typing the -search string. -As each character of the search string is typed, readline displays -the next entry from the history matching the string typed so far. -An incremental search requires only as many characters as needed to -find the desired history entry. -To search backward in the history for a particular string, type -\fBC\-r\fP. Typing \fBC\-s\fP searches forward through the history. -The characters present in the value of the \fBisearch-terminators\fP -variable are used to terminate an incremental search. -If that variable has not been assigned a value the \fIEscape\fP and -\fBC\-J\fP characters will terminate an incremental search. -\fBC\-G\fP will abort an incremental search and restore the original -line. -When the search is terminated, the history entry containing the -search string becomes the current line. -.PP -To find other matching entries in the history list, type \fBC\-s\fP or -\fBC\-r\fP as appropriate. -This will search backward or forward in the history for the next -line matching the search string typed so far. -Any other key sequence bound to a readline command will terminate -the search and execute that command. -For instance, a newline will terminate the search and accept -the line, thereby executing the command from the history list. -A movement command will terminate the search, make the last line found -the current line, and begin editing. -.PP -Non-incremental searches read the entire search string before starting -to search for matching history lines. The search string may be -typed by the user or be part of the contents of the current line. -.SH EDITING COMMANDS -.PP -The following is a list of the names of the commands and the default -key sequences to which they are bound. -Command names without an accompanying key sequence are unbound by default. -.PP -In the following descriptions, \fIpoint\fP refers to the current cursor -position, and \fImark\fP refers to a cursor position saved by the -\fBset\-mark\fP command. -The text between the point and mark is referred to as the \fIregion\fP. -.SS Commands for Moving -.PP -.PD 0 -.TP -.B beginning\-of\-line (C\-a) -Move to the start of the current line. -.TP -.B end\-of\-line (C\-e) -Move to the end of the line. -.TP -.B forward\-char (C\-f) -Move forward a character. -.TP -.B backward\-char (C\-b) -Move back a character. -.TP -.B forward\-word (M\-f) -Move forward to the end of the next word. Words are composed of -alphanumeric characters (letters and digits). -.TP -.B backward\-word (M\-b) -Move back to the start of the current or previous word. Words are -composed of alphanumeric characters (letters and digits). -.TP -.B clear\-screen (C\-l) -Clear the screen leaving the current line at the top of the screen. -With an argument, refresh the current line without clearing the -screen. -.TP -.B redraw\-current\-line -Refresh the current line. -.PD -.SS Commands for Manipulating the History -.PP -.PD 0 -.TP -.B accept\-line (Newline, Return) -Accept the line regardless of where the cursor is. -If this line is -non-empty, it may be added to the history list for future recall with -\fBadd_history()\fP. -If the line is a modified history line, the history line is restored to its original state. -.TP -.B previous\-history (C\-p) -Fetch the previous command from the history list, moving back in -the list. -.TP -.B next\-history (C\-n) -Fetch the next command from the history list, moving forward in the -list. -.TP -.B beginning\-of\-history (M\-<) -Move to the first line in the history. -.TP -.B end\-of\-history (M\->) -Move to the end of the input history, i.e., the line currently being -entered. -.TP -.B reverse\-search\-history (C\-r) -Search backward starting at the current line and moving `up' through -the history as necessary. This is an incremental search. -.TP -.B forward\-search\-history (C\-s) -Search forward starting at the current line and moving `down' through -the history as necessary. This is an incremental search. -.TP -.B non\-incremental\-reverse\-search\-history (M\-p) -Search backward through the history starting at the current line -using a non-incremental search for a string supplied by the user. -.TP -.B non\-incremental\-forward\-search\-history (M\-n) -Search forward through the history using a non-incremental search -for a string supplied by the user. -.TP -.B history\-search\-backward -Search backward through the history for the string of characters -between the start of the current line and the current cursor -position (the \fIpoint\fP). -The search string must match at the beginning of a history line. -This is a non-incremental search. -.TP -.B history\-search\-forward -Search forward through the history for the string of characters -between the start of the current line and the point. -The search string must match at the beginning of a history line. -This is a non-incremental search. -.TP -.B history\-substring\-search\-backward -Search backward through the history for the string of characters -between the start of the current line and the current cursor -position (the \fIpoint\fP). -The search string may match anywhere in a history line. -This is a non-incremental search. -.TP -.B history\-substring\-search\-forward -Search forward through the history for the string of characters -between the start of the current line and the point. -The search string may match anywhere in a history line. -This is a non-incremental search. -.TP -.B yank\-nth\-arg (M\-C\-y) -Insert the first argument to the previous command (usually -the second word on the previous line) at point. -With an argument -.IR n , -insert the \fIn\fPth word from the previous command (the words -in the previous command begin with word 0). A negative argument -inserts the \fIn\fPth word from the end of the previous command. -Once the argument \fIn\fP is computed, the argument is extracted -as if the "!\fIn\fP" history expansion had been specified. -.TP -.B -yank\-last\-arg (M\-.\^, M\-_\^) -Insert the last argument to the previous command (the last word of -the previous history entry). -With a numeric argument, behave exactly like \fByank\-nth\-arg\fP. -Successive calls to \fByank\-last\-arg\fP move back through the history -list, inserting the last word (or the word specified by the argument to -the first call) of each line in turn. -Any numeric argument supplied to these successive calls determines -the direction to move through the history. A negative argument switches -the direction through the history (back or forward). -The history expansion facilities are used to extract the last argument, -as if the "!$" history expansion had been specified. -.PD -.SS Commands for Changing Text -.PP -.PD 0 -.TP -.B delete\-char (C\-d) -Delete the character at point. If point is at the -beginning of the line, there are no characters in the line, and -the last character typed was not bound to \fBdelete\-char\fP, then return -.SM -.BR EOF . -.TP -.B backward\-delete\-char (Rubout) -Delete the character behind the cursor. When given a numeric argument, -save the deleted text on the kill ring. -.TP -.B forward\-backward\-delete\-char -Delete the character under the cursor, unless the cursor is at the -end of the line, in which case the character behind the cursor is -deleted. -.TP -.B quoted\-insert (C\-q, C\-v) -Add the next character that you type to the line verbatim. This is -how to insert characters like \fBC\-q\fP, for example. -.TP -.B tab\-insert (M-TAB) -Insert a tab character. -.TP -.B self\-insert (a,\ b,\ A,\ 1,\ !,\ ...) -Insert the character typed. -.TP -.B transpose\-chars (C\-t) -Drag the character before point forward over the character at point, -moving point forward as well. -If point is at the end of the line, then this transposes -the two characters before point. -Negative arguments have no effect. -.TP -.B transpose\-words (M\-t) -Drag the word before point past the word after point, -moving point over that word as well. -If point is at the end of the line, this transposes -the last two words on the line. -.TP -.B upcase\-word (M\-u) -Uppercase the current (or following) word. With a negative argument, -uppercase the previous word, but do not move point. -.TP -.B downcase\-word (M\-l) -Lowercase the current (or following) word. With a negative argument, -lowercase the previous word, but do not move point. -.TP -.B capitalize\-word (M\-c) -Capitalize the current (or following) word. With a negative argument, -capitalize the previous word, but do not move point. -.TP -.B overwrite\-mode -Toggle overwrite mode. With an explicit positive numeric argument, -switches to overwrite mode. With an explicit non-positive numeric -argument, switches to insert mode. This command affects only -\fBemacs\fP mode; \fBvi\fP mode does overwrite differently. -Each call to \fIreadline()\fP starts in insert mode. -In overwrite mode, characters bound to \fBself\-insert\fP replace -the text at point rather than pushing the text to the right. -Characters bound to \fBbackward\-delete\-char\fP replace the character -before point with a space. By default, this command is unbound. -.PD -.SS Killing and Yanking -.PP -.PD 0 -.TP -.B kill\-line (C\-k) -Kill the text from point to the end of the line. -.TP -.B backward\-kill\-line (C\-x Rubout) -Kill backward to the beginning of the line. -.TP -.B unix\-line\-discard (C\-u) -Kill backward from point to the beginning of the line. -The killed text is saved on the kill-ring. -.\" There is no real difference between this and backward-kill-line -.TP -.B kill\-whole\-line -Kill all characters on the current line, no matter where point is. -.TP -.B kill\-word (M\-d) -Kill from point the end of the current word, or if between -words, to the end of the next word. Word boundaries are the same as -those used by \fBforward\-word\fP. -.TP -.B backward\-kill\-word (M\-Rubout) -Kill the word behind point. -Word boundaries are the same as those used by \fBbackward\-word\fP. -.TP -.B unix\-word\-rubout (C\-w) -Kill the word behind point, using white space as a word boundary. -The killed text is saved on the kill-ring. -.TP -.B unix\-filename\-rubout -Kill the word behind point, using white space and the slash character -as the word boundaries. -The killed text is saved on the kill-ring. -.TP -.B delete\-horizontal\-space (M\-\e) -Delete all spaces and tabs around point. -.TP -.B kill\-region -Kill the text between the point and \fImark\fP (saved cursor position). -This text is referred to as the \fIregion\fP. -.TP -.B copy\-region\-as\-kill -Copy the text in the region to the kill buffer. -.TP -.B copy\-backward\-word -Copy the word before point to the kill buffer. -The word boundaries are the same as \fBbackward\-word\fP. -.TP -.B copy\-forward\-word -Copy the word following point to the kill buffer. -The word boundaries are the same as \fBforward\-word\fP. -.TP -.B yank (C\-y) -Yank the top of the kill ring into the buffer at point. -.TP -.B yank\-pop (M\-y) -Rotate the kill ring, and yank the new top. Only works following -.B yank -or -.BR yank\-pop . -.PD -.SS Numeric Arguments -.PP -.PD 0 -.TP -.B digit\-argument (M\-0, M\-1, ..., M\-\-) -Add this digit to the argument already accumulating, or start a new -argument. M\-\- starts a negative argument. -.TP -.B universal\-argument -This is another way to specify an argument. -If this command is followed by one or more digits, optionally with a -leading minus sign, those digits define the argument. -If the command is followed by digits, executing -.B universal\-argument -again ends the numeric argument, but is otherwise ignored. -As a special case, if this command is immediately followed by a -character that is neither a digit or minus sign, the argument count -for the next command is multiplied by four. -The argument count is initially one, so executing this function the -first time makes the argument count four, a second time makes the -argument count sixteen, and so on. -.PD -.SS Completing -.PP -.PD 0 -.TP -.B complete (TAB) -Attempt to perform completion on the text before point. -The actual completion performed is application-specific. -.BR Bash , -for instance, attempts completion treating the text as a variable -(if the text begins with \fB$\fP), username (if the text begins with -\fB~\fP), hostname (if the text begins with \fB@\fP), or -command (including aliases and functions) in turn. If none -of these produces a match, filename completion is attempted. -.BR Gdb , -on the other hand, -allows completion of program functions and variables, and -only attempts filename completion under certain circumstances. -.TP -.B possible\-completions (M\-?) -List the possible completions of the text before point. -When displaying completions, readline sets the number of columns used -for display to the value of \fBcompletion-display-width\fP, the value of -the environment variable -.SM -.BR COLUMNS , -or the screen width, in that order. -.TP -.B insert\-completions (M\-*) -Insert all completions of the text before point -that would have been generated by -\fBpossible\-completions\fP. -.TP -.B menu\-complete -Similar to \fBcomplete\fP, but replaces the word to be completed -with a single match from the list of possible completions. -Repeated execution of \fBmenu\-complete\fP steps through the list -of possible completions, inserting each match in turn. -At the end of the list of completions, the bell is rung -(subject to the setting of \fBbell\-style\fP) -and the original text is restored. -An argument of \fIn\fP moves \fIn\fP positions forward in the list -of matches; a negative argument may be used to move backward -through the list. -This command is intended to be bound to \fBTAB\fP, but is unbound -by default. -.TP -.B menu\-complete\-backward -Identical to \fBmenu\-complete\fP, but moves backward through the list -of possible completions, as if \fBmenu\-complete\fP had been given a -negative argument. This command is unbound by default. -.TP -.B delete\-char\-or\-list -Deletes the character under the cursor if not at the beginning or -end of the line (like \fBdelete-char\fP). -If at the end of the line, behaves identically to -\fBpossible-completions\fP. -.PD -.SS Keyboard Macros -.PP -.PD 0 -.TP -.B start\-kbd\-macro (C\-x (\^) -Begin saving the characters typed into the current keyboard macro. -.TP -.B end\-kbd\-macro (C\-x )\^) -Stop saving the characters typed into the current keyboard macro -and store the definition. -.TP -.B call\-last\-kbd\-macro (C\-x e) -Re-execute the last keyboard macro defined, by making the characters -in the macro appear as if typed at the keyboard. -.B print\-last\-kbd\-macro () -Print the last keyboard macro defined in a format suitable for the -\fIinputrc\fP file. -.PD -.SS Miscellaneous -.PP -.PD 0 -.TP -.B re\-read\-init\-file (C\-x C\-r) -Read in the contents of the \fIinputrc\fP file, and incorporate -any bindings or variable assignments found there. -.TP -.B abort (C\-g) -Abort the current editing command and -ring the terminal's bell (subject to the setting of -.BR bell\-style ). -.TP -.B do\-uppercase\-version (M\-a, M\-b, M\-\fIx\fP, ...) -If the metafied character \fIx\fP is lowercase, run the command -that is bound to the corresponding uppercase character. -.TP -.B prefix\-meta (ESC) -Metafy the next character typed. -.SM -.B ESC -.B f -is equivalent to -.BR Meta\-f . -.TP -.B undo (C\-_, C\-x C\-u) -Incremental undo, separately remembered for each line. -.TP -.B revert\-line (M\-r) -Undo all changes made to this line. This is like executing the -.B undo -command enough times to return the line to its initial state. -.TP -.B tilde\-expand (M\-&) -Perform tilde expansion on the current word. -.TP -.B set\-mark (C\-@, M\-) -Set the mark to the point. If a -numeric argument is supplied, the mark is set to that position. -.TP -.B exchange\-point\-and\-mark (C\-x C\-x) -Swap the point with the mark. The current cursor position is set to -the saved position, and the old cursor position is saved as the mark. -.TP -.B character\-search (C\-]) -A character is read and point is moved to the next occurrence of that -character. A negative count searches for previous occurrences. -.TP -.B character\-search\-backward (M\-C\-]) -A character is read and point is moved to the previous occurrence of that -character. A negative count searches for subsequent occurrences. -.TP -.B skip\-csi\-sequence -Read enough characters to consume a multi-key sequence such as those -defined for keys like Home and End. Such sequences begin with a -Control Sequence Indicator (CSI), usually ESC\-[. If this sequence is -bound to "\e[", keys producing such sequences will have no effect -unless explicitly bound to a readline command, instead of inserting -stray characters into the editing buffer. This is unbound by default, -but usually bound to ESC\-[. -.TP -.B insert\-comment (M\-#) -Without a numeric argument, the value of the readline -.B comment\-begin -variable is inserted at the beginning of the current line. -If a numeric argument is supplied, this command acts as a toggle: if -the characters at the beginning of the line do not match the value -of \fBcomment\-begin\fP, the value is inserted, otherwise -the characters in \fBcomment-begin\fP are deleted from the beginning of -the line. -In either case, the line is accepted as if a newline had been typed. -The default value of -.B comment\-begin -makes the current line a shell comment. -If a numeric argument causes the comment character to be removed, the line -will be executed by the shell. -.TP -.B dump\-functions -Print all of the functions and their key bindings to the -readline output stream. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an \fIinputrc\fP file. -.TP -.B dump\-variables -Print all of the settable variables and their values to the -readline output stream. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an \fIinputrc\fP file. -.TP -.B dump\-macros -Print all of the readline key sequences bound to macros and the -strings they output. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an \fIinputrc\fP file. -.TP -.B emacs\-editing\-mode (C\-e) -When in -.B vi -command mode, this causes a switch to -.B emacs -editing mode. -.TP -.B vi\-editing\-mode (M\-C\-j) -When in -.B emacs -editing mode, this causes a switch to -.B vi -editing mode. -.PD -.SH DEFAULT KEY BINDINGS -.LP -The following is a list of the default emacs and vi bindings. -Characters with the eighth bit set are written as M\-, and -are referred to as -.I metafied -characters. -The printable ASCII characters not mentioned in the list of emacs -standard bindings are bound to the -.B self\-insert -function, which just inserts the given character into the input line. -In vi insertion mode, all characters not specifically mentioned are -bound to -.BR self\-insert . -Characters assigned to signal generation by -.IR stty (1) -or the terminal driver, such as C-Z or C-C, -retain that function. -Upper and lower case metafied characters are bound to the same function in -the emacs mode meta keymap. -The remaining characters are unbound, which causes readline -to ring the bell (subject to the setting of the -.B bell\-style -variable). -.SS Emacs Mode -.RS +.6i -.nf -.ta 2.5i -.sp -Emacs Standard bindings -.sp -"C-@" set-mark -"C-A" beginning-of-line -"C-B" backward-char -"C-D" delete-char -"C-E" end-of-line -"C-F" forward-char -"C-G" abort -"C-H" backward-delete-char -"C-I" complete -"C-J" accept-line -"C-K" kill-line -"C-L" clear-screen -"C-M" accept-line -"C-N" next-history -"C-P" previous-history -"C-Q" quoted-insert -"C-R" reverse-search-history -"C-S" forward-search-history -"C-T" transpose-chars -"C-U" unix-line-discard -"C-V" quoted-insert -"C-W" unix-word-rubout -"C-Y" yank -"C-]" character-search -"C-_" undo -"\^ " to "/" self-insert -"0" to "9" self-insert -":" to "~" self-insert -"C-?" backward-delete-char -.PP -Emacs Meta bindings -.sp -"M-C-G" abort -"M-C-H" backward-kill-word -"M-C-I" tab-insert -"M-C-J" vi-editing-mode -"M-C-M" vi-editing-mode -"M-C-R" revert-line -"M-C-Y" yank-nth-arg -"M-C-[" complete -"M-C-]" character-search-backward -"M-space" set-mark -"M-#" insert-comment -"M-&" tilde-expand -"M-*" insert-completions -"M--" digit-argument -"M-." yank-last-arg -"M-0" digit-argument -"M-1" digit-argument -"M-2" digit-argument -"M-3" digit-argument -"M-4" digit-argument -"M-5" digit-argument -"M-6" digit-argument -"M-7" digit-argument -"M-8" digit-argument -"M-9" digit-argument -"M-<" beginning-of-history -"M-=" possible-completions -"M->" end-of-history -"M-?" possible-completions -"M-B" backward-word -"M-C" capitalize-word -"M-D" kill-word -"M-F" forward-word -"M-L" downcase-word -"M-N" non-incremental-forward-search-history -"M-P" non-incremental-reverse-search-history -"M-R" revert-line -"M-T" transpose-words -"M-U" upcase-word -"M-Y" yank-pop -"M-\e" delete-horizontal-space -"M-~" tilde-expand -"M-C-?" backward-kill-word -"M-_" yank-last-arg -.PP -Emacs Control-X bindings -.sp -"C-XC-G" abort -"C-XC-R" re-read-init-file -"C-XC-U" undo -"C-XC-X" exchange-point-and-mark -"C-X(" start-kbd-macro -"C-X)" end-kbd-macro -"C-XE" call-last-kbd-macro -"C-XC-?" backward-kill-line -.sp -.RE -.SS VI Mode bindings -.RS +.6i -.nf -.ta 2.5i -.sp -.PP -VI Insert Mode functions -.sp -"C-D" vi-eof-maybe -"C-H" backward-delete-char -"C-I" complete -"C-J" accept-line -"C-M" accept-line -"C-R" reverse-search-history -"C-S" forward-search-history -"C-T" transpose-chars -"C-U" unix-line-discard -"C-V" quoted-insert -"C-W" unix-word-rubout -"C-Y" yank -"C-[" vi-movement-mode -"C-_" undo -"\^ " to "~" self-insert -"C-?" backward-delete-char -.PP -VI Command Mode functions -.sp -"C-D" vi-eof-maybe -"C-E" emacs-editing-mode -"C-G" abort -"C-H" backward-char -"C-J" accept-line -"C-K" kill-line -"C-L" clear-screen -"C-M" accept-line -"C-N" next-history -"C-P" previous-history -"C-Q" quoted-insert -"C-R" reverse-search-history -"C-S" forward-search-history -"C-T" transpose-chars -"C-U" unix-line-discard -"C-V" quoted-insert -"C-W" unix-word-rubout -"C-Y" yank -"C-_" vi-undo -"\^ " forward-char -"#" insert-comment -"$" end-of-line -"%" vi-match -"&" vi-tilde-expand -"*" vi-complete -"+" next-history -"," vi-char-search -"-" previous-history -"." vi-redo -"/" vi-search -"0" beginning-of-line -"1" to "9" vi-arg-digit -";" vi-char-search -"=" vi-complete -"?" vi-search -"A" vi-append-eol -"B" vi-prev-word -"C" vi-change-to -"D" vi-delete-to -"E" vi-end-word -"F" vi-char-search -"G" vi-fetch-history -"I" vi-insert-beg -"N" vi-search-again -"P" vi-put -"R" vi-replace -"S" vi-subst -"T" vi-char-search -"U" revert-line -"W" vi-next-word -"X" backward-delete-char -"Y" vi-yank-to -"\e" vi-complete -"^" vi-first-print -"_" vi-yank-arg -"`" vi-goto-mark -"a" vi-append-mode -"b" vi-prev-word -"c" vi-change-to -"d" vi-delete-to -"e" vi-end-word -"f" vi-char-search -"h" backward-char -"i" vi-insertion-mode -"j" next-history -"k" prev-history -"l" forward-char -"m" vi-set-mark -"n" vi-search-again -"p" vi-put -"r" vi-change-char -"s" vi-subst -"t" vi-char-search -"u" vi-undo -"w" vi-next-word -"x" vi-delete -"y" vi-yank-to -"|" vi-column -"~" vi-change-case -.RE -.SH "SEE ALSO" -.PD 0 -.TP -\fIThe Gnu Readline Library\fP, Brian Fox and Chet Ramey -.TP -\fIThe Gnu History Library\fP, Brian Fox and Chet Ramey -.TP -\fIbash\fP(1) -.PD -.SH FILES -.PD 0 -.TP -.FN ~/.inputrc -Individual \fBreadline\fP initialization file -.PD -.SH AUTHORS -Brian Fox, Free Software Foundation -.br -bfox@gnu.org -.PP -Chet Ramey, Case Western Reserve University -.br -chet@ins.CWRU.Edu -.SH BUG REPORTS -If you find a bug in -.B readline, -you should report it. But first, you should -make sure that it really is a bug, and that it appears in the latest -version of the -.B readline -library that you have. -.PP -Once you have determined that a bug actually exists, mail a -bug report to \fIbug\-readline\fP@\fIgnu.org\fP. -If you have a fix, you are welcome to mail that -as well! Suggestions and `philosophical' bug reports may be mailed -to \fPbug-readline\fP@\fIgnu.org\fP or posted to the Usenet -newsgroup -.BR gnu.bash.bug . -.PP -Comments and bug reports concerning -this manual page should be directed to -.IR chet@ins.CWRU.Edu . -.SH BUGS -.PP -It's too big and too slow. diff --git a/lib/readline/doc/rltech.texi~ b/lib/readline/doc/rltech.texi~ deleted file mode 100644 index 92c67caeb..000000000 --- a/lib/readline/doc/rltech.texi~ +++ /dev/null @@ -1,2450 +0,0 @@ -@comment %**start of header (This is for running Texinfo on a region.) -@setfilename rltech.info -@comment %**end of header (This is for running Texinfo on a region.) - -@ifinfo -This document describes the GNU Readline Library, a utility for aiding -in the consistency of user interface across discrete programs that need -to provide a command line interface. - -Copyright (C) 1988--2011 Free Software Foundation, Inc. - -Permission is granted to make and distribute verbatim copies of -this manual provided the copyright notice and this permission notice -pare preserved on all copies. - -@ignore -Permission is granted to process this file through TeX and print the -results, provided the printed document carries copying permission -notice identical to this one except for the removal of this paragraph -(this paragraph not being relevant to the printed manual). -@end ignore - -Permission is granted to copy and distribute modified versions of this -manual under the conditions for verbatim copying, provided that the entire -resulting derived work is distributed under the terms of a permission -notice identical to this one. - -Permission is granted to copy and distribute translations of this manual -into another language, under the above conditions for modified versions, -except that this permission notice may be stated in a translation approved -by the Foundation. -@end ifinfo - -@node Programming with GNU Readline -@chapter Programming with GNU Readline - -This chapter describes the interface between the @sc{gnu} Readline Library and -other programs. If you are a programmer, and you wish to include the -features found in @sc{gnu} Readline -such as completion, line editing, and interactive history manipulation -in your own programs, this section is for you. - -@menu -* Basic Behavior:: Using the default behavior of Readline. -* Custom Functions:: Adding your own functions to Readline. -* Readline Variables:: Variables accessible to custom - functions. -* Readline Convenience Functions:: Functions which Readline supplies to - aid in writing your own custom - functions. -* Readline Signal Handling:: How Readline behaves when it receives signals. -* Custom Completers:: Supplanting or supplementing Readline's - completion functions. -@end menu - -@node Basic Behavior -@section Basic Behavior - -Many programs provide a command line interface, such as @code{mail}, -@code{ftp}, and @code{sh}. For such programs, the default behaviour of -Readline is sufficient. This section describes how to use Readline in -the simplest way possible, perhaps to replace calls in your code to -@code{gets()} or @code{fgets()}. - -@findex readline -@cindex readline, function - -The function @code{readline()} prints a prompt @var{prompt} -and then reads and returns a single line of text from the user. -If @var{prompt} is @code{NULL} or the empty string, no prompt is displayed. -The line @code{readline} returns is allocated with @code{malloc()}; -the caller should @code{free()} the line when it has finished with it. -The declaration for @code{readline} in ANSI C is - -@example -@code{char *readline (const char *@var{prompt});} -@end example - -@noindent -So, one might say -@example -@code{char *line = readline ("Enter a line: ");} -@end example -@noindent -in order to read a line of text from the user. -The line returned has the final newline removed, so only the -text remains. - -If @code{readline} encounters an @code{EOF} while reading the line, and the -line is empty at that point, then @code{(char *)NULL} is returned. -Otherwise, the line is ended just as if a newline had been typed. - -If you want the user to be able to get at the line later, (with -@key{C-p} for example), you must call @code{add_history()} to save the -line away in a @dfn{history} list of such lines. - -@example -@code{add_history (line)}; -@end example - -@noindent -For full details on the GNU History Library, see the associated manual. - -It is preferable to avoid saving empty lines on the history list, since -users rarely have a burning need to reuse a blank line. Here is -a function which usefully replaces the standard @code{gets()} library -function, and has the advantage of no static buffer to overflow: - -@example -/* A static variable for holding the line. */ -static char *line_read = (char *)NULL; - -/* Read a string, and return a pointer to it. - Returns NULL on EOF. */ -char * -rl_gets () -@{ - /* If the buffer has already been allocated, - return the memory to the free pool. */ - if (line_read) - @{ - free (line_read); - line_read = (char *)NULL; - @} - - /* Get a line from the user. */ - line_read = readline (""); - - /* If the line has any text in it, - save it on the history. */ - if (line_read && *line_read) - add_history (line_read); - - return (line_read); -@} -@end example - -This function gives the user the default behaviour of @key{TAB} -completion: completion on file names. If you do not want Readline to -complete on filenames, you can change the binding of the @key{TAB} key -with @code{rl_bind_key()}. - -@example -@code{int rl_bind_key (int @var{key}, rl_command_func_t *@var{function});} -@end example - -@code{rl_bind_key()} takes two arguments: @var{key} is the character that -you want to bind, and @var{function} is the address of the function to -call when @var{key} is pressed. Binding @key{TAB} to @code{rl_insert()} -makes @key{TAB} insert itself. -@code{rl_bind_key()} returns non-zero if @var{key} is not a valid -ASCII character code (between 0 and 255). - -Thus, to disable the default @key{TAB} behavior, the following suffices: -@example -@code{rl_bind_key ('\t', rl_insert);} -@end example - -This code should be executed once at the start of your program; you -might write a function called @code{initialize_readline()} which -performs this and other desired initializations, such as installing -custom completers (@pxref{Custom Completers}). - -@node Custom Functions -@section Custom Functions - -Readline provides many functions for manipulating the text of -the line, but it isn't possible to anticipate the needs of all -programs. This section describes the various functions and variables -defined within the Readline library which allow a user program to add -customized functionality to Readline. - -Before declaring any functions that customize Readline's behavior, or -using any functionality Readline provides in other code, an -application writer should include the file @code{} -in any file that uses Readline's features. Since some of the definitions -in @code{readline.h} use the @code{stdio} library, the file -@code{} should be included before @code{readline.h}. - -@code{readline.h} defines a C preprocessor variable that should -be treated as an integer, @code{RL_READLINE_VERSION}, which may -be used to conditionally compile application code depending on -the installed Readline version. The value is a hexadecimal -encoding of the major and minor version numbers of the library, -of the form 0x@var{MMmm}. @var{MM} is the two-digit major -version number; @var{mm} is the two-digit minor version number. -For Readline 4.2, for example, the value of -@code{RL_READLINE_VERSION} would be @code{0x0402}. - -@menu -* Readline Typedefs:: C declarations to make code readable. -* Function Writing:: Variables and calling conventions. -@end menu - -@node Readline Typedefs -@subsection Readline Typedefs - -For readabilty, we declare a number of new object types, all pointers -to functions. - -The reason for declaring these new types is to make it easier to write -code describing pointers to C functions with appropriately prototyped -arguments and return values. - -For instance, say we want to declare a variable @var{func} as a pointer -to a function which takes two @code{int} arguments and returns an -@code{int} (this is the type of all of the Readline bindable functions). -Instead of the classic C declaration - -@code{int (*func)();} - -@noindent -or the ANSI-C style declaration - -@code{int (*func)(int, int);} - -@noindent -we may write - -@code{rl_command_func_t *func;} - -The full list of function pointer types available is - -@table @code -@item typedef int rl_command_func_t (int, int); - -@item typedef char *rl_compentry_func_t (const char *, int); - -@item typedef char **rl_completion_func_t (const char *, int, int); - -@item typedef char *rl_quote_func_t (char *, int, char *); - -@item typedef char *rl_dequote_func_t (char *, int); - -@item typedef int rl_compignore_func_t (char **); - -@item typedef void rl_compdisp_func_t (char **, int, int); - -@item typedef int rl_hook_func_t (void); - -@item typedef int rl_getc_func_t (FILE *); - -@item typedef int rl_linebuf_func_t (char *, int); - -@item typedef int rl_intfunc_t (int); -@item #define rl_ivoidfunc_t rl_hook_func_t -@item typedef int rl_icpfunc_t (char *); -@item typedef int rl_icppfunc_t (char **); - -@item typedef void rl_voidfunc_t (void); -@item typedef void rl_vintfunc_t (int); -@item typedef void rl_vcpfunc_t (char *); -@item typedef void rl_vcppfunc_t (char **); - -@end table - -@node Function Writing -@subsection Writing a New Function - -In order to write new functions for Readline, you need to know the -calling conventions for keyboard-invoked functions, and the names of the -variables that describe the current state of the line read so far. - -The calling sequence for a command @code{foo} looks like - -@example -@code{int foo (int count, int key)} -@end example - -@noindent -where @var{count} is the numeric argument (or 1 if defaulted) and -@var{key} is the key that invoked this function. - -It is completely up to the function as to what should be done with the -numeric argument. Some functions use it as a repeat count, some -as a flag, and others to choose alternate behavior (refreshing the current -line as opposed to refreshing the screen, for example). Some choose to -ignore it. In general, if a -function uses the numeric argument as a repeat count, it should be able -to do something useful with both negative and positive arguments. -At the very least, it should be aware that it can be passed a -negative argument. - -A command function should return 0 if its action completes successfully, -and a non-zero value if some error occurs. -This is the convention obeyed by all of the builtin Readline bindable -command functions. - -@node Readline Variables -@section Readline Variables - -These variables are available to function writers. - -@deftypevar {char *} rl_line_buffer -This is the line gathered so far. You are welcome to modify the -contents of the line, but see @ref{Allowing Undoing}. The -function @code{rl_extend_line_buffer} is available to increase -the memory allocated to @code{rl_line_buffer}. -@end deftypevar - -@deftypevar int rl_point -The offset of the current cursor position in @code{rl_line_buffer} -(the @emph{point}). -@end deftypevar - -@deftypevar int rl_end -The number of characters present in @code{rl_line_buffer}. When -@code{rl_point} is at the end of the line, @code{rl_point} and -@code{rl_end} are equal. -@end deftypevar - -@deftypevar int rl_mark -The @var{mark} (saved position) in the current line. If set, the mark -and point define a @emph{region}. -@end deftypevar - -@deftypevar int rl_done -Setting this to a non-zero value causes Readline to return the current -line immediately. -@end deftypevar - -@deftypevar int rl_num_chars_to_read -Setting this to a positive value before calling @code{readline()} causes -Readline to return after accepting that many characters, rather -than reading up to a character bound to @code{accept-line}. -@end deftypevar - -@deftypevar int rl_pending_input -Setting this to a value makes it the next keystroke read. This is a -way to stuff a single character into the input stream. -@end deftypevar - -@deftypevar int rl_dispatching -Set to a non-zero value if a function is being called from a key binding; -zero otherwise. Application functions can test this to discover whether -they were called directly or by Readline's dispatching mechanism. -@end deftypevar - -@deftypevar int rl_erase_empty_line -Setting this to a non-zero value causes Readline to completely erase -the current line, including any prompt, any time a newline is typed as -the only character on an otherwise-empty line. The cursor is moved to -the beginning of the newly-blank line. -@end deftypevar - -@deftypevar {char *} rl_prompt -The prompt Readline uses. This is set from the argument to -@code{readline()}, and should not be assigned to directly. -The @code{rl_set_prompt()} function (@pxref{Redisplay}) may -be used to modify the prompt string after calling @code{readline()}. -@end deftypevar - -@deftypevar {char *} rl_display_prompt -The string displayed as the prompt. This is usually identical to -@var{rl_prompt}, but may be changed temporarily by functions that -use the prompt string as a message area, such as incremental search. -@end deftypevar - -@deftypevar int rl_already_prompted -If an application wishes to display the prompt itself, rather than have -Readline do it the first time @code{readline()} is called, it should set -this variable to a non-zero value after displaying the prompt. -The prompt must also be passed as the argument to @code{readline()} so -the redisplay functions can update the display properly. -The calling application is responsible for managing the value; Readline -never sets it. -@end deftypevar - -@deftypevar {const char *} rl_library_version -The version number of this revision of the library. -@end deftypevar - -@deftypevar int rl_readline_version -An integer encoding the current version of the library. The encoding is -of the form 0x@var{MMmm}, where @var{MM} is the two-digit major version -number, and @var{mm} is the two-digit minor version number. -For example, for Readline-4.2, @code{rl_readline_version} would have the -value 0x0402. -@end deftypevar - -@deftypevar {int} rl_gnu_readline_p -Always set to 1, denoting that this is @sc{gnu} readline rather than some -emulation. -@end deftypevar - -@deftypevar {const char *} rl_terminal_name -The terminal type, used for initialization. If not set by the application, -Readline sets this to the value of the @env{TERM} environment variable -the first time it is called. -@end deftypevar - -@deftypevar {const char *} rl_readline_name -This variable is set to a unique name by each application using Readline. -The value allows conditional parsing of the inputrc file -(@pxref{Conditional Init Constructs}). -@end deftypevar - -@deftypevar {FILE *} rl_instream -The stdio stream from which Readline reads input. -If @code{NULL}, Readline defaults to @var{stdin}. -@end deftypevar - -@deftypevar {FILE *} rl_outstream -The stdio stream to which Readline performs output. -If @code{NULL}, Readline defaults to @var{stdout}. -@end deftypevar - -@deftypevar int rl_prefer_env_winsize -If non-zero, Readline gives values found in the @env{LINES} and -@env{COLUMNS} environment variables greater precedence than values fetched -from the kernel when computing the screen dimensions. -@end deftypevar - -@deftypevar {rl_command_func_t *} rl_last_func -The address of the last command function Readline executed. May be used to -test whether or not a function is being executed twice in succession, for -example. -@end deftypevar - -@deftypevar {rl_hook_func_t *} rl_startup_hook -If non-zero, this is the address of a function to call just -before @code{readline} prints the first prompt. -@end deftypevar - -@deftypevar {rl_hook_func_t *} rl_pre_input_hook -If non-zero, this is the address of a function to call after -the first prompt has been printed and just before @code{readline} -starts reading input characters. -@end deftypevar - -@deftypevar {rl_hook_func_t *} rl_event_hook -If non-zero, this is the address of a function to call periodically -when Readline is waiting for terminal input. -By default, this will be called at most ten times a second if there -is no keyboard input. -@end deftypevar - -@deftypevar {rl_getc_func_t *} rl_getc_function -If non-zero, Readline will call indirectly through this pointer -to get a character from the input stream. By default, it is set to -@code{rl_getc}, the default Readline character input function -(@pxref{Character Input}). -@end deftypevar - -@deftypevar {rl_voidfunc_t *} rl_redisplay_function -If non-zero, Readline will call indirectly through this pointer -to update the display with the current contents of the editing buffer. -By default, it is set to @code{rl_redisplay}, the default Readline -redisplay function (@pxref{Redisplay}). -@end deftypevar - -@deftypevar {rl_vintfunc_t *} rl_prep_term_function -If non-zero, Readline will call indirectly through this pointer -to initialize the terminal. The function takes a single argument, an -@code{int} flag that says whether or not to use eight-bit characters. -By default, this is set to @code{rl_prep_terminal} -(@pxref{Terminal Management}). -@end deftypevar - -@deftypevar {rl_voidfunc_t *} rl_deprep_term_function -If non-zero, Readline will call indirectly through this pointer -to reset the terminal. This function should undo the effects of -@code{rl_prep_term_function}. -By default, this is set to @code{rl_deprep_terminal} -(@pxref{Terminal Management}). -@end deftypevar - -@deftypevar {Keymap} rl_executing_keymap -This variable is set to the keymap (@pxref{Keymaps}) in which the -currently executing readline function was found. -@end deftypevar - -@deftypevar {Keymap} rl_binding_keymap -This variable is set to the keymap (@pxref{Keymaps}) in which the -last key binding occurred. -@end deftypevar - -@deftypevar {char *} rl_executing_macro -This variable is set to the text of any currently-executing macro. -@end deftypevar - -@deftypevar int rl_executing_key -The key that caused the dispatch to the currently-executing Readline function. -@end deftypevar - -@deftypevar {char *} rl_executing_keyseq -The full key sequence that caused the dispatch to the currently-executing -Readline function. -@end deftypevar - -@deftypevar int rl_key_sequence_length -The number of characters in @var{rl_executing_keyseq}. -@end deftypevar - -@deftypevar {int} rl_readline_state -A variable with bit values that encapsulate the current Readline state. -A bit is set with the @code{RL_SETSTATE} macro, and unset with the -@code{RL_UNSETSTATE} macro. Use the @code{RL_ISSTATE} macro to test -whether a particular state bit is set. Current state bits include: - -@table @code -@item RL_STATE_NONE -Readline has not yet been called, nor has it begun to intialize. -@item RL_STATE_INITIALIZING -Readline is initializing its internal data structures. -@item RL_STATE_INITIALIZED -Readline has completed its initialization. -@item RL_STATE_TERMPREPPED -Readline has modified the terminal modes to do its own input and redisplay. -@item RL_STATE_READCMD -Readline is reading a command from the keyboard. -@item RL_STATE_METANEXT -Readline is reading more input after reading the meta-prefix character. -@item RL_STATE_DISPATCHING -Readline is dispatching to a command. -@item RL_STATE_MOREINPUT -Readline is reading more input while executing an editing command. -@item RL_STATE_ISEARCH -Readline is performing an incremental history search. -@item RL_STATE_NSEARCH -Readline is performing a non-incremental history search. -@item RL_STATE_SEARCH -Readline is searching backward or forward through the history for a string. -@item RL_STATE_NUMERICARG -Readline is reading a numeric argument. -@item RL_STATE_MACROINPUT -Readline is currently getting its input from a previously-defined keyboard -macro. -@item RL_STATE_MACRODEF -Readline is currently reading characters defining a keyboard macro. -@item RL_STATE_OVERWRITE -Readline is in overwrite mode. -@item RL_STATE_COMPLETING -Readline is performing word completion. -@item RL_STATE_SIGHANDLER -Readline is currently executing the readline signal handler. -@item RL_STATE_UNDOING -Readline is performing an undo. -@item RL_STATE_INPUTPENDING -Readline has input pending due to a call to @code{rl_execute_next()}. -@item RL_STATE_TTYCSAVED -Readline has saved the values of the terminal's special characters. -@item RL_STATE_CALLBACK -Readline is currently using the alternate (callback) interface -(@pxref{Alternate Interface}). -@item RL_STATE_VIMOTION -Readline is reading the argument to a vi-mode "motion" command. -@item RL_STATE_MULTIKEY -Readline is reading a multiple-keystroke command. -@item RL_STATE_VICMDONCE -Readline has entered vi command (movement) mode at least one time during -the current call to @code{readline()}. -@item RL_STATE_DONE -Readline has read a key sequence bound to @code{accept-line} -and is about to return the line to the caller. -@end table - -@end deftypevar - -@deftypevar {int} rl_explicit_arg -Set to a non-zero value if an explicit numeric argument was specified by -the user. Only valid in a bindable command function. -@end deftypevar - -@deftypevar {int} rl_numeric_arg -Set to the value of any numeric argument explicitly specified by the user -before executing the current Readline function. Only valid in a bindable -command function. -@end deftypevar - -@deftypevar {int} rl_editing_mode -Set to a value denoting Readline's current editing mode. A value of -@var{1} means Readline is currently in emacs mode; @var{0} -means that vi mode is active. -@end deftypevar - - -@node Readline Convenience Functions -@section Readline Convenience Functions - -@menu -* Function Naming:: How to give a function you write a name. -* Keymaps:: Making keymaps. -* Binding Keys:: Changing Keymaps. -* Associating Function Names and Bindings:: Translate function names to - key sequences. -* Allowing Undoing:: How to make your functions undoable. -* Redisplay:: Functions to control line display. -* Modifying Text:: Functions to modify @code{rl_line_buffer}. -* Character Input:: Functions to read keyboard input. -* Terminal Management:: Functions to manage terminal settings. -* Utility Functions:: Generally useful functions and hooks. -* Miscellaneous Functions:: Functions that don't fall into any category. -* Alternate Interface:: Using Readline in a `callback' fashion. -* A Readline Example:: An example Readline function. -@end menu - -@node Function Naming -@subsection Naming a Function - -The user can dynamically change the bindings of keys while using -Readline. This is done by representing the function with a descriptive -name. The user is able to type the descriptive name when referring to -the function. Thus, in an init file, one might find - -@example -Meta-Rubout: backward-kill-word -@end example - -This binds the keystroke @key{Meta-Rubout} to the function -@emph{descriptively} named @code{backward-kill-word}. You, as the -programmer, should bind the functions you write to descriptive names as -well. Readline provides a function for doing that: - -@deftypefun int rl_add_defun (const char *name, rl_command_func_t *function, int key) -Add @var{name} to the list of named functions. Make @var{function} be -the function that gets called. If @var{key} is not -1, then bind it to -@var{function} using @code{rl_bind_key()}. -@end deftypefun - -Using this function alone is sufficient for most applications. -It is the recommended way to add a few functions to the default -functions that Readline has built in. -If you need to do something other than adding a function to Readline, -you may need to use the underlying functions described below. - -@node Keymaps -@subsection Selecting a Keymap - -Key bindings take place on a @dfn{keymap}. The keymap is the -association between the keys that the user types and the functions that -get run. You can make your own keymaps, copy existing keymaps, and tell -Readline which keymap to use. - -@deftypefun Keymap rl_make_bare_keymap (void) -Returns a new, empty keymap. The space for the keymap is allocated with -@code{malloc()}; the caller should free it by calling -@code{rl_free_keymap()} when done. -@end deftypefun - -@deftypefun Keymap rl_copy_keymap (Keymap map) -Return a new keymap which is a copy of @var{map}. -@end deftypefun - -@deftypefun Keymap rl_make_keymap (void) -Return a new keymap with the printing characters bound to rl_insert, -the lowercase Meta characters bound to run their equivalents, and -the Meta digits bound to produce numeric arguments. -@end deftypefun - -@deftypefun void rl_discard_keymap (Keymap keymap) -Free the storage associated with the data in @var{keymap}. -The caller should free @var{keymap}. -@end deftypefun - -@deftypefun void rl_free_keymap (Keymap keymap) -Free all storage associated with @var{keymap}. This calls -@code{rl_discard_keymap} to free subordindate keymaps and macros. -@end deftypefun - -Readline has several internal keymaps. These functions allow you to -change which keymap is active. - -@deftypefun Keymap rl_get_keymap (void) -Returns the currently active keymap. -@end deftypefun - -@deftypefun void rl_set_keymap (Keymap keymap) -Makes @var{keymap} the currently active keymap. -@end deftypefun - -@deftypefun Keymap rl_get_keymap_by_name (const char *name) -Return the keymap matching @var{name}. @var{name} is one which would -be supplied in a @code{set keymap} inputrc line (@pxref{Readline Init File}). -@end deftypefun - -@deftypefun {char *} rl_get_keymap_name (Keymap keymap) -Return the name matching @var{keymap}. @var{name} is one which would -be supplied in a @code{set keymap} inputrc line (@pxref{Readline Init File}). -@end deftypefun - -@node Binding Keys -@subsection Binding Keys - -Key sequences are associate with functions through the keymap. -Readline has several internal keymaps: @code{emacs_standard_keymap}, -@code{emacs_meta_keymap}, @code{emacs_ctlx_keymap}, -@code{vi_movement_keymap}, and @code{vi_insertion_keymap}. -@code{emacs_standard_keymap} is the default, and the examples in -this manual assume that. - -Since @code{readline()} installs a set of default key bindings the first -time it is called, there is always the danger that a custom binding -installed before the first call to @code{readline()} will be overridden. -An alternate mechanism is to install custom key bindings in an -initialization function assigned to the @code{rl_startup_hook} variable -(@pxref{Readline Variables}). - -These functions manage key bindings. - -@deftypefun int rl_bind_key (int key, rl_command_func_t *function) -Binds @var{key} to @var{function} in the currently active keymap. -Returns non-zero in the case of an invalid @var{key}. -@end deftypefun - -@deftypefun int rl_bind_key_in_map (int key, rl_command_func_t *function, Keymap map) -Bind @var{key} to @var{function} in @var{map}. -Returns non-zero in the case of an invalid @var{key}. -@end deftypefun - -@deftypefun int rl_bind_key_if_unbound (int key, rl_command_func_t *function) -Binds @var{key} to @var{function} if it is not already bound in the -currently active keymap. -Returns non-zero in the case of an invalid @var{key} or if @var{key} is -already bound. -@end deftypefun - -@deftypefun int rl_bind_key_if_unbound_in_map (int key, rl_command_func_t *function, Keymap map) -Binds @var{key} to @var{function} if it is not already bound in @var{map}. -Returns non-zero in the case of an invalid @var{key} or if @var{key} is -already bound. -@end deftypefun - -@deftypefun int rl_unbind_key (int key) -Bind @var{key} to the null function in the currently active keymap. -Returns non-zero in case of error. -@end deftypefun - -@deftypefun int rl_unbind_key_in_map (int key, Keymap map) -Bind @var{key} to the null function in @var{map}. -Returns non-zero in case of error. -@end deftypefun - -@deftypefun int rl_unbind_function_in_map (rl_command_func_t *function, Keymap map) -Unbind all keys that execute @var{function} in @var{map}. -@end deftypefun - -@deftypefun int rl_unbind_command_in_map (const char *command, Keymap map) -Unbind all keys that are bound to @var{command} in @var{map}. -@end deftypefun - -@deftypefun int rl_bind_keyseq (const char *keyseq, rl_command_func_t *function) -Bind the key sequence represented by the string @var{keyseq} to the function -@var{function}, beginning in the current keymap. -This makes new keymaps as necessary. -The return value is non-zero if @var{keyseq} is invalid. -@end deftypefun - -@deftypefun int rl_bind_keyseq_in_map (const char *keyseq, rl_command_func_t *function, Keymap map) -Bind the key sequence represented by the string @var{keyseq} to the function -@var{function}. This makes new keymaps as necessary. -Initial bindings are performed in @var{map}. -The return value is non-zero if @var{keyseq} is invalid. -@end deftypefun - -@deftypefun int rl_set_key (const char *keyseq, rl_command_func_t *function, Keymap map) -Equivalent to @code{rl_bind_keyseq_in_map}. -@end deftypefun - -@deftypefun int rl_bind_keyseq_if_unbound (const char *keyseq, rl_command_func_t *function) -Binds @var{keyseq} to @var{function} if it is not already bound in the -currently active keymap. -Returns non-zero in the case of an invalid @var{keyseq} or if @var{keyseq} is -already bound. -@end deftypefun - -@deftypefun int rl_bind_keyseq_if_unbound_in_map (const char *keyseq, rl_command_func_t *function, Keymap map) -Binds @var{keyseq} to @var{function} if it is not already bound in @var{map}. -Returns non-zero in the case of an invalid @var{keyseq} or if @var{keyseq} is -already bound. -@end deftypefun - -@deftypefun int rl_generic_bind (int type, const char *keyseq, char *data, Keymap map) -Bind the key sequence represented by the string @var{keyseq} to the arbitrary -pointer @var{data}. @var{type} says what kind of data is pointed to by -@var{data}; this can be a function (@code{ISFUNC}), a macro -(@code{ISMACR}), or a keymap (@code{ISKMAP}). This makes new keymaps as -necessary. The initial keymap in which to do bindings is @var{map}. -@end deftypefun - -@deftypefun int rl_parse_and_bind (char *line) -Parse @var{line} as if it had been read from the @code{inputrc} file and -perform any key bindings and variable assignments found -(@pxref{Readline Init File}). -@end deftypefun - -@deftypefun int rl_read_init_file (const char *filename) -Read keybindings and variable assignments from @var{filename} -(@pxref{Readline Init File}). -@end deftypefun - -@node Associating Function Names and Bindings -@subsection Associating Function Names and Bindings - -These functions allow you to find out what keys invoke named functions -and the functions invoked by a particular key sequence. You may also -associate a new function name with an arbitrary function. - -@deftypefun {rl_command_func_t *} rl_named_function (const char *name) -Return the function with name @var{name}. -@end deftypefun - -@deftypefun {rl_command_func_t *} rl_function_of_keyseq (const char *keyseq, Keymap map, int *type) -Return the function invoked by @var{keyseq} in keymap @var{map}. -If @var{map} is @code{NULL}, the current keymap is used. If @var{type} is -not @code{NULL}, the type of the object is returned in the @code{int} variable -it points to (one of @code{ISFUNC}, @code{ISKMAP}, or @code{ISMACR}). -@end deftypefun - -@deftypefun {char **} rl_invoking_keyseqs (rl_command_func_t *function) -Return an array of strings representing the key sequences used to -invoke @var{function} in the current keymap. -@end deftypefun - -@deftypefun {char **} rl_invoking_keyseqs_in_map (rl_command_func_t *function, Keymap map) -Return an array of strings representing the key sequences used to -invoke @var{function} in the keymap @var{map}. -@end deftypefun - -@deftypefun void rl_function_dumper (int readable) -Print the readline function names and the key sequences currently -bound to them to @code{rl_outstream}. If @var{readable} is non-zero, -the list is formatted in such a way that it can be made part of an -@code{inputrc} file and re-read. -@end deftypefun - -@deftypefun void rl_list_funmap_names (void) -Print the names of all bindable Readline functions to @code{rl_outstream}. -@end deftypefun - -@deftypefun {const char **} rl_funmap_names (void) -Return a NULL terminated array of known function names. The array is -sorted. The array itself is allocated, but not the strings inside. You -should free the array, but not the pointers, using @code{free} or -@code{rl_free} when you are done. -@end deftypefun - -@deftypefun int rl_add_funmap_entry (const char *name, rl_command_func_t *function) -Add @var{name} to the list of bindable Readline command names, and make -@var{function} the function to be called when @var{name} is invoked. -@end deftypefun - -@node Allowing Undoing -@subsection Allowing Undoing - -Supporting the undo command is a painless thing, and makes your -functions much more useful. It is certainly easy to try -something if you know you can undo it. - -If your function simply inserts text once, or deletes text once, and -uses @code{rl_insert_text()} or @code{rl_delete_text()} to do it, then -undoing is already done for you automatically. - -If you do multiple insertions or multiple deletions, or any combination -of these operations, you should group them together into one operation. -This is done with @code{rl_begin_undo_group()} and -@code{rl_end_undo_group()}. - -The types of events that can be undone are: - -@smallexample -enum undo_code @{ UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END @}; -@end smallexample - -Notice that @code{UNDO_DELETE} means to insert some text, and -@code{UNDO_INSERT} means to delete some text. That is, the undo code -tells what to undo, not how to undo it. @code{UNDO_BEGIN} and -@code{UNDO_END} are tags added by @code{rl_begin_undo_group()} and -@code{rl_end_undo_group()}. - -@deftypefun int rl_begin_undo_group (void) -Begins saving undo information in a group construct. The undo -information usually comes from calls to @code{rl_insert_text()} and -@code{rl_delete_text()}, but could be the result of calls to -@code{rl_add_undo()}. -@end deftypefun - -@deftypefun int rl_end_undo_group (void) -Closes the current undo group started with @code{rl_begin_undo_group -()}. There should be one call to @code{rl_end_undo_group()} -for each call to @code{rl_begin_undo_group()}. -@end deftypefun - -@deftypefun void rl_add_undo (enum undo_code what, int start, int end, char *text) -Remember how to undo an event (according to @var{what}). The affected -text runs from @var{start} to @var{end}, and encompasses @var{text}. -@end deftypefun - -@deftypefun void rl_free_undo_list (void) -Free the existing undo list. -@end deftypefun - -@deftypefun int rl_do_undo (void) -Undo the first thing on the undo list. Returns @code{0} if there was -nothing to undo, non-zero if something was undone. -@end deftypefun - -Finally, if you neither insert nor delete text, but directly modify the -existing text (e.g., change its case), call @code{rl_modifying()} -once, just before you modify the text. You must supply the indices of -the text range that you are going to modify. - -@deftypefun int rl_modifying (int start, int end) -Tell Readline to save the text between @var{start} and @var{end} as a -single undo unit. It is assumed that you will subsequently modify -that text. -@end deftypefun - -@node Redisplay -@subsection Redisplay - -@deftypefun void rl_redisplay (void) -Change what's displayed on the screen to reflect the current contents -of @code{rl_line_buffer}. -@end deftypefun - -@deftypefun int rl_forced_update_display (void) -Force the line to be updated and redisplayed, whether or not -Readline thinks the screen display is correct. -@end deftypefun - -@deftypefun int rl_on_new_line (void) -Tell the update functions that we have moved onto a new (empty) line, -usually after ouputting a newline. -@end deftypefun - -@deftypefun int rl_on_new_line_with_prompt (void) -Tell the update functions that we have moved onto a new line, with -@var{rl_prompt} already displayed. -This could be used by applications that want to output the prompt string -themselves, but still need Readline to know the prompt string length for -redisplay. -It should be used after setting @var{rl_already_prompted}. -@end deftypefun - -@deftypefun int rl_reset_line_state (void) -Reset the display state to a clean state and redisplay the current line -starting on a new line. -@end deftypefun - -@deftypefun int rl_crlf (void) -Move the cursor to the start of the next screen line. -@end deftypefun - -@deftypefun int rl_show_char (int c) -Display character @var{c} on @code{rl_outstream}. -If Readline has not been set to display meta characters directly, this -will convert meta characters to a meta-prefixed key sequence. -This is intended for use by applications which wish to do their own -redisplay. -@end deftypefun - -@deftypefun int rl_message (const char *, @dots{}) -The arguments are a format string as would be supplied to @code{printf}, -possibly containing conversion specifications such as @samp{%d}, and -any additional arguments necessary to satisfy the conversion specifications. -The resulting string is displayed in the @dfn{echo area}. The echo area -is also used to display numeric arguments and search strings. -You should call @code{rl_save_prompt} to save the prompt information -before calling this function. -@end deftypefun - -@deftypefun int rl_clear_message (void) -Clear the message in the echo area. If the prompt was saved with a call to -@code{rl_save_prompt} before the last call to @code{rl_message}, -call @code{rl_restore_prompt} before calling this function. -@end deftypefun - -@deftypefun void rl_save_prompt (void) -Save the local Readline prompt display state in preparation for -displaying a new message in the message area with @code{rl_message()}. -@end deftypefun - -@deftypefun void rl_restore_prompt (void) -Restore the local Readline prompt display state saved by the most -recent call to @code{rl_save_prompt}. -if @code{rl_save_prompt} was called to save the prompt before a call -to @code{rl_message}, this function should be called before the -corresponding call to @code{rl_clear_message}. -@end deftypefun - -@deftypefun int rl_expand_prompt (char *prompt) -Expand any special character sequences in @var{prompt} and set up the -local Readline prompt redisplay variables. -This function is called by @code{readline()}. It may also be called to -expand the primary prompt if the @code{rl_on_new_line_with_prompt()} -function or @code{rl_already_prompted} variable is used. -It returns the number of visible characters on the last line of the -(possibly multi-line) prompt. -Applications may indicate that the prompt contains characters that take -up no physical screen space when displayed by bracketing a sequence of -such characters with the special markers @code{RL_PROMPT_START_IGNORE} -and @code{RL_PROMPT_END_IGNORE} (declared in @file{readline.h}. This may -be used to embed terminal-specific escape sequences in prompts. -@end deftypefun - -@deftypefun int rl_set_prompt (const char *prompt) -Make Readline use @var{prompt} for subsequent redisplay. This calls -@code{rl_expand_prompt()} to expand the prompt and sets @code{rl_prompt} -to the result. -@end deftypefun - -@node Modifying Text -@subsection Modifying Text - -@deftypefun int rl_insert_text (const char *text) -Insert @var{text} into the line at the current cursor position. -Returns the number of characters inserted. -@end deftypefun - -@deftypefun int rl_delete_text (int start, int end) -Delete the text between @var{start} and @var{end} in the current line. -Returns the number of characters deleted. -@end deftypefun - -@deftypefun {char *} rl_copy_text (int start, int end) -Return a copy of the text between @var{start} and @var{end} in -the current line. -@end deftypefun - -@deftypefun int rl_kill_text (int start, int end) -Copy the text between @var{start} and @var{end} in the current line -to the kill ring, appending or prepending to the last kill if the -last command was a kill command. The text is deleted. -If @var{start} is less than @var{end}, -the text is appended, otherwise prepended. If the last command was -not a kill, a new kill ring slot is used. -@end deftypefun - -@deftypefun int rl_push_macro_input (char *macro) -Cause @var{macro} to be inserted into the line, as if it had been invoked -by a key bound to a macro. Not especially useful; use -@code{rl_insert_text()} instead. -@end deftypefun - -@node Character Input -@subsection Character Input - -@deftypefun int rl_read_key (void) -Return the next character available from Readline's current input stream. -This handles input inserted into -the input stream via @var{rl_pending_input} (@pxref{Readline Variables}) -and @code{rl_stuff_char()}, macros, and characters read from the keyboard. -While waiting for input, this function will call any function assigned to -the @code{rl_event_hook} variable. -@end deftypefun - -@deftypefun int rl_getc (FILE *stream) -Return the next character available from @var{stream}, which is assumed to -be the keyboard. -@end deftypefun - -@deftypefun int rl_stuff_char (int c) -Insert @var{c} into the Readline input stream. It will be "read" -before Readline attempts to read characters from the terminal with -@code{rl_read_key()}. Up to 512 characters may be pushed back. -@code{rl_stuff_char} returns 1 if the character was successfully inserted; -0 otherwise. -@end deftypefun - -@deftypefun int rl_execute_next (int c) -Make @var{c} be the next command to be executed when @code{rl_read_key()} -is called. This sets @var{rl_pending_input}. -@end deftypefun - -@deftypefun int rl_clear_pending_input (void) -Unset @var{rl_pending_input}, effectively negating the effect of any -previous call to @code{rl_execute_next()}. This works only if the -pending input has not already been read with @code{rl_read_key()}. -@end deftypefun - -@deftypefun int rl_set_keyboard_input_timeout (int u) -While waiting for keyboard input in @code{rl_read_key()}, Readline will -wait for @var{u} microseconds for input before calling any function -assigned to @code{rl_event_hook}. @var{u} must be greater than or equal -to zero (a zero-length timeout is equivalent to a poll). -The default waiting period is one-tenth of a second. -Returns the old timeout value. -@end deftypefun - -@node Terminal Management -@subsection Terminal Management - -@deftypefun void rl_prep_terminal (int meta_flag) -Modify the terminal settings for Readline's use, so @code{readline()} -can read a single character at a time from the keyboard. -The @var{meta_flag} argument should be non-zero if Readline should -read eight-bit input. -@end deftypefun - -@deftypefun void rl_deprep_terminal (void) -Undo the effects of @code{rl_prep_terminal()}, leaving the terminal in -the state in which it was before the most recent call to -@code{rl_prep_terminal()}. -@end deftypefun - -@deftypefun void rl_tty_set_default_bindings (Keymap kmap) -Read the operating system's terminal editing characters (as would be -displayed by @code{stty}) to their Readline equivalents. -The bindings are performed in @var{kmap}. -@end deftypefun - -@deftypefun void rl_tty_unset_default_bindings (Keymap kmap) -Reset the bindings manipulated by @code{rl_tty_set_default_bindings} so -that the terminal editing characters are bound to @code{rl_insert}. -The bindings are performed in @var{kmap}. -@end deftypefun - -@deftypefun int rl_reset_terminal (const char *terminal_name) -Reinitialize Readline's idea of the terminal settings using -@var{terminal_name} as the terminal type (e.g., @code{vt100}). -If @var{terminal_name} is @code{NULL}, the value of the @code{TERM} -environment variable is used. -@end deftypefun - -@node Utility Functions -@subsection Utility Functions - -@deftypefun int rl_save_state (struct readline_state *sp) -Save a snapshot of Readline's internal state to @var{sp}. -The contents of the @var{readline_state} structure are documented -in @file{readline.h}. -The caller is responsible for allocating the structure. -@end deftypefun - -@deftypefun int rl_restore_state (struct readline_state *sp) -Restore Readline's internal state to that stored in @var{sp}, which must -have been saved by a call to @code{rl_save_state}. -The contents of the @var{readline_state} structure are documented -in @file{readline.h}. -The caller is responsible for freeing the structure. -@end deftypefun - -@deftypefun void rl_free (void *mem) -Deallocate the memory pointed to by @var{mem}. @var{mem} must have been -allocated by @code{malloc}. -@end deftypefun - -@deftypefun void rl_replace_line (const char *text, int clear_undo) -Replace the contents of @code{rl_line_buffer} with @var{text}. -The point and mark are preserved, if possible. -If @var{clear_undo} is non-zero, the undo list associated with the -current line is cleared. -@end deftypefun - -@deftypefun void rl_extend_line_buffer (int len) -Ensure that @code{rl_line_buffer} has enough space to hold @var{len} -characters, possibly reallocating it if necessary. -@end deftypefun - -@deftypefun int rl_initialize (void) -Initialize or re-initialize Readline's internal state. -It's not strictly necessary to call this; @code{readline()} calls it before -reading any input. -@end deftypefun - -@deftypefun int rl_ding (void) -Ring the terminal bell, obeying the setting of @code{bell-style}. -@end deftypefun - -@deftypefun int rl_alphabetic (int c) -Return 1 if @var{c} is an alphabetic character. -@end deftypefun - -@deftypefun void rl_display_match_list (char **matches, int len, int max) -A convenience function for displaying a list of strings in -columnar format on Readline's output stream. @code{matches} is the list -of strings, in argv format, such as a list of completion matches. -@code{len} is the number of strings in @code{matches}, and @code{max} -is the length of the longest string in @code{matches}. This function uses -the setting of @code{print-completions-horizontally} to select how the -matches are displayed (@pxref{Readline Init File Syntax}). -When displaying completions, this function sets the number of columns used -for display to the value of @code{completion-display-width}, the value of -the environment variable @env{COLUMNS}, or the screen width, in that order. -@end deftypefun - -The following are implemented as macros, defined in @code{chardefs.h}. -Applications should refrain from using them. - -@deftypefun int _rl_uppercase_p (int c) -Return 1 if @var{c} is an uppercase alphabetic character. -@end deftypefun - -@deftypefun int _rl_lowercase_p (int c) -Return 1 if @var{c} is a lowercase alphabetic character. -@end deftypefun - -@deftypefun int _rl_digit_p (int c) -Return 1 if @var{c} is a numeric character. -@end deftypefun - -@deftypefun int _rl_to_upper (int c) -If @var{c} is a lowercase alphabetic character, return the corresponding -uppercase character. -@end deftypefun - -@deftypefun int _rl_to_lower (int c) -If @var{c} is an uppercase alphabetic character, return the corresponding -lowercase character. -@end deftypefun - -@deftypefun int _rl_digit_value (int c) -If @var{c} is a number, return the value it represents. -@end deftypefun - -@node Miscellaneous Functions -@subsection Miscellaneous Functions - -@deftypefun int rl_macro_bind (const char *keyseq, const char *macro, Keymap map) -Bind the key sequence @var{keyseq} to invoke the macro @var{macro}. -The binding is performed in @var{map}. When @var{keyseq} is invoked, the -@var{macro} will be inserted into the line. This function is deprecated; -use @code{rl_generic_bind()} instead. -@end deftypefun - -@deftypefun void rl_macro_dumper (int readable) -Print the key sequences bound to macros and their values, using -the current keymap, to @code{rl_outstream}. -If @var{readable} is non-zero, the list is formatted in such a way -that it can be made part of an @code{inputrc} file and re-read. -@end deftypefun - -@deftypefun int rl_variable_bind (const char *variable, const char *value) -Make the Readline variable @var{variable} have @var{value}. -This behaves as if the readline command -@samp{set @var{variable} @var{value}} had been executed in an @code{inputrc} -file (@pxref{Readline Init File Syntax}). -@end deftypefun - -@deftypefun {char *} rl_variable_value (const char *variable) -Return a string representing the value of the Readline variable @var{variable}. -For boolean variables, this string is either @samp{on} or @samp{off}. -@end deftypefun - -@deftypefun void rl_variable_dumper (int readable) -Print the readline variable names and their current values -to @code{rl_outstream}. -If @var{readable} is non-zero, the list is formatted in such a way -that it can be made part of an @code{inputrc} file and re-read. -@end deftypefun - -@deftypefun int rl_set_paren_blink_timeout (int u) -Set the time interval (in microseconds) that Readline waits when showing -a balancing character when @code{blink-matching-paren} has been enabled. -@end deftypefun - -@deftypefun {char *} rl_get_termcap (const char *cap) -Retrieve the string value of the termcap capability @var{cap}. -Readline fetches the termcap entry for the current terminal name and -uses those capabilities to move around the screen line and perform other -terminal-specific operations, like erasing a line. Readline does not -use all of a terminal's capabilities, and this function will return -values for only those capabilities Readline uses. -@end deftypefun - -@node Alternate Interface -@subsection Alternate Interface - -An alternate interface is available to plain @code{readline()}. Some -applications need to interleave keyboard I/O with file, device, or -window system I/O, typically by using a main loop to @code{select()} -on various file descriptors. To accomodate this need, readline can -also be invoked as a `callback' function from an event loop. There -are functions available to make this easy. - -@deftypefun void rl_callback_handler_install (const char *prompt, rl_vcpfunc_t *lhandler) -Set up the terminal for readline I/O and display the initial -expanded value of @var{prompt}. Save the value of @var{lhandler} to -use as a function to call when a complete line of input has been entered. -The function takes the text of the line as an argument. -@end deftypefun - -@deftypefun void rl_callback_read_char (void) -Whenever an application determines that keyboard input is available, it -should call @code{rl_callback_read_char()}, which will read the next -character from the current input source. -If that character completes the line, @code{rl_callback_read_char} will -invoke the @var{lhandler} function saved by @code{rl_callback_handler_install} -to process the line. -Before calling the @var{lhandler} function, the terminal settings are -reset to the values they had before calling -@code{rl_callback_handler_install}. -If the @var{lhandler} function returns, -the terminal settings are modified for Readline's use again. -@code{EOF} is indicated by calling @var{lhandler} with a -@code{NULL} line. -@end deftypefun - -@deftypefun void rl_callback_handler_remove (void) -Restore the terminal to its initial state and remove the line handler. -This may be called from within a callback as well as independently. -If the @var{lhandler} installed by @code{rl_callback_handler_install} -does not exit the program, either this function or the function referred -to by the value of @code{rl_deprep_term_function} should be called before -the program exits to reset the terminal settings. -@end deftypefun - -@node A Readline Example -@subsection A Readline Example - -Here is a function which changes lowercase characters to their uppercase -equivalents, and uppercase characters to lowercase. If -this function was bound to @samp{M-c}, then typing @samp{M-c} would -change the case of the character under point. Typing @samp{M-1 0 M-c} -would change the case of the following 10 characters, leaving the cursor on -the last character changed. - -@example -/* Invert the case of the COUNT following characters. */ -int -invert_case_line (count, key) - int count, key; -@{ - register int start, end, i; - - start = rl_point; - - if (rl_point >= rl_end) - return (0); - - if (count < 0) - @{ - direction = -1; - count = -count; - @} - else - direction = 1; - - /* Find the end of the range to modify. */ - end = start + (count * direction); - - /* Force it to be within range. */ - if (end > rl_end) - end = rl_end; - else if (end < 0) - end = 0; - - if (start == end) - return (0); - - if (start > end) - @{ - int temp = start; - start = end; - end = temp; - @} - - /* Tell readline that we are modifying the line, - so it will save the undo information. */ - rl_modifying (start, end); - - for (i = start; i != end; i++) - @{ - if (_rl_uppercase_p (rl_line_buffer[i])) - rl_line_buffer[i] = _rl_to_lower (rl_line_buffer[i]); - else if (_rl_lowercase_p (rl_line_buffer[i])) - rl_line_buffer[i] = _rl_to_upper (rl_line_buffer[i]); - @} - /* Move point to on top of the last character changed. */ - rl_point = (direction == 1) ? end - 1 : start; - return (0); -@} -@end example - -@node Readline Signal Handling -@section Readline Signal Handling - -Signals are asynchronous events sent to a process by the Unix kernel, -sometimes on behalf of another process. They are intended to indicate -exceptional events, like a user pressing the interrupt key on his terminal, -or a network connection being broken. There is a class of signals that can -be sent to the process currently reading input from the keyboard. Since -Readline changes the terminal attributes when it is called, it needs to -perform special processing when such a signal is received in order to -restore the terminal to a sane state, or provide application writers with -functions to do so manually. - -Readline contains an internal signal handler that is installed for a -number of signals (@code{SIGINT}, @code{SIGQUIT}, @code{SIGTERM}, -@code{SIGHUP}, -@code{SIGALRM}, @code{SIGTSTP}, @code{SIGTTIN}, and @code{SIGTTOU}). -When one of these signals is received, the signal handler -will reset the terminal attributes to those that were in effect before -@code{readline()} was called, reset the signal handling to what it was -before @code{readline()} was called, and resend the signal to the calling -application. -If and when the calling application's signal handler returns, Readline -will reinitialize the terminal and continue to accept input. -When a @code{SIGINT} is received, the Readline signal handler performs -some additional work, which will cause any partially-entered line to be -aborted (see the description of @code{rl_free_line_state()} below). - -There is an additional Readline signal handler, for @code{SIGWINCH}, which -the kernel sends to a process whenever the terminal's size changes (for -example, if a user resizes an @code{xterm}). The Readline @code{SIGWINCH} -handler updates Readline's internal screen size information, and then calls -any @code{SIGWINCH} signal handler the calling application has installed. -Readline calls the application's @code{SIGWINCH} signal handler without -resetting the terminal to its original state. If the application's signal -handler does more than update its idea of the terminal size and return (for -example, a @code{longjmp} back to a main processing loop), it @emph{must} -call @code{rl_cleanup_after_signal()} (described below), to restore the -terminal state. - -Readline provides two variables that allow application writers to -control whether or not it will catch certain signals and act on them -when they are received. It is important that applications change the -values of these variables only when calling @code{readline()}, not in -a signal handler, so Readline's internal signal state is not corrupted. - -@deftypevar int rl_catch_signals -If this variable is non-zero, Readline will install signal handlers for -@code{SIGINT}, @code{SIGQUIT}, @code{SIGTERM}, @code{SIGHUP}, @code{SIGALRM}, -@code{SIGTSTP}, @code{SIGTTIN}, and @code{SIGTTOU}. - -The default value of @code{rl_catch_signals} is 1. -@end deftypevar - -@deftypevar int rl_catch_sigwinch -If this variable is non-zero, Readline will install a signal handler for -@code{SIGWINCH}. - -The default value of @code{rl_catch_sigwinch} is 1. -@end deftypevar - -If an application does not wish to have Readline catch any signals, or -to handle signals other than those Readline catches (@code{SIGHUP}, -for example), -Readline provides convenience functions to do the necessary terminal -and internal state cleanup upon receipt of a signal. - -@deftypefun void rl_cleanup_after_signal (void) -This function will reset the state of the terminal to what it was before -@code{readline()} was called, and remove the Readline signal handlers for -all signals, depending on the values of @code{rl_catch_signals} and -@code{rl_catch_sigwinch}. -@end deftypefun - -@deftypefun void rl_free_line_state (void) -This will free any partial state associated with the current input line -(undo information, any partial history entry, any partially-entered -keyboard macro, and any partially-entered numeric argument). This -should be called before @code{rl_cleanup_after_signal()}. The -Readline signal handler for @code{SIGINT} calls this to abort the -current input line. -@end deftypefun - -@deftypefun void rl_reset_after_signal (void) -This will reinitialize the terminal and reinstall any Readline signal -handlers, depending on the values of @code{rl_catch_signals} and -@code{rl_catch_sigwinch}. -@end deftypefun - -If an application does not wish Readline to catch @code{SIGWINCH}, it may -call @code{rl_resize_terminal()} or @code{rl_set_screen_size()} to force -Readline to update its idea of the terminal size when a @code{SIGWINCH} -is received. - -@deftypefun void rl_echo_signal_char (int sig) -If an application wishes to install its own signal handlers, but still -have readline display characters that generate signals, calling this -function with @var{sig} set to @code{SIGINT}, @code{SIGQUIT}, or -@code{SIGTSTP} will display the character generating that signal. -@end deftypefun - -@deftypefun void rl_resize_terminal (void) -Update Readline's internal screen size by reading values from the kernel. -@end deftypefun - -@deftypefun void rl_set_screen_size (int rows, int cols) -Set Readline's idea of the terminal size to @var{rows} rows and -@var{cols} columns. If either @var{rows} or @var{columns} is less than -or equal to 0, Readline's idea of that terminal dimension is unchanged. -@end deftypefun - -If an application does not want to install a @code{SIGWINCH} handler, but -is still interested in the screen dimensions, Readline's idea of the screen -size may be queried. - -@deftypefun void rl_get_screen_size (int *rows, int *cols) -Return Readline's idea of the terminal's size in the -variables pointed to by the arguments. -@end deftypefun - -@deftypefun void rl_reset_screen_size (void) -Cause Readline to reobtain the screen size and recalculate its dimensions. -@end deftypefun - -The following functions install and remove Readline's signal handlers. - -@deftypefun int rl_set_signals (void) -Install Readline's signal handler for @code{SIGINT}, @code{SIGQUIT}, -@code{SIGTERM}, @code{SIGHUP}, @code{SIGALRM}, @code{SIGTSTP}, @code{SIGTTIN}, -@code{SIGTTOU}, and @code{SIGWINCH}, depending on the values of -@code{rl_catch_signals} and @code{rl_catch_sigwinch}. -@end deftypefun - -@deftypefun int rl_clear_signals (void) -Remove all of the Readline signal handlers installed by -@code{rl_set_signals()}. -@end deftypefun - -@node Custom Completers -@section Custom Completers -@cindex application-specific completion functions - -Typically, a program that reads commands from the user has a way of -disambiguating commands and data. If your program is one of these, then -it can provide completion for commands, data, or both. -The following sections describe how your program and Readline -cooperate to provide this service. - -@menu -* How Completing Works:: The logic used to do completion. -* Completion Functions:: Functions provided by Readline. -* Completion Variables:: Variables which control completion. -* A Short Completion Example:: An example of writing completer subroutines. -@end menu - -@node How Completing Works -@subsection How Completing Works - -In order to complete some text, the full list of possible completions -must be available. That is, it is not possible to accurately -expand a partial word without knowing all of the possible words -which make sense in that context. The Readline library provides -the user interface to completion, and two of the most common -completion functions: filename and username. For completing other types -of text, you must write your own completion function. This section -describes exactly what such functions must do, and provides an example. - -There are three major functions used to perform completion: - -@enumerate -@item -The user-interface function @code{rl_complete()}. This function is -called with the same arguments as other bindable Readline functions: -@var{count} and @var{invoking_key}. -It isolates the word to be completed and calls -@code{rl_completion_matches()} to generate a list of possible completions. -It then either lists the possible completions, inserts the possible -completions, or actually performs the -completion, depending on which behavior is desired. - -@item -The internal function @code{rl_completion_matches()} uses an -application-supplied @dfn{generator} function to generate the list of -possible matches, and then returns the array of these matches. -The caller should place the address of its generator function in -@code{rl_completion_entry_function}. - -@item -The generator function is called repeatedly from -@code{rl_completion_matches()}, returning a string each time. The -arguments to the generator function are @var{text} and @var{state}. -@var{text} is the partial word to be completed. @var{state} is zero the -first time the function is called, allowing the generator to perform -any necessary initialization, and a positive non-zero integer for -each subsequent call. The generator function returns -@code{(char *)NULL} to inform @code{rl_completion_matches()} that there are -no more possibilities left. Usually the generator function computes the -list of possible completions when @var{state} is zero, and returns them -one at a time on subsequent calls. Each string the generator function -returns as a match must be allocated with @code{malloc()}; Readline -frees the strings when it has finished with them. -Such a generator function is referred to as an -@dfn{application-specific completion function}. - -@end enumerate - -@deftypefun int rl_complete (int ignore, int invoking_key) -Complete the word at or before point. You have supplied the function -that does the initial simple matching selection algorithm (see -@code{rl_completion_matches()}). The default is to do filename completion. -@end deftypefun - -@deftypevar {rl_compentry_func_t *} rl_completion_entry_function -This is a pointer to the generator function for -@code{rl_completion_matches()}. -If the value of @code{rl_completion_entry_function} is -@code{NULL} then the default filename generator -function, @code{rl_filename_completion_function()}, is used. -An @dfn{application-specific completion function} is a function whose -address is assigned to @code{rl_completion_entry_function} and whose -return values are used to generate possible completions. -@end deftypevar - -@node Completion Functions -@subsection Completion Functions - -Here is the complete list of callable completion functions present in -Readline. - -@deftypefun int rl_complete_internal (int what_to_do) -Complete the word at or before point. @var{what_to_do} says what to do -with the completion. A value of @samp{?} means list the possible -completions. @samp{TAB} means do standard completion. @samp{*} means -insert all of the possible completions. @samp{!} means to display -all of the possible completions, if there is more than one, as well as -performing partial completion. @samp{@@} is similar to @samp{!}, but -possible completions are not listed if the possible completions share -a common prefix. -@end deftypefun - -@deftypefun int rl_complete (int ignore, int invoking_key) -Complete the word at or before point. You have supplied the function -that does the initial simple matching selection algorithm (see -@code{rl_completion_matches()} and @code{rl_completion_entry_function}). -The default is to do filename -completion. This calls @code{rl_complete_internal()} with an -argument depending on @var{invoking_key}. -@end deftypefun - -@deftypefun int rl_possible_completions (int count, int invoking_key) -List the possible completions. See description of @code{rl_complete -()}. This calls @code{rl_complete_internal()} with an argument of -@samp{?}. -@end deftypefun - -@deftypefun int rl_insert_completions (int count, int invoking_key) -Insert the list of possible completions into the line, deleting the -partially-completed word. See description of @code{rl_complete()}. -This calls @code{rl_complete_internal()} with an argument of @samp{*}. -@end deftypefun - -@deftypefun int rl_completion_mode (rl_command_func_t *cfunc) -Returns the apppriate value to pass to @code{rl_complete_internal()} -depending on whether @var{cfunc} was called twice in succession and -the values of the @code{show-all-if-ambiguous} and -@code{show-all-if-unmodified} variables. -Application-specific completion functions may use this function to present -the same interface as @code{rl_complete()}. -@end deftypefun - -@deftypefun {char **} rl_completion_matches (const char *text, rl_compentry_func_t *entry_func) -Returns an array of strings which is a list of completions for -@var{text}. If there are no completions, returns @code{NULL}. -The first entry in the returned array is the substitution for @var{text}. -The remaining entries are the possible completions. The array is -terminated with a @code{NULL} pointer. - -@var{entry_func} is a function of two args, and returns a -@code{char *}. The first argument is @var{text}. The second is a -state argument; it is zero on the first call, and non-zero on subsequent -calls. @var{entry_func} returns a @code{NULL} pointer to the caller -when there are no more matches. -@end deftypefun - -@deftypefun {char *} rl_filename_completion_function (const char *text, int state) -A generator function for filename completion in the general case. -@var{text} is a partial filename. -The Bash source is a useful reference for writing application-specific -completion functions (the Bash completion functions call this and other -Readline functions). -@end deftypefun - -@deftypefun {char *} rl_username_completion_function (const char *text, int state) -A completion generator for usernames. @var{text} contains a partial -username preceded by a random character (usually @samp{~}). As with all -completion generators, @var{state} is zero on the first call and non-zero -for subsequent calls. -@end deftypefun - -@node Completion Variables -@subsection Completion Variables - -@deftypevar {rl_compentry_func_t *} rl_completion_entry_function -A pointer to the generator function for @code{rl_completion_matches()}. -@code{NULL} means to use @code{rl_filename_completion_function()}, -the default filename completer. -@end deftypevar - -@deftypevar {rl_completion_func_t *} rl_attempted_completion_function -A pointer to an alternative function to create matches. -The function is called with @var{text}, @var{start}, and @var{end}. -@var{start} and @var{end} are indices in @code{rl_line_buffer} defining -the boundaries of @var{text}, which is a character string. -If this function exists and returns @code{NULL}, or if this variable is -set to @code{NULL}, then @code{rl_complete()} will call the value of -@code{rl_completion_entry_function} to generate matches, otherwise the -array of strings returned will be used. -If this function sets the @code{rl_attempted_completion_over} -variable to a non-zero value, Readline will not perform its default -completion even if this function returns no matches. -@end deftypevar - -@deftypevar {rl_quote_func_t *} rl_filename_quoting_function -A pointer to a function that will quote a filename in an -application-specific fashion. This is called if filename completion is being -attempted and one of the characters in @code{rl_filename_quote_characters} -appears in a completed filename. The function is called with -@var{text}, @var{match_type}, and @var{quote_pointer}. The @var{text} -is the filename to be quoted. The @var{match_type} is either -@code{SINGLE_MATCH}, if there is only one completion match, or -@code{MULT_MATCH}. Some functions use this to decide whether or not to -insert a closing quote character. The @var{quote_pointer} is a pointer -to any opening quote character the user typed. Some functions choose -to reset this character. -@end deftypevar - -@deftypevar {rl_dequote_func_t *} rl_filename_dequoting_function -A pointer to a function that will remove application-specific quoting -characters from a filename before completion is attempted, so those -characters do not interfere with matching the text against names in -the filesystem. It is called with @var{text}, the text of the word -to be dequoted, and @var{quote_char}, which is the quoting character -that delimits the filename (usually @samp{'} or @samp{"}). If -@var{quote_char} is zero, the filename was not in an embedded string. -@end deftypevar - -@deftypevar {rl_linebuf_func_t *} rl_char_is_quoted_p -A pointer to a function to call that determines whether or not a specific -character in the line buffer is quoted, according to whatever quoting -mechanism the program calling Readline uses. The function is called with -two arguments: @var{text}, the text of the line, and @var{index}, the -index of the character in the line. It is used to decide whether a -character found in @code{rl_completer_word_break_characters} should be -used to break words for the completer. -@end deftypevar - -@deftypevar {rl_compignore_func_t *} rl_ignore_some_completions_function -This function, if defined, is called by the completer when real filename -completion is done, after all the matching names have been generated. -It is passed a @code{NULL} terminated array of matches. -The first element (@code{matches[0]}) is the -maximal substring common to all matches. This function can -re-arrange the list of matches as required, but each element deleted -from the array must be freed. -@end deftypevar - -@deftypevar {rl_icppfunc_t *} rl_directory_completion_hook -This function, if defined, is allowed to modify the directory portion -of filenames Readline completes. -It could be used to expand symbolic links or shell variables in pathnames. -It is called with the address of a string (the current directory name) as an -argument, and may modify that string. -If the string is replaced with a new string, the old value should be freed. -Any modified directory name should have a trailing slash. -The modified value will be used as part of the completion, replacing -the directory portion of the pathname the user typed. -At the least, even if no other expansion is performed, this function should -remove any quote characters from the directory name, because its result will -be passed directly to @code{opendir()}. - -The directory completion hook returns an integer that should be non-zero if -the function modifies its directory argument. -The function should not modify the directory argument if it returns 0. -@end deftypevar - -@deftypevar {rl_icppfunc_t *} rl_directory_rewrite_hook; -If non-zero, this is the address of a function to call when completing -a directory name. This function takes the address of the directory name -to be modified as an argument. Unlike @code{rl_directory_completion_hook}, -it only modifies the directory name used in @code{opendir}, not what is -displayed when the possible completions are printed or inserted. It is -called before rl_directory_completion_hook. -At the least, even if no other expansion is performed, this function should -remove any quote characters from the directory name, because its result will -be passed directly to @code{opendir()}. - -The directory rewrite hook returns an integer that should be non-zero if -the function modfies its directory argument. -The function should not modify the directory argument if it returns 0. -@end deftypevar - -@deftypevar {rl_icppfunc_t *} rl_filename_stat_hook -If non-zero, this is the address of a function for the completer to -call before deciding which character to append to a completed name. -This function modifies its filename name argument, and the modified value -is passed to @code{stat()} to determine the file's type and characteristics. -This function does not need to remove quote characters from the filename. - -The stat hook returns an integer that should be non-zero if -the function modfies its directory argument. -The function should not modify the directory argument if it returns 0. -@end deftypevar - -@deftypevar {rl_dequote_func_t *} rl_filename_rewrite_hook -If non-zero, this is the address of a function called when reading -directory entries from the filesystem for completion and comparing -them to the partial word to be completed. The function should -perform any necesary application or system-specific conversion on -the filename, such as converting between character sets or converting -from a filesystem format to a character input format. -The function takes two arguments: @var{fname}, the filename to be converted, -and @var{fnlen}, its length in bytes. -It must either return its first argument (if no conversion takes place) -or the converted filename in newly-allocated memory. The converted -form is used to compare against the word to be completed, and, if it -matches, is added to the list of matches. Readline will free the -allocated string. -@end deftypevar - -@deftypevar {rl_compdisp_func_t *} rl_completion_display_matches_hook -If non-zero, then this is the address of a function to call when -completing a word would normally display the list of possible matches. -This function is called in lieu of Readline displaying the list. -It takes three arguments: -(@code{char **}@var{matches}, @code{int} @var{num_matches}, @code{int} @var{max_length}) -where @var{matches} is the array of matching strings, -@var{num_matches} is the number of strings in that array, and -@var{max_length} is the length of the longest string in that array. -Readline provides a convenience function, @code{rl_display_match_list}, -that takes care of doing the display to Readline's output stream. That -function may be called from this hook. -@end deftypevar - -@deftypevar {const char *} rl_basic_word_break_characters -The basic list of characters that signal a break between words for the -completer routine. The default value of this variable is the characters -which break words for completion in Bash: -@code{" \t\n\"\\'`@@$><=;|&@{("}. -@end deftypevar - -@deftypevar {const char *} rl_basic_quote_characters -A list of quote characters which can cause a word break. -@end deftypevar - -@deftypevar {const char *} rl_completer_word_break_characters -The list of characters that signal a break between words for -@code{rl_complete_internal()}. The default list is the value of -@code{rl_basic_word_break_characters}. -@end deftypevar - -@deftypevar {rl_cpvfunc_t *} rl_completion_word_break_hook -If non-zero, this is the address of a function to call when Readline is -deciding where to separate words for word completion. It should return -a character string like @code{rl_completer_word_break_characters} to be -used to perform the current completion. The function may choose to set -@code{rl_completer_word_break_characters} itself. If the function -returns @code{NULL}, @code{rl_completer_word_break_characters} is used. -@end deftypevar - -@deftypevar {const char *} rl_completer_quote_characters -A list of characters which can be used to quote a substring of the line. -Completion occurs on the entire substring, and within the substring -@code{rl_completer_word_break_characters} are treated as any other character, -unless they also appear within this list. -@end deftypevar - -@deftypevar {const char *} rl_filename_quote_characters -A list of characters that cause a filename to be quoted by the completer -when they appear in a completed filename. The default is the null string. -@end deftypevar - -@deftypevar {const char *} rl_special_prefixes -The list of characters that are word break characters, but should be -left in @var{text} when it is passed to the completion function. -Programs can use this to help determine what kind of completing to do. -For instance, Bash sets this variable to "$@@" so that it can complete -shell variables and hostnames. -@end deftypevar - -@deftypevar int rl_completion_query_items -Up to this many items will be displayed in response to a -possible-completions call. After that, readline asks the user if she is sure -she wants to see them all. The default value is 100. A negative value -indicates that Readline should never ask the user. -@end deftypevar - -@deftypevar {int} rl_completion_append_character -When a single completion alternative matches at the end of the command -line, this character is appended to the inserted completion text. The -default is a space character (@samp{ }). Setting this to the null -character (@samp{\0}) prevents anything being appended automatically. -This can be changed in application-specific completion functions to -provide the ``most sensible word separator character'' according to -an application-specific command line syntax specification. -@end deftypevar - -@deftypevar int rl_completion_suppress_append -If non-zero, @var{rl_completion_append_character} is not appended to -matches at the end of the command line, as described above. -It is set to 0 before any application-specific completion function -is called, and may only be changed within such a function. -@end deftypevar - -@deftypevar int rl_completion_quote_character -When Readline is completing quoted text, as delimited by one of the -characters in @var{rl_completer_quote_characters}, it sets this variable -to the quoting character found. -This is set before any application-specific completion function is called. -@end deftypevar - -@deftypevar int rl_completion_suppress_quote -If non-zero, Readline does not append a matching quote character when -performing completion on a quoted string. -It is set to 0 before any application-specific completion function -is called, and may only be changed within such a function. -@end deftypevar - -@deftypevar int rl_completion_found_quote -When Readline is completing quoted text, it sets this variable -to a non-zero value if the word being completed contains or is delimited -by any quoting characters, including backslashes. -This is set before any application-specific completion function is called. -@end deftypevar - -@deftypevar int rl_completion_mark_symlink_dirs -If non-zero, a slash will be appended to completed filenames that are -symbolic links to directory names, subject to the value of the -user-settable @var{mark-directories} variable. -This variable exists so that application-specific completion functions -can override the user's global preference (set via the -@var{mark-symlinked-directories} Readline variable) if appropriate. -This variable is set to the user's preference before any -application-specific completion function is called, so unless that -function modifies the value, the user's preferences are honored. -@end deftypevar - -@deftypevar int rl_ignore_completion_duplicates -If non-zero, then duplicates in the matches are removed. -The default is 1. -@end deftypevar - -@deftypevar int rl_filename_completion_desired -Non-zero means that the results of the matches are to be treated as -filenames. This is @emph{always} zero when completion is attempted, -and can only be changed -within an application-specific completion function. If it is set to a -non-zero value by such a function, directory names have a slash appended -and Readline attempts to quote completed filenames if they contain any -characters in @code{rl_filename_quote_characters} and -@code{rl_filename_quoting_desired} is set to a non-zero value. -@end deftypevar - -@deftypevar int rl_filename_quoting_desired -Non-zero means that the results of the matches are to be quoted using -double quotes (or an application-specific quoting mechanism) if the -completed filename contains any characters in -@code{rl_filename_quote_chars}. This is @emph{always} non-zero -when completion is attempted, and can only be changed within an -application-specific completion function. -The quoting is effected via a call to the function pointed to -by @code{rl_filename_quoting_function}. -@end deftypevar - -@deftypevar int rl_attempted_completion_over -If an application-specific completion function assigned to -@code{rl_attempted_completion_function} sets this variable to a non-zero -value, Readline will not perform its default filename completion even -if the application's completion function returns no matches. -It should be set only by an application's completion function. -@end deftypevar - -@deftypevar int rl_sort_completion_matches -If an application sets this variable to 0, Readline will not sort the -list of completions (which implies that it cannot remove any duplicate -completions). The default value is 1, which means that Readline will -sort the completions and, depending on the value of -@code{rl_ignore_completion_duplicates}, will attempt to remove duplicate -matches. -@end deftypevar - -@deftypevar int rl_completion_type -Set to a character describing the type of completion Readline is currently -attempting; see the description of @code{rl_complete_internal()} -(@pxref{Completion Functions}) for the list of characters. -This is set to the appropriate value before any application-specific -completion function is called, allowing such functions to present -the same interface as @code{rl_complete()}. -@end deftypevar - -@deftypevar int rl_completion_invoking_key -Set to the final character in the key sequence that invoked one of the -completion functions that call @code{rl_complete_internal()}. This is -set to the appropriate value before any application-specific completion -function is called. -@end deftypevar - -@deftypevar int rl_inhibit_completion -If this variable is non-zero, completion is inhibited. The completion -character will be inserted as any other bound to @code{self-insert}. -@end deftypevar - -@node A Short Completion Example -@subsection A Short Completion Example - -Here is a small application demonstrating the use of the GNU Readline -library. It is called @code{fileman}, and the source code resides in -@file{examples/fileman.c}. This sample application provides -completion of command names, line editing features, and access to the -history list. - -@page -@smallexample -/* fileman.c -- A tiny application which demonstrates how to use the - GNU Readline library. This application interactively allows users - to manipulate files and their modes. */ - -#ifdef HAVE_CONFIG_H -# include -#endif - -#include -#ifdef HAVE_SYS_FILE_H -# include -#endif -#include - -#ifdef HAVE_UNISTD_H -# include -#endif - -#include -#include -#include - -#if defined (HAVE_STRING_H) -# include -#else /* !HAVE_STRING_H */ -# include -#endif /* !HAVE_STRING_H */ - -#ifdef HAVE_STDLIB_H -# include -#endif - -#include - -#include -#include - -extern char *xmalloc PARAMS((size_t)); - -/* The names of functions that actually do the manipulation. */ -int com_list PARAMS((char *)); -int com_view PARAMS((char *)); -int com_rename PARAMS((char *)); -int com_stat PARAMS((char *)); -int com_pwd PARAMS((char *)); -int com_delete PARAMS((char *)); -int com_help PARAMS((char *)); -int com_cd PARAMS((char *)); -int com_quit PARAMS((char *)); - -/* A structure which contains information on the commands this program - can understand. */ - -typedef struct @{ - char *name; /* User printable name of the function. */ - rl_icpfunc_t *func; /* Function to call to do the job. */ - char *doc; /* Documentation for this function. */ -@} COMMAND; - -COMMAND commands[] = @{ - @{ "cd", com_cd, "Change to directory DIR" @}, - @{ "delete", com_delete, "Delete FILE" @}, - @{ "help", com_help, "Display this text" @}, - @{ "?", com_help, "Synonym for `help'" @}, - @{ "list", com_list, "List files in DIR" @}, - @{ "ls", com_list, "Synonym for `list'" @}, - @{ "pwd", com_pwd, "Print the current working directory" @}, - @{ "quit", com_quit, "Quit using Fileman" @}, - @{ "rename", com_rename, "Rename FILE to NEWNAME" @}, - @{ "stat", com_stat, "Print out statistics on FILE" @}, - @{ "view", com_view, "View the contents of FILE" @}, - @{ (char *)NULL, (rl_icpfunc_t *)NULL, (char *)NULL @} -@}; - -/* Forward declarations. */ -char *stripwhite (); -COMMAND *find_command (); - -/* The name of this program, as taken from argv[0]. */ -char *progname; - -/* When non-zero, this global means the user is done using this program. */ -int done; - -char * -dupstr (s) - char *s; -@{ - char *r; - - r = xmalloc (strlen (s) + 1); - strcpy (r, s); - return (r); -@} - -main (argc, argv) - int argc; - char **argv; -@{ - char *line, *s; - - progname = argv[0]; - - initialize_readline (); /* Bind our completer. */ - - /* Loop reading and executing lines until the user quits. */ - for ( ; done == 0; ) - @{ - line = readline ("FileMan: "); - - if (!line) - break; - - /* Remove leading and trailing whitespace from the line. - Then, if there is anything left, add it to the history list - and execute it. */ - s = stripwhite (line); - - if (*s) - @{ - add_history (s); - execute_line (s); - @} - - free (line); - @} - exit (0); -@} - -/* Execute a command line. */ -int -execute_line (line) - char *line; -@{ - register int i; - COMMAND *command; - char *word; - - /* Isolate the command word. */ - i = 0; - while (line[i] && whitespace (line[i])) - i++; - word = line + i; - - while (line[i] && !whitespace (line[i])) - i++; - - if (line[i]) - line[i++] = '\0'; - - command = find_command (word); - - if (!command) - @{ - fprintf (stderr, "%s: No such command for FileMan.\n", word); - return (-1); - @} - - /* Get argument to command, if any. */ - while (whitespace (line[i])) - i++; - - word = line + i; - - /* Call the function. */ - return ((*(command->func)) (word)); -@} - -/* Look up NAME as the name of a command, and return a pointer to that - command. Return a NULL pointer if NAME isn't a command name. */ -COMMAND * -find_command (name) - char *name; -@{ - register int i; - - for (i = 0; commands[i].name; i++) - if (strcmp (name, commands[i].name) == 0) - return (&commands[i]); - - return ((COMMAND *)NULL); -@} - -/* Strip whitespace from the start and end of STRING. Return a pointer - into STRING. */ -char * -stripwhite (string) - char *string; -@{ - register char *s, *t; - - for (s = string; whitespace (*s); s++) - ; - - if (*s == 0) - return (s); - - t = s + strlen (s) - 1; - while (t > s && whitespace (*t)) - t--; - *++t = '\0'; - - return s; -@} - -/* **************************************************************** */ -/* */ -/* Interface to Readline Completion */ -/* */ -/* **************************************************************** */ - -char *command_generator PARAMS((const char *, int)); -char **fileman_completion PARAMS((const char *, int, int)); - -/* Tell the GNU Readline library how to complete. We want to try to complete - on command names if this is the first word in the line, or on filenames - if not. */ -initialize_readline () -@{ - /* Allow conditional parsing of the ~/.inputrc file. */ - rl_readline_name = "FileMan"; - - /* Tell the completer that we want a crack first. */ - rl_attempted_completion_function = fileman_completion; -@} - -/* Attempt to complete on the contents of TEXT. START and END bound the - region of rl_line_buffer that contains the word to complete. TEXT is - the word to complete. We can use the entire contents of rl_line_buffer - in case we want to do some simple parsing. Return the array of matches, - or NULL if there aren't any. */ -char ** -fileman_completion (text, start, end) - const char *text; - int start, end; -@{ - char **matches; - - matches = (char **)NULL; - - /* If this word is at the start of the line, then it is a command - to complete. Otherwise it is the name of a file in the current - directory. */ - if (start == 0) - matches = rl_completion_matches (text, command_generator); - - return (matches); -@} - -/* Generator function for command completion. STATE lets us know whether - to start from scratch; without any state (i.e. STATE == 0), then we - start at the top of the list. */ -char * -command_generator (text, state) - const char *text; - int state; -@{ - static int list_index, len; - char *name; - - /* If this is a new word to complete, initialize now. This includes - saving the length of TEXT for efficiency, and initializing the index - variable to 0. */ - if (!state) - @{ - list_index = 0; - len = strlen (text); - @} - - /* Return the next name which partially matches from the command list. */ - while (name = commands[list_index].name) - @{ - list_index++; - - if (strncmp (name, text, len) == 0) - return (dupstr(name)); - @} - - /* If no names matched, then return NULL. */ - return ((char *)NULL); -@} - -/* **************************************************************** */ -/* */ -/* FileMan Commands */ -/* */ -/* **************************************************************** */ - -/* String to pass to system (). This is for the LIST, VIEW and RENAME - commands. */ -static char syscom[1024]; - -/* List the file(s) named in arg. */ -com_list (arg) - char *arg; -@{ - if (!arg) - arg = ""; - - sprintf (syscom, "ls -FClg %s", arg); - return (system (syscom)); -@} - -com_view (arg) - char *arg; -@{ - if (!valid_argument ("view", arg)) - return 1; - -#if defined (__MSDOS__) - /* more.com doesn't grok slashes in pathnames */ - sprintf (syscom, "less %s", arg); -#else - sprintf (syscom, "more %s", arg); -#endif - return (system (syscom)); -@} - -com_rename (arg) - char *arg; -@{ - too_dangerous ("rename"); - return (1); -@} - -com_stat (arg) - char *arg; -@{ - struct stat finfo; - - if (!valid_argument ("stat", arg)) - return (1); - - if (stat (arg, &finfo) == -1) - @{ - perror (arg); - return (1); - @} - - printf ("Statistics for `%s':\n", arg); - - printf ("%s has %d link%s, and is %d byte%s in length.\n", - arg, - finfo.st_nlink, - (finfo.st_nlink == 1) ? "" : "s", - finfo.st_size, - (finfo.st_size == 1) ? "" : "s"); - printf ("Inode Last Change at: %s", ctime (&finfo.st_ctime)); - printf (" Last access at: %s", ctime (&finfo.st_atime)); - printf (" Last modified at: %s", ctime (&finfo.st_mtime)); - return (0); -@} - -com_delete (arg) - char *arg; -@{ - too_dangerous ("delete"); - return (1); -@} - -/* Print out help for ARG, or for all of the commands if ARG is - not present. */ -com_help (arg) - char *arg; -@{ - register int i; - int printed = 0; - - for (i = 0; commands[i].name; i++) - @{ - if (!*arg || (strcmp (arg, commands[i].name) == 0)) - @{ - printf ("%s\t\t%s.\n", commands[i].name, commands[i].doc); - printed++; - @} - @} - - if (!printed) - @{ - printf ("No commands match `%s'. Possibilties are:\n", arg); - - for (i = 0; commands[i].name; i++) - @{ - /* Print in six columns. */ - if (printed == 6) - @{ - printed = 0; - printf ("\n"); - @} - - printf ("%s\t", commands[i].name); - printed++; - @} - - if (printed) - printf ("\n"); - @} - return (0); -@} - -/* Change to the directory ARG. */ -com_cd (arg) - char *arg; -@{ - if (chdir (arg) == -1) - @{ - perror (arg); - return 1; - @} - - com_pwd (""); - return (0); -@} - -/* Print out the current working directory. */ -com_pwd (ignore) - char *ignore; -@{ - char dir[1024], *s; - - s = getcwd (dir, sizeof(dir) - 1); - if (s == 0) - @{ - printf ("Error getting pwd: %s\n", dir); - return 1; - @} - - printf ("Current directory is %s\n", dir); - return 0; -@} - -/* The user wishes to quit using this program. Just set DONE non-zero. */ -com_quit (arg) - char *arg; -@{ - done = 1; - return (0); -@} - -/* Function which tells you that you can't do this. */ -too_dangerous (caller) - char *caller; -@{ - fprintf (stderr, - "%s: Too dangerous for me to distribute. Write it yourself.\n", - caller); -@} - -/* Return non-zero if ARG is a valid argument for CALLER, else print - an error message and return zero. */ -int -valid_argument (caller, arg) - char *caller, *arg; -@{ - if (!arg || !*arg) - @{ - fprintf (stderr, "%s: Argument required.\n", caller); - return (0); - @} - - return (1); -@} -@end smallexample diff --git a/lib/readline/doc/rluser.texi~ b/lib/readline/doc/rluser.texi~ deleted file mode 100644 index e4b28699e..000000000 --- a/lib/readline/doc/rluser.texi~ +++ /dev/null @@ -1,2196 +0,0 @@ -@comment %**start of header (This is for running Texinfo on a region.) -@setfilename rluser.info -@comment %**end of header (This is for running Texinfo on a region.) - -@ignore -This file documents the end user interface to the GNU command line -editing features. It is to be an appendix to manuals for programs which -use these features. There is a document entitled "readline.texinfo" -which contains both end-user and programmer documentation for the -GNU Readline Library. - -Copyright (C) 1988--2011 Free Software Foundation, Inc. - -Authored by Brian Fox and Chet Ramey. - -Permission is granted to process this file through Tex and print the -results, provided the printed document carries copying permission notice -identical to this one except for the removal of this paragraph (this -paragraph not being relevant to the printed manual). - -Permission is granted to make and distribute verbatim copies of this manual -provided the copyright notice and this permission notice are preserved on -all copies. - -Permission is granted to copy and distribute modified versions of this -manual under the conditions for verbatim copying, provided also that the -GNU Copyright statement is available to the distributee, and provided that -the entire resulting derived work is distributed under the terms of a -permission notice identical to this one. - -Permission is granted to copy and distribute translations of this manual -into another language, under the above conditions for modified versions. -@end ignore - -@comment If you are including this manual as an appendix, then set the -@comment variable readline-appendix. - -@ifclear BashFeatures -@defcodeindex bt -@end ifclear - -@node Command Line Editing -@chapter Command Line Editing - -This chapter describes the basic features of the @sc{gnu} -command line editing interface. -@ifset BashFeatures -Command line editing is provided by the Readline library, which is -used by several different programs, including Bash. -Command line editing is enabled by default when using an interactive shell, -unless the @option{--noediting} option is supplied at shell invocation. -Line editing is also used when using the @option{-e} option to the -@code{read} builtin command (@pxref{Bash Builtins}). -By default, the line editing commands are similar to those of Emacs. -A vi-style line editing interface is also available. -Line editing can be enabled at any time using the @option{-o emacs} or -@option{-o vi} options to the @code{set} builtin command -(@pxref{The Set Builtin}), or disabled using the @option{+o emacs} or -@option{+o vi} options to @code{set}. -@end ifset - -@menu -* Introduction and Notation:: Notation used in this text. -* Readline Interaction:: The minimum set of commands for editing a line. -* Readline Init File:: Customizing Readline from a user's view. -* Bindable Readline Commands:: A description of most of the Readline commands - available for binding -* Readline vi Mode:: A short description of how to make Readline - behave like the vi editor. -@ifset BashFeatures -* Programmable Completion:: How to specify the possible completions for - a specific command. -* Programmable Completion Builtins:: Builtin commands to specify how to - complete arguments for a particular command. -* A Programmable Completion Example:: An example shell function for - generating possible completions. -@end ifset -@end menu - -@node Introduction and Notation -@section Introduction to Line Editing - -The following paragraphs describe the notation used to represent -keystrokes. - -The text @kbd{C-k} is read as `Control-K' and describes the character -produced when the @key{k} key is pressed while the Control key -is depressed. - -The text @kbd{M-k} is read as `Meta-K' and describes the character -produced when the Meta key (if you have one) is depressed, and the @key{k} -key is pressed. -The Meta key is labeled @key{ALT} on many keyboards. -On keyboards with two keys labeled @key{ALT} (usually to either side of -the space bar), the @key{ALT} on the left side is generally set to -work as a Meta key. -The @key{ALT} key on the right may also be configured to work as a -Meta key or may be configured as some other modifier, such as a -Compose key for typing accented characters. - -If you do not have a Meta or @key{ALT} key, or another key working as -a Meta key, the identical keystroke can be generated by typing @key{ESC} -@emph{first}, and then typing @key{k}. -Either process is known as @dfn{metafying} the @key{k} key. - -The text @kbd{M-C-k} is read as `Meta-Control-k' and describes the -character produced by @dfn{metafying} @kbd{C-k}. - -In addition, several keys have their own names. Specifically, -@key{DEL}, @key{ESC}, @key{LFD}, @key{SPC}, @key{RET}, and @key{TAB} all -stand for themselves when seen in this text, or in an init file -(@pxref{Readline Init File}). -If your keyboard lacks a @key{LFD} key, typing @key{C-j} will -produce the desired character. -The @key{RET} key may be labeled @key{Return} or @key{Enter} on -some keyboards. - -@node Readline Interaction -@section Readline Interaction -@cindex interaction, readline - -Often during an interactive session you type in a long line of text, -only to notice that the first word on the line is misspelled. The -Readline library gives you a set of commands for manipulating the text -as you type it in, allowing you to just fix your typo, and not forcing -you to retype the majority of the line. Using these editing commands, -you move the cursor to the place that needs correction, and delete or -insert the text of the corrections. Then, when you are satisfied with -the line, you simply press @key{RET}. You do not have to be at the -end of the line to press @key{RET}; the entire line is accepted -regardless of the location of the cursor within the line. - -@menu -* Readline Bare Essentials:: The least you need to know about Readline. -* Readline Movement Commands:: Moving about the input line. -* Readline Killing Commands:: How to delete text, and how to get it back! -* Readline Arguments:: Giving numeric arguments to commands. -* Searching:: Searching through previous lines. -@end menu - -@node Readline Bare Essentials -@subsection Readline Bare Essentials -@cindex notation, readline -@cindex command editing -@cindex editing command lines - -In order to enter characters into the line, simply type them. The typed -character appears where the cursor was, and then the cursor moves one -space to the right. If you mistype a character, you can use your -erase character to back up and delete the mistyped character. - -Sometimes you may mistype a character, and -not notice the error until you have typed several other characters. In -that case, you can type @kbd{C-b} to move the cursor to the left, and then -correct your mistake. Afterwards, you can move the cursor to the right -with @kbd{C-f}. - -When you add text in the middle of a line, you will notice that characters -to the right of the cursor are `pushed over' to make room for the text -that you have inserted. Likewise, when you delete text behind the cursor, -characters to the right of the cursor are `pulled back' to fill in the -blank space created by the removal of the text. A list of the bare -essentials for editing the text of an input line follows. - -@table @asis -@item @kbd{C-b} -Move back one character. -@item @kbd{C-f} -Move forward one character. -@item @key{DEL} or @key{Backspace} -Delete the character to the left of the cursor. -@item @kbd{C-d} -Delete the character underneath the cursor. -@item @w{Printing characters} -Insert the character into the line at the cursor. -@item @kbd{C-_} or @kbd{C-x C-u} -Undo the last editing command. You can undo all the way back to an -empty line. -@end table - -@noindent -(Depending on your configuration, the @key{Backspace} key be set to -delete the character to the left of the cursor and the @key{DEL} key set -to delete the character underneath the cursor, like @kbd{C-d}, rather -than the character to the left of the cursor.) - -@node Readline Movement Commands -@subsection Readline Movement Commands - - -The above table describes the most basic keystrokes that you need -in order to do editing of the input line. For your convenience, many -other commands have been added in addition to @kbd{C-b}, @kbd{C-f}, -@kbd{C-d}, and @key{DEL}. Here are some commands for moving more rapidly -about the line. - -@table @kbd -@item C-a -Move to the start of the line. -@item C-e -Move to the end of the line. -@item M-f -Move forward a word, where a word is composed of letters and digits. -@item M-b -Move backward a word. -@item C-l -Clear the screen, reprinting the current line at the top. -@end table - -Notice how @kbd{C-f} moves forward a character, while @kbd{M-f} moves -forward a word. It is a loose convention that control keystrokes -operate on characters while meta keystrokes operate on words. - -@node Readline Killing Commands -@subsection Readline Killing Commands - -@cindex killing text -@cindex yanking text - -@dfn{Killing} text means to delete the text from the line, but to save -it away for later use, usually by @dfn{yanking} (re-inserting) -it back into the line. -(`Cut' and `paste' are more recent jargon for `kill' and `yank'.) - -If the description for a command says that it `kills' text, then you can -be sure that you can get the text back in a different (or the same) -place later. - -When you use a kill command, the text is saved in a @dfn{kill-ring}. -Any number of consecutive kills save all of the killed text together, so -that when you yank it back, you get it all. The kill -ring is not line specific; the text that you killed on a previously -typed line is available to be yanked back later, when you are typing -another line. -@cindex kill ring - -Here is the list of commands for killing text. - -@table @kbd -@item C-k -Kill the text from the current cursor position to the end of the line. - -@item M-d -Kill from the cursor to the end of the current word, or, if between -words, to the end of the next word. -Word boundaries are the same as those used by @kbd{M-f}. - -@item M-@key{DEL} -Kill from the cursor the start of the current word, or, if between -words, to the start of the previous word. -Word boundaries are the same as those used by @kbd{M-b}. - -@item C-w -Kill from the cursor to the previous whitespace. This is different than -@kbd{M-@key{DEL}} because the word boundaries differ. - -@end table - -Here is how to @dfn{yank} the text back into the line. Yanking -means to copy the most-recently-killed text from the kill buffer. - -@table @kbd -@item C-y -Yank the most recently killed text back into the buffer at the cursor. - -@item M-y -Rotate the kill-ring, and yank the new top. You can only do this if -the prior command is @kbd{C-y} or @kbd{M-y}. -@end table - -@node Readline Arguments -@subsection Readline Arguments - -You can pass numeric arguments to Readline commands. Sometimes the -argument acts as a repeat count, other times it is the @i{sign} of the -argument that is significant. If you pass a negative argument to a -command which normally acts in a forward direction, that command will -act in a backward direction. For example, to kill text back to the -start of the line, you might type @samp{M-- C-k}. - -The general way to pass numeric arguments to a command is to type meta -digits before the command. If the first `digit' typed is a minus -sign (@samp{-}), then the sign of the argument will be negative. Once -you have typed one meta digit to get the argument started, you can type -the remainder of the digits, and then the command. For example, to give -the @kbd{C-d} command an argument of 10, you could type @samp{M-1 0 C-d}, -which will delete the next ten characters on the input line. - -@node Searching -@subsection Searching for Commands in the History - -Readline provides commands for searching through the command history -@ifset BashFeatures -(@pxref{Bash History Facilities}) -@end ifset -for lines containing a specified string. -There are two search modes: @dfn{incremental} and @dfn{non-incremental}. - -Incremental searches begin before the user has finished typing the -search string. -As each character of the search string is typed, Readline displays -the next entry from the history matching the string typed so far. -An incremental search requires only as many characters as needed to -find the desired history entry. -To search backward in the history for a particular string, type -@kbd{C-r}. Typing @kbd{C-s} searches forward through the history. -The characters present in the value of the @code{isearch-terminators} variable -are used to terminate an incremental search. -If that variable has not been assigned a value, the @key{ESC} and -@kbd{C-J} characters will terminate an incremental search. -@kbd{C-g} will abort an incremental search and restore the original line. -When the search is terminated, the history entry containing the -search string becomes the current line. - -To find other matching entries in the history list, type @kbd{C-r} or -@kbd{C-s} as appropriate. -This will search backward or forward in the history for the next -entry matching the search string typed so far. -Any other key sequence bound to a Readline command will terminate -the search and execute that command. -For instance, a @key{RET} will terminate the search and accept -the line, thereby executing the command from the history list. -A movement command will terminate the search, make the last line found -the current line, and begin editing. - -Readline remembers the last incremental search string. If two -@kbd{C-r}s are typed without any intervening characters defining a new -search string, any remembered search string is used. - -Non-incremental searches read the entire search string before starting -to search for matching history lines. The search string may be -typed by the user or be part of the contents of the current line. - -@node Readline Init File -@section Readline Init File -@cindex initialization file, readline - -Although the Readline library comes with a set of Emacs-like -keybindings installed by default, it is possible to use a different set -of keybindings. -Any user can customize programs that use Readline by putting -commands in an @dfn{inputrc} file, conventionally in his home directory. -The name of this -@ifset BashFeatures -file is taken from the value of the shell variable @env{INPUTRC}. If -@end ifset -@ifclear BashFeatures -file is taken from the value of the environment variable @env{INPUTRC}. If -@end ifclear -that variable is unset, the default is @file{~/.inputrc}. If that -file does not exist or cannot be read, the ultimate default is -@file{/etc/inputrc}. - -When a program which uses the Readline library starts up, the -init file is read, and the key bindings are set. - -In addition, the @code{C-x C-r} command re-reads this init file, thus -incorporating any changes that you might have made to it. - -@menu -* Readline Init File Syntax:: Syntax for the commands in the inputrc file. - -* Conditional Init Constructs:: Conditional key bindings in the inputrc file. - -* Sample Init File:: An example inputrc file. -@end menu - -@node Readline Init File Syntax -@subsection Readline Init File Syntax - -There are only a few basic constructs allowed in the -Readline init file. Blank lines are ignored. -Lines beginning with a @samp{#} are comments. -Lines beginning with a @samp{$} indicate conditional -constructs (@pxref{Conditional Init Constructs}). Other lines -denote variable settings and key bindings. - -@table @asis -@item Variable Settings -You can modify the run-time behavior of Readline by -altering the values of variables in Readline -using the @code{set} command within the init file. -The syntax is simple: - -@example -set @var{variable} @var{value} -@end example - -@noindent -Here, for example, is how to -change from the default Emacs-like key binding to use -@code{vi} line editing commands: - -@example -set editing-mode vi -@end example - -Variable names and values, where appropriate, are recognized without regard -to case. Unrecognized variable names are ignored. - -Boolean variables (those that can be set to on or off) are set to on if -the value is null or empty, @var{on} (case-insensitive), or 1. Any other -value results in the variable being set to off. - -@ifset BashFeatures -The @w{@code{bind -V}} command lists the current Readline variable names -and values. @xref{Bash Builtins}. -@end ifset - -A great deal of run-time behavior is changeable with the following -variables. - -@cindex variables, readline -@table @code - -@item bell-style -@vindex bell-style -Controls what happens when Readline wants to ring the terminal bell. -If set to @samp{none}, Readline never rings the bell. If set to -@samp{visible}, Readline uses a visible bell if one is available. -If set to @samp{audible} (the default), Readline attempts to ring -the terminal's bell. - -@item bind-tty-special-chars -@vindex bind-tty-special-chars -If set to @samp{on}, Readline attempts to bind the control characters -treated specially by the kernel's terminal driver to their Readline -equivalents. - -@item colored-stats -@vindex colored-stats -If set to @samp{on}, Readline displays possible completions using different -colors to indicate their file type. -The color definitions are taken from the value of the @env{LS_COLORS} -environment variable. -The default is @samp{off}. - -@item comment-begin -@vindex comment-begin -The string to insert at the beginning of the line when the -@code{insert-comment} command is executed. The default value -is @code{"#"}. - -@item completion-display-width -@vindex completion-display-width -The number of screen columns used to display possible matches -when performing completion. -The value is ignored if it is less than 0 or greater than the terminal -screen width. -A value of 0 will cause matches to be displayed one per line. -The default value is -1. - -@item completion-ignore-case -@vindex completion-ignore-case -If set to @samp{on}, Readline performs filename matching and completion -in a case-insensitive fashion. -The default value is @samp{off}. - -@item completion-map-case -@vindex completion-map-case -If set to @samp{on}, and @var{completion-ignore-case} is enabled, Readline -treats hyphens (@samp{-}) and underscores (@samp{_}) as equivalent when -performing case-insensitive filename matching and completion. - -@item completion-prefix-display-length -@vindex completion-prefix-display-length -The length in characters of the common prefix of a list of possible -completions that is displayed without modification. When set to a -value greater than zero, common prefixes longer than this value are -replaced with an ellipsis when displaying possible completions. - -@item completion-query-items -@vindex completion-query-items -The number of possible completions that determines when the user is -asked whether the list of possibilities should be displayed. -If the number of possible completions is greater than this value, -Readline will ask the user whether or not he wishes to view -them; otherwise, they are simply listed. -This variable must be set to an integer value greater than or equal to 0. -A negative value means Readline should never ask. -The default limit is @code{100}. - -@item convert-meta -@vindex convert-meta -If set to @samp{on}, Readline will convert characters with the -eighth bit set to an @sc{ascii} key sequence by stripping the eighth -bit and prefixing an @key{ESC} character, converting them to a -meta-prefixed key sequence. The default value is @samp{on}. - -@item disable-completion -@vindex disable-completion -If set to @samp{On}, Readline will inhibit word completion. -Completion characters will be inserted into the line as if they had -been mapped to @code{self-insert}. The default is @samp{off}. - -@item editing-mode -@vindex editing-mode -The @code{editing-mode} variable controls which default set of -key bindings is used. By default, Readline starts up in Emacs editing -mode, where the keystrokes are most similar to Emacs. This variable can be -set to either @samp{emacs} or @samp{vi}. - -@item echo-control-characters -When set to @samp{on}, on operating systems that indicate they support it, -readline echoes a character corresponding to a signal generated from the -keyboard. The default is @samp{on}. - -@item enable-keypad -@vindex enable-keypad -When set to @samp{on}, Readline will try to enable the application -keypad when it is called. Some systems need this to enable the -arrow keys. The default is @samp{off}. - -@item enable-meta-key -When set to @samp{on}, Readline will try to enable any meta modifier -key the terminal claims to support when it is called. On many terminals, -the meta key is used to send eight-bit characters. -The default is @samp{on}. - -@item expand-tilde -@vindex expand-tilde -If set to @samp{on}, tilde expansion is performed when Readline -attempts word completion. The default is @samp{off}. - -@item history-preserve-point -@vindex history-preserve-point -If set to @samp{on}, the history code attempts to place the point (the -current cursor position) at the -same location on each history line retrieved with @code{previous-history} -or @code{next-history}. The default is @samp{off}. - -@item history-size -@vindex history-size -Set the maximum number of history entries saved in the history list. If -set to zero, the number of entries in the history list is not limited. - -@item horizontal-scroll-mode -@vindex horizontal-scroll-mode -This variable can be set to either @samp{on} or @samp{off}. Setting it -to @samp{on} means that the text of the lines being edited will scroll -horizontally on a single screen line when they are longer than the width -of the screen, instead of wrapping onto a new screen line. By default, -this variable is set to @samp{off}. - -@item input-meta -@vindex input-meta -@vindex meta-flag -If set to @samp{on}, Readline will enable eight-bit input (it -will not clear the eighth bit in the characters it reads), -regardless of what the terminal claims it can support. The -default value is @samp{off}. The name @code{meta-flag} is a -synonym for this variable. - -@item isearch-terminators -@vindex isearch-terminators -The string of characters that should terminate an incremental search without -subsequently executing the character as a command (@pxref{Searching}). -If this variable has not been given a value, the characters @key{ESC} and -@kbd{C-J} will terminate an incremental search. - -@item keymap -@vindex keymap -Sets Readline's idea of the current keymap for key binding commands. -Acceptable @code{keymap} names are -@code{emacs}, -@code{emacs-standard}, -@code{emacs-meta}, -@code{emacs-ctlx}, -@code{vi}, -@code{vi-move}, -@code{vi-command}, and -@code{vi-insert}. -@code{vi} is equivalent to @code{vi-command}; @code{emacs} is -equivalent to @code{emacs-standard}. The default value is @code{emacs}. -The value of the @code{editing-mode} variable also affects the -default keymap. - -@item mark-directories -If set to @samp{on}, completed directory names have a slash -appended. The default is @samp{on}. - -@item mark-modified-lines -@vindex mark-modified-lines -This variable, when set to @samp{on}, causes Readline to display an -asterisk (@samp{*}) at the start of history lines which have been modified. -This variable is @samp{off} by default. - -@item mark-symlinked-directories -@vindex mark-symlinked-directories -If set to @samp{on}, completed names which are symbolic links -to directories have a slash appended (subject to the value of -@code{mark-directories}). -The default is @samp{off}. - -@item match-hidden-files -@vindex match-hidden-files -This variable, when set to @samp{on}, causes Readline to match files whose -names begin with a @samp{.} (hidden files) when performing filename -completion. -If set to @samp{off}, the leading @samp{.} must be -supplied by the user in the filename to be completed. -This variable is @samp{on} by default. - -@item menu-complete-display-prefix -@vindex menu-complete-display-prefix -If set to @samp{on}, menu completion displays the common prefix of the -list of possible completions (which may be empty) before cycling through -the list. The default is @samp{off}. - -@item output-meta -@vindex output-meta -If set to @samp{on}, Readline will display characters with the -eighth bit set directly rather than as a meta-prefixed escape -sequence. The default is @samp{off}. - -@item page-completions -@vindex page-completions -If set to @samp{on}, Readline uses an internal @code{more}-like pager -to display a screenful of possible completions at a time. -This variable is @samp{on} by default. - -@item print-completions-horizontally -If set to @samp{on}, Readline will display completions with matches -sorted horizontally in alphabetical order, rather than down the screen. -The default is @samp{off}. - -@item revert-all-at-newline -@vindex revert-all-at-newline -If set to @samp{on}, Readline will undo all changes to history lines -before returning when @code{accept-line} is executed. By default, -history lines may be modified and retain individual undo lists across -calls to @code{readline}. The default is @samp{off}. - -@item show-all-if-ambiguous -@vindex show-all-if-ambiguous -This alters the default behavior of the completion functions. If -set to @samp{on}, -words which have more than one possible completion cause the -matches to be listed immediately instead of ringing the bell. -The default value is @samp{off}. - -@item show-all-if-unmodified -@vindex show-all-if-unmodified -This alters the default behavior of the completion functions in -a fashion similar to @var{show-all-if-ambiguous}. -If set to @samp{on}, -words which have more than one possible completion without any -possible partial completion (the possible completions don't share -a common prefix) cause the matches to be listed immediately instead -of ringing the bell. -The default value is @samp{off}. - -@item skip-completed-text -@vindex skip-completed-text -If set to @samp{on}, this alters the default completion behavior when -inserting a single match into the line. It's only active when -performing completion in the middle of a word. If enabled, readline -does not insert characters from the completion that match characters -after point in the word being completed, so portions of the word -following the cursor are not duplicated. -For instance, if this is enabled, attempting completion when the cursor -is after the @samp{e} in @samp{Makefile} will result in @samp{Makefile} -rather than @samp{Makefilefile}, assuming there is a single possible -completion. -The default value is @samp{off}. - -@item visible-stats -@vindex visible-stats -If set to @samp{on}, a character denoting a file's type -is appended to the filename when listing possible -completions. The default is @samp{off}. - -@end table - -@item Key Bindings -The syntax for controlling key bindings in the init file is -simple. First you need to find the name of the command that you -want to change. The following sections contain tables of the command -name, the default keybinding, if any, and a short description of what -the command does. - -Once you know the name of the command, simply place on a line -in the init file the name of the key -you wish to bind the command to, a colon, and then the name of the -command. -There can be no space between the key name and the colon -- that will be -interpreted as part of the key name. -The name of the key can be expressed in different ways, depending on -what you find most comfortable. - -In addition to command names, readline allows keys to be bound -to a string that is inserted when the key is pressed (a @var{macro}). - -@ifset BashFeatures -The @w{@code{bind -p}} command displays Readline function names and -bindings in a format that can put directly into an initialization file. -@xref{Bash Builtins}. -@end ifset - -@table @asis -@item @w{@var{keyname}: @var{function-name} or @var{macro}} -@var{keyname} is the name of a key spelled out in English. For example: -@example -Control-u: universal-argument -Meta-Rubout: backward-kill-word -Control-o: "> output" -@end example - -In the above example, @kbd{C-u} is bound to the function -@code{universal-argument}, -@kbd{M-DEL} is bound to the function @code{backward-kill-word}, and -@kbd{C-o} is bound to run the macro -expressed on the right hand side (that is, to insert the text -@samp{> output} into the line). - -A number of symbolic character names are recognized while -processing this key binding syntax: -@var{DEL}, -@var{ESC}, -@var{ESCAPE}, -@var{LFD}, -@var{NEWLINE}, -@var{RET}, -@var{RETURN}, -@var{RUBOUT}, -@var{SPACE}, -@var{SPC}, -and -@var{TAB}. - -@item @w{"@var{keyseq}": @var{function-name} or @var{macro}} -@var{keyseq} differs from @var{keyname} above in that strings -denoting an entire key sequence can be specified, by placing -the key sequence in double quotes. Some @sc{gnu} Emacs style key -escapes can be used, as in the following example, but the -special character names are not recognized. - -@example -"\C-u": universal-argument -"\C-x\C-r": re-read-init-file -"\e[11~": "Function Key 1" -@end example - -In the above example, @kbd{C-u} is again bound to the function -@code{universal-argument} (just as it was in the first example), -@samp{@kbd{C-x} @kbd{C-r}} is bound to the function @code{re-read-init-file}, -and @samp{@key{ESC} @key{[} @key{1} @key{1} @key{~}} is bound to insert -the text @samp{Function Key 1}. - -@end table - -The following @sc{gnu} Emacs style escape sequences are available when -specifying key sequences: - -@table @code -@item @kbd{\C-} -control prefix -@item @kbd{\M-} -meta prefix -@item @kbd{\e} -an escape character -@item @kbd{\\} -backslash -@item @kbd{\"} -@key{"}, a double quotation mark -@item @kbd{\'} -@key{'}, a single quote or apostrophe -@end table - -In addition to the @sc{gnu} Emacs style escape sequences, a second -set of backslash escapes is available: - -@table @code -@item \a -alert (bell) -@item \b -backspace -@item \d -delete -@item \f -form feed -@item \n -newline -@item \r -carriage return -@item \t -horizontal tab -@item \v -vertical tab -@item \@var{nnn} -the eight-bit character whose value is the octal value @var{nnn} -(one to three digits) -@item \x@var{HH} -the eight-bit character whose value is the hexadecimal value @var{HH} -(one or two hex digits) -@end table - -When entering the text of a macro, single or double quotes must -be used to indicate a macro definition. -Unquoted text is assumed to be a function name. -In the macro body, the backslash escapes described above are expanded. -Backslash will quote any other character in the macro text, -including @samp{"} and @samp{'}. -For example, the following binding will make @samp{@kbd{C-x} \} -insert a single @samp{\} into the line: -@example -"\C-x\\": "\\" -@end example - -@end table - -@node Conditional Init Constructs -@subsection Conditional Init Constructs - -Readline implements a facility similar in spirit to the conditional -compilation features of the C preprocessor which allows key -bindings and variable settings to be performed as the result -of tests. There are four parser directives used. - -@table @code -@item $if -The @code{$if} construct allows bindings to be made based on the -editing mode, the terminal being used, or the application using -Readline. The text of the test extends to the end of the line; -no characters are required to isolate it. - -@table @code -@item mode -The @code{mode=} form of the @code{$if} directive is used to test -whether Readline is in @code{emacs} or @code{vi} mode. -This may be used in conjunction -with the @samp{set keymap} command, for instance, to set bindings in -the @code{emacs-standard} and @code{emacs-ctlx} keymaps only if -Readline is starting out in @code{emacs} mode. - -@item term -The @code{term=} form may be used to include terminal-specific -key bindings, perhaps to bind the key sequences output by the -terminal's function keys. The word on the right side of the -@samp{=} is tested against both the full name of the terminal and -the portion of the terminal name before the first @samp{-}. This -allows @code{sun} to match both @code{sun} and @code{sun-cmd}, -for instance. - -@item application -The @var{application} construct is used to include -application-specific settings. Each program using the Readline -library sets the @var{application name}, and you can test for -a particular value. -This could be used to bind key sequences to functions useful for -a specific program. For instance, the following command adds a -key sequence that quotes the current or previous word in Bash: -@example -$if Bash -# Quote the current or previous word -"\C-xq": "\eb\"\ef\"" -$endif -@end example -@end table - -@item $endif -This command, as seen in the previous example, terminates an -@code{$if} command. - -@item $else -Commands in this branch of the @code{$if} directive are executed if -the test fails. - -@item $include -This directive takes a single filename as an argument and reads commands -and bindings from that file. -For example, the following directive reads from @file{/etc/inputrc}: -@example -$include /etc/inputrc -@end example -@end table - -@node Sample Init File -@subsection Sample Init File - -Here is an example of an @var{inputrc} file. This illustrates key -binding, variable assignment, and conditional syntax. - -@example -@page -# This file controls the behaviour of line input editing for -# programs that use the GNU Readline library. Existing -# programs include FTP, Bash, and GDB. -# -# You can re-read the inputrc file with C-x C-r. -# Lines beginning with '#' are comments. -# -# First, include any systemwide bindings and variable -# assignments from /etc/Inputrc -$include /etc/Inputrc - -# -# Set various bindings for emacs mode. - -set editing-mode emacs - -$if mode=emacs - -Meta-Control-h: backward-kill-word Text after the function name is ignored - -# -# Arrow keys in keypad mode -# -#"\M-OD": backward-char -#"\M-OC": forward-char -#"\M-OA": previous-history -#"\M-OB": next-history -# -# Arrow keys in ANSI mode -# -"\M-[D": backward-char -"\M-[C": forward-char -"\M-[A": previous-history -"\M-[B": next-history -# -# Arrow keys in 8 bit keypad mode -# -#"\M-\C-OD": backward-char -#"\M-\C-OC": forward-char -#"\M-\C-OA": previous-history -#"\M-\C-OB": next-history -# -# Arrow keys in 8 bit ANSI mode -# -#"\M-\C-[D": backward-char -#"\M-\C-[C": forward-char -#"\M-\C-[A": previous-history -#"\M-\C-[B": next-history - -C-q: quoted-insert - -$endif - -# An old-style binding. This happens to be the default. -TAB: complete - -# Macros that are convenient for shell interaction -$if Bash -# edit the path -"\C-xp": "PATH=$@{PATH@}\e\C-e\C-a\ef\C-f" -# prepare to type a quoted word -- -# insert open and close double quotes -# and move to just after the open quote -"\C-x\"": "\"\"\C-b" -# insert a backslash (testing backslash escapes -# in sequences and macros) -"\C-x\\": "\\" -# Quote the current or previous word -"\C-xq": "\eb\"\ef\"" -# Add a binding to refresh the line, which is unbound -"\C-xr": redraw-current-line -# Edit variable on current line. -"\M-\C-v": "\C-a\C-k$\C-y\M-\C-e\C-a\C-y=" -$endif - -# use a visible bell if one is available -set bell-style visible - -# don't strip characters to 7 bits when reading -set input-meta on - -# allow iso-latin1 characters to be inserted rather -# than converted to prefix-meta sequences -set convert-meta off - -# display characters with the eighth bit set directly -# rather than as meta-prefixed characters -set output-meta on - -# if there are more than 150 possible completions for -# a word, ask the user if he wants to see all of them -set completion-query-items 150 - -# For FTP -$if Ftp -"\C-xg": "get \M-?" -"\C-xt": "put \M-?" -"\M-.": yank-last-arg -$endif -@end example - -@node Bindable Readline Commands -@section Bindable Readline Commands - -@menu -* Commands For Moving:: Moving about the line. -* Commands For History:: Getting at previous lines. -* Commands For Text:: Commands for changing text. -* Commands For Killing:: Commands for killing and yanking. -* Numeric Arguments:: Specifying numeric arguments, repeat counts. -* Commands For Completion:: Getting Readline to do the typing for you. -* Keyboard Macros:: Saving and re-executing typed characters -* Miscellaneous Commands:: Other miscellaneous commands. -@end menu - -This section describes Readline commands that may be bound to key -sequences. -@ifset BashFeatures -You can list your key bindings by executing -@w{@code{bind -P}} or, for a more terse format, suitable for an -@var{inputrc} file, @w{@code{bind -p}}. (@xref{Bash Builtins}.) -@end ifset -Command names without an accompanying key sequence are unbound by default. - -In the following descriptions, @dfn{point} refers to the current cursor -position, and @dfn{mark} refers to a cursor position saved by the -@code{set-mark} command. -The text between the point and mark is referred to as the @dfn{region}. - -@node Commands For Moving -@subsection Commands For Moving -@ftable @code -@item beginning-of-line (C-a) -Move to the start of the current line. - -@item end-of-line (C-e) -Move to the end of the line. - -@item forward-char (C-f) -Move forward a character. - -@item backward-char (C-b) -Move back a character. - -@item forward-word (M-f) -Move forward to the end of the next word. -Words are composed of letters and digits. - -@item backward-word (M-b) -Move back to the start of the current or previous word. -Words are composed of letters and digits. - -@ifset BashFeatures -@item shell-forward-word () -Move forward to the end of the next word. -Words are delimited by non-quoted shell metacharacters. - -@item shell-backward-word () -Move back to the start of the current or previous word. -Words are delimited by non-quoted shell metacharacters. -@end ifset - -@item clear-screen (C-l) -Clear the screen and redraw the current line, -leaving the current line at the top of the screen. - -@item redraw-current-line () -Refresh the current line. By default, this is unbound. - -@end ftable - -@node Commands For History -@subsection Commands For Manipulating The History - -@ftable @code -@item accept-line (Newline or Return) -@ifset BashFeatures -Accept the line regardless of where the cursor is. -If this line is -non-empty, add it to the history list according to the setting of -the @env{HISTCONTROL} and @env{HISTIGNORE} variables. -If this line is a modified history line, then restore the history line -to its original state. -@end ifset -@ifclear BashFeatures -Accept the line regardless of where the cursor is. -If this line is -non-empty, it may be added to the history list for future recall with -@code{add_history()}. -If this line is a modified history line, the history line is restored -to its original state. -@end ifclear - -@item previous-history (C-p) -Move `back' through the history list, fetching the previous command. - -@item next-history (C-n) -Move `forward' through the history list, fetching the next command. - -@item beginning-of-history (M-<) -Move to the first line in the history. - -@item end-of-history (M->) -Move to the end of the input history, i.e., the line currently -being entered. - -@item reverse-search-history (C-r) -Search backward starting at the current line and moving `up' through -the history as necessary. This is an incremental search. - -@item forward-search-history (C-s) -Search forward starting at the current line and moving `down' through -the the history as necessary. This is an incremental search. - -@item non-incremental-reverse-search-history (M-p) -Search backward starting at the current line and moving `up' -through the history as necessary using a non-incremental search -for a string supplied by the user. - -@item non-incremental-forward-search-history (M-n) -Search forward starting at the current line and moving `down' -through the the history as necessary using a non-incremental search -for a string supplied by the user. - -@item history-search-forward () -Search forward through the history for the string of characters -between the start of the current line and the point. -The search string must match at the beginning of a history line. -This is a non-incremental search. -By default, this command is unbound. - -@item history-search-backward () -Search backward through the history for the string of characters -between the start of the current line and the point. -The search string must match at the beginning of a history line. -This is a non-incremental search. -By default, this command is unbound. - -@item history-substr-search-forward () -Search forward through the history for the string of characters -between the start of the current line and the point. -The search string may match anywhere in a history line. -This is a non-incremental search. -By default, this command is unbound. - -@item history-substr-search-backward () -Search backward through the history for the string of characters -between the start of the current line and the point. -The search string may match anywhere in a history line. -This is a non-incremental search. -By default, this command is unbound. - -@item yank-nth-arg (M-C-y) -Insert the first argument to the previous command (usually -the second word on the previous line) at point. -With an argument @var{n}, -insert the @var{n}th word from the previous command (the words -in the previous command begin with word 0). A negative argument -inserts the @var{n}th word from the end of the previous command. -Once the argument @var{n} is computed, the argument is extracted -as if the @samp{!@var{n}} history expansion had been specified. - -@item yank-last-arg (M-. or M-_) -Insert last argument to the previous command (the last word of the -previous history entry). -With a numeric argument, behave exactly like @code{yank-nth-arg}. -Successive calls to @code{yank-last-arg} move back through the history -list, inserting the last word (or the word specified by the argument to -the first call) of each line in turn. -Any numeric argument supplied to these successive calls determines -the direction to move through the history. A negative argument switches -the direction through the history (back or forward). -The history expansion facilities are used to extract the last argument, -as if the @samp{!$} history expansion had been specified. - -@end ftable - -@node Commands For Text -@subsection Commands For Changing Text - -@ftable @code -@item delete-char (C-d) -Delete the character at point. If point is at the -beginning of the line, there are no characters in the line, and -the last character typed was not bound to @code{delete-char}, then -return @sc{eof}. - -@item backward-delete-char (Rubout) -Delete the character behind the cursor. A numeric argument means -to kill the characters instead of deleting them. - -@item forward-backward-delete-char () -Delete the character under the cursor, unless the cursor is at the -end of the line, in which case the character behind the cursor is -deleted. By default, this is not bound to a key. - -@item quoted-insert (C-q or C-v) -Add the next character typed to the line verbatim. This is -how to insert key sequences like @kbd{C-q}, for example. - -@ifclear BashFeatures -@item tab-insert (M-@key{TAB}) -Insert a tab character. -@end ifclear - -@item self-insert (a, b, A, 1, !, @dots{}) -Insert yourself. - -@item transpose-chars (C-t) -Drag the character before the cursor forward over -the character at the cursor, moving the -cursor forward as well. If the insertion point -is at the end of the line, then this -transposes the last two characters of the line. -Negative arguments have no effect. - -@item transpose-words (M-t) -Drag the word before point past the word after point, -moving point past that word as well. -If the insertion point is at the end of the line, this transposes -the last two words on the line. - -@item upcase-word (M-u) -Uppercase the current (or following) word. With a negative argument, -uppercase the previous word, but do not move the cursor. - -@item downcase-word (M-l) -Lowercase the current (or following) word. With a negative argument, -lowercase the previous word, but do not move the cursor. - -@item capitalize-word (M-c) -Capitalize the current (or following) word. With a negative argument, -capitalize the previous word, but do not move the cursor. - -@item overwrite-mode () -Toggle overwrite mode. With an explicit positive numeric argument, -switches to overwrite mode. With an explicit non-positive numeric -argument, switches to insert mode. This command affects only -@code{emacs} mode; @code{vi} mode does overwrite differently. -Each call to @code{readline()} starts in insert mode. - -In overwrite mode, characters bound to @code{self-insert} replace -the text at point rather than pushing the text to the right. -Characters bound to @code{backward-delete-char} replace the character -before point with a space. - -By default, this command is unbound. - -@end ftable - -@node Commands For Killing -@subsection Killing And Yanking - -@ftable @code - -@item kill-line (C-k) -Kill the text from point to the end of the line. - -@item backward-kill-line (C-x Rubout) -Kill backward to the beginning of the line. - -@item unix-line-discard (C-u) -Kill backward from the cursor to the beginning of the current line. - -@item kill-whole-line () -Kill all characters on the current line, no matter where point is. -By default, this is unbound. - -@item kill-word (M-d) -Kill from point to the end of the current word, or if between -words, to the end of the next word. -Word boundaries are the same as @code{forward-word}. - -@item backward-kill-word (M-@key{DEL}) -Kill the word behind point. -Word boundaries are the same as @code{backward-word}. - -@ifset BashFeatures -@item shell-kill-word () -Kill from point to the end of the current word, or if between -words, to the end of the next word. -Word boundaries are the same as @code{shell-forward-word}. - -@item shell-backward-kill-word () -Kill the word behind point. -Word boundaries are the same as @code{shell-backward-word}. -@end ifset - -@item unix-word-rubout (C-w) -Kill the word behind point, using white space as a word boundary. -The killed text is saved on the kill-ring. - -@item unix-filename-rubout () -Kill the word behind point, using white space and the slash character -as the word boundaries. -The killed text is saved on the kill-ring. - -@item delete-horizontal-space () -Delete all spaces and tabs around point. By default, this is unbound. - -@item kill-region () -Kill the text in the current region. -By default, this command is unbound. - -@item copy-region-as-kill () -Copy the text in the region to the kill buffer, so it can be yanked -right away. By default, this command is unbound. - -@item copy-backward-word () -Copy the word before point to the kill buffer. -The word boundaries are the same as @code{backward-word}. -By default, this command is unbound. - -@item copy-forward-word () -Copy the word following point to the kill buffer. -The word boundaries are the same as @code{forward-word}. -By default, this command is unbound. - -@item yank (C-y) -Yank the top of the kill ring into the buffer at point. - -@item yank-pop (M-y) -Rotate the kill-ring, and yank the new top. You can only do this if -the prior command is @code{yank} or @code{yank-pop}. -@end ftable - -@node Numeric Arguments -@subsection Specifying Numeric Arguments -@ftable @code - -@item digit-argument (@kbd{M-0}, @kbd{M-1}, @dots{} @kbd{M--}) -Add this digit to the argument already accumulating, or start a new -argument. @kbd{M--} starts a negative argument. - -@item universal-argument () -This is another way to specify an argument. -If this command is followed by one or more digits, optionally with a -leading minus sign, those digits define the argument. -If the command is followed by digits, executing @code{universal-argument} -again ends the numeric argument, but is otherwise ignored. -As a special case, if this command is immediately followed by a -character that is neither a digit or minus sign, the argument count -for the next command is multiplied by four. -The argument count is initially one, so executing this function the -first time makes the argument count four, a second time makes the -argument count sixteen, and so on. -By default, this is not bound to a key. -@end ftable - -@node Commands For Completion -@subsection Letting Readline Type For You - -@ftable @code -@item complete (@key{TAB}) -Attempt to perform completion on the text before point. -The actual completion performed is application-specific. -@ifset BashFeatures -Bash attempts completion treating the text as a variable (if the -text begins with @samp{$}), username (if the text begins with -@samp{~}), hostname (if the text begins with @samp{@@}), or -command (including aliases and functions) in turn. If none -of these produces a match, filename completion is attempted. -@end ifset -@ifclear BashFeatures -The default is filename completion. -@end ifclear - -@item possible-completions (M-?) -List the possible completions of the text before point. -When displaying completions, Readline sets the number of columns used -for display to the value of @code{completion-display-width}, the value of -the environment variable @env{COLUMNS}, or the screen width, in that order. - -@item insert-completions (M-*) -Insert all completions of the text before point that would have -been generated by @code{possible-completions}. - -@item menu-complete () -Similar to @code{complete}, but replaces the word to be completed -with a single match from the list of possible completions. -Repeated execution of @code{menu-complete} steps through the list -of possible completions, inserting each match in turn. -At the end of the list of completions, the bell is rung -(subject to the setting of @code{bell-style}) -and the original text is restored. -An argument of @var{n} moves @var{n} positions forward in the list -of matches; a negative argument may be used to move backward -through the list. -This command is intended to be bound to @key{TAB}, but is unbound -by default. - -@item menu-complete-backward () -Identical to @code{menu-complete}, but moves backward through the list -of possible completions, as if @code{menu-complete} had been given a -negative argument. - -@item delete-char-or-list () -Deletes the character under the cursor if not at the beginning or -end of the line (like @code{delete-char}). -If at the end of the line, behaves identically to -@code{possible-completions}. -This command is unbound by default. - -@ifset BashFeatures -@item complete-filename (M-/) -Attempt filename completion on the text before point. - -@item possible-filename-completions (C-x /) -List the possible completions of the text before point, -treating it as a filename. - -@item complete-username (M-~) -Attempt completion on the text before point, treating -it as a username. - -@item possible-username-completions (C-x ~) -List the possible completions of the text before point, -treating it as a username. - -@item complete-variable (M-$) -Attempt completion on the text before point, treating -it as a shell variable. - -@item possible-variable-completions (C-x $) -List the possible completions of the text before point, -treating it as a shell variable. - -@item complete-hostname (M-@@) -Attempt completion on the text before point, treating -it as a hostname. - -@item possible-hostname-completions (C-x @@) -List the possible completions of the text before point, -treating it as a hostname. - -@item complete-command (M-!) -Attempt completion on the text before point, treating -it as a command name. Command completion attempts to -match the text against aliases, reserved words, shell -functions, shell builtins, and finally executable filenames, -in that order. - -@item possible-command-completions (C-x !) -List the possible completions of the text before point, -treating it as a command name. - -@item dynamic-complete-history (M-@key{TAB}) -Attempt completion on the text before point, comparing -the text against lines from the history list for possible -completion matches. - -@item dabbrev-expand () -Attempt menu completion on the text before point, comparing -the text against lines from the history list for possible -completion matches. - -@item complete-into-braces (M-@{) -Perform filename completion and insert the list of possible completions -enclosed within braces so the list is available to the shell -(@pxref{Brace Expansion}). - -@end ifset -@end ftable - -@node Keyboard Macros -@subsection Keyboard Macros -@ftable @code - -@item start-kbd-macro (C-x () -Begin saving the characters typed into the current keyboard macro. - -@item end-kbd-macro (C-x )) -Stop saving the characters typed into the current keyboard macro -and save the definition. - -@item call-last-kbd-macro (C-x e) -Re-execute the last keyboard macro defined, by making the characters -in the macro appear as if typed at the keyboard. - -@item print-last-kbd-macro () -Print the last keboard macro defined in a format suitable for the -@var{inputrc} file. - -@end ftable - -@node Miscellaneous Commands -@subsection Some Miscellaneous Commands -@ftable @code - -@item re-read-init-file (C-x C-r) -Read in the contents of the @var{inputrc} file, and incorporate -any bindings or variable assignments found there. - -@item abort (C-g) -Abort the current editing command and -ring the terminal's bell (subject to the setting of -@code{bell-style}). - -@item do-uppercase-version (M-a, M-b, M-@var{x}, @dots{}) -If the metafied character @var{x} is lowercase, run the command -that is bound to the corresponding uppercase character. - -@item prefix-meta (@key{ESC}) -Metafy the next character typed. This is for keyboards -without a meta key. Typing @samp{@key{ESC} f} is equivalent to typing -@kbd{M-f}. - -@item undo (C-_ or C-x C-u) -Incremental undo, separately remembered for each line. - -@item revert-line (M-r) -Undo all changes made to this line. This is like executing the @code{undo} -command enough times to get back to the beginning. - -@ifset BashFeatures -@item tilde-expand (M-&) -@end ifset -@ifclear BashFeatures -@item tilde-expand (M-~) -@end ifclear -Perform tilde expansion on the current word. - -@item set-mark (C-@@) -Set the mark to the point. If a -numeric argument is supplied, the mark is set to that position. - -@item exchange-point-and-mark (C-x C-x) -Swap the point with the mark. The current cursor position is set to -the saved position, and the old cursor position is saved as the mark. - -@item character-search (C-]) -A character is read and point is moved to the next occurrence of that -character. A negative count searches for previous occurrences. - -@item character-search-backward (M-C-]) -A character is read and point is moved to the previous occurrence -of that character. A negative count searches for subsequent -occurrences. - -@item skip-csi-sequence () -Read enough characters to consume a multi-key sequence such as those -defined for keys like Home and End. Such sequences begin with a -Control Sequence Indicator (CSI), usually ESC-[. If this sequence is -bound to "\e[", keys producing such sequences will have no effect -unless explicitly bound to a readline command, instead of inserting -stray characters into the editing buffer. This is unbound by default, -but usually bound to ESC-[. - -@item insert-comment (M-#) -Without a numeric argument, the value of the @code{comment-begin} -variable is inserted at the beginning of the current line. -If a numeric argument is supplied, this command acts as a toggle: if -the characters at the beginning of the line do not match the value -of @code{comment-begin}, the value is inserted, otherwise -the characters in @code{comment-begin} are deleted from the beginning of -the line. -In either case, the line is accepted as if a newline had been typed. -@ifset BashFeatures -The default value of @code{comment-begin} causes this command -to make the current line a shell comment. -If a numeric argument causes the comment character to be removed, the line -will be executed by the shell. -@end ifset - -@item dump-functions () -Print all of the functions and their key bindings to the -Readline output stream. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an @var{inputrc} file. This command is unbound by default. - -@item dump-variables () -Print all of the settable variables and their values to the -Readline output stream. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an @var{inputrc} file. This command is unbound by default. - -@item dump-macros () -Print all of the Readline key sequences bound to macros and the -strings they output. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an @var{inputrc} file. This command is unbound by default. - -@ifset BashFeatures -@item glob-complete-word (M-g) -The word before point is treated as a pattern for pathname expansion, -with an asterisk implicitly appended. This pattern is used to -generate a list of matching file names for possible completions. - -@item glob-expand-word (C-x *) -The word before point is treated as a pattern for pathname expansion, -and the list of matching file names is inserted, replacing the word. -If a numeric argument is supplied, a @samp{*} is appended before -pathname expansion. - -@item glob-list-expansions (C-x g) -The list of expansions that would have been generated by -@code{glob-expand-word} is displayed, and the line is redrawn. -If a numeric argument is supplied, a @samp{*} is appended before -pathname expansion. - -@item display-shell-version (C-x C-v) -Display version information about the current instance of Bash. - -@item shell-expand-line (M-C-e) -Expand the line as the shell does. -This performs alias and history expansion as well as all of the shell -word expansions (@pxref{Shell Expansions}). - -@item history-expand-line (M-^) -Perform history expansion on the current line. - -@item magic-space () -Perform history expansion on the current line and insert a space -(@pxref{History Interaction}). - -@item alias-expand-line () -Perform alias expansion on the current line (@pxref{Aliases}). - -@item history-and-alias-expand-line () -Perform history and alias expansion on the current line. - -@item insert-last-argument (M-. or M-_) -A synonym for @code{yank-last-arg}. - -@item operate-and-get-next (C-o) -Accept the current line for execution and fetch the next line -relative to the current line from the history for editing. Any -argument is ignored. - -@item edit-and-execute-command (C-xC-e) -Invoke an editor on the current command line, and execute the result as shell -commands. -Bash attempts to invoke -@code{$VISUAL}, @code{$EDITOR}, and @code{emacs} -as the editor, in that order. - -@end ifset - -@ifclear BashFeatures -@item emacs-editing-mode (C-e) -When in @code{vi} command mode, this causes a switch to @code{emacs} -editing mode. - -@item vi-editing-mode (M-C-j) -When in @code{emacs} editing mode, this causes a switch to @code{vi} -editing mode. - -@end ifclear - -@end ftable - -@node Readline vi Mode -@section Readline vi Mode - -While the Readline library does not have a full set of @code{vi} -editing functions, it does contain enough to allow simple editing -of the line. The Readline @code{vi} mode behaves as specified in -the @sc{posix} standard. - -@ifset BashFeatures -In order to switch interactively between @code{emacs} and @code{vi} -editing modes, use the @samp{set -o emacs} and @samp{set -o vi} -commands (@pxref{The Set Builtin}). -@end ifset -@ifclear BashFeatures -In order to switch interactively between @code{emacs} and @code{vi} -editing modes, use the command @kbd{M-C-j} (bound to emacs-editing-mode -when in @code{vi} mode and to vi-editing-mode in @code{emacs} mode). -@end ifclear -The Readline default is @code{emacs} mode. - -When you enter a line in @code{vi} mode, you are already placed in -`insertion' mode, as if you had typed an @samp{i}. Pressing @key{ESC} -switches you into `command' mode, where you can edit the text of the -line with the standard @code{vi} movement keys, move to previous -history lines with @samp{k} and subsequent lines with @samp{j}, and -so forth. - -@ifset BashFeatures -@node Programmable Completion -@section Programmable Completion -@cindex programmable completion - -When word completion is attempted for an argument to a command for -which a completion specification (a @var{compspec}) has been defined -using the @code{complete} builtin (@pxref{Programmable Completion Builtins}), -the programmable completion facilities are invoked. - -First, the command name is identified. -If a compspec has been defined for that command, the -compspec is used to generate the list of possible completions for the word. -If the command word is the empty string (completion attempted at the -beginning of an empty line), any compspec defined with -the @option{-E} option to @code{complete} is used. -If the command word is a full pathname, a compspec for the full -pathname is searched for first. -If no compspec is found for the full pathname, an attempt is made to -find a compspec for the portion following the final slash. -If those searches do not result in a compspec, any compspec defined with -the @option{-D} option to @code{complete} is used as the default. - -Once a compspec has been found, it is used to generate the list of -matching words. -If a compspec is not found, the default Bash completion -described above (@pxref{Commands For Completion}) is performed. - -First, the actions specified by the compspec are used. -Only matches which are prefixed by the word being completed are -returned. -When the @option{-f} or @option{-d} option is used for filename or -directory name completion, the shell variable @env{FIGNORE} is -used to filter the matches. -@xref{Bash Variables}, for a description of @env{FIGNORE}. - -Any completions specified by a filename expansion pattern to the -@option{-G} option are generated next. -The words generated by the pattern need not match the word being completed. -The @env{GLOBIGNORE} shell variable is not used to filter the matches, -but the @env{FIGNORE} shell variable is used. - -Next, the string specified as the argument to the @option{-W} option -is considered. -The string is first split using the characters in the @env{IFS} -special variable as delimiters. -Shell quoting is honored. -Each word is then expanded using -brace expansion, tilde expansion, parameter and variable expansion, -command substitution, and arithmetic expansion, -as described above (@pxref{Shell Expansions}). -The results are split using the rules described above -(@pxref{Word Splitting}). -The results of the expansion are prefix-matched against the word being -completed, and the matching words become the possible completions. - -After these matches have been generated, any shell function or command -specified with the @option{-F} and @option{-C} options is invoked. -When the command or function is invoked, the @env{COMP_LINE}, -@env{COMP_POINT}, @env{COMP_KEY}, and @env{COMP_TYPE} variables are -assigned values as described above (@pxref{Bash Variables}). -If a shell function is being invoked, the @env{COMP_WORDS} and -@env{COMP_CWORD} variables are also set. -When the function or command is invoked, the first argument ($1) is the -name of the command whose arguments are being completed, the -second argument ($2) is the word being completed, and the third argument -($3) is the word preceding the word being completed on the current command -line. -No filtering of the generated completions against the word being completed -is performed; the function or command has complete freedom in generating -the matches. - -Any function specified with @option{-F} is invoked first. -The function may use any of the shell facilities, including the -@code{compgen} and @code{compopt} builtins described below -(@pxref{Programmable Completion Builtins}), to generate the matches. -It must put the possible completions in the @env{COMPREPLY} array -variable, one per array element. - -Next, any command specified with the @option{-C} option is invoked -in an environment equivalent to command substitution. -It should print a list of completions, one per line, to -the standard output. -Backslash may be used to escape a newline, if necessary. - -After all of the possible completions are generated, any filter -specified with the @option{-X} option is applied to the list. -The filter is a pattern as used for pathname expansion; a @samp{&} -in the pattern is replaced with the text of the word being completed. -A literal @samp{&} may be escaped with a backslash; the backslash -is removed before attempting a match. -Any completion that matches the pattern will be removed from the list. -A leading @samp{!} negates the pattern; in this case any completion -not matching the pattern will be removed. - -Finally, any prefix and suffix specified with the @option{-P} and @option{-S} -options are added to each member of the completion list, and the result is -returned to the Readline completion code as the list of possible -completions. - -If the previously-applied actions do not generate any matches, and the -@option{-o dirnames} option was supplied to @code{complete} when the -compspec was defined, directory name completion is attempted. - -If the @option{-o plusdirs} option was supplied to @code{complete} when -the compspec was defined, directory name completion is attempted and any -matches are added to the results of the other actions. - -By default, if a compspec is found, whatever it generates is returned to -the completion code as the full set of possible completions. -The default Bash completions are not attempted, and the Readline default -of filename completion is disabled. -If the @option{-o bashdefault} option was supplied to @code{complete} when -the compspec was defined, the default Bash completions are attempted -if the compspec generates no matches. -If the @option{-o default} option was supplied to @code{complete} when the -compspec was defined, Readline's default completion will be performed -if the compspec (and, if attempted, the default Bash completions) -generate no matches. - -When a compspec indicates that directory name completion is desired, -the programmable completion functions force Readline to append a slash -to completed names which are symbolic links to directories, subject to -the value of the @var{mark-directories} Readline variable, regardless -of the setting of the @var{mark-symlinked-directories} Readline variable. - -There is some support for dynamically modifying completions. This is -most useful when used in combination with a default completion specified -with @option{-D}. It's possible for shell functions executed as completion -handlers to indicate that completion should be retried by returning an -exit status of 124. If a shell function returns 124, and changes -the compspec associated with the command on which completion is being -attempted (supplied as the first argument when the function is executed), -programmable completion restarts from the beginning, with an -attempt to find a new compspec for that command. This allows a set of -completions to be built dynamically as completion is attempted, rather than -being loaded all at once. - -For instance, assuming that there is a library of compspecs, each kept in a -file corresponding to the name of the command, the following default -completion function would load completions dynamically: - -@example -_completion_loader() -@{ - . "/etc/bash_completion.d/$1.sh" >/dev/null 2>&1 && return 124 -@} -complete -D -F _completion_loader -@end example - -@node Programmable Completion Builtins -@section Programmable Completion Builtins -@cindex completion builtins - -Three builtin commands are available to manipulate the programmable completion -facilities: one to specify how the arguments to a particular command are to -be completed, and two to modify the completion as it is happening. - -@table @code -@item compgen -@btindex compgen -@example -@code{compgen [@var{option}] [@var{word}]} -@end example - -Generate possible completion matches for @var{word} according to -the @var{option}s, which may be any option accepted by the -@code{complete} -builtin with the exception of @option{-p} and @option{-r}, and write -the matches to the standard output. -When using the @option{-F} or @option{-C} options, the various shell variables -set by the programmable completion facilities, while available, will not -have useful values. - -The matches will be generated in the same way as if the programmable -completion code had generated them directly from a completion specification -with the same flags. -If @var{word} is specified, only those completions matching @var{word} -will be displayed. - -The return value is true unless an invalid option is supplied, or no -matches were generated. - -@item complete -@btindex complete -@example -@code{complete [-abcdefgjksuv] [-o @var{comp-option}] [-DE] [-A @var{action}] [-G @var{globpat}] [-W @var{wordlist}] -[-F @var{function}] [-C @var{command}] [-X @var{filterpat}] -[-P @var{prefix}] [-S @var{suffix}] @var{name} [@var{name} @dots{}]} -@code{complete -pr [-DE] [@var{name} @dots{}]} -@end example - -Specify how arguments to each @var{name} should be completed. -If the @option{-p} option is supplied, or if no options are supplied, existing -completion specifications are printed in a way that allows them to be -reused as input. -The @option{-r} option removes a completion specification for -each @var{name}, or, if no @var{name}s are supplied, all -completion specifications. -The @option{-D} option indicates that the remaining options and actions should -apply to the ``default'' command completion; that is, completion attempted -on a command for which no completion has previously been defined. -The @option{-E} option indicates that the remaining options and actions should -apply to ``empty'' command completion; that is, completion attempted on a -blank line. - -The process of applying these completion specifications when word completion -is attempted is described above (@pxref{Programmable Completion}). The -@option{-D} option takes precedence over @option{-E}. - -Other options, if specified, have the following meanings. -The arguments to the @option{-G}, @option{-W}, and @option{-X} options -(and, if necessary, the @option{-P} and @option{-S} options) -should be quoted to protect them from expansion before the -@code{complete} builtin is invoked. - - -@table @code -@item -o @var{comp-option} -The @var{comp-option} controls several aspects of the compspec's behavior -beyond the simple generation of completions. -@var{comp-option} may be one of: - -@table @code - -@item bashdefault -Perform the rest of the default Bash completions if the compspec -generates no matches. - -@item default -Use Readline's default filename completion if the compspec generates -no matches. - -@item dirnames -Perform directory name completion if the compspec generates no matches. - -@item filenames -Tell Readline that the compspec generates filenames, so it can perform any -filename-specific processing (like adding a slash to directory names -quoting special characters, or suppressing trailing spaces). -This option is intended to be used with shell functions specified -with @option{-F}. - -@item noquote -Tell Readline not to quote the completed words if they are filenames -(quoting filenames is the default). - -@item nospace -Tell Readline not to append a space (the default) to words completed at -the end of the line. - -@item plusdirs -After any matches defined by the compspec are generated, -directory name completion is attempted and any -matches are added to the results of the other actions. - -@end table - -@item -A @var{action} -The @var{action} may be one of the following to generate a list of possible -completions: - -@table @code -@item alias -Alias names. May also be specified as @option{-a}. - -@item arrayvar -Array variable names. - -@item binding -Readline key binding names (@pxref{Bindable Readline Commands}). - -@item builtin -Names of shell builtin commands. May also be specified as @option{-b}. - -@item command -Command names. May also be specified as @option{-c}. - -@item directory -Directory names. May also be specified as @option{-d}. - -@item disabled -Names of disabled shell builtins. - -@item enabled -Names of enabled shell builtins. - -@item export -Names of exported shell variables. May also be specified as @option{-e}. - -@item file -File names. May also be specified as @option{-f}. - -@item function -Names of shell functions. - -@item group -Group names. May also be specified as @option{-g}. - -@item helptopic -Help topics as accepted by the @code{help} builtin (@pxref{Bash Builtins}). - -@item hostname -Hostnames, as taken from the file specified by the -@env{HOSTFILE} shell variable (@pxref{Bash Variables}). - -@item job -Job names, if job control is active. May also be specified as @option{-j}. - -@item keyword -Shell reserved words. May also be specified as @option{-k}. - -@item running -Names of running jobs, if job control is active. - -@item service -Service names. May also be specified as @option{-s}. - -@item setopt -Valid arguments for the @option{-o} option to the @code{set} builtin -(@pxref{The Set Builtin}). - -@item shopt -Shell option names as accepted by the @code{shopt} builtin -(@pxref{Bash Builtins}). - -@item signal -Signal names. - -@item stopped -Names of stopped jobs, if job control is active. - -@item user -User names. May also be specified as @option{-u}. - -@item variable -Names of all shell variables. May also be specified as @option{-v}. -@end table - -@item -C @var{command} -@var{command} is executed in a subshell environment, and its output is -used as the possible completions. - -@item -F @var{function} -The shell function @var{function} is executed in the current shell -environment. -When it is executed, $1 is the name of the command whose arguments are -being completed, $2 is the word being completed, and $3 is the word -preceding the word being completed, as described above -(@pxref{Programmable Completion}). -When it finishes, the possible completions are retrieved from the value -of the @env{COMPREPLY} array variable. - -@item -G @var{globpat} -The filename expansion pattern @var{globpat} is expanded to generate -the possible completions. - -@item -P @var{prefix} -@var{prefix} is added at the beginning of each possible completion -after all other options have been applied. - -@item -S @var{suffix} -@var{suffix} is appended to each possible completion -after all other options have been applied. - -@item -W @var{wordlist} -The @var{wordlist} is split using the characters in the -@env{IFS} special variable as delimiters, and each resultant word -is expanded. -The possible completions are the members of the resultant list which -match the word being completed. - -@item -X @var{filterpat} -@var{filterpat} is a pattern as used for filename expansion. -It is applied to the list of possible completions generated by the -preceding options and arguments, and each completion matching -@var{filterpat} is removed from the list. -A leading @samp{!} in @var{filterpat} negates the pattern; in this -case, any completion not matching @var{filterpat} is removed. -@end table - -The return value is true unless an invalid option is supplied, an option -other than @option{-p} or @option{-r} is supplied without a @var{name} -argument, an attempt is made to remove a completion specification for -a @var{name} for which no specification exists, or -an error occurs adding a completion specification. - -@item compopt -@btindex compopt -@example -@code{compopt} [-o @var{option}] [-DE] [+o @var{option}] [@var{name}] -@end example -Modify completion options for each @var{name} according to the -@var{option}s, or for the currently-executing completion if no @var{name}s -are supplied. -If no @var{option}s are given, display the completion options for each -@var{name} or the current completion. -The possible values of @var{option} are those valid for the @code{complete} -builtin described above. -The @option{-D} option indicates that the remaining options should -apply to the ``default'' command completion; that is, completion attempted -on a command for which no completion has previously been defined. -The @option{-E} option indicates that the remaining options should -apply to ``empty'' command completion; that is, completion attempted on a -blank line. - -The @option{-D} option takes precedence over @option{-E}. - -The return value is true unless an invalid option is supplied, an attempt -is made to modify the options for a @var{name} for which no completion -specification exists, or an output error occurs. - -@end table - -@node A Programmable Completion Example -@section A Programmable Completion Example - -The most common way to obtain additional completion functionality beyond -the default actions @code{complete} and @code{compgen} provide is to use -a shell function and bind it to a particular command using @code{complete -F}. - -The following function provides completions for the @code{cd} builtin. -It is a reasonably good example of what shell functions must do when -used for completion. This function uses the word passsed as @code{$2} -to determine the directory name to complete. You can also use the -@code{COMP_WORDS} array variable; the current word is indexed by the -@code{COMP_CWORD} variable. - -The function relies on the @code{complete} and @code{compgen} builtins -to do much of the work, adding only the things that the Bash @code{cd} -does beyond accepting basic directory names: -tilde expansion (@pxref{Tilde Expansion}), -searching directories in @var{$CDPATH}, which is described above -(@pxref{Bourne Shell Builtins}), -and basic support for the @code{cdable_vars} shell option -(@pxref{The Shopt Builtin}). -@code{_comp_cd} modifies the value of @var{IFS} so that it contains only -a newline to accommodate file names containing spaces and tabs -- -@code{compgen} prints the possible completions it generates one per line. - -Possible completions go into the @var{COMPREPLY} array variable, one -completion per array element. The programmable completion system retrieves -the completions from there when the function returns. - -@example -# A completion function for the cd builtin -# based on the cd completion function from the bash_completion package -_comp_cd() -@{ - local IFS=$' \t\n' # normalize IFS - local cur _skipdot _cdpath - local i j k - - # Tilde expansion, with side effect of expanding tilde to full pathname - case "$2" in - \~*) eval cur="$2" ;; - *) cur=$2 ;; - esac - - # no cdpath or absolute pathname -- straight directory completion - if [[ -z "$@{CDPATH:-@}" ]] || [[ "$cur" == @@(./*|../*|/*) ]]; then - # compgen prints paths one per line; could also use while loop - IFS=$'\n' - COMPREPLY=( $(compgen -d -- "$cur") ) - IFS=$' \t\n' - # CDPATH+directories in the current directory if not in CDPATH - else - IFS=$'\n' - _skipdot=false - # preprocess CDPATH to convert null directory names to . - _cdpath=$@{CDPATH/#:/.:@} - _cdpath=$@{_cdpath//::/:.:@} - _cdpath=$@{_cdpath/%:/:.@} - for i in $@{_cdpath//:/$'\n'@}; do - if [[ $i -ef . ]]; then _skipdot=true; fi - k="$@{#COMPREPLY[@@]@}" - for j in $( compgen -d -- "$i/$cur" ); do - COMPREPLY[k++]=$@{j#$i/@} # cut off directory - done - done - $_skipdot || COMPREPLY+=( $(compgen -d -- "$cur") ) - IFS=$' \t\n' - fi - - # variable names if appropriate shell option set and no completions - if shopt -q cdable_vars && [[ $@{#COMPREPLY[@@]@} -eq 0 ]]; then - COMPREPLY=( $(compgen -v -- "$cur") ) - fi - - return 0 -@} -@end example - -We install the completion function using the @option{-F} option to -@code{complete}: - -@example -# Tell readline to quote appropriate and append slashes to directories; -# use the bash default completion for other arguments -complete -o filenames -o nospace -o bashdefault -F _comp_cd cd -@end example - -@noindent -Since we'd like Bash and Readline to take care of some -of the other details for us, we use several other options to tell Bash -and Readline what to do. The @option{-o filenames} option tells Readline -that the possible completions should be treated as filenames, and quoted -appropriately. That option will also cause Readline to append a slash to -filenames it can determine are directories (which is why we might want to -extend @code{_comp_cd} to append a slash if we're using directories found -via @var{CDPATH}: Readline can't tell those completions are directories). -The @option{-o nospace} option tells Readline to not append a space -character to the directory name, in case we want to append to it. -The @option{-o bashdefault} option brings in the rest of the "Bash default" -completions -- possible completion that Bash adds to the default Readline -set. These include things like command name completion, variable completion -for words beginning with @samp{@{}, completions containing pathname -expansion patterns (@pxref{Filename Expansion}), and so on. - -Once installed using @code{complete}, @code{_comp_cd} will be called every -time we attempt word completion for a @code{cd} command. - -Many more examples -- an extensive collection of completions for most of -the common GNU, Unix, and Linux commands -- are available as part of the -bash_completion project. This is installed by default on many GNU/Linux -distributions. Originally written by Ian Macdonald, the project now lives -at @url{http://bash-completion.alioth.debian.org/}. There are ports for -other systems such as Solaris and Mac OS X. - -An older version of the bash_completion package is distributed with bash -in the @file{examples/complete} subdirectory. - -@end ifset diff --git a/lib/readline/doc/version.texi~ b/lib/readline/doc/version.texi~ deleted file mode 100644 index c7a6bc46c..000000000 --- a/lib/readline/doc/version.texi~ +++ /dev/null @@ -1,10 +0,0 @@ -@ignore -Copyright (C) 1988-2011 Free Software Foundation, Inc. -@end ignore - -@set EDITION 6.2 -@set VERSION 6.2 -@set UPDATED December 21 2011 -@set UPDATED-MONTH December 2011 - -@set LASTCHANGE Wed Dec 21 21:04:12 EST 2011 diff --git a/lib/readline/history.c~ b/lib/readline/history.c~ deleted file mode 100644 index 83d56949e..000000000 --- a/lib/readline/history.c~ +++ /dev/null @@ -1,519 +0,0 @@ -/* history.c -- standalone history library */ - -/* Copyright (C) 1989-2011 Free Software Foundation, Inc. - - This file contains the GNU History Library (History), a set of - routines for managing the text of previously typed lines. - - History is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - History is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with History. If not, see . -*/ - -/* The goal is to make the implementation transparent, so that you - don't have to know what data types are used, just what functions - you can call. I think I have done that. */ -#define READLINE_LIBRARY - -#if defined (HAVE_CONFIG_H) -# include -#endif - -#include - -#if defined (HAVE_STDLIB_H) -# include -#else -# include "ansi_stdlib.h" -#endif /* HAVE_STDLIB_H */ - -#if defined (HAVE_UNISTD_H) -# ifdef _MINIX -# include -# endif -# include -#endif - -#include "history.h" -#include "histlib.h" - -#include "xmalloc.h" - -/* The number of slots to increase the_history by. */ -#define DEFAULT_HISTORY_GROW_SIZE 50 - -static char *hist_inittime PARAMS((void)); - -/* **************************************************************** */ -/* */ -/* History Functions */ -/* */ -/* **************************************************************** */ - -/* An array of HIST_ENTRY. This is where we store the history. */ -static HIST_ENTRY **the_history = (HIST_ENTRY **)NULL; - -/* Non-zero means that we have enforced a limit on the amount of - history that we save. */ -static int history_stifled; - -/* The current number of slots allocated to the input_history. */ -static int history_size; - -/* If HISTORY_STIFLED is non-zero, then this is the maximum number of - entries to remember. */ -int history_max_entries; -int max_input_history; /* backwards compatibility */ - -/* The current location of the interactive history pointer. Just makes - life easier for outside callers. */ -int history_offset; - -/* The number of strings currently stored in the history list. */ -int history_length; - -/* The logical `base' of the history array. It defaults to 1. */ -int history_base = 1; - -/* Return the current HISTORY_STATE of the history. */ -HISTORY_STATE * -history_get_history_state () -{ - HISTORY_STATE *state; - - state = (HISTORY_STATE *)xmalloc (sizeof (HISTORY_STATE)); - state->entries = the_history; - state->offset = history_offset; - state->length = history_length; - state->size = history_size; - state->flags = 0; - if (history_stifled) - state->flags |= HS_STIFLED; - - return (state); -} - -/* Set the state of the current history array to STATE. */ -void -history_set_history_state (state) - HISTORY_STATE *state; -{ - the_history = state->entries; - history_offset = state->offset; - history_length = state->length; - history_size = state->size; - if (state->flags & HS_STIFLED) - history_stifled = 1; -} - -/* Begin a session in which the history functions might be used. This - initializes interactive variables. */ -void -using_history () -{ - history_offset = history_length; -} - -/* Return the number of bytes that the primary history entries are using. - This just adds up the lengths of the_history->lines and the associated - timestamps. */ -int -history_total_bytes () -{ - register int i, result; - - for (i = result = 0; the_history && the_history[i]; i++) - result += HISTENT_BYTES (the_history[i]); - - return (result); -} - -/* Returns the magic number which says what history element we are - looking at now. In this implementation, it returns history_offset. */ -int -where_history () -{ - return (history_offset); -} - -/* Make the current history item be the one at POS, an absolute index. - Returns zero if POS is out of range, else non-zero. */ -int -history_set_pos (pos) - int pos; -{ - if (pos > history_length || pos < 0 || !the_history) - return (0); - history_offset = pos; - return (1); -} - -/* Return the current history array. The caller has to be careful, since this - is the actual array of data, and could be bashed or made corrupt easily. - The array is terminated with a NULL pointer. */ -HIST_ENTRY ** -history_list () -{ - return (the_history); -} - -/* Return the history entry at the current position, as determined by - history_offset. If there is no entry there, return a NULL pointer. */ -HIST_ENTRY * -current_history () -{ - return ((history_offset == history_length) || the_history == 0) - ? (HIST_ENTRY *)NULL - : the_history[history_offset]; -} - -/* Back up history_offset to the previous history entry, and return - a pointer to that entry. If there is no previous entry then return - a NULL pointer. */ -HIST_ENTRY * -previous_history () -{ - return history_offset ? the_history[--history_offset] : (HIST_ENTRY *)NULL; -} - -/* Move history_offset forward to the next history entry, and return - a pointer to that entry. If there is no next entry then return a - NULL pointer. */ -HIST_ENTRY * -next_history () -{ - return (history_offset == history_length) ? (HIST_ENTRY *)NULL : the_history[++history_offset]; -} - -/* Return the history entry which is logically at OFFSET in the history array. - OFFSET is relative to history_base. */ -HIST_ENTRY * -history_get (offset) - int offset; -{ - int local_index; - - local_index = offset - history_base; - return (local_index >= history_length || local_index < 0 || the_history == 0) - ? (HIST_ENTRY *)NULL - : the_history[local_index]; -} - -HIST_ENTRY * -alloc_history_entry (string, ts) - char *string; - char *ts; -{ - HIST_ENTRY *temp; - - temp = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY)); - - temp->line = string ? savestring (string) : string; - temp->data = (char *)NULL; - temp->timestamp = ts; - - return temp; -} - -time_t -history_get_time (hist) - HIST_ENTRY *hist; -{ - char *ts; - time_t t; - - if (hist == 0 || hist->timestamp == 0) - return 0; - ts = hist->timestamp; - if (ts[0] != history_comment_char) - return 0; - t = (time_t) strtol (ts + 1, (char **)NULL, 10); /* XXX - should use strtol() here */ - return t; -} - -static char * -hist_inittime () -{ - time_t t; - char ts[64], *ret; - - t = (time_t) time ((time_t *)0); -#if defined (HAVE_VSNPRINTF) /* assume snprintf if vsnprintf exists */ - snprintf (ts, sizeof (ts) - 1, "X%lu", (unsigned long) t); -#else - sprintf (ts, "X%lu", (unsigned long) t); -#endif - ret = savestring (ts); - ret[0] = history_comment_char; - - return ret; -} - -/* Place STRING at the end of the history list. The data field - is set to NULL. */ -void -add_history (string) - const char *string; -{ - HIST_ENTRY *temp; - - if (history_stifled && (history_length == history_max_entries)) - { - register int i; - - /* If the history is stifled, and history_length is zero, - and it equals history_max_entries, we don't save items. */ - if (history_length == 0) - return; - - /* If there is something in the slot, then remove it. */ - if (the_history[0]) - (void) free_history_entry (the_history[0]); - - /* Copy the rest of the entries, moving down one slot. */ - for (i = 0; i < history_length; i++) - the_history[i] = the_history[i + 1]; - - history_base++; - } - else - { - if (history_size == 0) - { - history_size = DEFAULT_HISTORY_GROW_SIZE; - the_history = (HIST_ENTRY **)xmalloc (history_size * sizeof (HIST_ENTRY *)); - history_length = 1; - } - else - { - if (history_length == (history_size - 1)) - { - history_size += DEFAULT_HISTORY_GROW_SIZE; - the_history = (HIST_ENTRY **) - xrealloc (the_history, history_size * sizeof (HIST_ENTRY *)); - } - history_length++; - } - } - - temp = alloc_history_entry (string, hist_inittime ()); - - the_history[history_length] = (HIST_ENTRY *)NULL; - the_history[history_length - 1] = temp; -} - -/* Change the time stamp of the most recent history entry to STRING. */ -void -add_history_time (string) - const char *string; -{ - HIST_ENTRY *hs; - - if (string == 0) - return; - hs = the_history[history_length - 1]; - FREE (hs->timestamp); - hs->timestamp = savestring (string); -} - -/* Free HIST and return the data so the calling application can free it - if necessary and desired. */ -histdata_t -free_history_entry (hist) - HIST_ENTRY *hist; -{ - histdata_t x; - - if (hist == 0) - return ((histdata_t) 0); - FREE (hist->line); - FREE (hist->timestamp); - x = hist->data; - xfree (hist); - return (x); -} - -HIST_ENTRY * -copy_history_entry (hist) - HIST_ENTRY *hist; -{ - HIST_ENTRY *ret; - char *ts; - - if (hist == 0) - return hist; - - ret = alloc_history_entry (hist->line, (char *)NULL); - - ts = hist->timestamp ? savestring (hist->timestamp) : hist->timestamp; - ret->timestamp = ts; - - ret->data = hist->data; - - return ret; -} - -/* Make the history entry at WHICH have LINE and DATA. This returns - the old entry so you can dispose of the data. In the case of an - invalid WHICH, a NULL pointer is returned. */ -HIST_ENTRY * -replace_history_entry (which, line, data) - int which; - const char *line; - histdata_t data; -{ - HIST_ENTRY *temp, *old_value; - - if (which < 0 || which >= history_length) - return ((HIST_ENTRY *)NULL); - - temp = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY)); - old_value = the_history[which]; - - temp->line = savestring (line); - temp->data = data; - temp->timestamp = savestring (old_value->timestamp); - the_history[which] = temp; - - return (old_value); -} - -/* Replace the DATA in the specified history entries, replacing OLD with - NEW. WHICH says which one(s) to replace: WHICH == -1 means to replace - all of the history entries where entry->data == OLD; WHICH == -2 means - to replace the `newest' history entry where entry->data == OLD; and - WHICH >= 0 means to replace that particular history entry's data, as - long as it matches OLD. */ -void -replace_history_data (which,old, new) - int which; - histdata_t *old, *new; -{ - HIST_ENTRY *entry; - register int i, last; - - if (which < -2 || which >= history_length || history_length == 0 || the_history == 0) - return; - - if (which >= 0) - { - entry = the_history[which]; - if (entry && entry->data == old) - entry->data = new; - return; - } - - last = -1; - for (i = 0; i < history_length; i++) - { - entry = the_history[i]; - if (entry == 0) - continue; - if (entry->data == old) - { - last = i; - if (which == -1) - entry->data = new; - } - } - if (which == -2 && last >= 0) - { - entry = the_history[last]; - entry->data = new; /* XXX - we don't check entry->old */ - } -} - -/* Remove history element WHICH from the history. The removed - element is returned to you so you can free the line, data, - and containing structure. */ -HIST_ENTRY * -remove_history (which) - int which; -{ - HIST_ENTRY *return_value; - register int i; - - if (which < 0 || which >= history_length || history_length == 0 || the_history == 0) - return ((HIST_ENTRY *)NULL); - - return_value = the_history[which]; - - for (i = which; i < history_length; i++) - the_history[i] = the_history[i + 1]; - - history_length--; - - return (return_value); -} - -/* Stifle the history list, remembering only MAX number of lines. */ -void -stifle_history (max) - int max; -{ - register int i, j; - - if (max < 0) - max = 0; - - if (history_length > max) - { - /* This loses because we cannot free the data. */ - for (i = 0, j = history_length - max; i < j; i++) - free_history_entry (the_history[i]); - - history_base = i; - for (j = 0, i = history_length - max; j < max; i++, j++) - the_history[j] = the_history[i]; - the_history[j] = (HIST_ENTRY *)NULL; - history_length = j; - } - - history_stifled = 1; - max_input_history = history_max_entries = max; -} - -/* Stop stifling the history. This returns the previous maximum - number of history entries. The value is positive if the history - was stifled, negative if it wasn't. */ -int -unstifle_history () -{ - if (history_stifled) - { - history_stifled = 0; - return (history_max_entries); - } - else - return (-history_max_entries); -} - -int -history_is_stifled () -{ - return (history_stifled); -} - -void -clear_history () -{ - register int i; - - /* This loses because we cannot free the data. */ - for (i = 0; i < history_length; i++) - { - free_history_entry (the_history[i]); - the_history[i] = (HIST_ENTRY *)NULL; - } - - history_offset = history_length = 0; -} diff --git a/lib/readline/isearch.c~ b/lib/readline/isearch.c~ deleted file mode 100644 index f656756fa..000000000 --- a/lib/readline/isearch.c~ +++ /dev/null @@ -1,782 +0,0 @@ -/* isearch.c - incremental searching */ - -/* **************************************************************** */ -/* */ -/* I-Search and Searching */ -/* */ -/* **************************************************************** */ - -/* Copyright (C) 1987-2012 Free Software Foundation, Inc. - - This file is part of the GNU Readline Library (Readline), a library - for reading lines of text with interactive input and history editing. - - Readline is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Readline is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Readline. If not, see . -*/ - -#define READLINE_LIBRARY - -#if defined (HAVE_CONFIG_H) -# include -#endif - -#include - -#include - -#if defined (HAVE_UNISTD_H) -# include -#endif - -#if defined (HAVE_STDLIB_H) -# include -#else -# include "ansi_stdlib.h" -#endif - -#include "rldefs.h" -#include "rlmbutil.h" - -#include "readline.h" -#include "history.h" - -#include "rlprivate.h" -#include "xmalloc.h" - -/* Variables exported to other files in the readline library. */ -char *_rl_isearch_terminators = (char *)NULL; - -_rl_search_cxt *_rl_iscxt = 0; - -/* Variables imported from other files in the readline library. */ -extern HIST_ENTRY *_rl_saved_line_for_history; - -static int rl_search_history PARAMS((int, int)); - -static _rl_search_cxt *_rl_isearch_init PARAMS((int)); -static void _rl_isearch_fini PARAMS((_rl_search_cxt *)); -static int _rl_isearch_cleanup PARAMS((_rl_search_cxt *, int)); - -/* Last line found by the current incremental search, so we don't `find' - identical lines many times in a row. Now part of isearch context. */ -/* static char *prev_line_found; */ - -/* Last search string and its length. */ -static char *last_isearch_string; -static int last_isearch_string_len; - -static char * const default_isearch_terminators = "\033\012"; - -_rl_search_cxt * -_rl_scxt_alloc (type, flags) - int type, flags; -{ - _rl_search_cxt *cxt; - - cxt = (_rl_search_cxt *)xmalloc (sizeof (_rl_search_cxt)); - - cxt->type = type; - cxt->sflags = flags; - - cxt->search_string = 0; - cxt->search_string_size = cxt->search_string_index = 0; - - cxt->lines = 0; - cxt->allocated_line = 0; - cxt->hlen = cxt->hindex = 0; - - cxt->save_point = rl_point; - cxt->save_mark = rl_mark; - cxt->save_line = where_history (); - cxt->last_found_line = cxt->save_line; - cxt->prev_line_found = 0; - - cxt->save_undo_list = 0; - - cxt->keymap = _rl_keymap; - cxt->okeymap = _rl_keymap; - - cxt->history_pos = 0; - cxt->direction = 0; - - cxt->prevc = cxt->lastc = 0; - - cxt->sline = 0; - cxt->sline_len = cxt->sline_index = 0; - - cxt->search_terminators = 0; - - return cxt; -} - -void -_rl_scxt_dispose (cxt, flags) - _rl_search_cxt *cxt; - int flags; -{ - FREE (cxt->search_string); - FREE (cxt->allocated_line); - FREE (cxt->lines); - - xfree (cxt); -} - -/* Search backwards through the history looking for a string which is typed - interactively. Start with the current line. */ -int -rl_reverse_search_history (sign, key) - int sign, key; -{ - return (rl_search_history (-sign, key)); -} - -/* Search forwards through the history looking for a string which is typed - interactively. Start with the current line. */ -int -rl_forward_search_history (sign, key) - int sign, key; -{ - return (rl_search_history (sign, key)); -} - -/* Display the current state of the search in the echo-area. - SEARCH_STRING contains the string that is being searched for, - DIRECTION is zero for forward, or non-zero for reverse, - WHERE is the history list number of the current line. If it is - -1, then this line is the starting one. */ -static void -rl_display_search (search_string, reverse_p, where) - char *search_string; - int reverse_p, where; -{ - char *message; - int msglen, searchlen; - - searchlen = (search_string && *search_string) ? strlen (search_string) : 0; - - message = (char *)xmalloc (searchlen + 33); - msglen = 0; - -#if defined (NOTDEF) - if (where != -1) - { - sprintf (message, "[%d]", where + history_base); - msglen = strlen (message); - } -#endif /* NOTDEF */ - - message[msglen++] = '('; - - if (reverse_p) - { - strcpy (message + msglen, "reverse-"); - msglen += 8; - } - - strcpy (message + msglen, "i-search)`"); - msglen += 10; - - if (search_string) - { - strcpy (message + msglen, search_string); - msglen += searchlen; - } - - strcpy (message + msglen, "': "); - - rl_message ("%s", message); - xfree (message); - (*rl_redisplay_function) (); -} - -static _rl_search_cxt * -_rl_isearch_init (direction) - int direction; -{ - _rl_search_cxt *cxt; - register int i; - HIST_ENTRY **hlist; - - cxt = _rl_scxt_alloc (RL_SEARCH_ISEARCH, 0); - if (direction < 0) - cxt->sflags |= SF_REVERSE; - - cxt->search_terminators = _rl_isearch_terminators ? _rl_isearch_terminators - : default_isearch_terminators; - - /* Create an arrary of pointers to the lines that we want to search. */ - hlist = history_list (); - rl_maybe_replace_line (); - i = 0; - if (hlist) - for (i = 0; hlist[i]; i++); - - /* Allocate space for this many lines, +1 for the current input line, - and remember those lines. */ - cxt->lines = (char **)xmalloc ((1 + (cxt->hlen = i)) * sizeof (char *)); - for (i = 0; i < cxt->hlen; i++) - cxt->lines[i] = hlist[i]->line; - - if (_rl_saved_line_for_history) - cxt->lines[i] = _rl_saved_line_for_history->line; - else - { - /* Keep track of this so we can free it. */ - cxt->allocated_line = (char *)xmalloc (1 + strlen (rl_line_buffer)); - strcpy (cxt->allocated_line, &rl_line_buffer[0]); - cxt->lines[i] = cxt->allocated_line; - } - - cxt->hlen++; - - /* The line where we start the search. */ - cxt->history_pos = cxt->save_line; - - rl_save_prompt (); - - /* Initialize search parameters. */ - cxt->search_string = (char *)xmalloc (cxt->search_string_size = 128); - cxt->search_string[cxt->search_string_index = 0] = '\0'; - - /* Normalize DIRECTION into 1 or -1. */ - cxt->direction = (direction >= 0) ? 1 : -1; - - cxt->sline = rl_line_buffer; - cxt->sline_len = strlen (cxt->sline); - cxt->sline_index = rl_point; - - _rl_iscxt = cxt; /* save globally */ - - return cxt; -} - -static void -_rl_isearch_fini (cxt) - _rl_search_cxt *cxt; -{ - /* First put back the original state. */ - strcpy (rl_line_buffer, cxt->lines[cxt->save_line]); - - rl_restore_prompt (); - - /* Save the search string for possible later use. */ - FREE (last_isearch_string); - last_isearch_string = cxt->search_string; - last_isearch_string_len = cxt->search_string_index; - cxt->search_string = 0; - - if (cxt->last_found_line < cxt->save_line) - rl_get_previous_history (cxt->save_line - cxt->last_found_line, 0); - else - rl_get_next_history (cxt->last_found_line - cxt->save_line, 0); - - /* If the string was not found, put point at the end of the last matching - line. If last_found_line == orig_line, we didn't find any matching - history lines at all, so put point back in its original position. */ - if (cxt->sline_index < 0) - { - if (cxt->last_found_line == cxt->save_line) - cxt->sline_index = cxt->save_point; - else - cxt->sline_index = strlen (rl_line_buffer); - rl_mark = cxt->save_mark; - } - - rl_point = cxt->sline_index; - /* Don't worry about where to put the mark here; rl_get_previous_history - and rl_get_next_history take care of it. */ - - rl_clear_message (); -} - -int -_rl_search_getchar (cxt) - _rl_search_cxt *cxt; -{ - int c; - - /* Read a key and decide how to proceed. */ - RL_SETSTATE(RL_STATE_MOREINPUT); - c = cxt->lastc = rl_read_key (); - RL_UNSETSTATE(RL_STATE_MOREINPUT); - -#if defined (HANDLE_MULTIBYTE) - /* This ends up with C (and LASTC) being set to the last byte of the - multibyte character. In most cases c == lastc == mb[0] */ - if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - c = cxt->lastc = _rl_read_mbstring (cxt->lastc, cxt->mb, MB_LEN_MAX); -#endif - - return c; -} - -#define ENDSRCH_CHAR(c) \ - ((CTRL_CHAR (c) || META_CHAR (c) || (c) == RUBOUT) && ((c) != CTRL ('G'))) - -/* Process just-read character C according to isearch context CXT. Return - -1 if the caller should just free the context and return, 0 if we should - break out of the loop, and 1 if we should continue to read characters. */ -int -_rl_isearch_dispatch (cxt, c) - _rl_search_cxt *cxt; - int c; -{ - int n, wstart, wlen, limit, cval; - rl_command_func_t *f; - Keymap m; - - f = (rl_command_func_t *)NULL; - - if (c < 0) - { - cxt->sflags |= SF_FAILED; - cxt->history_pos = cxt->last_found_line; - return -1; - } - - /* If we are moving into a new keymap, modify cxt->keymap and go on. - This can be a problem if c == ESC and we want to terminate the - incremental search, so we check */ - if (c >= 0 && cxt->keymap[c].type == ISKMAP && strchr (cxt->search_terminators, cxt->lastc) == 0) - { - /* _rl_keyseq_timeout specified in milliseconds; _rl_input_queued - takes microseconds, so multiply by 1000. If we don't get any - additional input and we this keymap shadows another function, process - that key as if it was all we read. */ - if (_rl_keyseq_timeout > 0 && - RL_ISSTATE (RL_STATE_CALLBACK) == 0 && - RL_ISSTATE (RL_STATE_INPUTPENDING) == 0 && - _rl_pushed_input_available () == 0 && - ((Keymap)(cxt->keymap[c].function))[ANYOTHERKEY].function && - _rl_input_queued (_rl_keyseq_timeout*1000) == 0) - goto add_character; - - cxt->okeymap = cxt->keymap; - cxt->keymap = FUNCTION_TO_KEYMAP (cxt->keymap, c); - cxt->sflags |= SF_CHGKMAP; - /* XXX - we should probably save this sequence, so we can do - something useful if this doesn't end up mapping to a command we - interpret here. Right now we just save the most recent character - that caused the index into a new keymap. */ - cxt->prevc = c; -#if defined (HANDLE_MULTIBYTE) - if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - { - if (cxt->mb[1] == 0) - { - cxt->pmb[0] = c; /* XXX should be == cxt->mb[0] */ - cxt->pmb[1] = '\0'; - } - else - memcpy (cxt->pmb, cxt->mb, sizeof (cxt->pmb)); - } -#endif - return 1; - } - -add_character: - - /* Translate the keys we do something with to opcodes. */ - if (c >= 0 && cxt->keymap[c].type == ISFUNC) - { - f = cxt->keymap[c].function; - - if (f == rl_reverse_search_history) - cxt->lastc = (cxt->sflags & SF_REVERSE) ? -1 : -2; - else if (f == rl_forward_search_history) - cxt->lastc = (cxt->sflags & SF_REVERSE) ? -2 : -1; - else if (f == rl_rubout) - cxt->lastc = -3; - else if (c == CTRL ('G') || f == rl_abort) - cxt->lastc = -4; - else if (c == CTRL ('W') || f == rl_unix_word_rubout) /* XXX */ - cxt->lastc = -5; - else if (c == CTRL ('Y') || f == rl_yank) /* XXX */ - cxt->lastc = -6; - } - - /* If we changed the keymap earlier while translating a key sequence into - a command, restore it now that we've succeeded. */ - if (cxt->sflags & SF_CHGKMAP) - { - cxt->keymap = cxt->okeymap; - cxt->sflags &= ~SF_CHGKMAP; - /* If we indexed into a new keymap, but didn't map to a command that - affects the search (lastc > 0), and the character that mapped to a - new keymap would have ended the search (ENDSRCH_CHAR(cxt->prevc)), - handle that now as if the previous char would have ended the search - and we would have read the current character. */ - /* XXX - should we check cxt->mb? */ - if (cxt->lastc > 0 && ENDSRCH_CHAR (cxt->prevc)) - { - rl_stuff_char (cxt->lastc); - rl_execute_next (cxt->prevc); - /* XXX - do we insert everything in cxt->pmb? */ - return (0); - } - /* Otherwise, if the current character is mapped to self-insert or - nothing (i.e., not an editing command), and the previous character - was a keymap index, then we need to insert both the previous - character and the current character into the search string. */ - else if (cxt->lastc > 0 && cxt->prevc > 0 && - cxt->keymap[cxt->prevc].type == ISKMAP && - (f == 0 || f == rl_insert)) - { - /* Make lastc be the next character read */ - /* XXX - do we insert everything in cxt->mb? */ - rl_execute_next (cxt->lastc); - /* Dispatch on the previous character (insert into search string) */ - cxt->lastc = cxt->prevc; -#if defined (HANDLE_MULTIBYTE) - /* Have to overwrite cxt->mb here because dispatch uses it below */ - if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - { - if (cxt->pmb[1] == 0) - { - cxt->mb[0] = cxt->lastc; /* == cxt->prevc */ - cxt->mb[1] = '\0'; - } - else - memcpy (cxt->mb, cxt->pmb, sizeof (cxt->mb)); - } -#endif - cxt->prevc = 0; - } - else if (cxt->lastc > 0 && cxt->prevc > 0 && f && f != rl_insert) - { - rl_stuff_char (cxt->lastc); - rl_execute_next (cxt->prevc); - /* XXX - do we insert everything in cxt->pmb? */ - return (0); - } - } - - /* The characters in isearch_terminators (set from the user-settable - variable isearch-terminators) are used to terminate the search but - not subsequently execute the character as a command. The default - value is "\033\012" (ESC and C-J). */ - if (cxt->lastc > 0 && strchr (cxt->search_terminators, cxt->lastc)) - { - /* ESC still terminates the search, but if there is pending - input or if input arrives within 0.1 seconds (on systems - with select(2)) it is used as a prefix character - with rl_execute_next. WATCH OUT FOR THIS! This is intended - to allow the arrow keys to be used like ^F and ^B are used - to terminate the search and execute the movement command. - XXX - since _rl_input_available depends on the application- - settable keyboard timeout value, this could alternatively - use _rl_input_queued(100000) */ - if (cxt->lastc == ESC && _rl_input_available ()) - rl_execute_next (ESC); - return (0); - } - -#if defined (HANDLE_MULTIBYTE) - if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - { - if (cxt->lastc >= 0 && (cxt->mb[0] && cxt->mb[1] == '\0') && ENDSRCH_CHAR (cxt->lastc)) - { - /* This sets rl_pending_input to LASTC; it will be picked up the next - time rl_read_key is called. */ - rl_execute_next (cxt->lastc); - return (0); - } - } - else -#endif - if (cxt->lastc >= 0 && ENDSRCH_CHAR (cxt->lastc)) - { - /* This sets rl_pending_input to LASTC; it will be picked up the next - time rl_read_key is called. */ - rl_execute_next (cxt->lastc); - return (0); - } - - /* Now dispatch on the character. `Opcodes' affect the search string or - state. Other characters are added to the string. */ - switch (cxt->lastc) - { - /* search again */ - case -1: - if (cxt->search_string_index == 0) - { - if (last_isearch_string) - { - cxt->search_string_size = 64 + last_isearch_string_len; - cxt->search_string = (char *)xrealloc (cxt->search_string, cxt->search_string_size); - strcpy (cxt->search_string, last_isearch_string); - cxt->search_string_index = last_isearch_string_len; - rl_display_search (cxt->search_string, (cxt->sflags & SF_REVERSE), -1); - break; - } - return (1); - } - else if (cxt->sflags & SF_REVERSE) - cxt->sline_index--; - else if (cxt->sline_index != cxt->sline_len) - cxt->sline_index++; - else - rl_ding (); - break; - - /* switch directions */ - case -2: - cxt->direction = -cxt->direction; - if (cxt->direction < 0) - cxt->sflags |= SF_REVERSE; - else - cxt->sflags &= ~SF_REVERSE; - break; - - /* delete character from search string. */ - case -3: /* C-H, DEL */ - /* This is tricky. To do this right, we need to keep a - stack of search positions for the current search, with - sentinels marking the beginning and end. But this will - do until we have a real isearch-undo. */ - if (cxt->search_string_index == 0) - rl_ding (); - else - cxt->search_string[--cxt->search_string_index] = '\0'; - break; - - case -4: /* C-G, abort */ - rl_replace_line (cxt->lines[cxt->save_line], 0); - rl_point = cxt->save_point; - rl_mark = cxt->save_mark; - rl_restore_prompt(); - rl_clear_message (); - - return -1; - - case -5: /* C-W */ - /* skip over portion of line we already matched and yank word */ - wstart = rl_point + cxt->search_string_index; - if (wstart >= rl_end) - { - rl_ding (); - break; - } - - /* if not in a word, move to one. */ - cval = _rl_char_value (rl_line_buffer, wstart); - if (_rl_walphabetic (cval) == 0) - { - rl_ding (); - break; - } - n = MB_NEXTCHAR (rl_line_buffer, wstart, 1, MB_FIND_NONZERO);; - while (n < rl_end) - { - cval = _rl_char_value (rl_line_buffer, n); - if (_rl_walphabetic (cval) == 0) - break; - n = MB_NEXTCHAR (rl_line_buffer, n, 1, MB_FIND_NONZERO);; - } - wlen = n - wstart + 1; - if (cxt->search_string_index + wlen + 1 >= cxt->search_string_size) - { - cxt->search_string_size += wlen + 1; - cxt->search_string = (char *)xrealloc (cxt->search_string, cxt->search_string_size); - } - for (; wstart < n; wstart++) - cxt->search_string[cxt->search_string_index++] = rl_line_buffer[wstart]; - cxt->search_string[cxt->search_string_index] = '\0'; - break; - - case -6: /* C-Y */ - /* skip over portion of line we already matched and yank rest */ - wstart = rl_point + cxt->search_string_index; - if (wstart >= rl_end) - { - rl_ding (); - break; - } - n = rl_end - wstart + 1; - if (cxt->search_string_index + n + 1 >= cxt->search_string_size) - { - cxt->search_string_size += n + 1; - cxt->search_string = (char *)xrealloc (cxt->search_string, cxt->search_string_size); - } - for (n = wstart; n < rl_end; n++) - cxt->search_string[cxt->search_string_index++] = rl_line_buffer[n]; - cxt->search_string[cxt->search_string_index] = '\0'; - break; - - /* Add character to search string and continue search. */ - default: - if (cxt->search_string_index + 2 >= cxt->search_string_size) - { - cxt->search_string_size += 128; - cxt->search_string = (char *)xrealloc (cxt->search_string, cxt->search_string_size); - } -#if defined (HANDLE_MULTIBYTE) - if (MB_CUR_MAX > 1 && rl_byte_oriented == 0) - { - int j, l; - - if (cxt->mb[0] == 0 || cxt->mb[1] == 0) - cxt->search_string[cxt->search_string_index++] = cxt->mb[0]; - else - for (j = 0, l = RL_STRLEN (cxt->mb); j < l; ) - cxt->search_string[cxt->search_string_index++] = cxt->mb[j++]; - } - else -#endif - cxt->search_string[cxt->search_string_index++] = cxt->lastc; /* XXX - was c instead of lastc */ - cxt->search_string[cxt->search_string_index] = '\0'; - break; - } - - for (cxt->sflags &= ~(SF_FOUND|SF_FAILED);; ) - { - limit = cxt->sline_len - cxt->search_string_index + 1; - - /* Search the current line. */ - while ((cxt->sflags & SF_REVERSE) ? (cxt->sline_index >= 0) : (cxt->sline_index < limit)) - { - if (STREQN (cxt->search_string, cxt->sline + cxt->sline_index, cxt->search_string_index)) - { - cxt->sflags |= SF_FOUND; - break; - } - else - cxt->sline_index += cxt->direction; - } - if (cxt->sflags & SF_FOUND) - break; - - /* Move to the next line, but skip new copies of the line - we just found and lines shorter than the string we're - searching for. */ - do - { - /* Move to the next line. */ - cxt->history_pos += cxt->direction; - - /* At limit for direction? */ - if ((cxt->sflags & SF_REVERSE) ? (cxt->history_pos < 0) : (cxt->history_pos == cxt->hlen)) - { - cxt->sflags |= SF_FAILED; - break; - } - - /* We will need these later. */ - cxt->sline = cxt->lines[cxt->history_pos]; - cxt->sline_len = strlen (cxt->sline); - } - while ((cxt->prev_line_found && STREQ (cxt->prev_line_found, cxt->lines[cxt->history_pos])) || - (cxt->search_string_index > cxt->sline_len)); - - if (cxt->sflags & SF_FAILED) - break; - - /* Now set up the line for searching... */ - cxt->sline_index = (cxt->sflags & SF_REVERSE) ? cxt->sline_len - cxt->search_string_index : 0; - } - - if (cxt->sflags & SF_FAILED) - { - /* We cannot find the search string. Ding the bell. */ - rl_ding (); - cxt->history_pos = cxt->last_found_line; - return 1; - } - - /* We have found the search string. Just display it. But don't - actually move there in the history list until the user accepts - the location. */ - if (cxt->sflags & SF_FOUND) - { - cxt->prev_line_found = cxt->lines[cxt->history_pos]; - rl_replace_line (cxt->lines[cxt->history_pos], 0); - rl_point = cxt->sline_index; - cxt->last_found_line = cxt->history_pos; - rl_display_search (cxt->search_string, (cxt->sflags & SF_REVERSE), (cxt->history_pos == cxt->save_line) ? -1 : cxt->history_pos); - } - - return 1; -} - -static int -_rl_isearch_cleanup (cxt, r) - _rl_search_cxt *cxt; - int r; -{ - if (r >= 0) - _rl_isearch_fini (cxt); - _rl_scxt_dispose (cxt, 0); - _rl_iscxt = 0; - - RL_UNSETSTATE(RL_STATE_ISEARCH); - - return (r != 0); -} - -/* Search through the history looking for an interactively typed string. - This is analogous to i-search. We start the search in the current line. - DIRECTION is which direction to search; >= 0 means forward, < 0 means - backwards. */ -static int -rl_search_history (direction, invoking_key) - int direction, invoking_key; -{ - _rl_search_cxt *cxt; /* local for now, but saved globally */ - int c, r; - - RL_SETSTATE(RL_STATE_ISEARCH); - cxt = _rl_isearch_init (direction); - - rl_display_search (cxt->search_string, (cxt->sflags & SF_REVERSE), -1); - - /* If we are using the callback interface, all we do is set up here and - return. The key is that we leave RL_STATE_ISEARCH set. */ - if (RL_ISSTATE (RL_STATE_CALLBACK)) - return (0); - - r = -1; - for (;;) - { - c = _rl_search_getchar (cxt); - /* We might want to handle EOF here (c == 0) */ - r = _rl_isearch_dispatch (cxt, cxt->lastc); - if (r <= 0) - break; - } - - /* The searching is over. The user may have found the string that she - was looking for, or else she may have exited a failing search. If - LINE_INDEX is -1, then that shows that the string searched for was - not found. We use this to determine where to place rl_point. */ - return (_rl_isearch_cleanup (cxt, r)); -} - -#if defined (READLINE_CALLBACKS) -/* Called from the callback functions when we are ready to read a key. The - callback functions know to call this because RL_ISSTATE(RL_STATE_ISEARCH). - If _rl_isearch_dispatch finishes searching, this function is responsible - for turning off RL_STATE_ISEARCH, which it does using _rl_isearch_cleanup. */ -int -_rl_isearch_callback (cxt) - _rl_search_cxt *cxt; -{ - int c, r; - - c = _rl_search_getchar (cxt); - /* We might want to handle EOF here */ - r = _rl_isearch_dispatch (cxt, cxt->lastc); - - return (r <= 0) ? _rl_isearch_cleanup (cxt, r) : 0; -} -#endif diff --git a/lib/readline/misc.c~ b/lib/readline/misc.c~ deleted file mode 100644 index f9cce34b2..000000000 --- a/lib/readline/misc.c~ +++ /dev/null @@ -1,688 +0,0 @@ -/* misc.c -- miscellaneous bindable readline functions. */ - -/* Copyright (C) 1987-2009 Free Software Foundation, Inc. - - This file is part of the GNU Readline Library (Readline), a library - for reading lines of text with interactive input and history editing. - - Readline is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Readline is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Readline. If not, see . -*/ - -#define READLINE_LIBRARY - -#if defined (HAVE_CONFIG_H) -# include -#endif - -#if defined (HAVE_UNISTD_H) -# include -#endif /* HAVE_UNISTD_H */ - -#if defined (HAVE_STDLIB_H) -# include -#else -# include "ansi_stdlib.h" -#endif /* HAVE_STDLIB_H */ - -#if defined (HAVE_LOCALE_H) -# include -#endif - -#include - -/* System-specific feature definitions and include files. */ -#include "rldefs.h" -#include "rlmbutil.h" - -/* Some standard library routines. */ -#include "readline.h" -#include "history.h" - -#include "rlprivate.h" -#include "rlshell.h" -#include "xmalloc.h" - -static int rl_digit_loop PARAMS((void)); -static void _rl_history_set_point PARAMS((void)); - -extern int history_offset; - -/* Forward declarations used in this file */ -void _rl_free_history_entry PARAMS((HIST_ENTRY *)); - -/* If non-zero, rl_get_previous_history and rl_get_next_history attempt - to preserve the value of rl_point from line to line. */ -int _rl_history_preserve_point = 0; - -_rl_arg_cxt _rl_argcxt; - -/* Saved target point for when _rl_history_preserve_point is set. Special - value of -1 means that point is at the end of the line. */ -int _rl_history_saved_point = -1; - -/* **************************************************************** */ -/* */ -/* Numeric Arguments */ -/* */ -/* **************************************************************** */ - -int -_rl_arg_overflow () -{ - if (rl_numeric_arg > 1000000) - { - _rl_argcxt = 0; - rl_explicit_arg = rl_numeric_arg = 0; - rl_ding (); - rl_restore_prompt (); - rl_clear_message (); - RL_UNSETSTATE(RL_STATE_NUMERICARG); - return 1; - } - return 0; -} - -void -_rl_arg_init () -{ - rl_save_prompt (); - _rl_argcxt = 0; - RL_SETSTATE(RL_STATE_NUMERICARG); -} - -int -_rl_arg_getchar () -{ - int c; - - rl_message ("(arg: %d) ", rl_arg_sign * rl_numeric_arg); - RL_SETSTATE(RL_STATE_MOREINPUT); - c = rl_read_key (); - RL_UNSETSTATE(RL_STATE_MOREINPUT); - - return c; -} - -/* Process C as part of the current numeric argument. Return -1 if the - argument should be aborted, 0 if we should not read any more chars, and - 1 if we should continue to read chars. */ -int -_rl_arg_dispatch (cxt, c) - _rl_arg_cxt cxt; - int c; -{ - int key, r; - - key = c; - - /* If we see a key bound to `universal-argument' after seeing digits, - it ends the argument but is otherwise ignored. */ - if (_rl_keymap[c].type == ISFUNC && _rl_keymap[c].function == rl_universal_argument) - { - if ((cxt & NUM_SAWDIGITS) == 0) - { - rl_numeric_arg *= 4; - return 1; - } - else if (RL_ISSTATE (RL_STATE_CALLBACK)) - { - _rl_argcxt |= NUM_READONE; - return 0; /* XXX */ - } - else - { - RL_SETSTATE(RL_STATE_MOREINPUT); - key = rl_read_key (); - RL_UNSETSTATE(RL_STATE_MOREINPUT); - rl_restore_prompt (); - rl_clear_message (); - RL_UNSETSTATE(RL_STATE_NUMERICARG); - if (key < 0) - return -1; - return (_rl_dispatch (key, _rl_keymap)); - } - } - - c = UNMETA (c); - - if (_rl_digit_p (c)) - { - r = _rl_digit_value (c); - rl_numeric_arg = rl_explicit_arg ? (rl_numeric_arg * 10) + r : r; - rl_explicit_arg = 1; - _rl_argcxt |= NUM_SAWDIGITS; - } - else if (c == '-' && rl_explicit_arg == 0) - { - rl_numeric_arg = 1; - _rl_argcxt |= NUM_SAWMINUS; - rl_arg_sign = -1; - } - else - { - /* Make M-- command equivalent to M--1 command. */ - if ((_rl_argcxt & NUM_SAWMINUS) && rl_numeric_arg == 1 && rl_explicit_arg == 0) - rl_explicit_arg = 1; - rl_restore_prompt (); - rl_clear_message (); - RL_UNSETSTATE(RL_STATE_NUMERICARG); - - r = _rl_dispatch (key, _rl_keymap); - if (RL_ISSTATE (RL_STATE_CALLBACK)) - { - /* At worst, this will cause an extra redisplay. Otherwise, - we have to wait until the next character comes in. */ - if (rl_done == 0) - (*rl_redisplay_function) (); - r = 0; - } - return r; - } - - return 1; -} - -/* Handle C-u style numeric args, as well as M--, and M-digits. */ -static int -rl_digit_loop () -{ - int c, r; - - while (1) - { - if (_rl_arg_overflow ()) - return 1; - - c = _rl_arg_getchar (); - - if (c < 0) - { - _rl_abort_internal (); - return -1; - } - - r = _rl_arg_dispatch (_rl_argcxt, c); - if (r <= 0 || (RL_ISSTATE (RL_STATE_NUMERICARG) == 0)) - break; - } - - return r; -} - -/* Create a default argument. */ -void -_rl_reset_argument () -{ - rl_numeric_arg = rl_arg_sign = 1; - rl_explicit_arg = 0; - _rl_argcxt = 0; -} - -/* Start a numeric argument with initial value KEY */ -int -rl_digit_argument (ignore, key) - int ignore, key; -{ - _rl_arg_init (); - if (RL_ISSTATE (RL_STATE_CALLBACK)) - { - _rl_arg_dispatch (_rl_argcxt, key); - rl_message ("(arg: %d) ", rl_arg_sign * rl_numeric_arg); - return 0; - } - else - { - rl_execute_next (key); - return (rl_digit_loop ()); - } -} - -/* C-u, universal argument. Multiply the current argument by 4. - Read a key. If the key has nothing to do with arguments, then - dispatch on it. If the key is the abort character then abort. */ -int -rl_universal_argument (count, key) - int count, key; -{ - _rl_arg_init (); - rl_numeric_arg *= 4; - - return (RL_ISSTATE (RL_STATE_CALLBACK) ? 0 : rl_digit_loop ()); -} - -int -_rl_arg_callback (cxt) - _rl_arg_cxt cxt; -{ - int c, r; - - c = _rl_arg_getchar (); - - if (_rl_argcxt & NUM_READONE) - { - _rl_argcxt &= ~NUM_READONE; - rl_restore_prompt (); - rl_clear_message (); - RL_UNSETSTATE(RL_STATE_NUMERICARG); - rl_execute_next (c); - return 0; - } - - r = _rl_arg_dispatch (cxt, c); - return (r != 1); -} - -/* What to do when you abort reading an argument. */ -int -rl_discard_argument () -{ - rl_ding (); - rl_clear_message (); - _rl_reset_argument (); - - return 0; -} - -/* **************************************************************** */ -/* */ -/* History Utilities */ -/* */ -/* **************************************************************** */ - -/* We already have a history library, and that is what we use to control - the history features of readline. This is our local interface to - the history mechanism. */ - -/* While we are editing the history, this is the saved - version of the original line. */ -HIST_ENTRY *_rl_saved_line_for_history = (HIST_ENTRY *)NULL; - -/* Set the history pointer back to the last entry in the history. */ -void -_rl_start_using_history () -{ - using_history (); - if (_rl_saved_line_for_history) - _rl_free_history_entry (_rl_saved_line_for_history); - - _rl_saved_line_for_history = (HIST_ENTRY *)NULL; -} - -/* Free the contents (and containing structure) of a HIST_ENTRY. */ -void -_rl_free_history_entry (entry) - HIST_ENTRY *entry; -{ - if (entry == 0) - return; - - FREE (entry->line); - FREE (entry->timestamp); - - xfree (entry); -} - -/* Perhaps put back the current line if it has changed. */ -int -rl_maybe_replace_line () -{ - HIST_ENTRY *temp; - - temp = current_history (); - /* If the current line has changed, save the changes. */ - if (temp && ((UNDO_LIST *)(temp->data) != rl_undo_list)) - { - temp = replace_history_entry (where_history (), rl_line_buffer, (histdata_t)rl_undo_list); - xfree (temp->line); - FREE (temp->timestamp); - xfree (temp); - } - return 0; -} - -/* Restore the _rl_saved_line_for_history if there is one. */ -int -rl_maybe_unsave_line () -{ - if (_rl_saved_line_for_history) - { - /* Can't call with `1' because rl_undo_list might point to an undo - list from a history entry, as in rl_replace_from_history() below. */ - rl_replace_line (_rl_saved_line_for_history->line, 0); - rl_undo_list = (UNDO_LIST *)_rl_saved_line_for_history->data; - _rl_free_history_entry (_rl_saved_line_for_history); - _rl_saved_line_for_history = (HIST_ENTRY *)NULL; - rl_point = rl_end; /* rl_replace_line sets rl_end */ - } - else - rl_ding (); - return 0; -} - -/* Save the current line in _rl_saved_line_for_history. */ -int -rl_maybe_save_line () -{ - if (_rl_saved_line_for_history == 0) - { - _rl_saved_line_for_history = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY)); - _rl_saved_line_for_history->line = savestring (rl_line_buffer); - _rl_saved_line_for_history->timestamp = (char *)NULL; - _rl_saved_line_for_history->data = (char *)rl_undo_list; - } - - return 0; -} - -int -_rl_free_saved_history_line () -{ - if (_rl_saved_line_for_history) - { - _rl_free_history_entry (_rl_saved_line_for_history); - _rl_saved_line_for_history = (HIST_ENTRY *)NULL; - } - return 0; -} - -static void -_rl_history_set_point () -{ - rl_point = (_rl_history_preserve_point && _rl_history_saved_point != -1) - ? _rl_history_saved_point - : rl_end; - if (rl_point > rl_end) - rl_point = rl_end; - -#if defined (VI_MODE) - if (rl_editing_mode == vi_mode && _rl_keymap != vi_insertion_keymap) - rl_point = 0; -#endif /* VI_MODE */ - - if (rl_editing_mode == emacs_mode) - rl_mark = (rl_point == rl_end ? 0 : rl_end); -} - -void -rl_replace_from_history (entry, flags) - HIST_ENTRY *entry; - int flags; /* currently unused */ -{ - /* Can't call with `1' because rl_undo_list might point to an undo list - from a history entry, just like we're setting up here. */ - rl_replace_line (entry->line, 0); - rl_undo_list = (UNDO_LIST *)entry->data; - rl_point = rl_end; - rl_mark = 0; - -#if defined (VI_MODE) - if (rl_editing_mode == vi_mode) - { - rl_point = 0; - rl_mark = rl_end; - } -#endif -} - -/* Process and free undo lists attached to each history entry prior to the - current entry, inclusive, reverting each line to its saved state. This - is destructive, and state about the current line is lost. This is not - intended to be called while actively editing, and the current line is - not assumed to have been added to the history list. */ -void -_rl_revert_all_lines () -{ - int hpos; - HIST_ENTRY *entry; - UNDO_LIST *ul, *saved_undo_list; - char *lbuf; - - lbuf = savestring (rl_line_buffer); - saved_undo_list = rl_undo_list; - hpos = where_history (); - - entry = (hpos == history_length) ? previous_history () : current_history (); - while (entry) - { - if (ul = (UNDO_LIST *)entry->data) - { - if (ul == saved_undo_list) - saved_undo_list = 0; - /* Set up rl_line_buffer and other variables from history entry */ - rl_replace_from_history (entry, 0); /* entry->line is now current */ - /* Undo all changes to this history entry */ - while (rl_undo_list) - rl_do_undo (); - /* And copy the reverted line back to the history entry, preserving - the timestamp. */ - FREE (entry->line); - entry->line = savestring (rl_line_buffer); - entry->data = 0; - } - entry = previous_history (); - } - - /* Restore history state */ - rl_undo_list = saved_undo_list; /* may have been set to null */ - history_set_pos (hpos); - - /* reset the line buffer */ - rl_replace_line (lbuf, 0); - _rl_set_the_line (); - - /* and clean up */ - xfree (lbuf); -} - -/* Free the history list, including private readline data and take care - of pointer aliases to history data. Resets rl_undo_list if it points - to an UNDO_LIST * saved as some history entry's data member. This - should not be called while editing is active. */ -void -rl_clear_history () -{ - HIST_ENTRY **hlist, *hent; - register int i; - UNDO_LIST *ul, *saved_undo_list; - - saved_undo_list = rl_undo_list; - hlist = history_list (); /* direct pointer, not copy */ - - for (i = 0; i < history_length; i++) - { - hent = hlist[i]; - if (ul = (UNDO_LIST *)hent->data) - { - if (ul == saved_undo_list) - saved_undo_list = 0; - _rl_free_undo_list (ul); - hent->data = 0; - } - _rl_free_history_entry (hent); - } - - history_offset = history_length = 0; - rl_undo_list = saved_undo_list; /* should be NULL */ -} - -/* **************************************************************** */ -/* */ -/* History Commands */ -/* */ -/* **************************************************************** */ - -/* Meta-< goes to the start of the history. */ -int -rl_beginning_of_history (count, key) - int count, key; -{ - return (rl_get_previous_history (1 + where_history (), key)); -} - -/* Meta-> goes to the end of the history. (The current line). */ -int -rl_end_of_history (count, key) - int count, key; -{ - rl_maybe_replace_line (); - using_history (); - rl_maybe_unsave_line (); - return 0; -} - -/* Move down to the next history line. */ -int -rl_get_next_history (count, key) - int count, key; -{ - HIST_ENTRY *temp; - - if (count < 0) - return (rl_get_previous_history (-count, key)); - - if (count == 0) - return 0; - - rl_maybe_replace_line (); - - /* either not saved by rl_newline or at end of line, so set appropriately. */ - if (_rl_history_saved_point == -1 && (rl_point || rl_end)) - _rl_history_saved_point = (rl_point == rl_end) ? -1 : rl_point; - - temp = (HIST_ENTRY *)NULL; - while (count) - { - temp = next_history (); - if (!temp) - break; - --count; - } - - if (temp == 0) - rl_maybe_unsave_line (); - else - { - rl_replace_from_history (temp, 0); - _rl_history_set_point (); - } - return 0; -} - -/* Get the previous item out of our interactive history, making it the current - line. If there is no previous history, just ding. */ -int -rl_get_previous_history (count, key) - int count, key; -{ - HIST_ENTRY *old_temp, *temp; - - if (count < 0) - return (rl_get_next_history (-count, key)); - - if (count == 0) - return 0; - - /* either not saved by rl_newline or at end of line, so set appropriately. */ - if (_rl_history_saved_point == -1 && (rl_point || rl_end)) - _rl_history_saved_point = (rl_point == rl_end) ? -1 : rl_point; - - /* If we don't have a line saved, then save this one. */ - rl_maybe_save_line (); - - /* If the current line has changed, save the changes. */ - rl_maybe_replace_line (); - - temp = old_temp = (HIST_ENTRY *)NULL; - while (count) - { - temp = previous_history (); - if (temp == 0) - break; - - old_temp = temp; - --count; - } - - /* If there was a large argument, and we moved back to the start of the - history, that is not an error. So use the last value found. */ - if (!temp && old_temp) - temp = old_temp; - - if (temp == 0) - rl_ding (); - else - { - rl_replace_from_history (temp, 0); - _rl_history_set_point (); - } - - return 0; -} - -/* **************************************************************** */ -/* */ -/* Editing Modes */ -/* */ -/* **************************************************************** */ -/* How to toggle back and forth between editing modes. */ -int -rl_vi_editing_mode (count, key) - int count, key; -{ -#if defined (VI_MODE) - _rl_set_insert_mode (RL_IM_INSERT, 1); /* vi mode ignores insert mode */ - rl_editing_mode = vi_mode; - rl_vi_insert_mode (1, key); -#endif /* VI_MODE */ - - return 0; -} - -int -rl_emacs_editing_mode (count, key) - int count, key; -{ - rl_editing_mode = emacs_mode; - _rl_set_insert_mode (RL_IM_INSERT, 1); /* emacs mode default is insert mode */ - _rl_keymap = emacs_standard_keymap; - return 0; -} - -/* Function for the rest of the library to use to set insert/overwrite mode. */ -void -_rl_set_insert_mode (im, force) - int im, force; -{ -#ifdef CURSOR_MODE - _rl_set_cursor (im, force); -#endif - - rl_insert_mode = im; -} - -/* Toggle overwrite mode. A positive explicit argument selects overwrite - mode. A negative or zero explicit argument selects insert mode. */ -int -rl_overwrite_mode (count, key) - int count, key; -{ - if (rl_explicit_arg == 0) - _rl_set_insert_mode (rl_insert_mode ^ 1, 0); - else if (count > 0) - _rl_set_insert_mode (RL_IM_OVERWRITE, 0); - else - _rl_set_insert_mode (RL_IM_INSERT, 0); - - return 0; -} diff --git a/lib/readline/readline.c~ b/lib/readline/readline.c~ deleted file mode 100644 index 9e034a36e..000000000 --- a/lib/readline/readline.c~ +++ /dev/null @@ -1,1314 +0,0 @@ -/* readline.c -- a general facility for reading lines of input - with emacs style editing and completion. */ - -/* Copyright (C) 1987-2012 Free Software Foundation, Inc. - - This file is part of the GNU Readline Library (Readline), a library - for reading lines of text with interactive input and history editing. - - Readline is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Readline is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Readline. If not, see . -*/ - -#define READLINE_LIBRARY - -#if defined (HAVE_CONFIG_H) -# include -#endif - -#include -#include "posixstat.h" -#include -#if defined (HAVE_SYS_FILE_H) -# include -#endif /* HAVE_SYS_FILE_H */ - -#if defined (HAVE_UNISTD_H) -# include -#endif /* HAVE_UNISTD_H */ - -#if defined (HAVE_STDLIB_H) -# include -#else -# include "ansi_stdlib.h" -#endif /* HAVE_STDLIB_H */ - -#if defined (HAVE_LOCALE_H) -# include -#endif - -#include -#include "posixjmp.h" -#include - -#if !defined (errno) -extern int errno; -#endif /* !errno */ - -/* System-specific feature definitions and include files. */ -#include "rldefs.h" -#include "rlmbutil.h" - -#if defined (__EMX__) -# define INCL_DOSPROCESS -# include -#endif /* __EMX__ */ - -/* Some standard library routines. */ -#include "readline.h" -#include "history.h" - -#include "rlprivate.h" -#include "rlshell.h" -#include "xmalloc.h" - -#ifndef RL_LIBRARY_VERSION -# define RL_LIBRARY_VERSION "5.1" -#endif - -#ifndef RL_READLINE_VERSION -# define RL_READLINE_VERSION 0x0501 -#endif - -extern void _rl_free_history_entry PARAMS((HIST_ENTRY *)); - -/* Forward declarations used in this file. */ -static char *readline_internal PARAMS((void)); -static void readline_initialize_everything PARAMS((void)); - -static void bind_arrow_keys_internal PARAMS((Keymap)); -static void bind_arrow_keys PARAMS((void)); - -static void readline_default_bindings PARAMS((void)); -static void reset_default_bindings PARAMS((void)); - -static int _rl_subseq_result PARAMS((int, Keymap, int, int)); -static int _rl_subseq_getchar PARAMS((int)); - -/* **************************************************************** */ -/* */ -/* Line editing input utility */ -/* */ -/* **************************************************************** */ - -const char *rl_library_version = RL_LIBRARY_VERSION; - -int rl_readline_version = RL_READLINE_VERSION; - -/* True if this is `real' readline as opposed to some stub substitute. */ -int rl_gnu_readline_p = 1; - -/* A pointer to the keymap that is currently in use. - By default, it is the standard emacs keymap. */ -Keymap _rl_keymap = emacs_standard_keymap; - -/* The current style of editing. */ -int rl_editing_mode = emacs_mode; - -/* The current insert mode: input (the default) or overwrite */ -int rl_insert_mode = RL_IM_DEFAULT; - -/* Non-zero if we called this function from _rl_dispatch(). It's present - so functions can find out whether they were called from a key binding - or directly from an application. */ -int rl_dispatching; - -/* Non-zero if the previous command was a kill command. */ -int _rl_last_command_was_kill = 0; - -/* The current value of the numeric argument specified by the user. */ -int rl_numeric_arg = 1; - -/* Non-zero if an argument was typed. */ -int rl_explicit_arg = 0; - -/* Temporary value used while generating the argument. */ -int rl_arg_sign = 1; - -/* Non-zero means we have been called at least once before. */ -static int rl_initialized; - -#if 0 -/* If non-zero, this program is running in an EMACS buffer. */ -static int running_in_emacs; -#endif - -/* Flags word encapsulating the current readline state. */ -int rl_readline_state = RL_STATE_NONE; - -/* The current offset in the current input line. */ -int rl_point; - -/* Mark in the current input line. */ -int rl_mark; - -/* Length of the current input line. */ -int rl_end; - -/* Make this non-zero to return the current input_line. */ -int rl_done; - -/* The last function executed by readline. */ -rl_command_func_t *rl_last_func = (rl_command_func_t *)NULL; - -/* Top level environment for readline_internal (). */ -procenv_t _rl_top_level; - -/* The streams we interact with. */ -FILE *_rl_in_stream, *_rl_out_stream; - -/* The names of the streams that we do input and output to. */ -FILE *rl_instream = (FILE *)NULL; -FILE *rl_outstream = (FILE *)NULL; - -/* Non-zero means echo characters as they are read. Defaults to no echo; - set to 1 if there is a controlling terminal, we can get its attributes, - and the attributes include `echo'. Look at rltty.c:prepare_terminal_settings - for the code that sets it. */ -int _rl_echoing_p = 0; - -/* Current prompt. */ -char *rl_prompt = (char *)NULL; -int rl_visible_prompt_length = 0; - -/* Set to non-zero by calling application if it has already printed rl_prompt - and does not want readline to do it the first time. */ -int rl_already_prompted = 0; - -/* The number of characters read in order to type this complete command. */ -int rl_key_sequence_length = 0; - -/* If non-zero, then this is the address of a function to call just - before readline_internal_setup () prints the first prompt. */ -rl_hook_func_t *rl_startup_hook = (rl_hook_func_t *)NULL; - -/* If non-zero, this is the address of a function to call just before - readline_internal_setup () returns and readline_internal starts - reading input characters. */ -rl_hook_func_t *rl_pre_input_hook = (rl_hook_func_t *)NULL; - -/* What we use internally. You should always refer to RL_LINE_BUFFER. */ -static char *the_line; - -/* The character that can generate an EOF. Really read from - the terminal driver... just defaulted here. */ -int _rl_eof_char = CTRL ('D'); - -/* Non-zero makes this the next keystroke to read. */ -int rl_pending_input = 0; - -/* Pointer to a useful terminal name. */ -const char *rl_terminal_name = (const char *)NULL; - -/* Non-zero means to always use horizontal scrolling in line display. */ -int _rl_horizontal_scroll_mode = 0; - -/* Non-zero means to display an asterisk at the starts of history lines - which have been modified. */ -int _rl_mark_modified_lines = 0; - -/* The style of `bell' notification preferred. This can be set to NO_BELL, - AUDIBLE_BELL, or VISIBLE_BELL. */ -int _rl_bell_preference = AUDIBLE_BELL; - -/* String inserted into the line by rl_insert_comment (). */ -char *_rl_comment_begin; - -/* Keymap holding the function currently being executed. */ -Keymap rl_executing_keymap; - -/* Keymap we're currently using to dispatch. */ -Keymap _rl_dispatching_keymap; - -/* Non-zero means to erase entire line, including prompt, on empty input lines. */ -int rl_erase_empty_line = 0; - -/* Non-zero means to read only this many characters rather than up to a - character bound to accept-line. */ -int rl_num_chars_to_read; - -/* Line buffer and maintenence. */ -char *rl_line_buffer = (char *)NULL; -int rl_line_buffer_len = 0; - -/* Key sequence `contexts' */ -_rl_keyseq_cxt *_rl_kscxt = 0; - -int rl_executing_key; -char *rl_executing_keyseq = 0; -int _rl_executing_keyseq_size = 0; - -/* Timeout (specified in milliseconds) when reading characters making up an - ambiguous multiple-key sequence */ -int _rl_keyseq_timeout = 500; - -#define RESIZE_KEYSEQ_BUFFER() \ - do \ - { \ - if (rl_key_sequence_length + 2 >= _rl_executing_keyseq_size) \ - { \ - _rl_executing_keyseq_size += 16; \ - rl_executing_keyseq = xrealloc (rl_executing_keyseq, _rl_executing_keyseq_size); \ - } \ - } \ - while (0); - -/* Forward declarations used by the display, termcap, and history code. */ - -/* **************************************************************** */ -/* */ -/* `Forward' declarations */ -/* */ -/* **************************************************************** */ - -/* Non-zero means do not parse any lines other than comments and - parser directives. */ -unsigned char _rl_parsing_conditionalized_out = 0; - -/* Non-zero means to convert characters with the meta bit set to - escape-prefixed characters so we can indirect through - emacs_meta_keymap or vi_escape_keymap. */ -int _rl_convert_meta_chars_to_ascii = 1; - -/* Non-zero means to output characters with the meta bit set directly - rather than as a meta-prefixed escape sequence. */ -int _rl_output_meta_chars = 0; - -/* Non-zero means to look at the termios special characters and bind - them to equivalent readline functions at startup. */ -int _rl_bind_stty_chars = 1; - -/* Non-zero means to go through the history list at every newline (or - whenever rl_done is set and readline returns) and revert each line to - its initial state. */ -int _rl_revert_all_at_newline = 0; - -/* Non-zero means to honor the termios ECHOCTL bit and echo control - characters corresponding to keyboard-generated signals. */ -int _rl_echo_control_chars = 1; - -/* **************************************************************** */ -/* */ -/* Top Level Functions */ -/* */ -/* **************************************************************** */ - -/* Non-zero means treat 0200 bit in terminal input as Meta bit. */ -int _rl_meta_flag = 0; /* Forward declaration */ - -/* Set up the prompt and expand it. Called from readline() and - rl_callback_handler_install (). */ -int -rl_set_prompt (prompt) - const char *prompt; -{ - FREE (rl_prompt); - rl_prompt = prompt ? savestring (prompt) : (char *)NULL; - rl_display_prompt = rl_prompt ? rl_prompt : ""; - - rl_visible_prompt_length = rl_expand_prompt (rl_prompt); - return 0; -} - -/* Read a line of input. Prompt with PROMPT. An empty PROMPT means - none. A return value of NULL means that EOF was encountered. */ -char * -readline (prompt) - const char *prompt; -{ - char *value; -#if 0 - int in_callback; -#endif - - /* If we are at EOF return a NULL string. */ - if (rl_pending_input == EOF) - { - rl_clear_pending_input (); - return ((char *)NULL); - } - -#if 0 - /* If readline() is called after installing a callback handler, temporarily - turn off the callback state to avoid ensuing messiness. Patch supplied - by the gdb folks. XXX -- disabled. This can be fooled and readline - left in a strange state by a poorly-timed longjmp. */ - if (in_callback = RL_ISSTATE (RL_STATE_CALLBACK)) - RL_UNSETSTATE (RL_STATE_CALLBACK); -#endif - - rl_set_prompt (prompt); - - rl_initialize (); - if (rl_prep_term_function) - (*rl_prep_term_function) (_rl_meta_flag); - -#if defined (HANDLE_SIGNALS) - rl_set_signals (); -#endif - - value = readline_internal (); - if (rl_deprep_term_function) - (*rl_deprep_term_function) (); - -#if defined (HANDLE_SIGNALS) - rl_clear_signals (); -#endif - -#if 0 - if (in_callback) - RL_SETSTATE (RL_STATE_CALLBACK); -#endif - -#if HAVE_DECL_AUDIT_TTY && defined (ENABLE_TTY_AUDIT_SUPPORT) - if (value) - _rl_audit_tty (value); -#endif - - return (value); -} - -#if defined (READLINE_CALLBACKS) -# define STATIC_CALLBACK -#else -# define STATIC_CALLBACK static -#endif - -STATIC_CALLBACK void -readline_internal_setup () -{ - char *nprompt; - - _rl_in_stream = rl_instream; - _rl_out_stream = rl_outstream; - - /* Enable the meta key only for the duration of readline(), if this - terminal has one. */ - if (_rl_enable_meta) - _rl_enable_meta_key (); - - if (rl_startup_hook) - (*rl_startup_hook) (); - - /* If we're not echoing, we still want to at least print a prompt, because - rl_redisplay will not do it for us. If the calling application has a - custom redisplay function, though, let that function handle it. */ - if (_rl_echoing_p == 0 && rl_redisplay_function == rl_redisplay) - { - if (rl_prompt && rl_already_prompted == 0) - { - nprompt = _rl_strip_prompt (rl_prompt); - fprintf (_rl_out_stream, "%s", nprompt); - fflush (_rl_out_stream); - xfree (nprompt); - } - } - else - { - if (rl_prompt && rl_already_prompted) - rl_on_new_line_with_prompt (); - else - rl_on_new_line (); - (*rl_redisplay_function) (); - } - -#if defined (VI_MODE) - if (rl_editing_mode == vi_mode) - rl_vi_insert_mode (1, 'i'); -#endif /* VI_MODE */ - - if (rl_pre_input_hook) - (*rl_pre_input_hook) (); - - RL_CHECK_SIGNALS (); -} - -STATIC_CALLBACK char * -readline_internal_teardown (eof) - int eof; -{ - char *temp; - HIST_ENTRY *entry; - - RL_CHECK_SIGNALS (); - - /* Restore the original of this history line, iff the line that we - are editing was originally in the history, AND the line has changed. */ - entry = current_history (); - - if (entry && rl_undo_list) - { - temp = savestring (the_line); - rl_revert_line (1, 0); - entry = replace_history_entry (where_history (), the_line, (histdata_t)NULL); - _rl_free_history_entry (entry); - - strcpy (the_line, temp); - xfree (temp); - } - - if (_rl_revert_all_at_newline) - _rl_revert_all_lines (); - - /* At any rate, it is highly likely that this line has an undo list. Get - rid of it now. */ - if (rl_undo_list) - rl_free_undo_list (); - - /* Disable the meta key, if this terminal has one. */ - _rl_disable_meta_key (); - - /* Restore normal cursor, if available. */ - _rl_set_insert_mode (RL_IM_INSERT, 0); - - return (eof ? (char *)NULL : savestring (the_line)); -} - -void -_rl_internal_char_cleanup () -{ -#if defined (VI_MODE) - /* In vi mode, when you exit insert mode, the cursor moves back - over the previous character. We explicitly check for that here. */ - if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap) - rl_vi_check (); -#endif /* VI_MODE */ - - if (rl_num_chars_to_read && rl_end >= rl_num_chars_to_read) - { - (*rl_redisplay_function) (); - _rl_want_redisplay = 0; - rl_newline (1, '\n'); - } - - if (rl_done == 0) - { - (*rl_redisplay_function) (); - _rl_want_redisplay = 0; - } - - /* If the application writer has told us to erase the entire line if - the only character typed was something bound to rl_newline, do so. */ - if (rl_erase_empty_line && rl_done && rl_last_func == rl_newline && - rl_point == 0 && rl_end == 0) - _rl_erase_entire_line (); -} - -STATIC_CALLBACK int -#if defined (READLINE_CALLBACKS) -readline_internal_char () -#else -readline_internal_charloop () -#endif -{ - static int lastc, eof_found; - int c, code, lk; - - lastc = -1; - eof_found = 0; - -#if !defined (READLINE_CALLBACKS) - while (rl_done == 0) - { -#endif - lk = _rl_last_command_was_kill; - - code = setjmp (_rl_top_level); - - if (code) - { - (*rl_redisplay_function) (); - _rl_want_redisplay = 0; - /* If we get here, we're not being called from something dispatched - from _rl_callback_read_char(), which sets up its own value of - _rl_top_level (saving and restoring the old, of course), so - we can just return here. */ - if (RL_ISSTATE (RL_STATE_CALLBACK)) - return (0); - } - - if (rl_pending_input == 0) - { - /* Then initialize the argument and number of keys read. */ - _rl_reset_argument (); - rl_key_sequence_length = 0; - rl_executing_keyseq[0] = 0; - } - - RL_SETSTATE(RL_STATE_READCMD); - c = rl_read_key (); - RL_UNSETSTATE(RL_STATE_READCMD); - - /* look at input.c:rl_getc() for the circumstances under which this will - be returned; punt immediately on read error without converting it to - a newline. */ - if (c == READERR) - { -#if defined (READLINE_CALLBACKS) - RL_SETSTATE(RL_STATE_DONE); - return (rl_done = 1); -#else - eof_found = 1; - break; -#endif - } - - /* EOF typed to a non-blank line is a . */ - if (c == EOF && rl_end) - c = NEWLINE; - - /* The character _rl_eof_char typed to blank line, and not as the - previous character is interpreted as EOF. */ - if (((c == _rl_eof_char && lastc != c) || c == EOF) && !rl_end) - { -#if defined (READLINE_CALLBACKS) - RL_SETSTATE(RL_STATE_DONE); - return (rl_done = 1); -#else - eof_found = 1; - break; -#endif - } - - lastc = c; - _rl_dispatch ((unsigned char)c, _rl_keymap); - RL_CHECK_SIGNALS (); - - /* If there was no change in _rl_last_command_was_kill, then no kill - has taken place. Note that if input is pending we are reading - a prefix command, so nothing has changed yet. */ - if (rl_pending_input == 0 && lk == _rl_last_command_was_kill) - _rl_last_command_was_kill = 0; - - _rl_internal_char_cleanup (); - -#if defined (READLINE_CALLBACKS) - return 0; -#else - } - - return (eof_found); -#endif -} - -#if defined (READLINE_CALLBACKS) -static int -readline_internal_charloop () -{ - int eof = 1; - - while (rl_done == 0) - eof = readline_internal_char (); - return (eof); -} -#endif /* READLINE_CALLBACKS */ - -/* Read a line of input from the global rl_instream, doing output on - the global rl_outstream. - If rl_prompt is non-null, then that is our prompt. */ -static char * -readline_internal () -{ - int eof; - - readline_internal_setup (); - eof = readline_internal_charloop (); - return (readline_internal_teardown (eof)); -} - -void -_rl_init_line_state () -{ - rl_point = rl_end = rl_mark = 0; - the_line = rl_line_buffer; - the_line[0] = 0; -} - -void -_rl_set_the_line () -{ - the_line = rl_line_buffer; -} - -#if defined (READLINE_CALLBACKS) -_rl_keyseq_cxt * -_rl_keyseq_cxt_alloc () -{ - _rl_keyseq_cxt *cxt; - - cxt = (_rl_keyseq_cxt *)xmalloc (sizeof (_rl_keyseq_cxt)); - - cxt->flags = cxt->subseq_arg = cxt->subseq_retval = 0; - - cxt->okey = 0; - cxt->ocxt = _rl_kscxt; - cxt->childval = 42; /* sentinel value */ - - return cxt; -} - -void -_rl_keyseq_cxt_dispose (cxt) - _rl_keyseq_cxt *cxt; -{ - xfree (cxt); -} - -void -_rl_keyseq_chain_dispose () -{ - _rl_keyseq_cxt *cxt; - - while (_rl_kscxt) - { - cxt = _rl_kscxt; - _rl_kscxt = _rl_kscxt->ocxt; - _rl_keyseq_cxt_dispose (cxt); - } -} -#endif - -static int -_rl_subseq_getchar (key) - int key; -{ - int k; - - if (key == ESC) - RL_SETSTATE(RL_STATE_METANEXT); - RL_SETSTATE(RL_STATE_MOREINPUT); - k = rl_read_key (); - RL_UNSETSTATE(RL_STATE_MOREINPUT); - if (key == ESC) - RL_UNSETSTATE(RL_STATE_METANEXT); - - return k; -} - -#if defined (READLINE_CALLBACKS) -int -_rl_dispatch_callback (cxt) - _rl_keyseq_cxt *cxt; -{ - int nkey, r; - - /* For now */ - /* The first time this context is used, we want to read input and dispatch - on it. When traversing the chain of contexts back `up', we want to use - the value from the next context down. We're simulating recursion using - a chain of contexts. */ - if ((cxt->flags & KSEQ_DISPATCHED) == 0) - { - nkey = _rl_subseq_getchar (cxt->okey); - if (nkey < 0) - { - _rl_abort_internal (); - return -1; - } - r = _rl_dispatch_subseq (nkey, cxt->dmap, cxt->subseq_arg); - cxt->flags |= KSEQ_DISPATCHED; - } - else - r = cxt->childval; - - /* For now */ - if (r != -3) /* don't do this if we indicate there will be other matches */ - r = _rl_subseq_result (r, cxt->oldmap, cxt->okey, (cxt->flags & KSEQ_SUBSEQ)); - - RL_CHECK_SIGNALS (); - if (r == 0) /* success! */ - { - _rl_keyseq_chain_dispose (); - RL_UNSETSTATE (RL_STATE_MULTIKEY); - return r; - } - - if (r != -3) /* magic value that says we added to the chain */ - _rl_kscxt = cxt->ocxt; - if (_rl_kscxt) - _rl_kscxt->childval = r; - if (r != -3) - _rl_keyseq_cxt_dispose (cxt); - - return r; -} -#endif /* READLINE_CALLBACKS */ - -/* Do the command associated with KEY in MAP. - If the associated command is really a keymap, then read - another key, and dispatch into that map. */ -int -_rl_dispatch (key, map) - register int key; - Keymap map; -{ - _rl_dispatching_keymap = map; - return _rl_dispatch_subseq (key, map, 0); -} - -int -_rl_dispatch_subseq (key, map, got_subseq) - register int key; - Keymap map; - int got_subseq; -{ - int r, newkey; - char *macro; - rl_command_func_t *func; -#if defined (READLINE_CALLBACKS) - _rl_keyseq_cxt *cxt; -#endif - - if (META_CHAR (key) && _rl_convert_meta_chars_to_ascii) - { - if (map[ESC].type == ISKMAP) - { - if (RL_ISSTATE (RL_STATE_MACRODEF)) - _rl_add_macro_char (ESC); - RESIZE_KEYSEQ_BUFFER (); - rl_executing_keyseq[rl_key_sequence_length++] = ESC; - map = FUNCTION_TO_KEYMAP (map, ESC); - key = UNMETA (key); - return (_rl_dispatch (key, map)); - } - else - rl_ding (); - return 0; - } - - if (RL_ISSTATE (RL_STATE_MACRODEF)) - _rl_add_macro_char (key); - - r = 0; - switch (map[key].type) - { - case ISFUNC: - func = map[key].function; - if (func) - { - /* Special case rl_do_lowercase_version (). */ - if (func == rl_do_lowercase_version) - return (_rl_dispatch (_rl_to_lower (key), map)); - - rl_executing_keymap = map; - rl_executing_key = key; - - RESIZE_KEYSEQ_BUFFER(); - rl_executing_keyseq[rl_key_sequence_length++] = key; - rl_executing_keyseq[rl_key_sequence_length] = '\0'; - - rl_dispatching = 1; - RL_SETSTATE(RL_STATE_DISPATCHING); - (*func) (rl_numeric_arg * rl_arg_sign, key); - RL_UNSETSTATE(RL_STATE_DISPATCHING); - rl_dispatching = 0; - - /* If we have input pending, then the last command was a prefix - command. Don't change the state of rl_last_func. Otherwise, - remember the last command executed in this variable. */ - if (rl_pending_input == 0 && map[key].function != rl_digit_argument) - rl_last_func = map[key].function; - - RL_CHECK_SIGNALS (); - } - else if (map[ANYOTHERKEY].function) - { - /* OK, there's no function bound in this map, but there is a - shadow function that was overridden when the current keymap - was created. Return -2 to note that. */ - _rl_unget_char (key); - return -2; - } - else if (got_subseq) - { - /* Return -1 to note that we're in a subsequence, but we don't - have a matching key, nor was one overridden. This means - we need to back up the recursion chain and find the last - subsequence that is bound to a function. */ - _rl_unget_char (key); - return -1; - } - else - { -#if defined (READLINE_CALLBACKS) - RL_UNSETSTATE (RL_STATE_MULTIKEY); - _rl_keyseq_chain_dispose (); -#endif - _rl_abort_internal (); - return -1; - } - break; - - case ISKMAP: - if (map[key].function != 0) - { -#if defined (VI_MODE) - /* The only way this test will be true is if a subsequence has been - bound starting with ESC, generally the arrow keys. What we do is - check whether there's input in the queue, which there generally - will be if an arrow key has been pressed, and, if there's not, - just dispatch to (what we assume is) rl_vi_movement_mode right - away. This is essentially an input test with a zero timeout. */ - if (rl_editing_mode == vi_mode && key == ESC && map == vi_insertion_keymap - && _rl_input_queued (0) == 0) - return (_rl_dispatch (ANYOTHERKEY, FUNCTION_TO_KEYMAP (map, key))); -#endif - - RESIZE_KEYSEQ_BUFFER (); - rl_executing_keyseq[rl_key_sequence_length++] = key; - _rl_dispatching_keymap = FUNCTION_TO_KEYMAP (map, key); - - /* Allocate new context here. Use linked contexts (linked through - cxt->ocxt) to simulate recursion */ -#if defined (READLINE_CALLBACKS) - if (RL_ISSTATE (RL_STATE_CALLBACK)) - { - /* Return 0 only the first time, to indicate success to - _rl_callback_read_char. The rest of the time, we're called - from _rl_dispatch_callback, so we return -3 to indicate - special handling is necessary. */ - r = RL_ISSTATE (RL_STATE_MULTIKEY) ? -3 : 0; - cxt = _rl_keyseq_cxt_alloc (); - - if (got_subseq) - cxt->flags |= KSEQ_SUBSEQ; - cxt->okey = key; - cxt->oldmap = map; - cxt->dmap = _rl_dispatching_keymap; - cxt->subseq_arg = got_subseq || cxt->dmap[ANYOTHERKEY].function; - - RL_SETSTATE (RL_STATE_MULTIKEY); - _rl_kscxt = cxt; - - return r; /* don't indicate immediate success */ - } -#endif - - /* Tentative inter-character timeout for potential multi-key - sequences? If no input within timeout, abort sequence and - act as if we got non-matching input. */ - /* _rl_keyseq_timeout specified in milliseconds; _rl_input_queued - takes microseconds, so multiply by 1000 */ - if (_rl_keyseq_timeout > 0 && - ((rl_readline_state & (RL_STATE_INPUTPENDING|RL_STATE_MACROINPUT)) == 0) && - _rl_pushed_input_available () == 0 && - _rl_dispatching_keymap[ANYOTHERKEY].function && - _rl_input_queued (_rl_keyseq_timeout*1000) == 0) - return (_rl_subseq_result (-2, map, key, got_subseq)); - - newkey = _rl_subseq_getchar (key); - if (newkey < 0) - { - _rl_abort_internal (); - return -1; - } - - r = _rl_dispatch_subseq (newkey, _rl_dispatching_keymap, got_subseq || map[ANYOTHERKEY].function); - return _rl_subseq_result (r, map, key, got_subseq); - } - else - { - _rl_abort_internal (); - return -1; - } - break; - - case ISMACR: - if (map[key].function != 0) - { - rl_executing_keyseq[rl_key_sequence_length] = '\0'; - macro = savestring ((char *)map[key].function); - _rl_with_macro_input (macro); - return 0; - } - break; - } -#if defined (VI_MODE) - if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap && - key != ANYOTHERKEY && - _rl_vi_textmod_command (key)) - _rl_vi_set_last (key, rl_numeric_arg, rl_arg_sign); -#endif - - return (r); -} - -static int -_rl_subseq_result (r, map, key, got_subseq) - int r; - Keymap map; - int key, got_subseq; -{ - Keymap m; - int type, nt; - rl_command_func_t *func, *nf; - - if (r == -2) - /* We didn't match anything, and the keymap we're indexed into - shadowed a function previously bound to that prefix. Call - the function. The recursive call to _rl_dispatch_subseq has - already taken care of pushing any necessary input back onto - the input queue with _rl_unget_char. */ - { - m = _rl_dispatching_keymap; - type = m[ANYOTHERKEY].type; - func = m[ANYOTHERKEY].function; - if (type == ISFUNC && func == rl_do_lowercase_version) - r = _rl_dispatch (_rl_to_lower (key), map); - else if (type == ISFUNC && func == rl_insert) - { - /* If the function that was shadowed was self-insert, we - somehow need a keymap with map[key].func == self-insert. - Let's use this one. */ - nt = m[key].type; - nf = m[key].function; - - m[key].type = type; - m[key].function = func; - r = _rl_dispatch (key, m); - m[key].type = nt; - m[key].function = nf; - } - else - r = _rl_dispatch (ANYOTHERKEY, m); - } - else if (r && map[ANYOTHERKEY].function) - { - /* We didn't match (r is probably -1), so return something to - tell the caller that it should try ANYOTHERKEY for an - overridden function. */ - _rl_unget_char (key); - _rl_dispatching_keymap = map; - return -2; - } - else if (r && got_subseq) - { - /* OK, back up the chain. */ - _rl_unget_char (key); - _rl_dispatching_keymap = map; - return -1; - } - - return r; -} - -/* **************************************************************** */ -/* */ -/* Initializations */ -/* */ -/* **************************************************************** */ - -/* Initialize readline (and terminal if not already). */ -int -rl_initialize () -{ - /* If we have never been called before, initialize the - terminal and data structures. */ - if (!rl_initialized) - { - RL_SETSTATE(RL_STATE_INITIALIZING); - readline_initialize_everything (); - RL_UNSETSTATE(RL_STATE_INITIALIZING); - rl_initialized++; - RL_SETSTATE(RL_STATE_INITIALIZED); - } - - /* Initalize the current line information. */ - _rl_init_line_state (); - - /* We aren't done yet. We haven't even gotten started yet! */ - rl_done = 0; - RL_UNSETSTATE(RL_STATE_DONE); - - /* Tell the history routines what is going on. */ - _rl_start_using_history (); - - /* Make the display buffer match the state of the line. */ - rl_reset_line_state (); - - /* No such function typed yet. */ - rl_last_func = (rl_command_func_t *)NULL; - - /* Parsing of key-bindings begins in an enabled state. */ - _rl_parsing_conditionalized_out = 0; - -#if defined (VI_MODE) - if (rl_editing_mode == vi_mode) - _rl_vi_initialize_line (); -#endif - - /* Each line starts in insert mode (the default). */ - _rl_set_insert_mode (RL_IM_DEFAULT, 1); - - return 0; -} - -#if 0 -#if defined (__EMX__) -static void -_emx_build_environ () -{ - TIB *tibp; - PIB *pibp; - char *t, **tp; - int c; - - DosGetInfoBlocks (&tibp, &pibp); - t = pibp->pib_pchenv; - for (c = 1; *t; c++) - t += strlen (t) + 1; - tp = environ = (char **)xmalloc ((c + 1) * sizeof (char *)); - t = pibp->pib_pchenv; - while (*t) - { - *tp++ = t; - t += strlen (t) + 1; - } - *tp = 0; -} -#endif /* __EMX__ */ -#endif - -/* Initialize the entire state of the world. */ -static void -readline_initialize_everything () -{ -#if 0 -#if defined (__EMX__) - if (environ == 0) - _emx_build_environ (); -#endif -#endif - -#if 0 - /* Find out if we are running in Emacs -- UNUSED. */ - running_in_emacs = sh_get_env_value ("EMACS") != (char *)0; -#endif - - /* Set up input and output if they are not already set up. */ - if (!rl_instream) - rl_instream = stdin; - - if (!rl_outstream) - rl_outstream = stdout; - - /* Bind _rl_in_stream and _rl_out_stream immediately. These values - may change, but they may also be used before readline_internal () - is called. */ - _rl_in_stream = rl_instream; - _rl_out_stream = rl_outstream; - - /* Allocate data structures. */ - if (rl_line_buffer == 0) - rl_line_buffer = (char *)xmalloc (rl_line_buffer_len = DEFAULT_BUFFER_SIZE); - - /* Initialize the terminal interface. */ - if (rl_terminal_name == 0) - rl_terminal_name = sh_get_env_value ("TERM"); - _rl_init_terminal_io (rl_terminal_name); - - /* Bind tty characters to readline functions. */ - readline_default_bindings (); - - /* Initialize the function names. */ - rl_initialize_funmap (); - - /* Decide whether we should automatically go into eight-bit mode. */ - _rl_init_eightbit (); - - /* Read in the init file. */ - rl_read_init_file ((char *)NULL); - - /* XXX */ - if (_rl_horizontal_scroll_mode && _rl_term_autowrap) - { - _rl_screenwidth--; - _rl_screenchars -= _rl_screenheight; - } - - /* Override the effect of any `set keymap' assignments in the - inputrc file. */ - rl_set_keymap_from_edit_mode (); - - /* Try to bind a common arrow key prefix, if not already bound. */ - bind_arrow_keys (); - - /* If the completion parser's default word break characters haven't - been set yet, then do so now. */ - if (rl_completer_word_break_characters == (char *)NULL) - rl_completer_word_break_characters = (char *)rl_basic_word_break_characters; - -#if defined (COLOR_SUPPORT) - if (_rl_colored_stats) - _rl_parse_colors (); -#endif - - rl_executing_keyseq = malloc (_rl_executing_keyseq_size = 16); - if (rl_executing_keyseq) - rl_executing_keyseq[0] = '\0'; -} - -/* If this system allows us to look at the values of the regular - input editing characters, then bind them to their readline - equivalents, iff the characters are not bound to keymaps. */ -static void -readline_default_bindings () -{ - if (_rl_bind_stty_chars) - rl_tty_set_default_bindings (_rl_keymap); -} - -/* Reset the default bindings for the terminal special characters we're - interested in back to rl_insert and read the new ones. */ -static void -reset_default_bindings () -{ - if (_rl_bind_stty_chars) - { - rl_tty_unset_default_bindings (_rl_keymap); - rl_tty_set_default_bindings (_rl_keymap); - } -} - -/* Bind some common arrow key sequences in MAP. */ -static void -bind_arrow_keys_internal (map) - Keymap map; -{ - Keymap xkeymap; - - xkeymap = _rl_keymap; - _rl_keymap = map; - -#if defined (__MSDOS__) - rl_bind_keyseq_if_unbound ("\033[0A", rl_get_previous_history); - rl_bind_keyseq_if_unbound ("\033[0B", rl_backward_char); - rl_bind_keyseq_if_unbound ("\033[0C", rl_forward_char); - rl_bind_keyseq_if_unbound ("\033[0D", rl_get_next_history); -#endif - - rl_bind_keyseq_if_unbound ("\033[A", rl_get_previous_history); - rl_bind_keyseq_if_unbound ("\033[B", rl_get_next_history); - rl_bind_keyseq_if_unbound ("\033[C", rl_forward_char); - rl_bind_keyseq_if_unbound ("\033[D", rl_backward_char); - rl_bind_keyseq_if_unbound ("\033[H", rl_beg_of_line); - rl_bind_keyseq_if_unbound ("\033[F", rl_end_of_line); - - rl_bind_keyseq_if_unbound ("\033OA", rl_get_previous_history); - rl_bind_keyseq_if_unbound ("\033OB", rl_get_next_history); - rl_bind_keyseq_if_unbound ("\033OC", rl_forward_char); - rl_bind_keyseq_if_unbound ("\033OD", rl_backward_char); - rl_bind_keyseq_if_unbound ("\033OH", rl_beg_of_line); - rl_bind_keyseq_if_unbound ("\033OF", rl_end_of_line); - -#if defined (__MINGW32__) - rl_bind_keyseq_if_unbound ("\340H", rl_get_previous_history); - rl_bind_keyseq_if_unbound ("\340P", rl_get_next_history); - rl_bind_keyseq_if_unbound ("\340M", rl_forward_char); - rl_bind_keyseq_if_unbound ("\340K", rl_backward_char); -#endif - - _rl_keymap = xkeymap; -} - -/* Try and bind the common arrow key prefixes after giving termcap and - the inputrc file a chance to bind them and create `real' keymaps - for the arrow key prefix. */ -static void -bind_arrow_keys () -{ - bind_arrow_keys_internal (emacs_standard_keymap); - -#if defined (VI_MODE) - bind_arrow_keys_internal (vi_movement_keymap); - /* Unbind vi_movement_keymap[ESC] to allow users to repeatedly hit ESC - in vi command mode while still allowing the arrow keys to work. */ - if (vi_movement_keymap[ESC].type == ISKMAP) - rl_bind_keyseq_in_map ("\033", (rl_command_func_t *)NULL, vi_movement_keymap); - bind_arrow_keys_internal (vi_insertion_keymap); -#endif -} - -/* **************************************************************** */ -/* */ -/* Saving and Restoring Readline's state */ -/* */ -/* **************************************************************** */ - -int -rl_save_state (sp) - struct readline_state *sp; -{ - if (sp == 0) - return -1; - - sp->point = rl_point; - sp->end = rl_end; - sp->mark = rl_mark; - sp->buffer = rl_line_buffer; - sp->buflen = rl_line_buffer_len; - sp->ul = rl_undo_list; - sp->prompt = rl_prompt; - - sp->rlstate = rl_readline_state; - sp->done = rl_done; - sp->kmap = _rl_keymap; - - sp->lastfunc = rl_last_func; - sp->insmode = rl_insert_mode; - sp->edmode = rl_editing_mode; - sp->kseqlen = rl_key_sequence_length; - sp->inf = rl_instream; - sp->outf = rl_outstream; - sp->pendingin = rl_pending_input; - sp->macro = rl_executing_macro; - - sp->catchsigs = rl_catch_signals; - sp->catchsigwinch = rl_catch_sigwinch; - - return (0); -} - -int -rl_restore_state (sp) - struct readline_state *sp; -{ - if (sp == 0) - return -1; - - rl_point = sp->point; - rl_end = sp->end; - rl_mark = sp->mark; - the_line = rl_line_buffer = sp->buffer; - rl_line_buffer_len = sp->buflen; - rl_undo_list = sp->ul; - rl_prompt = sp->prompt; - - rl_readline_state = sp->rlstate; - rl_done = sp->done; - _rl_keymap = sp->kmap; - - rl_last_func = sp->lastfunc; - rl_insert_mode = sp->insmode; - rl_editing_mode = sp->edmode; - rl_key_sequence_length = sp->kseqlen; - rl_instream = sp->inf; - rl_outstream = sp->outf; - rl_pending_input = sp->pendingin; - rl_executing_macro = sp->macro; - - rl_catch_signals = sp->catchsigs; - rl_catch_sigwinch = sp->catchsigwinch; - - return (0); -} diff --git a/lib/readline/rlprivate.h~ b/lib/readline/rlprivate.h~ deleted file mode 100644 index fb89011cc..000000000 --- a/lib/readline/rlprivate.h~ +++ /dev/null @@ -1,528 +0,0 @@ -/* rlprivate.h -- functions and variables global to the readline library, - but not intended for use by applications. */ - -/* Copyright (C) 1999-2012 Free Software Foundation, Inc. - - This file is part of the GNU Readline Library (Readline), a library - for reading lines of text with interactive input and history editing. - - Readline is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Readline is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Readline. If not, see . -*/ - -#if !defined (_RL_PRIVATE_H_) -#define _RL_PRIVATE_H_ - -#include "rlconf.h" /* for VISIBLE_STATS */ -#include "rlstdc.h" -#include "posixjmp.h" /* defines procenv_t */ - -/************************************************************************* - * * - * Convenience definitions * - * * - *************************************************************************/ - -#define EMACS_MODE() (rl_editing_mode == emacs_mode) -#define VI_COMMAND_MODE() (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap) -#define VI_INSERT_MODE() (rl_editing_mode == vi_mode && _rl_keymap == vi_insertion_keymap) - -#define RL_CHECK_SIGNALS() \ - do { \ - if (_rl_caught_signal) _rl_signal_handler (_rl_caught_signal); \ - } while (0) - -#define RL_SIG_RECEIVED() (_rl_caught_signal != 0) -#define RL_SIGINT_RECEIVED() (_rl_caught_signal == SIGINT) - -/************************************************************************* - * * - * Global structs undocumented in texinfo manual and not in readline.h * - * * - *************************************************************************/ -/* search types */ -#define RL_SEARCH_ISEARCH 0x01 /* incremental search */ -#define RL_SEARCH_NSEARCH 0x02 /* non-incremental search */ -#define RL_SEARCH_CSEARCH 0x04 /* intra-line char search */ - -/* search flags */ -#define SF_REVERSE 0x01 -#define SF_FOUND 0x02 -#define SF_FAILED 0x04 -#define SF_CHGKMAP 0x08 - -typedef struct __rl_search_context -{ - int type; - int sflags; - - char *search_string; - int search_string_index; - int search_string_size; - - char **lines; - char *allocated_line; - int hlen; - int hindex; - - int save_point; - int save_mark; - int save_line; - int last_found_line; - char *prev_line_found; - - UNDO_LIST *save_undo_list; - - Keymap keymap; /* used when dispatching commands in search string */ - Keymap okeymap; /* original keymap */ - - int history_pos; - int direction; - - int prevc; - int lastc; -#if defined (HANDLE_MULTIBYTE) - char mb[MB_LEN_MAX]; - char pmb[MB_LEN_MAX]; -#endif - - char *sline; - int sline_len; - int sline_index; - - char *search_terminators; -} _rl_search_cxt; - -/* Callback data for reading numeric arguments */ -#define NUM_SAWMINUS 0x01 -#define NUM_SAWDIGITS 0x02 -#define NUM_READONE 0x04 - -typedef int _rl_arg_cxt; - -/* A context for reading key sequences longer than a single character when - using the callback interface. */ -#define KSEQ_DISPATCHED 0x01 -#define KSEQ_SUBSEQ 0x02 -#define KSEQ_RECURSIVE 0x04 - -typedef struct __rl_keyseq_context -{ - int flags; - int subseq_arg; - int subseq_retval; /* XXX */ - Keymap dmap; - - Keymap oldmap; - int okey; - struct __rl_keyseq_context *ocxt; - int childval; -} _rl_keyseq_cxt; - -/* vi-mode commands that use result of motion command to define boundaries */ -#define VIM_DELETE 0x01 -#define VIM_CHANGE 0x02 -#define VIM_YANK 0x04 - -/* various states for vi-mode commands that use motion commands. reflects - RL_READLINE_STATE */ -#define VMSTATE_READ 0x01 -#define VMSTATE_NUMARG 0x02 - -typedef struct __rl_vimotion_context -{ - int op; - int state; - int flags; /* reserved */ - _rl_arg_cxt ncxt; - int numeric_arg; - int start, end; /* rl_point, rl_end */ - int key, motion; /* initial key, motion command */ -} _rl_vimotion_cxt; - -/* fill in more as needed */ -/* `Generic' callback data and functions */ -typedef struct __rl_callback_generic_arg -{ - int count; - int i1, i2; - /* add here as needed */ -} _rl_callback_generic_arg; - -typedef int _rl_callback_func_t PARAMS((_rl_callback_generic_arg *)); - -typedef void _rl_sigcleanup_func_t PARAMS((int, void *)); - -/************************************************************************* - * * - * Global functions undocumented in texinfo manual and not in readline.h * - * * - *************************************************************************/ - -/************************************************************************* - * * - * Global variables undocumented in texinfo manual and not in readline.h * - * * - *************************************************************************/ - -/* complete.c */ -extern int rl_complete_with_tilde_expansion; -#if defined (VISIBLE_STATS) -extern int rl_visible_stats; -#endif /* VISIBLE_STATS */ -#if defined (COLOR_SUPPORT) -extern int _rl_colored_stats; -#endif - -/* readline.c */ -extern int rl_line_buffer_len; -extern int rl_arg_sign; -extern int rl_visible_prompt_length; -extern int rl_byte_oriented; - -/* display.c */ -extern int rl_display_fixed; - -/* parens.c */ -extern int rl_blink_matching_paren; - -/************************************************************************* - * * - * Global functions and variables unused and undocumented * - * * - *************************************************************************/ - -/* kill.c */ -extern int rl_set_retained_kills PARAMS((int)); - -/* terminal.c */ -extern void _rl_set_screen_size PARAMS((int, int)); - -/* undo.c */ -extern int _rl_fix_last_undo_of_type PARAMS((int, int, int)); - -/* util.c */ -extern char *_rl_savestring PARAMS((const char *)); - -/************************************************************************* - * * - * Functions and variables private to the readline library * - * * - *************************************************************************/ - -/* NOTE: Functions and variables prefixed with `_rl_' are - pseudo-global: they are global so they can be shared - between files in the readline library, but are not intended - to be visible to readline callers. */ - -/************************************************************************* - * Undocumented private functions * - *************************************************************************/ - -#if defined(READLINE_CALLBACKS) - -/* readline.c */ -extern void readline_internal_setup PARAMS((void)); -extern char *readline_internal_teardown PARAMS((int)); -extern int readline_internal_char PARAMS((void)); - -extern _rl_keyseq_cxt *_rl_keyseq_cxt_alloc PARAMS((void)); -extern void _rl_keyseq_cxt_dispose PARAMS((_rl_keyseq_cxt *)); -extern void _rl_keyseq_chain_dispose PARAMS((void)); - -extern int _rl_dispatch_callback PARAMS((_rl_keyseq_cxt *)); - -/* callback.c */ -extern _rl_callback_generic_arg *_rl_callback_data_alloc PARAMS((int)); -extern void _rl_callback_data_dispose PARAMS((_rl_callback_generic_arg *)); - -#endif /* READLINE_CALLBACKS */ - -/* bind.c */ -extern char *_rl_untranslate_macro_value PARAMS((char *, int)); - -/* complete.c */ -extern void _rl_reset_completion_state PARAMS((void)); -extern char _rl_find_completion_word PARAMS((int *, int *)); -extern void _rl_free_match_list PARAMS((char **)); - -/* display.c */ -extern char *_rl_strip_prompt PARAMS((char *)); -extern void _rl_move_cursor_relative PARAMS((int, const char *)); -extern void _rl_move_vert PARAMS((int)); -extern void _rl_save_prompt PARAMS((void)); -extern void _rl_restore_prompt PARAMS((void)); -extern char *_rl_make_prompt_for_search PARAMS((int)); -extern void _rl_erase_at_end_of_line PARAMS((int)); -extern void _rl_clear_to_eol PARAMS((int)); -extern void _rl_clear_screen PARAMS((void)); -extern void _rl_update_final PARAMS((void)); -extern void _rl_redisplay_after_sigwinch PARAMS((void)); -extern void _rl_clean_up_for_exit PARAMS((void)); -extern void _rl_erase_entire_line PARAMS((void)); -extern int _rl_current_display_line PARAMS((void)); - -/* input.c */ -extern int _rl_any_typein PARAMS((void)); -extern int _rl_input_available PARAMS((void)); -extern int _rl_input_queued PARAMS((int)); -extern void _rl_insert_typein PARAMS((int)); -extern int _rl_unget_char PARAMS((int)); -extern int _rl_pushed_input_available PARAMS((void)); - -/* isearch.c */ -extern _rl_search_cxt *_rl_scxt_alloc PARAMS((int, int)); -extern void _rl_scxt_dispose PARAMS((_rl_search_cxt *, int)); - -extern int _rl_isearch_dispatch PARAMS((_rl_search_cxt *, int)); -extern int _rl_isearch_callback PARAMS((_rl_search_cxt *)); - -extern int _rl_search_getchar PARAMS((_rl_search_cxt *)); - -/* macro.c */ -extern void _rl_with_macro_input PARAMS((char *)); -extern int _rl_next_macro_key PARAMS((void)); -extern void _rl_push_executing_macro PARAMS((void)); -extern void _rl_pop_executing_macro PARAMS((void)); -extern void _rl_add_macro_char PARAMS((int)); -extern void _rl_kill_kbd_macro PARAMS((void)); - -/* misc.c */ -extern int _rl_arg_overflow PARAMS((void)); -extern void _rl_arg_init PARAMS((void)); -extern int _rl_arg_getchar PARAMS((void)); -extern int _rl_arg_callback PARAMS((_rl_arg_cxt)); -extern void _rl_reset_argument PARAMS((void)); - -extern void _rl_start_using_history PARAMS((void)); -extern int _rl_free_saved_history_line PARAMS((void)); -extern void _rl_set_insert_mode PARAMS((int, int)); - -extern void _rl_revert_all_lines PARAMS((void)); - -/* nls.c */ -extern int _rl_init_eightbit PARAMS((void)); - -/* parens.c */ -extern void _rl_enable_paren_matching PARAMS((int)); - -/* readline.c */ -extern void _rl_init_line_state PARAMS((void)); -extern void _rl_set_the_line PARAMS((void)); -extern int _rl_dispatch PARAMS((int, Keymap)); -extern int _rl_dispatch_subseq PARAMS((int, Keymap, int)); -extern void _rl_internal_char_cleanup PARAMS((void)); - -/* rltty.c */ -extern int _rl_disable_tty_signals PARAMS((void)); -extern int _rl_restore_tty_signals PARAMS((void)); - -/* search.c */ -extern int _rl_nsearch_callback PARAMS((_rl_search_cxt *)); - -/* signals.c */ -extern void _rl_signal_handler PARAMS((int)); - -extern void _rl_block_sigint PARAMS((void)); -extern void _rl_release_sigint PARAMS((void)); -extern void _rl_block_sigwinch PARAMS((void)); -extern void _rl_release_sigwinch PARAMS((void)); - -/* terminal.c */ -extern void _rl_get_screen_size PARAMS((int, int)); -extern void _rl_sigwinch_resize_terminal PARAMS((void)); -extern int _rl_init_terminal_io PARAMS((const char *)); -#ifdef _MINIX -extern void _rl_output_character_function PARAMS((int)); -#else -extern int _rl_output_character_function PARAMS((int)); -#endif -extern void _rl_output_some_chars PARAMS((const char *, int)); -extern int _rl_backspace PARAMS((int)); -extern void _rl_enable_meta_key PARAMS((void)); -extern void _rl_disable_meta_key PARAMS((void)); -extern void _rl_control_keypad PARAMS((int)); -extern void _rl_set_cursor PARAMS((int, int)); - -/* text.c */ -extern void _rl_fix_point PARAMS((int)); -extern int _rl_replace_text PARAMS((const char *, int, int)); -extern int _rl_forward_char_internal PARAMS((int)); -extern int _rl_insert_char PARAMS((int, int)); -extern int _rl_overwrite_char PARAMS((int, int)); -extern int _rl_overwrite_rubout PARAMS((int, int)); -extern int _rl_rubout_char PARAMS((int, int)); -#if defined (HANDLE_MULTIBYTE) -extern int _rl_char_search_internal PARAMS((int, int, char *, int)); -#else -extern int _rl_char_search_internal PARAMS((int, int, int)); -#endif -extern int _rl_set_mark_at_pos PARAMS((int)); - -/* undo.c */ -extern UNDO_LIST *_rl_copy_undo_entry PARAMS((UNDO_LIST *)); -extern UNDO_LIST *_rl_copy_undo_list PARAMS((UNDO_LIST *)); -extern void _rl_free_undo_list PARAMS((UNDO_LIST *)); - -/* util.c */ -#if defined (USE_VARARGS) && defined (PREFER_STDARG) -extern void _rl_ttymsg (const char *, ...) __attribute__((__format__ (printf, 1, 2))); -extern void _rl_errmsg (const char *, ...) __attribute__((__format__ (printf, 1, 2))); -extern void _rl_trace (const char *, ...) __attribute__((__format__ (printf, 1, 2))); -#else -extern void _rl_ttymsg (); -extern void _rl_errmsg (); -extern void _rl_trace (); -#endif -extern void _rl_audit_tty PARAMS((char *)); - -extern int _rl_tropen PARAMS((void)); - -extern int _rl_abort_internal PARAMS((void)); -extern int _rl_null_function PARAMS((int, int)); -extern char *_rl_strindex PARAMS((const char *, const char *)); -extern int _rl_qsort_string_compare PARAMS((char **, char **)); -extern int (_rl_uppercase_p) PARAMS((int)); -extern int (_rl_lowercase_p) PARAMS((int)); -extern int (_rl_pure_alphabetic) PARAMS((int)); -extern int (_rl_digit_p) PARAMS((int)); -extern int (_rl_to_lower) PARAMS((int)); -extern int (_rl_to_upper) PARAMS((int)); -extern int (_rl_digit_value) PARAMS((int)); - -/* vi_mode.c */ -extern void _rl_vi_initialize_line PARAMS((void)); -extern void _rl_vi_reset_last PARAMS((void)); -extern void _rl_vi_set_last PARAMS((int, int, int)); -extern int _rl_vi_textmod_command PARAMS((int)); -extern void _rl_vi_done_inserting PARAMS((void)); -extern int _rl_vi_domove_callback PARAMS((_rl_vimotion_cxt *)); - -/************************************************************************* - * Undocumented private variables * - *************************************************************************/ - -/* bind.c */ -extern const char * const _rl_possible_control_prefixes[]; -extern const char * const _rl_possible_meta_prefixes[]; - -/* callback.c */ -extern _rl_callback_func_t *_rl_callback_func; -extern _rl_callback_generic_arg *_rl_callback_data; - -/* complete.c */ -extern int _rl_complete_show_all; -extern int _rl_complete_show_unmodified; -extern int _rl_complete_mark_directories; -extern int _rl_complete_mark_symlink_dirs; -extern int _rl_completion_prefix_display_length; -extern int _rl_completion_columns; -extern int _rl_print_completions_horizontally; -extern int _rl_completion_case_fold; -extern int _rl_completion_case_map; -extern int _rl_match_hidden_files; -extern int _rl_page_completions; -extern int _rl_skip_completed_text; -extern int _rl_menu_complete_prefix_first; - -/* display.c */ -extern int _rl_vis_botlin; -extern int _rl_last_c_pos; -extern int _rl_suppress_redisplay; -extern int _rl_want_redisplay; - -/* isearch.c */ -extern char *_rl_isearch_terminators; - -extern _rl_search_cxt *_rl_iscxt; - -/* macro.c */ -extern char *_rl_executing_macro; - -/* misc.c */ -extern int _rl_history_preserve_point; -extern int _rl_history_saved_point; - -extern _rl_arg_cxt _rl_argcxt; - -/* nls.c */ -extern int _rl_utf8locale; - -/* readline.c */ -extern int _rl_echoing_p; -extern int _rl_horizontal_scroll_mode; -extern int _rl_mark_modified_lines; -extern int _rl_bell_preference; -extern int _rl_meta_flag; -extern int _rl_convert_meta_chars_to_ascii; -extern int _rl_output_meta_chars; -extern int _rl_bind_stty_chars; -extern int _rl_revert_all_at_newline; -extern int _rl_echo_control_chars; -extern char *_rl_comment_begin; -extern unsigned char _rl_parsing_conditionalized_out; -extern Keymap _rl_keymap; -extern FILE *_rl_in_stream; -extern FILE *_rl_out_stream; -extern int _rl_last_command_was_kill; -extern int _rl_eof_char; -extern procenv_t _rl_top_level; -extern _rl_keyseq_cxt *_rl_kscxt; - -extern int _rl_executing_keyseq_size; - -/* search.c */ -extern _rl_search_cxt *_rl_nscxt; - -/* signals.c */ -extern int _rl_interrupt_immediately; -extern int volatile _rl_caught_signal; - -extern _rl_sigcleanup_func_t *_rl_sigcleanup; -extern void *_rl_sigcleanarg; - -extern int _rl_echoctl; - -extern int _rl_intr_char; -extern int _rl_quit_char; -extern int _rl_susp_char; - -/* terminal.c */ -extern int _rl_enable_keypad; -extern int _rl_enable_meta; -extern char *_rl_term_clreol; -extern char *_rl_term_clrpag; -extern char *_rl_term_im; -extern char *_rl_term_ic; -extern char *_rl_term_ei; -extern char *_rl_term_DC; -extern char *_rl_term_up; -extern char *_rl_term_dc; -extern char *_rl_term_cr; -extern char *_rl_term_IC; -extern char *_rl_term_forward_char; -extern int _rl_screenheight; -extern int _rl_screenwidth; -extern int _rl_screenchars; -extern int _rl_terminal_can_insert; -extern int _rl_term_autowrap; - -/* undo.c */ -extern int _rl_doing_an_undo; -extern int _rl_undo_group_level; - -/* vi_mode.c */ -extern int _rl_vi_last_command; -extern _rl_vimotion_cxt *_rl_vimvcxt; - -#endif /* _RL_PRIVATE_H_ */ diff --git a/lib/readline/undo.c~ b/lib/readline/undo.c~ deleted file mode 100644 index 96901c5ea..000000000 --- a/lib/readline/undo.c~ +++ /dev/null @@ -1,341 +0,0 @@ -/* readline.c -- a general facility for reading lines of input - with emacs style editing and completion. */ - -/* Copyright (C) 1987-2009 Free Software Foundation, Inc. - - This file is part of the GNU Readline Library (Readline), a library - for reading lines of text with interactive input and history editing. - - Readline is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Readline is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Readline. If not, see . -*/ - -#define READLINE_LIBRARY - -#if defined (HAVE_CONFIG_H) -# include -#endif - -#include - -#if defined (HAVE_UNISTD_H) -# include /* for _POSIX_VERSION */ -#endif /* HAVE_UNISTD_H */ - -#if defined (HAVE_STDLIB_H) -# include -#else -# include "ansi_stdlib.h" -#endif /* HAVE_STDLIB_H */ - -#include - -/* System-specific feature definitions and include files. */ -#include "rldefs.h" - -/* Some standard library routines. */ -#include "readline.h" -#include "history.h" - -#include "rlprivate.h" -#include "xmalloc.h" - -extern void replace_history_data PARAMS((int, histdata_t *, histdata_t *)); - -/* Non-zero tells rl_delete_text and rl_insert_text to not add to - the undo list. */ -int _rl_doing_an_undo = 0; - -/* How many unclosed undo groups we currently have. */ -int _rl_undo_group_level = 0; - -/* The current undo list for THE_LINE. */ -UNDO_LIST *rl_undo_list = (UNDO_LIST *)NULL; - -/* **************************************************************** */ -/* */ -/* Undo, and Undoing */ -/* */ -/* **************************************************************** */ - -static UNDO_LIST * -alloc_undo_entry (what, start, end, text) - enum undo_code what; - int start, end; - char *text; -{ - UNDO_LIST *temp; - - temp = (UNDO_LIST *)xmalloc (sizeof (UNDO_LIST)); - temp->what = what; - temp->start = start; - temp->end = end; - temp->text = text; - - temp->next = (UNDO_LIST *)NULL; - return temp; -} - -/* Remember how to undo something. Concatenate some undos if that - seems right. */ -void -rl_add_undo (what, start, end, text) - enum undo_code what; - int start, end; - char *text; -{ - UNDO_LIST *temp; - - temp = alloc_undo_entry (what, start, end, text); - temp->next = rl_undo_list; - rl_undo_list = temp; -} - -/* Free an UNDO_LIST */ -void -_rl_free_undo_list (ul) - UNDO_LIST *ul; -{ - UNDO_LIST *release; - - while (ul) - { - release = ul; - ul = ul->next; - - if (release->what == UNDO_DELETE) - xfree (release->text); - - xfree (release); - } -} - -/* Free the existing undo list. */ -void -rl_free_undo_list () -{ - UNDO_LIST *release, *orig_list; - - orig_list = rl_undo_list; - _rl_free_undo_list (rl_undo_list); - rl_undo_list = (UNDO_LIST *)NULL; - replace_history_data (-1, (histdata_t *)orig_list, (histdata_t *)NULL); -} - -UNDO_LIST * -_rl_copy_undo_entry (entry) - UNDO_LIST *entry; -{ - UNDO_LIST *new; - - new = alloc_undo_entry (entry->what, entry->start, entry->end, (char *)NULL); - new->text = entry->text ? savestring (entry->text) : 0; - return new; -} - -UNDO_LIST * -_rl_copy_undo_list (head) - UNDO_LIST *head; -{ - UNDO_LIST *list, *new, *roving, *c; - - if (head == 0) - return head; - - list = head; - new = 0; - while (list) - { - c = _rl_copy_undo_entry (list); - if (new == 0) - roving = new = c; - else - { - roving->next = c; - roving = roving->next; - } - list = list->next; - } - - roving->next = 0; - return new; -} - -/* Undo the next thing in the list. Return 0 if there - is nothing to undo, or non-zero if there was. */ -int -rl_do_undo () -{ - UNDO_LIST *release; - int waiting_for_begin, start, end; - -#define TRANS(i) ((i) == -1 ? rl_point : ((i) == -2 ? rl_end : (i))) - - start = end = waiting_for_begin = 0; - do - { - if (rl_undo_list == 0) - return (0); - - _rl_doing_an_undo = 1; - RL_SETSTATE(RL_STATE_UNDOING); - - /* To better support vi-mode, a start or end value of -1 means - rl_point, and a value of -2 means rl_end. */ - if (rl_undo_list->what == UNDO_DELETE || rl_undo_list->what == UNDO_INSERT) - { - start = TRANS (rl_undo_list->start); - end = TRANS (rl_undo_list->end); - } - - switch (rl_undo_list->what) - { - /* Undoing deletes means inserting some text. */ - case UNDO_DELETE: - rl_point = start; - rl_insert_text (rl_undo_list->text); - xfree (rl_undo_list->text); - break; - - /* Undoing inserts means deleting some text. */ - case UNDO_INSERT: - rl_delete_text (start, end); - rl_point = start; - break; - - /* Undoing an END means undoing everything 'til we get to a BEGIN. */ - case UNDO_END: - waiting_for_begin++; - break; - - /* Undoing a BEGIN means that we are done with this group. */ - case UNDO_BEGIN: - if (waiting_for_begin) - waiting_for_begin--; - else - rl_ding (); - break; - } - - _rl_doing_an_undo = 0; - RL_UNSETSTATE(RL_STATE_UNDOING); - - release = rl_undo_list; - rl_undo_list = rl_undo_list->next; - replace_history_data (-1, (histdata_t *)release, (histdata_t *)rl_undo_list); - - xfree (release); - } - while (waiting_for_begin); - - return (1); -} -#undef TRANS - -int -_rl_fix_last_undo_of_type (type, start, end) - int type, start, end; -{ - UNDO_LIST *rl; - - for (rl = rl_undo_list; rl; rl = rl->next) - { - if (rl->what == type) - { - rl->start = start; - rl->end = end; - return 0; - } - } - return 1; -} - -/* Begin a group. Subsequent undos are undone as an atomic operation. */ -int -rl_begin_undo_group () -{ - rl_add_undo (UNDO_BEGIN, 0, 0, 0); - _rl_undo_group_level++; - return 0; -} - -/* End an undo group started with rl_begin_undo_group (). */ -int -rl_end_undo_group () -{ - rl_add_undo (UNDO_END, 0, 0, 0); - _rl_undo_group_level--; - return 0; -} - -/* Save an undo entry for the text from START to END. */ -int -rl_modifying (start, end) - int start, end; -{ - if (start > end) - { - SWAP (start, end); - } - - if (start != end) - { - char *temp = rl_copy_text (start, end); - rl_begin_undo_group (); - rl_add_undo (UNDO_DELETE, start, end, temp); - rl_add_undo (UNDO_INSERT, start, end, (char *)NULL); - rl_end_undo_group (); - } - return 0; -} - -/* Revert the current line to its previous state. */ -int -rl_revert_line (count, key) - int count, key; -{ - if (rl_undo_list == 0) - rl_ding (); - else - { - while (rl_undo_list) - rl_do_undo (); -#if defined (VI_MODE) - if (rl_editing_mode == vi_mode) - rl_point = rl_mark = 0; /* rl_end should be set correctly */ -#endif - } - - return 0; -} - -/* Do some undoing of things that were done. */ -int -rl_undo_command (count, key) - int count, key; -{ - if (count < 0) - return 0; /* Nothing to do. */ - - while (count) - { - if (rl_do_undo ()) - count--; - else - { - rl_ding (); - break; - } - } - return 0; -} diff --git a/lib/sh/strtrans.c~ b/lib/sh/strtrans.c~ deleted file mode 100644 index 79878c65c..000000000 --- a/lib/sh/strtrans.c~ +++ /dev/null @@ -1,374 +0,0 @@ -/* strtrans.c - Translate and untranslate strings with ANSI-C escape sequences. */ - -/* Copyright (C) 2000-2011 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#include - -#if defined (HAVE_UNISTD_H) -# include -#endif - -#include -#include -#include - -#include "shell.h" - -#include "shmbchar.h" -#include "shmbutil.h" - -#ifdef ESC -#undef ESC -#endif -#define ESC '\033' /* ASCII */ - -/* Convert STRING by expanding the escape sequences specified by the - ANSI C standard. If SAWC is non-null, recognize `\c' and use that - as a string terminator. If we see \c, set *SAWC to 1 before - returning. LEN is the length of STRING. If (FLAGS&1) is non-zero, - that we're translating a string for `echo -e', and therefore should not - treat a single quote as a character that may be escaped with a backslash. - If (FLAGS&2) is non-zero, we're expanding for the parser and want to - quote CTLESC and CTLNUL with CTLESC. If (flags&4) is non-zero, we want - to remove the backslash before any unrecognized escape sequence. */ -char * -ansicstr (string, len, flags, sawc, rlen) - char *string; - int len, flags, *sawc, *rlen; -{ - int c, temp; - char *ret, *r, *s; - unsigned long v; - - if (string == 0 || *string == '\0') - return ((char *)NULL); - -#if defined (HANDLE_MULTIBYTE) - ret = (char *)xmalloc (6*len + 1); -#else - ret = (char *)xmalloc (2*len + 1); /* 2*len for possible CTLESC */ -#endif - for (r = ret, s = string; s && *s; ) - { - c = *s++; - if (c != '\\' || *s == '\0') - *r++ = c; - else - { - switch (c = *s++) - { -#if defined (__STDC__) - case 'a': c = '\a'; break; - case 'v': c = '\v'; break; -#else - case 'a': c = (int) 0x07; break; - case 'v': c = (int) 0x0B; break; -#endif - case 'b': c = '\b'; break; - case 'e': case 'E': /* ESC -- non-ANSI */ - c = ESC; break; - case 'f': c = '\f'; break; - case 'n': c = '\n'; break; - case 'r': c = '\r'; break; - case 't': c = '\t'; break; - case '1': case '2': case '3': - case '4': case '5': case '6': - case '7': -#if 1 - if (flags & 1) - { - *r++ = '\\'; - break; - } - /*FALLTHROUGH*/ -#endif - case '0': - /* If (FLAGS & 1), we're translating a string for echo -e (or - the equivalent xpg_echo option), so we obey the SUSv3/ - POSIX-2001 requirement and accept 0-3 octal digits after - a leading `0'. */ - temp = 2 + ((flags & 1) && (c == '0')); - for (c -= '0'; ISOCTAL (*s) && temp--; s++) - c = (c * 8) + OCTVALUE (*s); - c &= 0xFF; - break; - case 'x': /* Hex digit -- non-ANSI */ - if ((flags & 2) && *s == '{') - { - flags |= 16; /* internal flag value */ - s++; - } - /* Consume at least two hex characters */ - for (temp = 2, c = 0; ISXDIGIT ((unsigned char)*s) && temp--; s++) - c = (c * 16) + HEXVALUE (*s); - /* DGK says that after a `\x{' ksh93 consumes ISXDIGIT chars - until a non-xdigit or `}', so potentially more than two - chars are consumed. */ - if (flags & 16) - { - for ( ; ISXDIGIT ((unsigned char)*s); s++) - c = (c * 16) + HEXVALUE (*s); - flags &= ~16; - if (*s == '}') - s++; - } - /* \x followed by non-hex digits is passed through unchanged */ - else if (temp == 2) - { - *r++ = '\\'; - c = 'x'; - } - c &= 0xFF; - break; -#if defined (HANDLE_MULTIBYTE) - case 'u': - case 'U': - temp = (c == 'u') ? 4 : 8; /* \uNNNN \UNNNNNNNN */ - for (v = 0; ISXDIGIT ((unsigned char)*s) && temp--; s++) - v = (v * 16) + HEXVALUE (*s); - if (temp == ((c == 'u') ? 4 : 8)) - { - *r++ = '\\'; /* c remains unchanged */ - break; - } - else if (v <= 0x7f) /* <= 0x7f translates directly */ - { - c = v; - break; - } - else - { - temp = u32cconv (v, r); - r += temp; - continue; - } -#endif - case '\\': - break; - case '\'': case '"': case '?': - if (flags & 1) - *r++ = '\\'; - break; - case 'c': - if (sawc) - { - *sawc = 1; - *r = '\0'; - if (rlen) - *rlen = r - ret; - return ret; - } - else if ((flags & 1) == 0 && *s == 0) - ; /* pass \c through */ - else if ((flags & 1) == 0 && (c = *s)) - { - s++; - if ((flags & 2) && c == '\\' && c == *s) - s++; /* Posix requires $'\c\\' do backslash escaping */ - c = TOCTRL(c); - break; - } - /*FALLTHROUGH*/ - default: - if ((flags & 4) == 0) - *r++ = '\\'; - break; - } - if ((flags & 2) && (c == CTLESC || c == CTLNUL)) - *r++ = CTLESC; - *r++ = c; - } - } - *r = '\0'; - if (rlen) - *rlen = r - ret; - return ret; -} - -/* Take a string STR, possibly containing non-printing characters, and turn it - into a $'...' ANSI-C style quoted string. Returns a new string. */ -char * -ansic_quote (str, flags, rlen) - char *str; - int flags, *rlen; -{ - char *r, *ret, *s; - int l, rsize, sindex; - unsigned char c; - size_t slen, clen; -#if defined (HANDLE_MULTIBYTE) - int b; - wchar_t wc; -#endif - - if (str == 0 || *str == 0) - return ((char *)0); - - l = strlen (str); - rsize = 4 * l + 4; - r = ret = (char *)xmalloc (rsize); - - *r++ = '$'; - *r++ = '\''; - - s = str; - slen = strlen (str); - - for (s = str; c = *s; s++) - { - l = 1; /* 1 == add backslash; 0 == no backslash */ - clen = 1; - - switch (c) - { - case ESC: c = 'E'; break; -#ifdef __STDC__ - case '\a': c = 'a'; break; - case '\v': c = 'v'; break; -#else - case 0x07: c = 'a'; break; - case 0x0b: c = 'v'; break; -#endif - - case '\b': c = 'b'; break; - case '\f': c = 'f'; break; - case '\n': c = 'n'; break; - case '\r': c = 'r'; break; - case '\t': c = 't'; break; - case '\\': - case '\'': - break; - default: -#if defined (HANDLE_MULTIBYTE) - b = is_basic (c); - if ((b == 0 && ((clen = mbrtowc (&wc, s, MB_CUR_MAX, 0)) < 0 || iswprint (wc) == 0)) || - (b == 1 && ISPRINT (c) == 0)) -#else - if (ISPRINT (c) == 0) -#endif - { - *r++ = '\\'; - *r++ = TOCHAR ((c >> 6) & 07); - *r++ = TOCHAR ((c >> 3) & 07); - *r++ = TOCHAR (c & 07); - continue; - } - l = 0; - break; - } - if (l) - *r++ = '\\'; - - if (clen == 1) - *r++ = c; - else - for (b = 0; b < (int)clen; c = b ? *++s : c) - *r++ = c; - } - - *r++ = '\''; - *r = '\0'; - if (rlen) - *rlen = r - ret; - return ret; -} - -#if defined (HANDLE_MULTIBYTE) -int -ansic_wshouldquote (string) - const char *string; -{ - const wchar_t *wcs; - wchar_t wcc; - - wchar_t *wcstr = NULL; - size_t wclen, slen; - - - slen = mbstowcs (wcstr, string, 0); - - if (slen == -1) - slen = 0; - wcstr = (wchar_t *)xmalloc (sizeof (wchar_t) * (slen + 1)); - mbstowcs (wcstr, string, slen + 1); - - for (wcs = wcstr; wcc = *wcs; wcs++) - if (iswprint(wcc) == 0) - { - free (wcstr); - return 1; - } - - free (wcstr); - return 0; -} -#endif - -/* return 1 if we need to quote with $'...' because of non-printing chars. */ -int -ansic_shouldquote (string) - const char *string; -{ - const char *s; - unsigned char c; - - if (string == 0) - return 0; - - for (s = string; c = *s; s++) - { -#if defined (HANDLE_MULTIBYTE) - if (is_basic (c) == 0) - return (ansic_wshouldquote (s)); -#endif - if (ISPRINT (c) == 0) - return 1; - } - - return 0; -} - -/* $'...' ANSI-C expand the portion of STRING between START and END and - return the result. The result cannot be longer than the input string. */ -char * -ansiexpand (string, start, end, lenp) - char *string; - int start, end, *lenp; -{ - char *temp, *t; - int len, tlen; - - temp = (char *)xmalloc (end - start + 1); - for (tlen = 0, len = start; len < end; ) - temp[tlen++] = string[len++]; - temp[tlen] = '\0'; - - if (*temp) - { - t = ansicstr (temp, tlen, 2, (int *)NULL, lenp); - free (temp); - return (t); - } - else - { - if (lenp) - *lenp = 0; - return (temp); - } -} diff --git a/lib/sh/unicode.c~ b/lib/sh/unicode.c~ deleted file mode 100644 index ba24dd41d..000000000 --- a/lib/sh/unicode.c~ +++ /dev/null @@ -1,319 +0,0 @@ -/* unicode.c - functions to convert unicode characters */ - -/* Copyright (C) 2010-2012 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#include - -#if defined (HANDLE_MULTIBYTE) - -#include -#include -#include -#ifdef HAVE_UNISTD_H -#include -#endif -#include - -#if HAVE_ICONV -# include -#endif - -#include - -#ifndef USHORT_MAX -# ifdef USHRT_MAX -# define USHORT_MAX USHRT_MAX -# else -# define USHORT_MAX ((unsigned short) ~(unsigned short)0) -# endif -#endif - -#if !defined (STREQ) -# define STREQ(a, b) ((a)[0] == (b)[0] && strcmp ((a), (b)) == 0) -#endif /* !STREQ */ - -#if defined (HAVE_LOCALE_CHARSET) -extern const char *locale_charset __P((void)); -#else -extern char *get_locale_var __P((char *)); -#endif - -static int u32init = 0; -static int utf8locale = 0; -#if defined (HAVE_ICONV) -static iconv_t localconv; -#endif - -#ifndef HAVE_LOCALE_CHARSET -static char charsetbuf[40]; - -static char * -stub_charset () -{ - char *locale, *s, *t; - - locale = get_locale_var ("LC_CTYPE"); - if (locale == 0 || *locale == 0) - { - strcpy (charsetbuf, "ASCII"); - return charsetbuf; - } - s = strrchr (locale, '.'); - if (s) - { - strcpy (charsetbuf, s+1); - t = strchr (charsetbuf, '@'); - if (t) - *t = 0; - return charsetbuf; - } - strcpy (charsetbuf, locale); - return charsetbuf; -} -#endif - -void -u32reset () -{ - u32init = 0; - utf8locale = 0; -} - -/* u32toascii ? */ -int -u32tochar (x, s) - unsigned long x; - char *s; -{ - int l; - - l = (x <= UCHAR_MAX) ? 1 : ((x <= USHORT_MAX) ? 2 : 4); - - if (x <= UCHAR_MAX) - s[0] = x & 0xFF; - else if (x <= USHORT_MAX) /* assume unsigned short = 16 bits */ - { - s[0] = (x >> 8) & 0xFF; - s[1] = x & 0xFF; - } - else - { - s[0] = (x >> 24) & 0xFF; - s[1] = (x >> 16) & 0xFF; - s[2] = (x >> 8) & 0xFF; - s[3] = x & 0xFF; - } - s[l] = '\0'; - return l; -} - -/* Convert unsigned 32-bit int to utf-8 character string */ -int -u32toutf8 (wc, s) - u_bits32_t wc; - char *s; -{ - int l; - - if (wc < 0x0080) - { - s[0] = (char)wc; - l = 1; - } - else if (wc < 0x0800) - { - s[0] = (wc >> 6) | 0xc0; - s[1] = (wc & 0x3f) | 0x80; - l = 2; - } - else if (wc < 0x10000) - { - s[0] = (wc >> 12) | 0xe0; - s[1] = ((wc >> 6) & 0x3f) | 0x80; - s[2] = (wc & 0x3f) | 0x80; - l = 3; - } - else if (wc < 0x200000) - { - s[0] = (wc >> 18) | 0xf0; - s[1] = ((wc >> 12) & 0x3f) | 0x80; - s[2] = ((wc >> 6) & 0x3f) | 0x80; - s[3] = (wc & 0x3f) | 0x80; - l = 4; - } - /* Strictly speaking, UTF-8 doesn't have characters longer than 4 bytes */ - else if (wc < 0x04000000) - { - s[0] = (wc >> 24) | 0xf8; - s[1] = ((wc >> 18) & 0x3f) | 0x80; - s[2] = ((wc >> 12) & 0x3f) | 0x80; - s[3] = ((wc >> 6) & 0x3f) | 0x80; - s[4] = (wc & 0x3f) | 0x80; - l = 5; - } - else if (wc < 0x080000000) - { - s[0] = (wc >> 30) | 0xf8; - s[1] = ((wc >> 24) & 0x3f) | 0x80; - s[2] = ((wc >> 18) & 0x3f) | 0x80; - s[3] = ((wc >> 12) & 0x3f) | 0x80; - s[4] = ((wc >> 6) & 0x3f) | 0x80; - s[5] = (wc & 0x3f) | 0x80; - l = 6; - } - else - l = 0; - - s[l] = '\0'; - return l; -} - -/* Convert a 32-bit unsigned int (unicode) to a UTF-16 string. Rarely used, - only if sizeof(wchar_t) == 2. */ -int -u32toutf16 (c, s) - u_bits32_t c; - unsigned short *s; -{ - int l; - - l = 0; - if (c < 0x0d800) - { - s[0] = (unsigned short) (c & 0xFFFF); - l = 1; - } - else if (c >= 0x0e000 && c <= 0x010ffff) - { - c -= 0x010000; - s[0] = (unsigned short)((c >> 10) + 0xd800); - s[1] = (unsigned short)((c & 0x3ff) + 0xdc00); - l = 2; - } - s[l] = 0; - return l; -} - -/* convert a single unicode-32 character into a multibyte string and put the - result in S, which must be large enough (at least MB_LEN_MAX bytes) */ -int -u32cconv (c, s) - unsigned long c; - char *s; -{ - wchar_t wc; - wchar_t ws[3]; - int n; -#if HAVE_ICONV - const char *charset; - char obuf[25], *optr; - size_t obytesleft; - const char *iptr; - size_t sn; -#endif - -#if __STDC_ISO_10646__ - wc = c; - if (sizeof (wchar_t) == 4 && c <= 0x7fffffff) - { - n = wctomb (s, wc); - if (n != -1) - return n; - } - else if (sizeof (wchar_t) == 2) - { - if (u32toutf16 (c, ws)) - { - n = wcstombs (s, ws, MB_LEN_MAX); - if (n != -1) - return n; - } - } -#endif - -#if HAVE_NL_LANGINFO - codeset = nl_langinfo (CODESET); - if (STREQ (codeset, "UTF-8")) - { - n = u32toutf8 (c, s); - return n; - } -#endif - -#if HAVE_ICONV - /* this is mostly from coreutils-8.5/lib/unicodeio.c */ - if (u32init == 0) - { -# if HAVE_LOCALE_CHARSET - charset = locale_charset (); /* XXX - fix later */ -# else - charset = stub_charset (); -# endif - if (STREQ (charset, "UTF-8")) - utf8locale = 1; - else - { - localconv = iconv_open (charset, "UTF-8"); - if (localconv == (iconv_t)-1) - localconv = iconv_open (charset, "ASCII"); - } - u32init = 1; - } - - if (utf8locale) - { - n = u32toutf8 (c, s); - return n; - } - - if (localconv == (iconv_t)-1) - { - n = u32tochar (c, s); - return n; - } - - n = u32toutf8 (c, s); - - optr = obuf; - obytesleft = sizeof (obuf); - iptr = s; - sn = n; - - iconv (localconv, NULL, NULL, NULL, NULL); - - if (iconv (localconv, (ICONV_CONST char **)&iptr, &sn, &optr, &obytesleft) == (size_t)-1) - return n; /* You get utf-8 if iconv fails */ - - *optr = '\0'; - - /* number of chars to be copied is optr - obuf if we want to do bounds - checking */ - strcpy (s, obuf); - return (optr - obuf); -#endif - - n = u32tochar (c, s); /* fallback */ - return n; -} -#else -void -u32reset () -{ -} -#endif /* HANDLE_MULTIBYTE */ diff --git a/locale.c~ b/locale.c~ deleted file mode 100644 index 105555914..000000000 --- a/locale.c~ +++ /dev/null @@ -1,563 +0,0 @@ -/* locale.c - Miscellaneous internationalization functions. */ - -/* Copyright (C) 1996-2009 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#include "config.h" - -#include "bashtypes.h" - -#if defined (HAVE_UNISTD_H) -# include -#endif - -#if HAVE_LANGINFO_CODESET -# include -#endif - -#include "bashintl.h" -#include "bashansi.h" -#include -#include "chartypes.h" -#include - -#include "shell.h" -#include "input.h" /* For bash_input */ - -#ifndef errno -extern int errno; -#endif - -int locale_utf8locale; /* unused for now */ -int locale_mb_cur_max; /* value of MB_CUR_MAX for current locale (LC_CTYPE) */ - -extern int dump_translatable_strings, dump_po_strings; - -/* The current locale when the program begins */ -static char *default_locale; - -/* The current domain for textdomain(3). */ -static char *default_domain; -static char *default_dir; - -/* tracks the value of LC_ALL; used to override values for other locale - categories */ -static char *lc_all; - -/* tracks the value of LC_ALL; used to provide defaults for locale - categories */ -static char *lang; - -/* Called to reset all of the locale variables to their appropriate values - if (and only if) LC_ALL has not been assigned a value. */ -static int reset_locale_vars __P((void)); - -static void locale_setblanks __P((void)); -static int locale_isutf8 __P((char *)); - -/* Set the value of default_locale and make the current locale the - system default locale. This should be called very early in main(). */ -void -set_default_locale () -{ -#if defined (HAVE_SETLOCALE) - default_locale = setlocale (LC_ALL, ""); - if (default_locale) - default_locale = savestring (default_locale); -#endif /* HAVE_SETLOCALE */ - bindtextdomain (PACKAGE, LOCALEDIR); - textdomain (PACKAGE); - - locale_mb_cur_max = MB_CUR_MAX; -} - -/* Set default values for LC_CTYPE, LC_COLLATE, LC_MESSAGES, LC_NUMERIC and - LC_TIME if they are not specified in the environment, but LC_ALL is. This - should be called from main() after parsing the environment. */ -void -set_default_locale_vars () -{ - char *val; - -#if defined (HAVE_SETLOCALE) - -# if defined (LC_CTYPE) - val = get_string_value ("LC_CTYPE"); - if (val == 0 && lc_all && *lc_all) - { - setlocale (LC_CTYPE, lc_all); - locale_setblanks (); - locale_mb_cur_max = MB_CUR_MAX; - } -# endif - -# if defined (LC_COLLATE) - val = get_string_value ("LC_COLLATE"); - if (val == 0 && lc_all && *lc_all) - setlocale (LC_COLLATE, lc_all); -# endif /* LC_COLLATE */ - -# if defined (LC_MESSAGES) - val = get_string_value ("LC_MESSAGES"); - if (val == 0 && lc_all && *lc_all) - setlocale (LC_MESSAGES, lc_all); -# endif /* LC_MESSAGES */ - -# if defined (LC_NUMERIC) - val = get_string_value ("LC_NUMERIC"); - if (val == 0 && lc_all && *lc_all) - setlocale (LC_NUMERIC, lc_all); -# endif /* LC_NUMERIC */ - -# if defined (LC_TIME) - val = get_string_value ("LC_TIME"); - if (val == 0 && lc_all && *lc_all) - setlocale (LC_TIME, lc_all); -# endif /* LC_TIME */ - -#endif /* HAVE_SETLOCALE */ - - val = get_string_value ("TEXTDOMAIN"); - if (val && *val) - { - FREE (default_domain); - default_domain = savestring (val); -#if 0 - /* Don't want to override the shell's textdomain as the default */ - textdomain (default_domain); -#endif - } - - val = get_string_value ("TEXTDOMAINDIR"); - if (val && *val) - { - FREE (default_dir); - default_dir = savestring (val); - if (default_domain && *default_domain) - bindtextdomain (default_domain, default_dir); - } -} - -/* Set one of the locale categories (specified by VAR) to VALUE. Returns 1 - if successful, 0 otherwise. */ -int -set_locale_var (var, value) - char *var, *value; -{ - int r; - char *x; - - x = ""; - errno = 0; - if (var[0] == 'T' && var[10] == 0) /* TEXTDOMAIN */ - { - FREE (default_domain); - default_domain = value ? savestring (value) : (char *)NULL; -#if 0 - /* Don't want to override the shell's textdomain as the default */ - textdomain (default_domain); -#endif - return (1); - } - else if (var[0] == 'T') /* TEXTDOMAINDIR */ - { - FREE (default_dir); - default_dir = value ? savestring (value) : (char *)NULL; - if (default_domain && *default_domain) - bindtextdomain (default_domain, default_dir); - return (1); - } - - /* var[0] == 'L' && var[1] == 'C' && var[2] == '_' */ - - else if (var[3] == 'A') /* LC_ALL */ - { - FREE (lc_all); - if (value) - lc_all = savestring (value); - else - { - lc_all = (char *)xmalloc (1); - lc_all[0] = '\0'; - } -#if defined (HAVE_SETLOCALE) - r = *lc_all ? ((x = setlocale (LC_ALL, lc_all)) != 0) : reset_locale_vars (); - if (x == 0) - { - if (errno == 0) - internal_warning(_("setlocale: LC_ALL: cannot change locale (%s)"), lc_all); - else - internal_warning(_("setlocale: LC_ALL: cannot change locale (%s): %s"), lc_all, strerror (errno)); - } - locale_setblanks (); - locale_mb_cur_max = MB_CUR_MAX; - return r; -#else - return (1); -#endif - } - -#if defined (HAVE_SETLOCALE) - else if (var[3] == 'C' && var[4] == 'T') /* LC_CTYPE */ - { -# if defined (LC_CTYPE) - if (lc_all == 0 || *lc_all == '\0') - { - x = setlocale (LC_CTYPE, get_locale_var ("LC_CTYPE")); - locale_setblanks (); - locale_mb_cur_max = MB_CUR_MAX; - } -# endif - } - else if (var[3] == 'C' && var[4] == 'O') /* LC_COLLATE */ - { -# if defined (LC_COLLATE) - if (lc_all == 0 || *lc_all == '\0') - x = setlocale (LC_COLLATE, get_locale_var ("LC_COLLATE")); -# endif /* LC_COLLATE */ - } - else if (var[3] == 'M' && var[4] == 'E') /* LC_MESSAGES */ - { -# if defined (LC_MESSAGES) - if (lc_all == 0 || *lc_all == '\0') - x = setlocale (LC_MESSAGES, get_locale_var ("LC_MESSAGES")); -# endif /* LC_MESSAGES */ - } - else if (var[3] == 'N' && var[4] == 'U') /* LC_NUMERIC */ - { -# if defined (LC_NUMERIC) - if (lc_all == 0 || *lc_all == '\0') - x = setlocale (LC_NUMERIC, get_locale_var ("LC_NUMERIC")); -# endif /* LC_NUMERIC */ - } - else if (var[3] == 'T' && var[4] == 'I') /* LC_TIME */ - { -# if defined (LC_TIME) - if (lc_all == 0 || *lc_all == '\0') - x = setlocale (LC_TIME, get_locale_var ("LC_TIME")); -# endif /* LC_TIME */ - } -#endif /* HAVE_SETLOCALE */ - - if (x == 0) - { - if (errno == 0) - internal_warning(_("setlocale: %s: cannot change locale (%s)"), var, get_locale_var (var)); - else - internal_warning(_("setlocale: %s: cannot change locale (%s): %s"), var, get_locale_var (var), strerror (errno)); - } - - return (x != 0); -} - -/* Called when LANG is assigned a value. Tracks value in `lang'. Calls - reset_locale_vars() to reset any default values if LC_ALL is unset or - null. */ -int -set_lang (var, value) - char *var, *value; -{ - FREE (lang); - if (value) - lang = savestring (value); - else - { - lang = (char *)xmalloc (1); - lang[0] = '\0'; - } - - return ((lc_all == 0 || *lc_all == 0) ? reset_locale_vars () : 0); -} - -/* Set default values for LANG and LC_ALL. Default values for all other - locale-related variables depend on these. */ -void -set_default_lang () -{ - char *v; - - v = get_string_value ("LC_ALL"); - set_locale_var ("LC_ALL", v); - - v = get_string_value ("LANG"); - set_lang ("LANG", v); -} - -/* Get the value of one of the locale variables (LC_MESSAGES, LC_CTYPE). - The precedence is as POSIX.2 specifies: LC_ALL has precedence over - the specific locale variables, and LANG, if set, is used as the default. */ -char * -get_locale_var (var) - char *var; -{ - char *locale; - - locale = lc_all; - - if (locale == 0 || *locale == 0) - locale = get_string_value (var); /* XXX - mem leak? */ - if (locale == 0 || *locale == 0) - locale = lang; - if (locale == 0 || *locale == 0) -#if 0 - locale = default_locale; /* system-dependent; not really portable. should it be "C"? */ -#else - locale = ""; -#endif - return (locale); -} - -/* Called to reset all of the locale variables to their appropriate values - if (and only if) LC_ALL has not been assigned a value. DO NOT CALL THIS - IF LC_ALL HAS BEEN ASSIGNED A VALUE. */ -static int -reset_locale_vars () -{ - char *t; -#if defined (HAVE_SETLOCALE) - if (lang == 0 || *lang == '\0') - maybe_make_export_env (); /* trust that this will change environment for setlocale */ - if (setlocale (LC_ALL, lang ? lang : "") == 0) - return 0; - -# if defined (LC_CTYPE) - t = setlocale (LC_CTYPE, get_locale_var ("LC_CTYPE")); -# endif -# if defined (LC_COLLATE) - t = setlocale (LC_COLLATE, get_locale_var ("LC_COLLATE")); -# endif -# if defined (LC_MESSAGES) - t = setlocale (LC_MESSAGES, get_locale_var ("LC_MESSAGES")); -# endif -# if defined (LC_NUMERIC) - t = setlocale (LC_NUMERIC, get_locale_var ("LC_NUMERIC")); -# endif -# if defined (LC_TIME) - t = setlocale (LC_TIME, get_locale_var ("LC_TIME")); -# endif - - locale_setblanks (); - locale_mb_cur_max = MB_CUR_MAX; - -#endif - return 1; -} - -/* Translate the contents of STRING, a $"..." quoted string, according - to the current locale. In the `C' or `POSIX' locale, or if gettext() - is not available, the passed string is returned unchanged. The - length of the translated string is returned in LENP, if non-null. */ -char * -localetrans (string, len, lenp) - char *string; - int len, *lenp; -{ - char *locale, *t; - char *translated; - int tlen; - - /* Don't try to translate null strings. */ - if (string == 0 || *string == 0) - { - if (lenp) - *lenp = 0; - return ((char *)NULL); - } - - locale = get_locale_var ("LC_MESSAGES"); - - /* If we don't have setlocale() or the current locale is `C' or `POSIX', - just return the string. If we don't have gettext(), there's no use - doing anything else. */ - if (locale == 0 || locale[0] == '\0' || - (locale[0] == 'C' && locale[1] == '\0') || STREQ (locale, "POSIX")) - { - t = (char *)xmalloc (len + 1); - strcpy (t, string); - if (lenp) - *lenp = len; - return (t); - } - - /* Now try to translate it. */ - if (default_domain && *default_domain) - translated = dgettext (default_domain, string); - else - translated = string; - - if (translated == string) /* gettext returns its argument if untranslatable */ - { - t = (char *)xmalloc (len + 1); - strcpy (t, string); - if (lenp) - *lenp = len; - } - else - { - tlen = strlen (translated); - t = (char *)xmalloc (tlen + 1); - strcpy (t, translated); - if (lenp) - *lenp = tlen; - } - return (t); -} - -/* Change a bash string into a string suitable for inclusion in a `po' file. - This backslash-escapes `"' and `\' and changes newlines into \\\n"\n". */ -char * -mk_msgstr (string, foundnlp) - char *string; - int *foundnlp; -{ - register int c, len; - char *result, *r, *s; - - for (len = 0, s = string; s && *s; s++) - { - len++; - if (*s == '"' || *s == '\\') - len++; - else if (*s == '\n') - len += 5; - } - - r = result = (char *)xmalloc (len + 3); - *r++ = '"'; - - for (s = string; s && (c = *s); s++) - { - if (c == '\n') /* -> \n"" */ - { - *r++ = '\\'; - *r++ = 'n'; - *r++ = '"'; - *r++ = '\n'; - *r++ = '"'; - if (foundnlp) - *foundnlp = 1; - continue; - } - if (c == '"' || c == '\\') - *r++ = '\\'; - *r++ = c; - } - - *r++ = '"'; - *r++ = '\0'; - - return result; -} - -/* $"..." -- Translate the portion of STRING between START and END - according to current locale using gettext (if available) and return - the result. The caller will take care of leaving the quotes intact. - The string will be left without the leading `$' by the caller. - If translation is performed, the translated string will be double-quoted - by the caller. The length of the translated string is returned in LENP, - if non-null. */ -char * -localeexpand (string, start, end, lineno, lenp) - char *string; - int start, end, lineno, *lenp; -{ - int len, tlen, foundnl; - char *temp, *t, *t2; - - temp = (char *)xmalloc (end - start + 1); - for (tlen = 0, len = start; len < end; ) - temp[tlen++] = string[len++]; - temp[tlen] = '\0'; - - /* If we're just dumping translatable strings, don't do anything with the - string itself, but if we're dumping in `po' file format, convert it into - a form more palatable to gettext(3) and friends by quoting `"' and `\' - with backslashes and converting into `\n""'. If we find a - newline in TEMP, we first output a `msgid ""' line and then the - translated string; otherwise we output the `msgid' and translated - string all on one line. */ - if (dump_translatable_strings) - { - if (dump_po_strings) - { - foundnl = 0; - t = mk_msgstr (temp, &foundnl); - t2 = foundnl ? "\"\"\n" : ""; - - printf ("#: %s:%d\nmsgid %s%s\nmsgstr \"\"\n", - yy_input_name (), lineno, t2, t); - free (t); - } - else - printf ("\"%s\"\n", temp); - - if (lenp) - *lenp = tlen; - return (temp); - } - else if (*temp) - { - t = localetrans (temp, tlen, &len); - free (temp); - if (lenp) - *lenp = len; - return (t); - } - else - { - if (lenp) - *lenp = 0; - return (temp); - } -} - -/* Set every character in the character class to be a shell break - character for the lexical analyzer when the locale changes. */ -static void -locale_setblanks () -{ - int x; - - for (x = 0; x < sh_syntabsiz; x++) - { - if (isblank (x)) - sh_syntaxtab[x] |= CSHBRK|CBLANK; - else if (member (x, shell_break_chars)) - { - sh_syntaxtab[x] |= CSHBRK; - sh_syntaxtab[x] &= ~CBLANK; - } - else - sh_syntaxtab[x] &= ~(CSHBRK|CBLANK); - } -} - -static int -locale_isutf8 (lspec) - char *lspec; -{ - char *cp; - -#if HAVE_LANGINFO_CODESET - cp = nl_langinfo (CODESET); - return (STREQ (cp, "UTF-8") || STREQ (cp, "utf8")); -#else - /* Take a shot */ - return (strstr (lspec, "UTF-8") || strstr (lspec, "utf8")); -#endif -} diff --git a/parse.y~ b/parse.y~ deleted file mode 100644 index d57f78309..000000000 --- a/parse.y~ +++ /dev/null @@ -1,6086 +0,0 @@ -/* parse.y - Yacc grammar for bash. */ - -/* Copyright (C) 1989-2010 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -%{ -#include "config.h" - -#include "bashtypes.h" -#include "bashansi.h" - -#include "filecntl.h" - -#if defined (HAVE_UNISTD_H) -# include -#endif - -#if defined (HAVE_LOCALE_H) -# include -#endif - -#include -#include "chartypes.h" -#include - -#include "memalloc.h" - -#include "bashintl.h" - -#define NEED_STRFTIME_DECL /* used in externs.h */ - -#include "shell.h" -#include "trap.h" -#include "flags.h" -#include "parser.h" -#include "mailcheck.h" -#include "test.h" -#include "builtins.h" -#include "builtins/common.h" -#include "builtins/builtext.h" - -#include "shmbutil.h" - -#if defined (READLINE) -# include "bashline.h" -# include -#endif /* READLINE */ - -#if defined (HISTORY) -# include "bashhist.h" -# include -#endif /* HISTORY */ - -#if defined (JOB_CONTROL) -# include "jobs.h" -#endif /* JOB_CONTROL */ - -#if defined (ALIAS) -# include "alias.h" -#else -typedef void *alias_t; -#endif /* ALIAS */ - -#if defined (PROMPT_STRING_DECODE) -# ifndef _MINIX -# include -# endif -# include -# if defined (TM_IN_SYS_TIME) -# include -# include -# endif /* TM_IN_SYS_TIME */ -# include "maxpath.h" -#endif /* PROMPT_STRING_DECODE */ - -#define RE_READ_TOKEN -99 -#define NO_EXPANSION -100 - -#ifdef DEBUG -# define YYDEBUG 1 -#else -# define YYDEBUG 0 -#endif - -#if defined (HANDLE_MULTIBYTE) -# define last_shell_getc_is_singlebyte \ - ((shell_input_line_index > 1) \ - ? shell_input_line_property[shell_input_line_index - 1] \ - : 1) -# define MBTEST(x) ((x) && last_shell_getc_is_singlebyte) -#else -# define last_shell_getc_is_singlebyte 1 -# define MBTEST(x) ((x)) -#endif - -#if defined (EXTENDED_GLOB) -extern int extended_glob; -#endif - -extern int eof_encountered; -extern int no_line_editing, running_under_emacs; -extern int current_command_number; -extern int sourcelevel, parse_and_execute_level; -extern int posixly_correct; -extern int last_command_exit_value; -extern pid_t last_command_subst_pid; -extern char *shell_name, *current_host_name; -extern char *dist_version; -extern int patch_level; -extern int dump_translatable_strings, dump_po_strings; -extern sh_builtin_func_t *last_shell_builtin, *this_shell_builtin; -#if defined (BUFFERED_INPUT) -extern int bash_input_fd_changed; -#endif - -extern int errno; -/* **************************************************************** */ -/* */ -/* "Forward" declarations */ -/* */ -/* **************************************************************** */ - -#ifdef DEBUG -static void debug_parser __P((int)); -#endif - -static int yy_getc __P((void)); -static int yy_ungetc __P((int)); - -#if defined (READLINE) -static int yy_readline_get __P((void)); -static int yy_readline_unget __P((int)); -#endif - -static int yy_string_get __P((void)); -static int yy_string_unget __P((int)); -static void rewind_input_string __P((void)); -static int yy_stream_get __P((void)); -static int yy_stream_unget __P((int)); - -static int shell_getc __P((int)); -static void shell_ungetc __P((int)); -static void discard_until __P((int)); - -#if defined (ALIAS) || defined (DPAREN_ARITHMETIC) -static void push_string __P((char *, int, alias_t *)); -static void pop_string __P((void)); -static void free_string_list __P((void)); -#endif - -static char *read_a_line __P((int)); - -static int reserved_word_acceptable __P((int)); -static int yylex __P((void)); -static int alias_expand_token __P((char *)); -static int time_command_acceptable __P((void)); -static int special_case_tokens __P((char *)); -static int read_token __P((int)); -static char *parse_matched_pair __P((int, int, int, int *, int)); -static char *parse_comsub __P((int, int, int, int *, int)); -#if defined (ARRAY_VARS) -static char *parse_compound_assignment __P((int *)); -#endif -#if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND) -static int parse_dparen __P((int)); -static int parse_arith_cmd __P((char **, int)); -#endif -#if defined (COND_COMMAND) -static void cond_error __P((void)); -static COND_COM *cond_expr __P((void)); -static COND_COM *cond_or __P((void)); -static COND_COM *cond_and __P((void)); -static COND_COM *cond_term __P((void)); -static int cond_skip_newlines __P((void)); -static COMMAND *parse_cond_command __P((void)); -#endif -#if defined (ARRAY_VARS) -static int token_is_assignment __P((char *, int)); -static int token_is_ident __P((char *, int)); -#endif -static int read_token_word __P((int)); -static void discard_parser_constructs __P((int)); - -static char *error_token_from_token __P((int)); -static char *error_token_from_text __P((void)); -static void print_offending_line __P((void)); -static void report_syntax_error __P((char *)); - -static void handle_eof_input_unit __P((void)); -static void prompt_again __P((void)); -#if 0 -static void reset_readline_prompt __P((void)); -#endif -static void print_prompt __P((void)); - -#if defined (HANDLE_MULTIBYTE) -static void set_line_mbstate __P((void)); -static char *shell_input_line_property = NULL; -#else -# define set_line_mbstate() -#endif - -extern int yyerror __P((const char *)); - -#ifdef DEBUG -extern int yydebug; -#endif - -/* Default prompt strings */ -char *primary_prompt = PPROMPT; -char *secondary_prompt = SPROMPT; - -/* PROMPT_STRING_POINTER points to one of these, never to an actual string. */ -char *ps1_prompt, *ps2_prompt; - -/* Handle on the current prompt string. Indirectly points through - ps1_ or ps2_prompt. */ -char **prompt_string_pointer = (char **)NULL; -char *current_prompt_string; - -/* Non-zero means we expand aliases in commands. */ -int expand_aliases = 0; - -/* If non-zero, the decoded prompt string undergoes parameter and - variable substitution, command substitution, arithmetic substitution, - string expansion, process substitution, and quote removal in - decode_prompt_string. */ -int promptvars = 1; - -/* If non-zero, $'...' and $"..." are expanded when they appear within - a ${...} expansion, even when the expansion appears within double - quotes. */ -int extended_quote = 1; - -/* The number of lines read from input while creating the current command. */ -int current_command_line_count; - -/* The number of lines in a command saved while we run parse_and_execute */ -int saved_command_line_count; - -/* The token that currently denotes the end of parse. */ -int shell_eof_token; - -/* The token currently being read. */ -int current_token; - -/* The current parser state. */ -int parser_state; - -/* Variables to manage the task of reading here documents, because we need to - defer the reading until after a complete command has been collected. */ -static REDIRECT *redir_stack[10]; -int need_here_doc; - -/* Where shell input comes from. History expansion is performed on each - line when the shell is interactive. */ -static char *shell_input_line = (char *)NULL; -static int shell_input_line_index; -static int shell_input_line_size; /* Amount allocated for shell_input_line. */ -static int shell_input_line_len; /* strlen (shell_input_line) */ - -/* Either zero or EOF. */ -static int shell_input_line_terminator; - -/* The line number in a script on which a function definition starts. */ -static int function_dstart; - -/* The line number in a script on which a function body starts. */ -static int function_bstart; - -/* The line number in a script at which an arithmetic for command starts. */ -static int arith_for_lineno; - -/* The decoded prompt string. Used if READLINE is not defined or if - editing is turned off. Analogous to current_readline_prompt. */ -static char *current_decoded_prompt; - -/* The last read token, or NULL. read_token () uses this for context - checking. */ -static int last_read_token; - -/* The token read prior to last_read_token. */ -static int token_before_that; - -/* The token read prior to token_before_that. */ -static int two_tokens_ago; - -static int global_extglob; - -/* The line number in a script where the word in a `case WORD', `select WORD' - or `for WORD' begins. This is a nested command maximum, since the array - index is decremented after a case, select, or for command is parsed. */ -#define MAX_CASE_NEST 128 -static int word_lineno[MAX_CASE_NEST]; -static int word_top = -1; - -/* If non-zero, it is the token that we want read_token to return - regardless of what text is (or isn't) present to be read. This - is reset by read_token. If token_to_read == WORD or - ASSIGNMENT_WORD, yylval.word should be set to word_desc_to_read. */ -static int token_to_read; -static WORD_DESC *word_desc_to_read; - -static REDIRECTEE source; -static REDIRECTEE redir; -%} - -%union { - WORD_DESC *word; /* the word that we read. */ - int number; /* the number that we read. */ - WORD_LIST *word_list; - COMMAND *command; - REDIRECT *redirect; - ELEMENT element; - PATTERN_LIST *pattern; -} - -/* Reserved words. Members of the first group are only recognized - in the case that they are preceded by a list_terminator. Members - of the second group are for [[...]] commands. Members of the - third group are recognized only under special circumstances. */ -%token IF THEN ELSE ELIF FI CASE ESAC FOR SELECT WHILE UNTIL DO DONE FUNCTION COPROC -%token COND_START COND_END COND_ERROR -%token IN BANG TIME TIMEOPT TIMEIGN - -/* More general tokens. yylex () knows how to make these. */ -%token WORD ASSIGNMENT_WORD REDIR_WORD -%token NUMBER -%token ARITH_CMD ARITH_FOR_EXPRS -%token COND_CMD -%token AND_AND OR_OR GREATER_GREATER LESS_LESS LESS_AND LESS_LESS_LESS -%token GREATER_AND SEMI_SEMI SEMI_AND SEMI_SEMI_AND -%token LESS_LESS_MINUS AND_GREATER AND_GREATER_GREATER LESS_GREATER -%token GREATER_BAR BAR_AND - -/* The types that the various syntactical units return. */ - -%type inputunit command pipeline pipeline_command -%type list list0 list1 compound_list simple_list simple_list1 -%type simple_command shell_command -%type for_command select_command case_command group_command -%type arith_command -%type cond_command -%type arith_for_command -%type coproc -%type function_def function_body if_command elif_clause subshell -%type redirection redirection_list -%type simple_command_element -%type word_list pattern -%type pattern_list case_clause_sequence case_clause -%type timespec -%type list_terminator - -%start inputunit - -%left '&' ';' '\n' yacc_EOF -%left AND_AND OR_OR -%right '|' BAR_AND -%% - -inputunit: simple_list simple_list_terminator - { - /* Case of regular command. Discard the error - safety net,and return the command just parsed. */ - global_command = $1; - eof_encountered = 0; - /* discard_parser_constructs (0); */ - if (parser_state & PST_CMDSUBST) - parser_state |= PST_EOFTOKEN; - YYACCEPT; - } - | '\n' - { - /* Case of regular command, but not a very - interesting one. Return a NULL command. */ - global_command = (COMMAND *)NULL; - if (parser_state & PST_CMDSUBST) - parser_state |= PST_EOFTOKEN; - YYACCEPT; - } - | error '\n' - { - /* Error during parsing. Return NULL command. */ - global_command = (COMMAND *)NULL; - eof_encountered = 0; - /* discard_parser_constructs (1); */ - if (interactive && parse_and_execute_level == 0) - { - YYACCEPT; - } - else - { - YYABORT; - } - } - | yacc_EOF - { - /* Case of EOF seen by itself. Do ignoreeof or - not. */ - global_command = (COMMAND *)NULL; - handle_eof_input_unit (); - YYACCEPT; - } - ; - -word_list: WORD - { $$ = make_word_list ($1, (WORD_LIST *)NULL); } - | word_list WORD - { $$ = make_word_list ($2, $1); } - ; - -redirection: '>' WORD - { - source.dest = 1; - redir.filename = $2; - $$ = make_redirection (source, r_output_direction, redir, 0); - } - | '<' WORD - { - source.dest = 0; - redir.filename = $2; - $$ = make_redirection (source, r_input_direction, redir, 0); - } - | NUMBER '>' WORD - { - source.dest = $1; - redir.filename = $3; - $$ = make_redirection (source, r_output_direction, redir, 0); - } - | NUMBER '<' WORD - { - source.dest = $1; - redir.filename = $3; - $$ = make_redirection (source, r_input_direction, redir, 0); - } - | REDIR_WORD '>' WORD - { - source.filename = $1; - redir.filename = $3; - $$ = make_redirection (source, r_output_direction, redir, REDIR_VARASSIGN); - } - | REDIR_WORD '<' WORD - { - source.filename = $1; - redir.filename = $3; - $$ = make_redirection (source, r_input_direction, redir, REDIR_VARASSIGN); - } - | GREATER_GREATER WORD - { - source.dest = 1; - redir.filename = $2; - $$ = make_redirection (source, r_appending_to, redir, 0); - } - | NUMBER GREATER_GREATER WORD - { - source.dest = $1; - redir.filename = $3; - $$ = make_redirection (source, r_appending_to, redir, 0); - } - | REDIR_WORD GREATER_GREATER WORD - { - source.filename = $1; - redir.filename = $3; - $$ = make_redirection (source, r_appending_to, redir, REDIR_VARASSIGN); - } - | GREATER_BAR WORD - { - source.dest = 1; - redir.filename = $2; - $$ = make_redirection (source, r_output_force, redir, 0); - } - | NUMBER GREATER_BAR WORD - { - source.dest = $1; - redir.filename = $3; - $$ = make_redirection (source, r_output_force, redir, 0); - } - | REDIR_WORD GREATER_BAR WORD - { - source.filename = $1; - redir.filename = $3; - $$ = make_redirection (source, r_output_force, redir, REDIR_VARASSIGN); - } - | LESS_GREATER WORD - { - source.dest = 0; - redir.filename = $2; - $$ = make_redirection (source, r_input_output, redir, 0); - } - | NUMBER LESS_GREATER WORD - { - source.dest = $1; - redir.filename = $3; - $$ = make_redirection (source, r_input_output, redir, 0); - } - | REDIR_WORD LESS_GREATER WORD - { - source.filename = $1; - redir.filename = $3; - $$ = make_redirection (source, r_input_output, redir, REDIR_VARASSIGN); - } - | LESS_LESS WORD - { - source.dest = 0; - redir.filename = $2; - $$ = make_redirection (source, r_reading_until, redir, 0); - redir_stack[need_here_doc++] = $$; - } - | NUMBER LESS_LESS WORD - { - source.dest = $1; - redir.filename = $3; - $$ = make_redirection (source, r_reading_until, redir, 0); - redir_stack[need_here_doc++] = $$; - } - | REDIR_WORD LESS_LESS WORD - { - source.filename = $1; - redir.filename = $3; - $$ = make_redirection (source, r_reading_until, redir, REDIR_VARASSIGN); - redir_stack[need_here_doc++] = $$; - } - | LESS_LESS_MINUS WORD - { - source.dest = 0; - redir.filename = $2; - $$ = make_redirection (source, r_deblank_reading_until, redir, 0); - redir_stack[need_here_doc++] = $$; - } - | NUMBER LESS_LESS_MINUS WORD - { - source.dest = $1; - redir.filename = $3; - $$ = make_redirection (source, r_deblank_reading_until, redir, 0); - redir_stack[need_here_doc++] = $$; - } - | REDIR_WORD LESS_LESS_MINUS WORD - { - source.filename = $1; - redir.filename = $3; - $$ = make_redirection (source, r_deblank_reading_until, redir, REDIR_VARASSIGN); - redir_stack[need_here_doc++] = $$; - } - | LESS_LESS_LESS WORD - { - source.dest = 0; - redir.filename = $2; - $$ = make_redirection (source, r_reading_string, redir, 0); - } - | NUMBER LESS_LESS_LESS WORD - { - source.dest = $1; - redir.filename = $3; - $$ = make_redirection (source, r_reading_string, redir, 0); - } - | REDIR_WORD LESS_LESS_LESS WORD - { - source.filename = $1; - redir.filename = $3; - $$ = make_redirection (source, r_reading_string, redir, REDIR_VARASSIGN); - } - | LESS_AND NUMBER - { - source.dest = 0; - redir.dest = $2; - $$ = make_redirection (source, r_duplicating_input, redir, 0); - } - | NUMBER LESS_AND NUMBER - { - source.dest = $1; - redir.dest = $3; - $$ = make_redirection (source, r_duplicating_input, redir, 0); - } - | REDIR_WORD LESS_AND NUMBER - { - source.filename = $1; - redir.dest = $3; - $$ = make_redirection (source, r_duplicating_input, redir, REDIR_VARASSIGN); - } - | GREATER_AND NUMBER - { - source.dest = 1; - redir.dest = $2; - $$ = make_redirection (source, r_duplicating_output, redir, 0); - } - | NUMBER GREATER_AND NUMBER - { - source.dest = $1; - redir.dest = $3; - $$ = make_redirection (source, r_duplicating_output, redir, 0); - } - | REDIR_WORD GREATER_AND NUMBER - { - source.filename = $1; - redir.dest = $3; - $$ = make_redirection (source, r_duplicating_output, redir, REDIR_VARASSIGN); - } - | LESS_AND WORD - { - source.dest = 0; - redir.filename = $2; - $$ = make_redirection (source, r_duplicating_input_word, redir, 0); - } - | NUMBER LESS_AND WORD - { - source.dest = $1; - redir.filename = $3; - $$ = make_redirection (source, r_duplicating_input_word, redir, 0); - } - | REDIR_WORD LESS_AND WORD - { - source.filename = $1; - redir.filename = $3; - $$ = make_redirection (source, r_duplicating_input_word, redir, REDIR_VARASSIGN); - } - | GREATER_AND WORD - { - source.dest = 1; - redir.filename = $2; - $$ = make_redirection (source, r_duplicating_output_word, redir, 0); - } - | NUMBER GREATER_AND WORD - { - source.dest = $1; - redir.filename = $3; - $$ = make_redirection (source, r_duplicating_output_word, redir, 0); - } - | REDIR_WORD GREATER_AND WORD - { - source.filename = $1; - redir.filename = $3; - $$ = make_redirection (source, r_duplicating_output_word, redir, REDIR_VARASSIGN); - } - | GREATER_AND '-' - { - source.dest = 1; - redir.dest = 0; - $$ = make_redirection (source, r_close_this, redir, 0); - } - | NUMBER GREATER_AND '-' - { - source.dest = $1; - redir.dest = 0; - $$ = make_redirection (source, r_close_this, redir, 0); - } - | REDIR_WORD GREATER_AND '-' - { - source.filename = $1; - redir.dest = 0; - $$ = make_redirection (source, r_close_this, redir, REDIR_VARASSIGN); - } - | LESS_AND '-' - { - source.dest = 0; - redir.dest = 0; - $$ = make_redirection (source, r_close_this, redir, 0); - } - | NUMBER LESS_AND '-' - { - source.dest = $1; - redir.dest = 0; - $$ = make_redirection (source, r_close_this, redir, 0); - } - | REDIR_WORD LESS_AND '-' - { - source.filename = $1; - redir.dest = 0; - $$ = make_redirection (source, r_close_this, redir, REDIR_VARASSIGN); - } - | AND_GREATER WORD - { - source.dest = 1; - redir.filename = $2; - $$ = make_redirection (source, r_err_and_out, redir, 0); - } - | AND_GREATER_GREATER WORD - { - source.dest = 1; - redir.filename = $2; - $$ = make_redirection (source, r_append_err_and_out, redir, 0); - } - ; - -simple_command_element: WORD - { $$.word = $1; $$.redirect = 0; } - | ASSIGNMENT_WORD - { $$.word = $1; $$.redirect = 0; } - | redirection - { $$.redirect = $1; $$.word = 0; } - ; - -redirection_list: redirection - { - $$ = $1; - } - | redirection_list redirection - { - register REDIRECT *t; - - for (t = $1; t->next; t = t->next) - ; - t->next = $2; - $$ = $1; - } - ; - -simple_command: simple_command_element - { $$ = make_simple_command ($1, (COMMAND *)NULL); } - | simple_command simple_command_element - { $$ = make_simple_command ($2, $1); } - ; - -command: simple_command - { $$ = clean_simple_command ($1); } - | shell_command - { $$ = $1; } - | shell_command redirection_list - { - COMMAND *tc; - - tc = $1; - if (tc->redirects) - { - register REDIRECT *t; - for (t = tc->redirects; t->next; t = t->next) - ; - t->next = $2; - } - else - tc->redirects = $2; - $$ = $1; - } - | function_def - { $$ = $1; } - | coproc - { $$ = $1; } - ; - -shell_command: for_command - { $$ = $1; } - | case_command - { $$ = $1; } - | WHILE compound_list DO compound_list DONE - { $$ = make_while_command ($2, $4); } - | UNTIL compound_list DO compound_list DONE - { $$ = make_until_command ($2, $4); } - | select_command - { $$ = $1; } - | if_command - { $$ = $1; } - | subshell - { $$ = $1; } - | group_command - { $$ = $1; } - | arith_command - { $$ = $1; } - | cond_command - { $$ = $1; } - | arith_for_command - { $$ = $1; } - ; - -for_command: FOR WORD newline_list DO compound_list DONE - { - $$ = make_for_command ($2, add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), $5, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | FOR WORD newline_list '{' compound_list '}' - { - $$ = make_for_command ($2, add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), $5, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | FOR WORD ';' newline_list DO compound_list DONE - { - $$ = make_for_command ($2, add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), $6, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | FOR WORD ';' newline_list '{' compound_list '}' - { - $$ = make_for_command ($2, add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), $6, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | FOR WORD newline_list IN word_list list_terminator newline_list DO compound_list DONE - { - $$ = make_for_command ($2, REVERSE_LIST ($5, WORD_LIST *), $9, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | FOR WORD newline_list IN word_list list_terminator newline_list '{' compound_list '}' - { - $$ = make_for_command ($2, REVERSE_LIST ($5, WORD_LIST *), $9, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | FOR WORD newline_list IN list_terminator newline_list DO compound_list DONE - { - $$ = make_for_command ($2, (WORD_LIST *)NULL, $8, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | FOR WORD newline_list IN list_terminator newline_list '{' compound_list '}' - { - $$ = make_for_command ($2, (WORD_LIST *)NULL, $8, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - ; - -arith_for_command: FOR ARITH_FOR_EXPRS list_terminator newline_list DO compound_list DONE - { - $$ = make_arith_for_command ($2, $6, arith_for_lineno); - if (word_top > 0) word_top--; - } - | FOR ARITH_FOR_EXPRS list_terminator newline_list '{' compound_list '}' - { - $$ = make_arith_for_command ($2, $6, arith_for_lineno); - if (word_top > 0) word_top--; - } - | FOR ARITH_FOR_EXPRS DO compound_list DONE - { - $$ = make_arith_for_command ($2, $4, arith_for_lineno); - if (word_top > 0) word_top--; - } - | FOR ARITH_FOR_EXPRS '{' compound_list '}' - { - $$ = make_arith_for_command ($2, $4, arith_for_lineno); - if (word_top > 0) word_top--; - } - ; - -select_command: SELECT WORD newline_list DO list DONE - { - $$ = make_select_command ($2, add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), $5, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | SELECT WORD newline_list '{' list '}' - { - $$ = make_select_command ($2, add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), $5, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | SELECT WORD ';' newline_list DO list DONE - { - $$ = make_select_command ($2, add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), $6, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | SELECT WORD ';' newline_list '{' list '}' - { - $$ = make_select_command ($2, add_string_to_list ("\"$@\"", (WORD_LIST *)NULL), $6, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | SELECT WORD newline_list IN word_list list_terminator newline_list DO list DONE - { - $$ = make_select_command ($2, REVERSE_LIST ($5, WORD_LIST *), $9, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | SELECT WORD newline_list IN word_list list_terminator newline_list '{' list '}' - { - $$ = make_select_command ($2, REVERSE_LIST ($5, WORD_LIST *), $9, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - ; - -case_command: CASE WORD newline_list IN newline_list ESAC - { - $$ = make_case_command ($2, (PATTERN_LIST *)NULL, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | CASE WORD newline_list IN case_clause_sequence newline_list ESAC - { - $$ = make_case_command ($2, $5, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - | CASE WORD newline_list IN case_clause ESAC - { - $$ = make_case_command ($2, $5, word_lineno[word_top]); - if (word_top > 0) word_top--; - } - ; - -function_def: WORD '(' ')' newline_list function_body - { $$ = make_function_def ($1, $5, function_dstart, function_bstart); } - - | FUNCTION WORD '(' ')' newline_list function_body - { $$ = make_function_def ($2, $6, function_dstart, function_bstart); } - - | FUNCTION WORD newline_list function_body - { $$ = make_function_def ($2, $4, function_dstart, function_bstart); } - ; - -function_body: shell_command - { $$ = $1; } - | shell_command redirection_list - { - COMMAND *tc; - - tc = $1; - /* According to Posix.2 3.9.5, redirections - specified after the body of a function should - be attached to the function and performed when - the function is executed, not as part of the - function definition command. */ - /* XXX - I don't think it matters, but we might - want to change this in the future to avoid - problems differentiating between a function - definition with a redirection and a function - definition containing a single command with a - redirection. The two are semantically equivalent, - though -- the only difference is in how the - command printing code displays the redirections. */ - if (tc->redirects) - { - register REDIRECT *t; - for (t = tc->redirects; t->next; t = t->next) - ; - t->next = $2; - } - else - tc->redirects = $2; - $$ = $1; - } - ; - -subshell: '(' compound_list ')' - { - $$ = make_subshell_command ($2); - $$->flags |= CMD_WANT_SUBSHELL; - } - ; - -coproc: COPROC shell_command - { - $$ = make_coproc_command ("COPROC", $2); - $$->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL; - } - | COPROC shell_command redirection_list - { - COMMAND *tc; - - tc = $2; - if (tc->redirects) - { - register REDIRECT *t; - for (t = tc->redirects; t->next; t = t->next) - ; - t->next = $3; - } - else - tc->redirects = $3; - $$ = make_coproc_command ("COPROC", $2); - $$->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL; - } - | COPROC WORD shell_command - { - $$ = make_coproc_command ($2->word, $3); - $$->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL; - } - | COPROC WORD shell_command redirection_list - { - COMMAND *tc; - - tc = $3; - if (tc->redirects) - { - register REDIRECT *t; - for (t = tc->redirects; t->next; t = t->next) - ; - t->next = $4; - } - else - tc->redirects = $4; - $$ = make_coproc_command ($2->word, $3); - $$->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL; - } - | COPROC simple_command - { - $$ = make_coproc_command ("COPROC", clean_simple_command ($2)); - $$->flags |= CMD_WANT_SUBSHELL|CMD_COPROC_SUBSHELL; - } - ; - -if_command: IF compound_list THEN compound_list FI - { $$ = make_if_command ($2, $4, (COMMAND *)NULL); } - | IF compound_list THEN compound_list ELSE compound_list FI - { $$ = make_if_command ($2, $4, $6); } - | IF compound_list THEN compound_list elif_clause FI - { $$ = make_if_command ($2, $4, $5); } - ; - - -group_command: '{' compound_list '}' - { $$ = make_group_command ($2); } - ; - -arith_command: ARITH_CMD - { $$ = make_arith_command ($1); } - ; - -cond_command: COND_START COND_CMD COND_END - { $$ = $2; } - ; - -elif_clause: ELIF compound_list THEN compound_list - { $$ = make_if_command ($2, $4, (COMMAND *)NULL); } - | ELIF compound_list THEN compound_list ELSE compound_list - { $$ = make_if_command ($2, $4, $6); } - | ELIF compound_list THEN compound_list elif_clause - { $$ = make_if_command ($2, $4, $5); } - ; - -case_clause: pattern_list - | case_clause_sequence pattern_list - { $2->next = $1; $$ = $2; } - ; - -pattern_list: newline_list pattern ')' compound_list - { $$ = make_pattern_list ($2, $4); } - | newline_list pattern ')' newline_list - { $$ = make_pattern_list ($2, (COMMAND *)NULL); } - | newline_list '(' pattern ')' compound_list - { $$ = make_pattern_list ($3, $5); } - | newline_list '(' pattern ')' newline_list - { $$ = make_pattern_list ($3, (COMMAND *)NULL); } - ; - -case_clause_sequence: pattern_list SEMI_SEMI - { $$ = $1; } - | case_clause_sequence pattern_list SEMI_SEMI - { $2->next = $1; $$ = $2; } - | pattern_list SEMI_AND - { $1->flags |= CASEPAT_FALLTHROUGH; $$ = $1; } - | case_clause_sequence pattern_list SEMI_AND - { $2->flags |= CASEPAT_FALLTHROUGH; $2->next = $1; $$ = $2; } - | pattern_list SEMI_SEMI_AND - { $1->flags |= CASEPAT_TESTNEXT; $$ = $1; } - | case_clause_sequence pattern_list SEMI_SEMI_AND - { $2->flags |= CASEPAT_TESTNEXT; $2->next = $1; $$ = $2; } - ; - -pattern: WORD - { $$ = make_word_list ($1, (WORD_LIST *)NULL); } - | pattern '|' WORD - { $$ = make_word_list ($3, $1); } - ; - -/* A list allows leading or trailing newlines and - newlines as operators (equivalent to semicolons). - It must end with a newline or semicolon. - Lists are used within commands such as if, for, while. */ - -list: newline_list list0 - { - $$ = $2; - if (need_here_doc) - gather_here_documents (); - } - ; - -compound_list: list - | newline_list list1 - { - $$ = $2; - } - ; - -list0: list1 '\n' newline_list - | list1 '&' newline_list - { - if ($1->type == cm_connection) - $$ = connect_async_list ($1, (COMMAND *)NULL, '&'); - else - $$ = command_connect ($1, (COMMAND *)NULL, '&'); - } - | list1 ';' newline_list - - ; - -list1: list1 AND_AND newline_list list1 - { $$ = command_connect ($1, $4, AND_AND); } - | list1 OR_OR newline_list list1 - { $$ = command_connect ($1, $4, OR_OR); } - | list1 '&' newline_list list1 - { - if ($1->type == cm_connection) - $$ = connect_async_list ($1, $4, '&'); - else - $$ = command_connect ($1, $4, '&'); - } - | list1 ';' newline_list list1 - { $$ = command_connect ($1, $4, ';'); } - | list1 '\n' newline_list list1 - { $$ = command_connect ($1, $4, ';'); } - | pipeline_command - { $$ = $1; } - ; - -simple_list_terminator: '\n' - | yacc_EOF - ; - -list_terminator:'\n' - { $$ = '\n'; } - | ';' - { $$ = ';'; } - | yacc_EOF - { $$ = yacc_EOF; } - ; - -newline_list: - | newline_list '\n' - ; - -/* A simple_list is a list that contains no significant newlines - and no leading or trailing newlines. Newlines are allowed - only following operators, where they are not significant. - - This is what an inputunit consists of. */ - -simple_list: simple_list1 - { - $$ = $1; - if (need_here_doc) - gather_here_documents (); - if ((parser_state & PST_CMDSUBST) && current_token == shell_eof_token) - { - global_command = $1; - eof_encountered = 0; - rewind_input_string (); - YYACCEPT; - } - } - | simple_list1 '&' - { - if ($1->type == cm_connection) - $$ = connect_async_list ($1, (COMMAND *)NULL, '&'); - else - $$ = command_connect ($1, (COMMAND *)NULL, '&'); - if (need_here_doc) - gather_here_documents (); - if ((parser_state & PST_CMDSUBST) && current_token == shell_eof_token) - { - global_command = $1; - eof_encountered = 0; - rewind_input_string (); - YYACCEPT; - } - } - | simple_list1 ';' - { - $$ = $1; - if (need_here_doc) - gather_here_documents (); - if ((parser_state & PST_CMDSUBST) && current_token == shell_eof_token) - { - global_command = $1; - eof_encountered = 0; - rewind_input_string (); - YYACCEPT; - } - } - ; - -simple_list1: simple_list1 AND_AND newline_list simple_list1 - { $$ = command_connect ($1, $4, AND_AND); } - | simple_list1 OR_OR newline_list simple_list1 - { $$ = command_connect ($1, $4, OR_OR); } - | simple_list1 '&' simple_list1 - { - if ($1->type == cm_connection) - $$ = connect_async_list ($1, $3, '&'); - else - $$ = command_connect ($1, $3, '&'); - } - | simple_list1 ';' simple_list1 - { $$ = command_connect ($1, $3, ';'); } - - | pipeline_command - { $$ = $1; } - ; - -pipeline_command: pipeline - { $$ = $1; } - | BANG pipeline_command - { - if ($2) - $2->flags ^= CMD_INVERT_RETURN; /* toggle */ - $$ = $2; - } - | timespec pipeline_command - { - if ($2) - $2->flags |= $1; - $$ = $2; - } - | timespec list_terminator - { - ELEMENT x; - - /* Boy, this is unclean. `time' by itself can - time a null command. We cheat and push a - newline back if the list_terminator was a newline - to avoid the double-newline problem (one to - terminate this, one to terminate the command) */ - x.word = 0; - x.redirect = 0; - $$ = make_simple_command (x, (COMMAND *)NULL); - $$->flags |= $1; - /* XXX - let's cheat and push a newline back */ - if ($2 == '\n') - token_to_read = '\n'; - } - | BANG list_terminator - { - ELEMENT x; - - /* This is just as unclean. Posix says that `!' - by itself should be equivalent to `false'. - We cheat and push a - newline back if the list_terminator was a newline - to avoid the double-newline problem (one to - terminate this, one to terminate the command) */ - x.word = 0; - x.redirect = 0; - $$ = make_simple_command (x, (COMMAND *)NULL); - $$->flags |= CMD_INVERT_RETURN; - /* XXX - let's cheat and push a newline back */ - if ($2 == '\n') - token_to_read = '\n'; - } - ; - -pipeline: pipeline '|' newline_list pipeline - { $$ = command_connect ($1, $4, '|'); } - | pipeline BAR_AND newline_list pipeline - { - /* Make cmd1 |& cmd2 equivalent to cmd1 2>&1 | cmd2 */ - COMMAND *tc; - REDIRECTEE rd, sd; - REDIRECT *r; - - tc = $1->type == cm_simple ? (COMMAND *)$1->value.Simple : $1; - sd.dest = 2; - rd.dest = 1; - r = make_redirection (sd, r_duplicating_output, rd, 0); - if (tc->redirects) - { - register REDIRECT *t; - for (t = tc->redirects; t->next; t = t->next) - ; - t->next = r; - } - else - tc->redirects = r; - - $$ = command_connect ($1, $4, '|'); - } - | command - { $$ = $1; } - ; - -timespec: TIME - { $$ = CMD_TIME_PIPELINE; } - | TIME TIMEOPT - { $$ = CMD_TIME_PIPELINE|CMD_TIME_POSIX; } - | TIME TIMEOPT TIMEIGN - { $$ = CMD_TIME_PIPELINE|CMD_TIME_POSIX; } - ; -%% - -/* Initial size to allocate for tokens, and the - amount to grow them by. */ -#define TOKEN_DEFAULT_INITIAL_SIZE 496 -#define TOKEN_DEFAULT_GROW_SIZE 512 - -/* Should we call prompt_again? */ -#define SHOULD_PROMPT() \ - (interactive && (bash_input.type == st_stdin || bash_input.type == st_stream)) - -#if defined (ALIAS) -# define expanding_alias() (pushed_string_list && pushed_string_list->expander) -#else -# define expanding_alias() 0 -#endif - -/* Global var is non-zero when end of file has been reached. */ -int EOF_Reached = 0; - -#ifdef DEBUG -static void -debug_parser (i) - int i; -{ -#if YYDEBUG != 0 - yydebug = i; -#endif -} -#endif - -/* yy_getc () returns the next available character from input or EOF. - yy_ungetc (c) makes `c' the next character to read. - init_yy_io (get, unget, type, location) makes the function GET the - installed function for getting the next character, makes UNGET the - installed function for un-getting a character, sets the type of stream - (either string or file) from TYPE, and makes LOCATION point to where - the input is coming from. */ - -/* Unconditionally returns end-of-file. */ -int -return_EOF () -{ - return (EOF); -} - -/* Variable containing the current get and unget functions. - See ./input.h for a clearer description. */ -BASH_INPUT bash_input; - -/* Set all of the fields in BASH_INPUT to NULL. Free bash_input.name if it - is non-null, avoiding a memory leak. */ -void -initialize_bash_input () -{ - bash_input.type = st_none; - FREE (bash_input.name); - bash_input.name = (char *)NULL; - bash_input.location.file = (FILE *)NULL; - bash_input.location.string = (char *)NULL; - bash_input.getter = (sh_cget_func_t *)NULL; - bash_input.ungetter = (sh_cunget_func_t *)NULL; -} - -/* Set the contents of the current bash input stream from - GET, UNGET, TYPE, NAME, and LOCATION. */ -void -init_yy_io (get, unget, type, name, location) - sh_cget_func_t *get; - sh_cunget_func_t *unget; - enum stream_type type; - const char *name; - INPUT_STREAM location; -{ - bash_input.type = type; - FREE (bash_input.name); - bash_input.name = name ? savestring (name) : (char *)NULL; - - /* XXX */ -#if defined (CRAY) - memcpy((char *)&bash_input.location.string, (char *)&location.string, sizeof(location)); -#else - bash_input.location = location; -#endif - bash_input.getter = get; - bash_input.ungetter = unget; -} - -char * -yy_input_name () -{ - return (bash_input.name ? bash_input.name : "stdin"); -} - -/* Call this to get the next character of input. */ -static int -yy_getc () -{ - return (*(bash_input.getter)) (); -} - -/* Call this to unget C. That is, to make C the next character - to be read. */ -static int -yy_ungetc (c) - int c; -{ - return (*(bash_input.ungetter)) (c); -} - -#if defined (BUFFERED_INPUT) -#ifdef INCLUDE_UNUSED -int -input_file_descriptor () -{ - switch (bash_input.type) - { - case st_stream: - return (fileno (bash_input.location.file)); - case st_bstream: - return (bash_input.location.buffered_fd); - case st_stdin: - default: - return (fileno (stdin)); - } -} -#endif -#endif /* BUFFERED_INPUT */ - -/* **************************************************************** */ -/* */ -/* Let input be read from readline (). */ -/* */ -/* **************************************************************** */ - -#if defined (READLINE) -char *current_readline_prompt = (char *)NULL; -char *current_readline_line = (char *)NULL; -int current_readline_line_index = 0; - -static int -yy_readline_get () -{ - SigHandler *old_sigint; - int line_len; - unsigned char c; - - if (!current_readline_line) - { - if (!bash_readline_initialized) - initialize_readline (); - -#if defined (JOB_CONTROL) - if (job_control) - give_terminal_to (shell_pgrp, 0); -#endif /* JOB_CONTROL */ - - old_sigint = (SigHandler *)IMPOSSIBLE_TRAP_HANDLER; - if (signal_is_ignored (SIGINT) == 0) - { - interrupt_immediately++; - old_sigint = (SigHandler *)set_signal_handler (SIGINT, sigint_sighandler); - } - - current_readline_line = readline (current_readline_prompt ? - current_readline_prompt : ""); - - CHECK_TERMSIG; - if (signal_is_ignored (SIGINT) == 0) - { - interrupt_immediately--; - if (old_sigint != IMPOSSIBLE_TRAP_HANDLER) - set_signal_handler (SIGINT, old_sigint); - } - -#if 0 - /* Reset the prompt to the decoded value of prompt_string_pointer. */ - reset_readline_prompt (); -#endif - - if (current_readline_line == 0) - return (EOF); - - current_readline_line_index = 0; - line_len = strlen (current_readline_line); - - current_readline_line = (char *)xrealloc (current_readline_line, 2 + line_len); - current_readline_line[line_len++] = '\n'; - current_readline_line[line_len] = '\0'; - } - - if (current_readline_line[current_readline_line_index] == 0) - { - free (current_readline_line); - current_readline_line = (char *)NULL; - return (yy_readline_get ()); - } - else - { - c = current_readline_line[current_readline_line_index++]; - return (c); - } -} - -static int -yy_readline_unget (c) - int c; -{ - if (current_readline_line_index && current_readline_line) - current_readline_line[--current_readline_line_index] = c; - return (c); -} - -void -with_input_from_stdin () -{ - INPUT_STREAM location; - - if (bash_input.type != st_stdin && stream_on_stack (st_stdin) == 0) - { - location.string = current_readline_line; - init_yy_io (yy_readline_get, yy_readline_unget, - st_stdin, "readline stdin", location); - } -} - -#else /* !READLINE */ - -void -with_input_from_stdin () -{ - with_input_from_stream (stdin, "stdin"); -} -#endif /* !READLINE */ - -/* **************************************************************** */ -/* */ -/* Let input come from STRING. STRING is zero terminated. */ -/* */ -/* **************************************************************** */ - -static int -yy_string_get () -{ - register char *string; - register unsigned char c; - - string = bash_input.location.string; - - /* If the string doesn't exist, or is empty, EOF found. */ - if (string && *string) - { - c = *string++; - bash_input.location.string = string; - return (c); - } - else - return (EOF); -} - -static int -yy_string_unget (c) - int c; -{ - *(--bash_input.location.string) = c; - return (c); -} - -void -with_input_from_string (string, name) - char *string; - const char *name; -{ - INPUT_STREAM location; - - location.string = string; - init_yy_io (yy_string_get, yy_string_unget, st_string, name, location); -} - -/* Count the number of characters we've consumed from bash_input.location.string - and read into shell_input_line, but have not returned from shell_getc. - That is the true input location. Rewind bash_input.location.string by - that number of characters, so it points to the last character actually - consumed by the parser. */ -static void -rewind_input_string () -{ - int xchars; - - /* number of unconsumed characters in the input -- XXX need to take newlines - into account, e.g., $(...\n) */ - xchars = shell_input_line_len - shell_input_line_index; - if (bash_input.location.string[-1] == '\n') - xchars++; - - /* XXX - how to reflect bash_input.location.string back to string passed to - parse_and_execute or xparse_dolparen? xparse_dolparen needs to know how - far into the string we parsed. parse_and_execute knows where bash_input. - location.string is, and how far from orig_string that is -- that's the - number of characters the command consumed. */ - - /* bash_input.location.string - xchars should be where we parsed to */ - /* need to do more validation on xchars value for sanity -- test cases. */ - bash_input.location.string -= xchars; -} - -/* **************************************************************** */ -/* */ -/* Let input come from STREAM. */ -/* */ -/* **************************************************************** */ - -/* These two functions used to test the value of the HAVE_RESTARTABLE_SYSCALLS - define, and just use getc/ungetc if it was defined, but since bash - installs its signal handlers without the SA_RESTART flag, some signals - (like SIGCHLD, SIGWINCH, etc.) received during a read(2) will not cause - the read to be restarted. We need to restart it ourselves. */ - -static int -yy_stream_get () -{ - int result; - - result = EOF; - if (bash_input.location.file) - { - if (interactive) - interrupt_immediately++; - - /* XXX - don't need terminate_immediately; getc_with_restart checks - for terminating signals itself if read returns < 0 */ - result = getc_with_restart (bash_input.location.file); - - if (interactive) - interrupt_immediately--; - - } - return (result); -} - -static int -yy_stream_unget (c) - int c; -{ - return (ungetc_with_restart (c, bash_input.location.file)); -} - -void -with_input_from_stream (stream, name) - FILE *stream; - const char *name; -{ - INPUT_STREAM location; - - location.file = stream; - init_yy_io (yy_stream_get, yy_stream_unget, st_stream, name, location); -} - -typedef struct stream_saver { - struct stream_saver *next; - BASH_INPUT bash_input; - int line; -#if defined (BUFFERED_INPUT) - BUFFERED_STREAM *bstream; -#endif /* BUFFERED_INPUT */ -} STREAM_SAVER; - -/* The globally known line number. */ -int line_number = 0; - -/* The line number offset set by assigning to LINENO. Not currently used. */ -int line_number_base = 0; - -#if defined (COND_COMMAND) -static int cond_lineno; -static int cond_token; -#endif - -STREAM_SAVER *stream_list = (STREAM_SAVER *)NULL; - -void -push_stream (reset_lineno) - int reset_lineno; -{ - STREAM_SAVER *saver = (STREAM_SAVER *)xmalloc (sizeof (STREAM_SAVER)); - - xbcopy ((char *)&bash_input, (char *)&(saver->bash_input), sizeof (BASH_INPUT)); - -#if defined (BUFFERED_INPUT) - saver->bstream = (BUFFERED_STREAM *)NULL; - /* If we have a buffered stream, clear out buffers[fd]. */ - if (bash_input.type == st_bstream && bash_input.location.buffered_fd >= 0) - saver->bstream = set_buffered_stream (bash_input.location.buffered_fd, - (BUFFERED_STREAM *)NULL); -#endif /* BUFFERED_INPUT */ - - saver->line = line_number; - bash_input.name = (char *)NULL; - saver->next = stream_list; - stream_list = saver; - EOF_Reached = 0; - if (reset_lineno) - line_number = 0; -} - -void -pop_stream () -{ - if (!stream_list) - EOF_Reached = 1; - else - { - STREAM_SAVER *saver = stream_list; - - EOF_Reached = 0; - stream_list = stream_list->next; - - init_yy_io (saver->bash_input.getter, - saver->bash_input.ungetter, - saver->bash_input.type, - saver->bash_input.name, - saver->bash_input.location); - -#if defined (BUFFERED_INPUT) - /* If we have a buffered stream, restore buffers[fd]. */ - /* If the input file descriptor was changed while this was on the - save stack, update the buffered fd to the new file descriptor and - re-establish the buffer <-> bash_input fd correspondence. */ - if (bash_input.type == st_bstream && bash_input.location.buffered_fd >= 0) - { - if (bash_input_fd_changed) - { - bash_input_fd_changed = 0; - if (default_buffered_input >= 0) - { - bash_input.location.buffered_fd = default_buffered_input; - saver->bstream->b_fd = default_buffered_input; - SET_CLOSE_ON_EXEC (default_buffered_input); - } - } - /* XXX could free buffered stream returned as result here. */ - set_buffered_stream (bash_input.location.buffered_fd, saver->bstream); - } -#endif /* BUFFERED_INPUT */ - - line_number = saver->line; - - FREE (saver->bash_input.name); - free (saver); - } -} - -/* Return 1 if a stream of type TYPE is saved on the stack. */ -int -stream_on_stack (type) - enum stream_type type; -{ - register STREAM_SAVER *s; - - for (s = stream_list; s; s = s->next) - if (s->bash_input.type == type) - return 1; - return 0; -} - -/* Save the current token state and return it in a malloced array. */ -int * -save_token_state () -{ - int *ret; - - ret = (int *)xmalloc (4 * sizeof (int)); - ret[0] = last_read_token; - ret[1] = token_before_that; - ret[2] = two_tokens_ago; - ret[3] = current_token; - return ret; -} - -void -restore_token_state (ts) - int *ts; -{ - if (ts == 0) - return; - last_read_token = ts[0]; - token_before_that = ts[1]; - two_tokens_ago = ts[2]; - current_token = ts[3]; -} - -/* - * This is used to inhibit alias expansion and reserved word recognition - * inside case statement pattern lists. A `case statement pattern list' is: - * - * everything between the `in' in a `case word in' and the next ')' - * or `esac' - * everything between a `;;' and the next `)' or `esac' - */ - -#if defined (ALIAS) || defined (DPAREN_ARITHMETIC) - -#define END_OF_ALIAS 0 - -/* - * Pseudo-global variables used in implementing token-wise alias expansion. - */ - -/* - * Pushing and popping strings. This works together with shell_getc to - * implement alias expansion on a per-token basis. - */ - -typedef struct string_saver { - struct string_saver *next; - int expand_alias; /* Value to set expand_alias to when string is popped. */ - char *saved_line; -#if defined (ALIAS) - alias_t *expander; /* alias that caused this line to be pushed. */ -#endif - int saved_line_size, saved_line_index, saved_line_terminator; -} STRING_SAVER; - -STRING_SAVER *pushed_string_list = (STRING_SAVER *)NULL; - -/* - * Push the current shell_input_line onto a stack of such lines and make S - * the current input. Used when expanding aliases. EXPAND is used to set - * the value of expand_next_token when the string is popped, so that the - * word after the alias in the original line is handled correctly when the - * alias expands to multiple words. TOKEN is the token that was expanded - * into S; it is saved and used to prevent infinite recursive expansion. - */ -static void -push_string (s, expand, ap) - char *s; - int expand; - alias_t *ap; -{ - STRING_SAVER *temp = (STRING_SAVER *)xmalloc (sizeof (STRING_SAVER)); - - temp->expand_alias = expand; - temp->saved_line = shell_input_line; - temp->saved_line_size = shell_input_line_size; - temp->saved_line_index = shell_input_line_index; - temp->saved_line_terminator = shell_input_line_terminator; -#if defined (ALIAS) - temp->expander = ap; -#endif - temp->next = pushed_string_list; - pushed_string_list = temp; - -#if defined (ALIAS) - if (ap) - ap->flags |= AL_BEINGEXPANDED; -#endif - - shell_input_line = s; - shell_input_line_size = strlen (s); - shell_input_line_index = 0; - shell_input_line_terminator = '\0'; -#if 0 - parser_state &= ~PST_ALEXPNEXT; /* XXX */ -#endif - - set_line_mbstate (); -} - -/* - * Make the top of the pushed_string stack be the current shell input. - * Only called when there is something on the stack. Called from shell_getc - * when it thinks it has consumed the string generated by an alias expansion - * and needs to return to the original input line. - */ -static void -pop_string () -{ - STRING_SAVER *t; - - FREE (shell_input_line); - shell_input_line = pushed_string_list->saved_line; - shell_input_line_index = pushed_string_list->saved_line_index; - shell_input_line_size = pushed_string_list->saved_line_size; - shell_input_line_terminator = pushed_string_list->saved_line_terminator; - - if (pushed_string_list->expand_alias) - parser_state |= PST_ALEXPNEXT; - else - parser_state &= ~PST_ALEXPNEXT; - - t = pushed_string_list; - pushed_string_list = pushed_string_list->next; - -#if defined (ALIAS) - if (t->expander) - t->expander->flags &= ~AL_BEINGEXPANDED; -#endif - - free ((char *)t); - - set_line_mbstate (); -} - -static void -free_string_list () -{ - register STRING_SAVER *t, *t1; - - for (t = pushed_string_list; t; ) - { - t1 = t->next; - FREE (t->saved_line); -#if defined (ALIAS) - if (t->expander) - t->expander->flags &= ~AL_BEINGEXPANDED; -#endif - free ((char *)t); - t = t1; - } - pushed_string_list = (STRING_SAVER *)NULL; -} - -#endif /* ALIAS || DPAREN_ARITHMETIC */ - -void -free_pushed_string_input () -{ -#if defined (ALIAS) || defined (DPAREN_ARITHMETIC) - free_string_list (); -#endif -} - -/* Return a line of text, taken from wherever yylex () reads input. - If there is no more input, then we return NULL. If REMOVE_QUOTED_NEWLINE - is non-zero, we remove unquoted \ pairs. This is used by - read_secondary_line to read here documents. */ -static char * -read_a_line (remove_quoted_newline) - int remove_quoted_newline; -{ - static char *line_buffer = (char *)NULL; - static int buffer_size = 0; - int indx, c, peekc, pass_next; - -#if defined (READLINE) - if (no_line_editing && SHOULD_PROMPT ()) -#else - if (SHOULD_PROMPT ()) -#endif - print_prompt (); - - pass_next = indx = 0; - while (1) - { - /* Allow immediate exit if interrupted during input. */ - QUIT; - - c = yy_getc (); - - /* Ignore null bytes in input. */ - if (c == 0) - { -#if 0 - internal_warning ("read_a_line: ignored null byte in input"); -#endif - continue; - } - - /* If there is no more input, then we return NULL. */ - if (c == EOF) - { - if (interactive && bash_input.type == st_stream) - clearerr (stdin); - if (indx == 0) - return ((char *)NULL); - c = '\n'; - } - - /* `+2' in case the final character in the buffer is a newline. */ - RESIZE_MALLOCED_BUFFER (line_buffer, indx, 2, buffer_size, 128); - - /* IF REMOVE_QUOTED_NEWLINES is non-zero, we are reading a - here document with an unquoted delimiter. In this case, - the line will be expanded as if it were in double quotes. - We allow a backslash to escape the next character, but we - need to treat the backslash specially only if a backslash - quoting a backslash-newline pair appears in the line. */ - if (pass_next) - { - line_buffer[indx++] = c; - pass_next = 0; - } - else if (c == '\\' && remove_quoted_newline) - { - QUIT; - peekc = yy_getc (); - if (peekc == '\n') - { - line_number++; - continue; /* Make the unquoted \ pair disappear. */ - } - else - { - yy_ungetc (peekc); - pass_next = 1; - line_buffer[indx++] = c; /* Preserve the backslash. */ - } - } - else - line_buffer[indx++] = c; - - if (c == '\n') - { - line_buffer[indx] = '\0'; - return (line_buffer); - } - } -} - -/* Return a line as in read_a_line (), but insure that the prompt is - the secondary prompt. This is used to read the lines of a here - document. REMOVE_QUOTED_NEWLINE is non-zero if we should remove - newlines quoted with backslashes while reading the line. It is - non-zero unless the delimiter of the here document was quoted. */ -char * -read_secondary_line (remove_quoted_newline) - int remove_quoted_newline; -{ - char *ret; - int n, c; - - prompt_string_pointer = &ps2_prompt; - if (SHOULD_PROMPT()) - prompt_again (); - ret = read_a_line (remove_quoted_newline); -#if defined (HISTORY) - if (ret && remember_on_history && (parser_state & PST_HEREDOC)) - { - /* To make adding the the here-document body right, we need to rely - on history_delimiting_chars() returning \n for the first line of - the here-document body and the null string for the second and - subsequent lines, so we avoid double newlines. - current_command_line_count == 2 for the first line of the body. */ - - current_command_line_count++; - maybe_add_history (ret); - } -#endif /* HISTORY */ - return ret; -} - -/* **************************************************************** */ -/* */ -/* YYLEX () */ -/* */ -/* **************************************************************** */ - -/* Reserved words. These are only recognized as the first word of a - command. */ -STRING_INT_ALIST word_token_alist[] = { - { "if", IF }, - { "then", THEN }, - { "else", ELSE }, - { "elif", ELIF }, - { "fi", FI }, - { "case", CASE }, - { "esac", ESAC }, - { "for", FOR }, -#if defined (SELECT_COMMAND) - { "select", SELECT }, -#endif - { "while", WHILE }, - { "until", UNTIL }, - { "do", DO }, - { "done", DONE }, - { "in", IN }, - { "function", FUNCTION }, -#if defined (COMMAND_TIMING) - { "time", TIME }, -#endif - { "{", '{' }, - { "}", '}' }, - { "!", BANG }, -#if defined (COND_COMMAND) - { "[[", COND_START }, - { "]]", COND_END }, -#endif -#if defined (COPROCESS_SUPPORT) - { "coproc", COPROC }, -#endif - { (char *)NULL, 0} -}; - -/* other tokens that can be returned by read_token() */ -STRING_INT_ALIST other_token_alist[] = { - /* Multiple-character tokens with special values */ - { "--", TIMEIGN }, - { "-p", TIMEOPT }, - { "&&", AND_AND }, - { "||", OR_OR }, - { ">>", GREATER_GREATER }, - { "<<", LESS_LESS }, - { "<&", LESS_AND }, - { ">&", GREATER_AND }, - { ";;", SEMI_SEMI }, - { ";&", SEMI_AND }, - { ";;&", SEMI_SEMI_AND }, - { "<<-", LESS_LESS_MINUS }, - { "<<<", LESS_LESS_LESS }, - { "&>", AND_GREATER }, - { "&>>", AND_GREATER_GREATER }, - { "<>", LESS_GREATER }, - { ">|", GREATER_BAR }, - { "|&", BAR_AND }, - { "EOF", yacc_EOF }, - /* Tokens whose value is the character itself */ - { ">", '>' }, - { "<", '<' }, - { "-", '-' }, - { "{", '{' }, - { "}", '}' }, - { ";", ';' }, - { "(", '(' }, - { ")", ')' }, - { "|", '|' }, - { "&", '&' }, - { "newline", '\n' }, - { (char *)NULL, 0} -}; - -/* others not listed here: - WORD look at yylval.word - ASSIGNMENT_WORD look at yylval.word - NUMBER look at yylval.number - ARITH_CMD look at yylval.word_list - ARITH_FOR_EXPRS look at yylval.word_list - COND_CMD look at yylval.command -*/ - -/* These are used by read_token_word, but appear up here so that shell_getc - can use them to decide when to add otherwise blank lines to the history. */ - -/* The primary delimiter stack. */ -struct dstack dstack = { (char *)NULL, 0, 0 }; - -/* A temporary delimiter stack to be used when decoding prompt strings. - This is needed because command substitutions in prompt strings (e.g., PS2) - can screw up the parser's quoting state. */ -static struct dstack temp_dstack = { (char *)NULL, 0, 0 }; - -/* Macro for accessing the top delimiter on the stack. Returns the - delimiter or zero if none. */ -#define current_delimiter(ds) \ - (ds.delimiter_depth ? ds.delimiters[ds.delimiter_depth - 1] : 0) - -#define push_delimiter(ds, character) \ - do \ - { \ - if (ds.delimiter_depth + 2 > ds.delimiter_space) \ - ds.delimiters = (char *)xrealloc \ - (ds.delimiters, (ds.delimiter_space += 10) * sizeof (char)); \ - ds.delimiters[ds.delimiter_depth] = character; \ - ds.delimiter_depth++; \ - } \ - while (0) - -#define pop_delimiter(ds) ds.delimiter_depth-- - -/* Return the next shell input character. This always reads characters - from shell_input_line; when that line is exhausted, it is time to - read the next line. This is called by read_token when the shell is - processing normal command input. */ - -/* This implements one-character lookahead/lookbehind across physical input - lines, to avoid something being lost because it's pushed back with - shell_ungetc when we're at the start of a line. */ -static int eol_ungetc_lookahead = 0; - -static int -shell_getc (remove_quoted_newline) - int remove_quoted_newline; -{ - register int i; - int c; - unsigned char uc; - - QUIT; - - if (sigwinch_received) - { - sigwinch_received = 0; - get_new_window_size (0, (int *)0, (int *)0); - } - - if (eol_ungetc_lookahead) - { - c = eol_ungetc_lookahead; - eol_ungetc_lookahead = 0; - return (c); - } - -#if defined (ALIAS) || defined (DPAREN_ARITHMETIC) - /* If shell_input_line[shell_input_line_index] == 0, but there is - something on the pushed list of strings, then we don't want to go - off and get another line. We let the code down below handle it. */ - - if (!shell_input_line || ((!shell_input_line[shell_input_line_index]) && - (pushed_string_list == (STRING_SAVER *)NULL))) -#else /* !ALIAS && !DPAREN_ARITHMETIC */ - if (!shell_input_line || !shell_input_line[shell_input_line_index]) -#endif /* !ALIAS && !DPAREN_ARITHMETIC */ - { - line_number++; - - restart_read: - - /* Allow immediate exit if interrupted during input. */ - QUIT; - - i = 0; - shell_input_line_terminator = 0; - - /* If the shell is interatctive, but not currently printing a prompt - (interactive_shell && interactive == 0), we don't want to print - notifies or cleanup the jobs -- we want to defer it until we do - print the next prompt. */ - if (interactive_shell == 0 || SHOULD_PROMPT()) - { -#if defined (JOB_CONTROL) - /* This can cause a problem when reading a command as the result - of a trap, when the trap is called from flush_child. This call - had better not cause jobs to disappear from the job table in - that case, or we will have big trouble. */ - notify_and_cleanup (); -#else /* !JOB_CONTROL */ - cleanup_dead_jobs (); -#endif /* !JOB_CONTROL */ - } - -#if defined (READLINE) - if (no_line_editing && SHOULD_PROMPT()) -#else - if (SHOULD_PROMPT()) -#endif - print_prompt (); - - if (bash_input.type == st_stream) - clearerr (stdin); - - while (1) - { - c = yy_getc (); - - /* Allow immediate exit if interrupted during input. */ - QUIT; - - if (c == '\0') - { -#if 0 - internal_warning ("shell_getc: ignored null byte in input"); -#endif - continue; - } - - RESIZE_MALLOCED_BUFFER (shell_input_line, i, 2, shell_input_line_size, 256); - - if (c == EOF) - { - if (bash_input.type == st_stream) - clearerr (stdin); - - if (i == 0) - shell_input_line_terminator = EOF; - - shell_input_line[i] = '\0'; - break; - } - - shell_input_line[i++] = c; - - if (c == '\n') - { - shell_input_line[--i] = '\0'; - current_command_line_count++; - break; - } - } - - shell_input_line_index = 0; - shell_input_line_len = i; /* == strlen (shell_input_line) */ - - set_line_mbstate (); - -#if defined (HISTORY) - if (remember_on_history && shell_input_line && shell_input_line[0]) - { - char *expansions; -# if defined (BANG_HISTORY) - int old_hist; - - /* If the current delimiter is a single quote, we should not be - performing history expansion, even if we're on a different - line from the original single quote. */ - old_hist = history_expansion_inhibited; - if (current_delimiter (dstack) == '\'') - history_expansion_inhibited = 1; -# endif - expansions = pre_process_line (shell_input_line, 1, 1); -# if defined (BANG_HISTORY) - history_expansion_inhibited = old_hist; -# endif - if (expansions != shell_input_line) - { - free (shell_input_line); - shell_input_line = expansions; - shell_input_line_len = shell_input_line ? - strlen (shell_input_line) : 0; - if (shell_input_line_len == 0) - current_command_line_count--; - - /* We have to force the xrealloc below because we don't know - the true allocated size of shell_input_line anymore. */ - shell_input_line_size = shell_input_line_len; - - set_line_mbstate (); - } - } - /* Try to do something intelligent with blank lines encountered while - entering multi-line commands. XXX - this is grotesque */ - else if (remember_on_history && shell_input_line && - shell_input_line[0] == '\0' && - current_command_line_count > 1) - { - if (current_delimiter (dstack)) - /* We know shell_input_line[0] == 0 and we're reading some sort of - quoted string. This means we've got a line consisting of only - a newline in a quoted string. We want to make sure this line - gets added to the history. */ - maybe_add_history (shell_input_line); - else - { - char *hdcs; - hdcs = history_delimiting_chars (shell_input_line); - if (hdcs && hdcs[0] == ';') - maybe_add_history (shell_input_line); - } - } - -#endif /* HISTORY */ - - if (shell_input_line) - { - /* Lines that signify the end of the shell's input should not be - echoed. */ - if (echo_input_at_read && (shell_input_line[0] || - shell_input_line_terminator != EOF)) - fprintf (stderr, "%s\n", shell_input_line); - } - else - { - shell_input_line_size = 0; - prompt_string_pointer = ¤t_prompt_string; - if (SHOULD_PROMPT ()) - prompt_again (); - goto restart_read; - } - - /* Add the newline to the end of this string, iff the string does - not already end in an EOF character. */ - if (shell_input_line_terminator != EOF) - { - if (shell_input_line_len + 3 > shell_input_line_size) - shell_input_line = (char *)xrealloc (shell_input_line, - 1 + (shell_input_line_size += 2)); - - shell_input_line[shell_input_line_len] = '\n'; - shell_input_line[shell_input_line_len + 1] = '\0'; - - set_line_mbstate (); - } - } - -next_alias_char: - uc = shell_input_line[shell_input_line_index]; - - if (uc) - shell_input_line_index++; - -#if defined (ALIAS) || defined (DPAREN_ARITHMETIC) - /* If UC is NULL, we have reached the end of the current input string. If - pushed_string_list is non-empty, it's time to pop to the previous string - because we have fully consumed the result of the last alias expansion. - Do it transparently; just return the next character of the string popped - to. */ -pop_alias: - if (uc == 0 && (pushed_string_list != (STRING_SAVER *)NULL)) - { - pop_string (); - uc = shell_input_line[shell_input_line_index]; - if (uc) - shell_input_line_index++; - } -#endif /* ALIAS || DPAREN_ARITHMETIC */ - - if MBTEST(uc == '\\' && remove_quoted_newline && shell_input_line[shell_input_line_index] == '\n') - { - if (SHOULD_PROMPT ()) - prompt_again (); - line_number++; - /* What do we do here if we're expanding an alias whose definition - includes an escaped newline? If that's the last character in the - alias expansion, we just pop the pushed string list (recall that - we inhibit the appending of a space in mk_alexpansion() if newline - is the last character). If it's not the last character, we need - to consume the quoted newline and move to the next character in - the expansion. */ -#if defined (ALIAS) - if (expanding_alias () && shell_input_line[shell_input_line_index+1] == '\0') - { - uc = 0; - goto pop_alias; - } - else if (expanding_alias () && shell_input_line[shell_input_line_index+1] != '\0') - { - shell_input_line_index++; /* skip newline */ - goto next_alias_char; /* and get next character */ - } - else -#endif - goto restart_read; - } - - if (uc == 0 && shell_input_line_terminator == EOF) - return ((shell_input_line_index != 0) ? '\n' : EOF); - - return (uc); -} - -/* Put C back into the input for the shell. This might need changes for - HANDLE_MULTIBYTE around EOLs. Since we (currently) never push back a - character different than we read, shell_input_line_property doesn't need - to change when manipulating shell_input_line. The define for - last_shell_getc_is_singlebyte should take care of it, though. */ -static void -shell_ungetc (c) - int c; -{ - if (shell_input_line && shell_input_line_index) - shell_input_line[--shell_input_line_index] = c; - else - eol_ungetc_lookahead = c; -} - -#ifdef INCLUDE_UNUSED -/* Back the input pointer up by one, effectively `ungetting' a character. */ -static void -shell_ungetchar () -{ - if (shell_input_line && shell_input_line_index) - shell_input_line_index--; -} -#endif - -/* Discard input until CHARACTER is seen, then push that character back - onto the input stream. */ -static void -discard_until (character) - int character; -{ - int c; - - while ((c = shell_getc (0)) != EOF && c != character) - ; - - if (c != EOF) - shell_ungetc (c); -} - -void -execute_variable_command (command, vname) - char *command, *vname; -{ - char *last_lastarg; - sh_parser_state_t ps; - - save_parser_state (&ps); - last_lastarg = get_string_value ("_"); - if (last_lastarg) - last_lastarg = savestring (last_lastarg); - - parse_and_execute (savestring (command), vname, SEVAL_NONINT|SEVAL_NOHIST); - - restore_parser_state (&ps); - bind_variable ("_", last_lastarg, 0); - FREE (last_lastarg); - - if (token_to_read == '\n') /* reset_parser was called */ - token_to_read = 0; -} - -/* Place to remember the token. We try to keep the buffer - at a reasonable size, but it can grow. */ -static char *token = (char *)NULL; - -/* Current size of the token buffer. */ -static int token_buffer_size; - -/* Command to read_token () explaining what we want it to do. */ -#define READ 0 -#define RESET 1 -#define prompt_is_ps1 \ - (!prompt_string_pointer || prompt_string_pointer == &ps1_prompt) - -/* Function for yyparse to call. yylex keeps track of - the last two tokens read, and calls read_token. */ -static int -yylex () -{ - if (interactive && (current_token == 0 || current_token == '\n')) - { - /* Before we print a prompt, we might have to check mailboxes. - We do this only if it is time to do so. Notice that only here - is the mail alarm reset; nothing takes place in check_mail () - except the checking of mail. Please don't change this. */ - if (prompt_is_ps1 && parse_and_execute_level == 0 && time_to_check_mail ()) - { - check_mail (); - reset_mail_timer (); - } - - /* Avoid printing a prompt if we're not going to read anything, e.g. - after resetting the parser with read_token (RESET). */ - if (token_to_read == 0 && SHOULD_PROMPT ()) - prompt_again (); - } - - two_tokens_ago = token_before_that; - token_before_that = last_read_token; - last_read_token = current_token; - current_token = read_token (READ); - - if ((parser_state & PST_EOFTOKEN) && current_token == shell_eof_token) - { - current_token = yacc_EOF; - if (bash_input.type == st_string) - rewind_input_string (); - } - parser_state &= ~PST_EOFTOKEN; - - return (current_token); -} - -/* When non-zero, we have read the required tokens - which allow ESAC to be the next one read. */ -static int esacs_needed_count; - -void -gather_here_documents () -{ - int r; - - r = 0; - while (need_here_doc) - { - parser_state |= PST_HEREDOC; - make_here_document (redir_stack[r++], line_number); - parser_state &= ~PST_HEREDOC; - need_here_doc--; - } -} - -/* When non-zero, an open-brace used to create a group is awaiting a close - brace partner. */ -static int open_brace_count; - -#define command_token_position(token) \ - (((token) == ASSIGNMENT_WORD) || (parser_state&PST_REDIRLIST) || \ - ((token) != SEMI_SEMI && (token) != SEMI_AND && (token) != SEMI_SEMI_AND && reserved_word_acceptable(token))) - -#define assignment_acceptable(token) \ - (command_token_position(token) && ((parser_state & PST_CASEPAT) == 0)) - -/* Check to see if TOKEN is a reserved word and return the token - value if it is. */ -#define CHECK_FOR_RESERVED_WORD(tok) \ - do { \ - if (!dollar_present && !quoted && \ - reserved_word_acceptable (last_read_token)) \ - { \ - int i; \ - for (i = 0; word_token_alist[i].word != (char *)NULL; i++) \ - if (STREQ (tok, word_token_alist[i].word)) \ - { \ - if ((parser_state & PST_CASEPAT) && (word_token_alist[i].token != ESAC)) \ - break; \ - if (word_token_alist[i].token == TIME && time_command_acceptable () == 0) \ - break; \ - if (word_token_alist[i].token == ESAC) \ - parser_state &= ~(PST_CASEPAT|PST_CASESTMT); \ - else if (word_token_alist[i].token == CASE) \ - parser_state |= PST_CASESTMT; \ - else if (word_token_alist[i].token == COND_END) \ - parser_state &= ~(PST_CONDCMD|PST_CONDEXPR); \ - else if (word_token_alist[i].token == COND_START) \ - parser_state |= PST_CONDCMD; \ - else if (word_token_alist[i].token == '{') \ - open_brace_count++; \ - else if (word_token_alist[i].token == '}' && open_brace_count) \ - open_brace_count--; \ - return (word_token_alist[i].token); \ - } \ - } \ - } while (0) - -#if defined (ALIAS) - - /* OK, we have a token. Let's try to alias expand it, if (and only if) - it's eligible. - - It is eligible for expansion if EXPAND_ALIASES is set, and - the token is unquoted and the last token read was a command - separator (or expand_next_token is set), and we are currently - processing an alias (pushed_string_list is non-empty) and this - token is not the same as the current or any previously - processed alias. - - Special cases that disqualify: - In a pattern list in a case statement (parser_state & PST_CASEPAT). */ - -static char * -mk_alexpansion (s) - char *s; -{ - int l; - char *r; - - l = strlen (s); - r = xmalloc (l + 2); - strcpy (r, s); - /* If the last character in the alias is a newline, don't add a trailing - space to the expansion. Works with shell_getc above. */ - if (r[l - 1] != ' ' && r[l - 1] != '\n') - r[l++] = ' '; - r[l] = '\0'; - return r; -} - -static int -alias_expand_token (tokstr) - char *tokstr; -{ - char *expanded; - alias_t *ap; - - if (((parser_state & PST_ALEXPNEXT) || command_token_position (last_read_token)) && - (parser_state & PST_CASEPAT) == 0) - { - ap = find_alias (tokstr); - - /* Currently expanding this token. */ - if (ap && (ap->flags & AL_BEINGEXPANDED)) - return (NO_EXPANSION); - - /* mk_alexpansion puts an extra space on the end of the alias expansion, - so the lookahead by the parser works right. If this gets changed, - make sure the code in shell_getc that deals with reaching the end of - an expanded alias is changed with it. */ - expanded = ap ? mk_alexpansion (ap->value) : (char *)NULL; - - if (expanded) - { - push_string (expanded, ap->flags & AL_EXPANDNEXT, ap); - return (RE_READ_TOKEN); - } - else - /* This is an eligible token that does not have an expansion. */ - return (NO_EXPANSION); - } - return (NO_EXPANSION); -} -#endif /* ALIAS */ - -static int -time_command_acceptable () -{ -#if defined (COMMAND_TIMING) - int i; - - if (posixly_correct && shell_compatibility_level > 41) - { - /* Quick check of the rest of the line to find the next token. If it - begins with a `-', Posix says to not return `time' as the token. - This was interp 267. */ - i = shell_input_line_index; - while (i < shell_input_line_len && (shell_input_line[i] == ' ' || shell_input_line[i] == '\t')) - i++; - if (shell_input_line[i] == '-') - return 0; - } - - switch (last_read_token) - { - case 0: - case ';': - case '\n': - case AND_AND: - case OR_OR: - case '&': - case DO: - case THEN: - case ELSE: - case '{': /* } */ - case '(': /* ) */ - case BANG: /* ! time pipeline */ - case TIME: /* time time pipeline */ - case TIMEOPT: /* time -p time pipeline */ - case TIMEIGN: /* time -p -- ... */ - return 1; - default: - return 0; - } -#else - return 0; -#endif /* COMMAND_TIMING */ -} - -/* Handle special cases of token recognition: - IN is recognized if the last token was WORD and the token - before that was FOR or CASE or SELECT. - - DO is recognized if the last token was WORD and the token - before that was FOR or SELECT. - - ESAC is recognized if the last token caused `esacs_needed_count' - to be set - - `{' is recognized if the last token as WORD and the token - before that was FUNCTION, or if we just parsed an arithmetic - `for' command. - - `}' is recognized if there is an unclosed `{' present. - - `-p' is returned as TIMEOPT if the last read token was TIME. - `--' is returned as TIMEIGN if the last read token was TIMEOPT. - - ']]' is returned as COND_END if the parser is currently parsing - a conditional expression ((parser_state & PST_CONDEXPR) != 0) - - `time' is returned as TIME if and only if it is immediately - preceded by one of `;', `\n', `||', `&&', or `&'. -*/ - -static int -special_case_tokens (tokstr) - char *tokstr; -{ - if ((last_read_token == WORD) && -#if defined (SELECT_COMMAND) - ((token_before_that == FOR) || (token_before_that == CASE) || (token_before_that == SELECT)) && -#else - ((token_before_that == FOR) || (token_before_that == CASE)) && -#endif - (tokstr[0] == 'i' && tokstr[1] == 'n' && tokstr[2] == 0)) - { - if (token_before_that == CASE) - { - parser_state |= PST_CASEPAT; - esacs_needed_count++; - } - return (IN); - } - - if (last_read_token == WORD && -#if defined (SELECT_COMMAND) - (token_before_that == FOR || token_before_that == SELECT) && -#else - (token_before_that == FOR) && -#endif - (tokstr[0] == 'd' && tokstr[1] == 'o' && tokstr[2] == '\0')) - return (DO); - - /* Ditto for ESAC in the CASE case. - Specifically, this handles "case word in esac", which is a legal - construct, certainly because someone will pass an empty arg to the - case construct, and we don't want it to barf. Of course, we should - insist that the case construct has at least one pattern in it, but - the designers disagree. */ - if (esacs_needed_count) - { - esacs_needed_count--; - if (STREQ (tokstr, "esac")) - { - parser_state &= ~PST_CASEPAT; - return (ESAC); - } - } - - /* The start of a shell function definition. */ - if (parser_state & PST_ALLOWOPNBRC) - { - parser_state &= ~PST_ALLOWOPNBRC; - if (tokstr[0] == '{' && tokstr[1] == '\0') /* } */ - { - open_brace_count++; - function_bstart = line_number; - return ('{'); /* } */ - } - } - - /* We allow a `do' after a for ((...)) without an intervening - list_terminator */ - if (last_read_token == ARITH_FOR_EXPRS && tokstr[0] == 'd' && tokstr[1] == 'o' && !tokstr[2]) - return (DO); - if (last_read_token == ARITH_FOR_EXPRS && tokstr[0] == '{' && tokstr[1] == '\0') /* } */ - { - open_brace_count++; - return ('{'); /* } */ - } - - if (open_brace_count && reserved_word_acceptable (last_read_token) && tokstr[0] == '}' && !tokstr[1]) - { - open_brace_count--; /* { */ - return ('}'); - } - -#if defined (COMMAND_TIMING) - /* Handle -p after `time'. */ - if (last_read_token == TIME && tokstr[0] == '-' && tokstr[1] == 'p' && !tokstr[2]) - return (TIMEOPT); - /* Handle -- after `time -p'. */ - if (last_read_token == TIMEOPT && tokstr[0] == '-' && tokstr[1] == '-' && !tokstr[2]) - return (TIMEIGN); -#endif - -#if defined (COND_COMMAND) /* [[ */ - if ((parser_state & PST_CONDEXPR) && tokstr[0] == ']' && tokstr[1] == ']' && tokstr[2] == '\0') - return (COND_END); -#endif - - return (-1); -} - -/* Called from shell.c when Control-C is typed at top level. Or - by the error rule at top level. */ -void -reset_parser () -{ - dstack.delimiter_depth = 0; /* No delimiters found so far. */ - open_brace_count = 0; - -#if defined (EXTENDED_GLOB) - /* Reset to global value of extended glob */ - if (parser_state & PST_EXTPAT) - extended_glob = global_extglob; -#endif - - parser_state = 0; - -#if defined (ALIAS) || defined (DPAREN_ARITHMETIC) - if (pushed_string_list) - free_string_list (); -#endif /* ALIAS || DPAREN_ARITHMETIC */ - - if (shell_input_line) - { - free (shell_input_line); - shell_input_line = (char *)NULL; - shell_input_line_size = shell_input_line_index = 0; - } - - FREE (word_desc_to_read); - word_desc_to_read = (WORD_DESC *)NULL; - - current_token = '\n'; /* XXX */ - last_read_token = '\n'; - token_to_read = '\n'; -} - -/* Read the next token. Command can be READ (normal operation) or - RESET (to normalize state). */ -static int -read_token (command) - int command; -{ - int character; /* Current character. */ - int peek_char; /* Temporary look-ahead character. */ - int result; /* The thing to return. */ - - if (command == RESET) - { - reset_parser (); - return ('\n'); - } - - if (token_to_read) - { - result = token_to_read; - if (token_to_read == WORD || token_to_read == ASSIGNMENT_WORD) - { - yylval.word = word_desc_to_read; - word_desc_to_read = (WORD_DESC *)NULL; - } - token_to_read = 0; - return (result); - } - -#if defined (COND_COMMAND) - if ((parser_state & (PST_CONDCMD|PST_CONDEXPR)) == PST_CONDCMD) - { - cond_lineno = line_number; - parser_state |= PST_CONDEXPR; - yylval.command = parse_cond_command (); - if (cond_token != COND_END) - { - cond_error (); - return (-1); - } - token_to_read = COND_END; - parser_state &= ~(PST_CONDEXPR|PST_CONDCMD); - return (COND_CMD); - } -#endif - -#if defined (ALIAS) - /* This is a place to jump back to once we have successfully expanded a - token with an alias and pushed the string with push_string () */ - re_read_token: -#endif /* ALIAS */ - - /* Read a single word from input. Start by skipping blanks. */ - while ((character = shell_getc (1)) != EOF && shellblank (character)) - ; - - if (character == EOF) - { - EOF_Reached = 1; - return (yacc_EOF); - } - - if MBTEST(character == '#' && (!interactive || interactive_comments)) - { - /* A comment. Discard until EOL or EOF, and then return a newline. */ - discard_until ('\n'); - shell_getc (0); - character = '\n'; /* this will take the next if statement and return. */ - } - - if (character == '\n') - { - /* If we're about to return an unquoted newline, we can go and collect - the text of any pending here document. */ - if (need_here_doc) - gather_here_documents (); - -#if defined (ALIAS) - parser_state &= ~PST_ALEXPNEXT; -#endif /* ALIAS */ - - parser_state &= ~PST_ASSIGNOK; - - return (character); - } - - if (parser_state & PST_REGEXP) - goto tokword; - - /* Shell meta-characters. */ - if MBTEST(shellmeta (character) && ((parser_state & PST_DBLPAREN) == 0)) - { -#if defined (ALIAS) - /* Turn off alias tokenization iff this character sequence would - not leave us ready to read a command. */ - if (character == '<' || character == '>') - parser_state &= ~PST_ALEXPNEXT; -#endif /* ALIAS */ - - parser_state &= ~PST_ASSIGNOK; - - peek_char = shell_getc (1); - if (character == peek_char) - { - switch (character) - { - case '<': - /* If '<' then we could be at "<<" or at "<<-". We have to - look ahead one more character. */ - peek_char = shell_getc (1); - if MBTEST(peek_char == '-') - return (LESS_LESS_MINUS); - else if MBTEST(peek_char == '<') - return (LESS_LESS_LESS); - else - { - shell_ungetc (peek_char); - return (LESS_LESS); - } - - case '>': - return (GREATER_GREATER); - - case ';': - parser_state |= PST_CASEPAT; -#if defined (ALIAS) - parser_state &= ~PST_ALEXPNEXT; -#endif /* ALIAS */ - - peek_char = shell_getc (1); - if MBTEST(peek_char == '&') - return (SEMI_SEMI_AND); - else - { - shell_ungetc (peek_char); - return (SEMI_SEMI); - } - - case '&': - return (AND_AND); - - case '|': - return (OR_OR); - -#if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND) - case '(': /* ) */ - result = parse_dparen (character); - if (result == -2) - break; - else - return result; -#endif - } - } - else if MBTEST(character == '<' && peek_char == '&') - return (LESS_AND); - else if MBTEST(character == '>' && peek_char == '&') - return (GREATER_AND); - else if MBTEST(character == '<' && peek_char == '>') - return (LESS_GREATER); - else if MBTEST(character == '>' && peek_char == '|') - return (GREATER_BAR); - else if MBTEST(character == '&' && peek_char == '>') - { - peek_char = shell_getc (1); - if MBTEST(peek_char == '>') - return (AND_GREATER_GREATER); - else - { - shell_ungetc (peek_char); - return (AND_GREATER); - } - } - else if MBTEST(character == '|' && peek_char == '&') - return (BAR_AND); - else if MBTEST(character == ';' && peek_char == '&') - { - parser_state |= PST_CASEPAT; -#if defined (ALIAS) - parser_state &= ~PST_ALEXPNEXT; -#endif /* ALIAS */ - return (SEMI_AND); - } - - shell_ungetc (peek_char); - - /* If we look like we are reading the start of a function - definition, then let the reader know about it so that - we will do the right thing with `{'. */ - if MBTEST(character == ')' && last_read_token == '(' && token_before_that == WORD) - { - parser_state |= PST_ALLOWOPNBRC; -#if defined (ALIAS) - parser_state &= ~PST_ALEXPNEXT; -#endif /* ALIAS */ - function_dstart = line_number; - } - - /* case pattern lists may be preceded by an optional left paren. If - we're not trying to parse a case pattern list, the left paren - indicates a subshell. */ - if MBTEST(character == '(' && (parser_state & PST_CASEPAT) == 0) /* ) */ - parser_state |= PST_SUBSHELL; - /*(*/ - else if MBTEST((parser_state & PST_CASEPAT) && character == ')') - parser_state &= ~PST_CASEPAT; - /*(*/ - else if MBTEST((parser_state & PST_SUBSHELL) && character == ')') - parser_state &= ~PST_SUBSHELL; - -#if defined (PROCESS_SUBSTITUTION) - /* Check for the constructs which introduce process substitution. - Shells running in `posix mode' don't do process substitution. */ - if MBTEST(posixly_correct || ((character != '>' && character != '<') || peek_char != '(')) /*)*/ -#endif /* PROCESS_SUBSTITUTION */ - return (character); - } - - /* Hack <&- (close stdin) case. Also <&N- (dup and close). */ - if MBTEST(character == '-' && (last_read_token == LESS_AND || last_read_token == GREATER_AND)) - return (character); - -tokword: - /* Okay, if we got this far, we have to read a word. Read one, - and then check it against the known ones. */ - result = read_token_word (character); -#if defined (ALIAS) - if (result == RE_READ_TOKEN) - goto re_read_token; -#endif - return result; -} - -/* - * Match a $(...) or other grouping construct. This has to handle embedded - * quoted strings ('', ``, "") and nested constructs. It also must handle - * reprompting the user, if necessary, after reading a newline, and returning - * correct error values if it reads EOF. - */ -#define P_FIRSTCLOSE 0x0001 -#define P_ALLOWESC 0x0002 -#define P_DQUOTE 0x0004 -#define P_COMMAND 0x0008 /* parsing a command, so look for comments */ -#define P_BACKQUOTE 0x0010 /* parsing a backquoted command substitution */ -#define P_ARRAYSUB 0x0020 /* parsing a [...] array subscript for assignment */ -#define P_DOLBRACE 0x0040 /* parsing a ${...} construct */ - -/* Lexical state while parsing a grouping construct or $(...). */ -#define LEX_WASDOL 0x001 -#define LEX_CKCOMMENT 0x002 -#define LEX_INCOMMENT 0x004 -#define LEX_PASSNEXT 0x008 -#define LEX_RESWDOK 0x010 -#define LEX_CKCASE 0x020 -#define LEX_INCASE 0x040 -#define LEX_INHEREDOC 0x080 -#define LEX_HEREDELIM 0x100 /* reading here-doc delimiter */ -#define LEX_STRIPDOC 0x200 /* <<- strip tabs from here doc delim */ -#define LEX_INWORD 0x400 - -#define COMSUB_META(ch) ((ch) == ';' || (ch) == '&' || (ch) == '|') - -#define CHECK_NESTRET_ERROR() \ - do { \ - if (nestret == &matched_pair_error) \ - { \ - free (ret); \ - return &matched_pair_error; \ - } \ - } while (0) - -#define APPEND_NESTRET() \ - do { \ - if (nestlen) \ - { \ - RESIZE_MALLOCED_BUFFER (ret, retind, nestlen, retsize, 64); \ - strcpy (ret + retind, nestret); \ - retind += nestlen; \ - } \ - } while (0) - -static char matched_pair_error; - -static char * -parse_matched_pair (qc, open, close, lenp, flags) - int qc; /* `"' if this construct is within double quotes */ - int open, close; - int *lenp, flags; -{ - int count, ch, tflags; - int nestlen, ttranslen, start_lineno; - char *ret, *nestret, *ttrans; - int retind, retsize, rflags; - int dolbrace_state; - - dolbrace_state = (flags & P_DOLBRACE) ? DOLBRACE_PARAM : 0; - -/*itrace("parse_matched_pair[%d]: open = %c close = %c flags = %d", line_number, open, close, flags);*/ - count = 1; - tflags = 0; - - if ((flags & P_COMMAND) && qc != '`' && qc != '\'' && qc != '"' && (flags & P_DQUOTE) == 0) - tflags |= LEX_CKCOMMENT; - - /* RFLAGS is the set of flags we want to pass to recursive calls. */ - rflags = (qc == '"') ? P_DQUOTE : (flags & P_DQUOTE); - - ret = (char *)xmalloc (retsize = 64); - retind = 0; - - start_lineno = line_number; - while (count) - { - ch = shell_getc (qc != '\'' && (tflags & (LEX_PASSNEXT)) == 0); - - if (ch == EOF) - { - free (ret); - parser_error (start_lineno, _("unexpected EOF while looking for matching `%c'"), close); - EOF_Reached = 1; /* XXX */ - return (&matched_pair_error); - } - - /* Possible reprompting. */ - if (ch == '\n' && SHOULD_PROMPT ()) - prompt_again (); - - /* Don't bother counting parens or doing anything else if in a comment - or part of a case statement */ - if (tflags & LEX_INCOMMENT) - { - /* Add this character. */ - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = ch; - - if (ch == '\n') - tflags &= ~LEX_INCOMMENT; - - continue; - } - - /* Not exactly right yet, should handle shell metacharacters, too. If - any changes are made to this test, make analogous changes to subst.c: - extract_delimited_string(). */ - else if MBTEST((tflags & LEX_CKCOMMENT) && (tflags & LEX_INCOMMENT) == 0 && ch == '#' && (retind == 0 || ret[retind-1] == '\n' || shellblank (ret[retind - 1]))) - tflags |= LEX_INCOMMENT; - - if (tflags & LEX_PASSNEXT) /* last char was backslash */ - { - tflags &= ~LEX_PASSNEXT; - if (qc != '\'' && ch == '\n') /* double-quoted \ disappears. */ - { - if (retind > 0) - retind--; /* swallow previously-added backslash */ - continue; - } - - RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64); -#if 0 - if MBTEST(ch == CTLESC || ch == CTLNUL) -#else - if MBTEST(ch == CTLESC) -#endif - ret[retind++] = CTLESC; - ret[retind++] = ch; - continue; - } - /* If we're reparsing the input (e.g., from parse_string_to_word_list), - we've already prepended CTLESC to single-quoted results of $'...'. - We may want to do this for other CTLESC-quoted characters in - reparse, too. */ - else if MBTEST((parser_state & PST_REPARSE) && open == '\'' && (ch == CTLESC || ch == CTLNUL)) - { - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = ch; - continue; - } - else if MBTEST(ch == CTLESC || ch == CTLNUL) /* special shell escapes */ - { - RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64); - ret[retind++] = CTLESC; - ret[retind++] = ch; - continue; - } - else if MBTEST(ch == close) /* ending delimiter */ - count--; - /* handle nested ${...} specially. */ - else if MBTEST(open != close && (tflags & LEX_WASDOL) && open == '{' && ch == open) /* } */ - count++; - else if MBTEST(((flags & P_FIRSTCLOSE) == 0) && ch == open) /* nested begin */ - count++; - - /* Add this character. */ - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = ch; - - /* If we just read the ending character, don't bother continuing. */ - if (count == 0) - break; - - if (open == '\'') /* '' inside grouping construct */ - { - if MBTEST((flags & P_ALLOWESC) && ch == '\\') - tflags |= LEX_PASSNEXT; - continue; - } - - if MBTEST(ch == '\\') /* backslashes */ - tflags |= LEX_PASSNEXT; - - /* Based on which dolstate is currently in (param, op, or word), - decide what the op is. We're really only concerned if it's % or - #, so we can turn on a flag that says whether or not we should - treat single quotes as special when inside a double-quoted - ${...}. This logic must agree with subst.c:extract_dollar_brace_string - since they share the same defines. */ - if (flags & P_DOLBRACE) - { - /* ${param%[%]word} */ - if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '%' && retind > 1) - dolbrace_state = DOLBRACE_QUOTE; - /* ${param#[#]word} */ - else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '#' && retind > 1) - dolbrace_state = DOLBRACE_QUOTE; - /* ${param/[/]pat/rep} */ - else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '/' && retind > 1) - dolbrace_state = DOLBRACE_QUOTE; - /* ${param^[^]pat} */ - else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == '^' && retind > 1) - dolbrace_state = DOLBRACE_QUOTE; - /* ${param,[,]pat} */ - else if MBTEST(dolbrace_state == DOLBRACE_PARAM && ch == ',' && retind > 1) - dolbrace_state = DOLBRACE_QUOTE; - else if MBTEST(dolbrace_state == DOLBRACE_PARAM && strchr ("#%^,~:-=?+/", ch) != 0) - dolbrace_state = DOLBRACE_OP; - else if MBTEST(dolbrace_state == DOLBRACE_OP && strchr ("#%^,~:-=?+/", ch) == 0) - dolbrace_state = DOLBRACE_WORD; - } - - /* The big hammer. Single quotes aren't special in double quotes. The - problem is that Posix used to say the single quotes are semi-special: - within a double-quoted ${...} construct "an even number of - unescaped double-quotes or single-quotes, if any, shall occur." */ - /* This was changed in Austin Group Interp 221 */ - if MBTEST(posixly_correct && shell_compatibility_level > 41 && dolbrace_state != DOLBRACE_QUOTE && (flags & P_DQUOTE) && (flags & P_DOLBRACE) && ch == '\'') - continue; - - /* Could also check open == '`' if we want to parse grouping constructs - inside old-style command substitution. */ - if (open != close) /* a grouping construct */ - { - if MBTEST(shellquote (ch)) - { - /* '', ``, or "" inside $(...) or other grouping construct. */ - push_delimiter (dstack, ch); - if MBTEST((tflags & LEX_WASDOL) && ch == '\'') /* $'...' inside group */ - nestret = parse_matched_pair (ch, ch, ch, &nestlen, P_ALLOWESC|rflags); - else - nestret = parse_matched_pair (ch, ch, ch, &nestlen, rflags); - pop_delimiter (dstack); - CHECK_NESTRET_ERROR (); - - if MBTEST((tflags & LEX_WASDOL) && ch == '\'' && (extended_quote || (rflags & P_DQUOTE) == 0)) - { - /* Translate $'...' here. */ - ttrans = ansiexpand (nestret, 0, nestlen - 1, &ttranslen); - xfree (nestret); - - if ((rflags & P_DQUOTE) == 0) - { - nestret = sh_single_quote (ttrans); - free (ttrans); - nestlen = strlen (nestret); - } - else - { - nestret = ttrans; - nestlen = ttranslen; - } - retind -= 2; /* back up before the $' */ - } - else if MBTEST((tflags & LEX_WASDOL) && ch == '"' && (extended_quote || (rflags & P_DQUOTE) == 0)) - { - /* Locale expand $"..." here. */ - ttrans = localeexpand (nestret, 0, nestlen - 1, start_lineno, &ttranslen); - xfree (nestret); - - nestret = sh_mkdoublequoted (ttrans, ttranslen, 0); - free (ttrans); - nestlen = ttranslen + 2; - retind -= 2; /* back up before the $" */ - } - - APPEND_NESTRET (); - FREE (nestret); - } - else if ((flags & P_ARRAYSUB) && (tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */ - goto parse_dollar_word; - } - /* Parse an old-style command substitution within double quotes as a - single word. */ - /* XXX - sh and ksh93 don't do this - XXX */ - else if MBTEST(open == '"' && ch == '`') - { - nestret = parse_matched_pair (0, '`', '`', &nestlen, rflags); - - CHECK_NESTRET_ERROR (); - APPEND_NESTRET (); - - FREE (nestret); - } - else if MBTEST(open != '`' && (tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */ - /* check for $(), $[], or ${} inside quoted string. */ - { -parse_dollar_word: - if (open == ch) /* undo previous increment */ - count--; - if (ch == '(') /* ) */ - nestret = parse_comsub (0, '(', ')', &nestlen, (rflags|P_COMMAND) & ~P_DQUOTE); - else if (ch == '{') /* } */ - nestret = parse_matched_pair (0, '{', '}', &nestlen, P_FIRSTCLOSE|P_DOLBRACE|rflags); - else if (ch == '[') /* ] */ - nestret = parse_matched_pair (0, '[', ']', &nestlen, rflags); - - CHECK_NESTRET_ERROR (); - APPEND_NESTRET (); - - FREE (nestret); - } - if MBTEST(ch == '$') - tflags |= LEX_WASDOL; - else - tflags &= ~LEX_WASDOL; - } - - ret[retind] = '\0'; - if (lenp) - *lenp = retind; -/*itrace("parse_matched_pair[%d]: returning %s", line_number, ret);*/ - return ret; -} - -/* Parse a $(...) command substitution. This is messier than I'd like, and - reproduces a lot more of the token-reading code than I'd like. */ -static char * -parse_comsub (qc, open, close, lenp, flags) - int qc; /* `"' if this construct is within double quotes */ - int open, close; - int *lenp, flags; -{ - int count, ch, peekc, tflags, lex_rwlen, lex_wlen, lex_firstind; - int nestlen, ttranslen, start_lineno; - char *ret, *nestret, *ttrans, *heredelim; - int retind, retsize, rflags, hdlen; - - /* Posix interp 217 says arithmetic expressions have precedence, so - assume $(( introduces arithmetic expansion and parse accordingly. */ - peekc = shell_getc (0); - shell_ungetc (peekc); - if (peekc == '(') - return (parse_matched_pair (qc, open, close, lenp, 0)); - -/*itrace("parse_comsub: qc = `%c' open = %c close = %c", qc, open, close);*/ - count = 1; - tflags = LEX_RESWDOK; - - if ((flags & P_COMMAND) && qc != '\'' && qc != '"' && (flags & P_DQUOTE) == 0) - tflags |= LEX_CKCASE; - if ((tflags & LEX_CKCASE) && (interactive == 0 || interactive_comments)) - tflags |= LEX_CKCOMMENT; - - /* RFLAGS is the set of flags we want to pass to recursive calls. */ - rflags = (flags & P_DQUOTE); - - ret = (char *)xmalloc (retsize = 64); - retind = 0; - - start_lineno = line_number; - lex_rwlen = lex_wlen = 0; - - heredelim = 0; - lex_firstind = -1; - - while (count) - { -comsub_readchar: - ch = shell_getc (qc != '\'' && (tflags & (LEX_INCOMMENT|LEX_PASSNEXT)) == 0); - - if (ch == EOF) - { -eof_error: - free (ret); - FREE (heredelim); - parser_error (start_lineno, _("unexpected EOF while looking for matching `%c'"), close); - EOF_Reached = 1; /* XXX */ - return (&matched_pair_error); - } - - /* If we hit the end of a line and are reading the contents of a here - document, and it's not the same line that the document starts on, - check for this line being the here doc delimiter. Otherwise, if - we're in a here document, mark the next character as the beginning - of a line. */ - if (ch == '\n') - { - if ((tflags & LEX_HEREDELIM) && heredelim) - { - tflags &= ~LEX_HEREDELIM; - tflags |= LEX_INHEREDOC; - lex_firstind = retind + 1; - } - else if (tflags & LEX_INHEREDOC) - { - int tind; - tind = lex_firstind; - while ((tflags & LEX_STRIPDOC) && ret[tind] == '\t') - tind++; - if (STREQN (ret + tind, heredelim, hdlen)) - { - tflags &= ~(LEX_STRIPDOC|LEX_INHEREDOC); -/*itrace("parse_comsub:%d: found here doc end `%s'", line_number, ret + tind);*/ - free (heredelim); - heredelim = 0; - lex_firstind = -1; - } - else - lex_firstind = retind + 1; - } - } - - /* Possible reprompting. */ - if (ch == '\n' && SHOULD_PROMPT ()) - prompt_again (); - - /* XXX -- possibly allow here doc to be delimited by ending right - paren. */ - if ((tflags & LEX_INHEREDOC) && ch == close && count == 1) - { - int tind; -/*itrace("parse_comsub: in here doc, ch == close, retind - firstind = %d hdlen = %d retind = %d", retind-lex_firstind, hdlen, retind);*/ - tind = lex_firstind; - while ((tflags & LEX_STRIPDOC) && ret[tind] == '\t') - tind++; - if (retind-tind == hdlen && STREQN (ret + tind, heredelim, hdlen)) - { - tflags &= ~(LEX_STRIPDOC|LEX_INHEREDOC); -/*itrace("parse_comsub:%d: found here doc end `%s'", line_number, ret + tind);*/ - free (heredelim); - heredelim = 0; - lex_firstind = -1; - } - } - - /* Don't bother counting parens or doing anything else if in a comment */ - if (tflags & (LEX_INCOMMENT|LEX_INHEREDOC)) - { - /* Add this character. */ - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = ch; - - if ((tflags & LEX_INCOMMENT) && ch == '\n') -{ -/*itrace("parse_comsub:%d: lex_incomment -> 0 ch = `%c'", line_number, ch);*/ - tflags &= ~LEX_INCOMMENT; -} - - continue; - } - - if (tflags & LEX_PASSNEXT) /* last char was backslash */ - { -/*itrace("parse_comsub:%d: lex_passnext -> 0 ch = `%c' (%d)", line_number, ch, __LINE__);*/ - tflags &= ~LEX_PASSNEXT; - if (qc != '\'' && ch == '\n') /* double-quoted \ disappears. */ - { - if (retind > 0) - retind--; /* swallow previously-added backslash */ - continue; - } - - RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64); -#if 0 - if MBTEST(ch == CTLESC || ch == CTLNUL) -#else - if MBTEST(ch == CTLESC) -#endif - ret[retind++] = CTLESC; - ret[retind++] = ch; - continue; - } - - /* If this is a shell break character, we are not in a word. If not, - we either start or continue a word. */ - if MBTEST(shellbreak (ch)) - { - tflags &= ~LEX_INWORD; -/*itrace("parse_comsub:%d: lex_inword -> 0 ch = `%c' (%d)", line_number, ch, __LINE__);*/ - } - else - { - if (tflags & LEX_INWORD) - { - lex_wlen++; -/*itrace("parse_comsub:%d: lex_inword == 1 ch = `%c' lex_wlen = %d (%d)", line_number, ch, lex_wlen, __LINE__);*/ - } - else - { -/*itrace("parse_comsub:%d: lex_inword -> 1 ch = `%c' (%d)", line_number, ch, __LINE__);*/ - tflags |= LEX_INWORD; - lex_wlen = 0; - } - } - - /* Skip whitespace */ - if MBTEST(shellblank (ch) && (tflags & LEX_HEREDELIM) == 0 && lex_rwlen == 0) - { - /* Add this character. */ - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = ch; - continue; - } - - /* Either we are looking for the start of the here-doc delimiter - (lex_firstind == -1) or we are reading one (lex_firstind >= 0). - If this character is a shell break character and we are reading - the delimiter, save it and note that we are now reading a here - document. If we've found the start of the delimiter, note it by - setting lex_firstind. Backslashes can quote shell metacharacters - in here-doc delimiters. */ - if (tflags & LEX_HEREDELIM) - { - if (lex_firstind == -1 && shellbreak (ch) == 0) - lex_firstind = retind; -#if 0 - else if (heredelim && (tflags & LEX_PASSNEXT) == 0 && ch == '\n') - { - tflags |= LEX_INHEREDOC; - tflags &= ~LEX_HEREDELIM; - lex_firstind = retind + 1; - } -#endif - else if (lex_firstind >= 0 && (tflags & LEX_PASSNEXT) == 0 && shellbreak (ch)) - { - if (heredelim == 0) - { - nestret = substring (ret, lex_firstind, retind); - heredelim = string_quote_removal (nestret, 0); - free (nestret); - hdlen = STRLEN(heredelim); -/*itrace("parse_comsub:%d: found here doc delimiter `%s' (%d)", line_number, heredelim, hdlen);*/ - } - if (ch == '\n') - { - tflags |= LEX_INHEREDOC; - tflags &= ~LEX_HEREDELIM; - lex_firstind = retind + 1; - } - else - lex_firstind = -1; - } - } - - /* Meta-characters that can introduce a reserved word. Not perfect yet. */ - if MBTEST((tflags & LEX_RESWDOK) == 0 && (tflags & LEX_CKCASE) && (tflags & LEX_INCOMMENT) == 0 && (shellmeta(ch) || ch == '\n')) - { - /* Add this character. */ - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = ch; - peekc = shell_getc (1); - if (ch == peekc && (ch == '&' || ch == '|' || ch == ';')) /* two-character tokens */ - { - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = peekc; -/*itrace("parse_comsub:%d: set lex_reswordok = 1, ch = `%c'", line_number, ch);*/ - tflags |= LEX_RESWDOK; - lex_rwlen = 0; - continue; - } - else if (ch == '\n' || COMSUB_META(ch)) - { - shell_ungetc (peekc); -/*itrace("parse_comsub:%d: set lex_reswordok = 1, ch = `%c'", line_number, ch);*/ - tflags |= LEX_RESWDOK; - lex_rwlen = 0; - continue; - } - else if (ch == EOF) - goto eof_error; - else - { - /* `unget' the character we just added and fall through */ - retind--; - shell_ungetc (peekc); - } - } - - /* If we can read a reserved word, try to read one. */ - if (tflags & LEX_RESWDOK) - { - if MBTEST(islower (ch)) - { - /* Add this character. */ - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = ch; - lex_rwlen++; - continue; - } - else if MBTEST(lex_rwlen == 4 && shellbreak (ch)) - { - if (STREQN (ret + retind - 4, "case", 4)) -{ - tflags |= LEX_INCASE; -/*itrace("parse_comsub:%d: found `case', lex_incase -> 1 lex_reswdok -> 0", line_number);*/ -} - else if (STREQN (ret + retind - 4, "esac", 4)) -{ - tflags &= ~LEX_INCASE; -/*itrace("parse_comsub:%d: found `esac', lex_incase -> 0 lex_reswdok -> 0", line_number);*/ -} - tflags &= ~LEX_RESWDOK; - } - else if MBTEST((tflags & LEX_CKCOMMENT) && ch == '#' && (lex_rwlen == 0 || ((tflags & LEX_INWORD) && lex_wlen == 0))) - ; /* don't modify LEX_RESWDOK if we're starting a comment */ - else if MBTEST((tflags & LEX_INCASE) && ch != '\n') - /* If we can read a reserved word and we're in case, we're at the - point where we can read a new pattern list or an esac. We - handle the esac case above. If we read a newline, we want to - leave LEX_RESWDOK alone. If we read anything else, we want to - turn off LEX_RESWDOK, since we're going to read a pattern list. */ -{ - tflags &= ~LEX_RESWDOK; -/*itrace("parse_comsub:%d: lex_incase == 1 found `%c', lex_reswordok -> 0", line_number, ch);*/ -} - else if MBTEST(shellbreak (ch) == 0) -{ - tflags &= ~LEX_RESWDOK; -/*itrace("parse_comsub:%d: found `%c', lex_reswordok -> 0", line_number, ch);*/ -} - } - - /* Might be the start of a here-doc delimiter */ - if MBTEST((tflags & LEX_INCOMMENT) == 0 && (tflags & LEX_CKCASE) && ch == '<') - { - /* Add this character. */ - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = ch; - peekc = shell_getc (1); - if (peekc == EOF) - goto eof_error; - if (peekc == ch) - { - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = peekc; - peekc = shell_getc (1); - if (peekc == EOF) - goto eof_error; - if (peekc == '-') - { - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = peekc; - tflags |= LEX_STRIPDOC; - } - else - shell_ungetc (peekc); - if (peekc != '<') - { - tflags |= LEX_HEREDELIM; - lex_firstind = -1; - } - continue; - } - else - ch = peekc; /* fall through and continue XXX */ - } - else if MBTEST((tflags & LEX_CKCOMMENT) && (tflags & LEX_INCOMMENT) == 0 && ch == '#' && (((tflags & LEX_RESWDOK) && lex_rwlen == 0) || ((tflags & LEX_INWORD) && lex_wlen == 0))) -{ -/*itrace("parse_comsub:%d: lex_incomment -> 1 (%d)", line_number, __LINE__);*/ - tflags |= LEX_INCOMMENT; -} - - if MBTEST(ch == CTLESC || ch == CTLNUL) /* special shell escapes */ - { - RESIZE_MALLOCED_BUFFER (ret, retind, 2, retsize, 64); - ret[retind++] = CTLESC; - ret[retind++] = ch; - continue; - } -#if 0 - else if MBTEST((tflags & LEX_INCASE) && ch == close && close == ')') - tflags &= ~LEX_INCASE; /* XXX */ -#endif - else if MBTEST(ch == close && (tflags & LEX_INCASE) == 0) /* ending delimiter */ -{ - count--; -/*itrace("parse_comsub:%d: found close: count = %d", line_number, count);*/ -} - else if MBTEST(((flags & P_FIRSTCLOSE) == 0) && (tflags & LEX_INCASE) == 0 && ch == open) /* nested begin */ -{ - count++; -/*itrace("parse_comsub:%d: found open: count = %d", line_number, count);*/ -} - - /* Add this character. */ - RESIZE_MALLOCED_BUFFER (ret, retind, 1, retsize, 64); - ret[retind++] = ch; - - /* If we just read the ending character, don't bother continuing. */ - if (count == 0) - break; - - if MBTEST(ch == '\\') /* backslashes */ - tflags |= LEX_PASSNEXT; - - if MBTEST(shellquote (ch)) - { - /* '', ``, or "" inside $(...). */ - push_delimiter (dstack, ch); - if MBTEST((tflags & LEX_WASDOL) && ch == '\'') /* $'...' inside group */ - nestret = parse_matched_pair (ch, ch, ch, &nestlen, P_ALLOWESC|rflags); - else - nestret = parse_matched_pair (ch, ch, ch, &nestlen, rflags); - pop_delimiter (dstack); - CHECK_NESTRET_ERROR (); - - if MBTEST((tflags & LEX_WASDOL) && ch == '\'' && (extended_quote || (rflags & P_DQUOTE) == 0)) - { - /* Translate $'...' here. */ - ttrans = ansiexpand (nestret, 0, nestlen - 1, &ttranslen); - xfree (nestret); - - if ((rflags & P_DQUOTE) == 0) - { - nestret = sh_single_quote (ttrans); - free (ttrans); - nestlen = strlen (nestret); - } - else - { - nestret = ttrans; - nestlen = ttranslen; - } - retind -= 2; /* back up before the $' */ - } - else if MBTEST((tflags & LEX_WASDOL) && ch == '"' && (extended_quote || (rflags & P_DQUOTE) == 0)) - { - /* Locale expand $"..." here. */ - ttrans = localeexpand (nestret, 0, nestlen - 1, start_lineno, &ttranslen); - xfree (nestret); - - nestret = sh_mkdoublequoted (ttrans, ttranslen, 0); - free (ttrans); - nestlen = ttranslen + 2; - retind -= 2; /* back up before the $" */ - } - - APPEND_NESTRET (); - FREE (nestret); - } - else if MBTEST((tflags & LEX_WASDOL) && (ch == '(' || ch == '{' || ch == '[')) /* ) } ] */ - /* check for $(), $[], or ${} inside command substitution. */ - { - if ((tflags & LEX_INCASE) == 0 && open == ch) /* undo previous increment */ - count--; - if (ch == '(') /* ) */ - nestret = parse_comsub (0, '(', ')', &nestlen, (rflags|P_COMMAND) & ~P_DQUOTE); - else if (ch == '{') /* } */ - nestret = parse_matched_pair (0, '{', '}', &nestlen, P_FIRSTCLOSE|P_DOLBRACE|rflags); - else if (ch == '[') /* ] */ - nestret = parse_matched_pair (0, '[', ']', &nestlen, rflags); - - CHECK_NESTRET_ERROR (); - APPEND_NESTRET (); - - FREE (nestret); - } - if MBTEST(ch == '$') - tflags |= LEX_WASDOL; - else - tflags &= ~LEX_WASDOL; - } - - FREE (heredelim); - ret[retind] = '\0'; - if (lenp) - *lenp = retind; -/*itrace("parse_comsub:%d: returning `%s'", line_number, ret);*/ - return ret; -} - -/* Recursively call the parser to parse a $(...) command substitution. */ -char * -xparse_dolparen (base, string, indp, flags) - char *base; - char *string; - int *indp; - int flags; -{ - sh_parser_state_t ps; - sh_input_line_state_t ls; - int orig_ind, nc, sflags; - char *ret, *s, *ep, *ostring; - - /*yydebug = 1;*/ - orig_ind = *indp; - ostring = string; - -/*itrace("xparse_dolparen: size = %d shell_input_line = `%s'", shell_input_line_size, shell_input_line);*/ - sflags = SEVAL_NONINT|SEVAL_NOHIST|SEVAL_NOFREE; - if (flags & SX_NOLONGJMP) - sflags |= SEVAL_NOLONGJMP; - save_parser_state (&ps); - save_input_line_state (&ls); - - /*(*/ - parser_state |= PST_CMDSUBST|PST_EOFTOKEN; /* allow instant ')' */ /*(*/ - shell_eof_token = ')'; - parse_string (string, "command substitution", sflags, &ep); - - restore_parser_state (&ps); - reset_parser (); - /* reset_parser clears shell_input_line and associated variables */ - restore_input_line_state (&ls); - if (interactive) - token_to_read = 0; - - /* Need to find how many characters parse_and_execute consumed, update - *indp, if flags != 0, copy the portion of the string parsed into RET - and return it. If flags & 1 (EX_NOALLOC) we can return NULL. */ - - /*(*/ - if (ep[-1] != ')') - { -#if DEBUG - if (ep[-1] != '\n') - itrace("xparse_dolparen:%d: ep[-1] != RPAREN (%d), ep = `%s'", line_number, ep[-1], ep); -#endif - while (ep > ostring && ep[-1] == '\n') ep--; - } - - nc = ep - ostring; - *indp = ep - base - 1; - - /*(*/ -#if DEBUG - if (base[*indp] != ')') - itrace("xparse_dolparen:%d: base[%d] != RPAREN (%d), base = `%s'", line_number, *indp, base[*indp], base); -#endif - - if (flags & SX_NOALLOC) - return (char *)NULL; - - if (nc == 0) - { - ret = xmalloc (1); - ret[0] = '\0'; - } - else - ret = substring (ostring, 0, nc - 1); - - return ret; -} - -#if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND) -/* Parse a double-paren construct. It can be either an arithmetic - command, an arithmetic `for' command, or a nested subshell. Returns - the parsed token, -1 on error, or -2 if we didn't do anything and - should just go on. */ -static int -parse_dparen (c) - int c; -{ - int cmdtyp, sline; - char *wval; - WORD_DESC *wd; - -#if defined (ARITH_FOR_COMMAND) - if (last_read_token == FOR) - { - arith_for_lineno = line_number; - cmdtyp = parse_arith_cmd (&wval, 0); - if (cmdtyp == 1) - { - wd = alloc_word_desc (); - wd->word = wval; - yylval.word_list = make_word_list (wd, (WORD_LIST *)NULL); - return (ARITH_FOR_EXPRS); - } - else - return -1; /* ERROR */ - } -#endif - -#if defined (DPAREN_ARITHMETIC) - if (reserved_word_acceptable (last_read_token)) - { - sline = line_number; - - cmdtyp = parse_arith_cmd (&wval, 0); - if (cmdtyp == 1) /* arithmetic command */ - { - wd = alloc_word_desc (); - wd->word = wval; - wd->flags = W_QUOTED|W_NOSPLIT|W_NOGLOB|W_DQUOTE; - yylval.word_list = make_word_list (wd, (WORD_LIST *)NULL); - return (ARITH_CMD); - } - else if (cmdtyp == 0) /* nested subshell */ - { - push_string (wval, 0, (alias_t *)NULL); - if ((parser_state & PST_CASEPAT) == 0) - parser_state |= PST_SUBSHELL; - return (c); - } - else /* ERROR */ - return -1; - } -#endif - - return -2; /* XXX */ -} - -/* We've seen a `(('. Look for the matching `))'. If we get it, return 1. - If not, assume it's a nested subshell for backwards compatibility and - return 0. In any case, put the characters we've consumed into a locally- - allocated buffer and make *ep point to that buffer. Return -1 on an - error, for example EOF. */ -static int -parse_arith_cmd (ep, adddq) - char **ep; - int adddq; -{ - int exp_lineno, rval, c; - char *ttok, *tokstr; - int ttoklen; - - exp_lineno = line_number; - ttok = parse_matched_pair (0, '(', ')', &ttoklen, 0); - rval = 1; - if (ttok == &matched_pair_error) - return -1; - /* Check that the next character is the closing right paren. If - not, this is a syntax error. ( */ - c = shell_getc (0); - if MBTEST(c != ')') - rval = 0; - - tokstr = (char *)xmalloc (ttoklen + 4); - - /* if ADDDQ != 0 then (( ... )) -> "..." */ - if (rval == 1 && adddq) /* arith cmd, add double quotes */ - { - tokstr[0] = '"'; - strncpy (tokstr + 1, ttok, ttoklen - 1); - tokstr[ttoklen] = '"'; - tokstr[ttoklen+1] = '\0'; - } - else if (rval == 1) /* arith cmd, don't add double quotes */ - { - strncpy (tokstr, ttok, ttoklen - 1); - tokstr[ttoklen-1] = '\0'; - } - else /* nested subshell */ - { - tokstr[0] = '('; - strncpy (tokstr + 1, ttok, ttoklen - 1); - tokstr[ttoklen] = ')'; - tokstr[ttoklen+1] = c; - tokstr[ttoklen+2] = '\0'; - } - - *ep = tokstr; - FREE (ttok); - return rval; -} -#endif /* DPAREN_ARITHMETIC || ARITH_FOR_COMMAND */ - -#if defined (COND_COMMAND) -static void -cond_error () -{ - char *etext; - - if (EOF_Reached && cond_token != COND_ERROR) /* [[ */ - parser_error (cond_lineno, _("unexpected EOF while looking for `]]'")); - else if (cond_token != COND_ERROR) - { - if (etext = error_token_from_token (cond_token)) - { - parser_error (cond_lineno, _("syntax error in conditional expression: unexpected token `%s'"), etext); - free (etext); - } - else - parser_error (cond_lineno, _("syntax error in conditional expression")); - } -} - -static COND_COM * -cond_expr () -{ - return (cond_or ()); -} - -static COND_COM * -cond_or () -{ - COND_COM *l, *r; - - l = cond_and (); - if (cond_token == OR_OR) - { - r = cond_or (); - l = make_cond_node (COND_OR, (WORD_DESC *)NULL, l, r); - } - return l; -} - -static COND_COM * -cond_and () -{ - COND_COM *l, *r; - - l = cond_term (); - if (cond_token == AND_AND) - { - r = cond_and (); - l = make_cond_node (COND_AND, (WORD_DESC *)NULL, l, r); - } - return l; -} - -static int -cond_skip_newlines () -{ - while ((cond_token = read_token (READ)) == '\n') - { - if (SHOULD_PROMPT ()) - prompt_again (); - } - return (cond_token); -} - -#define COND_RETURN_ERROR() \ - do { cond_token = COND_ERROR; return ((COND_COM *)NULL); } while (0) - -static COND_COM * -cond_term () -{ - WORD_DESC *op; - COND_COM *term, *tleft, *tright; - int tok, lineno; - char *etext; - - /* Read a token. It can be a left paren, a `!', a unary operator, or a - word that should be the first argument of a binary operator. Start by - skipping newlines, since this is a compound command. */ - tok = cond_skip_newlines (); - lineno = line_number; - if (tok == COND_END) - { - COND_RETURN_ERROR (); - } - else if (tok == '(') - { - term = cond_expr (); - if (cond_token != ')') - { - if (term) - dispose_cond_node (term); /* ( */ - if (etext = error_token_from_token (cond_token)) - { - parser_error (lineno, _("unexpected token `%s', expected `)'"), etext); - free (etext); - } - else - parser_error (lineno, _("expected `)'")); - COND_RETURN_ERROR (); - } - term = make_cond_node (COND_EXPR, (WORD_DESC *)NULL, term, (COND_COM *)NULL); - (void)cond_skip_newlines (); - } - else if (tok == BANG || (tok == WORD && (yylval.word->word[0] == '!' && yylval.word->word[1] == '\0'))) - { - if (tok == WORD) - dispose_word (yylval.word); /* not needed */ - term = cond_term (); - if (term) - term->flags |= CMD_INVERT_RETURN; - } - else if (tok == WORD && yylval.word->word[0] == '-' && yylval.word->word[2] == 0 && test_unop (yylval.word->word)) - { - op = yylval.word; - tok = read_token (READ); - if (tok == WORD) - { - tleft = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL); - term = make_cond_node (COND_UNARY, op, tleft, (COND_COM *)NULL); - } - else - { - dispose_word (op); - if (etext = error_token_from_token (tok)) - { - parser_error (line_number, _("unexpected argument `%s' to conditional unary operator"), etext); - free (etext); - } - else - parser_error (line_number, _("unexpected argument to conditional unary operator")); - COND_RETURN_ERROR (); - } - - (void)cond_skip_newlines (); - } - else if (tok == WORD) /* left argument to binary operator */ - { - /* lhs */ - tleft = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL); - - /* binop */ - tok = read_token (READ); - if (tok == WORD && test_binop (yylval.word->word)) - { - op = yylval.word; - if (op->word[0] == '=' && (op->word[1] == '\0' || (op->word[1] == '=' && op->word[2] == '\0'))) - parser_state |= PST_EXTPAT; - else if (op->word[0] == '!' && op->word[1] == '=' && op->word[2] == '\0') - parser_state |= PST_EXTPAT; - } -#if defined (COND_REGEXP) - else if (tok == WORD && STREQ (yylval.word->word, "=~")) - { - op = yylval.word; - parser_state |= PST_REGEXP; - } -#endif - else if (tok == '<' || tok == '>') - op = make_word_from_token (tok); /* ( */ - /* There should be a check before blindly accepting the `)' that we have - seen the opening `('. */ - else if (tok == COND_END || tok == AND_AND || tok == OR_OR || tok == ')') - { - /* Special case. [[ x ]] is equivalent to [[ -n x ]], just like - the test command. Similarly for [[ x && expr ]] or - [[ x || expr ]] or [[ (x) ]]. */ - op = make_word ("-n"); - term = make_cond_node (COND_UNARY, op, tleft, (COND_COM *)NULL); - cond_token = tok; - return (term); - } - else - { - if (etext = error_token_from_token (tok)) - { - parser_error (line_number, _("unexpected token `%s', conditional binary operator expected"), etext); - free (etext); - } - else - parser_error (line_number, _("conditional binary operator expected")); - dispose_cond_node (tleft); - COND_RETURN_ERROR (); - } - - /* rhs */ - if (parser_state & PST_EXTPAT) - extended_glob = 1; - tok = read_token (READ); - if (parser_state & PST_EXTPAT) - extended_glob = global_extglob; - parser_state &= ~(PST_REGEXP|PST_EXTPAT); - - if (tok == WORD) - { - tright = make_cond_node (COND_TERM, yylval.word, (COND_COM *)NULL, (COND_COM *)NULL); - term = make_cond_node (COND_BINARY, op, tleft, tright); - } - else - { - if (etext = error_token_from_token (tok)) - { - parser_error (line_number, _("unexpected argument `%s' to conditional binary operator"), etext); - free (etext); - } - else - parser_error (line_number, _("unexpected argument to conditional binary operator")); - dispose_cond_node (tleft); - dispose_word (op); - COND_RETURN_ERROR (); - } - - (void)cond_skip_newlines (); - } - else - { - if (tok < 256) - parser_error (line_number, _("unexpected token `%c' in conditional command"), tok); - else if (etext = error_token_from_token (tok)) - { - parser_error (line_number, _("unexpected token `%s' in conditional command"), etext); - free (etext); - } - else - parser_error (line_number, _("unexpected token %d in conditional command"), tok); - COND_RETURN_ERROR (); - } - return (term); -} - -/* This is kind of bogus -- we slip a mini recursive-descent parser in - here to handle the conditional statement syntax. */ -static COMMAND * -parse_cond_command () -{ - COND_COM *cexp; - - global_extglob = extended_glob; - cexp = cond_expr (); - return (make_cond_command (cexp)); -} -#endif - -#if defined (ARRAY_VARS) -/* When this is called, it's guaranteed that we don't care about anything - in t beyond i. We do save and restore the chars, though. */ -static int -token_is_assignment (t, i) - char *t; - int i; -{ - unsigned char c, c1; - int r; - - c = t[i]; c1 = t[i+1]; - t[i] = '='; t[i+1] = '\0'; - r = assignment (t, (parser_state & PST_COMPASSIGN) != 0); - t[i] = c; t[i+1] = c1; - return r; -} - -/* XXX - possible changes here for `+=' */ -static int -token_is_ident (t, i) - char *t; - int i; -{ - unsigned char c; - int r; - - c = t[i]; - t[i] = '\0'; - r = legal_identifier (t); - t[i] = c; - return r; -} -#endif - -static int -read_token_word (character) - int character; -{ - /* The value for YYLVAL when a WORD is read. */ - WORD_DESC *the_word; - - /* Index into the token that we are building. */ - int token_index; - - /* ALL_DIGITS becomes zero when we see a non-digit. */ - int all_digit_token; - - /* DOLLAR_PRESENT becomes non-zero if we see a `$'. */ - int dollar_present; - - /* COMPOUND_ASSIGNMENT becomes non-zero if we are parsing a compound - assignment. */ - int compound_assignment; - - /* QUOTED becomes non-zero if we see one of ("), ('), (`), or (\). */ - int quoted; - - /* Non-zero means to ignore the value of the next character, and just - to add it no matter what. */ - int pass_next_character; - - /* The current delimiting character. */ - int cd; - int result, peek_char; - char *ttok, *ttrans; - int ttoklen, ttranslen; - intmax_t lvalue; - - if (token_buffer_size < TOKEN_DEFAULT_INITIAL_SIZE) - token = (char *)xrealloc (token, token_buffer_size = TOKEN_DEFAULT_INITIAL_SIZE); - - token_index = 0; - all_digit_token = DIGIT (character); - dollar_present = quoted = pass_next_character = compound_assignment = 0; - - for (;;) - { - if (character == EOF) - goto got_token; - - if (pass_next_character) - { - pass_next_character = 0; - goto got_escaped_character; - } - - cd = current_delimiter (dstack); - - /* Handle backslashes. Quote lots of things when not inside of - double-quotes, quote some things inside of double-quotes. */ - if MBTEST(character == '\\') - { - peek_char = shell_getc (0); - - /* Backslash-newline is ignored in all cases except - when quoted with single quotes. */ - if (peek_char == '\n') - { - character = '\n'; - goto next_character; - } - else - { - shell_ungetc (peek_char); - - /* If the next character is to be quoted, note it now. */ - if (cd == 0 || cd == '`' || - (cd == '"' && peek_char >= 0 && (sh_syntaxtab[peek_char] & CBSDQUOTE))) - pass_next_character++; - - quoted = 1; - goto got_character; - } - } - - /* Parse a matched pair of quote characters. */ - if MBTEST(shellquote (character)) - { - push_delimiter (dstack, character); - ttok = parse_matched_pair (character, character, character, &ttoklen, (character == '`') ? P_COMMAND : 0); - pop_delimiter (dstack); - if (ttok == &matched_pair_error) - return -1; /* Bail immediately. */ - RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2, - token_buffer_size, TOKEN_DEFAULT_GROW_SIZE); - token[token_index++] = character; - strcpy (token + token_index, ttok); - token_index += ttoklen; - all_digit_token = 0; - quoted = 1; - dollar_present |= (character == '"' && strchr (ttok, '$') != 0); - FREE (ttok); - goto next_character; - } - -#ifdef COND_REGEXP - /* When parsing a regexp as a single word inside a conditional command, - we need to special-case characters special to both the shell and - regular expressions. Right now, that is only '(' and '|'. */ /*)*/ - if MBTEST((parser_state & PST_REGEXP) && (character == '(' || character == '|')) /*)*/ - { - if (character == '|') - goto got_character; - - push_delimiter (dstack, character); - ttok = parse_matched_pair (cd, '(', ')', &ttoklen, 0); - pop_delimiter (dstack); - if (ttok == &matched_pair_error) - return -1; /* Bail immediately. */ - RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2, - token_buffer_size, TOKEN_DEFAULT_GROW_SIZE); - token[token_index++] = character; - strcpy (token + token_index, ttok); - token_index += ttoklen; - FREE (ttok); - dollar_present = all_digit_token = 0; - goto next_character; - } -#endif /* COND_REGEXP */ - -#ifdef EXTENDED_GLOB - /* Parse a ksh-style extended pattern matching specification. */ - if MBTEST(extended_glob && PATTERN_CHAR (character)) - { - peek_char = shell_getc (1); - if MBTEST(peek_char == '(') /* ) */ - { - push_delimiter (dstack, peek_char); - ttok = parse_matched_pair (cd, '(', ')', &ttoklen, 0); - pop_delimiter (dstack); - if (ttok == &matched_pair_error) - return -1; /* Bail immediately. */ - RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 3, - token_buffer_size, - TOKEN_DEFAULT_GROW_SIZE); - token[token_index++] = character; - token[token_index++] = peek_char; - strcpy (token + token_index, ttok); - token_index += ttoklen; - FREE (ttok); - dollar_present = all_digit_token = 0; - goto next_character; - } - else - shell_ungetc (peek_char); - } -#endif /* EXTENDED_GLOB */ - - /* If the delimiter character is not single quote, parse some of - the shell expansions that must be read as a single word. */ - if (shellexp (character)) - { - peek_char = shell_getc (1); - /* $(...), <(...), >(...), $((...)), ${...}, and $[...] constructs */ - if MBTEST(peek_char == '(' || - ((peek_char == '{' || peek_char == '[') && character == '$')) /* ) ] } */ - { - if (peek_char == '{') /* } */ - ttok = parse_matched_pair (cd, '{', '}', &ttoklen, P_FIRSTCLOSE|P_DOLBRACE); - else if (peek_char == '(') /* ) */ - { - /* XXX - push and pop the `(' as a delimiter for use by - the command-oriented-history code. This way newlines - appearing in the $(...) string get added to the - history literally rather than causing a possibly- - incorrect `;' to be added. ) */ - push_delimiter (dstack, peek_char); - ttok = parse_comsub (cd, '(', ')', &ttoklen, P_COMMAND); - pop_delimiter (dstack); - } - else - ttok = parse_matched_pair (cd, '[', ']', &ttoklen, 0); - if (ttok == &matched_pair_error) - return -1; /* Bail immediately. */ - RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 3, - token_buffer_size, - TOKEN_DEFAULT_GROW_SIZE); - token[token_index++] = character; - token[token_index++] = peek_char; - strcpy (token + token_index, ttok); - token_index += ttoklen; - FREE (ttok); - dollar_present = 1; - all_digit_token = 0; - goto next_character; - } - /* This handles $'...' and $"..." new-style quoted strings. */ - else if MBTEST(character == '$' && (peek_char == '\'' || peek_char == '"')) - { - int first_line; - - first_line = line_number; - push_delimiter (dstack, peek_char); - ttok = parse_matched_pair (peek_char, peek_char, peek_char, - &ttoklen, - (peek_char == '\'') ? P_ALLOWESC : 0); - pop_delimiter (dstack); - if (ttok == &matched_pair_error) - return -1; - if (peek_char == '\'') - { - ttrans = ansiexpand (ttok, 0, ttoklen - 1, &ttranslen); - free (ttok); - - /* Insert the single quotes and correctly quote any - embedded single quotes (allowed because P_ALLOWESC was - passed to parse_matched_pair). */ - ttok = sh_single_quote (ttrans); - free (ttrans); - ttranslen = strlen (ttok); - ttrans = ttok; - } - else - { - /* Try to locale-expand the converted string. */ - ttrans = localeexpand (ttok, 0, ttoklen - 1, first_line, &ttranslen); - free (ttok); - - /* Add the double quotes back */ - ttok = sh_mkdoublequoted (ttrans, ttranslen, 0); - free (ttrans); - ttranslen += 2; - ttrans = ttok; - } - - RESIZE_MALLOCED_BUFFER (token, token_index, ttranslen + 1, - token_buffer_size, - TOKEN_DEFAULT_GROW_SIZE); - strcpy (token + token_index, ttrans); - token_index += ttranslen; - FREE (ttrans); - quoted = 1; - all_digit_token = 0; - goto next_character; - } - /* This could eventually be extended to recognize all of the - shell's single-character parameter expansions, and set flags.*/ - else if MBTEST(character == '$' && peek_char == '$') - { - RESIZE_MALLOCED_BUFFER (token, token_index, 3, - token_buffer_size, - TOKEN_DEFAULT_GROW_SIZE); - token[token_index++] = '$'; - token[token_index++] = peek_char; - dollar_present = 1; - all_digit_token = 0; - goto next_character; - } - else - shell_ungetc (peek_char); - } - -#if defined (ARRAY_VARS) - /* Identify possible array subscript assignment; match [...]. If - parser_state&PST_COMPASSIGN, we need to parse [sub]=words treating - `sub' as if it were enclosed in double quotes. */ - else if MBTEST(character == '[' && /* ] */ - ((token_index > 0 && assignment_acceptable (last_read_token) && token_is_ident (token, token_index)) || - (token_index == 0 && (parser_state&PST_COMPASSIGN)))) - { - ttok = parse_matched_pair (cd, '[', ']', &ttoklen, P_ARRAYSUB); - if (ttok == &matched_pair_error) - return -1; /* Bail immediately. */ - RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 2, - token_buffer_size, - TOKEN_DEFAULT_GROW_SIZE); - token[token_index++] = character; - strcpy (token + token_index, ttok); - token_index += ttoklen; - FREE (ttok); - all_digit_token = 0; - goto next_character; - } - /* Identify possible compound array variable assignment. */ - else if MBTEST(character == '=' && token_index > 0 && (assignment_acceptable (last_read_token) || (parser_state & PST_ASSIGNOK)) && token_is_assignment (token, token_index)) - { - peek_char = shell_getc (1); - if MBTEST(peek_char == '(') /* ) */ - { - ttok = parse_compound_assignment (&ttoklen); - - RESIZE_MALLOCED_BUFFER (token, token_index, ttoklen + 4, - token_buffer_size, - TOKEN_DEFAULT_GROW_SIZE); - - token[token_index++] = '='; - token[token_index++] = '('; - if (ttok) - { - strcpy (token + token_index, ttok); - token_index += ttoklen; - } - token[token_index++] = ')'; - FREE (ttok); - all_digit_token = 0; - compound_assignment = 1; -#if 1 - goto next_character; -#else - goto got_token; /* ksh93 seems to do this */ -#endif - } - else - shell_ungetc (peek_char); - } -#endif - - /* When not parsing a multi-character word construct, shell meta- - characters break words. */ - if MBTEST(shellbreak (character)) - { - shell_ungetc (character); - goto got_token; - } - -got_character: - - if (character == CTLESC || character == CTLNUL) - { - RESIZE_MALLOCED_BUFFER (token, token_index, 2, token_buffer_size, - TOKEN_DEFAULT_GROW_SIZE); - token[token_index++] = CTLESC; - } - else -got_escaped_character: - RESIZE_MALLOCED_BUFFER (token, token_index, 1, token_buffer_size, - TOKEN_DEFAULT_GROW_SIZE); - - token[token_index++] = character; - - all_digit_token &= DIGIT (character); - dollar_present |= character == '$'; - - next_character: - if (character == '\n' && SHOULD_PROMPT ()) - prompt_again (); - - /* We want to remove quoted newlines (that is, a \ pair) - unless we are within single quotes or pass_next_character is - set (the shell equivalent of literal-next). */ - cd = current_delimiter (dstack); - character = shell_getc (cd != '\'' && pass_next_character == 0); - } /* end for (;;) */ - -got_token: - - /* Calls to RESIZE_MALLOCED_BUFFER ensure there is sufficient room. */ - token[token_index] = '\0'; - - /* Check to see what thing we should return. If the last_read_token - is a `<', or a `&', or the character which ended this token is - a '>' or '<', then, and ONLY then, is this input token a NUMBER. - Otherwise, it is just a word, and should be returned as such. */ - if MBTEST(all_digit_token && (character == '<' || character == '>' || - last_read_token == LESS_AND || - last_read_token == GREATER_AND)) - { - if (legal_number (token, &lvalue) && (int)lvalue == lvalue) -#if 0 - yylval.number = lvalue; - else - yylval.number = -1; - return (NUMBER); -#else - { - yylval.number = lvalue; - return (NUMBER); - } -#endif - } - - /* Check for special case tokens. */ - result = (last_shell_getc_is_singlebyte) ? special_case_tokens (token) : -1; - if (result >= 0) - return result; - -#if defined (ALIAS) - /* Posix.2 does not allow reserved words to be aliased, so check for all - of them, including special cases, before expanding the current token - as an alias. */ - if MBTEST(posixly_correct) - CHECK_FOR_RESERVED_WORD (token); - - /* Aliases are expanded iff EXPAND_ALIASES is non-zero, and quoting - inhibits alias expansion. */ - if (expand_aliases && quoted == 0) - { - result = alias_expand_token (token); - if (result == RE_READ_TOKEN) - return (RE_READ_TOKEN); - else if (result == NO_EXPANSION) - parser_state &= ~PST_ALEXPNEXT; - } - - /* If not in Posix.2 mode, check for reserved words after alias - expansion. */ - if MBTEST(posixly_correct == 0) -#endif - CHECK_FOR_RESERVED_WORD (token); - - the_word = (WORD_DESC *)xmalloc (sizeof (WORD_DESC)); - the_word->word = (char *)xmalloc (1 + token_index); - the_word->flags = 0; - strcpy (the_word->word, token); - if (dollar_present) - the_word->flags |= W_HASDOLLAR; - if (quoted) - the_word->flags |= W_QUOTED; /*(*/ - if (compound_assignment && token[token_index-1] == ')') - the_word->flags |= W_COMPASSIGN; - /* A word is an assignment if it appears at the beginning of a - simple command, or after another assignment word. This is - context-dependent, so it cannot be handled in the grammar. */ - if (assignment (token, (parser_state & PST_COMPASSIGN) != 0)) - { - the_word->flags |= W_ASSIGNMENT; - /* Don't perform word splitting on assignment statements. */ - if (assignment_acceptable (last_read_token) || (parser_state & PST_COMPASSIGN) != 0) - the_word->flags |= W_NOSPLIT; - } - - if (command_token_position (last_read_token)) - { - struct builtin *b; - b = builtin_address_internal (token, 0); - if (b && (b->flags & ASSIGNMENT_BUILTIN)) - parser_state |= PST_ASSIGNOK; - else if (STREQ (token, "eval") || STREQ (token, "let")) - parser_state |= PST_ASSIGNOK; - } - - yylval.word = the_word; - - if (token[0] == '{' && token[token_index-1] == '}' && - (character == '<' || character == '>')) - { - /* can use token; already copied to the_word */ - token[token_index-1] = '\0'; - if (legal_identifier (token+1)) - { - strcpy (the_word->word, token+1); -/*itrace("read_token_word: returning REDIR_WORD for %s", the_word->word);*/ - return (REDIR_WORD); - } - } - - result = ((the_word->flags & (W_ASSIGNMENT|W_NOSPLIT)) == (W_ASSIGNMENT|W_NOSPLIT)) - ? ASSIGNMENT_WORD : WORD; - - switch (last_read_token) - { - case FUNCTION: - parser_state |= PST_ALLOWOPNBRC; - function_dstart = line_number; - break; - case CASE: - case SELECT: - case FOR: - if (word_top < MAX_CASE_NEST) - word_top++; - word_lineno[word_top] = line_number; - break; - } - - return (result); -} - -/* Return 1 if TOKSYM is a token that after being read would allow - a reserved word to be seen, else 0. */ -static int -reserved_word_acceptable (toksym) - int toksym; -{ - switch (toksym) - { - case '\n': - case ';': - case '(': - case ')': - case '|': - case '&': - case '{': - case '}': /* XXX */ - case AND_AND: - case BANG: - case BAR_AND: - case DO: - case DONE: - case ELIF: - case ELSE: - case ESAC: - case FI: - case IF: - case OR_OR: - case SEMI_SEMI: - case SEMI_AND: - case SEMI_SEMI_AND: - case THEN: - case TIME: - case TIMEOPT: - case TIMEIGN: - case COPROC: - case UNTIL: - case WHILE: - case 0: - return 1; - default: -#if defined (COPROCESS_SUPPORT) - if (last_read_token == WORD && token_before_that == COPROC) - return 1; -#endif - if (last_read_token == WORD && token_before_that == FUNCTION) - return 1; - return 0; - } -} - -/* Return the index of TOKEN in the alist of reserved words, or -1 if - TOKEN is not a shell reserved word. */ -int -find_reserved_word (tokstr) - char *tokstr; -{ - int i; - for (i = 0; word_token_alist[i].word; i++) - if (STREQ (tokstr, word_token_alist[i].word)) - return i; - return -1; -} - -/* An interface to let the rest of the shell (primarily the completion - system) know what the parser is expecting. */ -int -parser_in_command_position () -{ - return (command_token_position (last_read_token)); -} - -#if 0 -#if defined (READLINE) -/* Called after each time readline is called. This insures that whatever - the new prompt string is gets propagated to readline's local prompt - variable. */ -static void -reset_readline_prompt () -{ - char *temp_prompt; - - if (prompt_string_pointer) - { - temp_prompt = (*prompt_string_pointer) - ? decode_prompt_string (*prompt_string_pointer) - : (char *)NULL; - - if (temp_prompt == 0) - { - temp_prompt = (char *)xmalloc (1); - temp_prompt[0] = '\0'; - } - - FREE (current_readline_prompt); - current_readline_prompt = temp_prompt; - } -} -#endif /* READLINE */ -#endif /* 0 */ - -#if defined (HISTORY) -/* A list of tokens which can be followed by newlines, but not by - semi-colons. When concatenating multiple lines of history, the - newline separator for such tokens is replaced with a space. */ -static const int no_semi_successors[] = { - '\n', '{', '(', ')', ';', '&', '|', - CASE, DO, ELSE, IF, SEMI_SEMI, SEMI_AND, SEMI_SEMI_AND, THEN, UNTIL, - WHILE, AND_AND, OR_OR, IN, - 0 -}; - -/* If we are not within a delimited expression, try to be smart - about which separators can be semi-colons and which must be - newlines. Returns the string that should be added into the - history entry. LINE is the line we're about to add; it helps - make some more intelligent decisions in certain cases. */ -char * -history_delimiting_chars (line) - const char *line; -{ - static int last_was_heredoc = 0; /* was the last entry the start of a here document? */ - register int i; - - if ((parser_state & PST_HEREDOC) == 0) - last_was_heredoc = 0; - - if (dstack.delimiter_depth != 0) - return ("\n"); - - /* We look for current_command_line_count == 2 because we are looking to - add the first line of the body of the here document (the second line - of the command). We also keep LAST_WAS_HEREDOC as a private sentinel - variable to note when we think we added the first line of a here doc - (the one with a "<<" somewhere in it) */ - if (parser_state & PST_HEREDOC) - { - if (last_was_heredoc) - { - last_was_heredoc = 0; - return "\n"; - } - return (current_command_line_count == 2 ? "\n" : ""); - } - - /* First, handle some special cases. */ - /*(*/ - /* If we just read `()', assume it's a function definition, and don't - add a semicolon. If the token before the `)' was not `(', and we're - not in the midst of parsing a case statement, assume it's a - parenthesized command and add the semicolon. */ - /*)(*/ - if (token_before_that == ')') - { - if (two_tokens_ago == '(') /*)*/ /* function def */ - return " "; - /* This does not work for subshells inside case statement - command lists. It's a suboptimal solution. */ - else if (parser_state & PST_CASESTMT) /* case statement pattern */ - return " "; - else - return "; "; /* (...) subshell */ - } - else if (token_before_that == WORD && two_tokens_ago == FUNCTION) - return " "; /* function def using `function name' without `()' */ - - /* If we're not in a here document, but we think we're about to parse one, - and we would otherwise return a `;', return a newline to delimit the - line with the here-doc delimiter */ - else if ((parser_state & PST_HEREDOC) == 0 && current_command_line_count > 1 && last_read_token == '\n' && strstr (line, "<<")) - { - last_was_heredoc = 1; - return "\n"; - } - - else if (token_before_that == WORD && two_tokens_ago == FOR) - { - /* Tricky. `for i\nin ...' should not have a semicolon, but - `for i\ndo ...' should. We do what we can. */ - for (i = shell_input_line_index; whitespace (shell_input_line[i]); i++) - ; - if (shell_input_line[i] && shell_input_line[i] == 'i' && shell_input_line[i+1] == 'n') - return " "; - return ";"; - } - else if (two_tokens_ago == CASE && token_before_that == WORD && (parser_state & PST_CASESTMT)) - return " "; - - for (i = 0; no_semi_successors[i]; i++) - { - if (token_before_that == no_semi_successors[i]) - return (" "); - } - - return ("; "); -} -#endif /* HISTORY */ - -/* Issue a prompt, or prepare to issue a prompt when the next character - is read. */ -static void -prompt_again () -{ - char *temp_prompt; - - if (interactive == 0 || expanding_alias ()) /* XXX */ - return; - - ps1_prompt = get_string_value ("PS1"); - ps2_prompt = get_string_value ("PS2"); - - if (!prompt_string_pointer) - prompt_string_pointer = &ps1_prompt; - - temp_prompt = *prompt_string_pointer - ? decode_prompt_string (*prompt_string_pointer) - : (char *)NULL; - - if (temp_prompt == 0) - { - temp_prompt = (char *)xmalloc (1); - temp_prompt[0] = '\0'; - } - - current_prompt_string = *prompt_string_pointer; - prompt_string_pointer = &ps2_prompt; - -#if defined (READLINE) - if (!no_line_editing) - { - FREE (current_readline_prompt); - current_readline_prompt = temp_prompt; - } - else -#endif /* READLINE */ - { - FREE (current_decoded_prompt); - current_decoded_prompt = temp_prompt; - } -} - -int -get_current_prompt_level () -{ - return ((current_prompt_string && current_prompt_string == ps2_prompt) ? 2 : 1); -} - -void -set_current_prompt_level (x) - int x; -{ - prompt_string_pointer = (x == 2) ? &ps2_prompt : &ps1_prompt; - current_prompt_string = *prompt_string_pointer; -} - -static void -print_prompt () -{ - fprintf (stderr, "%s", current_decoded_prompt); - fflush (stderr); -} - -/* Return a string which will be printed as a prompt. The string - may contain special characters which are decoded as follows: - - \a bell (ascii 07) - \d the date in Day Mon Date format - \e escape (ascii 033) - \h the hostname up to the first `.' - \H the hostname - \j the number of active jobs - \l the basename of the shell's tty device name - \n CRLF - \r CR - \s the name of the shell - \t the time in 24-hour hh:mm:ss format - \T the time in 12-hour hh:mm:ss format - \@ the time in 12-hour hh:mm am/pm format - \A the time in 24-hour hh:mm format - \D{fmt} the result of passing FMT to strftime(3) - \u your username - \v the version of bash (e.g., 2.00) - \V the release of bash, version + patchlevel (e.g., 2.00.0) - \w the current working directory - \W the last element of $PWD - \! the history number of this command - \# the command number of this command - \$ a $ or a # if you are root - \nnn character code nnn in octal - \\ a backslash - \[ begin a sequence of non-printing chars - \] end a sequence of non-printing chars -*/ -#define PROMPT_GROWTH 48 -char * -decode_prompt_string (string) - char *string; -{ - WORD_LIST *list; - char *result, *t; - struct dstack save_dstack; - int last_exit_value, last_comsub_pid; -#if defined (PROMPT_STRING_DECODE) - int result_size, result_index; - int c, n, i; - char *temp, octal_string[4]; - struct tm *tm; - time_t the_time; - char timebuf[128]; - char *timefmt; - - result = (char *)xmalloc (result_size = PROMPT_GROWTH); - result[result_index = 0] = 0; - temp = (char *)NULL; - - while (c = *string++) - { - if (posixly_correct && c == '!') - { - if (*string == '!') - { - temp = savestring ("!"); - goto add_string; - } - else - { -#if !defined (HISTORY) - temp = savestring ("1"); -#else /* HISTORY */ - temp = itos (history_number ()); -#endif /* HISTORY */ - string--; /* add_string increments string again. */ - goto add_string; - } - } - if (c == '\\') - { - c = *string; - - switch (c) - { - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - strncpy (octal_string, string, 3); - octal_string[3] = '\0'; - - n = read_octal (octal_string); - temp = (char *)xmalloc (3); - - if (n == CTLESC || n == CTLNUL) - { - temp[0] = CTLESC; - temp[1] = n; - temp[2] = '\0'; - } - else if (n == -1) - { - temp[0] = '\\'; - temp[1] = '\0'; - } - else - { - temp[0] = n; - temp[1] = '\0'; - } - - for (c = 0; n != -1 && c < 3 && ISOCTAL (*string); c++) - string++; - - c = 0; /* tested at add_string: */ - goto add_string; - - case 'd': - case 't': - case 'T': - case '@': - case 'A': - /* Make the current time/date into a string. */ - (void) time (&the_time); -#if defined (HAVE_TZSET) - sv_tz ("TZ"); /* XXX -- just make sure */ -#endif - tm = localtime (&the_time); - - if (c == 'd') - n = strftime (timebuf, sizeof (timebuf), "%a %b %d", tm); - else if (c == 't') - n = strftime (timebuf, sizeof (timebuf), "%H:%M:%S", tm); - else if (c == 'T') - n = strftime (timebuf, sizeof (timebuf), "%I:%M:%S", tm); - else if (c == '@') - n = strftime (timebuf, sizeof (timebuf), "%I:%M %p", tm); - else if (c == 'A') - n = strftime (timebuf, sizeof (timebuf), "%H:%M", tm); - - if (n == 0) - timebuf[0] = '\0'; - else - timebuf[sizeof(timebuf) - 1] = '\0'; - - temp = savestring (timebuf); - goto add_string; - - case 'D': /* strftime format */ - if (string[1] != '{') /* } */ - goto not_escape; - - (void) time (&the_time); - tm = localtime (&the_time); - string += 2; /* skip { */ - timefmt = xmalloc (strlen (string) + 3); - for (t = timefmt; *string && *string != '}'; ) - *t++ = *string++; - *t = '\0'; - c = *string; /* tested at add_string */ - if (timefmt[0] == '\0') - { - timefmt[0] = '%'; - timefmt[1] = 'X'; /* locale-specific current time */ - timefmt[2] = '\0'; - } - n = strftime (timebuf, sizeof (timebuf), timefmt, tm); - free (timefmt); - - if (n == 0) - timebuf[0] = '\0'; - else - timebuf[sizeof(timebuf) - 1] = '\0'; - - if (promptvars || posixly_correct) - /* Make sure that expand_prompt_string is called with a - second argument of Q_DOUBLE_QUOTES if we use this - function here. */ - temp = sh_backslash_quote_for_double_quotes (timebuf); - else - temp = savestring (timebuf); - goto add_string; - - case 'n': - temp = (char *)xmalloc (3); - temp[0] = no_line_editing ? '\n' : '\r'; - temp[1] = no_line_editing ? '\0' : '\n'; - temp[2] = '\0'; - goto add_string; - - case 's': - temp = base_pathname (shell_name); - temp = savestring (temp); - goto add_string; - - case 'v': - case 'V': - temp = (char *)xmalloc (16); - if (c == 'v') - strcpy (temp, dist_version); - else - sprintf (temp, "%s.%d", dist_version, patch_level); - goto add_string; - - case 'w': - case 'W': - { - /* Use the value of PWD because it is much more efficient. */ - char t_string[PATH_MAX]; - int tlen; - - temp = get_string_value ("PWD"); - - if (temp == 0) - { - if (getcwd (t_string, sizeof(t_string)) == 0) - { - t_string[0] = '.'; - tlen = 1; - } - else - tlen = strlen (t_string); - } - else - { - tlen = sizeof (t_string) - 1; - strncpy (t_string, temp, tlen); - } - t_string[tlen] = '\0'; - -#if defined (MACOSX) - /* Convert from "fs" format to "input" format */ - temp = fnx_fromfs (t_string, strlen (t_string)); - if (temp != t_string) - strcpy (t_string, temp); -#endif - -#define ROOT_PATH(x) ((x)[0] == '/' && (x)[1] == 0) -#define DOUBLE_SLASH_ROOT(x) ((x)[0] == '/' && (x)[1] == '/' && (x)[2] == 0) - /* Abbreviate \W as ~ if $PWD == $HOME */ - if (c == 'W' && (((t = get_string_value ("HOME")) == 0) || STREQ (t, t_string) == 0)) - { - if (ROOT_PATH (t_string) == 0 && DOUBLE_SLASH_ROOT (t_string) == 0) - { - t = strrchr (t_string, '/'); - if (t) - memmove (t_string, t + 1, strlen (t)); /* strlen(t) to copy NULL */ - } - } -#undef ROOT_PATH -#undef DOUBLE_SLASH_ROOT - else - /* polite_directory_format is guaranteed to return a string - no longer than PATH_MAX - 1 characters. */ - strcpy (t_string, polite_directory_format (t_string)); - - temp = trim_pathname (t_string, PATH_MAX - 1); - /* If we're going to be expanding the prompt string later, - quote the directory name. */ - if (promptvars || posixly_correct) - /* Make sure that expand_prompt_string is called with a - second argument of Q_DOUBLE_QUOTES if we use this - function here. */ - temp = sh_backslash_quote_for_double_quotes (t_string); - else - temp = savestring (t_string); - - goto add_string; - } - - case 'u': - if (current_user.user_name == 0) - get_current_user_info (); - temp = savestring (current_user.user_name); - goto add_string; - - case 'h': - case 'H': - temp = savestring (current_host_name); - if (c == 'h' && (t = (char *)strchr (temp, '.'))) - *t = '\0'; - goto add_string; - - case '#': - temp = itos (current_command_number); - goto add_string; - - case '!': -#if !defined (HISTORY) - temp = savestring ("1"); -#else /* HISTORY */ - temp = itos (history_number ()); -#endif /* HISTORY */ - goto add_string; - - case '$': - t = temp = (char *)xmalloc (3); - if ((promptvars || posixly_correct) && (current_user.euid != 0)) - *t++ = '\\'; - *t++ = current_user.euid == 0 ? '#' : '$'; - *t = '\0'; - goto add_string; - - case 'j': - temp = itos (count_all_jobs ()); - goto add_string; - - case 'l': -#if defined (HAVE_TTYNAME) - temp = (char *)ttyname (fileno (stdin)); - t = temp ? base_pathname (temp) : "tty"; - temp = savestring (t); -#else - temp = savestring ("tty"); -#endif /* !HAVE_TTYNAME */ - goto add_string; - -#if defined (READLINE) - case '[': - case ']': - if (no_line_editing) - { - string++; - break; - } - temp = (char *)xmalloc (3); - n = (c == '[') ? RL_PROMPT_START_IGNORE : RL_PROMPT_END_IGNORE; - i = 0; - if (n == CTLESC || n == CTLNUL) - temp[i++] = CTLESC; - temp[i++] = n; - temp[i] = '\0'; - goto add_string; -#endif /* READLINE */ - - case '\\': - case 'a': - case 'e': - case 'r': - temp = (char *)xmalloc (2); - if (c == 'a') - temp[0] = '\07'; - else if (c == 'e') - temp[0] = '\033'; - else if (c == 'r') - temp[0] = '\r'; - else /* (c == '\\') */ - temp[0] = c; - temp[1] = '\0'; - goto add_string; - - default: -not_escape: - temp = (char *)xmalloc (3); - temp[0] = '\\'; - temp[1] = c; - temp[2] = '\0'; - - add_string: - if (c) - string++; - result = - sub_append_string (temp, result, &result_index, &result_size); - temp = (char *)NULL; /* Freed in sub_append_string (). */ - result[result_index] = '\0'; - break; - } - } - else - { - RESIZE_MALLOCED_BUFFER (result, result_index, 3, result_size, PROMPT_GROWTH); - result[result_index++] = c; - result[result_index] = '\0'; - } - } -#else /* !PROMPT_STRING_DECODE */ - result = savestring (string); -#endif /* !PROMPT_STRING_DECODE */ - - /* Save the delimiter stack and point `dstack' to temp space so any - command substitutions in the prompt string won't result in screwing - up the parser's quoting state. */ - save_dstack = dstack; - dstack = temp_dstack; - dstack.delimiter_depth = 0; - - /* Perform variable and parameter expansion and command substitution on - the prompt string. */ - if (promptvars || posixly_correct) - { - last_exit_value = last_command_exit_value; - last_comsub_pid = last_command_subst_pid; - list = expand_prompt_string (result, Q_DOUBLE_QUOTES, 0); - free (result); - result = string_list (list); - dispose_words (list); - last_command_exit_value = last_exit_value; - last_command_subst_pid = last_comsub_pid; - } - else - { - t = dequote_string (result); - free (result); - result = t; - } - - dstack = save_dstack; - - return (result); -} - -/************************************************ - * * - * ERROR HANDLING * - * * - ************************************************/ - -/* Report a syntax error, and restart the parser. Call here for fatal - errors. */ -int -yyerror (msg) - const char *msg; -{ - report_syntax_error ((char *)NULL); - reset_parser (); - return (0); -} - -static char * -error_token_from_token (tok) - int tok; -{ - char *t; - - if (t = find_token_in_alist (tok, word_token_alist, 0)) - return t; - - if (t = find_token_in_alist (tok, other_token_alist, 0)) - return t; - - t = (char *)NULL; - /* This stuff is dicy and needs closer inspection */ - switch (current_token) - { - case WORD: - case ASSIGNMENT_WORD: - if (yylval.word) - t = savestring (yylval.word->word); - break; - case NUMBER: - t = itos (yylval.number); - break; - case ARITH_CMD: - if (yylval.word_list) - t = string_list (yylval.word_list); - break; - case ARITH_FOR_EXPRS: - if (yylval.word_list) - t = string_list_internal (yylval.word_list, " ; "); - break; - case COND_CMD: - t = (char *)NULL; /* punt */ - break; - } - - return t; -} - -static char * -error_token_from_text () -{ - char *msg, *t; - int token_end, i; - - t = shell_input_line; - i = shell_input_line_index; - token_end = 0; - msg = (char *)NULL; - - if (i && t[i] == '\0') - i--; - - while (i && (whitespace (t[i]) || t[i] == '\n')) - i--; - - if (i) - token_end = i + 1; - - while (i && (member (t[i], " \n\t;|&") == 0)) - i--; - - while (i != token_end && (whitespace (t[i]) || t[i] == '\n')) - i++; - - /* Return our idea of the offending token. */ - if (token_end || (i == 0 && token_end == 0)) - { - if (token_end) - msg = substring (t, i, token_end); - else /* one-character token */ - { - msg = (char *)xmalloc (2); - msg[0] = t[i]; - msg[1] = '\0'; - } - } - - return (msg); -} - -static void -print_offending_line () -{ - char *msg; - int token_end; - - msg = savestring (shell_input_line); - token_end = strlen (msg); - while (token_end && msg[token_end - 1] == '\n') - msg[--token_end] = '\0'; - - parser_error (line_number, "`%s'", msg); - free (msg); -} - -/* Report a syntax error with line numbers, etc. - Call here for recoverable errors. If you have a message to print, - then place it in MESSAGE, otherwise pass NULL and this will figure - out an appropriate message for you. */ -static void -report_syntax_error (message) - char *message; -{ - char *msg, *p; - - if (message) - { - parser_error (line_number, "%s", message); - if (interactive && EOF_Reached) - EOF_Reached = 0; - last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE; - return; - } - - /* If the line of input we're reading is not null, try to find the - objectionable token. First, try to figure out what token the - parser's complaining about by looking at current_token. */ - if (current_token != 0 && EOF_Reached == 0 && (msg = error_token_from_token (current_token))) - { - if (ansic_shouldquote (msg)) - { - p = ansic_quote (msg, 0, NULL); - free (msg); - msg = p; - } - parser_error (line_number, _("syntax error near unexpected token `%s'"), msg); - free (msg); - - if (interactive == 0) - print_offending_line (); - - last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE; - return; - } - - /* If looking at the current token doesn't prove fruitful, try to find the - offending token by analyzing the text of the input line near the current - input line index and report what we find. */ - if (shell_input_line && *shell_input_line) - { - msg = error_token_from_text (); - if (msg) - { - parser_error (line_number, _("syntax error near `%s'"), msg); - free (msg); - } - - /* If not interactive, print the line containing the error. */ - if (interactive == 0) - print_offending_line (); - } - else - { - msg = EOF_Reached ? _("syntax error: unexpected end of file") : _("syntax error"); - parser_error (line_number, "%s", msg); - /* When the shell is interactive, this file uses EOF_Reached - only for error reporting. Other mechanisms are used to - decide whether or not to exit. */ - if (interactive && EOF_Reached) - EOF_Reached = 0; - } - - last_command_exit_value = parse_and_execute_level ? EX_BADSYNTAX : EX_BADUSAGE; -} - -/* ??? Needed function. ??? We have to be able to discard the constructs - created during parsing. In the case of error, we want to return - allocated objects to the memory pool. In the case of no error, we want - to throw away the information about where the allocated objects live. - (dispose_command () will actually free the command.) */ -static void -discard_parser_constructs (error_p) - int error_p; -{ -} - -/************************************************ - * * - * EOF HANDLING * - * * - ************************************************/ - -/* Do that silly `type "bye" to exit' stuff. You know, "ignoreeof". */ - -/* A flag denoting whether or not ignoreeof is set. */ -int ignoreeof = 0; - -/* The number of times that we have encountered an EOF character without - another character intervening. When this gets above the limit, the - shell terminates. */ -int eof_encountered = 0; - -/* The limit for eof_encountered. */ -int eof_encountered_limit = 10; - -/* If we have EOF as the only input unit, this user wants to leave - the shell. If the shell is not interactive, then just leave. - Otherwise, if ignoreeof is set, and we haven't done this the - required number of times in a row, print a message. */ -static void -handle_eof_input_unit () -{ - if (interactive) - { - /* shell.c may use this to decide whether or not to write out the - history, among other things. We use it only for error reporting - in this file. */ - if (EOF_Reached) - EOF_Reached = 0; - - /* If the user wants to "ignore" eof, then let her do so, kind of. */ - if (ignoreeof) - { - if (eof_encountered < eof_encountered_limit) - { - fprintf (stderr, _("Use \"%s\" to leave the shell.\n"), - login_shell ? "logout" : "exit"); - eof_encountered++; - /* Reset the parsing state. */ - last_read_token = current_token = '\n'; - /* Reset the prompt string to be $PS1. */ - prompt_string_pointer = (char **)NULL; - prompt_again (); - return; - } - } - - /* In this case EOF should exit the shell. Do it now. */ - reset_parser (); - exit_builtin ((WORD_LIST *)NULL); - } - else - { - /* We don't write history files, etc., for non-interactive shells. */ - EOF_Reached = 1; - } -} - -/************************************************ - * * - * STRING PARSING FUNCTIONS * - * * - ************************************************/ - -/* It's very important that these two functions treat the characters - between ( and ) identically. */ - -static WORD_LIST parse_string_error; - -/* Take a string and run it through the shell parser, returning the - resultant word list. Used by compound array assignment. */ -WORD_LIST * -parse_string_to_word_list (s, flags, whom) - char *s; - int flags; - const char *whom; -{ - WORD_LIST *wl; - int tok, orig_current_token, orig_line_number, orig_input_terminator; - int orig_line_count; - int old_echo_input, old_expand_aliases; -#if defined (HISTORY) - int old_remember_on_history, old_history_expansion_inhibited; -#endif - -#if defined (HISTORY) - old_remember_on_history = remember_on_history; -# if defined (BANG_HISTORY) - old_history_expansion_inhibited = history_expansion_inhibited; -# endif - bash_history_disable (); -#endif - - orig_line_number = line_number; - orig_line_count = current_command_line_count; - orig_input_terminator = shell_input_line_terminator; - old_echo_input = echo_input_at_read; - old_expand_aliases = expand_aliases; - - push_stream (1); - last_read_token = WORD; /* WORD to allow reserved words here */ - current_command_line_count = 0; - echo_input_at_read = expand_aliases = 0; - - with_input_from_string (s, whom); - wl = (WORD_LIST *)NULL; - - if (flags & 1) - parser_state |= PST_COMPASSIGN|PST_REPARSE; - - while ((tok = read_token (READ)) != yacc_EOF) - { - if (tok == '\n' && *bash_input.location.string == '\0') - break; - if (tok == '\n') /* Allow newlines in compound assignments */ - continue; - if (tok != WORD && tok != ASSIGNMENT_WORD) - { - line_number = orig_line_number + line_number - 1; - orig_current_token = current_token; - current_token = tok; - yyerror (NULL); /* does the right thing */ - current_token = orig_current_token; - if (wl) - dispose_words (wl); - wl = &parse_string_error; - break; - } - wl = make_word_list (yylval.word, wl); - } - - last_read_token = '\n'; - pop_stream (); - -#if defined (HISTORY) - remember_on_history = old_remember_on_history; -# if defined (BANG_HISTORY) - history_expansion_inhibited = old_history_expansion_inhibited; -# endif /* BANG_HISTORY */ -#endif /* HISTORY */ - - echo_input_at_read = old_echo_input; - expand_aliases = old_expand_aliases; - - current_command_line_count = orig_line_count; - shell_input_line_terminator = orig_input_terminator; - - if (flags & 1) - parser_state &= ~(PST_COMPASSIGN|PST_REPARSE); - - if (wl == &parse_string_error) - { - last_command_exit_value = EXECUTION_FAILURE; - if (interactive_shell == 0 && posixly_correct) - jump_to_top_level (FORCE_EOF); - else - jump_to_top_level (DISCARD); - } - - return (REVERSE_LIST (wl, WORD_LIST *)); -} - -static char * -parse_compound_assignment (retlenp) - int *retlenp; -{ - WORD_LIST *wl, *rl; - int tok, orig_line_number, orig_token_size, orig_last_token, assignok; - char *saved_token, *ret; - - saved_token = token; - orig_token_size = token_buffer_size; - orig_line_number = line_number; - orig_last_token = last_read_token; - - last_read_token = WORD; /* WORD to allow reserved words here */ - - token = (char *)NULL; - token_buffer_size = 0; - - assignok = parser_state&PST_ASSIGNOK; /* XXX */ - - wl = (WORD_LIST *)NULL; /* ( */ - parser_state |= PST_COMPASSIGN; - - while ((tok = read_token (READ)) != ')') - { - if (tok == '\n') /* Allow newlines in compound assignments */ - { - if (SHOULD_PROMPT ()) - prompt_again (); - continue; - } - if (tok != WORD && tok != ASSIGNMENT_WORD) - { - current_token = tok; /* for error reporting */ - if (tok == yacc_EOF) /* ( */ - parser_error (orig_line_number, _("unexpected EOF while looking for matching `)'")); - else - yyerror(NULL); /* does the right thing */ - if (wl) - dispose_words (wl); - wl = &parse_string_error; - break; - } - wl = make_word_list (yylval.word, wl); - } - - FREE (token); - token = saved_token; - token_buffer_size = orig_token_size; - - parser_state &= ~PST_COMPASSIGN; - - if (wl == &parse_string_error) - { - last_command_exit_value = EXECUTION_FAILURE; - last_read_token = '\n'; /* XXX */ - if (interactive_shell == 0 && posixly_correct) - jump_to_top_level (FORCE_EOF); - else - jump_to_top_level (DISCARD); - } - - last_read_token = orig_last_token; /* XXX - was WORD? */ - - if (wl) - { - rl = REVERSE_LIST (wl, WORD_LIST *); - ret = string_list (rl); - dispose_words (rl); - } - else - ret = (char *)NULL; - - if (retlenp) - *retlenp = (ret && *ret) ? strlen (ret) : 0; - - if (assignok) - parser_state |= PST_ASSIGNOK; - - return ret; -} - -/************************************************ - * * - * SAVING AND RESTORING PARTIAL PARSE STATE * - * * - ************************************************/ - -sh_parser_state_t * -save_parser_state (ps) - sh_parser_state_t *ps; -{ - if (ps == 0) - ps = (sh_parser_state_t *)xmalloc (sizeof (sh_parser_state_t)); - if (ps == 0) - return ((sh_parser_state_t *)NULL); - - ps->parser_state = parser_state; - ps->token_state = save_token_state (); - - ps->input_line_terminator = shell_input_line_terminator; - ps->eof_encountered = eof_encountered; - - ps->prompt_string_pointer = prompt_string_pointer; - - ps->current_command_line_count = current_command_line_count; - -#if defined (HISTORY) - ps->remember_on_history = remember_on_history; -# if defined (BANG_HISTORY) - ps->history_expansion_inhibited = history_expansion_inhibited; -# endif -#endif - - ps->last_command_exit_value = last_command_exit_value; -#if defined (ARRAY_VARS) - ps->pipestatus = save_pipestatus_array (); -#endif - - ps->last_shell_builtin = last_shell_builtin; - ps->this_shell_builtin = this_shell_builtin; - - ps->expand_aliases = expand_aliases; - ps->echo_input_at_read = echo_input_at_read; - - ps->token = token; - ps->token_buffer_size = token_buffer_size; - /* Force reallocation on next call to read_token_word */ - token = 0; - token_buffer_size = 0; - - return (ps); -} - -void -restore_parser_state (ps) - sh_parser_state_t *ps; -{ - if (ps == 0) - return; - - parser_state = ps->parser_state; - if (ps->token_state) - { - restore_token_state (ps->token_state); - free (ps->token_state); - } - - shell_input_line_terminator = ps->input_line_terminator; - eof_encountered = ps->eof_encountered; - - prompt_string_pointer = ps->prompt_string_pointer; - - current_command_line_count = ps->current_command_line_count; - -#if defined (HISTORY) - remember_on_history = ps->remember_on_history; -# if defined (BANG_HISTORY) - history_expansion_inhibited = ps->history_expansion_inhibited; -# endif -#endif - - last_command_exit_value = ps->last_command_exit_value; -#if defined (ARRAY_VARS) - restore_pipestatus_array (ps->pipestatus); -#endif - - last_shell_builtin = ps->last_shell_builtin; - this_shell_builtin = ps->this_shell_builtin; - - expand_aliases = ps->expand_aliases; - echo_input_at_read = ps->echo_input_at_read; - - FREE (token); - token = ps->token; - token_buffer_size = ps->token_buffer_size; -} - -sh_input_line_state_t * -save_input_line_state (ls) - sh_input_line_state_t *ls; -{ - if (ls == 0) - ls = (sh_input_line_state_t *)xmalloc (sizeof (sh_input_line_state_t)); - if (ls == 0) - return ((sh_input_line_state_t *)NULL); - - ls->input_line = shell_input_line; - ls->input_line_size = shell_input_line_size; - ls->input_line_len = shell_input_line_len; - ls->input_line_index = shell_input_line_index; - - /* force reallocation */ - shell_input_line = 0; - shell_input_line_size = shell_input_line_len = shell_input_line_index = 0; - - return ls; -} - -void -restore_input_line_state (ls) - sh_input_line_state_t *ls; -{ - FREE (shell_input_line); - shell_input_line = ls->input_line; - shell_input_line_size = ls->input_line_size; - shell_input_line_len = ls->input_line_len; - shell_input_line_index = ls->input_line_index; - - set_line_mbstate (); -} - -/************************************************ - * * - * MULTIBYTE CHARACTER HANDLING * - * * - ************************************************/ - -#if defined (HANDLE_MULTIBYTE) -static void -set_line_mbstate () -{ - int i, previ, len, c; - mbstate_t mbs, prevs; - size_t mbclen; - - if (shell_input_line == NULL) - return; - len = strlen (shell_input_line); /* XXX - shell_input_line_len ? */ - FREE (shell_input_line_property); - shell_input_line_property = (char *)xmalloc (len + 1); - - memset (&prevs, '\0', sizeof (mbstate_t)); - for (i = previ = 0; i < len; i++) - { - mbs = prevs; - - c = shell_input_line[i]; - if (c == EOF) - { - int j; - for (j = i; j < len; j++) - shell_input_line_property[j] = 1; - break; - } - - mbclen = mbrlen (shell_input_line + previ, i - previ + 1, &mbs); - if (mbclen == 1 || mbclen == (size_t)-1) - { - mbclen = 1; - previ = i + 1; - } - else if (mbclen == (size_t)-2) - mbclen = 0; - else if (mbclen > 1) - { - mbclen = 0; - previ = i + 1; - prevs = mbs; - } - else - { - /* XXX - what to do if mbrlen returns 0? (null wide character) */ - int j; - for (j = i; j < len; j++) - shell_input_line_property[j] = 1; - break; - } - - shell_input_line_property[i] = mbclen; - } -} -#endif /* HANDLE_MULTIBYTE */ diff --git a/print_cmd.c~ b/print_cmd.c~ deleted file mode 100644 index 34cec3f33..000000000 --- a/print_cmd.c~ +++ /dev/null @@ -1,1576 +0,0 @@ -/* print_command -- A way to make readable commands from a command tree. */ - -/* Copyright (C) 1989-2011 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#include "config.h" - -#include - -#if defined (HAVE_UNISTD_H) -# ifdef _MINIX -# include -# endif -# include -#endif - -#if defined (PREFER_STDARG) -# include -#else -# include -#endif - -#include "bashansi.h" -#include "bashintl.h" - -#include "shell.h" -#include "flags.h" -#include /* use <...> so we pick it up from the build directory */ - -#include "shmbutil.h" - -#include "builtins/common.h" - -#if !HAVE_DECL_PRINTF -extern int printf __P((const char *, ...)); /* Yuck. Double yuck. */ -#endif - -extern int indirection_level; - -static int indentation; -static int indentation_amount = 4; - -#if defined (PREFER_STDARG) -typedef void PFUNC __P((const char *, ...)); - -static void cprintf __P((const char *, ...)) __attribute__((__format__ (printf, 1, 2))); -static void xprintf __P((const char *, ...)) __attribute__((__format__ (printf, 1, 2))); -#else -#define PFUNC VFunction -static void cprintf (); -static void xprintf (); -#endif - -static void reset_locals __P((void)); -static void newline __P((char *)); -static void indent __P((int)); -static void semicolon __P((void)); -static void the_printed_command_resize __P((int)); - -static void make_command_string_internal __P((COMMAND *)); -static void _print_word_list __P((WORD_LIST *, char *, PFUNC *)); -static void command_print_word_list __P((WORD_LIST *, char *)); -static void print_case_clauses __P((PATTERN_LIST *)); -static void print_redirection_list __P((REDIRECT *)); -static void print_redirection __P((REDIRECT *)); -static void print_heredoc_header __P((REDIRECT *)); -static void print_heredoc_body __P((REDIRECT *)); -static void print_heredocs __P((REDIRECT *)); -static void print_deferred_heredocs __P((const char *)); - -static void print_for_command __P((FOR_COM *)); -#if defined (ARITH_FOR_COMMAND) -static void print_arith_for_command __P((ARITH_FOR_COM *)); -#endif -#if defined (SELECT_COMMAND) -static void print_select_command __P((SELECT_COM *)); -#endif -static void print_group_command __P((GROUP_COM *)); -static void print_case_command __P((CASE_COM *)); -static void print_while_command __P((WHILE_COM *)); -static void print_until_command __P((WHILE_COM *)); -static void print_until_or_while __P((WHILE_COM *, char *)); -static void print_if_command __P((IF_COM *)); -#if defined (COND_COMMAND) -static void print_cond_node __P((COND_COM *)); -#endif -static void print_function_def __P((FUNCTION_DEF *)); - -#define PRINTED_COMMAND_INITIAL_SIZE 64 -#define PRINTED_COMMAND_GROW_SIZE 128 - -char *the_printed_command = (char *)NULL; -int the_printed_command_size = 0; -int command_string_index = 0; - -int xtrace_fd = -1; -FILE *xtrace_fp = 0; - -#define CHECK_XTRACE_FP xtrace_fp = (xtrace_fp ? xtrace_fp : stderr) - -/* shell expansion characters: used in print_redirection_list */ -#define EXPCHAR(c) ((c) == '{' || (c) == '~' || (c) == '$' || (c) == '`') - -#define PRINT_DEFERRED_HEREDOCS(x) \ - do { \ - if (deferred_heredocs) \ - print_deferred_heredocs (x); \ - } while (0) - -/* Non-zero means the stuff being printed is inside of a function def. */ -static int inside_function_def; -static int skip_this_indent; -static int was_heredoc; -static int printing_connection; -static REDIRECT *deferred_heredocs; - -/* The depth of the group commands that we are currently printing. This - includes the group command that is a function body. */ -static int group_command_nesting; - -/* A buffer to indicate the indirection level (PS4) when set -x is enabled. */ -static char *indirection_string = 0; -static int indirection_stringsiz = 0; - -/* Print COMMAND (a command tree) on standard output. */ -void -print_command (command) - COMMAND *command; -{ - command_string_index = 0; - printf ("%s", make_command_string (command)); -} - -/* Make a string which is the printed representation of the command - tree in COMMAND. We return this string. However, the string is - not consed, so you have to do that yourself if you want it to - remain around. */ -char * -make_command_string (command) - COMMAND *command; -{ - command_string_index = was_heredoc = 0; - deferred_heredocs = 0; - make_command_string_internal (command); - return (the_printed_command); -} - -/* The internal function. This is the real workhorse. */ -static void -make_command_string_internal (command) - COMMAND *command; -{ - char s[3]; - - if (command == 0) - cprintf (""); - else - { - if (skip_this_indent) - skip_this_indent--; - else - indent (indentation); - - if (command->flags & CMD_TIME_PIPELINE) - { - cprintf ("time "); - if (command->flags & CMD_TIME_POSIX) - cprintf ("-p "); - } - - if (command->flags & CMD_INVERT_RETURN) - cprintf ("! "); - - switch (command->type) - { - case cm_for: - print_for_command (command->value.For); - break; - -#if defined (ARITH_FOR_COMMAND) - case cm_arith_for: - print_arith_for_command (command->value.ArithFor); - break; -#endif - -#if defined (SELECT_COMMAND) - case cm_select: - print_select_command (command->value.Select); - break; -#endif - - case cm_case: - print_case_command (command->value.Case); - break; - - case cm_while: - print_while_command (command->value.While); - break; - - case cm_until: - print_until_command (command->value.While); - break; - - case cm_if: - print_if_command (command->value.If); - break; - -#if defined (DPAREN_ARITHMETIC) - case cm_arith: - print_arith_command (command->value.Arith->exp); - break; -#endif - -#if defined (COND_COMMAND) - case cm_cond: - print_cond_command (command->value.Cond); - break; -#endif - - case cm_simple: - print_simple_command (command->value.Simple); - break; - - case cm_connection: - - skip_this_indent++; - printing_connection++; - make_command_string_internal (command->value.Connection->first); - - switch (command->value.Connection->connector) - { - case '&': - case '|': - { - char c = command->value.Connection->connector; - - s[0] = ' '; - s[1] = c; - s[2] = '\0'; - - print_deferred_heredocs (s); - - if (c != '&' || command->value.Connection->second) - { - cprintf (" "); - skip_this_indent++; - } - } - break; - - case AND_AND: - print_deferred_heredocs (" && "); - if (command->value.Connection->second) - skip_this_indent++; - break; - - case OR_OR: - print_deferred_heredocs (" || "); - if (command->value.Connection->second) - skip_this_indent++; - break; - - case ';': - if (deferred_heredocs == 0) - { - if (was_heredoc == 0) - cprintf (";"); - else - was_heredoc = 0; - } - else - print_deferred_heredocs (inside_function_def ? "" : ";"); - - if (inside_function_def) - cprintf ("\n"); - else - { - cprintf (" "); - if (command->value.Connection->second) - skip_this_indent++; - } - break; - - default: - cprintf (_("print_command: bad connector `%d'"), - command->value.Connection->connector); - break; - } - - make_command_string_internal (command->value.Connection->second); - PRINT_DEFERRED_HEREDOCS (""); - printing_connection--; - break; - - case cm_function_def: - print_function_def (command->value.Function_def); - break; - - case cm_group: - print_group_command (command->value.Group); - break; - - case cm_subshell: - cprintf ("( "); - skip_this_indent++; - make_command_string_internal (command->value.Subshell->command); - PRINT_DEFERRED_HEREDOCS (""); - cprintf (" )"); - break; - - case cm_coproc: - cprintf ("coproc %s ", command->value.Coproc->name); - skip_this_indent++; - make_command_string_internal (command->value.Coproc->command); - break; - - default: - command_error ("print_command", CMDERR_BADTYPE, command->type, 0); - break; - } - - - if (command->redirects) - { - cprintf (" "); - print_redirection_list (command->redirects); - } - } -} - -static void -_print_word_list (list, separator, pfunc) - WORD_LIST *list; - char *separator; - PFUNC *pfunc; -{ - WORD_LIST *w; - - for (w = list; w; w = w->next) - (*pfunc) ("%s%s", w->word->word, w->next ? separator : ""); -} - -void -print_word_list (list, separator) - WORD_LIST *list; - char *separator; -{ - _print_word_list (list, separator, xprintf); -} - -void -xtrace_set (fd, fp) - int fd; - FILE *fp; -{ - if (fd >= 0 && sh_validfd (fd) == 0) - { - internal_error (_("xtrace_set: %d: invalid file descriptor"), fd); - return; - } - if (fp == 0) - { - internal_error (_("xtrace_set: NULL file pointer")); - return; - } - if (fd >= 0 && fileno (fp) != fd) - internal_warning (_("xtrace fd (%d) != fileno xtrace fp (%d)"), fd, fileno (fp)); - - xtrace_fd = fd; - xtrace_fp = fp; -} - -void -xtrace_init () -{ - xtrace_set (-1, stderr); -} - -void -xtrace_reset () -{ - if (xtrace_fd >= 0 && xtrace_fp) - { - fflush (xtrace_fp); - fclose (xtrace_fp); - } - else if (xtrace_fd >= 0) - close (xtrace_fd); - - xtrace_fd = -1; - xtrace_fp = stderr; -} - -void -xtrace_fdchk (fd) - int fd; -{ - if (fd == xtrace_fd) - xtrace_reset (); -} - -/* Return a string denoting what our indirection level is. */ - -char * -indirection_level_string () -{ - register int i, j; - char *ps4; - char ps4_firstc[MB_LEN_MAX+1]; - int ps4_firstc_len, ps4_len, ineed, old; - - ps4 = get_string_value ("PS4"); - if (indirection_string == 0) - indirection_string = xmalloc (indirection_stringsiz = 100); - indirection_string[0] = '\0'; - - if (ps4 == 0 || *ps4 == '\0') - return (indirection_string); - - old = change_flag ('x', FLAG_OFF); - ps4 = decode_prompt_string (ps4); - if (old) - change_flag ('x', FLAG_ON); - - if (ps4 == 0 || *ps4 == '\0') - return (indirection_string); - -#if defined (HANDLE_MULTIBYTE) - ps4_len = strnlen (ps4, MB_CUR_MAX); - ps4_firstc_len = MBLEN (ps4, ps4_len); - if (ps4_firstc_len == 1 || ps4_firstc_len == 0 || ps4_firstc_len < 0) - { - ps4_firstc[0] = ps4[0]; - ps4_firstc[ps4_firstc_len = 1] = '\0'; - } - else - memcpy (ps4_firstc, ps4, ps4_firstc_len); -#else - ps4_firstc[0] = ps4[0]; - ps4_firstc[ps4_firstc_len = 1] = '\0'; -#endif - - /* Dynamically resize indirection_string so we have room for everything - and we don't have to truncate ps4 */ - ineed = (ps4_firstc_len * indirection_level) + strlen (ps4); - if (ineed > indirection_stringsiz - 1) - { - indirection_stringsiz = ineed + 1; - indirection_string = xrealloc (indirection_string, indirection_stringsiz); - } - - for (i = j = 0; ps4_firstc[0] && j < indirection_level && i < indirection_stringsiz - 1; i += ps4_firstc_len, j++) - { - if (ps4_firstc_len == 1) - indirection_string[i] = ps4_firstc[0]; - else - memcpy (indirection_string+i, ps4_firstc, ps4_firstc_len); - } - - for (j = ps4_firstc_len; *ps4 && ps4[j] && i < indirection_stringsiz - 1; i++, j++) - indirection_string[i] = ps4[j]; - - indirection_string[i] = '\0'; - free (ps4); - return (indirection_string); -} - -void -xtrace_print_assignment (name, value, assign_list, xflags) - char *name, *value; - int assign_list, xflags; -{ - char *nval; - - CHECK_XTRACE_FP; - - if (xflags) - fprintf (xtrace_fp, "%s", indirection_level_string ()); - - /* VALUE should not be NULL when this is called. */ - if (*value == '\0' || assign_list) - nval = value; - else if (sh_contains_shell_metas (value)) - nval = sh_single_quote (value); - else if (ansic_shouldquote (value)) - nval = ansic_quote (value, 0, (int *)0); - else - nval = value; - - if (assign_list) - fprintf (xtrace_fp, "%s=(%s)\n", name, nval); - else - fprintf (xtrace_fp, "%s=%s\n", name, nval); - - if (nval != value) - FREE (nval); - - fflush (xtrace_fp); -} - -/* A function to print the words of a simple command when set -x is on. */ -void -xtrace_print_word_list (list, xtflags) - WORD_LIST *list; - int xtflags; -{ - WORD_LIST *w; - char *t, *x; - - CHECK_XTRACE_FP; - - if (xtflags) - fprintf (xtrace_fp, "%s", indirection_level_string ()); - - for (w = list; w; w = w->next) - { - t = w->word->word; - if (t == 0 || *t == '\0') - fprintf (xtrace_fp, "''%s", w->next ? " " : ""); - else if (sh_contains_shell_metas (t)) - { - x = sh_single_quote (t); - fprintf (xtrace_fp, "%s%s", x, w->next ? " " : ""); - free (x); - } - else if (ansic_shouldquote (t)) - { - x = ansic_quote (t, 0, (int *)0); - fprintf (xtrace_fp, "%s%s", x, w->next ? " " : ""); - free (x); - } - else - fprintf (xtrace_fp, "%s%s", t, w->next ? " " : ""); - } - fprintf (xtrace_fp, "\n"); - fflush (xtrace_fp); -} - -static void -command_print_word_list (list, separator) - WORD_LIST *list; - char *separator; -{ - _print_word_list (list, separator, cprintf); -} - -void -print_for_command_head (for_command) - FOR_COM *for_command; -{ - cprintf ("for %s in ", for_command->name->word); - command_print_word_list (for_command->map_list, " "); -} - -void -xtrace_print_for_command_head (for_command) - FOR_COM *for_command; -{ - CHECK_XTRACE_FP; - fprintf (xtrace_fp, "%s", indirection_level_string ()); - fprintf (xtrace_fp, "for %s in ", for_command->name->word); - xtrace_print_word_list (for_command->map_list, 0); -} - -static void -print_for_command (for_command) - FOR_COM *for_command; -{ - print_for_command_head (for_command); - cprintf (";"); - newline ("do\n"); - - indentation += indentation_amount; - make_command_string_internal (for_command->action); - PRINT_DEFERRED_HEREDOCS (""); - semicolon (); - indentation -= indentation_amount; - - newline ("done"); -} - -#if defined (ARITH_FOR_COMMAND) -static void -print_arith_for_command (arith_for_command) - ARITH_FOR_COM *arith_for_command; -{ - cprintf ("for (("); - command_print_word_list (arith_for_command->init, " "); - cprintf ("; "); - command_print_word_list (arith_for_command->test, " "); - cprintf ("; "); - command_print_word_list (arith_for_command->step, " "); - cprintf ("))"); - newline ("do\n"); - indentation += indentation_amount; - make_command_string_internal (arith_for_command->action); - PRINT_DEFERRED_HEREDOCS (""); - semicolon (); - indentation -= indentation_amount; - newline ("done"); -} -#endif /* ARITH_FOR_COMMAND */ - -#if defined (SELECT_COMMAND) -void -print_select_command_head (select_command) - SELECT_COM *select_command; -{ - cprintf ("select %s in ", select_command->name->word); - command_print_word_list (select_command->map_list, " "); -} - -void -xtrace_print_select_command_head (select_command) - SELECT_COM *select_command; -{ - CHECK_XTRACE_FP; - fprintf (xtrace_fp, "%s", indirection_level_string ()); - fprintf (xtrace_fp, "select %s in ", select_command->name->word); - xtrace_print_word_list (select_command->map_list, 0); -} - -static void -print_select_command (select_command) - SELECT_COM *select_command; -{ - print_select_command_head (select_command); - - cprintf (";"); - newline ("do\n"); - indentation += indentation_amount; - make_command_string_internal (select_command->action); - PRINT_DEFERRED_HEREDOCS (""); - semicolon (); - indentation -= indentation_amount; - newline ("done"); -} -#endif /* SELECT_COMMAND */ - -static void -print_group_command (group_command) - GROUP_COM *group_command; -{ - group_command_nesting++; - cprintf ("{ "); - - if (inside_function_def == 0) - skip_this_indent++; - else - { - /* This is a group command { ... } inside of a function - definition, and should be printed as a multiline group - command, using the current indentation. */ - cprintf ("\n"); - indentation += indentation_amount; - } - - make_command_string_internal (group_command->command); - PRINT_DEFERRED_HEREDOCS (""); - - if (inside_function_def) - { - cprintf ("\n"); - indentation -= indentation_amount; - indent (indentation); - } - else - { - semicolon (); - cprintf (" "); - } - - cprintf ("}"); - - group_command_nesting--; -} - -void -print_case_command_head (case_command) - CASE_COM *case_command; -{ - cprintf ("case %s in ", case_command->word->word); -} - -void -xtrace_print_case_command_head (case_command) - CASE_COM *case_command; -{ - CHECK_XTRACE_FP; - fprintf (xtrace_fp, "%s", indirection_level_string ()); - fprintf (xtrace_fp, "case %s in\n", case_command->word->word); -} - -static void -print_case_command (case_command) - CASE_COM *case_command; -{ - print_case_command_head (case_command); - - if (case_command->clauses) - print_case_clauses (case_command->clauses); - newline ("esac"); -} - -static void -print_case_clauses (clauses) - PATTERN_LIST *clauses; -{ - indentation += indentation_amount; - while (clauses) - { - newline (""); - command_print_word_list (clauses->patterns, " | "); - cprintf (")\n"); - indentation += indentation_amount; - make_command_string_internal (clauses->action); - indentation -= indentation_amount; - PRINT_DEFERRED_HEREDOCS (""); - if (clauses->flags & CASEPAT_FALLTHROUGH) - newline (";&"); - else if (clauses->flags & CASEPAT_TESTNEXT) - newline (";;&"); - else - newline (";;"); - clauses = clauses->next; - } - indentation -= indentation_amount; -} - -static void -print_while_command (while_command) - WHILE_COM *while_command; -{ - print_until_or_while (while_command, "while"); -} - -static void -print_until_command (while_command) - WHILE_COM *while_command; -{ - print_until_or_while (while_command, "until"); -} - -static void -print_until_or_while (while_command, which) - WHILE_COM *while_command; - char *which; -{ - cprintf ("%s ", which); - skip_this_indent++; - make_command_string_internal (while_command->test); - PRINT_DEFERRED_HEREDOCS (""); - semicolon (); - cprintf (" do\n"); /* was newline ("do\n"); */ - indentation += indentation_amount; - make_command_string_internal (while_command->action); - PRINT_DEFERRED_HEREDOCS (""); - indentation -= indentation_amount; - semicolon (); - newline ("done"); -} - -static void -print_if_command (if_command) - IF_COM *if_command; -{ - cprintf ("if "); - skip_this_indent++; - make_command_string_internal (if_command->test); - semicolon (); - cprintf (" then\n"); - indentation += indentation_amount; - make_command_string_internal (if_command->true_case); - PRINT_DEFERRED_HEREDOCS (""); - indentation -= indentation_amount; - - if (if_command->false_case) - { - semicolon (); - newline ("else\n"); - indentation += indentation_amount; - make_command_string_internal (if_command->false_case); - PRINT_DEFERRED_HEREDOCS (""); - indentation -= indentation_amount; - } - semicolon (); - newline ("fi"); -} - -#if defined (DPAREN_ARITHMETIC) -void -print_arith_command (arith_cmd_list) - WORD_LIST *arith_cmd_list; -{ - cprintf ("(("); - command_print_word_list (arith_cmd_list, " "); - cprintf ("))"); -} -#endif - -#if defined (COND_COMMAND) -static void -print_cond_node (cond) - COND_COM *cond; -{ - if (cond->flags & CMD_INVERT_RETURN) - cprintf ("! "); - - if (cond->type == COND_EXPR) - { - cprintf ("( "); - print_cond_node (cond->left); - cprintf (" )"); - } - else if (cond->type == COND_AND) - { - print_cond_node (cond->left); - cprintf (" && "); - print_cond_node (cond->right); - } - else if (cond->type == COND_OR) - { - print_cond_node (cond->left); - cprintf (" || "); - print_cond_node (cond->right); - } - else if (cond->type == COND_UNARY) - { - cprintf ("%s", cond->op->word); - cprintf (" "); - print_cond_node (cond->left); - } - else if (cond->type == COND_BINARY) - { - print_cond_node (cond->left); - cprintf (" "); - cprintf ("%s", cond->op->word); - cprintf (" "); - print_cond_node (cond->right); - } - else if (cond->type == COND_TERM) - { - cprintf ("%s", cond->op->word); /* need to add quoting here */ - } -} - -void -print_cond_command (cond) - COND_COM *cond; -{ - cprintf ("[[ "); - print_cond_node (cond); - cprintf (" ]]"); -} - -#ifdef DEBUG -void -debug_print_cond_command (cond) - COND_COM *cond; -{ - fprintf (stderr, "DEBUG: "); - command_string_index = 0; - print_cond_command (cond); - fprintf (stderr, "%s\n", the_printed_command); -} -#endif - -void -xtrace_print_cond_term (type, invert, op, arg1, arg2) - int type, invert; - WORD_DESC *op; - char *arg1, *arg2; -{ - CHECK_XTRACE_FP; - command_string_index = 0; - fprintf (xtrace_fp, "%s", indirection_level_string ()); - fprintf (xtrace_fp, "[[ "); - if (invert) - fprintf (xtrace_fp, "! "); - - if (type == COND_UNARY) - { - fprintf (xtrace_fp, "%s ", op->word); - fprintf (xtrace_fp, "%s", (arg1 && *arg1) ? arg1 : "''"); - } - else if (type == COND_BINARY) - { - fprintf (xtrace_fp, "%s", (arg1 && *arg1) ? arg1 : "''"); - fprintf (xtrace_fp, " %s ", op->word); - fprintf (xtrace_fp, "%s", (arg2 && *arg2) ? arg2 : "''"); - } - - fprintf (xtrace_fp, " ]]\n"); - - fflush (xtrace_fp); -} -#endif /* COND_COMMAND */ - -#if defined (DPAREN_ARITHMETIC) || defined (ARITH_FOR_COMMAND) -/* A function to print the words of an arithmetic command when set -x is on. */ -void -xtrace_print_arith_cmd (list) - WORD_LIST *list; -{ - WORD_LIST *w; - - CHECK_XTRACE_FP; - fprintf (xtrace_fp, "%s", indirection_level_string ()); - fprintf (xtrace_fp, "(( "); - for (w = list; w; w = w->next) - fprintf (xtrace_fp, "%s%s", w->word->word, w->next ? " " : ""); - fprintf (xtrace_fp, " ))\n"); - - fflush (xtrace_fp); -} -#endif - -void -print_simple_command (simple_command) - SIMPLE_COM *simple_command; -{ - command_print_word_list (simple_command->words, " "); - - if (simple_command->redirects) - { - cprintf (" "); - print_redirection_list (simple_command->redirects); - } -} - -static void -print_heredocs (heredocs) - REDIRECT *heredocs; -{ - REDIRECT *hdtail; - - cprintf (" "); - for (hdtail = heredocs; hdtail; hdtail = hdtail->next) - { - print_redirection (hdtail); - cprintf ("\n"); - } - was_heredoc = 1; -} - -/* Print heredocs that are attached to the command before the connector - represented by CSTRING. The parsing semantics require us to print the - here-doc delimiters, then the connector (CSTRING), then the here-doc - bodies. We don't print the connector if it's a `;', but we use it to - note not to print an extra space after the last heredoc body and - newline. */ -static void -print_deferred_heredocs (cstring) - const char *cstring; -{ - REDIRECT *hdtail; - - for (hdtail = deferred_heredocs; hdtail; hdtail = hdtail->next) - { - cprintf (" "); - print_heredoc_header (hdtail); - } - if (cstring && cstring[0] && (cstring[0] != ';' || cstring[1])) - cprintf ("%s", cstring); - if (deferred_heredocs) - cprintf ("\n"); - for (hdtail = deferred_heredocs; hdtail; hdtail = hdtail->next) - { - print_heredoc_body (hdtail); - cprintf ("\n"); - } - if (deferred_heredocs) - { - if (cstring && cstring[0] && (cstring[0] != ';' || cstring[1])) - cprintf (" "); /* make sure there's at least one space */ - dispose_redirects (deferred_heredocs); - was_heredoc = 1; - } - deferred_heredocs = (REDIRECT *)NULL; -} - -static void -print_redirection_list (redirects) - REDIRECT *redirects; -{ - REDIRECT *heredocs, *hdtail, *newredir; - char *rw; - - heredocs = (REDIRECT *)NULL; - hdtail = heredocs; - - was_heredoc = 0; - while (redirects) - { - /* Defer printing the here documents until we've printed the - rest of the redirections. */ - if (redirects->instruction == r_reading_until || redirects->instruction == r_deblank_reading_until) - { - newredir = copy_redirect (redirects); - newredir->next = (REDIRECT *)NULL; - if (heredocs) - { - hdtail->next = newredir; - hdtail = newredir; - } - else - hdtail = heredocs = newredir; - } - else if (redirects->instruction == r_duplicating_output_word && (redirects->flags & REDIR_VARASSIGN) == 0 && redirects->redirector.dest == 1) - { - /* Temporarily translate it as the execution code does. */ - rw = redirects->redirectee.filename->word; - if (rw && *rw != '-' && DIGIT (*rw) == 0 && EXPCHAR (*rw) == 0) - redirects->instruction = r_err_and_out; - print_redirection (redirects); - redirects->instruction = r_duplicating_output_word; - } - else - print_redirection (redirects); - - redirects = redirects->next; - if (redirects) - cprintf (" "); - } - - /* Now that we've printed all the other redirections (on one line), - print the here documents. */ - if (heredocs && printing_connection) - deferred_heredocs = heredocs; - else if (heredocs) - { - print_heredocs (heredocs); - dispose_redirects (heredocs); - } -} - -static void -print_heredoc_header (redirect) - REDIRECT *redirect; -{ - int kill_leading; - char *x; - - kill_leading = redirect->instruction == r_deblank_reading_until; - - /* Here doc header */ - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}", redirect->redirector.filename->word); - else if (redirect->redirector.dest != 0) - cprintf ("%d", redirect->redirector.dest); - - /* If the here document delimiter is quoted, single-quote it. */ - if (redirect->redirectee.filename->flags & W_QUOTED) - { - x = sh_single_quote (redirect->here_doc_eof); - cprintf ("<<%s%s", kill_leading ? "-" : "", x); - free (x); - } - else - cprintf ("<<%s%s", kill_leading ? "-" : "", redirect->here_doc_eof); -} - -static void -print_heredoc_body (redirect) - REDIRECT *redirect; -{ - /* Here doc body */ - cprintf ("%s%s", redirect->redirectee.filename->word, redirect->here_doc_eof); -} - -static void -print_redirection (redirect) - REDIRECT *redirect; -{ - int redirector, redir_fd; - WORD_DESC *redirectee, *redir_word; - - redirectee = redirect->redirectee.filename; - redir_fd = redirect->redirectee.dest; - - redir_word = redirect->redirector.filename; - redirector = redirect->redirector.dest; - - switch (redirect->instruction) - { - case r_input_direction: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}", redir_word->word); - else if (redirector != 0) - cprintf ("%d", redirector); - cprintf ("< %s", redirectee->word); - break; - - case r_output_direction: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}", redir_word->word); - else if (redirector != 1) - cprintf ("%d", redirector); - cprintf ("> %s", redirectee->word); - break; - - case r_inputa_direction: /* Redirection created by the shell. */ - cprintf ("&"); - break; - - case r_output_force: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}", redir_word->word); - else if (redirector != 1) - cprintf ("%d", redirector); - cprintf (">|%s", redirectee->word); - break; - - case r_appending_to: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}", redir_word->word); - else if (redirector != 1) - cprintf ("%d", redirector); - cprintf (">> %s", redirectee->word); - break; - - case r_input_output: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}", redir_word->word); - else if (redirector != 1) - cprintf ("%d", redirector); - cprintf ("<> %s", redirectee->word); - break; - - case r_deblank_reading_until: - case r_reading_until: - print_heredoc_header (redirect); - cprintf ("\n"); - print_heredoc_body (redirect); - break; - - case r_reading_string: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}", redir_word->word); - else if (redirector != 0) - cprintf ("%d", redirector); -#if 0 - /* Don't need to check whether or not to requote, since original quotes - are still intact. The only thing that has happened is that $'...' - has been replaced with 'expanded ...'. */ - if (ansic_shouldquote (redirect->redirectee.filename->word)) - { - char *x; - x = ansic_quote (redirect->redirectee.filename->word, 0, (int *)0); - cprintf ("<<< %s", x); - free (x); - } - else -#endif - cprintf ("<<< %s", redirect->redirectee.filename->word); - break; - - case r_duplicating_input: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}<&%d", redir_word->word, redir_fd); - else - cprintf ("%d<&%d", redirector, redir_fd); - break; - - case r_duplicating_output: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}>&%d", redir_word->word, redir_fd); - else - cprintf ("%d>&%d", redirector, redir_fd); - break; - - case r_duplicating_input_word: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}<&%s", redir_word->word, redirectee->word); - else - cprintf ("%d<&%s", redirector, redirectee->word); - break; - - case r_duplicating_output_word: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}>&%s", redir_word->word, redirectee->word); - else - cprintf ("%d>&%s", redirector, redirectee->word); - break; - - case r_move_input: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}<&%d-", redir_word->word, redir_fd); - else - cprintf ("%d<&%d-", redirector, redir_fd); - break; - - case r_move_output: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}>&%d-", redir_word->word, redir_fd); - else - cprintf ("%d>&%d-", redirector, redir_fd); - break; - - case r_move_input_word: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}<&%s-", redir_word->word, redirectee->word); - else - cprintf ("%d<&%s-", redirector, redirectee->word); - break; - - case r_move_output_word: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}>&%s-", redir_word->word, redirectee->word); - else - cprintf ("%d>&%s-", redirector, redirectee->word); - break; - - case r_close_this: - if (redirect->rflags & REDIR_VARASSIGN) - cprintf ("{%s}>&-", redir_word->word); - else - cprintf ("%d>&-", redirector); - break; - - case r_err_and_out: - cprintf ("&>%s", redirectee->word); - break; - - case r_append_err_and_out: - cprintf ("&>>%s", redirectee->word); - break; - } -} - -static void -reset_locals () -{ - inside_function_def = 0; - indentation = 0; - printing_connection = 0; - deferred_heredocs = 0; -} - -static void -print_function_def (func) - FUNCTION_DEF *func; -{ - COMMAND *cmdcopy; - REDIRECT *func_redirects; - - func_redirects = NULL; - cprintf ("function %s () \n", func->name->word); - add_unwind_protect (reset_locals, 0); - - indent (indentation); - cprintf ("{ \n"); - - inside_function_def++; - indentation += indentation_amount; - - cmdcopy = copy_command (func->command); - if (cmdcopy->type == cm_group) - { - func_redirects = cmdcopy->redirects; - cmdcopy->redirects = (REDIRECT *)NULL; - } - make_command_string_internal (cmdcopy->type == cm_group - ? cmdcopy->value.Group->command - : cmdcopy); - /* XXX - PRINT_DEFERRED_HEREDOCS (""); ? */ - - remove_unwind_protect (); - indentation -= indentation_amount; - inside_function_def--; - - if (func_redirects) - { /* { */ - newline ("} "); - print_redirection_list (func_redirects); - cmdcopy->redirects = func_redirects; - } - else - newline ("}"); - - dispose_command (cmdcopy); -} - -/* Return the string representation of the named function. - NAME is the name of the function. - COMMAND is the function body. It should be a GROUP_COM. - flags&FUNC_MULTILINE is non-zero to pretty-print, or zero for all on one line. - flags&FUNC_EXTERNAL means convert from internal to external form - */ -char * -named_function_string (name, command, flags) - char *name; - COMMAND *command; - int flags; -{ - char *result; - int old_indent, old_amount; - COMMAND *cmdcopy; - REDIRECT *func_redirects; - - old_indent = indentation; - old_amount = indentation_amount; - command_string_index = was_heredoc = 0; - deferred_heredocs = 0; - - if (name && *name) - cprintf ("%s ", name); - - cprintf ("() "); - - if ((flags & FUNC_MULTILINE) == 0) - { - indentation = 1; - indentation_amount = 0; - } - else - { - cprintf ("\n"); - indentation += indentation_amount; - } - - inside_function_def++; - - cprintf ((flags & FUNC_MULTILINE) ? "{ \n" : "{ "); - - cmdcopy = copy_command (command); - /* Take any redirections specified in the function definition (which should - apply to the function as a whole) and save them for printing later. */ - func_redirects = (REDIRECT *)NULL; - if (cmdcopy->type == cm_group) - { - func_redirects = cmdcopy->redirects; - cmdcopy->redirects = (REDIRECT *)NULL; - } - make_command_string_internal (cmdcopy->type == cm_group - ? cmdcopy->value.Group->command - : cmdcopy); - /* XXX - PRINT_DEFERRED_HEREDOCS (""); ? */ - - indentation = old_indent; - indentation_amount = old_amount; - inside_function_def--; - - if (func_redirects) - { /* { */ - newline ("} "); - print_redirection_list (func_redirects); - cmdcopy->redirects = func_redirects; - } - else - newline ("}"); - - result = the_printed_command; - - if ((flags & FUNC_MULTILINE) == 0) - { -#if 0 - register int i; - for (i = 0; result[i]; i++) - if (result[i] == '\n') - { - strcpy (result + i, result + i + 1); - --i; - } -#else - if (result[2] == '\n') /* XXX -- experimental */ - memmove (result + 2, result + 3, strlen (result) - 2); - -#endif - } - - dispose_command (cmdcopy); - - if (flags & FUNC_EXTERNAL) - result = remove_quoted_escapes (result); - - return (result); -} - -static void -newline (string) - char *string; -{ - cprintf ("\n"); - indent (indentation); - if (string && *string) - cprintf ("%s", string); -} - -static char *indentation_string; -static int indentation_size; - -static void -indent (amount) - int amount; -{ - register int i; - - RESIZE_MALLOCED_BUFFER (indentation_string, 0, amount, indentation_size, 16); - - for (i = 0; amount > 0; amount--) - indentation_string[i++] = ' '; - indentation_string[i] = '\0'; - cprintf (indentation_string); -} - -static void -semicolon () -{ - if (command_string_index > 0 && - (the_printed_command[command_string_index - 1] == '&' || - the_printed_command[command_string_index - 1] == '\n')) - return; - cprintf (";"); -} - -/* How to make the string. */ -static void -#if defined (PREFER_STDARG) -cprintf (const char *control, ...) -#else -cprintf (control, va_alist) - const char *control; - va_dcl -#endif -{ - register const char *s; - char char_arg[2], *argp, intbuf[INT_STRLEN_BOUND (int) + 1]; - int digit_arg, arg_len, c; - va_list args; - - SH_VA_START (args, control); - - arg_len = strlen (control); - the_printed_command_resize (arg_len + 1); - - char_arg[1] = '\0'; - s = control; - while (s && *s) - { - c = *s++; - argp = (char *)NULL; - if (c != '%' || !*s) - { - char_arg[0] = c; - argp = char_arg; - arg_len = 1; - } - else - { - c = *s++; - switch (c) - { - case '%': - char_arg[0] = c; - argp = char_arg; - arg_len = 1; - break; - - case 's': - argp = va_arg (args, char *); - arg_len = strlen (argp); - break; - - case 'd': - /* Represent an out-of-range file descriptor with an out-of-range - integer value. We can do this because the only use of `%d' in - the calls to cprintf is to output a file descriptor number for - a redirection. */ - digit_arg = va_arg (args, int); - if (digit_arg < 0) - { - sprintf (intbuf, "%u", (unsigned)-1); - argp = intbuf; - } - else - argp = inttostr (digit_arg, intbuf, sizeof (intbuf)); - arg_len = strlen (argp); - break; - - case 'c': - char_arg[0] = va_arg (args, int); - argp = char_arg; - arg_len = 1; - break; - - default: - programming_error (_("cprintf: `%c': invalid format character"), c); - /*NOTREACHED*/ - } - } - - if (argp && arg_len) - { - the_printed_command_resize (arg_len + 1); - FASTCOPY (argp, the_printed_command + command_string_index, arg_len); - command_string_index += arg_len; - } - } - - va_end (args); - - the_printed_command[command_string_index] = '\0'; -} - -/* Ensure that there is enough space to stuff LENGTH characters into - THE_PRINTED_COMMAND. */ -static void -the_printed_command_resize (length) - int length; -{ - if (the_printed_command == 0) - { - the_printed_command_size = (length + PRINTED_COMMAND_INITIAL_SIZE - 1) & ~(PRINTED_COMMAND_INITIAL_SIZE - 1); - the_printed_command = (char *)xmalloc (the_printed_command_size); - command_string_index = 0; - } - else if ((command_string_index + length) >= the_printed_command_size) - { - int new; - new = command_string_index + length + 1; - - /* Round up to the next multiple of PRINTED_COMMAND_GROW_SIZE. */ - new = (new + PRINTED_COMMAND_GROW_SIZE - 1) & ~(PRINTED_COMMAND_GROW_SIZE - 1); - the_printed_command_size = new; - - the_printed_command = (char *)xrealloc (the_printed_command, the_printed_command_size); - } -} - -#if defined (HAVE_VPRINTF) -/* ``If vprintf is available, you may assume that vfprintf and vsprintf are - also available.'' */ - -static void -#if defined (PREFER_STDARG) -xprintf (const char *format, ...) -#else -xprintf (format, va_alist) - const char *format; - va_dcl -#endif -{ - va_list args; - - SH_VA_START (args, format); - - vfprintf (stdout, format, args); - va_end (args); -} - -#else - -static void -xprintf (format, arg1, arg2, arg3, arg4, arg5) - const char *format; -{ - printf (format, arg1, arg2, arg3, arg4, arg5); -} - -#endif /* !HAVE_VPRINTF */ diff --git a/redir.c~ b/redir.c~ deleted file mode 100644 index 8b61a71ac..000000000 --- a/redir.c~ +++ /dev/null @@ -1,1322 +0,0 @@ -/* redir.c -- Functions to perform input and output redirection. */ - -/* Copyright (C) 1997-2009 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#include "config.h" - -#if !defined (__GNUC__) && !defined (HAVE_ALLOCA_H) && defined (_AIX) - #pragma alloca -#endif /* _AIX && RISC6000 && !__GNUC__ */ - -#include -#include "bashtypes.h" -#if !defined (_MINIX) && defined (HAVE_SYS_FILE_H) -# include -#endif -#include "filecntl.h" -#include "posixstat.h" - -#if defined (HAVE_UNISTD_H) -# include -#endif - -#include - -#if !defined (errno) -extern int errno; -#endif - -#include "bashansi.h" -#include "bashintl.h" -#include "memalloc.h" - -#define NEED_FPURGE_DECL - -#include "shell.h" -#include "flags.h" -#include "execute_cmd.h" -#include "redir.h" - -#if defined (BUFFERED_INPUT) -# include "input.h" -#endif - -#define SHELL_FD_BASE 10 - -int expanding_redir; - -extern int posixly_correct; -extern int last_command_exit_value; -extern REDIRECT *redirection_undo_list; -extern REDIRECT *exec_redirection_undo_list; - -/* Static functions defined and used in this file. */ -static void add_exec_redirect __P((REDIRECT *)); -static int add_undo_redirect __P((int, enum r_instruction, int)); -static int add_undo_close_redirect __P((int)); -static int expandable_redirection_filename __P((REDIRECT *)); -static int stdin_redirection __P((enum r_instruction, int)); -static int undoablefd __P((int)); -static int do_redirection_internal __P((REDIRECT *, int)); - -static int write_here_document __P((int, WORD_DESC *)); -static int write_here_string __P((int, WORD_DESC *)); -static int here_document_to_fd __P((WORD_DESC *, enum r_instruction)); - -static int redir_special_open __P((int, char *, int, int, enum r_instruction)); -static int noclobber_open __P((char *, int, int, enum r_instruction)); -static int redir_open __P((char *, int, int, enum r_instruction)); - -static int redir_varassign __P((REDIRECT *, int)); -static int redir_varvalue __P((REDIRECT *)); - -/* Spare redirector used when translating [N]>&WORD[-] or [N]<&WORD[-] to - a new redirection and when creating the redirection undo list. */ -static REDIRECTEE rd; - -/* Set to errno when a here document cannot be created for some reason. - Used to print a reasonable error message. */ -static int heredoc_errno; - -#define REDIRECTION_ERROR(r, e, fd) \ -do { \ - if ((r) < 0) \ - { \ - if (fd >= 0) \ - close (fd); \ - last_command_exit_value = EXECUTION_FAILURE;\ - return ((e) == 0 ? EINVAL : (e));\ - } \ -} while (0) - -void -redirection_error (temp, error) - REDIRECT *temp; - int error; -{ - char *filename, *allocname; - int oflags; - - allocname = 0; - if (temp->rflags & REDIR_VARASSIGN) - filename = allocname = savestring (temp->redirector.filename->word); - else if (temp->redirector.dest < 0) - /* This can happen when read_token_word encounters overflow, like in - exec 4294967297>x */ - filename = _("file descriptor out of range"); -#ifdef EBADF - /* This error can never involve NOCLOBBER */ - else if (error != NOCLOBBER_REDIRECT && temp->redirector.dest >= 0 && error == EBADF) - { - /* If we're dealing with two file descriptors, we have to guess about - which one is invalid; in the cases of r_{duplicating,move}_input and - r_{duplicating,move}_output we're here because dup2() failed. */ - switch (temp->instruction) - { - case r_duplicating_input: - case r_duplicating_output: - case r_move_input: - case r_move_output: - filename = allocname = itos (temp->redirectee.dest); - break; - case r_duplicating_input_word: - if (temp->redirector.dest == 0) /* Guess */ - filename = temp->redirectee.filename->word; /* XXX */ - else - filename = allocname = itos (temp->redirector.dest); - break; - case r_duplicating_output_word: - if (temp->redirector.dest == 1) /* Guess */ - filename = temp->redirectee.filename->word; /* XXX */ - else - filename = allocname = itos (temp->redirector.dest); - break; - default: - filename = allocname = itos (temp->redirector.dest); - break; - } - } -#endif - else if (expandable_redirection_filename (temp)) - { -expandable_filename: - if (posixly_correct && interactive_shell == 0) - { - oflags = temp->redirectee.filename->flags; - temp->redirectee.filename->flags |= W_NOGLOB; - } - filename = allocname = redirection_expand (temp->redirectee.filename); - if (posixly_correct && interactive_shell == 0) - temp->redirectee.filename->flags = oflags; - if (filename == 0) - filename = temp->redirectee.filename->word; - } - else if (temp->redirectee.dest < 0) - filename = "file descriptor out of range"; - else - filename = allocname = itos (temp->redirectee.dest); - - switch (error) - { - case AMBIGUOUS_REDIRECT: - internal_error (_("%s: ambiguous redirect"), filename); - break; - - case NOCLOBBER_REDIRECT: - internal_error (_("%s: cannot overwrite existing file"), filename); - break; - -#if defined (RESTRICTED_SHELL) - case RESTRICTED_REDIRECT: - internal_error (_("%s: restricted: cannot redirect output"), filename); - break; -#endif /* RESTRICTED_SHELL */ - - case HEREDOC_REDIRECT: - internal_error (_("cannot create temp file for here-document: %s"), strerror (heredoc_errno)); - break; - - case BADVAR_REDIRECT: - internal_error (_("%s: cannot assign fd to variable"), filename); - break; - - default: - internal_error ("%s: %s", filename, strerror (error)); - break; - } - - FREE (allocname); -} - -/* Perform the redirections on LIST. If flags & RX_ACTIVE, then actually - make input and output file descriptors, otherwise just do whatever is - neccessary for side effecting. flags & RX_UNDOABLE says to remember - how to undo the redirections later, if non-zero. If flags & RX_CLEXEC - is non-zero, file descriptors opened in do_redirection () have their - close-on-exec flag set. */ -int -do_redirections (list, flags) - REDIRECT *list; - int flags; -{ - int error; - REDIRECT *temp; - - if (flags & RX_UNDOABLE) - { - if (redirection_undo_list) - { - dispose_redirects (redirection_undo_list); - redirection_undo_list = (REDIRECT *)NULL; - } - if (exec_redirection_undo_list) - dispose_exec_redirects (); - } - - for (temp = list; temp; temp = temp->next) - { - error = do_redirection_internal (temp, flags); - if (error) - { - redirection_error (temp, error); - return (error); - } - } - return (0); -} - -/* Return non-zero if the redirection pointed to by REDIRECT has a - redirectee.filename that can be expanded. */ -static int -expandable_redirection_filename (redirect) - REDIRECT *redirect; -{ - switch (redirect->instruction) - { - case r_output_direction: - case r_appending_to: - case r_input_direction: - case r_inputa_direction: - case r_err_and_out: - case r_append_err_and_out: - case r_input_output: - case r_output_force: - case r_duplicating_input_word: - case r_duplicating_output_word: - case r_move_input_word: - case r_move_output_word: - return 1; - - default: - return 0; - } -} - -/* Expand the word in WORD returning a string. If WORD expands to - multiple words (or no words), then return NULL. */ -char * -redirection_expand (word) - WORD_DESC *word; -{ - char *result; - WORD_LIST *tlist1, *tlist2; - WORD_DESC *w; - - w = copy_word (word); - if (posixly_correct) - w->flags |= W_NOSPLIT; - - tlist1 = make_word_list (w, (WORD_LIST *)NULL); - expanding_redir = 1; - tlist2 = expand_words_no_vars (tlist1); - expanding_redir = 0; - dispose_words (tlist1); - - if (!tlist2 || tlist2->next) - { - /* We expanded to no words, or to more than a single word. - Dispose of the word list and return NULL. */ - if (tlist2) - dispose_words (tlist2); - return ((char *)NULL); - } - result = string_list (tlist2); /* XXX savestring (tlist2->word->word)? */ - dispose_words (tlist2); - return (result); -} - -static int -write_here_string (fd, redirectee) - int fd; - WORD_DESC *redirectee; -{ - char *herestr; - int herelen, n, e; - - expanding_redir = 1; - herestr = expand_string_to_string (redirectee->word, 0); - expanding_redir = 0; - herelen = STRLEN (herestr); - - n = write (fd, herestr, herelen); - if (n == herelen) - { - n = write (fd, "\n", 1); - herelen = 1; - } - e = errno; - FREE (herestr); - if (n != herelen) - { - if (e == 0) - e = ENOSPC; - return e; - } - return 0; -} - -/* Write the text of the here document pointed to by REDIRECTEE to the file - descriptor FD, which is already open to a temp file. Return 0 if the - write is successful, otherwise return errno. */ -static int -write_here_document (fd, redirectee) - int fd; - WORD_DESC *redirectee; -{ - char *document; - int document_len, fd2; - FILE *fp; - register WORD_LIST *t, *tlist; - - /* Expand the text if the word that was specified had - no quoting. The text that we expand is treated - exactly as if it were surrounded by double quotes. */ - - if (redirectee->flags & W_QUOTED) - { - document = redirectee->word; - document_len = strlen (document); - /* Set errno to something reasonable if the write fails. */ - if (write (fd, document, document_len) < document_len) - { - if (errno == 0) - errno = ENOSPC; - return (errno); - } - else - return 0; - } - - expanding_redir = 1; - tlist = expand_string (redirectee->word, Q_HERE_DOCUMENT); - expanding_redir = 0; - - if (tlist) - { - /* Try using buffered I/O (stdio) and writing a word - at a time, letting stdio do the work of buffering - for us rather than managing our own strings. Most - stdios are not particularly fast, however -- this - may need to be reconsidered later. */ - if ((fd2 = dup (fd)) < 0 || (fp = fdopen (fd2, "w")) == NULL) - { - if (fd2 >= 0) - close (fd2); - return (errno); - } - errno = 0; - for (t = tlist; t; t = t->next) - { - /* This is essentially the body of - string_list_internal expanded inline. */ - document = t->word->word; - document_len = strlen (document); - if (t != tlist) - putc (' ', fp); /* separator */ - fwrite (document, document_len, 1, fp); - if (ferror (fp)) - { - if (errno == 0) - errno = ENOSPC; - fd2 = errno; - fclose(fp); - dispose_words (tlist); - return (fd2); - } - } - dispose_words (tlist); - if (fclose (fp) != 0) - { - if (errno == 0) - errno = ENOSPC; - return (errno); - } - } - return 0; -} - -/* Create a temporary file holding the text of the here document pointed to - by REDIRECTEE, and return a file descriptor open for reading to the temp - file. Return -1 on any error, and make sure errno is set appropriately. */ -static int -here_document_to_fd (redirectee, ri) - WORD_DESC *redirectee; - enum r_instruction ri; -{ - char *filename; - int r, fd, fd2; - - fd = sh_mktmpfd ("sh-thd", MT_USERANDOM|MT_USETMPDIR, &filename); - - /* If we failed for some reason other than the file existing, abort */ - if (fd < 0) - { - FREE (filename); - return (fd); - } - - errno = r = 0; /* XXX */ - /* write_here_document returns 0 on success, errno on failure. */ - if (redirectee->word) - r = (ri != r_reading_string) ? write_here_document (fd, redirectee) - : write_here_string (fd, redirectee); - - if (r) - { - close (fd); - unlink (filename); - free (filename); - errno = r; - return (-1); - } - - /* In an attempt to avoid races, we close the first fd only after opening - the second. */ - /* Make the document really temporary. Also make it the input. */ - fd2 = open (filename, O_RDONLY|O_BINARY, 0600); - - if (fd2 < 0) - { - r = errno; - unlink (filename); - free (filename); - close (fd); - errno = r; - return -1; - } - - close (fd); - if (unlink (filename) < 0) - { - r = errno; - close (fd2); - free (filename); - errno = r; - return (-1); - } - - free (filename); - return (fd2); -} - -#define RF_DEVFD 1 -#define RF_DEVSTDERR 2 -#define RF_DEVSTDIN 3 -#define RF_DEVSTDOUT 4 -#define RF_DEVTCP 5 -#define RF_DEVUDP 6 - -/* A list of pattern/value pairs for filenames that the redirection - code handles specially. */ -static STRING_INT_ALIST _redir_special_filenames[] = { -#if !defined (HAVE_DEV_FD) - { "/dev/fd/[0-9]*", RF_DEVFD }, -#endif -#if !defined (HAVE_DEV_STDIN) - { "/dev/stderr", RF_DEVSTDERR }, - { "/dev/stdin", RF_DEVSTDIN }, - { "/dev/stdout", RF_DEVSTDOUT }, -#endif -#if defined (NETWORK_REDIRECTIONS) - { "/dev/tcp/*/*", RF_DEVTCP }, - { "/dev/udp/*/*", RF_DEVUDP }, -#endif - { (char *)NULL, -1 } -}; - -static int -redir_special_open (spec, filename, flags, mode, ri) - int spec; - char *filename; - int flags, mode; - enum r_instruction ri; -{ - int fd; -#if !defined (HAVE_DEV_FD) - intmax_t lfd; -#endif - - fd = -1; - switch (spec) - { -#if !defined (HAVE_DEV_FD) - case RF_DEVFD: - if (all_digits (filename+8) && legal_number (filename+8, &lfd) && lfd == (int)lfd) - { - fd = lfd; - fd = fcntl (fd, F_DUPFD, SHELL_FD_BASE); - } - else - fd = AMBIGUOUS_REDIRECT; - break; -#endif - -#if !defined (HAVE_DEV_STDIN) - case RF_DEVSTDIN: - fd = fcntl (0, F_DUPFD, SHELL_FD_BASE); - break; - case RF_DEVSTDOUT: - fd = fcntl (1, F_DUPFD, SHELL_FD_BASE); - break; - case RF_DEVSTDERR: - fd = fcntl (2, F_DUPFD, SHELL_FD_BASE); - break; -#endif - -#if defined (NETWORK_REDIRECTIONS) - case RF_DEVTCP: - case RF_DEVUDP: -#if defined (HAVE_NETWORK) - fd = netopen (filename); -#else - internal_warning (_("/dev/(tcp|udp)/host/port not supported without networking")); - fd = open (filename, flags, mode); -#endif - break; -#endif /* NETWORK_REDIRECTIONS */ - } - - return fd; -} - -/* Open FILENAME with FLAGS in noclobber mode, hopefully avoiding most - race conditions and avoiding the problem where the file is replaced - between the stat(2) and open(2). */ -static int -noclobber_open (filename, flags, mode, ri) - char *filename; - int flags, mode; - enum r_instruction ri; -{ - int r, fd; - struct stat finfo, finfo2; - - /* If the file exists and is a regular file, return an error - immediately. */ - r = stat (filename, &finfo); - if (r == 0 && (S_ISREG (finfo.st_mode))) - return (NOCLOBBER_REDIRECT); - - /* If the file was not present (r != 0), make sure we open it - exclusively so that if it is created before we open it, our open - will fail. Make sure that we do not truncate an existing file. - Note that we don't turn on O_EXCL unless the stat failed -- if - the file was not a regular file, we leave O_EXCL off. */ - flags &= ~O_TRUNC; - if (r != 0) - { - fd = open (filename, flags|O_EXCL, mode); - return ((fd < 0 && errno == EEXIST) ? NOCLOBBER_REDIRECT : fd); - } - fd = open (filename, flags, mode); - - /* If the open failed, return the file descriptor right away. */ - if (fd < 0) - return (errno == EEXIST ? NOCLOBBER_REDIRECT : fd); - - /* OK, the open succeeded, but the file may have been changed from a - non-regular file to a regular file between the stat and the open. - We are assuming that the O_EXCL open handles the case where FILENAME - did not exist and is symlinked to an existing file between the stat - and open. */ - - /* If we can open it and fstat the file descriptor, and neither check - revealed that it was a regular file, and the file has not been replaced, - return the file descriptor. */ - if ((fstat (fd, &finfo2) == 0) && (S_ISREG (finfo2.st_mode) == 0) && - r == 0 && (S_ISREG (finfo.st_mode) == 0) && - same_file (filename, filename, &finfo, &finfo2)) - return fd; - - /* The file has been replaced. badness. */ - close (fd); - errno = EEXIST; - return (NOCLOBBER_REDIRECT); -} - -static int -redir_open (filename, flags, mode, ri) - char *filename; - int flags, mode; - enum r_instruction ri; -{ - int fd, r; - - r = find_string_in_alist (filename, _redir_special_filenames, 1); - if (r >= 0) - return (redir_special_open (r, filename, flags, mode, ri)); - - /* If we are in noclobber mode, you are not allowed to overwrite - existing files. Check before opening. */ - if (noclobber && CLOBBERING_REDIRECT (ri)) - { - fd = noclobber_open (filename, flags, mode, ri); - if (fd == NOCLOBBER_REDIRECT) - return (NOCLOBBER_REDIRECT); - } - else - { - fd = open (filename, flags, mode); -#if defined (AFS) - if ((fd < 0) && (errno == EACCES)) - { - fd = open (filename, flags & ~O_CREAT, mode); - errno = EACCES; /* restore errno */ - } -#endif /* AFS */ - } - - return fd; -} - -static int -undoablefd (fd) - int fd; -{ - int clexec; - - clexec = fcntl (fd, F_GETFD, 0); - if (clexec == -1 || (fd >= SHELL_FD_BASE && clexec == 1)) - return 0; - return 1; -} - -/* Do the specific redirection requested. Returns errno or one of the - special redirection errors (*_REDIRECT) in case of error, 0 on success. - If flags & RX_ACTIVE is zero, then just do whatever is neccessary to - produce the appropriate side effects. flags & RX_UNDOABLE, if non-zero, - says to remember how to undo each redirection. If flags & RX_CLEXEC is - non-zero, then we set all file descriptors > 2 that we open to be - close-on-exec. */ -static int -do_redirection_internal (redirect, flags) - REDIRECT *redirect; - int flags; -{ - WORD_DESC *redirectee; - int redir_fd, fd, redirector, r, oflags; - intmax_t lfd; - char *redirectee_word; - enum r_instruction ri; - REDIRECT *new_redirect; - REDIRECTEE sd; - - redirectee = redirect->redirectee.filename; - redir_fd = redirect->redirectee.dest; - redirector = redirect->redirector.dest; - ri = redirect->instruction; - - if (redirect->flags & RX_INTERNAL) - flags |= RX_INTERNAL; - - if (TRANSLATE_REDIRECT (ri)) - { - /* We have [N]>&WORD[-] or [N]<&WORD[-] (or {V}>&WORD[-] or {V}<&WORD-). - and WORD, then translate the redirection into a new one and - continue. */ - redirectee_word = redirection_expand (redirectee); - - /* XXX - what to do with [N]<&$w- where w is unset or null? ksh93 - closes N. */ - if (redirectee_word == 0) - return (AMBIGUOUS_REDIRECT); - else if (redirectee_word[0] == '-' && redirectee_word[1] == '\0') - { - sd = redirect->redirector; - rd.dest = 0; - new_redirect = make_redirection (sd, r_close_this, rd, 0); - } - else if (all_digits (redirectee_word)) - { - sd = redirect->redirector; - if (legal_number (redirectee_word, &lfd) && (int)lfd == lfd) - rd.dest = lfd; - else - rd.dest = -1; /* XXX */ - switch (ri) - { - case r_duplicating_input_word: - new_redirect = make_redirection (sd, r_duplicating_input, rd, 0); - break; - case r_duplicating_output_word: - new_redirect = make_redirection (sd, r_duplicating_output, rd, 0); - break; - case r_move_input_word: - new_redirect = make_redirection (sd, r_move_input, rd, 0); - break; - case r_move_output_word: - new_redirect = make_redirection (sd, r_move_output, rd, 0); - break; - } - } - else if (ri == r_duplicating_output_word && (redirect->rflags & REDIR_VARASSIGN) == 0 && redirector == 1) - { - sd = redirect->redirector; - rd.filename = make_bare_word (redirectee_word); - new_redirect = make_redirection (sd, r_err_and_out, rd, 0); - } - else - { - free (redirectee_word); - return (AMBIGUOUS_REDIRECT); - } - - free (redirectee_word); - - /* Set up the variables needed by the rest of the function from the - new redirection. */ - if (new_redirect->instruction == r_err_and_out) - { - char *alloca_hack; - - /* Copy the word without allocating any memory that must be - explicitly freed. */ - redirectee = (WORD_DESC *)alloca (sizeof (WORD_DESC)); - xbcopy ((char *)new_redirect->redirectee.filename, - (char *)redirectee, sizeof (WORD_DESC)); - - alloca_hack = (char *) - alloca (1 + strlen (new_redirect->redirectee.filename->word)); - redirectee->word = alloca_hack; - strcpy (redirectee->word, new_redirect->redirectee.filename->word); - } - else - /* It's guaranteed to be an integer, and shouldn't be freed. */ - redirectee = new_redirect->redirectee.filename; - - redir_fd = new_redirect->redirectee.dest; - redirector = new_redirect->redirector.dest; - ri = new_redirect->instruction; - - /* Overwrite the flags element of the old redirect with the new value. */ - redirect->flags = new_redirect->flags; - dispose_redirects (new_redirect); - } - - switch (ri) - { - case r_output_direction: - case r_appending_to: - case r_input_direction: - case r_inputa_direction: - case r_err_and_out: /* command &>filename */ - case r_append_err_and_out: /* command &>> filename */ - case r_input_output: - case r_output_force: - if (posixly_correct && interactive_shell == 0) - { - oflags = redirectee->flags; - redirectee->flags |= W_NOGLOB; - } - redirectee_word = redirection_expand (redirectee); - if (posixly_correct && interactive_shell == 0) - redirectee->flags = oflags; - - if (redirectee_word == 0) - return (AMBIGUOUS_REDIRECT); - -#if defined (RESTRICTED_SHELL) - if (restricted && (WRITE_REDIRECT (ri))) - { - free (redirectee_word); - return (RESTRICTED_REDIRECT); - } -#endif /* RESTRICTED_SHELL */ - - fd = redir_open (redirectee_word, redirect->flags, 0666, ri); - free (redirectee_word); - - if (fd == NOCLOBBER_REDIRECT) - return (fd); - - if (fd < 0) - return (errno); - - if (flags & RX_ACTIVE) - { - if (redirect->rflags & REDIR_VARASSIGN) - { - redirector = fcntl (fd, F_DUPFD, SHELL_FD_BASE); /* XXX try this for now */ - r = errno; - if (redirector < 0) - sys_error (_("redirection error: cannot duplicate fd")); - REDIRECTION_ERROR (redirector, r, fd); - } - - if (flags & RX_UNDOABLE) - { - /* Only setup to undo it if the thing to undo is active. */ - if ((fd != redirector) && (fcntl (redirector, F_GETFD, 0) != -1)) - r = add_undo_redirect (redirector, ri, -1); - else - r = add_undo_close_redirect (redirector); - if (r < 0 && (redirect->rflags & REDIR_VARASSIGN)) - close (redirector); - REDIRECTION_ERROR (r, errno, fd); - } - -#if defined (BUFFERED_INPUT) - check_bash_input (redirector); -#endif - - /* Make sure there is no pending output before we change the state - of the underlying file descriptor, since the builtins use stdio - for output. */ - if (redirector == 1 && fileno (stdout) == redirector) - { - fflush (stdout); - fpurge (stdout); - } - else if (redirector == 2 && fileno (stderr) == redirector) - { - fflush (stderr); - fpurge (stderr); - } - - if (redirect->rflags & REDIR_VARASSIGN) - { - if ((r = redir_varassign (redirect, redirector)) < 0) - { - close (redirector); - close (fd); - return (r); /* XXX */ - } - } - else if ((fd != redirector) && (dup2 (fd, redirector) < 0)) - return (errno); - -#if defined (BUFFERED_INPUT) - /* Do not change the buffered stream for an implicit redirection - of /dev/null to fd 0 for asynchronous commands without job - control (r_inputa_direction). */ - if (ri == r_input_direction || ri == r_input_output) - duplicate_buffered_stream (fd, redirector); -#endif /* BUFFERED_INPUT */ - - /* - * If we're remembering, then this is the result of a while, for - * or until loop with a loop redirection, or a function/builtin - * executing in the parent shell with a redirection. In the - * function/builtin case, we want to set all file descriptors > 2 - * to be close-on-exec to duplicate the effect of the old - * for i = 3 to NOFILE close(i) loop. In the case of the loops, - * both sh and ksh leave the file descriptors open across execs. - * The Posix standard mentions only the exec builtin. - */ - if ((flags & RX_CLEXEC) && (redirector > 2)) - SET_CLOSE_ON_EXEC (redirector); - } - - if (fd != redirector) - { -#if defined (BUFFERED_INPUT) - if (INPUT_REDIRECT (ri)) - close_buffered_fd (fd); - else -#endif /* !BUFFERED_INPUT */ - close (fd); /* Don't close what we just opened! */ - } - - /* If we are hacking both stdout and stderr, do the stderr - redirection here. XXX - handle {var} here? */ - if (ri == r_err_and_out || ri == r_append_err_and_out) - { - if (flags & RX_ACTIVE) - { - if (flags & RX_UNDOABLE) - add_undo_redirect (2, ri, -1); - if (dup2 (1, 2) < 0) - return (errno); - } - } - break; - - case r_reading_until: - case r_deblank_reading_until: - case r_reading_string: - /* REDIRECTEE is a pointer to a WORD_DESC containing the text of - the new input. Place it in a temporary file. */ - if (redirectee) - { - fd = here_document_to_fd (redirectee, ri); - - if (fd < 0) - { - heredoc_errno = errno; - return (HEREDOC_REDIRECT); - } - - if (redirect->rflags & REDIR_VARASSIGN) - { - redirector = fcntl (fd, F_DUPFD, SHELL_FD_BASE); /* XXX try this for now */ - r = errno; - if (redirector < 0) - sys_error (_("redirection error: cannot duplicate fd")); - REDIRECTION_ERROR (redirector, r, fd); - } - - if (flags & RX_ACTIVE) - { - if (flags & RX_UNDOABLE) - { - /* Only setup to undo it if the thing to undo is active. */ - if ((fd != redirector) && (fcntl (redirector, F_GETFD, 0) != -1)) - r = add_undo_redirect (redirector, ri, -1); - else - r = add_undo_close_redirect (redirector); - if (r < 0 && (redirect->rflags & REDIR_VARASSIGN)) - close (redirector); - REDIRECTION_ERROR (r, errno, fd); - } - -#if defined (BUFFERED_INPUT) - check_bash_input (redirector); -#endif - if (redirect->rflags & REDIR_VARASSIGN) - { - if ((r = redir_varassign (redirect, redirector)) < 0) - { - close (redirector); - close (fd); - return (r); /* XXX */ - } - } - else if (fd != redirector && dup2 (fd, redirector) < 0) - { - r = errno; - close (fd); - return (r); - } - -#if defined (BUFFERED_INPUT) - duplicate_buffered_stream (fd, redirector); -#endif - - if ((flags & RX_CLEXEC) && (redirector > 2)) - SET_CLOSE_ON_EXEC (redirector); - } - - if (fd != redirector) -#if defined (BUFFERED_INPUT) - close_buffered_fd (fd); -#else - close (fd); -#endif - } - break; - - case r_duplicating_input: - case r_duplicating_output: - case r_move_input: - case r_move_output: - if ((flags & RX_ACTIVE) && (redirect->rflags & REDIR_VARASSIGN)) - { - redirector = fcntl (redir_fd, F_DUPFD, SHELL_FD_BASE); /* XXX try this for now */ - r = errno; - if (redirector < 0) - sys_error (_("redirection error: cannot duplicate fd")); - REDIRECTION_ERROR (redirector, r, -1); - } - - if ((flags & RX_ACTIVE) && (redir_fd != redirector)) - { - if (flags & RX_UNDOABLE) - { - /* Only setup to undo it if the thing to undo is active. */ - if (fcntl (redirector, F_GETFD, 0) != -1) - r = add_undo_redirect (redirector, ri, redir_fd); - else - r = add_undo_close_redirect (redirector); - if (r < 0 && (redirect->rflags & REDIR_VARASSIGN)) - close (redirector); - REDIRECTION_ERROR (r, errno, -1); - } -#if defined (BUFFERED_INPUT) - check_bash_input (redirector); -#endif - if (redirect->rflags & REDIR_VARASSIGN) - { - if ((r = redir_varassign (redirect, redirector)) < 0) - { - close (redirector); - return (r); /* XXX */ - } - } - /* This is correct. 2>&1 means dup2 (1, 2); */ - else if (dup2 (redir_fd, redirector) < 0) - return (errno); - -#if defined (BUFFERED_INPUT) - if (ri == r_duplicating_input || ri == r_move_input) - duplicate_buffered_stream (redir_fd, redirector); -#endif /* BUFFERED_INPUT */ - - /* First duplicate the close-on-exec state of redirectee. dup2 - leaves the flag unset on the new descriptor, which means it - stays open. Only set the close-on-exec bit for file descriptors - greater than 2 in any case, since 0-2 should always be open - unless closed by something like `exec 2<&-'. It should always - be safe to set fds > 2 to close-on-exec if they're being used to - save file descriptors < 2, since we don't need to preserve the - state of the close-on-exec flag for those fds -- they should - always be open. */ - /* if ((already_set || set_unconditionally) && (ok_to_set)) - set_it () */ -#if 0 - if (((fcntl (redir_fd, F_GETFD, 0) == 1) || redir_fd < 2 || (flags & RX_CLEXEC)) && - (redirector > 2)) -#else - if (((fcntl (redir_fd, F_GETFD, 0) == 1) || (redir_fd < 2 && (flags & RX_INTERNAL)) || (flags & RX_CLEXEC)) && - (redirector > 2)) -#endif - SET_CLOSE_ON_EXEC (redirector); - - /* When undoing saving of non-standard file descriptors (>=3) using - file descriptors >= SHELL_FD_BASE, we set the saving fd to be - close-on-exec and use a flag to decide how to set close-on-exec - when the fd is restored. */ - if ((redirect->flags & RX_INTERNAL) && (redirect->flags & RX_SAVCLEXEC) && redirector >= 3 && (redir_fd >= SHELL_FD_BASE || (redirect->flags & RX_SAVEFD))) - SET_OPEN_ON_EXEC (redirector); - - /* dup-and-close redirection */ - if (ri == r_move_input || ri == r_move_output) - { - xtrace_fdchk (redir_fd); - - close (redir_fd); -#if defined (COPROCESS_SUPPORT) - coproc_fdchk (redir_fd); /* XXX - loses coproc fds */ -#endif - } - } - break; - - case r_close_this: - if (flags & RX_ACTIVE) - { - if (redirect->rflags & REDIR_VARASSIGN) - { - redirector = redir_varvalue (redirect); - if (redirector < 0) - return AMBIGUOUS_REDIRECT; - } - - r = 0; - if ((flags & RX_UNDOABLE) && (fcntl (redirector, F_GETFD, 0) != -1)) - { - r = add_undo_redirect (redirector, ri, -1); - REDIRECTION_ERROR (r, errno, redirector); - } - -#if defined (COPROCESS_SUPPORT) - coproc_fdchk (redirector); -#endif - xtrace_fdchk (redirector); - -#if defined (BUFFERED_INPUT) - check_bash_input (redirector); - close_buffered_fd (redirector); -#else /* !BUFFERED_INPUT */ - close (redirector); -#endif /* !BUFFERED_INPUT */ - } - break; - - case r_duplicating_input_word: - case r_duplicating_output_word: - break; - } - return (0); -} - -/* Remember the file descriptor associated with the slot FD, - on REDIRECTION_UNDO_LIST. Note that the list will be reversed - before it is executed. Any redirections that need to be undone - even if REDIRECTION_UNDO_LIST is discarded by the exec builtin - are also saved on EXEC_REDIRECTION_UNDO_LIST. FDBASE says where to - start the duplicating. If it's less than SHELL_FD_BASE, we're ok, - and can use SHELL_FD_BASE (-1 == don't care). If it's >= SHELL_FD_BASE, - we have to make sure we don't use fdbase to save a file descriptor, - since we're going to use it later (e.g., make sure we don't save fd 0 - to fd 10 if we have a redirection like 0<&10). If the value of fdbase - puts the process over its fd limit, causing fcntl to fail, we try - again with SHELL_FD_BASE. Return 0 on success, -1 on error. */ -static int -add_undo_redirect (fd, ri, fdbase) - int fd; - enum r_instruction ri; - int fdbase; -{ - int new_fd, clexec_flag, savefd_flag; - REDIRECT *new_redirect, *closer, *dummy_redirect; - REDIRECTEE sd; - - savefd_flag = 0; - new_fd = fcntl (fd, F_DUPFD, (fdbase < SHELL_FD_BASE) ? SHELL_FD_BASE : fdbase+1); - if (new_fd < 0) - new_fd = fcntl (fd, F_DUPFD, SHELL_FD_BASE); - if (new_fd < 0) - { - new_fd = fcntl (fd, F_DUPFD, 0); - savefd_flag = 1; - } - - if (new_fd < 0) - { - sys_error (_("redirection error: cannot duplicate fd")); - return (-1); - } - - clexec_flag = fcntl (fd, F_GETFD, 0); - - sd.dest = new_fd; - rd.dest = 0; - closer = make_redirection (sd, r_close_this, rd, 0); - closer->flags |= RX_INTERNAL; - dummy_redirect = copy_redirects (closer); - - sd.dest = fd; - rd.dest = new_fd; - if (fd == 0) - new_redirect = make_redirection (sd, r_duplicating_input, rd, 0); - else - new_redirect = make_redirection (sd, r_duplicating_output, rd, 0); - new_redirect->flags |= RX_INTERNAL; - if (savefd_flag) - new_redirect->flags |= RX_SAVEFD; - if (clexec_flag == 0 && fd >= 3 && (new_fd >= SHELL_FD_BASE || savefd_flag)) - new_redirect->flags |= RX_SAVCLEXEC; - new_redirect->next = closer; - - closer->next = redirection_undo_list; - redirection_undo_list = new_redirect; - - /* Save redirections that need to be undone even if the undo list - is thrown away by the `exec' builtin. */ - add_exec_redirect (dummy_redirect); - - /* experimental: if we're saving a redirection to undo for a file descriptor - above SHELL_FD_BASE, add a redirection to be undone if the exec builtin - causes redirections to be discarded. There needs to be a difference - between fds that are used to save other fds and then are the target of - user redirections and fds that are just the target of user redirections. - We use the close-on-exec flag to tell the difference; fds > SHELL_FD_BASE - that have the close-on-exec flag set are assumed to be fds used internally - to save others. */ - if (fd >= SHELL_FD_BASE && ri != r_close_this && clexec_flag) - { - sd.dest = fd; - rd.dest = new_fd; - new_redirect = make_redirection (sd, r_duplicating_output, rd, 0); - new_redirect->flags |= RX_INTERNAL; - - add_exec_redirect (new_redirect); - } - - /* File descriptors used only for saving others should always be - marked close-on-exec. Unfortunately, we have to preserve the - close-on-exec state of the file descriptor we are saving, since - fcntl (F_DUPFD) sets the new file descriptor to remain open - across execs. If, however, the file descriptor whose state we - are saving is <= 2, we can just set the close-on-exec flag, - because file descriptors 0-2 should always be open-on-exec, - and the restore above in do_redirection() will take care of it. */ - if (clexec_flag || fd < 3) - SET_CLOSE_ON_EXEC (new_fd); - else if (redirection_undo_list->flags & RX_SAVCLEXEC) - SET_CLOSE_ON_EXEC (new_fd); - - return (0); -} - -/* Set up to close FD when we are finished with the current command - and its redirections. Return 0 on success, -1 on error. */ -static int -add_undo_close_redirect (fd) - int fd; -{ - REDIRECT *closer; - REDIRECTEE sd; - - sd.dest = fd; - rd.dest = 0; - closer = make_redirection (sd, r_close_this, rd, 0); - closer->flags |= RX_INTERNAL; - closer->next = redirection_undo_list; - redirection_undo_list = closer; - - return 0; -} - -static void -add_exec_redirect (dummy_redirect) - REDIRECT *dummy_redirect; -{ - dummy_redirect->next = exec_redirection_undo_list; - exec_redirection_undo_list = dummy_redirect; -} - -/* Return 1 if the redirection specified by RI and REDIRECTOR alters the - standard input. */ -static int -stdin_redirection (ri, redirector) - enum r_instruction ri; - int redirector; -{ - switch (ri) - { - case r_input_direction: - case r_inputa_direction: - case r_input_output: - case r_reading_until: - case r_deblank_reading_until: - case r_reading_string: - return (1); - case r_duplicating_input: - case r_duplicating_input_word: - case r_close_this: - return (redirector == 0); - case r_output_direction: - case r_appending_to: - case r_duplicating_output: - case r_err_and_out: - case r_append_err_and_out: - case r_output_force: - case r_duplicating_output_word: - return (0); - } - return (0); -} - -/* Return non-zero if any of the redirections in REDIRS alter the standard - input. */ -int -stdin_redirects (redirs) - REDIRECT *redirs; -{ - REDIRECT *rp; - int n; - - for (n = 0, rp = redirs; rp; rp = rp->next) - if ((rp->rflags & REDIR_VARASSIGN) == 0) - n += stdin_redirection (rp->instruction, rp->redirector.dest); - return n; -} - -/* These don't yet handle array references */ -static int -redir_varassign (redir, fd) - REDIRECT *redir; - int fd; -{ - WORD_DESC *w; - SHELL_VAR *v; - - w = redir->redirector.filename; - v = bind_var_to_int (w->word, fd); - if (v == 0 || readonly_p (v) || noassign_p (v)) - return BADVAR_REDIRECT; - - return 0; -} - -static int -redir_varvalue (redir) - REDIRECT *redir; -{ - SHELL_VAR *v; - char *val; - intmax_t vmax; - int i; - - /* XXX - handle set -u here? */ - v = find_variable (redir->redirector.filename->word); - if (v == 0 || invisible_p (v)) - return -1; - - val = get_variable_value (v); - if (val == 0 || *val == 0) - return -1; - - if (legal_number (val, &vmax) < 0) - return -1; - - i = vmax; /* integer truncation */ - return i; -} diff --git a/subst.c~ b/subst.c~ deleted file mode 100644 index c6d673797..000000000 --- a/subst.c~ +++ /dev/null @@ -1,9417 +0,0 @@ -/* subst.c -- The part of the shell that does parameter, command, arithmetic, - and globbing substitutions. */ - -/* ``Have a little faith, there's magic in the night. You ain't a - beauty, but, hey, you're alright.'' */ - -/* Copyright (C) 1987-2012 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#include "config.h" - -#include "bashtypes.h" -#include -#include "chartypes.h" -#if defined (HAVE_PWD_H) -# include -#endif -#include -#include - -#if defined (HAVE_UNISTD_H) -# include -#endif - -#include "bashansi.h" -#include "posixstat.h" -#include "bashintl.h" - -#include "shell.h" -#include "parser.h" -#include "flags.h" -#include "jobs.h" -#include "execute_cmd.h" -#include "filecntl.h" -#include "trap.h" -#include "pathexp.h" -#include "mailcheck.h" - -#include "shmbutil.h" -#include "typemax.h" - -#include "builtins/getopt.h" -#include "builtins/common.h" - -#include "builtins/builtext.h" - -#include -#include - -#if !defined (errno) -extern int errno; -#endif /* !errno */ - -/* The size that strings change by. */ -#define DEFAULT_INITIAL_ARRAY_SIZE 112 -#define DEFAULT_ARRAY_SIZE 128 - -/* Variable types. */ -#define VT_VARIABLE 0 -#define VT_POSPARMS 1 -#define VT_ARRAYVAR 2 -#define VT_ARRAYMEMBER 3 -#define VT_ASSOCVAR 4 - -#define VT_STARSUB 128 /* $* or ${array[*]} -- used to split */ - -/* Flags for quoted_strchr */ -#define ST_BACKSL 0x01 -#define ST_CTLESC 0x02 -#define ST_SQUOTE 0x04 /* unused yet */ -#define ST_DQUOTE 0x08 /* unused yet */ - -/* Flags for the `pflags' argument to param_expand() */ -#define PF_NOCOMSUB 0x01 /* Do not perform command substitution */ -#define PF_IGNUNBOUND 0x02 /* ignore unbound vars even if -u set */ -#define PF_NOSPLIT2 0x04 /* same as W_NOSPLIT2 */ -#define PF_ASSIGNRHS 0x08 /* same as W_ASSIGNRHS */ - -/* These defs make it easier to use the editor. */ -#define LBRACE '{' -#define RBRACE '}' -#define LPAREN '(' -#define RPAREN ')' - -#if defined (HANDLE_MULTIBYTE) -#define WLPAREN L'(' -#define WRPAREN L')' -#endif - -/* Evaluates to 1 if C is one of the shell's special parameters whose length - can be taken, but is also one of the special expansion characters. */ -#define VALID_SPECIAL_LENGTH_PARAM(c) \ - ((c) == '-' || (c) == '?' || (c) == '#') - -/* Evaluates to 1 if C is one of the shell's special parameters for which an - indirect variable reference may be made. */ -#define VALID_INDIR_PARAM(c) \ - ((posixly_correct == 0 && (c) == '#') || (posixly_correct == 0 && (c) == '?') || (c) == '@' || (c) == '*') - -/* Evaluates to 1 if C is one of the OP characters that follows the parameter - in ${parameter[:]OPword}. */ -#define VALID_PARAM_EXPAND_CHAR(c) (sh_syntaxtab[(unsigned char)c] & CSUBSTOP) - -/* Evaluates to 1 if this is one of the shell's special variables. */ -#define SPECIAL_VAR(name, wi) \ - ((DIGIT (*name) && all_digits (name)) || \ - (name[1] == '\0' && (sh_syntaxtab[(unsigned char)*name] & CSPECVAR)) || \ - (wi && name[2] == '\0' && VALID_INDIR_PARAM (name[1]))) - -/* An expansion function that takes a string and a quoted flag and returns - a WORD_LIST *. Used as the type of the third argument to - expand_string_if_necessary(). */ -typedef WORD_LIST *EXPFUNC __P((char *, int)); - -/* Process ID of the last command executed within command substitution. */ -pid_t last_command_subst_pid = NO_PID; -pid_t current_command_subst_pid = NO_PID; - -/* Variables used to keep track of the characters in IFS. */ -SHELL_VAR *ifs_var; -char *ifs_value; -unsigned char ifs_cmap[UCHAR_MAX + 1]; - -#if defined (HANDLE_MULTIBYTE) -unsigned char ifs_firstc[MB_LEN_MAX]; -size_t ifs_firstc_len; -#else -unsigned char ifs_firstc; -#endif - -/* Sentinel to tell when we are performing variable assignments preceding a - command name and putting them into the environment. Used to make sure - we use the temporary environment when looking up variable values. */ -int assigning_in_environment; - -/* Used to hold a list of variable assignments preceding a command. Global - so the SIGCHLD handler in jobs.c can unwind-protect it when it runs a - SIGCHLD trap and so it can be saved and restored by the trap handlers. */ -WORD_LIST *subst_assign_varlist = (WORD_LIST *)NULL; - -/* Extern functions and variables from different files. */ -extern int last_command_exit_value, last_command_exit_signal; -extern int subshell_environment, line_number; -extern int subshell_level, parse_and_execute_level, sourcelevel; -extern int eof_encountered; -extern int return_catch_flag, return_catch_value; -extern pid_t dollar_dollar_pid; -extern int posixly_correct; -extern char *this_command_name; -extern struct fd_bitmap *current_fds_to_close; -extern int wordexp_only; -extern int expanding_redir; -extern int tempenv_assign_error; - -#if !defined (HAVE_WCSDUP) && defined (HANDLE_MULTIBYTE) -extern wchar_t *wcsdup __P((const wchar_t *)); -#endif - -/* Non-zero means to allow unmatched globbed filenames to expand to - a null file. */ -int allow_null_glob_expansion; - -/* Non-zero means to throw an error when globbing fails to match anything. */ -int fail_glob_expansion; - -#if 0 -/* Variables to keep track of which words in an expanded word list (the - output of expand_word_list_internal) are the result of globbing - expansions. GLOB_ARGV_FLAGS is used by execute_cmd.c. - (CURRENTLY UNUSED). */ -char *glob_argv_flags; -static int glob_argv_flags_size; -#endif - -static WORD_LIST expand_word_error, expand_word_fatal; -static WORD_DESC expand_wdesc_error, expand_wdesc_fatal; -static char expand_param_error, expand_param_fatal; -static char extract_string_error, extract_string_fatal; - -/* Tell the expansion functions to not longjmp back to top_level on fatal - errors. Enabled when doing completion and prompt string expansion. */ -static int no_longjmp_on_fatal_error = 0; - -/* Set by expand_word_unsplit; used to inhibit splitting and re-joining - $* on $IFS, primarily when doing assignment statements. */ -static int expand_no_split_dollar_star = 0; - -/* A WORD_LIST of words to be expanded by expand_word_list_internal, - without any leading variable assignments. */ -static WORD_LIST *garglist = (WORD_LIST *)NULL; - -static char *quoted_substring __P((char *, int, int)); -static int quoted_strlen __P((char *)); -static char *quoted_strchr __P((char *, int, int)); - -static char *expand_string_if_necessary __P((char *, int, EXPFUNC *)); -static inline char *expand_string_to_string_internal __P((char *, int, EXPFUNC *)); -static WORD_LIST *call_expand_word_internal __P((WORD_DESC *, int, int, int *, int *)); -static WORD_LIST *expand_string_internal __P((char *, int)); -static WORD_LIST *expand_string_leave_quoted __P((char *, int)); -static WORD_LIST *expand_string_for_rhs __P((char *, int, int *, int *)); - -static WORD_LIST *list_quote_escapes __P((WORD_LIST *)); -static char *make_quoted_char __P((int)); -static WORD_LIST *quote_list __P((WORD_LIST *)); - -static int unquoted_substring __P((char *, char *)); -static int unquoted_member __P((int, char *)); - -#if defined (ARRAY_VARS) -static SHELL_VAR *do_compound_assignment __P((char *, char *, int)); -#endif -static int do_assignment_internal __P((const WORD_DESC *, int)); - -static char *string_extract_verbatim __P((char *, size_t, int *, char *, int)); -static char *string_extract __P((char *, int *, char *, int)); -static char *string_extract_double_quoted __P((char *, int *, int)); -static inline char *string_extract_single_quoted __P((char *, int *)); -static inline int skip_single_quoted __P((const char *, size_t, int)); -static int skip_double_quoted __P((char *, size_t, int)); -static char *extract_delimited_string __P((char *, int *, char *, char *, char *, int)); -static char *extract_dollar_brace_string __P((char *, int *, int, int)); -static int skip_matched_pair __P((const char *, int, int, int, int)); - -static char *pos_params __P((char *, int, int, int)); - -static unsigned char *mb_getcharlens __P((char *, int)); - -static char *remove_upattern __P((char *, char *, int)); -#if defined (HANDLE_MULTIBYTE) -static wchar_t *remove_wpattern __P((wchar_t *, size_t, wchar_t *, int)); -#endif -static char *remove_pattern __P((char *, char *, int)); - -static int match_upattern __P((char *, char *, int, char **, char **)); -#if defined (HANDLE_MULTIBYTE) -static int match_wpattern __P((wchar_t *, char **, size_t, wchar_t *, int, char **, char **)); -#endif -static int match_pattern __P((char *, char *, int, char **, char **)); -static int getpatspec __P((int, char *)); -static char *getpattern __P((char *, int, int)); -static char *variable_remove_pattern __P((char *, char *, int, int)); -static char *list_remove_pattern __P((WORD_LIST *, char *, int, int, int)); -static char *parameter_list_remove_pattern __P((int, char *, int, int)); -#ifdef ARRAY_VARS -static char *array_remove_pattern __P((SHELL_VAR *, char *, int, char *, int)); -#endif -static char *parameter_brace_remove_pattern __P((char *, char *, int, char *, int, int, int)); - -static char *process_substitute __P((char *, int)); - -static char *read_comsub __P((int, int, int *)); - -#ifdef ARRAY_VARS -static arrayind_t array_length_reference __P((char *)); -#endif - -static int valid_brace_expansion_word __P((char *, int)); -static int chk_atstar __P((char *, int, int *, int *)); -static int chk_arithsub __P((const char *, int)); - -static WORD_DESC *parameter_brace_expand_word __P((char *, int, int, int, arrayind_t *)); -static WORD_DESC *parameter_brace_expand_indir __P((char *, int, int, int *, int *)); -static WORD_DESC *parameter_brace_expand_rhs __P((char *, char *, int, int, int *, int *)); -static void parameter_brace_expand_error __P((char *, char *)); - -static int valid_length_expression __P((char *)); -static intmax_t parameter_brace_expand_length __P((char *)); - -static char *skiparith __P((char *, int)); -static int verify_substring_values __P((SHELL_VAR *, char *, char *, int, intmax_t *, intmax_t *)); -static int get_var_and_type __P((char *, char *, arrayind_t, int, int, SHELL_VAR **, char **)); -static char *mb_substring __P((char *, int, int)); -static char *parameter_brace_substring __P((char *, char *, int, char *, int, int)); - -static int shouldexp_replacement __P((char *)); - -static char *pos_params_pat_subst __P((char *, char *, char *, int)); - -static char *parameter_brace_patsub __P((char *, char *, int, char *, int, int)); - -static char *pos_params_casemod __P((char *, char *, int, int)); -static char *parameter_brace_casemod __P((char *, char *, int, int, char *, int, int)); - -static WORD_DESC *parameter_brace_expand __P((char *, int *, int, int, int *, int *)); -static WORD_DESC *param_expand __P((char *, int *, int, int *, int *, int *, int *, int)); - -static WORD_LIST *expand_word_internal __P((WORD_DESC *, int, int, int *, int *)); - -static WORD_LIST *word_list_split __P((WORD_LIST *)); - -static void exp_jump_to_top_level __P((int)); - -static WORD_LIST *separate_out_assignments __P((WORD_LIST *)); -static WORD_LIST *glob_expand_word_list __P((WORD_LIST *, int)); -#ifdef BRACE_EXPANSION -static WORD_LIST *brace_expand_word_list __P((WORD_LIST *, int)); -#endif -#if defined (ARRAY_VARS) -static int make_internal_declare __P((char *, char *)); -#endif -static WORD_LIST *shell_expand_word_list __P((WORD_LIST *, int)); -static WORD_LIST *expand_word_list_internal __P((WORD_LIST *, int)); - -/* **************************************************************** */ -/* */ -/* Utility Functions */ -/* */ -/* **************************************************************** */ - -#if defined (DEBUG) -void -dump_word_flags (flags) - int flags; -{ - int f; - - f = flags; - fprintf (stderr, "%d -> ", f); - if (f & W_ASSIGNASSOC) - { - f &= ~W_ASSIGNASSOC; - fprintf (stderr, "W_ASSIGNASSOC%s", f ? "|" : ""); - } - if (f & W_HASCTLESC) - { - f &= ~W_HASCTLESC; - fprintf (stderr, "W_HASCTLESC%s", f ? "|" : ""); - } - if (f & W_NOPROCSUB) - { - f &= ~W_NOPROCSUB; - fprintf (stderr, "W_NOPROCSUB%s", f ? "|" : ""); - } - if (f & W_DQUOTE) - { - f &= ~W_DQUOTE; - fprintf (stderr, "W_DQUOTE%s", f ? "|" : ""); - } - if (f & W_HASQUOTEDNULL) - { - f &= ~W_HASQUOTEDNULL; - fprintf (stderr, "W_HASQUOTEDNULL%s", f ? "|" : ""); - } - if (f & W_ASSIGNARG) - { - f &= ~W_ASSIGNARG; - fprintf (stderr, "W_ASSIGNARG%s", f ? "|" : ""); - } - if (f & W_ASSNBLTIN) - { - f &= ~W_ASSNBLTIN; - fprintf (stderr, "W_ASSNBLTIN%s", f ? "|" : ""); - } - if (f & W_COMPASSIGN) - { - f &= ~W_COMPASSIGN; - fprintf (stderr, "W_COMPASSIGN%s", f ? "|" : ""); - } - if (f & W_NOEXPAND) - { - f &= ~W_NOEXPAND; - fprintf (stderr, "W_NOEXPAND%s", f ? "|" : ""); - } - if (f & W_ITILDE) - { - f &= ~W_ITILDE; - fprintf (stderr, "W_ITILDE%s", f ? "|" : ""); - } - if (f & W_NOTILDE) - { - f &= ~W_NOTILDE; - fprintf (stderr, "W_NOTILDE%s", f ? "|" : ""); - } - if (f & W_ASSIGNRHS) - { - f &= ~W_ASSIGNRHS; - fprintf (stderr, "W_ASSIGNRHS%s", f ? "|" : ""); - } - if (f & W_NOCOMSUB) - { - f &= ~W_NOCOMSUB; - fprintf (stderr, "W_NOCOMSUB%s", f ? "|" : ""); - } - if (f & W_DOLLARSTAR) - { - f &= ~W_DOLLARSTAR; - fprintf (stderr, "W_DOLLARSTAR%s", f ? "|" : ""); - } - if (f & W_DOLLARAT) - { - f &= ~W_DOLLARAT; - fprintf (stderr, "W_DOLLARAT%s", f ? "|" : ""); - } - if (f & W_TILDEEXP) - { - f &= ~W_TILDEEXP; - fprintf (stderr, "W_TILDEEXP%s", f ? "|" : ""); - } - if (f & W_NOSPLIT2) - { - f &= ~W_NOSPLIT2; - fprintf (stderr, "W_NOSPLIT2%s", f ? "|" : ""); - } - if (f & W_NOGLOB) - { - f &= ~W_NOGLOB; - fprintf (stderr, "W_NOGLOB%s", f ? "|" : ""); - } - if (f & W_NOSPLIT) - { - f &= ~W_NOSPLIT; - fprintf (stderr, "W_NOSPLIT%s", f ? "|" : ""); - } - if (f & W_GLOBEXP) - { - f &= ~W_GLOBEXP; - fprintf (stderr, "W_GLOBEXP%s", f ? "|" : ""); - } - if (f & W_ASSIGNMENT) - { - f &= ~W_ASSIGNMENT; - fprintf (stderr, "W_ASSIGNMENT%s", f ? "|" : ""); - } - if (f & W_QUOTED) - { - f &= ~W_QUOTED; - fprintf (stderr, "W_QUOTED%s", f ? "|" : ""); - } - if (f & W_HASDOLLAR) - { - f &= ~W_HASDOLLAR; - fprintf (stderr, "W_HASDOLLAR%s", f ? "|" : ""); - } - fprintf (stderr, "\n"); - fflush (stderr); -} -#endif - -#ifdef INCLUDE_UNUSED -static char * -quoted_substring (string, start, end) - char *string; - int start, end; -{ - register int len, l; - register char *result, *s, *r; - - len = end - start; - - /* Move to string[start], skipping quoted characters. */ - for (s = string, l = 0; *s && l < start; ) - { - if (*s == CTLESC) - { - s++; - continue; - } - l++; - if (*s == 0) - break; - } - - r = result = (char *)xmalloc (2*len + 1); /* save room for quotes */ - - /* Copy LEN characters, including quote characters. */ - s = string + l; - for (l = 0; l < len; s++) - { - if (*s == CTLESC) - *r++ = *s++; - *r++ = *s; - l++; - if (*s == 0) - break; - } - *r = '\0'; - return result; -} -#endif - -#ifdef INCLUDE_UNUSED -/* Return the length of S, skipping over quoted characters */ -static int -quoted_strlen (s) - char *s; -{ - register char *p; - int i; - - i = 0; - for (p = s; *p; p++) - { - if (*p == CTLESC) - { - p++; - if (*p == 0) - return (i + 1); - } - i++; - } - - return i; -} -#endif - -/* Find the first occurrence of character C in string S, obeying shell - quoting rules. If (FLAGS & ST_BACKSL) is non-zero, backslash-escaped - characters are skipped. If (FLAGS & ST_CTLESC) is non-zero, characters - escaped with CTLESC are skipped. */ -static char * -quoted_strchr (s, c, flags) - char *s; - int c, flags; -{ - register char *p; - - for (p = s; *p; p++) - { - if (((flags & ST_BACKSL) && *p == '\\') - || ((flags & ST_CTLESC) && *p == CTLESC)) - { - p++; - if (*p == '\0') - return ((char *)NULL); - continue; - } - else if (*p == c) - return p; - } - return ((char *)NULL); -} - -/* Return 1 if CHARACTER appears in an unquoted portion of - STRING. Return 0 otherwise. CHARACTER must be a single-byte character. */ -static int -unquoted_member (character, string) - int character; - char *string; -{ - size_t slen; - int sindex, c; - DECLARE_MBSTATE; - - slen = strlen (string); - sindex = 0; - while (c = string[sindex]) - { - if (c == character) - return (1); - - switch (c) - { - default: - ADVANCE_CHAR (string, slen, sindex); - break; - - case '\\': - sindex++; - if (string[sindex]) - ADVANCE_CHAR (string, slen, sindex); - break; - - case '\'': - sindex = skip_single_quoted (string, slen, ++sindex); - break; - - case '"': - sindex = skip_double_quoted (string, slen, ++sindex); - break; - } - } - return (0); -} - -/* Return 1 if SUBSTR appears in an unquoted portion of STRING. */ -static int -unquoted_substring (substr, string) - char *substr, *string; -{ - size_t slen; - int sindex, c, sublen; - DECLARE_MBSTATE; - - if (substr == 0 || *substr == '\0') - return (0); - - slen = strlen (string); - sublen = strlen (substr); - for (sindex = 0; c = string[sindex]; ) - { - if (STREQN (string + sindex, substr, sublen)) - return (1); - - switch (c) - { - case '\\': - sindex++; - if (string[sindex]) - ADVANCE_CHAR (string, slen, sindex); - break; - - case '\'': - sindex = skip_single_quoted (string, slen, ++sindex); - break; - - case '"': - sindex = skip_double_quoted (string, slen, ++sindex); - break; - - default: - ADVANCE_CHAR (string, slen, sindex); - break; - } - } - return (0); -} - -/* Most of the substitutions must be done in parallel. In order - to avoid using tons of unclear goto's, I have some functions - for manipulating malloc'ed strings. They all take INDX, a - pointer to an integer which is the offset into the string - where manipulation is taking place. They also take SIZE, a - pointer to an integer which is the current length of the - character array for this string. */ - -/* Append SOURCE to TARGET at INDEX. SIZE is the current amount - of space allocated to TARGET. SOURCE can be NULL, in which - case nothing happens. Gets rid of SOURCE by freeing it. - Returns TARGET in case the location has changed. */ -INLINE char * -sub_append_string (source, target, indx, size) - char *source, *target; - int *indx, *size; -{ - if (source) - { - int srclen, n; - - srclen = STRLEN (source); - if (srclen >= (int)(*size - *indx)) - { - n = srclen + *indx; - n = (n + DEFAULT_ARRAY_SIZE) - (n % DEFAULT_ARRAY_SIZE); - target = (char *)xrealloc (target, (*size = n)); - } - - FASTCOPY (source, target + *indx, srclen); - *indx += srclen; - target[*indx] = '\0'; - - free (source); - } - return (target); -} - -#if 0 -/* UNUSED */ -/* Append the textual representation of NUMBER to TARGET. - INDX and SIZE are as in SUB_APPEND_STRING. */ -char * -sub_append_number (number, target, indx, size) - intmax_t number; - int *indx, *size; - char *target; -{ - char *temp; - - temp = itos (number); - return (sub_append_string (temp, target, indx, size)); -} -#endif - -/* Extract a substring from STRING, starting at SINDEX and ending with - one of the characters in CHARLIST. Don't make the ending character - part of the string. Leave SINDEX pointing at the ending character. - Understand about backslashes in the string. If (flags & SX_VARNAME) - is non-zero, and array variables have been compiled into the shell, - everything between a `[' and a corresponding `]' is skipped over. - If (flags & SX_NOALLOC) is non-zero, don't return the substring, just - update SINDEX. If (flags & SX_REQMATCH) is non-zero, the string must - contain a closing character from CHARLIST. */ -static char * -string_extract (string, sindex, charlist, flags) - char *string; - int *sindex; - char *charlist; - int flags; -{ - register int c, i; - int found; - size_t slen; - char *temp; - DECLARE_MBSTATE; - - slen = (MB_CUR_MAX > 1) ? strlen (string + *sindex) + *sindex : 0; - i = *sindex; - found = 0; - while (c = string[i]) - { - if (c == '\\') - { - if (string[i + 1]) - i++; - else - break; - } -#if defined (ARRAY_VARS) - else if ((flags & SX_VARNAME) && c == '[') - { - int ni; - /* If this is an array subscript, skip over it and continue. */ - ni = skipsubscript (string, i, 0); - if (string[ni] == ']') - i = ni; - } -#endif - else if (MEMBER (c, charlist)) - { - found = 1; - break; - } - - ADVANCE_CHAR (string, slen, i); - } - - /* If we had to have a matching delimiter and didn't find one, return an - error and let the caller deal with it. */ - if ((flags & SX_REQMATCH) && found == 0) - { - *sindex = i; - return (&extract_string_error); - } - - temp = (flags & SX_NOALLOC) ? (char *)NULL : substring (string, *sindex, i); - *sindex = i; - - return (temp); -} - -/* Extract the contents of STRING as if it is enclosed in double quotes. - SINDEX, when passed in, is the offset of the character immediately - following the opening double quote; on exit, SINDEX is left pointing after - the closing double quote. If STRIPDQ is non-zero, unquoted double - quotes are stripped and the string is terminated by a null byte. - Backslashes between the embedded double quotes are processed. If STRIPDQ - is zero, an unquoted `"' terminates the string. */ -static char * -string_extract_double_quoted (string, sindex, stripdq) - char *string; - int *sindex, stripdq; -{ - size_t slen; - char *send; - int j, i, t; - unsigned char c; - char *temp, *ret; /* The new string we return. */ - int pass_next, backquote, si; /* State variables for the machine. */ - int dquote; - DECLARE_MBSTATE; - - slen = strlen (string + *sindex) + *sindex; - send = string + slen; - - pass_next = backquote = dquote = 0; - temp = (char *)xmalloc (1 + slen - *sindex); - - j = 0; - i = *sindex; - while (c = string[i]) - { - /* Process a character that was quoted by a backslash. */ - if (pass_next) - { - /* XXX - take another look at this in light of Interp 221 */ - /* Posix.2 sez: - - ``The backslash shall retain its special meaning as an escape - character only when followed by one of the characters: - $ ` " \ ''. - - If STRIPDQ is zero, we handle the double quotes here and let - expand_word_internal handle the rest. If STRIPDQ is non-zero, - we have already been through one round of backslash stripping, - and want to strip these backslashes only if DQUOTE is non-zero, - indicating that we are inside an embedded double-quoted string. */ - - /* If we are in an embedded quoted string, then don't strip - backslashes before characters for which the backslash - retains its special meaning, but remove backslashes in - front of other characters. If we are not in an - embedded quoted string, don't strip backslashes at all. - This mess is necessary because the string was already - surrounded by double quotes (and sh has some really weird - quoting rules). - The returned string will be run through expansion as if - it were double-quoted. */ - if ((stripdq == 0 && c != '"') || - (stripdq && ((dquote && (sh_syntaxtab[c] & CBSDQUOTE)) || dquote == 0))) - temp[j++] = '\\'; - pass_next = 0; - -add_one_character: - COPY_CHAR_I (temp, j, string, send, i); - continue; - } - - /* A backslash protects the next character. The code just above - handles preserving the backslash in front of any character but - a double quote. */ - if (c == '\\') - { - pass_next++; - i++; - continue; - } - - /* Inside backquotes, ``the portion of the quoted string from the - initial backquote and the characters up to the next backquote - that is not preceded by a backslash, having escape characters - removed, defines that command''. */ - if (backquote) - { - if (c == '`') - backquote = 0; - temp[j++] = c; - i++; - continue; - } - - if (c == '`') - { - temp[j++] = c; - backquote++; - i++; - continue; - } - - /* Pass everything between `$(' and the matching `)' or a quoted - ${ ... } pair through according to the Posix.2 specification. */ - if (c == '$' && ((string[i + 1] == LPAREN) || (string[i + 1] == LBRACE))) - { - int free_ret = 1; - - si = i + 2; - if (string[i + 1] == LPAREN) - ret = extract_command_subst (string, &si, 0); - else - ret = extract_dollar_brace_string (string, &si, Q_DOUBLE_QUOTES, 0); - - temp[j++] = '$'; - temp[j++] = string[i + 1]; - - /* Just paranoia; ret will not be 0 unless no_longjmp_on_fatal_error - is set. */ - if (ret == 0 && no_longjmp_on_fatal_error) - { - free_ret = 0; - ret = string + i + 2; - } - - for (t = 0; ret[t]; t++, j++) - temp[j] = ret[t]; - temp[j] = string[si]; - - if (string[si]) - { - j++; - i = si + 1; - } - else - i = si; - - if (free_ret) - free (ret); - continue; - } - - /* Add any character but a double quote to the quoted string we're - accumulating. */ - if (c != '"') - goto add_one_character; - - /* c == '"' */ - if (stripdq) - { - dquote ^= 1; - i++; - continue; - } - - break; - } - temp[j] = '\0'; - - /* Point to after the closing quote. */ - if (c) - i++; - *sindex = i; - - return (temp); -} - -/* This should really be another option to string_extract_double_quoted. */ -static int -skip_double_quoted (string, slen, sind) - char *string; - size_t slen; - int sind; -{ - int c, i; - char *ret; - int pass_next, backquote, si; - DECLARE_MBSTATE; - - pass_next = backquote = 0; - i = sind; - while (c = string[i]) - { - if (pass_next) - { - pass_next = 0; - ADVANCE_CHAR (string, slen, i); - continue; - } - else if (c == '\\') - { - pass_next++; - i++; - continue; - } - else if (backquote) - { - if (c == '`') - backquote = 0; - ADVANCE_CHAR (string, slen, i); - continue; - } - else if (c == '`') - { - backquote++; - i++; - continue; - } - else if (c == '$' && ((string[i + 1] == LPAREN) || (string[i + 1] == LBRACE))) - { - si = i + 2; - if (string[i + 1] == LPAREN) - ret = extract_command_subst (string, &si, SX_NOALLOC); - else - ret = extract_dollar_brace_string (string, &si, Q_DOUBLE_QUOTES, SX_NOALLOC); - - i = si + 1; - continue; - } - else if (c != '"') - { - ADVANCE_CHAR (string, slen, i); - continue; - } - else - break; - } - - if (c) - i++; - - return (i); -} - -/* Extract the contents of STRING as if it is enclosed in single quotes. - SINDEX, when passed in, is the offset of the character immediately - following the opening single quote; on exit, SINDEX is left pointing after - the closing single quote. */ -static inline char * -string_extract_single_quoted (string, sindex) - char *string; - int *sindex; -{ - register int i; - size_t slen; - char *t; - DECLARE_MBSTATE; - - /* Don't need slen for ADVANCE_CHAR unless multibyte chars possible. */ - slen = (MB_CUR_MAX > 1) ? strlen (string + *sindex) + *sindex : 0; - i = *sindex; - while (string[i] && string[i] != '\'') - ADVANCE_CHAR (string, slen, i); - - t = substring (string, *sindex, i); - - if (string[i]) - i++; - *sindex = i; - - return (t); -} - -static inline int -skip_single_quoted (string, slen, sind) - const char *string; - size_t slen; - int sind; -{ - register int c; - DECLARE_MBSTATE; - - c = sind; - while (string[c] && string[c] != '\'') - ADVANCE_CHAR (string, slen, c); - - if (string[c]) - c++; - return c; -} - -/* Just like string_extract, but doesn't hack backslashes or any of - that other stuff. Obeys CTLESC quoting. Used to do splitting on $IFS. */ -static char * -string_extract_verbatim (string, slen, sindex, charlist, flags) - char *string; - size_t slen; - int *sindex; - char *charlist; - int flags; -{ - register int i; -#if defined (HANDLE_MULTIBYTE) - size_t clen; - wchar_t *wcharlist; -#endif - int c; - char *temp; - DECLARE_MBSTATE; - - if (charlist[0] == '\'' && charlist[1] == '\0') - { - temp = string_extract_single_quoted (string, sindex); - --*sindex; /* leave *sindex at separator character */ - return temp; - } - - i = *sindex; -#if 0 - /* See how the MBLEN and ADVANCE_CHAR macros work to understand why we need - this only if MB_CUR_MAX > 1. */ - slen = (MB_CUR_MAX > 1) ? strlen (string + *sindex) + *sindex : 1; -#endif -#if defined (HANDLE_MULTIBYTE) - clen = strlen (charlist); - wcharlist = 0; -#endif - while (c = string[i]) - { -#if defined (HANDLE_MULTIBYTE) - size_t mblength; -#endif - if ((flags & SX_NOCTLESC) == 0 && c == CTLESC) - { - i += 2; - continue; - } - /* Even if flags contains SX_NOCTLESC, we let CTLESC quoting CTLNUL - through, to protect the CTLNULs from later calls to - remove_quoted_nulls. */ - else if ((flags & SX_NOESCCTLNUL) == 0 && c == CTLESC && string[i+1] == CTLNUL) - { - i += 2; - continue; - } - -#if defined (HANDLE_MULTIBYTE) - mblength = MBLEN (string + i, slen - i); - if (mblength > 1) - { - wchar_t wc; - mblength = mbtowc (&wc, string + i, slen - i); - if (MB_INVALIDCH (mblength)) - { - if (MEMBER (c, charlist)) - break; - } - else - { - if (wcharlist == 0) - { - size_t len; - len = mbstowcs (wcharlist, charlist, 0); - if (len == -1) - len = 0; - wcharlist = (wchar_t *)xmalloc (sizeof (wchar_t) * (len + 1)); - mbstowcs (wcharlist, charlist, len + 1); - } - - if (wcschr (wcharlist, wc)) - break; - } - } - else -#endif - if (MEMBER (c, charlist)) - break; - - ADVANCE_CHAR (string, slen, i); - } - -#if defined (HANDLE_MULTIBYTE) - FREE (wcharlist); -#endif - - temp = substring (string, *sindex, i); - *sindex = i; - - return (temp); -} - -/* Extract the $( construct in STRING, and return a new string. - Start extracting at (SINDEX) as if we had just seen "$(". - Make (SINDEX) get the position of the matching ")". ) - XFLAGS is additional flags to pass to other extraction functions. */ -char * -extract_command_subst (string, sindex, xflags) - char *string; - int *sindex; - int xflags; -{ - if (string[*sindex] == LPAREN) - return (extract_delimited_string (string, sindex, "$(", "(", ")", xflags|SX_COMMAND)); /*)*/ - else - { - xflags |= (no_longjmp_on_fatal_error ? SX_NOLONGJMP : 0); - return (xparse_dolparen (string, string+*sindex, sindex, xflags)); - } -} - -/* Extract the $[ construct in STRING, and return a new string. (]) - Start extracting at (SINDEX) as if we had just seen "$[". - Make (SINDEX) get the position of the matching "]". */ -char * -extract_arithmetic_subst (string, sindex) - char *string; - int *sindex; -{ - return (extract_delimited_string (string, sindex, "$[", "[", "]", 0)); /*]*/ -} - -#if defined (PROCESS_SUBSTITUTION) -/* Extract the <( or >( construct in STRING, and return a new string. - Start extracting at (SINDEX) as if we had just seen "<(". - Make (SINDEX) get the position of the matching ")". */ /*))*/ -char * -extract_process_subst (string, starter, sindex) - char *string; - char *starter; - int *sindex; -{ - return (extract_delimited_string (string, sindex, starter, "(", ")", SX_COMMAND)); -} -#endif /* PROCESS_SUBSTITUTION */ - -#if defined (ARRAY_VARS) -/* This can be fooled by unquoted right parens in the passed string. If - each caller verifies that the last character in STRING is a right paren, - we don't even need to call extract_delimited_string. */ -char * -extract_array_assignment_list (string, sindex) - char *string; - int *sindex; -{ - int slen; - char *ret; - - slen = strlen (string); /* ( */ - if (string[slen - 1] == ')') - { - ret = substring (string, *sindex, slen - 1); - *sindex = slen - 1; - return ret; - } - return 0; -} -#endif - -/* Extract and create a new string from the contents of STRING, a - character string delimited with OPENER and CLOSER. SINDEX is - the address of an int describing the current offset in STRING; - it should point to just after the first OPENER found. On exit, - SINDEX gets the position of the last character of the matching CLOSER. - If OPENER is more than a single character, ALT_OPENER, if non-null, - contains a character string that can also match CLOSER and thus - needs to be skipped. */ -static char * -extract_delimited_string (string, sindex, opener, alt_opener, closer, flags) - char *string; - int *sindex; - char *opener, *alt_opener, *closer; - int flags; -{ - int i, c, si; - size_t slen; - char *t, *result; - int pass_character, nesting_level, in_comment; - int len_closer, len_opener, len_alt_opener; - DECLARE_MBSTATE; - - slen = strlen (string + *sindex) + *sindex; - len_opener = STRLEN (opener); - len_alt_opener = STRLEN (alt_opener); - len_closer = STRLEN (closer); - - pass_character = in_comment = 0; - - nesting_level = 1; - i = *sindex; - - while (nesting_level) - { - c = string[i]; - - if (c == 0) - break; - - if (in_comment) - { - if (c == '\n') - in_comment = 0; - ADVANCE_CHAR (string, slen, i); - continue; - } - - if (pass_character) /* previous char was backslash */ - { - pass_character = 0; - ADVANCE_CHAR (string, slen, i); - continue; - } - - /* Not exactly right yet; should handle shell metacharacters and - multibyte characters, too. See COMMENT_BEGIN define in parse.y */ - if ((flags & SX_COMMAND) && c == '#' && (i == 0 || string[i - 1] == '\n' || shellblank (string[i - 1]))) - { - in_comment = 1; - ADVANCE_CHAR (string, slen, i); - continue; - } - - if (c == CTLESC || c == '\\') - { - pass_character++; - i++; - continue; - } - - /* Process a nested command substitution, but only if we're parsing an - arithmetic substitution. */ - if ((flags & SX_COMMAND) && string[i] == '$' && string[i+1] == LPAREN) - { - si = i + 2; - t = extract_command_subst (string, &si, flags|SX_NOALLOC); - i = si + 1; - continue; - } - - /* Process a nested OPENER. */ - if (STREQN (string + i, opener, len_opener)) - { - si = i + len_opener; - t = extract_delimited_string (string, &si, opener, alt_opener, closer, flags|SX_NOALLOC); - i = si + 1; - continue; - } - - /* Process a nested ALT_OPENER */ - if (len_alt_opener && STREQN (string + i, alt_opener, len_alt_opener)) - { - si = i + len_alt_opener; - t = extract_delimited_string (string, &si, alt_opener, alt_opener, closer, flags|SX_NOALLOC); - i = si + 1; - continue; - } - - /* If the current substring terminates the delimited string, decrement - the nesting level. */ - if (STREQN (string + i, closer, len_closer)) - { - i += len_closer - 1; /* move to last byte of the closer */ - nesting_level--; - if (nesting_level == 0) - break; - } - - /* Pass old-style command substitution through verbatim. */ - if (c == '`') - { - si = i + 1; - t = string_extract (string, &si, "`", flags|SX_NOALLOC); - i = si + 1; - continue; - } - - /* Pass single-quoted and double-quoted strings through verbatim. */ - if (c == '\'' || c == '"') - { - si = i + 1; - i = (c == '\'') ? skip_single_quoted (string, slen, si) - : skip_double_quoted (string, slen, si); - continue; - } - - /* move past this character, which was not special. */ - ADVANCE_CHAR (string, slen, i); - } - - if (c == 0 && nesting_level) - { - if (no_longjmp_on_fatal_error == 0) - { - last_command_exit_value = EXECUTION_FAILURE; - report_error (_("bad substitution: no closing `%s' in %s"), closer, string); - exp_jump_to_top_level (DISCARD); - } - else - { - *sindex = i; - return (char *)NULL; - } - } - - si = i - *sindex - len_closer + 1; - if (flags & SX_NOALLOC) - result = (char *)NULL; - else - { - result = (char *)xmalloc (1 + si); - strncpy (result, string + *sindex, si); - result[si] = '\0'; - } - *sindex = i; - - return (result); -} - -/* Extract a parameter expansion expression within ${ and } from STRING. - Obey the Posix.2 rules for finding the ending `}': count braces while - skipping over enclosed quoted strings and command substitutions. - SINDEX is the address of an int describing the current offset in STRING; - it should point to just after the first `{' found. On exit, SINDEX - gets the position of the matching `}'. QUOTED is non-zero if this - occurs inside double quotes. */ -/* XXX -- this is very similar to extract_delimited_string -- XXX */ -static char * -extract_dollar_brace_string (string, sindex, quoted, flags) - char *string; - int *sindex, quoted, flags; -{ - register int i, c; - size_t slen; - int pass_character, nesting_level, si, dolbrace_state; - char *result, *t; - DECLARE_MBSTATE; - - pass_character = 0; - nesting_level = 1; - slen = strlen (string + *sindex) + *sindex; - - /* The handling of dolbrace_state needs to agree with the code in parse.y: - parse_matched_pair(). The different initial value is to handle the - case where this function is called to parse the word in - ${param op word} (SX_WORD). */ - dolbrace_state = (flags & SX_WORD) ? DOLBRACE_WORD : DOLBRACE_PARAM; - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && (flags & SX_POSIXEXP)) - dolbrace_state = DOLBRACE_QUOTE; - - i = *sindex; - while (c = string[i]) - { - if (pass_character) - { - pass_character = 0; - ADVANCE_CHAR (string, slen, i); - continue; - } - - /* CTLESCs and backslashes quote the next character. */ - if (c == CTLESC || c == '\\') - { - pass_character++; - i++; - continue; - } - - if (string[i] == '$' && string[i+1] == LBRACE) - { - nesting_level++; - i += 2; - continue; - } - - if (c == RBRACE) - { - nesting_level--; - if (nesting_level == 0) - break; - i++; - continue; - } - - /* Pass the contents of old-style command substitutions through - verbatim. */ - if (c == '`') - { - si = i + 1; - t = string_extract (string, &si, "`", flags|SX_NOALLOC); - i = si + 1; - continue; - } - - /* Pass the contents of new-style command substitutions and - arithmetic substitutions through verbatim. */ - if (string[i] == '$' && string[i+1] == LPAREN) - { - si = i + 2; - t = extract_command_subst (string, &si, flags|SX_NOALLOC); - i = si + 1; - continue; - } - -#if 0 - /* Pass the contents of single-quoted and double-quoted strings - through verbatim. */ - if (c == '\'' || c == '"') - { - si = i + 1; - i = (c == '\'') ? skip_single_quoted (string, slen, si) - : skip_double_quoted (string, slen, si); - /* skip_XXX_quoted leaves index one past close quote */ - continue; - } -#else /* XXX - bash-4.2 */ - /* Pass the contents of double-quoted strings through verbatim. */ - if (c == '"') - { - si = i + 1; - i = skip_double_quoted (string, slen, si); - /* skip_XXX_quoted leaves index one past close quote */ - continue; - } - - if (c == '\'') - { -/*itrace("extract_dollar_brace_string: c == single quote flags = %d quoted = %d dolbrace_state = %d", flags, quoted, dolbrace_state);*/ - if (posixly_correct && shell_compatibility_level > 41 && dolbrace_state != DOLBRACE_QUOTE && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))) - ADVANCE_CHAR (string, slen, i); - else - { - si = i + 1; - i = skip_single_quoted (string, slen, si); - } - - continue; - } -#endif - - /* move past this character, which was not special. */ - ADVANCE_CHAR (string, slen, i); - - /* This logic must agree with parse.y:parse_matched_pair, since they - share the same defines. */ - if (dolbrace_state == DOLBRACE_PARAM && c == '%' && (i - *sindex) > 1) - dolbrace_state = DOLBRACE_QUOTE; - else if (dolbrace_state == DOLBRACE_PARAM && c == '#' && (i - *sindex) > 1) - dolbrace_state = DOLBRACE_QUOTE; - else if (dolbrace_state == DOLBRACE_PARAM && c == '/' && (i - *sindex) > 1) - dolbrace_state = DOLBRACE_QUOTE; - else if (dolbrace_state == DOLBRACE_PARAM && c == '^' && (i - *sindex) > 1) - dolbrace_state = DOLBRACE_QUOTE; - else if (dolbrace_state == DOLBRACE_PARAM && c == ',' && (i - *sindex) > 1) - dolbrace_state = DOLBRACE_QUOTE; - else if (dolbrace_state == DOLBRACE_PARAM && strchr ("#%^,~:-=?+/", c) != 0) - dolbrace_state = DOLBRACE_OP; - else if (dolbrace_state == DOLBRACE_OP && strchr ("#%^,~:-=?+/", c) == 0) - dolbrace_state = DOLBRACE_WORD; - } - - if (c == 0 && nesting_level) - { - if (no_longjmp_on_fatal_error == 0) - { /* { */ - last_command_exit_value = EXECUTION_FAILURE; - report_error (_("bad substitution: no closing `%s' in %s"), "}", string); - exp_jump_to_top_level (DISCARD); - } - else - { - *sindex = i; - return ((char *)NULL); - } - } - - result = (flags & SX_NOALLOC) ? (char *)NULL : substring (string, *sindex, i); - *sindex = i; - - return (result); -} - -/* Remove backslashes which are quoting backquotes from STRING. Modifies - STRING, and returns a pointer to it. */ -char * -de_backslash (string) - char *string; -{ - register size_t slen; - register int i, j, prev_i; - DECLARE_MBSTATE; - - slen = strlen (string); - i = j = 0; - - /* Loop copying string[i] to string[j], i >= j. */ - while (i < slen) - { - if (string[i] == '\\' && (string[i + 1] == '`' || string[i + 1] == '\\' || - string[i + 1] == '$')) - i++; - prev_i = i; - ADVANCE_CHAR (string, slen, i); - if (j < prev_i) - do string[j++] = string[prev_i++]; while (prev_i < i); - else - j = i; - } - string[j] = '\0'; - - return (string); -} - -#if 0 -/*UNUSED*/ -/* Replace instances of \! in a string with !. */ -void -unquote_bang (string) - char *string; -{ - register int i, j; - register char *temp; - - temp = (char *)xmalloc (1 + strlen (string)); - - for (i = 0, j = 0; (temp[j] = string[i]); i++, j++) - { - if (string[i] == '\\' && string[i + 1] == '!') - { - temp[j] = '!'; - i++; - } - } - strcpy (string, temp); - free (temp); -} -#endif - -#define CQ_RETURN(x) do { no_longjmp_on_fatal_error = 0; return (x); } while (0) - -/* This function assumes s[i] == open; returns with s[ret] == close; used to - parse array subscripts. FLAGS & 1 means to not attempt to skip over - matched pairs of quotes or backquotes, or skip word expansions; it is - intended to be used after expansion has been performed and during final - assignment parsing (see arrayfunc.c:assign_compound_array_list()). */ -static int -skip_matched_pair (string, start, open, close, flags) - const char *string; - int start, open, close, flags; -{ - int i, pass_next, backq, si, c, count; - size_t slen; - char *temp, *ss; - DECLARE_MBSTATE; - - slen = strlen (string + start) + start; - no_longjmp_on_fatal_error = 1; - - i = start + 1; /* skip over leading bracket */ - count = 1; - pass_next = backq = 0; - ss = (char *)string; - while (c = string[i]) - { - if (pass_next) - { - pass_next = 0; - if (c == 0) - CQ_RETURN(i); - ADVANCE_CHAR (string, slen, i); - continue; - } - else if (c == '\\') - { - pass_next = 1; - i++; - continue; - } - else if (backq) - { - if (c == '`') - backq = 0; - ADVANCE_CHAR (string, slen, i); - continue; - } - else if ((flags & 1) == 0 && c == '`') - { - backq = 1; - i++; - continue; - } - else if ((flags & 1) == 0 && c == open) - { - count++; - i++; - continue; - } - else if (c == close) - { - count--; - if (count == 0) - break; - i++; - continue; - } - else if ((flags & 1) == 0 && (c == '\'' || c == '"')) - { - i = (c == '\'') ? skip_single_quoted (ss, slen, ++i) - : skip_double_quoted (ss, slen, ++i); - /* no increment, the skip functions increment past the closing quote. */ - } - else if ((flags&1) == 0 && c == '$' && (string[i+1] == LPAREN || string[i+1] == LBRACE)) - { - si = i + 2; - if (string[si] == '\0') - CQ_RETURN(si); - - if (string[i+1] == LPAREN) - temp = extract_delimited_string (ss, &si, "$(", "(", ")", SX_NOALLOC|SX_COMMAND); /* ) */ - else - temp = extract_dollar_brace_string (ss, &si, 0, SX_NOALLOC); - i = si; - if (string[i] == '\0') /* don't increment i past EOS in loop */ - break; - i++; - continue; - } - else - ADVANCE_CHAR (string, slen, i); - } - - CQ_RETURN(i); -} - -#if defined (ARRAY_VARS) -int -skipsubscript (string, start, flags) - const char *string; - int start, flags; -{ - return (skip_matched_pair (string, start, '[', ']', flags)); -} -#endif - -/* Skip characters in STRING until we find a character in DELIMS, and return - the index of that character. START is the index into string at which we - begin. This is similar in spirit to strpbrk, but it returns an index into - STRING and takes a starting index. This little piece of code knows quite - a lot of shell syntax. It's very similar to skip_double_quoted and other - functions of that ilk. */ -int -skip_to_delim (string, start, delims, flags) - char *string; - int start; - char *delims; - int flags; -{ - int i, pass_next, backq, si, c, invert, skipquote, skipcmd; - size_t slen; - char *temp, open[3]; - DECLARE_MBSTATE; - - slen = strlen (string + start) + start; - if (flags & SD_NOJMP) - no_longjmp_on_fatal_error = 1; - invert = (flags & SD_INVERT); - skipcmd = (flags & SD_NOSKIPCMD) == 0; - - i = start; - pass_next = backq = 0; - while (c = string[i]) - { - /* If this is non-zero, we should not let quote characters be delimiters - and the current character is a single or double quote. We should not - test whether or not it's a delimiter until after we skip single- or - double-quoted strings. */ - skipquote = ((flags & SD_NOQUOTEDELIM) && (c == '\'' || c =='"')); - if (pass_next) - { - pass_next = 0; - if (c == 0) - CQ_RETURN(i); - ADVANCE_CHAR (string, slen, i); - continue; - } - else if (c == '\\') - { - pass_next = 1; - i++; - continue; - } - else if (backq) - { - if (c == '`') - backq = 0; - ADVANCE_CHAR (string, slen, i); - continue; - } - else if (c == '`') - { - backq = 1; - i++; - continue; - } - else if (skipquote == 0 && invert == 0 && member (c, delims)) - break; - else if (c == '\'' || c == '"') - { - i = (c == '\'') ? skip_single_quoted (string, slen, ++i) - : skip_double_quoted (string, slen, ++i); - /* no increment, the skip functions increment past the closing quote. */ - } - else if (c == '$' && ((skipcmd && string[i+1] == LPAREN) || string[i+1] == LBRACE)) - { - si = i + 2; - if (string[si] == '\0') - CQ_RETURN(si); - - if (string[i+1] == LPAREN) - temp = extract_delimited_string (string, &si, "$(", "(", ")", SX_NOALLOC|SX_COMMAND); /* ) */ - else - temp = extract_dollar_brace_string (string, &si, 0, SX_NOALLOC); - i = si; - if (string[i] == '\0') /* don't increment i past EOS in loop */ - break; - i++; - continue; - } -#if defined (PROCESS_SUBSTITUTION) - else if (skipcmd && (c == '<' || c == '>') && string[i+1] == LPAREN) - { - si = i + 2; - if (string[si] == '\0') - CQ_RETURN(si); - temp = extract_process_subst (string, (c == '<') ? "<(" : ">(", &si); - free (temp); /* no SX_ALLOC here */ - i = si; - if (string[i] == '\0') - break; - i++; - continue; - } -#endif /* PROCESS_SUBSTITUTION */ -#if defined (EXTENDED_GLOB) - else if ((flags & SD_EXTGLOB) && extended_glob && string[i+1] == LPAREN && member (c, "?*+!@")) - { - si = i + 2; - if (string[si] == '\0') - CQ_RETURN(si); - - open[0] = c; - open[1] = LPAREN; - open[2] = '\0'; - temp = extract_delimited_string (string, &si, open, "(", ")", SX_NOALLOC); /* ) */ - - i = si; - if (string[i] == '\0') /* don't increment i past EOS in loop */ - break; - i++; - continue; - } -#endif - else if ((skipquote || invert) && (member (c, delims) == 0)) - break; - else - ADVANCE_CHAR (string, slen, i); - } - - CQ_RETURN(i); -} - -#if defined (READLINE) -/* Return 1 if the portion of STRING ending at EINDEX is quoted (there is - an unclosed quoted string), or if the character at EINDEX is quoted - by a backslash. NO_LONGJMP_ON_FATAL_ERROR is used to flag that the various - single and double-quoted string parsing functions should not return an - error if there are unclosed quotes or braces. The characters that this - recognizes need to be the same as the contents of - rl_completer_quote_characters. */ - -int -char_is_quoted (string, eindex) - char *string; - int eindex; -{ - int i, pass_next, c; - size_t slen; - DECLARE_MBSTATE; - - slen = strlen (string); - no_longjmp_on_fatal_error = 1; - i = pass_next = 0; - while (i <= eindex) - { - c = string[i]; - - if (pass_next) - { - pass_next = 0; - if (i >= eindex) /* XXX was if (i >= eindex - 1) */ - CQ_RETURN(1); - ADVANCE_CHAR (string, slen, i); - continue; - } - else if (c == '\\') - { - pass_next = 1; - i++; - continue; - } - else if (c == '\'' || c == '"') - { - i = (c == '\'') ? skip_single_quoted (string, slen, ++i) - : skip_double_quoted (string, slen, ++i); - if (i > eindex) - CQ_RETURN(1); - /* no increment, the skip_xxx functions go one past end */ - } - else - ADVANCE_CHAR (string, slen, i); - } - - CQ_RETURN(0); -} - -int -unclosed_pair (string, eindex, openstr) - char *string; - int eindex; - char *openstr; -{ - int i, pass_next, openc, olen; - size_t slen; - DECLARE_MBSTATE; - - slen = strlen (string); - olen = strlen (openstr); - i = pass_next = openc = 0; - while (i <= eindex) - { - if (pass_next) - { - pass_next = 0; - if (i >= eindex) /* XXX was if (i >= eindex - 1) */ - return 0; - ADVANCE_CHAR (string, slen, i); - continue; - } - else if (string[i] == '\\') - { - pass_next = 1; - i++; - continue; - } - else if (STREQN (string + i, openstr, olen)) - { - openc = 1 - openc; - i += olen; - } - else if (string[i] == '\'' || string[i] == '"') - { - i = (string[i] == '\'') ? skip_single_quoted (string, slen, i) - : skip_double_quoted (string, slen, i); - if (i > eindex) - return 0; - } - else - ADVANCE_CHAR (string, slen, i); - } - return (openc); -} - -/* Split STRING (length SLEN) at DELIMS, and return a WORD_LIST with the - individual words. If DELIMS is NULL, the current value of $IFS is used - to split the string, and the function follows the shell field splitting - rules. SENTINEL is an index to look for. NWP, if non-NULL, - gets the number of words in the returned list. CWP, if non-NULL, gets - the index of the word containing SENTINEL. Non-whitespace chars in - DELIMS delimit separate fields. */ -WORD_LIST * -split_at_delims (string, slen, delims, sentinel, flags, nwp, cwp) - char *string; - int slen; - char *delims; - int sentinel, flags; - int *nwp, *cwp; -{ - int ts, te, i, nw, cw, ifs_split, dflags; - char *token, *d, *d2; - WORD_LIST *ret, *tl; - - if (string == 0 || *string == '\0') - { - if (nwp) - *nwp = 0; - if (cwp) - *cwp = 0; - return ((WORD_LIST *)NULL); - } - - d = (delims == 0) ? ifs_value : delims; - ifs_split = delims == 0; - - /* Make d2 the non-whitespace characters in delims */ - d2 = 0; - if (delims) - { - size_t slength; -#if defined (HANDLE_MULTIBYTE) - size_t mblength = 1; -#endif - DECLARE_MBSTATE; - - slength = strlen (delims); - d2 = (char *)xmalloc (slength + 1); - i = ts = 0; - while (delims[i]) - { -#if defined (HANDLE_MULTIBYTE) - mbstate_t state_bak; - state_bak = state; - mblength = MBRLEN (delims + i, slength, &state); - if (MB_INVALIDCH (mblength)) - state = state_bak; - else if (mblength > 1) - { - memcpy (d2 + ts, delims + i, mblength); - ts += mblength; - i += mblength; - slength -= mblength; - continue; - } -#endif - if (whitespace (delims[i]) == 0) - d2[ts++] = delims[i]; - - i++; - slength--; - } - d2[ts] = '\0'; - } - - ret = (WORD_LIST *)NULL; - - /* Remove sequences of whitespace characters at the start of the string, as - long as those characters are delimiters. */ - for (i = 0; member (string[i], d) && spctabnl (string[i]); i++) - ; - if (string[i] == '\0') - return (ret); - - ts = i; - nw = 0; - cw = -1; - dflags = flags|SD_NOJMP; - while (1) - { - te = skip_to_delim (string, ts, d, dflags); - - /* If we have a non-whitespace delimiter character, use it to make a - separate field. This is just about what $IFS splitting does and - is closer to the behavior of the shell parser. */ - if (ts == te && d2 && member (string[ts], d2)) - { - te = ts + 1; - /* If we're using IFS splitting, the non-whitespace delimiter char - and any additional IFS whitespace delimits a field. */ - if (ifs_split) - while (member (string[te], d) && spctabnl (string[te])) - te++; - else - while (member (string[te], d2)) - te++; - } - - token = substring (string, ts, te); - - ret = add_string_to_list (token, ret); - free (token); - nw++; - - if (sentinel >= ts && sentinel <= te) - cw = nw; - - /* If the cursor is at whitespace just before word start, set the - sentinel word to the current word. */ - if (cwp && cw == -1 && sentinel == ts-1) - cw = nw; - - /* If the cursor is at whitespace between two words, make a new, empty - word, add it before (well, after, since the list is in reverse order) - the word we just added, and set the current word to that one. */ - if (cwp && cw == -1 && sentinel < ts) - { - tl = make_word_list (make_word (""), ret->next); - ret->next = tl; - cw = nw; - nw++; - } - - if (string[te] == 0) - break; - - i = te; - while (member (string[i], d) && (ifs_split || spctabnl(string[i]))) - i++; - - if (string[i]) - ts = i; - else - break; - } - - /* Special case for SENTINEL at the end of STRING. If we haven't found - the word containing SENTINEL yet, and the index we're looking for is at - the end of STRING (or past the end of the previously-found token, - possible if the end of the line is composed solely of IFS whitespace) - add an additional null argument and set the current word pointer to that. */ - if (cwp && cw == -1 && (sentinel >= slen || sentinel >= te)) - { - if (whitespace (string[sentinel - 1])) - { - token = ""; - ret = add_string_to_list (token, ret); - nw++; - } - cw = nw; - } - - if (nwp) - *nwp = nw; - if (cwp) - *cwp = cw; - - FREE (d2); - - return (REVERSE_LIST (ret, WORD_LIST *)); -} -#endif /* READLINE */ - -#if 0 -/* UNUSED */ -/* Extract the name of the variable to bind to from the assignment string. */ -char * -assignment_name (string) - char *string; -{ - int offset; - char *temp; - - offset = assignment (string, 0); - if (offset == 0) - return (char *)NULL; - temp = substring (string, 0, offset); - return (temp); -} -#endif - -/* **************************************************************** */ -/* */ -/* Functions to convert strings to WORD_LISTs and vice versa */ -/* */ -/* **************************************************************** */ - -/* Return a single string of all the words in LIST. SEP is the separator - to put between individual elements of LIST in the output string. */ -char * -string_list_internal (list, sep) - WORD_LIST *list; - char *sep; -{ - register WORD_LIST *t; - char *result, *r; - int word_len, sep_len, result_size; - - if (list == 0) - return ((char *)NULL); - - /* Short-circuit quickly if we don't need to separate anything. */ - if (list->next == 0) - return (savestring (list->word->word)); - - /* This is nearly always called with either sep[0] == 0 or sep[1] == 0. */ - sep_len = STRLEN (sep); - result_size = 0; - - for (t = list; t; t = t->next) - { - if (t != list) - result_size += sep_len; - result_size += strlen (t->word->word); - } - - r = result = (char *)xmalloc (result_size + 1); - - for (t = list; t; t = t->next) - { - if (t != list && sep_len) - { - if (sep_len > 1) - { - FASTCOPY (sep, r, sep_len); - r += sep_len; - } - else - *r++ = sep[0]; - } - - word_len = strlen (t->word->word); - FASTCOPY (t->word->word, r, word_len); - r += word_len; - } - - *r = '\0'; - return (result); -} - -/* Return a single string of all the words present in LIST, separating - each word with a space. */ -char * -string_list (list) - WORD_LIST *list; -{ - return (string_list_internal (list, " ")); -} - -/* An external interface that can be used by the rest of the shell to - obtain a string containing the first character in $IFS. Handles all - the multibyte complications. If LENP is non-null, it is set to the - length of the returned string. */ -char * -ifs_firstchar (lenp) - int *lenp; -{ - char *ret; - int len; - - ret = xmalloc (MB_LEN_MAX + 1); -#if defined (HANDLE_MULTIBYTE) - if (ifs_firstc_len == 1) - { - ret[0] = ifs_firstc[0]; - ret[1] = '\0'; - len = ret[0] ? 1 : 0; - } - else - { - memcpy (ret, ifs_firstc, ifs_firstc_len); - ret[len = ifs_firstc_len] = '\0'; - } -#else - ret[0] = ifs_firstc; - ret[1] = '\0'; - len = ret[0] ? 0 : 1; -#endif - - if (lenp) - *lenp = len; - - return ret; -} - -/* Return a single string of all the words present in LIST, obeying the - quoting rules for "$*", to wit: (P1003.2, draft 11, 3.5.2) "If the - expansion [of $*] appears within a double quoted string, it expands - to a single field with the value of each parameter separated by the - first character of the IFS variable, or by a if IFS is unset." */ -char * -string_list_dollar_star (list) - WORD_LIST *list; -{ - char *ret; -#if defined (HANDLE_MULTIBYTE) -# if defined (__GNUC__) - char sep[MB_CUR_MAX + 1]; -# else - char *sep = 0; -# endif -#else - char sep[2]; -#endif - -#if defined (HANDLE_MULTIBYTE) -# if !defined (__GNUC__) - sep = (char *)xmalloc (MB_CUR_MAX + 1); -# endif /* !__GNUC__ */ - if (ifs_firstc_len == 1) - { - sep[0] = ifs_firstc[0]; - sep[1] = '\0'; - } - else - { - memcpy (sep, ifs_firstc, ifs_firstc_len); - sep[ifs_firstc_len] = '\0'; - } -#else - sep[0] = ifs_firstc; - sep[1] = '\0'; -#endif - - ret = string_list_internal (list, sep); -#if defined (HANDLE_MULTIBYTE) && !defined (__GNUC__) - free (sep); -#endif - return ret; -} - -/* Turn $@ into a string. If (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) - is non-zero, the $@ appears within double quotes, and we should quote - the list before converting it into a string. If IFS is unset, and the - word is not quoted, we just need to quote CTLESC and CTLNUL characters - in the words in the list, because the default value of $IFS is - , IFS characters in the words in the list should - also be split. If IFS is null, and the word is not quoted, we need - to quote the words in the list to preserve the positional parameters - exactly. */ -char * -string_list_dollar_at (list, quoted) - WORD_LIST *list; - int quoted; -{ - char *ifs, *ret; -#if defined (HANDLE_MULTIBYTE) -# if defined (__GNUC__) - char sep[MB_CUR_MAX + 1]; -# else - char *sep = 0; -# endif /* !__GNUC__ */ -#else - char sep[2]; -#endif - WORD_LIST *tlist; - - /* XXX this could just be ifs = ifs_value; */ - ifs = ifs_var ? value_cell (ifs_var) : (char *)0; - -#if defined (HANDLE_MULTIBYTE) -# if !defined (__GNUC__) - sep = (char *)xmalloc (MB_CUR_MAX + 1); -# endif /* !__GNUC__ */ - if (ifs && *ifs) - { - if (ifs_firstc_len == 1) - { - sep[0] = ifs_firstc[0]; - sep[1] = '\0'; - } - else - { - memcpy (sep, ifs_firstc, ifs_firstc_len); - sep[ifs_firstc_len] = '\0'; - } - } - else - { - sep[0] = ' '; - sep[1] = '\0'; - } -#else - sep[0] = (ifs == 0 || *ifs == 0) ? ' ' : *ifs; - sep[1] = '\0'; -#endif - - /* XXX -- why call quote_list if ifs == 0? we can get away without doing - it now that quote_escapes quotes spaces */ - tlist = (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES|Q_PATQUOTE)) - ? quote_list (list) - : list_quote_escapes (list); - - ret = string_list_internal (tlist, sep); -#if defined (HANDLE_MULTIBYTE) && !defined (__GNUC__) - free (sep); -#endif - return ret; -} - -/* Turn the positional paramters into a string, understanding quoting and - the various subtleties of using the first character of $IFS as the - separator. Calls string_list_dollar_at, string_list_dollar_star, and - string_list as appropriate. */ -char * -string_list_pos_params (pchar, list, quoted) - int pchar; - WORD_LIST *list; - int quoted; -{ - char *ret; - WORD_LIST *tlist; - - if (pchar == '*' && (quoted & Q_DOUBLE_QUOTES)) - { - tlist = quote_list (list); - word_list_remove_quoted_nulls (tlist); - ret = string_list_dollar_star (tlist); - } - else if (pchar == '*' && (quoted & Q_HERE_DOCUMENT)) - { - tlist = quote_list (list); - word_list_remove_quoted_nulls (tlist); - ret = string_list (tlist); - } - else if (pchar == '*') - { - /* Even when unquoted, string_list_dollar_star does the right thing - making sure that the first character of $IFS is used as the - separator. */ - ret = string_list_dollar_star (list); - } - else if (pchar == '@' && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))) - /* We use string_list_dollar_at, but only if the string is quoted, since - that quotes the escapes if it's not, which we don't want. We could - use string_list (the old code did), but that doesn't do the right - thing if the first character of $IFS is not a space. We use - string_list_dollar_star if the string is unquoted so we make sure that - the elements of $@ are separated by the first character of $IFS for - later splitting. */ - ret = string_list_dollar_at (list, quoted); - else if (pchar == '@') - ret = string_list_dollar_star (list); - else - ret = string_list ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) ? quote_list (list) : list); - - return ret; -} - -/* Return the list of words present in STRING. Separate the string into - words at any of the characters found in SEPARATORS. If QUOTED is - non-zero then word in the list will have its quoted flag set, otherwise - the quoted flag is left as make_word () deemed fit. - - This obeys the P1003.2 word splitting semantics. If `separators' is - exactly , then the splitting algorithm is that of - the Bourne shell, which treats any sequence of characters from `separators' - as a delimiter. If IFS is unset, which results in `separators' being set - to "", no splitting occurs. If separators has some other value, the - following rules are applied (`IFS white space' means zero or more - occurrences of , , or , as long as those characters - are in `separators'): - - 1) IFS white space is ignored at the start and the end of the - string. - 2) Each occurrence of a character in `separators' that is not - IFS white space, along with any adjacent occurrences of - IFS white space delimits a field. - 3) Any nonzero-length sequence of IFS white space delimits a field. - */ - -/* BEWARE! list_string strips null arguments. Don't call it twice and - expect to have "" preserved! */ - -/* This performs word splitting and quoted null character removal on - STRING. */ -#define issep(c) \ - (((separators)[0]) ? ((separators)[1] ? isifs(c) \ - : (c) == (separators)[0]) \ - : 0) - -WORD_LIST * -list_string (string, separators, quoted) - register char *string, *separators; - int quoted; -{ - WORD_LIST *result; - WORD_DESC *t; - char *current_word, *s; - int sindex, sh_style_split, whitesep, xflags; - size_t slen; - - if (!string || !*string) - return ((WORD_LIST *)NULL); - - sh_style_split = separators && separators[0] == ' ' && - separators[1] == '\t' && - separators[2] == '\n' && - separators[3] == '\0'; - for (xflags = 0, s = ifs_value; s && *s; s++) - { - if (*s == CTLESC) xflags |= SX_NOCTLESC; - else if (*s == CTLNUL) xflags |= SX_NOESCCTLNUL; - } - - slen = 0; - /* Remove sequences of whitespace at the beginning of STRING, as - long as those characters appear in IFS. Do not do this if - STRING is quoted or if there are no separator characters. */ - if (!quoted || !separators || !*separators) - { - for (s = string; *s && spctabnl (*s) && issep (*s); s++); - - if (!*s) - return ((WORD_LIST *)NULL); - - string = s; - } - - /* OK, now STRING points to a word that does not begin with white space. - The splitting algorithm is: - extract a word, stopping at a separator - skip sequences of spc, tab, or nl as long as they are separators - This obeys the field splitting rules in Posix.2. */ - slen = (MB_CUR_MAX > 1) ? strlen (string) : 1; - for (result = (WORD_LIST *)NULL, sindex = 0; string[sindex]; ) - { - /* Don't need string length in ADVANCE_CHAR or string_extract_verbatim - unless multibyte chars are possible. */ - current_word = string_extract_verbatim (string, slen, &sindex, separators, xflags); - if (current_word == 0) - break; - - /* If we have a quoted empty string, add a quoted null argument. We - want to preserve the quoted null character iff this is a quoted - empty string; otherwise the quoted null characters are removed - below. */ - if (QUOTED_NULL (current_word)) - { - t = alloc_word_desc (); - t->word = make_quoted_char ('\0'); - t->flags |= W_QUOTED|W_HASQUOTEDNULL; - result = make_word_list (t, result); - } - else if (current_word[0] != '\0') - { - /* If we have something, then add it regardless. However, - perform quoted null character removal on the current word. */ - remove_quoted_nulls (current_word); - result = add_string_to_list (current_word, result); - result->word->flags &= ~W_HASQUOTEDNULL; /* just to be sure */ - if (quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT)) - result->word->flags |= W_QUOTED; - } - - /* If we're not doing sequences of separators in the traditional - Bourne shell style, then add a quoted null argument. */ - else if (!sh_style_split && !spctabnl (string[sindex])) - { - t = alloc_word_desc (); - t->word = make_quoted_char ('\0'); - t->flags |= W_QUOTED|W_HASQUOTEDNULL; - result = make_word_list (t, result); - } - - free (current_word); - - /* Note whether or not the separator is IFS whitespace, used later. */ - whitesep = string[sindex] && spctabnl (string[sindex]); - - /* Move past the current separator character. */ - if (string[sindex]) - { - DECLARE_MBSTATE; - ADVANCE_CHAR (string, slen, sindex); - } - - /* Now skip sequences of space, tab, or newline characters if they are - in the list of separators. */ - while (string[sindex] && spctabnl (string[sindex]) && issep (string[sindex])) - sindex++; - - /* If the first separator was IFS whitespace and the current character - is a non-whitespace IFS character, it should be part of the current - field delimiter, not a separate delimiter that would result in an - empty field. Look at POSIX.2, 3.6.5, (3)(b). */ - if (string[sindex] && whitesep && issep (string[sindex]) && !spctabnl (string[sindex])) - { - sindex++; - /* An IFS character that is not IFS white space, along with any - adjacent IFS white space, shall delimit a field. (SUSv3) */ - while (string[sindex] && spctabnl (string[sindex]) && isifs (string[sindex])) - sindex++; - } - } - return (REVERSE_LIST (result, WORD_LIST *)); -} - -/* Parse a single word from STRING, using SEPARATORS to separate fields. - ENDPTR is set to the first character after the word. This is used by - the `read' builtin. This is never called with SEPARATORS != $IFS; - it should be simplified. - - XXX - this function is very similar to list_string; they should be - combined - XXX */ -char * -get_word_from_string (stringp, separators, endptr) - char **stringp, *separators, **endptr; -{ - register char *s; - char *current_word; - int sindex, sh_style_split, whitesep, xflags; - size_t slen; - - if (!stringp || !*stringp || !**stringp) - return ((char *)NULL); - - sh_style_split = separators && separators[0] == ' ' && - separators[1] == '\t' && - separators[2] == '\n' && - separators[3] == '\0'; - for (xflags = 0, s = ifs_value; s && *s; s++) - { - if (*s == CTLESC) xflags |= SX_NOCTLESC; - if (*s == CTLNUL) xflags |= SX_NOESCCTLNUL; - } - - s = *stringp; - slen = 0; - - /* Remove sequences of whitespace at the beginning of STRING, as - long as those characters appear in IFS. */ - if (sh_style_split || !separators || !*separators) - { - for (; *s && spctabnl (*s) && isifs (*s); s++); - - /* If the string is nothing but whitespace, update it and return. */ - if (!*s) - { - *stringp = s; - if (endptr) - *endptr = s; - return ((char *)NULL); - } - } - - /* OK, S points to a word that does not begin with white space. - Now extract a word, stopping at a separator, save a pointer to - the first character after the word, then skip sequences of spc, - tab, or nl as long as they are separators. - - This obeys the field splitting rules in Posix.2. */ - sindex = 0; - /* Don't need string length in ADVANCE_CHAR or string_extract_verbatim - unless multibyte chars are possible. */ - slen = (MB_CUR_MAX > 1) ? strlen (s) : 1; - current_word = string_extract_verbatim (s, slen, &sindex, separators, xflags); - - /* Set ENDPTR to the first character after the end of the word. */ - if (endptr) - *endptr = s + sindex; - - /* Note whether or not the separator is IFS whitespace, used later. */ - whitesep = s[sindex] && spctabnl (s[sindex]); - - /* Move past the current separator character. */ - if (s[sindex]) - { - DECLARE_MBSTATE; - ADVANCE_CHAR (s, slen, sindex); - } - - /* Now skip sequences of space, tab, or newline characters if they are - in the list of separators. */ - while (s[sindex] && spctabnl (s[sindex]) && isifs (s[sindex])) - sindex++; - - /* If the first separator was IFS whitespace and the current character is - a non-whitespace IFS character, it should be part of the current field - delimiter, not a separate delimiter that would result in an empty field. - Look at POSIX.2, 3.6.5, (3)(b). */ - if (s[sindex] && whitesep && isifs (s[sindex]) && !spctabnl (s[sindex])) - { - sindex++; - /* An IFS character that is not IFS white space, along with any adjacent - IFS white space, shall delimit a field. */ - while (s[sindex] && spctabnl (s[sindex]) && isifs (s[sindex])) - sindex++; - } - - /* Update STRING to point to the next field. */ - *stringp = s + sindex; - return (current_word); -} - -/* Remove IFS white space at the end of STRING. Start at the end - of the string and walk backwards until the beginning of the string - or we find a character that's not IFS white space and not CTLESC. - Only let CTLESC escape a white space character if SAW_ESCAPE is - non-zero. */ -char * -strip_trailing_ifs_whitespace (string, separators, saw_escape) - char *string, *separators; - int saw_escape; -{ - char *s; - - s = string + STRLEN (string) - 1; - while (s > string && ((spctabnl (*s) && isifs (*s)) || - (saw_escape && *s == CTLESC && spctabnl (s[1])))) - s--; - *++s = '\0'; - return string; -} - -#if 0 -/* UNUSED */ -/* Split STRING into words at whitespace. Obeys shell-style quoting with - backslashes, single and double quotes. */ -WORD_LIST * -list_string_with_quotes (string) - char *string; -{ - WORD_LIST *list; - char *token, *s; - size_t s_len; - int c, i, tokstart, len; - - for (s = string; s && *s && spctabnl (*s); s++) - ; - if (s == 0 || *s == 0) - return ((WORD_LIST *)NULL); - - s_len = strlen (s); - tokstart = i = 0; - list = (WORD_LIST *)NULL; - while (1) - { - c = s[i]; - if (c == '\\') - { - i++; - if (s[i]) - i++; - } - else if (c == '\'') - i = skip_single_quoted (s, s_len, ++i); - else if (c == '"') - i = skip_double_quoted (s, s_len, ++i); - else if (c == 0 || spctabnl (c)) - { - /* We have found the end of a token. Make a word out of it and - add it to the word list. */ - token = substring (s, tokstart, i); - list = add_string_to_list (token, list); - free (token); - while (spctabnl (s[i])) - i++; - if (s[i]) - tokstart = i; - else - break; - } - else - i++; /* normal character */ - } - return (REVERSE_LIST (list, WORD_LIST *)); -} -#endif - -/********************************************************/ -/* */ -/* Functions to perform assignment statements */ -/* */ -/********************************************************/ - -#if defined (ARRAY_VARS) -static SHELL_VAR * -do_compound_assignment (name, value, flags) - char *name, *value; - int flags; -{ - SHELL_VAR *v; - int mklocal, mkassoc; - WORD_LIST *list; - - mklocal = flags & ASS_MKLOCAL; - mkassoc = flags & ASS_MKASSOC; - - if (mklocal && variable_context) - { - v = find_variable (name); - list = expand_compound_array_assignment (v, value, flags); - if (mkassoc) - v = make_local_assoc_variable (name); - else if (v == 0 || (array_p (v) == 0 && assoc_p (v) == 0) || v->context != variable_context) - v = make_local_array_variable (name, 0); - assign_compound_array_list (v, list, flags); - } - else - v = assign_array_from_string (name, value, flags); - - return (v); -} -#endif - -/* Given STRING, an assignment string, get the value of the right side - of the `=', and bind it to the left side. If EXPAND is true, then - perform parameter expansion, command substitution, and arithmetic - expansion on the right-hand side. Perform tilde expansion in any - case. Do not perform word splitting on the result of expansion. */ -static int -do_assignment_internal (word, expand) - const WORD_DESC *word; - int expand; -{ - int offset, appendop, assign_list, aflags, retval; - char *name, *value, *temp; - SHELL_VAR *entry; -#if defined (ARRAY_VARS) - char *t; - int ni; -#endif - const char *string; - - if (word == 0 || word->word == 0) - return 0; - - appendop = assign_list = aflags = 0; - string = word->word; - offset = assignment (string, 0); - name = savestring (string); - value = (char *)NULL; - - if (name[offset] == '=') - { - if (name[offset - 1] == '+') - { - appendop = 1; - name[offset - 1] = '\0'; - } - - name[offset] = 0; /* might need this set later */ - temp = name + offset + 1; - -#if defined (ARRAY_VARS) - if (expand && (word->flags & W_COMPASSIGN)) - { - assign_list = ni = 1; - value = extract_array_assignment_list (temp, &ni); - } - else -#endif - if (expand && temp[0]) - value = expand_string_if_necessary (temp, 0, expand_string_assignment); - else - value = savestring (temp); - } - - if (value == 0) - { - value = (char *)xmalloc (1); - value[0] = '\0'; - } - - if (echo_command_at_execute) - { - if (appendop) - name[offset - 1] = '+'; - xtrace_print_assignment (name, value, assign_list, 1); - if (appendop) - name[offset - 1] = '\0'; - } - -#define ASSIGN_RETURN(r) do { FREE (value); free (name); return (r); } while (0) - - if (appendop) - aflags |= ASS_APPEND; - -#if defined (ARRAY_VARS) - if (t = mbschr (name, '[')) /*]*/ - { - if (assign_list) - { - report_error (_("%s: cannot assign list to array member"), name); - ASSIGN_RETURN (0); - } - entry = assign_array_element (name, value, aflags); - if (entry == 0) - ASSIGN_RETURN (0); - } - else if (assign_list) - { - if (word->flags & W_ASSIGNARG) - aflags |= ASS_MKLOCAL; - if (word->flags & W_ASSIGNASSOC) - aflags |= ASS_MKASSOC; - entry = do_compound_assignment (name, value, aflags); - } - else -#endif /* ARRAY_VARS */ - entry = bind_variable (name, value, aflags); - - stupidly_hack_special_variables (name); - -#if 1 - /* Return 1 if the assignment seems to have been performed correctly. */ - if (entry == 0 || readonly_p (entry)) - retval = 0; /* assignment failure */ - else if (noassign_p (entry)) - { - last_command_exit_value = EXECUTION_FAILURE; - retval = 1; /* error status, but not assignment failure */ - } - else - retval = 1; - - if (entry && retval != 0 && noassign_p (entry) == 0) - VUNSETATTR (entry, att_invisible); - - ASSIGN_RETURN (retval); -#else - if (entry) - VUNSETATTR (entry, att_invisible); - - ASSIGN_RETURN (entry ? ((readonly_p (entry) == 0) && noassign_p (entry) == 0) : 0); -#endif -} - -/* Perform the assignment statement in STRING, and expand the - right side by doing tilde, command and parameter expansion. */ -int -do_assignment (string) - char *string; -{ - WORD_DESC td; - - td.flags = W_ASSIGNMENT; - td.word = string; - - return do_assignment_internal (&td, 1); -} - -int -do_word_assignment (word, flags) - WORD_DESC *word; - int flags; -{ - return do_assignment_internal (word, 1); -} - -/* Given STRING, an assignment string, get the value of the right side - of the `=', and bind it to the left side. Do not perform any word - expansions on the right hand side. */ -int -do_assignment_no_expand (string) - char *string; -{ - WORD_DESC td; - - td.flags = W_ASSIGNMENT; - td.word = string; - - return (do_assignment_internal (&td, 0)); -} - -/*************************************************** - * * - * Functions to manage the positional parameters * - * * - ***************************************************/ - -/* Return the word list that corresponds to `$*'. */ -WORD_LIST * -list_rest_of_args () -{ - register WORD_LIST *list, *args; - int i; - - /* Break out of the loop as soon as one of the dollar variables is null. */ - for (i = 1, list = (WORD_LIST *)NULL; i < 10 && dollar_vars[i]; i++) - list = make_word_list (make_bare_word (dollar_vars[i]), list); - - for (args = rest_of_args; args; args = args->next) - list = make_word_list (make_bare_word (args->word->word), list); - - return (REVERSE_LIST (list, WORD_LIST *)); -} - -int -number_of_args () -{ - register WORD_LIST *list; - int n; - - for (n = 0; n < 9 && dollar_vars[n+1]; n++) - ; - for (list = rest_of_args; list; list = list->next) - n++; - return n; -} - -/* Return the value of a positional parameter. This handles values > 10. */ -char * -get_dollar_var_value (ind) - intmax_t ind; -{ - char *temp; - WORD_LIST *p; - - if (ind < 10) - temp = dollar_vars[ind] ? savestring (dollar_vars[ind]) : (char *)NULL; - else /* We want something like ${11} */ - { - ind -= 10; - for (p = rest_of_args; p && ind--; p = p->next) - ; - temp = p ? savestring (p->word->word) : (char *)NULL; - } - return (temp); -} - -/* Make a single large string out of the dollar digit variables, - and the rest_of_args. If DOLLAR_STAR is 1, then obey the special - case of "$*" with respect to IFS. */ -char * -string_rest_of_args (dollar_star) - int dollar_star; -{ - register WORD_LIST *list; - char *string; - - list = list_rest_of_args (); - string = dollar_star ? string_list_dollar_star (list) : string_list (list); - dispose_words (list); - return (string); -} - -/* Return a string containing the positional parameters from START to - END, inclusive. If STRING[0] == '*', we obey the rules for $*, - which only makes a difference if QUOTED is non-zero. If QUOTED includes - Q_HERE_DOCUMENT or Q_DOUBLE_QUOTES, this returns a quoted list, otherwise - no quoting chars are added. */ -static char * -pos_params (string, start, end, quoted) - char *string; - int start, end, quoted; -{ - WORD_LIST *save, *params, *h, *t; - char *ret; - int i; - - /* see if we can short-circuit. if start == end, we want 0 parameters. */ - if (start == end) - return ((char *)NULL); - - save = params = list_rest_of_args (); - if (save == 0) - return ((char *)NULL); - - if (start == 0) /* handle ${@:0[:x]} specially */ - { - t = make_word_list (make_word (dollar_vars[0]), params); - save = params = t; - } - - for (i = start ? 1 : 0; params && i < start; i++) - params = params->next; - if (params == 0) - return ((char *)NULL); - for (h = t = params; params && i < end; i++) - { - t = params; - params = params->next; - } - - t->next = (WORD_LIST *)NULL; - - ret = string_list_pos_params (string[0], h, quoted); - - if (t != params) - t->next = params; - - dispose_words (save); - return (ret); -} - -/******************************************************************/ -/* */ -/* Functions to expand strings to strings or WORD_LISTs */ -/* */ -/******************************************************************/ - -#if defined (PROCESS_SUBSTITUTION) -#define EXP_CHAR(s) (s == '$' || s == '`' || s == '<' || s == '>' || s == CTLESC || s == '~') -#else -#define EXP_CHAR(s) (s == '$' || s == '`' || s == CTLESC || s == '~') -#endif - -/* If there are any characters in STRING that require full expansion, - then call FUNC to expand STRING; otherwise just perform quote - removal if necessary. This returns a new string. */ -static char * -expand_string_if_necessary (string, quoted, func) - char *string; - int quoted; - EXPFUNC *func; -{ - WORD_LIST *list; - size_t slen; - int i, saw_quote; - char *ret; - DECLARE_MBSTATE; - - /* Don't need string length for ADVANCE_CHAR unless multibyte chars possible. */ - slen = (MB_CUR_MAX > 1) ? strlen (string) : 0; - i = saw_quote = 0; - while (string[i]) - { - if (EXP_CHAR (string[i])) - break; - else if (string[i] == '\'' || string[i] == '\\' || string[i] == '"') - saw_quote = 1; - ADVANCE_CHAR (string, slen, i); - } - - if (string[i]) - { - list = (*func) (string, quoted); - if (list) - { - ret = string_list (list); - dispose_words (list); - } - else - ret = (char *)NULL; - } - else if (saw_quote && ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) == 0)) - ret = string_quote_removal (string, quoted); - else - ret = savestring (string); - - return ret; -} - -static inline char * -expand_string_to_string_internal (string, quoted, func) - char *string; - int quoted; - EXPFUNC *func; -{ - WORD_LIST *list; - char *ret; - - if (string == 0 || *string == '\0') - return ((char *)NULL); - - list = (*func) (string, quoted); - if (list) - { - ret = string_list (list); - dispose_words (list); - } - else - ret = (char *)NULL; - - return (ret); -} - -char * -expand_string_to_string (string, quoted) - char *string; - int quoted; -{ - return (expand_string_to_string_internal (string, quoted, expand_string)); -} - -char * -expand_string_unsplit_to_string (string, quoted) - char *string; - int quoted; -{ - return (expand_string_to_string_internal (string, quoted, expand_string_unsplit)); -} - -char * -expand_assignment_string_to_string (string, quoted) - char *string; - int quoted; -{ - return (expand_string_to_string_internal (string, quoted, expand_string_assignment)); -} - -char * -expand_arith_string (string, quoted) - char *string; - int quoted; -{ - return (expand_string_if_necessary (string, quoted, expand_string)); -} - -#if defined (COND_COMMAND) -/* Just remove backslashes in STRING. Returns a new string. */ -char * -remove_backslashes (string) - char *string; -{ - char *r, *ret, *s; - - r = ret = (char *)xmalloc (strlen (string) + 1); - for (s = string; s && *s; ) - { - if (*s == '\\') - s++; - if (*s == 0) - break; - *r++ = *s++; - } - *r = '\0'; - return ret; -} - -/* This needs better error handling. */ -/* Expand W for use as an argument to a unary or binary operator in a - [[...]] expression. If SPECIAL is 1, this is the rhs argument - to the != or == operator, and should be treated as a pattern. In - this case, we quote the string specially for the globbing code. If - SPECIAL is 2, this is an rhs argument for the =~ operator, and should - be quoted appropriately for regcomp/regexec. The caller is responsible - for removing the backslashes if the unquoted word is needed later. */ -char * -cond_expand_word (w, special) - WORD_DESC *w; - int special; -{ - char *r, *p; - WORD_LIST *l; - int qflags; - - if (w->word == 0 || w->word[0] == '\0') - return ((char *)NULL); - - w->flags |= W_NOSPLIT2; - l = call_expand_word_internal (w, 0, 0, (int *)0, (int *)0); - if (l) - { - if (special == 0) - { - dequote_list (l); - r = string_list (l); - } - else - { - qflags = QGLOB_CVTNULL; - if (special == 2) - qflags |= QGLOB_REGEXP; - p = string_list (l); - r = quote_string_for_globbing (p, qflags); - free (p); - } - dispose_words (l); - } - else - r = (char *)NULL; - - return r; -} -#endif - -/* Call expand_word_internal to expand W and handle error returns. - A convenience function for functions that don't want to handle - any errors or free any memory before aborting. */ -static WORD_LIST * -call_expand_word_internal (w, q, i, c, e) - WORD_DESC *w; - int q, i, *c, *e; -{ - WORD_LIST *result; - - result = expand_word_internal (w, q, i, c, e); - if (result == &expand_word_error || result == &expand_word_fatal) - { - /* By convention, each time this error is returned, w->word has - already been freed (it sometimes may not be in the fatal case, - but that doesn't result in a memory leak because we're going - to exit in most cases). */ - w->word = (char *)NULL; - last_command_exit_value = EXECUTION_FAILURE; - exp_jump_to_top_level ((result == &expand_word_error) ? DISCARD : FORCE_EOF); - /* NOTREACHED */ - } - else - return (result); -} - -/* Perform parameter expansion, command substitution, and arithmetic - expansion on STRING, as if it were a word. Leave the result quoted. - Since this does not perform word splitting, it leaves quoted nulls - in the result. */ -static WORD_LIST * -expand_string_internal (string, quoted) - char *string; - int quoted; -{ - WORD_DESC td; - WORD_LIST *tresult; - - if (string == 0 || *string == 0) - return ((WORD_LIST *)NULL); - - td.flags = 0; - td.word = savestring (string); - - tresult = call_expand_word_internal (&td, quoted, 0, (int *)NULL, (int *)NULL); - - FREE (td.word); - return (tresult); -} - -/* Expand STRING by performing parameter expansion, command substitution, - and arithmetic expansion. Dequote the resulting WORD_LIST before - returning it, but do not perform word splitting. The call to - remove_quoted_nulls () is in here because word splitting normally - takes care of quote removal. */ -WORD_LIST * -expand_string_unsplit (string, quoted) - char *string; - int quoted; -{ - WORD_LIST *value; - - if (string == 0 || *string == '\0') - return ((WORD_LIST *)NULL); - - expand_no_split_dollar_star = 1; - value = expand_string_internal (string, quoted); - expand_no_split_dollar_star = 0; - - if (value) - { - if (value->word) - { - remove_quoted_nulls (value->word->word); - value->word->flags &= ~W_HASQUOTEDNULL; - } - dequote_list (value); - } - return (value); -} - -/* Expand the rhs of an assignment statement */ -WORD_LIST * -expand_string_assignment (string, quoted) - char *string; - int quoted; -{ - WORD_DESC td; - WORD_LIST *value; - - if (string == 0 || *string == '\0') - return ((WORD_LIST *)NULL); - - expand_no_split_dollar_star = 1; - - td.flags = W_ASSIGNRHS; - td.word = savestring (string); - value = call_expand_word_internal (&td, quoted, 0, (int *)NULL, (int *)NULL); - FREE (td.word); - - expand_no_split_dollar_star = 0; - - if (value) - { - if (value->word) - { - remove_quoted_nulls (value->word->word); - value->word->flags &= ~W_HASQUOTEDNULL; - } - dequote_list (value); - } - return (value); -} - - -/* Expand one of the PS? prompt strings. This is a sort of combination of - expand_string_unsplit and expand_string_internal, but returns the - passed string when an error occurs. Might want to trap other calls - to jump_to_top_level here so we don't endlessly loop. */ -WORD_LIST * -expand_prompt_string (string, quoted, wflags) - char *string; - int quoted; - int wflags; -{ - WORD_LIST *value; - WORD_DESC td; - - if (string == 0 || *string == 0) - return ((WORD_LIST *)NULL); - - td.flags = wflags; - td.word = savestring (string); - - no_longjmp_on_fatal_error = 1; - value = expand_word_internal (&td, quoted, 0, (int *)NULL, (int *)NULL); - no_longjmp_on_fatal_error = 0; - - if (value == &expand_word_error || value == &expand_word_fatal) - { - value = make_word_list (make_bare_word (string), (WORD_LIST *)NULL); - return value; - } - FREE (td.word); - if (value) - { - if (value->word) - { - remove_quoted_nulls (value->word->word); - value->word->flags &= ~W_HASQUOTEDNULL; - } - dequote_list (value); - } - return (value); -} - -/* Expand STRING just as if you were expanding a word, but do not dequote - the resultant WORD_LIST. This is called only from within this file, - and is used to correctly preserve quoted characters when expanding - things like ${1+"$@"}. This does parameter expansion, command - substitution, arithmetic expansion, and word splitting. */ -static WORD_LIST * -expand_string_leave_quoted (string, quoted) - char *string; - int quoted; -{ - WORD_LIST *tlist; - WORD_LIST *tresult; - - if (string == 0 || *string == '\0') - return ((WORD_LIST *)NULL); - - tlist = expand_string_internal (string, quoted); - - if (tlist) - { - tresult = word_list_split (tlist); - dispose_words (tlist); - return (tresult); - } - return ((WORD_LIST *)NULL); -} - -/* This does not perform word splitting or dequote the WORD_LIST - it returns. */ -static WORD_LIST * -expand_string_for_rhs (string, quoted, dollar_at_p, has_dollar_at) - char *string; - int quoted, *dollar_at_p, *has_dollar_at; -{ - WORD_DESC td; - WORD_LIST *tresult; - - if (string == 0 || *string == '\0') - return (WORD_LIST *)NULL; - - td.flags = W_NOSPLIT2; /* no splitting, remove "" and '' */ - td.word = string; - tresult = call_expand_word_internal (&td, quoted, 1, dollar_at_p, has_dollar_at); - return (tresult); -} - -/* Expand STRING just as if you were expanding a word. This also returns - a list of words. Note that filename globbing is *NOT* done for word - or string expansion, just when the shell is expanding a command. This - does parameter expansion, command substitution, arithmetic expansion, - and word splitting. Dequote the resultant WORD_LIST before returning. */ -WORD_LIST * -expand_string (string, quoted) - char *string; - int quoted; -{ - WORD_LIST *result; - - if (string == 0 || *string == '\0') - return ((WORD_LIST *)NULL); - - result = expand_string_leave_quoted (string, quoted); - return (result ? dequote_list (result) : result); -} - -/*************************************************** - * * - * Functions to handle quoting chars * - * * - ***************************************************/ - -/* Conventions: - - A string with s[0] == CTLNUL && s[1] == 0 is a quoted null string. - The parser passes CTLNUL as CTLESC CTLNUL. */ - -/* Quote escape characters in string s, but no other characters. This is - used to protect CTLESC and CTLNUL in variable values from the rest of - the word expansion process after the variable is expanded (word splitting - and filename generation). If IFS is null, we quote spaces as well, just - in case we split on spaces later (in the case of unquoted $@, we will - eventually attempt to split the entire word on spaces). Corresponding - code exists in dequote_escapes. Even if we don't end up splitting on - spaces, quoting spaces is not a problem. This should never be called on - a string that is quoted with single or double quotes or part of a here - document (effectively double-quoted). */ -char * -quote_escapes (string) - char *string; -{ - register char *s, *t; - size_t slen; - char *result, *send; - int quote_spaces, skip_ctlesc, skip_ctlnul; - DECLARE_MBSTATE; - - slen = strlen (string); - send = string + slen; - - quote_spaces = (ifs_value && *ifs_value == 0); - - for (skip_ctlesc = skip_ctlnul = 0, s = ifs_value; s && *s; s++) - skip_ctlesc |= *s == CTLESC, skip_ctlnul |= *s == CTLNUL; - - t = result = (char *)xmalloc ((slen * 2) + 1); - s = string; - - while (*s) - { - if ((skip_ctlesc == 0 && *s == CTLESC) || (skip_ctlnul == 0 && *s == CTLNUL) || (quote_spaces && *s == ' ')) - *t++ = CTLESC; - COPY_CHAR_P (t, s, send); - } - *t = '\0'; - return (result); -} - -static WORD_LIST * -list_quote_escapes (list) - WORD_LIST *list; -{ - register WORD_LIST *w; - char *t; - - for (w = list; w; w = w->next) - { - t = w->word->word; - w->word->word = quote_escapes (t); - free (t); - } - return list; -} - -/* Inverse of quote_escapes; remove CTLESC protecting CTLESC or CTLNUL. - - The parser passes us CTLESC as CTLESC CTLESC and CTLNUL as CTLESC CTLNUL. - This is necessary to make unquoted CTLESC and CTLNUL characters in the - data stream pass through properly. - - We need to remove doubled CTLESC characters inside quoted strings before - quoting the entire string, so we do not double the number of CTLESC - characters. - - Also used by parts of the pattern substitution code. */ -char * -dequote_escapes (string) - char *string; -{ - register char *s, *t, *s1; - size_t slen; - char *result, *send; - int quote_spaces; - DECLARE_MBSTATE; - - if (string == 0) - return string; - - slen = strlen (string); - send = string + slen; - - t = result = (char *)xmalloc (slen + 1); - - if (strchr (string, CTLESC) == 0) - return (strcpy (result, string)); - - quote_spaces = (ifs_value && *ifs_value == 0); - - s = string; - while (*s) - { - if (*s == CTLESC && (s[1] == CTLESC || s[1] == CTLNUL || (quote_spaces && s[1] == ' '))) - { - s++; - if (*s == '\0') - break; - } - COPY_CHAR_P (t, s, send); - } - *t = '\0'; - return result; -} - -/* Return a new string with the quoted representation of character C. - This turns "" into QUOTED_NULL, so the W_HASQUOTEDNULL flag needs to be - set in any resultant WORD_DESC where this value is the word. */ -static char * -make_quoted_char (c) - int c; -{ - char *temp; - - temp = (char *)xmalloc (3); - if (c == 0) - { - temp[0] = CTLNUL; - temp[1] = '\0'; - } - else - { - temp[0] = CTLESC; - temp[1] = c; - temp[2] = '\0'; - } - return (temp); -} - -/* Quote STRING, returning a new string. This turns "" into QUOTED_NULL, so - the W_HASQUOTEDNULL flag needs to be set in any resultant WORD_DESC where - this value is the word. */ -char * -quote_string (string) - char *string; -{ - register char *t; - size_t slen; - char *result, *send; - - if (*string == 0) - { - result = (char *)xmalloc (2); - result[0] = CTLNUL; - result[1] = '\0'; - } - else - { - DECLARE_MBSTATE; - - slen = strlen (string); - send = string + slen; - - result = (char *)xmalloc ((slen * 2) + 1); - - for (t = result; string < send; ) - { - *t++ = CTLESC; - COPY_CHAR_P (t, string, send); - } - *t = '\0'; - } - return (result); -} - -/* De-quote quoted characters in STRING. */ -char * -dequote_string (string) - char *string; -{ - register char *s, *t; - size_t slen; - char *result, *send; - DECLARE_MBSTATE; - - slen = strlen (string); - - t = result = (char *)xmalloc (slen + 1); - - if (QUOTED_NULL (string)) - { - result[0] = '\0'; - return (result); - } - - /* If no character in the string can be quoted, don't bother examining - each character. Just return a copy of the string passed to us. */ - if (strchr (string, CTLESC) == NULL) - return (strcpy (result, string)); - - send = string + slen; - s = string; - while (*s) - { - if (*s == CTLESC) - { - s++; - if (*s == '\0') - break; - } - COPY_CHAR_P (t, s, send); - } - - *t = '\0'; - return (result); -} - -/* Quote the entire WORD_LIST list. */ -static WORD_LIST * -quote_list (list) - WORD_LIST *list; -{ - register WORD_LIST *w; - char *t; - - for (w = list; w; w = w->next) - { - t = w->word->word; - w->word->word = quote_string (t); - if (*t == 0) - w->word->flags |= W_HASQUOTEDNULL; /* XXX - turn on W_HASQUOTEDNULL here? */ - w->word->flags |= W_QUOTED; - free (t); - } - return list; -} - -/* De-quote quoted characters in each word in LIST. */ -WORD_LIST * -dequote_list (list) - WORD_LIST *list; -{ - register char *s; - register WORD_LIST *tlist; - - for (tlist = list; tlist; tlist = tlist->next) - { - s = dequote_string (tlist->word->word); - if (QUOTED_NULL (tlist->word->word)) - tlist->word->flags &= ~W_HASQUOTEDNULL; - free (tlist->word->word); - tlist->word->word = s; - } - return list; -} - -/* Remove CTLESC protecting a CTLESC or CTLNUL in place. Return the passed - string. */ -char * -remove_quoted_escapes (string) - char *string; -{ - char *t; - - if (string) - { - t = dequote_escapes (string); - strcpy (string, t); - free (t); - } - - return (string); -} - -/* Perform quoted null character removal on STRING. We don't allow any - quoted null characters in the middle or at the ends of strings because - of how expand_word_internal works. remove_quoted_nulls () turns - STRING into an empty string iff it only consists of a quoted null, - and removes all unquoted CTLNUL characters. */ -char * -remove_quoted_nulls (string) - char *string; -{ - register size_t slen; - register int i, j, prev_i; - DECLARE_MBSTATE; - - if (strchr (string, CTLNUL) == 0) /* XXX */ - return string; /* XXX */ - - slen = strlen (string); - i = j = 0; - - while (i < slen) - { - if (string[i] == CTLESC) - { - /* Old code had j++, but we cannot assume that i == j at this - point -- what if a CTLNUL has already been removed from the - string? We don't want to drop the CTLESC or recopy characters - that we've already copied down. */ - i++; string[j++] = CTLESC; - if (i == slen) - break; - } - else if (string[i] == CTLNUL) - { - i++; - continue; - } - - prev_i = i; - ADVANCE_CHAR (string, slen, i); - if (j < prev_i) - { - do string[j++] = string[prev_i++]; while (prev_i < i); - } - else - j = i; - } - string[j] = '\0'; - - return (string); -} - -/* Perform quoted null character removal on each element of LIST. - This modifies LIST. */ -void -word_list_remove_quoted_nulls (list) - WORD_LIST *list; -{ - register WORD_LIST *t; - - for (t = list; t; t = t->next) - { - remove_quoted_nulls (t->word->word); - t->word->flags &= ~W_HASQUOTEDNULL; - } -} - -/* **************************************************************** */ -/* */ -/* Functions for Matching and Removing Patterns */ -/* */ -/* **************************************************************** */ - -#if defined (HANDLE_MULTIBYTE) -#if 0 /* Currently unused */ -static unsigned char * -mb_getcharlens (string, len) - char *string; - int len; -{ - int i, offset, last; - unsigned char *ret; - char *p; - DECLARE_MBSTATE; - - i = offset = 0; - last = 0; - ret = (unsigned char *)xmalloc (len); - memset (ret, 0, len); - while (string[last]) - { - ADVANCE_CHAR (string, len, offset); - ret[last] = offset - last; - last = offset; - } - return ret; -} -#endif -#endif - -/* Remove the portion of PARAM matched by PATTERN according to OP, where OP - can have one of 4 values: - RP_LONG_LEFT remove longest matching portion at start of PARAM - RP_SHORT_LEFT remove shortest matching portion at start of PARAM - RP_LONG_RIGHT remove longest matching portion at end of PARAM - RP_SHORT_RIGHT remove shortest matching portion at end of PARAM -*/ - -#define RP_LONG_LEFT 1 -#define RP_SHORT_LEFT 2 -#define RP_LONG_RIGHT 3 -#define RP_SHORT_RIGHT 4 - -/* Returns its first argument if nothing matched; new memory otherwise */ -static char * -remove_upattern (param, pattern, op) - char *param, *pattern; - int op; -{ - register int len; - register char *end; - register char *p, *ret, c; - - len = STRLEN (param); - end = param + len; - - switch (op) - { - case RP_LONG_LEFT: /* remove longest match at start */ - for (p = end; p >= param; p--) - { - c = *p; *p = '\0'; - if (strmatch (pattern, param, FNMATCH_EXTFLAG) != FNM_NOMATCH) - { - *p = c; - return (savestring (p)); - } - *p = c; - - } - break; - - case RP_SHORT_LEFT: /* remove shortest match at start */ - for (p = param; p <= end; p++) - { - c = *p; *p = '\0'; - if (strmatch (pattern, param, FNMATCH_EXTFLAG) != FNM_NOMATCH) - { - *p = c; - return (savestring (p)); - } - *p = c; - } - break; - - case RP_LONG_RIGHT: /* remove longest match at end */ - for (p = param; p <= end; p++) - { - if (strmatch (pattern, p, FNMATCH_EXTFLAG) != FNM_NOMATCH) - { - c = *p; *p = '\0'; - ret = savestring (param); - *p = c; - return (ret); - } - } - break; - - case RP_SHORT_RIGHT: /* remove shortest match at end */ - for (p = end; p >= param; p--) - { - if (strmatch (pattern, p, FNMATCH_EXTFLAG) != FNM_NOMATCH) - { - c = *p; *p = '\0'; - ret = savestring (param); - *p = c; - return (ret); - } - } - break; - } - - return (param); /* no match, return original string */ -} - -#if defined (HANDLE_MULTIBYTE) -/* Returns its first argument if nothing matched; new memory otherwise */ -static wchar_t * -remove_wpattern (wparam, wstrlen, wpattern, op) - wchar_t *wparam; - size_t wstrlen; - wchar_t *wpattern; - int op; -{ - wchar_t wc, *ret; - int n; - - switch (op) - { - case RP_LONG_LEFT: /* remove longest match at start */ - for (n = wstrlen; n >= 0; n--) - { - wc = wparam[n]; wparam[n] = L'\0'; - if (wcsmatch (wpattern, wparam, FNMATCH_EXTFLAG) != FNM_NOMATCH) - { - wparam[n] = wc; - return (wcsdup (wparam + n)); - } - wparam[n] = wc; - } - break; - - case RP_SHORT_LEFT: /* remove shortest match at start */ - for (n = 0; n <= wstrlen; n++) - { - wc = wparam[n]; wparam[n] = L'\0'; - if (wcsmatch (wpattern, wparam, FNMATCH_EXTFLAG) != FNM_NOMATCH) - { - wparam[n] = wc; - return (wcsdup (wparam + n)); - } - wparam[n] = wc; - } - break; - - case RP_LONG_RIGHT: /* remove longest match at end */ - for (n = 0; n <= wstrlen; n++) - { - if (wcsmatch (wpattern, wparam + n, FNMATCH_EXTFLAG) != FNM_NOMATCH) - { - wc = wparam[n]; wparam[n] = L'\0'; - ret = wcsdup (wparam); - wparam[n] = wc; - return (ret); - } - } - break; - - case RP_SHORT_RIGHT: /* remove shortest match at end */ - for (n = wstrlen; n >= 0; n--) - { - if (wcsmatch (wpattern, wparam + n, FNMATCH_EXTFLAG) != FNM_NOMATCH) - { - wc = wparam[n]; wparam[n] = L'\0'; - ret = wcsdup (wparam); - wparam[n] = wc; - return (ret); - } - } - break; - } - - return (wparam); /* no match, return original string */ -} -#endif /* HANDLE_MULTIBYTE */ - -static char * -remove_pattern (param, pattern, op) - char *param, *pattern; - int op; -{ - char *xret; - - if (param == NULL) - return (param); - if (*param == '\0' || pattern == NULL || *pattern == '\0') /* minor optimization */ - return (savestring (param)); - -#if defined (HANDLE_MULTIBYTE) - if (MB_CUR_MAX > 1) - { - wchar_t *ret, *oret; - size_t n; - wchar_t *wparam, *wpattern; - mbstate_t ps; - - n = xdupmbstowcs (&wpattern, NULL, pattern); - if (n == (size_t)-1) - { - xret = remove_upattern (param, pattern, op); - return ((xret == param) ? savestring (param) : xret); - } - n = xdupmbstowcs (&wparam, NULL, param); - if (n == (size_t)-1) - { - free (wpattern); - xret = remove_upattern (param, pattern, op); - return ((xret == param) ? savestring (param) : xret); - } - oret = ret = remove_wpattern (wparam, n, wpattern, op); - /* Don't bother to convert wparam back to multibyte string if nothing - matched; just return copy of original string */ - if (ret == wparam) - { - free (wparam); - free (wpattern); - return (savestring (param)); - } - - free (wparam); - free (wpattern); - - n = strlen (param); - xret = (char *)xmalloc (n + 1); - memset (&ps, '\0', sizeof (mbstate_t)); - n = wcsrtombs (xret, (const wchar_t **)&ret, n, &ps); - xret[n] = '\0'; /* just to make sure */ - free (oret); - return xret; - } - else -#endif - { - xret = remove_upattern (param, pattern, op); - return ((xret == param) ? savestring (param) : xret); - } -} - -/* Match PAT anywhere in STRING and return the match boundaries. - This returns 1 in case of a successful match, 0 otherwise. SP - and EP are pointers into the string where the match begins and - ends, respectively. MTYPE controls what kind of match is attempted. - MATCH_BEG and MATCH_END anchor the match at the beginning and end - of the string, respectively. The longest match is returned. */ -static int -match_upattern (string, pat, mtype, sp, ep) - char *string, *pat; - int mtype; - char **sp, **ep; -{ - int c, len, mlen; - register char *p, *p1, *npat; - char *end; - int n1; - - /* If the pattern doesn't match anywhere in the string, go ahead and - short-circuit right away. A minor optimization, saves a bunch of - unnecessary calls to strmatch (up to N calls for a string of N - characters) if the match is unsuccessful. To preserve the semantics - of the substring matches below, we make sure that the pattern has - `*' as first and last character, making a new pattern if necessary. */ - /* XXX - check this later if I ever implement `**' with special meaning, - since this will potentially result in `**' at the beginning or end */ - len = STRLEN (pat); - if (pat[0] != '*' || (pat[0] == '*' && pat[1] == LPAREN && extended_glob) || pat[len - 1] != '*') - { - p = npat = (char *)xmalloc (len + 3); - p1 = pat; - if (*p1 != '*' || (*p1 == '*' && p1[1] == LPAREN && extended_glob)) - *p++ = '*'; - while (*p1) - *p++ = *p1++; - if (p1[-1] != '*' || p[-2] == '\\') - *p++ = '*'; - *p = '\0'; - } - else - npat = pat; - c = strmatch (npat, string, FNMATCH_EXTFLAG); - if (npat != pat) - free (npat); - if (c == FNM_NOMATCH) - return (0); - - len = STRLEN (string); - end = string + len; - - mlen = umatchlen (pat, len); - - switch (mtype) - { - case MATCH_ANY: - for (p = string; p <= end; p++) - { - if (match_pattern_char (pat, p)) - { -#if 0 - for (p1 = end; p1 >= p; p1--) -#else - p1 = (mlen == -1) ? end : p + mlen; - /* p1 - p = length of portion of string to be considered - p = current position in string - mlen = number of characters consumed by match (-1 for entire string) - end = end of string - we want to break immediately if the potential match len - is greater than the number of characters remaining in the - string - */ - if (p1 > end) - break; - for ( ; p1 >= p; p1--) -#endif - { - c = *p1; *p1 = '\0'; - if (strmatch (pat, p, FNMATCH_EXTFLAG) == 0) - { - *p1 = c; - *sp = p; - *ep = p1; - return 1; - } - *p1 = c; -#if 1 - /* If MLEN != -1, we have a fixed length pattern. */ - if (mlen != -1) - break; -#endif - } - } - } - - return (0); - - case MATCH_BEG: - if (match_pattern_char (pat, string) == 0) - return (0); - -#if 0 - for (p = end; p >= string; p--) -#else - for (p = (mlen == -1) ? end : string + mlen; p >= string; p--) -#endif - { - c = *p; *p = '\0'; - if (strmatch (pat, string, FNMATCH_EXTFLAG) == 0) - { - *p = c; - *sp = string; - *ep = p; - return 1; - } - *p = c; -#if 1 - /* If MLEN != -1, we have a fixed length pattern. */ - if (mlen != -1) - break; -#endif - } - - return (0); - - case MATCH_END: -#if 0 - for (p = string; p <= end; p++) -#else - for (p = end - ((mlen == -1) ? len : mlen); p <= end; p++) -#endif - { - if (strmatch (pat, p, FNMATCH_EXTFLAG) == 0) - { - *sp = p; - *ep = end; - return 1; - } -#if 1 - /* If MLEN != -1, we have a fixed length pattern. */ - if (mlen != -1) - break; -#endif - } - - return (0); - } - - return (0); -} - -#if defined (HANDLE_MULTIBYTE) -/* Match WPAT anywhere in WSTRING and return the match boundaries. - This returns 1 in case of a successful match, 0 otherwise. Wide - character version. */ -static int -match_wpattern (wstring, indices, wstrlen, wpat, mtype, sp, ep) - wchar_t *wstring; - char **indices; - size_t wstrlen; - wchar_t *wpat; - int mtype; - char **sp, **ep; -{ - wchar_t wc, *wp, *nwpat, *wp1; - size_t len; - int mlen; - int n, n1, n2, simple; - - simple = (wpat[0] != L'\\' && wpat[0] != L'*' && wpat[0] != L'?' && wpat[0] != L'['); -#if defined (EXTENDED_GLOB) - if (extended_glob) - simple |= (wpat[1] != L'(' || (wpat[0] != L'*' && wpat[0] != L'?' && wpat[0] != L'+' && wpat[0] != L'!' && wpat[0] != L'@')); /*)*/ -#endif - - /* If the pattern doesn't match anywhere in the string, go ahead and - short-circuit right away. A minor optimization, saves a bunch of - unnecessary calls to strmatch (up to N calls for a string of N - characters) if the match is unsuccessful. To preserve the semantics - of the substring matches below, we make sure that the pattern has - `*' as first and last character, making a new pattern if necessary. */ - len = wcslen (wpat); - if (wpat[0] != L'*' || (wpat[0] == L'*' && wpat[1] == WLPAREN && extended_glob) || wpat[len - 1] != L'*') - { - wp = nwpat = (wchar_t *)xmalloc ((len + 3) * sizeof (wchar_t)); - wp1 = wpat; - if (*wp1 != L'*' || (*wp1 == '*' && wp1[1] == WLPAREN && extended_glob)) - *wp++ = L'*'; - while (*wp1 != L'\0') - *wp++ = *wp1++; - if (wp1[-1] != L'*' || wp1[-2] == L'\\') - *wp++ = L'*'; - *wp = '\0'; - } - else - nwpat = wpat; - len = wcsmatch (nwpat, wstring, FNMATCH_EXTFLAG); - if (nwpat != wpat) - free (nwpat); - if (len == FNM_NOMATCH) - return (0); - - mlen = wmatchlen (wpat, wstrlen); - -/* itrace("wmatchlen (%ls) -> %d", wpat, mlen); */ - switch (mtype) - { - case MATCH_ANY: - for (n = 0; n <= wstrlen; n++) - { -#if 1 - n2 = simple ? (*wpat == wstring[n]) : match_pattern_wchar (wpat, wstring + n); -#else - n2 = match_pattern_wchar (wpat, wstring + n); -#endif - if (n2) - { -#if 0 - for (n1 = wstrlen; n1 >= n; n1--) -#else - n1 = (mlen == -1) ? wstrlen : n + mlen; - if (n1 > wstrlen) - break; - - for ( ; n1 >= n; n1--) -#endif - { - wc = wstring[n1]; wstring[n1] = L'\0'; - if (wcsmatch (wpat, wstring + n, FNMATCH_EXTFLAG) == 0) - { - wstring[n1] = wc; - *sp = indices[n]; - *ep = indices[n1]; - return 1; - } - wstring[n1] = wc; -#if 1 - /* If MLEN != -1, we have a fixed length pattern. */ - if (mlen != -1) - break; -#endif - } - } - } - - return (0); - - case MATCH_BEG: - if (match_pattern_wchar (wpat, wstring) == 0) - return (0); - -#if 0 - for (n = wstrlen; n >= 0; n--) -#else - for (n = (mlen == -1) ? wstrlen : mlen; n >= 0; n--) -#endif - { - wc = wstring[n]; wstring[n] = L'\0'; - if (wcsmatch (wpat, wstring, FNMATCH_EXTFLAG) == 0) - { - wstring[n] = wc; - *sp = indices[0]; - *ep = indices[n]; - return 1; - } - wstring[n] = wc; -#if 1 - /* If MLEN != -1, we have a fixed length pattern. */ - if (mlen != -1) - break; -#endif - } - - return (0); - - case MATCH_END: -#if 0 - for (n = 0; n <= wstrlen; n++) -#else - for (n = wstrlen - ((mlen == -1) ? wstrlen : mlen); n <= wstrlen; n++) -#endif - { - if (wcsmatch (wpat, wstring + n, FNMATCH_EXTFLAG) == 0) - { - *sp = indices[n]; - *ep = indices[wstrlen]; - return 1; - } -#if 1 - /* If MLEN != -1, we have a fixed length pattern. */ - if (mlen != -1) - break; -#endif - } - - return (0); - } - - return (0); -} -#endif /* HANDLE_MULTIBYTE */ - -static int -match_pattern (string, pat, mtype, sp, ep) - char *string, *pat; - int mtype; - char **sp, **ep; -{ -#if defined (HANDLE_MULTIBYTE) - int ret; - size_t n; - wchar_t *wstring, *wpat; - char **indices; - size_t slen, plen, mslen, mplen; -#endif - - if (string == 0 || *string == 0 || pat == 0 || *pat == 0) - return (0); - -#if defined (HANDLE_MULTIBYTE) - if (MB_CUR_MAX > 1) - { -#if 0 - slen = STRLEN (string); - mslen = MBSLEN (string); - plen = STRLEN (pat); - mplen = MBSLEN (pat); - if (slen == mslen && plen == mplen) -#else - if (mbsmbchar (string) == 0 && mbsmbchar (pat) == 0) -#endif - return (match_upattern (string, pat, mtype, sp, ep)); - - n = xdupmbstowcs (&wpat, NULL, pat); - if (n == (size_t)-1) - return (match_upattern (string, pat, mtype, sp, ep)); - n = xdupmbstowcs (&wstring, &indices, string); - if (n == (size_t)-1) - { - free (wpat); - return (match_upattern (string, pat, mtype, sp, ep)); - } - ret = match_wpattern (wstring, indices, n, wpat, mtype, sp, ep); - - free (wpat); - free (wstring); - free (indices); - - return (ret); - } - else -#endif - return (match_upattern (string, pat, mtype, sp, ep)); -} - -static int -getpatspec (c, value) - int c; - char *value; -{ - if (c == '#') - return ((*value == '#') ? RP_LONG_LEFT : RP_SHORT_LEFT); - else /* c == '%' */ - return ((*value == '%') ? RP_LONG_RIGHT : RP_SHORT_RIGHT); -} - -/* Posix.2 says that the WORD should be run through tilde expansion, - parameter expansion, command substitution and arithmetic expansion. - This leaves the result quoted, so quote_string_for_globbing () has - to be called to fix it up for strmatch (). If QUOTED is non-zero, - it means that the entire expression was enclosed in double quotes. - This means that quoting characters in the pattern do not make any - special pattern characters quoted. For example, the `*' in the - following retains its special meaning: "${foo#'*'}". */ -static char * -getpattern (value, quoted, expandpat) - char *value; - int quoted, expandpat; -{ - char *pat, *tword; - WORD_LIST *l; -#if 0 - int i; -#endif - /* There is a problem here: how to handle single or double quotes in the - pattern string when the whole expression is between double quotes? - POSIX.2 says that enclosing double quotes do not cause the pattern to - be quoted, but does that leave us a problem with @ and array[@] and their - expansions inside a pattern? */ -#if 0 - if (expandpat && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && *tword) - { - i = 0; - pat = string_extract_double_quoted (tword, &i, 1); - free (tword); - tword = pat; - } -#endif - - /* expand_string_for_rhs () leaves WORD quoted and does not perform - word splitting. */ - l = *value ? expand_string_for_rhs (value, - (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) ? Q_PATQUOTE : quoted, - (int *)NULL, (int *)NULL) - : (WORD_LIST *)0; - pat = string_list (l); - dispose_words (l); - if (pat) - { - tword = quote_string_for_globbing (pat, QGLOB_CVTNULL); - free (pat); - pat = tword; - } - return (pat); -} - -#if 0 -/* Handle removing a pattern from a string as a result of ${name%[%]value} - or ${name#[#]value}. */ -static char * -variable_remove_pattern (value, pattern, patspec, quoted) - char *value, *pattern; - int patspec, quoted; -{ - char *tword; - - tword = remove_pattern (value, pattern, patspec); - - return (tword); -} -#endif - -static char * -list_remove_pattern (list, pattern, patspec, itype, quoted) - WORD_LIST *list; - char *pattern; - int patspec, itype, quoted; -{ - WORD_LIST *new, *l; - WORD_DESC *w; - char *tword; - - for (new = (WORD_LIST *)NULL, l = list; l; l = l->next) - { - tword = remove_pattern (l->word->word, pattern, patspec); - w = alloc_word_desc (); - w->word = tword ? tword : savestring (""); - new = make_word_list (w, new); - } - - l = REVERSE_LIST (new, WORD_LIST *); - tword = string_list_pos_params (itype, l, quoted); - dispose_words (l); - - return (tword); -} - -static char * -parameter_list_remove_pattern (itype, pattern, patspec, quoted) - int itype; - char *pattern; - int patspec, quoted; -{ - char *ret; - WORD_LIST *list; - - list = list_rest_of_args (); - if (list == 0) - return ((char *)NULL); - ret = list_remove_pattern (list, pattern, patspec, itype, quoted); - dispose_words (list); - return (ret); -} - -#if defined (ARRAY_VARS) -static char * -array_remove_pattern (var, pattern, patspec, varname, quoted) - SHELL_VAR *var; - char *pattern; - int patspec; - char *varname; /* so we can figure out how it's indexed */ - int quoted; -{ - ARRAY *a; - HASH_TABLE *h; - int itype; - char *ret; - WORD_LIST *list; - SHELL_VAR *v; - - /* compute itype from varname here */ - v = array_variable_part (varname, &ret, 0); - itype = ret[0]; - - a = (v && array_p (v)) ? array_cell (v) : 0; - h = (v && assoc_p (v)) ? assoc_cell (v) : 0; - - list = a ? array_to_word_list (a) : (h ? assoc_to_word_list (h) : 0); - if (list == 0) - return ((char *)NULL); - ret = list_remove_pattern (list, pattern, patspec, itype, quoted); - dispose_words (list); - - return ret; -} -#endif /* ARRAY_VARS */ - -static char * -parameter_brace_remove_pattern (varname, value, ind, patstr, rtype, quoted, flags) - char *varname, *value; - int ind; - char *patstr; - int rtype, quoted, flags; -{ - int vtype, patspec, starsub; - char *temp1, *val, *pattern; - SHELL_VAR *v; - - if (value == 0) - return ((char *)NULL); - - this_command_name = varname; - - vtype = get_var_and_type (varname, value, ind, quoted, flags, &v, &val); - if (vtype == -1) - return ((char *)NULL); - - starsub = vtype & VT_STARSUB; - vtype &= ~VT_STARSUB; - - patspec = getpatspec (rtype, patstr); - if (patspec == RP_LONG_LEFT || patspec == RP_LONG_RIGHT) - patstr++; - - /* Need to pass getpattern newly-allocated memory in case of expansion -- - the expansion code will free the passed string on an error. */ - temp1 = savestring (patstr); - pattern = getpattern (temp1, quoted, 1); - free (temp1); - - temp1 = (char *)NULL; /* shut up gcc */ - switch (vtype) - { - case VT_VARIABLE: - case VT_ARRAYMEMBER: - temp1 = remove_pattern (val, pattern, patspec); - if (vtype == VT_VARIABLE) - FREE (val); - if (temp1) - { - val = (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) - ? quote_string (temp1) - : quote_escapes (temp1); - free (temp1); - temp1 = val; - } - break; -#if defined (ARRAY_VARS) - case VT_ARRAYVAR: - temp1 = array_remove_pattern (v, pattern, patspec, varname, quoted); - if (temp1 && ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) == 0)) - { - val = quote_escapes (temp1); - free (temp1); - temp1 = val; - } - break; -#endif - case VT_POSPARMS: - temp1 = parameter_list_remove_pattern (varname[0], pattern, patspec, quoted); - if (temp1 && ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) == 0)) - { - val = quote_escapes (temp1); - free (temp1); - temp1 = val; - } - break; - } - - FREE (pattern); - return temp1; -} - -/******************************************* - * * - * Functions to expand WORD_DESCs * - * * - *******************************************/ - -/* Expand WORD, performing word splitting on the result. This does - parameter expansion, command substitution, arithmetic expansion, - word splitting, and quote removal. */ - -WORD_LIST * -expand_word (word, quoted) - WORD_DESC *word; - int quoted; -{ - WORD_LIST *result, *tresult; - - tresult = call_expand_word_internal (word, quoted, 0, (int *)NULL, (int *)NULL); - result = word_list_split (tresult); - dispose_words (tresult); - return (result ? dequote_list (result) : result); -} - -/* Expand WORD, but do not perform word splitting on the result. This - does parameter expansion, command substitution, arithmetic expansion, - and quote removal. */ -WORD_LIST * -expand_word_unsplit (word, quoted) - WORD_DESC *word; - int quoted; -{ - WORD_LIST *result; - - expand_no_split_dollar_star = 1; -#if defined (HANDLE_MULTIBYTE) - if (ifs_firstc[0] == 0) -#else - if (ifs_firstc == 0) -#endif - word->flags |= W_NOSPLIT; - word->flags |= W_NOSPLIT2; - result = call_expand_word_internal (word, quoted, 0, (int *)NULL, (int *)NULL); - expand_no_split_dollar_star = 0; - - return (result ? dequote_list (result) : result); -} - -/* Perform shell expansions on WORD, but do not perform word splitting or - quote removal on the result. Virtually identical to expand_word_unsplit; - could be combined if implementations don't diverge. */ -WORD_LIST * -expand_word_leave_quoted (word, quoted) - WORD_DESC *word; - int quoted; -{ - WORD_LIST *result; - - expand_no_split_dollar_star = 1; -#if defined (HANDLE_MULTIBYTE) - if (ifs_firstc[0] == 0) -#else - if (ifs_firstc == 0) -#endif - word->flags |= W_NOSPLIT; - word->flags |= W_NOSPLIT2; - result = call_expand_word_internal (word, quoted, 0, (int *)NULL, (int *)NULL); - expand_no_split_dollar_star = 0; - - return result; -} - -#if defined (PROCESS_SUBSTITUTION) - -/*****************************************************************/ -/* */ -/* Hacking Process Substitution */ -/* */ -/*****************************************************************/ - -#if !defined (HAVE_DEV_FD) -/* Named pipes must be removed explicitly with `unlink'. This keeps a list - of FIFOs the shell has open. unlink_fifo_list will walk the list and - unlink all of them. add_fifo_list adds the name of an open FIFO to the - list. NFIFO is a count of the number of FIFOs in the list. */ -#define FIFO_INCR 20 - -struct temp_fifo { - char *file; - pid_t proc; -}; - -static struct temp_fifo *fifo_list = (struct temp_fifo *)NULL; -static int nfifo; -static int fifo_list_size; - -char * -copy_fifo_list (sizep) - int *sizep; -{ - if (sizep) - *sizep = 0; - return (char *)NULL; -} - -static void -add_fifo_list (pathname) - char *pathname; -{ - if (nfifo >= fifo_list_size - 1) - { - fifo_list_size += FIFO_INCR; - fifo_list = (struct temp_fifo *)xrealloc (fifo_list, - fifo_list_size * sizeof (struct temp_fifo)); - } - - fifo_list[nfifo].file = savestring (pathname); - nfifo++; -} - -void -unlink_fifo (i) - int i; -{ - if ((fifo_list[i].proc == -1) || (kill(fifo_list[i].proc, 0) == -1)) - { - unlink (fifo_list[i].file); - free (fifo_list[i].file); - fifo_list[i].file = (char *)NULL; - fifo_list[i].proc = -1; - } -} - -void -unlink_fifo_list () -{ - int saved, i, j; - - if (nfifo == 0) - return; - - for (i = saved = 0; i < nfifo; i++) - { - if ((fifo_list[i].proc == -1) || (kill(fifo_list[i].proc, 0) == -1)) - { - unlink (fifo_list[i].file); - free (fifo_list[i].file); - fifo_list[i].file = (char *)NULL; - fifo_list[i].proc = -1; - } - else - saved++; - } - - /* If we didn't remove some of the FIFOs, compact the list. */ - if (saved) - { - for (i = j = 0; i < nfifo; i++) - if (fifo_list[i].file) - { - fifo_list[j].file = fifo_list[i].file; - fifo_list[j].proc = fifo_list[i].proc; - j++; - } - nfifo = j; - } - else - nfifo = 0; -} - -/* Take LIST, which is a bitmap denoting active FIFOs in fifo_list - from some point in the past, and close all open FIFOs in fifo_list - that are not marked as active in LIST. If LIST is NULL, close - everything in fifo_list. LSIZE is the number of elements in LIST, in - case it's larger than fifo_list_size (size of fifo_list). */ -void -close_new_fifos (list, lsize) - char *list; - int lsize; -{ - int i; - - if (list == 0) - { - unlink_fifo_list (); - return; - } - - for (i = 0; i < lsize; i++) - if (list[i] == 0 && i < fifo_list_size && fifo_list[i].proc != -1) - unlink_fifo (i); - - for (i = lsize; i < fifo_list_size; i++) - unlink_fifo (i); -} - -int -fifos_pending () -{ - return nfifo; -} - -int -num_fifos () -{ - return nfifo; -} - -static char * -make_named_pipe () -{ - char *tname; - - tname = sh_mktmpname ("sh-np", MT_USERANDOM|MT_USETMPDIR); - if (mkfifo (tname, 0600) < 0) - { - free (tname); - return ((char *)NULL); - } - - add_fifo_list (tname); - return (tname); -} - -#else /* HAVE_DEV_FD */ - -/* DEV_FD_LIST is a bitmap of file descriptors attached to pipes the shell - has open to children. NFDS is a count of the number of bits currently - set in DEV_FD_LIST. TOTFDS is a count of the highest possible number - of open files. */ -static char *dev_fd_list = (char *)NULL; -static int nfds; -static int totfds; /* The highest possible number of open files. */ - -char * -copy_fifo_list (sizep) - int *sizep; -{ - char *ret; - - if (nfds == 0 || totfds == 0) - { - if (sizep) - *sizep = 0; - return (char *)NULL; - } - - if (sizep) - *sizep = totfds; - ret = (char *)xmalloc (totfds); - return (memcpy (ret, dev_fd_list, totfds)); -} - -static void -add_fifo_list (fd) - int fd; -{ - if (dev_fd_list == 0 || fd >= totfds) - { - int ofds; - - ofds = totfds; - totfds = getdtablesize (); - if (totfds < 0 || totfds > 256) - totfds = 256; - if (fd >= totfds) - totfds = fd + 2; - - dev_fd_list = (char *)xrealloc (dev_fd_list, totfds); - memset (dev_fd_list + ofds, '\0', totfds - ofds); - } - - dev_fd_list[fd] = 1; - nfds++; -} - -int -fifos_pending () -{ - return 0; /* used for cleanup; not needed with /dev/fd */ -} - -int -num_fifos () -{ - return nfds; -} - -void -unlink_fifo (fd) - int fd; -{ - if (dev_fd_list[fd]) - { - close (fd); - dev_fd_list[fd] = 0; - nfds--; - } -} - -void -unlink_fifo_list () -{ - register int i; - - if (nfds == 0) - return; - - for (i = 0; nfds && i < totfds; i++) - unlink_fifo (i); - - nfds = 0; -} - -/* Take LIST, which is a snapshot copy of dev_fd_list from some point in - the past, and close all open fds in dev_fd_list that are not marked - as open in LIST. If LIST is NULL, close everything in dev_fd_list. - LSIZE is the number of elements in LIST, in case it's larger than - totfds (size of dev_fd_list). */ -void -close_new_fifos (list, lsize) - char *list; - int lsize; -{ - int i; - - if (list == 0) - { - unlink_fifo_list (); - return; - } - - for (i = 0; i < lsize; i++) - if (list[i] == 0 && i < totfds && dev_fd_list[i]) - unlink_fifo (i); - - for (i = lsize; i < totfds; i++) - unlink_fifo (i); -} - -#if defined (NOTDEF) -print_dev_fd_list () -{ - register int i; - - fprintf (stderr, "pid %ld: dev_fd_list:", (long)getpid ()); - fflush (stderr); - - for (i = 0; i < totfds; i++) - { - if (dev_fd_list[i]) - fprintf (stderr, " %d", i); - } - fprintf (stderr, "\n"); -} -#endif /* NOTDEF */ - -static char * -make_dev_fd_filename (fd) - int fd; -{ - char *ret, intbuf[INT_STRLEN_BOUND (int) + 1], *p; - - ret = (char *)xmalloc (sizeof (DEV_FD_PREFIX) + 8); - - strcpy (ret, DEV_FD_PREFIX); - p = inttostr (fd, intbuf, sizeof (intbuf)); - strcpy (ret + sizeof (DEV_FD_PREFIX) - 1, p); - - add_fifo_list (fd); - return (ret); -} - -#endif /* HAVE_DEV_FD */ - -/* Return a filename that will open a connection to the process defined by - executing STRING. HAVE_DEV_FD, if defined, means open a pipe and return - a filename in /dev/fd corresponding to a descriptor that is one of the - ends of the pipe. If not defined, we use named pipes on systems that have - them. Systems without /dev/fd and named pipes are out of luck. - - OPEN_FOR_READ_IN_CHILD, if 1, means open the named pipe for reading or - use the read end of the pipe and dup that file descriptor to fd 0 in - the child. If OPEN_FOR_READ_IN_CHILD is 0, we open the named pipe for - writing or use the write end of the pipe in the child, and dup that - file descriptor to fd 1 in the child. The parent does the opposite. */ - -static char * -process_substitute (string, open_for_read_in_child) - char *string; - int open_for_read_in_child; -{ - char *pathname; - int fd, result; - pid_t old_pid, pid; -#if defined (HAVE_DEV_FD) - int parent_pipe_fd, child_pipe_fd; - int fildes[2]; -#endif /* HAVE_DEV_FD */ -#if defined (JOB_CONTROL) - pid_t old_pipeline_pgrp; -#endif - - if (!string || !*string || wordexp_only) - return ((char *)NULL); - -#if !defined (HAVE_DEV_FD) - pathname = make_named_pipe (); -#else /* HAVE_DEV_FD */ - if (pipe (fildes) < 0) - { - sys_error (_("cannot make pipe for process substitution")); - return ((char *)NULL); - } - /* If OPEN_FOR_READ_IN_CHILD == 1, we want to use the write end of - the pipe in the parent, otherwise the read end. */ - parent_pipe_fd = fildes[open_for_read_in_child]; - child_pipe_fd = fildes[1 - open_for_read_in_child]; - /* Move the parent end of the pipe to some high file descriptor, to - avoid clashes with FDs used by the script. */ - parent_pipe_fd = move_to_high_fd (parent_pipe_fd, 1, 64); - - pathname = make_dev_fd_filename (parent_pipe_fd); -#endif /* HAVE_DEV_FD */ - - if (pathname == 0) - { - sys_error (_("cannot make pipe for process substitution")); - return ((char *)NULL); - } - - old_pid = last_made_pid; - -#if defined (JOB_CONTROL) - old_pipeline_pgrp = pipeline_pgrp; - pipeline_pgrp = shell_pgrp; - save_pipeline (1); -#endif /* JOB_CONTROL */ - - pid = make_child ((char *)NULL, 1); - if (pid == 0) - { - reset_terminating_signals (); /* XXX */ - free_pushed_string_input (); - /* Cancel traps, in trap.c. */ - restore_original_signals (); /* XXX - what about special builtins? bash-4.2 */ - setup_async_signals (); - subshell_environment |= SUBSHELL_COMSUB|SUBSHELL_PROCSUB; - } - -#if defined (JOB_CONTROL) - set_sigchld_handler (); - stop_making_children (); - /* XXX - should we only do this in the parent? (as in command subst) */ - pipeline_pgrp = old_pipeline_pgrp; -#endif /* JOB_CONTROL */ - - if (pid < 0) - { - sys_error (_("cannot make child for process substitution")); - free (pathname); -#if defined (HAVE_DEV_FD) - close (parent_pipe_fd); - close (child_pipe_fd); -#endif /* HAVE_DEV_FD */ - return ((char *)NULL); - } - - if (pid > 0) - { -#if defined (JOB_CONTROL) - restore_pipeline (1); -#endif - -#if !defined (HAVE_DEV_FD) - fifo_list[nfifo-1].proc = pid; -#endif - - last_made_pid = old_pid; - -#if defined (JOB_CONTROL) && defined (PGRP_PIPE) - close_pgrp_pipe (); -#endif /* JOB_CONTROL && PGRP_PIPE */ - -#if defined (HAVE_DEV_FD) - close (child_pipe_fd); -#endif /* HAVE_DEV_FD */ - - return (pathname); - } - - set_sigint_handler (); - -#if defined (JOB_CONTROL) - set_job_control (0); -#endif /* JOB_CONTROL */ - -#if !defined (HAVE_DEV_FD) - /* Open the named pipe in the child. */ - fd = open (pathname, open_for_read_in_child ? O_RDONLY|O_NONBLOCK : O_WRONLY); - if (fd < 0) - { - /* Two separate strings for ease of translation. */ - if (open_for_read_in_child) - sys_error (_("cannot open named pipe %s for reading"), pathname); - else - sys_error (_("cannot open named pipe %s for writing"), pathname); - - exit (127); - } - if (open_for_read_in_child) - { - if (sh_unset_nodelay_mode (fd) < 0) - { - sys_error (_("cannot reset nodelay mode for fd %d"), fd); - exit (127); - } - } -#else /* HAVE_DEV_FD */ - fd = child_pipe_fd; -#endif /* HAVE_DEV_FD */ - - if (dup2 (fd, open_for_read_in_child ? 0 : 1) < 0) - { - sys_error (_("cannot duplicate named pipe %s as fd %d"), pathname, - open_for_read_in_child ? 0 : 1); - exit (127); - } - - if (fd != (open_for_read_in_child ? 0 : 1)) - close (fd); - - /* Need to close any files that this process has open to pipes inherited - from its parent. */ - if (current_fds_to_close) - { - close_fd_bitmap (current_fds_to_close); - current_fds_to_close = (struct fd_bitmap *)NULL; - } - -#if defined (HAVE_DEV_FD) - /* Make sure we close the parent's end of the pipe and clear the slot - in the fd list so it is not closed later, if reallocated by, for - instance, pipe(2). */ - close (parent_pipe_fd); - dev_fd_list[parent_pipe_fd] = 0; -#endif /* HAVE_DEV_FD */ - - result = parse_and_execute (string, "process substitution", (SEVAL_NONINT|SEVAL_NOHIST)); - -#if !defined (HAVE_DEV_FD) - /* Make sure we close the named pipe in the child before we exit. */ - close (open_for_read_in_child ? 0 : 1); -#endif /* !HAVE_DEV_FD */ - - exit (result); - /*NOTREACHED*/ -} -#endif /* PROCESS_SUBSTITUTION */ - -/***********************************/ -/* */ -/* Command Substitution */ -/* */ -/***********************************/ - -static char * -read_comsub (fd, quoted, rflag) - int fd, quoted; - int *rflag; -{ - char *istring, buf[128], *bufp, *s; - int istring_index, istring_size, c, tflag, skip_ctlesc, skip_ctlnul; - ssize_t bufn; - - istring = (char *)NULL; - istring_index = istring_size = bufn = tflag = 0; - - for (skip_ctlesc = skip_ctlnul = 0, s = ifs_value; s && *s; s++) - skip_ctlesc |= *s == CTLESC, skip_ctlnul |= *s == CTLNUL; - - /* Read the output of the command through the pipe. This may need to be - changed to understand multibyte characters in the future. */ - while (1) - { - if (fd < 0) - break; - if (--bufn <= 0) - { - bufn = zread (fd, buf, sizeof (buf)); - if (bufn <= 0) - break; - bufp = buf; - } - c = *bufp++; - - if (c == 0) - { -#if 0 - internal_warning ("read_comsub: ignored null byte in input"); -#endif - continue; - } - - /* Add the character to ISTRING, possibly after resizing it. */ - RESIZE_MALLOCED_BUFFER (istring, istring_index, 2, istring_size, DEFAULT_ARRAY_SIZE); - - /* This is essentially quote_string inline */ - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) /* || c == CTLESC || c == CTLNUL */) - istring[istring_index++] = CTLESC; - /* Escape CTLESC and CTLNUL in the output to protect those characters - from the rest of the word expansions (word splitting and globbing.) - This is essentially quote_escapes inline. */ - else if (skip_ctlesc == 0 && c == CTLESC) - { - tflag |= W_HASCTLESC; - istring[istring_index++] = CTLESC; - } - else if ((skip_ctlnul == 0 && c == CTLNUL) || (c == ' ' && (ifs_value && *ifs_value == 0))) - istring[istring_index++] = CTLESC; - - istring[istring_index++] = c; - -#if 0 -#if defined (__CYGWIN__) - if (c == '\n' && istring_index > 1 && istring[istring_index - 2] == '\r') - { - istring_index--; - istring[istring_index - 1] = '\n'; - } -#endif -#endif - } - - if (istring) - istring[istring_index] = '\0'; - - /* If we read no output, just return now and save ourselves some - trouble. */ - if (istring_index == 0) - { - FREE (istring); - if (rflag) - *rflag = tflag; - return (char *)NULL; - } - - /* Strip trailing newlines from the output of the command. */ - if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) - { - while (istring_index > 0) - { - if (istring[istring_index - 1] == '\n') - { - --istring_index; - - /* If the newline was quoted, remove the quoting char. */ - if (istring[istring_index - 1] == CTLESC) - --istring_index; - } - else - break; - } - istring[istring_index] = '\0'; - } - else - strip_trailing (istring, istring_index - 1, 1); - - if (rflag) - *rflag = tflag; - return istring; -} - -/* Perform command substitution on STRING. This returns a WORD_DESC * with the - contained string possibly quoted. */ -WORD_DESC * -command_substitute (string, quoted) - char *string; - int quoted; -{ - pid_t pid, old_pid, old_pipeline_pgrp, old_async_pid; - char *istring; - int result, fildes[2], function_value, pflags, rc, tflag; - WORD_DESC *ret; - - istring = (char *)NULL; - - /* Don't fork () if there is no need to. In the case of no command to - run, just return NULL. */ - if (!string || !*string || (string[0] == '\n' && !string[1])) - return ((WORD_DESC *)NULL); - - if (wordexp_only && read_but_dont_execute) - { - last_command_exit_value = EX_WEXPCOMSUB; - jump_to_top_level (EXITPROG); - } - - /* We're making the assumption here that the command substitution will - eventually run a command from the file system. Since we'll run - maybe_make_export_env in this subshell before executing that command, - the parent shell and any other shells it starts will have to remake - the environment. If we make it before we fork, other shells won't - have to. Don't bother if we have any temporary variable assignments, - though, because the export environment will be remade after this - command completes anyway, but do it if all the words to be expanded - are variable assignments. */ - if (subst_assign_varlist == 0 || garglist == 0) - maybe_make_export_env (); /* XXX */ - - /* Flags to pass to parse_and_execute() */ - pflags = (interactive && sourcelevel == 0) ? SEVAL_RESETLINE : 0; - - /* Pipe the output of executing STRING into the current shell. */ - if (pipe (fildes) < 0) - { - sys_error (_("cannot make pipe for command substitution")); - goto error_exit; - } - - old_pid = last_made_pid; -#if defined (JOB_CONTROL) - old_pipeline_pgrp = pipeline_pgrp; - /* Don't reset the pipeline pgrp if we're already a subshell in a pipeline. */ - if ((subshell_environment & SUBSHELL_PIPE) == 0) - pipeline_pgrp = shell_pgrp; - cleanup_the_pipeline (); -#endif /* JOB_CONTROL */ - - old_async_pid = last_asynchronous_pid; - pid = make_child ((char *)NULL, subshell_environment&SUBSHELL_ASYNC); - last_asynchronous_pid = old_async_pid; - - if (pid == 0) - { - /* Reset the signal handlers in the child, but don't free the - trap strings. Set a flag noting that we have to free the - trap strings if we run trap to change a signal disposition. */ - reset_signal_handlers (); - subshell_environment |= SUBSHELL_RESETTRAP; - } - -#if defined (JOB_CONTROL) - /* XXX DO THIS ONLY IN PARENT ? XXX */ - set_sigchld_handler (); - stop_making_children (); - if (pid != 0) - pipeline_pgrp = old_pipeline_pgrp; -#else - stop_making_children (); -#endif /* JOB_CONTROL */ - - if (pid < 0) - { - sys_error (_("cannot make child for command substitution")); - error_exit: - - FREE (istring); - close (fildes[0]); - close (fildes[1]); - return ((WORD_DESC *)NULL); - } - - if (pid == 0) - { - set_sigint_handler (); /* XXX */ - - free_pushed_string_input (); - - if (dup2 (fildes[1], 1) < 0) - { - sys_error (_("command_substitute: cannot duplicate pipe as fd 1")); - exit (EXECUTION_FAILURE); - } - - /* If standard output is closed in the parent shell - (such as after `exec >&-'), file descriptor 1 will be - the lowest available file descriptor, and end up in - fildes[0]. This can happen for stdin and stderr as well, - but stdout is more important -- it will cause no output - to be generated from this command. */ - if ((fildes[1] != fileno (stdin)) && - (fildes[1] != fileno (stdout)) && - (fildes[1] != fileno (stderr))) - close (fildes[1]); - - if ((fildes[0] != fileno (stdin)) && - (fildes[0] != fileno (stdout)) && - (fildes[0] != fileno (stderr))) - close (fildes[0]); - -#ifdef __CYGWIN__ - /* Let stdio know the fd may have changed from text to binary mode, and - make sure to preserve stdout line buffering. */ - freopen (NULL, "w", stdout); - sh_setlinebuf (stdout); -#endif /* __CYGWIN__ */ - - /* The currently executing shell is not interactive. */ - interactive = 0; - - /* This is a subshell environment. */ - subshell_environment |= SUBSHELL_COMSUB; - - /* When not in POSIX mode, command substitution does not inherit - the -e flag. */ - if (posixly_correct == 0) - exit_immediately_on_error = 0; - - remove_quoted_escapes (string); - - startup_state = 2; /* see if we can avoid a fork */ - /* Give command substitution a place to jump back to on failure, - so we don't go back up to main (). */ - result = setjmp (top_level); -itrace("command_substitute: %s", string); - /* If we're running a command substitution inside a shell function, - trap `return' so we don't return from the function in the subshell - and go off to never-never land. */ - if (result == 0 && return_catch_flag) - function_value = setjmp (return_catch); - else - function_value = 0; - - if (result == ERREXIT) - rc = last_command_exit_value; - else if (result == EXITPROG) - rc = last_command_exit_value; - else if (result) - rc = EXECUTION_FAILURE; - else if (function_value) - rc = return_catch_value; - else - { - subshell_level++; - rc = parse_and_execute (string, "command substitution", pflags|SEVAL_NOHIST); - subshell_level--; - } - - last_command_exit_value = rc; - rc = run_exit_trap (); -#if defined (PROCESS_SUBSTITUTION) - unlink_fifo_list (); -#endif - exit (rc); - } - else - { -#if defined (JOB_CONTROL) && defined (PGRP_PIPE) - close_pgrp_pipe (); -#endif /* JOB_CONTROL && PGRP_PIPE */ - - close (fildes[1]); - - tflag = 0; - istring = read_comsub (fildes[0], quoted, &tflag); - - close (fildes[0]); - - current_command_subst_pid = pid; - last_command_exit_value = wait_for (pid); - last_command_subst_pid = pid; - last_made_pid = old_pid; - -#if defined (JOB_CONTROL) - /* If last_command_exit_value > 128, then the substituted command - was terminated by a signal. If that signal was SIGINT, then send - SIGINT to ourselves. This will break out of loops, for instance. */ - if (last_command_exit_value == (128 + SIGINT) && last_command_exit_signal == SIGINT) - kill (getpid (), SIGINT); - - /* wait_for gives the terminal back to shell_pgrp. If some other - process group should have it, give it away to that group here. - pipeline_pgrp is non-zero only while we are constructing a - pipline, so what we are concerned about is whether or not that - pipeline was started in the background. A pipeline started in - the background should never get the tty back here. */ - if (interactive && pipeline_pgrp != (pid_t)0 && (subshell_environment & SUBSHELL_ASYNC) == 0) - give_terminal_to (pipeline_pgrp, 0); -#endif /* JOB_CONTROL */ - - ret = alloc_word_desc (); - ret->word = istring; - ret->flags = tflag; - - return ret; - } -} - -/******************************************************** - * * - * Utility functions for parameter expansion * - * * - ********************************************************/ - -#if defined (ARRAY_VARS) - -static arrayind_t -array_length_reference (s) - char *s; -{ - int len; - arrayind_t ind; - char *akey; - char *t, c; - ARRAY *array; - HASH_TABLE *h; - SHELL_VAR *var; - - var = array_variable_part (s, &t, &len); - - /* If unbound variables should generate an error, report one and return - failure. */ - if ((var == 0 || (assoc_p (var) == 0 && array_p (var) == 0)) && unbound_vars_is_error) - { - c = *--t; - *t = '\0'; - last_command_exit_value = EXECUTION_FAILURE; - err_unboundvar (s); - *t = c; - return (-1); - } - else if (var == 0) - return 0; - - /* We support a couple of expansions for variables that are not arrays. - We'll return the length of the value for v[0], and 1 for v[@] or - v[*]. Return 0 for everything else. */ - - array = array_p (var) ? array_cell (var) : (ARRAY *)NULL; - h = assoc_p (var) ? assoc_cell (var) : (HASH_TABLE *)NULL; - - if (ALL_ELEMENT_SUB (t[0]) && t[1] == ']') - { - if (assoc_p (var)) - return (h ? assoc_num_elements (h) : 0); - else if (array_p (var)) - return (array ? array_num_elements (array) : 0); - else - return (var_isset (var) ? 1 : 0); - } - - if (assoc_p (var)) - { - t[len - 1] = '\0'; - akey = expand_assignment_string_to_string (t, 0); /* [ */ - t[len - 1] = ']'; - if (akey == 0 || *akey == 0) - { - err_badarraysub (t); - FREE (akey); - return (-1); - } - t = assoc_reference (assoc_cell (var), akey); - free (akey); - } - else - { - ind = array_expand_index (var, t, len); - if (ind < 0) - { - err_badarraysub (t); - return (-1); - } - if (array_p (var)) - t = array_reference (array, ind); - else - t = (ind == 0) ? value_cell (var) : (char *)NULL; - } - - len = MB_STRLEN (t); - return (len); -} -#endif /* ARRAY_VARS */ - -static int -valid_brace_expansion_word (name, var_is_special) - char *name; - int var_is_special; -{ - if (DIGIT (*name) && all_digits (name)) - return 1; - else if (var_is_special) - return 1; -#if defined (ARRAY_VARS) - else if (valid_array_reference (name)) - return 1; -#endif /* ARRAY_VARS */ - else if (legal_identifier (name)) - return 1; - else - return 0; -} - -static int -chk_atstar (name, quoted, quoted_dollar_atp, contains_dollar_at) - char *name; - int quoted; - int *quoted_dollar_atp, *contains_dollar_at; -{ - char *temp1; - - if (name == 0) - { - if (quoted_dollar_atp) - *quoted_dollar_atp = 0; - if (contains_dollar_at) - *contains_dollar_at = 0; - return 0; - } - - /* check for $@ and $* */ - if (name[0] == '@' && name[1] == 0) - { - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && quoted_dollar_atp) - *quoted_dollar_atp = 1; - if (contains_dollar_at) - *contains_dollar_at = 1; - return 1; - } - else if (name[0] == '*' && name[1] == '\0' && quoted == 0) - { - if (contains_dollar_at) - *contains_dollar_at = 1; - return 1; - } - - /* Now check for ${array[@]} and ${array[*]} */ -#if defined (ARRAY_VARS) - else if (valid_array_reference (name)) - { - temp1 = mbschr (name, '['); - if (temp1 && temp1[1] == '@' && temp1[2] == ']') - { - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && quoted_dollar_atp) - *quoted_dollar_atp = 1; - if (contains_dollar_at) - *contains_dollar_at = 1; - return 1; - } /* [ */ - /* ${array[*]}, when unquoted, should be treated like ${array[@]}, - which should result in separate words even when IFS is unset. */ - if (temp1 && temp1[1] == '*' && temp1[2] == ']' && quoted == 0) - { - if (contains_dollar_at) - *contains_dollar_at = 1; - return 1; - } - } -#endif - return 0; -} - -/* Parameter expand NAME, and return a new string which is the expansion, - or NULL if there was no expansion. - VAR_IS_SPECIAL is non-zero if NAME is one of the special variables in - the shell, e.g., "@", "$", "*", etc. QUOTED, if non-zero, means that - NAME was found inside of a double-quoted expression. */ -static WORD_DESC * -parameter_brace_expand_word (name, var_is_special, quoted, pflags, indp) - char *name; - int var_is_special, quoted, pflags; - arrayind_t *indp; -{ - WORD_DESC *ret; - char *temp, *tt; - intmax_t arg_index; - SHELL_VAR *var; - int atype, rflags; - arrayind_t ind; - - ret = 0; - temp = 0; - rflags = 0; - - if (indp) - *indp = INTMAX_MIN; - - /* Handle multiple digit arguments, as in ${11}. */ - if (legal_number (name, &arg_index)) - { - tt = get_dollar_var_value (arg_index); - if (tt) - temp = (*tt && (quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT))) - ? quote_string (tt) - : quote_escapes (tt); - else - temp = (char *)NULL; - FREE (tt); - } - else if (var_is_special) /* ${@} */ - { - int sindex; - tt = (char *)xmalloc (2 + strlen (name)); - tt[sindex = 0] = '$'; - strcpy (tt + 1, name); - - ret = param_expand (tt, &sindex, quoted, (int *)NULL, (int *)NULL, - (int *)NULL, (int *)NULL, pflags); - free (tt); - } -#if defined (ARRAY_VARS) - else if (valid_array_reference (name)) - { - /* XXX - does this leak if name[@] or name[*]? */ - temp = array_value (name, quoted, 0, &atype, &ind); - if (atype == 0 && temp) - { - temp = (*temp && (quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT))) - ? quote_string (temp) - : quote_escapes (temp); - rflags |= W_ARRAYIND; - if (indp) - *indp = ind; - } - else if (atype == 1 && temp && QUOTED_NULL (temp) && (quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT))) - rflags |= W_HASQUOTEDNULL; - } -#endif - else if (var = find_variable (name)) - { - if (var_isset (var) && invisible_p (var) == 0) - { -#if defined (ARRAY_VARS) - if (assoc_p (var)) - temp = assoc_reference (assoc_cell (var), "0"); - else if (array_p (var)) - temp = array_reference (array_cell (var), 0); - else - temp = value_cell (var); -#else - temp = value_cell (var); -#endif - - if (temp) - temp = (*temp && (quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT))) - ? quote_string (temp) - : quote_escapes (temp); - } - else - temp = (char *)NULL; - } - else - temp = (char *)NULL; - - if (ret == 0) - { - ret = alloc_word_desc (); - ret->word = temp; - ret->flags |= rflags; - } - return ret; -} - -/* Expand an indirect reference to a variable: ${!NAME} expands to the - value of the variable whose name is the value of NAME. */ -static WORD_DESC * -parameter_brace_expand_indir (name, var_is_special, quoted, quoted_dollar_atp, contains_dollar_at) - char *name; - int var_is_special, quoted; - int *quoted_dollar_atp, *contains_dollar_at; -{ - char *temp, *t; - WORD_DESC *w; - - w = parameter_brace_expand_word (name, var_is_special, quoted, PF_IGNUNBOUND, 0); - t = w->word; - /* Have to dequote here if necessary */ - if (t) - { - temp = (quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT)) - ? dequote_string (t) - : dequote_escapes (t); - free (t); - t = temp; - } - dispose_word_desc (w); - - chk_atstar (t, quoted, quoted_dollar_atp, contains_dollar_at); - if (t == 0) - return (WORD_DESC *)NULL; - - w = parameter_brace_expand_word (t, SPECIAL_VAR(t, 0), quoted, 0, 0); - free (t); - - return w; -} - -/* Expand the right side of a parameter expansion of the form ${NAMEcVALUE}, - depending on the value of C, the separating character. C can be one of - "-", "+", or "=". QUOTED is true if the entire brace expression occurs - between double quotes. */ -static WORD_DESC * -parameter_brace_expand_rhs (name, value, c, quoted, qdollaratp, hasdollarat) - char *name, *value; - int c, quoted, *qdollaratp, *hasdollarat; -{ - WORD_DESC *w; - WORD_LIST *l; - char *t, *t1, *temp; - int hasdol; - - /* If the entire expression is between double quotes, we want to treat - the value as a double-quoted string, with the exception that we strip - embedded unescaped double quotes (for sh backwards compatibility). */ - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && *value) - { - hasdol = 0; - temp = string_extract_double_quoted (value, &hasdol, 1); - } - else - temp = value; - - w = alloc_word_desc (); - hasdol = 0; - /* XXX was 0 not quoted */ - l = *temp ? expand_string_for_rhs (temp, quoted, &hasdol, (int *)NULL) - : (WORD_LIST *)0; - if (hasdollarat) - *hasdollarat = hasdol || (l && l->next); - if (temp != value) - free (temp); - if (l) - { - /* The expansion of TEMP returned something. We need to treat things - slightly differently if HASDOL is non-zero. If we have "$@", the - individual words have already been quoted. We need to turn them - into a string with the words separated by the first character of - $IFS without any additional quoting, so string_list_dollar_at won't - do the right thing. We use string_list_dollar_star instead. */ - temp = (hasdol || l->next) ? string_list_dollar_star (l) : string_list (l); - - /* If l->next is not null, we know that TEMP contained "$@", since that - is the only expansion that creates more than one word. */ - if (qdollaratp && ((hasdol && quoted) || l->next)) - *qdollaratp = 1; - dispose_words (l); - } - else if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && hasdol) - { - /* The brace expansion occurred between double quotes and there was - a $@ in TEMP. It does not matter if the $@ is quoted, as long as - it does not expand to anything. In this case, we want to return - a quoted empty string. */ - temp = make_quoted_char ('\0'); - w->flags |= W_HASQUOTEDNULL; - } - else - temp = (char *)NULL; - - if (c == '-' || c == '+') - { - w->word = temp; - return w; - } - - /* c == '=' */ - t = temp ? savestring (temp) : savestring (""); - t1 = dequote_string (t); - free (t); -#if defined (ARRAY_VARS) - if (valid_array_reference (name)) - assign_array_element (name, t1, 0); - else -#endif /* ARRAY_VARS */ - bind_variable (name, t1, 0); - - /* From Posix group discussion Feb-March 2010. Issue 7 0000221 */ - free (temp); - - w->word = t1; - return w; -} - -/* Deal with the right hand side of a ${name:?value} expansion in the case - that NAME is null or not set. If VALUE is non-null it is expanded and - used as the error message to print, otherwise a standard message is - printed. */ -static void -parameter_brace_expand_error (name, value) - char *name, *value; -{ - WORD_LIST *l; - char *temp; - - last_command_exit_value = EXECUTION_FAILURE; /* ensure it's non-zero */ - if (value && *value) - { - l = expand_string (value, 0); - temp = string_list (l); - report_error ("%s: %s", name, temp ? temp : ""); /* XXX was value not "" */ - FREE (temp); - dispose_words (l); - } - else - report_error (_("%s: parameter null or not set"), name); - - /* Free the data we have allocated during this expansion, since we - are about to longjmp out. */ - free (name); - FREE (value); -} - -/* Return 1 if NAME is something for which parameter_brace_expand_length is - OK to do. */ -static int -valid_length_expression (name) - char *name; -{ - return (name[1] == '\0' || /* ${#} */ - ((sh_syntaxtab[(unsigned char) name[1]] & CSPECVAR) && name[2] == '\0') || /* special param */ - (DIGIT (name[1]) && all_digits (name + 1)) || /* ${#11} */ -#if defined (ARRAY_VARS) - valid_array_reference (name + 1) || /* ${#a[7]} */ -#endif - legal_identifier (name + 1)); /* ${#PS1} */ -} - -/* Handle the parameter brace expansion that requires us to return the - length of a parameter. */ -static intmax_t -parameter_brace_expand_length (name) - char *name; -{ - char *t, *newname; - intmax_t number, arg_index; - WORD_LIST *list; -#if defined (ARRAY_VARS) - SHELL_VAR *var; -#endif - - if (name[1] == '\0') /* ${#} */ - number = number_of_args (); - else if ((name[1] == '@' || name[1] == '*') && name[2] == '\0') /* ${#@}, ${#*} */ - number = number_of_args (); - else if ((sh_syntaxtab[(unsigned char) name[1]] & CSPECVAR) && name[2] == '\0') - { - /* Take the lengths of some of the shell's special parameters. */ - switch (name[1]) - { - case '-': - t = which_set_flags (); - break; - case '?': - t = itos (last_command_exit_value); - break; - case '$': - t = itos (dollar_dollar_pid); - break; - case '!': - if (last_asynchronous_pid == NO_PID) - t = (char *)NULL; /* XXX - error if set -u set? */ - else - t = itos (last_asynchronous_pid); - break; - case '#': - t = itos (number_of_args ()); - break; - } - number = STRLEN (t); - FREE (t); - } -#if defined (ARRAY_VARS) - else if (valid_array_reference (name + 1)) - number = array_length_reference (name + 1); -#endif /* ARRAY_VARS */ - else - { - number = 0; - - if (legal_number (name + 1, &arg_index)) /* ${#1} */ - { - t = get_dollar_var_value (arg_index); - if (t == 0 && unbound_vars_is_error) - return INTMAX_MIN; - number = MB_STRLEN (t); - FREE (t); - } -#if defined (ARRAY_VARS) - else if ((var = find_variable (name + 1)) && (invisible_p (var) == 0) && (array_p (var) || assoc_p (var))) - { - if (assoc_p (var)) - t = assoc_reference (assoc_cell (var), "0"); - else - t = array_reference (array_cell (var), 0); - if (t == 0 && unbound_vars_is_error) - return INTMAX_MIN; - number = MB_STRLEN (t); - } -#endif - else /* ${#PS1} */ - { - newname = savestring (name); - newname[0] = '$'; - list = expand_string (newname, Q_DOUBLE_QUOTES); - t = list ? string_list (list) : (char *)NULL; - free (newname); - if (list) - dispose_words (list); - - number = t ? MB_STRLEN (t) : 0; - FREE (t); - } - } - - return (number); -} - -/* Skip characters in SUBSTR until DELIM. SUBSTR is an arithmetic expression, - so we do some ad-hoc parsing of an arithmetic expression to find - the first DELIM, instead of using strchr(3). Two rules: - 1. If the substring contains a `(', read until closing `)'. - 2. If the substring contains a `?', read past one `:' for each `?'. -*/ - -static char * -skiparith (substr, delim) - char *substr; - int delim; -{ - size_t sublen; - int skipcol, pcount, i; - DECLARE_MBSTATE; - - sublen = strlen (substr); - i = skipcol = pcount = 0; - while (substr[i]) - { - /* Balance parens */ - if (substr[i] == LPAREN) - { - pcount++; - i++; - continue; - } - if (substr[i] == RPAREN && pcount) - { - pcount--; - i++; - continue; - } - if (pcount) - { - ADVANCE_CHAR (substr, sublen, i); - continue; - } - - /* Skip one `:' for each `?' */ - if (substr[i] == ':' && skipcol) - { - skipcol--; - i++; - continue; - } - if (substr[i] == delim) - break; - if (substr[i] == '?') - { - skipcol++; - i++; - continue; - } - ADVANCE_CHAR (substr, sublen, i); - } - - return (substr + i); -} - -/* Verify and limit the start and end of the desired substring. If - VTYPE == 0, a regular shell variable is being used; if it is 1, - then the positional parameters are being used; if it is 2, then - VALUE is really a pointer to an array variable that should be used. - Return value is 1 if both values were OK, 0 if there was a problem - with an invalid expression, or -1 if the values were out of range. */ -static int -verify_substring_values (v, value, substr, vtype, e1p, e2p) - SHELL_VAR *v; - char *value, *substr; - int vtype; - intmax_t *e1p, *e2p; -{ - char *t, *temp1, *temp2; - arrayind_t len; - int expok; -#if defined (ARRAY_VARS) - ARRAY *a; - HASH_TABLE *h; -#endif - - /* duplicate behavior of strchr(3) */ - t = skiparith (substr, ':'); - if (*t && *t == ':') - *t = '\0'; - else - t = (char *)0; - - temp1 = expand_arith_string (substr, Q_DOUBLE_QUOTES); - *e1p = evalexp (temp1, &expok); - free (temp1); - if (expok == 0) - return (0); - - len = -1; /* paranoia */ - switch (vtype) - { - case VT_VARIABLE: - case VT_ARRAYMEMBER: - len = MB_STRLEN (value); - break; - case VT_POSPARMS: - len = number_of_args () + 1; - if (*e1p == 0) - len++; /* add one arg if counting from $0 */ - break; -#if defined (ARRAY_VARS) - case VT_ARRAYVAR: - /* For arrays, the first value deals with array indices. Negative - offsets count from one past the array's maximum index. Associative - arrays treat the number of elements as the maximum index. */ - if (assoc_p (v)) - { - h = assoc_cell (v); - len = assoc_num_elements (h) + (*e1p < 0); - } - else - { - a = (ARRAY *)value; - len = array_max_index (a) + (*e1p < 0); /* arrays index from 0 to n - 1 */ - } - break; -#endif - } - - if (len == -1) /* paranoia */ - return -1; - - if (*e1p < 0) /* negative offsets count from end */ - *e1p += len; - - if (*e1p > len || *e1p < 0) - return (-1); - -#if defined (ARRAY_VARS) - /* For arrays, the second offset deals with the number of elements. */ - if (vtype == VT_ARRAYVAR) - len = assoc_p (v) ? assoc_num_elements (h) : array_num_elements (a); -#endif - - if (t) - { - t++; - temp2 = savestring (t); - temp1 = expand_arith_string (temp2, Q_DOUBLE_QUOTES); - free (temp2); - t[-1] = ':'; - *e2p = evalexp (temp1, &expok); - free (temp1); - if (expok == 0) - return (0); - if ((vtype == VT_ARRAYVAR || vtype == VT_POSPARMS) && *e2p < 0) - { - internal_error (_("%s: substring expression < 0"), t); - return (0); - } -#if defined (ARRAY_VARS) - /* In order to deal with sparse arrays, push the intelligence about how - to deal with the number of elements desired down to the array- - specific functions. */ - if (vtype != VT_ARRAYVAR) -#endif - { - if (*e2p < 0) - { - *e2p += len; - if (*e2p < 0 || *e2p < *e1p) - { - internal_error (_("%s: substring expression < 0"), t); - return (0); - } - } - else - *e2p += *e1p; /* want E2 chars starting at E1 */ - if (*e2p > len) - *e2p = len; - } - } - else - *e2p = len; - - return (1); -} - -/* Return the type of variable specified by VARNAME (simple variable, - positional param, or array variable). Also return the value specified - by VARNAME (value of a variable or a reference to an array element). - QUOTED is the standard description of quoting state, using Q_* defines. - FLAGS is currently a set of flags to pass to array_value. If IND is - non-null and not INTMAX_MIN, and FLAGS includes AV_USEIND, IND is - passed to array_value so the array index is not computed again. - If this returns VT_VARIABLE, the caller assumes that CTLESC and CTLNUL - characters in the value are quoted with CTLESC and takes appropriate - steps. For convenience, *VALP is set to the dequoted VALUE. */ -static int -get_var_and_type (varname, value, ind, quoted, flags, varp, valp) - char *varname, *value; - arrayind_t ind; - int quoted, flags; - SHELL_VAR **varp; - char **valp; -{ - int vtype; - char *temp; -#if defined (ARRAY_VARS) - SHELL_VAR *v; -#endif - arrayind_t lind; - - /* This sets vtype to VT_VARIABLE or VT_POSPARMS */ - vtype = (varname[0] == '@' || varname[0] == '*') && varname[1] == '\0'; - if (vtype == VT_POSPARMS && varname[0] == '*') - vtype |= VT_STARSUB; - *varp = (SHELL_VAR *)NULL; - -#if defined (ARRAY_VARS) - if (valid_array_reference (varname)) - { - v = array_variable_part (varname, &temp, (int *)0); - /* If we want to signal array_value to use an already-computed index, - set LIND to that index */ - lind = (ind != INTMAX_MIN && (flags & AV_USEIND)) ? ind : 0; - if (v && (array_p (v) || assoc_p (v))) - { /* [ */ - if (ALL_ELEMENT_SUB (temp[0]) && temp[1] == ']') - { - /* Callers have to differentiate betwen indexed and associative */ - vtype = VT_ARRAYVAR; - if (temp[0] == '*') - vtype |= VT_STARSUB; - *valp = array_p (v) ? (char *)array_cell (v) : (char *)assoc_cell (v); - } - else - { - vtype = VT_ARRAYMEMBER; - *valp = array_value (varname, Q_DOUBLE_QUOTES, flags, (int *)NULL, &lind); - } - *varp = v; - } - else if (v && (ALL_ELEMENT_SUB (temp[0]) && temp[1] == ']')) - { - vtype = VT_VARIABLE; - *varp = v; - if (quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT)) - *valp = dequote_string (value); - else - *valp = dequote_escapes (value); - } - else - { - vtype = VT_ARRAYMEMBER; - *varp = v; - *valp = array_value (varname, Q_DOUBLE_QUOTES, flags, (int *)NULL, &lind); - } - } - else if ((v = find_variable (varname)) && (invisible_p (v) == 0) && (assoc_p (v) || array_p (v))) - { - vtype = VT_ARRAYMEMBER; - *varp = v; - *valp = assoc_p (v) ? assoc_reference (assoc_cell (v), "0") : array_reference (array_cell (v), 0); - } - else -#endif - { - if (value && vtype == VT_VARIABLE) - { - if (quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT)) - *valp = dequote_string (value); - else - *valp = dequote_escapes (value); - } - else - *valp = value; - } - - return vtype; -} - -/******************************************************/ -/* */ -/* Functions to extract substrings of variable values */ -/* */ -/******************************************************/ - -#if defined (HANDLE_MULTIBYTE) -/* Character-oriented rather than strictly byte-oriented substrings. S and - E, rather being strict indices into STRING, indicate character (possibly - multibyte character) positions that require calculation. - Used by the ${param:offset[:length]} expansion. */ -static char * -mb_substring (string, s, e) - char *string; - int s, e; -{ - char *tt; - int start, stop, i, slen; - DECLARE_MBSTATE; - - start = 0; - /* Don't need string length in ADVANCE_CHAR unless multibyte chars possible. */ - slen = (MB_CUR_MAX > 1) ? STRLEN (string) : 0; - - i = s; - while (string[start] && i--) - ADVANCE_CHAR (string, slen, start); - stop = start; - i = e - s; - while (string[stop] && i--) - ADVANCE_CHAR (string, slen, stop); - tt = substring (string, start, stop); - return tt; -} -#endif - -/* Process a variable substring expansion: ${name:e1[:e2]}. If VARNAME - is `@', use the positional parameters; otherwise, use the value of - VARNAME. If VARNAME is an array variable, use the array elements. */ - -static char * -parameter_brace_substring (varname, value, ind, substr, quoted, flags) - char *varname, *value; - int ind; - char *substr; - int quoted, flags; -{ - intmax_t e1, e2; - int vtype, r, starsub; - char *temp, *val, *tt, *oname; - SHELL_VAR *v; - - if (value == 0) - return ((char *)NULL); - - oname = this_command_name; - this_command_name = varname; - - vtype = get_var_and_type (varname, value, ind, quoted, flags, &v, &val); - if (vtype == -1) - { - this_command_name = oname; - return ((char *)NULL); - } - - starsub = vtype & VT_STARSUB; - vtype &= ~VT_STARSUB; - - r = verify_substring_values (v, val, substr, vtype, &e1, &e2); - this_command_name = oname; - if (r <= 0) - { - if (vtype == VT_VARIABLE) - FREE (val); - return ((r == 0) ? &expand_param_error : (char *)NULL); - } - - switch (vtype) - { - case VT_VARIABLE: - case VT_ARRAYMEMBER: -#if defined (HANDLE_MULTIBYTE) - if (MB_CUR_MAX > 1) - tt = mb_substring (val, e1, e2); - else -#endif - tt = substring (val, e1, e2); - - if (vtype == VT_VARIABLE) - FREE (val); - if (quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT)) - temp = quote_string (tt); - else - temp = tt ? quote_escapes (tt) : (char *)NULL; - FREE (tt); - break; - case VT_POSPARMS: - tt = pos_params (varname, e1, e2, quoted); - if ((quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT)) == 0) - { - temp = tt ? quote_escapes (tt) : (char *)NULL; - FREE (tt); - } - else - temp = tt; - break; -#if defined (ARRAY_VARS) - case VT_ARRAYVAR: - if (assoc_p (v)) - /* we convert to list and take first e2 elements starting at e1th - element -- officially undefined for now */ - temp = assoc_subrange (assoc_cell (v), e1, e2, starsub, quoted); - else - /* We want E2 to be the number of elements desired (arrays can be sparse, - so verify_substring_values just returns the numbers specified and we - rely on array_subrange to understand how to deal with them). */ - temp = array_subrange (array_cell (v), e1, e2, starsub, quoted); - /* array_subrange now calls array_quote_escapes as appropriate, so the - caller no longer needs to. */ - break; -#endif - default: - temp = (char *)NULL; - } - - return temp; -} - -/****************************************************************/ -/* */ -/* Functions to perform pattern substitution on variable values */ -/* */ -/****************************************************************/ - -static int -shouldexp_replacement (s) - char *s; -{ - register char *p; - - for (p = s; p && *p; p++) - { - if (*p == '\\') - p++; - else if (*p == '&') - return 1; - } - return 0; -} - -char * -pat_subst (string, pat, rep, mflags) - char *string, *pat, *rep; - int mflags; -{ - char *ret, *s, *e, *str, *rstr, *mstr; - int rsize, rptr, l, replen, mtype, rxpand, rslen, mlen; - - if (string == 0) - return (savestring ("")); - - mtype = mflags & MATCH_TYPEMASK; - -#if 0 /* bash-4.2 ? */ - rxpand = (rep && *rep) ? shouldexp_replacement (rep) : 0; -#else - rxpand = 0; -#endif - - /* Special cases: - * 1. A null pattern with mtype == MATCH_BEG means to prefix STRING - * with REP and return the result. - * 2. A null pattern with mtype == MATCH_END means to append REP to - * STRING and return the result. - * These don't understand or process `&' in the replacement string. - */ - if ((pat == 0 || *pat == 0) && (mtype == MATCH_BEG || mtype == MATCH_END)) - { - replen = STRLEN (rep); - l = STRLEN (string); - ret = (char *)xmalloc (replen + l + 2); - if (replen == 0) - strcpy (ret, string); - else if (mtype == MATCH_BEG) - { - strcpy (ret, rep); - strcpy (ret + replen, string); - } - else - { - strcpy (ret, string); - strcpy (ret + l, rep); - } - return (ret); - } - - ret = (char *)xmalloc (rsize = 64); - ret[0] = '\0'; - - for (replen = STRLEN (rep), rptr = 0, str = string;;) - { - if (match_pattern (str, pat, mtype, &s, &e) == 0) - break; - l = s - str; - - if (rxpand) - { - int x; - mlen = e - s; - mstr = xmalloc (mlen + 1); - for (x = 0; x < mlen; x++) - mstr[x] = s[x]; - mstr[mlen] = '\0'; - rstr = strcreplace (rep, '&', mstr, 0); - rslen = strlen (rstr); - } - else - { - rstr = rep; - rslen = replen; - } - - RESIZE_MALLOCED_BUFFER (ret, rptr, (l + rslen), rsize, 64); - - /* OK, now copy the leading unmatched portion of the string (from - str to s) to ret starting at rptr (the current offset). Then copy - the replacement string at ret + rptr + (s - str). Increment - rptr (if necessary) and str and go on. */ - if (l) - { - strncpy (ret + rptr, str, l); - rptr += l; - } - if (replen) - { - strncpy (ret + rptr, rstr, rslen); - rptr += rslen; - } - str = e; /* e == end of match */ - - if (rstr != rep) - free (rstr); - - if (((mflags & MATCH_GLOBREP) == 0) || mtype != MATCH_ANY) - break; - - if (s == e) - { - /* On a zero-length match, make sure we copy one character, since - we increment one character to avoid infinite recursion. */ - RESIZE_MALLOCED_BUFFER (ret, rptr, 1, rsize, 64); - ret[rptr++] = *str++; - e++; /* avoid infinite recursion on zero-length match */ - } - } - - /* Now copy the unmatched portion of the input string */ - if (str && *str) - { - RESIZE_MALLOCED_BUFFER (ret, rptr, STRLEN(str) + 1, rsize, 64); - strcpy (ret + rptr, str); - } - else - ret[rptr] = '\0'; - - return ret; -} - -/* Do pattern match and replacement on the positional parameters. */ -static char * -pos_params_pat_subst (string, pat, rep, mflags) - char *string, *pat, *rep; - int mflags; -{ - WORD_LIST *save, *params; - WORD_DESC *w; - char *ret; - int pchar, qflags; - - save = params = list_rest_of_args (); - if (save == 0) - return ((char *)NULL); - - for ( ; params; params = params->next) - { - ret = pat_subst (params->word->word, pat, rep, mflags); - w = alloc_word_desc (); - w->word = ret ? ret : savestring (""); - dispose_word (params->word); - params->word = w; - } - - pchar = (mflags & MATCH_STARSUB) == MATCH_STARSUB ? '*' : '@'; - qflags = (mflags & MATCH_QUOTED) == MATCH_QUOTED ? Q_DOUBLE_QUOTES : 0; - -#if 0 - if ((mflags & (MATCH_QUOTED|MATCH_STARSUB)) == (MATCH_QUOTED|MATCH_STARSUB)) - ret = string_list_dollar_star (quote_list (save)); - else if ((mflags & MATCH_STARSUB) == MATCH_STARSUB) - ret = string_list_dollar_star (save); - else if ((mflags & MATCH_QUOTED) == MATCH_QUOTED) - ret = string_list_dollar_at (save, qflags); - else - ret = string_list_dollar_star (save); -#else - ret = string_list_pos_params (pchar, save, qflags); -#endif - - dispose_words (save); - - return (ret); -} - -/* Perform pattern substitution on VALUE, which is the expansion of - VARNAME. PATSUB is an expression supplying the pattern to match - and the string to substitute. QUOTED is a flags word containing - the type of quoting currently in effect. */ -static char * -parameter_brace_patsub (varname, value, ind, patsub, quoted, flags) - char *varname, *value; - int ind; - char *patsub; - int quoted, flags; -{ - int vtype, mflags, starsub, delim; - char *val, *temp, *pat, *rep, *p, *lpatsub, *tt; - SHELL_VAR *v; - - if (value == 0) - return ((char *)NULL); - - this_command_name = varname; - - vtype = get_var_and_type (varname, value, ind, quoted, flags, &v, &val); - if (vtype == -1) - return ((char *)NULL); - - starsub = vtype & VT_STARSUB; - vtype &= ~VT_STARSUB; - - mflags = 0; - /* PATSUB is never NULL when this is called. */ - if (*patsub == '/') - { - mflags |= MATCH_GLOBREP; - patsub++; - } - - /* Malloc this because expand_string_if_necessary or one of the expansion - functions in its call chain may free it on a substitution error. */ - lpatsub = savestring (patsub); - - if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) - mflags |= MATCH_QUOTED; - - if (starsub) - mflags |= MATCH_STARSUB; - - /* If the pattern starts with a `/', make sure we skip over it when looking - for the replacement delimiter. */ - delim = skip_to_delim (lpatsub, ((*patsub == '/') ? 1 : 0), "/", 0); - if (lpatsub[delim] == '/') - { - lpatsub[delim] = 0; - rep = lpatsub + delim + 1; - } - else - rep = (char *)NULL; - - if (rep && *rep == '\0') - rep = (char *)NULL; - - /* Perform the same expansions on the pattern as performed by the - pattern removal expansions. */ - pat = getpattern (lpatsub, quoted, 1); - - if (rep) - { - if ((mflags & MATCH_QUOTED) == 0) - rep = expand_string_if_necessary (rep, quoted, expand_string_unsplit); - else - rep = expand_string_to_string_internal (rep, quoted, expand_string_unsplit); - } - - /* ksh93 doesn't allow the match specifier to be a part of the expanded - pattern. This is an extension. Make sure we don't anchor the pattern - at the beginning or end of the string if we're doing global replacement, - though. */ - p = pat; - if (mflags & MATCH_GLOBREP) - mflags |= MATCH_ANY; - else if (pat && pat[0] == '#') - { - mflags |= MATCH_BEG; - p++; - } - else if (pat && pat[0] == '%') - { - mflags |= MATCH_END; - p++; - } - else - mflags |= MATCH_ANY; - - /* OK, we now want to substitute REP for PAT in VAL. If - flags & MATCH_GLOBREP is non-zero, the substitution is done - everywhere, otherwise only the first occurrence of PAT is - replaced. The pattern matching code doesn't understand - CTLESC quoting CTLESC and CTLNUL so we use the dequoted variable - values passed in (VT_VARIABLE) so the pattern substitution - code works right. We need to requote special chars after - we're done for VT_VARIABLE and VT_ARRAYMEMBER, and for the - other cases if QUOTED == 0, since the posparams and arrays - indexed by * or @ do special things when QUOTED != 0. */ - - switch (vtype) - { - case VT_VARIABLE: - case VT_ARRAYMEMBER: - temp = pat_subst (val, p, rep, mflags); - if (vtype == VT_VARIABLE) - FREE (val); - if (temp) - { - tt = (mflags & MATCH_QUOTED) ? quote_string (temp) : quote_escapes (temp); - free (temp); - temp = tt; - } - break; - case VT_POSPARMS: - temp = pos_params_pat_subst (val, p, rep, mflags); - if (temp && (mflags & MATCH_QUOTED) == 0) - { - tt = quote_escapes (temp); - free (temp); - temp = tt; - } - break; -#if defined (ARRAY_VARS) - case VT_ARRAYVAR: - temp = assoc_p (v) ? assoc_patsub (assoc_cell (v), p, rep, mflags) - : array_patsub (array_cell (v), p, rep, mflags); - /* Don't call quote_escapes anymore; array_patsub calls - array_quote_escapes as appropriate before adding the - space separators; ditto for assoc_patsub. */ - break; -#endif - } - - FREE (pat); - FREE (rep); - free (lpatsub); - - return temp; -} - -/****************************************************************/ -/* */ -/* Functions to perform case modification on variable values */ -/* */ -/****************************************************************/ - -/* Do case modification on the positional parameters. */ - -static char * -pos_params_modcase (string, pat, modop, mflags) - char *string, *pat; - int modop; - int mflags; -{ - WORD_LIST *save, *params; - WORD_DESC *w; - char *ret; - int pchar, qflags; - - save = params = list_rest_of_args (); - if (save == 0) - return ((char *)NULL); - - for ( ; params; params = params->next) - { - ret = sh_modcase (params->word->word, pat, modop); - w = alloc_word_desc (); - w->word = ret ? ret : savestring (""); - dispose_word (params->word); - params->word = w; - } - - pchar = (mflags & MATCH_STARSUB) == MATCH_STARSUB ? '*' : '@'; - qflags = (mflags & MATCH_QUOTED) == MATCH_QUOTED ? Q_DOUBLE_QUOTES : 0; - - ret = string_list_pos_params (pchar, save, qflags); - dispose_words (save); - - return (ret); -} - -/* Perform case modification on VALUE, which is the expansion of - VARNAME. MODSPEC is an expression supplying the type of modification - to perform. QUOTED is a flags word containing the type of quoting - currently in effect. */ -static char * -parameter_brace_casemod (varname, value, ind, modspec, patspec, quoted, flags) - char *varname, *value; - int ind, modspec; - char *patspec; - int quoted, flags; -{ - int vtype, starsub, modop, mflags, x; - char *val, *temp, *pat, *p, *lpat, *tt; - SHELL_VAR *v; - - if (value == 0) - return ((char *)NULL); - - this_command_name = varname; - - vtype = get_var_and_type (varname, value, ind, quoted, flags, &v, &val); - if (vtype == -1) - return ((char *)NULL); - - starsub = vtype & VT_STARSUB; - vtype &= ~VT_STARSUB; - - modop = 0; - mflags = 0; - if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) - mflags |= MATCH_QUOTED; - if (starsub) - mflags |= MATCH_STARSUB; - - p = patspec; - if (modspec == '^') - { - x = p && p[0] == modspec; - modop = x ? CASE_UPPER : CASE_UPFIRST; - p += x; - } - else if (modspec == ',') - { - x = p && p[0] == modspec; - modop = x ? CASE_LOWER : CASE_LOWFIRST; - p += x; - } - else if (modspec == '~') - { - x = p && p[0] == modspec; - modop = x ? CASE_TOGGLEALL : CASE_TOGGLE; - p += x; - } - - lpat = p ? savestring (p) : 0; - /* Perform the same expansions on the pattern as performed by the - pattern removal expansions. FOR LATER */ - pat = lpat ? getpattern (lpat, quoted, 1) : 0; - - /* OK, now we do the case modification. */ - switch (vtype) - { - case VT_VARIABLE: - case VT_ARRAYMEMBER: - temp = sh_modcase (val, pat, modop); - if (vtype == VT_VARIABLE) - FREE (val); - if (temp) - { - tt = (mflags & MATCH_QUOTED) ? quote_string (temp) : quote_escapes (temp); - free (temp); - temp = tt; - } - break; - - case VT_POSPARMS: - temp = pos_params_modcase (val, pat, modop, mflags); - if (temp && (mflags & MATCH_QUOTED) == 0) - { - tt = quote_escapes (temp); - free (temp); - temp = tt; - } - break; - -#if defined (ARRAY_VARS) - case VT_ARRAYVAR: - temp = assoc_p (v) ? assoc_modcase (assoc_cell (v), pat, modop, mflags) - : array_modcase (array_cell (v), pat, modop, mflags); - /* Don't call quote_escapes; array_modcase calls array_quote_escapes - as appropriate before adding the space separators; ditto for - assoc_modcase. */ - break; -#endif - } - - FREE (pat); - free (lpat); - - return temp; -} - -/* Check for unbalanced parens in S, which is the contents of $(( ... )). If - any occur, this must be a nested command substitution, so return 0. - Otherwise, return 1. A valid arithmetic expression must always have a - ( before a matching ), so any cases where there are more right parens - means that this must not be an arithmetic expression, though the parser - will not accept it without a balanced total number of parens. */ -static int -chk_arithsub (s, len) - const char *s; - int len; -{ - int i, count; - DECLARE_MBSTATE; - - i = count = 0; - while (i < len) - { - if (s[i] == LPAREN) - count++; - else if (s[i] == RPAREN) - { - count--; - if (count < 0) - return 0; - } - - switch (s[i]) - { - default: - ADVANCE_CHAR (s, len, i); - break; - - case '\\': - i++; - if (s[i]) - ADVANCE_CHAR (s, len, i); - break; - - case '\'': - i = skip_single_quoted (s, len, ++i); - break; - - case '"': - i = skip_double_quoted ((char *)s, len, ++i); - break; - } - } - - return (count == 0); -} - -/****************************************************************/ -/* */ -/* Functions to perform parameter expansion on a string */ -/* */ -/****************************************************************/ - -/* ${[#][!]name[[:][^[^]][,[,]]#[#]%[%]-=?+[word][:e1[:e2]]]} */ -static WORD_DESC * -parameter_brace_expand (string, indexp, quoted, pflags, quoted_dollar_atp, contains_dollar_at) - char *string; - int *indexp, quoted, *quoted_dollar_atp, *contains_dollar_at, pflags; -{ - int check_nullness, var_is_set, var_is_null, var_is_special; - int want_substring, want_indir, want_patsub, want_casemod; - char *name, *value, *temp, *temp1; - WORD_DESC *tdesc, *ret; - int t_index, sindex, c, tflag, modspec; - intmax_t number; - arrayind_t ind; - - temp = temp1 = value = (char *)NULL; - var_is_set = var_is_null = var_is_special = check_nullness = 0; - want_substring = want_indir = want_patsub = want_casemod = 0; - - sindex = *indexp; - t_index = ++sindex; - /* ${#var} doesn't have any of the other parameter expansions on it. */ - if (string[t_index] == '#' && legal_variable_starter (string[t_index+1])) /* {{ */ - name = string_extract (string, &t_index, "}", SX_VARNAME); - else -#if defined (CASEMOD_EXPANSIONS) - /* To enable case-toggling expansions using the `~' operator character - change the 1 to 0. */ -# if defined (CASEMOD_CAPCASE) - name = string_extract (string, &t_index, "#%^,~:-=?+/}", SX_VARNAME); -# else - name = string_extract (string, &t_index, "#%^,:-=?+/}", SX_VARNAME); -# endif /* CASEMOD_CAPCASE */ -#else - name = string_extract (string, &t_index, "#%:-=?+/}", SX_VARNAME); -#endif /* CASEMOD_EXPANSIONS */ - - ret = 0; - tflag = 0; - - ind = INTMAX_MIN; - - /* If the name really consists of a special variable, then make sure - that we have the entire name. We don't allow indirect references - to special variables except `#', `?', `@' and `*'. */ - if ((sindex == t_index && VALID_SPECIAL_LENGTH_PARAM (string[t_index])) || - (sindex == t_index - 1 && string[sindex] == '!' && VALID_INDIR_PARAM (string[t_index]))) - { - t_index++; - temp1 = string_extract (string, &t_index, "#%:-=?+/}", 0); - name = (char *)xrealloc (name, 3 + (strlen (temp1))); - *name = string[sindex]; - if (string[sindex] == '!') - { - /* indirect reference of $#, $?, $@, or $* */ - name[1] = string[sindex + 1]; - strcpy (name + 2, temp1); - } - else - strcpy (name + 1, temp1); - free (temp1); - } - sindex = t_index; - - /* Find out what character ended the variable name. Then - do the appropriate thing. */ - if (c = string[sindex]) - sindex++; - - /* If c is followed by one of the valid parameter expansion - characters, move past it as normal. If not, assume that - a substring specification is being given, and do not move - past it. */ - if (c == ':' && VALID_PARAM_EXPAND_CHAR (string[sindex])) - { - check_nullness++; - if (c = string[sindex]) - sindex++; - } - else if (c == ':' && string[sindex] != RBRACE) - want_substring = 1; - else if (c == '/' /* && string[sindex] != RBRACE */) /* XXX */ - want_patsub = 1; -#if defined (CASEMOD_EXPANSIONS) - else if (c == '^' || c == ',' || c == '~') - { - modspec = c; - want_casemod = 1; - } -#endif - - /* Catch the valid and invalid brace expressions that made it through the - tests above. */ - /* ${#-} is a valid expansion and means to take the length of $-. - Similarly for ${#?} and ${##}... */ - if (name[0] == '#' && name[1] == '\0' && check_nullness == 0 && - VALID_SPECIAL_LENGTH_PARAM (c) && string[sindex] == RBRACE) - { - name = (char *)xrealloc (name, 3); - name[1] = c; - name[2] = '\0'; - c = string[sindex++]; - } - - /* ...but ${#%}, ${#:}, ${#=}, ${#+}, and ${#/} are errors. */ - if (name[0] == '#' && name[1] == '\0' && check_nullness == 0 && - member (c, "%:=+/") && string[sindex] == RBRACE) - { - temp = (char *)NULL; - goto bad_substitution; - } - - /* Indirect expansion begins with a `!'. A valid indirect expansion is - either a variable name, one of the positional parameters or a special - variable that expands to one of the positional parameters. */ - want_indir = *name == '!' && - (legal_variable_starter ((unsigned char)name[1]) || DIGIT (name[1]) - || VALID_INDIR_PARAM (name[1])); - - /* Determine the value of this variable. */ - - /* Check for special variables, directly referenced. */ - if (SPECIAL_VAR (name, want_indir)) - var_is_special++; - - /* Check for special expansion things, like the length of a parameter */ - if (*name == '#' && name[1]) - { - /* If we are not pointing at the character just after the - closing brace, then we haven't gotten all of the name. - Since it begins with a special character, this is a bad - substitution. Also check NAME for validity before trying - to go on. */ - if (string[sindex - 1] != RBRACE || (valid_length_expression (name) == 0)) - { - temp = (char *)NULL; - goto bad_substitution; - } - - number = parameter_brace_expand_length (name); - if (number == INTMAX_MIN && unbound_vars_is_error) - { - last_command_exit_value = EXECUTION_FAILURE; - err_unboundvar (name+1); - free (name); - return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal); - } - free (name); - - *indexp = sindex; - if (number < 0) - return (&expand_wdesc_error); - else - { - ret = alloc_word_desc (); - ret->word = itos (number); - return ret; - } - } - - /* ${@} is identical to $@. */ - if (name[0] == '@' && name[1] == '\0') - { - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && quoted_dollar_atp) - *quoted_dollar_atp = 1; - - if (contains_dollar_at) - *contains_dollar_at = 1; - } - - /* Process ${!PREFIX*} expansion. */ - if (want_indir && string[sindex - 1] == RBRACE && - (string[sindex - 2] == '*' || string[sindex - 2] == '@') && - legal_variable_starter ((unsigned char) name[1])) - { - char **x; - WORD_LIST *xlist; - - temp1 = savestring (name + 1); - number = strlen (temp1); - temp1[number - 1] = '\0'; - x = all_variables_matching_prefix (temp1); - xlist = strvec_to_word_list (x, 0, 0); - if (string[sindex - 2] == '*') - temp = string_list_dollar_star (xlist); - else - { - temp = string_list_dollar_at (xlist, quoted); - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && quoted_dollar_atp) - *quoted_dollar_atp = 1; - if (contains_dollar_at) - *contains_dollar_at = 1; - } - free (x); - dispose_words (xlist); - free (temp1); - *indexp = sindex; - - free (name); - - ret = alloc_word_desc (); - ret->word = temp; - return ret; - } - -#if defined (ARRAY_VARS) - /* Process ${!ARRAY[@]} and ${!ARRAY[*]} expansion. */ /* [ */ - if (want_indir && string[sindex - 1] == RBRACE && - string[sindex - 2] == ']' && valid_array_reference (name+1)) - { - char *x, *x1; - - temp1 = savestring (name + 1); - x = array_variable_name (temp1, &x1, (int *)0); /* [ */ - FREE (x); - if (ALL_ELEMENT_SUB (x1[0]) && x1[1] == ']') - { - temp = array_keys (temp1, quoted); /* handles assoc vars too */ - if (x1[0] == '@') - { - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && quoted_dollar_atp) - *quoted_dollar_atp = 1; - if (contains_dollar_at) - *contains_dollar_at = 1; - } - - free (temp1); - *indexp = sindex; - - ret = alloc_word_desc (); - ret->word = temp; - return ret; - } - - free (temp1); - } -#endif /* ARRAY_VARS */ - - /* Make sure that NAME is valid before trying to go on. */ - if (valid_brace_expansion_word (want_indir ? name + 1 : name, - var_is_special) == 0) - { - temp = (char *)NULL; - goto bad_substitution; - } - - if (want_indir) - tdesc = parameter_brace_expand_indir (name + 1, var_is_special, quoted, quoted_dollar_atp, contains_dollar_at); - else - tdesc = parameter_brace_expand_word (name, var_is_special, quoted, PF_IGNUNBOUND|(pflags&PF_NOSPLIT2), &ind); - - if (tdesc) - { - temp = tdesc->word; - tflag = tdesc->flags; - dispose_word_desc (tdesc); - } - else - temp = (char *)0; - -#if defined (ARRAY_VARS) - if (valid_array_reference (name)) - chk_atstar (name, quoted, quoted_dollar_atp, contains_dollar_at); -#endif - - var_is_set = temp != (char *)0; - var_is_null = check_nullness && (var_is_set == 0 || *temp == 0); - - /* Get the rest of the stuff inside the braces. */ - if (c && c != RBRACE) - { - /* Extract the contents of the ${ ... } expansion - according to the Posix.2 rules. */ - value = extract_dollar_brace_string (string, &sindex, quoted, (c == '%' || c == '#' || c =='/' || c == '^' || c == ',' || c ==':') ? SX_POSIXEXP|SX_WORD : SX_WORD); - if (string[sindex] == RBRACE) - sindex++; - else - goto bad_substitution; - } - else - value = (char *)NULL; - - *indexp = sindex; - - /* All the cases where an expansion can possibly generate an unbound - variable error. */ - if (want_substring || want_patsub || want_casemod || c == '#' || c == '%' || c == RBRACE) - { - if (var_is_set == 0 && unbound_vars_is_error && ((name[0] != '@' && name[0] != '*') || name[1])) - { - last_command_exit_value = EXECUTION_FAILURE; - err_unboundvar (name); - FREE (value); - FREE (temp); - free (name); - return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal); - } - } - - /* If this is a substring spec, process it and add the result. */ - if (want_substring) - { - temp1 = parameter_brace_substring (name, temp, ind, value, quoted, (tflag & W_ARRAYIND) ? AV_USEIND : 0); - FREE (name); - FREE (value); - FREE (temp); - - if (temp1 == &expand_param_error) - return (&expand_wdesc_error); - else if (temp1 == &expand_param_fatal) - return (&expand_wdesc_fatal); - - ret = alloc_word_desc (); - ret->word = temp1; - if (temp1 && QUOTED_NULL (temp1) && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))) - ret->flags |= W_QUOTED|W_HASQUOTEDNULL; - return ret; - } - else if (want_patsub) - { - temp1 = parameter_brace_patsub (name, temp, ind, value, quoted, (tflag & W_ARRAYIND) ? AV_USEIND : 0); - FREE (name); - FREE (value); - FREE (temp); - - if (temp1 == &expand_param_error) - return (&expand_wdesc_error); - else if (temp1 == &expand_param_fatal) - return (&expand_wdesc_fatal); - - ret = alloc_word_desc (); - ret->word = temp1; - if (temp1 && QUOTED_NULL (temp1) && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))) - ret->flags |= W_QUOTED|W_HASQUOTEDNULL; - return ret; - } -#if defined (CASEMOD_EXPANSIONS) - else if (want_casemod) - { - temp1 = parameter_brace_casemod (name, temp, ind, modspec, value, quoted, (tflag & W_ARRAYIND) ? AV_USEIND : 0); - FREE (name); - FREE (value); - FREE (temp); - - if (temp1 == &expand_param_error) - return (&expand_wdesc_error); - else if (temp1 == &expand_param_fatal) - return (&expand_wdesc_fatal); - - ret = alloc_word_desc (); - ret->word = temp1; - if (temp1 && QUOTED_NULL (temp1) && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))) - ret->flags |= W_QUOTED|W_HASQUOTEDNULL; - return ret; - } -#endif - - /* Do the right thing based on which character ended the variable name. */ - switch (c) - { - default: - case '\0': - bad_substitution: - last_command_exit_value = EXECUTION_FAILURE; - report_error (_("%s: bad substitution"), string ? string : "??"); - FREE (value); - FREE (temp); - free (name); - return &expand_wdesc_error; - - case RBRACE: - break; - - case '#': /* ${param#[#]pattern} */ - case '%': /* ${param%[%]pattern} */ - if (value == 0 || *value == '\0' || temp == 0 || *temp == '\0') - { - FREE (value); - break; - } - temp1 = parameter_brace_remove_pattern (name, temp, ind, value, c, quoted, (tflag & W_ARRAYIND) ? AV_USEIND : 0); - free (temp); - free (value); - free (name); - - ret = alloc_word_desc (); - ret->word = temp1; - if (temp1 && QUOTED_NULL (temp1) && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))) - ret->flags |= W_QUOTED|W_HASQUOTEDNULL; - return ret; - - case '-': - case '=': - case '?': - case '+': - if (var_is_set && var_is_null == 0) - { - /* If the operator is `+', we don't want the value of the named - variable for anything, just the value of the right hand side. */ - if (c == '+') - { - /* XXX -- if we're double-quoted and the named variable is "$@", - we want to turn off any special handling of "$@" -- - we're not using it, so whatever is on the rhs applies. */ - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && quoted_dollar_atp) - *quoted_dollar_atp = 0; - if (contains_dollar_at) - *contains_dollar_at = 0; - - FREE (temp); - if (value) - { - /* From Posix discussion on austin-group list. Issue 221 - requires that backslashes escaping `}' inside - double-quoted ${...} be removed. */ - if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) - quoted |= Q_DOLBRACE; - ret = parameter_brace_expand_rhs (name, value, c, - quoted, - quoted_dollar_atp, - contains_dollar_at); - /* XXX - fix up later, esp. noting presence of - W_HASQUOTEDNULL in ret->flags */ - free (value); - } - else - temp = (char *)NULL; - } - else - { - FREE (value); - } - /* Otherwise do nothing; just use the value in TEMP. */ - } - else /* VAR not set or VAR is NULL. */ - { - FREE (temp); - temp = (char *)NULL; - if (c == '=' && var_is_special) - { - last_command_exit_value = EXECUTION_FAILURE; - report_error (_("$%s: cannot assign in this way"), name); - free (name); - free (value); - return &expand_wdesc_error; - } - else if (c == '?') - { - parameter_brace_expand_error (name, value); - return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal); - } - else if (c != '+') - { - /* XXX -- if we're double-quoted and the named variable is "$@", - we want to turn off any special handling of "$@" -- - we're not using it, so whatever is on the rhs applies. */ - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && quoted_dollar_atp) - *quoted_dollar_atp = 0; - if (contains_dollar_at) - *contains_dollar_at = 0; - - /* From Posix discussion on austin-group list. Issue 221 requires - that backslashes escaping `}' inside double-quoted ${...} be - removed. */ - if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) - quoted |= Q_DOLBRACE; - ret = parameter_brace_expand_rhs (name, value, c, quoted, - quoted_dollar_atp, - contains_dollar_at); - /* XXX - fix up later, esp. noting presence of - W_HASQUOTEDNULL in tdesc->flags */ - } - free (value); - } - - break; - } - free (name); - - if (ret == 0) - { - ret = alloc_word_desc (); - ret->flags = tflag; - ret->word = temp; - } - return (ret); -} - -/* Expand a single ${xxx} expansion. The braces are optional. When - the braces are used, parameter_brace_expand() does the work, - possibly calling param_expand recursively. */ -static WORD_DESC * -param_expand (string, sindex, quoted, expanded_something, - contains_dollar_at, quoted_dollar_at_p, had_quoted_null_p, - pflags) - char *string; - int *sindex, quoted, *expanded_something, *contains_dollar_at; - int *quoted_dollar_at_p, *had_quoted_null_p, pflags; -{ - char *temp, *temp1, uerror[3]; - int zindex, t_index, expok; - unsigned char c; - intmax_t number; - SHELL_VAR *var; - WORD_LIST *list; - WORD_DESC *tdesc, *ret; - int tflag; - - zindex = *sindex; - c = string[++zindex]; - - temp = (char *)NULL; - ret = tdesc = (WORD_DESC *)NULL; - tflag = 0; - - /* Do simple cases first. Switch on what follows '$'. */ - switch (c) - { - /* $0 .. $9? */ - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - temp1 = dollar_vars[TODIGIT (c)]; - if (unbound_vars_is_error && temp1 == (char *)NULL) - { - uerror[0] = '$'; - uerror[1] = c; - uerror[2] = '\0'; - last_command_exit_value = EXECUTION_FAILURE; - err_unboundvar (uerror); - return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal); - } - if (temp1) - temp = (*temp1 && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))) - ? quote_string (temp1) - : quote_escapes (temp1); - else - temp = (char *)NULL; - - break; - - /* $$ -- pid of the invoking shell. */ - case '$': - temp = itos (dollar_dollar_pid); - break; - - /* $# -- number of positional parameters. */ - case '#': - temp = itos (number_of_args ()); - break; - - /* $? -- return value of the last synchronous command. */ - case '?': - temp = itos (last_command_exit_value); - break; - - /* $- -- flags supplied to the shell on invocation or by `set'. */ - case '-': - temp = which_set_flags (); - break; - - /* $! -- Pid of the last asynchronous command. */ - case '!': - /* If no asynchronous pids have been created, expand to nothing. - If `set -u' has been executed, and no async processes have - been created, this is an expansion error. */ - if (last_asynchronous_pid == NO_PID) - { - if (expanded_something) - *expanded_something = 0; - temp = (char *)NULL; - if (unbound_vars_is_error) - { - uerror[0] = '$'; - uerror[1] = c; - uerror[2] = '\0'; - last_command_exit_value = EXECUTION_FAILURE; - err_unboundvar (uerror); - return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal); - } - } - else - temp = itos (last_asynchronous_pid); - break; - - /* The only difference between this and $@ is when the arg is quoted. */ - case '*': /* `$*' */ - list = list_rest_of_args (); - -#if 0 - /* According to austin-group posix proposal by Geoff Clare in - <20090505091501.GA10097@squonk.masqnet> of 5 May 2009: - - "The shell shall write a message to standard error and - immediately exit when it tries to expand an unset parameter - other than the '@' and '*' special parameters." - */ - - if (list == 0 && unbound_vars_is_error && (pflags & PF_IGNUNBOUND) == 0) - { - uerror[0] = '$'; - uerror[1] = '*'; - uerror[2] = '\0'; - last_command_exit_value = EXECUTION_FAILURE; - err_unboundvar (uerror); - return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal); - } -#endif - - /* If there are no command-line arguments, this should just - disappear if there are other characters in the expansion, - even if it's quoted. */ - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && list == 0) - temp = (char *)NULL; - else if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES|Q_PATQUOTE)) - { - /* If we have "$*" we want to make a string of the positional - parameters, separated by the first character of $IFS, and - quote the whole string, including the separators. If IFS - is unset, the parameters are separated by ' '; if $IFS is - null, the parameters are concatenated. */ - temp = (quoted & (Q_DOUBLE_QUOTES|Q_PATQUOTE)) ? string_list_dollar_star (list) : string_list (list); - if (temp) - { - temp1 = quote_string (temp); - if (*temp == 0) - tflag |= W_HASQUOTEDNULL; - free (temp); - temp = temp1; - } - } - else - { - /* We check whether or not we're eventually going to split $* here, - for example when IFS is empty and we are processing the rhs of - an assignment statement. In that case, we don't separate the - arguments at all. Otherwise, if the $* is not quoted it is - identical to $@ */ -#if 1 -# if defined (HANDLE_MULTIBYTE) - if (expand_no_split_dollar_star && ifs_firstc[0] == 0) -# else - if (expand_no_split_dollar_star && ifs_firstc == 0) -# endif - temp = string_list_dollar_star (list); - else - temp = string_list_dollar_at (list, quoted); -#else - temp = string_list_dollar_at (list, quoted); -#endif - if (expand_no_split_dollar_star == 0 && contains_dollar_at) - *contains_dollar_at = 1; - } - - dispose_words (list); - break; - - /* When we have "$@" what we want is "$1" "$2" "$3" ... This - means that we have to turn quoting off after we split into - the individually quoted arguments so that the final split - on the first character of $IFS is still done. */ - case '@': /* `$@' */ - list = list_rest_of_args (); - -#if 0 - /* According to austin-group posix proposal by Geoff Clare in - <20090505091501.GA10097@squonk.masqnet> of 5 May 2009: - - "The shell shall write a message to standard error and - immediately exit when it tries to expand an unset parameter - other than the '@' and '*' special parameters." - */ - - if (list == 0 && unbound_vars_is_error && (pflags & PF_IGNUNBOUND) == 0) - { - uerror[0] = '$'; - uerror[1] = '@'; - uerror[2] = '\0'; - last_command_exit_value = EXECUTION_FAILURE; - err_unboundvar (uerror); - return (interactive_shell ? &expand_wdesc_error : &expand_wdesc_fatal); - } -#endif - - /* We want to flag the fact that we saw this. We can't turn - off quoting entirely, because other characters in the - string might need it (consider "\"$@\""), but we need some - way to signal that the final split on the first character - of $IFS should be done, even though QUOTED is 1. */ - /* XXX - should this test include Q_PATQUOTE? */ - if (quoted_dollar_at_p && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))) - *quoted_dollar_at_p = 1; - if (contains_dollar_at) - *contains_dollar_at = 1; - - /* We want to separate the positional parameters with the first - character of $IFS in case $IFS is something other than a space. - We also want to make sure that splitting is done no matter what -- - according to POSIX.2, this expands to a list of the positional - parameters no matter what IFS is set to. */ -#if 0 - temp = string_list_dollar_at (list, quoted); -#else - temp = string_list_dollar_at (list, (pflags & PF_ASSIGNRHS) ? (quoted|Q_DOUBLE_QUOTES) : quoted); -#endif - - dispose_words (list); - break; - - case LBRACE: - tdesc = parameter_brace_expand (string, &zindex, quoted, pflags, - quoted_dollar_at_p, - contains_dollar_at); - - if (tdesc == &expand_wdesc_error || tdesc == &expand_wdesc_fatal) - return (tdesc); - temp = tdesc ? tdesc->word : (char *)0; - - /* XXX */ - /* Quoted nulls should be removed if there is anything else - in the string. */ - /* Note that we saw the quoted null so we can add one back at - the end of this function if there are no other characters - in the string, discard TEMP, and go on. The exception to - this is when we have "${@}" and $1 is '', since $@ needs - special handling. */ - if (tdesc && tdesc->word && (tdesc->flags & W_HASQUOTEDNULL) && QUOTED_NULL (temp)) - { - if (had_quoted_null_p) - *had_quoted_null_p = 1; - if (*quoted_dollar_at_p == 0) - { - free (temp); - tdesc->word = temp = (char *)NULL; - } - - } - - ret = tdesc; - goto return0; - - /* Do command or arithmetic substitution. */ - case LPAREN: - /* We have to extract the contents of this paren substitution. */ - t_index = zindex + 1; - temp = extract_command_subst (string, &t_index, 0); - zindex = t_index; - - /* For Posix.2-style `$(( ))' arithmetic substitution, - extract the expression and pass it to the evaluator. */ - if (temp && *temp == LPAREN) - { - char *temp2; - temp1 = temp + 1; - temp2 = savestring (temp1); - t_index = strlen (temp2) - 1; - - if (temp2[t_index] != RPAREN) - { - free (temp2); - goto comsub; - } - - /* Cut off ending `)' */ - temp2[t_index] = '\0'; - - if (chk_arithsub (temp2, t_index) == 0) - { - free (temp2); -#if 0 - internal_warning (_("future versions of the shell will force evaluation as an arithmetic substitution")); -#endif - goto comsub; - } - - /* Expand variables found inside the expression. */ - temp1 = expand_arith_string (temp2, Q_DOUBLE_QUOTES); - free (temp2); - -arithsub: - /* No error messages. */ - this_command_name = (char *)NULL; - number = evalexp (temp1, &expok); - free (temp); - free (temp1); - if (expok == 0) - { - if (interactive_shell == 0 && posixly_correct) - { - last_command_exit_value = EXECUTION_FAILURE; - return (&expand_wdesc_fatal); - } - else - return (&expand_wdesc_error); - } - temp = itos (number); - break; - } - -comsub: - if (pflags & PF_NOCOMSUB) - /* we need zindex+1 because string[zindex] == RPAREN */ - temp1 = substring (string, *sindex, zindex+1); - else - { - tdesc = command_substitute (temp, quoted); - temp1 = tdesc ? tdesc->word : (char *)NULL; - if (tdesc) - dispose_word_desc (tdesc); - } - FREE (temp); - temp = temp1; - break; - - /* Do POSIX.2d9-style arithmetic substitution. This will probably go - away in a future bash release. */ - case '[': - /* Extract the contents of this arithmetic substitution. */ - t_index = zindex + 1; - temp = extract_arithmetic_subst (string, &t_index); - zindex = t_index; - if (temp == 0) - { - temp = savestring (string); - if (expanded_something) - *expanded_something = 0; - goto return0; - } - - /* Do initial variable expansion. */ - temp1 = expand_arith_string (temp, Q_DOUBLE_QUOTES); - - goto arithsub; - - default: - /* Find the variable in VARIABLE_LIST. */ - temp = (char *)NULL; - - for (t_index = zindex; (c = string[zindex]) && legal_variable_char (c); zindex++) - ; - temp1 = (zindex > t_index) ? substring (string, t_index, zindex) : (char *)NULL; - - /* If this isn't a variable name, then just output the `$'. */ - if (temp1 == 0 || *temp1 == '\0') - { - FREE (temp1); - temp = (char *)xmalloc (2); - temp[0] = '$'; - temp[1] = '\0'; - if (expanded_something) - *expanded_something = 0; - goto return0; - } - - /* If the variable exists, return its value cell. */ - var = find_variable (temp1); - - if (var && invisible_p (var) == 0 && var_isset (var)) - { -#if defined (ARRAY_VARS) - if (assoc_p (var) || array_p (var)) - { - temp = array_p (var) ? array_reference (array_cell (var), 0) - : assoc_reference (assoc_cell (var), "0"); - if (temp) - temp = (*temp && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))) - ? quote_string (temp) - : quote_escapes (temp); - else if (unbound_vars_is_error) - goto unbound_variable; - } - else -#endif - { - temp = value_cell (var); - - temp = (*temp && (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES))) - ? quote_string (temp) - : quote_escapes (temp); - } - - free (temp1); - - goto return0; - } - - temp = (char *)NULL; - -unbound_variable: - if (unbound_vars_is_error) - { - last_command_exit_value = EXECUTION_FAILURE; - err_unboundvar (temp1); - } - else - { - free (temp1); - goto return0; - } - - free (temp1); - last_command_exit_value = EXECUTION_FAILURE; - return ((unbound_vars_is_error && interactive_shell == 0) - ? &expand_wdesc_fatal - : &expand_wdesc_error); - } - - if (string[zindex]) - zindex++; - -return0: - *sindex = zindex; - - if (ret == 0) - { - ret = alloc_word_desc (); - ret->flags = tflag; /* XXX */ - ret->word = temp; - } - return ret; -} - -/* Make a word list which is the result of parameter and variable - expansion, command substitution, arithmetic substitution, and - quote removal of WORD. Return a pointer to a WORD_LIST which is - the result of the expansion. If WORD contains a null word, the - word list returned is also null. - - QUOTED contains flag values defined in shell.h. - - ISEXP is used to tell expand_word_internal that the word should be - treated as the result of an expansion. This has implications for - how IFS characters in the word are treated. - - CONTAINS_DOLLAR_AT and EXPANDED_SOMETHING are return values; when non-null - they point to an integer value which receives information about expansion. - CONTAINS_DOLLAR_AT gets non-zero if WORD contained "$@", else zero. - EXPANDED_SOMETHING get non-zero if WORD contained any parameter expansions, - else zero. - - This only does word splitting in the case of $@ expansion. In that - case, we split on ' '. */ - -/* Values for the local variable quoted_state. */ -#define UNQUOTED 0 -#define PARTIALLY_QUOTED 1 -#define WHOLLY_QUOTED 2 - -static WORD_LIST * -expand_word_internal (word, quoted, isexp, contains_dollar_at, expanded_something) - WORD_DESC *word; - int quoted, isexp; - int *contains_dollar_at; - int *expanded_something; -{ - WORD_LIST *list; - WORD_DESC *tword; - - /* The intermediate string that we build while expanding. */ - char *istring; - - /* The current size of the above object. */ - int istring_size; - - /* Index into ISTRING. */ - int istring_index; - - /* Temporary string storage. */ - char *temp, *temp1; - - /* The text of WORD. */ - register char *string; - - /* The size of STRING. */ - size_t string_size; - - /* The index into STRING. */ - int sindex; - - /* This gets 1 if we see a $@ while quoted. */ - int quoted_dollar_at; - - /* One of UNQUOTED, PARTIALLY_QUOTED, or WHOLLY_QUOTED, depending on - whether WORD contains no quoting characters, a partially quoted - string (e.g., "xx"ab), or is fully quoted (e.g., "xxab"). */ - int quoted_state; - - /* State flags */ - int had_quoted_null; - int has_dollar_at; - int tflag; - int pflags; /* flags passed to param_expand */ - - int assignoff; /* If assignment, offset of `=' */ - - register unsigned char c; /* Current character. */ - int t_index; /* For calls to string_extract_xxx. */ - - char twochars[2]; - - DECLARE_MBSTATE; - - istring = (char *)xmalloc (istring_size = DEFAULT_INITIAL_ARRAY_SIZE); - istring[istring_index = 0] = '\0'; - quoted_dollar_at = had_quoted_null = has_dollar_at = 0; - quoted_state = UNQUOTED; - - string = word->word; - if (string == 0) - goto finished_with_string; - /* Don't need the string length for the SADD... and COPY_ macros unless - multibyte characters are possible. */ - string_size = (MB_CUR_MAX > 1) ? strlen (string) : 1; - - if (contains_dollar_at) - *contains_dollar_at = 0; - - assignoff = -1; - - /* Begin the expansion. */ - - for (sindex = 0; ;) - { - c = string[sindex]; - - /* Case on toplevel character. */ - switch (c) - { - case '\0': - goto finished_with_string; - - case CTLESC: - sindex++; -#if HANDLE_MULTIBYTE - if (MB_CUR_MAX > 1 && string[sindex]) - { - SADD_MBQCHAR_BODY(temp, string, sindex, string_size); - } - else -#endif - { - temp = (char *)xmalloc (3); - temp[0] = CTLESC; - temp[1] = c = string[sindex]; - temp[2] = '\0'; - } - -dollar_add_string: - if (string[sindex]) - sindex++; - -add_string: - if (temp) - { - istring = sub_append_string (temp, istring, &istring_index, &istring_size); - temp = (char *)0; - } - - break; - -#if defined (PROCESS_SUBSTITUTION) - /* Process substitution. */ - case '<': - case '>': - { - if (string[++sindex] != LPAREN || (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) || (word->flags & (W_DQUOTE|W_NOPROCSUB)) || posixly_correct) - { - sindex--; /* add_character: label increments sindex */ - goto add_character; - } - else - t_index = sindex + 1; /* skip past both '<' and LPAREN */ - - temp1 = extract_process_subst (string, (c == '<') ? "<(" : ">(", &t_index); /*))*/ - sindex = t_index; - - /* If the process substitution specification is `<()', we want to - open the pipe for writing in the child and produce output; if - it is `>()', we want to open the pipe for reading in the child - and consume input. */ - temp = temp1 ? process_substitute (temp1, (c == '>')) : (char *)0; - - FREE (temp1); - - goto dollar_add_string; - } -#endif /* PROCESS_SUBSTITUTION */ - - case '=': - /* Posix.2 section 3.6.1 says that tildes following `=' in words - which are not assignment statements are not expanded. If the - shell isn't in posix mode, though, we perform tilde expansion - on `likely candidate' unquoted assignment statements (flags - include W_ASSIGNMENT but not W_QUOTED). A likely candidate - contains an unquoted :~ or =~. Something to think about: we - now have a flag that says to perform tilde expansion on arguments - to `assignment builtins' like declare and export that look like - assignment statements. We now do tilde expansion on such words - even in POSIX mode. */ - if (word->flags & (W_ASSIGNRHS|W_NOTILDE)) - { - if (isexp == 0 && (word->flags & (W_NOSPLIT|W_NOSPLIT2)) == 0 && isifs (c)) - goto add_ifs_character; - else - goto add_character; - } - /* If we're not in posix mode or forcing assignment-statement tilde - expansion, note where the `=' appears in the word and prepare to - do tilde expansion following the first `='. */ - if ((word->flags & W_ASSIGNMENT) && - (posixly_correct == 0 || (word->flags & W_TILDEEXP)) && - assignoff == -1 && sindex > 0) - assignoff = sindex; - if (sindex == assignoff && string[sindex+1] == '~') /* XXX */ - word->flags |= W_ITILDE; -#if 0 - else if ((word->flags & W_ASSIGNMENT) && - (posixly_correct == 0 || (word->flags & W_TILDEEXP)) && - string[sindex+1] == '~') - word->flags |= W_ITILDE; -#endif - if (isexp == 0 && (word->flags & (W_NOSPLIT|W_NOSPLIT2)) == 0 && isifs (c)) - goto add_ifs_character; - else - goto add_character; - - case ':': - if (word->flags & W_NOTILDE) - { - if (isexp == 0 && (word->flags & (W_NOSPLIT|W_NOSPLIT2)) == 0 && isifs (c)) - goto add_ifs_character; - else - goto add_character; - } - - if ((word->flags & (W_ASSIGNMENT|W_ASSIGNRHS|W_TILDEEXP)) && - string[sindex+1] == '~') - word->flags |= W_ITILDE; - - if (isexp == 0 && (word->flags & (W_NOSPLIT|W_NOSPLIT2)) == 0 && isifs (c)) - goto add_ifs_character; - else - goto add_character; - - case '~': - /* If the word isn't supposed to be tilde expanded, or we're not - at the start of a word or after an unquoted : or = in an - assignment statement, we don't do tilde expansion. */ - if ((word->flags & (W_NOTILDE|W_DQUOTE)) || - (sindex > 0 && ((word->flags & W_ITILDE) == 0)) || - (quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT))) - { - word->flags &= ~W_ITILDE; - if (isexp == 0 && (word->flags & (W_NOSPLIT|W_NOSPLIT2)) == 0 && isifs (c) && (quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT)) == 0) - goto add_ifs_character; - else - goto add_character; - } - - if (word->flags & W_ASSIGNRHS) - tflag = 2; - else if (word->flags & (W_ASSIGNMENT|W_TILDEEXP)) - tflag = 1; - else - tflag = 0; - - temp = bash_tilde_find_word (string + sindex, tflag, &t_index); - - word->flags &= ~W_ITILDE; - - if (temp && *temp && t_index > 0) - { - temp1 = bash_tilde_expand (temp, tflag); - if (temp1 && *temp1 == '~' && STREQ (temp, temp1)) - { - FREE (temp); - FREE (temp1); - goto add_character; /* tilde expansion failed */ - } - free (temp); - temp = temp1; - sindex += t_index; - goto add_quoted_string; /* XXX was add_string */ - } - else - { - FREE (temp); - goto add_character; - } - - case '$': - if (expanded_something) - *expanded_something = 1; - - has_dollar_at = 0; - pflags = (word->flags & W_NOCOMSUB) ? PF_NOCOMSUB : 0; - if (word->flags & W_NOSPLIT2) - pflags |= PF_NOSPLIT2; - if (word->flags & W_ASSIGNRHS) - pflags |= PF_ASSIGNRHS; - tword = param_expand (string, &sindex, quoted, expanded_something, - &has_dollar_at, "ed_dollar_at, - &had_quoted_null, pflags); - - if (tword == &expand_wdesc_error || tword == &expand_wdesc_fatal) - { - free (string); - free (istring); - return ((tword == &expand_wdesc_error) ? &expand_word_error - : &expand_word_fatal); - } - if (contains_dollar_at && has_dollar_at) - *contains_dollar_at = 1; - - if (tword && (tword->flags & W_HASQUOTEDNULL)) - had_quoted_null = 1; - - temp = tword ? tword->word : (char *)NULL; - dispose_word_desc (tword); - - goto add_string; - break; - - case '`': /* Backquoted command substitution. */ - { - t_index = sindex++; - - temp = string_extract (string, &sindex, "`", SX_REQMATCH); - /* The test of sindex against t_index is to allow bare instances of - ` to pass through, for backwards compatibility. */ - if (temp == &extract_string_error || temp == &extract_string_fatal) - { - if (sindex - 1 == t_index) - { - sindex = t_index; - goto add_character; - } - last_command_exit_value = EXECUTION_FAILURE; - report_error (_("bad substitution: no closing \"`\" in %s") , string+t_index); - free (string); - free (istring); - return ((temp == &extract_string_error) ? &expand_word_error - : &expand_word_fatal); - } - - if (expanded_something) - *expanded_something = 1; - - if (word->flags & W_NOCOMSUB) - /* sindex + 1 because string[sindex] == '`' */ - temp1 = substring (string, t_index, sindex + 1); - else - { - de_backslash (temp); - tword = command_substitute (temp, quoted); - temp1 = tword ? tword->word : (char *)NULL; - if (tword) - dispose_word_desc (tword); - } - FREE (temp); - temp = temp1; - goto dollar_add_string; - } - - case '\\': - if (string[sindex + 1] == '\n') - { - sindex += 2; - continue; - } - - c = string[++sindex]; - - if (quoted & Q_HERE_DOCUMENT) - tflag = CBSHDOC; - else if (quoted & Q_DOUBLE_QUOTES) - tflag = CBSDQUOTE; - else - tflag = 0; - - /* From Posix discussion on austin-group list: Backslash escaping - a } in ${...} is removed. Issue 0000221 */ - if ((quoted & Q_DOLBRACE) && c == RBRACE) - { - SCOPY_CHAR_I (twochars, CTLESC, c, string, sindex, string_size); - } - else if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) && ((sh_syntaxtab[c] & tflag) == 0)) - { - SCOPY_CHAR_I (twochars, '\\', c, string, sindex, string_size); - } - else if (c == 0) - { - c = CTLNUL; - sindex--; /* add_character: label increments sindex */ - goto add_character; - } - else - { - SCOPY_CHAR_I (twochars, CTLESC, c, string, sindex, string_size); - } - - sindex++; -add_twochars: - /* BEFORE jumping here, we need to increment sindex if appropriate */ - RESIZE_MALLOCED_BUFFER (istring, istring_index, 2, istring_size, - DEFAULT_ARRAY_SIZE); - istring[istring_index++] = twochars[0]; - istring[istring_index++] = twochars[1]; - istring[istring_index] = '\0'; - - break; - - case '"': -#if 0 - if ((quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT)) || (word->flags & W_DQUOTE)) -#else - if ((quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT))) -#endif - goto add_character; - - t_index = ++sindex; - temp = string_extract_double_quoted (string, &sindex, 0); - - /* If the quotes surrounded the entire string, then the - whole word was quoted. */ - quoted_state = (t_index == 1 && string[sindex] == '\0') - ? WHOLLY_QUOTED - : PARTIALLY_QUOTED; - - if (temp && *temp) - { - tword = alloc_word_desc (); - tword->word = temp; - - temp = (char *)NULL; - - has_dollar_at = 0; - /* Need to get W_HASQUOTEDNULL flag through this function. */ - list = expand_word_internal (tword, Q_DOUBLE_QUOTES, 0, &has_dollar_at, (int *)NULL); - - if (list == &expand_word_error || list == &expand_word_fatal) - { - free (istring); - free (string); - /* expand_word_internal has already freed temp_word->word - for us because of the way it prints error messages. */ - tword->word = (char *)NULL; - dispose_word (tword); - return list; - } - - dispose_word (tword); - - /* "$@" (a double-quoted dollar-at) expands into nothing, - not even a NULL word, when there are no positional - parameters. */ - if (list == 0 && has_dollar_at) - { - quoted_dollar_at++; - break; - } - - /* If we get "$@", we know we have expanded something, so we - need to remember it for the final split on $IFS. This is - a special case; it's the only case where a quoted string - can expand into more than one word. It's going to come back - from the above call to expand_word_internal as a list with - a single word, in which all characters are quoted and - separated by blanks. What we want to do is to turn it back - into a list for the next piece of code. */ - if (list) - dequote_list (list); - - if (list && list->word && (list->word->flags & W_HASQUOTEDNULL)) - had_quoted_null = 1; - - if (has_dollar_at) - { - quoted_dollar_at++; - if (contains_dollar_at) - *contains_dollar_at = 1; - if (expanded_something) - *expanded_something = 1; - } - } - else - { - /* What we have is "". This is a minor optimization. */ - FREE (temp); - list = (WORD_LIST *)NULL; - } - - /* The code above *might* return a list (consider the case of "$@", - where it returns "$1", "$2", etc.). We can't throw away the - rest of the list, and we have to make sure each word gets added - as quoted. We test on tresult->next: if it is non-NULL, we - quote the whole list, save it to a string with string_list, and - add that string. We don't need to quote the results of this - (and it would be wrong, since that would quote the separators - as well), so we go directly to add_string. */ - if (list) - { - if (list->next) - { -#if 0 - if (quoted_dollar_at && (word->flags & W_NOSPLIT2)) - temp = string_list_internal (quote_list (list), " "); - else -#endif - /* Testing quoted_dollar_at makes sure that "$@" is - split correctly when $IFS does not contain a space. */ - temp = quoted_dollar_at - ? string_list_dollar_at (list, Q_DOUBLE_QUOTES) - : string_list (quote_list (list)); - dispose_words (list); - goto add_string; - } - else - { - temp = savestring (list->word->word); - tflag = list->word->flags; - dispose_words (list); - - /* If the string is not a quoted null string, we want - to remove any embedded unquoted CTLNUL characters. - We do not want to turn quoted null strings back into - the empty string, though. We do this because we - want to remove any quoted nulls from expansions that - contain other characters. For example, if we have - x"$*"y or "x$*y" and there are no positional parameters, - the $* should expand into nothing. */ - /* We use the W_HASQUOTEDNULL flag to differentiate the - cases: a quoted null character as above and when - CTLNUL is contained in the (non-null) expansion - of some variable. We use the had_quoted_null flag to - pass the value through this function to its caller. */ - if ((tflag & W_HASQUOTEDNULL) && QUOTED_NULL (temp) == 0) - remove_quoted_nulls (temp); /* XXX */ - } - } - else - temp = (char *)NULL; - - /* We do not want to add quoted nulls to strings that are only - partially quoted; we can throw them away. The execption to - this is when we are going to be performing word splitting, - since we have to preserve a null argument if the next character - will cause word splitting. */ - if (temp == 0 && quoted_state == PARTIALLY_QUOTED && (word->flags & (W_NOSPLIT|W_NOSPLIT2))) - continue; - - add_quoted_string: - - if (temp) - { - temp1 = temp; - temp = quote_string (temp); - free (temp1); - goto add_string; - } - else - { - /* Add NULL arg. */ - c = CTLNUL; - sindex--; /* add_character: label increments sindex */ - goto add_character; - } - - /* break; */ - - case '\'': -#if 0 - if ((quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT)) || (word->flags & W_DQUOTE)) -#else - if ((quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT))) -#endif - goto add_character; - - t_index = ++sindex; - temp = string_extract_single_quoted (string, &sindex); - - /* If the entire STRING was surrounded by single quotes, - then the string is wholly quoted. */ - quoted_state = (t_index == 1 && string[sindex] == '\0') - ? WHOLLY_QUOTED - : PARTIALLY_QUOTED; - - /* If all we had was '', it is a null expansion. */ - if (*temp == '\0') - { - free (temp); - temp = (char *)NULL; - } - else - remove_quoted_escapes (temp); /* ??? */ - - /* We do not want to add quoted nulls to strings that are only - partially quoted; such nulls are discarded. */ - if (temp == 0 && (quoted_state == PARTIALLY_QUOTED)) - continue; - - /* If we have a quoted null expansion, add a quoted NULL to istring. */ - if (temp == 0) - { - c = CTLNUL; - sindex--; /* add_character: label increments sindex */ - goto add_character; - } - else - goto add_quoted_string; - - /* break; */ - - default: - /* This is the fix for " $@ " */ - add_ifs_character: - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) || (isexp == 0 && isifs (c))) - { - if (string[sindex]) /* from old goto dollar_add_string */ - sindex++; - if (c == 0) - { - c = CTLNUL; - goto add_character; - } - else - { -#if HANDLE_MULTIBYTE - if (MB_CUR_MAX > 1) - sindex--; - - if (MB_CUR_MAX > 1) - { - SADD_MBQCHAR_BODY(temp, string, sindex, string_size); - } - else -#endif - { - twochars[0] = CTLESC; - twochars[1] = c; - goto add_twochars; - } - } - } - - SADD_MBCHAR (temp, string, sindex, string_size); - - add_character: - RESIZE_MALLOCED_BUFFER (istring, istring_index, 1, istring_size, - DEFAULT_ARRAY_SIZE); - istring[istring_index++] = c; - istring[istring_index] = '\0'; - - /* Next character. */ - sindex++; - } - } - -finished_with_string: - /* OK, we're ready to return. If we have a quoted string, and - quoted_dollar_at is not set, we do no splitting at all; otherwise - we split on ' '. The routines that call this will handle what to - do if nothing has been expanded. */ - - /* Partially and wholly quoted strings which expand to the empty - string are retained as an empty arguments. Unquoted strings - which expand to the empty string are discarded. The single - exception is the case of expanding "$@" when there are no - positional parameters. In that case, we discard the expansion. */ - - /* Because of how the code that handles "" and '' in partially - quoted strings works, we need to make ISTRING into a QUOTED_NULL - if we saw quoting characters, but the expansion was empty. - "" and '' are tossed away before we get to this point when - processing partially quoted strings. This makes "" and $xxx"" - equivalent when xxx is unset. We also look to see whether we - saw a quoted null from a ${} expansion and add one back if we - need to. */ - - /* If we expand to nothing and there were no single or double quotes - in the word, we throw it away. Otherwise, we return a NULL word. - The single exception is for $@ surrounded by double quotes when - there are no positional parameters. In that case, we also throw - the word away. */ - - if (*istring == '\0') - { - if (quoted_dollar_at == 0 && (had_quoted_null || quoted_state == PARTIALLY_QUOTED)) - { - istring[0] = CTLNUL; - istring[1] = '\0'; - tword = make_bare_word (istring); - tword->flags |= W_HASQUOTEDNULL; /* XXX */ - list = make_word_list (tword, (WORD_LIST *)NULL); - if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) - tword->flags |= W_QUOTED; - } - /* According to sh, ksh, and Posix.2, if a word expands into nothing - and a double-quoted "$@" appears anywhere in it, then the entire - word is removed. */ - else if (quoted_state == UNQUOTED || quoted_dollar_at) - list = (WORD_LIST *)NULL; -#if 0 - else - { - tword = make_bare_word (istring); - if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) - tword->flags |= W_QUOTED; - list = make_word_list (tword, (WORD_LIST *)NULL); - } -#else - else - list = (WORD_LIST *)NULL; -#endif - } - else if (word->flags & W_NOSPLIT) - { - tword = make_bare_word (istring); - if (word->flags & W_ASSIGNMENT) - tword->flags |= W_ASSIGNMENT; /* XXX */ - if (word->flags & W_COMPASSIGN) - tword->flags |= W_COMPASSIGN; /* XXX */ - if (word->flags & W_NOGLOB) - tword->flags |= W_NOGLOB; /* XXX */ - if (word->flags & W_NOEXPAND) - tword->flags |= W_NOEXPAND; /* XXX */ - if (quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) - tword->flags |= W_QUOTED; - if (had_quoted_null) - tword->flags |= W_HASQUOTEDNULL; - list = make_word_list (tword, (WORD_LIST *)NULL); - } - else - { - char *ifs_chars; - - ifs_chars = (quoted_dollar_at || has_dollar_at) ? ifs_value : (char *)NULL; - - /* If we have $@, we need to split the results no matter what. If - IFS is unset or NULL, string_list_dollar_at has separated the - positional parameters with a space, so we split on space (we have - set ifs_chars to " \t\n" above if ifs is unset). If IFS is set, - string_list_dollar_at has separated the positional parameters - with the first character of $IFS, so we split on $IFS. */ - if (has_dollar_at && ifs_chars) - list = list_string (istring, *ifs_chars ? ifs_chars : " ", 1); - else - { - tword = make_bare_word (istring); - if ((quoted & (Q_DOUBLE_QUOTES|Q_HERE_DOCUMENT)) || (quoted_state == WHOLLY_QUOTED)) - tword->flags |= W_QUOTED; - if (word->flags & W_ASSIGNMENT) - tword->flags |= W_ASSIGNMENT; - if (word->flags & W_COMPASSIGN) - tword->flags |= W_COMPASSIGN; - if (word->flags & W_NOGLOB) - tword->flags |= W_NOGLOB; - if (word->flags & W_NOEXPAND) - tword->flags |= W_NOEXPAND; - if (had_quoted_null) - tword->flags |= W_HASQUOTEDNULL; /* XXX */ - list = make_word_list (tword, (WORD_LIST *)NULL); - } - } - - free (istring); - return (list); -} - -/* **************************************************************** */ -/* */ -/* Functions for Quote Removal */ -/* */ -/* **************************************************************** */ - -/* Perform quote removal on STRING. If QUOTED > 0, assume we are obeying the - backslash quoting rules for within double quotes or a here document. */ -char * -string_quote_removal (string, quoted) - char *string; - int quoted; -{ - size_t slen; - char *r, *result_string, *temp, *send; - int sindex, tindex, dquote; - unsigned char c; - DECLARE_MBSTATE; - - /* The result can be no longer than the original string. */ - slen = strlen (string); - send = string + slen; - - r = result_string = (char *)xmalloc (slen + 1); - - for (dquote = sindex = 0; c = string[sindex];) - { - switch (c) - { - case '\\': - c = string[++sindex]; - if (c == 0) - { - *r++ = '\\'; - break; - } - if (((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) || dquote) && (sh_syntaxtab[c] & CBSDQUOTE) == 0) - *r++ = '\\'; - /* FALLTHROUGH */ - - default: - SCOPY_CHAR_M (r, string, send, sindex); - break; - - case '\'': - if ((quoted & (Q_HERE_DOCUMENT|Q_DOUBLE_QUOTES)) || dquote) - { - *r++ = c; - sindex++; - break; - } - tindex = sindex + 1; - temp = string_extract_single_quoted (string, &tindex); - if (temp) - { - strcpy (r, temp); - r += strlen (r); - free (temp); - } - sindex = tindex; - break; - - case '"': - dquote = 1 - dquote; - sindex++; - break; - } - } - *r = '\0'; - return (result_string); -} - -#if 0 -/* UNUSED */ -/* Perform quote removal on word WORD. This allocates and returns a new - WORD_DESC *. */ -WORD_DESC * -word_quote_removal (word, quoted) - WORD_DESC *word; - int quoted; -{ - WORD_DESC *w; - char *t; - - t = string_quote_removal (word->word, quoted); - w = alloc_word_desc (); - w->word = t ? t : savestring (""); - return (w); -} - -/* Perform quote removal on all words in LIST. If QUOTED is non-zero, - the members of the list are treated as if they are surrounded by - double quotes. Return a new list, or NULL if LIST is NULL. */ -WORD_LIST * -word_list_quote_removal (list, quoted) - WORD_LIST *list; - int quoted; -{ - WORD_LIST *result, *t, *tresult, *e; - - for (t = list, result = (WORD_LIST *)NULL; t; t = t->next) - { - tresult = make_word_list (word_quote_removal (t->word, quoted), (WORD_LIST *)NULL); -#if 0 - result = (WORD_LIST *) list_append (result, tresult); -#else - if (result == 0) - result = e = tresult; - else - { - e->next = tresult; - while (e->next) - e = e->next; - } -#endif - } - return (result); -} -#endif - -/******************************************* - * * - * Functions to perform word splitting * - * * - *******************************************/ - -void -setifs (v) - SHELL_VAR *v; -{ - char *t; - unsigned char uc; - - ifs_var = v; - ifs_value = (v && value_cell (v)) ? value_cell (v) : " \t\n"; - - /* Should really merge ifs_cmap with sh_syntaxtab. XXX - doesn't yet - handle multibyte chars in IFS */ - memset (ifs_cmap, '\0', sizeof (ifs_cmap)); - for (t = ifs_value ; t && *t; t++) - { - uc = *t; - ifs_cmap[uc] = 1; - } - -#if defined (HANDLE_MULTIBYTE) - if (ifs_value == 0) - { - ifs_firstc[0] = '\0'; - ifs_firstc_len = 1; - } - else - { - size_t ifs_len; - ifs_len = strnlen (ifs_value, MB_CUR_MAX); - ifs_firstc_len = MBLEN (ifs_value, ifs_len); - if (ifs_firstc_len == 1 || ifs_firstc_len == 0 || MB_INVALIDCH (ifs_firstc_len)) - { - ifs_firstc[0] = ifs_value[0]; - ifs_firstc[1] = '\0'; - ifs_firstc_len = 1; - } - else - memcpy (ifs_firstc, ifs_value, ifs_firstc_len); - } -#else - ifs_firstc = ifs_value ? *ifs_value : 0; -#endif -} - -char * -getifs () -{ - return ifs_value; -} - -/* This splits a single word into a WORD LIST on $IFS, but only if the word - is not quoted. list_string () performs quote removal for us, even if we - don't do any splitting. */ -WORD_LIST * -word_split (w, ifs_chars) - WORD_DESC *w; - char *ifs_chars; -{ - WORD_LIST *result; - - if (w) - { - char *xifs; - - xifs = ((w->flags & W_QUOTED) || ifs_chars == 0) ? "" : ifs_chars; - result = list_string (w->word, xifs, w->flags & W_QUOTED); - } - else - result = (WORD_LIST *)NULL; - - return (result); -} - -/* Perform word splitting on LIST and return the RESULT. It is possible - to return (WORD_LIST *)NULL. */ -static WORD_LIST * -word_list_split (list) - WORD_LIST *list; -{ - WORD_LIST *result, *t, *tresult, *e; - - for (t = list, result = (WORD_LIST *)NULL; t; t = t->next) - { - tresult = word_split (t->word, ifs_value); - if (result == 0) - result = e = tresult; - else - { - e->next = tresult; - while (e->next) - e = e->next; - } - } - return (result); -} - -/************************************************** - * * - * Functions to expand an entire WORD_LIST * - * * - **************************************************/ - -/* Do any word-expansion-specific cleanup and jump to top_level */ -static void -exp_jump_to_top_level (v) - int v; -{ - set_pipestatus_from_exit (last_command_exit_value); - - /* Cleanup code goes here. */ - expand_no_split_dollar_star = 0; /* XXX */ - expanding_redir = 0; - assigning_in_environment = 0; - - if (parse_and_execute_level == 0) - top_level_cleanup (); /* from sig.c */ - - jump_to_top_level (v); -} - -/* Put NLIST (which is a WORD_LIST * of only one element) at the front of - ELIST, and set ELIST to the new list. */ -#define PREPEND_LIST(nlist, elist) \ - do { nlist->next = elist; elist = nlist; } while (0) - -/* Separate out any initial variable assignments from TLIST. If set -k has - been executed, remove all assignment statements from TLIST. Initial - variable assignments and other environment assignments are placed - on SUBST_ASSIGN_VARLIST. */ -static WORD_LIST * -separate_out_assignments (tlist) - WORD_LIST *tlist; -{ - register WORD_LIST *vp, *lp; - - if (tlist == 0) - return ((WORD_LIST *)NULL); - - if (subst_assign_varlist) - dispose_words (subst_assign_varlist); /* Clean up after previous error */ - - subst_assign_varlist = (WORD_LIST *)NULL; - vp = lp = tlist; - - /* Separate out variable assignments at the start of the command. - Loop invariant: vp->next == lp - Loop postcondition: - lp = list of words left after assignment statements skipped - tlist = original list of words - */ - while (lp && (lp->word->flags & W_ASSIGNMENT)) - { - vp = lp; - lp = lp->next; - } - - /* If lp != tlist, we have some initial assignment statements. - We make SUBST_ASSIGN_VARLIST point to the list of assignment - words and TLIST point to the remaining words. */ - if (lp != tlist) - { - subst_assign_varlist = tlist; - /* ASSERT(vp->next == lp); */ - vp->next = (WORD_LIST *)NULL; /* terminate variable list */ - tlist = lp; /* remainder of word list */ - } - - /* vp == end of variable list */ - /* tlist == remainder of original word list without variable assignments */ - if (!tlist) - /* All the words in tlist were assignment statements */ - return ((WORD_LIST *)NULL); - - /* ASSERT(tlist != NULL); */ - /* ASSERT((tlist->word->flags & W_ASSIGNMENT) == 0); */ - - /* If the -k option is in effect, we need to go through the remaining - words, separate out the assignment words, and place them on - SUBST_ASSIGN_VARLIST. */ - if (place_keywords_in_env) - { - WORD_LIST *tp; /* tp == running pointer into tlist */ - - tp = tlist; - lp = tlist->next; - - /* Loop Invariant: tp->next == lp */ - /* Loop postcondition: tlist == word list without assignment statements */ - while (lp) - { - if (lp->word->flags & W_ASSIGNMENT) - { - /* Found an assignment statement, add this word to end of - subst_assign_varlist (vp). */ - if (!subst_assign_varlist) - subst_assign_varlist = vp = lp; - else - { - vp->next = lp; - vp = lp; - } - - /* Remove the word pointed to by LP from TLIST. */ - tp->next = lp->next; - /* ASSERT(vp == lp); */ - lp->next = (WORD_LIST *)NULL; - lp = tp->next; - } - else - { - tp = lp; - lp = lp->next; - } - } - } - return (tlist); -} - -#define WEXP_VARASSIGN 0x001 -#define WEXP_BRACEEXP 0x002 -#define WEXP_TILDEEXP 0x004 -#define WEXP_PARAMEXP 0x008 -#define WEXP_PATHEXP 0x010 - -/* All of the expansions, including variable assignments at the start of - the list. */ -#define WEXP_ALL (WEXP_VARASSIGN|WEXP_BRACEEXP|WEXP_TILDEEXP|WEXP_PARAMEXP|WEXP_PATHEXP) - -/* All of the expansions except variable assignments at the start of - the list. */ -#define WEXP_NOVARS (WEXP_BRACEEXP|WEXP_TILDEEXP|WEXP_PARAMEXP|WEXP_PATHEXP) - -/* All of the `shell expansions': brace expansion, tilde expansion, parameter - expansion, command substitution, arithmetic expansion, word splitting, and - quote removal. */ -#define WEXP_SHELLEXP (WEXP_BRACEEXP|WEXP_TILDEEXP|WEXP_PARAMEXP) - -/* Take the list of words in LIST and do the various substitutions. Return - a new list of words which is the expanded list, and without things like - variable assignments. */ - -WORD_LIST * -expand_words (list) - WORD_LIST *list; -{ - return (expand_word_list_internal (list, WEXP_ALL)); -} - -/* Same as expand_words (), but doesn't hack variable or environment - variables. */ -WORD_LIST * -expand_words_no_vars (list) - WORD_LIST *list; -{ - return (expand_word_list_internal (list, WEXP_NOVARS)); -} - -WORD_LIST * -expand_words_shellexp (list) - WORD_LIST *list; -{ - return (expand_word_list_internal (list, WEXP_SHELLEXP)); -} - -static WORD_LIST * -glob_expand_word_list (tlist, eflags) - WORD_LIST *tlist; - int eflags; -{ - char **glob_array, *temp_string; - register int glob_index; - WORD_LIST *glob_list, *output_list, *disposables, *next; - WORD_DESC *tword; - - output_list = disposables = (WORD_LIST *)NULL; - glob_array = (char **)NULL; - while (tlist) - { - /* For each word, either globbing is attempted or the word is - added to orig_list. If globbing succeeds, the results are - added to orig_list and the word (tlist) is added to the list - of disposable words. If globbing fails and failed glob - expansions are left unchanged (the shell default), the - original word is added to orig_list. If globbing fails and - failed glob expansions are removed, the original word is - added to the list of disposable words. orig_list ends up - in reverse order and requires a call to REVERSE_LIST to - be set right. After all words are examined, the disposable - words are freed. */ - next = tlist->next; - - /* If the word isn't an assignment and contains an unquoted - pattern matching character, then glob it. */ - if ((tlist->word->flags & W_NOGLOB) == 0 && - unquoted_glob_pattern_p (tlist->word->word)) - { - glob_array = shell_glob_filename (tlist->word->word); - - /* Handle error cases. - I don't think we should report errors like "No such file - or directory". However, I would like to report errors - like "Read failed". */ - - if (glob_array == 0 || GLOB_FAILED (glob_array)) - { - glob_array = (char **)xmalloc (sizeof (char *)); - glob_array[0] = (char *)NULL; - } - - /* Dequote the current word in case we have to use it. */ - if (glob_array[0] == NULL) - { - temp_string = dequote_string (tlist->word->word); - free (tlist->word->word); - tlist->word->word = temp_string; - } - - /* Make the array into a word list. */ - glob_list = (WORD_LIST *)NULL; - for (glob_index = 0; glob_array[glob_index]; glob_index++) - { - tword = make_bare_word (glob_array[glob_index]); - tword->flags |= W_GLOBEXP; /* XXX */ - glob_list = make_word_list (tword, glob_list); - } - - if (glob_list) - { - output_list = (WORD_LIST *)list_append (glob_list, output_list); - PREPEND_LIST (tlist, disposables); - } - else if (fail_glob_expansion != 0) - { - last_command_exit_value = EXECUTION_FAILURE; - report_error (_("no match: %s"), tlist->word->word); - exp_jump_to_top_level (DISCARD); - } - else if (allow_null_glob_expansion == 0) - { - /* Failed glob expressions are left unchanged. */ - PREPEND_LIST (tlist, output_list); - } - else - { - /* Failed glob expressions are removed. */ - PREPEND_LIST (tlist, disposables); - } - } - else - { - /* Dequote the string. */ - temp_string = dequote_string (tlist->word->word); - free (tlist->word->word); - tlist->word->word = temp_string; - PREPEND_LIST (tlist, output_list); - } - - strvec_dispose (glob_array); - glob_array = (char **)NULL; - - tlist = next; - } - - if (disposables) - dispose_words (disposables); - - if (output_list) - output_list = REVERSE_LIST (output_list, WORD_LIST *); - - return (output_list); -} - -#if defined (BRACE_EXPANSION) -static WORD_LIST * -brace_expand_word_list (tlist, eflags) - WORD_LIST *tlist; - int eflags; -{ - register char **expansions; - char *temp_string; - WORD_LIST *disposables, *output_list, *next; - WORD_DESC *w; - int eindex; - - for (disposables = output_list = (WORD_LIST *)NULL; tlist; tlist = next) - { - next = tlist->next; - - if ((tlist->word->flags & (W_COMPASSIGN|W_ASSIGNARG)) == (W_COMPASSIGN|W_ASSIGNARG)) - { -/*itrace("brace_expand_word_list: %s: W_COMPASSIGN|W_ASSIGNARG", tlist->word->word);*/ - PREPEND_LIST (tlist, output_list); - continue; - } - - /* Only do brace expansion if the word has a brace character. If - not, just add the word list element to BRACES and continue. In - the common case, at least when running shell scripts, this will - degenerate to a bunch of calls to `mbschr', and then what is - basically a reversal of TLIST into BRACES, which is corrected - by a call to REVERSE_LIST () on BRACES when the end of TLIST - is reached. */ - if (mbschr (tlist->word->word, LBRACE)) - { - expansions = brace_expand (tlist->word->word); - - for (eindex = 0; temp_string = expansions[eindex]; eindex++) - { - w = alloc_word_desc (); - w->word = temp_string; - - /* If brace expansion didn't change the word, preserve - the flags. We may want to preserve the flags - unconditionally someday -- XXX */ - if (STREQ (temp_string, tlist->word->word)) - w->flags = tlist->word->flags; - else - w = make_word_flags (w, temp_string); - - output_list = make_word_list (w, output_list); - } - free (expansions); - - /* Add TLIST to the list of words to be freed after brace - expansion has been performed. */ - PREPEND_LIST (tlist, disposables); - } - else - PREPEND_LIST (tlist, output_list); - } - - if (disposables) - dispose_words (disposables); - - if (output_list) - output_list = REVERSE_LIST (output_list, WORD_LIST *); - - return (output_list); -} -#endif - -#if defined (ARRAY_VARS) -/* Take WORD, a compound associative array assignment, and internally run - 'declare -A w', where W is the variable name portion of WORD. */ -static int -make_internal_declare (word, option) - char *word; - char *option; -{ - int t; - WORD_LIST *wl; - WORD_DESC *w; - - w = make_word (word); - - t = assignment (w->word, 0); - w->word[t] = '\0'; - - wl = make_word_list (w, (WORD_LIST *)NULL); - wl = make_word_list (make_word (option), wl); - - return (declare_builtin (wl)); -} -#endif - -static WORD_LIST * -shell_expand_word_list (tlist, eflags) - WORD_LIST *tlist; - int eflags; -{ - WORD_LIST *expanded, *orig_list, *new_list, *next, *temp_list; - int expanded_something, has_dollar_at; - char *temp_string; - - /* We do tilde expansion all the time. This is what 1003.2 says. */ - new_list = (WORD_LIST *)NULL; - for (orig_list = tlist; tlist; tlist = next) - { - temp_string = tlist->word->word; - - next = tlist->next; - -#if defined (ARRAY_VARS) - /* If this is a compound array assignment to a builtin that accepts - such assignments (e.g., `declare'), take the assignment and perform - it separately, handling the semantics of declarations inside shell - functions. This avoids the double-evaluation of such arguments, - because `declare' does some evaluation of compound assignments on - its own. */ - if ((tlist->word->flags & (W_COMPASSIGN|W_ASSIGNARG)) == (W_COMPASSIGN|W_ASSIGNARG)) - { - int t; - - if (tlist->word->flags & W_ASSIGNASSOC) - make_internal_declare (tlist->word->word, "-A"); - - t = do_word_assignment (tlist->word, 0); - if (t == 0) - { - last_command_exit_value = EXECUTION_FAILURE; - exp_jump_to_top_level (DISCARD); - } - - /* Now transform the word as ksh93 appears to do and go on */ - t = assignment (tlist->word->word, 0); - tlist->word->word[t] = '\0'; - tlist->word->flags &= ~(W_ASSIGNMENT|W_NOSPLIT|W_COMPASSIGN|W_ASSIGNARG|W_ASSIGNASSOC); - } -#endif - - expanded_something = 0; - expanded = expand_word_internal - (tlist->word, 0, 0, &has_dollar_at, &expanded_something); - - if (expanded == &expand_word_error || expanded == &expand_word_fatal) - { - /* By convention, each time this error is returned, - tlist->word->word has already been freed. */ - tlist->word->word = (char *)NULL; - - /* Dispose our copy of the original list. */ - dispose_words (orig_list); - /* Dispose the new list we're building. */ - dispose_words (new_list); - - last_command_exit_value = EXECUTION_FAILURE; - if (expanded == &expand_word_error) - exp_jump_to_top_level (DISCARD); - else - exp_jump_to_top_level (FORCE_EOF); - } - - /* Don't split words marked W_NOSPLIT. */ - if (expanded_something && (tlist->word->flags & W_NOSPLIT) == 0) - { - temp_list = word_list_split (expanded); - dispose_words (expanded); - } - else - { - /* If no parameter expansion, command substitution, process - substitution, or arithmetic substitution took place, then - do not do word splitting. We still have to remove quoted - null characters from the result. */ - word_list_remove_quoted_nulls (expanded); - temp_list = expanded; - } - - expanded = REVERSE_LIST (temp_list, WORD_LIST *); - new_list = (WORD_LIST *)list_append (expanded, new_list); - } - - if (orig_list) - dispose_words (orig_list); - - if (new_list) - new_list = REVERSE_LIST (new_list, WORD_LIST *); - - return (new_list); -} - -/* The workhorse for expand_words () and expand_words_no_vars (). - First arg is LIST, a WORD_LIST of words. - Second arg EFLAGS is a flags word controlling which expansions are - performed. - - This does all of the substitutions: brace expansion, tilde expansion, - parameter expansion, command substitution, arithmetic expansion, - process substitution, word splitting, and pathname expansion, according - to the bits set in EFLAGS. Words with the W_QUOTED or W_NOSPLIT bits - set, or for which no expansion is done, do not undergo word splitting. - Words with the W_NOGLOB bit set do not undergo pathname expansion. */ -static WORD_LIST * -expand_word_list_internal (list, eflags) - WORD_LIST *list; - int eflags; -{ - WORD_LIST *new_list, *temp_list; - int tint; - - if (list == 0) - return ((WORD_LIST *)NULL); - - garglist = new_list = copy_word_list (list); - if (eflags & WEXP_VARASSIGN) - { - garglist = new_list = separate_out_assignments (new_list); - if (new_list == 0) - { - if (subst_assign_varlist) - { - /* All the words were variable assignments, so they are placed - into the shell's environment. */ - for (temp_list = subst_assign_varlist; temp_list; temp_list = temp_list->next) - { - this_command_name = (char *)NULL; /* no arithmetic errors */ - tint = do_word_assignment (temp_list->word, 0); - /* Variable assignment errors in non-interactive shells - running in Posix.2 mode cause the shell to exit. */ - if (tint == 0) - { - last_command_exit_value = EXECUTION_FAILURE; - if (interactive_shell == 0 && posixly_correct) - exp_jump_to_top_level (FORCE_EOF); - else - exp_jump_to_top_level (DISCARD); - } - } - dispose_words (subst_assign_varlist); - subst_assign_varlist = (WORD_LIST *)NULL; - } - return ((WORD_LIST *)NULL); - } - } - - /* Begin expanding the words that remain. The expansions take place on - things that aren't really variable assignments. */ - -#if defined (BRACE_EXPANSION) - /* Do brace expansion on this word if there are any brace characters - in the string. */ - if ((eflags & WEXP_BRACEEXP) && brace_expansion && new_list) - new_list = brace_expand_word_list (new_list, eflags); -#endif /* BRACE_EXPANSION */ - - /* Perform the `normal' shell expansions: tilde expansion, parameter and - variable substitution, command substitution, arithmetic expansion, - and word splitting. */ - new_list = shell_expand_word_list (new_list, eflags); - - /* Okay, we're almost done. Now let's just do some filename - globbing. */ - if (new_list) - { - if ((eflags & WEXP_PATHEXP) && disallow_filename_globbing == 0) - /* Glob expand the word list unless globbing has been disabled. */ - new_list = glob_expand_word_list (new_list, eflags); - else - /* Dequote the words, because we're not performing globbing. */ - new_list = dequote_list (new_list); - } - - if ((eflags & WEXP_VARASSIGN) && subst_assign_varlist) - { - sh_wassign_func_t *assign_func; - int is_special_builtin, is_builtin_or_func; - - /* If the remainder of the words expand to nothing, Posix.2 requires - that the variable and environment assignments affect the shell's - environment. */ - assign_func = new_list ? assign_in_env : do_word_assignment; - tempenv_assign_error = 0; - - is_builtin_or_func = (new_list && new_list->word && (find_shell_builtin (new_list->word->word) || find_function (new_list->word->word))); - /* Posix says that special builtins exit if a variable assignment error - occurs in an assignment preceding it. */ - is_special_builtin = (posixly_correct && new_list && new_list->word && find_special_builtin (new_list->word->word)); - - for (temp_list = subst_assign_varlist; temp_list; temp_list = temp_list->next) - { - this_command_name = (char *)NULL; - assigning_in_environment = (assign_func == assign_in_env); - tint = (*assign_func) (temp_list->word, is_builtin_or_func); - assigning_in_environment = 0; - /* Variable assignment errors in non-interactive shells running - in Posix.2 mode cause the shell to exit. */ - if (tint == 0) - { - if (assign_func == do_word_assignment) - { - last_command_exit_value = EXECUTION_FAILURE; - if (interactive_shell == 0 && posixly_correct && is_special_builtin) - exp_jump_to_top_level (FORCE_EOF); - else - exp_jump_to_top_level (DISCARD); - } - else - tempenv_assign_error++; - } - } - - dispose_words (subst_assign_varlist); - subst_assign_varlist = (WORD_LIST *)NULL; - } - -#if 0 - tint = list_length (new_list) + 1; - RESIZE_MALLOCED_BUFFER (glob_argv_flags, 0, tint, glob_argv_flags_size, 16); - for (tint = 0, temp_list = new_list; temp_list; temp_list = temp_list->next) - glob_argv_flags[tint++] = (temp_list->word->flags & W_GLOBEXP) ? '1' : '0'; - glob_argv_flags[tint] = '\0'; -#endif - - return (new_list); -} diff --git a/tests/misc/regress/log.orig b/tests/misc/regress/log.orig deleted file mode 100644 index c1f1e1991..000000000 --- a/tests/misc/regress/log.orig +++ /dev/null @@ -1,50 +0,0 @@ -:; ./shx - -sh: -<&$fd ok -nlbq Mon Aug 3 02:45:00 EDT 1992 -bang geoff -quote 712824302 -setbq defmsgid=<1992Aug3.024502.6176@host> -bgwait sleep done... wait 6187 - - -bash: -<&$fd ok -nlbq Mon Aug 3 02:45:09 EDT 1992 -bang geoff -quote 712824311 -setbq defmsgid=<1992Aug3.024512.6212@host> -bgwait sleep done... wait 6223 - - -ash: -<&$fd shx1: 4: Syntax error: Bad fd number -nlbq Mon Aug 3 02:45:19 EDT 1992 -bang geoff -quote getdate: `"now"' not a valid date - -setbq defmsgid=<1992Aug3.` echo 024521 -bgwait sleep done... wait 6241 - - -ksh: -<&$fd ok -nlbq ./shx: 6248 Memory fault - core dumped -bang geoff -quote getdate: `"now"' not a valid date - -setbq defmsgid=<1992Aug3.024530.6257@host> -bgwait no such job: 6265 -wait 6265 -sleep done... - -zsh: -<&$fd ok -nlbq Mon Aug 3 02:45:36 EDT 1992 -bang shx3: event not found: /s/ [4] -quote 712824337 -setbq defmsgid=<..6290@host> -bgwait shx7: unmatched " [9] -sleep done... -:; diff --git a/tests/misc/regress/shx.orig b/tests/misc/regress/shx.orig deleted file mode 100644 index 4b3bf2b82..000000000 --- a/tests/misc/regress/shx.orig +++ /dev/null @@ -1,10 +0,0 @@ -#! /bin/sh -for cmd in sh bash ash ksh zsh -do - echo - echo $cmd: - for demo in shx? - do - $cmd $demo - done -done