+++ /dev/null
- 2/14/2011
- ---------
-[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 <dearvoid@gmail.com>
-
- 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 <jue@jue.li>
-
-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
- <dearvoid@gmail.com>
-
-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 <dearvoid@gmail.com>
-
-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
- <vapier@gentoo.org>
-
- 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 <dennistwilliamson@gmail.com>
-
-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 <jojo@schmitz-digital.de>
-
-support/shobj-conf
- - add a stanza for nsk on the Tandem from Joachim Schmitz
- <jojo@schmitz-digital.de>
-
-{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
- <jojo@schmitz-digital.de>
-
- 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 <foutrelis@gmail.com>
-
- 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 <mfwitten@gmail.com>
-
-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
- <nathanael@gnat.ca> and Matthias Klose <doko@debian.org>
-
-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 <mfwitten@gmail.com>
- - 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 <mfwitten@gmail.com>
- - 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 <mfwitten@gmail.com>
- - 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 <mfwitten@gmail.com>
-
-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 <andres.p@zoho.com>
-
- 3/4
- ---
-lib/readline/bind.c
- - add a missing free of `names' in rl_function_dumper. Bug report
- and fix from Michael Snyder <msnyder@vmware.com>
-
- 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 <micah@cowan.name>
-
- 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 <torvalds@linux-foundation.org>, bug report originally
- from Oleg Nesterov <oleg@redhat.com>
-
- 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 <cfajohnson@gmail.com>
-
-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 <rrakus@redhat.com>
-
- 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 <werner@suse.de>
- - 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 <sam@liddicott.com>
-
- 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 <blue3waters@gmail.com>
-
- 3/26
- ----
-lib/readline/rltypedefs.h
- - remove old Function/VFunction/CPFunction/CPPFunction typedefs as
- suggested by Tom Tromey <tromey@redhat.com>
-
-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
- <tromey@redhat.com>
-
- 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 <dennistwilliamson@gmail.com>
-
-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 <h.bekel@googlemail.com>
-
- 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 <mfwitten@gmail.com>
-
-lib/readline/display.c
- - include <pc.h> 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 <pc.h> 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 <eliz@gnu.org>
-
- 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 <arbogast.cedric@gmail.com>
-
- 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 <mdinger.bugzilla@gmail.com>
-
-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 <dearvoid@gmail.com>
-
- 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 <rrakus@redhat.com>
-
- 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
- <piuma@piumalab.org>
-
- 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." <skunk@iSKUNK.ORG>
-
- 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
- <johan.hattne@utsouthwestern.edu>
-
- 5/2
- ---
-doc/{bash.1,bashref.texi}
- - add forward reference to `Pattern Matching' from `Pathname
- Expansion', suggested by Greg Wooledge <wooledg@eeg.ccf.org>
-
- 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 \<CTLESC> 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 <sbohrer@rgmadvisors.com>
-
- 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 <rrakus@redhat.com>
-
- 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 <rbyshko@gmail.com>
-
- 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 <marten.wikstrom@keystream.se>
-
- 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 <arbogast.cedric@gmail.com>
-
- 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 <mlichvar@redhat.com>
-
-builtins/help.def
- - help_builtin: change strncmp to strcmp so that `help read' no longer
- matches `readonly'. Suggested by Clark Wang <dearvoid@gmail.com>
-
-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 <samuel.thibault@gnu.org>
-
-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
- <d.l.tDecontes@free.fr>
-
- 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
- <keithw@mit.edu>
-
-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
- <cubranic@stat.ubc.ca>
-
- 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 <eblake@redhat.com>
-
- 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
- <kulkarniniraj14@gmail.com>
-
-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
- <mark.herbert@gmail.com>
-
-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
- <qiaomuf@gentoo.org>
-
- 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 <jrnieder@gmail.com>
-
-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
- <curtis@greenkey.net>
-
- 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 <lrhorer@satx.rr.com>
-
-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 <ville.skytta@iki.fi>
-
-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 <rsantos@grupopie.com>
-
-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 glob_asciirange is non-zero, we use straight
- C-locale-like ordering. Suggested by Aharon Robbins
- <arnold@skeeve.com>
-
- 6/30
- ----
-execute_cmd.c
- - execute_pipeline: make sure the lastpipe code is protected by
- #ifdef JOB_CONTROL. Fixes problem reported by Thomas Cort
- <tcort@minix3.org>
-
- 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 <jan.ktratochvil@redhat.com> 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 <arnold@skeeve.com>
-
- 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 <dearvoid@gmail.com>
- - _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
- <jan.kratochvil@redhat.com>
-
-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 <ralph@inputplus.co.uk>
-
- 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
- <mlichvar@redhat.com>
-
-builtins/printf.def
- - getint: if garglist == 0, return whatever getintmax returns (0).
- Fixes bug reported by Ralph Coredroy <ralph@inputplus.co.uk>
-
- 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 <gmargo@pacbell.net>
-
- 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
- <lhunath@lyndir.com>
-
- 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 <bash@tlinx.org>.
- 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
- <ohnobinki@ohnopublishing.net> -- 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 <vince.sheffer@apisphere.com>
-
-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 <rrakus@redhat.com>
-
- 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
- <rrakus@redhat.com>
-
- 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 <diegoaugustomolina@gmail.com>
-
- 9/19
- ----
-expr.c
- - exppower: replace the simple exponentiation algorithm with an
- implementation of exponentiation by squaring. Inspired by report
- from Nicolas ARGYROU <nargy@yahoo.com>
-
-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 <backuppc-users@whitleymott.net>
-
-doc/{bash.1,bashref.texi},lib/readline/doc/{hsuser,rluser}.texi
- - minor editorial changes inspired by suggestions from
- Roger Zauner <rogerx.oss@gmail.com>
-
- 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
- <bensberg@justemail.net>
- - 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 <daysleeper@centrum.cz>
-
- 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
- <bugs@kayari.org>
- - 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 <pto@linuxbog.dk> and Patrick Pfeifer
- <patrick@pfeifer.de>
- - 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 <patrick@pfeifer.de>
-
-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 <dearvoid@gmail.com>
-
-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 <davidparks21@yahoo.com>
-
- 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 <jreiser@bitwagon.com>
- 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 <vapier@gentoo.org> 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 <vapier@gentoo.org> 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 <Len.Giambrone@intersystems.com>
-
- 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
- <wooledg@eeg.ccf.org>
-
- 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 <lolilolicon@gmail.com>
-
- 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 <michael@kalisz.homelinux.net>
-
- 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 <jaak.ristioja@cyber.ee>
- - 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 <ormaaj@gmail.com>
-
- 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 <vapier@gentoo.org>
-
- 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
- <jens.schmidt35@arcor.de>
-
-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 <jan.ktratochvil@redhat.com> 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
- <stephane_chazelas@yahoo.fr>
-
-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 <eggert@cs.ucla.edu>
-
- 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 <schwab@linux-m68k.org>
-
-builtins/read.def
- - skip over NUL bytes in input, as most modern shells seem to. Bug
- report by Matthew Story <matt@tablethotels.com>
-
-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
- <pierre.gaston@gmail.com>
-
-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
- <g.clare@opengroup.org> 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 <yanegomi@gmail.com>
- - 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
- <yanegomi@gmail.com>
- - 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 <yanegomi@gmail.com>
- - 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
- <panyongzhi@gmail.com>
-
- 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 <panyongzhi@gmail.com>
- - 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
- <dearvoid@gmail.com>
-
- 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 <hanzl@noel.feld.cvut.cz>
-
- 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
- <kazikcz@gmail.com>
-
- 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 <dethrophes@motd005>
-
-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 <raphael.droz+floss@gmail.com>
- - 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
- <ormaaj@gmail.com>
-
-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 <pengyu.ut@gmail.com>
-
- 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
- <bill@ycc.com>
-
- 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 <p@draigbrady.com>
- - 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
- <raphael.droz+floss@gmail.com>
-
-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 <sungpae@gmail.com>
-
- 1/18
- ----
-
-{configure,config.h}.in
- - new check: check for AUDIT_USER_TTY defined in <linux/audit.h>,
- 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 <mlichvar@redhat.com>
-
- 1/21
- ----
-
-lib/readline/readline.c:
- - _rl_dispatch_subseq: add an inter-character timeout for multi-char
- key sequences. Suggested by <rogerx.oss@gmail.com>. 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 <ormaaj@gmail.com>
-
-
- 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
- <pierre.muller@ics-cnrs.unistra.fr>
-
-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 <bash@tlinx.org>
-
- 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 <james_avera@yahoo.com>
-
- 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 <rogerx.oss@gmail.com>
- - _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
- <rogerx.oss@gmail.com>
-
- 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 <schwab@linux-m68k.org>
-
-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
- <Ewan.Mellor@eu.citrix.com>
-
-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
- <ormaaj@gmail.com>
-
-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 <ormaaj@gmail.com>
-
- 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 <dethrophes@web.de>
-
-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 <dethrophes@web.de>
- - 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 <dethrophes@web.de>
-
- 2/21
- ----
-doc/{bash,builtins}.1
- - minor changes from Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
-
-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 <derflob@derflob.de>
-
- 2/22
- ----
-lib/sh/shquote.c
- - sh_backslash_quote: quote tilde in places where it would be
- expanded. From a report from John Kearney <dethrophes@web.de>
-
- 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 <rdkehn@yahoo.com>
-
- 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 <dethrophes@web.de>
- - u32toutf16: function to convert unsigned 32-bit value (unicode) to
- UTF-16. From John Kearney <dethrophes@web.de>
- - 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 <dethrophes@web.de>
- - u32cconv: return UTF-8 conversion if iconv conversion to local
- charset is unsupported
-
- 3/2
- ---
-lib/readline/complete.c
- - print_filename: if there is no directory hook, but there is a stat
- hook, and we want to append a slash to directories, call the stat
- hook before calling path_isdir on the expanded directory name.
- Report and pointer to fix from Steve Rago <sar@nec-labs.com>
-
- 3/3
- ---
-builtins/evalstring.c
- - parse_and_execute: fix to change of 2/18: make sure the file
- descriptor being redirected to is 0 before calling cat_file when
- we see something like $(< file). Real fix for bug reported by
- Dan Douglas <ormaaj@gmail.com>
-
-subst.c
- - parameter_brace_patsub: run the replacement string through quote
- removal even if the expansion is within double quotes, because
- the parser and string extract functions treat the quotes and
- backslashes as special. If they're treated as special, quote
- removal should remove them (this is the Posix position and
- compatible with ksh93). THIS IS NOT BACKWARDS COMPATIBLE.
-
- 3/4
- ---
-lib/readline/complete.c
- - rl_menu_complete: fix to make show-all-if-ambiguous and
- menu-complete-display-prefix work together if both are set. Fix
- from Sami Pietila <sami.pietila@gmail.com>
-
- 3/5
- ---
-bashline.c
- - dircomplete_expand_relpath: new variable, if non-zero, means that
- `shopt -s direxpand' should expand relative pathnames. Zero by
- default, not user-settable yet
- - bash_directory_completion_hook: if we have a relative pathname that
- isn't changed by canonicalization or spell checking after being
- appended to $PWD, then don't change what the user typed. Controlled
- by dircomplete_expand_relpath
-
- 3/7
- ---
-m4/timespec.m4
- - new macros, cribbed from gnulib and coreutils: find out whether we
- have `struct timespec' and what file includes it
-
-m4/stat-time.m4
- - new macros, cribbed from gnulib and coreutils: find out whether the
- mtime/atime/ctime/etctime fields of struct stat are of type
- struct timespec, and what the name is
-
-include/stat-time.h
- - new file, cribbed from gnulib, with additions from coreutils: include
- the right file to get the struct timespec define, or provide our own
- replacement. Provides a bunch of inline functions to turn the
- appropriate members of struct stat into `struct timespec' values,
- zeroing out the tv_nsec field if necessary
-
-test.c
- - include "stat-time.h" for the nanosecond timestamp resolution stuff
- - stat_mtime: new function, returns struct stat and the mod time
- normalized into a `struct timespec' for the filename passed as the
- first argument
- - filecomp: call stat_mtime instead of sh_stat for each filename
- argument to get the mtime as a struct timespec
- - filecomp: call timespec_cmp instead of using a straight arithmetic
- comparison for the -nt and -ot operators, using timespec returned by
- stat_mtime. Added functionality requested by by Werner Fink
- <werner@suse.de> for systems that can support it
-
- 3/10
- ----
-include/posixdir.h
- - REAL_DIR_ENTRY: remove dependency on _POSIX_SOURCE, only use feature
- test macros to decide whether dirent.d_ino is present and usable;
- define D_INO_AVAILABLE. Report and fix from Fabrizion Gennari
- <fabrizio.ge@tiscali.it>
- - D_FILENO_AVAILABLE: define if we can use dirent.d_fileno
-
-lib/sh/getcwd.c
- - use D_FILENO_AVAILABLE to decide whether or not to compile in
- _path_checkino and whether or not to call it. Report and initial
- fix from Fabrizion Gennari <fabrizio.ge@tiscali.it>
-
-lib/readline/signals.c
- - make sure all occurrences of SIGWINCH are protected by #ifdef
-
-sig.c
- - make sure all occurrences of SIGCHLD are protected by #ifdef
-
-nojobs.c
- - make sure SA_RESTART is defined to 0 if the OS doesn't define it
-
-version.c
- - show_shell_version: don't use string literals in printf, use %s.
- Has added benefit of removing newline from string to be translated
-
-trap.c
- - queue_sigchld_trap: new function, increments the number of pending
- SIGCHLD signals by the argument, which is by convention the number
- of children reaped in a call to waitchld()
-
-trap.h
- - queue_sigchld_trap: new extern declaration
-
-jobs.c
- - waitchld: if called from the SIGCHLD signal handler (sigchld > 0),
- then call queue_sigchld_trap to avoid running the trap in a signal
- handler context. Report and original fix from Siddhesh Poyarekar
- <siddhesh@redhat.com>
-
-lib/sh/unicode.c
- - u32tocesc: take an unsigned 32-bit quantity and encode it using
- ISO C99 string notation (\u/\U)
- - u32cconv: call u32tocesc as a fallback instead of u32cchar
- - u32cconv: call u32tocesc if iconv cannot convert the character.
- Maybe do the same thing if iconv_open fails
- - u32reset: call iconv_close on localconv if u32init == 1
-
- 3/11
- ----
-config-top.h
- - CHECKWINSIZE_DEFAULT: new define, set to initial value of
- check_window_size (shopt checkwinsize): 0 for off, 1 for on.
- Default is 0
-
-{jobs,nojobs}.c
- - check_window_size: default initial value to CHECKWINSIZE_DEFAULT
-
- 3/13
- ----
-doc/bashref.texi
- - change text referring to the copying restrictions to that
- recommended by the FSF (no Front-Cover Texts and no Back-Cover
- Texts)
-
-lib/readline/doc/{history,rlman,rluserman}.texi
- - change text referring to the copying restrictions to that
- recommended by the FSF (no Front-Cover Texts and no Back-Cover
- Texts)
-
- 3/15
- ----
-array.c
- - LASTREF_START: new macro to set the starting position for an array
- traversal to `lastref' if that's valid, and to the start of the array
- if not. Used in array_reference, array_insert, array_remove
- - array_remove: try to be a little smarter with lastref instead of
- unconditionally invalidating it
-
- 3/16
- ----
-array.c
- - array_insert: fix memory leak by deleting element to be added in the
- case of an error
-
- 3/18
- ----
-lib/sh/mbschr.c
- - mbschr: don't call mbrlen unless is_basic is false; devolves to a
- straight character-by-character run through the string
-
- 3/19
- ----
-stringlib.c
- - substring: use memcpy instead of strncpy, since we know the length
- and are going to add our own NUL terminator
-
- 3/20
- ----
-subst.c
- - parameter_brace_expand_rhs: if expand_string_for_rhs returns a quoted
- null string (a list with one element for which
- QUOTED_NULL(list->word->word) returns true), return the quoted null
- and set the flags in the returned word to indicate it. Fixes bug
- reported by Mark Edgar <medgar123@gmail.com>
-
-lib/sh/tmpfile.c
- - use random(3) instead of get_random_number to avoid perturbing the
- random sequence you get using $RANDOM. Bug report and fix from
- Jurij Mihelic <jurij.mihelic@fri.uni-lj.si>
-
- 3/21
- ----
-config-top.h
- - OPTIMIZE_SEQUENTIAL_ARRAY_ASSIGNMENT: define to 1 to optimize
- sequential indexed array assignment patterns. Defined to 1 by
- default
-
-array.c
- - array_insert: if OPTIMIZE_SEQUENTIAL_ARRAY_ASSIGNMENT is defined,
- start the search at lastref (see change from 3/15)
-
- 3/27
- ----
-print_cmd.c
- - debug_print_word_list: new debugging function, prints a word list
- preceded by an optional string and using a caller-specified
- separator
-
- 4/1
- ---
-command.h
- - W_ASSNGLOBAL: new flag, set to indicate declare -g
-
-execute_cmd.c
- - fix_assignment_words: note that we have a -g argument to an assignment
- builtin and set the W_ASSNGLOBAL flag in the variable word
-
-subst.c
- - dump_word_flags: print out W_ASSNGLOBAL if present
- - do_assignment_internal: only set ASS_MKLOCAL if W_ASSIGNARG is set
- and W_ASSNGLOBAL is not. Don't want to create a local variable even
- if variable_context is non-zero if ASSNGLOBAL is set. Fixes bug
- reported by Bill Gradwohl <bill@ycc.com>
-
- 4/7
- ---
-lib/readline/readline.c
- - _rl_dispatch_subseq: make the `keyseq-timeout' variable apply to
- ESC processing when in vi mode. After hitting ESC, readline will
- wait up to _rl_keyseq_timeout*1000 microseconds (if set) for
- additional input before dispatching on the ESC and switching to
- command/movement mode. Completes timeout work suggested by
- <rogerx.oss@gmail.com>; this prompted by report from Barry Downes
- <barry.downes@gmail.com>
-
-lib/sh/shmbchar.c
- - sh_mbsnlen: new function, returns the number of (possibly multibyte)
- characters in a passed string with a passed length, examining at most
- maxlen (third argument) bytes
-
-externs.h
- - sh_mbsnlen: extern declaration for new function
-
-shell.c
- - exit_shell: call maybe_save_shell_history if remember_on_history is
- set, not just in interactive shells. That means the history is
- saved if history is enabled, regardless of whether or not the shell
- is interactive
-
-doc/{bash.1,bashref.texi}
- - TMOUT: fix description to make it explicit that TMOUT is the timeout
- period for a complete line of input, not just any input. Fixes
- problem reported in Ubuntu bug 957303:
- https://bugs.launchpad.net/ubuntu/+source/bash/+bug/957303
- - HISTFILE: document change to write history list to history file in
- any shell with history enabled, not just interactive shells. This
- seems to be more logical behavior. Suggested by Greg Wooledge
- <wooledg@eeg.ccf.org>
-
- 4/12
- ----
-lib/readline/colors.h
- - only include stdbool.h if HAVE_STDBOOL_H is defined
- - if HAVE_STDBOOL_H is not defined, provide enough definition for the
- library to use `bool', `true', and `false'
-
-lib/readline/parse-colors.[ch]
- - don't try to include <stdbool.h> at all; rely on colors.h to do it
-
-lib/sh/snprintf.c
- - vsnprintf_internal: only treat '0' as a flag to indicate zero padding
- if `.' hasn't been encountered ((flags&PF_DOT) == 0); otherwise treat
- it as the first digit of a precision specifier. Fixes bug reported
- by Petr Sumbera <petr.sumbera@sun.com>
-
- 4/15
- ----
-lib/sh/snprintf.c
- - vsnprintf_internal: if the '0' and '-' flags both occur, the '0'
- flag is ignored -- Posix. Start of a series of fixes based on
- tests and patches from Petr Sumbera <petr.sumbera@sun.com>
- - PUT_PLUS: make sure PF_PLUS flag is specified before putting the `+'
- - vsnprintf_internal: when '+' is read as a flag, don't set right-
- justify flag if the LADJUST (`-') flag has already been supplied
- - floating: make sure to output space padding before the `+', zero
- padding after
- - exponent: make sure to output space padding before the `+', zero
- padding after
- - exponent: only subtract one from the width for the decimal point
- if we're really going to print one
- - floating: use presence of PF_PLUS flag to decide whether to account
- for the `+' in the padded field width. Ditto for exponent()
-
- 4/16
- ----
-lib/sh/snprintf.c
- - vsnprint_internal: only reduce precision by 1 when processing the `g'
- format if it's > 0. A precision of 0 should stay 0; otherwise it
- gets set to -1 (NOT_FOUND) and converted to the default
- - number, lnumber: if an explicit precision is supplied, turn off the
- zero-padding flag and set the pad character back to space
- - number, lnumber: only account for a `+' when performing the field
- width calculation if the coversion is base 10; we don't add a `+'
- for other bases
-
- 4/18
- ----
-tests/printf3.sub
- - try using "perl -e 'print time'" to get the current time in seconds
- since the epoch if "date +%s" is not available (solaris 8-10)
-
- 4/19
- ----
-tests/run-printf
- - use cat -v instead of relying on diff -a being available to convert
- control characters to ascii and avoid the dreaded "Binary files
- /tmp/xx and printf.right differ"
-
- 4/20
- ----
-lib/sh/strftime.c
- - incoporated new version from Aharon Robbins <arnold@skeeve.com>
-
- 4/22
- ----
-doc/{bash.1,bashref.texi}
- - slight change to the description of /dev/tcp and /dev/udp
-
-subst.c
- - match_wpattern: logic fix to the calculation of `simple' (was |=,
- needs to be &=). Bug report from Mike Frysinger <vapier@gentoo.org>,
- fix from Andreas Schwab <schwab@linux-m68k.org>
-
-bashline.c
- - bash_filename_stat_hook: add code from bash_directory_completion_hook
- that performs pathname canonicalization in the same way that cd and
- other builtins will do
-
- 4/25
- ----
-execute_cmd.c
- - execute_pipeline: change the call to move_to_high_fd to make it use
- getdtablesize() and to not stomp on existing open file descriptors,
- like the fd the shell is using to read a script. Bug report from
- Greg Wooledge <wooledg@eeg.ccf.org>
-
- 5/6
- ---
-subst.c
- - expand_word_internal: case '$': after calling param_expand and
- setting had_quoted_null, set TEMP to null. The code that builds the
- returned string at the end of the function will take care of making
- and returning a quoted null string if there's nothing else in
- ISTRING. If there is, the quoted null should just go away. Part of
- fix for bug reported by Ruediger Kuhlmann <RKuhlmann@orga-systems.com>
- - expand_word_internal: when processing ISTRING to build return value,
- only set W_HASQUOTEDNULL in the returned word flags if the word is
- a quoted null string AND had_quoted_null is set. Rest of fix
-
- 5/9
- ---
-variables.c
- - bind_variable_internal: if we get an array variable here (implicit
- assignment to index 0), call make_array_variable_value, which
- dummies up a fake SHELL_VAR * from array[0]. This matters when
- we're appending and have to use the current value
- - bind_variable_internal: after computing the new value, treat assoc
- variables with higher precedence than simple array variables; it
- might be that a variable has both attributes set
-
-arrayfunc.c
- - bind_array_var_internal: break code out that handles creating the
- new value to be assigned to an array variable index into a new
- function, make_array_variable_value. This handles creating a
- dummy SHELL_VAR * for implicit array[0] assignment. Fixes bug
- reported by Dan Douglas <ormaaj@gmail.com>
-
-arrayfunc.h
- - make_array_variable_value: new extern declaration
-
- 5/19
- ----
-variables.c
- - bind_int_variable: if an assignment statement like x=y comes in
- from the expression evaluator, and x is an array, handle it like
- x[0]=y. Fixes bug reported by Dan Douglas <ormaaj@gmail.com>
-
- 5/24
- ----
-
-braces.c
- - mkseq: handle possible overflow and break the sequence generating
- loop if it occurs. Fixes OpenSUSE bug 763591:
- https://bugzilla.novell.com/show_bug.cgi?id=763591
-
- 5/25
- ----
-Makefile.in
- - LDFLAGS_FOR_BUILD: add to compilation recipes for build tools
- buildversion, mksignames, mksyntax
- - LDFLAGS_FOR_BUILD: add to compilation recipes for test tools
- recho, zecho, printenv, xcase
-
-builtins/Makefile.in
- - LDFLAGS_FOR_BUILD: add to compilation recipes for build tools
- gen-helpfiles, psize.aux
-
-variables.c
- - bind_int_variable: if LHS is a simple variable name without an array
- reference, but resolves to an array variable, call
- bind_array_variable with index 0 to make x=1 equivalent to x[0]=1.
- Fixes bug reported by Dan Douglas <ormaaj@gmail.com>
-
- 5/27
- ----
-subst.c
- - expand_word_internal: make sure has_dollar_at doesn't get reset before
- recursive calls to param_expand or expand_word_internal, since it has
- to save state of what came before. Use temp variable and make sure
- has_dollar_at is incremented if recursive call processes "$@".
- Fixes bug reported by gregrwm <backuppc-users@whitleymott.net> and
- supplemented by Dan Douglas <ormaaj@gmail.com>
-
-doc/{bash.1,bashref.texi}
- - changes to the description of substring expansion inspired by
- suggestions from Bill Gradwohl <bill@ycc.com>
-
-doc/bashref.texi
- - added substring expansion examples inspired by suggestions from
- Bill Gradwohl <bill@ycc.com>
-
-variables.c
- - find_shell_variable: search for a variable in the list of shell
- contexts, ignore the temporary environment
- - find_variable_tempenv: search for a variable in the list of shell
- contexts, force search of the temporary environment
- - find_variable_notempenv: search for a variable in the list of shell
- contexts, don't force search of the temporary environment
-
-variables.h
- - find_shell_variable: extern declaration
- - find_variable_tempenv: extern declaration
- - find_variable_notempenv: extern declaration
-
-arrayfunc.c
- - bind_array_variable: call find_shell_variable instead of calling
- var_lookup directly
-
-findcmd.c
- - search_for_command: call find_variable_tempenv instead of
- find_variable_internal directly
- - _find_user_command_internal: call find_variable_tempenv instead of
- find_variable_internal directly
-
-builtins/setattr.def
- - set_var_attribute: call find_variable_notempenv instead of
- find_variable_internal directly
- - show_name_attributes: call find_variable_tempenv instead of
- find_variable_internal directly
-
- 6/1
- ---
-sig.c
- - termsig_handler: don't try to save the shell history on a terminating
- signal any more, since it just causes too many problems on Linux
- systems using glibc and glibc malloc
-
-lib/readline/vi_mode.c
- - rl_vi_change_to: change to correctly redo `cc', since `c' is not a vi
- motion character. From Red Hat bug 813289
- - rl_vi_delete_to: change to correctly redo `dd', since `d' is not a vi
- motion character
- - rl_vi_yank_to: change to correctly redo `yy', since `y' is not a vi
- motion character
-
- 6/4
- ---
-lib/sh/mktime.c
- - current versions of VMS do not need to include <stddef.h>. Fix from
- John E. Malmberg <wb8tyw@qsl.net>
-
- 6/5
- ---
-lib/sh/eaccess.c
- - sh_stat: instead of using a static buffer to do the DEV_FD_PREFIX
- translation, use a dynamically-allocated buffer that we keep
- resizing. Fixes potential security hole reported by David Leverton
- <levertond@googlemail.com>
-
- 6/5
- ---
-braces.c
- - expand_seqterm: check errno == ERANGE after calling strtoimax for
- rhs and incr. Part of a set of fixes from Scott McMillan
- <scotty.mcmillan@gmail.com>
- - expand_seqterm: incr now of type `intmax_t', which changes
- arguments to mkseq
- - mkseq: a better fix for detecting overflow and underflow since it's
- undefined in C and compilers `optimize' out overflow checks. Uses
- ADDOVERFLOW and SUBOVERFLOW macros
- - mkseq: use sh_imaxabs (new macro) instead of abs() for intmax_t
- variables
- - mkseq: don't allow incr to be converted to -INTMAX_MIN
- - mkseq: make sure that strvec_create isn't called with a size argument
- greater than INT_MAX, since it only takes an int
-
- 6/6
- ---
-braces.c
- - mkseq: try and be smarter about not overallocating elements in
- the return array if the increment is not 1 or -1
-
- 6/7
- ---
-parse.y
- - history_delimiting_chars: if the parser says we're in the middle of
- a compound assignment (PST_COMPASSIGN), just return a space to avoid
- adding a stray semicolon to the history entry. Fixes bug reported
- by "Davide Brini" <dave_br@gmx.com>
-
- 6/8
- ---
-bashline.c
- - bash_directory_completion_hook: don't attempt spelling correction
- on the directory name unless the direxpand option is set and we are
- going to replace the directory name with the corrected one in the
- readline line. Suggested by Linda Walsh <bash@tlinx.org>
-
-lib/sh/shquote.c
- - sh_backslash_quote: now takes a third argument: flags. If non-zero,
- tildes are not backslash-escaped. Have to handle both printf %q,
- where they should be escaped, and filename completion, where they
- should not when used as usernames
-
-externs.h
- - sh_backslash_quote: declaration now takes a third argument
-
-builtins/printf.def
- - printf_builtin: call sh_backslash_quote with 1 as third argument
- so tildes get escaped
-
-{bashline,bracecomp}.c
- - call sh_backslash_quote with 0 as third argument so tildes are not
- escaped in completed words
-
-doc/bash.1
- - add `coproc' to the list of reserved words. From a report by
- Jens Schweikhardt <schweikh@schweikhardt.net>
-
- 6/10
- ----
-execute_cmd.c
- - line_number_for_err_trap: now global, so parse_and_execute can save
- and restore it with unwind-protect
-
-builtins/evalstring.c
- - parse_prologue: save and restore line_number_for_err_trap along
- with line_number
- - restore_lastcom: new function, unwind-protect to restore
- the_printed_command_except_trap
- - parse_prologue: use restore_lastcom to save and restore the value
- of the_printed_command_except_trap around calls to parse_and_execute
- (eval/source/.)
-
- 6/15
- ----
-lib/readline/complete.c
- - complete_fncmp: change filename comparison code to understand
- multibyte characters, even when doing case-sensitive or case-mapping
- comparisons. Fixes problem reported by Nikolay Shirokovskiy
- <nshyrokovskiy@gmail.com>
-
- 6/20
- ----
-builtins/mapfile.def
- - mapfile: move the line count increment and check for having read
- the specified number of lines to the end of the loop to avoid
- reading an additional line with zgetline. Fixes bug reported by
- Dan Douglas <ormaaj@gmail.com>
-
- 6/21
- ----
-
-execute_cmd.c
- - execute_pipeline: make sure `lastpipe_flag' is initialized to 0 on
- all systems, since it's tested later in the function. Fixes bug
- reported by John E. Malmberg <wb8tyw@qsl.net>
-
- 6/22
- ----
-mailcheck.c
- - file_mod_date_changed: return 0 right away if mailstat() does not
- return success. Fixes bug with using uninitialized values reported
- by szymon.kalasz@uj.edu.pl
-
-builtins/set.def
- - the `monitor' option is not available when the shell is compiled
- without job control, since the underlying `m' flag is not available
-
-nojobs.c
- - job_control: now declared as int variable, initialized to 0, never
- modified
-
-jobs.h
- - job_control: extern declaration no longer dependent on JOB_CONTROL
-
-execute_cmd.c
- - execute_pipeline: made necessary changes so `lastpipe' shell option
- is now available in all shells, even those compiled without
- JOB_CONTROL defined
-
- 6/23
- ----
-lib/glob/glob.c
- - glob_filename: check for interrupts before returning if glob_vector
- returns NULL or an error. Bug reported by Serge van den Boom
- <svdb@stack.nl>, fix from Andreas Schwab <schwab@linux-m68k.org>
- - call run_pending_traps after each call to QUIT or test of
- interrupt_state, like we do in mainline shell code
- - glob_vector: don't call QUIT; in `if (lose)' code block; just free
- memory, return NULL, and let callers deal with interrupt_state or
- other signals and traps
-
- 6/25
- ----
-lib/readline/input.c
- - rl_read_key: restructure the loop that calls the event hook a little,
- so that the hook is called only after rl_gather_tyi returns no input,
- and any pending input is returned first. This results in better
- efficiency for processing pending input without calling the hook
- on every input character as bash-4.1 did. From a report from
- Max Horn <max@quendi.de>
-
- 6/26
- ----
-trap.c
- - signal_is_pending: return TRUE if SIG argument has been received and
- a trap is waiting to execute
-
-trap.h
- - signal_is_pending: extern declaration
-
-lib/glob/glob.c
- - glob_vector: check for pending SIGINT trap each time through the loop,
- just like we check for interrupt_state or terminating_signal, and
- set `lose = 1' so we clean up after ourselves and interrupt the
- operation before running the trap. This may require a change later,
- maybe call run_pending_traps and do that if run_pending_traps returns?
-
-variables.c
- - sv_histtimefmt: set history_comment_character to default (`#') if
- it's 0 when we're turning on history timestamps. The history code
- uses the history comment character to prefix timestamps, and
- leaving it at 0 effectively removes them from the history. From a
- report to help-bash by Dennis Williamson <dennistwilliamson@gmail.com>
-
- 6/27
- ----
-lib/readline/signals.c
- - rl_maybe_restore_sighandler: new function, sets handler for SIG to
- HANDLER->sa_handler only if it's not SIG_IGN. Needs to be called
- on same signals set using rl_maybe_set_sighandler, which does not
- override an existing SIG_IGN handler (SIGALRM is ok since it does
- the check inline; doesn't mess with SIGWINCH)
-
- 6/30
- ----
-variables.h
- - additional defines for the new `nameref' variable attribute
- (att_nameref): nameref_p, nameref_cell, var_setref
-
-variables.c
- - find_variable_nameref: resolve SHELL_VAR V through chain of namerefs
- - find_variable_last_nameref: resolve variable NAME until last in a
- chain of possibly more than one nameref starting at shell_variables
- - find_global_variable_last_nameref: resolve variable NAME until last
- in a chain of possibly more than one nameref starting at
- global_variables
- - find_nameref_at_context: resolve SHELL_VAR V through chain of namerefs
- in a specific variable context (usually a local variable hash table)
- - find_variable_nameref_context: resolve SHELL_VAR V through chain of
- namerefs following a chain of varible contexts
- - find_variable_last_nameref_context: resolve SHELL_VAR V as in
- find_variable_last_context, but return the final nameref instead of
- what the final nameref resolves to
- - find_variable_tempenv, find_variable_notempenv, find_global_variable,
- find_shell_variable, find_variable: modified to follow namerefs
- - find_global_variable_noref: look up a global variable without following
- any namerefs
- - find_variable_noref: look up a shell variable without following any
- namerefs
- - bind_variable_internal: modify to follow a chain of namerefs in the
- global variables table; change to handle assignments to a nameref by
- following nameref chain
- - bind_variable: modify to follow chain of namerefs when binding to a
- local variable
- - unbind_variable: changes to unset nameref variables (unsets both
- nameref and variable it resolves to)
-
-subst.c
- - parameter_brace_expand_word: change to handle expanding nameref whose
- value is x[n]
- - parameter_brace_expand_indir: change to expand in ksh93-compatible
- way if variable to be indirected is nameref and a simple (non-array)
- expansion
- - param_expand: change to expand $foo where foo is a nameref whose value
- is x[n]
-
-execute_cmd.c
- - execute_for_command: changes to implement ksh93 semantics when index
- variable is a nameref
-
-builtins/setattr.def
- - show_var_attributes: change to add `n' to flags list if att_nameref
- is set
-
-builtins/set.def
- - unset_builtin: changes to error messages to follow nameref variables
-
-builtins/declare.def
- - document new -n option
- - declare_internal: new `-n' and `+n' options
- - declare_internal: handle declare -n var[=value] and
- declare +n var[=value] for existing and non-existant variables.
- Enforce restriction that nameref variables cannot be arrays.
- Implement semi-peculiar ksh93 semantics for typeset +n ref=value
-
- 7/5
- ---
-variables.c
- - unbind_variable: unset whatever a nameref resolves to, leaving the
- nameref variable itself alone
- - unbind_nameref: new function, unsets a nameref variable, not the
- variable it references
-
-variables.h
- - unbind_nameref: extern declaration
-
-builtins/set.def
- - unset_builtin: modify to add -n option, which calls unbind_nameref
- leaving unbind_variable for the usual case. This required slight
- changes and additions to the test suite
-
-doc/{bash.1,bashref.texi}
- - document namerefs and typeset/declare/local/unset -n
-
- 7/13
- ----
-lib/sh/casemod.c
- - include shmbchar.h for is_basic and supporting pieces
- - sh_casemod: use _to_wupper and _to_wlower to convert wide character
- case instead of TOUPPER and TOLOWER. Fixes bug reported by
- Dennis Williamson <dennistwilliamson@gmail.com>, fix from
- Andreas Schwab <schwab@linux-m68k.org>
- - cval: short-circuit and return ascii value if is_basic tests true
- - sh_casemod: short-circuit and use non-multibyte case modification
- and toggling code if is_basic tests true
-
-lib/readline/signals.c
- - _rl_{block,release}_sigint: remove the code that actually blocks and
- releases the signals, since we defer signal handling until calls to
- RL_CHECK_SIGNALS()
-
-lib/readline/{callback,readline,util}.c
- - if HAVE_POSIX_SIGSETJMP is defined, use sigsetjmp/siglongjmp without
- saving and restoring the signal mask instead of setjmp/longjmp
-
-lib/readline/rltty.c
- - prepare_terminal_settings: don't mess with IXOFF setting if
- USE_XON_XOFF defined
-
-doc/{bash.1,bashref.texi}
- - add some text to the description of set -e clarifying its effect
- on shell functions and shell function execution. Suggested by
- Rainer Blome <rainer.blome@gmx.de>
-
-bashline.c
- - edit_and_execute_command: increment current_command_line_count before
- adding partial line to command history (for command-oriented-history
- because of rl_newline at beginning of function), then reset it to 0
- before adding the dummy history entry to make sure the dummy entry
- doesn't get added to previous incomplete command. Partial fix for
- problem reported by Peng Yu <pengyu.ut@gmail.com>
-
- 7/24
- ----
-configure.in
- - interix: define RECYCLES_PIDS. Based on a report from Michael
- Haubenwallner <michael.haubenwallner@salomon.at>
-
- 7/26
- ----
-jobs.c
- - make_child: call bgp_delete on the newly-created pid unconditionally.
- Some systems reuse pids before cycling through an entire set of
- CHILD_MAX/_SC_CHILD_MAX unique pids. This is no longer dependent
- on RECYCLES_PIDS. Based on a report from Michael Haubenwallner
- <michael.haubenwallner@salomon.at>
-
-support/shobj-conf
- - Mac OS X: drop MACOSX_DEPLOYMENT_TARGET=10.3 from the LDFLAGS. We
- can finally kill Panther
-
- 7/28
- ----
-subst.c
- - command_substitute: make sure last_made_pid gets reset if make_child
- fails
-
-execute_cmd.c
- - execute_command_internal: case cm_simple: decide whether or not to
- wait_for a child if already_making_children is non-zero, indicates
- that there is an unwaited-for child. More of fix for bug report
- from Michael Haubenwallner <michael.haubenwallner@salomon.at>
-
-jobs.c
- - make_child: call delete_old_job (new_pid) unconditionally, don't
- bother to check whether or not pid wrap occurred. Rest of fix for
- bug report from Michael Haubenwallner
- <michael.haubenwallner@salomon.at>
-
- 7/29
- ----
-shell.c
- - subshell_exit: new function, exits the shell (via call to sh_exit())
- after calling any defined exit trap
-
-externs.h
- - subshell_exit: new extern declaration
-
-execute_cmd.c
- - execute_command_internal: make sure to call subshell_exit for
- {} group commands executed asynchronously (&). Part of fix for
- EXIT trap bug reported by Maarten Billemont <lhunath@lyndir.com>
-
-sig.c
- - reset_terminating_signals: make sure to set termsigs_initialized back
- to 0, so a subsequent call to initialize_terminating_signals works
- right. Rest of fix for bug reported by Maarten Billemont
- <lhunath@lyndir.com>
-
-{execute_cmd,general,jobs,mailcheck,mksyntax,test}.c
-builtins/{cd,fc,pushd,ulimit}.def
-lib/malloc/getpagesize.h
-lib/sh/{clktck,fpurge,inet_aton,mailstat,oslib,pathcanon,pathphys,spell,strerror}.c
- - make inclusion of <sys/param.h> dependent on HAVE_SYS_PARAM_H
- consistently
-
- 8/6
- ---
-lib/readline/histexpand.c
- - history_expand_internal: now takes an additional argument saying
- whether the history expansion occurs within a quoted string, set to
- the open quote character
- - history_expand_internal: use new argument instead of checking prev
- char and initializing quoted_search_delimiter, pass qc directly to
- get_history_event, where it allows a matching quote to terminate a
- string defining an event
- - history_expand: change single-quote handling code so that if
- history_quotes_inhibit_expansion is 0, single quotes are treated
- like double quotes
- - history_expand: change call to history_expand_internal to pass new
- argument of `"' if double-quoted string, `'' if single-quoted string;
- this lets history_expand decide what is a quoted string and what
- is not
-
- 8/7
- ---
-configure.in
- - AC_CANONICAL_BUILD: invoke for later use
-
-lib/readline/macro.c
- - _rl_prev_macro_key: new function, inverse of _rl_next_macro_key:
- backs up the index into the current macro by 1
-
-lib/readline/rlprivate.h
- - _rl_prev_macro_key: extern declaration
-
-
-lib/readline/readline.c
- - _rl_dispatch_subseq, _rl_subseq_result: don't call _rl_unget_char
- if we're currently reading from a macro; call _rl_prev_macro_key
- instead. Fixes bug reported by Clark Wang <clark.wang@oracle.com>
-
- 8/13
- ----
-builtins/evalstring.c
- - evalstring(): new function, wrapper around parse_and_execute.
- make sure we handle cases where parse_and_execute can call `return'
- and short-circuit without cleaning up properly. We call
- parse_and_execute_cleanup() then jump to the previous-saved return
- location
-
-builtins/common.h
- - extern declaration for evalstring()
-
-builtins/eval.def
- - eval_builtin: make sure we handle `eval " ... return"' in contexts
- where `return' is valid by calling evalstring(). Fixes bug with
- `eval return' in sourced files reported by Clark Wang
- <dearvoid@gmail.com>
-
-trap.c
- - run_pending_traps: call evalstring instead of parse_and_execute.
- XXX - still needs to handle saving and restoring token state in the
- presence of `return'; could use unwind_protects for that
-
-builtins/mapfile.def
- - run_callback: call evalstring instead of parse_and_execute
-
- 8/15
- ----
-bashline.c
- - bash_filename_stat_hook: make sure we don't free local_dirname
- before using it to canonicalize any expanded filename. Make sure
- it always points to *dirname and only free it if we're replacing
- it.
-
-lib/readline/complete.c
- - append_to_match: make sure we call rl_filename_stat_hook with
- newly-allocated memory to avoid problems with freeing it twice
-
- 8/17
- ----
-variables.c,config-top.h
- - if ARRAY_EXPORT is defined to 1 when variables.c is compiled, the
- code that allows indexed arrays to be exported is enabled and
- included
-
- 8/19
- ----
-shell.c
- - call start_debugger from main() only if dollar_vars[1] != 0 (close
- enough to a non-interactive shell, since we can be interactive with
- -i while running a shell script). Fixes oddity reported by
- Techlive Zheng <techlivezheng@gmail.com>
-
- 8/20
- ----
-arrayfunc.c
- - quote_array_assignment_chars: don't bother quoting if the word has
- not been marked as an assignment (W_ASSIGNMENT)
- - quote_array_assignment_chars: turn on W_NOGLOB in the word flags
- so assignment statements don't undergo globbing. Partial fix for
- problems reported by Dan Douglas <ormaaj@gmail.com>
-
- 8/21
- ----
-command.h
- - W_NOBRACE: new word flag that means to inhibit brace expansion
-
-subst.c
- - brace_expand_word_list: suppress brace expansion for words with
- W_NOBRACE flag
-
- 8/22
- ----
-builtins/read.def
- - read_builtin: don't call dequote_string on what we've read, even if
- we saw an escape character, unless (input_string && *input_string).
- We may have escaped an IFS whitespace character. Fixes seg fault
- reported by <armandsl@gmail.com>
-
-execute_cmd.c
- - execute_command_internal: set the_printed_command_except trap when
- about to execute a ( ... ) user subshell. For now, set it only if
- ERR is trapped; can relax that later. Fixes bug reported by
- Mike Frysinger <vapier@gentoo.org>
-
- 8/23
- ----
-jobs.c
- - remove references to first_pid and pid_wrap, since we're not using
- them for anything anymore
-
- 8/24
- ----
-subst.c
- - changes for W_NOBRACE everywhere appropriate: so it can be displayed
- for debugging, and passed out of expand_word_internal
-
-doc/{bash.1,bashref.texi}
- - small changes to make it clearer that the = and == operators are
- equivalent, and will cause pattern matching when used with [[.
- From a question from Michal Soltys <soltys@ziu.info>
-
-doc/bashref.texi
- - some small formatting changes from Karl Berry <karl@freefriends.org>
-
- 8/27
- ----
-lib/readline/doc/{history,rlman,rluserman}.texi
- - some small formatting changes from Karl Berry <karl@freefriends.org>
-
-arrayfunc.c
- - assign_array_element_internal, assign_compound_array_list,
- unbind_array_element, array_value_internal: changes to make
- assignment statements to negative indices (a[-1]=2) and unsetting
- array elements using negative indices (unset 'a[-1]') work.
- From suggestions by Dennis Williamson <dennistwilliamson@gmail.com>
- and Chris F. A. Johnson <chris@cfajohnson.com>
-
-subst.c
- - array_length_reference: changes to make length references to array
- elements using negative indices (${#a[-1]}) work
-
- 8/28
- ----
-doc/{bash.1,bashref.texi}
- - document new treatment of negative indices to indexed arrays when
- assigning, referencing, calculating length, and unsetting
-
- 8/29
- ----
-shell.c
- - show_shell_usage: add -l to list of shell invocation options (short
- for --login). From Red Hat bug 852469
-
-configure.ac
- - renamed from configure.in, as latest autoconf versions want. Patches
- Stefano Lattarini <stefano.lattarini@gmail.com>
-
-MANIFEST,Makefile.in,doc/bashref.texi,support/mkconffiles
- - configure.in -> configure.ac
-
- 9/1
- ---
-
-parse.y
- - read_token_word: allow words like {array[ind]} to be valid redirection
- words for constructs like {x}<file
-
-redir.c
- - redir_varassign: bind_var_to_int already handles array assignments,
- so don't need to do anything more for things like {a[i]}<file
- - redir_varvalue: changes to allow references to {a[i]} when
- performing redirections using valid_array_reference and
- get_array_value. Adds functionality requested most recently by
- <unknown@vmw-les.eng.vmware.com>
-
-lib/readline/display.c
- - update_line: if the first difference between the old and new lines
- is completely before any invisible characters in the prompt, we
- should not adjust _rl_last_c_pos, since it's before any invisible
- characters. Fixed in two places
- - prompt_modechar: return a character indicating the editing mode:
- emacs (@), vi command (:), or vi insert (+)
- - _rl_reset_prompt: new function, just calls rl_expand_prompt. Will be
- inlined, placeholder for more changes
- - expand_prompt: if show-mode-in-prompt is enabled, add a character to
- the front of the prompt indicating the editing mode, adjusting the
- various variables as appropriate to keep track of the number of
- visible characters and number of screen positions
-
-lib/readline/bind.c
- - show-mode-in-prompt: new bindable boolean variable, shadowed by
- _rl_show_mode_in_prompt variable
- - hack_special_boolean_var: call _rl_reset_prompt when toggling or
- setting show-mode-in-prompt
-
-lib/readline/readline.c
- - readline_internal_setup: make sure the correct vi mode keymap is set
- before expanding the prompt string for the first time
-
-lib/readline/misc.c
- - rl_emacs_editing_mode: make sure to call _rl_reset_prompt if we're
- showing the editing mode in the prompt
-
-lib/readline/rlprivate.h
- - _rl_reset_prompt, _rl_show_mode_in_prompt: extern declarations
-
-lib/readline/vi_mode.c
- - rl_vi_insertion_mode: call _rl_reset_prompt
- - rl_vi_movement_mode: call _rl_reset_prompt. Finishes changes for
- showing mode in prompt string, originally requested by Miroslav
- Koskar <mkoskar@gmail.com> and most recently by Jordan Michael
- Ziegler <jziegler@bnl.gov>
-
-doc/bash.1,lib/readline/doc/{readline.3,rluser.texi}
- - document new show-mode-in-prompt variable, off by default
-
- 9/3
- ---
-
-jobs.c
- - set_childmax: new function, external mechanism for other parts of
- the shell to set js.c_childmax, the number of saved exited child
- statuses to remember
-jobs.h
- - set_childmax: extern declaration
-
-variables.c
- - CHILD_MAX: new special variable, with sv_childmax function to
- run when it changes. Setting CHILD_MAX to a value greater than
- zero but less than some maximum (currently 8192) sets the number of
- exited child statuses to remember. set_childmax (jobs.c) ensures
- that the number does not drop below the posix-mandated minimum
- (CHILD_MAX)
-
-doc/{bash.1,bashref.texi}
- - CHILD_MAX: document new meaning and action when variable is set
-
- 9/5
- ---
-redir.c
- - redir_varassign: call stupidly_hack_special_variables after
- assigning fd number to specified variable, so we can use constructs
- like {BASH_XTRACEFD}>foo. Suggested by Pierre Gaston
- <pierre.gaston@gmail.com>
-
- 9/8
- ---
-expr.c
- - readtok: invalidate previous contents of `curlval' before freeing
- and reallocating tokstr (which, chances are, will get the same
- pointer as before and render curlval inconsistent). Fixes other
- bug reported by Dan Douglas <ormaaj@gmail.com>
-
- 9/9
- ---
-lib/readline/complete.c
- - rl_username_completion_function: protect call to setpwent() with
- #ifdef (HAVE_GETPWENT)/#endif. Fixes bug reported by
- Gerd Hofmann <gerd.hofmann.nbg@googlemail.com>
-
-lib/readline/display.c
- - rl_message: second and subsequent calls to rl_message can result in
- local_prompt being overwritten with new values (e.g., from the
- successive calls displaying the incremental search string). Need
- to free before overwriting if it's not the same as the value saved
- in saved_local_prompt. Fixes memory leak reported by
- Wouter Vermaelen <vermaelen.wouter@gmail.com>
-
-lib/readline/{terminal.c,rlprivate.h}
- - move CUSTOM_REDISPLAY_FUNC and CUSTOM_INPUT_FUNC defines from
- terminal.c to rlprivate.h so other files can use them
-
-expr.c
- - expr_streval: if noeval is non-zero, just return 0 right away,
- short-circuiting evaluation completely. readtok will leave curtok
- set correctly without re-entering the evaluator at all. Rest of
- fix for bug reported by Dan Douglas <ormaaj@gmail.com>
-
- 9/11
- ----
-
-parse.y
- - parse_comsub: make sure the `reserved word ok in this context' flag
- is preserved after we read `do' followed by whitespace. Fixes bug
- reported by Benoit Vaugon <benoit.vaugon@gmail.com>
-
- 9/13
- ----
-configure.ac,config.h.in
- - enable-direxpand-default: new configure option, turns the `direxpand'
- shell option on by default
-
-bashline.c
- - dircomplete_expand, dircomplete_expand_relpath: initialize to 1 if
- DIRCOMPLETE_EXPAND_DEFAULT is defined and non-zero
-
-doc/bashref.texi
- - enable-direxpand-default: document new configure option
-
- 9/14
- ----
-shell.c
- - --protected: make option valid only when wordexp is compiled into
- the shell. Fix from Roman Rakus <rrakus@redhat.com>
-
-configure.ac
- - HP NonStop (*-nsk*): compile --without-bash-malloc. Change from
- Joachim Schmitz <jojo@schmitz-digital.de>
-
- 9/16
- ----
-subst.c,execute_cmd.c,lib/glob/sm_loop.c,lib/sh/shquote.c
- - minor code cleanups from Joachim Schmitz <jojo@schmitz-digital.de>
-
-lib/readline/colors.h
- - workaround for HP NonStop compiler issue with <stdbool.h> from
- Joachim Schmitz <jojo@schmitz-digital.de>
-
- 9/17
- ----
-builtins/printf.def
- - printf_builtin: handle localtime returning NULL, as can happen when
- encountering overflow. Bug report and initial fix from
- Eduardo A. Bustamante López <dualbus@gmail.com>
-
-doc/{bash.1,bashref.texi}
- - emphasize that brace expansion using character ranges ({a..c}) acts
- as if the C locale were in use. Prompted by message from
- Marcel Giannelia <info@skeena.net>
-
- 9/20
- ----
-lib/sh/wcsnwidth.c
- - wcsnwidth: new function, variant of wcwidth, returns the number of
- wide characters from a string that will be displayed to not exceed
- a specified max column position
-
- 9/21
- ----
-builtins/help.def
- - show_builtin_command_help: break code that displays the short-doc
- for each builtin in two columns into a new function: dispcolumn
- - wdispcolumn: multibyte-char version of dispcolumn; uses wide
- chars and printf "%ls" format. Fixes problem reported by
- Nguyá»n Thái Ngá»c Duy <pclouds@gmail.com>
-
- 9/22
- ----
-execute_cmd.c
- - execute_disk_command: before running the command-not-found hook,
- call kill_current_pipeline() to make sure we don't add processes
- to an existing pipeline or wait for processes erroneously
-
- 9/23
- ----
-lib/readline/input.c
- - rl_input_available_hook: new hook function, called from
- _rl_input_available (or _rl_input_queued) to return whether or not
- input is available wherever the input source is
-
-lib/readline/doc/rltech.texi
- - rl_input_available_hook: document
-
- 9/27
- ----
-lib/glob/sm_loop.c:
- - GMATCH: after one or more `*', an instance of ?(x) can match zero or
- 1 times (unlike ?, which has to match one character). The old code
- failed if it didn't match at least once. Fixes `a*?(x)' bug.
- - GMATCH: if we hit the end of the search string, but not the end of
- the pattern, and the rest of the pattern is something that can
- match the NUL at the end of the search string, we should successfully
- match. Fixes `a*!(x)' bug reported by <hans1worst@gmail.com>
-
- 10/2
- ----
-command.h
- - add c_lock member to coproc structure for future use to tell who is
- manipulating it
-
-execute_cmd.c
- - execute_coproc: block SIGCHLD while parent is forking coproc
- process and adding pid to sh_coproc struct to avoid race condition
- where child is reaped before the pid is assigned and the coproc is
- never marked as having died. Fixes race condition identified by
- Davide Baldini <baldiniebaldini@gmail.com>
- - add assignments to c_lock member of struct coproc in various
- functions that manipulate it; was used to identify race condition
- - coproc_pidchk: don't call coproc_dispose to avoid using malloc and
- other functions in a signal handler context
- - coproc_dispose: call BLOCK_SIGNAL/UNBLOCK_SIGNAL for SIGCHLD while
- manipulating the sh_coproc struct
-
- 10/6
- ----
-lib/readline/complete.c
- - rl_display_match_list: if printing completions horizontally, don't
- bother with spacing calculations if limit == 1, which means we are
- printing one completion per line no matter what. Fixes bug
- reported by David Kaasen <kaasen@nvg.ntnu.no>
-
- 10/7
- ----
-builtins/declare.def
- - declare_internal: add error checking for nameref attribute and
- variable assignments: self-references, attempts to make an array
- variable a nameref
-
-subst.c
- - parameter_brace_expand: handle parameter_brace_expand_word returning
- &expand_param_fatal or &expand_param_error and return the appropriate
- error value
- - parameter_brace_expand_word: if a nameref variable's value is not a
- valid identifier, return an error
- - param_expand: if a nameref variable's value is not a valid identifier,
- return an error
-
-test.c
- - unary_operator: add new -R variable, returns true if variable is set
- and has the nameref attribute. From ksh93
-
-builtins/test.def
- - add -R to description of conditional commands for help test
-
-doc/{bash.1,bashref.texi}
- - document new -R unary conditional operator
-
- 10/13
- -----
-trap.c
- - check_signals_and_traps: new function, convenience function for the
- rest of the shell to check for pending terminating and interrupt
- signals, and to check for and process any pending traps
- - any_signals_trapped: new function, returns non-zero if any signals
- are trapped and -1 if not
-
-trap.h
- - extern declaration for check_signals_and_traps
-
-bashline.c
- - bashline_reset: make sure we reset the event hook
- - bash_event_hook: call check_signals_and_traps instead of just
- checking for terminating signals so we can run pending traps and
- react to interrupts, and reset the event hook when we're done
-
-
- 10/14
- -----
-trap.c
- - trap_handler: if executing in a readline signal handler context,
- call bashline_set_event_hook to install bash_event_hook to process
- the signal (if bash cares about it)
-
-sig.c
- - sigint_sighandler: call bashline_set_event_hook to set the event
- hook if we're executing in a readline signal handler context
-
-lib/readline/input.c
- - rl_getc: call RL_CHECK_SIGNALS if read returns -1/EINTR and the caught
- signal is SIGINT or SIGQUIT rather than waiting until the next time
- around the loop
- - rl_getc: call rl_event_hook after calling RL_CHECK_SIGNALS to allow
- an application signal handler to set the event hook in its own
- signal handler (e.g., like bash trap_handler or sigint_sighandler)
-
-
-parse.y
- - yy_readline_get: don't set interrupt_immediately before we call
- readline(). Inspired by report from lanshun zhou
- <zls.sogou@gmail.com>
-
-input.c
- - getc_with_restart: add call to run_pending_traps after call to
- CHECK_TERMSIG
-
-lib/sh/zread.c
- - zread: call check_signals_and_traps if read() returns -1/EINTR
- instead of just ignoring the EINTR and deferring handling any
- signal that generated it
-
-builtins/mapfile.def
- - mapfile: don't set interrupt_immediately before calling zgetline()
- (which uses zread internally)
-
-builtins/read.def
- - read_builtin: don't set interrupt_immediately before calling zread
- (moved code around so that it was only being set right around calls
- to zread to avoid signal handler conflicts). Inspired by report
- from lanshun zhou <zls.sogou@gmail.com>
- - edit_line: don't set interrupt_immediately around call to readline()
- - include shmbutil.h
- - read_builtin: don't call read_mbchar unless is_basic(c) returns
- false for the character we just read
-
- 10/15
- -----
-sig.c
- - throw_to_top_level: if interrupt_state is non-zero, make sure that
- last_command_exit_value reflects 128+SIGINT if it's not already
- greater than 128
-
- 10/20
- -----
-builtins/wait.def
- - WAIT_RETURN: set wait_signal_received back to 0 for the potential
- next call to wait
-
-quit.h
- - CHECK_WAIT_INTR: macro to check whether trap_handler handled a
- signal and set wait_signal_received; longjmp to wait_intr_buf in
- that case
-
-jobs.c
- - wait_for, waitchld: call CHECK_WAIT_INTR at the same places we call
- CHECK_TERMSIG to check for terminating signals
- - wait_sigint_handler: don't longjmp out of the wait builtin unless
- interrupt_immediately is set; otherwise just SIGRETURN from the
- handler
- - wait_sigint_handler: if interrupt_immediately not set, but we are
- executing in the wait builtin and SIGINT is not trapped, treat it
- as a `normally received' SIGINT: restore the signal handler and
- send SIGINT to ourselves
- - waitchld: when in posix mode and running SIGCHLD traps, don't longjmp
- to wait_intr_buf (and let wait be interrupted) if we're running from
- a signal handler. Wait for CHECK_WAIT_INTR to do the longjmp.
- run_pending_traps will run the SIGCHLD trap later
-
-nojobs.c
- - reap_zombie_children, wait_for_single_pid, wait_for: call
- CHECK_WAIT_INTR where we call CHECK_TERMSIG
- - wait_sigint_handler: don't longjmp out of the wait builtin unless
- interrupt_immediately is set; otherwise just SIGRETURN from the
- handler
-
-trap.c
- - trap_handler: make sure wait_signal_received is set if the wait
- builtin is executing, and only longjmp if interrupt_immediately is
- set. This whole set of fixes was prompted by report from
- lanshun zhou <zls.sogou@gmail.com>
-
- 10/24
- -----
-lib/glob/glob.c
- - glob_filename: only check directory_name for globbing chars if
- it's of non-zero length
-
-lib/sh/strchrnul.c
- - new simpler implementation
-
-subst.c
- - command_substitute: call set_shellopts after turning off errexit
- in subshells so it's reflected in $SHELLOPTS
-
- 11/7
- ----
-builtins/evalstring.c
- - parse_and_execute: treat ERREXIT case like reader_loop does: set
- variable_context to 0 before longjmping back to top_level. Don't
- run the unwind-protect context to avoid side effects from popping
- function contexts. Part of fix for problem reported by Nikolai
- Kondrashov <nikolai.kondrashov@redhat.com>
-
-execute_cmd.c
- - execute_simple_command: call unlink_fifo_list only if this is the
- last element of a pipeline (or not in a pipeline), rather than for
- every child. Fixes difference in behavior between /dev/fd and
- FIFOs reported by Zev Weiss <zev@bewilderbeest.net>
- - execute_null_command: do the same thing in the parent branch after
- make_child
-
- 11/14
- -----
-subst.c
- - parameter_brace_expand: a variable is null if it's special ($@, $*),
- the expansion occurs within double quotes, and the expansion turns
- into a quoted null. Fixes debian bug 692447 reported by
- Matrosov Dmitriy <sgf.dma@gmail.com>
-
-jobs.c
- - run_sigchld_trap: make sure `running_trap' sentinel is set
- appropriately
- - waitchld: only run the sigchld trap if we're not in a signal
- handler, not running a trap, and executing the wait builtin.
- Otherwise, queue for later handling. We still run one instance
- of the trap handler per exited child. Bulk of fix for bug
- reported by Elliott Forney <idfah@cs.colostate.edu>
-
-trap.c
- - queue_sigchld_trap: set catch_flag so run_pending_traps notices,
- and set trapped_signal_received for completeness. Rest of fix
- for bug reported by Elliott Forney <idfah@cs.colostate.edu>
-
-lib/malloc/malloc.c
- - block_signals: renamed to _malloc_block_signals, made public
- - unblock_signals: renamed to _malloc_unblock_signals, made public
-
-lib/malloc/imalloc.h
- - extern declarations for _malloc_{un,}block_signals
-
-lib/malloc/table.c
- - mregister_alloc, mregister_free: block signals around table
- manipulation
-
- 11/15
- -----
-trap.c
- - run_pending_traps: set SIG_INPROGRESS flag around calls to
- run_sigchld_handler so other parts of the shell know that the
- SIGCHLD trap handler is executing
- - run_pending_traps: if we get a situation where we are looking at
- running a SIGCHLD trap but the trap string is IMPOSSIBLE_TRAP_HANDLER
- and the SIG_INPROGRESS flag is set, just skip it. This is possible
- if run_pending_traps is called from a SIGCHLD trap handler run by
- run_sigchld_trap
-
-doc/bash.1,lib/readline/doc/{rluser.texi,readline.3}
- - corrected description of the effect of `set history-size 0'. Report
- from Vesa-Matti J Kari <vmkari@cc.helsinki.fi>
-
-include/stdc.h
- - CPP_STRING: new define, replaces __STRING
-
-lib/malloc/{malloc.c,imalloc.h}
- - replace __STRING with CPP_STRING
-
- 11/16
- -----
-lib/readline/bind.c
- - sv_histsize: if argument evaluates to a value < 0, unstifle the
- history
-
- 11/22
- -----
-redir.c
- - do_redirection_internal: if we have REDIR_VARASSIGN set in the
- redirection flags and we set up `redirector' using fcntl or dup2,
- don't add a redirect to make sure it stays open. Let the
- script programmer manage the file handle. Fixes bug reported by
- Sam Liddicott <sam@liddicott.com>
-
- 11/24
- -----
-jobs.c
- - wait_for_any_job: new function, waits for an unspecified background
- job to exit and returns its exit status. Returns -1 on no background
- jobs or no children or other errors. Calls wait_for with new
- sentinel value ANY_PID
- - wait_for: changes to handle argument of ANY_PID: don't look up or
- try to modify the child struct, only go through the wait loop once.
- Return -1 if waitpid returns no children
-
-jobs.h
- - ANY_PID: new define
-
-builtins/wait.def
- - new option: -n. Means to wait for the next job and return its exit
- status. Returns 127 if there are no background jobs (or no
- children). Feature most recently requested by Elliott Forney
- <idfah@cs.colostate.edu>
-
-doc/{bash.1,bashref.texi}
- - document new `wait -n' option
-
-execute_cmd.c
- - execute_command_internal: save make_command_string () result in a
- temp variable before calling savestring() on it; avoids evaluating
- make_command_string() result twice. Fix from John E. Malmberg
- <wb8tyw@qsl.net>
-
- 11/28
- -----
-
-builtins/declare.def
- - declare_internal: if an array variable is declared using `declare -a'
- or `declare -A', but not assigned a value, set the `invisible'
- attribute so the variable does not show up as set. Fix for bug
- about variable initialization reported by Tim Friske <me@timfriske.com>
-
-builtins/{mapfile,read}.def
- - after calling find_or_make_array_variable, make sure the invisible
- flag is turned off, in case the variable was declared previously
- using `declare -a' or `declare -A'. Side effect of above change to
- declare_internal
-
-subst.c
- - shell_expand_word_list: handle the W_ASSNGLOBAL flag and put -g into
- the list of options passed to make_internal_declare as appropriate.
- Fix for bug reported by Tim Friske <me@timfriske.com>
-
- 11/30
- -----
-test.c
- - unary_op: make sure -v and -n check that the variable is not marked
- as invisible before calling var_isset. Fix for bug reported by Tim
- Friske <me@timfriske.com>
-
- 12/2
- ----
-subst.c
- - process_substitute: turn off the `expanding_redir' flag, which
- controls whether or not variables.c:find_variable_internal uses the
- temporary environment to find variables. We want to use the
- temp environment, since we don't have to worry about order of
- evaluation in a subshell. Fixes bug reported by Andrey Borzenkov
- <arvidjaar@gmail.com>
-
- 12/4
- ----
-lib/glob/glob.c
- - glob_filename: changes to avoid null filenames and multiple entries
- returned for patterns like **/** (globstar enabled). Fixes bug
- reported by Ulf Magnusson <ulfalizer@gmail.com>
-
- 12/10
- -----
-lib/glob/glob.c
- - glob_filename: finish up a series of changes to make globstar-style
- globbing more efficient, avoid more duplicate filenames, and be more
- compatible with other shells that implement it
- o collapse a sequence of **/**/** to one **
- o note when the directory name is all ** or ends in ** so we
- can treat it specially when the filename is **
- All inspired by report from Andrey Borzenkov <arvidjaar@gmail.com>
-
-lib/sh/zread.c
- - zreadn: new function, like zread, but takes an additional argument
- saying how many bytes to read into the local buffer. Can be used to
- implement `read -N' without so many one-byte calls to zreadc. Code
- from Mike Frysinger <vapier@gentoo.org>
-
- 12/12
- -----
-lib/glob/sm_loop.c
- - PATSCAN (glob_patscan): if passed string already points to end of
- pattern, return NULL immediately. Fixes problem with
- extglob_skipname reported by Raphaël Droz <raphael.droz@gmail.com>
-
- 12/13
- -----
-execute_cmd.c
- - execute_coproc: handle the command's exit status being inverted
- (an oversight). Fixes bug reported by DJ Mills
- <danielmills1@gmail.com> and Andreas Schwab <schwab@linux-m68k.org>
-
- 12/14
- -----
-lib/readline/readline.c
- - bind_arrow_keys_internal: add MINGW key bindings for Home, End,
- Delete, and Insert keys. Fix from Pierre Muller
- <pierre.muller@ics-cnrs.unistra.fr>
-
-builtins/printf.def
- - printf_builtin: '%()T' conversion: if there is no argument supplied,
- behave as if -1 had been supplied (current time). ksh93-like feature
- suggested by Clark Wang <dearvoid@gmail.com>
-
-doc/{bash.1,bashref.texi}
- - document new printf %()T default argument behavior
-
- 12/15
- -----
-lib/readline/display.c
- - displaying_prompt_first_line: new variable, indicates whether or
- not the first line of output is displaying the prompt. Always true
- in normal mode, sometimes false in horizontal scrolling mode
- - rl_redisplay: set displaying_prompt_first_line to true unless we
- are in horizontal mode; set to false in horizontal mode if the left
- margin of the displayed line is greater than the end of the prompt
- string
- - rl_redisplay: when in horizontal scroll mode, don't adjust
- _rl_last_c_pos by the wrap offset unless the line is displaying
- a prompt containing invisible chars
- - update line: don't adjust _rl_last_c_pos by the wrap offset unless
- the line is displaying a prompt containing invisible chars
- - update_line: if shrinking the line by reducing the number of
- displayed characters, but we have already moved the cursor to the
- beginning of the line where the first difference starts, don't
- try to delete characters
-
-builtins/read.def
- - unbuffered_read: set to 2 if invoked as `read -N'
- - if unbuffered_read is set to 2, compute the number of chars we
- need to read and read that many with zreadn. Posix mode still
- uses zreadintr. Code from Mike Frysinger <vapier@gentoo.org>
-
-doc/{bash.1,bashref.texi}
- - read: make it clear that if read times out, it saves any input
- read to that point into the variable arguments. Report from
- Fiedler Roman <Roman.Fiedler@ait.ac.at>
-
-subst.c
- - command_substitute: change direct assignment of exit_immediately_on_error
- to use change_flag ('e', FLAG_OFF) instead
-
-flags.c
- - use errexit_flag as the variable modified by changes to the -e
- option, reflect those changes to exit_immediately_on_error
-
-execute_cmd.c
- - execute_builtin: new global variable, builtin_ignoring_errexit, set
- to 0 by default and set to 1 if eval/source/command executing in a
- context where -e should be ignored
- - execute_builtin: set exit_immediately_on_error to errextit_flag
- after executing eval/source/command in a context where -e should
- be ignored
-
-flags.c
- - if builtin_ignoring_errexit is set, changes to errexit_flag are
- not reflected in the setting of exit_immediately_on_error. Fixes
- bug reported by Robert Schiele <rschiele@gmail.com>
-
- 12/23
- -----
-include/posixjmp.h
- - setjmp_nosigs: new define, call setjmp in such a way that it will
- not manipulate the signal mask
-
-{expr,test,trap}.c
- - setjmp_nosigs: call instead of setjmp; don't need to manipulate
- signal mask
-
-builtins/read.def
- - read_builtin: setjmp_nosigs: call instead of setjmp; don't need
- to manipulate signal mask
-
-builtins/evalstring.c:
- - parse_and_execute: setjmp_nosigs: call instead of setjmp; don't need
- to manipulate signal mask
- - parse_string: setjmp_nosigs: call instead of setjmp; don't need
- to manipulate signal mask
- - parse_and_execute: save and restore the signal mask if we get a
- longjmp that doesn't cause us to return or exit (case DISCARD)
-
- 12/24
- -----
-general.c
- - bash_tilde_expand: only set interrupt_immediately if there are no
- signals trapped; we want to jump to top level if interrupted but
- not run any trap commands
-
- 12/25
- -----
-jobs.c
- - run_sigchld_trap: no longer set interrupt_immediately before calling
- parse_and_execute, even if this is no longer run in a signal handler
- context
-
-input.c
- - getc_with_restart: add call to QUIT instead of CHECK_TERMSIG
-
-parse.y
- - yy_stream_get: now that getc_with_restart calls QUIT, don't need to
- set interrupt_immediately (already had call to run_pending_traps)
-
-execute_cmd.c
- - execute_subshell_builtin_or_function,execute_function,execute_in_subshell:
- setjmp_nosigs: call instead of setjmp when saving return_catch; don't
- need to manipulate signal mask
- - execute_subshell_builtin_or_function,execute_in_subshell:
- setjmp_nosigs: call instead of setjmp where appropriate when saving
- top_level; don't need to manipulate signal mask if we're going to
- exit right away
-
-subst.c
- - command_substitute: setjmp_nosigs: call instead of setjmp when saving
- return_catch; don't need to manipulate signal mask
- - command_substitute: setjmp_nosigs: call instead of setjmp where
- appropriate when saving top_level; don't need to manipulate signal
- mask if we're going to exit right away
-
-trap.c
- - run_exit_trap: setjmp_nosigs: call instead of setjmp when saving
- return_catch; don't need to manipulate signal mask
- - run_exit_trap: setjmp_nosigs: call instead of setjmp where
- appropriate when saving top_level; don't need to manipulate signal
- mask if we're going to exit right away
- - _run_trap_internal: setjmp_nosigs: call instead of setjmp when saving
- return_catch; don't need to manipulate signal mask
-
-builtins/evalfile.c
- - _evalfile: setjmp_nosigs: call instead of setjmp when saving
- return_catch; don't need to manipulate signal mask
-
-builtins/evalstring.c
- - evalstring: setjmp_nosigs: call instead of setjmp when saving
- return_catch; don't need to manipulate signal mask
-
-shell.c
- - main: setjmp_nosigs: call instead of setjmp where appropriate when
- saving top_level; don't need to manipulate signal mask if we're
- going to exit right away
- - run_one_command: setjmp_nosigs: call instead of setjmp where
- appropriate when saving top_level; don't need to manipulate signal
- mask if we're going to exit right away
- - run_wordexp: setjmp_nosigs: call instead of setjmp where
- appropriate when saving top_level; don't need to manipulate signal
- mask if we're going to exit right away
-
-eval.c
- - reader_loop: save and restore the signal mask if we get a longjmp
- that doesn't cause us to return or exit (case DISCARD)
-
- 12/26
- -----
-parse.y
- - shell_input_line_{index,size,len}: now of type size_t; in some cases
- the unsigned property makes a difference
- - STRING_SAVER: saved_line_{size,index} now of type size_t
- - shell_getc: don't allow shell_input_line to grow larger than SIZE_MAX;
- lines longer than that are truncated until read sees a newline;
- addresses theoretical buffer overflow described by Paul Eggert
- <eggert@cs.ucla.edu>
- - set_line_mbstate: size_t changes like shell_getc
- - shell_getc: if shell_input_line is larger than 32K, free it and
- start over to avoid large memory allocations sticking around
-
-variables.c
- - bind_global_variable: new function, binds value to a variable in
- the global shell_variables table
-
-variables.h
- - bind_global_variable: new extern declaration
-
-builtins/declare.def
- - declare_internal: if -g given with name=value, but variable is not
- found in the global variable table, make sure to call
- bind_global_variable so the variable is created and modified at
- global scope. Fixes a bug where declare -g x=y could modify `x'
- at a previous function scope
-
-command.h
- - W_ASSIGNARRAY: new word flag, compound indexed array assignment
-
-subst.h
- - ASS_MKGLOBAL: new assignment flag, forcing global assignment even in
- a function context, used by declare -g
-
-execute_cmd.c
- - fix_assignment_words: set W_ASSIGNARRAY flag if -a option given to
- declaration builtin
-
-subst.c
- - do_assignment_internal: explicitly handle case where we are
- executing in a function and we want to create a global array or
- assoc variable
- - shell_expand_word_list: call make_internal_declare if -a option
- given to declaration builtin (W_ASSIGNARRAY); handle -g option with
- it (W_ASSNGLOBAL). Fixes inconsistency noticed by Vicente Couce
- Diaz <vituko@gmail.com>, where declare -ag foo=(bar) could modify
- array variable foo at previous function scope, not global scope
-
- 12/27
- -----
-bashline.c
- - Minix needs the third argument to tputs to be a void funtion taking
- an int argument, not an int-returning function. Fix from
- John E. Malmberg <wb8tyw@qsl.net> as part of VMS bash port
-
- 12/29
- -----
-configure.ac,version.c,patchlevel.h
- - bash-4.3-devel: new version, new shell compatibility level (43)
-
-subst.c
- - parameter_brace_patsub: put the bash-4.2 code back in from the
- change of 3/3 that runs the replacement string through quote
- removal, make it dependent on shell_compatibility_level <= 42
-
-builtins/shopt.def
- - compat42: new shopt option
- - set_compatibility_level: change logic to set and unset various
- compat variables and shell_compatibility_level
-
-COMPAT
- - new documentation for bash-4.3 compatibility changes
-
-doc/{bash.1,bashref.texi}
- - compat42: document new shopt option
-
-builtins/shopt.def
- - set_compatibility_opts: new function, sets the various shopt
- compat variables based on the value of shell_compatibility_level
-
-builtins/common.h
- - set_compatibility_opts: new extern declaration
-
-variables.c
- - BASH_COMPAT: new special variable; sets the shell compatibility
- level. Accepts values in decimal (4.2) or integer (42) form;
- Unsetting variable, setting it to empty string, or setting it to
- out-of-range value sets the shell's compatibility level to the
- default for the current version. Valid values are 3.1/31 through
- the current version
- - sv_shcompat: new function implementing logic for BASH_COMPAT
-
-variables.h
- - sv_shcompat: new extern declaration
-
-doc/{bash.1,bashref.texi}
- - BASH_COMPAT: description of new variable
-
-lib/readline/complete.c
- - _rl_colored_stats: default back to 0 for 4.3 release branch
-
- 1/5/2013
- --------
-quit.h
- - remove spurious call to itrace in CHECK_WAIT_INTR
-
-bashline.c
- - bash_event_hook: if we're going to jump to top_level, make sure we
- clean up after readline() by calling rl_cleanup_after_signal().
- Fixes bug reported against devel branch by Raphaël Droz
- <raphael.droz@gmail.com>
- - bash_event_hook: reset the event hook before checking for signals
- or traps in case we longjmp
-
-doc/{bash.1,bashref.texi}
- - small additions to the set -e section to make it more clear that
- contexts where -e is ignored extend to compound commands as well
- as shell functions
-
-lib/readline/readline.h
- - rl_signal_event_hook: new extern declaration
-
-lib/readline/input.c
- - rl_signal_event_hook: new variable, hook function to call when a
- function (currently just read(2)) is interrupted by a signal and
- not restarted
- - rl_getc: call rl_signal_event_hook instead of rl_event_hook
-
-lib/readline/doc/rltech.texi
- - rl_signal_event_hook: document new function
-
-bashline.c
- - changes to set rl_signal_event_hook instead of rl_event_hook
-
-lib/readline/readline.h
- - change readline version numbers to 6.3
-
- 1/6
- ---
-doc/{bash.1,bashref.texi}
- - a couple of changes to the descriptions of the ERR trap and its
- effects based on a message from Rob Nagler <nagler@bivio.biz>
-
- 1/9
- ---
-expr.c
- - expassign: invalidate curlval before freeing and NULLing tokstr to
- avoid aliasing issues. Fixes bug reported by Eduardo A. Bustamante
- López<dualbus@gmail.com> and Dan Douglas <ormaaj@gmail.com>
-
-braces.c
- - array_concat: don't be so aggressive in trying to short-circuit. We
- can only short-circuit if we have a single-element array where the
- element is an empty string (array[0] == "" array[1] = 0x0). Existing
- practice requires us to replicate arrays and prefix or append empty
- strings. Fixes bug reported by Eduardo A. Bustamante López
- <dualbus@gmail.com>
-
- 1/11
- ----
-execute_cmd.c
- - execute_builtin: since mapfile uses evalstring() to run its callbacks
- internally, just like eval, so it needs to handle the case where the
- temp environment given to mapfile persists throughout the entire
- set of callback commands. This might be a problem with trap also, but
- trap isn't run in the same way. Fixes bug reported by Dan Douglas
- <ormaaj@gmail.com>
-
- 1/13
- ----
-redir.c
- - redirection_error: before expanding the redirection word (if
- expandable_redirection_filename returns true), disable command
- substitution during expansion. Fixes bug reported by Dan Douglas
- <ormaaj@gmail.com>
-
-subst.c
- - expand_word_internal: case '\\': if the next character is an IFS
- character, and the expansion occurs within double quotes, and the
- character is not one for which backslash retains its meaning, add
- the (escaped) '\' and the (escaped) character. Fixes bug reported
- by Dan Douglas <ormaaj@gmail.com>
-
- 1/15
- ----
-builtins/cd.def
- - cd_builtin: make sure call to internal_getopt handles -e option.
- Fixes bug reported by <mashimiao.fnst@cn.fujitsu.com>
-
- 1/17
- ----
-subst.c
- - expand_word_list_internal: make sure tempenv_assign_error is
- initialized to 0
-
-execute_cmd.c
- - execute_simple_command: make sure tempenv_assign_error is reset to 0
- after it's tested to see if an error should force the shell to exit.
- Fixes problem where a the failure of a tempenv assignment preceding
- a non-special builtin `sticks' and causes the next special builtin
- to exit the shell. From a discussion on bug-bash started by
- douxin <wq-doux@cn.fujitsu.com>
-
- 1/20
- ----
-subst.c
- - parameter_brace_expand_rhs: call stupidly_hack_special_variables
- after assigning with ${param[:]=word} even if IFS is changing.
- Suggested by Dan Douglas <ormaaj@gmail.com> [TENTATIVE, needs work
- on IFS side effects]
-
-command.h
- - W_GLOBEXP (which was unused) is now W_SPLITSPACE (which isn't used
- yet)
-
-{execute_cmd,subst,variables}.c
- - removed all code that mentioned W_GLOBEXP
- - removed mention of gnu_argv_flags and code that set it
-
- 1/22
- ----
-subst.c
- - param_expand: set W_SPLITSPACE if we expand (unquoted) $* and
- IFS is unset or null so we can be sure to split this on spaces
- no matter what happens with IFS later
- - expand_word_internal: note that param_expand returns W_SPLITSPACE
- in the returned word flags and keep track of that state with
- `split_on_spaces'
-
- 1/23
- ----
-subst.c
- - expand_word_internal: if split_on_spaces is non-zero, make sure
- we split `istring' on spaces and return the resultant word. The
- previous expansions should have quoted spaces in the positional
- parameters where necessary. Suggested by Dan Douglas
- <ormaaj@gmail.com>
-
-execute_cmd.c
- - execute_command_internal: make sure any subshell forked to run a
- group command or user subshell at the end of a pipeline runs any
- EXIT trap it sets. Fixes debian bash bug 698411
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=698411
-
-subst.c
- - shell_expand_word_list: fix code that creates args for and calls
- make_internal_declare to avoid calling it twice (missing `else'
- in 12/26 change)
- - do_assignment_internal: fix code from 12/26 change to fix problem
- where an existing assoc variable could be converted to an array
- without checking `mkassoc'
-
- 1/24
- ----
-builtins/evalfile.c
- - _evalfile: add missing `close (fd)' calls before returning to
- avoid fd leaks. Bug and fix from Roman Rakus <rrakus@redhat.com>
-
- 1/25
- ----
-builtins/read.def
- - read_builtin: don't try to play tricks with the top of the unwind-
- protect stack after read gets a SIGALRM; save input_string to new
- memory, run the stack, then restore input_string and assign the
- variables. Part of fix for bug reported by konsolebox
- <konsolebox@gmail.com>; the rest of the fix is with the changes in
- trap and signal handling and doing away with interrupt_immediately
-
- 1/26
- ----
-redir.c
- - redirection_expand, write_here_string, write_here_document: before
- calling any of the word expansion functions, after setting
- expanding_redir to 1 (which bypasses the temp environment in the
- variable lookup functions), call sv_ifs to reset the cached IFS-
- related variables set by subst.c:setifs(). This ensures that
- redirections will not get any IFS values that are set in the
- temporary environment, as Posix specifies. Then, after the word
- expansions, after resetting expanding_redir to 0, call sv_ifs
- again to make sure the cached IFS values are set from any
- assignments in the temporary environment. We force executing_builtin
- to 1 to `fool' the variable lookup functions into using any temp
- environment, then reset it to its old value after sv_ifs returns.
- This is what allows read() to use the (cached) IFS variables set
- in the temp environment. Fixes inconsistency reported by Dan Douglas
- <ormaaj@gmail.com>
-
- 1/29
- ----
-lib/readline/display.c
- - update_line: fix off-by-one error when updating vis_lbreaks array
- in a multibyte locale that occurs when moving multibyte chars from
- one line down to another. Bug report and fix from Egmont
- Koblinger <egmont@gmail.com>
-
- 1/30
- ----
-configure.ac
- - changed version to 4.3-alpha
-
-redir.c
- - redir_open: handle open returning -1/EINTR, which seems to happen
- a lot with FIFOs and SIGCHLD, and call QUIT to handle other
- signals that can interrupt open(2). Bug report and initial fix
- from Mike Frysinger <vapier@gentoo.org>
-
- 1/31
- ----
-subst.c
- - parameter_brace_expand: make sure to propagate the PF_ASSIGNRHS flag
- to parameter_brace_expand_word
- - parameter_brace_expand_word: make sure that if the PF_ASSIGNRHS flag
- is set and we are expanding ${a[@]} or ${a[*]} we set quoted to
- include Q_DOUBLE_QUOTES before calling array_value_internal, mirroring
- what we do for $@ and $*. Fixes inconsistency reported by Dan
- Douglas <ormaaj@gmail.com>
-
-configure.ac
- - use AC_CHECK_TOOL instead of AC_CHECK_PROG to check for ar, since it
- will find $host-prefixed versions of utilities. Report and fix from
- Mike Frysinger <vapier@gentoo.org>
-
-builtins/setattr.def
- - set_var_attribute: check whether bind_variable (called when the
- variable whose attributes are being modified is found in the temp
- environment) just modified a read-only global variable, and don't
- bother marking the temporary variable for propagation if so. The
- propagation is superfluous and will result in a strange error
- message
-
- 2/2
- ---
-variables.c
- - initialize_shell_variables: don't try to import function definitions
- with invalid names from the environment if already in posix mode,
- but create them as (invisible) exported variables so they pass
- through the environment. Print an error message so user knows
- what's wrong. Fixes bug reported by Tomas Trnka <ttrnka@mail.muni.cz>
-
- 2/9
- ---
-
-builtins/read.def
- - sigalrm_seen, alrmbuf: now global so the rest of the shell (trap.c)
- can use them
- - sigalrm: just sets flag, no longer longjmps to alrmbuf; problem was
- longjmp without manipulating signal mask, leaving SIGALRM blocked
-
-quit.h
- - move CHECK_ALRM macro here from builtins/read.def so trap.c:
- check_signals() can call it
-
-trap.c
- - check_signals: add call to CHECK_ALRM before QUIT
- - check_signals_and_traps: call check_signals() instead of including
- CHECK_ALRM and QUIT inline. Integrating check for read builtin's
- SIGALRM (where zread call to check_signals_and_traps can see it)
- fixes problem reported by Mike Frysinger <vapier@gentoo.org>
-
- 2/12
- ----
-lib/glob/xmbsrtowcs.c
- - xdupmbstowcs2: fixed but where end of string was not handled
- correctly, causing loop to go past end of string in a bunch of cases.
- Fixes bug reported by "Dashing" <dashing@hushmail.com>
-
-
- 2/13
- ----
-builtins/pushd.def
- - popd_builtin: treat any argument that isn't -n or of the form
- [-+][[:digit:]]* as an error. Fixes problem reported by Bruce
- Korb <bruce.korb@gmail.com>
-
- 2/14
- ----
-configure.ac
- - add check for sig_atomic_t; already a placeholder for it in
- config.h.in
-
- 2/15
- ----
-subst.c
- - do_compound_assignment: don't call assign_compound_array_list with
- a NULL variable in case make_local_xxx_variable returns NULL
- (it will if you try to shadow a readonly or noassign variable).
- Fixes bug reported by Richard Tollerton <rich.tollerton@ni.com>
-
- 2/16
- ----
-variables.c
- - make_local_variable: print error messager if an attempt is made to
- create a local variable shadowing a `noassign' variable. Previously
- we just silently refused to do it
-
-trap.[ch]
- - get_original_signal: now global so rest of the shell can use it
-
-sig.c
- - initialize_shell_signals: install a signal handler for SIGTERM
- that does nothing except set a sigterm_received flag instead of
- ignoring it with SIG_IGN, as long as SIGTERM is not ignored when
- the shell is started. Use get_original_signal early to get the
- original handler, since we will do that later anyway
- - set_signal_handler: if installing sigterm_sighandler as the SIGTERM
- handler, make sure to add SA_RESTART flag to make it as close to
- SIG_IGN as possible
-
-sig.h
- - sigterm_sighandler: new extern declaration
-
-quit.h
- - RESET_SIGTERM: set sigterm_receved to 0
- - CHECK_SIGTERM: check sigterm_received; if it's non-zero, treat it
- as a fatal signal and call termsig_handler to exit the shell
-
-jobs.c
- - make_child: call RESET_SIGTERM just before fork() so we can detect
- if the child process received a SIGTERM before it's able to change
- the signal handler back to what it was when the shell started
- (presumably SIG_DFL). Only has effect if the shell installed
- sigterm_sighandler for SIGTERM, interactive shells that were not
- started with SIG_IGN as the SIGTERM handler
- - make_child: call RESET_SIGTERM in the parent after fork() so the
- rest of the shell won't react to it
-
-execute_cmd.c
- - execute_simple_command: call CHECK_SIGTERM after make_child in child
- to catch SIGTERM received after fork() and before restoring old
- signal handlers
- - execute_disk_command: call CHECK_SIGTERM after make_child in child
- process after restoring old signal handlers and again just before
- calling shell_execve. Fixes race condition observed by
- Padraig Brady <p@draigbrady.com> when testing with his `timeout'
- program
-
-lib/readline/display.c
- - open_some_spaces: new function, subset of insert_some_chars that just
- opens up a specified number of spaces to be overwritten
- - insert_some_spaces: now just calls to open_some_spaces followed by
- _rl_output_some_chars
- - update_line: use col_temp instead of recalculating it using
- _rl_col_width in the case where we use more columns with fewer bytes
- - update_line: use open_some_spaces and then output the right number
- of chars instead of trying to print new characters then overwrite
- existing characters in two separate calls. This includes removing
- some dodgy code and making things simpler. Fix from Egmont
- Koblinger <egmont@gmail.com>
- - use new variable `bytes_to_insert' instead of overloading temp in
- some code blocks (nls - nfd, bytes that comprise the characters
- different in the new line from the old)
-
- 2/18
- ----
-redir.c
- - do_redirection_internal: add undoable redirection for the implicit
- close performed by the <&n- and >&n- redirections. Fixes bug
- reported by Stephane Chazelas <stephane.chazelas@gmail.com>
-
- 2/19
- ----
-sig.c
- - termsig_handler: an interactive shell killed by SIGHUP and keeping
- command history will try to save the shell history before exiting.
- This is an attempt to preserve the save-history-when-the-terminal-
- window-is-closed behavior
-
- 2/21
- ----
-braces.c
- - brace_expand: if a sequence expansion fails (e.g. because the
- integers overflow), treat that expansion as a simple string, including
- the braces, and try to process any remainder of the string. The
- remainder may include brace expansions. Derived from SuSE bug
- 804551 example (https://bugzilla.novell.com/show_bug.cgi?id=804551)
-
- 2/23
- ----
-{quit,sig}.h,sig.c
- - sigterm_received declaration now in sig.h; type is sig_atomic_t
- - sigwinch_received type now sig_atomic_t
- - sig.h includes bashtypes.h and <signal.h> if SIG_DFL not defined
- (same logic as trap.h) to pick up sig_atomic_t
-
-unwind_prot.c
- - include sig.h before quit.h (reverse order)
-
- 2/27
- ----
-builtins/shopt.def
- - reset_shopt_options: make sure check_window_size is reset to the
- default from config.h, not unconditionally to 0
-
-jobs.[ch]
- - last_made_pid, last_asynchronous_pid: now volatile. Change from SuSE
-
-jobs.c
- - wait_for: if we're using sigaction to install a handler for SIGCHLD,
- make sure we specify SA_RESTART
-
-lib/{tilde,readline}/shell.c
- - get_home_dir: instead of looking in the password file every time,
- look once and cache the result
-
-sig.[ch]
- - sigwinch_received, sigterm_received: now `volatile' qualified
-
-sig.c,quit.h
- - interrupt_state,terminating_signal: now sig_atomic_t
-
- 3/1
- ---
-MANIFEST,examples/*
- - removed around 120 files without FSF copyrights; requested by
- Karl Berry in early January
-
- 3/2
- ---
-lib/malloc/malloc.c
- - morecore: only check whether SIGCHLD is trapped if SIGCHLD is defined
-
-doc/bashref.texi
- - Fixed most of the examples in the GNU Parallel section to use better
- shell idioms following complaints on bug-bash; added a couple of
- examples and smoothed out the text
-
-quit.h
- - include "sig.h" for sig_atomic_t
-
-lib/readline/display.c
- - update_line: when inserting one or more characters at the end of
- the display line in a non-multibyte environment, just write from the
- first difference to the end of the line and return. We don't have
- to adjust _rl_last_c_pos. This is needed to adjust from the old
- two-part copy to a single call to _rl_output_some_chars (change of
- 2/16)
-
- 3/4
- ---
-Makefile.in,doc/Makefile.in
- - PACKAGE_TARNAME, docdir: new variables substituted by autoconf
- - OTHER_DOCS,OTHER_INSTALLED_DOCS: new variables with auxiliary
- documentation files to be installed into $(docdir)
- - install: add new rule to install $(OTHER_DOCS)
- - uninstall: add new rule to uninstall $(docdir)/$(OTHER_INSTALLED_DOCS)
-
-doc/bash.1
- - add URL to `POSIX' file in `SEE ALSO' section; put pointer to that
- section in --posix and set -o posix descriptions
-
-examples/
- - removed around 110 examples at the request of the FSF due to copyright
- issues
-
- 3/5
- ---
-builtins/setattr.def
- - readonly: modified help text slightly to make it clearer that
- functions aren't changed or displayed unless the -f option is given.
- Report from <gotmynick@gmail.com>
-
- 3/9
- ---
-include/typemax.h
- - SIZE_MAX: define to 65535 (Posix minimum maximum) if not defined
-
-parse.y
- - include "typemax.h" for possible SIZE_MAX definition, make sure we
- include it after shell.h
-
-{braces,expr}.c
- - include "typemax.h" for possible INTMAX_MIN and INTMAX_MAX definitions
-
- 3/10
- ----
-bashline.c
- - bash_default_completion: make sure completion type of `!' (same as
- TAB but with show-all-if-ambiguous set) and glob-word-completion
- sets rl_filename_completion_desired to 0 so extra backslashes don't
- get inserted by `quoting' the completion. We can't kill all the
- matches because show-all-if-ambiguous needs them. Bug report from
- Marcel (Felix) Giannelia <info@skeena.net>
-
-[bash-4.3-alpha frozen]
-
- 3/14
- ----
-general.c
- - trim_pathname: use memmove instead of memcpy since the source and
- destination pathnames may overlap. Report and fix from Matthew
- Riley <mattdr@google.com>
-
- 3/18
- ----
-configure.ac
- - socklen_t is defined as `unsigned int' if configure can't find it
-
- 3/20
- ----
-lib/readline/complete.c
- - S_ISVTX: since it's not defined on all platforms (Minix), make sure
- its use is protected with #ifdef
-
- 3/21
- ----
-doc/{bash.1,bashref.texi}
- - Added mention of ${!name[@]} and ${!name[*]} expansions to get all
- indices of an array. Suggested by Jonathan Leffler
- <jonathan.leffler@gmail.com>
-
- 3/24
- ----
-subst.h
- - SD_IGNOREQUOTE: new define for skip_to_delim; if set, means that
- single quotes (for now) will be treated as ordinary characters
-
-subst.c
- - skip_to_delim: handle SD_IGNOREQUOTE. no callers use it for now
-
- 3/25
- ----
-support/config.{guess,sub}
- - updated to versions from autoconf-2.69
-
- 3/31
- ----
-lib/sh/shquote.c
- - sh_single_quote: short-circuit quoting a single "'" instead of
- creating a long string with empty single-quoted strings
-
-parser.h
- - DOLBRACE_QUOTE2: new define, like DOLBRACE_QUOTE, but need to single-
- quote results of $'...' expansion because quote removal will be
- done later. Right now this is only done for ${word/pat/rep}
-
-parse.y
- - parse_matched_pair: set state to DOLBRACE_QUOTE2 for pattern
- substitution word expansion so we don't treat single quote specially
- in the pattern or replacement string
- - parse_matched_pair: if we're parsing a dollar-brace word expansion
- (${...}) and we're not treating single quote specially within
- double quotes, single-quote the translation of $'...' ansi-c
- escaped strings. Original report and fix from Eduardo A.
- Bustamante López <dualbus@gmail.com>
-
-subst.c
- - extract_dollar_brace_string: ${word/pat/rep} scanning now sets the
- DOLBRACE_QUOTE2 flag instead of DOLBRACE_QUOTE so we don't treat
- single quotes specially within a double-quoted string
-
-execute_cmd.c
- - fix_assignment_words: skip over assignment statements preceding a
- command word before trying to figure out whether or not assignment
- statements following a possible declaration command should be
- treated specially. Fixes bug reported by Dan Douglas
- <ormaaj@gmail.com>
-
- 4/4
- ---
-lib/readline/readline.c
- - _rl_dispatch_subseq: only call _rl_vi_set_last (and check whether
- the key is a text modification command) if the key sequence length
- is 1. That keeps the arrow keys from setting the last command
- when called in vi command mode. Fixes bug reported by Ian A.
- Watson <watson_ian_a@lilly.com>
-
- 4/6
- ---
-lib/readline/bind.c
- - rl_parse_and_bind: when parsing a double-quoted string as the value
- of a variable, make sure we skip past the leading double quote.
- Fix from Andreas Schwab <schwab@linux-m68k.org>
-
-variables.c
- - hash_lookup: set new local variable last_table_searched to the table
- a successful lookup appears in; tested in make_local_variable to
- solve the problem below
- - make_local_variable: if we find a variable with the tempenv flag
- set at the same `level' as variable_context', but not found in the
- temporary_env (temp environment preceding the builtin), return it.
- The temp environment preceding the function call has already been
- merged (in execute_function) into the list of variable contexts the
- function sees as shell_variables by the time this is called. Fixes
- inconsistency pointed out by Dan Douglas <ormaaj@gmail.com>
-
-subst.c
- - expand_arith_string: expanded out contents of expand_string,
- expand_string_internal, expand_string_if_necessary to create a
- WORD_DESC and call call_expand_word_internal() on it directly.
- We don't want process substitution to be performed ( 1<(2) ) should
- mean something different in an arithmetic expression context.
- It doesn't work to just turn on the DQUOTE flag, since that means
- that things like ${x["expression"]} are not expanded correctly.
- Fixes problem pointed out by Dan Douglas <ormaaj@gmail.com>
-
- 4/13
- ----
-subst.c
- - process_substitute: run the EXIT trap before exiting, as other
- shells seem to. Fixes problem pointed out by Dan Douglas
- <ormaaj@gmail.com>
-
-lib/readline/readline.c
- - readline_internal_setup: call rl_vi_insertion_mode to enter vi
- mode instead of rl_vi_insert_mode to avoid resetting the saved last
- command information. Posix says that `.' can repeat a command
- that was entered on a previous line so we need to save the info.
- Fixes bug reported by Ian A. Watson <watson_ian_a@lilly.com>
-
- 4/14
- ----
-lib/readline/complete.c
- - rl_completion_matches: make sure xrealloc returns something non-null
- (can happen when interrupted by a signal) before trying to add
- matches to match_list
-
-subst.c
- - array_remove_pattern: return NULL right away if array_variable_part
- returns an invisible variable
- - array_length_reference: handle array_variable_part returning an
- invisible variable
- - get_var_and_type: handle array_variable_part returning an invisible
- variable
-
- 4/15
- ----
-execute_cmd.c
- - execute_command_internal: make sure to run the EXIT trap for group
- commands anywhere in pipelines, not just at the end. From a point
- raised by Andreas Schwab <schwab@linux-m68k.org>
-
-variables.c
- - bind_int_variable: make sure invisible flag is unset. Fixes problems
- like "declare -ai a; : $(( a[4]=4 ));"
-
-arrayfunc.c
- - array_variable_part: return variable even if invisible flag set,
- callers must handle invisible vars
-
- 4/18
- ----
-builtins/set.def
- - unset_builtin: if -n flag given, call unset_nameref instead of
- unset_variable
-
-variables.c
- - find_variable_nameref: print warning message if nameref circular
- reference detected, return NULL and let caller deal with it
-
-builtins/declare.def
- - declare_builtin: only disallow global references at this point if
- we are at the global scope
-
- 5/16
- ----
-configure.ac
- - update release status to beta
-
- 5/23
- ----
-trap.c
- - run_pending_traps: save and restore pipeline around calls to
- evalstring() in case we get a trap while running a trap. Have to
- figure out the recursive running traps issue elsewhere. Fixes
- bug reported by Roman Rakus <rrakus@redhat.com>
- - run_pending_traps: make sure to set running_trap to the appropriate
- signal value when running a trap command
- - run_pending_traps: short-circuit immediately if running_trap set
- when invoked. Could change this later to only skip if it would
- run the same trap as currently being run (running_trap == sig + 1)
-
-configure.ac
- - add warning if bison not found
-
-lib/readline/doc/rltech.texi
- - new section with an example program illustrating the callback
- interface. Suggested by Peng Yu <pengyu.ut@gmail.com>
-
-examples/loadables/Makefile.in
- - remove references to `cut' and `getconf', which were removed in
- early March
-
- 5/28
- ----
-lib/sh/pathphys.c
- - sh_realpath: correct inverted two arguments to call to sh_makepath.
- Report and fix from Julien Thomas <jthomas@exosec.fr>
-
- 6/7
- ---
-execute_cmd.c
- - executing_line_number: the else clauses that are conditional on
- various options being defined can simply be if clauses -- they are
- mutually exclusive and all have `return' in the body. Fixes bug
- reported by Flavio Medeiros <flaviomotamedeiros@gmail.com>
-
- 6/25
- ----
-lib/readline/readline.c
- - readline_internal_setup: only sent the meta-key enable string to the
- terminal if we've been told to use one and the terminal has been
- successfully initialized (RL_ISSTATE (RL_STATE_TERMPREPPED) != 0).
- Suggested by Dan Mick <dan.mick@inktank.com>
-
-lib/readline/signals.c
- - _rl_signal_handler: call any defined signal hook after calling
- rl_resize_terminal when handling a SIGWINCH. We already have called
- the original SIGWINCH handler but will not be resending the signal
- to ourselves
-
- 6/27
- ----
-lib/readline/doc/history.3, doc/bash.1
- - fix description of the `$' modifier to note that it expands to the
- last *word*, which is not always the last argument. Report from
- ariyetz@gmail.com via gnu.org RT
-
- 6/29
- ----
-lib/glob/smatch.c
- - glob_asciiranges: initialize to value of GLOBASCII_DEFAULT instead
- of 0 (0 if not defined)
-
-configure.ac,config.h.in
- - --enable-glob-asciiranges-default: new option, controls the value of
- GLOBASCII_DEFAULT; use it to turn globasciiranges shopt option on
- by default
-
-doc/bashref.texi
- - document new --enable-glob-asciiranges-default configure option
-
-variables.c
- - assign_in_env: implement += value appending semantics for assignments
- preceding command names
-
- 7/4
- ---
-expr.c
- - set lasttok = NUM in all of the functions that result in a number,
- even if it's a boolean, to avoid errors with constructs like
- 1 * x = 1, which should be an asignment error. Fixes problem
- pointed out by Dan Douglas <ormaaj@gmail.com>
-
-parse.y
- - decode_prompt_string: don't bother to call strcpy if
- polite_directory_format returns its argument unchanged. It's not
- necessary and Mac OS X 10.9 aborts because of a supposed overlapping
- string copy. Bug and fix from simon@hitzemann.org
-
-subst.c
- - parameter_brace_find_indir: new function, code from
- parameter_brace_expand_indir that looks up the indirectly-referenced
- variable, but does not expand it
- - parameter_brace_expand_indir: call parameter_brace_find_indir to
- look up indirected variable reference
- - get_var_and_type: call parameter_brace_find_indir if it looks like we
- are trying to manipulate an indirect variable reference like
- ${!b%%foo}. This makes a difference if !b references an array
- variable. Bug report from Dan Douglas <ormaaj@gmail.com>
-
- 7/6
- ---
-lib/sh/casemod.c
- - sh_modcase: make sure argument passed to is_basic is <= UCHAR_MAX,
- since cval can convert something to a wchar_t greater than UCHAR_MAX.
- Fixes bug reported by Tomasz Tomasik <scx.mail@gmail.com>
-
- 7/8
- ---
-lib/readline/history.c
- - add_history_time: if history_length == 0, referencing history_length
- - 1 will result in an array bounds error, so make history_length be
- at least 1 before going on. Fixes bug reported by Geng Sheng Liu
- <gsliu.tju@gmail.com>
-
-builtins/setattr.def
- - show_func_attributes: display definition (if NODEFS argument is 0) and
- attributes for a particular function; used by `declare -fp name'
-
-builtins/declare.def
- - declare_internal: call show_func_attributes if -f supplied with -p.
- Fixes inconsistency observed by Linda Walsh <bash@tlinx.org>
-
-builtins/common.h
- - new extern declaration for show_func_attributes
-
-builtins/read.def
- - read_builtin: check the first supplied variable name for validity
- before attempting to read any input, since we know we will have to
- at least use that one. Don't check any other names yet. Suggested
- by jidanni@jidanni.org
-
- 7/10
- ----
-redir.c
- - do_redirection_internal: when closing a file descriptor with
- r_close_this ([n]<&-) count close errors as redirection errors if
- errno ends up as EIO or ENOSPC. Originally reported back in April
- 2012 by Andrey Zaitsev <jstcdr@gmail.com>
-
- 7/11
- ----
-redir.c
- - do_redirection_internal: before calling check_bash_input, make sure
- that we don't call check_bash_input for an asynchronous process that
- is replacing stdin with something else. The seek backwards affects
- the parent process as well, since parents and children share the
- file pointer. Fixes problem originally reported in March 2013 by
- Martin Jackson <mjackson220.list@gmail.com>
-
- 7/13
- ----
-doc/{bash.1,bashref.texi}
- - slight change to add a description of `shopt -o' suggested by Bruce
- Korb <bruce.korb@gmail.com>
-
- 7/19
- ----
-lib/readline/histfile.c
- - history_do_write: if close returns < 0, make sure we restore the
- backup history file and return a non-zero value
- - history_truncate_file: if write or close return < 0, make sure we
- return a non-zero value
-
-[bash-4.3-beta frozen]
-
- 7/21
- ----
-lib/readline/isearch.c
- - rl_display_search: now takes an entire search context flags word as
- the second argument, instead of just reverse flag; changed callers
- - rl_display_search: if the search has failed, add `failed ' to the
- beginning of the search prompt
- - _rl_isearch_dispatch: if the search has failed, display the entire
- search string with an indication that the search failed but with the
- last matching line. Suggested by jidanni@jidanni.org
-
-command.h
- - W_ASSIGNINT: new word flag; used internally for make_internal_declare
- and set by fix_assignment_words
-
-execute_cmd.c
- - fix_assignment_words: set W_ASSIGNINT if compound assignment and -i
- given as option. We don't do anything with the value yet
-
-subst.c
- - shell_expand_word_list: rework the way the option list that is
- passed to make_internal_declare is created
-
- 8/1
- ---
-doc/{bash.1,bashref.texi}
- - minor changes to description of $! based on a report from Chris
- Down <chris@chrisdown.name>
-
-arrayfunc.c
- - assign_array_element_internal: before trying to get an array's max
- index to process a negative subscript, make sure the array exists.
- Bug report from Geir Hauge <geir.hauge@gmail.com>
-
- 8/2
- ---
-arrayfunc.c
- - assign_array_element_internal: before using array_max_index() when
- processing a negative subscript, make sure the variable is an array.
- if it's not, use 0 as array_max_index assuming it's a string.
- Fixes bug report from Geir Hauge <geir.hauge@gmail.com>
-
- 8/3
- ---
-Makefile.in
- - pcomplete.o: add dependency on $(DEFDIR)/builtext.h. Suggested by
- Curtis Doty <curtis@greenkey.net>
-
- 8/5
- ---
-lib/glob/sm_loop.c
- - strcompare: short-circuit and return FNM_NOMATCH if the lengths of the
- pattern and string (pe - p and se - s, respectively) are not equal
- - strcompare: don't bother trying to set *pe or *se to '\0' if that's
- what they already are. Fixes bug reported by Geir Hauge
- <geir.hauge@gmail.com>
-
- 8/6
- ---
-doc/{bash.1,bashref.texi},builtins/hash.def,lib/readline/doc/rluser.texi
- - minor typo changes from Geir Hauge <geir.hauge@gmail.com>
-
-bultins/help.def
- - show_longdoc: avoid trying to translate the empty string because it
- often translates to some boilerplate about the project and
- translation. Report and fix from Geir Hauge <geir.hauge@gmail.com>
-
- 8/8
- ---
-builtins/help.def
- - help_builtin: try two passes through the list of help topics for each
- argument: one doing exact string matching and one, if the first pass
- fails to find a match, doing string prefix matching like previous
- versions. This prevents `help read' from matching both `read' and
- `readonly', but allows `help r' to match everything beginning with
- `r'. Inspired by report from Geir Hauge <geir.hauge@gmail.com>
-
- 8/13
- ----
-builtins/fc.def
- - fc_builtin,fc_gethnum: calculate `real' end of the history list and
- use it if -0 is specified as the beginning or end of the history
- range to list. Doesn't work for fc -e or fc -s by design. Feature
- requested by Mike Fied <micfied@gmail.com>
-
- 8/16
- ----
-trap.c
- - _run_trap_internal: use {save,restore}_parser_state instead of
- {save,restore}_token_state. It's more comprehensive
-
- 8/23
- ----
-doc/bash.1
- - disown: remove repeated text. Report and fix from Thomas Hood
- <jdthood@gmail.com>
-
- 8/25
- ----
-lib/readline/rltty.c
- - set_special_char: fix prototype (last arg is rl_command_func_t *)
-
-sig.c
- - set_signal_handler: return oact.sa_handler only if sigaction
- succeeds; if it doesn't, return SIG_DFL (reasonable default). From
- https://bugzilla.redhat.com/show_bug.cgi?id=911404
-
-bashline.c
- - attempt_shell_completion: fix to skip assignment statements preceding
- command name even if there are no programmable completions defined.
- From https://bugzilla.redhat.com/show_bug.cgi?id=994659
- - attempt_shell_completion: if still completing command word following
- assignment statements, do command completion even if programmable
- completion defined for partial command name entered so far
-
- 8/26
- ----
-pcomplete.c
- - pcomp_filename_completion_function: make sure rl_filename_dequoting_function
- is non-NULL before trying to call it. Bug and fix from
- Andreas Schwab <schwab@linux-m68k.org>
-
-bashline.c
- - bash_command_name_stat_hook: if *name is not something we're going
- to look up in $PATH (absolute_program(*name) != 0), just call the
- usual bash_filename_stat_hook and return those results. This makes
- completions like $PWD/exam[TAB] add a trailing slash
-
- 9/2
- ---
-builtins/read.def
- - read_builtin: before comparing what we read to the delim, make sure
- we are not supposed to be ignoring the delimiter (read -N). We
- set the delim to -1, but it's possible to read a character whose
- int value ends up being between -1 and -128. Fixes bug
- reported by Stephane Chazelas <stephane.chazelas@gmail.com>
-
-doc/{bash.1,bashref.texi}
- - word splitting: crib some language from Posix to make it clear that
- characters in IFS are treated as field *terminators*, not field
- *separators*. Addresses issue raised by DJ Mills
- <danielmills1@gmail.com>
-
-lib/readline/{util.c,rldefs.h}
- - _rl_stricmp,_rl_strnicmp: now take const char * string arguments;
- changed prototype declarations
-
- 9/5
- ---
-doc/{bash.1,bashref.texi}
- - [[: modify description of pattern matching to make it clear that the
- match is performed as if the extglob option were enabled. From Red
- Hat bug https://bugzilla.redhat.com/show_bug.cgi?id=1002078
-
- 9/12
- ----
-lib/readline/isearch.c
- - _rl_isearch_dispatch: if we read an ESC and it's supposed to
- terminate the search, make sure we check for typeahead with
- _rl_pushed_input_available, since installing a hook function causes
- typeahead to be collected in `ibuffer' (input.c). If there is any,
- make sure we still use the ESC as a prefix character. Bug and fix
- from Mike Miller <mtmiller@ieee.org>
-
- 9/16
- ----
-builtins/{caller,cd,kill,pushd,wait}.def
- - builtin_usage(): make sure call to this sets return status to
- EX_USAGE
-
- 9/18
- ----
-terminal.c
- - rl_change_environment: new application-settable variable; if non-
- zero (the default), readline will modify LINES and COLUMNS in the
- environment when it handles SIGWINCH
- - _rl_get_screen_size: if rl_change_environment is non-zero, use setenv
- to modify LINES and COLUMNS environment variables
-
-readline.h
- - rl_change_environment: new extern declaration for applications
-
- 9/22
- ----
-configure.ac
- - relstatus: bumped version to bash-4.3-beta2
-
- 9/24
- ----
-
-lib/readline/readline.c
- - bind_arrow_keys_internal: added more key bindings for the numeric key
- pad arrow keys on mingw32. Patch from Pierre Muller
- <pierre.muller@ics-cnrs.unistra.fr>
-
- 10/19
- -----
-
-bashline.c
- - maybe_restore_tilde: version of restore_tilde that honors `direxpand';
- calls restore_tilde after saving directory expansion hook if
- necessary. Report from Andreas Schwab <schwab@linux-m68k.org>
-
-builtins/cd.def
- - -@: new option, allows cd to use `extended attributes' present in
- NFSv4, ZFS; idea taken from ksh93. Attributes associated with a
- file are presented as a directory containing the attributes as
- individual files. Original patch contributed by Cedric Blancher
- <cedric.blancher@gmail.com>
-
- 10/20
- -----
-aclocal.m4
- - BASH_CHECK_MULTIBYTE: check for wcwidth being broken with unicode
- combining characters needs a value to use when cross-compiling.
- Bug report from Bert Sutherland <bertsutherland@gmail.com>
-
-doc/{bash.1,bashref.texi}
- - document new -@ option to cd builtin
-
- 10/28
- -----
-lib/glob/{{gmisc,glob}.c,glob.h}
- - extglob_pattern renamed to extglob_pattern_p, declared in glob.h
-
-subst.c
- - expand_word_internal: typo fix: case to fix " $@\ " bug in bash-4.2
- had a typo (& isexp instead of &&)
-
- 10/29
- -----
-input.c
- - getc_with_restart: make sure local_index and local_bufused are
- reset to 0 before returning EOF, in case we are running an interactive
- shell without line editing and ignoreeof is set. Report and fix
- from Yong Zhang <yong.zhang@windriver.com>
-
-lib/readline/search.c
- - _rl_nsearch_init: take out extra third argument to rl_message; it
- only matches prototype (and maybe format) in cases where
- PREFER_STDARG and USE_VARARGS are both undefined, which is rare
-
- 10/31
- -----
-subst.c
- - process_substitute: when opening the named pipe in the child, open
- without O_NONBLOCK to avoid race conditions. Happens often on AIX.
- Bug report and fix from Michael Haubenwallner
- <michael.haubenwallner@salomon.at>
-
-builtins/ulimit.def
- - RLIMIT_NTHR: if RLIMIT_PTHREAD is not defined, but RLIMIT_NTHR is,
- use RLIMIT_NTHR (NetBSD)
-
- 11/5
- ----
-locale.c
- - set_default_locale_vars,set_locale_var: if TEXTDOMAINDIR has been
- set, and default_dir has a non-null value, call bindtextdomain(3)
- when TEXTDOMAIN is assigned a value. Fixes problem reported by
- Michael Arlt <qwertologe@googlemail.com>
-
- 11/6
- ----
-builtins/cd.def
- - cdxattr: only create synthetic pathname in `buf' if NDIRP argument
- is non-null
- - change_to_directory: if we have specified -@ and cdxattr returns
- failure, fail immediately. Fixes bug reported by Joshuah Hurst
- <joshhurst@gmail.com>
-
- 11/12
- -----
-redir.c
- - print_redirection: change r_err_and_out (&>) and its append form,
- r_append_err_and_out (&>>) cases to separate redirection operator
- from filename by a space, in case we have a process substitution.
- Fixes bug reported by admn ombres <admn.ombres@gmail.com>
-
- 11/15
- -----
-execute_cmd.c
- - execute_simple_command: don't close process substitution fds until
- we are finished executing any current shell function. Partial fix
- for bug reported by John Dawson <john.dawson@gmail.com>
-
-support/shobj-conf
- - add support for Darwin 13 (Mac OS X 10.9, Mavericks). Based on a
- report by Ludwig Schwardt <ludwig.schwardt@gmail.com>
-
- 11/20
- -----
-[bash-4.3-rc1 frozen]
-
- 11/24
- -----
-builtins/printf.def
- - bind_printf_variable: make sure that the variable assigned to is
- no longer marked as invisible. Fixes bug reported by NBaH
- <nbah@sfr.fr>
-
- 11/28
- -----
-jobs.c
- - delete_old_job: fix off-by-one error in job index in call to
- internal_warning. Bug report from Peter Cordes <peter@cordes.ca>
-
- 11/30
- -----
-doc/bashref.texi
- - add string to description of special parameters with name of
- special parameter prefixed by a $, so you can search for $#,
- for instance
-
- 12/2
- ----
-lib/readline/{histexpand.c
- - get_history_event: account for current_history() possibly returning
- NULL. Report and fix from Pankaj Sharma <pankaj.s01@samsung.com>
-
-
- 12/11
- -----
-
-lib/readline/parse-colors.c
- - get_funky_string: don't call abort if we see something we can't
- parse; just return an error
- - _rl_parse_colors: if we encounter an error while parsing $LS_COLORS
- we need to leave _rl_color_ext_list as NULL after freeing its
- elements, then turn off _rl_colored_stats. Report and fix from Martin
- Wesdorp <mwesdorp@casema.nl>
-
- 12/13
- -----
-
-lib/readline/parse-colors.c
- - _rl_parse_colors: if we encounter an unrecognized prefix, throw an
- error but try to recover and go on to the next specification
-
-variables.c
- - make_local_variable: for new variables this function creates, set
- the att_invisible attribute. All callers from declare_internal.
- Indirectly, this is a fix for bug with `declare -n var; var=foo;'
- reported by Pierre Gaston <pierre.gaston@gmail.com>
- - bind_variable: if assigning to nameref variable that doesn't have
- a value yet (e.g., with `declare -n var; var=foo'), don't try to
- use the unset name. Fixes a segfault reported by Pierre Gaston
- <pierre.gaston@gmail.com>
-
-execute_cmd.c
- - execute_command_internal: make sure last_command_exit_value is set
- to 0 after any command executed in the background. Fixes bug
- reported by Martin Kealey <martin@kurahaupo.gen.nz>
-
- 12/17
- -----
-support/config.{guess,sub}
- - updated to latest versions from git
-
- 12/19
- -----
-parse.y
- - struct STRING_SAVER: now has a new `flags' element, to identify the
- caller: alias expansion, double-paren parsing, or parse_and_execute
- - push_string: now sets flags to PSH_ALIAS if `ap' argument is non-NULL
- - push_string: now doesn't attempt to call strlen on a NULL string to
- set shell_input_line_size
- - parser_expanding_alias, parser_save_alias, parser_restore_alias: new
- functions to provide an external interface to push_string and
- pop_string; parser_save_alias sets flags element to PSH_SOURCE (could
- be renamed PSH_EXTERN someday)
- - shell_getc: when yy_getc returns '\0', instead of just testing
- whether the pushed_string_list is not-empty before popping it, don't
- pop if if the saved string has flags PSH_SOURCE, indicating that
- parse_and_execute set it before setting bash_input to the string.
- We should continue reading to the end of that string before popping
- back to a potential alias. Partial solution for the problem of aliases
- with embedded newlines containing `.' commands being executed out of
- order reported by Andrew Martin <andrew.martin@gmail.com>
- - shell_getc: when yy_getc returns '\0' and there is a saved string of
- type PSH_SOURCE, restart the read without popping the string stack
- if we have not read to the end of bash_input.location.string. Rest
- of fix for out-of-order execution problem
-
-externs.h
- - parser_expanding_alias, parser_save_alias, parser_restore_alias: new
- extern function declarations
-
-builtins/evalstring.c
- - pe_prologue: if the parser is expanding an alias, make sure to add
- an unwind-protect to restore the alias; undoes the work that will be
- performed by parse_and_execute/parse_string
- - parse_and_execute,parse_string: after calling push_stream to save
- bash_input, check whether or not the parser is currently expanding
- an alias (parser_expanding_alias() != 0). If it is, we want to save
- that string in the pushed_string_list, which we do with
- parser_save_alias.
-
- 12/23
- -----
-execute_cmd.c
- - execute_for_command: make sure to set line_number before expanding
- the word list, so expansion errors have the right line number.
- From a report from Ben Okopnik <ben@okopnik.com>
-
-expr.c
- - exp2: save token pointer before calling readtok(), arrange to use
- saved token pointer when printing error token on a division by 0
- error
-
- 12/27
- -----
-lib/readline/display.c
- - rl_redisplay: when calculating effects of invisible characters in a
- prompt that is split across physical screen lines to set the indices
- of linebreaks, don't bother testing local_prompt_prefix (line 751).
- That prefix doesn't matter when calculating prompt visible and
- invisible characters. Fixes problem reported by Jinesh Choksi
- <jinesh@onelittlehope.com>
-
-Makefile.in
- - install: make sure to use $(DESTDIR) when installing OTHER_DOCS.
- Report and fix from Matthias Klose <doko@debian.org>
-
-doc/texinfo.tex
- - updated to version of 2013-09-11
-
- 12/28
- -----
-lib/readline/undo.c
- - rl_do_undo: if we are undoing from a history entry (rl_undo_list ==
- current_history()->data), make sure the change to rl_line_buffer is
- reflected in the history entry. We use the guts of
- rl_maybe_replace_line to do the work. Fixes problem reported by
- gregrwm <backuppc-users@whitleymott.net>
-
- 12/30
- -----
-sig.c
- - sigint_sighandler: if we get a SIGINT (and this signal handler is
- installed) while the wait builtin is running, note that we received
- it in the same way as jobs.c:wait_sigint_handler and return. The
- various wait_for functions will look for that with CHECK_WAIT_INTR.
- This fixes the wait builtin not being interruptible in an interactive
- job control shell
-
- 12/31
- -----
-trap.c
- - set_signal_hard_ignored: rename set_signal_ignored to this, since it
- both sets original_signals[sig] and sets the HARD_IGNORE flag
- - set_signal_ignored: new function, now just sets original_signals[sig]
-
-trap.h
- - set_signal_hard_ignored: new external declaration
-
-sig.c
- - initialize_terminating_signals: call set_signal_hard_ignored instead
- of set_signal_ignored for signals with disposition SIG_IGN when the
- shell starts
-
-execute_cmd.c
- - setup_async_signals: make sure we get the original dispositions for
- SIGINT and SIGQUIT before starting the subshell, and don't call
- set_signal_ignored because that sets original_signals[sig]. If we
- don't, subsequent attempts to reset handling using trap will fail
- because it thinks the original dispositions were SIG_IGN. Posix
- interpretation 751 (http://austingroupbugs.net/view.php?id=751)
-
- 1/2/2014
- --------
-lib/sh/stringvec.c
- - strvec_mcreate, strvec_mresize: versions of create and resize that
- use malloc and realloc, respectively, instead of xmalloc/xrealloc
-
-braces.c
- - expand_amble,mkseq: use strvec_mcreate/strvec_mresize so we can
- catch and handle memory allocation failures instead of aborting
- with the xmalloc/xrealloc interface
-
-lib/sh/strdup.c
- - strdup replacement function for ancient systems that don't have it
-
-lib/sh/itos.c
- - mitos: new function, itos that uses strdup instead of savestring
-
-externs.h
- - strvec_mcreate/strvec_mresize: new extern declarations
- - mitos: new extern declaration
-
-configure.ac
- - bash version moved to 4.3-rc2
-
- 1/6
- ---
-doc/bash.1,lib/readline/doc/{rluser.texi,readline.3}
- - separate the description of what happens when readline reads the
- tty EOF character from the description of delete-char, leaving a
- note in the delete-char description about common binding for ^D.
- From suggestion by Parke <parke.nexus@gmail.com>
-
-lib/readline/doc/{version.texi,history.3,*.texi}
- - updated email addresses and copyright dates
-
- 1/7
- ---
-variables.c
- - delete_var: new function, just removes a variable from a hash table
- and frees it, without doing anything else
- - make_variable_value: if we are trying to assign to a nameref variable,
- return NULL if the value is null or the empty string or not a valid
- identifier
-
-variables.h
- - delete_var: new extern declaration
-
-subst.h
- - ASS_NAMEREF: new define for assignments, means assigning to a nameref
- variable
-
-builtins/declare.def
- - declare_internal: if we are creating and assigning to a nameref
- variable, make sure the value is a valid variable name (checks done
- by make_variable_value via bind_variable_value) and display an
- error message, deleting the variable we just created, if it is not.
- Fixes bug reported by Peggy Russell <prusselltechgroup@gmail.com>
-
- 1/9
- ---
-builtins/declare.def
- - declare_internal: turning on nameref attribute for an existing
- variable turns off -i/-l/-u/-c attributes (essentially the ones
- that cause evaluation at assignment time) for ksh93 compat
-
-builtins/setattr.def
- - show_name_attributes: if asked to display attributes and values for
- a nameref variable, don't follow the nameref chain to the end. More
- ksh93 compat
-
- 1/10
- ----
-trap.c
- - _run_trap_internal: use {save,restore}_parser_state instead of
- {save,restore}_token_state, like in run_pending_traps(); don't
- need to save and restore last_command_exit_value as a result
- - _run_trap_internal: call {save,restore}_pipeline like in
- run_pending_traps()
- - run_pending_traps: since we no longer run traps in a signal handler
- context, do not block and unblock the trapped signal while the
- trap is executing
- - run_pending_traps: allow recursive invocations (basically, running
- traps from a trap handler) with only a warning if the shell is
- compiled in debug mode. If a caller doesn't want this to happen,
- it should test running_trap > 0. signal_in_progress (sig) only works
- for the signals the shell handles specially
-
-bashline.c
- - bash_event_hook: make sure we clean up readline if interrupt_state
- is set, not only when SIGINT is not trapped. check_signals_and_traps
- will call check_signals, which calls QUIT, which will longjmp back
- to top_level, running the interrupt trap along the way. Fixes the
- problem of signal handlers being reset out from under readline, and
- not being set properly the next time readline is called, because
- signals_set_flag is still set to 1. XXX - might need to do this
- for other signals too?
-
- 1/11
- ----
-subst.h
- - SD_GLOB: new define for skip_to_delim; means we are scanning a
- glob pattern.
-
-subst.c
- - skip_to_delim: if flags include SD_GLOB, assume we are scanning a
- glob pattern. Currently only used to skip bracket expressions
- which may contain one of the delimiters
-
- 1/12
- ----
-subst.c
- - parameter_brace_expand: when expanding $@ as part of substring
- expansion, pattern substitution, or case modification, don't turn
- on the QUOTED_NULL flag. The code that constructs the word to be
- returned from expand_word_internal expects a different code path
- when $@ is being expanded. Fixes bug reported by Theodoros
- V. Kalamatianos <thkala@gmail.com>
-
- 1/19
- ----
-subst.c
- - list_dequote_escapes: new function; analogue of list_quote_escapes
-
-pathexp.c
- - quote_string_for_globbing: fix case where unescaped ^A is last char
- in string; need to pass it through unaltered instead of turning it
- into a bare backslash
- - quote_string_for_globbing: when quoting for regexp matching in [[,
- don't treat backslash as a quote character; quote the backslash as
- any other character. Part of investigation into reports from
- Eduardo A. Bustamante López <dualbus@gmail.com>
-
- 1/25
- ----
-builtins/gen-helpfiles.c
- - write_helpfiles: add prototype
- - make sure to #undef xmalloc/xfree/xrealloc/free if USING_BASH_MALLOC
- is defined. the code does not use them, and we don't link against
- xmalloc.o. Report from Linda Walsh <bash@tlinx.org>
-
-Makefile.in
- - variables.o: add dependency on builtins/builtext.h; helps with
- parallel builds. Report from Linda Walsh <bash@tlinx.org>
-
-support/shobj-conf
- - darwin: combine the stanzas into one that will not require them to
- be updated on each Mac OS X release. Report and fix from Max Horn
- <max@quendi.de>
-
- 1/27
- ----
-support/shobj-conf
- - darwin: changed the install_name embedded into the shared library
- to contain only the major version number, not the minor one. The
- idea is that the minor versions should all be API/ABI compatible,
- and it is better to link automatically with the latest one. Idea
- from Max Horn <max@quendi.de>
-
- 1/29
- ----
-[bash-4.3-rc2 released]
-
- 1/30
- ----
-lib/readline/readline.h
- - rl_clear_history, rl_free_keymap: add extern declarations. Report
- from Hiroo Hayashi <hiroo.hayashi@computer.org>
-
-general.c
- - include trap.h for any_signals_trapped() prototype
-
-lib/sh/unicode.c
- - include <stdio.h> for sprintf prototype
-
- 1/31
- ----
-execute_cmd.c
- - execute_simple_command: only posix-mode shells should exit on an
- assignment failure in the temporary environment preceding a special
- builtin. This is what the documentation and code comments have
- always said
- - execute_simple_command: make sure redirection errors, word expansion
- errors, and assignment errors to Posix special builtins cause a
- non-interactive posix mode shell to exit. Previously the shell
- would not exit if the failed special builtin was on the LHS of ||
- or &&
-
-pathexp.c
- - quote_string_for_globbing: when quoting a regular expression
- (QGLOB_REGEXP), allow an unquoted backslash to pass through
- unaltered. Don't use it as a quote character or quote it. More
- investigation from 1/24 and report by Mike Frysinger
- <vapier@gentoo.org>
- - quote_string_for_globbing: when quoting a regular expression
- (QGLOB_REGEXP), turn CTLESC CTLESC into CTLESC without adding a
- backslash to quote it. We should not have to quote it because it is
- not a character special to EREs. More investigation from 1/24
-
-lib/glob/glob.c
- - glob_testdir: now takes a second flags argument (currently unused);
- changed prototype and callers
-
- 2/1
- ---
-lib/glob/glob.c
- - glob_testdir: if flags argument includes GX_ALLDIRS (globstar), use
- lstat so we skip symlinks when traversing the directory tree.
- Originally reported by Chris Down <chris@chrisdown.name>
-
- 2/2
- ---
-lib/readline/undo.c
- - rl_do_undo: make sure CUR is non-zero before dereferencing it to
- check cur->data against rl_undo_list. Report and fix from
- Andreas Schwab <schwab@linux-m68k.org>
-
-doc/{bash.1,bashref.texi}
- - added slight clarifying language to the description of $*,
- describing what happens when the expansion is not within double
- quotes
-
- 2/4
- ---
-test.c
- - unary_test: add code to -v case so that it interprets `bare' array
- references (foo[1]) and returns true if that index has a value
-
- 2/5
- ---
-trap.c
- - restore_default_signal: fix SIGCHLD special case for SIG_TRAPPED flag
- off but SIG_INPROGRESS mode set and handler IMPOSSIBLE_TRAP_HANDLER;
- continue with resetting handler in this case. maybe_set_sigchld_trap
- will check these things before resetting sigchld trap from
- run_sigchld_trap. Fixes (apparently long-standing?) problem reported
- by Alexandru Damian <alexandru.damian@intel.com>
-
- 2/6
- ---
-lib/sh/strtrans.c
- - ansic_quote: fixed a bug when copying a printable character that
- consumes more than one byte; byte counter was not being incremented.
- Bug report from jidanni@jidanni.org
-
- 2/7
- ---
-input.c
- - getc_with_restart: if read(2) returns -1/EINTR and interrupt_state or
- terminating_signal is set (which means QUIT; will longjmp out of this
- function), make sure the local buffer variables are zeroed out to
- avoid reading past the end of the buffer on the next call. Bug report
- from Dan Jacobson <jidanni@jidanni.org>
-
- 2/9
- ---
-bashline.c
- - command_word_completion_function: if a directory in $PATH contains
- quote characters, we need to quote them before passing the candidate
- path to rl_filename_completion_function, which performs dequoting on
- the pathname it's passed. Fixes bug reported by Ilyushkin Nikita
- <ilyushkeane@gmail.com>
-
- 2/11
- ----
-parse.y
- - xparse_dolparen: save and restore shell_eof_token around call to
- parse_string, intead of just leaving it set to ')'
- - shell_getc: when -v is set, only print the command line when
- shell_eof_token is 0, so we don't print it multiple times when
- recursively entering the parser to parse $(...) commands. Fixes
- bug reported by Greg Wooledge <wooledg@eeg.ccf.org>
-
-[changed release status to 4.3-release]
-
- 2/13
- ----
-lib/sh/strtrans.c
- - ansic_quote: handle case where mbrtowc reports that the multibyte
- sequence is incomplete or invalid. Fixes bug reported by
- Eduardo A. Bustamante López <dualbus@gmail.com>
-
- 2/14
- ----
-variables.c
- - find_variable_nameref_context: fix a problem that caused the loop
- to go one context too close to the global context. In some cases,
- simple variable assignment would set a variable in the global
- context instead of a local context. Bug report from
- Geir Hauge <geir.hauge@gmail.com>
-
- 2/26
- ----
-[bash-4.3 released]
-
- 2/27
- ----
-aclocal.m4
- - broken wcwidth check: fix typo reported by David Michael
- <fedora.dm0@gmail.com>
-
- 2/28
- ----
-support/bashbug.sh
- - add ${BUGADDR} to error message printed if sending mail fails
-
-trap.c
- - _run_trap_internal: don't call {save,restore}_pipeline if running
- DEBUG trap; run_debug_trap calls them itself. Fixes bug reported
- by Moe Tunes <moetunes42@gmail.com>
-
-test.c
- - unary_test: fix 'R' case by using find_variable_noref instead of
- find_variable
- - test_unop: add back missing 'R' case. Fixes bug reported by
- NBaH <nbah@sfr.fr>
-
- 3/2
- ---
-jobs.c
- - end_job_control: if job control is active, we changed the terminal's
- process group, so make sure we restore it. Fixes bug reported by
- Eduardo A. Bustamante López <dualbus@gmail.com>
-
- 3/7
- ---
-pcomplete.c
- - pcomp_curtxt: new variable, holds the original text to be completed
- as passed to the programmable completion code
- - pcomp_filename_completion_function: if we are running compgen
- (presumably in a shell function completion) and performing readline
- completion, check the word being completed. If it's not empty, but
- the original word passed to the programmable completion code is an
- empty string (""), call a dequoting function if one is available.
- This compensates for an assumption in bash-completion. Reported by
- Albert Shih <Albert.Shih@obspm.fr>
-
-lib/readline/readline.c
- - _rl_dispatch_subseq: when deciding whether or not to set vi mode's
- idea of the last command, use whether or not the dispatching keymap
- is vi_movement_keymap instead of the key sequence length. The `c',
- `d', and `y' commands all take motion commands as `arguments' and
- will produce key sequences longer than 1 character. The arrow keys
- will end up dispatching out of a different keymap, so the test will
- prevent arrow keys from setting the last command (the problem in
- bash-4.2). Bug report from Daan van Rossum <daan@flash.uchicago.edu>
-
-lib/readline/vi_mode.c
- - _rl_vi_motion_command: convenience function to test whether a key is
- a vi-mode motion command
-
-lib/readline/rlprivate.h
- - _rl_vi_motion_command: extern declaration
-
-parse.y
- - parse_matched_pair: we should not skip processing single quotes in
- posix mode if dolbrace_state == DOLBRACE_QUOTE2 (pattern
- substitution). Fixes bug reported by David Sines
- <dave.gma@googlemail.com>
-
- 3/10
- ----
-lib/readline/readline.c
- - _rl_dispatch_callback: treat a return value of -1 as the end of
- a command dispatch sequence if the current context doesn't
- indicate that we're reading a multi-key sequence
- ((cxt->flags & KSEQ_SUBSEQ) == 0). Turn off the multikey flag
- and free the context chain in this case. Fixes one bug reported
- by Felix Yan <felixonmars@gmail.com> to bug-readline list
- - _rl_dispatch_callback: treat a return value of > 0 the same as 0
- and return from the function, since only values < 0 cause us to
- simulate recursion. Rest of fix for bug tracked down by
- Anatol Pomozov <anatol.pomozov@gmail.com>
-
- 3/11
- ----
-
-execute_cmd.c
- - execute_in_subshell: if a longjmp occurs, set result to
- EXECUTION_FAILURE only if last_command_exit_value == EXECUTION_SUCCESS;
- use value of last_command_exit_value otherwise. Fixes cosmetic
- issue reported by Dennis Lambe Jr. <malsyned@malsyned.net>
-
-doc/bash.1
- - shell-kill-word and shell-backward-kill-word should be documented
- as unbound by default. Report from Oliver Hartley
- <ohartley@talktalk.net>
-
-trap.c
- - run_pending_traps: save value of $? before running trap commands in
- trap_saved_exit_value, like run_exit_trap
- - _run_trap_internal: save value of $? before running trap commands in
- trap_saved_exit_value, like run_exit_trap
-
-builtins/common.c
- - get_exitstat: when running `return' in a trap action, and it is not
- supplied an argument, use the saved exit status in
- trap_saved_exit_value. Fixes Posix problem reported by
- Eduardo A. Bustamante López <dualbus@gmail.com>
-
- 3/13
- ----
-lib/sh/shquote.c
- - sh_contains_quotes: new function, returns true if a given string
- contains any of the shell quote characters (single quote, double
- quote, or backslash)
-
-externs.h
- - sh_contains_quotes: new extern declaration
-
-pcomplete.c
- - pcomp_filename_completion_function: more changes for the benefit of
- bash-completion: if the argument is not the same as the original
- argument passed to the programmable completion code (pcomp_curtxt),
- and we are being run by compgen as part of a completion, dequote the
- argument as bash-completion expects. Fix for the complete-word-
- with-quoted-special-chars problem with bash-completion
-
- 3/17
- ----
-execute_cmd.c
- - execute_intern_function: when in posix mode, make defining a function
- with the same name as a special builtin a fatal error only when the
- shell is not interactive. Interactive shells display an error
- message and go on. From a discussion with Doug McIlroy
- <doug@cs.dartmouth.edu>
-
- 3/18
- ----
-arrayfunc.c
- - assign_compound_array_list: when using expand_assignment_string_to_string
- to expand the value in a ( [x]=y ) compound assignment, make sure
- that we convert 0x0 to "" when expanding [x]= so it doesn't appear as
- if the index is unset. Fixes bug reported by Geir Hauge
- <geir.hauge@gmail.com>
-
-builtins/common.c
- - get_exitstat: update fix of 3/11 to allow the DEBUG trap to use the
- current value of $? instead of the value it had before the trap
- action was run. This is one reason the DEBUG trap exists, and
- extended debug mode uses it. Might want to do this only in Posix
- mode
-
-doc/{bash.1,bashref.texi}
- - return: add language cribbed from Posix saying what happens when
- return is run without an argument from a trap, including the DEBUG
- trap exception
-
- 3/19
- ----
-lib/glob/gmisc.c
- - extglob_pattern_p: make sure ?(patlist) is flagged as an extglob
- pattern
-
-lib/glob/glob.c
- - extglob_skipname: rewrite to handle patterns that begin but do not
- end with an extglob pattern; change test for easy case and loop
- through patterns accordingly. Fixes problem with matching filenames
- with a leading dot reported by Stephane Chazelas
- <stephane.chazelas@gmail.com>
- - wextglob_skipname: make analogous changes
-
- 3/20
- ----
-Makefile.in
- - pass -DDEBUG down to builds in readline and history directories
-
-lib/readline/util.c
- - _rl_trace and related functions are now only compiled in if DEBUG
- is defined
-
-lib/readline/Makefile.in
- - substitute @DEBUG@ and pass -DDEBUG, if necessary, to compilation
- in LOCAL_CFLAGS
-
- 3/21
- ----
-parse.y
- - shell_getc: when checking whether or not to reallocate
- shell_input_line to add trailing newline, don't try to subtract from
- shell_input_line_size. size_t is unsigned, so if its value is less
- than 3 (like, say, 2), size-3 is a very large number and the string
- will not be reallocated. Use len+3 > size instead of len > size-3.
- Fixes bug reported in
- https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1295467
-
- 3/27
- ----
-lib/readline/display.c
- - _rl_clean_up_for_exit: don't bother to call _rl_move_vert to whatever
- readline thinks the last displayed line is if it's 0. Two reasons: a
- minor optimization, and it protects against unwanted moving if this
- function is called twice, as it is when ^C is pressed. Fixes bug
- reported by Egmont Koblinger <egmont@gmail.com>
-
- 3/28
- ----
-bashline.c
- - invalid_completion: new function, used to identify attempts to
- complete words that are syntax errors
- - attempt_shell_completion: if invalid_completion returns true for a
- word in a command position, punt on all completions. Fixes cosmetic
- issue reported by Uwe Storbeck <uwe@ibr.ch>
- - attempt_shell_completion: add clause so that in_command_position
- remains set to 1 for an empty word following a command separator like
- (, &, or |
-
-lib/readline/kill.c
- - rl_yank, rl_yank_nth_arg_internal: don't return -1 from bindable
- functions, return 1 instead
-
-lib/readline/text.c
- - rl_rubout, _rl_rubout_char, rl_delete, rl_change_case,
- rl_transpose_chars, rl_transpose_words, _rl_set_mark_at_pos,
- rl_exchange_point_and_mark, _rl_insert_next, _rl_char_search,
- _rl_char_search_internal:
- don't return -1 from bindable functions, return 1 instead
-
-lib/readline/vi_mode.c
- - rl_vi_end_word, rl_vi_rubout, rl_vi_delete, rl_vi_char_search,
- rl_vi_match, _rl_vi_set_mark, _rl_vi_goto_mark:
- don't return -1 from bindable functions, return 1 instead
-
-lib/readline/macro.c
- - rl_start_kbd_macro, rl_end_kbd_macro:
- don't return -1 from bindable functions, return 1 instead
-
-builtins/setattr.def
- - set_var_attribute: honor setting of no_invisible_vars when setting
- att_invisible on a variable
- - include "../flags.h" for no_invisible_vars
-
-builtins/declare.def
- - declare_internal: honor setting of no_invisible_vars when setting
- att_invisible on a variable
- - include "../flags.h" for no_invisible_vars
-
-Makefile.in,builtins/Makefile.in
- - make sure declare.o and setattr.o depend on flags.h
-
-execute_cmd.c
- - decpoint: new function, returns locale's decimal point or `.' default
- - mkfmt: use decpoint() to get decimal point instead of unconditionally
- using `.'. Fixes bug reported by Andrey Tataranovich
- <tataranovich@gmail.com> in debian bug 741669
-
- 4/10
- ----
-lib/readline/rltypedefs.h
- - add back old Function/VFunction/etc typedefs, since other packages
- (python, samba) use them. Mark as deprecated using gcc and clang
- attributes. Report and fix from Max Horn <max@quendi.de>
-
- 4/14
- ----
-jobs.c
- - run_sigchld_trap: unwind-protect value of this_shell_builtin, since
- it matters in some cases whether or not we are running `wait' or
- `eval'. Fixes bug reported by Eduardo A. Bustamante López
- <dualbus@gmail.com>
-
- 4/18
- ----
-shell.h
- - sh_parser_state_t: add `need_here_doc' flags member, since
- xparse_dolparen (via parse_command) sets it to 0
-
-parse.y
- - gather_here_documents: make sure need_here_doc is > 0, since we
- don't want to just decrement it forever if it ends up < 0. Partial
- fix for bug reported by Jared Yanovich <slovichon@gmail.com>
- - {save,restore}_parser_state: save and restore need_here_doc flag.
- Rest of fix for bug reported by Jared Yanovich <slovichon@gmail.com>
-
- 4/19
- ----
-subst.c
- - cond_expand_word: since we are not supposed to be performing word
- splitting here, set expand_no_split_dollar_star to 1 in addition to
- setting W_NOSPLIT2
- - expand_word_internal: if we have a case where we have an unquoted
- $@ but we are in a case where we don't want to split (W_NOSPLIT2),
- make sure we return a list consisting of a single word with the
- arguments separated by spaces and don't do word splitting. Fixes
- bug reported by Greg Wooledge <wooledg@eeg.ccf.org> from an IRC
- discussion
-
-builtins/hash.def
- - print_portable_hash_info: single-quote pathnames and hashed filenames
- that contain shell metacharacters. Fixes bug reported by
- <g1pi@libero.it> in debian bash bug #739853
-
- 4/20
- ----
-lib/readline/display.c
- - When using horizontal scrolling, the redisplay code erases too much
- of the line containing successful results, so make sure we only
- erase to the end of the line after making sure we move the cursor
- to the end. Fixes bug reported by <Trond.Endrestol@ximalas.info>
-
- 4/23
- ----
-{bashhist,bashline}.c
-builtins{bind,help,type}.def
-lib/glob/glob.c, lib/intl/{loadmsgcat,localealias}.c,lib/sh/mktime.c
- - fixes to memory leaks uncovered by coverity scan
-
- 4/24
- ----
-{bashhist,subst,redir,assoc,jobs,array,trap}.c
-lib/intl/l10flist.c
-builtins/complete.def
- - fixes to memory leaks and other resource usage problems uncovered by
- coverity scan
-
-redir.c
- - do_redirection_internal: if dup2 fails (presumably because of a
- resource limit), close the file descriptor we opened before returning
- error
-
- 4/25
- ----
-config-top.h
- - DEFAULT_BASHRC: new define with the name of the default shell
- startup file
-
-bashline.c
- - bash_directory_completion_matches: don't dequote the directory name.
- If rl_completion_found_quote is non-zero, readline will dequote the
- filename itself. Fixes bug reported by Clark Wang
- <dearvoid@gmail.com>
-
- 4/27
- ----
-subst.c
- - parameter_brace_expand_rhs: if parameter_brace_find_indir returns
- NULL or "", or if it returns something that is not a valid identifier,
- report an error and return &expand_wdesc_error so the error can
- propagate up. Fixes bug reported by Andre Holzhey
- <andre.holzhey@gmx.de>
-
- 4/29
- ----
-subst.c
- - parameter_brace_substring: don't short-circuit right away if the
- value is NULL but we are looking at the positional parameters. Part
- of fix for bug reported by Pierre Gaston <pierre.gaston@gmail.com>
- - pos_params: if there are no positional parameters, only short-circuit
- if we are looking for $1 and above. Rest of fix for bug reported
- by Pierre Gaston <pierre.gaston@gmail.com>
-
-subst.h
- - SD_NOPROCSUB: new flag for skip_to_delim, means to not allow any
- process subsitutions (should not have overloaded SD_NOSKIPCMD)
-
-subst.c
- - skip_to_delim: honor SD_NOPROCSUB flag
-
-make_cmd.c
- - make_arith_for_expr: set W_NOPROCSUB flag in the created word
- - make_arith_for_command: set SD_NOPROCSUB in the flags argument to
- skip_to_delim so we don't treat <( or >( as a process substitution
- (we won't evaluate them in eval_arith_for_expr anyway). Fixes
- bug reported by Pierre Gaston <pierre.gaston@gmail.com>
-
- 5/1
- ---
-lib/glob/gmisc.c
- - glob_dirscan: new function, takes a pattern and a directory separator
- argument and advances the pattern to the last occurrence of the
- separator. Like strrchr, but understands extended glob patterns and
- uses glob_patscan to skip over them
-
-lib/glob/glob.c
- - extglob_skipname: if the extended globbing pattern is invalid, don't
- skip the name
- - glob_filename: if there is a slash in the pattern to be matched, and
- extglob is enabled, use glob_dirscan to find the real last occurrence
- of `/' to avoid being confused by slashes in extglob patterns. Fix
- for bug reported by Pierre Gaston <pierre.gaston@gmail.com>
-
- 5/6
- ---
-variables.c
- - make_local_variable: only set the att_invisible attribute if
- no_invisible_vars isn't set
- - find_variable_for_assignment: new function, intended to be called by
- code that eventually wants to assign a value to the variable; will not
- skip invisible variables; currently identical to find_variable
- - find_variable_no_invisible: new function, finds the first visible
- instance of variable with a given name in the variable context chain;
- eventually will be used to replace find_variable; separate right now
- for testing
-
-variables.h
- - find_variable_for_assignment: extern declaration
- - find_variable_no_invisible: extern declaration
-
- 5/7
- ---
-variables.c
- - make_local_variable: don't clear `invisible' attribute if we are
- returning an existing local variable at the right context. Let the
- upper layers do that. Fixes bug reported by Dan Douglas
- <ormaaj@gmail.com>
-
- 5/8
- ---
-lib/readline/input.c
- - rl_getc: call RL_CHECK_SIGNALS if a read(2) is interrupted (-1/EINTR)
- by SIGALRM or SIGVTALRM (placeholder for non-keyboard-generated
- signals of interest)
-
-builtins/read.def
- - edit_line: call bashline_set_event_hook and
- bashline_reset_event_hook around call to readline(), so the right
- signal handling happens
- - read_builtin: make sure we add an unwind_protect call to
- bashline_reset_event_hook. These changes fix bug reported in
- https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1317476
-
-bashline.c
- - bash_event_hook: make sure we clean up the readline state by calling
- rl_cleanup_after_signal if sigalrm_seen is non-zero. The read builtin
- sets this when it times out
-
- 5/12
- ----
-doc/{bash.1,bashref.texi}
- - clarify language to make it clear that changing attributes of a
- nameref variable (e.g., export), actually changes the attributes of
- the referenced variable. Fixes omission noted by Jeff Haemer
- <jeffrey.haemer@gmail.com>
-
-arrayfunc.c
- - bind_array_var_internal: make sure ENTRY no longer has invisible
- attribute before returning. Fixes bug reported by Geir Hauge
- <geir.hauge@gmail.com>
-
- 5/22
- ----
-execute_cmd.c
- - shell_execve: if execve fails and we return 127 or 126, make sure to
- set last_command_exit_value if a call to file_error or report_error
- causes the shell to exit. This ensures that the shell exits with
- the right value.
-
- 6/6
- ---
-shell.c
- - drop_priv_mode: print an error message on setuid() failure, optionally
- exit if errno == EAGAIN, as it can be on Linux when RLIMIT_NPROC for
- the target user is exceeded.
-
-config-top.h
- - EXIT_ON_SETUID_FAILURE: new settable define, will cause the shell to
- exit if setuid fails with errno == EAGAIN
-
- 6/10
- ----
-parse.y
- - time_command_acceptable: fix so time is accepted everywhere the
- grammar is looking for a `compound_list'. Fixes bug reported by
- Dale Worley <worley@alum.mit.edu>
-
- 6/12
- ----
-subst.c
- - clear_fifo_list: new function, clears FDs associated with open pipes
- in current FIFO list without closing the file descriptors. Can
- possibly be used when shell_execve fails and the shell jumps back
- to top_level and we don't want the shell to close the open FIFOs
- each time through the read-execute loop. Bug reported by Harald
- Koenig <koenig@tat.physik.uni-tuebingen.de>
-
-
- 6/16
- ----
-builtins/shopt.def
- - compat42: make sure the `compat42' option sets the correct variable
- for compatibility level. Fixes bug reported by Ondrej Oprala
- <ooprala@redhat.com>
-
-support/bashbug.sh
- - fix typo when echoing $USAGE. Report from Shantanu Kulkarni
- <djbware@shantanukulkarni.org>
-
-execute_cmd.c
- - shell_execve: before longjmp back to subshell_top_level, clear out the
- FIFO fd list by calling clear_fifo_list so the FDs (which we inherited
- from our parent) aren't closed every time through the read-eval loop.
- Fix for bug reported by Harald Koenig <koenig@tat.physik.uni-tuebingen.de>
-
- 6/18
- ----
-subst.c
- - extract_process_subst: add additional argument: xflags, allow callers to
- pass flags like extract_command_subst
- - extract_process_subst: call xparse_dolparen like command substitution
- to avoid problems when parsing commands constructs with embedded open
- parens. Fixes bug reported by Tim Friske <me@timfriske.com>
-
-subst.h
- - extract_process_subst: modified prototype for extern declaration
-
- 6/19
- ----
-execute_cmd.c
- - execute_pipeline: if running with lastpipe enabled, make sure that we
- check whether or not the job id is valid using INVALID_JOB before
- calling job_exit_status. the jobs list can get frozen and unfrozen in
- the presence of nested pipelines and loops and wait_for can clear a
- job table entry. Fixes bug reported by <scorp.dev.null@gmail.com>
-
-jobs.c
- - freeze_jobs_list: now returns old value of jobs_list_frozen; unused at
- current time
-
-jobs.h
- - freeze_jobs_list: change return value
-
- 6/20
- ----
-lib/glob/smatch.c
- - MEMCHR: single-byte and wide character defines (memchr/wmemchr)
-
-lib/glob/sm_loop.c
- - GMATCH: when the wildcards are the last element of the pattern, make
- sure they do not match a string containing a `/' if FNM_PATHNAME is
- set in FLAGS
- - GMATCH: when recursively calling GMATCH after we see a `*', don't
- try to consume the rest of the pattern with `*' if FNM_PATHNAME is
- set in FLAGS, just consume up to the next slash and then see whether
- or not the rest of the pattern matches. Fixes bug reported by Ian
- Kelling <ian@iankelling.org>
- - GMATCH: when processing `*' in the pattern, after skipping consecutive
- wildcards, if we hit a literal `/' in the pattern and we're looking
- for a pathname, skip characters in the string until we find a `/'
- (no slash means the match fails), and try to match the rest of the
- pattern against the portion of the string after the next `/'. Picked
- up from gnulib/glibc
-
-pathexp.c
- - split_ignorespec: since split_ignorespec gets globbing patterns,
- make sure we call skip_to_delim with the SD_GLOB flag so delimiters
- that occur within bracket expressions don't delimit the pattern.
- Fixes problem with [[:digit:]] in GLOBIGNORE reported by Ian Kelling
- <ian@iankelling.org>
-
-unwind_prot.c
- - unwind_protect_tag_on_stack: new function, returns 1 if unwind-protect
- frame corresponding to `tag' argument is on unwind-protect stack
-
-unwind_prot.h
- - unwind_protect_tag_on_stack: extern declaration
-
- 6/30
- ----
-lib/readline/misc.c
- - _rl_revert_all_lines: set entry->data to 0 after assigning it to
- rl_undo_list to avoid pointer aliasing problems that would result
- in entry->line being freed by an undo. The subsequent free would
- be a double free. Report and fix from Jared Yanovich
- <slovichon@gmail.com>
-
-subst.c
- - command_substitute: other shells do not appear to inherit the -v
- option when reading and executing command substitutions. Reported
- by Ondrej Oprala <ooprala@redhat.com>
-
- 7/1
- ---
-config-top.h
- - CHECKHASH_DEFAULT: new define that supplies the default value for
- check_hashed_filenames (`checkhash' shopt option); still 0 by default
-
-findcmd.c
- - check_hashed_filenames: initialize using CHECKHASH_DEFAULT
-
-lib/readline/histexpand.c
- - history_expand: double quotes can inhibit recognition of the history
- comment character if history_quotes_inhibit_expansion is non-zero
-
-lib/readline/doc/{history.3,hstech.texi}
- - history_quotes_inhibit_expansion: expand definition to note that it
- inhibits scanning for the history comment character as well; correct
- typo to make it clear that it only works on double-quoted strings
-
-lib/sh/zgetline.c
- - add new fourth argument: DELIM, allows delimiter to be something
- other than newline (if DELIM != '\n', UNBUFFERED_READ should be
- non-zero)
- - UNBUFFERED_READ is now fifth argument
- - check character against DELIM rather than strictly newline
-
-externs.h
- - zgetline: change function prototype for extern declaration
-
-builtins/mapfile.def
- - mapfile: change calling sequence for zgetline calls
- - mapfile_builtin: new -d option: DELIM, like in read builtin
- - mapfile_builtin: pass `delim' to mapfile() as new argument; default
- to '\n' unless -d option supplied
- - mapfile: take new DELIM argument, pass to zgetline
- - mapfile: if DELIM != '\n', set unbuffered_read to 1
-
-doc/{bash.1,bashref.texi}
- - mapfile: document new `-d DELIM' option
-
- 7/5
- ---
-lib/readline/histfile.c
- - history_truncate_file: if there is an error writing the truncated
- history list back to the history file, use the same strategy as
- history_do_write: create a backup file, rename the history file to
- the backup file, and restore the original history file from the
- backup file name if the write or the close fails. Suggestion from
- Chen Gang <gang.chen.5i5j@gmail.com> to bug-readline
-
-execute_cmd.c
- - evalnest, evalnest_max: new variables establishing maximum number of
- recursive `eval' calls; current max is 4096
- - execute_builtin: unwind-protect value of evalnest around calls to
- eval builtin. Suggested by Oliver Morais <oliver.morais@gmail.com>
- - {initialize_subshell,execute_subshell_builtin_or_function}: reset
- evalnest to 0 in a subshell
-
-builtins/setattr.def
- - show_name_attributes: show a variable's attributes even if it's
- invisible (don't show any value since it has none). This means that
- declare -p var will display VAR's attributes even when var marked
- as invisible. Feature request from Peggy Russell
- <prusselltechgroup@gmail.com>
- - show_var_attributes: don't print assignment if array or assoc
- attribute is set but variable marked as invisible
-
-tests/array.right
- - special note: changed all declare -a output tests because the shell
- will no longer print out values for invisible array variables. This
- is a change, but one for correctness:
-
- declare -a foo='()'
- and
- declare -a foo
- are not equivalent
-
- 7/22
- ----
-subst.c
- - parameter_brace_expand: after calling parameter_brace_expand_indir,
- turn off the W_ARRAYIND flag in the word it returns, because there
- is no way for it to return the index that should be used, and the
- rest of the function assumes that IND is valid if W_ARRAYIND is set.
- Fixes bug reported by Corentin Peuvrel <cpeuvrel@pom-monitoring.com>
-
- 8/2
- ---
-parse.y
- - read_token_word: if we read a character that will end a command
- substitution, don't skip over quoted newlines when we read an
- additional character to figure out whether it's a two-character
- token. This lets the higher layers deal with quoted newlines after
- the command substitution. Fixes bug reported by EmanueL Czirai
- <amanual@riseup.net>
-
- 8/11
- ----
-execute_cmd.c
- - execute_pipeline: check whether lastpipe_jid corresponds to a valid
- job before calling append_process, for the same reason as fix from
- 6/19. Fixes bug reported by <lolilolicon@gmail.com>
-
- 8/12
- ----
-lib/sh/unicode.c
- - stub_charset: use strncpy instead of strcpy because we are copying
- into a local fixed-length buffer. Fixes vulnerability reported by
- <romerox.adrian@gmail.com>
-
-execute_cmd.c
- - execute_pipeline: if we don't call append_process, call
- wait_for_single_pid to get the status of `lastpid', since that will
- check the status of already-reaped processes. Fixes spurious error
- message about non-existent process from fix of 8/11
-
- 8/15
- ----
-jobs.c
- - running_in_background: new variable, keeps track of whether or not we
- are running in the background (not perfect yet)
- - initialize_job_control: even if we are not turning on job control,
- get the terminal pgrp so we can use it later
- - {set_job_control,initialize_job_control}: set running_in_background
- to 1 if terminal pgrp != shell pgrp
- - {stop_pipeline,make_child,wait_for}: if we are running in the
- background, don't mess with the terminal's process group; assume that
- the parent shell will do that. Fixes bug reprted by Greg Wooledge
- <wooledg@eeg.ccf.org>
-
-shell.c
- - shell_reinitialize: reset running_in_background back to 0
-
- 8/24
- ----
-execute_cmd.c
- - {execute_connection,execute_command_internal}: make sure that
- asynchronous commands always set $? to 0 and are not affected by the
- command's exit status being inverted using `!'. Fixes bug reported
- by Vincent Lefevre <vincent@vinc17.net>
-
-lib/readline/display.c
- - rl_message: call vsnprintf with full msg_bufsiz, since it counts
- one fewer than the buffer length passed as an argument. Bug report
- and fix from Dylan Cali <calid1984@gmail.com>
-
- 8/26
- ----
-builtins/evalstring.c
- - evalstring: if CURRENT_TOKEN == yacc_EOF, reset it to newline. This
- is instead of calling reset_parser(); that might still be needed.
- Fixes bug with eval and a subsequent statement ending with EOF
- reported by <jim.avera@gmail.org>
-
-pcomplete.c
- - filter_stringlist: when extglob is on, a leading ! in the filter
- pattern should be left alone when it introduces a !(pat) pattern;
- otherwise it messes up the pattern. Fixes bug reported by David
- Korn <dgkorn@gmail.com>
-
- 8/27
- ----
-doc/{bash.1,bashref.texi}
- - clarify the behavior of bash when given the -c option, since $0 is
- technically not a positional parameter. Bug reported by Stephane
- Chazelas <stephane.chazelas@gmail.com>
-
- 8/28
- ----
-lib/readline/history.c
- - add_history: use history_max_entries (if history is stifled) or
- DEFAULT_HISTORY_INITIAL_SIZE if not (new define, defaults to 502)
- to size the initial allocation of the history array. Assumption
- is that this will reduce the number of allocations
-
- 8/29
- ----
-execute_command.c:
- - sourcenest, sourcenest_max: new variables used to track level of
- sourced files and (maybe) one day catch infinite source recursion
- - execute_builtin: if current source level exceeds sourcenest_max,
- trigger an error and jump back to the top level
- - {initialize_subshell,execute_subshell_builtin_or_function}: reset
- sourcenest to 0 in a subshell
-
- 9/2
- ---
-variables.c
- - bind_variable: if a nameref expands to an array reference, make
- sure that assign_array_element gets called (maybe even
- recursively) instead of bind_variable_internal, so invalid variable
- names (like arr[0]) don't get created. Fixes bug reported by
- <lolilolicon@gmail.com>
-
- 9/3
- ---
-execute_cmd.c
- - evalnest_max,sourcenest_max: initialize from EVALNEST_MAX and
- SOURCENEST_MAX, respectively. Feature suggested by
- <bogun.dmitriy@gmail.com>
-
-config-top.h
- - define EVALNEST_MAX and SOURCENEST_MAX to 0
-
- 9/6
- ---
-bashline.c
- - find_cmd_start: fix to (crudely) deal with >| token; even though
- skip_to_delim finds `|' as a delimiter, we call it again and use
- what the second call finds. Fixes bug reported by Dan Jacobson
- <jidanni@jidanni.org>
-
-findcmd.c
- - find_in_path_element: if in posix mode, do not expand a literal
- tilde in a $PATH element
-
-doc/bashref.texi
- - add change to tilde expansion in $PATH elements to posix mode
- description
-
-builtins/common.h
- - ISHELP: new define for builtins that do their own option parsing
- and don't use internal_getopt(); checks whether argument is --help
- - CHECK_HELPOPT: convenience define to help builtins that do their
- own option parsing to check for --help with one line of code
- - CASE_HELPOPT: convenience define to help builtins that use
- internal_getopt() check for --help with one line of code
-
-builtins/help.def
- - builtin_help: new function, prints out --help output for current
- builtin
-
-builtins/{kill,let,pushd}.def
- - add CHECK_HELPOPT to builtins that use ISOPTION; call builtin_help
- and return EX_USAGE (kill/let/pushd/popd/dirs)
-
-builtins/{caller,fg_bg}.def
- - use CHECK_HELPOPT to recognize --help, since these builtins perform
- checks that can cause them to return before calling no_options
- (caller/fg/bg)
-
-builtins/{exit,return}.def
- - use CHECK_HELPOPT to recognize --help before calling get_exitstat()
- (return/exit/logout)
-
-builtins/{break,shift}.def
- - use CHECK_HELPOPT to recognize --help before any other checks
- (break/continue/shift)
-
-builtins/bashgetopt.h
- - GETOPT_EOF: convenience define
- - GETOPT_HELP: new define, to indicate internal_getopt saw --help
-
-builtins/bashgetopt.c
- - internal_getopt: return GETOPT_HELP for --help
-
-builtins/common.c
- - no_options: recognize --help, call builtin_help and return 2
- (builtin/eval/source/./times)
-
-builtins/command.def
- - use CASE_HELPOPT() to handle --help after calling internal_getopt()
- (command)
-
-builtins/{colon,echo,test}.def
- - do not recognize --help (:/true/false/echo/test)
-
- 9/8
- ---
-sig.c
- - termsig_sighandler: if readline is active now, set the bashline event
- hook. Old code just set it for interactive shells. Part of fix for
- bug reported by <mickael9@gmail.com>
-
-bashline.c
- - bash_event_hook: call rl_cleanup_after_signal if terminating_signal
- is non-zero, since check_signals_and_traps() will cause the shell to
- exit if it is and we want to clean up the readline state first. Rest
- of fix for bug reported by <mickael9@gmail.com>
-
- 9/9
- ---
-jobs.c
- - waitchld: when running the wait builtin in posix mode, with a trap set
- on SIGCHLD, use queue_sigchld_trap instead of trap_handler (SIGCHLD),
- otherwise you will lose SIGCHLDs when children_exited > 1. Fixes bug
- reported by <crispusfairbairn@gmail.com>
-
-builtins/read.def
- - read_builtin: if we are changing the tty settings, call
- initialize_terminating_signals so we have a chance to catch all
- terminating signals and potentially clean up the terminal before
- exiting
- - read_builtin: tty_modified: new variable, set to 1 if we change the
- terminal attributes and have to call ttyrestore() to restore them
- - if one of the `reads' returns -1/EINTR due to a terminating signal,
- and we have modified the terminal, call ttyrestore before calling
- CHECK_TERMSIG
- - ttyrestore: set tty_modified to 0 when called
-
- 9/10
- ----
-builtins/read.def
- - termsave: now global to file so other functions can use it
- - read_tty_cleanup: if tty_modified is non-zero, call ttycleanup to restore
- old terminal settings and turn off tty_modified
-
-sig.c
- - termsig_handler: call read_tty_cleanup if currently executing read
- builtin; it does the right thing. Final piece of fix for bug reported
- by Jan Rome <jan.rome@gmail.com>
-
- 9/11
- ----
-general.c
- - printable_filename: general function to return a printable representation
- of a string (presumed to be a filename)
-
-general.h
- - extern declaration for printable_filename
-
-execute_cmd.c
- - execute_disk_command: use printable_filename
-
-builtins/{bind,cd,enable,hash,source}.def
- - use printable_filename as appropriate when printing error messages.
- From a suggestion by Vincent Lefevre <vincent@vinc17.net>
-
-builtins/bind.def
- - use CASE_HELPOPT() to handle --help after calling internal_getopt()
- (bind)
-
- 9/12
- ----
-builtins/common.h
- - SEVAL_FUNCDEF: new flag for parse_and_execute; it means that we only
- accept a single function definition command, as when we are importing
- functions from the environment
- - SEVAL_ONECMD: new flag for parse_and_execute; for future use
-
-builtins/evalstring.c
- - parse_and_execute: if the SEVAL_FUNCDEF flag is set, disallow anything
- but a function definition command
-
-variables.c
- - initialize_shell_variables: don't allow functions with invalid names
- to be imported from the environment, even though we still allow them
- to be defined
- - initialize_shell_variables: when importing function definitions from
- the environment, call parse_and_execute with the SEVAL_FUNCDEF flag
- to force the command to be just a function definition
-
-subst.c
- - param_expand: when expanding a $name variable expansion, make sure that
- the variable is visible and set before following the nameref chain
- - param_expand: when expanding a $name variable expansion and following the
- nameref chain, make sure the resulting variable is visible and set
- before using it
-
- 9/13
- ----
-variables.c
- - initialize_shell_variables: when importing function definitions from
- environment, use SEVAL_ONECMD flag for parse_and_execute. Part of
- CVE-2014-6271
-
-builtins/evalstring.c
- - parse_and_execute: if SEVAL_ONECMD flag set, return immediately after
- calling execute_command_internal. Final piece for fix for bug
- reported by Stephane Chazelas <stephane.chazelas@gmail.com>. Part of
- CVE-2014-6271
-
- 9/24
- ----
-parse.y
- - reset_parser: reset eol_ungetc_lookahead to 0 here, since we don't want
- shell_getc returning it on the next call. Fixes problem reported by
- Tavis Ormandy <taviso@cmpxchg8b.com> and Michal Zalewski
- <lcamtuf@coredump.cx>. Potentially part of CVE-2014-6271; fix for
- CVE-2014-7169
-
- 9/25
- ----
-parse.y
- - push_heredoc: new function, pushes a here-doc redirection onto
- redir_stack handling overflow of redir_stack. Exits on overflow.
- Original fix from Florian Weimer <fweimer@redhat.com>. Fix for
- CVE-2014-7186
- - change straight assignments to redir_stack to call push_redir
- - add one to size of word_lineno stack to avoid off-by-one error
- below in read_token_word. Overflow just results in line numbers
- being wrong. Fix for CVE-2014-7187
-
- 9/27
- ----
-{execute_cmd,trap}.c
- - changes to make minimal-config builds work again, mostly missing
- #ifdefs for optional features
-
-builtins/common.c
- - builtin_help: dummy version to be included if HELP_BUILTIN not
- defined, for minimal-config builds
-
-variables.c
- - initialize_shell_variables: incorporated patches from Florian
- Weimer <fweimer@redhat.com> to change the strings bash looks
- for when importing shell functions from the environment. It
- adds a prefix (BASH_FUNC_) and a suffix (%%) to the name to
- mark it as having been created by bash as an exported function.
- Fix for remote attacks part of CVE-2014-6271 and CVE-2014-7169
- - mk_env_string: takes new argument, indicating whether we are
- constructing a function
- - mk_env_string: encodes function names as described above, so
- initialize_shell_variables can find them
-
- 9/28
- ----
-copy_cmd.c
- - copy_redirects: before calling savestring on here_doc_eof, make
- sure it's not NULL (it could have been the result of a here
- document delimited by EOF or EOS). Fixes bug reported by
- Michal Zalewski <lcamtuf@coredump.cx>. Fix for CVE-2014-6277
-
-make_cmd.c
- - make_redirection: initialize here_doc_eof member to NULL. Rest of
- fix for CVE-2014-6277
-
- 9/29
- ----
-parse.y
- - current_input_line_state: return a sh_input_line_state_t containing
- the current shell_input_line and its index and size variables
-
-shell.h
- - current_input_line_state: extern declaration
-
-builtins/evalstring.c
- - parse_and_execute: call reset_parser() before returning if
- SEVAL_ONECMD set. Fixes bug reported by Michal Zalewski
- <lcamtuf@coredump.cx> and designated CVE-2014-6278
- - parse_and_execute: if we parse a function definition when
- SEVAL_FUNCDEF is set, but don't consume the entire passed string,
- throw an error, reset the parser, and return. Part of fix for
- CVE-2014-6278
- - parse_and_execute: if parsing the shell function definition when
- SEVAL_FUNCDEF is set transforms the function name (e.g., if it
- begins with a newline or begins or ends with whitespace), throw
- an error, reset the parser, and return. Fixes bug reported by
- Eric Kobrin <ekobrin@akamai.com>
-
- 10/2
- ----
-jobs.c
- - bgp_prune: don't do anything if bgpids.npid == 0 or bgpids.list == NULL.
- This can happen if something gets run before the job control framework
- is initialized. Bug report from <mancha1@zoho.com>
-
- 10/3
- ----
-parse.y
- - xparse_dolparen: don't set token_to_read to newline after calling
- parse_string() and cleaning up when the shell is not interactive. This
- makes the parser thing it's ok to read new commands even if it's not in
- a state where that should be possible. Underlying fix for bug reported
- by Michal Zalewski <lcamtuf@coredump.cx> and designated CVE-6278
- - parser_remaining_input: new function, returns the portion of
- shell_input_line that hasn't yet been read
- - current_input_line_state: removed
-
-shell.h
- - parser_remaining_input: extern declaration
- - current_input_line_state: removed
-
-builtins/evalstring.c
- - parse_and_execute: change code that checks whether parse_command has
- consumed the entire passed string when SEVAL_FUNCDEF is used to use
- parser_remaining_input instead of messing around with (new)
- current_input_line_state. Part of fix for CVE-2014-6278
-
-variables.c
- - initialize_shell_variables: if we don't call parse_and_execute, free the
- temporary string, since parse_and_execute won't. Report and fix from
- Eric Kobrin <ekobrin@akamai.com>
-
- 10/4
- ----
-print_cmd.c
- - print_function_def: when in posix mode, print shell function
- definitions as posix specifies them, without the leading
- `function' keyword
-
-general.c
- - exportable_function_name: return 1 if the passed string can be
- added to the environment as an exported function name. Currently
- prohibits function names containing `/' and `=' from being
- exported
-
-general.h
- - exportable_function_name: extern declaration
-
-builtins/setattr.def
- - set_or_show_attributes: if exporting a function with export -f,
- call exportable_function_name to determine whether the function
- should be exported; don't export function if it returns 0
-
- 10/7
- ----
-builtins/setattr.def
- - set_or_show_attributes: don't show identifiers that are invisible
- and imported from the environment, since that combination of
- attributes means that the imported variable is not a valid shell
- identifier. Report from Stephane Chazelas <stephane.chazelas@gmail.com>
-
- 10/8
- ----
-shell.c
- - shell_initialize: set new variable should_be_restricted, which
- says whether or not the shell will be a restricted one based on the
- shell name; use in calls to initialize_shell_variables (to inhibit
- importing shell functions) and initialize_shell_options (to inhibit
- parsing $SHELLOPTS) and initialize_bashopts (to inhibit parsing
- $BASHOPTS). Report from <paulfm@umn.edu>
-
- 10/12
- -----
-execute_cmd.c
- - execute_function: unwind-protect loop_level, set loop_level to 0
- when entering a function so break and continue in functions don't
- break loops running outside of the function. Fix picked up from
- dash via Herbert Xu <herbert@gnodor.apana.org.au>
-
- 10/13
- -----
-doc/Makefile.in
- - bashref.pdf: create using texi2dvi --pdf rather than postprocessing the
- dvi file, so we have PDF bookmarks and links. Fix from
- Siep Kroonenberg <siepo@cybercomm.nl>
-
- 10/14
- -----
-subst.h
- - Q_ARITH: new quoting flag. Semantics are per Posix's spec for arithmetic
- expansion: act as if string is quoted, but don't treat double quotes
- specially (in this case, they will be removed by quote removal)
- - Q_ARRAYSUB: new quoting flag, indicates we are expanding an indexed array
- subscript
-
-subst.c
- - expand_arith_string: if we are not expanding the string, but we saw a quote
- with Q_ARITH specified as one of quoting flags, perform quote removal even
- if Q_DOUBLE_QUOTES is specified
- - param_expand: change calls to expand_arith_string for $[ and $(( cases to
- specify Q_ARITH. Now $(( "$x" )) and $(( "x" )) work if x has a value that
- evaluates to a valid number, as Posix specifies
- - expand_word_internal: add test for quoted&Q_ARITH to the tilde case, so we
- continue to perform tilde expansion in arithmetic contexts
- - expand_word_internal: if quoted&Q_ARITH, continue processing when we see a
- `"', acting as if the double quote isn't present (already Q_DOUBLE_QUOTED)
-
-arrayfunc.c
- - array_expand_index: pass Q_DOUBLE_QUOTED|Q_ARITH|Q_ARRAYSUB as quoted argument
- in call to expand_arith_string. This inhibits word splitting
- (Q_DOUBLE_QUOTED) while discarding double quotes (Q_ARITH), identical to the
- quote flags passed while expanding $(( )) and $[ ]. Q_ARRAYSUB reserved for
- future use. Fixes problem reported by Stephane Chazelas
- <stephane.chazelas@gmail.com>
-
- 10/16
- -----
-subst.c
- - parameter_brace_expand_word: if the PF_ASSIGNRHS flag is set and we
- are expanding what looks like an array subscripted with @ or *,
- make sure the variable we're expanding is actually an array before
- we add Q_DOUBLE_QUOTES to the flags. If we don't, things like
- scalar[@] will remain quoted. Fixes ubuntu bug 1381567
- https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1381567
-
- 10/17
- -----
-{jobs,nojobs}.c
- - get_original_tty_job_signals: get original signal dispostions for
- SIGTSTP, SIGTTIN, SIGTTOU before we start manipulating them in
- make_child
- - default_tty_job_signals: make sure we set SIGTSTP, SIGTTIN, or
- SIGTTOU to SIG_IGN if they were ignored at shell startup instead of
- unconditionally setting them to SIG_DFL. Fixes bug reported by
- idallen@idallen.ca
-
-jobs.h
- - get_original_tty_job_signals: extern declaration
-
-trap.c
- - initialize_traps: add call to get_original_tty_job_signals
-
- 10/22
- -----
-subst.c
- - expand_string_for_rhs: when expanding in this context (rhs of a word
- expansion or pattern removal), we don't perform word splitting, so
- we don't want to split $* if IFS is empty. Fixes bug reported by
- Stephane Chazelas <stephane.chazelas@gmail.com>
-
- 10/23
- -----
-subst.c
- - param_expand: when expanding $* in a pattern context where the
- expansion is quoted (Q_PATQUOTE), don't quote the expansion --
- the outer quotes don't make the characters in the expansion of
- $* special. Posix interp 221. Reported by Stephane Chazelas
- <stephane.chazelas@gmail.com>
-
- 10/28
- -----
-lib/readline/bind.c
- - enable-bracketed-paste: new bindable variable, enables support for
- a terminal's `bracketed paste mode'. Code contributed by
- Daniel Colascione <dancol@dancol.org>
-
-doc/bash.1,lib/readline/doc/{readline.3,rluser.texi}
- - enable-bracketed-paste: add description
-
-lib/readline/{readline.c,rlprivate.h}
- - _rl_enable_bracketed_paste: declarations
- - #defines for use by bracketed paste implementation
-
-lib/readline/rltty.c
- - rl_prep_terminal: send BRACK_PASTE_INIT string to terminal if we
- are supposed to enable bracketed-paste mode; change terminal_prepped
- to indicate we sent that string and need to clean up
- - rl_deprep_terminal: if terminal_prepped indicates we sent the
- bracketed-paste mode init string to the terminal, send the cleanup
- string before restoring the terminal modes
-
-lib/readline/kill.c
- - rl_bracketed_paste_begin: function to read bracketed paste until
- BRACK_PASTE_SUFF; discard the suffix, and insert the rest of the
- paste as a single (undoable) object. Bound to BRACK_PASTE_PREF
-
-lib/readline/funmap.c
- - bracketed-paste-begin: new bindable command, executes
- rl_bracketed_paste_begin
-
-lib/readline/readline.c
- - bind_bracketed_paste_prefix: new function, sets up to recognize
- the bracketed paste prefix sequence (BRACK_PASTE_PREF) in emacs
- keymap and vi insertion keymap
- - readline_initialize_everything: call bind_bracketed_paste_prefix
-
- 11/1
- ----
-builtins/ulimit.def
- - RLIMIT_POSIXLOCKS: now synonym for RLIMIT_LOCKS
- - -k: new option: RLIMIT_KQUEUES, max kqueues allocated for this
- process
- - -P: new option: RLIMIT_NPTS, max number of pseudoterminals available
- to this process
-
-doc/{bash.1,bashref.texi}
- - document `ulimit -k' option
- - document `ulimit -P' option
-
-parse.y
- - `timespec list_terminator' production: if the list terminator is `;'
- set last_read_token to `;' to allow things like `time ; command' to
- time null commands and not throw a syntax error. Patch from
- Piotr Grzybowski <narsil.pl@gmail.com>
- - `BANG list_terminator' production: do the same thing
-
-variables.c
- - sv_optind: use find_shell_variable and get_variable_value so we can
- have the variable's context in the case we need to do something
- when we are restoring a previous variable context's value
-
-builtins/getopt.h
- - sh_getopt_state_t: struct to save sh_getopt's internal state so we
- can restore it around function calls in the event that we have a
- local copy of OPTIND
-
-builtins/getopt.[ch]
- - sh_getopt_{save,restore}_istate: new functions to save and restore
- getopt's internal state
- - sh_getopt_{alloc,dispose}_istate: new functions to allocate and
- deallocate sh_getopt_istate_t objects
-
-execute_cmd.c
- - maybe_restore_getopt_state: restore sh_getopt state after executing
- function body iff the funtion declared a local copy of OPTIND
- - execute_function: save sh_getopt state before executing function body
- - execute_function: note in getopt_state->flags whether or not the
- function declared a local copy of OPTIND; used by maybe_restore_getopt_state
- - execute_function: maybe restore sh_getopt state before returning via
- call to maybe_restore_getopt_state. Fixes bugs with getopts and
- state between calls reported in 2011 by Bernd Eggink <monoped@sudrala.de>
- and in 2014 by Oyvind Hvidsten <oyvind.hvidsten@dampir.no>
-
-configure.ac
- - enable-function-import: new option, controls whether function imports
- are included. Enabled by default. Patch from David Galos
- <davegalos@google.com>
-
-config.h.in
- - FUNCTION_IMPORT: define controlled by enable-function-import above
-
-variables.c
- - initialize_shell_variables: include code to import function definitions
- from the environment if FUNCTION_IMPORT is defined
-
-doc/bashref.texi
- - --enable_function-import: document new configuration option
-
- 11/5
- ----
-lib/readline/history.c
- - history_lines_read_from_file: new variable, set by read_history and
- read_history_range to the actual number of lines read from the
- history file. The value is valid immediately after a call to one
- of those functions
- - history_lines_written_to_file: new variable, set by write_history,
- history_do_write, and history_truncate_file to the actual number of
- lines written to the history file. The value is valid immediately
- after a call to one of those functions
-
-variables.c
- - sv_histsize: set history_lines_in_file after history_truncate_file()
- only if hmax < history_lines_in_file (lines we've already read); a
- cosmetic change only
-
-bashhist.c
- - load_history: set history_lines_in_file after read_history() from
- history_lines_read_from_file, since read_history reads all of the
- lines from the history file even if it's more than $HISTSIZE
- - maybe_save_shell_history: after calling write_history(), set
- history_lines_in_file to history_lines_written_to_file, since we
- can assume that we read everyhing we just wrote
-
-builtins/history.def
- - history_builtin: after calling read_history (history -r), set the
- new value of history_lines_in_file, for the same reason as above
- - history_builtin: after calling read_history_range (history -n), set
- history_lines_in_file from history_lines_read_from_file
-
- 11/6
- ----
-lib/readline/histfile.c
- - history_truncate_file: since we move the old file to a backup copy
- before truncating, make sure the new file is owned by the same uid
- as the old
- - history_do_write: use chown in the same way as history_truncate_file
-
- 11/12
- -----
-lib/readline/display.c
- - expand_prompt: takes a new `flags' argument; only one flag defined
- so far: PMT_MULTILINE
- - expand_prompt: changed all callers to add new flags argument
- - rl_expand_prompt, redraw_prompt: make sure to set PMT_MULTILINE in
- FLAGS argument to expand_prompt if expanding parts of a prompt
- containing embedded newlines
- - expand_prompt: only add mode char to last line of a prompt with
- embedded newlines, so mode indicator doesn't get lost and gets
- updated properly. Fixes problem reported by Renlin Li
- <lirenlin@gmail.com>
-
- 11/13
- -----
-
-lib/readline/display.c
- - prompt_modestr: changed prompt_modechar to return a string denoting
- the editing mode; default strings for emacs and both vi modes are
- #defines in this file. prompt_modestr takes an argument in which
- it returns the length of the mode string
- - expand_prompt: if expanding mode strings in the prompt, get the
- mode string to use and add it at the beginning of the prompt string,
- before expanding it. This will allow future work allowing the mode
- string to contain invisible characters
-
- 11/15
- -----
-lib/readline/rlprivate.h
- - _rl_{emacs,vi_cmd,vi_ins}_mode_str: extern declarations for
- variables to hold current values of user-settable mode strings;
- variables to hold lengths
-
-lib/readline/rlconf.h
- - defines for default values of the mode strings for each editing mode
- and keymap
-
-lib/readline/display.c
- - _rl_{emacs,vi_cmd,vi_ins}_mode_str: new variables to hold values of
- user-settable mode strings
- - _rl_{emacs,vi_cmd,vi_ins}_modestr_len: new variables to hold lengths
- of corresponding mode string variables
- - prompt_modestr: return appropriate user-settable mode string
- variables
-
-lib/readline/bind.c
- - {emacs,vi-ins,vi-cmd}-mode-string: new user-settable mode string
- variables
- - sv_{emacs,viins,vicmd}_modestr: variable handling functions for user-
- settable mode string variables. Non-null values are run through
- rl_translate_keyseq so users can include invisible character
- sequences in the mode strings; null values restore the default
- - _rl_get_string_variable_value: handle values for new user-settable
- mode string variables. Original code contributed by Dylan Cali
- <calid1984@gmail.com>
-
-lib/readline/doc/rluser.texi
- - {emacs,vi-ins,vi-cmd}-mode-string: document, including the fact that
- you can use \1 and \2 to bracket sequences of non-printing
- characters
-
- 11/16
- -----
-lib/readline/history.c
- - add_history: replace loop that copies history list down one item
- with call to memmove to take advantage of whatever efficiencies
- libc can offer. Won't be any slower than current loop
-
-lib/readline/display.c
- - rl_redraw_prompt_last_line: new function, calls redraw_prompt if
- the prompt contains multiple lines; calls rl_forced_update_display
- if not
-
-lib/readline/readline.h
- - rl_redraw_prompt_last_line: extern declaration, undocumented in
- texinfo manual until I get it a little more work
-
-bashline.c
- - bash_execute_unix_command: instead of unconditionally calling
- rl_forced_update_display, call rl_redraw_prompt_last_line if we
- cleared the last line before executing the command. This keeps
- commands that don't display any other output but just manipulate
- the contents of the line buffer from redisplaying the prompt lines
- before the last newline multiple times. Fixes bug reported by
- Jesper Nygards <jesper.nygards@gmail.com> and Rob Foehl
- <rwf@loonybin.net>. This means that commands that display output
- will *only* display the final line of the prompt
- - bash_execute_unix_command: if the command returns 124, we redraw
- the line unconditionally, including all lines of the prompt
-
- 11/18
- -----
-builtins/mapfile.def
- - mapfile_builtin: don't allow a valid array reference through to
- mapfile(), since it will just create a shell variable with that name.
- Bug and fix from Eduardo A. Bustamante López <dualbus@gmail.com>
-
- 11/19
- -----
-lib/readline/complete.c
- - _rl_colored_completion_prefix: new variable, if non-zero, and color
- support is compiled in, and the $LS_COLORS variable exists and
- contains color definitions, display any common prefix of a set of
- completions in blue when displaying all the possible completions.
- Doesn't work with menu-complete, which inserts possible completions
- inline
- - colored_prefix_start(), colored_prefix_end(): new functions, used to
- bracket colored completion prefixes
- - fnprint: if prefix_bytes is non-zero, and _rl_colored_completion_prefix
- is > 0, display the first PREFIX_BYTES bytes of the word bracketed
- by calls to colored_prefix_start and colored_prefix_end
- - print_filename: if _rl_colored_completion_prefix is > 0, compute the
- length in bytes of the common prefix and pass that to fnprint
-
-lib/readline/readline.c
- - readline_initialize_everything: initialize the colors from $LS_COLORS
- if _rl_colored_completion_prefix is non-zero
-
-lib/readline/colors.c
- - _rl_print_prefix_color: new function, changes text color to that
- defined for the common prefix of a set of possible completions
- (currently cyan, same as directories); currently uses C_PREFIX,
- defined in colors.h as C_DIR
-
-lib/readline/colors.h
- - _rl_print_prefix_color: new extern declaration
-
-lib/readline/bind.c
- - colored-completion-prefix: new bindable variable, if set, common
- prefix of a set of possible completions is displayed in color.
- Feature requested by several, most recently by Richard Neill
- <rn214@richardneill.org> (in a slightly different form) and
- Duy Nguyen <pclouds@gmail.com>
-
- 11/20
- -----
-builtins/printf.def
- - printf_builtin: allow null (empty) format strings supplied with
- -v var to set `var' to the empty string. That is, printf -v var ""
- is now the same as var="". Change suggested by Mike Frysinger
- <vapier@gentoo.org>
-
-pathexp.h
- - FNMATCH_NOCASEGLOB: macro to decide whether or not to pass
- FNM_CASEFOLD flag to strmatch depending on whether glob_ignore_case
- is set; analogout to FNMATCH_IGNCASE
-
-pathexp.c
- - glob_name_is_acceptable: use FNMATCH_NOCASEMATCH to determine flags
- passed to strmatch; if nocaseglob is used to generate glob matches,
- it should be used to generate ignored matches
-
- 11/21
- -----
-pcomplete.c
- - filter_stringlist: the call to strmatch now honors the setting of
- nocasematch. Feature request from Ville Skytta <ville.skytta@iki.fi>
- back in 2010
-
-doc/bash.1,lib/readline/doc/rluser.texi
- - complete -X: document that filtering the list of possible completions
- honors the nocasematch option when performing matching
-
-lib/glob/gmisc.c
- - include chartypes.h and strmatch.h for new defines
- - match_pattern_{wchar,char}: now take new third FLAGS argument, flags
- have same meanings as strmatch(); intent is to handle case
- insensitive comparisons under same conditions as strmatch
- - FOLD: imported case-folding define from sm_loop.c; wide and single-
- byte character versions
- - match_pattern_{wchar,char}: use FOLD when comparing characters to
- honor FNM_CASEFOLD if set in FLAGS argument
-
-externs.h
- - match_pattern_{wchar,char}: updated extern declarations
-
-subst.c
- - match_{upattern,wpattern}: update strmatch/wcsmatch calls to include
- FNMATCH_IGNCASE in flags argument
- - match_{upattern,wpattern}: update match_pattern_{char,wchar} calls
- to include FNMATCH_IGNCASE in flags argument (consistent with calls
- to strmatch). This makes pattern substitution word expansion honor
- nocasematch shell option. Feature requested by Davide Baldini
- <baldiniebaldini@gmail.com>
- - match_wpattern: make sure to fold case if necessary when doing simple
- matching
-
-doc/{bash.1,bashref.texi}
- - pattern substitution: updated description to include honoring setting
- of nocasematch when performing matching
-
-subst.c
- - expand_word_internal: optimize handling of "$@" idiom by calling
- list_rest_of_args() and quote_list() directly at the top of the
- function instead of going through normal code path
- - cached_quoted_dollar_at: WORD_LIST of quoted positional parameters,
- used by same code above that optimizes "$@"; if non-null we just
- return a copy of the list; if null, we save a copy of the list we
- create
- - invalidate_cached_quoted_dollar_at: convenience function to allow
- other parts of the shell (e.g., remember_args()) to destroy the
- cached list of quoted positional parameter when the positional
- parameters change
-
-builtins/common.c
- - remember_args: call invalidate_cached_quoted_dollar_at()
-
-builtins/shift.def
- - shift_builtin: call invalidate_cached_quoted_dollar_at after modifying
- dollar_vars[]
-
-builtins/source.def
- - maybe_pop_dollar_vars: call invalidate_cached_quoted_dollar_at just
- to be safe
-
- 11/23
- -----
-builtins/evalfile.c
- - _evalfile: return -1 if errno == ENOENT and the flags don't include
- FEVAL_ENOENTOK. If we print an error message we should return an
- error
- - force_execute_file: new function, reads and executes commands from
- a file but returns an error if file doesn't exist
-
-builtins/common.h
- - force_execute_file: new extern declaration
-
-shell.c
- - main: call start_debugger even if dollar_vars[1] == 0 if the shell
- isn't interactive (interactive_shell == 0)
- - start_debugger: call force_execute_file instead of maybe_execute_file;
- turn off debugging mode if it returns value < 0
-
- 11/24
- -----
-hashlib.h
- - DEFAULT_HASH_BUCKETS: doubled to 128, cost in memory use is small but
- changes traversal order when not sorting results
-
- 11/25
- -----
-doc/{bash.1,bashref.texi}
- - make it clearer, by breaking it out into a separate paragraph, that
- referencing an array without a subscript is equivalent to referencing
- it with subscript 0
- - add text saying that referencing any variable using a valid subscript
- is OK
-
- 11/28
- -----
-
-arrayfunc.c
- - bind_array_variable, bind_assoc_variable: allow binding value to a
- readonly variable if the ASS_FORCE flag is set in the FLAGS
- argument
-
-subst.h
- - ASS_FORCE: new assignment flag; means to allow assignment even if
- variable is marked readonly
-
-builtins/declare.def
- - when assigning a value to an array or assoc variable using
- something like `declare -r foo=bar' where foo is an existing array
- variable, pass the ASS_FORCE to assign_array_var_from_string so
- the assignment is allowed. Fixes debian bug 765759
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=765759
-
-builtins/setattr.def
- - var_attribute_string: new function to return (as argument) a char
- array with attribute flag values for a given variable; returns the
- length of the array
-
-lib/sh/shquote.c
- - sh_quote_reusable: function returning a version of its string
- argument that is quoted for reuse
-
-externs.h
- - sh_quote_reusable: extern declaration
-
-builtins/common.h
- - MAX_ATTRIBUTES: define used to size arrays for attribute flag
- characters
- - var_attribute_string: new extern function declaration
-
-subst.c
- - array_remove_pattern: fixed a bug where `var' instead of `v' was
- tested for invisible attribute
- - get_var_and_type: fill in a valid *VARP if returning VT_VARIABLE
- because callers may need to use it
- - parameter_brace_transform: family of functions to implement the new
- mksh-inspired ${param@spec} transformation word expansions. Some
- of the operators transform the (expanded) value of the parameter,
- the rest expand to information about the parameter itself
- (array_transform, parameter_list_transform, list_transform,
- string_transform, pos_params_assignment, array_var_assignment,
- string_var_assignment)
- - parameter_brace_expand: changes to parse the new `@' word expansion
- operator and call parameter_brace_transform appropriately
- - parameter_brace_expand: make sure we handle ${#@} as we have before
- even in the presence of the new `@' operator
-
-variables.c
- - push_temp_var: make sure to call bind_variable_internal with the
- ASS_FORCE flag so we override readonly variables created with
- something like `tempvar=foo declare -r foo'.
- - bind_variable_internal: honor ASS_FORCE flag to allow binding even
- if a variable is readonly
-
-execute_cmd.c
- - struct func_array_state: new state to save state of BASH_LINENO,
- BASH_SOURCE, and FUNCNAME during function execution so it can be
- restored on a jump to top level
- - restore_funcarray_state: new function to restore func_array_state
- - execute_function: fill in func_array_state variable, add unwind-
- protect to restore it on jump to top level, call explicitly at
- end of function if subshell != 0 (may not be necessary, but safe
- for now). Fixes bug with local assignments to FUNCNAME reported
- by Arfrever Frehtes Taifersar Arahesis <arfrever.fta@gmail.com>
-
- 11/29
- -----
-arrayfunc.c
- - assign_compound_array_list: turn off ASS_APPEND flag when processing
- each individual assignment inside the parens in var+=(...). The
- outer += should not affect assignments to existing subscripts;
- those should be treated like usual assignments unless += supplied
- inside the parens. Bug report from Maarten Billemont
- <lhunath@lyndir.com>, fix from Eduardo A. Bustamante López
- <dualbus@gmail.com>
-
-config.h.in
- - HAVE_PSELECT: define if pselect(2) available
-
-configure.ac
- - check for pselect(2), define HAVE_PSELECT if found
-
-lib/readline/input.c
- - rl_getc: use pselect(2) to wait for input ready on readline's
- input fd or for a signal to arrive, will handle SIGWINCH (which
- does not interrupt read(2)) and thus allow resize to happen without
- having to wait to read more input. Only works if pselect available
- and returns -1/EINTR on a signal even if the signal was installed
- with SA_RESTART. From a suggestion from Egmont Koblinger
- <egmont@gmail.com>
-
- 12/3
- ----
-variables.c
- - flush_temporary_env: new function, disposes all temp variables in
- temporary_env hash table
- - bind_variable: only try to update a temporary variable's value in the
- temporary env if the value argument is not null. Fixes bug reported
- by <tangqinghao@360.cn>
-
-variables.h
- - flush_temporary_env: new extern declaration
-
-subst.c
- - command_substitute: if running command substitution as part of
- expanding a redirection (expanding_redir == 1), flush any temporary
- environment we've inherited as part of this command, since we are not
- supposed to have access to the temporary environment. Since
- expanding_redir only controls access to the temporary environment for
- variable lookup and binding, we can turn it off in the subshell
-
- 12/4
- ----
-builtins/printf.def
- - printstr: make sure a missing precision specifier after a `.' is
- treated as 0, as printf(3) specifies. Fixes ubuntu bash bug
- 1399087 (https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1399087)
-
- 12/5
- ----
-subst.c
- - skip_to_delim: if scanning past process substitution (skipcmd == 1,
- noprocsub == 0), use extract_delimited_string instead of
- extract_process_subst, which was changed a while back (bash-4.3.23)
- to use xparse_dolparen. xparse_dolparen complains if the command
- or process substitution is unterminated, since it runs the parser,
- which is not what we want here. Command substitution does the same
- thing. Fixes bug reported by Daniel Kahn Gillmor
- <dkg@fifthhorseman.net> as Debian bash bug 771968
- (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=771968)
-
- 12/6
- ----
-subst.c
- - command_substitute: short-circuit without forking on a command string
- that consists entirely of <blank>s and newlines
-
-jobs.c
- - make_child: changes to allow interrupts through if fork fails and
- we are sleeping for `forksleep' seconds
- - waitchld: make things a little more resilient if CHILD ends up NULL
-
- 12/12
- -----
-lib/readline/complete.c
- - rl_display_match_list: when calculating common prefix to display in
- color, make sure we correctly handle a common prefix with a trailing
- `/' as we do when checking whether or not to add an ellipis.
- printable_part() doesn't return the whole pathname if it ends in a
- slash, to avoid printing null strings, so we have to make sure we
- have the entire prefix
-
-lib/readline/complete.c
- - _rl_complete_display_matches_interrupt: new variable, set to 1 by
- _rl_complete_sigcleanup to let rl_display_match_list know it has
- freed the match list
- - display_matches: check for signals during the printing loops with
- RL_SIG_RECEIVED(), return immediately if there is a pending signal
- (might not want to do this if it's SIGWINCH -- CHECK)
- - rl_complete_internal: if _rl_complete_display_matches_interrupt
- set after calling display_matches, just null out `matches' since
- it's already been freed and call any application-set signal hook
-
- 12/14
- -----
-parse.y
- - time_command_acceptable: if the token before a newline is `|',
- return 0, since it's not really valid to time inside a pipeline.
- Only handles a single newline but allows things like
- echo a |
- time cat
- to invoke /usr/bin/time, which is probably enough to catch the
- stray carriage return. Fixes bug reported by Andre Majorel
- <aym-ung@teaser.fr>
-
-builtins/declare.def
- - declare_internal: don't try to perform compound assignments unless
- the WORD_DESC has flags including W_COMPASSIGN (maybe should check
- W_ASSIGNMENT as well), avoiding unexpected evaluation if a word
- is of the form (word) and is assigned to an array variable like so:
- declare -x var=$value. Bug reported by Stephane Chazelas
- <stephane.chazelas@gmail.com>. Will eventually be contingent on
- compatibility level > 43, but not there yet. TENTATIVE
-
- 12/15
- -----
-lib/sh/Makefile.in
- - add missing dependencies for shmatch.o. Pointed out by Sergey
- Mikhailov <sergey.mikhailov@gmail.com>
-
- 12/16
- -----
-{execute_cmd,subst}.c
- - W_ASSIGNINT: remove, not used any more
-
-execute_cmd.c
- - fix_assignment_words: don't look for `-i' option and set W_ASSIGNINT
- flag any more; doing things a different way
- - shell_expand_word_list: instead of using W_ASSIGNINT flag, since it
- doesn't take into account all options that can transform values on
- assignment (-l/-u/-c can also), go through option arguments looking
- for options that need special handling and add them to the `opts'
- array for make_internal_declare to use. Fixes bug with constructs
- like `declare -al foo=(UPONE UPTWO UPTHREE)' not being lowercased on
- assignment reported by Linda Walsh <bash@tlinx.org>
-
-
-
- 12/18
- -----
-lib/readline/readline.c
- - rl_internal_char: when we read EOF on a non-empty line, check for
- signals and invoke any readline signal handling and any application-
- installed signal hook
-
- 12/20
- -----
-lib/readline/readline.c
- - rl_internal_char: if we read EOF on a non-empty line, set c to
- _rl_eof_char the first time through. If we read EOF the next time,
- return EOF from readline(). If callbacks are defined, this returns
- EOF immediately, since lastc isn't available. Fix for problem
- most recently identified by Jiri Kukacka <jiri.kukacka@orcle.com>,
- it has come up in the past
-
- 12/21
- -----
-builtins/declare.def
- - declare_internal: keep track of whether or not an assignment statement
- argument to declare is an array subscript assignment; need to
- differentiate assignments from straight declarations (declare a[4])
- which are accepted for backwards compatibility
- - assignment statements like declare a[2]=foo are now treated as
- straight subscript assignment statements if a already exists as an
- array variable
- - declare foo='(1 2 3)' is treated as an assignment to foo[0] if foo
- exists and is an array, just as it would be if it were an assignment
- statement and `declare' was not present. All this from a proposal
- by Stephane Chazelas <stephane.chazelas@gmail.com>
-
- 12/22
- -----
-builtins/read.def
- - read_tty_modified: function to tell the rest of the shell if the
- read builtin has modified the tty
- - read_builtin: make sure to initialize terminating signals before
- installing a SIGALRM signal handler in case we modify the tty as
- well as ask for a timeout; the subsequent call to
- initialize_terminating_signals would overwrite the read-builtin-
- local SIGALRM handler
-
-builtins/common.h
- - read_tty_modified: new extern declaration
-
-shell.c
- - exit_shell: if read_tty_modified() returns true, call read_tty_cleanup
- to undo the terminal modifications. Extension of previous fixes;
- fixes bug with read -s reported by Richard W. Marsden
- <richard@marsden.nu>
-
-
- 12/23
- -----
-builtins/setattr.def
- - show_var_attributes: call print_array_assignment and print_assoc_assignment
- with a `not quoted' flag so the assignment statements are not
- surrounded by single quotes. Caused changes to a lot of test output
-
- 12/29
- -----
-lib/readline/complete.c
- - stat_char: Windows doesn't handle X_OK flag to access(2); use file
- extensions to determine whether or not a file is executable. Bug
- report and fix from Eli Zaretskii <eliz@gnu.org>
-
-configure.ac
- - changed version to bash-4.4-devel
-
-lib/readline/readline.h
- - changed version to readline-6.4
-
- 12/30
- -----
-readline.h
- - struct readline_state: fix types of `ignorefunc' and `attemptfunc'
- members
-
-lib/sh/shquote.c,externs.h
- - sh_contains_shell_metas, sh_contains_quotes: now take `const char *'
- as parameter
-
-stringlib.c,externs.h
- - strcreplace: `text' argument now `const char *'
-
-pathexp.[ch]
- - quote_globbing_chars: `string' argument now `const char *', accompanying
- changes to function local variables
-
-pcomplete.c
- - preproc_filterpat: `text' argument now `const char *'
- - filter_stringlist: `text' argument now `const char *'
-
- 12/31
- -----
-builtins/evalstring.c
- - should_suppress_fork: new function, broke code that decides whether
- to turn on CMD_NO_FORK flag out of parse_and_execute into a separate
- function
-
-execute_cmd.c
- - execute_command_internal: AND_AND, OR_OR: call should_suppress_fork
- for the RHS of && and ||, make `make' invocations marginally more
- efficient
-
-flags.c
- - get_current_flags: returns a bitmap of all single-letter shell
- options with a non-zero value meaning option is enabled
- - set_current_flags: set current single-letter options from a passed
- bitmap, which has presumably been initialized with get_current_flags
-
-flags.h
- - {get,set}_current_flags: new extern declarations
-
-builtins/declare.def
- - declare_internal: if invoked as `local', interpret name argument of
- `-' to mean to save (and restore at shell return) single-letter
- shell options
-
-variables.c
- - push_func_var: if we encounter `-' as the name of a local variable,
- take the value and call set_current_flags on it to restore old
- flag settings
-
-builtins/set.def
- - get_current_options: returns a bitmap of all shell options settable
- with `set', with a non-zero value meaning option is enabled
- - set_current_options: set current shell options from a passed
- bitmap, which has presumably been initialized with get_current_options
-
-
- 1/1/2015
- --------
-lib/readline/parens.c
- - _rl_blink_matching_paren: initialize to 0 whether or not select(2) is
- available. Inconsistency reported by Mark Karpov
- <markkarpov@opmbx.org>
-
-builtins/declare.def
- - declare_internal: use get_current_options instead of get_current_flags,
- so `local -' can be generalized
-
-variables.c
- - push_func_var: use set_current_options instead of set_current_flags
- so `local -' can be generalized
-
-doc/{bash.1,bashref.texi}
- - document new `local -' feature; originally inspired by Robert Elz
- <kre@munnari.oz.au> describing feature in NetBSD sh
-
- 1/3
- ---
-lib/readline/{complete,funmap,kill,histfile,util}
-lib/readline/readline.h
-lib/tilde/tilde.c
- - fixes for filename- and evironment-related issues on Windows. Fixes
- from Eli Zaretskii <eliz@gnu.org>
- - Windows can paste to the console from the clipboard like Cygwin
- - Windows uses $APPDATA as a pseudo-$HOME
-
-lib/readline/input.c
- - rl_getc: use _getch on Windows to avoid being overridden by a getch
- ncurses function
- - win32_isatty: replace Windows isatty(3) with a function that does
- additional checks, sinces Windows isatty returns non-zero for
- every character device. From Eli Zaretskii <eliz@gnu.org>
-
-lib/readline/display.c
- - delete_chars: if compiled with ncurses on Windows, this code can
- work, so build it in if NCURSES_VERSION defined
- - open_some_spaces: ditto
-
- 1/6
- ---
-doc/{bash.1,bashref.texi}
- - minor grammar and typo corrections from TonyMc <afmcc@btinternet.com>
-
- 1/8
- ---
-sig.c
- - throw_to_top_level: only attempt to run the interrupt trap if SIGINT
- is trapped -- minor optimization
- - throw_to_top_level: if we are running a trap, call run_trap_cleanup
- to turn off the sigmodes flags
-
-trap.c
- - _run_trap_internal: temporarily suppress pending SIGINTs while running
- one of the traps the shell handles internally (e.g., ERR). Fixes bug
- reported by Keith Thompson <keithsthompson@gmail.com>
-
- 1/10
- ----
-bashhist.c
- - bash_history_inhibit_expansion: use skip_to_delim with the history
- expansion character to see whether or not the instance of the
- history expansion character should be skipped because, for instance,
- it is in a command substitution. Fixes issue reported by
- Zigmund.Ozean@zig-home.localdomain
-
- 1/14
- ----
-lib/readline/isearch.c
- - _rl_isearch_dispatch: if we are in a multibyte locale, make sure to use
- _rl_find_prev_mbchar when trying to delete characters from the search
- string, instead of just chopping off the previous byte. Fixes bug
- reported by Kyrylo Shpytsya <kshpitsa@gmail.com>
-
-lib/readline/complete.c
- - rl_filename_completion_function: if we tilde-expand `dirname', make
- sure we use the expanded result instead of throwing it away for the
- quote-removed `users_dirname', which still has any leading tilde.
- Fixes bug reported by Dave Rutherford <dave@evilpettingzoo.com>
-
-execute_cmd.c
- - select_query: if the read builtin doesn't return anything in REPLY,
- return NULL (failure). Fixes bug reported by Etherial Raine
- <osirisgothra@hotmail.com>
-
-builtins/read.def
- - read_builtin: if REPLY has the readonly or noassign attribute, return
- failure
-
- 1/16
- ----
-redir.c
- - redir_open: if open() returns -1/EINTR, check traps as well as
- using QUIT to handle signals
-
- 1/18
- ----
-jobs.c
- - wait_for: make sure queue_sigchld is set to 1 before unblocking
- SIGCHLD if MUST_UNBLOCK_CHLD is defined
-
- 1/19
- ----
-pcomplete.h
- - new progcomp option: COPT_NOSORT, means to not sort list of possible
- completions
-
-pcomplete.c
- - pcomp_set_readline_variables: if COPT_NOSORT set in compspec flags,
- set rl_sort_completion_duplicates to 0
-
-builtins/complete.def
- - _compopt: new option value: -o nosort, sets COPT_NOSORT in compspec
- option flags. Provides new -o nosort option for complete and compgen
-
-bashline.c
- - attempt_shell_completion: make sure rl_sort_completion_matches is
- set to 1 before completion is attempted; allow a compspec to turn
- it off
-
-lib/readline/kill.c
- - rl_vi_yank_pop: new function, vi-mode version of yank-pop. Original
- code from Ian Kelling <ian@iankelling.org>
-
-lib/readline/funmap.c
- - `vi-yank-pop': bindable name mapped to rl_vi_yank_pop
-
-lib/readline/readline.h
- - rl_vi_yank_pop: extern declaration
-
- 1/21
- ----
-lib/sh/shquote.c
- - sh_backslash_quote: change to understand and handle multibyte
- characters, using is_basic, COPY_CHAR_P. See
- https://bugzilla.redhat.com/show_bug.cgi?id=1184320 for original
- report
-
- 1/23
- ----
-include/posixjmp.h
- - use setjmp_sigs instead of redefined setjmp, it fails on Cygwin.
- Report from Eric Blake <eblake@redhat.com>
-
-builtins/wait.def,shell.c
- - use setjmp_sigs instead of setjmp call, since setjmp no longer
- redefined to something known
-
-include/chartypes.h, lib/readline/chardefs.h
- - make sure all ctype.h macros are called with unsigned char args,
- casting to make sure
+++ /dev/null
-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 $PWD does not contain any symbolic links, as if
- `cd -P' had been executed.
-
-18. A non-interactive shell exits with an error status if a variable
- assignment error occurs when no command name follows the assignment
- statements. A variable assignment error occurs, for example, when
- trying to assign a value to a read-only variable.
-
-19. A non-interactive shell exits with an error status if the iteration
- variable in a for statement or the selection variable in a select
- statement is a read-only variable.
-
-20. Process substitution is not available.
-
-21. Assignment statements preceding POSIX.2 `special' builtins persist in
- the shell environment after the builtin completes.
-
-There is other Posix.2 behavior that bash does not implement. Specifically:
-
-1. Assignment statements affect the execution environment of all builtins,
- not just special ones.
+++ /dev/null
-This file is set.def, from which is created set.c.
-It implements the "set" and "unset" builtins in Bash.
-
-Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
-
-This file is part of GNU Bash, the Bourne Again SHell.
-
-Bash is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 1, or (at your option) any later
-version.
-
-Bash is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY; without even the implied warranty of MERCHANTABILITY or
-FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-for more details.
-
-You should have received a copy of the GNU General Public License along
-with Bash; see the file COPYING. If not, write to the Free Software
-Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
-$PRODUCES set.c
-
-#include <stdio.h>
-#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);
-}
+++ /dev/null
-/* 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 */
+++ /dev/null
-/* bashline.c -- Bash's interface to the readline library. */
-
-/* Copyright (C) 1987-2013 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 <http://www.gnu.org/licenses/>.
-*/
-
-#include "config.h"
-
-#if defined (READLINE)
-
-#include "bashtypes.h"
-#include "posixstat.h"
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
-
-#if defined (HAVE_GRP_H)
-# include <grp.h>
-#endif
-
-#if defined (HAVE_NETDB_H)
-# include <netdb.h>
-#endif
-
-#include <signal.h>
-
-#include <stdio.h>
-#include "chartypes.h"
-#include "bashansi.h"
-#include "bashintl.h"
-
-#include "shell.h"
-#include "input.h"
-#include "builtins.h"
-#include "bashhist.h"
-#include "bashline.h"
-#include "execute_cmd.h"
-#include "findcmd.h"
-#include "pathexp.h"
-#include "shmbutil.h"
-#include "trap.h"
-
-#include "builtins/common.h"
-
-#include <readline/rlconf.h>
-#include <readline/readline.h>
-#include <readline/history.h>
-
-#include <glob/glob.h>
-
-#if defined (ALIAS)
-# include "alias.h"
-#endif
-
-#if defined (PROGRAMMABLE_COMPLETION)
-# include "pcomplete.h"
-#endif
-
-/* These should agree with the defines for emacs_mode and vi_mode in
- rldefs.h, even though that's not a public readline header file. */
-#ifndef EMACS_EDITING_MODE
-# define NO_EDITING_MODE -1
-# define EMACS_EDITING_MODE 1
-# define VI_EDITING_MODE 0
-#endif
-
-#define RL_BOOLEAN_VARIABLE_VALUE(s) ((s)[0] == 'o' && (s)[1] == 'n' && (s)[2] == '\0')
-
-#if defined (BRACE_COMPLETION)
-extern int bash_brace_completion __P((int, int));
-#endif /* BRACE_COMPLETION */
-
-/* To avoid including curses.h/term.h/termcap.h and that whole mess. */
-#ifdef _MINIX
-extern int tputs __P((const char *string, int nlines, void (*outx)(int)));
-#else
-extern int tputs __P((const char *string, int nlines, int (*outx)(int)));
-#endif
-
-/* Forward declarations */
-
-/* Functions bound to keys in Readline for Bash users. */
-static int shell_expand_line __P((int, int));
-static int display_shell_version __P((int, int));
-static int operate_and_get_next __P((int, int));
-
-static int bash_ignore_filenames __P((char **));
-static int bash_ignore_everything __P((char **));
-
-#if defined (BANG_HISTORY)
-static char *history_expand_line_internal __P((char *));
-static int history_expand_line __P((int, int));
-static int tcsh_magic_space __P((int, int));
-#endif /* BANG_HISTORY */
-#ifdef ALIAS
-static int alias_expand_line __P((int, int));
-#endif
-#if defined (BANG_HISTORY) && defined (ALIAS)
-static int history_and_alias_expand_line __P((int, int));
-#endif
-
-static int bash_forward_shellword __P((int, int));
-static int bash_backward_shellword __P((int, int));
-static int bash_kill_shellword __P((int, int));
-static int bash_backward_kill_shellword __P((int, int));
-
-/* Helper functions for Readline. */
-static char *restore_tilde __P((char *, char *));
-static char *maybe_restore_tilde __P((char *, char *));
-
-static char *bash_filename_rewrite_hook __P((char *, int));
-
-static void bash_directory_expansion __P((char **));
-static int bash_filename_stat_hook __P((char **));
-static int bash_command_name_stat_hook __P((char **));
-static int bash_directory_completion_hook __P((char **));
-static int filename_completion_ignore __P((char **));
-static int bash_push_line __P((void));
-
-static int executable_completion __P((const char *, int));
-
-static rl_icppfunc_t *save_directory_hook __P((void));
-static void restore_directory_hook __P((rl_icppfunc_t));
-
-static void cleanup_expansion_error __P((void));
-static void maybe_make_readline_line __P((char *));
-static void set_up_new_line __P((char *));
-
-static int check_redir __P((int));
-static char **attempt_shell_completion __P((const char *, int, int));
-static char *variable_completion_function __P((const char *, int));
-static char *hostname_completion_function __P((const char *, int));
-static char *command_subst_completion_function __P((const char *, int));
-
-static void build_history_completion_array __P((void));
-static char *history_completion_generator __P((const char *, int));
-static int dynamic_complete_history __P((int, int));
-static int bash_dabbrev_expand __P((int, int));
-
-static void initialize_hostname_list __P((void));
-static void add_host_name __P((char *));
-static void snarf_hosts_from_file __P((char *));
-static char **hostnames_matching __P((char *));
-
-static void _ignore_completion_names __P((char **, sh_ignore_func_t *));
-static int name_is_acceptable __P((const char *));
-static int test_for_directory __P((const char *));
-static int return_zero __P((const char *));
-
-static char *bash_dequote_filename __P((char *, int));
-static char *quote_word_break_chars __P((char *));
-static void set_filename_bstab __P((const char *));
-static char *bash_quote_filename __P((char *, int, char *));
-
-#ifdef _MINIX
-static void putx __P((int));
-#else
-static int putx __P((int));
-#endif
-static int bash_execute_unix_command __P((int, int));
-static void init_unix_command_map __P((void));
-static int isolate_sequence __P((char *, int, int, int *));
-
-static int set_saved_history __P((void));
-
-#if defined (ALIAS)
-static int posix_edit_macros __P((int, int));
-#endif
-
-static int bash_event_hook __P((void));
-
-#if defined (PROGRAMMABLE_COMPLETION)
-static int find_cmd_start __P((int));
-static int find_cmd_end __P((int));
-static char *find_cmd_name __P((int, int *, int *));
-static char *prog_complete_return __P((const char *, int));
-
-static char **prog_complete_matches;
-#endif
-
-/* Variables used here but defined in other files. */
-#if defined (BANG_HISTORY)
-extern int hist_verify;
-#endif
-
-extern int current_command_line_count, saved_command_line_count;
-extern int last_command_exit_value;
-extern int array_needs_making;
-extern int posixly_correct, no_symbolic_links;
-extern int sigalrm_seen;
-extern char *current_prompt_string, *ps1_prompt;
-extern STRING_INT_ALIST word_token_alist[];
-extern sh_builtin_func_t *last_shell_builtin, *this_shell_builtin;
-
-/* SPECIFIC_COMPLETION_FUNCTIONS specifies that we have individual
- completion functions which indicate what type of completion should be
- done (at or before point) that can be bound to key sequences with
- the readline library. */
-#define SPECIFIC_COMPLETION_FUNCTIONS
-
-#if defined (SPECIFIC_COMPLETION_FUNCTIONS)
-static int bash_specific_completion __P((int, rl_compentry_func_t *));
-
-static int bash_complete_filename_internal __P((int));
-static int bash_complete_username_internal __P((int));
-static int bash_complete_hostname_internal __P((int));
-static int bash_complete_variable_internal __P((int));
-static int bash_complete_command_internal __P((int));
-
-static int bash_complete_filename __P((int, int));
-static int bash_possible_filename_completions __P((int, int));
-static int bash_complete_username __P((int, int));
-static int bash_possible_username_completions __P((int, int));
-static int bash_complete_hostname __P((int, int));
-static int bash_possible_hostname_completions __P((int, int));
-static int bash_complete_variable __P((int, int));
-static int bash_possible_variable_completions __P((int, int));
-static int bash_complete_command __P((int, int));
-static int bash_possible_command_completions __P((int, int));
-
-static char *glob_complete_word __P((const char *, int));
-static int bash_glob_completion_internal __P((int));
-static int bash_glob_complete_word __P((int, int));
-static int bash_glob_expand_word __P((int, int));
-static int bash_glob_list_expansions __P((int, int));
-
-#endif /* SPECIFIC_COMPLETION_FUNCTIONS */
-
-static int edit_and_execute_command __P((int, int, int, char *));
-#if defined (VI_MODE)
-static int vi_edit_and_execute_command __P((int, int));
-static int bash_vi_complete __P((int, int));
-#endif
-static int emacs_edit_and_execute_command __P((int, int));
-
-/* Non-zero once initalize_readline () has been called. */
-int bash_readline_initialized = 0;
-
-/* If non-zero, we do hostname completion, breaking words at `@' and
- trying to complete the stuff after the `@' from our own internal
- host list. */
-int perform_hostname_completion = 1;
-
-/* If non-zero, we don't do command completion on an empty line. */
-int no_empty_command_completion;
-
-/* Set FORCE_FIGNORE if you want to honor FIGNORE even if it ignores the
- only possible matches. Set to 0 if you want to match filenames if they
- are the only possible matches, even if FIGNORE says to. */
-int force_fignore = 1;
-
-/* Perform spelling correction on directory names during word completion */
-int dircomplete_spelling = 0;
-
-/* Expand directory names during word/filename completion. */
-#if DIRCOMPLETE_EXPAND_DEFAULT
-int dircomplete_expand = 1;
-int dircomplete_expand_relpath = 1;
-#else
-int dircomplete_expand = 0;
-int dircomplete_expand_relpath = 0;
-#endif
-
-/* When non-zero, perform `normal' shell quoting on completed filenames
- even when the completed name contains a directory name with a shell
- variable referene, so dollar signs in a filename get quoted appropriately.
- Set to zero to remove dollar sign (and braces or parens as needed) from
- the set of characters that will be quoted. */
-int complete_fullquote = 1;
-
-static char *bash_completer_word_break_characters = " \t\n\"'@><=;|&(:";
-static char *bash_nohostname_word_break_characters = " \t\n\"'><=;|&(:";
-/* )) */
-
-static const char *default_filename_quote_characters = " \t\n\\\"'@<>=;|&()#$`?*[!:{~"; /*}*/
-static char *custom_filename_quote_characters = 0;
-static char filename_bstab[256];
-
-static rl_hook_func_t *old_rl_startup_hook = (rl_hook_func_t *)NULL;
-
-static int dot_in_path = 0;
-
-/* Set to non-zero when dabbrev-expand is running */
-static int dabbrev_expand_active = 0;
-
-/* What kind of quoting is performed by bash_quote_filename:
- COMPLETE_DQUOTE = double-quoting the filename
- COMPLETE_SQUOTE = single_quoting the filename
- COMPLETE_BSQUOTE = backslash-quoting special chars in the filename
-*/
-#define COMPLETE_DQUOTE 1
-#define COMPLETE_SQUOTE 2
-#define COMPLETE_BSQUOTE 3
-static int completion_quoting_style = COMPLETE_BSQUOTE;
-
-/* Flag values for the final argument to bash_default_completion */
-#define DEFCOMP_CMDPOS 1
-
-/* Change the readline VI-mode keymaps into or out of Posix.2 compliance.
- Called when the shell is put into or out of `posix' mode. */
-void
-posix_readline_initialize (on_or_off)
- int on_or_off;
-{
- if (on_or_off)
- rl_variable_bind ("comment-begin", "#");
-#if defined (VI_MODE)
- rl_bind_key_in_map (CTRL ('I'), on_or_off ? rl_insert : rl_complete, vi_insertion_keymap);
-#endif
-}
-
-void
-reset_completer_word_break_chars ()
-{
- rl_completer_word_break_characters = perform_hostname_completion ? savestring (bash_completer_word_break_characters) : savestring (bash_nohostname_word_break_characters);
-}
-
-/* When this function returns, rl_completer_word_break_characters points to
- dynamically allocated memory. */
-int
-enable_hostname_completion (on_or_off)
- int on_or_off;
-{
- int old_value;
- char *at, *nv, *nval;
-
- old_value = perform_hostname_completion;
-
- if (on_or_off)
- {
- perform_hostname_completion = 1;
- rl_special_prefixes = "$@";
- }
- else
- {
- perform_hostname_completion = 0;
- rl_special_prefixes = "$";
- }
-
- /* Now we need to figure out how to appropriately modify and assign
- rl_completer_word_break_characters depending on whether we want
- hostname completion on or off. */
-
- /* If this is the first time this has been called
- (bash_readline_initialized == 0), use the sames values as before, but
- allocate new memory for rl_completer_word_break_characters. */
-
- if (bash_readline_initialized == 0 &&
- (rl_completer_word_break_characters == 0 ||
- rl_completer_word_break_characters == rl_basic_word_break_characters))
- {
- if (on_or_off)
- rl_completer_word_break_characters = savestring (bash_completer_word_break_characters);
- else
- rl_completer_word_break_characters = savestring (bash_nohostname_word_break_characters);
- }
- else
- {
- /* See if we have anything to do. */
- at = strchr (rl_completer_word_break_characters, '@');
- if ((at == 0 && on_or_off == 0) || (at != 0 && on_or_off != 0))
- return old_value;
-
- /* We have something to do. Do it. */
- nval = (char *)xmalloc (strlen (rl_completer_word_break_characters) + 1 + on_or_off);
-
- if (on_or_off == 0)
- {
- /* Turn it off -- just remove `@' from word break chars. We want
- to remove all occurrences of `@' from the char list, so we loop
- rather than just copy the rest of the list over AT. */
- for (nv = nval, at = rl_completer_word_break_characters; *at; )
- if (*at != '@')
- *nv++ = *at++;
- else
- at++;
- *nv = '\0';
- }
- else
- {
- nval[0] = '@';
- strcpy (nval + 1, rl_completer_word_break_characters);
- }
-
- free (rl_completer_word_break_characters);
- rl_completer_word_break_characters = nval;
- }
-
- return (old_value);
-}
-
-/* Called once from parse.y if we are going to use readline. */
-void
-initialize_readline ()
-{
- rl_command_func_t *func;
- char kseq[2];
-
- if (bash_readline_initialized)
- return;
-
- rl_terminal_name = get_string_value ("TERM");
- rl_instream = stdin;
- rl_outstream = stderr;
-
- /* Allow conditional parsing of the ~/.inputrc file. */
- rl_readline_name = "Bash";
-
- /* Add bindable names before calling rl_initialize so they may be
- referenced in the various inputrc files. */
- rl_add_defun ("shell-expand-line", shell_expand_line, -1);
-#ifdef BANG_HISTORY
- rl_add_defun ("history-expand-line", history_expand_line, -1);
- rl_add_defun ("magic-space", tcsh_magic_space, -1);
-#endif
-
- rl_add_defun ("shell-forward-word", bash_forward_shellword, -1);
- rl_add_defun ("shell-backward-word", bash_backward_shellword, -1);
- rl_add_defun ("shell-kill-word", bash_kill_shellword, -1);
- rl_add_defun ("shell-backward-kill-word", bash_backward_kill_shellword, -1);
-
-#ifdef ALIAS
- rl_add_defun ("alias-expand-line", alias_expand_line, -1);
-# ifdef BANG_HISTORY
- rl_add_defun ("history-and-alias-expand-line", history_and_alias_expand_line, -1);
-# endif
-#endif
-
- /* Backwards compatibility. */
- rl_add_defun ("insert-last-argument", rl_yank_last_arg, -1);
-
- rl_add_defun ("operate-and-get-next", operate_and_get_next, -1);
- rl_add_defun ("display-shell-version", display_shell_version, -1);
- rl_add_defun ("edit-and-execute-command", emacs_edit_and_execute_command, -1);
-
-#if defined (BRACE_COMPLETION)
- rl_add_defun ("complete-into-braces", bash_brace_completion, -1);
-#endif
-
-#if defined (SPECIFIC_COMPLETION_FUNCTIONS)
- rl_add_defun ("complete-filename", bash_complete_filename, -1);
- rl_add_defun ("possible-filename-completions", bash_possible_filename_completions, -1);
- rl_add_defun ("complete-username", bash_complete_username, -1);
- rl_add_defun ("possible-username-completions", bash_possible_username_completions, -1);
- rl_add_defun ("complete-hostname", bash_complete_hostname, -1);
- rl_add_defun ("possible-hostname-completions", bash_possible_hostname_completions, -1);
- rl_add_defun ("complete-variable", bash_complete_variable, -1);
- rl_add_defun ("possible-variable-completions", bash_possible_variable_completions, -1);
- rl_add_defun ("complete-command", bash_complete_command, -1);
- rl_add_defun ("possible-command-completions", bash_possible_command_completions, -1);
- rl_add_defun ("glob-complete-word", bash_glob_complete_word, -1);
- rl_add_defun ("glob-expand-word", bash_glob_expand_word, -1);
- rl_add_defun ("glob-list-expansions", bash_glob_list_expansions, -1);
-#endif
-
- rl_add_defun ("dynamic-complete-history", dynamic_complete_history, -1);
- rl_add_defun ("dabbrev-expand", bash_dabbrev_expand, -1);
-
- /* Bind defaults before binding our custom shell keybindings. */
- if (RL_ISSTATE(RL_STATE_INITIALIZED) == 0)
- rl_initialize ();
-
- /* Bind up our special shell functions. */
- rl_bind_key_if_unbound_in_map (CTRL('E'), shell_expand_line, emacs_meta_keymap);
-
-#ifdef BANG_HISTORY
- rl_bind_key_if_unbound_in_map ('^', history_expand_line, emacs_meta_keymap);
-#endif
-
- rl_bind_key_if_unbound_in_map (CTRL ('O'), operate_and_get_next, emacs_standard_keymap);
- rl_bind_key_if_unbound_in_map (CTRL ('V'), display_shell_version, emacs_ctlx_keymap);
-
- /* In Bash, the user can switch editing modes with "set -o [vi emacs]",
- so it is not necessary to allow C-M-j for context switching. Turn
- off this occasionally confusing behaviour. */
- kseq[0] = CTRL('J');
- kseq[1] = '\0';
- func = rl_function_of_keyseq (kseq, emacs_meta_keymap, (int *)NULL);
- if (func == rl_vi_editing_mode)
- rl_unbind_key_in_map (CTRL('J'), emacs_meta_keymap);
- kseq[0] = CTRL('M');
- func = rl_function_of_keyseq (kseq, emacs_meta_keymap, (int *)NULL);
- if (func == rl_vi_editing_mode)
- rl_unbind_key_in_map (CTRL('M'), emacs_meta_keymap);
-#if defined (VI_MODE)
- rl_unbind_key_in_map (CTRL('E'), vi_movement_keymap);
-#endif
-
-#if defined (BRACE_COMPLETION)
- rl_bind_key_if_unbound_in_map ('{', bash_brace_completion, emacs_meta_keymap); /*}*/
-#endif /* BRACE_COMPLETION */
-
-#if defined (SPECIFIC_COMPLETION_FUNCTIONS)
- rl_bind_key_if_unbound_in_map ('/', bash_complete_filename, emacs_meta_keymap);
- rl_bind_key_if_unbound_in_map ('/', bash_possible_filename_completions, emacs_ctlx_keymap);
-
- /* Have to jump through hoops here because there is a default binding for
- M-~ (rl_tilde_expand) */
- kseq[0] = '~';
- kseq[1] = '\0';
- func = rl_function_of_keyseq (kseq, emacs_meta_keymap, (int *)NULL);
- if (func == 0 || func == rl_tilde_expand)
- rl_bind_keyseq_in_map (kseq, bash_complete_username, emacs_meta_keymap);
-
- rl_bind_key_if_unbound_in_map ('~', bash_possible_username_completions, emacs_ctlx_keymap);
-
- rl_bind_key_if_unbound_in_map ('@', bash_complete_hostname, emacs_meta_keymap);
- rl_bind_key_if_unbound_in_map ('@', bash_possible_hostname_completions, emacs_ctlx_keymap);
-
- rl_bind_key_if_unbound_in_map ('$', bash_complete_variable, emacs_meta_keymap);
- rl_bind_key_if_unbound_in_map ('$', bash_possible_variable_completions, emacs_ctlx_keymap);
-
- rl_bind_key_if_unbound_in_map ('!', bash_complete_command, emacs_meta_keymap);
- rl_bind_key_if_unbound_in_map ('!', bash_possible_command_completions, emacs_ctlx_keymap);
-
- rl_bind_key_if_unbound_in_map ('g', bash_glob_complete_word, emacs_meta_keymap);
- rl_bind_key_if_unbound_in_map ('*', bash_glob_expand_word, emacs_ctlx_keymap);
- rl_bind_key_if_unbound_in_map ('g', bash_glob_list_expansions, emacs_ctlx_keymap);
-
-#endif /* SPECIFIC_COMPLETION_FUNCTIONS */
-
- kseq[0] = TAB;
- kseq[1] = '\0';
- func = rl_function_of_keyseq (kseq, emacs_meta_keymap, (int *)NULL);
- if (func == 0 || func == rl_tab_insert)
- rl_bind_key_in_map (TAB, dynamic_complete_history, emacs_meta_keymap);
-
- /* Tell the completer that we want a crack first. */
- rl_attempted_completion_function = attempt_shell_completion;
-
- /* Tell the completer that we might want to follow symbolic links or
- do other expansion on directory names. */
- set_directory_hook ();
-
- rl_filename_rewrite_hook = bash_filename_rewrite_hook;
-
- rl_filename_stat_hook = bash_filename_stat_hook;
-
- /* Tell the filename completer we want a chance to ignore some names. */
- rl_ignore_some_completions_function = filename_completion_ignore;
-
- /* Bind C-xC-e to invoke emacs and run result as commands. */
- rl_bind_key_if_unbound_in_map (CTRL ('E'), emacs_edit_and_execute_command, emacs_ctlx_keymap);
-#if defined (VI_MODE)
- rl_bind_key_if_unbound_in_map ('v', vi_edit_and_execute_command, vi_movement_keymap);
-# if defined (ALIAS)
- rl_bind_key_if_unbound_in_map ('@', posix_edit_macros, vi_movement_keymap);
-# endif
-
- rl_bind_key_in_map ('\\', bash_vi_complete, vi_movement_keymap);
- rl_bind_key_in_map ('*', bash_vi_complete, vi_movement_keymap);
- rl_bind_key_in_map ('=', bash_vi_complete, vi_movement_keymap);
-#endif
-
- rl_completer_quote_characters = "'\"";
-
- /* This sets rl_completer_word_break_characters and rl_special_prefixes
- to the appropriate values, depending on whether or not hostname
- completion is enabled. */
- enable_hostname_completion (perform_hostname_completion);
-
- /* characters that need to be quoted when appearing in filenames. */
- rl_filename_quote_characters = default_filename_quote_characters;
- set_filename_bstab (rl_filename_quote_characters);
-
- rl_filename_quoting_function = bash_quote_filename;
- rl_filename_dequoting_function = bash_dequote_filename;
- rl_char_is_quoted_p = char_is_quoted;
-
-#if 0
- /* This is superfluous and makes it impossible to use tab completion in
- vi mode even when explicitly binding it in ~/.inputrc. sv_strict_posix()
- should already have called posix_readline_initialize() when
- posixly_correct was set. */
- if (posixly_correct)
- posix_readline_initialize (1);
-#endif
-
- bash_readline_initialized = 1;
-}
-
-void
-bashline_reinitialize ()
-{
- bash_readline_initialized = 0;
-}
-
-void
-bashline_set_event_hook ()
-{
- rl_signal_event_hook = bash_event_hook;
-}
-
-void
-bashline_reset_event_hook ()
-{
- rl_signal_event_hook = 0;
-}
-
-/* On Sun systems at least, rl_attempted_completion_function can end up
- getting set to NULL, and rl_completion_entry_function set to do command
- word completion if Bash is interrupted while trying to complete a command
- word. This just resets all the completion functions to the right thing.
- It's called from throw_to_top_level(). */
-void
-bashline_reset ()
-{
- tilde_initialize ();
- rl_attempted_completion_function = attempt_shell_completion;
- rl_completion_entry_function = NULL;
- rl_ignore_some_completions_function = filename_completion_ignore;
- rl_filename_quote_characters = default_filename_quote_characters;
- set_filename_bstab (rl_filename_quote_characters);
-
- set_directory_hook ();
- rl_filename_stat_hook = bash_filename_stat_hook;
-
- bashline_reset_event_hook ();
-}
-
-/* Contains the line to push into readline. */
-static char *push_to_readline = (char *)NULL;
-
-/* Push the contents of push_to_readline into the
- readline buffer. */
-static int
-bash_push_line ()
-{
- if (push_to_readline)
- {
- rl_insert_text (push_to_readline);
- free (push_to_readline);
- push_to_readline = (char *)NULL;
- rl_startup_hook = old_rl_startup_hook;
- }
- return 0;
-}
-
-/* Call this to set the initial text for the next line to read
- from readline. */
-int
-bash_re_edit (line)
- char *line;
-{
- FREE (push_to_readline);
-
- push_to_readline = savestring (line);
- old_rl_startup_hook = rl_startup_hook;
- rl_startup_hook = bash_push_line;
-
- return (0);
-}
-
-static int
-display_shell_version (count, c)
- int count, c;
-{
- rl_crlf ();
- show_shell_version (0);
- putc ('\r', rl_outstream);
- fflush (rl_outstream);
- rl_on_new_line ();
- rl_redisplay ();
- return 0;
-}
-
-/* **************************************************************** */
-/* */
-/* Readline Stuff */
-/* */
-/* **************************************************************** */
-
-/* If the user requests hostname completion, then simply build a list
- of hosts, and complete from that forever more, or at least until
- HOSTFILE is unset. */
-
-/* THIS SHOULD BE A STRINGLIST. */
-/* The kept list of hostnames. */
-static char **hostname_list = (char **)NULL;
-
-/* The physical size of the above list. */
-static int hostname_list_size;
-
-/* The number of hostnames in the above list. */
-static int hostname_list_length;
-
-/* Whether or not HOSTNAME_LIST has been initialized. */
-int hostname_list_initialized = 0;
-
-/* Initialize the hostname completion table. */
-static void
-initialize_hostname_list ()
-{
- char *temp;
-
- temp = get_string_value ("HOSTFILE");
- if (temp == 0)
- temp = get_string_value ("hostname_completion_file");
- if (temp == 0)
- temp = DEFAULT_HOSTS_FILE;
-
- snarf_hosts_from_file (temp);
-
- if (hostname_list)
- hostname_list_initialized++;
-}
-
-/* Add NAME to the list of hosts. */
-static void
-add_host_name (name)
- char *name;
-{
- if (hostname_list_length + 2 > hostname_list_size)
- {
- hostname_list_size = (hostname_list_size + 32) - (hostname_list_size % 32);
- hostname_list = strvec_resize (hostname_list, hostname_list_size);
- }
-
- hostname_list[hostname_list_length++] = savestring (name);
- hostname_list[hostname_list_length] = (char *)NULL;
-}
-
-#define cr_whitespace(c) ((c) == '\r' || (c) == '\n' || whitespace(c))
-
-static void
-snarf_hosts_from_file (filename)
- char *filename;
-{
- FILE *file;
- char *temp, buffer[256], name[256];
- register int i, start;
-
- file = fopen (filename, "r");
- if (file == 0)
- return;
-
- while (temp = fgets (buffer, 255, file))
- {
- /* Skip to first character. */
- for (i = 0; buffer[i] && cr_whitespace (buffer[i]); i++)
- ;
-
- /* If comment or blank line, ignore. */
- if (buffer[i] == '\0' || buffer[i] == '#')
- continue;
-
- /* If `preprocessor' directive, do the include. */
- if (strncmp (buffer + i, "$include ", 9) == 0)
- {
- char *incfile, *t;
-
- /* Find start of filename. */
- for (incfile = buffer + i + 9; *incfile && whitespace (*incfile); incfile++)
- ;
-
- /* Find end of filename. */
- for (t = incfile; *t && cr_whitespace (*t) == 0; t++)
- ;
-
- *t = '\0';
-
- snarf_hosts_from_file (incfile);
- continue;
- }
-
- /* Skip internet address if present. */
- if (DIGIT (buffer[i]))
- for (; buffer[i] && cr_whitespace (buffer[i]) == 0; i++);
-
- /* Gobble up names. Each name is separated with whitespace. */
- while (buffer[i])
- {
- for (; cr_whitespace (buffer[i]); i++)
- ;
- if (buffer[i] == '\0' || buffer[i] == '#')
- break;
-
- /* Isolate the current word. */
- for (start = i; buffer[i] && cr_whitespace (buffer[i]) == 0; i++)
- ;
- if (i == start)
- continue;
- strncpy (name, buffer + start, i - start);
- name[i - start] = '\0';
- add_host_name (name);
- }
- }
- fclose (file);
-}
-
-/* Return the hostname list. */
-char **
-get_hostname_list ()
-{
- if (hostname_list_initialized == 0)
- initialize_hostname_list ();
- return (hostname_list);
-}
-
-void
-clear_hostname_list ()
-{
- register int i;
-
- if (hostname_list_initialized == 0)
- return;
- for (i = 0; i < hostname_list_length; i++)
- free (hostname_list[i]);
- hostname_list_length = hostname_list_initialized = 0;
-}
-
-/* Return a NULL terminated list of hostnames which begin with TEXT.
- Initialize the hostname list the first time if necessary.
- The array is malloc ()'ed, but not the individual strings. */
-static char **
-hostnames_matching (text)
- char *text;
-{
- register int i, len, nmatch, rsize;
- char **result;
-
- if (hostname_list_initialized == 0)
- initialize_hostname_list ();
-
- if (hostname_list_initialized == 0)
- return ((char **)NULL);
-
- /* Special case. If TEXT consists of nothing, then the whole list is
- what is desired. */
- if (*text == '\0')
- {
- result = strvec_create (1 + hostname_list_length);
- for (i = 0; i < hostname_list_length; i++)
- result[i] = hostname_list[i];
- result[i] = (char *)NULL;
- return (result);
- }
-
- /* Scan until found, or failure. */
- len = strlen (text);
- result = (char **)NULL;
- for (i = nmatch = rsize = 0; i < hostname_list_length; i++)
- {
- if (STREQN (text, hostname_list[i], len) == 0)
- continue;
-
- /* OK, it matches. Add it to the list. */
- if (nmatch >= (rsize - 1))
- {
- rsize = (rsize + 16) - (rsize % 16);
- result = strvec_resize (result, rsize);
- }
-
- result[nmatch++] = hostname_list[i];
- }
- if (nmatch)
- result[nmatch] = (char *)NULL;
- return (result);
-}
-
-/* The equivalent of the Korn shell C-o operate-and-get-next-history-line
- editing command. */
-static int saved_history_line_to_use = -1;
-static int last_saved_history_line = -1;
-
-#define HISTORY_FULL() (history_is_stifled () && history_length >= history_max_entries)
-
-static int
-set_saved_history ()
-{
- /* XXX - compensate for assumption that history was `shuffled' if it was
- actually not. */
- if (HISTORY_FULL () &&
- hist_last_line_added == 0 &&
- saved_history_line_to_use < history_length - 1)
- saved_history_line_to_use++;
-
- if (saved_history_line_to_use >= 0)
- {
- rl_get_previous_history (history_length - saved_history_line_to_use, 0);
- last_saved_history_line = saved_history_line_to_use;
- }
- saved_history_line_to_use = -1;
- rl_startup_hook = old_rl_startup_hook;
- return (0);
-}
-
-static int
-operate_and_get_next (count, c)
- int count, c;
-{
- int where;
-
- /* Accept the current line. */
- rl_newline (1, c);
-
- /* Find the current line, and find the next line to use. */
- where = where_history ();
-
- if (HISTORY_FULL () || (where >= history_length - 1))
- saved_history_line_to_use = where;
- else
- saved_history_line_to_use = where + 1;
-
- old_rl_startup_hook = rl_startup_hook;
- rl_startup_hook = set_saved_history;
-
- return 0;
-}
-
-/* This vi mode command causes VI_EDIT_COMMAND to be run on the current
- command being entered (if no explicit argument is given), otherwise on
- a command from the history file. */
-
-#define VI_EDIT_COMMAND "fc -e \"${VISUAL:-${EDITOR:-vi}}\""
-#define EMACS_EDIT_COMMAND "fc -e \"${VISUAL:-${EDITOR:-emacs}}\""
-#define POSIX_VI_EDIT_COMMAND "fc -e vi"
-
-static int
-edit_and_execute_command (count, c, editing_mode, edit_command)
- int count, c, editing_mode;
- char *edit_command;
-{
- char *command, *metaval;
- int r, rrs, metaflag;
- sh_parser_state_t ps;
-
- rrs = rl_readline_state;
- saved_command_line_count = current_command_line_count;
-
- /* Accept the current line. */
- rl_newline (1, c);
-
- if (rl_explicit_arg)
- {
- command = (char *)xmalloc (strlen (edit_command) + 8);
- sprintf (command, "%s %d", edit_command, count);
- }
- else
- {
- /* Take the command we were just editing, add it to the history file,
- then call fc to operate on it. We have to add a dummy command to
- the end of the history because fc ignores the last command (assumes
- it's supposed to deal with the command before the `fc'). */
- /* This breaks down when using command-oriented history and are not
- finished with the command, so we should not ignore the last command */
- using_history ();
- current_command_line_count++; /* for rl_newline above */
- bash_add_history (rl_line_buffer);
- current_command_line_count = 0; /* for dummy history entry */
- bash_add_history ("");
- history_lines_this_session++;
- using_history ();
- command = savestring (edit_command);
- }
-
- metaval = rl_variable_value ("input-meta");
- metaflag = RL_BOOLEAN_VARIABLE_VALUE (metaval);
-
- /* Now, POSIX.1-2001 and SUSv3 say that the commands executed from the
- temporary file should be placed into the history. We don't do that
- yet. */
- if (rl_deprep_term_function)
- (*rl_deprep_term_function) ();
- save_parser_state (&ps);
- r = parse_and_execute (command, (editing_mode == VI_EDITING_MODE) ? "v" : "C-xC-e", SEVAL_NOHIST);
- restore_parser_state (&ps);
- if (rl_prep_term_function)
- (*rl_prep_term_function) (metaflag);
-
- current_command_line_count = saved_command_line_count;
-
- /* Now erase the contents of the current line and undo the effects of the
- rl_accept_line() above. We don't even want to make the text we just
- executed available for undoing. */
- rl_line_buffer[0] = '\0'; /* XXX */
- rl_point = rl_end = 0;
- rl_done = 0;
- rl_readline_state = rrs;
-
- rl_forced_update_display ();
-
- return r;
-}
-
-#if defined (VI_MODE)
-static int
-vi_edit_and_execute_command (count, c)
- int count, c;
-{
- if (posixly_correct)
- return (edit_and_execute_command (count, c, VI_EDITING_MODE, POSIX_VI_EDIT_COMMAND));
- else
- return (edit_and_execute_command (count, c, VI_EDITING_MODE, VI_EDIT_COMMAND));
-}
-#endif /* VI_MODE */
-
-static int
-emacs_edit_and_execute_command (count, c)
- int count, c;
-{
- return (edit_and_execute_command (count, c, EMACS_EDITING_MODE, EMACS_EDIT_COMMAND));
-}
-
-#if defined (ALIAS)
-static int
-posix_edit_macros (count, key)
- int count, key;
-{
- int c;
- char alias_name[3], *alias_value, *macro;
-
- c = rl_read_key ();
- alias_name[0] = '_';
- alias_name[1] = c;
- alias_name[2] = '\0';
-
- alias_value = get_alias_value (alias_name);
- if (alias_value && *alias_value)
- {
- macro = savestring (alias_value);
- rl_push_macro_input (macro);
- }
- return 0;
-}
-#endif
-
-/* Bindable commands that move `shell-words': that is, sequences of
- non-unquoted-metacharacters. */
-
-#define WORDDELIM(c) (shellmeta(c) || shellblank(c))
-
-static int
-bash_forward_shellword (count, key)
- int count, key;
-{
- size_t slen;
- int sindex, c, p;
- DECLARE_MBSTATE;
-
- if (count < 0)
- return (bash_backward_shellword (-count, key));
-
- /* The tricky part of this is deciding whether or not the first character
- we're on is an unquoted metacharacter. Not completely handled yet. */
- /* XXX - need to test this stuff with backslash-escaped shell
- metacharacters and unclosed single- and double-quoted strings. */
-
- p = rl_point;
- slen = rl_end;
-
- while (count)
- {
- if (p == rl_end)
- {
- rl_point = rl_end;
- return 0;
- }
-
- /* Are we in a quoted string? If we are, move to the end of the quoted
- string and continue the outer loop. We only want quoted strings, not
- backslash-escaped characters, but char_is_quoted doesn't
- differentiate. */
- if (char_is_quoted (rl_line_buffer, p) && p > 0 && rl_line_buffer[p-1] != '\\')
- {
- do
- ADVANCE_CHAR (rl_line_buffer, slen, p);
- while (p < rl_end && char_is_quoted (rl_line_buffer, p));
- count--;
- continue;
- }
-
- /* Rest of code assumes we are not in a quoted string. */
- /* Move forward until we hit a non-metacharacter. */
- while (p < rl_end && (c = rl_line_buffer[p]) && WORDDELIM (c))
- {
- switch (c)
- {
- default:
- ADVANCE_CHAR (rl_line_buffer, slen, p);
- continue; /* straight back to loop, don't increment p */
- case '\\':
- if (p < rl_end && rl_line_buffer[p])
- ADVANCE_CHAR (rl_line_buffer, slen, p);
- break;
- case '\'':
- p = skip_to_delim (rl_line_buffer, ++p, "'", SD_NOJMP);
- break;
- case '"':
- p = skip_to_delim (rl_line_buffer, ++p, "\"", SD_NOJMP);
- break;
- }
-
- if (p < rl_end)
- p++;
- }
-
- if (rl_line_buffer[p] == 0 || p == rl_end)
- {
- rl_point = rl_end;
- rl_ding ();
- return 0;
- }
-
- /* Now move forward until we hit a non-quoted metacharacter or EOL */
- while (p < rl_end && (c = rl_line_buffer[p]) && WORDDELIM (c) == 0)
- {
- switch (c)
- {
- default:
- ADVANCE_CHAR (rl_line_buffer, slen, p);
- continue; /* straight back to loop, don't increment p */
- case '\\':
- if (p < rl_end && rl_line_buffer[p])
- ADVANCE_CHAR (rl_line_buffer, slen, p);
- break;
- case '\'':
- p = skip_to_delim (rl_line_buffer, ++p, "'", SD_NOJMP);
- break;
- case '"':
- p = skip_to_delim (rl_line_buffer, ++p, "\"", SD_NOJMP);
- break;
- }
-
- if (p < rl_end)
- p++;
- }
-
- if (p == rl_end || rl_line_buffer[p] == 0)
- {
- rl_point = rl_end;
- return (0);
- }
-
- count--;
- }
-
- rl_point = p;
- return (0);
-}
-
-static int
-bash_backward_shellword (count, key)
- int count, key;
-{
- size_t slen;
- int sindex, c, p;
- DECLARE_MBSTATE;
-
- if (count < 0)
- return (bash_forward_shellword (-count, key));
-
- p = rl_point;
- slen = rl_end;
-
- while (count)
- {
- if (p == 0)
- {
- rl_point = 0;
- return 0;
- }
-
- /* Move backward until we hit a non-metacharacter. */
- while (p > 0)
- {
- c = rl_line_buffer[p];
- if (WORDDELIM (c) && char_is_quoted (rl_line_buffer, p) == 0)
- BACKUP_CHAR (rl_line_buffer, slen, p);
- break;
- }
-
- if (p == 0)
- {
- rl_point = 0;
- return 0;
- }
-
- /* Now move backward until we hit a metacharacter or BOL. */
- while (p > 0)
- {
- c = rl_line_buffer[p];
- if (WORDDELIM (c) && char_is_quoted (rl_line_buffer, p) == 0)
- break;
- BACKUP_CHAR (rl_line_buffer, slen, p);
- }
-
- count--;
- }
-
- rl_point = p;
- return 0;
-}
-
-static int
-bash_kill_shellword (count, key)
- int count, key;
-{
- int p;
-
- if (count < 0)
- return (bash_backward_kill_shellword (-count, key));
-
- p = rl_point;
- bash_forward_shellword (count, key);
-
- if (rl_point != p)
- rl_kill_text (p, rl_point);
-
- rl_point = p;
- if (rl_editing_mode == 1) /* 1 == emacs_mode */
- rl_mark = rl_point;
-
- return 0;
-}
-
-static int
-bash_backward_kill_shellword (count, key)
- int count, key;
-{
- int p;
-
- if (count < 0)
- return (bash_kill_shellword (-count, key));
-
- p = rl_point;
- bash_backward_shellword (count, key);
-
- if (rl_point != p)
- rl_kill_text (p, rl_point);
-
- if (rl_editing_mode == 1) /* 1 == emacs_mode */
- rl_mark = rl_point;
-
- return 0;
-}
-
-
-/* **************************************************************** */
-/* */
-/* How To Do Shell Completion */
-/* */
-/* **************************************************************** */
-
-#define COMMAND_SEPARATORS ";|&{(`"
-/* )} */
-#define COMMAND_SEPARATORS_PLUS_WS ";|&{(` \t"
-/* )} */
-
-/* check for redirections and other character combinations that are not
- command separators */
-static int
-check_redir (ti)
- int ti;
-{
- register int this_char, prev_char;
-
- /* Handle the two character tokens `>&', `<&', and `>|'.
- We are not in a command position after one of these. */
- this_char = rl_line_buffer[ti];
- prev_char = rl_line_buffer[ti - 1];
-
- if ((this_char == '&' && (prev_char == '<' || prev_char == '>')) ||
- (this_char == '|' && prev_char == '>'))
- return (1);
- else if (this_char == '{' && prev_char == '$') /*}*/
- return (1);
-#if 0 /* Not yet */
- else if (this_char == '(' && prev_char == '$') /*)*/
- return (1);
- else if (this_char == '(' && prev_char == '<') /*)*/
- return (1);
-#if defined (EXTENDED_GLOB)
- else if (extended_glob && this_char == '(' && prev_char == '!') /*)*/
- return (1);
-#endif
-#endif
- else if (char_is_quoted (rl_line_buffer, ti))
- return (1);
- return (0);
-}
-
-#if defined (PROGRAMMABLE_COMPLETION)
-/*
- * XXX - because of the <= start test, and setting os = s+1, this can
- * potentially return os > start. This is probably not what we want to
- * happen, but fix later after 2.05a-release.
- */
-static int
-find_cmd_start (start)
- int start;
-{
- register int s, os, ns;
-
- os = 0;
- /* Flags == SD_NOJMP only because we want to skip over command substitutions
- in assignment statements. Have to test whether this affects `standalone'
- command substitutions as individual words. */
- while (((s = skip_to_delim (rl_line_buffer, os, COMMAND_SEPARATORS, SD_NOJMP/*|SD_NOSKIPCMD*/)) <= start) &&
- rl_line_buffer[s])
- {
- /* Handle >| token crudely; treat as > not | */
- if (rl_line_buffer[s] == '|' && rl_line_buffer[s-1] == '>')
- {
- ns = skip_to_delim (rl_line_buffer, s+1, COMMAND_SEPARATORS, SD_NOJMP/*|SD_NOSKIPCMD*/);
- if (ns > start || rl_line_buffer[ns] == 0)
- return os;
- os = ns+1;
- continue;
- }
- os = s+1;
- }
- return os;
-}
-
-static int
-find_cmd_end (end)
- int end;
-{
- register int e;
-
- e = skip_to_delim (rl_line_buffer, end, COMMAND_SEPARATORS, SD_NOJMP);
- return e;
-}
-
-static char *
-find_cmd_name (start, sp, ep)
- int start;
- int *sp, *ep;
-{
- char *name;
- register int s, e;
-
- for (s = start; whitespace (rl_line_buffer[s]); s++)
- ;
-
- /* skip until a shell break character */
- e = skip_to_delim (rl_line_buffer, s, "()<>;&| \t\n", SD_NOJMP);
-
- name = substring (rl_line_buffer, s, e);
-
- if (sp)
- *sp = s;
- if (ep)
- *ep = e;
-
- return (name);
-}
-
-static char *
-prog_complete_return (text, matchnum)
- const char *text;
- int matchnum;
-{
- static int ind;
-
- if (matchnum == 0)
- ind = 0;
-
- if (prog_complete_matches == 0 || prog_complete_matches[ind] == 0)
- return (char *)NULL;
- return (prog_complete_matches[ind++]);
-}
-
-#endif /* PROGRAMMABLE_COMPLETION */
-
-/* Try and catch completion attempts that are syntax errors or otherwise
- invalid. */
-static int
-invalid_completion (text, ind)
- const char *text;
- int ind;
-{
- int pind;
-
- /* If we don't catch these here, the next clause will */
- if (ind > 0 && rl_line_buffer[ind] == '(' && /*)*/
- member (rl_line_buffer[ind-1], "$<>"))
- return 0;
-
- pind = ind - 1;
- while (pind > 0 && whitespace (rl_line_buffer[pind]))
- pind--;
- /* If we have only whitespace preceding a paren, it's valid */
- if (ind >= 0 && pind <= 0 && rl_line_buffer[ind] == '(') /*)*/
- return 0;
- /* Flag the invalid completions, which are mostly syntax errors */
- if (ind > 0 && rl_line_buffer[ind] == '(' && /*)*/
- member (rl_line_buffer[pind], COMMAND_SEPARATORS) == 0)
- return 1;
-
- return 0;
-}
-
-/* Do some completion on TEXT. The indices of TEXT in RL_LINE_BUFFER are
- at START and END. Return an array of matches, or NULL if none. */
-static char **
-attempt_shell_completion (text, start, end)
- const char *text;
- int start, end;
-{
- int in_command_position, ti, saveti, qc, dflags;
- char **matches, *command_separator_chars;
-#if defined (PROGRAMMABLE_COMPLETION)
- int have_progcomps, was_assignment;
-#endif
-
- command_separator_chars = COMMAND_SEPARATORS;
- matches = (char **)NULL;
- rl_ignore_some_completions_function = filename_completion_ignore;
-
- rl_filename_quote_characters = default_filename_quote_characters;
- set_filename_bstab (rl_filename_quote_characters);
- set_directory_hook ();
- rl_filename_stat_hook = bash_filename_stat_hook;
-
- /* Determine if this could be a command word. It is if it appears at
- the start of the line (ignoring preceding whitespace), or if it
- appears after a character that separates commands. It cannot be a
- command word if we aren't at the top-level prompt. */
- ti = start - 1;
- saveti = qc = -1;
-
- while ((ti > -1) && (whitespace (rl_line_buffer[ti])))
- ti--;
-
-#if 1
- /* If this is an open quote, maybe we're trying to complete a quoted
- command name. */
- if (ti >= 0 && (rl_line_buffer[ti] == '"' || rl_line_buffer[ti] == '\''))
- {
- qc = rl_line_buffer[ti];
- saveti = ti--;
- while (ti > -1 && (whitespace (rl_line_buffer[ti])))
- ti--;
- }
-#endif
-
- in_command_position = 0;
- if (ti < 0)
- {
- /* Only do command completion at the start of a line when we
- are prompting at the top level. */
- if (current_prompt_string == ps1_prompt)
- in_command_position++;
- else if (parser_in_command_position ())
- in_command_position++;
- }
- else if (member (rl_line_buffer[ti], command_separator_chars))
- {
- in_command_position++;
-
- if (check_redir (ti) == 1)
- in_command_position = 0;
- }
- else
- {
- /* This still could be in command position. It is possible
- that all of the previous words on the line are variable
- assignments. */
- }
-
- if (in_command_position && invalid_completion (text, ti))
- {
- rl_attempted_completion_over = 1;
- return ((char **)NULL);
- }
-
- /* Check that we haven't incorrectly flagged a closed command substitution
- as indicating we're in a command position. */
- if (in_command_position && ti >= 0 && rl_line_buffer[ti] == '`' &&
- *text != '`' && unclosed_pair (rl_line_buffer, end, "`") == 0)
- in_command_position = 0;
-
- /* Special handling for command substitution. If *TEXT is a backquote,
- it can be the start or end of an old-style command substitution, or
- unmatched. If it's unmatched, both calls to unclosed_pair will
- succeed. Don't bother if readline found a single quote and we are
- completing on the substring. */
- if (*text == '`' && rl_completion_quote_character != '\'' &&
- (in_command_position || (unclosed_pair (rl_line_buffer, start, "`") &&
- unclosed_pair (rl_line_buffer, end, "`"))))
- matches = rl_completion_matches (text, command_subst_completion_function);
-
-#if defined (PROGRAMMABLE_COMPLETION)
- /* Attempt programmable completion. */
- have_progcomps = prog_completion_enabled && (progcomp_size () > 0);
- if (matches == 0 && (in_command_position == 0 || text[0] == '\0') &&
- current_prompt_string == ps1_prompt)
- {
- int s, e, s1, e1, os, foundcs;
- char *n;
-
- /* XXX - don't free the members */
- if (prog_complete_matches)
- free (prog_complete_matches);
- prog_complete_matches = (char **)NULL;
-
- os = start;
- n = 0;
- s = find_cmd_start (os);
- e = find_cmd_end (end);
- do
- {
- /* Skip over assignment statements preceding a command name. If we
- don't find a command name at all, we can perform command name
- completion. If we find a partial command name, we should perform
- command name completion on it. */
- FREE (n);
- n = find_cmd_name (s, &s1, &e1);
- s = e1 + 1;
- }
- while (was_assignment = assignment (n, 0));
- s = s1; /* reset to index where name begins */
-
- /* s == index of where command name begins (reset above)
- e == end of current command, may be end of line
- s1 = index of where command name begins
- e1 == index of where command name ends
- start == index of where word to be completed begins
- end == index of where word to be completed ends
- if (s == start) we are doing command word completion for sure
- if (e1 == end) we are at the end of the command name and completing it */
- if (start == 0 && end == 0 && e != 0 && text[0] == '\0') /* beginning of non-empty line */
- foundcs = 0;
- else if (start == end && start == s1 && e != 0 && e1 > end) /* beginning of command name, leading whitespace */
- foundcs = 0;
- else if (e == 0 && e == s && text[0] == '\0' && have_progcomps) /* beginning of empty line */
- prog_complete_matches = programmable_completions ("_EmptycmD_", text, s, e, &foundcs);
- else if (start == end && text[0] == '\0' && s1 > start && whitespace (rl_line_buffer[start]))
- foundcs = 0; /* whitespace before command name */
- else if (e > s && was_assignment == 0 && e1 == end && rl_line_buffer[e] == 0 && whitespace (rl_line_buffer[e-1]) == 0)
- {
- /* not assignment statement, but still want to perform command
- completion if we are composing command word. */
- foundcs = 0;
- in_command_position = s == start && STREQ (n, text); /* XXX */
- }
- else if (e > s && was_assignment == 0 && have_progcomps)
- {
- prog_complete_matches = programmable_completions (n, text, s, e, &foundcs);
- /* command completion if programmable completion fails */
- in_command_position = s == start && STREQ (n, text); /* XXX */
- }
- /* empty command name following command separator */
- else if (s >= e && n[0] == '\0' && text[0] == '\0' && start > 0 &&
- was_assignment == 0 && member (rl_line_buffer[start-1], COMMAND_SEPARATORS))
- {
- foundcs = 0;
- in_command_position = 1;
- }
- else if (s >= e && n[0] == '\0' && text[0] == '\0' && start > 0)
- {
- foundcs = 0; /* empty command name following assignments */
- in_command_position = was_assignment;
- }
- else if (s == start && e == end && STREQ (n, text) && start > 0)
- {
- foundcs = 0; /* partial command name following assignments */
- in_command_position = 1;
- }
- else
- foundcs = 0;
- FREE (n);
- /* XXX - if we found a COMPSPEC for the command, just return whatever
- the programmable completion code returns, and disable the default
- filename completion that readline will do unless the COPT_DEFAULT
- option has been set with the `-o default' option to complete or
- compopt. */
- if (foundcs)
- {
- pcomp_set_readline_variables (foundcs, 1);
- /* Turn what the programmable completion code returns into what
- readline wants. I should have made compute_lcd_of_matches
- external... */
- matches = rl_completion_matches (text, prog_complete_return);
- if ((foundcs & COPT_DEFAULT) == 0)
- rl_attempted_completion_over = 1; /* no default */
- if (matches || ((foundcs & COPT_BASHDEFAULT) == 0))
- return (matches);
- }
- }
-#endif
-
- if (matches == 0)
- {
- dflags = 0;
- if (in_command_position)
- dflags |= DEFCOMP_CMDPOS;
- matches = bash_default_completion (text, start, end, qc, dflags);
- }
-
- return matches;
-}
-
-char **
-bash_default_completion (text, start, end, qc, compflags)
- const char *text;
- int start, end, qc, compflags;
-{
- char **matches, *t;
-
- matches = (char **)NULL;
-
- /* New posix-style command substitution or variable name? */
- if (!matches && *text == '$')
- {
- if (qc != '\'' && text[1] == '(') /* ) */
- matches = rl_completion_matches (text, command_subst_completion_function);
- else
- {
- matches = rl_completion_matches (text, variable_completion_function);
- if (matches && matches[0] && matches[1] == 0)
- {
- t = savestring (matches[0]);
- bash_filename_stat_hook (&t);
- /* doesn't use test_for_directory because that performs tilde
- expansion */
- if (file_isdir (t))
- rl_completion_append_character = '/';
- free (t);
- }
- }
- }
-
- /* If the word starts in `~', and there is no slash in the word, then
- try completing this word as a username. */
- if (matches == 0 && *text == '~' && mbschr (text, '/') == 0)
- matches = rl_completion_matches (text, rl_username_completion_function);
-
- /* Another one. Why not? If the word starts in '@', then look through
- the world of known hostnames for completion first. */
- if (matches == 0 && perform_hostname_completion && *text == '@')
- matches = rl_completion_matches (text, hostname_completion_function);
-
- /* And last, (but not least) if this word is in a command position, then
- complete over possible command names, including aliases, functions,
- and command names. */
- if (matches == 0 && (compflags & DEFCOMP_CMDPOS))
- {
- /* If END == START and text[0] == 0, we are trying to complete an empty
- command word. */
- if (no_empty_command_completion && end == start && text[0] == '\0')
- {
- matches = (char **)NULL;
- rl_ignore_some_completions_function = bash_ignore_everything;
- }
- else
- {
-#define CMD_IS_DIR(x) (absolute_pathname(x) == 0 && absolute_program(x) == 0 && *(x) != '~' && test_for_directory (x))
-
- dot_in_path = 0;
- matches = rl_completion_matches (text, command_word_completion_function);
-
- /* If we are attempting command completion and nothing matches, we
- do not want readline to perform filename completion for us. We
- still want to be able to complete partial pathnames, so set the
- completion ignore function to something which will remove
- filenames and leave directories in the match list. */
- if (matches == (char **)NULL)
- rl_ignore_some_completions_function = bash_ignore_filenames;
- else if (matches[1] == 0 && CMD_IS_DIR(matches[0]) && dot_in_path == 0)
- /* If we found a single match, without looking in the current
- directory (because it's not in $PATH), but the found name is
- also a command in the current directory, suppress appending any
- terminating character, since it's ambiguous. */
- {
- rl_completion_suppress_append = 1;
- rl_filename_completion_desired = 0;
- }
- else if (matches[0] && matches[1] && STREQ (matches[0], matches[1]) && CMD_IS_DIR (matches[0]))
- /* There are multiple instances of the same match (duplicate
- completions haven't yet been removed). In this case, all of
- the matches will be the same, and the duplicate removal code
- will distill them all down to one. We turn on
- rl_completion_suppress_append for the same reason as above.
- Remember: we only care if there's eventually a single unique
- completion. If there are multiple completions this won't
- make a difference and the problem won't occur. */
- {
- rl_completion_suppress_append = 1;
- rl_filename_completion_desired = 0;
- }
- }
- }
-
- /* This could be a globbing pattern, so try to expand it using pathname
- expansion. */
- if (!matches && glob_pattern_p (text))
- {
- matches = rl_completion_matches (text, glob_complete_word);
- /* A glob expression that matches more than one filename is problematic.
- If we match more than one filename, punt. */
- if (matches && matches[1] && rl_completion_type == TAB)
- {
- strvec_dispose (matches);
- matches = (char **)0;
- }
- else if (matches && matches[1] && rl_completion_type == '!')
- {
- rl_completion_suppress_append = 1;
- rl_filename_completion_desired = 0;
- }
- }
-
- return (matches);
-}
-
-static int
-bash_command_name_stat_hook (name)
- char **name;
-{
- char *cname, *result;
-
- /* If it's not something we're going to look up in $PATH, just call the
- normal filename stat hook. */
- if (absolute_program (*name))
- return (bash_filename_stat_hook (name));
-
- cname = *name;
- /* XXX - we could do something here with converting aliases, builtins,
- and functions into something that came out as executable, but we don't. */
- result = search_for_command (cname, 0);
- if (result)
- {
- *name = result;
- return 1;
- }
- return 0;
-}
-
-static int
-executable_completion (filename, searching_path)
- const char *filename;
- int searching_path;
-{
- char *f;
- int r;
-
- f = savestring (filename);
- bash_directory_completion_hook (&f);
-
- r = searching_path ? executable_file (f) : executable_or_directory (f);
- free (f);
- return r;
-}
-
-/* This is the function to call when the word to complete is in a position
- where a command word can be found. It grovels $PATH, looking for commands
- that match. It also scans aliases, function names, and the shell_builtin
- table. */
-char *
-command_word_completion_function (hint_text, state)
- const char *hint_text;
- int state;
-{
- static char *hint = (char *)NULL;
- static char *path = (char *)NULL;
- static char *val = (char *)NULL;
- static char *filename_hint = (char *)NULL;
- static char *fnhint = (char *)NULL;
- static char *dequoted_hint = (char *)NULL;
- static char *directory_part = (char *)NULL;
- static char **glob_matches = (char **)NULL;
- static int path_index, hint_len, dequoted_len, istate, igncase;
- static int mapping_over, local_index, searching_path, hint_is_dir;
- static int old_glob_ignore_case, globpat;
- static SHELL_VAR **varlist = (SHELL_VAR **)NULL;
-#if defined (ALIAS)
- static alias_t **alias_list = (alias_t **)NULL;
-#endif /* ALIAS */
- char *temp, *cval;
-
- /* We have to map over the possibilities for command words. If we have
- no state, then make one just for that purpose. */
- if (state == 0)
- {
- rl_filename_stat_hook = bash_command_name_stat_hook;
-
- if (dequoted_hint && dequoted_hint != hint)
- free (dequoted_hint);
- if (hint)
- free (hint);
-
- mapping_over = searching_path = 0;
- hint_is_dir = CMD_IS_DIR (hint_text);
- val = (char *)NULL;
-
- temp = rl_variable_value ("completion-ignore-case");
- igncase = RL_BOOLEAN_VARIABLE_VALUE (temp);
-
- if (glob_matches)
- {
- free (glob_matches);
- glob_matches = (char **)NULL;
- }
-
- globpat = glob_pattern_p (hint_text);
-
- /* If this is an absolute program name, do not check it against
- aliases, reserved words, functions or builtins. We must check
- whether or not it is unique, and, if so, whether that filename
- is executable. */
- if (globpat || absolute_program (hint_text))
- {
- /* Perform tilde expansion on what's passed, so we don't end up
- passing filenames with tildes directly to stat(). */
- if (*hint_text == '~')
- {
- hint = bash_tilde_expand (hint_text, 0);
- directory_part = savestring (hint_text);
- temp = strchr (directory_part, '/');
- if (temp)
- *temp = 0;
- else
- {
- free (directory_part);
- directory_part = (char *)NULL;
- }
- }
- else
- hint = savestring (hint_text);
-
- dequoted_hint = hint;
- /* If readline's completer found a quote character somewhere, but
- didn't set the quote character, there must have been a quote
- character embedded in the filename. It can't be at the start of
- the filename, so we need to dequote the filename before we look
- in the file system for it. */
- if (rl_completion_found_quote && rl_completion_quote_character == 0)
- {
- dequoted_hint = bash_dequote_filename (hint, 0);
- free (hint);
- hint = dequoted_hint;
- }
- dequoted_len = hint_len = strlen (hint);
-
- if (filename_hint)
- free (filename_hint);
-
- fnhint = filename_hint = savestring (hint);
-
- istate = 0;
-
- if (globpat)
- {
- mapping_over = 5;
- goto globword;
- }
- else
- {
- if (dircomplete_expand && path_dot_or_dotdot (filename_hint))
- {
- dircomplete_expand = 0;
- set_directory_hook ();
- dircomplete_expand = 1;
- }
- mapping_over = 4;
- goto inner;
- }
- }
-
- dequoted_hint = hint = savestring (hint_text);
- dequoted_len = hint_len = strlen (hint);
-
- if (rl_completion_found_quote && rl_completion_quote_character == 0)
- {
- dequoted_hint = bash_dequote_filename (hint, 0);
- dequoted_len = strlen (dequoted_hint);
- }
-
- path = get_string_value ("PATH");
- path_index = dot_in_path = 0;
-
- /* Initialize the variables for each type of command word. */
- local_index = 0;
-
- if (varlist)
- free (varlist);
-
- varlist = all_visible_functions ();
-
-#if defined (ALIAS)
- if (alias_list)
- free (alias_list);
-
- alias_list = all_aliases ();
-#endif /* ALIAS */
- }
-
- /* mapping_over says what we are currently hacking. Note that every case
- in this list must fall through when there are no more possibilities. */
-
- switch (mapping_over)
- {
- case 0: /* Aliases come first. */
-#if defined (ALIAS)
- while (alias_list && alias_list[local_index])
- {
- register char *alias;
-
- alias = alias_list[local_index++]->name;
-
- if (STREQN (alias, hint, hint_len))
- return (savestring (alias));
- }
-#endif /* ALIAS */
- local_index = 0;
- mapping_over++;
-
- case 1: /* Then shell reserved words. */
- {
- while (word_token_alist[local_index].word)
- {
- register char *reserved_word;
-
- reserved_word = word_token_alist[local_index++].word;
-
- if (STREQN (reserved_word, hint, hint_len))
- return (savestring (reserved_word));
- }
- local_index = 0;
- mapping_over++;
- }
-
- case 2: /* Then function names. */
- while (varlist && varlist[local_index])
- {
- register char *varname;
-
- varname = varlist[local_index++]->name;
-
- if (STREQN (varname, hint, hint_len))
- return (savestring (varname));
- }
- local_index = 0;
- mapping_over++;
-
- case 3: /* Then shell builtins. */
- for (; local_index < num_shell_builtins; local_index++)
- {
- /* Ignore it if it doesn't have a function pointer or if it
- is not currently enabled. */
- if (!shell_builtins[local_index].function ||
- (shell_builtins[local_index].flags & BUILTIN_ENABLED) == 0)
- continue;
-
- if (STREQN (shell_builtins[local_index].name, hint, hint_len))
- {
- int i = local_index++;
-
- return (savestring (shell_builtins[i].name));
- }
- }
- local_index = 0;
- mapping_over++;
- }
-
-globword:
- /* Limited support for completing command words with globbing chars. Only
- a single match (multiple matches that end up reducing the number of
- characters in the common prefix are bad) will ever be returned on
- regular completion. */
- if (globpat)
- {
- if (state == 0)
- {
- glob_ignore_case = igncase;
- glob_matches = shell_glob_filename (hint);
- glob_ignore_case = old_glob_ignore_case;
-
- if (GLOB_FAILED (glob_matches) || glob_matches == 0)
- {
- glob_matches = (char **)NULL;
- return ((char *)NULL);
- }
-
- local_index = 0;
-
- if (glob_matches[1] && rl_completion_type == TAB) /* multiple matches are bad */
- return ((char *)NULL);
- }
-
- while (val = glob_matches[local_index++])
- {
- if (executable_or_directory (val))
- {
- if (*hint_text == '~' && directory_part)
- {
- temp = maybe_restore_tilde (val, directory_part);
- free (val);
- val = temp;
- }
- return (val);
- }
- free (val);
- }
-
- glob_ignore_case = old_glob_ignore_case;
- return ((char *)NULL);
- }
-
- /* If the text passed is a directory in the current directory, return it
- as a possible match. Executables in directories in the current
- directory can be specified using relative pathnames and successfully
- executed even when `.' is not in $PATH. */
- if (hint_is_dir)
- {
- hint_is_dir = 0; /* only return the hint text once */
- return (savestring (hint_text));
- }
-
- /* Repeatedly call filename_completion_function while we have
- members of PATH left. Question: should we stat each file?
- Answer: we call executable_file () on each file. */
- outer:
-
- istate = (val != (char *)NULL);
-
- if (istate == 0)
- {
- char *current_path;
-
- /* Get the next directory from the path. If there is none, then we
- are all done. */
- if (path == 0 || path[path_index] == 0 ||
- (current_path = extract_colon_unit (path, &path_index)) == 0)
- return ((char *)NULL);
-
- searching_path = 1;
- if (*current_path == 0)
- {
- free (current_path);
- current_path = savestring (".");
- }
-
- if (*current_path == '~')
- {
- char *t;
-
- t = bash_tilde_expand (current_path, 0);
- free (current_path);
- current_path = t;
- }
-
- if (current_path[0] == '.' && current_path[1] == '\0')
- dot_in_path = 1;
-
- if (fnhint && fnhint != filename_hint)
- free (fnhint);
- if (filename_hint)
- free (filename_hint);
-
- filename_hint = sh_makepath (current_path, hint, 0);
- /* Need a quoted version (though it doesn't matter much in most
- cases) because rl_filename_completion_function dequotes the
- filename it gets, assuming that it's been quoted as part of
- the input line buffer. */
- if (strpbrk (filename_hint, "\"'\\"))
- fnhint = sh_backslash_quote (filename_hint, filename_bstab, 0);
- else
- fnhint = filename_hint;
- free (current_path); /* XXX */
- }
-
- inner:
- val = rl_filename_completion_function (fnhint, istate);
- if (mapping_over == 4 && dircomplete_expand)
- set_directory_hook ();
-
- istate = 1;
-
- if (val == 0)
- {
- /* If the hint text is an absolute program, then don't bother
- searching through PATH. */
- if (absolute_program (hint))
- return ((char *)NULL);
-
- goto outer;
- }
- else
- {
- int match, freetemp;
-
- if (absolute_program (hint))
- {
- if (igncase == 0)
- match = strncmp (val, hint, hint_len) == 0;
- else
- match = strncasecmp (val, hint, hint_len) == 0;
-
- /* If we performed tilde expansion, restore the original
- filename. */
- if (*hint_text == '~')
- temp = maybe_restore_tilde (val, directory_part);
- else
- temp = savestring (val);
- freetemp = 1;
- }
- else
- {
- temp = strrchr (val, '/');
-
- if (temp)
- {
- temp++;
- if (igncase == 0)
- freetemp = match = strncmp (temp, hint, hint_len) == 0;
- else
- freetemp = match = strncasecmp (temp, hint, hint_len) == 0;
- if (match)
- temp = savestring (temp);
- }
- else
- freetemp = match = 0;
- }
-
- /* If we have found a match, and it is an executable file, return it.
- We don't return directory names when searching $PATH, since the
- bash execution code won't find executables in directories which
- appear in directories in $PATH when they're specified using
- relative pathnames. */
-#if 0
- /* If we're not searching $PATH and we have a relative pathname, we
- need to re-canonicalize it before testing whether or not it's an
- executable or a directory so the shell treats .. relative to $PWD
- according to the physical/logical option. The shell already
- canonicalizes the directory name in order to tell readline where
- to look, so not doing it here will be inconsistent. */
- /* XXX -- currently not used -- will introduce more inconsistency,
- since shell does not canonicalize ../foo before passing it to
- shell_execve(). */
- if (match && searching_path == 0 && *val == '.')
- {
- char *t, *t1;
-
- t = get_working_directory ("command-word-completion");
- t1 = make_absolute (val, t);
- free (t);
- cval = sh_canonpath (t1, PATH_CHECKDOTDOT|PATH_CHECKEXISTS);
- }
- else
-#endif
- cval = val;
-
- if (match && executable_completion ((searching_path ? val : cval), searching_path))
- {
- if (cval != val)
- free (cval);
- free (val);
- val = ""; /* So it won't be NULL. */
- return (temp);
- }
- else
- {
- if (freetemp)
- free (temp);
- if (cval != val)
- free (cval);
- free (val);
- goto inner;
- }
- }
-}
-
-/* Completion inside an unterminated command substitution. */
-static char *
-command_subst_completion_function (text, state)
- const char *text;
- int state;
-{
- static char **matches = (char **)NULL;
- static const char *orig_start;
- static char *filename_text = (char *)NULL;
- static int cmd_index, start_len;
- char *value;
-
- if (state == 0)
- {
- if (filename_text)
- free (filename_text);
- orig_start = text;
- if (*text == '`')
- text++;
- else if (*text == '$' && text[1] == '(') /* ) */
- text += 2;
- /* If the text was quoted, suppress any quote character that the
- readline completion code would insert. */
- rl_completion_suppress_quote = 1;
- start_len = text - orig_start;
- filename_text = savestring (text);
- if (matches)
- free (matches);
-
- /*
- * At this point we can entertain the idea of re-parsing
- * `filename_text' into a (possibly incomplete) command name and
- * arguments, and doing completion based on that. This is
- * currently very rudimentary, but it is a small improvement.
- */
- for (value = filename_text + strlen (filename_text) - 1; value > filename_text; value--)
- if (whitespace (*value) || member (*value, COMMAND_SEPARATORS))
- break;
- if (value <= filename_text)
- matches = rl_completion_matches (filename_text, command_word_completion_function);
- else
- {
- value++;
- start_len += value - filename_text;
- if (whitespace (value[-1]))
- matches = rl_completion_matches (value, rl_filename_completion_function);
- else
- matches = rl_completion_matches (value, command_word_completion_function);
- }
-
- /* If there is more than one match, rl_completion_matches has already
- put the lcd in matches[0]. Skip over it. */
- cmd_index = matches && matches[0] && matches[1];
-
- /* If there's a single match and it's a directory, set the append char
- to the expected `/'. Otherwise, don't append anything. */
- if (matches && matches[0] && matches[1] == 0 && test_for_directory (matches[0]))
- rl_completion_append_character = '/';
- else
- rl_completion_suppress_append = 1;
- }
-
- if (matches == 0 || matches[cmd_index] == 0)
- {
- rl_filename_quoting_desired = 0; /* disable quoting */
- return ((char *)NULL);
- }
- else
- {
- value = (char *)xmalloc (1 + start_len + strlen (matches[cmd_index]));
-
- if (start_len == 1)
- value[0] = *orig_start;
- else
- strncpy (value, orig_start, start_len);
-
- strcpy (value + start_len, matches[cmd_index]);
-
- cmd_index++;
- return (value);
- }
-}
-
-/* Okay, now we write the entry_function for variable completion. */
-static char *
-variable_completion_function (text, state)
- const char *text;
- int state;
-{
- static char **varlist = (char **)NULL;
- static int varlist_index;
- static char *varname = (char *)NULL;
- static int namelen;
- static int first_char, first_char_loc;
-
- if (!state)
- {
- if (varname)
- free (varname);
-
- first_char_loc = 0;
- first_char = text[0];
-
- if (first_char == '$')
- first_char_loc++;
-
- if (text[first_char_loc] == '{')
- first_char_loc++;
-
- varname = savestring (text + first_char_loc);
-
- namelen = strlen (varname);
- if (varlist)
- strvec_dispose (varlist);
-
- varlist = all_variables_matching_prefix (varname);
- varlist_index = 0;
- }
-
- if (!varlist || !varlist[varlist_index])
- {
- return ((char *)NULL);
- }
- else
- {
- char *value;
-
- value = (char *)xmalloc (4 + strlen (varlist[varlist_index]));
-
- if (first_char_loc)
- {
- value[0] = first_char;
- if (first_char_loc == 2)
- value[1] = '{';
- }
-
- strcpy (value + first_char_loc, varlist[varlist_index]);
- if (first_char_loc == 2)
- strcat (value, "}");
-
- varlist_index++;
- return (value);
- }
-}
-
-/* How about a completion function for hostnames? */
-static char *
-hostname_completion_function (text, state)
- const char *text;
- int state;
-{
- static char **list = (char **)NULL;
- static int list_index = 0;
- static int first_char, first_char_loc;
-
- /* If we don't have any state, make some. */
- if (state == 0)
- {
- FREE (list);
-
- list = (char **)NULL;
-
- first_char_loc = 0;
- first_char = *text;
-
- if (first_char == '@')
- first_char_loc++;
-
- list = hostnames_matching ((char *)text+first_char_loc);
- list_index = 0;
- }
-
- if (list && list[list_index])
- {
- char *t;
-
- t = (char *)xmalloc (2 + strlen (list[list_index]));
- *t = first_char;
- strcpy (t + first_char_loc, list[list_index]);
- list_index++;
- return (t);
- }
-
- return ((char *)NULL);
-}
-
-/*
- * A completion function for service names from /etc/services (or wherever).
- */
-char *
-bash_servicename_completion_function (text, state)
- const char *text;
- int state;
-{
-#if defined (__WIN32__) || defined (__OPENNT) || !defined (HAVE_GETSERVENT)
- return ((char *)NULL);
-#else
- static char *sname = (char *)NULL;
- static struct servent *srvent;
- static int snamelen, firstc;
- char *value;
- char **alist, *aentry;
- int afound;
-
- if (state == 0)
- {
- FREE (sname);
- firstc = *text;
-
- sname = savestring (text);
- snamelen = strlen (sname);
- setservent (0);
- }
-
- while (srvent = getservent ())
- {
- afound = 0;
- if (snamelen == 0 || (STREQN (sname, srvent->s_name, snamelen)))
- break;
- /* Not primary, check aliases */
- for (alist = srvent->s_aliases; *alist; alist++)
- {
- aentry = *alist;
- if (STREQN (sname, aentry, snamelen))
- {
- afound = 1;
- break;
- }
- }
-
- if (afound)
- break;
- }
-
- if (srvent == 0)
- {
- endservent ();
- return ((char *)NULL);
- }
-
- value = afound ? savestring (aentry) : savestring (srvent->s_name);
- return value;
-#endif
-}
-
-/*
- * A completion function for group names from /etc/group (or wherever).
- */
-char *
-bash_groupname_completion_function (text, state)
- const char *text;
- int state;
-{
-#if defined (__WIN32__) || defined (__OPENNT) || !defined (HAVE_GRP_H)
- return ((char *)NULL);
-#else
- static char *gname = (char *)NULL;
- static struct group *grent;
- static int gnamelen;
- char *value;
-
- if (state == 0)
- {
- FREE (gname);
- gname = savestring (text);
- gnamelen = strlen (gname);
-
- setgrent ();
- }
-
- while (grent = getgrent ())
- {
- if (gnamelen == 0 || (STREQN (gname, grent->gr_name, gnamelen)))
- break;
- }
-
- if (grent == 0)
- {
- endgrent ();
- return ((char *)NULL);
- }
-
- value = savestring (grent->gr_name);
- return (value);
-#endif
-}
-
-/* Functions to perform history and alias expansions on the current line. */
-
-#if defined (BANG_HISTORY)
-/* Perform history expansion on the current line. If no history expansion
- is done, pre_process_line() returns what it was passed, so we need to
- allocate a new line here. */
-static char *
-history_expand_line_internal (line)
- char *line;
-{
- char *new_line;
- int old_verify;
-
- old_verify = hist_verify;
- hist_verify = 0;
- new_line = pre_process_line (line, 0, 0);
- hist_verify = old_verify;
-
- return (new_line == line) ? savestring (line) : new_line;
-}
-#endif
-
-/* There was an error in expansion. Let the preprocessor print
- the error here. */
-static void
-cleanup_expansion_error ()
-{
- char *to_free;
-#if defined (BANG_HISTORY)
- int old_verify;
-
- old_verify = hist_verify;
- hist_verify = 0;
-#endif
-
- fprintf (rl_outstream, "\r\n");
- to_free = pre_process_line (rl_line_buffer, 1, 0);
-#if defined (BANG_HISTORY)
- hist_verify = old_verify;
-#endif
- if (to_free != rl_line_buffer)
- FREE (to_free);
- putc ('\r', rl_outstream);
- rl_forced_update_display ();
-}
-
-/* If NEW_LINE differs from what is in the readline line buffer, add an
- undo record to get from the readline line buffer contents to the new
- line and make NEW_LINE the current readline line. */
-static void
-maybe_make_readline_line (new_line)
- char *new_line;
-{
- if (strcmp (new_line, rl_line_buffer) != 0)
- {
- rl_point = rl_end;
-
- rl_add_undo (UNDO_BEGIN, 0, 0, 0);
- rl_delete_text (0, rl_point);
- rl_point = rl_end = rl_mark = 0;
- rl_insert_text (new_line);
- rl_add_undo (UNDO_END, 0, 0, 0);
- }
-}
-
-/* Make NEW_LINE be the current readline line. This frees NEW_LINE. */
-static void
-set_up_new_line (new_line)
- char *new_line;
-{
- int old_point, at_end;
-
- old_point = rl_point;
- at_end = rl_point == rl_end;
-
- /* If the line was history and alias expanded, then make that
- be one thing to undo. */
- maybe_make_readline_line (new_line);
- free (new_line);
-
- /* Place rl_point where we think it should go. */
- if (at_end)
- rl_point = rl_end;
- else if (old_point < rl_end)
- {
- rl_point = old_point;
- if (!whitespace (rl_line_buffer[rl_point]))
- rl_forward_word (1, 0);
- }
-}
-
-#if defined (ALIAS)
-/* Expand aliases in the current readline line. */
-static int
-alias_expand_line (count, ignore)
- int count, ignore;
-{
- char *new_line;
-
- new_line = alias_expand (rl_line_buffer);
-
- if (new_line)
- {
- set_up_new_line (new_line);
- return (0);
- }
- else
- {
- cleanup_expansion_error ();
- return (1);
- }
-}
-#endif
-
-#if defined (BANG_HISTORY)
-/* History expand the line. */
-static int
-history_expand_line (count, ignore)
- int count, ignore;
-{
- char *new_line;
-
- new_line = history_expand_line_internal (rl_line_buffer);
-
- if (new_line)
- {
- set_up_new_line (new_line);
- return (0);
- }
- else
- {
- cleanup_expansion_error ();
- return (1);
- }
-}
-
-/* Expand history substitutions in the current line and then insert a
- space (hopefully close to where we were before). */
-static int
-tcsh_magic_space (count, ignore)
- int count, ignore;
-{
- int dist_from_end, old_point;
-
- old_point = rl_point;
- dist_from_end = rl_end - rl_point;
- if (history_expand_line (count, ignore) == 0)
- {
- /* Try a simple heuristic from Stephen Gildea <gildea@intouchsys.com>.
- This works if all expansions were before rl_point or if no expansions
- were performed. */
- rl_point = (old_point == 0) ? old_point : rl_end - dist_from_end;
- rl_insert (1, ' ');
- return (0);
- }
- else
- return (1);
-}
-#endif /* BANG_HISTORY */
-
-/* History and alias expand the line. */
-static int
-history_and_alias_expand_line (count, ignore)
- int count, ignore;
-{
- char *new_line;
-
- new_line = 0;
-#if defined (BANG_HISTORY)
- new_line = history_expand_line_internal (rl_line_buffer);
-#endif
-
-#if defined (ALIAS)
- if (new_line)
- {
- char *alias_line;
-
- alias_line = alias_expand (new_line);
- free (new_line);
- new_line = alias_line;
- }
-#endif /* ALIAS */
-
- if (new_line)
- {
- set_up_new_line (new_line);
- return (0);
- }
- else
- {
- cleanup_expansion_error ();
- return (1);
- }
-}
-
-/* History and alias expand the line, then perform the shell word
- expansions by calling expand_string. This can't use set_up_new_line()
- because we want the variable expansions as a separate undo'able
- set of operations. */
-static int
-shell_expand_line (count, ignore)
- int count, ignore;
-{
- char *new_line;
- WORD_LIST *expanded_string;
-
- new_line = 0;
-#if defined (BANG_HISTORY)
- new_line = history_expand_line_internal (rl_line_buffer);
-#endif
-
-#if defined (ALIAS)
- if (new_line)
- {
- char *alias_line;
-
- alias_line = alias_expand (new_line);
- free (new_line);
- new_line = alias_line;
- }
-#endif /* ALIAS */
-
- if (new_line)
- {
- int old_point = rl_point;
- int at_end = rl_point == rl_end;
-
- /* If the line was history and alias expanded, then make that
- be one thing to undo. */
- maybe_make_readline_line (new_line);
- free (new_line);
-
- /* If there is variable expansion to perform, do that as a separate
- operation to be undone. */
- new_line = savestring (rl_line_buffer);
- expanded_string = expand_string (new_line, 0);
- FREE (new_line);
- if (expanded_string == 0)
- {
- new_line = (char *)xmalloc (1);
- new_line[0] = '\0';
- }
- else
- {
- new_line = string_list (expanded_string);
- dispose_words (expanded_string);
- }
-
- maybe_make_readline_line (new_line);
- free (new_line);
-
- /* Place rl_point where we think it should go. */
- if (at_end)
- rl_point = rl_end;
- else if (old_point < rl_end)
- {
- rl_point = old_point;
- if (!whitespace (rl_line_buffer[rl_point]))
- rl_forward_word (1, 0);
- }
- return 0;
- }
- else
- {
- cleanup_expansion_error ();
- return 1;
- }
-}
-
-/* If FIGNORE is set, then don't match files with the given suffixes when
- completing filenames. If only one of the possibilities has an acceptable
- suffix, delete the others, else just return and let the completer
- signal an error. It is called by the completer when real
- completions are done on filenames by the completer's internal
- function, not for completion lists (M-?) and not on "other"
- completion types, such as hostnames or commands. */
-
-static struct ignorevar fignore =
-{
- "FIGNORE",
- (struct ign *)0,
- 0,
- (char *)0,
- (sh_iv_item_func_t *) 0,
-};
-
-static void
-_ignore_completion_names (names, name_func)
- char **names;
- sh_ignore_func_t *name_func;
-{
- char **newnames;
- int idx, nidx;
- char **oldnames;
- int oidx;
-
- /* If there is only one completion, see if it is acceptable. If it is
- not, free it up. In any case, short-circuit and return. This is a
- special case because names[0] is not the prefix of the list of names
- if there is only one completion; it is the completion itself. */
- if (names[1] == (char *)0)
- {
- if (force_fignore)
- if ((*name_func) (names[0]) == 0)
- {
- free (names[0]);
- names[0] = (char *)NULL;
- }
-
- return;
- }
-
- /* Allocate space for array to hold list of pointers to matching
- filenames. The pointers are copied back to NAMES when done. */
- for (nidx = 1; names[nidx]; nidx++)
- ;
- newnames = strvec_create (nidx + 1);
-
- if (force_fignore == 0)
- {
- oldnames = strvec_create (nidx - 1);
- oidx = 0;
- }
-
- newnames[0] = names[0];
- for (idx = nidx = 1; names[idx]; idx++)
- {
- if ((*name_func) (names[idx]))
- newnames[nidx++] = names[idx];
- else if (force_fignore == 0)
- oldnames[oidx++] = names[idx];
- else
- free (names[idx]);
- }
-
- newnames[nidx] = (char *)NULL;
-
- /* If none are acceptable then let the completer handle it. */
- if (nidx == 1)
- {
- if (force_fignore)
- {
- free (names[0]);
- names[0] = (char *)NULL;
- }
- else
- free (oldnames);
-
- free (newnames);
- return;
- }
-
- if (force_fignore == 0)
- {
- while (oidx)
- free (oldnames[--oidx]);
- free (oldnames);
- }
-
- /* If only one is acceptable, copy it to names[0] and return. */
- if (nidx == 2)
- {
- free (names[0]);
- names[0] = newnames[1];
- names[1] = (char *)NULL;
- free (newnames);
- return;
- }
-
- /* Copy the acceptable names back to NAMES, set the new array end,
- and return. */
- for (nidx = 1; newnames[nidx]; nidx++)
- names[nidx] = newnames[nidx];
- names[nidx] = (char *)NULL;
- free (newnames);
-}
-
-static int
-name_is_acceptable (name)
- const char *name;
-{
- struct ign *p;
- int nlen;
-
- for (nlen = strlen (name), p = fignore.ignores; p->val; p++)
- {
- if (nlen > p->len && p->len > 0 && STREQ (p->val, &name[nlen - p->len]))
- return (0);
- }
-
- return (1);
-}
-
-#if 0
-static int
-ignore_dot_names (name)
- char *name;
-{
- return (name[0] != '.');
-}
-#endif
-
-static int
-filename_completion_ignore (names)
- char **names;
-{
-#if 0
- if (glob_dot_filenames == 0)
- _ignore_completion_names (names, ignore_dot_names);
-#endif
-
- setup_ignore_patterns (&fignore);
-
- if (fignore.num_ignores == 0)
- return 0;
-
- _ignore_completion_names (names, name_is_acceptable);
-
- return 0;
-}
-
-/* Return 1 if NAME is a directory. NAME undergoes tilde expansion. */
-static int
-test_for_directory (name)
- const char *name;
-{
- char *fn;
- int r;
-
- fn = bash_tilde_expand (name, 0);
- r = file_isdir (fn);
- free (fn);
-
- return (r);
-}
-
-/* Remove files from NAMES, leaving directories. */
-static int
-bash_ignore_filenames (names)
- char **names;
-{
- _ignore_completion_names (names, test_for_directory);
- return 0;
-}
-
-static int
-return_zero (name)
- const char *name;
-{
- return 0;
-}
-
-static int
-bash_ignore_everything (names)
- char **names;
-{
- _ignore_completion_names (names, return_zero);
- return 0;
-}
-
-/* Replace a tilde-prefix in VAL with a `~', assuming the user typed it. VAL
- is an expanded filename. DIRECTORY_PART is the tilde-prefix portion
- of the un-tilde-expanded version of VAL (what the user typed). */
-static char *
-restore_tilde (val, directory_part)
- char *val, *directory_part;
-{
- int l, vl, dl2, xl;
- char *dh2, *expdir, *ret;
-
- vl = strlen (val);
-
- /* We need to duplicate the expansions readline performs on the directory
- portion before passing it to our completion function. */
- dh2 = directory_part ? bash_dequote_filename (directory_part, 0) : 0;
- bash_directory_expansion (&dh2);
- dl2 = strlen (dh2);
-
- expdir = bash_tilde_expand (directory_part, 0);
- xl = strlen (expdir);
- free (expdir);
-
- /*
- dh2 = unexpanded but dequoted tilde-prefix
- dl2 = length of tilde-prefix
- expdir = tilde-expanded tilde-prefix
- xl = length of expanded tilde-prefix
- l = length of remainder after tilde-prefix
- */
- l = (vl - xl) + 1;
-
- ret = (char *)xmalloc (dl2 + 2 + l);
- strcpy (ret, dh2);
- strcpy (ret + dl2, val + xl);
-
- free (dh2);
- return (ret);
-}
-
-static char *
-maybe_restore_tilde (val, directory_part)
- char *val, *directory_part;
-{
- rl_icppfunc_t *save;
- char *ret;
-
- save = (dircomplete_expand == 0) ? save_directory_hook () : (rl_icppfunc_t *)0;
- ret = restore_tilde (val, directory_part);
- if (save)
- restore_directory_hook (save);
- return ret;
-}
-
-/* Simulate the expansions that will be performed by
- rl_filename_completion_function. This must be called with the address of
- a pointer to malloc'd memory. */
-static void
-bash_directory_expansion (dirname)
- char **dirname;
-{
- char *d, *nd;
-
- d = savestring (*dirname);
-
- if ((rl_directory_rewrite_hook) && (*rl_directory_rewrite_hook) (&d))
- {
- free (*dirname);
- *dirname = d;
- }
- else if (rl_directory_completion_hook && (*rl_directory_completion_hook) (&d))
- {
- free (*dirname);
- *dirname = d;
- }
- else if (rl_completion_found_quote)
- {
- nd = bash_dequote_filename (d, rl_completion_quote_character);
- free (*dirname);
- free (d);
- *dirname = nd;
- }
-}
-
-/* If necessary, rewrite directory entry */
-static char *
-bash_filename_rewrite_hook (fname, fnlen)
- char *fname;
- int fnlen;
-{
- char *conv;
-
- conv = fnx_fromfs (fname, fnlen);
- if (conv != fname)
- conv = savestring (conv);
- return conv;
-}
-
-/* Functions to save and restore the appropriate directory hook */
-/* This is not static so the shopt code can call it */
-void
-set_directory_hook ()
-{
- if (dircomplete_expand)
- {
- rl_directory_completion_hook = bash_directory_completion_hook;
- rl_directory_rewrite_hook = (rl_icppfunc_t *)0;
- }
- else
- {
- rl_directory_rewrite_hook = bash_directory_completion_hook;
- rl_directory_completion_hook = (rl_icppfunc_t *)0;
- }
-}
-
-static rl_icppfunc_t *
-save_directory_hook ()
-{
- rl_icppfunc_t *ret;
-
- if (dircomplete_expand)
- {
- ret = rl_directory_completion_hook;
- rl_directory_completion_hook = (rl_icppfunc_t *)NULL;
- }
- else
- {
- ret = rl_directory_rewrite_hook;
- rl_directory_rewrite_hook = (rl_icppfunc_t *)NULL;
- }
-
- return ret;
-}
-
-static void
-restore_directory_hook (hookf)
- rl_icppfunc_t *hookf;
-{
- if (dircomplete_expand)
- rl_directory_completion_hook = hookf;
- else
- rl_directory_rewrite_hook = hookf;
-}
-
-/* Expand a filename before the readline completion code passes it to stat(2).
- The filename will already have had tilde expansion performed. */
-static int
-bash_filename_stat_hook (dirname)
- char **dirname;
-{
- char *local_dirname, *new_dirname, *t;
- int should_expand_dirname, return_value;
- WORD_LIST *wl;
- struct stat sb;
-
- local_dirname = *dirname;
- should_expand_dirname = return_value = 0;
- if (t = mbschr (local_dirname, '$'))
- should_expand_dirname = '$';
- else if (t = mbschr (local_dirname, '`')) /* XXX */
- should_expand_dirname = '`';
-
-#if defined (HAVE_LSTAT)
- if (should_expand_dirname && lstat (local_dirname, &sb) == 0)
-#else
- if (should_expand_dirname && stat (local_dirname, &sb) == 0)
-#endif
- should_expand_dirname = 0;
-
- if (should_expand_dirname)
- {
- new_dirname = savestring (local_dirname);
- wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB); /* does the right thing */
- if (wl)
- {
- free (new_dirname);
- new_dirname = string_list (wl);
- /* Tell the completer we actually expanded something and change
- *dirname only if we expanded to something non-null -- stat
- behaves unpredictably when passed null or empty strings */
- if (new_dirname && *new_dirname)
- {
- free (local_dirname); /* XXX */
- local_dirname = *dirname = new_dirname;
- return_value = STREQ (local_dirname, *dirname) == 0;
- }
- else
- free (new_dirname);
- dispose_words (wl);
- }
- else
- free (new_dirname);
- }
-
- /* This is very similar to the code in bash_directory_completion_hook below,
- but without spelling correction and not worrying about whether or not
- we change relative pathnames. */
- if (no_symbolic_links == 0 && (local_dirname[0] != '.' || local_dirname[1]))
- {
- char *temp1, *temp2;
-
- t = get_working_directory ("symlink-hook");
- temp1 = make_absolute (local_dirname, t);
- free (t);
- temp2 = sh_canonpath (temp1, PATH_CHECKDOTDOT|PATH_CHECKEXISTS);
-
- /* If we can't canonicalize, bail. */
- if (temp2 == 0)
- {
- free (temp1);
- return return_value;
- }
-
- free (local_dirname);
- *dirname = temp2;
- free (temp1);
- }
-
- return (return_value);
-}
-
-/* Handle symbolic link references and other directory name
- expansions while hacking completion. This should return 1 if it modifies
- the DIRNAME argument, 0 otherwise. It should make sure not to modify
- DIRNAME if it returns 0. */
-static int
-bash_directory_completion_hook (dirname)
- char **dirname;
-{
- char *local_dirname, *new_dirname, *t;
- int return_value, should_expand_dirname, nextch, closer;
- WORD_LIST *wl;
- struct stat sb;
-
- return_value = should_expand_dirname = nextch = closer = 0;
- local_dirname = *dirname;
-
- if (t = mbschr (local_dirname, '$'))
- {
- should_expand_dirname = '$';
- nextch = t[1];
- /* Deliberately does not handle the deprecated $[...] arithmetic
- expansion syntax */
- if (nextch == '(')
- closer = ')';
- else if (nextch == '{')
- closer = '}';
- else
- nextch = 0;
- }
- else if (local_dirname[0] == '~')
- should_expand_dirname = '~';
- else
- {
- t = mbschr (local_dirname, '`');
- if (t && unclosed_pair (local_dirname, strlen (local_dirname), "`") == 0)
- should_expand_dirname = '`';
- }
-
-#if defined (HAVE_LSTAT)
- if (should_expand_dirname && lstat (local_dirname, &sb) == 0)
-#else
- if (should_expand_dirname && stat (local_dirname, &sb) == 0)
-#endif
- should_expand_dirname = 0;
-
- if (should_expand_dirname)
- {
- new_dirname = savestring (local_dirname);
- wl = expand_prompt_string (new_dirname, 0, W_NOCOMSUB); /* does the right thing */
- if (wl)
- {
- *dirname = string_list (wl);
- /* Tell the completer to replace the directory name only if we
- actually expanded something. */
- return_value = STREQ (local_dirname, *dirname) == 0;
- free (local_dirname);
- free (new_dirname);
- dispose_words (wl);
- local_dirname = *dirname;
- /* XXX - change rl_filename_quote_characters here based on
- should_expand_dirname/nextch/closer. This is the only place
- custom_filename_quote_characters is modified. */
- if (rl_filename_quote_characters && *rl_filename_quote_characters)
- {
- int i, j, c;
- i = strlen (default_filename_quote_characters);
- custom_filename_quote_characters = xrealloc (custom_filename_quote_characters, i+1);
- for (i = j = 0; c = default_filename_quote_characters[i]; i++)
- {
- if (c == should_expand_dirname || c == nextch || c == closer)
- continue;
- custom_filename_quote_characters[j++] = c;
- }
- custom_filename_quote_characters[j] = '\0';
- rl_filename_quote_characters = custom_filename_quote_characters;
- set_filename_bstab (rl_filename_quote_characters);
- }
- }
- else
- {
- free (new_dirname);
- free (local_dirname);
- *dirname = (char *)xmalloc (1);
- **dirname = '\0';
- return 1;
- }
- }
- else
- {
- /* Dequote the filename even if we don't expand it. */
- new_dirname = bash_dequote_filename (local_dirname, rl_completion_quote_character);
- return_value = STREQ (local_dirname, new_dirname) == 0;
- free (local_dirname);
- local_dirname = *dirname = new_dirname;
- }
-
- /* no_symbolic_links == 0 -> use (default) logical view of the file system.
- local_dirname[0] == '.' && local_dirname[1] == '/' means files in the
- current directory (./).
- local_dirname[0] == '.' && local_dirname[1] == 0 means relative pathnames
- in the current directory (e.g., lib/sh).
- XXX - should we do spelling correction on these? */
-
- /* This is test as it was in bash-4.2: skip relative pathnames in current
- directory. Change test to
- (local_dirname[0] != '.' || (local_dirname[1] && local_dirname[1] != '/'))
- if we want to skip paths beginning with ./ also. */
- if (no_symbolic_links == 0 && (local_dirname[0] != '.' || local_dirname[1]))
- {
- char *temp1, *temp2;
- int len1, len2;
-
- /* If we have a relative path
- (local_dirname[0] != '/' && local_dirname[0] != '.')
- that is canonical after appending it to the current directory, then
- temp1 = temp2+'/'
- That is,
- strcmp (temp1, temp2) == 0
- after adding a slash to temp2 below. It should be safe to not
- change those.
- */
- t = get_working_directory ("symlink-hook");
- temp1 = make_absolute (local_dirname, t);
- free (t);
- temp2 = sh_canonpath (temp1, PATH_CHECKDOTDOT|PATH_CHECKEXISTS);
-
- /* Try spelling correction if initial canonicalization fails. Make
- sure we are set to replace the directory name with the results so
- subsequent directory checks don't fail. */
- if (temp2 == 0 && dircomplete_spelling && dircomplete_expand)
- {
- temp2 = dirspell (temp1);
- if (temp2)
- {
- free (temp1);
- temp1 = temp2;
- temp2 = sh_canonpath (temp1, PATH_CHECKDOTDOT|PATH_CHECKEXISTS);
- return_value |= temp2 != 0;
- }
- }
- /* If we can't canonicalize, bail. */
- if (temp2 == 0)
- {
- free (temp1);
- return return_value;
- }
- len1 = strlen (temp1);
- if (temp1[len1 - 1] == '/')
- {
- len2 = strlen (temp2);
- if (len2 > 2) /* don't append `/' to `/' or `//' */
- {
- temp2 = (char *)xrealloc (temp2, len2 + 2);
- temp2[len2] = '/';
- temp2[len2 + 1] = '\0';
- }
- }
-
- /* dircomplete_expand_relpath == 0 means we want to leave relative
- pathnames that are unchanged by canonicalization alone.
- *local_dirname != '/' && *local_dirname != '.' == relative pathname
- (consistent with general.c:absolute_pathname())
- temp1 == temp2 (after appending a slash to temp2) means the pathname
- is not changed by canonicalization as described above. */
- if (dircomplete_expand_relpath || ((local_dirname[0] != '/' && local_dirname[0] != '.') && STREQ (temp1, temp2) == 0))
- return_value |= STREQ (local_dirname, temp2) == 0;
- free (local_dirname);
- *dirname = temp2;
- free (temp1);
- }
-
- return (return_value);
-}
-
-static char **history_completion_array = (char **)NULL;
-static int harry_size;
-static int harry_len;
-
-static void
-build_history_completion_array ()
-{
- register int i, j;
- HIST_ENTRY **hlist;
- char **tokens;
-
- /* First, clear out the current dynamic history completion list. */
- if (harry_size)
- {
- strvec_dispose (history_completion_array);
- history_completion_array = (char **)NULL;
- harry_size = 0;
- harry_len = 0;
- }
-
- /* Next, grovel each line of history, making each shell-sized token
- a separate entry in the history_completion_array. */
- hlist = history_list ();
-
- if (hlist)
- {
- for (i = 0; hlist[i]; i++)
- ;
- for ( --i; i >= 0; i--)
- {
- /* Separate each token, and place into an array. */
- tokens = history_tokenize (hlist[i]->line);
-
- for (j = 0; tokens && tokens[j]; j++)
- {
- if (harry_len + 2 > harry_size)
- history_completion_array = strvec_resize (history_completion_array, harry_size += 10);
-
- history_completion_array[harry_len++] = tokens[j];
- history_completion_array[harry_len] = (char *)NULL;
- }
- free (tokens);
- }
-
- /* Sort the complete list of tokens. */
- if (dabbrev_expand_active == 0)
- qsort (history_completion_array, harry_len, sizeof (char *), (QSFUNC *)strvec_strcmp);
- }
-}
-
-static char *
-history_completion_generator (hint_text, state)
- const char *hint_text;
- int state;
-{
- static int local_index, len;
- static const char *text;
-
- /* If this is the first call to the generator, then initialize the
- list of strings to complete over. */
- if (state == 0)
- {
- if (dabbrev_expand_active) /* This is kind of messy */
- rl_completion_suppress_append = 1;
- local_index = 0;
- build_history_completion_array ();
- text = hint_text;
- len = strlen (text);
- }
-
- while (history_completion_array && history_completion_array[local_index])
- {
- if (strncmp (text, history_completion_array[local_index++], len) == 0)
- return (savestring (history_completion_array[local_index - 1]));
- }
- return ((char *)NULL);
-}
-
-static int
-dynamic_complete_history (count, key)
- int count, key;
-{
- int r;
- rl_compentry_func_t *orig_func;
- rl_completion_func_t *orig_attempt_func;
- rl_compignore_func_t *orig_ignore_func;
-
- orig_func = rl_completion_entry_function;
- orig_attempt_func = rl_attempted_completion_function;
- orig_ignore_func = rl_ignore_some_completions_function;
-
- rl_completion_entry_function = history_completion_generator;
- rl_attempted_completion_function = (rl_completion_func_t *)NULL;
- rl_ignore_some_completions_function = filename_completion_ignore;
-
- /* XXX - use rl_completion_mode here? */
- if (rl_last_func == dynamic_complete_history)
- r = rl_complete_internal ('?');
- else
- r = rl_complete_internal (TAB);
-
- rl_completion_entry_function = orig_func;
- rl_attempted_completion_function = orig_attempt_func;
- rl_ignore_some_completions_function = orig_ignore_func;
-
- return r;
-}
-
-static int
-bash_dabbrev_expand (count, key)
- int count, key;
-{
- int r, orig_suppress, orig_sort;
- rl_compentry_func_t *orig_func;
- rl_completion_func_t *orig_attempt_func;
- rl_compignore_func_t *orig_ignore_func;
-
- orig_func = rl_menu_completion_entry_function;
- orig_attempt_func = rl_attempted_completion_function;
- orig_ignore_func = rl_ignore_some_completions_function;
- orig_suppress = rl_completion_suppress_append;
- orig_sort = rl_sort_completion_matches;
-
- rl_menu_completion_entry_function = history_completion_generator;
- rl_attempted_completion_function = (rl_completion_func_t *)NULL;
- rl_ignore_some_completions_function = filename_completion_ignore;
- rl_filename_completion_desired = 0;
- rl_completion_suppress_append = 1;
- rl_sort_completion_matches = 0;
-
- /* XXX - use rl_completion_mode here? */
- dabbrev_expand_active = 1;
- if (rl_last_func == bash_dabbrev_expand)
- rl_last_func = rl_menu_complete;
- r = rl_menu_complete (count, key);
- dabbrev_expand_active = 0;
-
- rl_last_func = bash_dabbrev_expand;
- rl_menu_completion_entry_function = orig_func;
- rl_attempted_completion_function = orig_attempt_func;
- rl_ignore_some_completions_function = orig_ignore_func;
- rl_completion_suppress_append = orig_suppress;
- rl_sort_completion_matches = orig_sort;
-
- return r;
-}
-
-#if defined (SPECIFIC_COMPLETION_FUNCTIONS)
-static int
-bash_complete_username (ignore, ignore2)
- int ignore, ignore2;
-{
- return bash_complete_username_internal (rl_completion_mode (bash_complete_username));
-}
-
-static int
-bash_possible_username_completions (ignore, ignore2)
- int ignore, ignore2;
-{
- return bash_complete_username_internal ('?');
-}
-
-static int
-bash_complete_username_internal (what_to_do)
- int what_to_do;
-{
- return bash_specific_completion (what_to_do, rl_username_completion_function);
-}
-
-static int
-bash_complete_filename (ignore, ignore2)
- int ignore, ignore2;
-{
- return bash_complete_filename_internal (rl_completion_mode (bash_complete_filename));
-}
-
-static int
-bash_possible_filename_completions (ignore, ignore2)
- int ignore, ignore2;
-{
- return bash_complete_filename_internal ('?');
-}
-
-static int
-bash_complete_filename_internal (what_to_do)
- int what_to_do;
-{
- rl_compentry_func_t *orig_func;
- rl_completion_func_t *orig_attempt_func;
- rl_icppfunc_t *orig_dir_func;
- rl_compignore_func_t *orig_ignore_func;
- /*const*/ char *orig_rl_completer_word_break_characters;
- int r;
-
- orig_func = rl_completion_entry_function;
- orig_attempt_func = rl_attempted_completion_function;
- orig_ignore_func = rl_ignore_some_completions_function;
- orig_rl_completer_word_break_characters = rl_completer_word_break_characters;
-
- orig_dir_func = save_directory_hook ();
-
- rl_completion_entry_function = rl_filename_completion_function;
- rl_attempted_completion_function = (rl_completion_func_t *)NULL;
- rl_ignore_some_completions_function = filename_completion_ignore;
- rl_completer_word_break_characters = " \t\n\"\'";
-
- r = rl_complete_internal (what_to_do);
-
- rl_completion_entry_function = orig_func;
- rl_attempted_completion_function = orig_attempt_func;
- rl_ignore_some_completions_function = orig_ignore_func;
- rl_completer_word_break_characters = orig_rl_completer_word_break_characters;
-
- restore_directory_hook (orig_dir_func);
-
- return r;
-}
-
-static int
-bash_complete_hostname (ignore, ignore2)
- int ignore, ignore2;
-{
- return bash_complete_hostname_internal (rl_completion_mode (bash_complete_hostname));
-}
-
-static int
-bash_possible_hostname_completions (ignore, ignore2)
- int ignore, ignore2;
-{
- return bash_complete_hostname_internal ('?');
-}
-
-static int
-bash_complete_variable (ignore, ignore2)
- int ignore, ignore2;
-{
- return bash_complete_variable_internal (rl_completion_mode (bash_complete_variable));
-}
-
-static int
-bash_possible_variable_completions (ignore, ignore2)
- int ignore, ignore2;
-{
- return bash_complete_variable_internal ('?');
-}
-
-static int
-bash_complete_command (ignore, ignore2)
- int ignore, ignore2;
-{
- return bash_complete_command_internal (rl_completion_mode (bash_complete_command));
-}
-
-static int
-bash_possible_command_completions (ignore, ignore2)
- int ignore, ignore2;
-{
- return bash_complete_command_internal ('?');
-}
-
-static int
-bash_complete_hostname_internal (what_to_do)
- int what_to_do;
-{
- return bash_specific_completion (what_to_do, hostname_completion_function);
-}
-
-static int
-bash_complete_variable_internal (what_to_do)
- int what_to_do;
-{
- return bash_specific_completion (what_to_do, variable_completion_function);
-}
-
-static int
-bash_complete_command_internal (what_to_do)
- int what_to_do;
-{
- return bash_specific_completion (what_to_do, command_word_completion_function);
-}
-
-static char *globtext;
-static char *globorig;
-
-static char *
-glob_complete_word (text, state)
- const char *text;
- int state;
-{
- static char **matches = (char **)NULL;
- static int ind;
- int glen;
- char *ret, *ttext;
-
- if (state == 0)
- {
- rl_filename_completion_desired = 1;
- FREE (matches);
- if (globorig != globtext)
- FREE (globorig);
- FREE (globtext);
-
- ttext = bash_tilde_expand (text, 0);
-
- if (rl_explicit_arg)
- {
- globorig = savestring (ttext);
- glen = strlen (ttext);
- globtext = (char *)xmalloc (glen + 2);
- strcpy (globtext, ttext);
- globtext[glen] = '*';
- globtext[glen+1] = '\0';
- }
- else
- globtext = globorig = savestring (ttext);
-
- if (ttext != text)
- free (ttext);
-
- matches = shell_glob_filename (globtext);
- if (GLOB_FAILED (matches))
- matches = (char **)NULL;
- ind = 0;
- }
-
- ret = matches ? matches[ind] : (char *)NULL;
- ind++;
- return ret;
-}
-
-static int
-bash_glob_completion_internal (what_to_do)
- int what_to_do;
-{
- return bash_specific_completion (what_to_do, glob_complete_word);
-}
-
-/* A special quoting function so we don't end up quoting globbing characters
- in the word if there are no matches or multiple matches. */
-static char *
-bash_glob_quote_filename (s, rtype, qcp)
- char *s;
- int rtype;
- char *qcp;
-{
- if (globorig && qcp && *qcp == '\0' && STREQ (s, globorig))
- return (savestring (s));
- else
- return (bash_quote_filename (s, rtype, qcp));
-}
-
-static int
-bash_glob_complete_word (count, key)
- int count, key;
-{
- int r;
- rl_quote_func_t *orig_quoting_function;
-
- if (rl_editing_mode == EMACS_EDITING_MODE)
- rl_explicit_arg = 1; /* force `*' append */
- orig_quoting_function = rl_filename_quoting_function;
- rl_filename_quoting_function = bash_glob_quote_filename;
-
- r = bash_glob_completion_internal (rl_completion_mode (bash_glob_complete_word));
-
- rl_filename_quoting_function = orig_quoting_function;
- return r;
-}
-
-static int
-bash_glob_expand_word (count, key)
- int count, key;
-{
- return bash_glob_completion_internal ('*');
-}
-
-static int
-bash_glob_list_expansions (count, key)
- int count, key;
-{
- return bash_glob_completion_internal ('?');
-}
-
-static int
-bash_specific_completion (what_to_do, generator)
- int what_to_do;
- rl_compentry_func_t *generator;
-{
- rl_compentry_func_t *orig_func;
- rl_completion_func_t *orig_attempt_func;
- rl_compignore_func_t *orig_ignore_func;
- int r;
-
- orig_func = rl_completion_entry_function;
- orig_attempt_func = rl_attempted_completion_function;
- orig_ignore_func = rl_ignore_some_completions_function;
- rl_completion_entry_function = generator;
- rl_attempted_completion_function = NULL;
- rl_ignore_some_completions_function = orig_ignore_func;
-
- r = rl_complete_internal (what_to_do);
-
- rl_completion_entry_function = orig_func;
- rl_attempted_completion_function = orig_attempt_func;
- rl_ignore_some_completions_function = orig_ignore_func;
-
- return r;
-}
-
-#endif /* SPECIFIC_COMPLETION_FUNCTIONS */
-
-#if defined (VI_MODE)
-/* Completion, from vi mode's point of view. This is a modified version of
- rl_vi_complete which uses the bash globbing code to implement what POSIX
- specifies, which is to append a `*' and attempt filename generation (which
- has the side effect of expanding any globbing characters in the word). */
-static int
-bash_vi_complete (count, key)
- int count, key;
-{
-#if defined (SPECIFIC_COMPLETION_FUNCTIONS)
- int p, r;
- char *t;
-
- if ((rl_point < rl_end) && (!whitespace (rl_line_buffer[rl_point])))
- {
- if (!whitespace (rl_line_buffer[rl_point + 1]))
- rl_vi_end_word (1, 'E');
- rl_point++;
- }
-
- /* Find boundaries of current word, according to vi definition of a
- `bigword'. */
- t = 0;
- if (rl_point > 0)
- {
- p = rl_point;
- rl_vi_bWord (1, 'B');
- r = rl_point;
- rl_point = p;
- p = r;
-
- t = substring (rl_line_buffer, p, rl_point);
- }
-
- if (t && glob_pattern_p (t) == 0)
- rl_explicit_arg = 1; /* XXX - force glob_complete_word to append `*' */
- FREE (t);
-
- if (key == '*') /* Expansion and replacement. */
- r = bash_glob_expand_word (count, key);
- else if (key == '=') /* List possible completions. */
- r = bash_glob_list_expansions (count, key);
- else if (key == '\\') /* Standard completion */
- r = bash_glob_complete_word (count, key);
- else
- r = rl_complete (0, key);
-
- if (key == '*' || key == '\\')
- rl_vi_start_inserting (key, 1, 1);
-
- return (r);
-#else
- return rl_vi_complete (count, key);
-#endif /* !SPECIFIC_COMPLETION_FUNCTIONS */
-}
-#endif /* VI_MODE */
-
-/* Filename quoting for completion. */
-/* A function to strip unquoted quote characters (single quotes, double
- quotes, and backslashes). It allows single quotes to appear
- within double quotes, and vice versa. It should be smarter. */
-static char *
-bash_dequote_filename (text, quote_char)
- char *text;
- int quote_char;
-{
- char *ret, *p, *r;
- int l, quoted;
-
- l = strlen (text);
- ret = (char *)xmalloc (l + 1);
- for (quoted = quote_char, p = text, r = ret; p && *p; p++)
- {
- /* Allow backslash-escaped characters to pass through unscathed. */
- if (*p == '\\')
- {
- /* Backslashes are preserved within single quotes. */
- if (quoted == '\'')
- *r++ = *p;
- /* Backslashes are preserved within double quotes unless the
- character is one that is defined to be escaped */
- else if (quoted == '"' && ((sh_syntaxtab[p[1]] & CBSDQUOTE) == 0))
- *r++ = *p;
-
- *r++ = *++p;
- if (*p == '\0')
- return ret; /* XXX - was break; */
- continue;
- }
- /* Close quote. */
- if (quoted && *p == quoted)
- {
- quoted = 0;
- continue;
- }
- /* Open quote. */
- if (quoted == 0 && (*p == '\'' || *p == '"'))
- {
- quoted = *p;
- continue;
- }
- *r++ = *p;
- }
- *r = '\0';
- return ret;
-}
-
-/* Quote characters that the readline completion code would treat as
- word break characters with backslashes. Pass backslash-quoted
- characters through without examination. */
-static char *
-quote_word_break_chars (text)
- char *text;
-{
- char *ret, *r, *s;
- int l;
-
- l = strlen (text);
- ret = (char *)xmalloc ((2 * l) + 1);
- for (s = text, r = ret; *s; s++)
- {
- /* Pass backslash-quoted characters through, including the backslash. */
- if (*s == '\\')
- {
- *r++ = '\\';
- *r++ = *++s;
- if (*s == '\0')
- break;
- continue;
- }
- /* OK, we have an unquoted character. Check its presence in
- rl_completer_word_break_characters. */
- if (mbschr (rl_completer_word_break_characters, *s))
- *r++ = '\\';
- /* XXX -- check for standalone tildes here and backslash-quote them */
- if (s == text && *s == '~' && file_exists (text))
- *r++ = '\\';
- *r++ = *s;
- }
- *r = '\0';
- return ret;
-}
-
-/* Use characters in STRING to populate the table of characters that should
- be backslash-quoted. The table will be used for sh_backslash_quote from
- this file. */
-static void
-set_filename_bstab (string)
- const char *string;
-{
- const char *s;
-
- memset (filename_bstab, 0, sizeof (filename_bstab));
- for (s = string; s && *s; s++)
- filename_bstab[*s] = 1;
-}
-
-/* Quote a filename using double quotes, single quotes, or backslashes
- depending on the value of completion_quoting_style. If we're
- completing using backslashes, we need to quote some additional
- characters (those that readline treats as word breaks), so we call
- quote_word_break_chars on the result. This returns newly-allocated
- memory. */
-static char *
-bash_quote_filename (s, rtype, qcp)
- char *s;
- int rtype;
- char *qcp;
-{
- char *rtext, *mtext, *ret;
- int rlen, cs;
-
- rtext = (char *)NULL;
-
- /* If RTYPE == MULT_MATCH, it means that there is
- more than one match. In this case, we do not add
- the closing quote or attempt to perform tilde
- expansion. If RTYPE == SINGLE_MATCH, we try
- to perform tilde expansion, because single and double
- quotes inhibit tilde expansion by the shell. */
-
- cs = completion_quoting_style;
- /* Might need to modify the default completion style based on *qcp,
- since it's set to any user-provided opening quote. We also change
- to single-quoting if there is no user-provided opening quote and
- the word being completed contains newlines, since those are not
- quoted correctly using backslashes (a backslash-newline pair is
- special to the shell parser). */
- if (*qcp == '\0' && cs == COMPLETE_BSQUOTE && mbschr (s, '\n'))
- cs = COMPLETE_SQUOTE;
- else if (*qcp == '"')
- cs = COMPLETE_DQUOTE;
- else if (*qcp == '\'')
- cs = COMPLETE_SQUOTE;
-#if defined (BANG_HISTORY)
- else if (*qcp == '\0' && history_expansion && cs == COMPLETE_DQUOTE &&
- history_expansion_inhibited == 0 && mbschr (s, '!'))
- cs = COMPLETE_BSQUOTE;
-
- if (*qcp == '"' && history_expansion && cs == COMPLETE_DQUOTE &&
- history_expansion_inhibited == 0 && mbschr (s, '!'))
- {
- cs = COMPLETE_BSQUOTE;
- *qcp = '\0';
- }
-#endif
-
- /* Don't tilde-expand backslash-quoted filenames, since only single and
- double quotes inhibit tilde expansion. */
- mtext = s;
- if (mtext[0] == '~' && rtype == SINGLE_MATCH && cs != COMPLETE_BSQUOTE)
- mtext = bash_tilde_expand (s, 0);
-
- switch (cs)
- {
- case COMPLETE_DQUOTE:
- rtext = sh_double_quote (mtext);
- break;
- case COMPLETE_SQUOTE:
- rtext = sh_single_quote (mtext);
- break;
- case COMPLETE_BSQUOTE:
- rtext = sh_backslash_quote (mtext, complete_fullquote ? 0 : filename_bstab, 0);
- break;
- }
-
- if (mtext != s)
- free (mtext);
-
- /* We may need to quote additional characters: those that readline treats
- as word breaks that are not quoted by backslash_quote. */
- if (rtext && cs == COMPLETE_BSQUOTE)
- {
- mtext = quote_word_break_chars (rtext);
- free (rtext);
- rtext = mtext;
- }
-
- /* Leave the opening quote intact. The readline completion code takes
- care of avoiding doubled opening quotes. */
- if (rtext)
- {
- rlen = strlen (rtext);
- ret = (char *)xmalloc (rlen + 1);
- strcpy (ret, rtext);
- }
- else
- {
- ret = (char *)xmalloc (rlen = 1);
- ret[0] = '\0';
- }
-
- /* If there are multiple matches, cut off the closing quote. */
- if (rtype == MULT_MATCH && cs != COMPLETE_BSQUOTE)
- ret[rlen - 1] = '\0';
- free (rtext);
- return ret;
-}
-
-/* Support for binding readline key sequences to Unix commands. */
-static Keymap cmd_xmap;
-
-#ifdef _MINIX
-static void
-#else
-static int
-#endif
-putx(c)
- int c;
-{
- int x;
- x = putc (c, rl_outstream);
-#ifndef _MINIX
- return x;
-#endif
-}
-
-static int
-bash_execute_unix_command (count, key)
- int count; /* ignored */
- int key;
-{
- Keymap ckmap; /* current keymap */
- Keymap xkmap; /* unix command executing keymap */
- rl_command_func_t *func;
- int type;
- register int i, r;
- intmax_t mi;
- sh_parser_state_t ps;
- char *cmd, *value, *l, *l1, *ce;
- SHELL_VAR *v;
- char ibuf[INT_STRLEN_BOUND(int) + 1];
-
- /* First, we need to find the right command to execute. This is tricky,
- because we might have already indirected into another keymap, so we
- have to walk cmd_xmap using the entire key sequence. */
- cmd = (char *)rl_function_of_keyseq (rl_executing_keyseq, cmd_xmap, &type);
-
- if (cmd == 0 || type != ISMACR)
- {
- rl_crlf ();
- internal_error (_("bash_execute_unix_command: cannot find keymap for command"));
- rl_forced_update_display ();
- return 1;
- }
-
- ce = rl_get_termcap ("ce");
- if (ce) /* clear current line */
- {
- fprintf (rl_outstream, "\r");
- tputs (ce, 1, putx);
- fflush (rl_outstream);
- }
- else
- rl_crlf (); /* move to a new line */
-
- v = bind_variable ("READLINE_LINE", rl_line_buffer, 0);
- if (v)
- VSETATTR (v, att_exported);
- l = v ? value_cell (v) : 0;
- value = inttostr (rl_point, ibuf, sizeof (ibuf));
- v = bind_int_variable ("READLINE_POINT", value);
- if (v)
- VSETATTR (v, att_exported);
- array_needs_making = 1;
-
- save_parser_state (&ps);
- r = parse_and_execute (cmd, "bash_execute_unix_command", SEVAL_NOHIST|SEVAL_NOFREE);
- restore_parser_state (&ps);
-
- v = find_variable ("READLINE_LINE");
- l1 = v ? value_cell (v) : 0;
- if (l1 != l)
- maybe_make_readline_line (value_cell (v));
- v = find_variable ("READLINE_POINT");
- if (v && legal_number (value_cell (v), &mi))
- {
- i = mi;
- if (i != rl_point)
- {
- rl_point = i;
- if (rl_point > rl_end)
- rl_point = rl_end;
- else if (rl_point < 0)
- rl_point = 0;
- }
- }
-
- unbind_variable ("READLINE_LINE");
- unbind_variable ("READLINE_POINT");
- array_needs_making = 1;
-
- /* and restore the readline buffer and display after command execution. */
- /* If we clear the last line of the prompt above, redraw only that last
- line. If the command returns 124, we redraw unconditionally as in
- previous versions. */
- if (ce && r != 124)
- rl_redraw_prompt_last_line ();
- else
- rl_forced_update_display ();
-
- return 0;
-}
-
-int
-print_unix_command_map ()
-{
- Keymap save;
-
- save = rl_get_keymap ();
- rl_set_keymap (cmd_xmap);
- rl_macro_dumper (1);
- rl_set_keymap (save);
- return 0;
-}
-
-static void
-init_unix_command_map ()
-{
- cmd_xmap = rl_make_bare_keymap ();
-}
-
-static int
-isolate_sequence (string, ind, need_dquote, startp)
- char *string;
- int ind, need_dquote, *startp;
-{
- register int i;
- int c, passc, delim;
-
- for (i = ind; string[i] && whitespace (string[i]); i++)
- ;
- /* NEED_DQUOTE means that the first non-white character *must* be `"'. */
- if (need_dquote && string[i] != '"')
- {
- builtin_error (_("%s: first non-whitespace character is not `\"'"), string);
- return -1;
- }
-
- /* We can have delimited strings even if NEED_DQUOTE == 0, like the command
- string to bind the key sequence to. */
- delim = (string[i] == '"' || string[i] == '\'') ? string[i] : 0;
-
- if (startp)
- *startp = delim ? ++i : i;
-
- for (passc = 0; c = string[i]; i++)
- {
- if (passc)
- {
- passc = 0;
- continue;
- }
- if (c == '\\')
- {
- passc++;
- continue;
- }
- if (c == delim)
- break;
- }
-
- if (delim && string[i] != delim)
- {
- builtin_error (_("no closing `%c' in %s"), delim, string);
- return -1;
- }
-
- return i;
-}
-
-int
-bind_keyseq_to_unix_command (line)
- char *line;
-{
- Keymap kmap;
- char *kseq, *value;
- int i, kstart;
-
- if (cmd_xmap == 0)
- init_unix_command_map ();
-
- kmap = rl_get_keymap ();
-
- /* We duplicate some of the work done by rl_parse_and_bind here, but
- this code only has to handle `"keyseq": ["]command["]' and can
- generate an error for anything else. */
- i = isolate_sequence (line, 0, 1, &kstart);
- if (i < 0)
- return -1;
-
- /* Create the key sequence string to pass to rl_generic_bind */
- kseq = substring (line, kstart, i);
-
- for ( ; line[i] && line[i] != ':'; i++)
- ;
- if (line[i] != ':')
- {
- builtin_error (_("%s: missing colon separator"), line);
- FREE (kseq);
- return -1;
- }
-
- i = isolate_sequence (line, i + 1, 0, &kstart);
- if (i < 0)
- {
- FREE (kseq);
- return -1;
- }
-
- /* Create the value string containing the command to execute. */
- value = substring (line, kstart, i);
-
- /* Save the command to execute and the key sequence in the CMD_XMAP */
- rl_generic_bind (ISMACR, kseq, value, cmd_xmap);
-
- /* and bind the key sequence in the current keymap to a function that
- understands how to execute from CMD_XMAP */
- rl_bind_keyseq_in_map (kseq, bash_execute_unix_command, kmap);
-
- free (kseq);
- return 0;
-}
-
-/* Used by the programmable completion code. Complete TEXT as a filename,
- but return only directories as matches. Dequotes the filename before
- attempting to find matches. */
-char **
-bash_directory_completion_matches (text)
- const char *text;
-{
- char **m1;
- char *dfn;
- int qc;
-
- qc = rl_dispatching ? rl_completion_quote_character : 0;
- /* If rl_completion_found_quote != 0, rl_completion_matches will call the
- filename dequoting function, causing the directory name to be dequoted
- twice. */
- if (rl_dispatching && rl_completion_found_quote == 0)
- dfn = bash_dequote_filename ((char *)text, qc);
- else
- dfn = (char *)text;
- m1 = rl_completion_matches (dfn, rl_filename_completion_function);
- if (dfn != text)
- free (dfn);
-
- if (m1 == 0 || m1[0] == 0)
- return m1;
- /* We don't bother recomputing the lcd of the matches, because it will just
- get thrown away by the programmable completion code and recomputed
- later. */
- (void)bash_ignore_filenames (m1);
- return m1;
-}
-
-char *
-bash_dequote_text (text)
- const char *text;
-{
- char *dtxt;
- int qc;
-
- qc = (text[0] == '"' || text[0] == '\'') ? text[0] : 0;
- dtxt = bash_dequote_filename ((char *)text, qc);
- return (dtxt);
-}
-
-/* This event hook is designed to be called after readline receives a signal
- that interrupts read(2). It gives reasonable responsiveness to interrupts
- and fatal signals without executing too much code in a signal handler
- context. */
-static int
-bash_event_hook ()
-{
- /* If we're going to longjmp to top_level, make sure we clean up readline.
- check_signals will call QUIT, which will eventually longjmp to top_level,
- calling run_interrupt_trap along the way. The check for sigalrm_seen is
- to clean up the read builtin's state. */
- if (terminating_signal || interrupt_state || sigalrm_seen)
- rl_cleanup_after_signal ();
- bashline_reset_event_hook ();
- check_signals_and_traps (); /* XXX */
- return 0;
-}
-
-#endif /* READLINE */
+++ /dev/null
-/* common.c - utility functions for all builtins */
-
-/* Copyright (C) 1987-2010 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 <http://www.gnu.org/licenses/>.
-*/
-
-#include <config.h>
-
-#if defined (HAVE_UNISTD_H)
-# ifdef _MINIX
-# include <sys/types.h>
-# endif
-# include <unistd.h>
-#endif
-
-#include <stdio.h>
-#include <chartypes.h>
-#include "../bashtypes.h"
-#include "posixstat.h"
-#include <signal.h>
-
-#include <errno.h>
-
-#if defined (PREFER_STDARG)
-# include <stdarg.h>
-#else
-# include <varargs.h>
-#endif
-
-#include "../bashansi.h"
-#include "../bashintl.h"
-
-#define NEED_FPURGE_DECL
-
-#include "../shell.h"
-#include "maxpath.h"
-#include "../flags.h"
-#include "../jobs.h"
-#include "../builtins.h"
-#include "../input.h"
-#include "../execute_cmd.h"
-#include "../trap.h"
-#include "bashgetopt.h"
-#include "common.h"
-#include "builtext.h"
-#include <tilde/tilde.h>
-
-#if defined (HISTORY)
-# include "../bashhist.h"
-#endif
-
-#if !defined (errno)
-extern int errno;
-#endif /* !errno */
-
-extern int indirection_level, subshell_environment;
-extern int line_number;
-extern int last_command_exit_value;
-extern int trap_saved_exit_value;
-extern int running_trap;
-extern int posixly_correct;
-extern char *this_command_name, *shell_name;
-extern const char * const bash_getcwd_errstr;
-
-/* Used by some builtins and the mainline code. */
-sh_builtin_func_t *last_shell_builtin = (sh_builtin_func_t *)NULL;
-sh_builtin_func_t *this_shell_builtin = (sh_builtin_func_t *)NULL;
-
-/* **************************************************************** */
-/* */
-/* Error reporting, usage, and option processing */
-/* */
-/* **************************************************************** */
-
-/* This is a lot like report_error (), but it is for shell builtins
- instead of shell control structures, and it won't ever exit the
- shell. */
-
-static void
-builtin_error_prolog ()
-{
- char *name;
-
- name = get_name_for_error ();
- fprintf (stderr, "%s: ", name);
-
- if (interactive_shell == 0)
- fprintf (stderr, _("line %d: "), executing_line_number ());
-
- if (this_command_name && *this_command_name)
- fprintf (stderr, "%s: ", this_command_name);
-}
-
-void
-#if defined (PREFER_STDARG)
-builtin_error (const char *format, ...)
-#else
-builtin_error (format, va_alist)
- const char *format;
- va_dcl
-#endif
-{
- va_list args;
-
- builtin_error_prolog ();
-
- SH_VA_START (args, format);
-
- vfprintf (stderr, format, args);
- va_end (args);
- fprintf (stderr, "\n");
-}
-
-void
-#if defined (PREFER_STDARG)
-builtin_warning (const char *format, ...)
-#else
-builtin_warning (format, va_alist)
- const char *format;
- va_dcl
-#endif
-{
- va_list args;
-
- builtin_error_prolog ();
- fprintf (stderr, _("warning: "));
-
- SH_VA_START (args, format);
-
- vfprintf (stderr, format, args);
- va_end (args);
- fprintf (stderr, "\n");
-}
-
-/* Print a usage summary for the currently-executing builtin command. */
-void
-builtin_usage ()
-{
- if (this_command_name && *this_command_name)
- fprintf (stderr, _("%s: usage: "), this_command_name);
- fprintf (stderr, "%s\n", _(current_builtin->short_doc));
- fflush (stderr);
-}
-
-/* Return if LIST is NULL else barf and jump to top_level. Used by some
- builtins that do not accept arguments. */
-void
-no_args (list)
- WORD_LIST *list;
-{
- if (list)
- {
- builtin_error (_("too many arguments"));
- top_level_cleanup ();
- jump_to_top_level (DISCARD);
- }
-}
-
-/* Check that no options were given to the currently-executing builtin,
- and return 0 if there were options. */
-int
-no_options (list)
- WORD_LIST *list;
-{
- int opt;
-
- reset_internal_getopt ();
- if ((opt = internal_getopt (list, "")) != -1)
- {
- if (opt == GETOPT_HELP)
- {
- builtin_help ();
- return (2);
- }
- builtin_usage ();
- return (1);
- }
- return (0);
-}
-
-void
-sh_needarg (s)
- char *s;
-{
- builtin_error (_("%s: option requires an argument"), s);
-}
-
-void
-sh_neednumarg (s)
- char *s;
-{
- builtin_error (_("%s: numeric argument required"), s);
-}
-
-void
-sh_notfound (s)
- char *s;
-{
- builtin_error (_("%s: not found"), s);
-}
-
-/* Function called when one of the builtin commands detects an invalid
- option. */
-void
-sh_invalidopt (s)
- char *s;
-{
- builtin_error (_("%s: invalid option"), s);
-}
-
-void
-sh_invalidoptname (s)
- char *s;
-{
- builtin_error (_("%s: invalid option name"), s);
-}
-
-void
-sh_invalidid (s)
- char *s;
-{
- builtin_error (_("`%s': not a valid identifier"), s);
-}
-
-void
-sh_invalidnum (s)
- char *s;
-{
- char *msg;
-
- if (*s == '0' && isdigit (s[1]))
- msg = _("invalid octal number");
- else if (*s == '0' && s[1] == 'x')
- msg = _("invalid hex number");
- else
- msg = _("invalid number");
- builtin_error ("%s: %s", s, msg);
-}
-
-void
-sh_invalidsig (s)
- char *s;
-{
- builtin_error (_("%s: invalid signal specification"), s);
-}
-
-void
-sh_badpid (s)
- char *s;
-{
- builtin_error (_("`%s': not a pid or valid job spec"), s);
-}
-
-void
-sh_readonly (s)
- const char *s;
-{
- builtin_error (_("%s: readonly variable"), s);
-}
-
-void
-sh_erange (s, desc)
- char *s, *desc;
-{
- if (s)
- builtin_error (_("%s: %s out of range"), s, desc ? desc : _("argument"));
- else
- builtin_error (_("%s out of range"), desc ? desc : _("argument"));
-}
-
-#if defined (JOB_CONTROL)
-void
-sh_badjob (s)
- char *s;
-{
- builtin_error (_("%s: no such job"), s);
-}
-
-void
-sh_nojobs (s)
- char *s;
-{
- if (s)
- builtin_error (_("%s: no job control"), s);
- else
- builtin_error (_("no job control"));
-}
-#endif
-
-#if defined (RESTRICTED_SHELL)
-void
-sh_restricted (s)
- char *s;
-{
- if (s)
- builtin_error (_("%s: restricted"), s);
- else
- builtin_error (_("restricted"));
-}
-#endif
-
-void
-sh_notbuiltin (s)
- char *s;
-{
- builtin_error (_("%s: not a shell builtin"), s);
-}
-
-void
-sh_wrerror ()
-{
-#if defined (DONT_REPORT_BROKEN_PIPE_WRITE_ERRORS) && defined (EPIPE)
- if (errno != EPIPE)
-#endif /* DONT_REPORT_BROKEN_PIPE_WRITE_ERRORS && EPIPE */
- builtin_error (_("write error: %s"), strerror (errno));
-}
-
-void
-sh_ttyerror (set)
- int set;
-{
- if (set)
- builtin_error (_("error setting terminal attributes: %s"), strerror (errno));
- else
- builtin_error (_("error getting terminal attributes: %s"), strerror (errno));
-}
-
-int
-sh_chkwrite (s)
- int s;
-{
- fflush (stdout);
- if (ferror (stdout))
- {
- sh_wrerror ();
- fpurge (stdout);
- clearerr (stdout);
- return (EXECUTION_FAILURE);
- }
- return (s);
-}
-
-/* **************************************************************** */
-/* */
-/* Shell positional parameter manipulation */
-/* */
-/* **************************************************************** */
-
-/* Convert a WORD_LIST into a C-style argv. Return the number of elements
- in the list in *IP, if IP is non-null. A convenience function for
- loadable builtins; also used by `test'. */
-char **
-make_builtin_argv (list, ip)
- WORD_LIST *list;
- int *ip;
-{
- char **argv;
-
- argv = strvec_from_word_list (list, 0, 1, ip);
- argv[0] = this_command_name;
- return argv;
-}
-
-/* Remember LIST in $1 ... $9, and REST_OF_ARGS. If DESTRUCTIVE is
- non-zero, then discard whatever the existing arguments are, else
- only discard the ones that are to be replaced. */
-void
-remember_args (list, destructive)
- WORD_LIST *list;
- int destructive;
-{
- register int i;
-
- for (i = 1; i < 10; i++)
- {
- if ((destructive || list) && dollar_vars[i])
- {
- free (dollar_vars[i]);
- dollar_vars[i] = (char *)NULL;
- }
-
- if (list)
- {
- dollar_vars[i] = savestring (list->word->word);
- list = list->next;
- }
- }
-
- /* If arguments remain, assign them to REST_OF_ARGS.
- Note that copy_word_list (NULL) returns NULL, and
- that dispose_words (NULL) does nothing. */
- if (destructive || list)
- {
- dispose_words (rest_of_args);
- rest_of_args = copy_word_list (list);
- }
-
- if (destructive)
- set_dollar_vars_changed ();
-
- invalidate_cached_quoted_dollar_at ();
-}
-
-static int changed_dollar_vars;
-
-/* Have the dollar variables been reset to new values since we last
- checked? */
-int
-dollar_vars_changed ()
-{
- return (changed_dollar_vars);
-}
-
-void
-set_dollar_vars_unchanged ()
-{
- changed_dollar_vars = 0;
-}
-
-void
-set_dollar_vars_changed ()
-{
- if (variable_context)
- changed_dollar_vars |= ARGS_FUNC;
- else if (this_shell_builtin == set_builtin)
- changed_dollar_vars |= ARGS_SETBLTIN;
- else
- changed_dollar_vars |= ARGS_INVOC;
-}
-
-/* **************************************************************** */
-/* */
-/* Validating numeric input and arguments */
-/* */
-/* **************************************************************** */
-
-/* Read a numeric arg for this_command_name, the name of the shell builtin
- that wants it. LIST is the word list that the arg is to come from.
- Accept only the numeric argument; report an error if other arguments
- follow. If FATAL is 1, call throw_to_top_level, which exits the
- shell; if it's 2, call jump_to_top_level (DISCARD), which aborts the
- current command; if FATAL is 0, return an indication of an invalid
- number by setting *NUMOK == 0 and return -1. */
-int
-get_numeric_arg (list, fatal, count)
- WORD_LIST *list;
- int fatal;
- intmax_t *count;
-{
- char *arg;
-
- if (count)
- *count = 1;
-
- if (list && list->word && ISOPTION (list->word->word, '-'))
- list = list->next;
-
- if (list)
- {
- arg = list->word->word;
- if (arg == 0 || (legal_number (arg, count) == 0))
- {
- sh_neednumarg (list->word->word ? list->word->word : "`'");
- if (fatal == 0)
- return 0;
- else if (fatal == 1) /* fatal == 1; abort */
- throw_to_top_level ();
- else /* fatal == 2; discard current command */
- {
- top_level_cleanup ();
- jump_to_top_level (DISCARD);
- }
- }
- no_args (list->next);
- }
-
- return (1);
-}
-
-/* Get an eight-bit status value from LIST */
-int
-get_exitstat (list)
- WORD_LIST *list;
-{
- int status;
- intmax_t sval;
- char *arg;
-
- if (list && list->word && ISOPTION (list->word->word, '-'))
- list = list->next;
-
- if (list == 0)
- {
- /* If we're not running the DEBUG trap, the return builtin, when not
- given any arguments, uses the value of $? before the trap ran. If
- given an argument, return uses it. This means that the trap can't
- change $?. The DEBUG trap gets to change $?, though, since that is
- part of its reason for existing, and because the extended debug mode
- does things with the return value. */
- if (this_shell_builtin == return_builtin && running_trap > 0 && running_trap != DEBUG_TRAP+1)
- return (trap_saved_exit_value);
- return (last_command_exit_value);
- }
-
- arg = list->word->word;
- if (arg == 0 || legal_number (arg, &sval) == 0)
- {
- sh_neednumarg (list->word->word ? list->word->word : "`'");
- return EX_BADUSAGE;
- }
- no_args (list->next);
-
- status = sval & 255;
- return status;
-}
-
-/* Return the octal number parsed from STRING, or -1 to indicate
- that the string contained a bad number. */
-int
-read_octal (string)
- char *string;
-{
- int result, digits;
-
- result = digits = 0;
- while (*string && ISOCTAL (*string))
- {
- digits++;
- result = (result * 8) + (*string++ - '0');
- if (result > 0777)
- return -1;
- }
-
- if (digits == 0 || *string)
- result = -1;
-
- return (result);
-}
-
-/* **************************************************************** */
-/* */
-/* Manipulating the current working directory */
-/* */
-/* **************************************************************** */
-
-/* Return a consed string which is the current working directory.
- FOR_WHOM is the name of the caller for error printing. */
-char *the_current_working_directory = (char *)NULL;
-
-char *
-get_working_directory (for_whom)
- char *for_whom;
-{
- if (no_symbolic_links)
- {
- FREE (the_current_working_directory);
- the_current_working_directory = (char *)NULL;
- }
-
- if (the_current_working_directory == 0)
- {
-#if defined (GETCWD_BROKEN)
- the_current_working_directory = getcwd (0, PATH_MAX);
-#else
- the_current_working_directory = getcwd (0, 0);
-#endif
- if (the_current_working_directory == 0)
- {
- fprintf (stderr, _("%s: error retrieving current directory: %s: %s\n"),
- (for_whom && *for_whom) ? for_whom : get_name_for_error (),
- _(bash_getcwd_errstr), strerror (errno));
- return (char *)NULL;
- }
- }
-
- return (savestring (the_current_working_directory));
-}
-
-/* Make NAME our internal idea of the current working directory. */
-void
-set_working_directory (name)
- char *name;
-{
- FREE (the_current_working_directory);
- the_current_working_directory = savestring (name);
-}
-
-/* **************************************************************** */
-/* */
-/* Job control support functions */
-/* */
-/* **************************************************************** */
-
-#if defined (JOB_CONTROL)
-int
-get_job_by_name (name, flags)
- const char *name;
- int flags;
-{
- register int i, wl, cl, match, job;
- register PROCESS *p;
- register JOB *j;
-
- job = NO_JOB;
- wl = strlen (name);
- for (i = js.j_jobslots - 1; i >= 0; i--)
- {
- j = get_job_by_jid (i);
- if (j == 0 || ((flags & JM_STOPPED) && J_JOBSTATE(j) != JSTOPPED))
- continue;
-
- p = j->pipe;
- do
- {
- if (flags & JM_EXACT)
- {
- cl = strlen (p->command);
- match = STREQN (p->command, name, cl);
- }
- else if (flags & JM_SUBSTRING)
- match = strcasestr (p->command, name) != (char *)0;
- else
- match = STREQN (p->command, name, wl);
-
- if (match == 0)
- {
- p = p->next;
- continue;
- }
- else if (flags & JM_FIRSTMATCH)
- return i; /* return first match */
- else if (job != NO_JOB)
- {
- if (this_shell_builtin)
- builtin_error (_("%s: ambiguous job spec"), name);
- else
- internal_error (_("%s: ambiguous job spec"), name);
- return (DUP_JOB);
- }
- else
- job = i;
- }
- while (p != j->pipe);
- }
-
- return (job);
-}
-
-/* Return the job spec found in LIST. */
-int
-get_job_spec (list)
- WORD_LIST *list;
-{
- register char *word;
- int job, jflags;
-
- if (list == 0)
- return (js.j_current);
-
- word = list->word->word;
-
- if (*word == '\0')
- return (NO_JOB);
-
- if (*word == '%')
- word++;
-
- if (DIGIT (*word) && all_digits (word))
- {
- job = atoi (word);
- return (job > js.j_jobslots ? NO_JOB : job - 1);
- }
-
- jflags = 0;
- switch (*word)
- {
- case 0:
- case '%':
- case '+':
- return (js.j_current);
-
- case '-':
- return (js.j_previous);
-
- case '?': /* Substring search requested. */
- jflags |= JM_SUBSTRING;
- word++;
- /* FALLTHROUGH */
-
- default:
- return get_job_by_name (word, jflags);
- }
-}
-#endif /* JOB_CONTROL */
-
-/*
- * NOTE: `kill' calls this function with forcecols == 0
- */
-int
-display_signal_list (list, forcecols)
- WORD_LIST *list;
- int forcecols;
-{
- register int i, column;
- char *name;
- int result, signum, dflags;
- intmax_t lsignum;
-
- result = EXECUTION_SUCCESS;
- if (!list)
- {
- for (i = 1, column = 0; i < NSIG; i++)
- {
- name = signal_name (i);
- if (STREQN (name, "SIGJUNK", 7) || STREQN (name, "Unknown", 7))
- continue;
-
- if (posixly_correct && !forcecols)
- {
- /* This is for the kill builtin. POSIX.2 says the signal names
- are displayed without the `SIG' prefix. */
- if (STREQN (name, "SIG", 3))
- name += 3;
- printf ("%s%s", name, (i == NSIG - 1) ? "" : " ");
- }
- else
- {
- printf ("%2d) %s", i, name);
-
- if (++column < 5)
- printf ("\t");
- else
- {
- printf ("\n");
- column = 0;
- }
- }
- }
-
- if ((posixly_correct && !forcecols) || column != 0)
- printf ("\n");
- return result;
- }
-
- /* List individual signal names or numbers. */
- while (list)
- {
- if (legal_number (list->word->word, &lsignum))
- {
- /* This is specified by Posix.2 so that exit statuses can be
- mapped into signal numbers. */
- if (lsignum > 128)
- lsignum -= 128;
- if (lsignum < 0 || lsignum >= NSIG)
- {
- sh_invalidsig (list->word->word);
- result = EXECUTION_FAILURE;
- list = list->next;
- continue;
- }
-
- signum = lsignum;
- name = signal_name (signum);
- if (STREQN (name, "SIGJUNK", 7) || STREQN (name, "Unknown", 7))
- {
- list = list->next;
- continue;
- }
-#if defined (JOB_CONTROL)
- /* POSIX.2 says that `kill -l signum' prints the signal name without
- the `SIG' prefix. */
- printf ("%s\n", (this_shell_builtin == kill_builtin) ? name + 3 : name);
-#else
- printf ("%s\n", name);
-#endif
- }
- else
- {
- dflags = DSIG_NOCASE;
- if (posixly_correct == 0 || this_shell_builtin != kill_builtin)
- dflags |= DSIG_SIGPREFIX;
- signum = decode_signal (list->word->word, dflags);
- if (signum == NO_SIG)
- {
- sh_invalidsig (list->word->word);
- result = EXECUTION_FAILURE;
- list = list->next;
- continue;
- }
- printf ("%d\n", signum);
- }
- list = list->next;
- }
- return (result);
-}
-
-/* **************************************************************** */
-/* */
-/* Finding builtin commands and their functions */
-/* */
-/* **************************************************************** */
-
-/* Perform a binary search and return the address of the builtin function
- whose name is NAME. If the function couldn't be found, or the builtin
- is disabled or has no function associated with it, return NULL.
- Return the address of the builtin.
- DISABLED_OKAY means find it even if the builtin is disabled. */
-struct builtin *
-builtin_address_internal (name, disabled_okay)
- char *name;
- int disabled_okay;
-{
- int hi, lo, mid, j;
-
- hi = num_shell_builtins - 1;
- lo = 0;
-
- while (lo <= hi)
- {
- mid = (lo + hi) / 2;
-
- j = shell_builtins[mid].name[0] - name[0];
-
- if (j == 0)
- j = strcmp (shell_builtins[mid].name, name);
-
- if (j == 0)
- {
- /* It must have a function pointer. It must be enabled, or we
- must have explicitly allowed disabled functions to be found,
- and it must not have been deleted. */
- if (shell_builtins[mid].function &&
- ((shell_builtins[mid].flags & BUILTIN_DELETED) == 0) &&
- ((shell_builtins[mid].flags & BUILTIN_ENABLED) || disabled_okay))
- return (&shell_builtins[mid]);
- else
- return ((struct builtin *)NULL);
- }
- if (j > 0)
- hi = mid - 1;
- else
- lo = mid + 1;
- }
- return ((struct builtin *)NULL);
-}
-
-/* Return the pointer to the function implementing builtin command NAME. */
-sh_builtin_func_t *
-find_shell_builtin (name)
- char *name;
-{
- current_builtin = builtin_address_internal (name, 0);
- return (current_builtin ? current_builtin->function : (sh_builtin_func_t *)NULL);
-}
-
-/* Return the address of builtin with NAME, whether it is enabled or not. */
-sh_builtin_func_t *
-builtin_address (name)
- char *name;
-{
- current_builtin = builtin_address_internal (name, 1);
- return (current_builtin ? current_builtin->function : (sh_builtin_func_t *)NULL);
-}
-
-/* Return the function implementing the builtin NAME, but only if it is a
- POSIX.2 special builtin. */
-sh_builtin_func_t *
-find_special_builtin (name)
- char *name;
-{
- current_builtin = builtin_address_internal (name, 0);
- return ((current_builtin && (current_builtin->flags & SPECIAL_BUILTIN)) ?
- current_builtin->function :
- (sh_builtin_func_t *)NULL);
-}
-
-static int
-shell_builtin_compare (sbp1, sbp2)
- struct builtin *sbp1, *sbp2;
-{
- int result;
-
- if ((result = sbp1->name[0] - sbp2->name[0]) == 0)
- result = strcmp (sbp1->name, sbp2->name);
-
- return (result);
-}
-
-/* Sort the table of shell builtins so that the binary search will work
- in find_shell_builtin. */
-void
-initialize_shell_builtins ()
-{
- qsort (shell_builtins, num_shell_builtins, sizeof (struct builtin),
- (QSFUNC *)shell_builtin_compare);
-}
-
-#if !defined (HELP_BUILTIN)
-void
-builtin_help ()
-{
- printf ("%s: %s\n", this_command_name, _("help not available in this version"));
-}
-#endif
+++ /dev/null
-This file is complete.def, from which is created complete.c.
-It implements the builtins "complete", "compgen", and "compopt" in Bash.
-
-Copyright (C) 1999-2014 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 <http://www.gnu.org/licenses/>.
-
-$PRODUCES complete.c
-
-$BUILTIN complete
-$DEPENDS_ON PROGRAMMABLE_COMPLETION
-$FUNCTION complete_builtin
-$SHORT_DOC complete [-abcdefgjksuv] [-pr] [-DE] [-o option] [-A action] [-G globpat] [-W wordlist] [-F function] [-C command] [-X filterpat] [-P prefix] [-S suffix] [name ...]
-Specify how arguments are to be completed by Readline.
-
-For each NAME, specify how arguments are to be completed. If no options
-are supplied, existing completion specifications are printed in a way that
-allows them to be reused as input.
-
-Options:
- -p print existing completion specifications in a reusable format
- -r remove a completion specification for each NAME, or, if no
- NAMEs are supplied, all completion specifications
- -D apply the completions and actions as the default for commands
- without any specific completion defined
- -E apply the completions and actions to "empty" commands --
- completion attempted on a blank line
-
-When completion is attempted, the actions are applied in the order the
-uppercase-letter options are listed above. The -D option takes
-precedence over -E.
-
-Exit Status:
-Returns success unless an invalid option is supplied or an error occurs.
-$END
-
-#include <config.h>
-
-#include <stdio.h>
-
-#include "../bashtypes.h"
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
-
-#include "../bashansi.h"
-#include "../bashintl.h"
-
-#include "../shell.h"
-#include "../builtins.h"
-#include "../pcomplete.h"
-#include "../bashline.h"
-
-#include "common.h"
-#include "bashgetopt.h"
-
-#include <readline/readline.h>
-
-#define STRDUP(x) ((x) ? savestring (x) : (char *)NULL)
-
-/* Structure containing all the non-action (binary) options; filled in by
- build_actions(). */
-struct _optflags {
- int pflag;
- int rflag;
- int Dflag;
- int Eflag;
-};
-
-static int find_compact __P((char *));
-static int find_compopt __P((char *));
-
-static int build_actions __P((WORD_LIST *, struct _optflags *, unsigned long *, unsigned long *));
-
-static int remove_cmd_completions __P((WORD_LIST *));
-
-static int print_one_completion __P((char *, COMPSPEC *));
-static int print_compitem __P((BUCKET_CONTENTS *));
-static void print_compopts __P((const char *, COMPSPEC *, int));
-static void print_all_completions __P((void));
-static int print_cmd_completions __P((WORD_LIST *));
-
-static char *Garg, *Warg, *Parg, *Sarg, *Xarg, *Farg, *Carg;
-
-static const struct _compacts {
- const char * const actname;
- int actflag;
- int actopt;
-} compacts[] = {
- { "alias", CA_ALIAS, 'a' },
- { "arrayvar", CA_ARRAYVAR, 0 },
- { "binding", CA_BINDING, 0 },
- { "builtin", CA_BUILTIN, 'b' },
- { "command", CA_COMMAND, 'c' },
- { "directory", CA_DIRECTORY, 'd' },
- { "disabled", CA_DISABLED, 0 },
- { "enabled", CA_ENABLED, 0 },
- { "export", CA_EXPORT, 'e' },
- { "file", CA_FILE, 'f' },
- { "function", CA_FUNCTION, 0 },
- { "helptopic", CA_HELPTOPIC, 0 },
- { "hostname", CA_HOSTNAME, 0 },
- { "group", CA_GROUP, 'g' },
- { "job", CA_JOB, 'j' },
- { "keyword", CA_KEYWORD, 'k' },
- { "running", CA_RUNNING, 0 },
- { "service", CA_SERVICE, 's' },
- { "setopt", CA_SETOPT, 0 },
- { "shopt", CA_SHOPT, 0 },
- { "signal", CA_SIGNAL, 0 },
- { "stopped", CA_STOPPED, 0 },
- { "user", CA_USER, 'u' },
- { "variable", CA_VARIABLE, 'v' },
- { (char *)NULL, 0, 0 },
-};
-
-/* This should be a STRING_INT_ALIST */
-static const struct _compopt {
- const char * const optname;
- int optflag;
-} compopts[] = {
- { "bashdefault", COPT_BASHDEFAULT },
- { "default", COPT_DEFAULT },
- { "dirnames", COPT_DIRNAMES },
- { "filenames",COPT_FILENAMES},
- { "noquote", COPT_NOQUOTE },
- { "nospace", COPT_NOSPACE },
- { "plusdirs", COPT_PLUSDIRS },
- { (char *)NULL, 0 },
-};
-
-static int
-find_compact (name)
- char *name;
-{
- register int i;
-
- for (i = 0; compacts[i].actname; i++)
- if (STREQ (name, compacts[i].actname))
- return i;
- return -1;
-}
-
-static int
-find_compopt (name)
- char *name;
-{
- register int i;
-
- for (i = 0; compopts[i].optname; i++)
- if (STREQ (name, compopts[i].optname))
- return i;
- return -1;
-}
-
-/* Build the actions and compspec options from the options specified in LIST.
- ACTP is a pointer to an unsigned long in which to place the bitmap of
- actions. OPTP is a pointer to an unsigned long in which to place the
- btmap of compspec options (arguments to `-o'). PP, if non-null, gets 1
- if -p is supplied; RP, if non-null, gets 1 if -r is supplied.
- If either is null, the corresponding option generates an error.
- This also sets variables corresponding to options that take arguments as
- a side effect; the caller should ensure that those variables are set to
- NULL before calling build_actions. Return value:
- EX_USAGE = bad option
- EXECUTION_SUCCESS = some options supplied
- EXECUTION_FAILURE = no options supplied
-*/
-
-static int
-build_actions (list, flagp, actp, optp)
- WORD_LIST *list;
- struct _optflags *flagp;
- unsigned long *actp, *optp;
-{
- int opt, ind, opt_given;
- unsigned long acts, copts;
-
- acts = copts = (unsigned long)0L;
- opt_given = 0;
-
- reset_internal_getopt ();
- while ((opt = internal_getopt (list, "abcdefgjko:prsuvA:G:W:P:S:X:F:C:DE")) != -1)
- {
- opt_given = 1;
- switch (opt)
- {
- case 'r':
- if (flagp)
- {
- flagp->rflag = 1;
- break;
- }
- else
- {
- sh_invalidopt ("-r");
- builtin_usage ();
- return (EX_USAGE);
- }
-
- case 'p':
- if (flagp)
- {
- flagp->pflag = 1;
- break;
- }
- else
- {
- sh_invalidopt ("-p");
- builtin_usage ();
- return (EX_USAGE);
- }
-
- case 'a':
- acts |= CA_ALIAS;
- break;
- case 'b':
- acts |= CA_BUILTIN;
- break;
- case 'c':
- acts |= CA_COMMAND;
- break;
- case 'd':
- acts |= CA_DIRECTORY;
- break;
- case 'e':
- acts |= CA_EXPORT;
- break;
- case 'f':
- acts |= CA_FILE;
- break;
- case 'g':
- acts |= CA_GROUP;
- break;
- case 'j':
- acts |= CA_JOB;
- break;
- case 'k':
- acts |= CA_KEYWORD;
- break;
- case 's':
- acts |= CA_SERVICE;
- break;
- case 'u':
- acts |= CA_USER;
- break;
- case 'v':
- acts |= CA_VARIABLE;
- break;
- case 'o':
- ind = find_compopt (list_optarg);
- if (ind < 0)
- {
- sh_invalidoptname (list_optarg);
- return (EX_USAGE);
- }
- copts |= compopts[ind].optflag;
- break;
- case 'A':
- ind = find_compact (list_optarg);
- if (ind < 0)
- {
- builtin_error (_("%s: invalid action name"), list_optarg);
- return (EX_USAGE);
- }
- acts |= compacts[ind].actflag;
- break;
- case 'C':
- Carg = list_optarg;
- break;
- case 'D':
- if (flagp)
- {
- flagp->Dflag = 1;
- break;
- }
- else
- {
- sh_invalidopt ("-D");
- builtin_usage ();
- return (EX_USAGE);
- }
- case 'E':
- if (flagp)
- {
- flagp->Eflag = 1;
- break;
- }
- else
- {
- sh_invalidopt ("-E");
- builtin_usage ();
- return (EX_USAGE);
- }
- case 'F':
- Farg = list_optarg;
- break;
- case 'G':
- Garg = list_optarg;
- break;
- case 'P':
- Parg = list_optarg;
- break;
- case 'S':
- Sarg = list_optarg;
- break;
- case 'W':
- Warg = list_optarg;
- break;
- case 'X':
- Xarg = list_optarg;
- break;
- default:
- builtin_usage ();
- return (EX_USAGE);
- }
- }
-
- *actp = acts;
- *optp = copts;
-
- return (opt_given ? EXECUTION_SUCCESS : EXECUTION_FAILURE);
-}
-
-/* Add, remove, and display completion specifiers. */
-int
-complete_builtin (list)
- WORD_LIST *list;
-{
- int opt_given, rval;
- unsigned long acts, copts;
- COMPSPEC *cs;
- struct _optflags oflags;
- WORD_LIST *l, *wl;
-
- if (list == 0)
- {
- print_all_completions ();
- return (EXECUTION_SUCCESS);
- }
-
- opt_given = oflags.pflag = oflags.rflag = oflags.Dflag = oflags.Eflag = 0;
-
- acts = copts = (unsigned long)0L;
- Garg = Warg = Parg = Sarg = Xarg = Farg = Carg = (char *)NULL;
- cs = (COMPSPEC *)NULL;
-
- /* Build the actions from the arguments. Also sets the [A-Z]arg variables
- as a side effect if they are supplied as options. */
- rval = build_actions (list, &oflags, &acts, &copts);
- if (rval == EX_USAGE)
- return (rval);
- opt_given = rval != EXECUTION_FAILURE;
-
- list = loptend;
-
- wl = oflags.Dflag ? make_word_list (make_bare_word (DEFAULTCMD), (WORD_LIST *)NULL)
- : (oflags.Eflag ? make_word_list (make_bare_word (EMPTYCMD), (WORD_LIST *)NULL) : 0);
-
- /* -p overrides everything else */
- if (oflags.pflag || (list == 0 && opt_given == 0))
- {
- if (wl)
- {
- rval = print_cmd_completions (wl);
- dispose_words (wl);
- return rval;
- }
- else if (list == 0)
- {
- print_all_completions ();
- return (EXECUTION_SUCCESS);
- }
- return (print_cmd_completions (list));
- }
-
- /* next, -r overrides everything else. */
- if (oflags.rflag)
- {
- if (wl)
- {
- rval = remove_cmd_completions (wl);
- dispose_words (wl);
- return rval;
- }
- else if (list == 0)
- {
- progcomp_flush ();
- return (EXECUTION_SUCCESS);
- }
- return (remove_cmd_completions (list));
- }
-
- if (wl == 0 && list == 0 && opt_given)
- {
- builtin_usage ();
- return (EX_USAGE);
- }
-
- /* If we get here, we need to build a compspec and add it for each
- remaining argument. */
- cs = compspec_create ();
- cs->actions = acts;
- cs->options = copts;
-
- cs->globpat = STRDUP (Garg);
- cs->words = STRDUP (Warg);
- cs->prefix = STRDUP (Parg);
- cs->suffix = STRDUP (Sarg);
- cs->funcname = STRDUP (Farg);
- cs->command = STRDUP (Carg);
- cs->filterpat = STRDUP (Xarg);
-
- for (rval = EXECUTION_SUCCESS, l = wl ? wl : list ; l; l = l->next)
- {
- /* Add CS as the compspec for the specified commands. */
- if (progcomp_insert (l->word->word, cs) == 0)
- rval = EXECUTION_FAILURE;
- }
-
- dispose_words (wl);
- return (rval);
-}
-
-static int
-remove_cmd_completions (list)
- WORD_LIST *list;
-{
- WORD_LIST *l;
- int ret;
-
- for (ret = EXECUTION_SUCCESS, l = list; l; l = l->next)
- {
- if (progcomp_remove (l->word->word) == 0)
- {
- builtin_error (_("%s: no completion specification"), l->word->word);
- ret = EXECUTION_FAILURE;
- }
- }
- return ret;
-}
-
-#define SQPRINTARG(a, f) \
- do { \
- if (a) \
- { \
- x = sh_single_quote (a); \
- printf ("%s %s ", f, x); \
- free (x); \
- } \
- } while (0)
-
-#define PRINTARG(a, f) \
- do { \
- if (a) \
- printf ("%s %s ", f, a); \
- } while (0)
-
-#define PRINTOPT(a, f) \
- do { \
- if (acts & a) \
- printf ("%s ", f); \
- } while (0)
-
-#define PRINTACT(a, f) \
- do { \
- if (acts & a) \
- printf ("-A %s ", f); \
- } while (0)
-
-#define PRINTCOMPOPT(a, f) \
- do { \
- if (copts & a) \
- printf ("-o %s ", f); \
- } while (0)
-
-#define XPRINTCOMPOPT(a, f) \
- do { \
- if (copts & a) \
- printf ("-o %s ", f); \
- else \
- printf ("+o %s ", f); \
- } while (0)
-
-static int
-print_one_completion (cmd, cs)
- char *cmd;
- COMPSPEC *cs;
-{
- unsigned long acts, copts;
- char *x;
-
- printf ("complete ");
-
- copts = cs->options;
-
- /* First, print the -o options. */
- PRINTCOMPOPT (COPT_BASHDEFAULT, "bashdefault");
- PRINTCOMPOPT (COPT_DEFAULT, "default");
- PRINTCOMPOPT (COPT_DIRNAMES, "dirnames");
- PRINTCOMPOPT (COPT_FILENAMES, "filenames");
- PRINTCOMPOPT (COPT_NOSPACE, "nospace");
- PRINTCOMPOPT (COPT_PLUSDIRS, "plusdirs");
-
- acts = cs->actions;
-
- /* simple flags next */
- PRINTOPT (CA_ALIAS, "-a");
- PRINTOPT (CA_BUILTIN, "-b");
- PRINTOPT (CA_COMMAND, "-c");
- PRINTOPT (CA_DIRECTORY, "-d");
- PRINTOPT (CA_EXPORT, "-e");
- PRINTOPT (CA_FILE, "-f");
- PRINTOPT (CA_GROUP, "-g");
- PRINTOPT (CA_JOB, "-j");
- PRINTOPT (CA_KEYWORD, "-k");
- PRINTOPT (CA_SERVICE, "-s");
- PRINTOPT (CA_USER, "-u");
- PRINTOPT (CA_VARIABLE, "-v");
-
- /* now the rest of the actions */
- PRINTACT (CA_ARRAYVAR, "arrayvar");
- PRINTACT (CA_BINDING, "binding");
- PRINTACT (CA_DISABLED, "disabled");
- PRINTACT (CA_ENABLED, "enabled");
- PRINTACT (CA_FUNCTION, "function");
- PRINTACT (CA_HELPTOPIC, "helptopic");
- PRINTACT (CA_HOSTNAME, "hostname");
- PRINTACT (CA_RUNNING, "running");
- PRINTACT (CA_SETOPT, "setopt");
- PRINTACT (CA_SHOPT, "shopt");
- PRINTACT (CA_SIGNAL, "signal");
- PRINTACT (CA_STOPPED, "stopped");
-
- /* now the rest of the arguments */
-
- /* arguments that require quoting */
- SQPRINTARG (cs->globpat, "-G");
- SQPRINTARG (cs->words, "-W");
- SQPRINTARG (cs->prefix, "-P");
- SQPRINTARG (cs->suffix, "-S");
- SQPRINTARG (cs->filterpat, "-X");
-
- SQPRINTARG (cs->command, "-C");
-
- /* simple arguments that don't require quoting */
- PRINTARG (cs->funcname, "-F");
-
- if (STREQ (cmd, EMPTYCMD))
- printf ("-E\n");
- else if (STREQ (cmd, DEFAULTCMD))
- printf ("-D\n");
- else
- printf ("%s\n", cmd);
-
- return (0);
-}
-
-static void
-print_compopts (cmd, cs, full)
- const char *cmd;
- COMPSPEC *cs;
- int full;
-{
- int copts;
-
- printf ("compopt ");
- copts = cs->options;
-
- if (full)
- {
- XPRINTCOMPOPT (COPT_BASHDEFAULT, "bashdefault");
- XPRINTCOMPOPT (COPT_DEFAULT, "default");
- XPRINTCOMPOPT (COPT_DIRNAMES, "dirnames");
- XPRINTCOMPOPT (COPT_FILENAMES, "filenames");
- XPRINTCOMPOPT (COPT_NOSPACE, "nospace");
- XPRINTCOMPOPT (COPT_PLUSDIRS, "plusdirs");
- }
- else
- {
- PRINTCOMPOPT (COPT_BASHDEFAULT, "bashdefault");
- PRINTCOMPOPT (COPT_DEFAULT, "default");
- PRINTCOMPOPT (COPT_DIRNAMES, "dirnames");
- PRINTCOMPOPT (COPT_FILENAMES, "filenames");
- PRINTCOMPOPT (COPT_NOSPACE, "nospace");
- PRINTCOMPOPT (COPT_PLUSDIRS, "plusdirs");
- }
-
- if (STREQ (cmd, EMPTYCMD))
- printf ("-E\n");
- else if (STREQ (cmd, DEFAULTCMD))
- printf ("-D\n");
- else
- printf ("%s\n", cmd);
-}
-
-static int
-print_compitem (item)
- BUCKET_CONTENTS *item;
-{
- COMPSPEC *cs;
- char *cmd;
-
- cmd = item->key;
- cs = (COMPSPEC *)item->data;
-
- return (print_one_completion (cmd, cs));
-}
-
-static void
-print_all_completions ()
-{
- progcomp_walk (print_compitem);
-}
-
-static int
-print_cmd_completions (list)
- WORD_LIST *list;
-{
- WORD_LIST *l;
- COMPSPEC *cs;
- int ret;
-
- for (ret = EXECUTION_SUCCESS, l = list; l; l = l->next)
- {
- cs = progcomp_search (l->word->word);
- if (cs)
- print_one_completion (l->word->word, cs);
- else
- {
- builtin_error (_("%s: no completion specification"), l->word->word);
- ret = EXECUTION_FAILURE;
- }
- }
-
- return (sh_chkwrite (ret));
-}
-
-$BUILTIN compgen
-$DEPENDS_ON PROGRAMMABLE_COMPLETION
-$FUNCTION compgen_builtin
-$SHORT_DOC compgen [-abcdefgjksuv] [-o option] [-A action] [-G globpat] [-W wordlist] [-F function] [-C command] [-X filterpat] [-P prefix] [-S suffix] [word]
-Display possible completions depending on the options.
-
-Intended to be used from within a shell function generating possible
-completions. If the optional WORD argument is supplied, matches against
-WORD are generated.
-
-Exit Status:
-Returns success unless an invalid option is supplied or an error occurs.
-$END
-
-int
-compgen_builtin (list)
- WORD_LIST *list;
-{
- int rval;
- unsigned long acts, copts;
- COMPSPEC *cs;
- STRINGLIST *sl;
- char *word, **matches;
-
- if (list == 0)
- return (EXECUTION_SUCCESS);
-
- acts = copts = (unsigned long)0L;
- Garg = Warg = Parg = Sarg = Xarg = Farg = Carg = (char *)NULL;
- cs = (COMPSPEC *)NULL;
-
- /* Build the actions from the arguments. Also sets the [A-Z]arg variables
- as a side effect if they are supplied as options. */
- rval = build_actions (list, (struct _optflags *)NULL, &acts, &copts);
- if (rval == EX_USAGE)
- return (rval);
- if (rval == EXECUTION_FAILURE)
- return (EXECUTION_SUCCESS);
-
- list = loptend;
-
- word = (list && list->word) ? list->word->word : "";
-
- if (Farg)
- builtin_error (_("warning: -F option may not work as you expect"));
- if (Carg)
- builtin_error (_("warning: -C option may not work as you expect"));
-
- /* If we get here, we need to build a compspec and evaluate it. */
- cs = compspec_create ();
- cs->actions = acts;
- cs->options = copts;
- cs->refcount = 1;
-
- cs->globpat = STRDUP (Garg);
- cs->words = STRDUP (Warg);
- cs->prefix = STRDUP (Parg);
- cs->suffix = STRDUP (Sarg);
- cs->funcname = STRDUP (Farg);
- cs->command = STRDUP (Carg);
- cs->filterpat = STRDUP (Xarg);
-
- rval = EXECUTION_FAILURE;
- sl = gen_compspec_completions (cs, "compgen", word, 0, 0, 0);
-
- /* If the compspec wants the bash default completions, temporarily
- turn off programmable completion and call the bash completion code. */
- if ((sl == 0 || sl->list_len == 0) && (copts & COPT_BASHDEFAULT))
- {
- matches = bash_default_completion (word, 0, 0, 0, 0);
- sl = completions_to_stringlist (matches);
- strvec_dispose (matches);
- }
-
- /* This isn't perfect, but it's the best we can do, given what readline
- exports from its set of completion utility functions. */
- if ((sl == 0 || sl->list_len == 0) && (copts & COPT_DEFAULT))
- {
- matches = rl_completion_matches (word, rl_filename_completion_function);
- strlist_dispose (sl);
- sl = completions_to_stringlist (matches);
- strvec_dispose (matches);
- }
-
- if (sl)
- {
- if (sl->list && sl->list_len)
- {
- rval = EXECUTION_SUCCESS;
- strlist_print (sl, (char *)NULL);
- }
- strlist_dispose (sl);
- }
-
- compspec_dispose (cs);
- return (rval);
-}
-
-$BUILTIN compopt
-$DEPENDS_ON PROGRAMMABLE_COMPLETION
-$FUNCTION compopt_builtin
-$SHORT_DOC compopt [-o|+o option] [-DE] [name ...]
-Modify or display completion options.
-
-Modify the completion options for each NAME, or, if no NAMEs are supplied,
-the completion currently being executed. If no OPTIONs are given, print
-the completion options for each NAME or the current completion specification.
-
-Options:
- -o option Set completion option OPTION for each NAME
- -D Change options for the "default" command completion
- -E Change options for the "empty" command completion
-
-Using `+o' instead of `-o' turns off the specified option.
-
-Arguments:
-
-Each NAME refers to a command for which a completion specification must
-have previously been defined using the `complete' builtin. If no NAMEs
-are supplied, compopt must be called by a function currently generating
-completions, and the options for that currently-executing completion
-generator are modified.
-
-Exit Status:
-Returns success unless an invalid option is supplied or NAME does not
-have a completion specification defined.
-$END
-
-int
-compopt_builtin (list)
- WORD_LIST *list;
-{
- int opts_on, opts_off, *opts, opt, oind, ret, Dflag, Eflag;
- WORD_LIST *l, *wl;
- COMPSPEC *cs;
-
- opts_on = opts_off = Eflag = Dflag = 0;
- ret = EXECUTION_SUCCESS;
-
- reset_internal_getopt ();
- while ((opt = internal_getopt (list, "+o:DE")) != -1)
- {
- opts = (list_opttype == '-') ? &opts_on : &opts_off;
-
- switch (opt)
- {
- case 'o':
- oind = find_compopt (list_optarg);
- if (oind < 0)
- {
- sh_invalidoptname (list_optarg);
- return (EX_USAGE);
- }
- *opts |= compopts[oind].optflag;
- break;
- case 'D':
- Dflag = 1;
- break;
- case 'E':
- Eflag = 1;
- break;
- default:
- builtin_usage ();
- return (EX_USAGE);
- }
- }
- list = loptend;
-
- wl = Dflag ? make_word_list (make_bare_word (DEFAULTCMD), (WORD_LIST *)NULL)
- : (Eflag ? make_word_list (make_bare_word (EMPTYCMD), (WORD_LIST *)NULL) : 0);
-
- if (list == 0 && wl == 0)
- {
- if (RL_ISSTATE (RL_STATE_COMPLETING) == 0 || pcomp_curcs == 0)
- {
- builtin_error (_("not currently executing completion function"));
- return (EXECUTION_FAILURE);
- }
- cs = pcomp_curcs;
-
- if (opts_on == 0 && opts_off == 0)
- {
- print_compopts (pcomp_curcmd, cs, 1);
- return (sh_chkwrite (ret));
- }
-
- /* Set the compspec options */
- pcomp_set_compspec_options (cs, opts_on, 1);
- pcomp_set_compspec_options (cs, opts_off, 0);
-
- /* And change the readline variables the options control */
- pcomp_set_readline_variables (opts_on, 1);
- pcomp_set_readline_variables (opts_off, 0);
-
- return (ret);
- }
-
- for (l = wl ? wl : list; l; l = l->next)
- {
- cs = progcomp_search (l->word->word);
- if (cs == 0)
- {
- builtin_error (_("%s: no completion specification"), l->word->word);
- ret = EXECUTION_FAILURE;
- continue;
- }
- if (opts_on == 0 && opts_off == 0)
- {
- print_compopts (l->word->word, cs, 1);
- continue; /* XXX -- fill in later */
- }
-
- /* Set the compspec options */
- pcomp_set_compspec_options (cs, opts_on, 1);
- pcomp_set_compspec_options (cs, opts_off, 0);
- }
-
- if (wl)
- dispose_words (wl);
-
- return (ret);
-}
+++ /dev/null
-This file is umask.def, from which is created umask.c.
-It implements the builtin "umask" in Bash.
-
-Copyright (C) 1987-2009 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 <http://www.gnu.org/licenses/>.
-
-$PRODUCES umask.c
-
-$BUILTIN umask
-$FUNCTION umask_builtin
-$SHORT_DOC umask [-p] [-S] [mode]
-Display or set file mode mask.
-
-Sets the user file-creation mask to MODE. If MODE is omitted, prints
-the current value of the mask.
-
-If MODE begins with a digit, it is interpreted as an octal number;
-otherwise it is a symbolic mode string like that accepted by chmod(1).
-
-Options:
- -p if MODE is omitted, output in a form that may be reused as input
- -S makes the output symbolic; otherwise an octal number is output
-
-Exit Status:
-Returns success unless MODE is invalid or an invalid option is given.
-$END
-
-#include <config.h>
-
-#include "../bashtypes.h"
-#include "filecntl.h"
-#if ! defined(_MINIX) && defined (HAVE_SYS_FILE_H)
-# include <sys/file.h>
-#endif
-
-#if defined (HAVE_UNISTD_H)
-#include <unistd.h>
-#endif
-
-#include <stdio.h>
-#include <chartypes.h>
-
-#include "../bashintl.h"
-
-#include "../shell.h"
-#include "posixstat.h"
-#include "common.h"
-#include "bashgetopt.h"
-
-/* **************************************************************** */
-/* */
-/* UMASK Builtin and Helpers */
-/* */
-/* **************************************************************** */
-
-static void print_symbolic_umask __P((mode_t));
-static int symbolic_umask __P((WORD_LIST *));
-
-/* Set or display the mask used by the system when creating files. Flag
- of -S means display the umask in a symbolic mode. */
-int
-umask_builtin (list)
- WORD_LIST *list;
-{
- int print_symbolically, opt, umask_value, pflag;
- mode_t umask_arg;
-
- print_symbolically = pflag = 0;
- reset_internal_getopt ();
- while ((opt = internal_getopt (list, "Sp")) != -1)
- {
- switch (opt)
- {
- case 'S':
- print_symbolically++;
- break;
- case 'p':
- pflag++;
- break;
- default:
- builtin_usage ();
- return (EX_USAGE);
- }
- }
-
- list = loptend;
-
- if (list)
- {
- if (DIGIT (*list->word->word))
- {
- umask_value = read_octal (list->word->word);
-
- /* Note that other shells just let you set the umask to zero
- by specifying a number out of range. This is a problem
- with those shells. We don't change the umask if the input
- is lousy. */
- if (umask_value == -1)
- {
- sh_erange (list->word->word, _("octal number"));
- return (EXECUTION_FAILURE);
- }
- }
- else
- {
- umask_value = symbolic_umask (list);
- if (umask_value == -1)
- return (EXECUTION_FAILURE);
- }
- umask_arg = (mode_t)umask_value;
- umask (umask_arg);
- if (print_symbolically)
- print_symbolic_umask (umask_arg);
- }
- else /* Display the UMASK for this user. */
- {
- umask_arg = umask (022);
- umask (umask_arg);
-
- if (pflag)
- printf ("umask%s ", (print_symbolically ? " -S" : ""));
- if (print_symbolically)
- print_symbolic_umask (umask_arg);
- else
- printf ("%04lo\n", (unsigned long)umask_arg);
- }
-
- return (sh_chkwrite (EXECUTION_SUCCESS));
-}
-
-/* Print the umask in a symbolic form. In the output, a letter is
- printed if the corresponding bit is clear in the umask. */
-static void
-print_symbolic_umask (um)
- mode_t um;
-{
- char ubits[4], gbits[4], obits[4]; /* u=rwx,g=rwx,o=rwx */
- int i;
-
- i = 0;
- if ((um & S_IRUSR) == 0)
- ubits[i++] = 'r';
- if ((um & S_IWUSR) == 0)
- ubits[i++] = 'w';
- if ((um & S_IXUSR) == 0)
- ubits[i++] = 'x';
- ubits[i] = '\0';
-
- i = 0;
- if ((um & S_IRGRP) == 0)
- gbits[i++] = 'r';
- if ((um & S_IWGRP) == 0)
- gbits[i++] = 'w';
- if ((um & S_IXGRP) == 0)
- gbits[i++] = 'x';
- gbits[i] = '\0';
-
- i = 0;
- if ((um & S_IROTH) == 0)
- obits[i++] = 'r';
- if ((um & S_IWOTH) == 0)
- obits[i++] = 'w';
- if ((um & S_IXOTH) == 0)
- obits[i++] = 'x';
- obits[i] = '\0';
-
- printf ("u=%s,g=%s,o=%s\n", ubits, gbits, obits);
-}
-
-int
-parse_symbolic_mode (mode, initial_bits)
- char *mode;
- int initial_bits;
-{
- int who, op, perm, bits, c;
- char *s;
-
- for (s = mode, bits = initial_bits;;)
- {
- who = op = perm = 0;
-
- /* Parse the `who' portion of the symbolic mode clause. */
- while (member (*s, "agou"))
- {
- switch (c = *s++)
- {
- case 'u':
- who |= S_IRWXU;
- continue;
- case 'g':
- who |= S_IRWXG;
- continue;
- case 'o':
- who |= S_IRWXO;
- continue;
- case 'a':
- who |= S_IRWXU | S_IRWXG | S_IRWXO;
- continue;
- default:
- break;
- }
- }
-
- /* The operation is now sitting in *s. */
- op = *s++;
- switch (op)
- {
- case '+':
- case '-':
- case '=':
- break;
- default:
- builtin_error (_("`%c': invalid symbolic mode operator"), op);
- return (-1);
- }
-
- /* Parse out the `perm' section of the symbolic mode clause. */
- while (member (*s, "rwx"))
- {
- c = *s++;
-
- switch (c)
- {
- case 'r':
- perm |= S_IRUGO;
- break;
- case 'w':
- perm |= S_IWUGO;
- break;
- case 'x':
- perm |= S_IXUGO;
- break;
- }
- }
-
- /* Now perform the operation or return an error for a
- bad permission string. */
- if (!*s || *s == ',')
- {
- if (who)
- perm &= who;
-
- switch (op)
- {
- case '+':
- bits |= perm;
- break;
- case '-':
- bits &= ~perm;
- break;
- case '=':
- if (who == 0)
- who = S_IRWXU | S_IRWXG | S_IRWXO;
- bits &= ~who;
- bits |= perm;
- break;
-
- /* No other values are possible. */
- }
-
- if (*s == '\0')
- break;
- else
- s++; /* skip past ',' */
- }
- else
- {
- builtin_error (_("`%c': invalid symbolic mode character"), *s);
- return (-1);
- }
- }
-
- return (bits);
-}
-
-/* Set the umask from a symbolic mode string similar to that accepted
- by chmod. If the -S argument is given, then print the umask in a
- symbolic form. */
-static int
-symbolic_umask (list)
- WORD_LIST *list;
-{
- int um, bits;
-
- /* Get the initial umask. Don't change it yet. */
- um = umask (022);
- umask (um);
-
- /* All work is done with the complement of the umask -- it's
- more intuitive and easier to deal with. It is complemented
- again before being returned. */
- bits = parse_symbolic_mode (list->word->word, ~um & 0777);
- if (bits == -1)
- return (-1);
-
- um = ~bits & 0777;
- return (um);
-}
+++ /dev/null
-This file is wait.def, from which is created wait.c.
-It implements the builtin "wait" in Bash.
-
-Copyright (C) 1987-2013 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 <http://www.gnu.org/licenses/>.
-
-$BUILTIN wait
-$FUNCTION wait_builtin
-$DEPENDS_ON JOB_CONTROL
-$PRODUCES wait.c
-$SHORT_DOC wait [-n] [id ...]
-Wait for job completion and return exit status.
-
-Waits for each process identified by an ID, which may be a process ID or a
-job specification, and reports its termination status. If ID is not
-given, waits for all currently active child processes, and the return
-status is zero. If ID is a a job specification, waits for all processes
-in that job's pipeline.
-
-If the -n option is supplied, waits for the next job to terminate and
-returns its exit status.
-
-Exit Status:
-Returns the status of the last ID; fails if ID is invalid or an invalid
-option is given.
-$END
-
-$BUILTIN wait
-$FUNCTION wait_builtin
-$DEPENDS_ON !JOB_CONTROL
-$SHORT_DOC wait [pid ...]
-Wait for process completion and return exit status.
-
-Waits for each process specified by a PID and reports its termination status.
-If PID is not given, waits for all currently active child processes,
-and the return status is zero. PID must be a process ID.
-
-Exit Status:
-Returns the status of the last PID; fails if PID is invalid or an invalid
-option is given.
-$END
-
-#include <config.h>
-
-#include "../bashtypes.h"
-#include <signal.h>
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
-
-#include <chartypes.h>
-
-#include "../bashansi.h"
-
-#include "../shell.h"
-#include "../jobs.h"
-#include "common.h"
-#include "bashgetopt.h"
-
-extern int wait_signal_received;
-extern int last_command_exit_signal;
-
-procenv_t wait_intr_buf;
-
-/* Wait for the pid in LIST to stop or die. If no arguments are given, then
- wait for all of the active background processes of the shell and return
- 0. If a list of pids or job specs are given, return the exit status of
- the last one waited for. */
-
-#define WAIT_RETURN(s) \
- do \
- { \
- interrupt_immediately = old_interrupt_immediately;\
- wait_signal_received = 0; \
- return (s);\
- } \
- while (0)
-
-int
-wait_builtin (list)
- WORD_LIST *list;
-{
- int status, code, opt, nflag;
- volatile int old_interrupt_immediately;
-
- USE_VAR(list);
-
- nflag = 0;
- reset_internal_getopt ();
- while ((opt = internal_getopt (list, "n")) != -1)
- {
- switch (opt)
- {
-#if defined (JOB_CONTROL)
- case 'n':
- nflag = 1;
- break;
-#endif
- default:
- builtin_usage ();
- return (EX_USAGE);
- }
- }
- list = loptend;
-
- old_interrupt_immediately = interrupt_immediately;
-#if 0
- interrupt_immediately++;
-#endif
-
- /* POSIX.2 says: When the shell is waiting (by means of the wait utility)
- for asynchronous commands to complete, the reception of a signal for
- which a trap has been set shall cause the wait utility to return
- immediately with an exit status greater than 128, after which the trap
- associated with the signal shall be taken.
-
- We handle SIGINT here; it's the only one that needs to be treated
- specially (I think), since it's handled specially in {no,}jobs.c. */
- code = setjmp_sigs (wait_intr_buf);
- if (code)
- {
- last_command_exit_signal = wait_signal_received;
- status = 128 + wait_signal_received;
- WAIT_RETURN (status);
- }
-
- /* We support jobs or pids.
- wait <pid-or-job> [pid-or-job ...] */
-
-#if defined (JOB_CONTROL)
- if (nflag)
- {
- status = wait_for_any_job ();
- if (status < 0)
- status = 127;
- WAIT_RETURN (status);
- }
-#endif
-
- /* But wait without any arguments means to wait for all of the shell's
- currently active background processes. */
- if (list == 0)
- {
- wait_for_background_pids ();
- WAIT_RETURN (EXECUTION_SUCCESS);
- }
-
- status = EXECUTION_SUCCESS;
- while (list)
- {
- pid_t pid;
- char *w;
- intmax_t pid_value;
-
- w = list->word->word;
- if (DIGIT (*w))
- {
- if (legal_number (w, &pid_value) && pid_value == (pid_t)pid_value)
- {
- pid = (pid_t)pid_value;
- status = wait_for_single_pid (pid);
- }
- else
- {
- sh_badpid (w);
- WAIT_RETURN (EXECUTION_FAILURE);
- }
- }
-#if defined (JOB_CONTROL)
- else if (*w && *w == '%')
- /* Must be a job spec. Check it out. */
- {
- int job;
- sigset_t set, oset;
-
- BLOCK_CHILD (set, oset);
- job = get_job_spec (list);
-
- if (INVALID_JOB (job))
- {
- if (job != DUP_JOB)
- sh_badjob (list->word->word);
- UNBLOCK_CHILD (oset);
- status = 127; /* As per Posix.2, section 4.70.2 */
- list = list->next;
- continue;
- }
-
- /* Job spec used. Wait for the last pid in the pipeline. */
- UNBLOCK_CHILD (oset);
- status = wait_for_job (job);
- }
-#endif /* JOB_CONTROL */
- else
- {
- sh_badpid (w);
- status = EXECUTION_FAILURE;
- }
- list = list->next;
- }
-
- WAIT_RETURN (status);
-}
+++ /dev/null
-# 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
+++ /dev/null
-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 <snowball3@bigfoot.com> 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 $(<filename) command substitution, which is equivalent to
- $(cat filename)
-new tilde prefixes that expand to directories from the directory stack
-new `**' arithmetic operator to do exponentiation
-case-insensitive globbing (filename expansion)
-menu completion a la tcsh
-`magic-space' history expansion function like tcsh
-the readline inputrc `language' has a new file inclusion directive ($include)
-
-Bash-2.01 contained only a few new features:
-
-new `GROUPS' builtin array variable containing the user's group list
-new bindable readline commands: history-and-alias-expand-line and
- alias-expand-line
-
-Bash-2.0 contained extensive changes and new features from bash-1.14.7.
-Here's a short list:
-
-new `time' reserved word to time pipelines, shell builtins, and
- shell functions
-one-dimensional arrays with a new compound assignment statement,
- appropriate expansion constructs and modifications to some
- of the builtins (read, declare, etc.) to use them
-new quoting syntaxes for ANSI-C string expansion and locale-specific
- string translation
-new expansions to do substring extraction, pattern replacement, and
- indirect variable expansion
-new builtins: `disown' and `shopt'
-new variables: HISTIGNORE, SHELLOPTS, PIPESTATUS, DIRSTACK, GLOBIGNORE,
- MACHTYPE, BASH_VERSINFO
-special handling of many unused or redundant variables removed
- (e.g., $notify, $glob_dot_filenames, $no_exit_on_failed_exec)
-dynamic loading of new builtin commands; many loadable examples provided
-new prompt expansions: \a, \e, \n, \H, \T, \@, \v, \V
-history and aliases available in shell scripts
-new readline variables: enable-keypad, mark-directories, input-meta,
- visible-stats, disable-completion, comment-begin
-new readline commands to manipulate the mark and operate on the region
-new readline emacs mode commands and bindings for ksh-88 compatibility
-updated and extended builtins
-new DEBUG trap
-expanded (and now documented) restricted shell mode
-
-implementation stuff:
-autoconf-based configuration
-nearly all of the bugs reported since version 1.14 have been fixed
-most builtins converted to use builtin `getopt' for consistency
-most builtins use -p option to display output in a reusable form
- (for consistency)
-grammar tighter and smaller (66 reduce-reduce conflicts gone)
-lots of code now smaller and faster
-test suite greatly expanded
-
-B2) Are there any user-visible incompatibilities between bash-2.05b and
- bash-1.14.7?
-
-There are a few incompatibilities between version 1.14.7 and version 2.05b.
-They are detailed in the file COMPAT in the bash distribution. That file
-is not meant to be all-encompassing; send mail to bash-maintainers@gnu.org
-if if you find something that's not mentioned there.
-
-Section C: Differences from other Unix shells
-
-C1) How does bash differ from sh, the Bourne shell?
-
-This is a non-comprehensive list of features that differentiate bash
-from the SVR4.2 shell. The bash manual page explains these more
-completely.
-
-Things bash has that sh does not:
- long invocation options
- [+-]O invocation option
- -l invocation option
- `!' reserved word to invert pipeline return value
- `time' reserved word to time pipelines and shell builtins
- the `function' reserved word
- the `select' compound command and reserved word
- arithmetic for command: for ((expr1 ; expr2; expr3 )); do list; done
- new $'...' and $"..." quoting
- the $(...) form of command substitution
- the $(<filename) form of command substitution, equivalent to
- $(cat filename)
- the ${#param} parameter value length operator
- the ${!param} indirect parameter expansion operator
- the ${!param*} prefix expansion operator
- the ${param:offset[:length]} parameter substring operator
- the ${param/pat[/string]} parameter pattern substitution operator
- expansions to perform substring removal (${p%[%]w}, ${p#[#]w})
- expansion of positional parameters beyond $9 with ${num}
- variables: BASH, BASH_VERSION, BASH_VERSINFO, UID, EUID, REPLY,
- TIMEFORMAT, PPID, PWD, OLDPWD, SHLVL, RANDOM, SECONDS,
- LINENO, HISTCMD, HOSTTYPE, OSTYPE, MACHTYPE, HOSTNAME,
- ENV, PS3, PS4, DIRSTACK, PIPESTATUS, HISTSIZE, HISTFILE,
- HISTFILESIZE, HISTCONTROL, HISTIGNORE, GLOBIGNORE, GROUPS,
- PROMPT_COMMAND, FCEDIT, FIGNORE, IGNOREEOF, INPUTRC,
- SHELLOPTS, OPTERR, HOSTFILE, TMOUT, FUNCNAME, histchars,
- auto_resume
- DEBUG trap
- ERR trap
- variable arrays with new compound assignment syntax
- redirections: <>, &>, >|, <<<, [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.
+++ /dev/null
-.\"
-.\" MAN PAGE COMMENTS to
-.\"
-.\" Chet Ramey
-.\" Case Western Reserve University
-.\" chet.ramey@case.edu
-.\"
-.\" Last Change: Thu Jan 1 14:40:18 EST 2015
-.\"
-.\" bash_builtins, strip all but Built-Ins section
-.if \n(zZ=1 .ig zZ
-.if \n(zY=1 .ig zY
-.TH BASH 1 "2015 January 1" "GNU Bash 4.4"
-.\"
-.\" 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\a\\*(]X\au-3p \{\\*(]X
-.br\}
-.el \\*(]X\h\a|\\n()Iu+\\n()Ru\a\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) 1989-2015 by the Free Software Foundation, Inc.
-.if t Bash is Copyright \(co 1989-2015 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 ,
-the first argument is assigned to
-.B $0
-and any remaining arguments are assigned to the positional parameters.
-The assignment to
-.B $0
-sets the name of the shell, which is used in warning and error messages.
-.TP
-.B \-i
-If the
-.B \-i
-option is present, the shell is
-.IR interactive .
-.TP
-.B \-l
-Make
-.B bash
-act as if it had been invoked as a login shell (see
-.SM
-.B INVOCATION
-below).
-.TP
-.B \-r
-If the
-.B \-r
-option is present, the shell becomes
-.I restricted
-(see
-.SM
-.B "RESTRICTED SHELL"
-below).
-.TP
-.B \-s
-If the
-.B \-s
-option is present, or if no arguments remain after option
-processing, then commands are read from the standard input.
-This option allows the positional parameters to be set
-when invoking an interactive shell.
-.TP
-.B \-D
-A list of all double-quoted strings preceded by \fB$\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).
-See
-.SM
-.B "SEE ALSO"
-below for a reference to a document that details how posix mode affects
-bash's behavior.
-.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 neither
-\fIrshd\fP nor \fIsshd\fP 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|| & && ; ;; ( ) | |& <newline>\fP
-.if n \fB|| & && ; ;; ( ) | |& <newline>\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 coproc do done elif else esac fi for function if in select then until while { } time [[ ]]
-.if t ! case coproc 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 error, in addition to its
-standard output, is connected to
-\fIcommand2\fP's standard input through the pipe;
-it is shorthand for \fB2>&1 |\fP.
-This implicit redirection of the standard error to the standard output 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 <newline> .
-.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,
-as if the \fBextglob\fP shell option were enabled.
-The \fB=\fP operator is equivalent to \fB==\fP.
-If the
-.B nocasematch
-shell option 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
-.B nocasematch
-shell option 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 expansion,
-command substitution, process substitution and quote removal.
-Each \fIpattern\fP examined is expanded using tilde
-expansion, parameter and variable expansion, arithmetic expansion,
-command substitution, and process substitution.
-If the
-.B nocasematch
-shell option 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 file descriptors are not available in subshells.
-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
-Since the coprocess is created as an asynchronous command,
-the \fBcoproc\fP command always returns success.
-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,
-with one exception: If the \fBfunction\fP reserved word is used, but the
-parentheses are not supplied, the braces are required.
-\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 <newline>. If a \fB\e\fP<newline> pair
-appears, and the backslash is not itself quoted, the \fB\e\fP<newline>
-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 <newline> .
-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 (\fIdeclaration\fP 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.
-This includes arguments to builtin commands such as \fBdeclare\fP that
-accept assignment statements (\fIdeclaration\fP commands).
-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.
-.PP
-A variable can be assigned the \fInameref\fP attribute using the
-\fB\-n\fP option to the \fBdeclare\fP or \fBlocal\fP builtin commands
-(see the descriptions of \fBdeclare\fP and \fBlocal\fP below)
-to create a \fInameref\fP, or a reference to another variable.
-This allows variables to be manipulated indirectly.
-Whenever the nameref variable is referenced, assigned to, unset, or has
-its attributes modified (other than the \fInameref\fP attribute itself), the
-operation is actually performed on the variable specified by the nameref
-variable's value.
-A nameref is commonly used within shell functions to refer to a variable
-whose name is passed as an argument to the function.
-For instance, if a variable name is passed to a shell function as its first
-argument, running
-.sp .5
-.RS
-.if t \f(CWdeclare -n ref=$1\fP
-.if n declare -n ref=$1
-.RE
-.sp .5
-inside the function creates a nameref variable \fBref\fP whose value is
-the variable name passed as the first argument.
-References and assignments to \fBref\fP, and changes to its attributes,
-are treated as references, assignments, and attribute modifications
-to the variable whose name was passed as \fB$1\fP.
-If the control variable in a \fBfor\fP loop has the nameref attribute,
-the list of words can be a list of shell variables, and a name reference
-will be established for each word in the list, in turn, when the loop is
-executed.
-Array variables cannot be given the \fBnameref\fP attribute.
-However, nameref variables can reference array variables and subscripted
-array variables.
-Namerefs can be unset using the \fB\-n\fP option to the \fBunset\fP builtin.
-Otherwise, if \fBunset\fP is executed with the name of a nameref variable
-as an argument, the variable referenced by the nameref variable will be unset.
-.SS Positional Parameters
-.PP
-A
-.I positional parameter
-is a parameter denoted by one or more
-digits, other than the single digit 0. Positional parameters are
-assigned from the shell's arguments when it is invoked,
-and may be reassigned using the
-.B set
-builtin command. Positional parameters may not be assigned to
-with assignment statements. The positional parameters are
-temporarily replaced when a shell function is executed (see
-.SM
-.B FUNCTIONS
-below).
-.PP
-When a positional parameter consisting of more than a single
-digit is expanded, it must be enclosed in braces (see
-.SM
-.B EXPANSION
-below).
-.SS Special Parameters
-.PP
-The shell treats several parameters specially. These parameters may
-only be referenced; assignment to them is not allowed.
-.PD 0
-.TP
-.B *
-Expands to the positional parameters, starting from one.
-When the expansion is not within double quotes, each positional parameter
-expands to a separate word.
-In contexts where it is performed, those words
-are subject to further word splitting and pathname expansion.
-When the expansion occurs within double quotes, it expands to a single word
-with the value of each parameter separated by the first character of the
-.SM
-.B IFS
-special variable. That is, "\fB$*\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 job most recently placed into the
-background, whether executed as an asynchronous command or using
-the \fBbg\fP builtin (see
-.SM
-.B "JOB CONTROL"
-below).
-.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_COMPAT
-The value is used to set the shell's compatibility level.
-See the description of the \fBshopt\fP builtin below under
-\fBSHELL BUILTIN COMMANDS\fP
-for a description of the various compatibility
-levels and their effects.
-The value may be a decimal number (e.g., 4.2) or an integer (e.g., 42)
-corresponding to the desired compatibility level.
-If \fBBASH_COMPAT\fP is unset or set to the empty string, the compatibility
-level is set to the default for the current version.
-If \fBBASH_COMPAT\fP is set to a value that is not one of the valid
-compatibility levels, the shell prints an error message and sets the
-compatibility level to the default for the current version.
-The valid compatibility levels correspond to the compatibility options
-accepted by the \fBshopt\fP builtin described below (for example,
-\fBcompat42\fP means that 4.2 and 42 are valid values).
-The current version is also a valid value.
-.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 CHILD_MAX
-Set the number of exited child status values for the shell to remember.
-Bash will not allow this value to be decreased below a POSIX-mandated
-minimum, and there is a maximum value (currently 8192) that this may
-not exceed.
-The minimum value is system-dependent.
-.TP
-.B COLUMNS
-Used by the \fBselect\fP compound command to determine the terminal width
-when printing selection lists.
-Automatically set if the
-.B checkwinsize
-option is enabled or 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 a 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 a 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
-``<space><tab><newline>''.
-.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$\fP.
-.TP
-.B LC_NUMERIC
-This variable determines the locale category used for number formatting.
-.TP
-.B LINES
-Used by the \fBselect\fP compound command to determine the column length
-for printing selection lists.
-Automatically set if the
-.B checkwinsize
-option is enabled or in an interactive shell upon receipt of a
-.SM
-.BR SIGWINCH .
-.TP
-.B MAIL
-If this parameter is set to a file or directory name and the
-.SM
-.B MAILPATH
-variable is not set,
-.B bash
-informs the user of the arrival of mail in the specified file or
-Maildir-format directory.
-.TP
-.B MAILCHECK
-Specifies how
-often (in seconds)
-.B bash
-checks for mail. The default is 60 seconds. When it is time to check
-for mail, the shell does so before displaying the primary prompt.
-If this variable is unset, or set to a value that is not a number
-greater than or equal to zero, the shell disables mail checking.
-.TP
-.B MAILPATH
-A colon-separated list of filenames to be checked for mail.
-The message to be printed when mail arrives in a particular file
-may be specified by separating the filename from the message with a `?'.
-When used in the text of the message, \fB$_\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\et%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 a line of input after issuing the
-primary prompt.
-.B Bash
-terminates after waiting for that number of seconds if a complete
-line of 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.
-Unless otherwise noted, indexed array indices must be non-negative integers.
-.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.
-When assigning to an indexed array, if
-.I name
-is subscripted by a negative number, that number is
-interpreted as relative to one greater than the maximum index of
-\fIname\fP, so negative indices count back from the end of the
-array, and an index of \-1 references the last element.
-.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.
-If the
-.I subscript
-used to reference an element of an indexed array
-evaluates to a number less than zero, it is
-interpreted as relative to one greater than the maximum index of the array,
-so negative indices count back from the end of the
-array, and an index of \-1 references the last element.
-.PP
-Referencing an array variable without a subscript is equivalent to
-referencing the array with a subscript of 0.
-Any reference to a variable using a valid subscript is legal, and
-.B bash
-will create an array if necessary.
-.PP
-An array variable is considered set if a subscript has been assigned a
-value. The null string is a valid value.
-.PP
-It is possible to obtain the keys (indices) of an array as well as the values.
-${\fB!\fP\fIname\fP[\fI@\fP]} and ${\fB!\fP\fIname\fP[\fI*\fP]}
-expand to the indices assigned in array variable \fIname\fP.
-The treatment when in double quotes is similar to the expansion of the
-special parameters \fI@\fP and \fI*\fP within double quotes.
-.PP
-The
-.B unset
-builtin is used to destroy arrays. \fBunset\fP \fIname\fP[\fIsubscript\fP]
-destroys the array element at index \fIsubscript\fP.
-Negative subscripts to indexed arrays are interpreted as described above.
-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 and variable expansion, 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.
-This is performed at the
-same time as tilde, parameter, variable, and arithmetic expansion and
-command substitution.
-.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,
-using the default C locale.
-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.
-The \fIparameter\fP is a shell parameter as described above
-\fBPARAMETERS\fP) or an array reference (\fBArrays\fP).
-.PD
-.PP
-If the first character of \fIparameter\fP is an exclamation point (\fB!\fP),
-and \fIparameter\fP is not a \fInameref\fP,
-it introduces a level of variable indirection.
-\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.
-If \fIparameter\fP is a nameref, this expands to the name of the
-variable referenced by \fIparameter\fP instead of performing the
-complete indirect expansion.
-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
-(e.g., \fB:-\fP),
-\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 the value of \fIparameter\fP
-starting at the character specified by \fIoffset\fP.
-If \fIparameter\fP is \fB@\fP, an indexed array subscripted by
-\fB@\fP or \fB*\fP, or an associative array name, the results differ as
-described below.
-If \fIlength\fP is omitted, expands to the substring of the value of
-\fIparameter\fP starting at the character specified by \fIoffset\fP
-and extending to the end of the value.
-\fIlength\fP and \fIoffset\fP are arithmetic expressions (see
-.SM
-.B
-ARITHMETIC EVALUATION
-below).
-.sp 1
-If \fIoffset\fP evaluates to a number less than zero, the value
-is used as an offset in characters
-from the end of the value of \fIparameter\fP.
-If \fIlength\fP evaluates to a number less than zero,
-it is interpreted as an offset in characters
-from the end of the value of \fIparameter\fP rather than
-a number of characters, and the expansion is the characters between
-\fIoffset\fP and that result.
-Note that a negative offset must be separated from the colon by at least
-one space to avoid being confused with the \fB:-\fP expansion.
-.sp 1
-If \fIparameter\fP is \fB@\fP, the result is \fIlength\fP positional
-parameters beginning at \fIoffset\fP.
-A negative \fIoffset\fP is taken relative to one greater than the greatest
-positional parameter, so an offset of -1 evaluates to the last positional
-parameter.
-It is an expansion error if \fIlength\fP evaluates to a number less than
-zero.
-.sp 1
-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.
-It is an expansion error if \fIlength\fP evaluates to a number less than
-zero.
-.sp 1
-Substring expansion applied to an associative array produces undefined
-results.
-.sp 1
-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.
-If
-.I parameter
-is an indexed array name subscripted by a negative number, that number is
-interpreted as relative to one greater than the maximum index of
-\fIparameter\fP, so negative indices count back from the end of the
-array, and an index of \-1 references the last element.
-.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
-${\fIparameter\fP\fB/\fP\fIpattern\fP\fB/\fP\fIstring\fP}
-\fBPattern substitution\fP.
-The \fIpattern\fP is expanded to produce a pattern just as in
-pathname expansion.
-\fIParameter\fP is expanded and the longest match of \fIpattern\fP
-against its value is replaced with \fIstring\fP.
-If \fIpattern\fP begins with \fB/\fP, all matches of \fIpattern\fP are
-replaced with \fIstring\fP. Normally only the first match is replaced.
-If \fIpattern\fP begins with \fB#\fP, it must match at the beginning
-of the expanded value of \fIparameter\fP.
-If \fIpattern\fP begins with \fB%\fP, it must match at the end
-of the expanded value of \fIparameter\fP.
-If \fIstring\fP is null, matches of \fIpattern\fP are deleted
-and the \fB/\fP following \fIpattern\fP may be omitted.
-If the
-.B nocasematch
-shell option is enabled, the match is performed without regard to the case
-of alphabetic characters.
-If
-.I parameter
-is
-.B @
-or
-.BR * ,
-the substitution operation is applied to each positional
-parameter in turn, and the expansion is the resultant list.
-If
-.I parameter
-is an array variable subscripted with
-.B @
-or
-.BR * ,
-the substitution operation is applied to each member of the
-array in turn, and the expansion is the resultant list.
-.TP
-${\fIparameter\fP\fB^\fP\fIpattern\fP}
-.PD 0
-.TP
-${\fIparameter\fP\fB^^\fP\fIpattern\fP}
-.TP
-${\fIparameter\fP\fB,\fP\fIpattern\fP}
-.TP
-${\fIparameter\fP\fB,,\fP\fIpattern\fP}
-.PD
-\fBCase modification\fP.
-This expansion modifies the case of alphabetic characters in \fIparameter\fP.
-The \fIpattern\fP is expanded to produce a pattern just as in
-pathname expansion.
-Each character in the expanded value of \fIparameter\fP is tested against
-\fIpattern\fP, and, if it matches the pattern, its case is converted.
-The pattern should not attempt to match more than one character.
-The \fB^\fP operator converts lowercase letters matching \fIpattern\fP
-to uppercase; the \fB,\fP operator converts matching uppercase letters
-to lowercase.
-The \fB^^\fP and \fB,,\fP expansions convert each matched character in the
-expanded value; the \fB^\fP and \fB,\fP expansions match and convert only
-the first character in the expanded value.
-If \fIpattern\fP is omitted, it is treated like a \fB?\fP, which matches
-every character.
-If
-.I parameter
-is
-.B @
-or
-.BR * ,
-the case modification operation is applied to each positional
-parameter in turn, and the expansion is the resultant list.
-If
-.I parameter
-is an array variable subscripted with
-.B @
-or
-.BR * ,
-the case modification operation is applied to each member of the
-array in turn, and the expansion is the resultant list.
-.TP
-${\fIparameter\fP\fB@\fP\fIoperator\fP}
-\fBParameter transformation\fP.
-The expansion is either a transformation of the value of \fIparameter\fP
-or information about \fIparameter\fP itself, depending on the value of
-\fIoperator\fP. Each \fIoperator\fP is a single letter:
-.sp 1
-.RS
-.PD 0
-.TP
-.B Q
-The expansion is a string that is the value of \fIparameter\fP quoted in a
-format that can be reused as input.
-.TP
-.B E
-The expansion is a string that is the value of \fIparameter\fP with backslash
-escape sequences expanded as with the \fB$'...'\fP quoting mechansim.
-.TP
-.B P
-The expansion is a string that is the result of expanding the value of
-\fIparameter\fP as if it were a prompt string (see \fBPROMPTING\fP below).
-.TP
-.B A
-The expansion is a string in the form of a \fBdeclare\fP command that, if
-evaluated, will recreate \fIparameter\fP with its attributes and value.
-.TP
-.B a
-The expansion is a string consisting of flag values representing
-\fIparameter\fP's attributes.
-.PD
-.PP
-If
-.I parameter
-is
-.B @
-or
-.BR * ,
-the operation is applied to each positional
-parameter in turn, and the expansion is the resultant list.
-If
-.I parameter
-is an array variable subscripted with
-.B @
-or
-.BR * ,
-the case modification operation is applied to each member of the
-array in turn, and the expansion is the resultant list.
-.sp 1
-The result of the expansion is subject to word splitting and pathname
-expansion as described below.
-.RE
-.SS Command Substitution
-.PP
-\fICommand substitution\fP allows the output of a command to replace
-the command name. There are two forms:
-.RS
-.PP
-\fB$(\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 and variable expansion,
-command substitution, and quote removal.
-The result is treated as the arithmetic expression to be evaluated.
-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 using these characters as field terminators.
-If
-.SM
-.B IFS
-is unset, or its
-value is exactly
-.BR <space><tab><newline> ,
-the default, then
-sequences of
-.BR <space> ,
-.BR <tab> ,
-and
-.B <newline>
-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.
-If the \fBnocaseglob\fP option is set, the matching against the patterns in
-.SM
-.B GLOBIGNORE
-is performed without regard to case.
-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 falls 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
-the corresponding TCP 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
-the corresponding UDP 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 (or file descriptor \fIn\fP if \fIn\fP is specified) for a command.
-.PP
-The format of here-documents is:
-.RS
-.PP
-.nf
-[\fIn\fP]\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,
-the character sequence
-.B \e<newline>
-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
-[\fIn\fP]\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 and word splitting are not performed.
-The result is supplied as a single string to the command on its
-standard input (or file descriptor \fIn\fP if \fIn\fP is specified).
-.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 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 \-R \fIvarname\fP
-True if the shell variable
-.I varname
-is set and is a name reference.
-.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.
-When used with the \fB[[\fP command, this performs pattern matching as
-described above (\fBCompound Commands\fP).
-.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,
-generally invalid options or missing arguments.
-.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\-completion\-prefix (Off)
-If set to \fBOn\fP, when listing completions, readline displays the
-common prefix of the set of possible completions using a different color.
-The color definitions are taken from the value of the \fBLS_COLORS\fP
-environment variable.
-.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\-bracketed\-paste (Off)
-When set to \fBOn\fP, readline will configure the terminal in a way
-that will enable it to insert each paste into the editing buffer as a
-single string of characters, instead of treating each character as if
-it had been read from the keyboard. This can prevent pasted characters
-from being interpreted as editing commands.
-.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 (unset)
-Set the maximum number of history entries saved in the history list.
-If set to zero, any existing history entries are deleted and no new entries
-are saved.
-If set to a value less than zero, the number of history entries is not
-limited.
-By default, the number of history entries 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 emacs\-mode\-string (@)
-This string is displayed immediately before the last line of the primary
-prompt when emacs editing mode is active. The value is expanded like a
-key binding, so the standard set of meta- and control prefixes and
-backslash escape sequences is available.
-Use the \e1 and \e2 escapes to begin and end sequences of
-non-printing characters, which can be used to embed a terminal control
-sequence into the mode string.
-.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 show\-mode\-in\-prompt (Off)
-If set to \fBOn\fP, add a character to the beginning of the prompt
-indicating the editing mode: emacs (@), vi command (:) or vi
-insertion (+).
-.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 vi\-cmd\-mode\-string ((cmd))
-This string is displayed immediately before the last line of the primary
-prompt when vi editing mode is active and in command mode.
-The value is expanded like a
-key binding, so the standard set of meta- and control prefixes and
-backslash escape sequences is available.
-Use the \e1 and \e2 escapes to begin and end sequences of
-non-printing characters, which can be used to embed a terminal control
-sequence into the mode string.
-.TP
-.B vi\-ins\-mode\-string ((ins))
-This string is displayed immediately before the last line of the primary
-prompt when vi editing mode is active and in insertion mode.
-The value is expanded like a
-key binding, so the standard set of meta- and control prefixes and
-backslash escape sequences is available.
-Use the \e1 and \e2 escapes to begin and end sequences of
-non-printing characters, which can be used to embed a terminal control
-sequence into the mode string.
-.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 both 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
-.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 word,
-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 \fIend\-of\-file\fP (usually C\-d)
-The character indicating end-of-file as set, for example, by
-.if t \f(CWstty\fP.
-.if n ``stty''.
-If this character is read when there are no characters
-on the line, and point is at the beginning of the line, Readline
-interprets it as the end of input and returns
-.SM
-.BR EOF .
-.TP
-.B delete\-char (C\-d)
-Delete the character at point.
-If this function is bound to the
-same character as the tty \fBEOF\fP character, as \fBC\-d\fP
-commonly is, see above for the effects.
-.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
-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
-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 nor 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.
-.TP
-.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\-<space>)
-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.
-If the
-.B nocasematch
-shell option is enabled, the match is performed without regard to the case
-of alphabetic characters.
-.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 -o bashdefault -o default
-.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 a shell with history enabled 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 word. This is usually the last argument, but will expand to the
-zeroth word if there is only one word in the line.
-.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 [\fB\-m\fP \fIkeymap\fP] \fIkeyseq\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.
-On systems that support it, the \fB\-@\fP option presents the extended
-attributes associated with a file as a directory.
-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 nosort
-Tell readline not to sort the list of possible completions alphabetically.
-.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\-aAfFgilnrtux\fP] [\fB\-p\fP] [\fIname\fP[=\fIvalue\fP] ...]
-.PD 0
-.TP
-\fBtypeset\fP [\fB\-aAfFgilnrtux\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,
-other than \fB\-f\fP and \fB\-F\fP, 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 \-n
-Give each \fIname\fP the \fInameref\fP attribute, making
-it a name reference to another variable.
-That other variable is defined by the value of \fIname\fP.
-All references, assignments, and attribute modifications
-to \fIname\fP, except for changing the
-\fB\-n\fP attribute itself, are performed on the variable referenced by
-\fIname\fP's value.
-The nameref attribute cannot be applied to array variables.
-.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.
-When using \fB\-a\fP or \fB\-A\fP and the compound assignment syntax to
-create array variables, additional attributes do not take effect until
-subsequent assignments.
-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 the \fB\-a\fP nor the \fB\-r\fP option
-is supplied, 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 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.
-If \fIname\fP is \-, the set of shell options is made local to the function
-in which \fBlocal\fP is invoked: shell options changed using the
-\fBset\fP builtin inside the function are restored to their original values
-when the function returns.
-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\-d\fP \fIdelim\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\-d\fP \fIdelim\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 \-d
-The first character of \fIdelim\fP is used to terminate each input line,
-rather than newline.
-.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.
-If no argument is specified, conversion behaves as if -1 had been given.
-This is an exception to the usual \fBprintf\fP behavior.
-.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 using the same rules the shell
-uses for expansion (described above under \fBWord Splitting\fP).
-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 honors 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 (or a specified number of characters)
-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 \fBread\fP times out, \fBread\fP saves any partial input read into
-the specified variable \fIname\fP.
-If \fItimeout\fP is 0, \fBread\fP returns immediately, without trying to
-read any data. The exit status 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 \fBreturn\fP is executed by a trap handler, the last command used to
-determine the status is the last command executed before the trap handler.
-if \fBreturn\fP is executed during a \fBDEBUG\fP trap, the last command
-used to determine the status is the last command executed by the trap
-handler before \fBreturn\fP was invoked.
-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\fP mode, 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.
-.if t .sp 0.5
-.if n .sp 1
-If a compound command or shell function executes in a context
-where \fB\-e\fP is being ignored,
-none of the commands executed within the compound command or function body
-will be affected by the \fB\-e\fP setting, even if \fB\-e\fP is set
-and a command returns a failure status.
-If a compound command or shell function sets \fB\-e\fP while executing in
-a context where \fB\-e\fP is ignored, that setting will not have any
-effect until the compound command or the command containing the function
-call completes.
-.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).
-See
-.SM
-.B "SEE ALSO"
-below for a reference to a document that details how posix mode affects
-bash's behavior.
-.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 settings controlling optional shell behavior.
-The settings can be either those listed below, or, if the
-.B \-o
-option is used, those available with the
-.B \-o
-option to the \fBset\fP builtin command.
-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 \fIposix\fP 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 compat42
-If set,
-.B bash
-does not process the replacement string in the pattern substitution word
-expansion using quote removal.
-.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), the shell simulates
-a call to \fBreturn\fP.
-.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 bracket expressions (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,
-when performing pattern substitution word expansions,
-or when filtering possible completions as part of programmable completion.
-.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
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-If no arguments are supplied or if only
-.B \-p
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-.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
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-is executed on exit from the shell.
-If a
-.I sigspec
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-.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
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-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
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-a pipeline (which may consist of a single simple
-command), a list, or a compound command returns 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 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 using
-.BR ! .
-These are the same conditions obeyed by the \fBerrexit\fP (\fB\-e\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\-HSabcdefiklmnpqrstuvxPT\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 \-k
-The maximum number of kqueues that may be allocated
-.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 \-P
-The maximum number of pseudoterminals
-.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 \-P ,
-.BR \-T ,
-.BR \-b ,
-.BR \-k ,
-.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] [\-\fBn\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 the
-.B \-n
-option is supplied, and \fIname\fP is a variable with the \fInameref\fP
-attribute, \fIname\fP will be unset rather than the variable it
-references.
-\fB\-n\fP has no effect if the \fB\-f\fP option is supplied.
-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 [\fB\-n\fP] [\fIn ...\fP]
-Wait for each specified child 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 the \fB\-n\fP option is supplied, \fBwait\fP waits for any job to
-terminate and returns its exit status.
-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 --
-http://pubs.opengroup.org/onlinepubs/9699919799/
-.TP
-http://tiswww.case.edu/~chet/bash/POSIX -- a description of posix mode
-.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
+++ /dev/null
-@ignore
-Copyright (C) 1988-2015 Free Software Foundation, Inc.
-@end ignore
-
-@set LASTCHANGE Thu Jan 1 14:44:06 EST 2015
-
-@set EDITION 4.4
-@set VERSION 4.4
-
-@set UPDATED 1 January 2015
-@set UPDATED-MONTH January 2015
+++ /dev/null
-#
-# 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
+++ /dev/null
-/* chartypes.h -- extend ctype.h */
-
-/* Copyright (C) 2001 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 <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef _SH_CHARTYPES_H
-#define _SH_CHARTYPES_H
-
-#include <ctype.h>
-
-/* Jim Meyering writes:
-
- "... Some ctype macros are valid only for character codes that
- isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
- using /bin/cc or gcc but without giving an ansi option). So, all
- ctype uses should be through macros like ISPRINT... If
- STDC_HEADERS is defined, then autoconf has verified that the ctype
- macros don't need to be guarded with references to isascii. ...
- Defining IN_CTYPE_DOMAIN to 1 should let any compiler worth its salt
- eliminate the && through constant folding."
- Solaris defines some of these symbols so we must undefine them first. */
-
-#if STDC_HEADERS || (!defined (isascii) && !HAVE_ISASCII)
-# define IN_CTYPE_DOMAIN(c) 1
-#else
-# define IN_CTYPE_DOMAIN(c) isascii(c)
-#endif
-
-#if !defined (isspace) && !defined (HAVE_ISSPACE)
-# define isspace(c) ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) == '\f')
-#endif
-
-#if !defined (isprint) && !defined (HAVE_ISPRINT)
-# define isprint(c) (isalpha(c) || isdigit(c) || ispunct(c))
-#endif
-
-#if defined (isblank) || defined (HAVE_ISBLANK)
-# define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c))
-#else
-# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
-#endif
-
-#if defined (isgraph) || defined (HAVE_ISGRAPH)
-# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (c))
-#else
-# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (c) && !isspace (c))
-#endif
-
-#if !defined (isxdigit) && !defined (HAVE_ISXDIGIT)
-# define isxdigit(c) (((c) >= '0' && (c) <= '9') || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F'))
-#endif
-
-#undef ISPRINT
-
-#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint ((unsigned char)c))
-#define ISDIGIT(c) (IN_CTYPE_DOMAIN (c) && isdigit ((unsigned char)c))
-#define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum ((unsigned char)c))
-#define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha ((unsigned char)c))
-#define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl ((unsigned char)c))
-#define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower ((unsigned char)c))
-#define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct ((unsigned char)c))
-#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace ((unsigned char)c))
-#define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper ((unsigned char)c))
-#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit ((unsigned char)c))
-
-#define ISLETTER(c) (ISALPHA(c))
-
-#define DIGIT(c) ((c) >= '0' && (c) <= '9')
-
-#define ISWORD(c) (ISLETTER(c) || DIGIT(c) || ((c) == '_'))
-
-#define HEXVALUE(c) \
- (((c) >= 'a' && (c) <= 'f') \
- ? (c)-'a'+10 \
- : (c) >= 'A' && (c) <= 'F' ? (c)-'A'+10 : (c)-'0')
-
-#ifndef ISOCTAL
-# define ISOCTAL(c) ((c) >= '0' && (c) <= '7')
-#endif
-#define OCTVALUE(c) ((c) - '0')
-
-#define TODIGIT(c) ((c) - '0')
-#define TOCHAR(c) ((c) + '0')
-
-#define TOLOWER(c) (ISUPPER(c) ? tolower(c) : (c))
-#define TOUPPER(c) (ISLOWER(c) ? toupper(c) : (c))
-
-#ifndef TOCTRL
- /* letter to control char -- ASCII. The TOUPPER is in there so \ce and
- \cE will map to the same character in $'...' expansions. */
-# define TOCTRL(x) (TOUPPER(x) & 037)
-#endif
-#ifndef UNCTRL
- /* control char to letter -- ASCII */
-# define UNCTRL(x) (TOUPPER(x) ^ 0x40)
-#endif
-
-#endif /* _SH_CHARTYPES_H */
+++ /dev/null
-/* posixjmp.h -- wrapper for setjmp.h with changes for POSIX systems. */
-
-/* Copyright (C) 1987,1991 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 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 <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef _POSIXJMP_H_
-#define _POSIXJMP_H_
-
-#include <setjmp.h>
-
-/* This *must* be included *after* config.h */
-
-#if defined (HAVE_POSIX_SIGSETJMP)
-# define procenv_t sigjmp_buf
-# if !defined (__OPENNT)
-# define setjmp_nosigs(x) sigsetjmp((x), 0)
-# define setjmp_sigs(x) sigsetjmp((x), 1)
-# undef longjmp
-# define longjmp(x, n) siglongjmp((x), (n))
-# endif /* !__OPENNT */
-#else
-# define procenv_t jmp_buf
-# define setjmp_nosigs setjmp
-# define setjmp_sigs setjmp
-#endif
-
-#endif /* _POSIXJMP_H_ */
+++ /dev/null
-/* jobs.c - functions that make children, remember them, and handle their termination. */
-
-/* This file works with both POSIX and BSD systems. It implements job
- control. */
-
-/* Copyright (C) 1989-2013 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 <http://www.gnu.org/licenses/>.
-*/
-
-#include "config.h"
-
-#include "bashtypes.h"
-#include "trap.h"
-#include <stdio.h>
-#include <signal.h>
-#include <errno.h>
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
-
-#include "posixtime.h"
-
-#if defined (HAVE_SYS_RESOURCE_H) && defined (HAVE_WAIT3) && !defined (_POSIX_VERSION) && !defined (RLIMTYPE)
-# include <sys/resource.h>
-#endif /* !_POSIX_VERSION && HAVE_SYS_RESOURCE_H && HAVE_WAIT3 && !RLIMTYPE */
-
-#if defined (HAVE_SYS_FILE_H)
-# include <sys/file.h>
-#endif
-
-#include "filecntl.h"
-#include <sys/ioctl.h>
-#if defined (HAVE_SYS_PARAM_H)
-#include <sys/param.h>
-#endif
-
-#if defined (BUFFERED_INPUT)
-# include "input.h"
-#endif
-
-/* Need to include this up here for *_TTY_DRIVER definitions. */
-#include "shtty.h"
-
-/* Define this if your output is getting swallowed. It's a no-op on
- machines with the termio or termios tty drivers. */
-/* #define DRAIN_OUTPUT */
-
-/* For the TIOCGPGRP and TIOCSPGRP ioctl parameters on HP-UX */
-#if defined (hpux) && !defined (TERMIOS_TTY_DRIVER)
-# include <bsdtty.h>
-#endif /* hpux && !TERMIOS_TTY_DRIVER */
-
-#include "bashansi.h"
-#include "bashintl.h"
-#include "shell.h"
-#include "jobs.h"
-#include "execute_cmd.h"
-#include "flags.h"
-
-#include "builtins/builtext.h"
-#include "builtins/common.h"
-
-#if !defined (errno)
-extern int errno;
-#endif /* !errno */
-
-#if !defined (HAVE_KILLPG)
-extern int killpg __P((pid_t, int));
-#endif
-
-#if !DEFAULT_CHILD_MAX
-# define DEFAULT_CHILD_MAX 32
-#endif
-
-#if !MAX_CHILD_MAX
-# define MAX_CHILD_MAX 8192
-#endif
-
-#if !defined (DEBUG)
-#define MAX_JOBS_IN_ARRAY 4096 /* production */
-#else
-#define MAX_JOBS_IN_ARRAY 128 /* testing */
-#endif
-
-/* Flag values for second argument to delete_job */
-#define DEL_WARNSTOPPED 1 /* warn about deleting stopped jobs */
-#define DEL_NOBGPID 2 /* don't add pgrp leader to bgpids */
-
-/* Take care of system dependencies that must be handled when waiting for
- children. The arguments to the WAITPID macro match those to the Posix.1
- waitpid() function. */
-
-#if defined (ultrix) && defined (mips) && defined (_POSIX_VERSION)
-# define WAITPID(pid, statusp, options) \
- wait3 ((union wait *)statusp, options, (struct rusage *)0)
-#else
-# if defined (_POSIX_VERSION) || defined (HAVE_WAITPID)
-# define WAITPID(pid, statusp, options) \
- waitpid ((pid_t)pid, statusp, options)
-# else
-# if defined (HAVE_WAIT3)
-# define WAITPID(pid, statusp, options) \
- wait3 (statusp, options, (struct rusage *)0)
-# else
-# define WAITPID(pid, statusp, options) \
- wait3 (statusp, options, (int *)0)
-# endif /* HAVE_WAIT3 */
-# endif /* !_POSIX_VERSION && !HAVE_WAITPID*/
-#endif /* !(Ultrix && mips && _POSIX_VERSION) */
-
-/* getpgrp () varies between systems. Even systems that claim to be
- Posix.1 compatible lie sometimes (Ultrix, SunOS4, apollo). */
-#if defined (GETPGRP_VOID)
-# define getpgid(p) getpgrp ()
-#else
-# define getpgid(p) getpgrp (p)
-#endif /* !GETPGRP_VOID */
-
-/* If the system needs it, REINSTALL_SIGCHLD_HANDLER will reinstall the
- handler for SIGCHLD. */
-#if defined (MUST_REINSTALL_SIGHANDLERS)
-# define REINSTALL_SIGCHLD_HANDLER signal (SIGCHLD, sigchld_handler)
-#else
-# define REINSTALL_SIGCHLD_HANDLER
-#endif /* !MUST_REINSTALL_SIGHANDLERS */
-
-/* Some systems let waitpid(2) tell callers about stopped children. */
-#if !defined (WCONTINUED) || defined (WCONTINUED_BROKEN)
-# undef WCONTINUED
-# define WCONTINUED 0
-#endif
-#if !defined (WIFCONTINUED)
-# define WIFCONTINUED(s) (0)
-#endif
-
-/* The number of additional slots to allocate when we run out. */
-#define JOB_SLOTS 8
-
-typedef int sh_job_map_func_t __P((JOB *, int, int, int));
-
-/* Variables used here but defined in other files. */
-extern int subshell_environment, line_number;
-extern int posixly_correct, shell_level;
-extern int last_command_exit_value, last_command_exit_signal;
-extern int loop_level, breaking;
-extern int executing_list;
-extern int sourcelevel;
-extern int running_trap;
-extern sh_builtin_func_t *this_shell_builtin;
-extern char *shell_name, *this_command_name;
-extern sigset_t top_level_mask;
-extern procenv_t wait_intr_buf;
-extern int wait_signal_received;
-extern WORD_LIST *subst_assign_varlist;
-
-static struct jobstats zerojs = { -1L, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NO_JOB, NO_JOB, 0, 0 };
-struct jobstats js = { -1L, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NO_JOB, NO_JOB, 0, 0 };
-
-struct bgpids bgpids = { 0, 0, 0 };
-
-/* The array of known jobs. */
-JOB **jobs = (JOB **)NULL;
-
-#if 0
-/* The number of slots currently allocated to JOBS. */
-int job_slots = 0;
-#endif
-
-/* The controlling tty for this shell. */
-int shell_tty = -1;
-
-/* The shell's process group. */
-pid_t shell_pgrp = NO_PID;
-
-/* The terminal's process group. */
-pid_t terminal_pgrp = NO_PID;
-
-/* The process group of the shell's parent. */
-pid_t original_pgrp = NO_PID;
-
-/* The process group of the pipeline currently being made. */
-pid_t pipeline_pgrp = (pid_t)0;
-
-#if defined (PGRP_PIPE)
-/* Pipes which each shell uses to communicate with the process group leader
- until all of the processes in a pipeline have been started. Then the
- process leader is allowed to continue. */
-int pgrp_pipe[2] = { -1, -1 };
-#endif
-
-#if 0
-/* The job which is current; i.e. the one that `%+' stands for. */
-int current_job = NO_JOB;
-
-/* The previous job; i.e. the one that `%-' stands for. */
-int previous_job = NO_JOB;
-#endif
-
-/* Last child made by the shell. */
-volatile pid_t last_made_pid = NO_PID;
-
-/* Pid of the last asynchronous child. */
-volatile pid_t last_asynchronous_pid = NO_PID;
-
-/* The pipeline currently being built. */
-PROCESS *the_pipeline = (PROCESS *)NULL;
-
-/* If this is non-zero, do job control. */
-int job_control = 1;
-
-/* Are we running in background? (terminal_pgrp != shell_pgrp) */
-int running_in_background = 0;
-
-/* Call this when you start making children. */
-int already_making_children = 0;
-
-/* If this is non-zero, $LINES and $COLUMNS are reset after every process
- exits from get_tty_state(). */
-int check_window_size = CHECKWINSIZE_DEFAULT;
-
-/* Functions local to this file. */
-
-static sighandler wait_sigint_handler __P((int));
-static sighandler sigchld_handler __P((int));
-static sighandler sigcont_sighandler __P((int));
-static sighandler sigstop_sighandler __P((int));
-
-static int waitchld __P((pid_t, int));
-
-static PROCESS *find_pipeline __P((pid_t, int, int *));
-static PROCESS *find_process __P((pid_t, int, int *));
-
-static char *current_working_directory __P((void));
-static char *job_working_directory __P((void));
-static char *j_strsignal __P((int));
-static char *printable_job_status __P((int, PROCESS *, int));
-
-static PROCESS *find_last_proc __P((int, int));
-static pid_t find_last_pid __P((int, int));
-
-static int set_new_line_discipline __P((int));
-static int map_over_jobs __P((sh_job_map_func_t *, int, int));
-static int job_last_stopped __P((int));
-static int job_last_running __P((int));
-static int most_recent_job_in_state __P((int, JOB_STATE));
-static int find_job __P((pid_t, int, PROCESS **));
-static int print_job __P((JOB *, int, int, int));
-static int process_exit_status __P((WAIT));
-static int process_exit_signal __P((WAIT));
-static int set_job_status_and_cleanup __P((int));
-
-static WAIT job_signal_status __P((int));
-static WAIT raw_job_exit_status __P((int));
-
-static void notify_of_job_status __P((void));
-static void reset_job_indices __P((void));
-static void cleanup_dead_jobs __P((void));
-static int processes_in_job __P((int));
-static void realloc_jobs_list __P((void));
-static int compact_jobs_list __P((int));
-static int discard_pipeline __P((PROCESS *));
-static void add_process __P((char *, pid_t));
-static void print_pipeline __P((PROCESS *, int, int, FILE *));
-static void pretty_print_job __P((int, int, FILE *));
-static void set_current_job __P((int));
-static void reset_current __P((void));
-static void set_job_running __P((int));
-static void setjstatus __P((int));
-static int maybe_give_terminal_to __P((pid_t, pid_t, int));
-static void mark_all_jobs_as_dead __P((void));
-static void mark_dead_jobs_as_notified __P((int));
-static void restore_sigint_handler __P((void));
-#if defined (PGRP_PIPE)
-static void pipe_read __P((int *));
-#endif
-
-static struct pidstat *bgp_alloc __P((pid_t, int));
-static struct pidstat *bgp_add __P((pid_t, int));
-static int bgp_delete __P((pid_t));
-static void bgp_clear __P((void));
-static int bgp_search __P((pid_t));
-static void bgp_prune __P((void));
-
-#if defined (ARRAY_VARS)
-static int *pstatuses; /* list of pipeline statuses */
-static int statsize;
-#endif
-
-/* Used to synchronize between wait_for and other functions and the SIGCHLD
- signal handler. */
-static int sigchld;
-static int queue_sigchld;
-
-#define QUEUE_SIGCHLD(os) (os) = sigchld, queue_sigchld++
-
-#define UNQUEUE_SIGCHLD(os) \
- do { \
- queue_sigchld--; \
- if (queue_sigchld == 0 && os != sigchld) \
- waitchld (-1, 0); \
- } while (0)
-
-static SigHandler *old_tstp, *old_ttou, *old_ttin;
-static SigHandler *old_cont = (SigHandler *)SIG_DFL;
-
-/* A place to temporarily save the current pipeline. */
-static PROCESS *saved_pipeline;
-static int saved_already_making_children;
-
-/* Set this to non-zero whenever you don't want the jobs list to change at
- all: no jobs deleted and no status change notifications. This is used,
- for example, when executing SIGCHLD traps, which may run arbitrary
- commands. */
-static int jobs_list_frozen;
-
-static char retcode_name_buffer[64];
-
-#if !defined (_POSIX_VERSION)
-
-/* These are definitions to map POSIX 1003.1 functions onto existing BSD
- library functions and system calls. */
-#define setpgid(pid, pgrp) setpgrp (pid, pgrp)
-#define tcsetpgrp(fd, pgrp) ioctl ((fd), TIOCSPGRP, &(pgrp))
-
-pid_t
-tcgetpgrp (fd)
- int fd;
-{
- pid_t pgrp;
-
- /* ioctl will handle setting errno correctly. */
- if (ioctl (fd, TIOCGPGRP, &pgrp) < 0)
- return (-1);
- return (pgrp);
-}
-
-#endif /* !_POSIX_VERSION */
-
-/* Initialize the global job stats structure and other bookkeeping variables */
-void
-init_job_stats ()
-{
- js = zerojs;
-}
-
-/* Return the working directory for the current process. Unlike
- job_working_directory, this does not call malloc (), nor do any
- of the functions it calls. This is so that it can safely be called
- from a signal handler. */
-static char *
-current_working_directory ()
-{
- char *dir;
- static char d[PATH_MAX];
-
- dir = get_string_value ("PWD");
-
- if (dir == 0 && the_current_working_directory && no_symbolic_links)
- dir = the_current_working_directory;
-
- if (dir == 0)
- {
- dir = getcwd (d, sizeof(d));
- if (dir)
- dir = d;
- }
-
- return (dir == 0) ? "<unknown>" : dir;
-}
-
-/* Return the working directory for the current process. */
-static char *
-job_working_directory ()
-{
- char *dir;
-
- dir = get_string_value ("PWD");
- if (dir)
- return (savestring (dir));
-
- dir = get_working_directory ("job-working-directory");
- if (dir)
- return (dir);
-
- return (savestring ("<unknown>"));
-}
-
-void
-making_children ()
-{
- if (already_making_children)
- return;
-
- already_making_children = 1;
- start_pipeline ();
-}
-
-void
-stop_making_children ()
-{
- already_making_children = 0;
-}
-
-void
-cleanup_the_pipeline ()
-{
- PROCESS *disposer;
- sigset_t set, oset;
-
- BLOCK_CHILD (set, oset);
- disposer = the_pipeline;
- the_pipeline = (PROCESS *)NULL;
- UNBLOCK_CHILD (oset);
-
- if (disposer)
- discard_pipeline (disposer);
-}
-
-void
-save_pipeline (clear)
- int clear;
-{
- saved_pipeline = the_pipeline;
- if (clear)
- the_pipeline = (PROCESS *)NULL;
- saved_already_making_children = already_making_children;
-}
-
-void
-restore_pipeline (discard)
- int discard;
-{
- PROCESS *old_pipeline;
-
- old_pipeline = the_pipeline;
- the_pipeline = saved_pipeline;
- already_making_children = saved_already_making_children;
- if (discard && old_pipeline)
- discard_pipeline (old_pipeline);
-}
-
-/* Start building a pipeline. */
-void
-start_pipeline ()
-{
- if (the_pipeline)
- {
- cleanup_the_pipeline ();
- pipeline_pgrp = 0;
-#if defined (PGRP_PIPE)
- sh_closepipe (pgrp_pipe);
-#endif
- }
-
-#if defined (PGRP_PIPE)
- if (job_control)
- {
- if (pipe (pgrp_pipe) == -1)
- sys_error (_("start_pipeline: pgrp pipe"));
- }
-#endif
-}
-
-/* Stop building a pipeline. Install the process list in the job array.
- This returns the index of the newly installed job.
- DEFERRED is a command structure to be executed upon satisfactory
- execution exit of this pipeline. */
-int
-stop_pipeline (async, deferred)
- int async;
- COMMAND *deferred;
-{
- register int i, j;
- JOB *newjob;
- sigset_t set, oset;
-
- BLOCK_CHILD (set, oset);
-
-#if defined (PGRP_PIPE)
- /* The parent closes the process group synchronization pipe. */
- sh_closepipe (pgrp_pipe);
-#endif
-
- cleanup_dead_jobs ();
-
- if (js.j_jobslots == 0)
- {
- js.j_jobslots = JOB_SLOTS;
- jobs = (JOB **)xmalloc (js.j_jobslots * sizeof (JOB *));
-
- /* Now blank out these new entries. */
- for (i = 0; i < js.j_jobslots; i++)
- jobs[i] = (JOB *)NULL;
-
- js.j_firstj = js.j_lastj = js.j_njobs = 0;
- }
-
- /* Scan from the last slot backward, looking for the next free one. */
- /* XXX - revisit this interactive assumption */
- /* XXX - this way for now */
- if (interactive)
- {
- for (i = js.j_jobslots; i; i--)
- if (jobs[i - 1])
- break;
- }
- else
- {
-#if 0
- /* This wraps around, but makes it inconvenient to extend the array */
- for (i = js.j_lastj+1; i != js.j_lastj; i++)
- {
- if (i >= js.j_jobslots)
- i = 0;
- if (jobs[i] == 0)
- break;
- }
- if (i == js.j_lastj)
- i = js.j_jobslots;
-#else
- /* This doesn't wrap around yet. */
- for (i = js.j_lastj ? js.j_lastj + 1 : js.j_lastj; i < js.j_jobslots; i++)
- if (jobs[i] == 0)
- break;
-#endif
- }
-
- /* Do we need more room? */
-
- /* First try compaction */
- if ((interactive_shell == 0 || subshell_environment) && i == js.j_jobslots && js.j_jobslots >= MAX_JOBS_IN_ARRAY)
- i = compact_jobs_list (0);
-
- /* If we can't compact, reallocate */
- if (i == js.j_jobslots)
- {
- js.j_jobslots += JOB_SLOTS;
- jobs = (JOB **)xrealloc (jobs, (js.j_jobslots * sizeof (JOB *)));
-
- for (j = i; j < js.j_jobslots; j++)
- jobs[j] = (JOB *)NULL;
- }
-
- /* Add the current pipeline to the job list. */
- if (the_pipeline)
- {
- register PROCESS *p;
- int any_running, any_stopped, n;
-
- newjob = (JOB *)xmalloc (sizeof (JOB));
-
- for (n = 1, p = the_pipeline; p->next != the_pipeline; n++, p = p->next)
- ;
- p->next = (PROCESS *)NULL;
- newjob->pipe = REVERSE_LIST (the_pipeline, PROCESS *);
- for (p = newjob->pipe; p->next; p = p->next)
- ;
- p->next = newjob->pipe;
-
- the_pipeline = (PROCESS *)NULL;
- newjob->pgrp = pipeline_pgrp;
- pipeline_pgrp = 0;
-
- newjob->flags = 0;
-
- /* Flag to see if in another pgrp. */
- if (job_control)
- newjob->flags |= J_JOBCONTROL;
-
- /* Set the state of this pipeline. */
- p = newjob->pipe;
- any_running = any_stopped = 0;
- do
- {
- any_running |= PRUNNING (p);
- any_stopped |= PSTOPPED (p);
- p = p->next;
- }
- while (p != newjob->pipe);
-
- newjob->state = any_running ? JRUNNING : (any_stopped ? JSTOPPED : JDEAD);
- newjob->wd = job_working_directory ();
- newjob->deferred = deferred;
-
- newjob->j_cleanup = (sh_vptrfunc_t *)NULL;
- newjob->cleanarg = (PTR_T) NULL;
-
- jobs[i] = newjob;
- if (newjob->state == JDEAD && (newjob->flags & J_FOREGROUND))
- setjstatus (i);
- if (newjob->state == JDEAD)
- {
- js.c_reaped += n; /* wouldn't have been done since this was not part of a job */
- js.j_ndead++;
- }
- js.c_injobs += n;
-
- js.j_lastj = i;
- js.j_njobs++;
- }
- else
- newjob = (JOB *)NULL;
-
- if (newjob)
- js.j_lastmade = newjob;
-
- if (async)
- {
- if (newjob)
- {
- newjob->flags &= ~J_FOREGROUND;
- newjob->flags |= J_ASYNC;
- js.j_lastasync = newjob;
- }
- reset_current ();
- }
- else
- {
- if (newjob)
- {
- newjob->flags |= J_FOREGROUND;
- /*
- * !!!!! NOTE !!!!! (chet@ins.cwru.edu)
- *
- * The currently-accepted job control wisdom says to set the
- * terminal's process group n+1 times in an n-step pipeline:
- * once in the parent and once in each child. This is where
- * the parent gives it away.
- *
- * Don't give the terminal away if this shell is an asynchronous
- * subshell or if we're a (presumably non-interactive) shell running
- * in the background.
- *
- */
- if (job_control && newjob->pgrp && (subshell_environment&SUBSHELL_ASYNC) == 0 && running_in_background == 0)
- maybe_give_terminal_to (shell_pgrp, newjob->pgrp, 0);
- }
- }
-
- stop_making_children ();
- UNBLOCK_CHILD (oset);
- return (newjob ? i : js.j_current);
-}
-
-/* Functions to manage the list of exited background pids whose status has
- been saved. */
-
-static struct pidstat *
-bgp_alloc (pid, status)
- pid_t pid;
- int status;
-{
- struct pidstat *ps;
-
- ps = (struct pidstat *)xmalloc (sizeof (struct pidstat));
- ps->pid = pid;
- ps->status = status;
- ps->next = (struct pidstat *)0;
- return ps;
-}
-
-static struct pidstat *
-bgp_add (pid, status)
- pid_t pid;
- int status;
-{
- struct pidstat *ps;
-
- ps = bgp_alloc (pid, status);
-
- if (bgpids.list == 0)
- {
- bgpids.list = bgpids.end = ps;
- bgpids.npid = 0; /* just to make sure */
- }
- else
- {
- bgpids.end->next = ps;
- bgpids.end = ps;
- }
- bgpids.npid++;
-
- if (bgpids.npid > js.c_childmax)
- bgp_prune ();
-
- return ps;
-}
-
-static int
-bgp_delete (pid)
- pid_t pid;
-{
- struct pidstat *prev, *p;
-
- for (prev = p = bgpids.list; p; prev = p, p = p->next)
- if (p->pid == pid)
- {
- prev->next = p->next; /* remove from list */
- break;
- }
-
- if (p == 0)
- return 0; /* not found */
-
-#if defined (DEBUG)
- itrace("bgp_delete: deleting %d", pid);
-#endif
-
- /* Housekeeping in the border cases. */
- if (p == bgpids.list)
- bgpids.list = bgpids.list->next;
- else if (p == bgpids.end)
- bgpids.end = prev;
-
- bgpids.npid--;
- if (bgpids.npid == 0)
- bgpids.list = bgpids.end = 0;
- else if (bgpids.npid == 1)
- bgpids.end = bgpids.list; /* just to make sure */
-
- free (p);
- return 1;
-}
-
-/* Clear out the list of saved statuses */
-static void
-bgp_clear ()
-{
- struct pidstat *ps, *p;
-
- for (ps = bgpids.list; ps; )
- {
- p = ps;
- ps = ps->next;
- free (p);
- }
- bgpids.list = bgpids.end = 0;
- bgpids.npid = 0;
-}
-
-/* Search for PID in the list of saved background pids; return its status if
- found. If not found, return -1. */
-static int
-bgp_search (pid)
- pid_t pid;
-{
- struct pidstat *ps;
-
- for (ps = bgpids.list ; ps; ps = ps->next)
- if (ps->pid == pid)
- return ps->status;
- return -1;
-}
-
-static void
-bgp_prune ()
-{
- struct pidstat *ps;
-
- if (bgpids.npid == 0 || bgpids.list == 0)
- return; /* just paranoia */
-
- while (bgpids.npid > js.c_childmax)
- {
- ps = bgpids.list;
- bgpids.list = bgpids.list->next;
- free (ps);
- bgpids.npid--;
- }
-}
-
-/* Reset the values of js.j_lastj and js.j_firstj after one or both have
- been deleted. The caller should check whether js.j_njobs is 0 before
- calling this. This wraps around, but the rest of the code does not. At
- this point, it should not matter. */
-static void
-reset_job_indices ()
-{
- int old;
-
- if (jobs[js.j_firstj] == 0)
- {
- old = js.j_firstj++;
- if (old >= js.j_jobslots)
- old = js.j_jobslots - 1;
- while (js.j_firstj != old)
- {
- if (js.j_firstj >= js.j_jobslots)
- js.j_firstj = 0;
- if (jobs[js.j_firstj] || js.j_firstj == old) /* needed if old == 0 */
- break;
- js.j_firstj++;
- }
- if (js.j_firstj == old)
- js.j_firstj = js.j_lastj = js.j_njobs = 0;
- }
- if (jobs[js.j_lastj] == 0)
- {
- old = js.j_lastj--;
- if (old < 0)
- old = 0;
- while (js.j_lastj != old)
- {
- if (js.j_lastj < 0)
- js.j_lastj = js.j_jobslots - 1;
- if (jobs[js.j_lastj] || js.j_lastj == old) /* needed if old == js.j_jobslots */
- break;
- js.j_lastj--;
- }
- if (js.j_lastj == old)
- js.j_firstj = js.j_lastj = js.j_njobs = 0;
- }
-}
-
-/* Delete all DEAD jobs that the user had received notification about. */
-static void
-cleanup_dead_jobs ()
-{
- register int i;
- int os;
-
- if (js.j_jobslots == 0 || jobs_list_frozen)
- return;
-
- QUEUE_SIGCHLD(os);
-
- /* XXX could use js.j_firstj and js.j_lastj here */
- for (i = 0; i < js.j_jobslots; i++)
- {
-#if defined (DEBUG)
- if (i < js.j_firstj && jobs[i])
- itrace("cleanup_dead_jobs: job %d non-null before js.j_firstj (%d)", i, js.j_firstj);
- if (i > js.j_lastj && jobs[i])
- itrace("cleanup_dead_jobs: job %d non-null after js.j_lastj (%d)", i, js.j_lastj);
-#endif
-
- if (jobs[i] && DEADJOB (i) && IS_NOTIFIED (i))
- delete_job (i, 0);
- }
-
-#if defined (COPROCESS_SUPPORT)
- coproc_reap ();
-#endif
-
- UNQUEUE_SIGCHLD(os);
-}
-
-static int
-processes_in_job (job)
- int job;
-{
- int nproc;
- register PROCESS *p;
-
- nproc = 0;
- p = jobs[job]->pipe;
- do
- {
- p = p->next;
- nproc++;
- }
- while (p != jobs[job]->pipe);
-
- return nproc;
-}
-
-static void
-delete_old_job (pid)
- pid_t pid;
-{
- PROCESS *p;
- int job;
-
- job = find_job (pid, 0, &p);
- if (job != NO_JOB)
- {
-#ifdef DEBUG
- itrace ("delete_old_job: found pid %d in job %d with state %d", pid, job, jobs[job]->state);
-#endif
- if (JOBSTATE (job) == JDEAD)
- delete_job (job, DEL_NOBGPID);
- else
- {
-#ifdef DEBUG
- internal_warning (_("forked pid %d appears in running job %d"), pid, job+1);
-#endif
- if (p)
- p->pid = 0;
- }
- }
-}
-
-/* Reallocate and compress the jobs list. This returns with a jobs array
- whose size is a multiple of JOB_SLOTS and can hold the current number of
- jobs. Heuristics are used to minimize the number of new reallocs. */
-static void
-realloc_jobs_list ()
-{
- sigset_t set, oset;
- int nsize, i, j, ncur, nprev;
- JOB **nlist;
-
- ncur = nprev = NO_JOB;
- nsize = ((js.j_njobs + JOB_SLOTS - 1) / JOB_SLOTS);
- nsize *= JOB_SLOTS;
- i = js.j_njobs % JOB_SLOTS;
- if (i == 0 || i > (JOB_SLOTS >> 1))
- nsize += JOB_SLOTS;
-
- BLOCK_CHILD (set, oset);
- nlist = (js.j_jobslots == nsize) ? jobs : (JOB **) xmalloc (nsize * sizeof (JOB *));
-
- js.c_reaped = js.j_ndead = 0;
- for (i = j = 0; i < js.j_jobslots; i++)
- if (jobs[i])
- {
- if (i == js.j_current)
- ncur = j;
- if (i == js.j_previous)
- nprev = j;
- nlist[j++] = jobs[i];
- if (jobs[i]->state == JDEAD)
- {
- js.j_ndead++;
- js.c_reaped += processes_in_job (i);
- }
- }
-
-#if 0
- itrace ("realloc_jobs_list: resize jobs list from %d to %d", js.j_jobslots, nsize);
- itrace ("realloc_jobs_list: j_lastj changed from %d to %d", js.j_lastj, (j > 0) ? j - 1 : 0);
- itrace ("realloc_jobs_list: j_njobs changed from %d to %d", js.j_njobs, j);
- itrace ("realloc_jobs_list: js.j_ndead %d js.c_reaped %d", js.j_ndead, js.c_reaped);
-#endif
-
- js.j_firstj = 0;
- js.j_lastj = (j > 0) ? j - 1 : 0;
- js.j_njobs = j;
- js.j_jobslots = nsize;
-
- /* Zero out remaining slots in new jobs list */
- for ( ; j < nsize; j++)
- nlist[j] = (JOB *)NULL;
-
- if (jobs != nlist)
- {
- free (jobs);
- jobs = nlist;
- }
-
- if (ncur != NO_JOB)
- js.j_current = ncur;
- if (nprev != NO_JOB)
- js.j_previous = nprev;
-
- /* Need to reset these */
- if (js.j_current == NO_JOB || js.j_previous == NO_JOB || js.j_current > js.j_lastj || js.j_previous > js.j_lastj)
- reset_current ();
-
-#if 0
- itrace ("realloc_jobs_list: reset js.j_current (%d) and js.j_previous (%d)", js.j_current, js.j_previous);
-#endif
-
- UNBLOCK_CHILD (oset);
-}
-
-/* Compact the jobs list by removing dead jobs. Assume that we have filled
- the jobs array to some predefined maximum. Called when the shell is not
- the foreground process (subshell_environment != 0). Returns the first
- available slot in the compacted list. If that value is js.j_jobslots, then
- the list needs to be reallocated. The jobs array may be in new memory if
- this returns > 0 and < js.j_jobslots. FLAGS is reserved for future use. */
-static int
-compact_jobs_list (flags)
- int flags;
-{
- if (js.j_jobslots == 0 || jobs_list_frozen)
- return js.j_jobslots;
-
- reap_dead_jobs ();
- realloc_jobs_list ();
-
-#if 0
- itrace("compact_jobs_list: returning %d", (js.j_lastj || jobs[js.j_lastj]) ? js.j_lastj + 1 : 0);
-#endif
-
- return ((js.j_lastj || jobs[js.j_lastj]) ? js.j_lastj + 1 : 0);
-}
-
-/* Delete the job at INDEX from the job list. Must be called
- with SIGCHLD blocked. */
-void
-delete_job (job_index, dflags)
- int job_index, dflags;
-{
- register JOB *temp;
- PROCESS *proc;
- int ndel;
-
- if (js.j_jobslots == 0 || jobs_list_frozen)
- return;
-
- if ((dflags & DEL_WARNSTOPPED) && subshell_environment == 0 && STOPPED (job_index))
- internal_warning (_("deleting stopped job %d with process group %ld"), job_index+1, (long)jobs[job_index]->pgrp);
- temp = jobs[job_index];
- if (temp == 0)
- return;
-
- if ((dflags & DEL_NOBGPID) == 0)
- {
- proc = find_last_proc (job_index, 0);
- /* Could do this just for J_ASYNC jobs, but we save all. */
- if (proc)
- bgp_add (proc->pid, process_exit_status (proc->status));
- }
-
- jobs[job_index] = (JOB *)NULL;
- if (temp == js.j_lastmade)
- js.j_lastmade = 0;
- else if (temp == js.j_lastasync)
- js.j_lastasync = 0;
-
- free (temp->wd);
- ndel = discard_pipeline (temp->pipe);
-
- js.c_injobs -= ndel;
- if (temp->state == JDEAD)
- {
- js.c_reaped -= ndel;
- js.j_ndead--;
- if (js.c_reaped < 0)
- {
-#ifdef DEBUG
- itrace("delete_job (%d pgrp %d): js.c_reaped (%d) < 0 ndel = %d js.j_ndead = %d", job_index, temp->pgrp, js.c_reaped, ndel, js.j_ndead);
-#endif
- js.c_reaped = 0;
- }
- }
-
- if (temp->deferred)
- dispose_command (temp->deferred);
-
- free (temp);
-
- js.j_njobs--;
- if (js.j_njobs == 0)
- js.j_firstj = js.j_lastj = 0;
- else if (jobs[js.j_firstj] == 0 || jobs[js.j_lastj] == 0)
- reset_job_indices ();
-
- if (job_index == js.j_current || job_index == js.j_previous)
- reset_current ();
-}
-
-/* Must be called with SIGCHLD blocked. */
-void
-nohup_job (job_index)
- int job_index;
-{
- register JOB *temp;
-
- if (js.j_jobslots == 0)
- return;
-
- if (temp = jobs[job_index])
- temp->flags |= J_NOHUP;
-}
-
-/* Get rid of the data structure associated with a process chain. */
-static int
-discard_pipeline (chain)
- register PROCESS *chain;
-{
- register PROCESS *this, *next;
- int n;
-
- this = chain;
- n = 0;
- do
- {
- next = this->next;
- FREE (this->command);
- free (this);
- n++;
- this = next;
- }
- while (this != chain);
-
- return n;
-}
-
-/* Add this process to the chain being built in the_pipeline.
- NAME is the command string that will be exec'ed later.
- PID is the process id of the child. */
-static void
-add_process (name, pid)
- char *name;
- pid_t pid;
-{
- PROCESS *t, *p;
-
-#if defined (RECYCLES_PIDS)
- int j;
- p = find_process (pid, 0, &j);
- if (p)
- {
-# ifdef DEBUG
- if (j == NO_JOB)
- internal_warning (_("add_process: process %5ld (%s) in the_pipeline"), (long)p->pid, p->command);
-# endif
- if (PALIVE (p))
- internal_warning (_("add_process: pid %5ld (%s) marked as still alive"), (long)p->pid, p->command);
- p->running = PS_RECYCLED; /* mark as recycled */
- }
-#endif
-
- t = (PROCESS *)xmalloc (sizeof (PROCESS));
- t->next = the_pipeline;
- t->pid = pid;
- WSTATUS (t->status) = 0;
- t->running = PS_RUNNING;
- t->command = name;
- the_pipeline = t;
-
- if (t->next == 0)
- t->next = t;
- else
- {
- p = t->next;
- while (p->next != t->next)
- p = p->next;
- p->next = t;
- }
-}
-
-/* Create a (dummy) PROCESS with NAME, PID, and STATUS, and make it the last
- process in jobs[JID]->pipe. Used by the lastpipe code. */
-void
-append_process (name, pid, status, jid)
- char *name;
- pid_t pid;
- int status;
- int jid;
-{
- PROCESS *t, *p;
-
- t = (PROCESS *)xmalloc (sizeof (PROCESS));
- t->next = (PROCESS *)NULL;
- t->pid = pid;
- /* set process exit status using offset discovered by configure */
- t->status = (status & 0xff) << WEXITSTATUS_OFFSET;
- t->running = PS_DONE;
- t->command = name;
-
- js.c_reaped++; /* XXX */
-
- for (p = jobs[jid]->pipe; p->next != jobs[jid]->pipe; p = p->next)
- ;
- p->next = t;
- t->next = jobs[jid]->pipe;
-}
-
-#if 0
-/* Take the last job and make it the first job. Must be called with
- SIGCHLD blocked. */
-int
-rotate_the_pipeline ()
-{
- PROCESS *p;
-
- if (the_pipeline->next == the_pipeline)
- return;
- for (p = the_pipeline; p->next != the_pipeline; p = p->next)
- ;
- the_pipeline = p;
-}
-
-/* Reverse the order of the processes in the_pipeline. Must be called with
- SIGCHLD blocked. */
-int
-reverse_the_pipeline ()
-{
- PROCESS *p, *n;
-
- if (the_pipeline->next == the_pipeline)
- return;
-
- for (p = the_pipeline; p->next != the_pipeline; p = p->next)
- ;
- p->next = (PROCESS *)NULL;
-
- n = REVERSE_LIST (the_pipeline, PROCESS *);
-
- the_pipeline = n;
- for (p = the_pipeline; p->next; p = p->next)
- ;
- p->next = the_pipeline;
-}
-#endif
-
-/* Map FUNC over the list of jobs. If FUNC returns non-zero,
- then it is time to stop mapping, and that is the return value
- for map_over_jobs. FUNC is called with a JOB, arg1, arg2,
- and INDEX. */
-static int
-map_over_jobs (func, arg1, arg2)
- sh_job_map_func_t *func;
- int arg1, arg2;
-{
- register int i;
- int result;
- sigset_t set, oset;
-
- if (js.j_jobslots == 0)
- return 0;
-
- BLOCK_CHILD (set, oset);
-
- /* XXX could use js.j_firstj here */
- for (i = result = 0; i < js.j_jobslots; i++)
- {
-#if defined (DEBUG)
- if (i < js.j_firstj && jobs[i])
- itrace("map_over_jobs: job %d non-null before js.j_firstj (%d)", i, js.j_firstj);
- if (i > js.j_lastj && jobs[i])
- itrace("map_over_jobs: job %d non-null after js.j_lastj (%d)", i, js.j_lastj);
-#endif
- if (jobs[i])
- {
- result = (*func)(jobs[i], arg1, arg2, i);
- if (result)
- break;
- }
- }
-
- UNBLOCK_CHILD (oset);
-
- return (result);
-}
-
-/* Cause all the jobs in the current pipeline to exit. */
-void
-terminate_current_pipeline ()
-{
- if (pipeline_pgrp && pipeline_pgrp != shell_pgrp)
- {
- killpg (pipeline_pgrp, SIGTERM);
- killpg (pipeline_pgrp, SIGCONT);
- }
-}
-
-/* Cause all stopped jobs to exit. */
-void
-terminate_stopped_jobs ()
-{
- register int i;
-
- /* XXX could use js.j_firstj here */
- for (i = 0; i < js.j_jobslots; i++)
- {
- if (jobs[i] && STOPPED (i))
- {
- killpg (jobs[i]->pgrp, SIGTERM);
- killpg (jobs[i]->pgrp, SIGCONT);
- }
- }
-}
-
-/* Cause all jobs, running or stopped, to receive a hangup signal. If
- a job is marked J_NOHUP, don't send the SIGHUP. */
-void
-hangup_all_jobs ()
-{
- register int i;
-
- /* XXX could use js.j_firstj here */
- for (i = 0; i < js.j_jobslots; i++)
- {
- if (jobs[i])
- {
- if (jobs[i]->flags & J_NOHUP)
- continue;
- killpg (jobs[i]->pgrp, SIGHUP);
- if (STOPPED (i))
- killpg (jobs[i]->pgrp, SIGCONT);
- }
- }
-}
-
-void
-kill_current_pipeline ()
-{
- stop_making_children ();
- start_pipeline ();
-}
-
-/* Return the pipeline that PID belongs to. Note that the pipeline
- doesn't have to belong to a job. Must be called with SIGCHLD blocked.
- If JOBP is non-null, return the index of the job containing PID. */
-static PROCESS *
-find_pipeline (pid, alive_only, jobp)
- pid_t pid;
- int alive_only;
- int *jobp; /* index into jobs list or NO_JOB */
-{
- int job;
- PROCESS *p;
-
- /* See if this process is in the pipeline that we are building. */
- if (jobp)
- *jobp = NO_JOB;
- if (the_pipeline)
- {
- p = the_pipeline;
- do
- {
- /* Return it if we found it. Don't ever return a recycled pid. */
- if (p->pid == pid && ((alive_only == 0 && PRECYCLED(p) == 0) || PALIVE(p)))
- return (p);
-
- p = p->next;
- }
- while (p != the_pipeline);
- }
-
- job = find_job (pid, alive_only, &p);
- if (jobp)
- *jobp = job;
- return (job == NO_JOB) ? (PROCESS *)NULL : jobs[job]->pipe;
-}
-
-/* Return the PROCESS * describing PID. If JOBP is non-null return the index
- into the jobs array of the job containing PID. Must be called with
- SIGCHLD blocked. */
-static PROCESS *
-find_process (pid, alive_only, jobp)
- pid_t pid;
- int alive_only;
- int *jobp; /* index into jobs list or NO_JOB */
-{
- PROCESS *p;
-
- p = find_pipeline (pid, alive_only, jobp);
- while (p && p->pid != pid)
- p = p->next;
- return p;
-}
-
-/* Return the job index that PID belongs to, or NO_JOB if it doesn't
- belong to any job. Must be called with SIGCHLD blocked. */
-static int
-find_job (pid, alive_only, procp)
- pid_t pid;
- int alive_only;
- PROCESS **procp;
-{
- register int i;
- PROCESS *p;
-
- /* XXX could use js.j_firstj here, and should check js.j_lastj */
- for (i = 0; i < js.j_jobslots; i++)
- {
-#if defined (DEBUG)
- if (i < js.j_firstj && jobs[i])
- itrace("find_job: job %d non-null before js.j_firstj (%d)", i, js.j_firstj);
- if (i > js.j_lastj && jobs[i])
- itrace("find_job: job %d non-null after js.j_lastj (%d)", i, js.j_lastj);
-#endif
- if (jobs[i])
- {
- p = jobs[i]->pipe;
-
- do
- {
- if (p->pid == pid && ((alive_only == 0 && PRECYCLED(p) == 0) || PALIVE(p)))
- {
- if (procp)
- *procp = p;
- return (i);
- }
-
- p = p->next;
- }
- while (p != jobs[i]->pipe);
- }
- }
-
- return (NO_JOB);
-}
-
-/* Find a job given a PID. If BLOCK is non-zero, block SIGCHLD as
- required by find_job. */
-int
-get_job_by_pid (pid, block)
- pid_t pid;
- int block;
-{
- int job;
- sigset_t set, oset;
-
- if (block)
- BLOCK_CHILD (set, oset);
-
- job = find_job (pid, 0, NULL);
-
- if (block)
- UNBLOCK_CHILD (oset);
-
- return job;
-}
-
-/* Print descriptive information about the job with leader pid PID. */
-void
-describe_pid (pid)
- pid_t pid;
-{
- int job;
- sigset_t set, oset;
-
- BLOCK_CHILD (set, oset);
-
- job = find_job (pid, 0, NULL);
-
- if (job != NO_JOB)
- fprintf (stderr, "[%d] %ld\n", job + 1, (long)pid);
- else
- programming_error (_("describe_pid: %ld: no such pid"), (long)pid);
-
- UNBLOCK_CHILD (oset);
-}
-
-static char *
-j_strsignal (s)
- int s;
-{
- char *x;
-
- x = strsignal (s);
- if (x == 0)
- {
- x = retcode_name_buffer;
- sprintf (x, _("Signal %d"), s);
- }
- return x;
-}
-
-static char *
-printable_job_status (j, p, format)
- int j;
- PROCESS *p;
- int format;
-{
- static char *temp;
- int es;
-
- temp = _("Done");
-
- if (STOPPED (j) && format == 0)
- {
- if (posixly_correct == 0 || p == 0 || (WIFSTOPPED (p->status) == 0))
- temp = _("Stopped");
- else
- {
- temp = retcode_name_buffer;
- sprintf (temp, _("Stopped(%s)"), signal_name (WSTOPSIG (p->status)));
- }
- }
- else if (RUNNING (j))
- temp = _("Running");
- else
- {
- if (WIFSTOPPED (p->status))
- temp = j_strsignal (WSTOPSIG (p->status));
- else if (WIFSIGNALED (p->status))
- temp = j_strsignal (WTERMSIG (p->status));
- else if (WIFEXITED (p->status))
- {
- temp = retcode_name_buffer;
- es = WEXITSTATUS (p->status);
- if (es == 0)
- strcpy (temp, _("Done"));
- else if (posixly_correct)
- sprintf (temp, _("Done(%d)"), es);
- else
- sprintf (temp, _("Exit %d"), es);
- }
- else
- temp = _("Unknown status");
- }
-
- return temp;
-}
-
-/* This is the way to print out information on a job if you
- know the index. FORMAT is:
-
- JLIST_NORMAL) [1]+ Running emacs
- JLIST_LONG ) [1]+ 2378 Running emacs
- -1 ) [1]+ 2378 emacs
-
- JLIST_NORMAL) [1]+ Stopped ls | more
- JLIST_LONG ) [1]+ 2369 Stopped ls
- 2367 | more
- JLIST_PID_ONLY)
- Just list the pid of the process group leader (really
- the process group).
- JLIST_CHANGED_ONLY)
- Use format JLIST_NORMAL, but list only jobs about which
- the user has not been notified. */
-
-/* Print status for pipeline P. If JOB_INDEX is >= 0, it is the index into
- the JOBS array corresponding to this pipeline. FORMAT is as described
- above. Must be called with SIGCHLD blocked.
-
- If you're printing a pipeline that's not in the jobs array, like the
- current pipeline as it's being created, pass -1 for JOB_INDEX */
-static void
-print_pipeline (p, job_index, format, stream)
- PROCESS *p;
- int job_index, format;
- FILE *stream;
-{
- PROCESS *first, *last, *show;
- int es, name_padding;
- char *temp;
-
- if (p == 0)
- return;
-
- first = last = p;
- while (last->next != first)
- last = last->next;
-
- for (;;)
- {
- if (p != first)
- fprintf (stream, format ? " " : " |");
-
- if (format != JLIST_STANDARD)
- fprintf (stream, "%5ld", (long)p->pid);
-
- fprintf (stream, " ");
-
- if (format > -1 && job_index >= 0)
- {
- show = format ? p : last;
- temp = printable_job_status (job_index, show, format);
-
- if (p != first)
- {
- if (format)
- {
- if (show->running == first->running &&
- WSTATUS (show->status) == WSTATUS (first->status))
- temp = "";
- }
- else
- temp = (char *)NULL;
- }
-
- if (temp)
- {
- fprintf (stream, "%s", temp);
-
- es = STRLEN (temp);
- if (es == 0)
- es = 2; /* strlen ("| ") */
- name_padding = LONGEST_SIGNAL_DESC - es;
-
- fprintf (stream, "%*s", name_padding, "");
-
- if ((WIFSTOPPED (show->status) == 0) &&
- (WIFCONTINUED (show->status) == 0) &&
- WIFCORED (show->status))
- fprintf (stream, _("(core dumped) "));
- }
- }
-
- if (p != first && format)
- fprintf (stream, "| ");
-
- if (p->command)
- fprintf (stream, "%s", p->command);
-
- if (p == last && job_index >= 0)
- {
- temp = current_working_directory ();
-
- if (RUNNING (job_index) && (IS_FOREGROUND (job_index) == 0))
- fprintf (stream, " &");
-
- if (strcmp (temp, jobs[job_index]->wd) != 0)
- fprintf (stream,
- _(" (wd: %s)"), polite_directory_format (jobs[job_index]->wd));
- }
-
- if (format || (p == last))
- {
- /* We need to add a CR only if this is an interactive shell, and
- we're reporting the status of a completed job asynchronously.
- We can't really check whether this particular job is being
- reported asynchronously, so just add the CR if the shell is
- currently interactive and asynchronous notification is enabled. */
- if (asynchronous_notification && interactive)
- fprintf (stream, "\r\n");
- else
- fprintf (stream, "\n");
- }
-
- if (p == last)
- break;
- p = p->next;
- }
- fflush (stream);
-}
-
-/* Print information to STREAM about jobs[JOB_INDEX] according to FORMAT.
- Must be called with SIGCHLD blocked or queued with queue_sigchld */
-static void
-pretty_print_job (job_index, format, stream)
- int job_index, format;
- FILE *stream;
-{
- register PROCESS *p;
-
- /* Format only pid information about the process group leader? */
- if (format == JLIST_PID_ONLY)
- {
- fprintf (stream, "%ld\n", (long)jobs[job_index]->pipe->pid);
- return;
- }
-
- if (format == JLIST_CHANGED_ONLY)
- {
- if (IS_NOTIFIED (job_index))
- return;
- format = JLIST_STANDARD;
- }
-
- if (format != JLIST_NONINTERACTIVE)
- fprintf (stream, "[%d]%c ", job_index + 1,
- (job_index == js.j_current) ? '+':
- (job_index == js.j_previous) ? '-' : ' ');
-
- if (format == JLIST_NONINTERACTIVE)
- format = JLIST_LONG;
-
- p = jobs[job_index]->pipe;
-
- print_pipeline (p, job_index, format, stream);
-
- /* We have printed information about this job. When the job's
- status changes, waitchld () sets the notification flag to 0. */
- jobs[job_index]->flags |= J_NOTIFIED;
-}
-
-static int
-print_job (job, format, state, job_index)
- JOB *job;
- int format, state, job_index;
-{
- if (state == -1 || (JOB_STATE)state == job->state)
- pretty_print_job (job_index, format, stdout);
- return (0);
-}
-
-void
-list_one_job (job, format, ignore, job_index)
- JOB *job;
- int format, ignore, job_index;
-{
- pretty_print_job (job_index, format, stdout);
-}
-
-void
-list_stopped_jobs (format)
- int format;
-{
- cleanup_dead_jobs ();
- map_over_jobs (print_job, format, (int)JSTOPPED);
-}
-
-void
-list_running_jobs (format)
- int format;
-{
- cleanup_dead_jobs ();
- map_over_jobs (print_job, format, (int)JRUNNING);
-}
-
-/* List jobs. If FORMAT is non-zero, then the long form of the information
- is printed, else just a short version. */
-void
-list_all_jobs (format)
- int format;
-{
- cleanup_dead_jobs ();
- map_over_jobs (print_job, format, -1);
-}
-
-/* Fork, handling errors. Returns the pid of the newly made child, or 0.
- COMMAND is just for remembering the name of the command; we don't do
- anything else with it. ASYNC_P says what to do with the tty. If
- non-zero, then don't give it away. */
-pid_t
-make_child (command, async_p)
- char *command;
- int async_p;
-{
- int forksleep;
- sigset_t set, oset;
- pid_t pid;
-
- /* XXX - block SIGTERM here and unblock in child after fork resets the
- set of pending signals? */
- sigemptyset (&set);
- sigaddset (&set, SIGCHLD);
- sigaddset (&set, SIGINT);
- sigemptyset (&oset);
- sigprocmask (SIG_BLOCK, &set, &oset);
-
- making_children ();
-
- forksleep = 1;
-
-#if defined (BUFFERED_INPUT)
- /* If default_buffered_input is active, we are reading a script. If
- the command is asynchronous, we have already duplicated /dev/null
- as fd 0, but have not changed the buffered stream corresponding to
- the old fd 0. We don't want to sync the stream in this case. */
- if (default_buffered_input != -1 &&
- (!async_p || default_buffered_input > 0))
- sync_buffered_stream (default_buffered_input);
-#endif /* BUFFERED_INPUT */
-
- RESET_SIGTERM;
-
- /* Create the child, handle severe errors. Retry on EAGAIN. */
- while ((pid = fork ()) < 0 && errno == EAGAIN && forksleep < FORKSLEEP_MAX)
- {
- /* bash-4.2 */
- sigprocmask (SIG_SETMASK, &oset, (sigset_t *)NULL);
- /* If we can't create any children, try to reap some dead ones. */
- waitchld (-1, 0);
-
- sys_error ("fork: retry");
- RESET_SIGTERM;
-
- if (sleep (forksleep) != 0)
- break;
- forksleep <<= 1;
-
- if (interrupt_state)
- break;
- sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL);
- }
-
- if (pid != 0)
- RESET_SIGTERM;
-
- if (pid < 0)
- {
- sys_error ("fork");
-
- /* Kill all of the processes in the current pipeline. */
- terminate_current_pipeline ();
-
- /* Discard the current pipeline, if any. */
- if (the_pipeline)
- kill_current_pipeline ();
-
- last_command_exit_value = EX_NOEXEC;
- throw_to_top_level (); /* Reset signals, etc. */
- }
-
- if (pid == 0)
- {
- /* In the child. Give this child the right process group, set the
- signals to the default state for a new process. */
- pid_t mypid;
-
- mypid = getpid ();
-#if defined (BUFFERED_INPUT)
- /* Close default_buffered_input if it's > 0. We don't close it if it's
- 0 because that's the file descriptor used when redirecting input,
- and it's wrong to close the file in that case. */
- unset_bash_input (0);
-#endif /* BUFFERED_INPUT */
-
- /* Restore top-level signal mask. */
- sigprocmask (SIG_SETMASK, &top_level_mask, (sigset_t *)NULL);
-
- if (job_control)
- {
- /* All processes in this pipeline belong in the same
- process group. */
-
- if (pipeline_pgrp == 0) /* This is the first child. */
- pipeline_pgrp = mypid;
-
- /* Check for running command in backquotes. */
- if (pipeline_pgrp == shell_pgrp)
- ignore_tty_job_signals ();
- else
- default_tty_job_signals ();
-
- /* Set the process group before trying to mess with the terminal's
- process group. This is mandated by POSIX. */
- /* This is in accordance with the Posix 1003.1 standard,
- section B.7.2.4, which says that trying to set the terminal
- process group with tcsetpgrp() to an unused pgrp value (like
- this would have for the first child) is an error. Section
- B.4.3.3, p. 237 also covers this, in the context of job control
- shells. */
- if (setpgid (mypid, pipeline_pgrp) < 0)
- sys_error (_("child setpgid (%ld to %ld)"), (long)mypid, (long)pipeline_pgrp);
-
- /* By convention (and assumption above), if
- pipeline_pgrp == shell_pgrp, we are making a child for
- command substitution.
- In this case, we don't want to give the terminal to the
- shell's process group (we could be in the middle of a
- pipeline, for example). */
- if (async_p == 0 && pipeline_pgrp != shell_pgrp && ((subshell_environment&SUBSHELL_ASYNC) == 0) && running_in_background == 0)
- give_terminal_to (pipeline_pgrp, 0);
-
-#if defined (PGRP_PIPE)
- if (pipeline_pgrp == mypid)
- pipe_read (pgrp_pipe);
-#endif
- }
- else /* Without job control... */
- {
- if (pipeline_pgrp == 0)
- pipeline_pgrp = shell_pgrp;
-
- /* If these signals are set to SIG_DFL, we encounter the curious
- situation of an interactive ^Z to a running process *working*
- and stopping the process, but being unable to do anything with
- that process to change its state. On the other hand, if they
- are set to SIG_IGN, jobs started from scripts do not stop when
- the shell running the script gets a SIGTSTP and stops. */
-
- default_tty_job_signals ();
- }
-
-#if defined (PGRP_PIPE)
- /* Release the process group pipe, since our call to setpgid ()
- is done. The last call to sh_closepipe is done in stop_pipeline. */
- sh_closepipe (pgrp_pipe);
-#endif /* PGRP_PIPE */
-
-#if 0
- /* Don't set last_asynchronous_pid in the child */
- if (async_p)
- last_asynchronous_pid = mypid; /* XXX */
- else
-#endif
-#if defined (RECYCLES_PIDS)
- if (last_asynchronous_pid == mypid)
- /* Avoid pid aliasing. 1 seems like a safe, unusual pid value. */
- last_asynchronous_pid = 1;
-#endif
- }
- else
- {
- /* In the parent. Remember the pid of the child just created
- as the proper pgrp if this is the first child. */
-
- if (job_control)
- {
- if (pipeline_pgrp == 0)
- {
- pipeline_pgrp = pid;
- /* Don't twiddle terminal pgrps in the parent! This is the bug,
- not the good thing of twiddling them in the child! */
- /* give_terminal_to (pipeline_pgrp, 0); */
- }
- /* This is done on the recommendation of the Rationale section of
- the POSIX 1003.1 standard, where it discusses job control and
- shells. It is done to avoid possible race conditions. (Ref.
- 1003.1 Rationale, section B.4.3.3, page 236). */
- setpgid (pid, pipeline_pgrp);
- }
- else
- {
- if (pipeline_pgrp == 0)
- pipeline_pgrp = shell_pgrp;
- }
-
- /* Place all processes into the jobs array regardless of the
- state of job_control. */
- add_process (command, pid);
-
- if (async_p)
- last_asynchronous_pid = pid;
-#if defined (RECYCLES_PIDS)
- else if (last_asynchronous_pid == pid)
- /* Avoid pid aliasing. 1 seems like a safe, unusual pid value. */
- last_asynchronous_pid = 1;
-#endif
-
- /* Delete the saved status for any job containing this PID in case it's
- been reused. */
- delete_old_job (pid);
-
- /* Perform the check for pid reuse unconditionally. Some systems reuse
- PIDs before giving a process CHILD_MAX/_SC_CHILD_MAX unique ones. */
- bgp_delete (pid); /* new process, discard any saved status */
-
- last_made_pid = pid;
-
- /* keep stats */
- js.c_totforked++;
- js.c_living++;
-
- /* Unblock SIGINT and SIGCHLD unless creating a pipeline, in which case
- SIGCHLD remains blocked until all commands in the pipeline have been
- created. */
- sigprocmask (SIG_SETMASK, &oset, (sigset_t *)NULL);
- }
-
- return (pid);
-}
-
-/* These two functions are called only in child processes. */
-void
-ignore_tty_job_signals ()
-{
- set_signal_handler (SIGTSTP, SIG_IGN);
- set_signal_handler (SIGTTIN, SIG_IGN);
- set_signal_handler (SIGTTOU, SIG_IGN);
-}
-
-/* Reset the tty-generated job control signals to SIG_DFL unless that signal
- was ignored at entry to the shell, in which case we need to set it to
- SIG_IGN in the child. We can't rely on resetting traps, since the hard
- ignored signals can't be trapped. */
-void
-default_tty_job_signals ()
-{
- if (signal_is_trapped (SIGTSTP) == 0 && signal_is_hard_ignored (SIGTSTP))
- set_signal_handler (SIGTSTP, SIG_IGN);
- else
- set_signal_handler (SIGTSTP, SIG_DFL);
-
- if (signal_is_trapped (SIGTTIN) == 0 && signal_is_hard_ignored (SIGTTIN))
- set_signal_handler (SIGTTIN, SIG_IGN);
- else
- set_signal_handler (SIGTTIN, SIG_DFL);
-
- if (signal_is_trapped (SIGTTOU) == 0 && signal_is_hard_ignored (SIGTTOU))
- set_signal_handler (SIGTTOU, SIG_IGN);
- else
- set_signal_handler (SIGTTOU, SIG_DFL);
-}
-
-/* Called once in a parent process. */
-void
-get_original_tty_job_signals ()
-{
- static int fetched = 0;
-
- if (fetched == 0)
- {
- get_original_signal (SIGTSTP);
- get_original_signal (SIGTTIN);
- get_original_signal (SIGTTOU);
- fetched = 1;
- }
-}
-
-/* When we end a job abnormally, or if we stop a job, we set the tty to the
- state kept in here. When a job ends normally, we set the state in here
- to the state of the tty. */
-
-static TTYSTRUCT shell_tty_info;
-
-#if defined (NEW_TTY_DRIVER)
-static struct tchars shell_tchars;
-static struct ltchars shell_ltchars;
-#endif /* NEW_TTY_DRIVER */
-
-#if defined (NEW_TTY_DRIVER) && defined (DRAIN_OUTPUT)
-/* Since the BSD tty driver does not allow us to change the tty modes
- while simultaneously waiting for output to drain and preserving
- typeahead, we have to drain the output ourselves before calling
- ioctl. We cheat by finding the length of the output queue, and
- using select to wait for an appropriate length of time. This is
- a hack, and should be labeled as such (it's a hastily-adapted
- mutation of a `usleep' implementation). It's only reason for
- existing is the flaw in the BSD tty driver. */
-
-static int ttspeeds[] =
-{
- 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
- 1800, 2400, 4800, 9600, 19200, 38400
-};
-
-static void
-draino (fd, ospeed)
- int fd, ospeed;
-{
- register int delay = ttspeeds[ospeed];
- int n;
-
- if (!delay)
- return;
-
- while ((ioctl (fd, TIOCOUTQ, &n) == 0) && n)
- {
- if (n > (delay / 100))
- {
- struct timeval tv;
-
- n *= 10; /* 2 bits more for conservativeness. */
- tv.tv_sec = n / delay;
- tv.tv_usec = ((n % delay) * 1000000) / delay;
- select (fd, (fd_set *)0, (fd_set *)0, (fd_set *)0, &tv);
- }
- else
- break;
- }
-}
-#endif /* NEW_TTY_DRIVER && DRAIN_OUTPUT */
-
-/* Return the fd from which we are actually getting input. */
-#define input_tty() (shell_tty != -1) ? shell_tty : fileno (stderr)
-
-/* Fill the contents of shell_tty_info with the current tty info. */
-int
-get_tty_state ()
-{
- int tty;
-
- tty = input_tty ();
- if (tty != -1)
- {
-#if defined (NEW_TTY_DRIVER)
- ioctl (tty, TIOCGETP, &shell_tty_info);
- ioctl (tty, TIOCGETC, &shell_tchars);
- ioctl (tty, TIOCGLTC, &shell_ltchars);
-#endif /* NEW_TTY_DRIVER */
-
-#if defined (TERMIO_TTY_DRIVER)
- ioctl (tty, TCGETA, &shell_tty_info);
-#endif /* TERMIO_TTY_DRIVER */
-
-#if defined (TERMIOS_TTY_DRIVER)
- if (tcgetattr (tty, &shell_tty_info) < 0)
- {
-#if 0
- /* Only print an error message if we're really interactive at
- this time. */
- if (interactive)
- sys_error ("[%ld: %d (%d)] tcgetattr", (long)getpid (), shell_level, tty);
-#endif
- return -1;
- }
-#endif /* TERMIOS_TTY_DRIVER */
- if (check_window_size)
- get_new_window_size (0, (int *)0, (int *)0);
- }
- return 0;
-}
-
-/* Make the current tty use the state in shell_tty_info. */
-int
-set_tty_state ()
-{
- int tty;
-
- tty = input_tty ();
- if (tty != -1)
- {
-#if defined (NEW_TTY_DRIVER)
-# if defined (DRAIN_OUTPUT)
- draino (tty, shell_tty_info.sg_ospeed);
-# endif /* DRAIN_OUTPUT */
- ioctl (tty, TIOCSETN, &shell_tty_info);
- ioctl (tty, TIOCSETC, &shell_tchars);
- ioctl (tty, TIOCSLTC, &shell_ltchars);
-#endif /* NEW_TTY_DRIVER */
-
-#if defined (TERMIO_TTY_DRIVER)
- ioctl (tty, TCSETAW, &shell_tty_info);
-#endif /* TERMIO_TTY_DRIVER */
-
-#if defined (TERMIOS_TTY_DRIVER)
- if (tcsetattr (tty, TCSADRAIN, &shell_tty_info) < 0)
- {
- /* Only print an error message if we're really interactive at
- this time. */
- if (interactive)
- sys_error ("[%ld: %d (%d)] tcsetattr", (long)getpid (), shell_level, tty);
- return -1;
- }
-#endif /* TERMIOS_TTY_DRIVER */
- }
- return 0;
-}
-
-/* Given an index into the jobs array JOB, return the PROCESS struct of the last
- process in that job's pipeline. This is the one whose exit status
- counts. Must be called with SIGCHLD blocked or queued. */
-static PROCESS *
-find_last_proc (job, block)
- int job;
- int block;
-{
- register PROCESS *p;
- sigset_t set, oset;
-
- if (block)
- BLOCK_CHILD (set, oset);
-
- p = jobs[job]->pipe;
- while (p && p->next != jobs[job]->pipe)
- p = p->next;
-
- if (block)
- UNBLOCK_CHILD (oset);
-
- return (p);
-}
-
-static pid_t
-find_last_pid (job, block)
- int job;
- int block;
-{
- PROCESS *p;
-
- p = find_last_proc (job, block);
- /* Possible race condition here. */
- return p->pid;
-}
-
-/* Wait for a particular child of the shell to finish executing.
- This low-level function prints an error message if PID is not
- a child of this shell. It returns -1 if it fails, or whatever
- wait_for returns otherwise. If the child is not found in the
- jobs table, it returns 127. */
-int
-wait_for_single_pid (pid)
- pid_t pid;
-{
- register PROCESS *child;
- sigset_t set, oset;
- int r, job;
-
- BLOCK_CHILD (set, oset);
- child = find_pipeline (pid, 0, (int *)NULL);
- UNBLOCK_CHILD (oset);
-
- if (child == 0)
- {
- r = bgp_search (pid);
- if (r >= 0)
- return r;
- }
-
- if (child == 0)
- {
- internal_error (_("wait: pid %ld is not a child of this shell"), (long)pid);
- return (127);
- }
-
- r = wait_for (pid);
-
- /* POSIX.2: if we just waited for a job, we can remove it from the jobs
- table. */
- BLOCK_CHILD (set, oset);
- job = find_job (pid, 0, NULL);
- if (job != NO_JOB && jobs[job] && DEADJOB (job))
- jobs[job]->flags |= J_NOTIFIED;
- UNBLOCK_CHILD (oset);
-
- /* If running in posix mode, remove the job from the jobs table immediately */
- if (posixly_correct)
- {
- cleanup_dead_jobs ();
- bgp_delete (pid);
- }
-
- return r;
-}
-
-/* Wait for all of the background processes started by this shell to finish. */
-void
-wait_for_background_pids ()
-{
- register int i, r, waited_for;
- sigset_t set, oset;
- pid_t pid;
-
- for (waited_for = 0;;)
- {
- BLOCK_CHILD (set, oset);
-
- /* find first running job; if none running in foreground, break */
- /* XXX could use js.j_firstj and js.j_lastj here */
- for (i = 0; i < js.j_jobslots; i++)
- {
-#if defined (DEBUG)
- if (i < js.j_firstj && jobs[i])
- itrace("wait_for_background_pids: job %d non-null before js.j_firstj (%d)", i, js.j_firstj);
- if (i > js.j_lastj && jobs[i])
- itrace("wait_for_background_pids: job %d non-null after js.j_lastj (%d)", i, js.j_lastj);
-#endif
- if (jobs[i] && RUNNING (i) && IS_FOREGROUND (i) == 0)
- break;
- }
- if (i == js.j_jobslots)
- {
- UNBLOCK_CHILD (oset);
- break;
- }
-
- /* now wait for the last pid in that job. */
- pid = find_last_pid (i, 0);
- UNBLOCK_CHILD (oset);
- QUIT;
- errno = 0; /* XXX */
- r = wait_for_single_pid (pid);
- if (r == -1)
- {
- /* If we're mistaken about job state, compensate. */
- if (errno == ECHILD)
- mark_all_jobs_as_dead ();
- }
- else
- waited_for++;
- }
-
- /* POSIX.2 says the shell can discard the statuses of all completed jobs if
- `wait' is called with no arguments. */
- mark_dead_jobs_as_notified (1);
- cleanup_dead_jobs ();
- bgp_clear ();
-}
-
-/* Make OLD_SIGINT_HANDLER the SIGINT signal handler. */
-#define INVALID_SIGNAL_HANDLER (SigHandler *)wait_for_background_pids
-static SigHandler *old_sigint_handler = INVALID_SIGNAL_HANDLER;
-
-static int wait_sigint_received;
-static int child_caught_sigint;
-static int waiting_for_child;
-
-static void
-restore_sigint_handler ()
-{
- if (old_sigint_handler != INVALID_SIGNAL_HANDLER)
- {
- set_signal_handler (SIGINT, old_sigint_handler);
- old_sigint_handler = INVALID_SIGNAL_HANDLER;
- waiting_for_child = 0;
- }
-}
-
-/* Handle SIGINT while we are waiting for children in a script to exit.
- The `wait' builtin should be interruptible, but all others should be
- effectively ignored (i.e. not cause the shell to exit). */
-static sighandler
-wait_sigint_handler (sig)
- int sig;
-{
- SigHandler *sigint_handler;
-
- if (interrupt_immediately ||
- (this_shell_builtin && this_shell_builtin == wait_builtin))
- {
- last_command_exit_value = 128+SIGINT;
- restore_sigint_handler ();
- /* If we got a SIGINT while in `wait', and SIGINT is trapped, do
- what POSIX.2 says (see builtins/wait.def for more info). */
- if (this_shell_builtin && this_shell_builtin == wait_builtin &&
- signal_is_trapped (SIGINT) &&
- ((sigint_handler = trap_to_sighandler (SIGINT)) == trap_handler))
- {
- trap_handler (SIGINT); /* set pending_traps[SIGINT] */
- wait_signal_received = SIGINT;
- if (interrupt_immediately)
- {
- interrupt_immediately = 0;
- longjmp (wait_intr_buf, 1);
- }
- else
- /* Let CHECK_WAIT_INTR handle it in wait_for/waitchld */
- SIGRETURN (0);
- }
- else if (interrupt_immediately)
- {
- ADDINTERRUPT;
- QUIT;
- }
- else /* wait_builtin but signal not trapped, treat as interrupt */
- kill (getpid (), SIGINT);
- }
-
- /* XXX - should this be interrupt_state? If it is, the shell will act
- as if it got the SIGINT interrupt. */
- if (waiting_for_child)
- wait_sigint_received = 1;
- else
- {
- last_command_exit_value = 128+SIGINT;
- restore_sigint_handler ();
- kill (getpid (), SIGINT);
- }
-
- /* Otherwise effectively ignore the SIGINT and allow the running job to
- be killed. */
- SIGRETURN (0);
-}
-
-static int
-process_exit_signal (status)
- WAIT status;
-{
- return (WIFSIGNALED (status) ? WTERMSIG (status) : 0);
-}
-
-static int
-process_exit_status (status)
- WAIT status;
-{
- if (WIFSIGNALED (status))
- return (128 + WTERMSIG (status));
- else if (WIFSTOPPED (status) == 0)
- return (WEXITSTATUS (status));
- else
- return (EXECUTION_SUCCESS);
-}
-
-static WAIT
-job_signal_status (job)
- int job;
-{
- register PROCESS *p;
- WAIT s;
-
- p = jobs[job]->pipe;
- do
- {
- s = p->status;
- if (WIFSIGNALED(s) || WIFSTOPPED(s))
- break;
- p = p->next;
- }
- while (p != jobs[job]->pipe);
-
- return s;
-}
-
-/* Return the exit status of the last process in the pipeline for job JOB.
- This is the exit status of the entire job. */
-static WAIT
-raw_job_exit_status (job)
- int job;
-{
- register PROCESS *p;
- int fail;
- WAIT ret;
-
- if (pipefail_opt)
- {
- fail = 0;
- p = jobs[job]->pipe;
- do
- {
- if (WSTATUS (p->status) != EXECUTION_SUCCESS)
- fail = WSTATUS(p->status);
- p = p->next;
- }
- while (p != jobs[job]->pipe);
- WSTATUS (ret) = fail;
- return ret;
- }
-
- for (p = jobs[job]->pipe; p->next != jobs[job]->pipe; p = p->next)
- ;
- return (p->status);
-}
-
-/* Return the exit status of job JOB. This is the exit status of the last
- (rightmost) process in the job's pipeline, modified if the job was killed
- by a signal or stopped. */
-int
-job_exit_status (job)
- int job;
-{
- return (process_exit_status (raw_job_exit_status (job)));
-}
-
-int
-job_exit_signal (job)
- int job;
-{
- return (process_exit_signal (raw_job_exit_status (job)));
-}
-
-#define FIND_CHILD(pid, child) \
- do \
- { \
- child = find_pipeline (pid, 0, (int *)NULL); \
- if (child == 0) \
- { \
- give_terminal_to (shell_pgrp, 0); \
- UNBLOCK_CHILD (oset); \
- internal_error (_("wait_for: No record of process %ld"), (long)pid); \
- restore_sigint_handler (); \
- return (termination_state = 127); \
- } \
- } \
- while (0)
-
-/* Wait for pid (one of our children) to terminate, then
- return the termination state. Returns 127 if PID is not found in
- the jobs table. Returns -1 if waitchld() returns -1, indicating
- that there are no unwaited-for child processes. */
-int
-wait_for (pid)
- pid_t pid;
-{
- int job, termination_state, r;
- WAIT s;
- register PROCESS *child;
- sigset_t set, oset;
-
- /* In the case that this code is interrupted, and we longjmp () out of it,
- we are relying on the code in throw_to_top_level () to restore the
- top-level signal mask. */
- child = 0;
- BLOCK_CHILD (set, oset);
-
- /* Ignore interrupts while waiting for a job run without job control
- to finish. We don't want the shell to exit if an interrupt is
- received, only if one of the jobs run is killed via SIGINT. If
- job control is not set, the job will be run in the same pgrp as
- the shell, and the shell will see any signals the job gets. In
- fact, we want this set every time the waiting shell and the waited-
- for process are in the same process group, including command
- substitution. */
-
- /* This is possibly a race condition -- should it go in stop_pipeline? */
- wait_sigint_received = child_caught_sigint = 0;
- if (job_control == 0 || (subshell_environment&SUBSHELL_COMSUB))
- {
- old_sigint_handler = set_signal_handler (SIGINT, wait_sigint_handler);
- waiting_for_child = 0;
- if (old_sigint_handler == SIG_IGN)
- set_signal_handler (SIGINT, old_sigint_handler);
- }
-
- termination_state = last_command_exit_value;
-
- if (interactive && job_control == 0)
- QUIT;
- /* Check for terminating signals and exit the shell if we receive one */
- CHECK_TERMSIG;
-
- /* Check for a trapped signal interrupting the wait builtin and jump out */
- CHECK_WAIT_INTR;
-
- /* If we say wait_for (), then we have a record of this child somewhere.
- If it and none of its peers are running, don't call waitchld(). */
-
- job = NO_JOB;
- do
- {
- if (pid != ANY_PID)
- FIND_CHILD (pid, child);
-
- /* If this child is part of a job, then we are really waiting for the
- job to finish. Otherwise, we are waiting for the child to finish.
- We check for JDEAD in case the job state has been set by waitchld
- after receipt of a SIGCHLD. */
- if (job == NO_JOB) /* XXX -- && pid != ANY_PID ? */
- job = find_job (pid, 0, NULL);
-
- /* waitchld() takes care of setting the state of the job. If the job
- has already exited before this is called, sigchld_handler will have
- called waitchld and the state will be set to JDEAD. */
-
- if (pid == ANY_PID || PRUNNING(child) || (job != NO_JOB && RUNNING (job)))
- {
-#if defined (WAITPID_BROKEN) /* SCOv4 */
- sigset_t suspend_set;
- sigemptyset (&suspend_set);
- sigsuspend (&suspend_set);
-#else /* !WAITPID_BROKEN */
-# if defined (MUST_UNBLOCK_CHLD)
- struct sigaction act, oact;
- sigset_t nullset, chldset;
-
- sigemptyset (&nullset);
- sigemptyset (&chldset);
- sigprocmask (SIG_SETMASK, &nullset, &chldset);
- act.sa_handler = SIG_DFL;
- sigemptyset (&act.sa_mask);
- sigemptyset (&oact.sa_mask);
- act.sa_flags = 0;
-# if defined (SA_RESTART)
- act.sa_flags |= SA_RESTART;
-# endif
- sigaction (SIGCHLD, &act, &oact);
-# endif /* MUST_UNBLOCK_CHLD */
- queue_sigchld = 1;
- waiting_for_child++;
- r = waitchld (pid, 1); /* XXX */
- waiting_for_child--;
-#if 0
-itrace("wait_for: blocking wait for %d returns %d child = %p", (int)pid, r, child);
-#endif
-# if defined (MUST_UNBLOCK_CHLD)
- sigaction (SIGCHLD, &oact, (struct sigaction *)NULL);
- sigprocmask (SIG_SETMASK, &chldset, (sigset_t *)NULL);
-# endif
- queue_sigchld = 0;
- if (r == -1 && errno == ECHILD && this_shell_builtin == wait_builtin)
- {
- termination_state = -1;
- /* XXX - restore sigint handler here? */
- goto wait_for_return;
- }
-
- /* If child is marked as running, but waitpid() returns -1/ECHILD,
- there is something wrong. Somewhere, wait should have returned
- that child's pid. Mark the child as not running and the job,
- if it exists, as JDEAD. */
- if (r == -1 && errno == ECHILD)
- {
- if (child)
- {
- child->running = PS_DONE;
- WSTATUS (child->status) = 0; /* XXX -- can't find true status */
- }
- js.c_living = 0; /* no living child processes */
- if (job != NO_JOB)
- {
- jobs[job]->state = JDEAD;
- js.c_reaped++;
- js.j_ndead++;
- }
- if (pid == ANY_PID)
- {
- termination_state = -1;
- break;
- }
- }
-#endif /* WAITPID_BROKEN */
- }
-
- /* If the shell is interactive, and job control is disabled, see
- if the foreground process has died due to SIGINT and jump out
- of the wait loop if it has. waitchld has already restored the
- old SIGINT signal handler. */
- if (interactive && job_control == 0)
- QUIT;
- /* Check for terminating signals and exit the shell if we receive one */
- CHECK_TERMSIG;
-
- /* Check for a trapped signal interrupting the wait builtin and jump out */
- CHECK_WAIT_INTR;
-
- if (pid == ANY_PID)
- /* XXX - could set child but we don't have a handle on what waitchld
- reaps. Leave termination_state alone. */
- goto wait_for_return;
- }
- while (PRUNNING (child) || (job != NO_JOB && RUNNING (job)));
-
- /* Restore the original SIGINT signal handler before we return. */
- restore_sigint_handler ();
-
- /* The exit state of the command is either the termination state of the
- child, or the termination state of the job. If a job, the status
- of the last child in the pipeline is the significant one. If the command
- or job was terminated by a signal, note that value also. */
- termination_state = (job != NO_JOB) ? job_exit_status (job)
- : (child ? process_exit_status (child->status) : EXECUTION_SUCCESS);
- last_command_exit_signal = (job != NO_JOB) ? job_exit_signal (job)
- : (child ? process_exit_signal (child->status) : 0);
-
- /* XXX */
- if ((job != NO_JOB && JOBSTATE (job) == JSTOPPED) || (child && WIFSTOPPED (child->status)))
- termination_state = 128 + WSTOPSIG (child->status);
-
- if (job == NO_JOB || IS_JOBCONTROL (job))
- {
- /* XXX - under what circumstances is a job not present in the jobs
- table (job == NO_JOB)?
- 1. command substitution
-
- In the case of command substitution, at least, it's probably not
- the right thing to give the terminal to the shell's process group,
- even though there is code in subst.c:command_substitute to work
- around it.
-
- Things that don't:
- $PROMPT_COMMAND execution
- process substitution
- */
-#if 0
-if (job == NO_JOB)
- itrace("wait_for: job == NO_JOB, giving the terminal to shell_pgrp (%ld)", (long)shell_pgrp);
-#endif
- /* Don't modify terminal pgrp if we are running in the background */
- if (running_in_background == 0)
- give_terminal_to (shell_pgrp, 0);
- }
-
- /* If the command did not exit cleanly, or the job is just
- being stopped, then reset the tty state back to what it
- was before this command. Reset the tty state and notify
- the user of the job termination only if the shell is
- interactive. Clean up any dead jobs in either case. */
- if (job != NO_JOB)
- {
- if (interactive_shell && subshell_environment == 0)
- {
- /* This used to use `child->status'. That's wrong, however, for
- pipelines. `child' is the first process in the pipeline. It's
- likely that the process we want to check for abnormal termination
- or stopping is the last process in the pipeline, especially if
- it's long-lived and the first process is short-lived. Since we
- know we have a job here, we can check all the processes in this
- job's pipeline and see if one of them stopped or terminated due
- to a signal. We might want to change this later to just check
- the last process in the pipeline. If no process exits due to a
- signal, S is left as the status of the last job in the pipeline. */
- s = job_signal_status (job);
-
- if (WIFSIGNALED (s) || WIFSTOPPED (s))
- {
- set_tty_state ();
-
- /* If the current job was stopped or killed by a signal, and
- the user has requested it, get a possibly new window size */
- if (check_window_size && (job == js.j_current || IS_FOREGROUND (job)))
- get_new_window_size (0, (int *)0, (int *)0);
- }
- else
- get_tty_state ();
-
- /* If job control is enabled, the job was started with job
- control, the job was the foreground job, and it was killed
- by SIGINT, then print a newline to compensate for the kernel
- printing the ^C without a trailing newline. */
- if (job_control && IS_JOBCONTROL (job) && IS_FOREGROUND (job) &&
- WIFSIGNALED (s) && WTERMSIG (s) == SIGINT)
- {
- /* If SIGINT is not trapped and the shell is in a for, while,
- or until loop, act as if the shell received SIGINT as
- well, so the loop can be broken. This doesn't call the
- SIGINT signal handler; maybe it should. */
- if (signal_is_trapped (SIGINT) == 0 && (loop_level || (shell_compatibility_level > 32 && executing_list)))
- ADDINTERRUPT;
- else
- {
- putchar ('\n');
- fflush (stdout);
- }
- }
- }
- else if ((subshell_environment & (SUBSHELL_COMSUB|SUBSHELL_PIPE)) && wait_sigint_received)
- {
- /* If waiting for a job in a subshell started to do command
- substitution or to run a pipeline element that consists of
- something like a while loop or a for loop, simulate getting
- and being killed by the SIGINT to pass the status back to our
- parent. */
- s = job_signal_status (job);
-
- if (child_caught_sigint == 0 && signal_is_trapped (SIGINT) == 0)
- {
- UNBLOCK_CHILD (oset);
- old_sigint_handler = set_signal_handler (SIGINT, SIG_DFL);
- if (old_sigint_handler == SIG_IGN)
- restore_sigint_handler ();
- else
- kill (getpid (), SIGINT);
- }
- }
- else if (interactive_shell == 0 && IS_FOREGROUND (job) && check_window_size)
- get_new_window_size (0, (int *)0, (int *)0);
-
- /* Moved here from set_job_status_and_cleanup, which is in the SIGCHLD
- signal handler path */
- if (DEADJOB (job) && IS_FOREGROUND (job) /*&& subshell_environment == 0*/)
- setjstatus (job);
-
- /* If this job is dead, notify the user of the status. If the shell
- is interactive, this will display a message on the terminal. If
- the shell is not interactive, make sure we turn on the notify bit
- so we don't get an unwanted message about the job's termination,
- and so delete_job really clears the slot in the jobs table. */
- notify_and_cleanup ();
- }
-
-wait_for_return:
-
- UNBLOCK_CHILD (oset);
-
- return (termination_state);
-}
-
-/* Wait for the last process in the pipeline for JOB. Returns whatever
- wait_for returns: the last process's termination state or -1 if there
- are no unwaited-for child processes or an error occurs. */
-int
-wait_for_job (job)
- int job;
-{
- pid_t pid;
- int r;
- sigset_t set, oset;
-
- BLOCK_CHILD(set, oset);
- if (JOBSTATE (job) == JSTOPPED)
- internal_warning (_("wait_for_job: job %d is stopped"), job+1);
-
- pid = find_last_pid (job, 0);
- UNBLOCK_CHILD(oset);
- r = wait_for (pid);
-
- /* POSIX.2: we can remove the job from the jobs table if we just waited
- for it. */
- BLOCK_CHILD (set, oset);
- if (job != NO_JOB && jobs[job] && DEADJOB (job))
- jobs[job]->flags |= J_NOTIFIED;
- UNBLOCK_CHILD (oset);
-
- return r;
-}
-
-/* Wait for any background job started by this shell to finish. Very
- similar to wait_for_background_pids(). Returns the exit status of
- the next exiting job, -1 if there are no background jobs. The caller
- is responsible for translating -1 into the right return value. */
-int
-wait_for_any_job ()
-{
- pid_t pid;
- int i, r, waited_for;
- sigset_t set, oset;
-
- if (jobs_list_frozen)
- return -1;
-
- /* First see if there are any unnotified dead jobs that we can report on */
- BLOCK_CHILD (set, oset);
- for (i = 0; i < js.j_jobslots; i++)
- {
- if (jobs[i] && DEADJOB (i) && IS_NOTIFIED (i) == 0)
- {
-return_job:
- r = job_exit_status (i);
- notify_of_job_status (); /* XXX */
- delete_job (i, 0);
-#if defined (COPROCESS_SUPPORT)
- coproc_reap ();
-#endif
- UNBLOCK_CHILD (oset);
- return r;
- }
- }
- UNBLOCK_CHILD (oset);
-
- /* At this point, we have no dead jobs in the jobs table. Wait until we
- get one, even if it takes multiple pids exiting. */
- for (waited_for = 0;;)
- {
- /* Make sure there is a background job to wait for */
- BLOCK_CHILD (set, oset);
- for (i = 0; i < js.j_jobslots; i++)
- if (jobs[i] && RUNNING (i) && IS_FOREGROUND (i) == 0)
- break;
- if (i == js.j_jobslots)
- {
- UNBLOCK_CHILD (oset);
- return -1;
- }
-
- UNBLOCK_CHILD (oset);
-
- QUIT;
- CHECK_TERMSIG;
- CHECK_WAIT_INTR;
-
- errno = 0;
- r = wait_for (ANY_PID); /* special sentinel value for wait_for */
- if (r == -1 && errno == ECHILD)
- mark_all_jobs_as_dead ();
-
- /* Now we see if we have any dead jobs and return the first one */
- BLOCK_CHILD (set, oset);
- for (i = 0; i < js.j_jobslots; i++)
- if (jobs[i] && DEADJOB (i))
- goto return_job;
- UNBLOCK_CHILD (oset);
- }
-
- return -1;
-}
-
-/* Print info about dead jobs, and then delete them from the list
- of known jobs. This does not actually delete jobs when the
- shell is not interactive, because the dead jobs are not marked
- as notified. */
-void
-notify_and_cleanup ()
-{
- if (jobs_list_frozen)
- return;
-
- if (interactive || interactive_shell == 0 || sourcelevel)
- notify_of_job_status ();
-
- cleanup_dead_jobs ();
-}
-
-/* Make dead jobs disappear from the jobs array without notification.
- This is used when the shell is not interactive. */
-void
-reap_dead_jobs ()
-{
- mark_dead_jobs_as_notified (0);
- cleanup_dead_jobs ();
-}
-
-/* Return the next closest (chronologically) job to JOB which is in
- STATE. STATE can be JSTOPPED, JRUNNING. NO_JOB is returned if
- there is no next recent job. */
-static int
-most_recent_job_in_state (job, state)
- int job;
- JOB_STATE state;
-{
- register int i, result;
- sigset_t set, oset;
-
- BLOCK_CHILD (set, oset);
-
- for (result = NO_JOB, i = job - 1; i >= 0; i--)
- {
- if (jobs[i] && (JOBSTATE (i) == state))
- {
- result = i;
- break;
- }
- }
-
- UNBLOCK_CHILD (oset);
-
- return (result);
-}
-
-/* Return the newest *stopped* job older than JOB, or NO_JOB if not
- found. */
-static int
-job_last_stopped (job)
- int job;
-{
- return (most_recent_job_in_state (job, JSTOPPED));
-}
-
-/* Return the newest *running* job older than JOB, or NO_JOB if not
- found. */
-static int
-job_last_running (job)
- int job;
-{
- return (most_recent_job_in_state (job, JRUNNING));
-}
-
-/* Make JOB be the current job, and make previous be useful. Must be
- called with SIGCHLD blocked. */
-static void
-set_current_job (job)
- int job;
-{
- int candidate;
-
- if (js.j_current != job)
- {
- js.j_previous = js.j_current;
- js.j_current = job;
- }
-
- /* First choice for previous job is the old current job. */
- if (js.j_previous != js.j_current &&
- js.j_previous != NO_JOB &&
- jobs[js.j_previous] &&
- STOPPED (js.j_previous))
- return;
-
- /* Second choice: Newest stopped job that is older than
- the current job. */
- candidate = NO_JOB;
- if (STOPPED (js.j_current))
- {
- candidate = job_last_stopped (js.j_current);
-
- if (candidate != NO_JOB)
- {
- js.j_previous = candidate;
- return;
- }
- }
-
- /* If we get here, there is either only one stopped job, in which case it is
- the current job and the previous job should be set to the newest running
- job, or there are only running jobs and the previous job should be set to
- the newest running job older than the current job. We decide on which
- alternative to use based on whether or not JOBSTATE(js.j_current) is
- JSTOPPED. */
-
- candidate = RUNNING (js.j_current) ? job_last_running (js.j_current)
- : job_last_running (js.j_jobslots);
-
- if (candidate != NO_JOB)
- {
- js.j_previous = candidate;
- return;
- }
-
- /* There is only a single job, and it is both `+' and `-'. */
- js.j_previous = js.j_current;
-}
-
-/* Make current_job be something useful, if it isn't already. */
-
-/* Here's the deal: The newest non-running job should be `+', and the
- next-newest non-running job should be `-'. If there is only a single
- stopped job, the js.j_previous is the newest non-running job. If there
- are only running jobs, the newest running job is `+' and the
- next-newest running job is `-'. Must be called with SIGCHLD blocked. */
-
-static void
-reset_current ()
-{
- int candidate;
-
- if (js.j_jobslots && js.j_current != NO_JOB && jobs[js.j_current] && STOPPED (js.j_current))
- candidate = js.j_current;
- else
- {
- candidate = NO_JOB;
-
- /* First choice: the previous job. */
- if (js.j_previous != NO_JOB && jobs[js.j_previous] && STOPPED (js.j_previous))
- candidate = js.j_previous;
-
- /* Second choice: the most recently stopped job. */
- if (candidate == NO_JOB)
- candidate = job_last_stopped (js.j_jobslots);
-
- /* Third choice: the newest running job. */
- if (candidate == NO_JOB)
- candidate = job_last_running (js.j_jobslots);
- }
-
- /* If we found a job to use, then use it. Otherwise, there
- are no jobs period. */
- if (candidate != NO_JOB)
- set_current_job (candidate);
- else
- js.j_current = js.j_previous = NO_JOB;
-}
-
-/* Set up the job structures so we know the job and its processes are
- all running. */
-static void
-set_job_running (job)
- int job;
-{
- register PROCESS *p;
-
- /* Each member of the pipeline is now running. */
- p = jobs[job]->pipe;
-
- do
- {
- if (WIFSTOPPED (p->status))
- p->running = PS_RUNNING; /* XXX - could be PS_STOPPED */
- p = p->next;
- }
- while (p != jobs[job]->pipe);
-
- /* This means that the job is running. */
- JOBSTATE (job) = JRUNNING;
-}
-
-/* Start a job. FOREGROUND if non-zero says to do that. Otherwise,
- start the job in the background. JOB is a zero-based index into
- JOBS. Returns -1 if it is unable to start a job, and the return
- status of the job otherwise. */
-int
-start_job (job, foreground)
- int job, foreground;
-{
- register PROCESS *p;
- int already_running;
- sigset_t set, oset;
- char *wd, *s;
- static TTYSTRUCT save_stty;
-
- BLOCK_CHILD (set, oset);
-
- if (DEADJOB (job))
- {
- internal_error (_("%s: job has terminated"), this_command_name);
- UNBLOCK_CHILD (oset);
- return (-1);
- }
-
- already_running = RUNNING (job);
-
- if (foreground == 0 && already_running)
- {
- internal_error (_("%s: job %d already in background"), this_command_name, job + 1);
- UNBLOCK_CHILD (oset);
- return (0); /* XPG6/SUSv3 says this is not an error */
- }
-
- wd = current_working_directory ();
-
- /* You don't know about the state of this job. Do you? */
- jobs[job]->flags &= ~J_NOTIFIED;
-
- if (foreground)
- {
- set_current_job (job);
- jobs[job]->flags |= J_FOREGROUND;
- }
-
- /* Tell the outside world what we're doing. */
- p = jobs[job]->pipe;
-
- if (foreground == 0)
- {
- /* POSIX.2 says `bg' doesn't give any indication about current or
- previous job. */
- if (posixly_correct == 0)
- s = (job == js.j_current) ? "+ ": ((job == js.j_previous) ? "- " : " ");
- else
- s = " ";
- printf ("[%d]%s", job + 1, s);
- }
-
- do
- {
- printf ("%s%s",
- p->command ? p->command : "",
- p->next != jobs[job]->pipe? " | " : "");
- p = p->next;
- }
- while (p != jobs[job]->pipe);
-
- if (foreground == 0)
- printf (" &");
-
- if (strcmp (wd, jobs[job]->wd) != 0)
- printf (" (wd: %s)", polite_directory_format (jobs[job]->wd));
-
- printf ("\n");
-
- /* Run the job. */
- if (already_running == 0)
- set_job_running (job);
-
- /* Save the tty settings before we start the job in the foreground. */
- if (foreground)
- {
- get_tty_state ();
- save_stty = shell_tty_info;
- /* Give the terminal to this job. */
- if (IS_JOBCONTROL (job))
- give_terminal_to (jobs[job]->pgrp, 0);
- }
- else
- jobs[job]->flags &= ~J_FOREGROUND;
-
- /* If the job is already running, then don't bother jump-starting it. */
- if (already_running == 0)
- {
- jobs[job]->flags |= J_NOTIFIED;
- killpg (jobs[job]->pgrp, SIGCONT);
- }
-
- if (foreground)
- {
- pid_t pid;
- int st;
-
- pid = find_last_pid (job, 0);
- UNBLOCK_CHILD (oset);
- st = wait_for (pid);
- shell_tty_info = save_stty;
- set_tty_state ();
- return (st);
- }
- else
- {
- reset_current ();
- UNBLOCK_CHILD (oset);
- return (0);
- }
-}
-
-/* Give PID SIGNAL. This determines what job the pid belongs to (if any).
- If PID does belong to a job, and the job is stopped, then CONTinue the
- job after giving it SIGNAL. Returns -1 on failure. If GROUP is non-null,
- then kill the process group associated with PID. */
-int
-kill_pid (pid, sig, group)
- pid_t pid;
- int sig, group;
-{
- register PROCESS *p;
- int job, result, negative;
- sigset_t set, oset;
-
- if (pid < -1)
- {
- pid = -pid;
- group = negative = 1;
- }
- else
- negative = 0;
-
- result = EXECUTION_SUCCESS;
- if (group)
- {
- BLOCK_CHILD (set, oset);
- p = find_pipeline (pid, 0, &job);
-
- if (job != NO_JOB)
- {
- jobs[job]->flags &= ~J_NOTIFIED;
-
- /* Kill process in backquotes or one started without job control? */
-
- /* If we're passed a pid < -1, just call killpg and see what happens */
- if (negative && jobs[job]->pgrp == shell_pgrp)
- result = killpg (pid, sig);
- /* If we're killing using job control notification, for example,
- without job control active, we have to do things ourselves. */
- else if (jobs[job]->pgrp == shell_pgrp)
- {
- p = jobs[job]->pipe;
- do
- {
- if (PALIVE (p) == 0)
- continue; /* avoid pid recycling problem */
- kill (p->pid, sig);
- if (PEXITED (p) && (sig == SIGTERM || sig == SIGHUP))
- kill (p->pid, SIGCONT);
- p = p->next;
- }
- while (p != jobs[job]->pipe);
- }
- else
- {
- result = killpg (jobs[job]->pgrp, sig);
- if (p && STOPPED (job) && (sig == SIGTERM || sig == SIGHUP))
- killpg (jobs[job]->pgrp, SIGCONT);
- /* If we're continuing a stopped job via kill rather than bg or
- fg, emulate the `bg' behavior. */
- if (p && STOPPED (job) && (sig == SIGCONT))
- {
- set_job_running (job);
- jobs[job]->flags &= ~J_FOREGROUND;
- jobs[job]->flags |= J_NOTIFIED;
- }
- }
- }
- else
- result = killpg (pid, sig);
-
- UNBLOCK_CHILD (oset);
- }
- else
- result = kill (pid, sig);
-
- return (result);
-}
-
-/* sigchld_handler () flushes at least one of the children that we are
- waiting for. It gets run when we have gotten a SIGCHLD signal. */
-static sighandler
-sigchld_handler (sig)
- int sig;
-{
- int n, oerrno;
-
- oerrno = errno;
- REINSTALL_SIGCHLD_HANDLER;
- sigchld++;
- n = 0;
- if (queue_sigchld == 0)
- n = waitchld (-1, 0);
- errno = oerrno;
- SIGRETURN (n);
-}
-
-/* waitchld() reaps dead or stopped children. It's called by wait_for and
- sigchld_handler, and runs until there aren't any children terminating any
- more.
- If BLOCK is 1, this is to be a blocking wait for a single child, although
- an arriving SIGCHLD could cause the wait to be non-blocking. It returns
- the number of children reaped, or -1 if there are no unwaited-for child
- processes. */
-static int
-waitchld (wpid, block)
- pid_t wpid;
- int block;
-{
- WAIT status;
- PROCESS *child;
- pid_t pid;
-
- int call_set_current, last_stopped_job, job, children_exited, waitpid_flags;
- static int wcontinued = WCONTINUED; /* run-time fix for glibc problem */
-
- call_set_current = children_exited = 0;
- last_stopped_job = NO_JOB;
-
- do
- {
- /* We don't want to be notified about jobs stopping if job control
- is not active. XXX - was interactive_shell instead of job_control */
- waitpid_flags = (job_control && subshell_environment == 0)
- ? (WUNTRACED|wcontinued)
- : 0;
- if (sigchld || block == 0)
- waitpid_flags |= WNOHANG;
-
- /* Check for terminating signals and exit the shell if we receive one */
- CHECK_TERMSIG;
- /* Check for a trapped signal interrupting the wait builtin and jump out */
- CHECK_WAIT_INTR;
-
- if (block == 1 && queue_sigchld == 0 && (waitpid_flags & WNOHANG) == 0)
- {
- internal_warning (_("waitchld: turning on WNOHANG to avoid indefinite block"));
- waitpid_flags |= WNOHANG;
- }
-
- pid = WAITPID (-1, &status, waitpid_flags);
-
-#if 0
-if (wpid != -1 && block)
- itrace("waitchld: blocking waitpid returns %d", pid);
-#endif
- /* WCONTINUED may be rejected by waitpid as invalid even when defined */
- if (wcontinued && pid < 0 && errno == EINVAL)
- {
- wcontinued = 0;
- continue; /* jump back to the test and retry without WCONTINUED */
- }
-
- /* The check for WNOHANG is to make sure we decrement sigchld only
- if it was non-zero before we called waitpid. */
- if (sigchld > 0 && (waitpid_flags & WNOHANG))
- sigchld--;
-
- /* If waitpid returns -1 with errno == ECHILD, there are no more
- unwaited-for child processes of this shell. */
- if (pid < 0 && errno == ECHILD)
- {
- if (children_exited == 0)
- return -1;
- else
- break;
- }
-
-#if 0
-itrace("waitchld: waitpid returns %d block = %d children_exited = %d", pid, block, children_exited);
-#endif
- /* If waitpid returns 0, there are running children. If it returns -1,
- the only other error POSIX says it can return is EINTR. */
- CHECK_TERMSIG;
- CHECK_WAIT_INTR;
-
- /* If waitpid returns -1/EINTR and the shell saw a SIGINT, then we
- assume the child has blocked or handled SIGINT. In that case, we
- require the child to actually die due to SIGINT to act on the
- SIGINT we received; otherwise we assume the child handled it and
- let it go. */
- if (pid < 0 && errno == EINTR && wait_sigint_received)
- child_caught_sigint = 1;
-
- if (pid <= 0)
- continue; /* jumps right to the test */
-
- /* If the child process did die due to SIGINT, forget our assumption
- that it caught or otherwise handled it. */
- if (WIFSIGNALED (status) && WTERMSIG (status) == SIGINT)
- child_caught_sigint = 0;
-
- /* children_exited is used to run traps on SIGCHLD. We don't want to
- run the trap if a process is just being continued. */
- if (WIFCONTINUED(status) == 0)
- {
- children_exited++;
- js.c_living--;
- }
-
- /* Locate our PROCESS for this pid. */
- child = find_process (pid, 1, &job); /* want living procs only */
-
-#if defined (COPROCESS_SUPPORT)
- coproc_pidchk (pid, WSTATUS(status));
-#endif
-
- /* It is not an error to have a child terminate that we did
- not have a record of. This child could have been part of
- a pipeline in backquote substitution. Even so, I'm not
- sure child is ever non-zero. */
- if (child == 0)
- {
- if (WIFEXITED (status) || WIFSIGNALED (status))
- js.c_reaped++;
- continue;
- }
-
- /* Remember status, and whether or not the process is running. */
- child->status = status;
- child->running = WIFCONTINUED(status) ? PS_RUNNING : PS_DONE;
-
- if (PEXITED (child))
- {
- js.c_totreaped++;
- if (job != NO_JOB)
- js.c_reaped++;
- }
-
- if (job == NO_JOB)
- continue;
-
- call_set_current += set_job_status_and_cleanup (job);
-
- if (STOPPED (job))
- last_stopped_job = job;
- else if (DEADJOB (job) && last_stopped_job == job)
- last_stopped_job = NO_JOB;
- }
- while ((sigchld || block == 0) && pid > (pid_t)0);
-
- /* If a job was running and became stopped, then set the current
- job. Otherwise, don't change a thing. */
- if (call_set_current)
- {
- if (last_stopped_job != NO_JOB)
- set_current_job (last_stopped_job);
- else
- reset_current ();
- }
-
- /* Call a SIGCHLD trap handler for each child that exits, if one is set. */
- if (job_control && signal_is_trapped (SIGCHLD) && children_exited &&
- trap_list[SIGCHLD] != (char *)IGNORE_SIG)
- {
- if (posixly_correct && this_shell_builtin && this_shell_builtin == wait_builtin)
- {
- interrupt_immediately = 0;
- /* This was trap_handler (SIGCHLD) but that can lose traps if
- children_exited > 1 */
- queue_sigchld_trap (children_exited);
- wait_signal_received = SIGCHLD;
- /* If we're in a signal handler, let CHECK_WAIT_INTR pick it up;
- run_pending_traps will call run_sigchld_trap later */
- if (sigchld == 0)
- longjmp (wait_intr_buf, 1);
- }
- /* If not in posix mode and not executing the wait builtin, queue the
- signal for later handling. Run the trap immediately if we are
- executing the wait builtin, but don't break out of `wait'. */
- else if (sigchld) /* called from signal handler */
- queue_sigchld_trap (children_exited);
- else if (running_trap)
- queue_sigchld_trap (children_exited);
- else if (this_shell_builtin == wait_builtin)
- run_sigchld_trap (children_exited); /* XXX */
- else
- queue_sigchld_trap (children_exited);
- }
-
- /* We have successfully recorded the useful information about this process
- that has just changed state. If we notify asynchronously, and the job
- that this process belongs to is no longer running, then notify the user
- of that fact now. */
- if (asynchronous_notification && interactive)
- notify_of_job_status ();
-
- return (children_exited);
-}
-
-/* Set the status of JOB and perform any necessary cleanup if the job is
- marked as JDEAD.
-
- Currently, the cleanup activity is restricted to handling any SIGINT
- received while waiting for a foreground job to finish. */
-static int
-set_job_status_and_cleanup (job)
- int job;
-{
- PROCESS *child;
- int tstatus, job_state, any_stopped, any_tstped, call_set_current;
- SigHandler *temp_handler;
-
- child = jobs[job]->pipe;
- jobs[job]->flags &= ~J_NOTIFIED;
-
- call_set_current = 0;
-
- /*
- * COMPUTE JOB STATUS
- */
-
- /* If all children are not running, but any of them is stopped, then
- the job is stopped, not dead. */
- job_state = any_stopped = any_tstped = 0;
- do
- {
- job_state |= PRUNNING (child);
-#if 0
- if (PEXITED (child) && (WIFSTOPPED (child->status)))
-#else
- /* Only checking for WIFSTOPPED now, not for PS_DONE */
- if (PSTOPPED (child))
-#endif
- {
- any_stopped = 1;
- any_tstped |= job_control && (WSTOPSIG (child->status) == SIGTSTP);
- }
- child = child->next;
- }
- while (child != jobs[job]->pipe);
-
- /* If job_state != 0, the job is still running, so don't bother with
- setting the process exit status and job state unless we're
- transitioning from stopped to running. */
- if (job_state != 0 && JOBSTATE(job) != JSTOPPED)
- return 0;
-
- /*
- * SET JOB STATUS
- */
-
- /* The job is either stopped or dead. Set the state of the job accordingly. */
- if (any_stopped)
- {
- jobs[job]->state = JSTOPPED;
- jobs[job]->flags &= ~J_FOREGROUND;
- call_set_current++;
- /* Suspending a job with SIGTSTP breaks all active loops. */
- if (any_tstped && loop_level)
- breaking = loop_level;
- }
- else if (job_state != 0) /* was stopped, now running */
- {
- jobs[job]->state = JRUNNING;
- call_set_current++;
- }
- else
- {
- jobs[job]->state = JDEAD;
- js.j_ndead++;
-
-#if 0
- if (IS_FOREGROUND (job))
- setjstatus (job);
-#endif
-
- /* If this job has a cleanup function associated with it, call it
- with `cleanarg' as the single argument, then set the function
- pointer to NULL so it is not inadvertently called twice. The
- cleanup function is responsible for deallocating cleanarg. */
- if (jobs[job]->j_cleanup)
- {
- (*jobs[job]->j_cleanup) (jobs[job]->cleanarg);
- jobs[job]->j_cleanup = (sh_vptrfunc_t *)NULL;
- }
- }
-
- /*
- * CLEANUP
- *
- * Currently, we just do special things if we got a SIGINT while waiting
- * for a foreground job to complete
- */
-
- if (JOBSTATE (job) == JDEAD)
- {
- /* If we're running a shell script and we get a SIGINT with a
- SIGINT trap handler, but the foreground job handles it and
- does not exit due to SIGINT, run the trap handler but do not
- otherwise act as if we got the interrupt. */
- if (wait_sigint_received && interactive_shell == 0 &&
- child_caught_sigint && IS_FOREGROUND (job) &&
- signal_is_trapped (SIGINT))
- {
- int old_frozen;
- wait_sigint_received = 0;
- last_command_exit_value = process_exit_status (child->status);
-
- old_frozen = jobs_list_frozen;
- jobs_list_frozen = 1;
- tstatus = maybe_call_trap_handler (SIGINT);
- jobs_list_frozen = old_frozen;
- }
-
- /* If the foreground job is killed by SIGINT when job control is not
- active, we need to perform some special handling.
-
- The check of wait_sigint_received is a way to determine if the
- SIGINT came from the keyboard (in which case the shell has already
- seen it, and wait_sigint_received is non-zero, because keyboard
- signals are sent to process groups) or via kill(2) to the foreground
- process by another process (or itself). If the shell did receive the
- SIGINT, it needs to perform normal SIGINT processing. */
- else if (wait_sigint_received &&
- child_caught_sigint == 0 &&
- IS_FOREGROUND (job) && IS_JOBCONTROL (job) == 0)
- {
- int old_frozen;
-
- wait_sigint_received = 0;
-
- /* If SIGINT is trapped, set the exit status so that the trap
- handler can see it. */
- if (signal_is_trapped (SIGINT))
- last_command_exit_value = process_exit_status (child->status);
-
- /* If the signal is trapped, let the trap handler get it no matter
- what and simply return if the trap handler returns.
- maybe_call_trap_handler() may cause dead jobs to be removed from
- the job table because of a call to execute_command. We work
- around this by setting JOBS_LIST_FROZEN. */
- old_frozen = jobs_list_frozen;
- jobs_list_frozen = 1;
- tstatus = maybe_call_trap_handler (SIGINT);
- jobs_list_frozen = old_frozen;
- if (tstatus == 0 && old_sigint_handler != INVALID_SIGNAL_HANDLER)
- {
- /* wait_sigint_handler () has already seen SIGINT and
- allowed the wait builtin to jump out. We need to
- call the original SIGINT handler, if necessary. If
- the original handler is SIG_DFL, we need to resend
- the signal to ourselves. */
-
- temp_handler = old_sigint_handler;
-
- /* Bogus. If we've reset the signal handler as the result
- of a trap caught on SIGINT, then old_sigint_handler
- will point to trap_handler, which now knows nothing about
- SIGINT (if we reset the sighandler to the default).
- In this case, we have to fix things up. What a crock. */
- if (temp_handler == trap_handler && signal_is_trapped (SIGINT) == 0)
- temp_handler = trap_to_sighandler (SIGINT);
- restore_sigint_handler ();
- if (temp_handler == SIG_DFL)
- termsig_handler (SIGINT); /* XXX */
- else if (temp_handler != SIG_IGN)
- (*temp_handler) (SIGINT);
- }
- }
- }
-
- return call_set_current;
-}
-
-/* Build the array of values for the $PIPESTATUS variable from the set of
- exit statuses of all processes in the job J. */
-static void
-setjstatus (j)
- int j;
-{
-#if defined (ARRAY_VARS)
- register int i;
- register PROCESS *p;
-
- for (i = 1, p = jobs[j]->pipe; p->next != jobs[j]->pipe; p = p->next, i++)
- ;
- i++;
- if (statsize < i)
- {
- pstatuses = (int *)xrealloc (pstatuses, i * sizeof (int));
- statsize = i;
- }
- i = 0;
- p = jobs[j]->pipe;
- do
- {
- pstatuses[i++] = process_exit_status (p->status);
- p = p->next;
- }
- while (p != jobs[j]->pipe);
-
- pstatuses[i] = -1; /* sentinel */
- set_pipestatus_array (pstatuses, i);
-#endif
-}
-
-void
-run_sigchld_trap (nchild)
- int nchild;
-{
- char *trap_command;
- int i;
-
- /* Turn off the trap list during the call to parse_and_execute ()
- to avoid potentially infinite recursive calls. Preserve the
- values of last_command_exit_value, last_made_pid, and the_pipeline
- around the execution of the trap commands. */
- trap_command = savestring (trap_list[SIGCHLD]);
-
- begin_unwind_frame ("SIGCHLD trap");
- unwind_protect_int (last_command_exit_value);
- unwind_protect_int (last_command_exit_signal);
- unwind_protect_var (last_made_pid);
- unwind_protect_int (interrupt_immediately);
- unwind_protect_int (jobs_list_frozen);
- unwind_protect_pointer (the_pipeline);
- unwind_protect_pointer (subst_assign_varlist);
- unwind_protect_pointer (this_shell_builtin);
-
- /* We have to add the commands this way because they will be run
- in reverse order of adding. We don't want maybe_set_sigchld_trap ()
- to reference freed memory. */
- add_unwind_protect (xfree, trap_command);
- add_unwind_protect (maybe_set_sigchld_trap, trap_command);
-
- subst_assign_varlist = (WORD_LIST *)NULL;
- the_pipeline = (PROCESS *)NULL;
-
- running_trap = SIGCHLD + 1;
-
- set_impossible_sigchld_trap ();
- jobs_list_frozen = 1;
- for (i = 0; i < nchild; i++)
- {
-#if 0
- interrupt_immediately = 1;
-#endif
- parse_and_execute (savestring (trap_command), "trap", SEVAL_NOHIST|SEVAL_RESETLINE);
- }
-
- run_unwind_frame ("SIGCHLD trap");
- running_trap = 0;
-}
-
-/* Function to call when you want to notify people of changes
- in job status. This prints out all jobs which are pending
- notification to stderr, and marks those printed as already
- notified, thus making them candidates for cleanup. */
-static void
-notify_of_job_status ()
-{
- register int job, termsig;
- char *dir;
- sigset_t set, oset;
- WAIT s;
-
- if (jobs == 0 || js.j_jobslots == 0)
- return;
-
- if (old_ttou != 0)
- {
- sigemptyset (&set);
- sigaddset (&set, SIGCHLD);
- sigaddset (&set, SIGTTOU);
- sigemptyset (&oset);
- sigprocmask (SIG_BLOCK, &set, &oset);
- }
- else
- queue_sigchld++;
-
- /* XXX could use js.j_firstj here */
- for (job = 0, dir = (char *)NULL; job < js.j_jobslots; job++)
- {
- if (jobs[job] && IS_NOTIFIED (job) == 0)
- {
- s = raw_job_exit_status (job);
- termsig = WTERMSIG (s);
-
- /* POSIX.2 says we have to hang onto the statuses of at most the
- last CHILD_MAX background processes if the shell is running a
- script. If the shell is running a script, either from a file
- or standard input, don't print anything unless the job was
- killed by a signal. */
- if (startup_state == 0 && WIFSIGNALED (s) == 0 &&
- ((DEADJOB (job) && IS_FOREGROUND (job) == 0) || STOPPED (job)))
- continue;
-
-#if 0
- /* If job control is disabled, don't print the status messages.
- Mark dead jobs as notified so that they get cleaned up. If
- startup_state == 2, we were started to run `-c command', so
- don't print anything. */
- if ((job_control == 0 && interactive_shell) || startup_state == 2)
-#else
- /* If job control is disabled, don't print the status messages.
- Mark dead jobs as notified so that they get cleaned up. If
- startup_state == 2 and subshell_environment has the
- SUBSHELL_COMSUB bit turned on, we were started to run a command
- substitution, so don't print anything. */
- if ((job_control == 0 && interactive_shell) ||
- (startup_state == 2 && (subshell_environment & SUBSHELL_COMSUB)))
-#endif
- {
- /* POSIX.2 compatibility: if the shell is not interactive,
- hang onto the job corresponding to the last asynchronous
- pid until the user has been notified of its status or does
- a `wait'. */
- if (DEADJOB (job) && (interactive_shell || (find_last_pid (job, 0) != last_asynchronous_pid)))
- jobs[job]->flags |= J_NOTIFIED;
- continue;
- }
-
- /* Print info on jobs that are running in the background,
- and on foreground jobs that were killed by anything
- except SIGINT (and possibly SIGPIPE). */
- switch (JOBSTATE (job))
- {
- case JDEAD:
- if (interactive_shell == 0 && termsig && WIFSIGNALED (s) &&
- termsig != SIGINT &&
-#if defined (DONT_REPORT_SIGTERM)
- termsig != SIGTERM &&
-#endif
-#if defined (DONT_REPORT_SIGPIPE)
- termsig != SIGPIPE &&
-#endif
- signal_is_trapped (termsig) == 0)
- {
- /* Don't print `0' for a line number. */
- fprintf (stderr, _("%s: line %d: "), get_name_for_error (), (line_number == 0) ? 1 : line_number);
- pretty_print_job (job, JLIST_NONINTERACTIVE, stderr);
- }
- else if (IS_FOREGROUND (job))
- {
-#if !defined (DONT_REPORT_SIGPIPE)
- if (termsig && WIFSIGNALED (s) && termsig != SIGINT)
-#else
- if (termsig && WIFSIGNALED (s) && termsig != SIGINT && termsig != SIGPIPE)
-#endif
- {
- fprintf (stderr, "%s", j_strsignal (termsig));
-
- if (WIFCORED (s))
- fprintf (stderr, _(" (core dumped)"));
-
- fprintf (stderr, "\n");
- }
- }
- else if (job_control) /* XXX job control test added */
- {
- if (dir == 0)
- dir = current_working_directory ();
- pretty_print_job (job, JLIST_STANDARD, stderr);
- if (dir && strcmp (dir, jobs[job]->wd) != 0)
- fprintf (stderr,
- _("(wd now: %s)\n"), polite_directory_format (dir));
- }
-
- jobs[job]->flags |= J_NOTIFIED;
- break;
-
- case JSTOPPED:
- fprintf (stderr, "\n");
- if (dir == 0)
- dir = current_working_directory ();
- pretty_print_job (job, JLIST_STANDARD, stderr);
- if (dir && (strcmp (dir, jobs[job]->wd) != 0))
- fprintf (stderr,
- _("(wd now: %s)\n"), polite_directory_format (dir));
- jobs[job]->flags |= J_NOTIFIED;
- break;
-
- case JRUNNING:
- case JMIXED:
- break;
-
- default:
- programming_error ("notify_of_job_status");
- }
- }
- }
- if (old_ttou != 0)
- sigprocmask (SIG_SETMASK, &oset, (sigset_t *)NULL);
- else
- queue_sigchld--;
-}
-
-/* Initialize the job control mechanism, and set up the tty stuff. */
-int
-initialize_job_control (force)
- int force;
-{
- pid_t t;
- int t_errno;
-
- t_errno = -1;
- shell_pgrp = getpgid (0);
-
- if (shell_pgrp == -1)
- {
- sys_error (_("initialize_job_control: getpgrp failed"));
- exit (1);
- }
-
- /* We can only have job control if we are interactive unless we force it. */
- if (interactive == 0 && force == 0)
- {
- job_control = 0;
- original_pgrp = NO_PID;
- shell_tty = fileno (stderr);
- terminal_pgrp = tcgetpgrp (shell_tty); /* for checking later */
- }
- else
- {
- shell_tty = -1;
-
- /* If forced_interactive is set, we skip the normal check that stderr
- is attached to a tty, so we need to check here. If it's not, we
- need to see whether we have a controlling tty by opening /dev/tty,
- since trying to use job control tty pgrp manipulations on a non-tty
- is going to fail. */
- if (forced_interactive && isatty (fileno (stderr)) == 0)
- shell_tty = open ("/dev/tty", O_RDWR|O_NONBLOCK);
-
- /* Get our controlling terminal. If job_control is set, or
- interactive is set, then this is an interactive shell no
- matter where fd 2 is directed. */
- if (shell_tty == -1)
- shell_tty = dup (fileno (stderr)); /* fd 2 */
-
- if (shell_tty != -1)
- shell_tty = move_to_high_fd (shell_tty, 1, -1);
-
- /* Compensate for a bug in systems that compiled the BSD
- rlogind with DEBUG defined, like NeXT and Alliant. */
- if (shell_pgrp == 0)
- {
- shell_pgrp = getpid ();
- setpgid (0, shell_pgrp);
- if (shell_tty != -1)
- tcsetpgrp (shell_tty, shell_pgrp);
- }
-
- while ((terminal_pgrp = tcgetpgrp (shell_tty)) != -1)
- {
- if (shell_pgrp != terminal_pgrp)
- {
- SigHandler *ottin;
-
- ottin = set_signal_handler (SIGTTIN, SIG_DFL);
- kill (0, SIGTTIN);
- set_signal_handler (SIGTTIN, ottin);
- continue;
- }
- break;
- }
-
- if (terminal_pgrp == -1)
- t_errno = errno;
-
- /* Make sure that we are using the new line discipline. */
- if (set_new_line_discipline (shell_tty) < 0)
- {
- sys_error (_("initialize_job_control: line discipline"));
- job_control = 0;
- }
- else
- {
- original_pgrp = shell_pgrp;
- shell_pgrp = getpid ();
-
- if ((original_pgrp != shell_pgrp) && (setpgid (0, shell_pgrp) < 0))
- {
- sys_error (_("initialize_job_control: setpgid"));
- shell_pgrp = original_pgrp;
- }
-
- job_control = 1;
-
- /* If (and only if) we just set our process group to our pid,
- thereby becoming a process group leader, and the terminal
- is not in the same process group as our (new) process group,
- then set the terminal's process group to our (new) process
- group. If that fails, set our process group back to what it
- was originally (so we can still read from the terminal) and
- turn off job control. */
- if (shell_pgrp != original_pgrp && shell_pgrp != terminal_pgrp)
- {
- if (give_terminal_to (shell_pgrp, 0) < 0)
- {
- t_errno = errno;
- setpgid (0, original_pgrp);
- shell_pgrp = original_pgrp;
- errno = t_errno;
- sys_error (_("cannot set terminal process group (%d)"), shell_pgrp);
- job_control = 0;
- }
- }
-
- if (job_control && ((t = tcgetpgrp (shell_tty)) == -1 || t != shell_pgrp))
- {
- if (t_errno != -1)
- errno = t_errno;
- sys_error (_("cannot set terminal process group (%d)"), t);
- job_control = 0;
- }
- }
- if (job_control == 0)
- internal_error (_("no job control in this shell"));
- }
-
- running_in_background = terminal_pgrp != shell_pgrp;
-
- if (shell_tty != fileno (stderr))
- SET_CLOSE_ON_EXEC (shell_tty);
-
- set_signal_handler (SIGCHLD, sigchld_handler);
-
- change_flag ('m', job_control ? '-' : '+');
-
- if (interactive)
- get_tty_state ();
-
- if (js.c_childmax < 0)
- js.c_childmax = getmaxchild ();
- if (js.c_childmax < 0)
- js.c_childmax = DEFAULT_CHILD_MAX;
-
- return job_control;
-}
-
-#ifdef DEBUG
-void
-debug_print_pgrps ()
-{
- itrace("original_pgrp = %ld shell_pgrp = %ld terminal_pgrp = %ld",
- (long)original_pgrp, (long)shell_pgrp, (long)terminal_pgrp);
- itrace("tcgetpgrp(%d) -> %ld, getpgid(0) -> %ld",
- shell_tty, (long)tcgetpgrp (shell_tty), (long)getpgid(0));
-}
-#endif
-
-/* Set the line discipline to the best this system has to offer.
- Return -1 if this is not possible. */
-static int
-set_new_line_discipline (tty)
- int tty;
-{
-#if defined (NEW_TTY_DRIVER)
- int ldisc;
-
- if (ioctl (tty, TIOCGETD, &ldisc) < 0)
- return (-1);
-
- if (ldisc != NTTYDISC)
- {
- ldisc = NTTYDISC;
-
- if (ioctl (tty, TIOCSETD, &ldisc) < 0)
- return (-1);
- }
- return (0);
-#endif /* NEW_TTY_DRIVER */
-
-#if defined (TERMIO_TTY_DRIVER)
-# if defined (TERMIO_LDISC) && (NTTYDISC)
- if (ioctl (tty, TCGETA, &shell_tty_info) < 0)
- return (-1);
-
- if (shell_tty_info.c_line != NTTYDISC)
- {
- shell_tty_info.c_line = NTTYDISC;
- if (ioctl (tty, TCSETAW, &shell_tty_info) < 0)
- return (-1);
- }
-# endif /* TERMIO_LDISC && NTTYDISC */
- return (0);
-#endif /* TERMIO_TTY_DRIVER */
-
-#if defined (TERMIOS_TTY_DRIVER)
-# if defined (TERMIOS_LDISC) && defined (NTTYDISC)
- if (tcgetattr (tty, &shell_tty_info) < 0)
- return (-1);
-
- if (shell_tty_info.c_line != NTTYDISC)
- {
- shell_tty_info.c_line = NTTYDISC;
- if (tcsetattr (tty, TCSADRAIN, &shell_tty_info) < 0)
- return (-1);
- }
-# endif /* TERMIOS_LDISC && NTTYDISC */
- return (0);
-#endif /* TERMIOS_TTY_DRIVER */
-
-#if !defined (NEW_TTY_DRIVER) && !defined (TERMIO_TTY_DRIVER) && !defined (TERMIOS_TTY_DRIVER)
- return (-1);
-#endif
-}
-
-/* Setup this shell to handle C-C, etc. */
-void
-initialize_job_signals ()
-{
- if (interactive)
- {
- set_signal_handler (SIGINT, sigint_sighandler);
- set_signal_handler (SIGTSTP, SIG_IGN);
- set_signal_handler (SIGTTOU, SIG_IGN);
- set_signal_handler (SIGTTIN, SIG_IGN);
- }
- else if (job_control)
- {
- old_tstp = set_signal_handler (SIGTSTP, sigstop_sighandler);
- old_ttin = set_signal_handler (SIGTTIN, sigstop_sighandler);
- old_ttou = set_signal_handler (SIGTTOU, sigstop_sighandler);
- }
- /* Leave disposition unmodified for non-interactive shells without job
- control. */
-}
-
-/* Here we handle CONT signals. */
-static sighandler
-sigcont_sighandler (sig)
- int sig;
-{
- initialize_job_signals ();
- set_signal_handler (SIGCONT, old_cont);
- kill (getpid (), SIGCONT);
-
- SIGRETURN (0);
-}
-
-/* Here we handle stop signals while we are running not as a login shell. */
-static sighandler
-sigstop_sighandler (sig)
- int sig;
-{
- set_signal_handler (SIGTSTP, old_tstp);
- set_signal_handler (SIGTTOU, old_ttou);
- set_signal_handler (SIGTTIN, old_ttin);
-
- old_cont = set_signal_handler (SIGCONT, sigcont_sighandler);
-
- give_terminal_to (shell_pgrp, 0);
-
- kill (getpid (), sig);
-
- SIGRETURN (0);
-}
-
-/* Give the terminal to PGRP. */
-int
-give_terminal_to (pgrp, force)
- pid_t pgrp;
- int force;
-{
- sigset_t set, oset;
- int r, e;
-
- r = 0;
- if (job_control || force)
- {
- sigemptyset (&set);
- sigaddset (&set, SIGTTOU);
- sigaddset (&set, SIGTTIN);
- sigaddset (&set, SIGTSTP);
- sigaddset (&set, SIGCHLD);
- sigemptyset (&oset);
- sigprocmask (SIG_BLOCK, &set, &oset);
-
- if (tcsetpgrp (shell_tty, pgrp) < 0)
- {
- /* Maybe we should print an error message? */
-#if 0
- sys_error ("tcsetpgrp(%d) failed: pid %ld to pgrp %ld",
- shell_tty, (long)getpid(), (long)pgrp);
-#endif
- r = -1;
- e = errno;
- }
- else
- terminal_pgrp = pgrp;
- sigprocmask (SIG_SETMASK, &oset, (sigset_t *)NULL);
- }
-
- if (r == -1)
- errno = e;
-
- return r;
-}
-
-/* Give terminal to NPGRP iff it's currently owned by OPGRP. FLAGS are the
- flags to pass to give_terminal_to(). */
-static int
-maybe_give_terminal_to (opgrp, npgrp, flags)
- pid_t opgrp, npgrp;
- int flags;
-{
- int tpgrp;
-
- tpgrp = tcgetpgrp (shell_tty);
- if (tpgrp < 0 && errno == ENOTTY)
- return -1;
- if (tpgrp == npgrp)
- {
- terminal_pgrp = npgrp;
- return 0;
- }
- else if (tpgrp != opgrp)
- {
-#if defined (DEBUG)
- internal_warning ("%d: maybe_give_terminal_to: terminal pgrp == %d shell pgrp = %d new pgrp = %d in_background = %d", (int)getpid(), tpgrp, opgrp, npgrp, running_in_background);
-#endif
- return -1;
- }
- else
- return (give_terminal_to (npgrp, flags));
-}
-
-/* Clear out any jobs in the job array. This is intended to be used by
- children of the shell, who should not have any job structures as baggage
- when they start executing (forking subshells for parenthesized execution
- and functions with pipes are the two that spring to mind). If RUNNING_ONLY
- is nonzero, only running jobs are removed from the table. */
-void
-delete_all_jobs (running_only)
- int running_only;
-{
- register int i;
- sigset_t set, oset;
-
- BLOCK_CHILD (set, oset);
-
- /* XXX - need to set j_lastj, j_firstj appropriately if running_only != 0. */
- if (js.j_jobslots)
- {
- js.j_current = js.j_previous = NO_JOB;
-
- /* XXX could use js.j_firstj here */
- for (i = 0; i < js.j_jobslots; i++)
- {
-#if defined (DEBUG)
- if (i < js.j_firstj && jobs[i])
- itrace("delete_all_jobs: job %d non-null before js.j_firstj (%d)", i, js.j_firstj);
- if (i > js.j_lastj && jobs[i])
- itrace("delete_all_jobs: job %d non-null after js.j_lastj (%d)", i, js.j_lastj);
-#endif
- if (jobs[i] && (running_only == 0 || (running_only && RUNNING(i))))
- delete_job (i, DEL_WARNSTOPPED);
- }
- if (running_only == 0)
- {
- free ((char *)jobs);
- js.j_jobslots = 0;
- js.j_firstj = js.j_lastj = js.j_njobs = 0;
- }
- }
-
- if (running_only == 0)
- bgp_clear ();
-
- UNBLOCK_CHILD (oset);
-}
-
-/* Mark all jobs in the job array so that they don't get a SIGHUP when the
- shell gets one. If RUNNING_ONLY is nonzero, mark only running jobs. */
-void
-nohup_all_jobs (running_only)
- int running_only;
-{
- register int i;
- sigset_t set, oset;
-
- BLOCK_CHILD (set, oset);
-
- if (js.j_jobslots)
- {
- /* XXX could use js.j_firstj here */
- for (i = 0; i < js.j_jobslots; i++)
- if (jobs[i] && (running_only == 0 || (running_only && RUNNING(i))))
- nohup_job (i);
- }
-
- UNBLOCK_CHILD (oset);
-}
-
-int
-count_all_jobs ()
-{
- int i, n;
- sigset_t set, oset;
-
- /* This really counts all non-dead jobs. */
- BLOCK_CHILD (set, oset);
- /* XXX could use js.j_firstj here */
- for (i = n = 0; i < js.j_jobslots; i++)
- {
-#if defined (DEBUG)
- if (i < js.j_firstj && jobs[i])
- itrace("count_all_jobs: job %d non-null before js.j_firstj (%d)", i, js.j_firstj);
- if (i > js.j_lastj && jobs[i])
- itrace("count_all_jobs: job %d non-null after js.j_lastj (%d)", i, js.j_lastj);
-#endif
- if (jobs[i] && DEADJOB(i) == 0)
- n++;
- }
- UNBLOCK_CHILD (oset);
- return n;
-}
-
-static void
-mark_all_jobs_as_dead ()
-{
- register int i;
- sigset_t set, oset;
-
- if (js.j_jobslots == 0)
- return;
-
- BLOCK_CHILD (set, oset);
-
- /* XXX could use js.j_firstj here */
- for (i = 0; i < js.j_jobslots; i++)
- if (jobs[i])
- {
- jobs[i]->state = JDEAD;
- js.j_ndead++;
- }
-
- UNBLOCK_CHILD (oset);
-}
-
-/* Mark all dead jobs as notified, so delete_job () cleans them out
- of the job table properly. POSIX.2 says we need to save the
- status of the last CHILD_MAX jobs, so we count the number of dead
- jobs and mark only enough as notified to save CHILD_MAX statuses. */
-static void
-mark_dead_jobs_as_notified (force)
- int force;
-{
- register int i, ndead, ndeadproc;
- sigset_t set, oset;
-
- if (js.j_jobslots == 0)
- return;
-
- BLOCK_CHILD (set, oset);
-
- /* If FORCE is non-zero, we don't have to keep CHILD_MAX statuses
- around; just run through the array. */
- if (force)
- {
- /* XXX could use js.j_firstj here */
- for (i = 0; i < js.j_jobslots; i++)
- {
- if (jobs[i] && DEADJOB (i) && (interactive_shell || (find_last_pid (i, 0) != last_asynchronous_pid)))
- jobs[i]->flags |= J_NOTIFIED;
- }
- UNBLOCK_CHILD (oset);
- return;
- }
-
- /* Mark enough dead jobs as notified to keep CHILD_MAX processes left in the
- array with the corresponding not marked as notified. This is a better
- way to avoid pid aliasing and reuse problems than keeping the POSIX-
- mandated CHILD_MAX jobs around. delete_job() takes care of keeping the
- bgpids list regulated. */
-
- /* Count the number of dead jobs */
- /* XXX could use js.j_firstj here */
- for (i = ndead = ndeadproc = 0; i < js.j_jobslots; i++)
- {
-#if defined (DEBUG)
- if (i < js.j_firstj && jobs[i])
- itrace("mark_dead_jobs_as_notified: job %d non-null before js.j_firstj (%d)", i, js.j_firstj);
- if (i > js.j_lastj && jobs[i])
- itrace("mark_dead_jobs_as_notified: job %d non-null after js.j_lastj (%d)", i, js.j_lastj);
-#endif
- if (jobs[i] && DEADJOB (i))
- {
- ndead++;
- ndeadproc += processes_in_job (i);
- }
- }
-
-#ifdef DEBUG
-# if 0
- if (ndeadproc != js.c_reaped)
- itrace("mark_dead_jobs_as_notified: ndeadproc (%d) != js.c_reaped (%d)", ndeadproc, js.c_reaped);
-# endif
- if (ndead != js.j_ndead)
- itrace("mark_dead_jobs_as_notified: ndead (%d) != js.j_ndead (%d)", ndead, js.j_ndead);
-#endif
-
- if (js.c_childmax < 0)
- js.c_childmax = getmaxchild ();
- if (js.c_childmax < 0)
- js.c_childmax = DEFAULT_CHILD_MAX;
-
- /* Don't do anything if the number of dead processes is less than CHILD_MAX
- and we're not forcing a cleanup. */
- if (ndeadproc <= js.c_childmax)
- {
- UNBLOCK_CHILD (oset);
- return;
- }
-
-#if 0
-itrace("mark_dead_jobs_as_notified: child_max = %d ndead = %d ndeadproc = %d", js.c_childmax, ndead, ndeadproc);
-#endif
-
- /* Mark enough dead jobs as notified that we keep CHILD_MAX jobs in
- the list. This isn't exactly right yet; changes need to be made
- to stop_pipeline so we don't mark the newer jobs after we've
- created CHILD_MAX slots in the jobs array. This needs to be
- integrated with a way to keep the jobs array from growing without
- bound. Maybe we wrap back around to 0 after we reach some max
- limit, and there are sufficient job slots free (keep track of total
- size of jobs array (js.j_jobslots) and running count of number of jobs
- in jobs array. Then keep a job index corresponding to the `oldest job'
- and start this loop there, wrapping around as necessary. In effect,
- we turn the list into a circular buffer. */
- /* XXX could use js.j_firstj here */
- for (i = 0; i < js.j_jobslots; i++)
- {
- if (jobs[i] && DEADJOB (i) && (interactive_shell || (find_last_pid (i, 0) != last_asynchronous_pid)))
- {
-#if defined (DEBUG)
- if (i < js.j_firstj && jobs[i])
- itrace("mark_dead_jobs_as_notified: job %d non-null before js.j_firstj (%d)", i, js.j_firstj);
- if (i > js.j_lastj && jobs[i])
- itrace("mark_dead_jobs_as_notified: job %d non-null after js.j_lastj (%d)", i, js.j_lastj);
-#endif
- /* If marking this job as notified would drop us down below
- child_max, don't mark it so we can keep at least child_max
- statuses. XXX -- need to check what Posix actually says
- about keeping statuses. */
- if ((ndeadproc -= processes_in_job (i)) <= js.c_childmax)
- break;
- jobs[i]->flags |= J_NOTIFIED;
- }
- }
-
- UNBLOCK_CHILD (oset);
-}
-
-/* Here to allow other parts of the shell (like the trap stuff) to
- freeze and unfreeze the jobs list. */
-int
-freeze_jobs_list ()
-{
- int o;
-
- o = jobs_list_frozen;
- jobs_list_frozen = 1;
- return o;
-}
-
-void
-unfreeze_jobs_list ()
-{
- jobs_list_frozen = 0;
-}
-
-/* Allow or disallow job control to take place. Returns the old value
- of job_control. */
-int
-set_job_control (arg)
- int arg;
-{
- int old;
-
- old = job_control;
- job_control = arg;
-
- if (terminal_pgrp == NO_PID)
- terminal_pgrp = tcgetpgrp (shell_tty);
-
- running_in_background = (terminal_pgrp != shell_pgrp);
-
-#if 0
- if (interactive_shell == 0 && running_in_background == 0 && job_control != old)
- {
- if (job_control)
- initialize_job_signals ();
- else
- default_tty_job_signals ();
- }
-#endif
-
- /* If we're turning on job control, reset pipeline_pgrp so make_child will
- put new child processes into the right pgrp */
- if (job_control != old && job_control)
- pipeline_pgrp = 0;
-
- return (old);
-}
-
-/* Turn off all traces of job control. This is run by children of the shell
- which are going to do shellsy things, like wait (), etc. */
-void
-without_job_control ()
-{
- stop_making_children ();
- start_pipeline ();
-#if defined (PGRP_PIPE)
- sh_closepipe (pgrp_pipe);
-#endif
- delete_all_jobs (0);
- set_job_control (0);
-}
-
-/* If this shell is interactive, terminate all stopped jobs and
- restore the original terminal process group. This is done
- before the `exec' builtin calls shell_execve. */
-void
-end_job_control ()
-{
- if (interactive_shell || job_control) /* XXX - should it be just job_control? */
- {
- terminate_stopped_jobs ();
-
- if (original_pgrp >= 0)
- give_terminal_to (original_pgrp, 1);
- }
-
- if (original_pgrp >= 0)
- setpgid (0, original_pgrp);
-}
-
-/* Restart job control by closing shell tty and reinitializing. This is
- called after an exec fails in an interactive shell and we do not exit. */
-void
-restart_job_control ()
-{
- if (shell_tty != -1)
- close (shell_tty);
- initialize_job_control (0);
-}
-
-void
-set_maxchild (nchild)
- int nchild;
-{
- static int lmaxchild = -1;
-
- if (lmaxchild < 0)
- lmaxchild = getmaxchild ();
- if (lmaxchild < 0)
- lmaxchild = DEFAULT_CHILD_MAX;
-
- /* Clamp value we set. Minimum is what Posix requires, maximum is defined
- above as MAX_CHILD_MAX. */
- if (nchild < lmaxchild)
- nchild = lmaxchild;
- else if (nchild > MAX_CHILD_MAX)
- nchild = MAX_CHILD_MAX;
-
- js.c_childmax = nchild;
-}
-
-/* Set the handler to run when the shell receives a SIGCHLD signal. */
-void
-set_sigchld_handler ()
-{
- set_signal_handler (SIGCHLD, sigchld_handler);
-}
-
-#if defined (PGRP_PIPE)
-/* Read from the read end of a pipe. This is how the process group leader
- blocks until all of the processes in a pipeline have been made. */
-static void
-pipe_read (pp)
- int *pp;
-{
- char ch;
-
- if (pp[1] >= 0)
- {
- close (pp[1]);
- pp[1] = -1;
- }
-
- if (pp[0] >= 0)
- {
- while (read (pp[0], &ch, 1) == -1 && errno == EINTR)
- ;
- }
-}
-
-/* Functional interface closes our local-to-job-control pipes. */
-void
-close_pgrp_pipe ()
-{
- sh_closepipe (pgrp_pipe);
-}
-
-void
-save_pgrp_pipe (p, clear)
- int *p;
- int clear;
-{
- p[0] = pgrp_pipe[0];
- p[1] = pgrp_pipe[1];
- if (clear)
- pgrp_pipe[0] = pgrp_pipe[1] = -1;
-}
-
-void
-restore_pgrp_pipe (p)
- int *p;
-{
- pgrp_pipe[0] = p[0];
- pgrp_pipe[1] = p[1];
-}
-
-#endif /* PGRP_PIPE */
+++ /dev/null
-/* 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 <http://www.gnu.org/licenses/>.
-*/
-
-#define READLINE_LIBRARY
-
-#if defined (__TANDEM)
-# include <floss.h>
-#endif
-
-#if defined (HAVE_CONFIG_H)
-# include <config.h>
-#endif
-
-#include <stdio.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#if defined (HAVE_SYS_FILE_H)
-# include <sys/file.h>
-#endif /* HAVE_SYS_FILE_H */
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-
-#if defined (HAVE_STDLIB_H)
-# include <stdlib.h>
-#else
-# include "ansi_stdlib.h"
-#endif /* HAVE_STDLIB_H */
-
-#include <errno.h>
-
-#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';
- value++; /* skip past the quote */
- }
- 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-completion-prefix",&_rl_colored_completion_prefix, 0 },
- { "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-bracketed-paste", &_rl_enable_bracketed_paste, 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 },
- { "show-mode-in-prompt", &_rl_show_mode_in_prompt, 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;
- }
- else if (_rl_stricmp (name, "show-mode-in-prompt") == 0)
- _rl_reset_prompt ();
-}
-
-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_emacs_modestr 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 int sv_viins_modestr PARAMS((const char *));
-static int sv_vicmd_modestr 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 },
- { "emacs-mode-string", V_STRING, sv_emacs_modestr },
- { "history-size", V_INT, sv_histsize },
- { "isearch-terminators", V_STRING, sv_isrchterm },
- { "keymap", V_STRING, sv_keymap },
- { "keyseq-timeout", V_INT, sv_seqtimeout },
- { "vi-cmd-mode-string", V_STRING, sv_vicmd_modestr },
- { "vi-ins-mode-string", V_STRING, sv_viins_modestr },
- { (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-insensitive), 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)
- {
- unstifle_history ();
- return 0;
- }
- }
- 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;
-}
-
-extern char *_rl_emacs_mode_str;
-
-static int
-sv_emacs_modestr (value)
- const char *value;
-{
- if (value && *value)
- {
- FREE (_rl_emacs_mode_str);
- _rl_emacs_mode_str = (char *)xmalloc (2 * strlen (value) + 1);
- rl_translate_keyseq (value, _rl_emacs_mode_str, &_rl_emacs_modestr_len);
- _rl_emacs_mode_str[_rl_emacs_modestr_len] = '\0';
- return 0;
- }
- else if (value)
- {
- FREE (_rl_emacs_mode_str);
- _rl_emacs_mode_str = (char *)xmalloc (1);
- _rl_emacs_mode_str[_rl_emacs_modestr_len = 0] = '\0';
- return 0;
- }
- else if (value == 0)
- {
- FREE (_rl_emacs_mode_str);
- _rl_emacs_mode_str = 0; /* prompt_modestr does the right thing */
- _rl_emacs_modestr_len = 0;
- return 0;
- }
- return 1;
-}
-
-static int
-sv_viins_modestr (value)
- const char *value;
-{
- if (value && *value)
- {
- FREE (_rl_vi_ins_mode_str);
- _rl_vi_ins_mode_str = (char *)xmalloc (2 * strlen (value) + 1);
- rl_translate_keyseq (value, _rl_vi_ins_mode_str, &_rl_vi_ins_modestr_len);
- _rl_vi_ins_mode_str[_rl_vi_ins_modestr_len] = '\0';
- return 0;
- }
- else if (value)
- {
- FREE (_rl_vi_ins_mode_str);
- _rl_vi_ins_mode_str = (char *)xmalloc (1);
- _rl_vi_ins_mode_str[_rl_vi_ins_modestr_len = 0] = '\0';
- return 0;
- }
- else if (value == 0)
- {
- FREE (_rl_vi_ins_mode_str);
- _rl_vi_ins_mode_str = 0; /* prompt_modestr does the right thing */
- _rl_vi_ins_modestr_len = 0;
- return 0;
- }
- return 1;
-}
-
-static int
-sv_vicmd_modestr (value)
- const char *value;
-{
- if (value && *value)
- {
- FREE (_rl_vi_cmd_mode_str);
- _rl_vi_cmd_mode_str = (char *)xmalloc (2 * strlen (value) + 1);
- rl_translate_keyseq (value, _rl_vi_cmd_mode_str, &_rl_vi_cmd_modestr_len);
- _rl_vi_cmd_mode_str[_rl_vi_cmd_modestr_len] = '\0';
- return 0;
- }
- else if (value)
- {
- FREE (_rl_vi_cmd_mode_str);
- _rl_vi_cmd_mode_str = (char *)xmalloc (1);
- _rl_vi_cmd_mode_str[_rl_vi_cmd_modestr_len = 0] = '\0';
- return 0;
- }
- else if (value == 0)
- {
- FREE (_rl_vi_cmd_mode_str);
- _rl_vi_cmd_mode_str = 0; /* prompt_modestr does the right thing */
- _rl_vi_cmd_modestr_len = 0;
- return 0;
- }
- return 1;
-}
-
-/* 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 if (_rl_stricmp (name, "keyseq-timeout") == 0)
- {
- sprintf (numbuf, "%d", _rl_keyseq_timeout);
- return (numbuf);
- }
- else if (_rl_stricmp (name, "emacs-mode-string") == 0)
- return (_rl_emacs_mode_str ? _rl_emacs_mode_str : RL_EMACS_MODESTR_DEFAULT);
- else if (_rl_stricmp (name, "vi-cmd-mode-string") == 0)
- return (_rl_emacs_mode_str ? _rl_emacs_mode_str : RL_VI_CMD_MODESTR_DEFAULT);
- else if (_rl_stricmp (name, "vi-ins-mode-string") == 0)
- return (_rl_emacs_mode_str ? _rl_emacs_mode_str : RL_VI_INS_MODESTR_DEFAULT);
- 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);
-}
+++ /dev/null
-/* chardefs.h -- Character definitions for readline. */
-
-/* Copyright (C) 1994-2009 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 <http://www.gnu.org/licenses/>.
-*/
-
-#ifndef _CHARDEFS_H_
-#define _CHARDEFS_H_
-
-#include <ctype.h>
-
-#if defined (HAVE_CONFIG_H)
-# if defined (HAVE_STRING_H)
-# if ! defined (STDC_HEADERS) && defined (HAVE_MEMORY_H)
-# include <memory.h>
-# endif
-# include <string.h>
-# endif /* HAVE_STRING_H */
-# if defined (HAVE_STRINGS_H)
-# include <strings.h>
-# endif /* HAVE_STRINGS_H */
-#else
-# include <string.h>
-#endif /* !HAVE_CONFIG_H */
-
-#ifndef whitespace
-#define whitespace(c) (((c) == ' ') || ((c) == '\t'))
-#endif
-
-#ifdef CTRL
-# undef CTRL
-#endif
-#ifdef UNCTRL
-# undef UNCTRL
-#endif
-
-/* Some character stuff. */
-#define control_character_threshold 0x020 /* Smaller than this is control. */
-#define control_character_mask 0x1f /* 0x20 - 1 */
-#define meta_character_threshold 0x07f /* Larger than this is Meta. */
-#define control_character_bit 0x40 /* 0x000000, must be off. */
-#define meta_character_bit 0x080 /* x0000000, must be on. */
-#define largest_char 255 /* Largest character value. */
-
-#define CTRL_CHAR(c) ((c) < control_character_threshold && (((c) & 0x80) == 0))
-#define META_CHAR(c) ((c) > meta_character_threshold && (c) <= largest_char)
-
-#define CTRL(c) ((c) & control_character_mask)
-#define META(c) ((c) | meta_character_bit)
-
-#define UNMETA(c) ((c) & (~meta_character_bit))
-#define UNCTRL(c) _rl_to_upper(((c)|control_character_bit))
-
-#if defined STDC_HEADERS || (!defined (isascii) && !defined (HAVE_ISASCII))
-# define IN_CTYPE_DOMAIN(c) 1
-#else
-# define IN_CTYPE_DOMAIN(c) isascii(c)
-#endif
-
-#if !defined (isxdigit) && !defined (HAVE_ISXDIGIT) && !defined (__cplusplus)
-# define isxdigit(c) (isdigit((c)) || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F'))
-#endif
-
-#if defined (CTYPE_NON_ASCII)
-# define NON_NEGATIVE(c) 1
-#else
-# define NON_NEGATIVE(c) ((unsigned char)(c) == (c))
-#endif
-
-/* Some systems define these; we want our definitions. */
-#undef ISPRINT
-
-/* Beware: these only work with single-byte ASCII characters. */
-
-#define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c))
-#define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
-#define ISDIGIT(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
-#define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c))
-#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
-#define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
-#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
-
-#define _rl_lowercase_p(c) (NON_NEGATIVE(c) && ISLOWER(c))
-#define _rl_uppercase_p(c) (NON_NEGATIVE(c) && ISUPPER(c))
-#define _rl_digit_p(c) ((c) >= '0' && (c) <= '9')
-
-#define _rl_pure_alphabetic(c) (NON_NEGATIVE(c) && ISALPHA(c))
-#define ALPHABETIC(c) (NON_NEGATIVE(c) && ISALNUM(c))
-
-#ifndef _rl_to_upper
-# define _rl_to_upper(c) (_rl_lowercase_p(c) ? toupper((unsigned char)c) : (c))
-# define _rl_to_lower(c) (_rl_uppercase_p(c) ? tolower((unsigned char)c) : (c))
-#endif
-
-#ifndef _rl_digit_value
-# define _rl_digit_value(x) ((x) - '0')
-#endif
-
-#ifndef _rl_isident
-# define _rl_isident(c) (ISALNUM(c) || (c) == '_')
-#endif
-
-#ifndef ISOCTAL
-# define ISOCTAL(c) ((c) >= '0' && (c) <= '7')
-#endif
-#define OCTVALUE(c) ((c) - '0')
-
-#define HEXVALUE(c) \
- (((c) >= 'a' && (c) <= 'f') \
- ? (c)-'a'+10 \
- : (c) >= 'A' && (c) <= 'F' ? (c)-'A'+10 : (c)-'0')
-
-#ifndef NEWLINE
-#define NEWLINE '\n'
-#endif
-
-#ifndef RETURN
-#define RETURN CTRL('M')
-#endif
-
-#ifndef RUBOUT
-#define RUBOUT 0x7f
-#endif
-
-#ifndef TAB
-#define TAB '\t'
-#endif
-
-#ifdef ABORT_CHAR
-#undef ABORT_CHAR
-#endif
-#define ABORT_CHAR CTRL('G')
-
-#ifdef PAGE
-#undef PAGE
-#endif
-#define PAGE CTRL('L')
-
-#ifdef SPACE
-#undef SPACE
-#endif
-#define SPACE ' ' /* XXX - was 0x20 */
-
-#ifdef ESC
-#undef ESC
-#endif
-#define ESC CTRL('[')
-
-#endif /* _CHARDEFS_H_ */
+++ /dev/null
-# 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
+++ /dev/null
-@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--2014 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} (the default), Readline attempts to bind the control
-characters treated specially by the kernel's terminal driver to their
-Readline equivalents.
-
-@item blink-matching-paren
-@vindex blink-matching-paren
-If set to @samp{on}, Readline attempts to briefly move the cursor to an
-opening parenthesis when a closing parenthsis is inserted. The default
-is @samp{off}.
-
-@item colored-completion-prefix
-@vindex colored-completion-prefix
-If set to @samp{on}, when listing completions, Readline displays the
-common prefix of the set of possible completions using a different color.
-The color definitions are taken from the value of the @env{LS_COLORS}
-environment variable.
-The default is @samp{off}.
-
-@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 emacs-mode-string
-@vindex emacs-mode-string
-This string is displayed immediately before the last line of the primary
-prompt when emacs editing mode is active. The value is expanded like a
-key binding, so the standard set of meta- and control prefixes and
-backslash escape sequences is available.
-Use the @samp{\1} and @samp{\2} escapes to begin and end sequences of
-non-printing characters, which can be used to embed a terminal control
-sequence into the mode string.
-The default is @samp{@@}.
-
-@item echo-control-characters
-@vindex 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-bracketed-paste
-@vindex enable-bracketed-paste
-When set to @samp{On}, Readline will configure the terminal in a way
-that will enable it to insert each paste into the editing buffer as a
-single string of characters, instead of treating each character as if
-it had been read from the keyboard. This can prevent pasted characters
-from being interpreted as editing commands. The default is @samp{off}.
-
-@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, any existing history entries are deleted and no new entries
-are saved.
-If set to a value less than zero, the number of history entries is not
-limited.
-By default, the number of history entries 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 keyseq-timeout
-Specifies the duration Readline 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, Readline will use the shorter
-but complete key sequence.
-Readline uses this value to determine whether or not input is
-available on the current input source (@code{rl_instream} by default).
-The value is specified in milliseconds, so a value of 1000 means that
-Readline 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, Readline will wait until another key is pressed to
-decide which key sequence to complete.
-The default value is @code{500}.
-
-@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 show-mode-in-prompt
-@vindex show-mode-in-prompt
-If set to @samp{on}, add a character to the beginning of the prompt
-indicating the editing mode: emacs, vi command, or vi insertion.
-The mode strings are user-settable.
-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 vi-cmd-mode-string
-@vindex vi-cmd-mode-string
-This string is displayed immediately before the last line of the primary
-prompt when vi editing mode is active and in command mode.
-The value is expanded like a
-key binding, so the standard set of meta- and control prefixes and
-backslash escape sequences is available.
-Use the @samp{\1} and @samp{\2} escapes to begin and end sequences of
-non-printing characters, which can be used to embed a terminal control
-sequence into the mode string.
-The default is @samp{(cmd)}.
-
-@item vi-ins-mode-string
-@vindex vi-ins-mode-string
-This string is displayed immediately before the last line of the primary
-prompt when vi editing mode is active and in insertion mode.
-The value is expanded like a
-key binding, so the standard set of meta- and control prefixes and
-backslash escape sequences is available.
-Use the @samp{\1} and @samp{\2} escapes to begin and end sequences of
-non-printing characters, which can be used to embed a terminal control
-sequence into the mode string.
-The default is @samp{(ins)}.
-
-@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 system-wide 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 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.
-The search string may match anywhere in a history line.
-
-@item non-incremental-forward-search-history (M-n)
-Search forward starting at the current line and moving `down'
-through the history as necessary using a non-incremental search
-for a string supplied by the user.
-The search string may match anywhere in a history line.
-
-@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 @i{end-of-file} (usually C-d)
-The character indicating end-of-file as set, for example, by
-@code{stty}. If this character is read when there are no characters
-on the line, and point is at the beginning of the line, Readline
-interprets it as the end of input and returns @sc{eof}.
-
-@item delete-char (C-d)
-Delete the character at point. If this function is bound to the
-same character as the tty @sc{eof} character, as @kbd{C-d}
-commonly is, see above for the effects.
-
-@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 bracketed-paste-begin ()
-This function is intended to be bound to the "bracketed paste" escape
-sequence sent by some terminals, and such a binding is assigned by default.
-It allows Readline to insert the pasted text as a single unit without treating
-each character as if it had been read from the keyboard. The characters
-are inserted as if each one was bound to @code{self-insert}) instead of
-executing any editing commands.
-
-@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 from the cursor to the beginning of the current 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 nor 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.
-If the @code{nocasematch} shell option
-(see the description of @code{shopt} in @ref{The Shopt Builtin})
-is enabled, the match is performed without regard to the case
-of alphabetic characters.
-
-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 -o bashdefault -o default
-@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
+++ /dev/null
-/* funmap.c -- attach names to functions. */
-
-/* Copyright (C) 1987-2010 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 <http://www.gnu.org/licenses/>.
-*/
-
-#define READLINE_LIBRARY
-
-#if defined (HAVE_CONFIG_H)
-# include <config.h>
-#endif
-
-#if !defined (BUFSIZ)
-#include <stdio.h>
-#endif /* BUFSIZ */
-
-#if defined (HAVE_STDLIB_H)
-# include <stdlib.h>
-#else
-# include "ansi_stdlib.h"
-#endif /* HAVE_STDLIB_H */
-
-#include "rlconf.h"
-#include "readline.h"
-
-#include "xmalloc.h"
-
-#ifdef __STDC__
-typedef int QSFUNC (const void *, const void *);
-#else
-typedef int QSFUNC ();
-#endif
-
-extern int _rl_qsort_string_compare PARAMS((char **, char **));
-
-FUNMAP **funmap;
-static int funmap_size;
-static int funmap_entry;
-
-/* After initializing the function map, this is the index of the first
- program specific function. */
-int funmap_program_specific_entry_start;
-
-static const FUNMAP default_funmap[] = {
- { "abort", rl_abort },
- { "accept-line", rl_newline },
- { "arrow-key-prefix", rl_arrow_keys },
- { "backward-byte", rl_backward_byte },
- { "backward-char", rl_backward_char },
- { "backward-delete-char", rl_rubout },
- { "backward-kill-line", rl_backward_kill_line },
- { "backward-kill-word", rl_backward_kill_word },
- { "backward-word", rl_backward_word },
- { "beginning-of-history", rl_beginning_of_history },
- { "beginning-of-line", rl_beg_of_line },
- { "bracketed-paste-begin", rl_bracketed_paste_begin },
- { "call-last-kbd-macro", rl_call_last_kbd_macro },
- { "capitalize-word", rl_capitalize_word },
- { "character-search", rl_char_search },
- { "character-search-backward", rl_backward_char_search },
- { "clear-screen", rl_clear_screen },
- { "complete", rl_complete },
- { "copy-backward-word", rl_copy_backward_word },
- { "copy-forward-word", rl_copy_forward_word },
- { "copy-region-as-kill", rl_copy_region_to_kill },
- { "delete-char", rl_delete },
- { "delete-char-or-list", rl_delete_or_show_completions },
- { "delete-horizontal-space", rl_delete_horizontal_space },
- { "digit-argument", rl_digit_argument },
- { "do-lowercase-version", rl_do_lowercase_version },
- { "downcase-word", rl_downcase_word },
- { "dump-functions", rl_dump_functions },
- { "dump-macros", rl_dump_macros },
- { "dump-variables", rl_dump_variables },
- { "emacs-editing-mode", rl_emacs_editing_mode },
- { "end-kbd-macro", rl_end_kbd_macro },
- { "end-of-history", rl_end_of_history },
- { "end-of-line", rl_end_of_line },
- { "exchange-point-and-mark", rl_exchange_point_and_mark },
- { "forward-backward-delete-char", rl_rubout_or_delete },
- { "forward-byte", rl_forward_byte },
- { "forward-char", rl_forward_char },
- { "forward-search-history", rl_forward_search_history },
- { "forward-word", rl_forward_word },
- { "history-search-backward", rl_history_search_backward },
- { "history-search-forward", rl_history_search_forward },
- { "history-substring-search-backward", rl_history_substr_search_backward },
- { "history-substring-search-forward", rl_history_substr_search_forward },
- { "insert-comment", rl_insert_comment },
- { "insert-completions", rl_insert_completions },
- { "kill-whole-line", rl_kill_full_line },
- { "kill-line", rl_kill_line },
- { "kill-region", rl_kill_region },
- { "kill-word", rl_kill_word },
- { "menu-complete", rl_menu_complete },
- { "menu-complete-backward", rl_backward_menu_complete },
- { "next-history", rl_get_next_history },
- { "non-incremental-forward-search-history", rl_noninc_forward_search },
- { "non-incremental-reverse-search-history", rl_noninc_reverse_search },
- { "non-incremental-forward-search-history-again", rl_noninc_forward_search_again },
- { "non-incremental-reverse-search-history-again", rl_noninc_reverse_search_again },
- { "old-menu-complete", rl_old_menu_complete },
- { "overwrite-mode", rl_overwrite_mode },
-#if defined (_WIN32)
- { "paste-from-clipboard", rl_paste_from_clipboard },
-#endif
- { "possible-completions", rl_possible_completions },
- { "previous-history", rl_get_previous_history },
- { "print-last-kbd-macro", rl_print_last_kbd_macro },
- { "quoted-insert", rl_quoted_insert },
- { "re-read-init-file", rl_re_read_init_file },
- { "redraw-current-line", rl_refresh_line},
- { "reverse-search-history", rl_reverse_search_history },
- { "revert-line", rl_revert_line },
- { "self-insert", rl_insert },
- { "set-mark", rl_set_mark },
- { "skip-csi-sequence", rl_skip_csi_sequence },
- { "start-kbd-macro", rl_start_kbd_macro },
- { "tab-insert", rl_tab_insert },
- { "tilde-expand", rl_tilde_expand },
- { "transpose-chars", rl_transpose_chars },
- { "transpose-words", rl_transpose_words },
- { "tty-status", rl_tty_status },
- { "undo", rl_undo_command },
- { "universal-argument", rl_universal_argument },
- { "unix-filename-rubout", rl_unix_filename_rubout },
- { "unix-line-discard", rl_unix_line_discard },
- { "unix-word-rubout", rl_unix_word_rubout },
- { "upcase-word", rl_upcase_word },
- { "yank", rl_yank },
- { "yank-last-arg", rl_yank_last_arg },
- { "yank-nth-arg", rl_yank_nth_arg },
- { "yank-pop", rl_yank_pop },
-
-#if defined (VI_MODE)
- { "vi-append-eol", rl_vi_append_eol },
- { "vi-append-mode", rl_vi_append_mode },
- { "vi-arg-digit", rl_vi_arg_digit },
- { "vi-back-to-indent", rl_vi_back_to_indent },
- { "vi-backward-bigword", rl_vi_bWord },
- { "vi-backward-word", rl_vi_bword },
- { "vi-bWord", rl_vi_bWord },
- { "vi-bword", rl_vi_bword },
- { "vi-change-case", rl_vi_change_case },
- { "vi-change-char", rl_vi_change_char },
- { "vi-change-to", rl_vi_change_to },
- { "vi-char-search", rl_vi_char_search },
- { "vi-column", rl_vi_column },
- { "vi-complete", rl_vi_complete },
- { "vi-delete", rl_vi_delete },
- { "vi-delete-to", rl_vi_delete_to },
- { "vi-eWord", rl_vi_eWord },
- { "vi-editing-mode", rl_vi_editing_mode },
- { "vi-end-bigword", rl_vi_eWord },
- { "vi-end-word", rl_vi_end_word },
- { "vi-eof-maybe", rl_vi_eof_maybe },
- { "vi-eword", rl_vi_eword },
- { "vi-fWord", rl_vi_fWord },
- { "vi-fetch-history", rl_vi_fetch_history },
- { "vi-first-print", rl_vi_first_print },
- { "vi-forward-bigword", rl_vi_fWord },
- { "vi-forward-word", rl_vi_fword },
- { "vi-fword", rl_vi_fword },
- { "vi-goto-mark", rl_vi_goto_mark },
- { "vi-insert-beg", rl_vi_insert_beg },
- { "vi-insertion-mode", rl_vi_insertion_mode },
- { "vi-match", rl_vi_match },
- { "vi-movement-mode", rl_vi_movement_mode },
- { "vi-next-word", rl_vi_next_word },
- { "vi-overstrike", rl_vi_overstrike },
- { "vi-overstrike-delete", rl_vi_overstrike_delete },
- { "vi-prev-word", rl_vi_prev_word },
- { "vi-put", rl_vi_put },
- { "vi-redo", rl_vi_redo },
- { "vi-replace", rl_vi_replace },
- { "vi-rubout", rl_vi_rubout },
- { "vi-search", rl_vi_search },
- { "vi-search-again", rl_vi_search_again },
- { "vi-set-mark", rl_vi_set_mark },
- { "vi-subst", rl_vi_subst },
- { "vi-tilde-expand", rl_vi_tilde_expand },
- { "vi-yank-arg", rl_vi_yank_arg },
- { "vi-yank-to", rl_vi_yank_to },
-#endif /* VI_MODE */
-
- {(char *)NULL, (rl_command_func_t *)NULL }
-};
-
-int
-rl_add_funmap_entry (name, function)
- const char *name;
- rl_command_func_t *function;
-{
- if (funmap_entry + 2 >= funmap_size)
- {
- funmap_size += 64;
- funmap = (FUNMAP **)xrealloc (funmap, funmap_size * sizeof (FUNMAP *));
- }
-
- funmap[funmap_entry] = (FUNMAP *)xmalloc (sizeof (FUNMAP));
- funmap[funmap_entry]->name = name;
- funmap[funmap_entry]->function = function;
-
- funmap[++funmap_entry] = (FUNMAP *)NULL;
- return funmap_entry;
-}
-
-static int funmap_initialized;
-
-/* Make the funmap contain all of the default entries. */
-void
-rl_initialize_funmap ()
-{
- register int i;
-
- if (funmap_initialized)
- return;
-
- for (i = 0; default_funmap[i].name; i++)
- rl_add_funmap_entry (default_funmap[i].name, default_funmap[i].function);
-
- funmap_initialized = 1;
- funmap_program_specific_entry_start = i;
-}
-
-/* Produce 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 when you done, but not the pointers. */
-const char **
-rl_funmap_names ()
-{
- const char **result;
- int result_size, result_index;
-
- /* Make sure that the function map has been initialized. */
- rl_initialize_funmap ();
-
- for (result_index = result_size = 0, result = (const char **)NULL; funmap[result_index]; result_index++)
- {
- if (result_index + 2 > result_size)
- {
- result_size += 20;
- result = (const char **)xrealloc (result, result_size * sizeof (char *));
- }
-
- result[result_index] = funmap[result_index]->name;
- result[result_index + 1] = (char *)NULL;
- }
-
- qsort (result, result_index, sizeof (char *), (QSFUNC *)_rl_qsort_string_compare);
- return (result);
-}
+++ /dev/null
-/* histfile.c - functions to manipulate the history file. */
-
-/* Copyright (C) 1989-2010 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 <http://www.gnu.org/licenses/>.
-*/
-
-/* 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 (__TANDEM)
-# include <floss.h>
-#endif
-
-#if defined (HAVE_CONFIG_H)
-# include <config.h>
-#endif
-
-#include <stdio.h>
-
-#include <sys/types.h>
-#if ! defined (_MINIX) && defined (HAVE_SYS_FILE_H)
-# include <sys/file.h>
-#endif
-#include "posixstat.h"
-#include <fcntl.h>
-
-#if defined (HAVE_STDLIB_H)
-# include <stdlib.h>
-#else
-# include "ansi_stdlib.h"
-#endif /* HAVE_STDLIB_H */
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
-
-#include <ctype.h>
-
-#if defined (__EMX__)
-# undef HAVE_MMAP
-#endif
-
-#ifdef HISTORY_USE_MMAP
-# include <sys/mman.h>
-
-# ifdef MAP_FILE
-# define MAP_RFLAGS (MAP_FILE|MAP_PRIVATE)
-# define MAP_WFLAGS (MAP_FILE|MAP_SHARED)
-# else
-# define MAP_RFLAGS MAP_PRIVATE
-# define MAP_WFLAGS MAP_SHARED
-# endif
-
-# ifndef MAP_FAILED
-# define MAP_FAILED ((void *)-1)
-# endif
-
-#endif /* HISTORY_USE_MMAP */
-
-/* If we're compiling for __EMX__ (OS/2) or __CYGWIN__ (cygwin32 environment
- on win 95/98/nt), we want to open files with O_BINARY mode so that there
- is no \n -> \r\n conversion performed. On other systems, we don't want to
- mess around with O_BINARY at all, so we ensure that it's defined to 0. */
-#if defined (__EMX__) || defined (__CYGWIN__)
-# ifndef O_BINARY
-# define O_BINARY 0
-# endif
-#else /* !__EMX__ && !__CYGWIN__ */
-# undef O_BINARY
-# define O_BINARY 0
-#endif /* !__EMX__ && !__CYGWIN__ */
-
-#include <errno.h>
-#if !defined (errno)
-extern int errno;
-#endif /* !errno */
-
-#include "history.h"
-#include "histlib.h"
-
-#include "rlshell.h"
-#include "xmalloc.h"
-
-/* If non-zero, we write timestamps to the history file in history_do_write() */
-int history_write_timestamps = 0;
-
-/* Immediately after a call to read_history() or read_history_range(), this
- will return the number of lines just read from the history file in that
- call. */
-int history_lines_read_from_file = 0;
-
-/* Immediately after a call to write_history() or history_do_write(), this
- will return the number of lines just written to the history file in that
- call. This also works with history_truncate_file. */
-int history_lines_written_to_file = 0;
-
-/* Does S look like the beginning of a history timestamp entry? Placeholder
- for more extensive tests. */
-#define HIST_TIMESTAMP_START(s) (*(s) == history_comment_char && isdigit ((s)[1]) )
-
-/* Return the string that should be used in the place of this
- filename. This only matters when you don't specify the
- filename to read_history (), or write_history (). */
-static char *
-history_filename (filename)
- const char *filename;
-{
- char *return_val;
- const char *home;
- int home_len;
-
- return_val = filename ? savestring (filename) : (char *)NULL;
-
- if (return_val)
- return (return_val);
-
- home = sh_get_env_value ("HOME");
-#if defined (_WIN32)
- if (home == 0)
- home = sh_get_env_value ("APPDATA");
-#endif
-
- if (home == 0)
- return (NULL);
- else
- home_len = strlen (home);
-
- return_val = (char *)xmalloc (2 + home_len + 8); /* strlen(".history") == 8 */
- strcpy (return_val, home);
- return_val[home_len] = '/';
-#if defined (__MSDOS__)
- strcpy (return_val + home_len + 1, "_history");
-#else
- strcpy (return_val + home_len + 1, ".history");
-#endif
-
- return (return_val);
-}
-
-static char *
-history_backupfile (filename)
- const char *filename;
-{
- char *ret;
- size_t len;
-
- len = strlen (filename);
- ret = xmalloc (len + 2);
- strcpy (ret, filename);
- ret[len] = '-';
- ret[len+1] = '\0';
- return ret;
-}
-
-/* Add the contents of FILENAME to the history list, a line at a time.
- If FILENAME is NULL, then read from ~/.history. Returns 0 if
- successful, or errno if not. */
-int
-read_history (filename)
- const char *filename;
-{
- return (read_history_range (filename, 0, -1));
-}
-
-/* Read a range of lines from FILENAME, adding them to the history list.
- Start reading at the FROM'th line and end at the TO'th. If FROM
- is zero, start at the beginning. If TO is less than FROM, read
- until the end of the file. If FILENAME is NULL, then read from
- ~/.history. Returns 0 if successful, or errno if not. */
-int
-read_history_range (filename, from, to)
- const char *filename;
- int from, to;
-{
- register char *line_start, *line_end, *p;
- char *input, *buffer, *bufend, *last_ts;
- int file, current_line, chars_read;
- struct stat finfo;
- size_t file_size;
-#if defined (EFBIG)
- int overflow_errno = EFBIG;
-#elif defined (EOVERFLOW)
- int overflow_errno = EOVERFLOW;
-#else
- int overflow_errno = EIO;
-#endif
-
- history_lines_read_from_file = 0;
-
- buffer = last_ts = (char *)NULL;
- input = history_filename (filename);
- file = input ? open (input, O_RDONLY|O_BINARY, 0666) : -1;
-
- if ((file < 0) || (fstat (file, &finfo) == -1))
- goto error_and_exit;
-
- 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)
- {
- errno = overflow_errno;
- goto error_and_exit;
- }
-
-#ifdef HISTORY_USE_MMAP
- /* We map read/write and private so we can change newlines to NULs without
- affecting the underlying object. */
- buffer = (char *)mmap (0, file_size, PROT_READ|PROT_WRITE, MAP_RFLAGS, file, 0);
- if ((void *)buffer == MAP_FAILED)
- {
- errno = overflow_errno;
- goto error_and_exit;
- }
- chars_read = file_size;
-#else
- buffer = (char *)malloc (file_size + 1);
- if (buffer == 0)
- {
- errno = overflow_errno;
- goto error_and_exit;
- }
-
- chars_read = read (file, buffer, file_size);
-#endif
- if (chars_read < 0)
- {
- error_and_exit:
- if (errno != 0)
- chars_read = errno;
- else
- chars_read = EIO;
- if (file >= 0)
- close (file);
-
- FREE (input);
-#ifndef HISTORY_USE_MMAP
- FREE (buffer);
-#endif
-
- return (chars_read);
- }
-
- close (file);
-
- /* Set TO to larger than end of file if negative. */
- if (to < 0)
- to = chars_read;
-
- /* Start at beginning of file, work to end. */
- bufend = buffer + chars_read;
- current_line = 0;
-
- /* Skip lines until we are at FROM. */
- for (line_start = line_end = buffer; line_end < bufend && current_line < from; line_end++)
- if (*line_end == '\n')
- {
- p = line_end + 1;
- /* If we see something we think is a timestamp, continue with this
- line. We should check more extensively here... */
- if (HIST_TIMESTAMP_START(p) == 0)
- current_line++;
- line_start = p;
- }
-
- /* If there are lines left to gobble, then gobble them now. */
- for (line_end = line_start; line_end < bufend; line_end++)
- if (*line_end == '\n')
- {
- /* Change to allow Windows-like \r\n end of line delimiter. */
- if (line_end > line_start && line_end[-1] == '\r')
- line_end[-1] = '\0';
- else
- *line_end = '\0';
-
- if (*line_start)
- {
- if (HIST_TIMESTAMP_START(line_start) == 0)
- {
- add_history (line_start);
- if (last_ts)
- {
- add_history_time (last_ts);
- last_ts = NULL;
- }
- }
- else
- {
- last_ts = line_start;
- current_line--;
- }
- }
-
- current_line++;
-
- if (current_line >= to)
- break;
-
- line_start = line_end + 1;
- }
-
- history_lines_read_from_file = current_line;
-
- FREE (input);
-#ifndef HISTORY_USE_MMAP
- FREE (buffer);
-#else
- munmap (buffer, file_size);
-#endif
-
- return (0);
-}
-
-/* Truncate the history file FNAME, leaving only LINES trailing lines.
- If FNAME is NULL, then use ~/.history. Returns 0 on success, errno
- on failure. */
-int
-history_truncate_file (fname, lines)
- const char *fname;
- int lines;
-{
- char *buffer, *filename, *bakname, *bp, *bp1; /* bp1 == bp+1 */
- int file, chars_read, rv, orig_lines, exists;
- struct stat finfo;
- size_t file_size;
-
- history_lines_written_to_file = 0;
-
- buffer = (char *)NULL;
- filename = history_filename (fname);
- bakname = 0;
- file = filename ? open (filename, O_RDONLY|O_BINARY, 0666) : -1;
- rv = exists = 0;
-
- /* Don't try to truncate non-regular files. */
- if (file == -1 || fstat (file, &finfo) == -1)
- {
- rv = errno;
- if (file != -1)
- close (file);
- goto truncate_exit;
- }
- exists = 1;
-
- if (S_ISREG (finfo.st_mode) == 0)
- {
- close (file);
-#ifdef EFTYPE
- rv = EFTYPE;
-#else
- rv = EINVAL;
-#endif
- goto truncate_exit;
- }
-
- 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)
- {
- close (file);
-#if defined (EFBIG)
- rv = errno = EFBIG;
-#elif defined (EOVERFLOW)
- rv = errno = EOVERFLOW;
-#else
- rv = errno = EINVAL;
-#endif
- goto truncate_exit;
- }
-
- buffer = (char *)malloc (file_size + 1);
- if (buffer == 0)
- {
- rv = errno;
- close (file);
- goto truncate_exit;
- }
-
- chars_read = read (file, buffer, file_size);
- close (file);
-
- if (chars_read <= 0)
- {
- rv = (chars_read < 0) ? errno : 0;
- goto truncate_exit;
- }
-
- orig_lines = lines;
- /* Count backwards from the end of buffer until we have passed
- LINES lines. bp1 is set funny initially. But since bp[1] can't
- be a comment character (since it's off the end) and *bp can't be
- both a newline and the history comment character, it should be OK. */
- for (bp1 = bp = buffer + chars_read - 1; lines && bp > buffer; bp--)
- {
- if (*bp == '\n' && HIST_TIMESTAMP_START(bp1) == 0)
- lines--;
- bp1 = bp;
- }
-
- /* If this is the first line, then the file contains exactly the
- number of lines we want to truncate to, so we don't need to do
- anything. It's the first line if we don't find a newline between
- the current value of i and 0. Otherwise, write from the start of
- this line until the end of the buffer. */
- for ( ; bp > buffer; bp--)
- {
- if (*bp == '\n' && HIST_TIMESTAMP_START(bp1) == 0)
- {
- bp++;
- break;
- }
- bp1 = bp;
- }
-
- /* Write only if there are more lines in the file than we want to
- truncate to. */
- if (bp <= buffer)
- {
- rv = 0;
- /* No-op if LINES == 0 at this point */
- history_lines_written_to_file = orig_lines - lines;
- goto truncate_exit;
- }
-
- bakname = history_backupfile (filename);
- if (filename && bakname)
- rename (filename, bakname);
-
- if ((file = open (filename, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0600)) != -1)
- {
- if (write (file, bp, chars_read - (bp - buffer)) < 0)
- rv = errno;
-
-#if defined (__BEOS__)
- /* BeOS ignores O_TRUNC. */
- ftruncate (file, chars_read - (bp - buffer));
-#endif
-
- if (close (file) < 0 && rv == 0)
- rv = errno;
- }
- else
- rv = errno;
-
- truncate_exit:
- FREE (buffer);
-
- history_lines_written_to_file = orig_lines - lines;
-
- if (rv != 0 && filename && bakname)
- rename (bakname, filename);
- else if (rv == 0 && bakname)
- unlink (bakname);
-
- /* Make sure the new filename is owned by the same user as the old. If one
- user is running this, it's a no-op. If the shell is running after sudo
- with a shared history file, we don't want to leave the history file
- owned by root. */
- if (rv == 0 && exists)
- chown (filename, finfo.st_uid, finfo.st_gid);
-
- xfree (filename);
- FREE (bakname);
-
- return rv;
-}
-
-/* Workhorse function for writing history. Writes the last NELEMENT entries
- from the history list to FILENAME. OVERWRITE is non-zero if you
- wish to replace FILENAME with the entries. */
-static int
-history_do_write (filename, nelements, overwrite)
- const char *filename;
- int nelements, overwrite;
-{
- register int i;
- char *output, *bakname;
- int file, mode, rv, exists;
- struct stat finfo;
-#ifdef HISTORY_USE_MMAP
- size_t cursize;
-
- history_lines_written_to_file = 0;
-
- mode = overwrite ? O_RDWR|O_CREAT|O_TRUNC|O_BINARY : O_RDWR|O_APPEND|O_BINARY;
-#else
- mode = overwrite ? O_WRONLY|O_CREAT|O_TRUNC|O_BINARY : O_WRONLY|O_APPEND|O_BINARY;
-#endif
- output = history_filename (filename);
- bakname = (overwrite && output) ? history_backupfile (output) : 0;
- exists = output ? (stat (output, &finfo) == 0) : 0;
-
- if (output && bakname)
- rename (output, bakname);
-
- file = output ? open (output, mode, 0600) : -1;
- rv = 0;
-
- if (file == -1)
- {
- rv = errno;
- if (output && bakname)
- rename (bakname, output);
- FREE (output);
- FREE (bakname);
- return (rv);
- }
-
-#ifdef HISTORY_USE_MMAP
- cursize = overwrite ? 0 : lseek (file, 0, SEEK_END);
-#endif
-
- if (nelements > history_length)
- nelements = history_length;
-
- /* Build a buffer of all the lines to write, and write them in one syscall.
- Suggested by Peter Ho (peter@robosts.oxford.ac.uk). */
- {
- HIST_ENTRY **the_history; /* local */
- register int j;
- int buffer_size;
- char *buffer;
-
- the_history = history_list ();
- /* Calculate the total number of bytes to write. */
- for (buffer_size = 0, i = history_length - nelements; i < history_length; i++)
-#if 0
- buffer_size += 2 + HISTENT_BYTES (the_history[i]);
-#else
- {
- if (history_write_timestamps && the_history[i]->timestamp && the_history[i]->timestamp[0])
- buffer_size += strlen (the_history[i]->timestamp) + 1;
- buffer_size += strlen (the_history[i]->line) + 1;
- }
-#endif
-
- /* Allocate the buffer, and fill it. */
-#ifdef HISTORY_USE_MMAP
- if (ftruncate (file, buffer_size+cursize) == -1)
- goto mmap_error;
- buffer = (char *)mmap (0, buffer_size, PROT_READ|PROT_WRITE, MAP_WFLAGS, file, cursize);
- if ((void *)buffer == MAP_FAILED)
- {
-mmap_error:
- rv = errno;
- close (file);
- if (output && bakname)
- rename (bakname, output);
- FREE (output);
- FREE (bakname);
- return rv;
- }
-#else
- buffer = (char *)malloc (buffer_size);
- if (buffer == 0)
- {
- rv = errno;
- close (file);
- if (output && bakname)
- rename (bakname, output);
- FREE (output);
- FREE (bakname);
- return rv;
- }
-#endif
-
- for (j = 0, i = history_length - nelements; i < history_length; i++)
- {
- if (history_write_timestamps && the_history[i]->timestamp && the_history[i]->timestamp[0])
- {
- strcpy (buffer + j, the_history[i]->timestamp);
- j += strlen (the_history[i]->timestamp);
- buffer[j++] = '\n';
- }
- strcpy (buffer + j, the_history[i]->line);
- j += strlen (the_history[i]->line);
- buffer[j++] = '\n';
- }
-
-#ifdef HISTORY_USE_MMAP
- if (msync (buffer, buffer_size, MS_ASYNC) != 0 || munmap (buffer, buffer_size) != 0)
- rv = errno;
-#else
- if (write (file, buffer, buffer_size) < 0)
- rv = errno;
- xfree (buffer);
-#endif
- }
-
- history_lines_written_to_file = nelements;
-
- if (close (file) < 0 && rv == 0)
- rv = errno;
-
- if (rv != 0 && output && bakname)
- rename (bakname, output);
- else if (rv == 0 && bakname)
- unlink (bakname);
-
- /* Make sure the new filename is owned by the same user as the old. If one
- user is running this, it's a no-op. If the shell is running after sudo
- with a shared history file, we don't want to leave the history file
- owned by root. */
- if (rv == 0 && exists)
- chown (output, finfo.st_uid, finfo.st_gid);
-
- FREE (output);
- FREE (bakname);
-
- return (rv);
-}
-
-/* Append NELEMENT entries to FILENAME. The entries appended are from
- the end of the list minus NELEMENTs up to the end of the list. */
-int
-append_history (nelements, filename)
- int nelements;
- const char *filename;
-{
- return (history_do_write (filename, nelements, HISTORY_APPEND));
-}
-
-/* Overwrite FILENAME with the current history. If FILENAME is NULL,
- then write the history list to ~/.history. Values returned
- are as in read_history ().*/
-int
-write_history (filename)
- const char *filename;
-{
- return (history_do_write (filename, history_length, HISTORY_OVERWRITE));
-}
+++ /dev/null
-/* kill.c -- kill ring management. */
-
-/* Copyright (C) 1994 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 <http://www.gnu.org/licenses/>.
-*/
-
-#define READLINE_LIBRARY
-
-#if defined (HAVE_CONFIG_H)
-# include <config.h>
-#endif
-
-#include <sys/types.h>
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h> /* for _POSIX_VERSION */
-#endif /* HAVE_UNISTD_H */
-
-#if defined (HAVE_STDLIB_H)
-# include <stdlib.h>
-#else
-# include "ansi_stdlib.h"
-#endif /* HAVE_STDLIB_H */
-
-#include <stdio.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 "xmalloc.h"
-
-/* **************************************************************** */
-/* */
-/* Killing Mechanism */
-/* */
-/* **************************************************************** */
-
-/* What we assume for a max number of kills. */
-#define DEFAULT_MAX_KILLS 10
-
-/* The real variable to look at to find out when to flush kills. */
-static int rl_max_kills = DEFAULT_MAX_KILLS;
-
-/* Where to store killed text. */
-static char **rl_kill_ring = (char **)NULL;
-
-/* Where we are in the kill ring. */
-static int rl_kill_index;
-
-/* How many slots we have in the kill ring. */
-static int rl_kill_ring_length;
-
-static int _rl_copy_to_kill_ring PARAMS((char *, int));
-static int region_kill_internal PARAMS((int));
-static int _rl_copy_word_as_kill PARAMS((int, int));
-static int rl_yank_nth_arg_internal PARAMS((int, int, int));
-
-/* How to say that you only want to save a certain amount
- of kill material. */
-int
-rl_set_retained_kills (num)
- int num;
-{
- return 0;
-}
-
-/* Add TEXT to the kill ring, allocating a new kill ring slot as necessary.
- This uses TEXT directly, so the caller must not free it. If APPEND is
- non-zero, and the last command was a kill, the text is appended to the
- current kill ring slot, otherwise prepended. */
-static int
-_rl_copy_to_kill_ring (text, append)
- char *text;
- int append;
-{
- char *old, *new;
- int slot;
-
- /* First, find the slot to work with. */
- if (_rl_last_command_was_kill == 0)
- {
- /* Get a new slot. */
- if (rl_kill_ring == 0)
- {
- /* If we don't have any defined, then make one. */
- rl_kill_ring = (char **)
- xmalloc (((rl_kill_ring_length = 1) + 1) * sizeof (char *));
- rl_kill_ring[slot = 0] = (char *)NULL;
- }
- else
- {
- /* We have to add a new slot on the end, unless we have
- exceeded the max limit for remembering kills. */
- slot = rl_kill_ring_length;
- if (slot == rl_max_kills)
- {
- register int i;
- xfree (rl_kill_ring[0]);
- for (i = 0; i < slot; i++)
- rl_kill_ring[i] = rl_kill_ring[i + 1];
- }
- else
- {
- slot = rl_kill_ring_length += 1;
- rl_kill_ring = (char **)xrealloc (rl_kill_ring, slot * sizeof (char *));
- }
- rl_kill_ring[--slot] = (char *)NULL;
- }
- }
- else
- slot = rl_kill_ring_length - 1;
-
- /* If the last command was a kill, prepend or append. */
- if (_rl_last_command_was_kill && rl_editing_mode != vi_mode)
- {
- old = rl_kill_ring[slot];
- new = (char *)xmalloc (1 + strlen (old) + strlen (text));
-
- if (append)
- {
- strcpy (new, old);
- strcat (new, text);
- }
- else
- {
- strcpy (new, text);
- strcat (new, old);
- }
- xfree (old);
- xfree (text);
- rl_kill_ring[slot] = new;
- }
- else
- rl_kill_ring[slot] = text;
-
- rl_kill_index = slot;
- return 0;
-}
-
-/* The way to kill something. This appends or prepends to the last
- kill, if the last command was a kill command. if FROM is less
- than TO, then the text is appended, otherwise prepended. If the
- last command was not a kill command, then a new slot is made for
- this kill. */
-int
-rl_kill_text (from, to)
- int from, to;
-{
- char *text;
-
- /* Is there anything to kill? */
- if (from == to)
- {
- _rl_last_command_was_kill++;
- return 0;
- }
-
- text = rl_copy_text (from, to);
-
- /* Delete the copied text from the line. */
- rl_delete_text (from, to);
-
- _rl_copy_to_kill_ring (text, from < to);
-
- _rl_last_command_was_kill++;
- return 0;
-}
-
-/* Now REMEMBER! In order to do prepending or appending correctly, kill
- commands always make rl_point's original position be the FROM argument,
- and rl_point's extent be the TO argument. */
-
-/* **************************************************************** */
-/* */
-/* Killing Commands */
-/* */
-/* **************************************************************** */
-
-/* Delete the word at point, saving the text in the kill ring. */
-int
-rl_kill_word (count, key)
- int count, key;
-{
- int orig_point;
-
- if (count < 0)
- return (rl_backward_kill_word (-count, key));
- else
- {
- orig_point = rl_point;
- rl_forward_word (count, key);
-
- if (rl_point != orig_point)
- rl_kill_text (orig_point, rl_point);
-
- rl_point = orig_point;
- if (rl_editing_mode == emacs_mode)
- rl_mark = rl_point;
- }
- return 0;
-}
-
-/* Rubout the word before point, placing it on the kill ring. */
-int
-rl_backward_kill_word (count, ignore)
- int count, ignore;
-{
- int orig_point;
-
- if (count < 0)
- return (rl_kill_word (-count, ignore));
- else
- {
- orig_point = rl_point;
- rl_backward_word (count, ignore);
-
- if (rl_point != orig_point)
- rl_kill_text (orig_point, rl_point);
-
- if (rl_editing_mode == emacs_mode)
- rl_mark = rl_point;
- }
- return 0;
-}
-
-/* Kill from here to the end of the line. If DIRECTION is negative, kill
- back to the line start instead. */
-int
-rl_kill_line (direction, ignore)
- int direction, ignore;
-{
- int orig_point;
-
- if (direction < 0)
- return (rl_backward_kill_line (1, ignore));
- else
- {
- orig_point = rl_point;
- rl_end_of_line (1, ignore);
- if (orig_point != rl_point)
- rl_kill_text (orig_point, rl_point);
- rl_point = orig_point;
- if (rl_editing_mode == emacs_mode)
- rl_mark = rl_point;
- }
- return 0;
-}
-
-/* Kill backwards to the start of the line. If DIRECTION is negative, kill
- forwards to the line end instead. */
-int
-rl_backward_kill_line (direction, ignore)
- int direction, ignore;
-{
- int orig_point;
-
- if (direction < 0)
- return (rl_kill_line (1, ignore));
- else
- {
- if (rl_point == 0)
- rl_ding ();
- else
- {
- orig_point = rl_point;
- rl_beg_of_line (1, ignore);
- if (rl_point != orig_point)
- rl_kill_text (orig_point, rl_point);
- if (rl_editing_mode == emacs_mode)
- rl_mark = rl_point;
- }
- }
- return 0;
-}
-
-/* Kill the whole line, no matter where point is. */
-int
-rl_kill_full_line (count, ignore)
- int count, ignore;
-{
- rl_begin_undo_group ();
- rl_point = 0;
- rl_kill_text (rl_point, rl_end);
- rl_mark = 0;
- rl_end_undo_group ();
- return 0;
-}
-
-/* The next two functions mimic unix line editing behaviour, except they
- save the deleted text on the kill ring. This is safer than not saving
- it, and since we have a ring, nobody should get screwed. */
-
-/* This does what C-w does in Unix. We can't prevent people from
- using behaviour that they expect. */
-int
-rl_unix_word_rubout (count, key)
- int count, key;
-{
- int orig_point;
-
- if (rl_point == 0)
- rl_ding ();
- else
- {
- orig_point = rl_point;
- if (count <= 0)
- count = 1;
-
- while (count--)
- {
- while (rl_point && whitespace (rl_line_buffer[rl_point - 1]))
- rl_point--;
-
- while (rl_point && (whitespace (rl_line_buffer[rl_point - 1]) == 0))
- rl_point--;
- }
-
- rl_kill_text (orig_point, rl_point);
- if (rl_editing_mode == emacs_mode)
- rl_mark = rl_point;
- }
-
- return 0;
-}
-
-/* This deletes one filename component in a Unix pathname. That is, it
- deletes backward to directory separator (`/') or whitespace. */
-int
-rl_unix_filename_rubout (count, key)
- int count, key;
-{
- int orig_point, c;
-
- if (rl_point == 0)
- rl_ding ();
- else
- {
- orig_point = rl_point;
- if (count <= 0)
- count = 1;
-
- while (count--)
- {
- c = rl_line_buffer[rl_point - 1];
- while (rl_point && (whitespace (c) || c == '/'))
- {
- rl_point--;
- c = rl_line_buffer[rl_point - 1];
- }
-
- while (rl_point && (whitespace (c) == 0) && c != '/')
- {
- rl_point--;
- c = rl_line_buffer[rl_point - 1];
- }
- }
-
- rl_kill_text (orig_point, rl_point);
- if (rl_editing_mode == emacs_mode)
- rl_mark = rl_point;
- }
-
- return 0;
-}
-
-/* Here is C-u doing what Unix does. You don't *have* to use these
- key-bindings. We have a choice of killing the entire line, or
- killing from where we are to the start of the line. We choose the
- latter, because if you are a Unix weenie, then you haven't backspaced
- into the line at all, and if you aren't, then you know what you are
- doing. */
-int
-rl_unix_line_discard (count, key)
- int count, key;
-{
- if (rl_point == 0)
- rl_ding ();
- else
- {
- rl_kill_text (rl_point, 0);
- rl_point = 0;
- if (rl_editing_mode == emacs_mode)
- rl_mark = rl_point;
- }
- return 0;
-}
-
-/* Copy the text in the `region' to the kill ring. If DELETE is non-zero,
- delete the text from the line as well. */
-static int
-region_kill_internal (delete)
- int delete;
-{
- char *text;
-
- if (rl_mark != rl_point)
- {
- text = rl_copy_text (rl_point, rl_mark);
- if (delete)
- rl_delete_text (rl_point, rl_mark);
- _rl_copy_to_kill_ring (text, rl_point < rl_mark);
- }
-
- _rl_last_command_was_kill++;
- return 0;
-}
-
-/* Copy the text in the region to the kill ring. */
-int
-rl_copy_region_to_kill (count, ignore)
- int count, ignore;
-{
- return (region_kill_internal (0));
-}
-
-/* Kill the text between the point and mark. */
-int
-rl_kill_region (count, ignore)
- int count, ignore;
-{
- int r, npoint;
-
- npoint = (rl_point < rl_mark) ? rl_point : rl_mark;
- r = region_kill_internal (1);
- _rl_fix_point (1);
- rl_point = npoint;
- return r;
-}
-
-/* Copy COUNT words to the kill ring. DIR says which direction we look
- to find the words. */
-static int
-_rl_copy_word_as_kill (count, dir)
- int count, dir;
-{
- int om, op, r;
-
- om = rl_mark;
- op = rl_point;
-
- if (dir > 0)
- rl_forward_word (count, 0);
- else
- rl_backward_word (count, 0);
-
- rl_mark = rl_point;
-
- if (dir > 0)
- rl_backward_word (count, 0);
- else
- rl_forward_word (count, 0);
-
- r = region_kill_internal (0);
-
- rl_mark = om;
- rl_point = op;
-
- return r;
-}
-
-int
-rl_copy_forward_word (count, key)
- int count, key;
-{
- if (count < 0)
- return (rl_copy_backward_word (-count, key));
-
- return (_rl_copy_word_as_kill (count, 1));
-}
-
-int
-rl_copy_backward_word (count, key)
- int count, key;
-{
- if (count < 0)
- return (rl_copy_forward_word (-count, key));
-
- return (_rl_copy_word_as_kill (count, -1));
-}
-
-/* Yank back the last killed text. This ignores arguments. */
-int
-rl_yank (count, ignore)
- int count, ignore;
-{
- if (rl_kill_ring == 0)
- {
- _rl_abort_internal ();
- return 1;
- }
-
- _rl_set_mark_at_pos (rl_point);
- rl_insert_text (rl_kill_ring[rl_kill_index]);
- return 0;
-}
-
-/* If the last command was yank, or yank_pop, and the text just
- before point is identical to the current kill item, then
- delete that text from the line, rotate the index down, and
- yank back some other text. */
-int
-rl_yank_pop (count, key)
- int count, key;
-{
- int l, n;
-
- if (((rl_last_func != rl_yank_pop) && (rl_last_func != rl_yank)) ||
- !rl_kill_ring)
- {
- _rl_abort_internal ();
- return 1;
- }
-
- l = strlen (rl_kill_ring[rl_kill_index]);
- n = rl_point - l;
- if (n >= 0 && STREQN (rl_line_buffer + n, rl_kill_ring[rl_kill_index], l))
- {
- rl_delete_text (n, rl_point);
- rl_point = n;
- rl_kill_index--;
- if (rl_kill_index < 0)
- rl_kill_index = rl_kill_ring_length - 1;
- rl_yank (1, 0);
- return 0;
- }
- else
- {
- _rl_abort_internal ();
- return 1;
- }
-}
-
-/* Yank the COUNTh argument from the previous history line, skipping
- HISTORY_SKIP lines before looking for the `previous line'. */
-static int
-rl_yank_nth_arg_internal (count, ignore, history_skip)
- int count, ignore, history_skip;
-{
- register HIST_ENTRY *entry;
- char *arg;
- int i, pos;
-
- pos = where_history ();
-
- if (history_skip)
- {
- for (i = 0; i < history_skip; i++)
- entry = previous_history ();
- }
-
- entry = previous_history ();
-
- history_set_pos (pos);
-
- if (entry == 0)
- {
- rl_ding ();
- return 1;
- }
-
- arg = history_arg_extract (count, count, entry->line);
- if (!arg || !*arg)
- {
- rl_ding ();
- FREE (arg);
- return 1;
- }
-
- rl_begin_undo_group ();
-
- _rl_set_mark_at_pos (rl_point);
-
-#if defined (VI_MODE)
- /* Vi mode always inserts a space before yanking the argument, and it
- inserts it right *after* rl_point. */
- if (rl_editing_mode == vi_mode)
- {
- rl_vi_append_mode (1, ignore);
- rl_insert_text (" ");
- }
-#endif /* VI_MODE */
-
- rl_insert_text (arg);
- xfree (arg);
-
- rl_end_undo_group ();
- return 0;
-}
-
-/* Yank the COUNTth argument from the previous history line. */
-int
-rl_yank_nth_arg (count, ignore)
- int count, ignore;
-{
- return (rl_yank_nth_arg_internal (count, ignore, 0));
-}
-
-/* Yank the last argument from the previous history line. This `knows'
- how rl_yank_nth_arg treats a count of `$'. With an argument, this
- behaves the same as rl_yank_nth_arg. */
-int
-rl_yank_last_arg (count, key)
- int count, key;
-{
- static int history_skip = 0;
- static int explicit_arg_p = 0;
- static int count_passed = 1;
- static int direction = 1;
- static int undo_needed = 0;
- int retval;
-
- if (rl_last_func != rl_yank_last_arg)
- {
- history_skip = 0;
- explicit_arg_p = rl_explicit_arg;
- count_passed = count;
- direction = 1;
- }
- else
- {
- if (undo_needed)
- rl_do_undo ();
- if (count < 0) /* XXX - was < 1 */
- direction = -direction;
- history_skip += direction;
- if (history_skip < 0)
- history_skip = 0;
- }
-
- if (explicit_arg_p)
- retval = rl_yank_nth_arg_internal (count_passed, key, history_skip);
- else
- retval = rl_yank_nth_arg_internal ('$', key, history_skip);
-
- undo_needed = retval == 0;
- return retval;
-}
-
-/* Having read the special escape sequence denoting the beginning of a
- `bracketed paste' sequence, read the rest of the pasted input until the
- closing sequence and insert the pasted text as a single unit without
- interpretation. */
-int
-rl_bracketed_paste_begin (count, key)
- int count, key;
-{
- int retval, c;
- size_t len, cap;
- char *buf;
-
- retval = 1;
- len = 0;
- buf = xmalloc (cap = 64);
-
- RL_SETSTATE (RL_STATE_MOREINPUT);
- while ((c = rl_read_key ()) >= 0)
- {
- if (RL_ISSTATE (RL_STATE_MACRODEF))
- _rl_add_macro_char (c);
-
- if (c == '\r') /* XXX */
- c = '\n';
-
- if (len == cap)
- buf = xrealloc (buf, cap *= 2);
-
- buf[len++] = c;
- if (len >= BRACK_PASTE_SLEN && c == BRACK_PASTE_LAST &&
- STREQN (buf + len - BRACK_PASTE_SLEN, BRACK_PASTE_SUFF, BRACK_PASTE_SLEN))
- {
- len -= BRACK_PASTE_SLEN;
- break;
- }
- }
- RL_UNSETSTATE (RL_STATE_MOREINPUT);
-
- if (c >= 0)
- {
- if (len == cap)
- buf = xrealloc (buf, cap + 1);
- buf[len] = '\0';
- retval = rl_insert_text (buf);
- }
-
- xfree (buf);
- return (retval);
-}
-
-/* A special paste command for Windows users.. */
-#if defined (_WIN32)
-#include <windows.h>
-
-int
-rl_paste_from_clipboard (count, key)
- int count, key;
-{
- char *data, *ptr;
- int len;
-
- if (OpenClipboard (NULL) == 0)
- return (0);
-
- data = (char *)GetClipboardData (CF_TEXT);
- if (data)
- {
- ptr = strchr (data, '\r');
- if (ptr)
- {
- len = ptr - data;
- ptr = (char *)xmalloc (len + 1);
- ptr[len] = '\0';
- strncpy (ptr, data, len);
- }
- else
- ptr = data;
- _rl_set_mark_at_pos (rl_point);
- rl_insert_text (ptr);
- if (ptr != data)
- xfree (ptr);
- CloseClipboard ();
- }
- return (0);
-}
-#endif /* _WIN32 */
+++ /dev/null
-/* readline.c -- a general facility for reading lines of input
- with emacs style editing and completion. */
-
-/* Copyright (C) 1987-2013 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 <http://www.gnu.org/licenses/>.
-*/
-
-#define READLINE_LIBRARY
-
-#if defined (HAVE_CONFIG_H)
-# include <config.h>
-#endif
-
-#include <sys/types.h>
-#include "posixstat.h"
-#include <fcntl.h>
-#if defined (HAVE_SYS_FILE_H)
-# include <sys/file.h>
-#endif /* HAVE_SYS_FILE_H */
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-
-#if defined (HAVE_STDLIB_H)
-# include <stdlib.h>
-#else
-# include "ansi_stdlib.h"
-#endif /* HAVE_STDLIB_H */
-
-#if defined (HAVE_LOCALE_H)
-# include <locale.h>
-#endif
-
-#include <stdio.h>
-#include "posixjmp.h"
-#include <errno.h>
-
-#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 <os2.h>
-#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 *));
-
-#if defined (COLOR_SUPPORT)
-extern void _rl_parse_colors PARAMS((void)); /* XXX */
-#endif
-
-
-/* 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 bind_bracketed_paste_prefix 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 maintenance. */
-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;
-
-/* Non-zero means to prefix the displayed prompt with a character indicating
- the editing mode: @ for emacs, : for vi-command, + for vi-insert. */
-int _rl_show_mode_in_prompt = 0;
-
-/* Non-zero means to attempt to put the terminal in `bracketed paste mode',
- where it will prefix pasted text with an escape sequence and send
- another to mark the end of the paste. */
-int _rl_enable_bracketed_paste = 0;
-
-/* **************************************************************** */
-/* */
-/* 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 and the terminal has been initialized */
- if (_rl_enable_meta & RL_ISSTATE (RL_STATE_TERMPREPPED))
- _rl_enable_meta_key ();
-
- if (rl_startup_hook)
- (*rl_startup_hook) ();
-
-#if defined (VI_MODE)
- if (rl_editing_mode == vi_mode)
- rl_vi_insertion_mode (1, 'i'); /* don't want to reset last */
-#endif /* VI_MODE */
-
- /* 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 (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 and we were told to use it.
- The check whether or not we sent the enable string is in
- _rl_disable_meta_key(); the flag is set in _rl_enable_meta_key */
- _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 = EOF;
- eof_found = 0;
-
-#if !defined (READLINE_CALLBACKS)
- while (rl_done == 0)
- {
-#endif
- lk = _rl_last_command_was_kill;
-
-#if defined (HAVE_POSIX_SIGSETJMP)
- code = sigsetjmp (_rl_top_level, 0);
-#else
- code = setjmp (_rl_top_level);
-#endif
-
- 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; assume that rl_read_key has already called the signal
- handler. */
- 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 ^D the first time, EOF the second
- time in a row. This won't return any partial line read from the tty.
- If we want to change this, to force any existing line to be returned
- when read(2) reads EOF, for example, this is the place to change. */
- if (c == EOF && rl_end)
- {
- if (RL_SIG_RECEIVED ())
- {
- RL_CHECK_SIGNALS ();
- if (rl_signal_event_hook)
- (*rl_signal_event_hook) (); /* XXX */
- }
-
- /* XXX - reading two consecutive EOFs returns EOF */
- if (RL_ISSTATE (RL_STATE_TERMPREPPED))
- {
- if (lastc == _rl_eof_char || lastc == EOF)
- rl_end = 0;
- else
- c = _rl_eof_char;
- }
- else
- c = NEWLINE;
- }
-
- /* The character _rl_eof_char typed to blank line, and not as the
- previous character is interpreted as EOF. This doesn't work when
- READLINE_CALLBACKS is defined, so hitting a series of ^Ds will
- erase all the chars on the line and then return EOF. */
- if (((c == _rl_eof_char && lastc != c) || c == EOF) && rl_end == 0)
- {
-#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 ();
- /* We only treat values < 0 specially to simulate recursion. */
- if (r >= 0 || (r == -1 && (cxt->flags & KSEQ_SUBSEQ) == 0)) /* success! or failure! */
- {
- _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)
- /* Should we do anything special if key == ANYOTHERKEY? */
- 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);
- r = (*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. */
- if (RL_ISSTATE (RL_STATE_MACROINPUT))
- _rl_prev_macro_key ();
- else
- _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. */
- if (RL_ISSTATE (RL_STATE_MACROINPUT))
- _rl_prev_macro_key ();
- else
- _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 (by
- default) or a timeout determined by the value of `keyseq-timeout' */
- /* _rl_keyseq_timeout specified in milliseconds; _rl_input_queued
- takes microseconds, so multiply by 1000 */
- if (rl_editing_mode == vi_mode && key == ESC && map == vi_insertion_keymap
- && _rl_input_queued ((_rl_keyseq_timeout > 0) ? _rl_keyseq_timeout*1000 : 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_ISSTATE (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 (); /* XXX */
- 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_dispatching_keymap == vi_movement_keymap &&
- _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. */
- if (RL_ISSTATE (RL_STATE_MACROINPUT))
- _rl_prev_macro_key ();
- else
- _rl_unget_char (key);
- _rl_dispatching_keymap = map;
- return -2;
- }
- else if (r && got_subseq)
- {
- /* OK, back up the chain. */
- if (RL_ISSTATE (RL_STATE_MACROINPUT))
- _rl_prev_macro_key ();
- else
- _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);
- }
-
- /* Initialize 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 ();
-
- /* Bind the bracketed paste prefix assuming that the user will enable
- it on terminals that support it. */
- bind_bracketed_paste_prefix ();
-
- /* 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_colored_completion_prefix)
- _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);
- rl_bind_keyseq_if_unbound ("\340G", rl_beg_of_line);
- rl_bind_keyseq_if_unbound ("\340O", rl_end_of_line);
- rl_bind_keyseq_if_unbound ("\340S", rl_delete);
- rl_bind_keyseq_if_unbound ("\340R", rl_overwrite_mode);
-
- /* These may or may not work because of the embedded NUL. */
- rl_bind_keyseq_if_unbound ("\\000H", rl_get_previous_history);
- rl_bind_keyseq_if_unbound ("\\000P", rl_get_next_history);
- rl_bind_keyseq_if_unbound ("\\000M", rl_forward_char);
- rl_bind_keyseq_if_unbound ("\\000K", rl_backward_char);
- rl_bind_keyseq_if_unbound ("\\000G", rl_beg_of_line);
- rl_bind_keyseq_if_unbound ("\\000O", rl_end_of_line);
- rl_bind_keyseq_if_unbound ("\\000S", rl_delete);
- rl_bind_keyseq_if_unbound ("\\000R", rl_overwrite_mode);
-#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
-}
-
-static void
-bind_bracketed_paste_prefix ()
-{
- Keymap xkeymap;
-
- xkeymap = _rl_keymap;
-
- _rl_keymap = emacs_standard_keymap;
- rl_bind_keyseq_if_unbound (BRACK_PASTE_PREF, rl_bracketed_paste_begin);
-
- _rl_keymap = vi_insertion_keymap;
- rl_bind_keyseq_if_unbound (BRACK_PASTE_PREF, rl_bracketed_paste_begin);
-
- _rl_keymap = xkeymap;
-}
-
-/* **************************************************************** */
-/* */
-/* 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->kseq = rl_executing_keyseq;
- 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;
-
- sp->entryfunc = rl_completion_entry_function;
- sp->menuentryfunc = rl_menu_completion_entry_function;
- sp->ignorefunc = rl_ignore_some_completions_function;
- sp->attemptfunc = rl_attempted_completion_function;
- sp->wordbreakchars = rl_completer_word_break_characters;
-
- 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_executing_keyseq = sp->kseq;
- 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;
-
- rl_completion_entry_function = sp->entryfunc;
- rl_menu_completion_entry_function = sp->menuentryfunc;
- rl_ignore_some_completions_function = sp->ignorefunc;
- rl_attempted_completion_function = sp->attemptfunc;
- rl_completer_word_break_characters = sp->wordbreakchars;
-
- return (0);
-}
+++ /dev/null
-/* Readline.h -- the names of functions callable from within readline. */
-
-/* Copyright (C) 1987-2013 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 <http://www.gnu.org/licenses/>.
-*/
-
-#if !defined (_READLINE_H_)
-#define _READLINE_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#if defined (READLINE_LIBRARY)
-# include "rlstdc.h"
-# include "rltypedefs.h"
-# include "keymaps.h"
-# include "tilde.h"
-#else
-# include <readline/rlstdc.h>
-# include <readline/rltypedefs.h>
-# include <readline/keymaps.h>
-# include <readline/tilde.h>
-#endif
-
-/* Hex-encoded Readline version number. */
-#define RL_READLINE_VERSION 0x0604 /* Readline 6.4 */
-#define RL_VERSION_MAJOR 6
-#define RL_VERSION_MINOR 4
-
-/* Readline data structures. */
-
-/* Maintaining the state of undo. We remember individual deletes and inserts
- on a chain of things to do. */
-
-/* The actions that undo knows how to undo. Notice that UNDO_DELETE means
- to insert some text, and UNDO_INSERT means to delete some text. I.e.,
- the code tells undo what to undo, not how to undo it. */
-enum undo_code { UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END };
-
-/* What an element of THE_UNDO_LIST looks like. */
-typedef struct undo_list {
- struct undo_list *next;
- int start, end; /* Where the change took place. */
- char *text; /* The text to insert, if undoing a delete. */
- enum undo_code what; /* Delete, Insert, Begin, End. */
-} UNDO_LIST;
-
-/* The current undo list for RL_LINE_BUFFER. */
-extern UNDO_LIST *rl_undo_list;
-
-/* The data structure for mapping textual names to code addresses. */
-typedef struct _funmap {
- const char *name;
- rl_command_func_t *function;
-} FUNMAP;
-
-extern FUNMAP **funmap;
-
-/* **************************************************************** */
-/* */
-/* Functions available to bind to key sequences */
-/* */
-/* **************************************************************** */
-
-/* Bindable commands for numeric arguments. */
-extern int rl_digit_argument PARAMS((int, int));
-extern int rl_universal_argument PARAMS((int, int));
-
-/* Bindable commands for moving the cursor. */
-extern int rl_forward_byte PARAMS((int, int));
-extern int rl_forward_char PARAMS((int, int));
-extern int rl_forward PARAMS((int, int));
-extern int rl_backward_byte PARAMS((int, int));
-extern int rl_backward_char PARAMS((int, int));
-extern int rl_backward PARAMS((int, int));
-extern int rl_beg_of_line PARAMS((int, int));
-extern int rl_end_of_line PARAMS((int, int));
-extern int rl_forward_word PARAMS((int, int));
-extern int rl_backward_word PARAMS((int, int));
-extern int rl_refresh_line PARAMS((int, int));
-extern int rl_clear_screen PARAMS((int, int));
-extern int rl_skip_csi_sequence PARAMS((int, int));
-extern int rl_arrow_keys PARAMS((int, int));
-
-/* Bindable commands for inserting and deleting text. */
-extern int rl_insert PARAMS((int, int));
-extern int rl_quoted_insert PARAMS((int, int));
-extern int rl_tab_insert PARAMS((int, int));
-extern int rl_newline PARAMS((int, int));
-extern int rl_do_lowercase_version PARAMS((int, int));
-extern int rl_rubout PARAMS((int, int));
-extern int rl_delete PARAMS((int, int));
-extern int rl_rubout_or_delete PARAMS((int, int));
-extern int rl_delete_horizontal_space PARAMS((int, int));
-extern int rl_delete_or_show_completions PARAMS((int, int));
-extern int rl_insert_comment PARAMS((int, int));
-
-/* Bindable commands for changing case. */
-extern int rl_upcase_word PARAMS((int, int));
-extern int rl_downcase_word PARAMS((int, int));
-extern int rl_capitalize_word PARAMS((int, int));
-
-/* Bindable commands for transposing characters and words. */
-extern int rl_transpose_words PARAMS((int, int));
-extern int rl_transpose_chars PARAMS((int, int));
-
-/* Bindable commands for searching within a line. */
-extern int rl_char_search PARAMS((int, int));
-extern int rl_backward_char_search PARAMS((int, int));
-
-/* Bindable commands for readline's interface to the command history. */
-extern int rl_beginning_of_history PARAMS((int, int));
-extern int rl_end_of_history PARAMS((int, int));
-extern int rl_get_next_history PARAMS((int, int));
-extern int rl_get_previous_history PARAMS((int, int));
-
-/* Bindable commands for managing the mark and region. */
-extern int rl_set_mark PARAMS((int, int));
-extern int rl_exchange_point_and_mark PARAMS((int, int));
-
-/* Bindable commands to set the editing mode (emacs or vi). */
-extern int rl_vi_editing_mode PARAMS((int, int));
-extern int rl_emacs_editing_mode PARAMS((int, int));
-
-/* Bindable commands to change the insert mode (insert or overwrite) */
-extern int rl_overwrite_mode PARAMS((int, int));
-
-/* Bindable commands for managing key bindings. */
-extern int rl_re_read_init_file PARAMS((int, int));
-extern int rl_dump_functions PARAMS((int, int));
-extern int rl_dump_macros PARAMS((int, int));
-extern int rl_dump_variables PARAMS((int, int));
-
-/* Bindable commands for word completion. */
-extern int rl_complete PARAMS((int, int));
-extern int rl_possible_completions PARAMS((int, int));
-extern int rl_insert_completions PARAMS((int, int));
-extern int rl_old_menu_complete PARAMS((int, int));
-extern int rl_menu_complete PARAMS((int, int));
-extern int rl_backward_menu_complete PARAMS((int, int));
-
-/* Bindable commands for killing and yanking text, and managing the kill ring. */
-extern int rl_kill_word PARAMS((int, int));
-extern int rl_backward_kill_word PARAMS((int, int));
-extern int rl_kill_line PARAMS((int, int));
-extern int rl_backward_kill_line PARAMS((int, int));
-extern int rl_kill_full_line PARAMS((int, int));
-extern int rl_unix_word_rubout PARAMS((int, int));
-extern int rl_unix_filename_rubout PARAMS((int, int));
-extern int rl_unix_line_discard PARAMS((int, int));
-extern int rl_copy_region_to_kill PARAMS((int, int));
-extern int rl_kill_region PARAMS((int, int));
-extern int rl_copy_forward_word PARAMS((int, int));
-extern int rl_copy_backward_word PARAMS((int, int));
-extern int rl_yank PARAMS((int, int));
-extern int rl_yank_pop PARAMS((int, int));
-extern int rl_yank_nth_arg PARAMS((int, int));
-extern int rl_yank_last_arg PARAMS((int, int));
-extern int rl_bracketed_paste_begin PARAMS((int, int));
-/* Not available unless _WIN32 is defined. */
-#if defined (_WIN32)
-extern int rl_paste_from_clipboard PARAMS((int, int));
-#endif
-
-/* Bindable commands for incremental searching. */
-extern int rl_reverse_search_history PARAMS((int, int));
-extern int rl_forward_search_history PARAMS((int, int));
-
-/* Bindable keyboard macro commands. */
-extern int rl_start_kbd_macro PARAMS((int, int));
-extern int rl_end_kbd_macro PARAMS((int, int));
-extern int rl_call_last_kbd_macro PARAMS((int, int));
-extern int rl_print_last_kbd_macro PARAMS((int, int));
-
-/* Bindable undo commands. */
-extern int rl_revert_line PARAMS((int, int));
-extern int rl_undo_command PARAMS((int, int));
-
-/* Bindable tilde expansion commands. */
-extern int rl_tilde_expand PARAMS((int, int));
-
-/* Bindable terminal control commands. */
-extern int rl_restart_output PARAMS((int, int));
-extern int rl_stop_output PARAMS((int, int));
-
-/* Miscellaneous bindable commands. */
-extern int rl_abort PARAMS((int, int));
-extern int rl_tty_status PARAMS((int, int));
-
-/* Bindable commands for incremental and non-incremental history searching. */
-extern int rl_history_search_forward PARAMS((int, int));
-extern int rl_history_search_backward PARAMS((int, int));
-extern int rl_history_substr_search_forward PARAMS((int, int));
-extern int rl_history_substr_search_backward PARAMS((int, int));
-extern int rl_noninc_forward_search PARAMS((int, int));
-extern int rl_noninc_reverse_search PARAMS((int, int));
-extern int rl_noninc_forward_search_again PARAMS((int, int));
-extern int rl_noninc_reverse_search_again PARAMS((int, int));
-
-/* Bindable command used when inserting a matching close character. */
-extern int rl_insert_close PARAMS((int, int));
-
-/* Not available unless READLINE_CALLBACKS is defined. */
-extern void rl_callback_handler_install PARAMS((const char *, rl_vcpfunc_t *));
-extern void rl_callback_read_char PARAMS((void));
-extern void rl_callback_handler_remove PARAMS((void));
-
-/* Things for vi mode. Not available unless readline is compiled -DVI_MODE. */
-/* VI-mode bindable commands. */
-extern int rl_vi_redo PARAMS((int, int));
-extern int rl_vi_undo PARAMS((int, int));
-extern int rl_vi_yank_arg PARAMS((int, int));
-extern int rl_vi_fetch_history PARAMS((int, int));
-extern int rl_vi_search_again PARAMS((int, int));
-extern int rl_vi_search PARAMS((int, int));
-extern int rl_vi_complete PARAMS((int, int));
-extern int rl_vi_tilde_expand PARAMS((int, int));
-extern int rl_vi_prev_word PARAMS((int, int));
-extern int rl_vi_next_word PARAMS((int, int));
-extern int rl_vi_end_word PARAMS((int, int));
-extern int rl_vi_insert_beg PARAMS((int, int));
-extern int rl_vi_append_mode PARAMS((int, int));
-extern int rl_vi_append_eol PARAMS((int, int));
-extern int rl_vi_eof_maybe PARAMS((int, int));
-extern int rl_vi_insertion_mode PARAMS((int, int));
-extern int rl_vi_insert_mode PARAMS((int, int));
-extern int rl_vi_movement_mode PARAMS((int, int));
-extern int rl_vi_arg_digit PARAMS((int, int));
-extern int rl_vi_change_case PARAMS((int, int));
-extern int rl_vi_put PARAMS((int, int));
-extern int rl_vi_column PARAMS((int, int));
-extern int rl_vi_delete_to PARAMS((int, int));
-extern int rl_vi_change_to PARAMS((int, int));
-extern int rl_vi_yank_to PARAMS((int, int));
-extern int rl_vi_rubout PARAMS((int, int));
-extern int rl_vi_delete PARAMS((int, int));
-extern int rl_vi_back_to_indent PARAMS((int, int));
-extern int rl_vi_first_print PARAMS((int, int));
-extern int rl_vi_char_search PARAMS((int, int));
-extern int rl_vi_match PARAMS((int, int));
-extern int rl_vi_change_char PARAMS((int, int));
-extern int rl_vi_subst PARAMS((int, int));
-extern int rl_vi_overstrike PARAMS((int, int));
-extern int rl_vi_overstrike_delete PARAMS((int, int));
-extern int rl_vi_replace PARAMS((int, int));
-extern int rl_vi_set_mark PARAMS((int, int));
-extern int rl_vi_goto_mark PARAMS((int, int));
-
-/* VI-mode utility functions. */
-extern int rl_vi_check PARAMS((void));
-extern int rl_vi_domove PARAMS((int, int *));
-extern int rl_vi_bracktype PARAMS((int));
-
-extern void rl_vi_start_inserting PARAMS((int, int, int));
-
-/* VI-mode pseudo-bindable commands, used as utility functions. */
-extern int rl_vi_fWord PARAMS((int, int));
-extern int rl_vi_bWord PARAMS((int, int));
-extern int rl_vi_eWord PARAMS((int, int));
-extern int rl_vi_fword PARAMS((int, int));
-extern int rl_vi_bword PARAMS((int, int));
-extern int rl_vi_eword PARAMS((int, int));
-
-/* **************************************************************** */
-/* */
-/* Well Published Functions */
-/* */
-/* **************************************************************** */
-
-/* Readline functions. */
-/* Read a line of input. Prompt with PROMPT. A NULL PROMPT means none. */
-extern char *readline PARAMS((const char *));
-
-extern int rl_set_prompt PARAMS((const char *));
-extern int rl_expand_prompt PARAMS((char *));
-
-extern int rl_initialize PARAMS((void));
-
-/* Undocumented; unused by readline */
-extern int rl_discard_argument PARAMS((void));
-
-/* Utility functions to bind keys to readline commands. */
-extern int rl_add_defun PARAMS((const char *, rl_command_func_t *, int));
-extern int rl_bind_key PARAMS((int, rl_command_func_t *));
-extern int rl_bind_key_in_map PARAMS((int, rl_command_func_t *, Keymap));
-extern int rl_unbind_key PARAMS((int));
-extern int rl_unbind_key_in_map PARAMS((int, Keymap));
-extern int rl_bind_key_if_unbound PARAMS((int, rl_command_func_t *));
-extern int rl_bind_key_if_unbound_in_map PARAMS((int, rl_command_func_t *, Keymap));
-extern int rl_unbind_function_in_map PARAMS((rl_command_func_t *, Keymap));
-extern int rl_unbind_command_in_map PARAMS((const char *, Keymap));
-extern int rl_bind_keyseq PARAMS((const char *, rl_command_func_t *));
-extern int rl_bind_keyseq_in_map PARAMS((const char *, rl_command_func_t *, Keymap));
-extern int rl_bind_keyseq_if_unbound PARAMS((const char *, rl_command_func_t *));
-extern int rl_bind_keyseq_if_unbound_in_map PARAMS((const char *, rl_command_func_t *, Keymap));
-extern int rl_generic_bind PARAMS((int, const char *, char *, Keymap));
-
-extern char *rl_variable_value PARAMS((const char *));
-extern int rl_variable_bind PARAMS((const char *, const char *));
-
-/* Backwards compatibility, use rl_bind_keyseq_in_map instead. */
-extern int rl_set_key PARAMS((const char *, rl_command_func_t *, Keymap));
-
-/* Backwards compatibility, use rl_generic_bind instead. */
-extern int rl_macro_bind PARAMS((const char *, const char *, Keymap));
-
-/* Undocumented in the texinfo manual; not really useful to programs. */
-extern int rl_translate_keyseq PARAMS((const char *, char *, int *));
-extern char *rl_untranslate_keyseq PARAMS((int));
-
-extern rl_command_func_t *rl_named_function PARAMS((const char *));
-extern rl_command_func_t *rl_function_of_keyseq PARAMS((const char *, Keymap, int *));
-
-extern void rl_list_funmap_names PARAMS((void));
-extern char **rl_invoking_keyseqs_in_map PARAMS((rl_command_func_t *, Keymap));
-extern char **rl_invoking_keyseqs PARAMS((rl_command_func_t *));
-
-extern void rl_function_dumper PARAMS((int));
-extern void rl_macro_dumper PARAMS((int));
-extern void rl_variable_dumper PARAMS((int));
-
-extern int rl_read_init_file PARAMS((const char *));
-extern int rl_parse_and_bind PARAMS((char *));
-
-/* Functions for manipulating keymaps. */
-extern Keymap rl_make_bare_keymap PARAMS((void));
-extern Keymap rl_copy_keymap PARAMS((Keymap));
-extern Keymap rl_make_keymap PARAMS((void));
-extern void rl_discard_keymap PARAMS((Keymap));
-extern void rl_free_keymap PARAMS((Keymap));
-
-extern Keymap rl_get_keymap_by_name PARAMS((const char *));
-extern char *rl_get_keymap_name PARAMS((Keymap));
-extern void rl_set_keymap PARAMS((Keymap));
-extern Keymap rl_get_keymap PARAMS((void));
-/* Undocumented; used internally only. */
-extern void rl_set_keymap_from_edit_mode PARAMS((void));
-extern char *rl_get_keymap_name_from_edit_mode PARAMS((void));
-
-/* Functions for manipulating the funmap, which maps command names to functions. */
-extern int rl_add_funmap_entry PARAMS((const char *, rl_command_func_t *));
-extern const char **rl_funmap_names PARAMS((void));
-/* Undocumented, only used internally -- there is only one funmap, and this
- function may be called only once. */
-extern void rl_initialize_funmap PARAMS((void));
-
-/* Utility functions for managing keyboard macros. */
-extern void rl_push_macro_input PARAMS((char *));
-
-/* Functions for undoing, from undo.c */
-extern void rl_add_undo PARAMS((enum undo_code, int, int, char *));
-extern void rl_free_undo_list PARAMS((void));
-extern int rl_do_undo PARAMS((void));
-extern int rl_begin_undo_group PARAMS((void));
-extern int rl_end_undo_group PARAMS((void));
-extern int rl_modifying PARAMS((int, int));
-
-/* Functions for redisplay. */
-extern void rl_redisplay PARAMS((void));
-extern int rl_on_new_line PARAMS((void));
-extern int rl_on_new_line_with_prompt PARAMS((void));
-extern int rl_forced_update_display PARAMS((void));
-extern int rl_clear_message PARAMS((void));
-extern int rl_reset_line_state PARAMS((void));
-extern int rl_crlf PARAMS((void));
-
-#if defined (USE_VARARGS) && defined (PREFER_STDARG)
-extern int rl_message (const char *, ...) __attribute__((__format__ (printf, 1, 2)));
-#else
-extern int rl_message ();
-#endif
-
-extern int rl_show_char PARAMS((int));
-
-/* Undocumented in texinfo manual. */
-extern int rl_character_len PARAMS((int, int));
-extern void rl_redraw_prompt_last_line PARAMS((void));
-
-/* Save and restore internal prompt redisplay information. */
-extern void rl_save_prompt PARAMS((void));
-extern void rl_restore_prompt PARAMS((void));
-
-/* Modifying text. */
-extern void rl_replace_line PARAMS((const char *, int));
-extern int rl_insert_text PARAMS((const char *));
-extern int rl_delete_text PARAMS((int, int));
-extern int rl_kill_text PARAMS((int, int));
-extern char *rl_copy_text PARAMS((int, int));
-
-/* Terminal and tty mode management. */
-extern void rl_prep_terminal PARAMS((int));
-extern void rl_deprep_terminal PARAMS((void));
-extern void rl_tty_set_default_bindings PARAMS((Keymap));
-extern void rl_tty_unset_default_bindings PARAMS((Keymap));
-
-extern int rl_reset_terminal PARAMS((const char *));
-extern void rl_resize_terminal PARAMS((void));
-extern void rl_set_screen_size PARAMS((int, int));
-extern void rl_get_screen_size PARAMS((int *, int *));
-extern void rl_reset_screen_size PARAMS((void));
-
-extern char *rl_get_termcap PARAMS((const char *));
-
-/* Functions for character input. */
-extern int rl_stuff_char PARAMS((int));
-extern int rl_execute_next PARAMS((int));
-extern int rl_clear_pending_input PARAMS((void));
-extern int rl_read_key PARAMS((void));
-extern int rl_getc PARAMS((FILE *));
-extern int rl_set_keyboard_input_timeout PARAMS((int));
-
-/* `Public' utility functions . */
-extern void rl_extend_line_buffer PARAMS((int));
-extern int rl_ding PARAMS((void));
-extern int rl_alphabetic PARAMS((int));
-extern void rl_free PARAMS((void *));
-
-/* Readline signal handling, from signals.c */
-extern int rl_set_signals PARAMS((void));
-extern int rl_clear_signals PARAMS((void));
-extern void rl_cleanup_after_signal PARAMS((void));
-extern void rl_reset_after_signal PARAMS((void));
-extern void rl_free_line_state PARAMS((void));
-
-extern void rl_echo_signal_char PARAMS((int));
-
-extern int rl_set_paren_blink_timeout PARAMS((int));
-
-/* History management functions. */
-
-extern void rl_clear_history PARAMS((void));
-
-/* Undocumented. */
-extern int rl_maybe_save_line PARAMS((void));
-extern int rl_maybe_unsave_line PARAMS((void));
-extern int rl_maybe_replace_line PARAMS((void));
-
-/* Completion functions. */
-extern int rl_complete_internal PARAMS((int));
-extern void rl_display_match_list PARAMS((char **, int, int));
-
-extern char **rl_completion_matches PARAMS((const char *, rl_compentry_func_t *));
-extern char *rl_username_completion_function PARAMS((const char *, int));
-extern char *rl_filename_completion_function PARAMS((const char *, int));
-
-extern int rl_completion_mode PARAMS((rl_command_func_t *));
-
-#if 0
-/* Backwards compatibility (compat.c). These will go away sometime. */
-extern void free_undo_list PARAMS((void));
-extern int maybe_save_line PARAMS((void));
-extern int maybe_unsave_line PARAMS((void));
-extern int maybe_replace_line PARAMS((void));
-
-extern int ding PARAMS((void));
-extern int alphabetic PARAMS((int));
-extern int crlf PARAMS((void));
-
-extern char **completion_matches PARAMS((char *, rl_compentry_func_t *));
-extern char *username_completion_function PARAMS((const char *, int));
-extern char *filename_completion_function PARAMS((const char *, int));
-#endif
-
-/* **************************************************************** */
-/* */
-/* Well Published Variables */
-/* */
-/* **************************************************************** */
-
-/* The version of this incarnation of the readline library. */
-extern const char *rl_library_version; /* e.g., "4.2" */
-extern int rl_readline_version; /* e.g., 0x0402 */
-
-/* True if this is real GNU readline. */
-extern int rl_gnu_readline_p;
-
-/* Flags word encapsulating the current readline state. */
-extern int rl_readline_state;
-
-/* Says which editing mode readline is currently using. 1 means emacs mode;
- 0 means vi mode. */
-extern int rl_editing_mode;
-
-/* Insert or overwrite mode for emacs mode. 1 means insert mode; 0 means
- overwrite mode. Reset to insert mode on each input line. */
-extern int rl_insert_mode;
-
-/* The name of the calling program. You should initialize this to
- whatever was in argv[0]. It is used when parsing conditionals. */
-extern const char *rl_readline_name;
-
-/* The prompt readline uses. This is set from the argument to
- readline (), and should not be assigned to directly. */
-extern char *rl_prompt;
-
-/* The prompt string that is actually displayed by rl_redisplay. Public so
- applications can more easily supply their own redisplay functions. */
-extern char *rl_display_prompt;
-
-/* The line buffer that is in use. */
-extern char *rl_line_buffer;
-
-/* The location of point, and end. */
-extern int rl_point;
-extern int rl_end;
-
-/* The mark, or saved cursor position. */
-extern int rl_mark;
-
-/* Flag to indicate that readline has finished with the current input
- line and should return it. */
-extern int rl_done;
-
-/* If set to a character value, that will be the next keystroke read. */
-extern int rl_pending_input;
-
-/* 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. */
-extern int rl_dispatching;
-
-/* Non-zero if the user typed a numeric argument before executing the
- current function. */
-extern int rl_explicit_arg;
-
-/* The current value of the numeric argument specified by the user. */
-extern int rl_numeric_arg;
-
-/* The address of the last command function Readline executed. */
-extern rl_command_func_t *rl_last_func;
-
-/* The name of the terminal to use. */
-extern const char *rl_terminal_name;
-
-/* The input and output streams. */
-extern FILE *rl_instream;
-extern FILE *rl_outstream;
-
-/* If non-zero, Readline gives values of LINES and COLUMNS from the environment
- greater precedence than values fetched from the kernel when computing the
- screen dimensions. */
-extern int rl_prefer_env_winsize;
-
-/* If non-zero, then this is the address of a function to call just
- before readline_internal () prints the first prompt. */
-extern rl_hook_func_t *rl_startup_hook;
-
-/* 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. */
-extern rl_hook_func_t *rl_pre_input_hook;
-
-/* The address of a function to call periodically while Readline is
- awaiting character input, or NULL, for no event handling. */
-extern rl_hook_func_t *rl_event_hook;
-
-/* The address of a function to call if a read is interrupted by a signal. */
-extern rl_hook_func_t *rl_signal_event_hook;
-
-/* The address of a function to call if Readline needs to know whether or not
- there is data available from the current input source. */
-extern rl_hook_func_t *rl_input_available_hook;
-
-/* The address of the function to call to fetch a character from the current
- Readline input stream */
-extern rl_getc_func_t *rl_getc_function;
-
-extern rl_voidfunc_t *rl_redisplay_function;
-
-extern rl_vintfunc_t *rl_prep_term_function;
-extern rl_voidfunc_t *rl_deprep_term_function;
-
-/* Dispatch variables. */
-extern Keymap rl_executing_keymap;
-extern Keymap rl_binding_keymap;
-
-extern int rl_executing_key;
-extern char *rl_executing_keyseq;
-extern int rl_key_sequence_length;
-
-/* Display variables. */
-/* If non-zero, readline will erase the entire line, including any prompt,
- if the only thing typed on an otherwise-blank line is something bound to
- rl_newline. */
-extern int rl_erase_empty_line;
-
-/* If non-zero, the application has already printed the prompt (rl_prompt)
- before calling readline, so readline should not output it the first time
- redisplay is done. */
-extern int rl_already_prompted;
-
-/* A non-zero value means to read only this many characters rather than
- up to a character bound to accept-line. */
-extern int rl_num_chars_to_read;
-
-/* The text of a currently-executing keyboard macro. */
-extern char *rl_executing_macro;
-
-/* Variables to control readline signal handling. */
-/* If non-zero, readline will install its own signal handlers for
- SIGINT, SIGTERM, SIGQUIT, SIGALRM, SIGTSTP, SIGTTIN, and SIGTTOU. */
-extern int rl_catch_signals;
-
-/* If non-zero, readline will install a signal handler for SIGWINCH
- that also attempts to call any calling application's SIGWINCH signal
- handler. Note that the terminal is not cleaned up before the
- application's signal handler is called; use rl_cleanup_after_signal()
- to do that. */
-extern int rl_catch_sigwinch;
-
-/* If non-zero, the readline SIGWINCH handler will modify LINES and
- COLUMNS in the environment. */
-extern int rl_change_environment;
-
-/* Completion variables. */
-/* Pointer to the generator function for completion_matches ().
- NULL means to use rl_filename_completion_function (), the default
- filename completer. */
-extern rl_compentry_func_t *rl_completion_entry_function;
-
-/* Optional generator for menu completion. Default is
- rl_completion_entry_function (rl_filename_completion_function). */
- extern rl_compentry_func_t *rl_menu_completion_entry_function;
-
-/* If rl_ignore_some_completions_function is non-NULL it is the address
- of a function to call after all of the possible matches have been
- generated, but before the actual completion is done to the input line.
- The function is called with one argument; a NULL terminated array
- of (char *). If your function removes any of the elements, they
- must be free()'ed. */
-extern rl_compignore_func_t *rl_ignore_some_completions_function;
-
-/* 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. */
-extern rl_completion_func_t *rl_attempted_completion_function;
-
-/* The basic list of characters that signal a break between words for the
- completer routine. The initial contents of this variable is what
- breaks words in the shell, i.e. "n\"\\'`@$>". */
-extern const char *rl_basic_word_break_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. */
-extern /*const*/ char *rl_completer_word_break_characters;
-
-/* 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. */
-extern rl_cpvfunc_t *rl_completion_word_break_hook;
-
-/* 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. */
-extern const char *rl_completer_quote_characters;
-
-/* List of quote characters which cause a word break. */
-extern const char *rl_basic_quote_characters;
-
-/* List of characters that need to be quoted in filenames by the completer. */
-extern const char *rl_filename_quote_characters;
-
-/* 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. */
-extern const char *rl_special_prefixes;
-
-/* 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. It
- changes what is displayed when the possible completions are printed
- or inserted. The directory completion hook should perform
- any necessary dequoting. This function should return 1 if it modifies
- the directory name pointer passed as an argument. If the directory
- completion hook returns 0, it should not modify the directory name
- pointer passed as an argument. */
-extern rl_icppfunc_t *rl_directory_completion_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 rl_directory_completion_hook, it
- only modifies the directory name used in opendir(2), not what is displayed
- when the possible completions are printed or inserted. If set, it takes
- precedence over rl_directory_completion_hook. The directory rewrite
- hook should perform any necessary dequoting. This function has the same
- return value properties as the directory_completion_hook.
-
- I'm not happy with how this works yet, so it's undocumented. I'm trying
- it in bash to see how well it goes. */
-extern rl_icppfunc_t *rl_directory_rewrite_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. It should
- modify the directory name passed as an argument if appropriate, and return
- non-zero if it modifies the name. This should not worry about dequoting
- the filename; that has already happened by the time it gets here. */
-extern rl_icppfunc_t *rl_filename_stat_hook;
-
-/* 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. */
-extern rl_dequote_func_t *rl_filename_rewrite_hook;
-
-/* Backwards compatibility with previous versions of readline. */
-#define rl_symbolic_link_hook rl_directory_completion_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 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. */
-extern rl_compdisp_func_t *rl_completion_display_matches_hook;
-
-/* 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. */
-extern int rl_filename_completion_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
- filename contains any characters in rl_word_break_chars. This is
- ALWAYS non-zero on entry, and can only be changed within a completion
- entry finder function. */
-extern int rl_filename_quoting_desired;
-
-/* 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. */
-extern rl_quote_func_t *rl_filename_quoting_function;
-
-/* 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. */
-extern rl_dequote_func_t *rl_filename_dequoting_function;
-
-/* 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. */
-extern rl_linebuf_func_t *rl_char_is_quoted_p;
-
-/* Non-zero means to suppress normal filename completion after the
- user-specified completion function has been called. */
-extern int rl_attempted_completion_over;
-
-/* Set to a character describing the type of completion being attempted by
- rl_complete_internal; available for use by application completion
- functions. */
-extern int rl_completion_type;
-
-/* Set to the last key used to invoke one of the completion functions */
-extern int rl_completion_invoking_key;
-
-/* 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. The default value is 100. */
-extern int rl_completion_query_items;
-
-/* Character appended to completed words when at the end of the line. The
- default is a space. Nothing is added if this is '\0'. */
-extern int rl_completion_append_character;
-
-/* If set to non-zero by an application completion function,
- rl_completion_append_character will not be appended. */
-extern int rl_completion_suppress_append;
-
-/* Set to any quote character readline thinks it finds before any application
- completion function is called. */
-extern 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. */
-extern int rl_completion_found_quote;
-
-/* 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. */
-extern int rl_completion_suppress_quote;
-
-/* If non-zero, readline will sort the completion matches. On by default. */
-extern int rl_sort_completion_matches;
-
-/* 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. */
-extern int rl_completion_mark_symlink_dirs;
-
-/* If non-zero, then disallow duplicates in the matches. */
-extern int rl_ignore_completion_duplicates;
-
-/* If this is non-zero, completion is (temporarily) inhibited, and the
- completion character will be inserted as any other. */
-extern int rl_inhibit_completion;
-
-/* Input error; can be returned by (*rl_getc_function) if readline is reading
- a top-level command (RL_ISSTATE (RL_STATE_READCMD)). */
-#define READERR (-2)
-
-/* Definitions available for use by readline clients. */
-#define RL_PROMPT_START_IGNORE '\001'
-#define RL_PROMPT_END_IGNORE '\002'
-
-/* Possible values for do_replace argument to rl_filename_quoting_function,
- called by rl_complete_internal. */
-#define NO_MATCH 0
-#define SINGLE_MATCH 1
-#define MULT_MATCH 2
-
-/* Possible state values for rl_readline_state */
-#define RL_STATE_NONE 0x000000 /* no state; before first call */
-
-#define RL_STATE_INITIALIZING 0x0000001 /* initializing */
-#define RL_STATE_INITIALIZED 0x0000002 /* initialization done */
-#define RL_STATE_TERMPREPPED 0x0000004 /* terminal is prepped */
-#define RL_STATE_READCMD 0x0000008 /* reading a command key */
-#define RL_STATE_METANEXT 0x0000010 /* reading input after ESC */
-#define RL_STATE_DISPATCHING 0x0000020 /* dispatching to a command */
-#define RL_STATE_MOREINPUT 0x0000040 /* reading more input in a command function */
-#define RL_STATE_ISEARCH 0x0000080 /* doing incremental search */
-#define RL_STATE_NSEARCH 0x0000100 /* doing non-inc search */
-#define RL_STATE_SEARCH 0x0000200 /* doing a history search */
-#define RL_STATE_NUMERICARG 0x0000400 /* reading numeric argument */
-#define RL_STATE_MACROINPUT 0x0000800 /* getting input from a macro */
-#define RL_STATE_MACRODEF 0x0001000 /* defining keyboard macro */
-#define RL_STATE_OVERWRITE 0x0002000 /* overwrite mode */
-#define RL_STATE_COMPLETING 0x0004000 /* doing completion */
-#define RL_STATE_SIGHANDLER 0x0008000 /* in readline sighandler */
-#define RL_STATE_UNDOING 0x0010000 /* doing an undo */
-#define RL_STATE_INPUTPENDING 0x0020000 /* rl_execute_next called */
-#define RL_STATE_TTYCSAVED 0x0040000 /* tty special chars saved */
-#define RL_STATE_CALLBACK 0x0080000 /* using the callback interface */
-#define RL_STATE_VIMOTION 0x0100000 /* reading vi motion arg */
-#define RL_STATE_MULTIKEY 0x0200000 /* reading multiple-key command */
-#define RL_STATE_VICMDONCE 0x0400000 /* entered vi command mode at least once */
-#define RL_STATE_REDISPLAYING 0x0800000 /* updating terminal display */
-
-#define RL_STATE_DONE 0x1000000 /* done; accepted line */
-
-#define RL_SETSTATE(x) (rl_readline_state |= (x))
-#define RL_UNSETSTATE(x) (rl_readline_state &= ~(x))
-#define RL_ISSTATE(x) (rl_readline_state & (x))
-
-struct readline_state {
- /* line state */
- int point;
- int end;
- int mark;
- char *buffer;
- int buflen;
- UNDO_LIST *ul;
- char *prompt;
-
- /* global state */
- int rlstate;
- int done;
- Keymap kmap;
-
- /* input state */
- rl_command_func_t *lastfunc;
- int insmode;
- int edmode;
- char *kseq;
- int kseqlen;
- FILE *inf;
- FILE *outf;
- int pendingin;
- char *macro;
-
- /* signal state */
- int catchsigs;
- int catchsigwinch;
-
- /* search state */
-
- /* completion state */
- rl_compentry_func_t *entryfunc;
- rl_compentry_func_t *menuentryfunc;
- rl_compignore_func_t *ignorefunc;
- rl_completion_func_t *attemptfunc;
- char *wordbreakchars;
-
- /* options state */
-
- /* hook state */
-
- /* reserved for future expansion, so the struct size doesn't change */
- char reserved[64];
-};
-
-extern int rl_save_state PARAMS((struct readline_state *));
-extern int rl_restore_state PARAMS((struct readline_state *));
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _READLINE_H_ */
+++ /dev/null
-/* rlmbutil.h -- utility functions for multibyte characters. */
-
-/* Copyright (C) 2001-2009 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 <http://www.gnu.org/licenses/>.
-*/
-
-#if !defined (_RL_MBUTIL_H_)
-#define _RL_MBUTIL_H_
-
-#include "rlstdc.h"
-
-/************************************************/
-/* check multibyte capability for I18N code */
-/************************************************/
-
-/* For platforms which support the ISO C amendement 1 functionality we
- support user defined character classes. */
- /* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */
-#if defined (HAVE_WCTYPE_H) && defined (HAVE_WCHAR_H) && defined (HAVE_LOCALE_H)
-# include <wchar.h>
-# include <wctype.h>
-# if defined (HAVE_ISWCTYPE) && \
- defined (HAVE_ISWLOWER) && \
- defined (HAVE_ISWUPPER) && \
- defined (HAVE_MBSRTOWCS) && \
- defined (HAVE_MBRTOWC) && \
- defined (HAVE_MBRLEN) && \
- defined (HAVE_TOWLOWER) && \
- defined (HAVE_TOWUPPER) && \
- defined (HAVE_WCHAR_T) && \
- defined (HAVE_WCWIDTH)
- /* system is supposed to support XPG5 */
-# define HANDLE_MULTIBYTE 1
-# endif
-#endif
-
-/* If we don't want multibyte chars even on a system that supports them, let
- the configuring user turn multibyte support off. */
-#if defined (NO_MULTIBYTE_SUPPORT)
-# undef HANDLE_MULTIBYTE
-#endif
-
-/* Some systems, like BeOS, have multibyte encodings but lack mbstate_t. */
-#if HANDLE_MULTIBYTE && !defined (HAVE_MBSTATE_T)
-# define wcsrtombs(dest, src, len, ps) (wcsrtombs) (dest, src, len, 0)
-# define mbsrtowcs(dest, src, len, ps) (mbsrtowcs) (dest, src, len, 0)
-# define wcrtomb(s, wc, ps) (wcrtomb) (s, wc, 0)
-# define mbrtowc(pwc, s, n, ps) (mbrtowc) (pwc, s, n, 0)
-# define mbrlen(s, n, ps) (mbrlen) (s, n, 0)
-# define mbstate_t int
-#endif
-
-/* Make sure MB_LEN_MAX is at least 16 on systems that claim to be able to
- handle multibyte chars (some systems define MB_LEN_MAX as 1) */
-#ifdef HANDLE_MULTIBYTE
-# include <limits.h>
-# if defined(MB_LEN_MAX) && (MB_LEN_MAX < 16)
-# undef MB_LEN_MAX
-# endif
-# if !defined (MB_LEN_MAX)
-# define MB_LEN_MAX 16
-# endif
-#endif
-
-/************************************************/
-/* end of multibyte capability checks for I18N */
-/************************************************/
-
-/*
- * Flags for _rl_find_prev_mbchar and _rl_find_next_mbchar:
- *
- * MB_FIND_ANY find any multibyte character
- * MB_FIND_NONZERO find a non-zero-width multibyte character
- */
-
-#define MB_FIND_ANY 0x00
-#define MB_FIND_NONZERO 0x01
-
-extern int _rl_find_prev_mbchar PARAMS((char *, int, int));
-extern int _rl_find_next_mbchar PARAMS((char *, int, int, int));
-
-#ifdef HANDLE_MULTIBYTE
-
-extern int _rl_compare_chars PARAMS((char *, int, mbstate_t *, char *, int, mbstate_t *));
-extern int _rl_get_char_len PARAMS((char *, mbstate_t *));
-extern int _rl_adjust_point PARAMS((char *, int, mbstate_t *));
-
-extern int _rl_read_mbchar PARAMS((char *, int));
-extern int _rl_read_mbstring PARAMS((int, char *, int));
-
-extern int _rl_is_mbchar_matched PARAMS((char *, int, int, char *, int));
-
-extern wchar_t _rl_char_value PARAMS((char *, int));
-extern int _rl_walphabetic PARAMS((wchar_t));
-
-#define _rl_to_wupper(wc) (iswlower (wc) ? towupper (wc) : (wc))
-#define _rl_to_wlower(wc) (iswupper (wc) ? towlower (wc) : (wc))
-
-#define MB_NEXTCHAR(b,s,c,f) \
- ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) \
- ? _rl_find_next_mbchar ((b), (s), (c), (f)) \
- : ((s) + (c)))
-#define MB_PREVCHAR(b,s,f) \
- ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) \
- ? _rl_find_prev_mbchar ((b), (s), (f)) \
- : ((s) - 1))
-
-#define MB_INVALIDCH(x) ((x) == (size_t)-1 || (x) == (size_t)-2)
-#define MB_NULLWCH(x) ((x) == 0)
-
-/* Unicode combining characters range from U+0300 to U+036F */
-#define UNICODE_COMBINING_CHAR(x) ((x) >= 768 && (x) <= 879)
-
-#if defined (WCWIDTH_BROKEN)
-# define WCWIDTH(wc) ((_rl_utf8locale && UNICODE_COMBINING_CHAR(wc)) ? 0 : wcwidth(wc))
-#else
-# define WCWIDTH(wc) wcwidth(wc)
-#endif
-
-#else /* !HANDLE_MULTIBYTE */
-
-#undef MB_LEN_MAX
-#undef MB_CUR_MAX
-
-#define MB_LEN_MAX 1
-#define MB_CUR_MAX 1
-
-#define _rl_find_prev_mbchar(b, i, f) (((i) == 0) ? (i) : ((i) - 1))
-#define _rl_find_next_mbchar(b, i1, i2, f) ((i1) + (i2))
-
-#define _rl_char_value(buf,ind) ((buf)[(ind)])
-
-#define _rl_walphabetic(c) (rl_alphabetic (c))
-
-#define _rl_to_wupper(c) (_rl_to_upper (c))
-#define _rl_to_wlower(c) (_rl_to_lower (c))
-
-#define MB_NEXTCHAR(b,s,c,f) ((s) + (c))
-#define MB_PREVCHAR(b,s,f) ((s) - 1)
-
-#define MB_INVALIDCH(x) (0)
-#define MB_NULLWCH(x) (0)
-
-#endif /* !HANDLE_MULTIBYTE */
-
-extern int rl_byte_oriented;
-
-#endif /* _RL_MBUTIL_H_ */
+++ /dev/null
-/* signals.c -- signal handling support 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 <http://www.gnu.org/licenses/>.
-*/
-
-#define READLINE_LIBRARY
-
-#if defined (HAVE_CONFIG_H)
-# include <config.h>
-#endif
-
-#include <stdio.h> /* Just for NULL. Yuck. */
-#include <sys/types.h>
-#include <signal.h>
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-
-/* System-specific feature definitions and include files. */
-#include "rldefs.h"
-
-#if defined (GWINSZ_IN_SYS_IOCTL)
-# include <sys/ioctl.h>
-#endif /* GWINSZ_IN_SYS_IOCTL */
-
-/* Some standard library routines. */
-#include "readline.h"
-#include "history.h"
-
-#include "rlprivate.h"
-
-#if defined (HANDLE_SIGNALS)
-
-#if !defined (RETSIGTYPE)
-# if defined (VOID_SIGHANDLER)
-# define RETSIGTYPE void
-# else
-# define RETSIGTYPE int
-# endif /* !VOID_SIGHANDLER */
-#endif /* !RETSIGTYPE */
-
-#if defined (VOID_SIGHANDLER)
-# define SIGHANDLER_RETURN return
-#else
-# define SIGHANDLER_RETURN return (0)
-#endif
-
-/* This typedef is equivalent to the one for Function; it allows us
- to say SigHandler *foo = signal (SIGKILL, SIG_IGN); */
-typedef RETSIGTYPE SigHandler ();
-
-#if defined (HAVE_POSIX_SIGNALS)
-typedef struct sigaction sighandler_cxt;
-# define rl_sigaction(s, nh, oh) sigaction(s, nh, oh)
-#else
-typedef struct { SigHandler *sa_handler; int sa_mask, sa_flags; } sighandler_cxt;
-# define sigemptyset(m)
-#endif /* !HAVE_POSIX_SIGNALS */
-
-#ifndef SA_RESTART
-# define SA_RESTART 0
-#endif
-
-static SigHandler *rl_set_sighandler PARAMS((int, SigHandler *, sighandler_cxt *));
-static void rl_maybe_set_sighandler PARAMS((int, SigHandler *, sighandler_cxt *));
-static void rl_maybe_restore_sighandler PARAMS((int, sighandler_cxt *));
-
-static RETSIGTYPE rl_signal_handler PARAMS((int));
-static RETSIGTYPE _rl_handle_signal PARAMS((int));
-
-/* Exported variables for use by applications. */
-
-/* If non-zero, readline will install its own signal handlers for
- SIGINT, SIGTERM, SIGHUP, SIGQUIT, SIGALRM, SIGTSTP, SIGTTIN, and SIGTTOU. */
-int rl_catch_signals = 1;
-
-/* If non-zero, readline will install a signal handler for SIGWINCH. */
-#ifdef SIGWINCH
-int rl_catch_sigwinch = 1;
-#else
-int rl_catch_sigwinch = 0; /* for the readline state struct in readline.c */
-#endif
-
-/* Private variables. */
-int _rl_interrupt_immediately = 0;
-int volatile _rl_caught_signal = 0; /* should be sig_atomic_t, but that requires including <signal.h> everywhere */
-
-/* If non-zero, print characters corresponding to received signals as long as
- the user has indicated his desire to do so (_rl_echo_control_chars). */
-int _rl_echoctl = 0;
-
-int _rl_intr_char = 0;
-int _rl_quit_char = 0;
-int _rl_susp_char = 0;
-
-static int signals_set_flag;
-static int sigwinch_set_flag;
-
-/* **************************************************************** */
-/* */
-/* Signal Handling */
-/* */
-/* **************************************************************** */
-
-static sighandler_cxt old_int, old_term, old_hup, old_alrm, old_quit;
-#if defined (SIGTSTP)
-static sighandler_cxt old_tstp, old_ttou, old_ttin;
-#endif
-#if defined (SIGWINCH)
-static sighandler_cxt old_winch;
-#endif
-
-_rl_sigcleanup_func_t *_rl_sigcleanup;
-void *_rl_sigcleanarg;
-
-/* Readline signal handler functions. */
-
-/* Called from RL_CHECK_SIGNALS() macro */
-RETSIGTYPE
-_rl_signal_handler (sig)
- int sig;
-{
- _rl_caught_signal = 0; /* XXX */
-
-#if defined (SIGWINCH)
- if (sig == SIGWINCH)
- {
- rl_resize_terminal ();
- /* XXX - experimental for now */
- /* Call a signal hook because though we called the original signal handler
- in rl_sigwinch_handler below, we will not resend the signal to
- ourselves. */
- if (rl_signal_event_hook)
- (*rl_signal_event_hook) ();
- }
- else
-#endif
- _rl_handle_signal (sig);
-
- SIGHANDLER_RETURN;
-}
-
-static RETSIGTYPE
-rl_signal_handler (sig)
- int sig;
-{
- if (_rl_interrupt_immediately)
- {
- _rl_interrupt_immediately = 0;
- _rl_handle_signal (sig);
- }
- else
- _rl_caught_signal = sig;
-
- SIGHANDLER_RETURN;
-}
-
-static RETSIGTYPE
-_rl_handle_signal (sig)
- int sig;
-{
-#if defined (HAVE_POSIX_SIGNALS)
- sigset_t set;
-#else /* !HAVE_POSIX_SIGNALS */
-# if defined (HAVE_BSD_SIGNALS)
- long omask;
-# else /* !HAVE_BSD_SIGNALS */
- sighandler_cxt dummy_cxt; /* needed for rl_set_sighandler call */
-# endif /* !HAVE_BSD_SIGNALS */
-#endif /* !HAVE_POSIX_SIGNALS */
-
- RL_SETSTATE(RL_STATE_SIGHANDLER);
-
-#if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS)
- /* Since the signal will not be blocked while we are in the signal
- handler, ignore it until rl_clear_signals resets the catcher. */
-# if defined (SIGALRM)
- if (sig == SIGINT || sig == SIGALRM)
-# else
- if (sig == SIGINT)
-# endif
- rl_set_sighandler (sig, SIG_IGN, &dummy_cxt);
-#endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */
-
- /* If there's a sig cleanup function registered, call it and `deregister'
- the cleanup function to avoid multiple calls */
- if (_rl_sigcleanup)
- {
- (*_rl_sigcleanup) (sig, _rl_sigcleanarg);
- _rl_sigcleanup = 0;
- _rl_sigcleanarg = 0;
- }
-
- switch (sig)
- {
- case SIGINT:
- _rl_reset_completion_state ();
- rl_free_line_state ();
- /* FALLTHROUGH */
-
- case SIGTERM:
- case SIGHUP:
-#if defined (SIGTSTP)
- case SIGTSTP:
- case SIGTTOU:
- case SIGTTIN:
-#endif /* SIGTSTP */
-#if defined (SIGALRM)
- case SIGALRM:
-#endif
-#if defined (SIGQUIT)
- case SIGQUIT:
-#endif
- rl_echo_signal_char (sig);
- rl_cleanup_after_signal ();
-
-#if defined (HAVE_POSIX_SIGNALS)
- sigemptyset (&set);
- sigprocmask (SIG_BLOCK, (sigset_t *)NULL, &set);
- sigdelset (&set, sig);
-#else /* !HAVE_POSIX_SIGNALS */
-# if defined (HAVE_BSD_SIGNALS)
- omask = sigblock (0);
-# endif /* HAVE_BSD_SIGNALS */
-#endif /* !HAVE_POSIX_SIGNALS */
-
-#if defined (__EMX__)
- signal (sig, SIG_ACK);
-#endif
-
-#if defined (HAVE_KILL)
- kill (getpid (), sig);
-#else
- raise (sig); /* assume we have raise */
-#endif
-
- /* Let the signal that we just sent through. */
-#if defined (HAVE_POSIX_SIGNALS)
- sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL);
-#else /* !HAVE_POSIX_SIGNALS */
-# if defined (HAVE_BSD_SIGNALS)
- sigsetmask (omask & ~(sigmask (sig)));
-# endif /* HAVE_BSD_SIGNALS */
-#endif /* !HAVE_POSIX_SIGNALS */
-
- rl_reset_after_signal ();
- }
-
- RL_UNSETSTATE(RL_STATE_SIGHANDLER);
- SIGHANDLER_RETURN;
-}
-
-#if defined (SIGWINCH)
-static RETSIGTYPE
-rl_sigwinch_handler (sig)
- int sig;
-{
- SigHandler *oh;
-
-#if defined (MUST_REINSTALL_SIGHANDLERS)
- sighandler_cxt dummy_winch;
-
- /* We don't want to change old_winch -- it holds the state of SIGWINCH
- disposition set by the calling application. We need this state
- because we call the application's SIGWINCH handler after updating
- our own idea of the screen size. */
- rl_set_sighandler (SIGWINCH, rl_sigwinch_handler, &dummy_winch);
-#endif
-
- RL_SETSTATE(RL_STATE_SIGHANDLER);
- _rl_caught_signal = sig;
-_rl_errmsg("rl_sigwinch_handler");
- /* If another sigwinch handler has been installed, call it. */
- oh = (SigHandler *)old_winch.sa_handler;
- if (oh && oh != (SigHandler *)SIG_IGN && oh != (SigHandler *)SIG_DFL)
- (*oh) (sig);
-
- RL_UNSETSTATE(RL_STATE_SIGHANDLER);
- SIGHANDLER_RETURN;
-}
-#endif /* SIGWINCH */
-
-/* Functions to manage signal handling. */
-
-#if !defined (HAVE_POSIX_SIGNALS)
-static int
-rl_sigaction (sig, nh, oh)
- int sig;
- sighandler_cxt *nh, *oh;
-{
- oh->sa_handler = signal (sig, nh->sa_handler);
- return 0;
-}
-#endif /* !HAVE_POSIX_SIGNALS */
-
-/* Set up a readline-specific signal handler, saving the old signal
- information in OHANDLER. Return the old signal handler, like
- signal(). */
-static SigHandler *
-rl_set_sighandler (sig, handler, ohandler)
- int sig;
- SigHandler *handler;
- sighandler_cxt *ohandler;
-{
- sighandler_cxt old_handler;
-#if defined (HAVE_POSIX_SIGNALS)
- struct sigaction act;
-
- act.sa_handler = handler;
-# if defined (SIGWINCH)
- act.sa_flags = (sig == SIGWINCH) ? SA_RESTART : 0;
-# else
- act.sa_flags = 0;
-# endif /* SIGWINCH */
- sigemptyset (&act.sa_mask);
- sigemptyset (&ohandler->sa_mask);
- sigaction (sig, &act, &old_handler);
-#else
- old_handler.sa_handler = (SigHandler *)signal (sig, handler);
-#endif /* !HAVE_POSIX_SIGNALS */
-
- /* XXX -- assume we have memcpy */
- /* If rl_set_signals is called twice in a row, don't set the old handler to
- rl_signal_handler, because that would cause infinite recursion. */
- if (handler != rl_signal_handler || old_handler.sa_handler != rl_signal_handler)
- memcpy (ohandler, &old_handler, sizeof (sighandler_cxt));
-
- return (ohandler->sa_handler);
-}
-
-/* Set disposition of SIG to HANDLER, returning old state in OHANDLER. Don't
- change disposition if OHANDLER indicates the signal was ignored. */
-static void
-rl_maybe_set_sighandler (sig, handler, ohandler)
- int sig;
- SigHandler *handler;
- sighandler_cxt *ohandler;
-{
- sighandler_cxt dummy;
- SigHandler *oh;
-
- sigemptyset (&dummy.sa_mask);
- dummy.sa_flags = 0;
- oh = rl_set_sighandler (sig, handler, ohandler);
- if (oh == (SigHandler *)SIG_IGN)
- rl_sigaction (sig, ohandler, &dummy);
-}
-
-/* Set the disposition of SIG to HANDLER, if HANDLER->sa_handler indicates the
- signal was not being ignored. MUST only be called for signals whose
- disposition was changed using rl_maybe_set_sighandler or for which the
- SIG_IGN check was performed inline (e.g., SIGALRM below). */
-static void
-rl_maybe_restore_sighandler (sig, handler)
- int sig;
- sighandler_cxt *handler;
-{
- sighandler_cxt dummy;
-
- sigemptyset (&dummy.sa_mask);
- dummy.sa_flags = 0;
- if (handler->sa_handler != SIG_IGN)
- rl_sigaction (sig, handler, &dummy);
-}
-
-int
-rl_set_signals ()
-{
- sighandler_cxt dummy;
- SigHandler *oh;
-#if defined (HAVE_POSIX_SIGNALS)
- static int sigmask_set = 0;
- static sigset_t bset, oset;
-#endif
-
-#if defined (HAVE_POSIX_SIGNALS)
- if (rl_catch_signals && sigmask_set == 0)
- {
- sigemptyset (&bset);
-
- sigaddset (&bset, SIGINT);
- sigaddset (&bset, SIGTERM);
- sigaddset (&bset, SIGHUP);
-#if defined (SIGQUIT)
- sigaddset (&bset, SIGQUIT);
-#endif
-#if defined (SIGALRM)
- sigaddset (&bset, SIGALRM);
-#endif
-#if defined (SIGTSTP)
- sigaddset (&bset, SIGTSTP);
-#endif
-#if defined (SIGTTIN)
- sigaddset (&bset, SIGTTIN);
-#endif
-#if defined (SIGTTOU)
- sigaddset (&bset, SIGTTOU);
-#endif
- sigmask_set = 1;
- }
-#endif /* HAVE_POSIX_SIGNALS */
-
- if (rl_catch_signals && signals_set_flag == 0)
- {
-#if defined (HAVE_POSIX_SIGNALS)
- sigemptyset (&oset);
- sigprocmask (SIG_BLOCK, &bset, &oset);
-#endif
-
- rl_maybe_set_sighandler (SIGINT, rl_signal_handler, &old_int);
- rl_maybe_set_sighandler (SIGTERM, rl_signal_handler, &old_term);
- rl_maybe_set_sighandler (SIGHUP, rl_signal_handler, &old_hup);
-#if defined (SIGQUIT)
- rl_maybe_set_sighandler (SIGQUIT, rl_signal_handler, &old_quit);
-#endif
-
-#if defined (SIGALRM)
- oh = rl_set_sighandler (SIGALRM, rl_signal_handler, &old_alrm);
- if (oh == (SigHandler *)SIG_IGN)
- rl_sigaction (SIGALRM, &old_alrm, &dummy);
-#if defined (HAVE_POSIX_SIGNALS) && defined (SA_RESTART)
- /* If the application using readline has already installed a signal
- handler with SA_RESTART, SIGALRM will cause reads to be restarted
- automatically, so readline should just get out of the way. Since
- we tested for SIG_IGN above, we can just test for SIG_DFL here. */
- if (oh != (SigHandler *)SIG_DFL && (old_alrm.sa_flags & SA_RESTART))
- rl_sigaction (SIGALRM, &old_alrm, &dummy);
-#endif /* HAVE_POSIX_SIGNALS */
-#endif /* SIGALRM */
-
-#if defined (SIGTSTP)
- rl_maybe_set_sighandler (SIGTSTP, rl_signal_handler, &old_tstp);
-#endif /* SIGTSTP */
-
-#if defined (SIGTTOU)
- rl_maybe_set_sighandler (SIGTTOU, rl_signal_handler, &old_ttou);
-#endif /* SIGTTOU */
-
-#if defined (SIGTTIN)
- rl_maybe_set_sighandler (SIGTTIN, rl_signal_handler, &old_ttin);
-#endif /* SIGTTIN */
-
- signals_set_flag = 1;
-
-#if defined (HAVE_POSIX_SIGNALS)
- sigprocmask (SIG_SETMASK, &oset, (sigset_t *)NULL);
-#endif
- }
-
-#if defined (SIGWINCH)
- if (rl_catch_sigwinch && sigwinch_set_flag == 0)
- {
- rl_maybe_set_sighandler (SIGWINCH, rl_sigwinch_handler, &old_winch);
- sigwinch_set_flag = 1;
- }
-#endif /* SIGWINCH */
-
- return 0;
-}
-
-int
-rl_clear_signals ()
-{
- sighandler_cxt dummy;
-
- if (rl_catch_signals && signals_set_flag == 1)
- {
- sigemptyset (&dummy.sa_mask);
-
- /* Since rl_maybe_set_sighandler doesn't override a SIG_IGN handler,
- we should in theory not have to restore a handler where
- old_xxx.sa_handler == SIG_IGN. That's what rl_maybe_restore_sighandler
- does. Fewer system calls should reduce readline's per-line
- overhead */
- rl_maybe_restore_sighandler (SIGINT, &old_int);
- rl_maybe_restore_sighandler (SIGTERM, &old_term);
- rl_maybe_restore_sighandler (SIGHUP, &old_hup);
-#if defined (SIGQUIT)
- rl_maybe_restore_sighandler (SIGQUIT, &old_quit);
-#endif
-#if defined (SIGALRM)
- rl_maybe_restore_sighandler (SIGALRM, &old_alrm);
-#endif
-
-#if defined (SIGTSTP)
- rl_maybe_restore_sighandler (SIGTSTP, &old_tstp);
-#endif /* SIGTSTP */
-
-#if defined (SIGTTOU)
- rl_maybe_restore_sighandler (SIGTTOU, &old_ttou);
-#endif /* SIGTTOU */
-
-#if defined (SIGTTIN)
- rl_maybe_restore_sighandler (SIGTTIN, &old_ttin);
-#endif /* SIGTTIN */
-
- signals_set_flag = 0;
- }
-
-#if defined (SIGWINCH)
- if (rl_catch_sigwinch && sigwinch_set_flag == 1)
- {
- sigemptyset (&dummy.sa_mask);
- rl_sigaction (SIGWINCH, &old_winch, &dummy);
- sigwinch_set_flag = 0;
- }
-#endif
-
- return 0;
-}
-
-/* Clean up the terminal and readline state after catching a signal, before
- resending it to the calling application. */
-void
-rl_cleanup_after_signal ()
-{
- _rl_clean_up_for_exit ();
- if (rl_deprep_term_function)
- (*rl_deprep_term_function) ();
- rl_clear_pending_input ();
- rl_clear_signals ();
-}
-
-/* Reset the terminal and readline state after a signal handler returns. */
-void
-rl_reset_after_signal ()
-{
- if (rl_prep_term_function)
- (*rl_prep_term_function) (_rl_meta_flag);
- rl_set_signals ();
-}
-
-/* Free up the readline variable line state for the current line (undo list,
- any partial history entry, any keyboard macros in progress, and any
- numeric arguments in process) after catching a signal, before calling
- rl_cleanup_after_signal(). */
-void
-rl_free_line_state ()
-{
- register HIST_ENTRY *entry;
-
- rl_free_undo_list ();
-
- entry = current_history ();
- if (entry)
- entry->data = (char *)NULL;
-
- _rl_kill_kbd_macro ();
- rl_clear_message ();
- _rl_reset_argument ();
-}
-
-#endif /* HANDLE_SIGNALS */
-
-/* **************************************************************** */
-/* */
-/* SIGINT Management */
-/* */
-/* **************************************************************** */
-
-#if defined (HAVE_POSIX_SIGNALS)
-static sigset_t sigint_set, sigint_oset;
-static sigset_t sigwinch_set, sigwinch_oset;
-#else /* !HAVE_POSIX_SIGNALS */
-# if defined (HAVE_BSD_SIGNALS)
-static int sigint_oldmask;
-static int sigwinch_oldmask;
-# endif /* HAVE_BSD_SIGNALS */
-#endif /* !HAVE_POSIX_SIGNALS */
-
-static int sigint_blocked;
-static int sigwinch_blocked;
-
-/* Cause SIGINT to not be delivered until the corresponding call to
- release_sigint(). */
-void
-_rl_block_sigint ()
-{
- if (sigint_blocked)
- return;
-
- sigint_blocked = 1;
-}
-
-/* Allow SIGINT to be delivered. */
-void
-_rl_release_sigint ()
-{
- if (sigint_blocked == 0)
- return;
-
- sigint_blocked = 0;
- RL_CHECK_SIGNALS ();
-}
-
-/* Cause SIGWINCH to not be delivered until the corresponding call to
- release_sigwinch(). */
-void
-_rl_block_sigwinch ()
-{
- if (sigwinch_blocked)
- return;
-
-#if defined (SIGWINCH)
-
-#if defined (HAVE_POSIX_SIGNALS)
- sigemptyset (&sigwinch_set);
- sigemptyset (&sigwinch_oset);
- sigaddset (&sigwinch_set, SIGWINCH);
- sigprocmask (SIG_BLOCK, &sigwinch_set, &sigwinch_oset);
-#else /* !HAVE_POSIX_SIGNALS */
-# if defined (HAVE_BSD_SIGNALS)
- sigwinch_oldmask = sigblock (sigmask (SIGWINCH));
-# else /* !HAVE_BSD_SIGNALS */
-# if defined (HAVE_USG_SIGHOLD)
- sighold (SIGWINCH);
-# endif /* HAVE_USG_SIGHOLD */
-# endif /* !HAVE_BSD_SIGNALS */
-#endif /* !HAVE_POSIX_SIGNALS */
-
-#endif /* SIGWINCH */
-
- sigwinch_blocked = 1;
-}
-
-/* Allow SIGWINCH to be delivered. */
-void
-_rl_release_sigwinch ()
-{
- if (sigwinch_blocked == 0)
- return;
-
-#if defined (SIGWINCH)
-
-#if defined (HAVE_POSIX_SIGNALS)
- sigprocmask (SIG_SETMASK, &sigwinch_oset, (sigset_t *)NULL);
-#else
-# if defined (HAVE_BSD_SIGNALS)
- sigsetmask (sigwinch_oldmask);
-# else /* !HAVE_BSD_SIGNALS */
-# if defined (HAVE_USG_SIGHOLD)
- sigrelse (SIGWINCH);
-# endif /* HAVE_USG_SIGHOLD */
-# endif /* !HAVE_BSD_SIGNALS */
-#endif /* !HAVE_POSIX_SIGNALS */
-
-#endif /* SIGWINCH */
-
- sigwinch_blocked = 0;
-}
-
-/* **************************************************************** */
-/* */
-/* Echoing special control characters */
-/* */
-/* **************************************************************** */
-void
-rl_echo_signal_char (sig)
- int sig;
-{
- char cstr[3];
- int cslen, c;
-
- if (_rl_echoctl == 0 || _rl_echo_control_chars == 0)
- return;
-
- switch (sig)
- {
- case SIGINT: c = _rl_intr_char; break;
-#if defined (SIGQUIT)
- case SIGQUIT: c = _rl_quit_char; break;
-#endif
-#if defined (SIGTSTP)
- case SIGTSTP: c = _rl_susp_char; break;
-#endif
- default: return;
- }
-
- if (CTRL_CHAR (c) || c == RUBOUT)
- {
- cstr[0] = '^';
- cstr[1] = CTRL_CHAR (c) ? UNCTRL (c) : '?';
- cstr[cslen = 2] = '\0';
- }
- else
- {
- cstr[0] = c;
- cstr[cslen = 1] = '\0';
- }
-
- _rl_output_some_chars (cstr, cslen);
-}
+++ /dev/null
-/* text.c -- text handling commands for readline. */
-
-/* Copyright (C) 1987-2010 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 <http://www.gnu.org/licenses/>.
-*/
-
-#define READLINE_LIBRARY
-
-#if defined (HAVE_CONFIG_H)
-# include <config.h>
-#endif
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-
-#if defined (HAVE_STDLIB_H)
-# include <stdlib.h>
-#else
-# include "ansi_stdlib.h"
-#endif /* HAVE_STDLIB_H */
-
-#if defined (HAVE_LOCALE_H)
-# include <locale.h>
-#endif
-
-#include <stdio.h>
-
-/* System-specific feature definitions and include files. */
-#include "rldefs.h"
-#include "rlmbutil.h"
-
-#if defined (__EMX__)
-# define INCL_DOSPROCESS
-# include <os2.h>
-#endif /* __EMX__ */
-
-/* Some standard library routines. */
-#include "readline.h"
-#include "history.h"
-
-#include "rlprivate.h"
-#include "rlshell.h"
-#include "xmalloc.h"
-
-/* Forward declarations. */
-static int rl_change_case PARAMS((int, int));
-static int _rl_char_search PARAMS((int, int, int));
-
-#if defined (READLINE_CALLBACKS)
-static int _rl_insert_next_callback PARAMS((_rl_callback_generic_arg *));
-static int _rl_char_search_callback PARAMS((_rl_callback_generic_arg *));
-#endif
-
-/* The largest chunk of text that can be inserted in one call to
- rl_insert_text. Text blocks larger than this are divided. */
-#define TEXT_COUNT_MAX 1024
-
-/* **************************************************************** */
-/* */
-/* Insert and Delete */
-/* */
-/* **************************************************************** */
-
-/* Insert a string of text into the line at point. This is the only
- way that you should do insertion. _rl_insert_char () calls this
- function. Returns the number of characters inserted. */
-int
-rl_insert_text (string)
- const char *string;
-{
- register int i, l;
-
- l = (string && *string) ? strlen (string) : 0;
- if (l == 0)
- return 0;
-
- if (rl_end + l >= rl_line_buffer_len)
- rl_extend_line_buffer (rl_end + l);
-
- for (i = rl_end; i >= rl_point; i--)
- rl_line_buffer[i + l] = rl_line_buffer[i];
- strncpy (rl_line_buffer + rl_point, string, l);
-
- /* Remember how to undo this if we aren't undoing something. */
- if (_rl_doing_an_undo == 0)
- {
- /* If possible and desirable, concatenate the undos. */
- if ((l == 1) &&
- rl_undo_list &&
- (rl_undo_list->what == UNDO_INSERT) &&
- (rl_undo_list->end == rl_point) &&
- (rl_undo_list->end - rl_undo_list->start < 20))
- rl_undo_list->end++;
- else
- rl_add_undo (UNDO_INSERT, rl_point, rl_point + l, (char *)NULL);
- }
- rl_point += l;
- rl_end += l;
- rl_line_buffer[rl_end] = '\0';
- return l;
-}
-
-/* Delete the string between FROM and TO. FROM is inclusive, TO is not.
- Returns the number of characters deleted. */
-int
-rl_delete_text (from, to)
- int from, to;
-{
- register char *text;
- register int diff, i;
-
- /* Fix it if the caller is confused. */
- if (from > to)
- SWAP (from, to);
-
- /* fix boundaries */
- if (to > rl_end)
- {
- to = rl_end;
- if (from > to)
- from = to;
- }
- if (from < 0)
- from = 0;
-
- text = rl_copy_text (from, to);
-
- /* Some versions of strncpy() can't handle overlapping arguments. */
- diff = to - from;
- for (i = from; i < rl_end - diff; i++)
- rl_line_buffer[i] = rl_line_buffer[i + diff];
-
- /* Remember how to undo this delete. */
- if (_rl_doing_an_undo == 0)
- rl_add_undo (UNDO_DELETE, from, to, text);
- else
- xfree (text);
-
- rl_end -= diff;
- rl_line_buffer[rl_end] = '\0';
- return (diff);
-}
-
-/* Fix up point so that it is within the line boundaries after killing
- text. If FIX_MARK_TOO is non-zero, the mark is forced within line
- boundaries also. */
-
-#define _RL_FIX_POINT(x) \
- do { \
- if (x > rl_end) \
- x = rl_end; \
- else if (x < 0) \
- x = 0; \
- } while (0)
-
-void
-_rl_fix_point (fix_mark_too)
- int fix_mark_too;
-{
- _RL_FIX_POINT (rl_point);
- if (fix_mark_too)
- _RL_FIX_POINT (rl_mark);
-}
-#undef _RL_FIX_POINT
-
-/* Replace the contents of the line buffer between START and END with
- TEXT. The operation is undoable. To replace the entire line in an
- undoable mode, use _rl_replace_text(text, 0, rl_end); */
-int
-_rl_replace_text (text, start, end)
- const char *text;
- int start, end;
-{
- int n;
-
- n = 0;
- rl_begin_undo_group ();
- if (start <= end)
- rl_delete_text (start, end + 1);
- rl_point = start;
- if (*text)
- n = rl_insert_text (text);
- rl_end_undo_group ();
-
- return n;
-}
-
-/* Replace the current line buffer contents with TEXT. If CLEAR_UNDO is
- non-zero, we free the current undo list. */
-void
-rl_replace_line (text, clear_undo)
- const char *text;
- int clear_undo;
-{
- int len;
-
- len = strlen (text);
- if (len >= rl_line_buffer_len)
- rl_extend_line_buffer (len);
- strcpy (rl_line_buffer, text);
- rl_end = len;
-
- if (clear_undo)
- rl_free_undo_list ();
-
- _rl_fix_point (1);
-}
-
-/* **************************************************************** */
-/* */
-/* Readline character functions */
-/* */
-/* **************************************************************** */
-
-/* This is not a gap editor, just a stupid line input routine. No hair
- is involved in writing any of the functions, and none should be. */
-
-/* Note that:
-
- rl_end is the place in the string that we would place '\0';
- i.e., it is always safe to place '\0' there.
-
- rl_point is the place in the string where the cursor is. Sometimes
- this is the same as rl_end.
-
- Any command that is called interactively receives two arguments.
- The first is a count: the numeric arg passed to this command.
- The second is the key which invoked this command.
-*/
-
-/* **************************************************************** */
-/* */
-/* Movement Commands */
-/* */
-/* **************************************************************** */
-
-/* Note that if you `optimize' the display for these functions, you cannot
- use said functions in other functions which do not do optimizing display.
- I.e., you will have to update the data base for rl_redisplay, and you
- might as well let rl_redisplay do that job. */
-
-/* Move forward COUNT bytes. */
-int
-rl_forward_byte (count, key)
- int count, key;
-{
- if (count < 0)
- return (rl_backward_byte (-count, key));
-
- if (count > 0)
- {
- int end, lend;
-
- end = rl_point + count;
-#if defined (VI_MODE)
- lend = rl_end > 0 ? rl_end - (VI_COMMAND_MODE()) : rl_end;
-#else
- lend = rl_end;
-#endif
-
- if (end > lend)
- {
- rl_point = lend;
- rl_ding ();
- }
- else
- rl_point = end;
- }
-
- if (rl_end < 0)
- rl_end = 0;
-
- return 0;
-}
-
-int
-_rl_forward_char_internal (count)
- int count;
-{
- int point;
-
-#if defined (HANDLE_MULTIBYTE)
- point = _rl_find_next_mbchar (rl_line_buffer, rl_point, count, MB_FIND_NONZERO);
-
-#if defined (VI_MODE)
- if (point >= rl_end && VI_COMMAND_MODE())
- point = _rl_find_prev_mbchar (rl_line_buffer, rl_end, MB_FIND_NONZERO);
-#endif
-
- if (rl_end < 0)
- rl_end = 0;
-#else
- point = rl_point + count;
- if (point > rl_end)
- point = rl_end;
-#endif
-
- return (point);
-}
-
-#if defined (HANDLE_MULTIBYTE)
-/* Move forward COUNT characters. */
-int
-rl_forward_char (count, key)
- int count, key;
-{
- int point;
-
- if (MB_CUR_MAX == 1 || rl_byte_oriented)
- return (rl_forward_byte (count, key));
-
- if (count < 0)
- return (rl_backward_char (-count, key));
-
- if (count > 0)
- {
- if (rl_point == rl_end && EMACS_MODE())
- {
- rl_ding ();
- return 0;
- }
-
- point = _rl_forward_char_internal (count);
-
- if (rl_point == point)
- rl_ding ();
-
- rl_point = point;
- }
-
- return 0;
-}
-#else /* !HANDLE_MULTIBYTE */
-int
-rl_forward_char (count, key)
- int count, key;
-{
- return (rl_forward_byte (count, key));
-}
-#endif /* !HANDLE_MULTIBYTE */
-
-/* Backwards compatibility. */
-int
-rl_forward (count, key)
- int count, key;
-{
- return (rl_forward_char (count, key));
-}
-
-/* Move backward COUNT bytes. */
-int
-rl_backward_byte (count, key)
- int count, key;
-{
- if (count < 0)
- return (rl_forward_byte (-count, key));
-
- if (count > 0)
- {
- if (rl_point < count)
- {
- rl_point = 0;
- rl_ding ();
- }
- else
- rl_point -= count;
- }
-
- if (rl_point < 0)
- rl_point = 0;
-
- return 0;
-}
-
-#if defined (HANDLE_MULTIBYTE)
-/* Move backward COUNT characters. */
-int
-rl_backward_char (count, key)
- int count, key;
-{
- int point;
-
- if (MB_CUR_MAX == 1 || rl_byte_oriented)
- return (rl_backward_byte (count, key));
-
- if (count < 0)
- return (rl_forward_char (-count, key));
-
- if (count > 0)
- {
- point = rl_point;
-
- while (count > 0 && point > 0)
- {
- point = _rl_find_prev_mbchar (rl_line_buffer, point, MB_FIND_NONZERO);
- count--;
- }
- if (count > 0)
- {
- rl_point = 0;
- rl_ding ();
- }
- else
- rl_point = point;
- }
-
- return 0;
-}
-#else
-int
-rl_backward_char (count, key)
- int count, key;
-{
- return (rl_backward_byte (count, key));
-}
-#endif
-
-/* Backwards compatibility. */
-int
-rl_backward (count, key)
- int count, key;
-{
- return (rl_backward_char (count, key));
-}
-
-/* Move to the beginning of the line. */
-int
-rl_beg_of_line (count, key)
- int count, key;
-{
- rl_point = 0;
- return 0;
-}
-
-/* Move to the end of the line. */
-int
-rl_end_of_line (count, key)
- int count, key;
-{
- rl_point = rl_end;
- return 0;
-}
-
-/* Move forward a word. We do what Emacs does. Handles multibyte chars. */
-int
-rl_forward_word (count, key)
- int count, key;
-{
- int c;
-
- if (count < 0)
- return (rl_backward_word (-count, key));
-
- while (count)
- {
- if (rl_point == rl_end)
- return 0;
-
- /* If we are not in a word, move forward until we are in one.
- Then, move forward until we hit a non-alphabetic character. */
- c = _rl_char_value (rl_line_buffer, rl_point);
-
- if (_rl_walphabetic (c) == 0)
- {
- rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
- while (rl_point < rl_end)
- {
- c = _rl_char_value (rl_line_buffer, rl_point);
- if (_rl_walphabetic (c))
- break;
- rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
- }
- }
-
- if (rl_point == rl_end)
- return 0;
-
- rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
- while (rl_point < rl_end)
- {
- c = _rl_char_value (rl_line_buffer, rl_point);
- if (_rl_walphabetic (c) == 0)
- break;
- rl_point = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
- }
-
- --count;
- }
-
- return 0;
-}
-
-/* Move backward a word. We do what Emacs does. Handles multibyte chars. */
-int
-rl_backward_word (count, key)
- int count, key;
-{
- int c, p;
-
- if (count < 0)
- return (rl_forward_word (-count, key));
-
- while (count)
- {
- if (rl_point == 0)
- return 0;
-
- /* Like rl_forward_word (), except that we look at the characters
- just before point. */
-
- p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
- c = _rl_char_value (rl_line_buffer, p);
-
- if (_rl_walphabetic (c) == 0)
- {
- rl_point = p;
- while (rl_point > 0)
- {
- p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
- c = _rl_char_value (rl_line_buffer, p);
- if (_rl_walphabetic (c))
- break;
- rl_point = p;
- }
- }
-
- while (rl_point)
- {
- p = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
- c = _rl_char_value (rl_line_buffer, p);
- if (_rl_walphabetic (c) == 0)
- break;
- else
- rl_point = p;
- }
-
- --count;
- }
-
- return 0;
-}
-
-/* Clear the current line. Numeric argument to C-l does this. */
-int
-rl_refresh_line (ignore1, ignore2)
- int ignore1, ignore2;
-{
- int curr_line;
-
- curr_line = _rl_current_display_line ();
-
- _rl_move_vert (curr_line);
- _rl_move_cursor_relative (0, rl_line_buffer); /* XXX is this right */
-
- _rl_clear_to_eol (0); /* arg of 0 means to not use spaces */
-
- rl_forced_update_display ();
- rl_display_fixed = 1;
-
- return 0;
-}
-
-/* C-l typed to a line without quoting clears the screen, and then reprints
- the prompt and the current input line. Given a numeric arg, redraw only
- the current line. */
-int
-rl_clear_screen (count, key)
- int count, key;
-{
- if (rl_explicit_arg)
- {
- rl_refresh_line (count, key);
- return 0;
- }
-
- _rl_clear_screen (); /* calls termcap function to clear screen */
- rl_forced_update_display ();
- rl_display_fixed = 1;
-
- return 0;
-}
-
-int
-rl_skip_csi_sequence (count, key)
- int count, key;
-{
- int ch;
-
- RL_SETSTATE (RL_STATE_MOREINPUT);
- do
- ch = rl_read_key ();
- while (ch >= 0x20 && ch < 0x40);
- RL_UNSETSTATE (RL_STATE_MOREINPUT);
-
- return 0;
-}
-
-int
-rl_arrow_keys (count, c)
- int count, c;
-{
- int ch;
-
- RL_SETSTATE(RL_STATE_MOREINPUT);
- ch = rl_read_key ();
- RL_UNSETSTATE(RL_STATE_MOREINPUT);
-
- switch (_rl_to_upper (ch))
- {
- case 'A':
- rl_get_previous_history (count, ch);
- break;
-
- case 'B':
- rl_get_next_history (count, ch);
- break;
-
- case 'C':
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- rl_forward_char (count, ch);
- else
- rl_forward_byte (count, ch);
- break;
-
- case 'D':
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- rl_backward_char (count, ch);
- else
- rl_backward_byte (count, ch);
- break;
-
- default:
- rl_ding ();
- }
-
- return 0;
-}
-
-/* **************************************************************** */
-/* */
-/* Text commands */
-/* */
-/* **************************************************************** */
-
-#ifdef HANDLE_MULTIBYTE
-static char pending_bytes[MB_LEN_MAX];
-static int pending_bytes_length = 0;
-static mbstate_t ps = {0};
-#endif
-
-/* Insert the character C at the current location, moving point forward.
- If C introduces a multibyte sequence, we read the whole sequence and
- then insert the multibyte char into the line buffer. */
-int
-_rl_insert_char (count, c)
- int count, c;
-{
- register int i;
- char *string;
-#ifdef HANDLE_MULTIBYTE
- int string_size;
- char incoming[MB_LEN_MAX + 1];
- int incoming_length = 0;
- mbstate_t ps_back;
- static int stored_count = 0;
-#endif
-
- if (count <= 0)
- return 0;
-
-#if defined (HANDLE_MULTIBYTE)
- if (MB_CUR_MAX == 1 || rl_byte_oriented)
- {
- incoming[0] = c;
- incoming[1] = '\0';
- incoming_length = 1;
- }
- else
- {
- wchar_t wc;
- size_t ret;
-
- if (stored_count <= 0)
- stored_count = count;
- else
- count = stored_count;
-
- ps_back = ps;
- pending_bytes[pending_bytes_length++] = c;
- ret = mbrtowc (&wc, pending_bytes, pending_bytes_length, &ps);
-
- if (ret == (size_t)-2)
- {
- /* Bytes too short to compose character, try to wait for next byte.
- Restore the state of the byte sequence, because in this case the
- effect of mbstate is undefined. */
- ps = ps_back;
- return 1;
- }
- else if (ret == (size_t)-1)
- {
- /* Invalid byte sequence for the current locale. Treat first byte
- as a single character. */
- incoming[0] = pending_bytes[0];
- incoming[1] = '\0';
- incoming_length = 1;
- pending_bytes_length--;
- memmove (pending_bytes, pending_bytes + 1, pending_bytes_length);
- /* Clear the state of the byte sequence, because in this case the
- effect of mbstate is undefined. */
- memset (&ps, 0, sizeof (mbstate_t));
- }
- else if (ret == (size_t)0)
- {
- incoming[0] = '\0';
- incoming_length = 0;
- pending_bytes_length--;
- /* Clear the state of the byte sequence, because in this case the
- effect of mbstate is undefined. */
- memset (&ps, 0, sizeof (mbstate_t));
- }
- else
- {
- /* We successfully read a single multibyte character. */
- memcpy (incoming, pending_bytes, pending_bytes_length);
- incoming[pending_bytes_length] = '\0';
- incoming_length = pending_bytes_length;
- pending_bytes_length = 0;
- }
- }
-#endif /* HANDLE_MULTIBYTE */
-
- /* If we can optimize, then do it. But don't let people crash
- readline because of extra large arguments. */
- if (count > 1 && count <= TEXT_COUNT_MAX)
- {
-#if defined (HANDLE_MULTIBYTE)
- string_size = count * incoming_length;
- string = (char *)xmalloc (1 + string_size);
-
- i = 0;
- while (i < string_size)
- {
- strncpy (string + i, incoming, incoming_length);
- i += incoming_length;
- }
- incoming_length = 0;
- stored_count = 0;
-#else /* !HANDLE_MULTIBYTE */
- string = (char *)xmalloc (1 + count);
-
- for (i = 0; i < count; i++)
- string[i] = c;
-#endif /* !HANDLE_MULTIBYTE */
-
- string[i] = '\0';
- rl_insert_text (string);
- xfree (string);
-
- return 0;
- }
-
- if (count > TEXT_COUNT_MAX)
- {
- int decreaser;
-#if defined (HANDLE_MULTIBYTE)
- string_size = incoming_length * TEXT_COUNT_MAX;
- string = (char *)xmalloc (1 + string_size);
-
- i = 0;
- while (i < string_size)
- {
- strncpy (string + i, incoming, incoming_length);
- i += incoming_length;
- }
-
- while (count)
- {
- decreaser = (count > TEXT_COUNT_MAX) ? TEXT_COUNT_MAX : count;
- string[decreaser*incoming_length] = '\0';
- rl_insert_text (string);
- count -= decreaser;
- }
-
- xfree (string);
- incoming_length = 0;
- stored_count = 0;
-#else /* !HANDLE_MULTIBYTE */
- char str[TEXT_COUNT_MAX+1];
-
- for (i = 0; i < TEXT_COUNT_MAX; i++)
- str[i] = c;
-
- while (count)
- {
- decreaser = (count > TEXT_COUNT_MAX ? TEXT_COUNT_MAX : count);
- str[decreaser] = '\0';
- rl_insert_text (str);
- count -= decreaser;
- }
-#endif /* !HANDLE_MULTIBYTE */
-
- return 0;
- }
-
- if (MB_CUR_MAX == 1 || rl_byte_oriented)
- {
- /* We are inserting a single character.
- If there is pending input, then make a string of all of the
- pending characters that are bound to rl_insert, and insert
- them all. Don't do this if we're current reading input from
- a macro. */
- if ((RL_ISSTATE (RL_STATE_MACROINPUT) == 0) && _rl_pushed_input_available ())
- _rl_insert_typein (c);
- else
- {
- /* Inserting a single character. */
- char str[2];
-
- str[1] = '\0';
- str[0] = c;
- rl_insert_text (str);
- }
- }
-#if defined (HANDLE_MULTIBYTE)
- else
- {
- rl_insert_text (incoming);
- stored_count = 0;
- }
-#endif
-
- return 0;
-}
-
-/* Overwrite the character at point (or next COUNT characters) with C.
- If C introduces a multibyte character sequence, read the entire sequence
- before starting the overwrite loop. */
-int
-_rl_overwrite_char (count, c)
- int count, c;
-{
- int i;
-#if defined (HANDLE_MULTIBYTE)
- char mbkey[MB_LEN_MAX];
- int k;
-
- /* Read an entire multibyte character sequence to insert COUNT times. */
- if (count > 0 && MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- k = _rl_read_mbstring (c, mbkey, MB_LEN_MAX);
-#endif
-
- rl_begin_undo_group ();
-
- for (i = 0; i < count; i++)
- {
-#if defined (HANDLE_MULTIBYTE)
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- rl_insert_text (mbkey);
- else
-#endif
- _rl_insert_char (1, c);
-
- if (rl_point < rl_end)
- rl_delete (1, c);
- }
-
- rl_end_undo_group ();
-
- return 0;
-}
-
-int
-rl_insert (count, c)
- int count, c;
-{
- return (rl_insert_mode == RL_IM_INSERT ? _rl_insert_char (count, c)
- : _rl_overwrite_char (count, c));
-}
-
-/* Insert the next typed character verbatim. */
-static int
-_rl_insert_next (count)
- int count;
-{
- int c;
-
- RL_SETSTATE(RL_STATE_MOREINPUT);
- c = rl_read_key ();
- RL_UNSETSTATE(RL_STATE_MOREINPUT);
-
- if (c < 0)
- return 1;
-
- if (RL_ISSTATE (RL_STATE_MACRODEF))
- _rl_add_macro_char (c);
-
-#if defined (HANDLE_SIGNALS)
- if (RL_ISSTATE (RL_STATE_CALLBACK) == 0)
- _rl_restore_tty_signals ();
-#endif
-
- return (_rl_insert_char (count, c));
-}
-
-#if defined (READLINE_CALLBACKS)
-static int
-_rl_insert_next_callback (data)
- _rl_callback_generic_arg *data;
-{
- int count;
-
- count = data->count;
-
- /* Deregister function, let rl_callback_read_char deallocate data */
- _rl_callback_func = 0;
- _rl_want_redisplay = 1;
-
- return _rl_insert_next (count);
-}
-#endif
-
-int
-rl_quoted_insert (count, key)
- int count, key;
-{
- /* Let's see...should the callback interface futz with signal handling? */
-#if defined (HANDLE_SIGNALS)
- if (RL_ISSTATE (RL_STATE_CALLBACK) == 0)
- _rl_disable_tty_signals ();
-#endif
-
-#if defined (READLINE_CALLBACKS)
- if (RL_ISSTATE (RL_STATE_CALLBACK))
- {
- _rl_callback_data = _rl_callback_data_alloc (count);
- _rl_callback_func = _rl_insert_next_callback;
- return (0);
- }
-#endif
-
- return _rl_insert_next (count);
-}
-
-/* Insert a tab character. */
-int
-rl_tab_insert (count, key)
- int count, key;
-{
- return (_rl_insert_char (count, '\t'));
-}
-
-/* What to do when a NEWLINE is pressed. We accept the whole line.
- KEY is the key that invoked this command. I guess it could have
- meaning in the future. */
-int
-rl_newline (count, key)
- int count, key;
-{
- rl_done = 1;
-
- if (_rl_history_preserve_point)
- _rl_history_saved_point = (rl_point == rl_end) ? -1 : rl_point;
-
- RL_SETSTATE(RL_STATE_DONE);
-
-#if defined (VI_MODE)
- if (rl_editing_mode == vi_mode)
- {
- _rl_vi_done_inserting ();
- if (_rl_vi_textmod_command (_rl_vi_last_command) == 0) /* XXX */
- _rl_vi_reset_last ();
- }
-#endif /* VI_MODE */
-
- /* If we've been asked to erase empty lines, suppress the final update,
- since _rl_update_final calls rl_crlf(). */
- if (rl_erase_empty_line && rl_point == 0 && rl_end == 0)
- return 0;
-
- if (_rl_echoing_p)
- _rl_update_final ();
- return 0;
-}
-
-/* What to do for some uppercase characters, like meta characters,
- and some characters appearing in emacs_ctlx_keymap. This function
- is just a stub, you bind keys to it and the code in _rl_dispatch ()
- is special cased. */
-int
-rl_do_lowercase_version (ignore1, ignore2)
- int ignore1, ignore2;
-{
- return 0;
-}
-
-/* This is different from what vi does, so the code's not shared. Emacs
- rubout in overwrite mode has one oddity: it replaces a control
- character that's displayed as two characters (^X) with two spaces. */
-int
-_rl_overwrite_rubout (count, key)
- int count, key;
-{
- int opoint;
- int i, l;
-
- if (rl_point == 0)
- {
- rl_ding ();
- return 1;
- }
-
- opoint = rl_point;
-
- /* L == number of spaces to insert */
- for (i = l = 0; i < count; i++)
- {
- rl_backward_char (1, key);
- l += rl_character_len (rl_line_buffer[rl_point], rl_point); /* not exactly right */
- }
-
- rl_begin_undo_group ();
-
- if (count > 1 || rl_explicit_arg)
- rl_kill_text (opoint, rl_point);
- else
- rl_delete_text (opoint, rl_point);
-
- /* Emacs puts point at the beginning of the sequence of spaces. */
- if (rl_point < rl_end)
- {
- opoint = rl_point;
- _rl_insert_char (l, ' ');
- rl_point = opoint;
- }
-
- rl_end_undo_group ();
-
- return 0;
-}
-
-/* Rubout the character behind point. */
-int
-rl_rubout (count, key)
- int count, key;
-{
- if (count < 0)
- return (rl_delete (-count, key));
-
- if (!rl_point)
- {
- rl_ding ();
- return 1;
- }
-
- if (rl_insert_mode == RL_IM_OVERWRITE)
- return (_rl_overwrite_rubout (count, key));
-
- return (_rl_rubout_char (count, key));
-}
-
-int
-_rl_rubout_char (count, key)
- int count, key;
-{
- int orig_point;
- unsigned char c;
-
- /* Duplicated code because this is called from other parts of the library. */
- if (count < 0)
- return (rl_delete (-count, key));
-
- if (rl_point == 0)
- {
- rl_ding ();
- return 1;
- }
-
- orig_point = rl_point;
- if (count > 1 || rl_explicit_arg)
- {
- rl_backward_char (count, key);
- rl_kill_text (orig_point, rl_point);
- }
- else if (MB_CUR_MAX == 1 || rl_byte_oriented)
- {
- c = rl_line_buffer[--rl_point];
- rl_delete_text (rl_point, orig_point);
- /* The erase-at-end-of-line hack is of questionable merit now. */
- if (rl_point == rl_end && ISPRINT (c) && _rl_last_c_pos)
- {
- int l;
- l = rl_character_len (c, rl_point);
- _rl_erase_at_end_of_line (l);
- }
- }
- else
- {
- rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO);
- rl_delete_text (rl_point, orig_point);
- }
-
- return 0;
-}
-
-/* Delete the character under the cursor. Given a numeric argument,
- kill that many characters instead. */
-int
-rl_delete (count, key)
- int count, key;
-{
- int xpoint;
-
- if (count < 0)
- return (_rl_rubout_char (-count, key));
-
- if (rl_point == rl_end)
- {
- rl_ding ();
- return 1;
- }
-
- if (count > 1 || rl_explicit_arg)
- {
- xpoint = rl_point;
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- rl_forward_char (count, key);
- else
- rl_forward_byte (count, key);
-
- rl_kill_text (xpoint, rl_point);
- rl_point = xpoint;
- }
- else
- {
- xpoint = MB_NEXTCHAR (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
- rl_delete_text (rl_point, xpoint);
- }
- return 0;
-}
-
-/* Delete the character under the cursor, unless the insertion
- point is at the end of the line, in which case the character
- behind the cursor is deleted. COUNT is obeyed and may be used
- to delete forward or backward that many characters. */
-int
-rl_rubout_or_delete (count, key)
- int count, key;
-{
- if (rl_end != 0 && rl_point == rl_end)
- return (_rl_rubout_char (count, key));
- else
- return (rl_delete (count, key));
-}
-
-/* Delete all spaces and tabs around point. */
-int
-rl_delete_horizontal_space (count, ignore)
- int count, ignore;
-{
- int start;
-
- while (rl_point && whitespace (rl_line_buffer[rl_point - 1]))
- rl_point--;
-
- start = rl_point;
-
- while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- if (start != rl_point)
- {
- rl_delete_text (start, rl_point);
- rl_point = start;
- }
-
- if (rl_point < 0)
- rl_point = 0;
-
- return 0;
-}
-
-/* Like the tcsh editing function delete-char-or-list. The eof character
- is caught before this is invoked, so this really does the same thing as
- delete-char-or-list-or-eof, as long as it's bound to the eof character. */
-int
-rl_delete_or_show_completions (count, key)
- int count, key;
-{
- if (rl_end != 0 && rl_point == rl_end)
- return (rl_possible_completions (count, key));
- else
- return (rl_delete (count, key));
-}
-
-#ifndef RL_COMMENT_BEGIN_DEFAULT
-#define RL_COMMENT_BEGIN_DEFAULT "#"
-#endif
-
-/* Turn the current line into a comment in shell history.
- A K*rn shell style function. */
-int
-rl_insert_comment (count, key)
- int count, key;
-{
- char *rl_comment_text;
- int rl_comment_len;
-
- rl_beg_of_line (1, key);
- rl_comment_text = _rl_comment_begin ? _rl_comment_begin : RL_COMMENT_BEGIN_DEFAULT;
-
- if (rl_explicit_arg == 0)
- rl_insert_text (rl_comment_text);
- else
- {
- rl_comment_len = strlen (rl_comment_text);
- if (STREQN (rl_comment_text, rl_line_buffer, rl_comment_len))
- rl_delete_text (rl_point, rl_point + rl_comment_len);
- else
- rl_insert_text (rl_comment_text);
- }
-
- (*rl_redisplay_function) ();
- rl_newline (1, '\n');
-
- return (0);
-}
-
-/* **************************************************************** */
-/* */
-/* Changing Case */
-/* */
-/* **************************************************************** */
-
-/* The three kinds of things that we know how to do. */
-#define UpCase 1
-#define DownCase 2
-#define CapCase 3
-
-/* Uppercase the word at point. */
-int
-rl_upcase_word (count, key)
- int count, key;
-{
- return (rl_change_case (count, UpCase));
-}
-
-/* Lowercase the word at point. */
-int
-rl_downcase_word (count, key)
- int count, key;
-{
- return (rl_change_case (count, DownCase));
-}
-
-/* Upcase the first letter, downcase the rest. */
-int
-rl_capitalize_word (count, key)
- int count, key;
-{
- return (rl_change_case (count, CapCase));
-}
-
-/* The meaty function.
- Change the case of COUNT words, performing OP on them.
- OP is one of UpCase, DownCase, or CapCase.
- If a negative argument is given, leave point where it started,
- otherwise, leave it where it moves to. */
-static int
-rl_change_case (count, op)
- int count, op;
-{
- int start, next, end;
- int inword, c, nc, nop;
-#if defined (HANDLE_MULTIBYTE)
- wchar_t wc, nwc;
- char mb[MB_LEN_MAX+1];
- int mlen;
- size_t m;
- mbstate_t mps;
-#endif
-
- start = rl_point;
- rl_forward_word (count, 0);
- end = rl_point;
-
- if (op != UpCase && op != DownCase && op != CapCase)
- {
- rl_ding ();
- return 1;
- }
-
- if (count < 0)
- SWAP (start, end);
-
-#if defined (HANDLE_MULTIBYTE)
- memset (&mps, 0, sizeof (mbstate_t));
-#endif
-
- /* We are going to modify some text, so let's prepare to undo it. */
- rl_modifying (start, end);
-
- inword = 0;
- while (start < end)
- {
- c = _rl_char_value (rl_line_buffer, start);
- /* This assumes that the upper and lower case versions are the same width. */
- next = MB_NEXTCHAR (rl_line_buffer, start, 1, MB_FIND_NONZERO);
-
- if (_rl_walphabetic (c) == 0)
- {
- inword = 0;
- start = next;
- continue;
- }
-
- if (op == CapCase)
- {
- nop = inword ? DownCase : UpCase;
- inword = 1;
- }
- else
- nop = op;
- if (MB_CUR_MAX == 1 || rl_byte_oriented || isascii ((unsigned char)c))
- {
- nc = (nop == UpCase) ? _rl_to_upper (c) : _rl_to_lower (c);
- rl_line_buffer[start] = nc;
- }
-#if defined (HANDLE_MULTIBYTE)
- else
- {
- m = mbrtowc (&wc, rl_line_buffer + start, end - start, &mps);
- if (MB_INVALIDCH (m))
- wc = (wchar_t)rl_line_buffer[start];
- else if (MB_NULLWCH (m))
- wc = L'\0';
- nwc = (nop == UpCase) ? _rl_to_wupper (wc) : _rl_to_wlower (wc);
- if (nwc != wc) /* just skip unchanged characters */
- {
- mlen = wcrtomb (mb, nwc, &mps);
- if (mlen > 0)
- mb[mlen] = '\0';
- /* Assume the same width */
- strncpy (rl_line_buffer + start, mb, mlen);
- }
- }
-#endif
-
- start = next;
- }
-
- rl_point = end;
- return 0;
-}
-
-/* **************************************************************** */
-/* */
-/* Transposition */
-/* */
-/* **************************************************************** */
-
-/* Transpose the words at point. If point is at the end of the line,
- transpose the two words before point. */
-int
-rl_transpose_words (count, key)
- int count, key;
-{
- char *word1, *word2;
- int w1_beg, w1_end, w2_beg, w2_end;
- int orig_point = rl_point;
-
- if (!count)
- return 0;
-
- /* Find the two words. */
- rl_forward_word (count, key);
- w2_end = rl_point;
- rl_backward_word (1, key);
- w2_beg = rl_point;
- rl_backward_word (count, key);
- w1_beg = rl_point;
- rl_forward_word (1, key);
- w1_end = rl_point;
-
- /* Do some check to make sure that there really are two words. */
- if ((w1_beg == w2_beg) || (w2_beg < w1_end))
- {
- rl_ding ();
- rl_point = orig_point;
- return 1;
- }
-
- /* Get the text of the words. */
- word1 = rl_copy_text (w1_beg, w1_end);
- word2 = rl_copy_text (w2_beg, w2_end);
-
- /* We are about to do many insertions and deletions. Remember them
- as one operation. */
- rl_begin_undo_group ();
-
- /* Do the stuff at word2 first, so that we don't have to worry
- about word1 moving. */
- rl_point = w2_beg;
- rl_delete_text (w2_beg, w2_end);
- rl_insert_text (word1);
-
- rl_point = w1_beg;
- rl_delete_text (w1_beg, w1_end);
- rl_insert_text (word2);
-
- /* This is exactly correct since the text before this point has not
- changed in length. */
- rl_point = w2_end;
-
- /* I think that does it. */
- rl_end_undo_group ();
- xfree (word1);
- xfree (word2);
-
- return 0;
-}
-
-/* Transpose the characters at point. If point is at the end of the line,
- then transpose the characters before point. */
-int
-rl_transpose_chars (count, key)
- int count, key;
-{
-#if defined (HANDLE_MULTIBYTE)
- char *dummy;
- int i;
-#else
- char dummy[2];
-#endif
- int char_length, prev_point;
-
- if (count == 0)
- return 0;
-
- if (!rl_point || rl_end < 2)
- {
- rl_ding ();
- return 1;
- }
-
- rl_begin_undo_group ();
-
- if (rl_point == rl_end)
- {
- rl_point = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
- count = 1;
- }
-
- prev_point = rl_point;
- rl_point = MB_PREVCHAR (rl_line_buffer, rl_point, MB_FIND_NONZERO);
-
-#if defined (HANDLE_MULTIBYTE)
- char_length = prev_point - rl_point;
- dummy = (char *)xmalloc (char_length + 1);
- for (i = 0; i < char_length; i++)
- dummy[i] = rl_line_buffer[rl_point + i];
- dummy[i] = '\0';
-#else
- dummy[0] = rl_line_buffer[rl_point];
- dummy[char_length = 1] = '\0';
-#endif
-
- rl_delete_text (rl_point, rl_point + char_length);
-
- rl_point = _rl_find_next_mbchar (rl_line_buffer, rl_point, count, MB_FIND_NONZERO);
-
- _rl_fix_point (0);
- rl_insert_text (dummy);
- rl_end_undo_group ();
-
-#if defined (HANDLE_MULTIBYTE)
- xfree (dummy);
-#endif
-
- return 0;
-}
-
-/* **************************************************************** */
-/* */
-/* Character Searching */
-/* */
-/* **************************************************************** */
-
-int
-#if defined (HANDLE_MULTIBYTE)
-_rl_char_search_internal (count, dir, smbchar, len)
- int count, dir;
- char *smbchar;
- int len;
-#else
-_rl_char_search_internal (count, dir, schar)
- int count, dir, schar;
-#endif
-{
- int pos, inc;
-#if defined (HANDLE_MULTIBYTE)
- int prepos;
-#endif
-
- if (dir == 0)
- return 1;
-
- pos = rl_point;
- inc = (dir < 0) ? -1 : 1;
- while (count)
- {
- if ((dir < 0 && pos <= 0) || (dir > 0 && pos >= rl_end))
- {
- rl_ding ();
- return 1;
- }
-
-#if defined (HANDLE_MULTIBYTE)
- pos = (inc > 0) ? _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY)
- : _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY);
-#else
- pos += inc;
-#endif
- do
- {
-#if defined (HANDLE_MULTIBYTE)
- if (_rl_is_mbchar_matched (rl_line_buffer, pos, rl_end, smbchar, len))
-#else
- if (rl_line_buffer[pos] == schar)
-#endif
- {
- count--;
- if (dir < 0)
- rl_point = (dir == BTO) ? _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY)
- : pos;
- else
- rl_point = (dir == FTO) ? _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY)
- : pos;
- break;
- }
-#if defined (HANDLE_MULTIBYTE)
- prepos = pos;
-#endif
- }
-#if defined (HANDLE_MULTIBYTE)
- while ((dir < 0) ? (pos = _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY)) != prepos
- : (pos = _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY)) != prepos);
-#else
- while ((dir < 0) ? pos-- : ++pos < rl_end);
-#endif
- }
- return (0);
-}
-
-/* Search COUNT times for a character read from the current input stream.
- FDIR is the direction to search if COUNT is non-negative; otherwise
- the search goes in BDIR. So much is dependent on HANDLE_MULTIBYTE
- that there are two separate versions of this function. */
-#if defined (HANDLE_MULTIBYTE)
-static int
-_rl_char_search (count, fdir, bdir)
- int count, fdir, bdir;
-{
- char mbchar[MB_LEN_MAX];
- int mb_len;
-
- mb_len = _rl_read_mbchar (mbchar, MB_LEN_MAX);
-
- if (mb_len <= 0)
- return 1;
-
- if (count < 0)
- return (_rl_char_search_internal (-count, bdir, mbchar, mb_len));
- else
- return (_rl_char_search_internal (count, fdir, mbchar, mb_len));
-}
-#else /* !HANDLE_MULTIBYTE */
-static int
-_rl_char_search (count, fdir, bdir)
- int count, fdir, bdir;
-{
- int c;
-
- RL_SETSTATE(RL_STATE_MOREINPUT);
- c = rl_read_key ();
- RL_UNSETSTATE(RL_STATE_MOREINPUT);
-
- if (c < 0)
- return 1;
-
- if (count < 0)
- return (_rl_char_search_internal (-count, bdir, c));
- else
- return (_rl_char_search_internal (count, fdir, c));
-}
-#endif /* !HANDLE_MULTIBYTE */
-
-#if defined (READLINE_CALLBACKS)
-static int
-_rl_char_search_callback (data)
- _rl_callback_generic_arg *data;
-{
- _rl_callback_func = 0;
- _rl_want_redisplay = 1;
-
- return (_rl_char_search (data->count, data->i1, data->i2));
-}
-#endif
-
-int
-rl_char_search (count, key)
- int count, key;
-{
-#if defined (READLINE_CALLBACKS)
- if (RL_ISSTATE (RL_STATE_CALLBACK))
- {
- _rl_callback_data = _rl_callback_data_alloc (count);
- _rl_callback_data->i1 = FFIND;
- _rl_callback_data->i2 = BFIND;
- _rl_callback_func = _rl_char_search_callback;
- return (0);
- }
-#endif
-
- return (_rl_char_search (count, FFIND, BFIND));
-}
-
-int
-rl_backward_char_search (count, key)
- int count, key;
-{
-#if defined (READLINE_CALLBACKS)
- if (RL_ISSTATE (RL_STATE_CALLBACK))
- {
- _rl_callback_data = _rl_callback_data_alloc (count);
- _rl_callback_data->i1 = BFIND;
- _rl_callback_data->i2 = FFIND;
- _rl_callback_func = _rl_char_search_callback;
- return (0);
- }
-#endif
-
- return (_rl_char_search (count, BFIND, FFIND));
-}
-
-/* **************************************************************** */
-/* */
-/* The Mark and the Region. */
-/* */
-/* **************************************************************** */
-
-/* Set the mark at POSITION. */
-int
-_rl_set_mark_at_pos (position)
- int position;
-{
- if (position > rl_end)
- return 1;
-
- rl_mark = position;
- return 0;
-}
-
-/* A bindable command to set the mark. */
-int
-rl_set_mark (count, key)
- int count, key;
-{
- return (_rl_set_mark_at_pos (rl_explicit_arg ? count : rl_point));
-}
-
-/* Exchange the position of mark and point. */
-int
-rl_exchange_point_and_mark (count, key)
- int count, key;
-{
- if (rl_mark > rl_end)
- rl_mark = -1;
-
- if (rl_mark == -1)
- {
- rl_ding ();
- return 1;
- }
- else
- SWAP (rl_point, rl_mark);
-
- return 0;
-}
+++ /dev/null
-/* vi_mode.c -- A vi emulation mode for Bash.
- Derived from code written by Jeff Sparkes (jsparkes@bnr.ca). */
-
-/* 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 <http://www.gnu.org/licenses/>.
-*/
-
-#define READLINE_LIBRARY
-
-/* **************************************************************** */
-/* */
-/* VI Emulation Mode */
-/* */
-/* **************************************************************** */
-#include "rlconf.h"
-
-#if defined (VI_MODE)
-
-#if defined (HAVE_CONFIG_H)
-# include <config.h>
-#endif
-
-#include <sys/types.h>
-
-#if defined (HAVE_STDLIB_H)
-# include <stdlib.h>
-#else
-# include "ansi_stdlib.h"
-#endif /* HAVE_STDLIB_H */
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
-
-#include <stdio.h>
-
-/* Some standard library routines. */
-#include "rldefs.h"
-#include "rlmbutil.h"
-
-#include "readline.h"
-#include "history.h"
-
-#include "rlprivate.h"
-#include "xmalloc.h"
-
-#ifndef member
-#define member(c, s) ((c) ? (char *)strchr ((s), (c)) != (char *)NULL : 0)
-#endif
-
-int _rl_vi_last_command = 'i'; /* default `.' puts you in insert mode */
-
-_rl_vimotion_cxt *_rl_vimvcxt = 0;
-
-/* Non-zero means enter insertion mode. */
-static int _rl_vi_doing_insert;
-
-/* Command keys which do movement for xxx_to commands. */
-static const char * const vi_motion = " hl^$0ftFT;,%wbeWBE|`";
-
-/* Keymap used for vi replace characters. Created dynamically since
- rarely used. */
-static Keymap vi_replace_map;
-
-/* The number of characters inserted in the last replace operation. */
-static int vi_replace_count;
-
-/* If non-zero, we have text inserted after a c[motion] command that put
- us implicitly into insert mode. Some people want this text to be
- attached to the command so that it is `redoable' with `.'. */
-static int vi_continued_command;
-static char *vi_insert_buffer;
-static int vi_insert_buffer_size;
-
-static int _rl_vi_last_repeat = 1;
-static int _rl_vi_last_arg_sign = 1;
-static int _rl_vi_last_motion;
-#if defined (HANDLE_MULTIBYTE)
-static char _rl_vi_last_search_mbchar[MB_LEN_MAX];
-static int _rl_vi_last_search_mblen;
-#else
-static int _rl_vi_last_search_char;
-#endif
-static int _rl_vi_last_replacement;
-
-static int _rl_vi_last_key_before_insert;
-
-static int vi_redoing;
-
-/* Text modification commands. These are the `redoable' commands. */
-static const char * const vi_textmod = "_*\\AaIiCcDdPpYyRrSsXx~";
-
-/* Arrays for the saved marks. */
-static int vi_mark_chars['z' - 'a' + 1];
-
-static void _rl_vi_replace_insert PARAMS((int));
-static void _rl_vi_save_replace PARAMS((void));
-static void _rl_vi_stuff_insert PARAMS((int));
-static void _rl_vi_save_insert PARAMS((UNDO_LIST *));
-
-static void vi_save_insert_buffer PARAMS ((int, int));
-
-static void _rl_vi_backup PARAMS((void));
-
-static int _rl_vi_arg_dispatch PARAMS((int));
-static int rl_digit_loop1 PARAMS((void));
-
-static int _rl_vi_set_mark PARAMS((void));
-static int _rl_vi_goto_mark PARAMS((void));
-
-static void _rl_vi_append_forward PARAMS((int));
-
-static int _rl_vi_callback_getchar PARAMS((char *, int));
-
-#if defined (READLINE_CALLBACKS)
-static int _rl_vi_callback_set_mark PARAMS((_rl_callback_generic_arg *));
-static int _rl_vi_callback_goto_mark PARAMS((_rl_callback_generic_arg *));
-static int _rl_vi_callback_change_char PARAMS((_rl_callback_generic_arg *));
-static int _rl_vi_callback_char_search PARAMS((_rl_callback_generic_arg *));
-#endif
-
-static int rl_domove_read_callback PARAMS((_rl_vimotion_cxt *));
-static int rl_domove_motion_callback PARAMS((_rl_vimotion_cxt *));
-static int rl_vi_domove_getchar PARAMS((_rl_vimotion_cxt *));
-
-static int vi_change_dispatch PARAMS((_rl_vimotion_cxt *));
-static int vi_delete_dispatch PARAMS((_rl_vimotion_cxt *));
-static int vi_yank_dispatch PARAMS((_rl_vimotion_cxt *));
-
-static int vidomove_dispatch PARAMS((_rl_vimotion_cxt *));
-
-void
-_rl_vi_initialize_line ()
-{
- register int i, n;
-
- n = sizeof (vi_mark_chars) / sizeof (vi_mark_chars[0]);
- for (i = 0; i < n; i++)
- vi_mark_chars[i] = -1;
-
- RL_UNSETSTATE(RL_STATE_VICMDONCE);
-}
-
-void
-_rl_vi_reset_last ()
-{
- _rl_vi_last_command = 'i';
- _rl_vi_last_repeat = 1;
- _rl_vi_last_arg_sign = 1;
- _rl_vi_last_motion = 0;
-}
-
-void
-_rl_vi_set_last (key, repeat, sign)
- int key, repeat, sign;
-{
- _rl_vi_last_command = key;
- _rl_vi_last_repeat = repeat;
- _rl_vi_last_arg_sign = sign;
-}
-
-/* A convenience function that calls _rl_vi_set_last to save the last command
- information and enters insertion mode. */
-void
-rl_vi_start_inserting (key, repeat, sign)
- int key, repeat, sign;
-{
- _rl_vi_set_last (key, repeat, sign);
- rl_vi_insertion_mode (1, key);
-}
-
-/* Is the command C a VI mode text modification command? */
-int
-_rl_vi_textmod_command (c)
- int c;
-{
- return (member (c, vi_textmod));
-}
-
-int
-_rl_vi_motion_command (c)
- int c;
-{
- return (member (c, vi_motion));
-}
-
-static void
-_rl_vi_replace_insert (count)
- int count;
-{
- int nchars;
-
- nchars = strlen (vi_insert_buffer);
-
- rl_begin_undo_group ();
- while (count--)
- /* nchars-1 to compensate for _rl_replace_text using `end+1' in call
- to rl_delete_text */
- _rl_replace_text (vi_insert_buffer, rl_point, rl_point+nchars-1);
- rl_end_undo_group ();
-}
-
-static void
-_rl_vi_stuff_insert (count)
- int count;
-{
- rl_begin_undo_group ();
- while (count--)
- rl_insert_text (vi_insert_buffer);
- rl_end_undo_group ();
-}
-
-/* Bound to `.'. Called from command mode, so we know that we have to
- redo a text modification command. The default for _rl_vi_last_command
- puts you back into insert mode. */
-int
-rl_vi_redo (count, c)
- int count, c;
-{
- int r;
-
- if (rl_explicit_arg == 0)
- {
- rl_numeric_arg = _rl_vi_last_repeat;
- rl_arg_sign = _rl_vi_last_arg_sign;
- }
-
- r = 0;
- vi_redoing = 1;
- /* If we're redoing an insert with `i', stuff in the inserted text
- and do not go into insertion mode. */
- if (_rl_vi_last_command == 'i' && vi_insert_buffer && *vi_insert_buffer)
- {
- _rl_vi_stuff_insert (count);
- /* And back up point over the last character inserted. */
- if (rl_point > 0)
- _rl_vi_backup ();
- }
- else if (_rl_vi_last_command == 'R' && vi_insert_buffer && *vi_insert_buffer)
- {
- _rl_vi_replace_insert (count);
- /* And back up point over the last character inserted. */
- if (rl_point > 0)
- _rl_vi_backup ();
- }
- /* Ditto for redoing an insert with `I', but move to the beginning of the
- line like the `I' command does. */
- else if (_rl_vi_last_command == 'I' && vi_insert_buffer && *vi_insert_buffer)
- {
- rl_beg_of_line (1, 'I');
- _rl_vi_stuff_insert (count);
- if (rl_point > 0)
- _rl_vi_backup ();
- }
- /* Ditto for redoing an insert with `a', but move forward a character first
- like the `a' command does. */
- else if (_rl_vi_last_command == 'a' && vi_insert_buffer && *vi_insert_buffer)
- {
- _rl_vi_append_forward ('a');
- _rl_vi_stuff_insert (count);
- if (rl_point > 0)
- _rl_vi_backup ();
- }
- /* Ditto for redoing an insert with `A', but move to the end of the line
- like the `A' command does. */
- else if (_rl_vi_last_command == 'A' && vi_insert_buffer && *vi_insert_buffer)
- {
- rl_end_of_line (1, 'A');
- _rl_vi_stuff_insert (count);
- if (rl_point > 0)
- _rl_vi_backup ();
- }
- else
- r = _rl_dispatch (_rl_vi_last_command, _rl_keymap);
- vi_redoing = 0;
-
- return (r);
-}
-
-/* A placeholder for further expansion. */
-int
-rl_vi_undo (count, key)
- int count, key;
-{
- return (rl_undo_command (count, key));
-}
-
-/* Yank the nth arg from the previous line into this line at point. */
-int
-rl_vi_yank_arg (count, key)
- int count, key;
-{
- /* Readline thinks that the first word on a line is the 0th, while vi
- thinks the first word on a line is the 1st. Compensate. */
- if (rl_explicit_arg)
- rl_yank_nth_arg (count - 1, 0);
- else
- rl_yank_nth_arg ('$', 0);
-
- return (0);
-}
-
-int
-rl_vi_yank_pop (count, key)
- int count, key;
-{
- int l, n;
-
- if (((rl_last_func != rl_vi_yank_pop) && (rl_last_func != rl_vi_put)) ||
- !rl_kill_ring)
- {
- _rl_abort_internal ();
- return 1;
- }
-
- l = strlen (rl_kill_ring[rl_kill_index]);
- n = rl_point - l;
- if (n >= 0 && STREQN (rl_line_buffer + n, rl_kill_ring[rl_kill_index], l))
- {
- rl_delete_text (n, rl_point);
- rl_point = n;
- rl_kill_index--;
- if (rl_kill_index < 0)
- rl_kill_index = rl_kill_ring_length - 1;
- rl_vi_put (1, 'p');
- return 0;
- }
- else
- {
- _rl_abort_internal ();
- return 1;
- }
-}
-
-/* With an argument, move back that many history lines, else move to the
- beginning of history. */
-int
-rl_vi_fetch_history (count, c)
- int count, c;
-{
- int wanted;
-
- /* Giving an argument of n means we want the nth command in the history
- file. The command number is interpreted the same way that the bash
- `history' command does it -- that is, giving an argument count of 450
- to this command would get the command listed as number 450 in the
- output of `history'. */
- if (rl_explicit_arg)
- {
- wanted = history_base + where_history () - count;
- if (wanted <= 0)
- rl_beginning_of_history (0, 0);
- else
- rl_get_previous_history (wanted, c);
- }
- else
- rl_beginning_of_history (count, 0);
- return (0);
-}
-
-/* Search again for the last thing searched for. */
-int
-rl_vi_search_again (count, key)
- int count, key;
-{
- switch (key)
- {
- case 'n':
- rl_noninc_reverse_search_again (count, key);
- break;
-
- case 'N':
- rl_noninc_forward_search_again (count, key);
- break;
- }
- return (0);
-}
-
-/* Do a vi style search. */
-int
-rl_vi_search (count, key)
- int count, key;
-{
- switch (key)
- {
- case '?':
- _rl_free_saved_history_line ();
- rl_noninc_forward_search (count, key);
- break;
-
- case '/':
- _rl_free_saved_history_line ();
- rl_noninc_reverse_search (count, key);
- break;
-
- default:
- rl_ding ();
- break;
- }
- return (0);
-}
-
-/* Completion, from vi's point of view. */
-int
-rl_vi_complete (ignore, key)
- int ignore, key;
-{
- if ((rl_point < rl_end) && (!whitespace (rl_line_buffer[rl_point])))
- {
- if (!whitespace (rl_line_buffer[rl_point + 1]))
- rl_vi_end_word (1, 'E');
- rl_point++;
- }
-
- if (key == '*')
- rl_complete_internal ('*'); /* Expansion and replacement. */
- else if (key == '=')
- rl_complete_internal ('?'); /* List possible completions. */
- else if (key == '\\')
- rl_complete_internal (TAB); /* Standard Readline completion. */
- else
- rl_complete (0, key);
-
- if (key == '*' || key == '\\')
- rl_vi_start_inserting (key, 1, rl_arg_sign);
-
- return (0);
-}
-
-/* Tilde expansion for vi mode. */
-int
-rl_vi_tilde_expand (ignore, key)
- int ignore, key;
-{
- rl_tilde_expand (0, key);
- rl_vi_start_inserting (key, 1, rl_arg_sign);
- return (0);
-}
-
-/* Previous word in vi mode. */
-int
-rl_vi_prev_word (count, key)
- int count, key;
-{
- if (count < 0)
- return (rl_vi_next_word (-count, key));
-
- if (rl_point == 0)
- {
- rl_ding ();
- return (0);
- }
-
- if (_rl_uppercase_p (key))
- rl_vi_bWord (count, key);
- else
- rl_vi_bword (count, key);
-
- return (0);
-}
-
-/* Next word in vi mode. */
-int
-rl_vi_next_word (count, key)
- int count, key;
-{
- if (count < 0)
- return (rl_vi_prev_word (-count, key));
-
- if (rl_point >= (rl_end - 1))
- {
- rl_ding ();
- return (0);
- }
-
- if (_rl_uppercase_p (key))
- rl_vi_fWord (count, key);
- else
- rl_vi_fword (count, key);
- return (0);
-}
-
-/* Move to the end of the ?next? word. */
-int
-rl_vi_end_word (count, key)
- int count, key;
-{
- if (count < 0)
- {
- rl_ding ();
- return 1;
- }
-
- if (_rl_uppercase_p (key))
- rl_vi_eWord (count, key);
- else
- rl_vi_eword (count, key);
- return (0);
-}
-
-/* Move forward a word the way that 'W' does. */
-int
-rl_vi_fWord (count, ignore)
- int count, ignore;
-{
- while (count-- && rl_point < (rl_end - 1))
- {
- /* Skip until whitespace. */
- while (!whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
- rl_point++;
-
- /* Now skip whitespace. */
- while (whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
- rl_point++;
- }
- return (0);
-}
-
-int
-rl_vi_bWord (count, ignore)
- int count, ignore;
-{
- while (count-- && rl_point > 0)
- {
- /* If we are at the start of a word, move back to whitespace so
- we will go back to the start of the previous word. */
- if (!whitespace (rl_line_buffer[rl_point]) &&
- whitespace (rl_line_buffer[rl_point - 1]))
- rl_point--;
-
- while (rl_point > 0 && whitespace (rl_line_buffer[rl_point]))
- rl_point--;
-
- if (rl_point > 0)
- {
- while (--rl_point >= 0 && !whitespace (rl_line_buffer[rl_point]));
- rl_point++;
- }
- }
- return (0);
-}
-
-int
-rl_vi_eWord (count, ignore)
- int count, ignore;
-{
- while (count-- && rl_point < (rl_end - 1))
- {
- if (!whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- /* Move to the next non-whitespace character (to the start of the
- next word). */
- while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- if (rl_point && rl_point < rl_end)
- {
- /* Skip whitespace. */
- while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- /* Skip until whitespace. */
- while (rl_point < rl_end && !whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- /* Move back to the last character of the word. */
- rl_point--;
- }
- }
- return (0);
-}
-
-int
-rl_vi_fword (count, ignore)
- int count, ignore;
-{
- while (count-- && rl_point < (rl_end - 1))
- {
- /* Move to white space (really non-identifer). */
- if (_rl_isident (rl_line_buffer[rl_point]))
- {
- while (_rl_isident (rl_line_buffer[rl_point]) && rl_point < rl_end)
- rl_point++;
- }
- else /* if (!whitespace (rl_line_buffer[rl_point])) */
- {
- while (!_rl_isident (rl_line_buffer[rl_point]) &&
- !whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
- rl_point++;
- }
-
- /* Move past whitespace. */
- while (whitespace (rl_line_buffer[rl_point]) && rl_point < rl_end)
- rl_point++;
- }
- return (0);
-}
-
-int
-rl_vi_bword (count, ignore)
- int count, ignore;
-{
- while (count-- && rl_point > 0)
- {
- int last_is_ident;
-
- /* If we are at the start of a word, move back to whitespace
- so we will go back to the start of the previous word. */
- if (!whitespace (rl_line_buffer[rl_point]) &&
- whitespace (rl_line_buffer[rl_point - 1]))
- rl_point--;
-
- /* If this character and the previous character are `opposite', move
- back so we don't get messed up by the rl_point++ down there in
- the while loop. Without this code, words like `l;' screw up the
- function. */
- last_is_ident = _rl_isident (rl_line_buffer[rl_point - 1]);
- if ((_rl_isident (rl_line_buffer[rl_point]) && !last_is_ident) ||
- (!_rl_isident (rl_line_buffer[rl_point]) && last_is_ident))
- rl_point--;
-
- while (rl_point > 0 && whitespace (rl_line_buffer[rl_point]))
- rl_point--;
-
- if (rl_point > 0)
- {
- if (_rl_isident (rl_line_buffer[rl_point]))
- while (--rl_point >= 0 && _rl_isident (rl_line_buffer[rl_point]));
- else
- while (--rl_point >= 0 && !_rl_isident (rl_line_buffer[rl_point]) &&
- !whitespace (rl_line_buffer[rl_point]));
- rl_point++;
- }
- }
- return (0);
-}
-
-int
-rl_vi_eword (count, ignore)
- int count, ignore;
-{
- while (count-- && rl_point < rl_end - 1)
- {
- if (!whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
- rl_point++;
-
- if (rl_point < rl_end)
- {
- if (_rl_isident (rl_line_buffer[rl_point]))
- while (++rl_point < rl_end && _rl_isident (rl_line_buffer[rl_point]));
- else
- while (++rl_point < rl_end && !_rl_isident (rl_line_buffer[rl_point])
- && !whitespace (rl_line_buffer[rl_point]));
- }
- rl_point--;
- }
- return (0);
-}
-
-int
-rl_vi_insert_beg (count, key)
- int count, key;
-{
- rl_beg_of_line (1, key);
- rl_vi_insert_mode (1, key);
- return (0);
-}
-
-static void
-_rl_vi_append_forward (key)
- int key;
-{
- int point;
-
- if (rl_point < rl_end)
- {
- if (MB_CUR_MAX == 1 || rl_byte_oriented)
- rl_point++;
- else
- {
- point = rl_point;
-#if 0
- rl_forward_char (1, key);
-#else
- rl_point = _rl_forward_char_internal (1);
-#endif
- if (point == rl_point)
- rl_point = rl_end;
- }
- }
-}
-
-int
-rl_vi_append_mode (count, key)
- int count, key;
-{
- _rl_vi_append_forward (key);
- rl_vi_start_inserting (key, 1, rl_arg_sign);
- return (0);
-}
-
-int
-rl_vi_append_eol (count, key)
- int count, key;
-{
- rl_end_of_line (1, key);
- rl_vi_append_mode (1, key);
- return (0);
-}
-
-/* What to do in the case of C-d. */
-int
-rl_vi_eof_maybe (count, c)
- int count, c;
-{
- return (rl_newline (1, '\n'));
-}
-
-/* Insertion mode stuff. */
-
-/* Switching from one mode to the other really just involves
- switching keymaps. */
-int
-rl_vi_insertion_mode (count, key)
- int count, key;
-{
- _rl_keymap = vi_insertion_keymap;
- _rl_vi_last_key_before_insert = key;
- if (_rl_show_mode_in_prompt)
- _rl_reset_prompt ();
- return (0);
-}
-
-int
-rl_vi_insert_mode (count, key)
- int count, key;
-{
- rl_vi_start_inserting (key, 1, rl_arg_sign);
- return (0);
-}
-
-static void
-vi_save_insert_buffer (start, len)
- int start, len;
-{
- /* Same code as _rl_vi_save_insert below */
- if (len >= vi_insert_buffer_size)
- {
- vi_insert_buffer_size += (len + 32) - (len % 32);
- vi_insert_buffer = (char *)xrealloc (vi_insert_buffer, vi_insert_buffer_size);
- }
- strncpy (vi_insert_buffer, rl_line_buffer + start, len - 1);
- vi_insert_buffer[len-1] = '\0';
-}
-
-static void
-_rl_vi_save_replace ()
-{
- int len, start, end;
- UNDO_LIST *up;
-
- up = rl_undo_list;
- if (up == 0 || up->what != UNDO_END || vi_replace_count <= 0)
- {
- if (vi_insert_buffer_size >= 1)
- vi_insert_buffer[0] = '\0';
- return;
- }
- /* Let's try it the quick and easy way for now. This should essentially
- accommodate every UNDO_INSERT and save the inserted text to
- vi_insert_buffer */
- end = rl_point;
- start = end - vi_replace_count + 1;
- len = vi_replace_count + 1;
-
- vi_save_insert_buffer (start, len);
-}
-
-static void
-_rl_vi_save_insert (up)
- UNDO_LIST *up;
-{
- int len, start, end;
-
- if (up == 0 || up->what != UNDO_INSERT)
- {
- if (vi_insert_buffer_size >= 1)
- vi_insert_buffer[0] = '\0';
- return;
- }
-
- start = up->start;
- end = up->end;
- len = end - start + 1;
-
- vi_save_insert_buffer (start, len);
-}
-
-void
-_rl_vi_done_inserting ()
-{
- if (_rl_vi_doing_insert)
- {
- /* The `C', `s', and `S' commands set this. */
- rl_end_undo_group ();
- /* Now, the text between rl_undo_list->next->start and
- rl_undo_list->next->end is what was inserted while in insert
- mode. It gets copied to VI_INSERT_BUFFER because it depends
- on absolute indices into the line which may change (though they
- probably will not). */
- _rl_vi_doing_insert = 0;
- if (_rl_vi_last_key_before_insert == 'R')
- _rl_vi_save_replace (); /* Half the battle */
- else
- _rl_vi_save_insert (rl_undo_list->next);
- vi_continued_command = 1;
- }
- else
- {
- if (rl_undo_list && (_rl_vi_last_key_before_insert == 'i' ||
- _rl_vi_last_key_before_insert == 'a' ||
- _rl_vi_last_key_before_insert == 'I' ||
- _rl_vi_last_key_before_insert == 'A'))
- _rl_vi_save_insert (rl_undo_list);
- /* XXX - Other keys probably need to be checked. */
- else if (_rl_vi_last_key_before_insert == 'C')
- rl_end_undo_group ();
- while (_rl_undo_group_level > 0)
- rl_end_undo_group ();
- vi_continued_command = 0;
- }
-}
-
-int
-rl_vi_movement_mode (count, key)
- int count, key;
-{
- if (rl_point > 0)
- rl_backward_char (1, key);
-
- _rl_keymap = vi_movement_keymap;
- _rl_vi_done_inserting ();
-
- /* This is how POSIX.2 says `U' should behave -- everything up until the
- first time you go into command mode should not be undone. */
- if (RL_ISSTATE (RL_STATE_VICMDONCE) == 0)
- rl_free_undo_list ();
-
- if (_rl_show_mode_in_prompt)
- _rl_reset_prompt ();
-
- RL_SETSTATE (RL_STATE_VICMDONCE);
- return (0);
-}
-
-int
-rl_vi_arg_digit (count, c)
- int count, c;
-{
- if (c == '0' && rl_numeric_arg == 1 && !rl_explicit_arg)
- return (rl_beg_of_line (1, c));
- else
- return (rl_digit_argument (count, c));
-}
-
-/* Change the case of the next COUNT characters. */
-#if defined (HANDLE_MULTIBYTE)
-static int
-_rl_vi_change_mbchar_case (count)
- int count;
-{
- wchar_t wc;
- char mb[MB_LEN_MAX+1];
- int mlen, p;
- size_t m;
- mbstate_t ps;
-
- memset (&ps, 0, sizeof (mbstate_t));
- if (_rl_adjust_point (rl_line_buffer, rl_point, &ps) > 0)
- count--;
- while (count-- && rl_point < rl_end)
- {
- m = mbrtowc (&wc, rl_line_buffer + rl_point, rl_end - rl_point, &ps);
- if (MB_INVALIDCH (m))
- wc = (wchar_t)rl_line_buffer[rl_point];
- else if (MB_NULLWCH (m))
- wc = L'\0';
- if (iswupper (wc))
- wc = towlower (wc);
- else if (iswlower (wc))
- wc = towupper (wc);
- else
- {
- /* Just skip over chars neither upper nor lower case */
- rl_forward_char (1, 0);
- continue;
- }
-
- /* Vi is kind of strange here. */
- if (wc)
- {
- p = rl_point;
- mlen = wcrtomb (mb, wc, &ps);
- if (mlen >= 0)
- mb[mlen] = '\0';
- rl_begin_undo_group ();
- rl_vi_delete (1, 0);
- if (rl_point < p) /* Did we retreat at EOL? */
- rl_point++; /* XXX - should we advance more than 1 for mbchar? */
- rl_insert_text (mb);
- rl_end_undo_group ();
- rl_vi_check ();
- }
- else
- rl_forward_char (1, 0);
- }
-
- return 0;
-}
-#endif
-
-int
-rl_vi_change_case (count, ignore)
- int count, ignore;
-{
- int c, p;
-
- /* Don't try this on an empty line. */
- if (rl_point >= rl_end)
- return (0);
-
- c = 0;
-#if defined (HANDLE_MULTIBYTE)
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- return (_rl_vi_change_mbchar_case (count));
-#endif
-
- while (count-- && rl_point < rl_end)
- {
- if (_rl_uppercase_p (rl_line_buffer[rl_point]))
- c = _rl_to_lower (rl_line_buffer[rl_point]);
- else if (_rl_lowercase_p (rl_line_buffer[rl_point]))
- c = _rl_to_upper (rl_line_buffer[rl_point]);
- else
- {
- /* Just skip over characters neither upper nor lower case. */
- rl_forward_char (1, c);
- continue;
- }
-
- /* Vi is kind of strange here. */
- if (c)
- {
- p = rl_point;
- rl_begin_undo_group ();
- rl_vi_delete (1, c);
- if (rl_point < p) /* Did we retreat at EOL? */
- rl_point++;
- _rl_insert_char (1, c);
- rl_end_undo_group ();
- rl_vi_check ();
- }
- else
- rl_forward_char (1, c);
- }
- return (0);
-}
-
-int
-rl_vi_put (count, key)
- int count, key;
-{
- if (!_rl_uppercase_p (key) && (rl_point + 1 <= rl_end))
- rl_point = _rl_find_next_mbchar (rl_line_buffer, rl_point, 1, MB_FIND_NONZERO);
-
- while (count--)
- rl_yank (1, key);
-
- rl_backward_char (1, key);
- return (0);
-}
-
-static void
-_rl_vi_backup ()
-{
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO);
- else
- rl_point--;
-}
-
-int
-rl_vi_check ()
-{
- if (rl_point && rl_point == rl_end)
- {
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO);
- else
- rl_point--;
- }
- return (0);
-}
-
-int
-rl_vi_column (count, key)
- int count, key;
-{
- if (count > rl_end)
- rl_end_of_line (1, key);
- else
- rl_point = count - 1;
- return (0);
-}
-
-/* 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. */
-static int
-_rl_vi_arg_dispatch (c)
- int c;
-{
- int key;
-
- key = c;
- if (c >= 0 && _rl_keymap[c].type == ISFUNC && _rl_keymap[c].function == rl_universal_argument)
- {
- rl_numeric_arg *= 4;
- return 1;
- }
-
- c = UNMETA (c);
-
- if (_rl_digit_p (c))
- {
- if (rl_explicit_arg)
- rl_numeric_arg = (rl_numeric_arg * 10) + _rl_digit_value (c);
- else
- rl_numeric_arg = _rl_digit_value (c);
- rl_explicit_arg = 1;
- return 1; /* keep going */
- }
- else
- {
- rl_clear_message ();
- rl_stuff_char (key);
- return 0; /* done */
- }
-}
-
-/* A simplified loop for vi. Don't dispatch key at end.
- Don't recognize minus sign?
- Should this do rl_save_prompt/rl_restore_prompt? */
-static int
-rl_digit_loop1 ()
-{
- int c, r;
-
- while (1)
- {
- if (_rl_arg_overflow ())
- return 1;
-
- c = _rl_arg_getchar ();
-
- r = _rl_vi_arg_dispatch (c);
- if (r <= 0)
- break;
- }
-
- RL_UNSETSTATE(RL_STATE_NUMERICARG);
- return (0);
-}
-
-static void
-_rl_mvcxt_init (m, op, key)
- _rl_vimotion_cxt *m;
- int op, key;
-{
- m->op = op;
- m->state = m->flags = 0;
- m->ncxt = 0;
- m->numeric_arg = -1;
- m->start = rl_point;
- m->end = rl_end;
- m->key = key;
- m->motion = -1;
-}
-
-static _rl_vimotion_cxt *
-_rl_mvcxt_alloc (op, key)
- int op, key;
-{
- _rl_vimotion_cxt *m;
-
- m = xmalloc (sizeof (_rl_vimotion_cxt));
- _rl_mvcxt_init (m, op, key);
- return m;
-}
-
-static void
-_rl_mvcxt_dispose (m)
- _rl_vimotion_cxt *m;
-{
- xfree (m);
-}
-
-static int
-rl_domove_motion_callback (m)
- _rl_vimotion_cxt *m;
-{
- int c, save, r;
- int old_end;
-
- _rl_vi_last_motion = c = m->motion;
-
- /* Append a blank character temporarily so that the motion routines
- work right at the end of the line. */
- old_end = rl_end;
- rl_line_buffer[rl_end++] = ' ';
- rl_line_buffer[rl_end] = '\0';
-
- _rl_dispatch (c, _rl_keymap);
-
- /* Remove the blank that we added. */
- rl_end = old_end;
- rl_line_buffer[rl_end] = '\0';
- if (rl_point > rl_end)
- rl_point = rl_end;
-
- /* No change in position means the command failed. */
- if (rl_mark == rl_point)
- return (-1);
-
- /* rl_vi_f[wW]ord () leaves the cursor on the first character of the next
- word. If we are not at the end of the line, and we are on a
- non-whitespace character, move back one (presumably to whitespace). */
- if ((_rl_to_upper (c) == 'W') && rl_point < rl_end && rl_point > rl_mark &&
- !whitespace (rl_line_buffer[rl_point]))
- rl_point--;
-
- /* If cw or cW, back up to the end of a word, so the behaviour of ce
- or cE is the actual result. Brute-force, no subtlety. */
- if (m->key == 'c' && rl_point >= rl_mark && (_rl_to_upper (c) == 'W'))
- {
- /* Don't move farther back than where we started. */
- while (rl_point > rl_mark && whitespace (rl_line_buffer[rl_point]))
- rl_point--;
-
- /* Posix.2 says that if cw or cW moves the cursor towards the end of
- the line, the character under the cursor should be deleted. */
- if (rl_point == rl_mark)
- rl_point++;
- else
- {
- /* Move past the end of the word so that the kill doesn't
- remove the last letter of the previous word. Only do this
- if we are not at the end of the line. */
- if (rl_point >= 0 && rl_point < (rl_end - 1) && !whitespace (rl_line_buffer[rl_point]))
- rl_point++;
- }
- }
-
- if (rl_mark < rl_point)
- SWAP (rl_point, rl_mark);
-
-#if defined (READLINE_CALLBACKS)
- if (RL_ISSTATE (RL_STATE_CALLBACK))
- (*rl_redisplay_function)(); /* make sure motion is displayed */
-#endif
-
- r = vidomove_dispatch (m);
-
- return (r);
-}
-
-#define RL_VIMOVENUMARG() (RL_ISSTATE (RL_STATE_VIMOTION) && RL_ISSTATE (RL_STATE_NUMERICARG))
-
-static int
-rl_domove_read_callback (m)
- _rl_vimotion_cxt *m;
-{
- int c, save;
-
- c = m->motion;
-
- if (member (c, vi_motion))
- {
-#if defined (READLINE_CALLBACKS)
- /* If we just read a vi-mode motion command numeric argument, turn off
- the `reading numeric arg' state */
- if (RL_ISSTATE (RL_STATE_CALLBACK) && RL_VIMOVENUMARG())
- RL_UNSETSTATE (RL_STATE_NUMERICARG);
-#endif
- /* Should do everything, including turning off RL_STATE_VIMOTION */
- return (rl_domove_motion_callback (m));
- }
- else if (m->key == c && (m->key == 'd' || m->key == 'y' || m->key == 'c'))
- {
- rl_mark = rl_end;
- rl_beg_of_line (1, c);
- _rl_vi_last_motion = c;
- RL_UNSETSTATE (RL_STATE_VIMOTION);
- return (vidomove_dispatch (m));
- }
-#if defined (READLINE_CALLBACKS)
- /* XXX - these need to handle rl_universal_argument bindings */
- /* Reading vi motion char continuing numeric argument */
- else if (_rl_digit_p (c) && RL_ISSTATE (RL_STATE_CALLBACK) && RL_VIMOVENUMARG())
- {
- return (_rl_vi_arg_dispatch (c));
- }
- /* Readine vi motion char starting numeric argument */
- else if (_rl_digit_p (c) && RL_ISSTATE (RL_STATE_CALLBACK) && RL_ISSTATE (RL_STATE_VIMOTION) && (RL_ISSTATE (RL_STATE_NUMERICARG) == 0))
- {
- RL_SETSTATE (RL_STATE_NUMERICARG);
- return (_rl_vi_arg_dispatch (c));
- }
-#endif
- else if (_rl_digit_p (c))
- {
- /* This code path taken when not in callback mode */
- save = rl_numeric_arg;
- rl_numeric_arg = _rl_digit_value (c);
- rl_explicit_arg = 1;
- RL_SETSTATE (RL_STATE_NUMERICARG);
- rl_digit_loop1 ();
- rl_numeric_arg *= save;
- c = rl_vi_domove_getchar (m);
- if (c < 0)
- {
- m->motion = 0;
- return -1;
- }
- m->motion = c;
- return (rl_domove_motion_callback (m));
- }
- else
- {
- RL_UNSETSTATE (RL_STATE_VIMOTION);
- RL_UNSETSTATE (RL_STATE_NUMERICARG);
- return (1);
- }
-}
-
-static int
-rl_vi_domove_getchar (m)
- _rl_vimotion_cxt *m;
-{
- int c;
-
- RL_SETSTATE(RL_STATE_MOREINPUT);
- c = rl_read_key ();
- RL_UNSETSTATE(RL_STATE_MOREINPUT);
-
- return c;
-}
-
-#if defined (READLINE_CALLBACKS)
-int
-_rl_vi_domove_callback (m)
- _rl_vimotion_cxt *m;
-{
- int c, r;
-
- m->motion = c = rl_vi_domove_getchar (m);
- /* XXX - what to do if this returns -1? Should we return 1 for eof to
- callback code? */
- r = rl_domove_read_callback (m);
-
- return ((r == 0) ? r : 1); /* normalize return values */
-}
-#endif
-
-/* This code path taken when not in callback mode. */
-int
-rl_vi_domove (x, ignore)
- int x, *ignore;
-{
- int r;
- _rl_vimotion_cxt *m;
-
- m = _rl_vimvcxt;
- *ignore = m->motion = rl_vi_domove_getchar (m);
-
- if (m->motion < 0)
- {
- m->motion = 0;
- return -1;
- }
-
- return (rl_domove_read_callback (m));
-}
-
-static int
-vi_delete_dispatch (m)
- _rl_vimotion_cxt *m;
-{
- /* These are the motion commands that do not require adjusting the
- mark. */
- if (((strchr (" l|h^0bBFT`", m->motion) == 0) && (rl_point >= m->start)) &&
- (rl_mark < rl_end))
- rl_mark++;
-
- rl_kill_text (rl_point, rl_mark);
- return (0);
-}
-
-int
-rl_vi_delete_to (count, key)
- int count, key;
-{
- int c, r;
-
- _rl_vimvcxt = _rl_mvcxt_alloc (VIM_DELETE, key);
- _rl_vimvcxt->start = rl_point;
-
- rl_mark = rl_point;
- if (_rl_uppercase_p (key))
- {
- _rl_vimvcxt->motion = '$';
- r = rl_domove_motion_callback (_rl_vimvcxt);
- }
- else if (vi_redoing && _rl_vi_last_motion != 'd') /* `dd' is special */
- {
- _rl_vimvcxt->motion = _rl_vi_last_motion;
- r = rl_domove_motion_callback (_rl_vimvcxt);
- }
- else if (vi_redoing) /* handle redoing `dd' here */
- {
- _rl_vimvcxt->motion = _rl_vi_last_motion;
- rl_mark = rl_end;
- rl_beg_of_line (1, key);
- RL_UNSETSTATE (RL_STATE_VIMOTION);
- r = vidomove_dispatch (_rl_vimvcxt);
- }
-#if defined (READLINE_CALLBACKS)
- else if (RL_ISSTATE (RL_STATE_CALLBACK))
- {
- RL_SETSTATE (RL_STATE_VIMOTION);
- return (0);
- }
-#endif
- else
- r = rl_vi_domove (key, &c);
-
- if (r < 0)
- {
- rl_ding ();
- r = -1;
- }
-
- _rl_mvcxt_dispose (_rl_vimvcxt);
- _rl_vimvcxt = 0;
-
- return r;
-}
-
-static int
-vi_change_dispatch (m)
- _rl_vimotion_cxt *m;
-{
- /* These are the motion commands that do not require adjusting the
- mark. c[wW] are handled by special-case code in rl_vi_domove(),
- and already leave the mark at the correct location. */
- if (((strchr (" l|hwW^0bBFT`", m->motion) == 0) && (rl_point >= m->start)) &&
- (rl_mark < rl_end))
- rl_mark++;
-
- /* The cursor never moves with c[wW]. */
- if ((_rl_to_upper (m->motion) == 'W') && rl_point < m->start)
- rl_point = m->start;
-
- if (vi_redoing)
- {
- if (vi_insert_buffer && *vi_insert_buffer)
- rl_begin_undo_group ();
- rl_delete_text (rl_point, rl_mark);
- if (vi_insert_buffer && *vi_insert_buffer)
- {
- rl_insert_text (vi_insert_buffer);
- rl_end_undo_group ();
- }
- }
- else
- {
- rl_begin_undo_group (); /* to make the `u' command work */
- rl_kill_text (rl_point, rl_mark);
- /* `C' does not save the text inserted for undoing or redoing. */
- if (_rl_uppercase_p (m->key) == 0)
- _rl_vi_doing_insert = 1;
- /* XXX -- TODO -- use m->numericarg? */
- rl_vi_start_inserting (m->key, rl_numeric_arg, rl_arg_sign);
- }
-
- return (0);
-}
-
-int
-rl_vi_change_to (count, key)
- int count, key;
-{
- int c, r;
-
- _rl_vimvcxt = _rl_mvcxt_alloc (VIM_CHANGE, key);
- _rl_vimvcxt->start = rl_point;
-
- rl_mark = rl_point;
- if (_rl_uppercase_p (key))
- {
- _rl_vimvcxt->motion = '$';
- r = rl_domove_motion_callback (_rl_vimvcxt);
- }
- else if (vi_redoing && _rl_vi_last_motion != 'c') /* `cc' is special */
- {
- _rl_vimvcxt->motion = _rl_vi_last_motion;
- r = rl_domove_motion_callback (_rl_vimvcxt);
- }
- else if (vi_redoing) /* handle redoing `cc' here */
- {
- _rl_vimvcxt->motion = _rl_vi_last_motion;
- rl_mark = rl_end;
- rl_beg_of_line (1, key);
- RL_UNSETSTATE (RL_STATE_VIMOTION);
- r = vidomove_dispatch (_rl_vimvcxt);
- }
-#if defined (READLINE_CALLBACKS)
- else if (RL_ISSTATE (RL_STATE_CALLBACK))
- {
- RL_SETSTATE (RL_STATE_VIMOTION);
- return (0);
- }
-#endif
- else
- r = rl_vi_domove (key, &c);
-
- if (r < 0)
- {
- rl_ding ();
- r = -1; /* normalize return value */
- }
-
- _rl_mvcxt_dispose (_rl_vimvcxt);
- _rl_vimvcxt = 0;
-
- return r;
-}
-
-static int
-vi_yank_dispatch (m)
- _rl_vimotion_cxt *m;
-{
- /* These are the motion commands that do not require adjusting the
- mark. */
- if (((strchr (" l|h^0%bBFT`", m->motion) == 0) && (rl_point >= m->start)) &&
- (rl_mark < rl_end))
- rl_mark++;
-
- rl_begin_undo_group ();
- rl_kill_text (rl_point, rl_mark);
- rl_end_undo_group ();
- rl_do_undo ();
- rl_point = m->start;
-
- return (0);
-}
-
-int
-rl_vi_yank_to (count, key)
- int count, key;
-{
- int c, r;
-
- _rl_vimvcxt = _rl_mvcxt_alloc (VIM_YANK, key);
- _rl_vimvcxt->start = rl_point;
-
- rl_mark = rl_point;
- if (_rl_uppercase_p (key))
- {
- _rl_vimvcxt->motion = '$';
- r = rl_domove_motion_callback (_rl_vimvcxt);
- }
- else if (vi_redoing && _rl_vi_last_motion != 'y') /* `yy' is special */
- {
- _rl_vimvcxt->motion = _rl_vi_last_motion;
- r = rl_domove_motion_callback (_rl_vimvcxt);
- }
- else if (vi_redoing) /* handle redoing `yy' here */
- {
- _rl_vimvcxt->motion = _rl_vi_last_motion;
- rl_mark = rl_end;
- rl_beg_of_line (1, key);
- RL_UNSETSTATE (RL_STATE_VIMOTION);
- r = vidomove_dispatch (_rl_vimvcxt);
- }
-#if defined (READLINE_CALLBACKS)
- else if (RL_ISSTATE (RL_STATE_CALLBACK))
- {
- RL_SETSTATE (RL_STATE_VIMOTION);
- return (0);
- }
-#endif
- else
- r = rl_vi_domove (key, &c);
-
- if (r < 0)
- {
- rl_ding ();
- r = -1;
- }
-
- _rl_mvcxt_dispose (_rl_vimvcxt);
- _rl_vimvcxt = 0;
-
- return r;
-}
-
-static int
-vidomove_dispatch (m)
- _rl_vimotion_cxt *m;
-{
- int r;
-
- switch (m->op)
- {
- case VIM_DELETE:
- r = vi_delete_dispatch (m);
- break;
- case VIM_CHANGE:
- r = vi_change_dispatch (m);
- break;
- case VIM_YANK:
- r = vi_yank_dispatch (m);
- break;
- default:
- _rl_errmsg ("vidomove_dispatch: unknown operator %d", m->op);
- r = 1;
- break;
- }
-
- RL_UNSETSTATE (RL_STATE_VIMOTION);
- return r;
-}
-
-int
-rl_vi_rubout (count, key)
- int count, key;
-{
- int opoint;
-
- if (count < 0)
- return (rl_vi_delete (-count, key));
-
- if (rl_point == 0)
- {
- rl_ding ();
- return 1;
- }
-
- opoint = rl_point;
- if (count > 1 && MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- rl_backward_char (count, key);
- else if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- rl_point = _rl_find_prev_mbchar (rl_line_buffer, rl_point, MB_FIND_NONZERO);
- else
- rl_point -= count;
-
- if (rl_point < 0)
- rl_point = 0;
-
- rl_kill_text (rl_point, opoint);
-
- return (0);
-}
-
-int
-rl_vi_delete (count, key)
- int count, key;
-{
- int end;
-
- if (count < 0)
- return (rl_vi_rubout (-count, key));
-
- if (rl_end == 0)
- {
- rl_ding ();
- return 1;
- }
-
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- end = _rl_find_next_mbchar (rl_line_buffer, rl_point, count, MB_FIND_NONZERO);
- else
- end = rl_point + count;
-
- if (end >= rl_end)
- end = rl_end;
-
- rl_kill_text (rl_point, end);
-
- if (rl_point > 0 && rl_point == rl_end)
- rl_backward_char (1, key);
-
- return (0);
-}
-
-int
-rl_vi_back_to_indent (count, key)
- int count, key;
-{
- rl_beg_of_line (1, key);
- while (rl_point < rl_end && whitespace (rl_line_buffer[rl_point]))
- rl_point++;
- return (0);
-}
-
-int
-rl_vi_first_print (count, key)
- int count, key;
-{
- return (rl_vi_back_to_indent (1, key));
-}
-
-static int _rl_cs_dir, _rl_cs_orig_dir;
-
-#if defined (READLINE_CALLBACKS)
-static int
-_rl_vi_callback_char_search (data)
- _rl_callback_generic_arg *data;
-{
- int c;
-#if defined (HANDLE_MULTIBYTE)
- c = _rl_vi_last_search_mblen = _rl_read_mbchar (_rl_vi_last_search_mbchar, MB_LEN_MAX);
-#else
- RL_SETSTATE(RL_STATE_MOREINPUT);
- c = rl_read_key ();
- RL_UNSETSTATE(RL_STATE_MOREINPUT);
-#endif
-
- if (c <= 0)
- return -1;
-
-#if !defined (HANDLE_MULTIBYTE)
- _rl_vi_last_search_char = c;
-#endif
-
- _rl_callback_func = 0;
- _rl_want_redisplay = 1;
-
-#if defined (HANDLE_MULTIBYTE)
- return (_rl_char_search_internal (data->count, _rl_cs_dir, _rl_vi_last_search_mbchar, _rl_vi_last_search_mblen));
-#else
- return (_rl_char_search_internal (data->count, _rl_cs_dir, _rl_vi_last_search_char));
-#endif
-}
-#endif
-
-int
-rl_vi_char_search (count, key)
- int count, key;
-{
- int c;
-#if defined (HANDLE_MULTIBYTE)
- static char *target;
- static int tlen;
-#else
- static char target;
-#endif
-
- if (key == ';' || key == ',')
- {
- if (_rl_cs_orig_dir == 0)
- return 1;
-#if defined (HANDLE_MULTIBYTE)
- if (_rl_vi_last_search_mblen == 0)
- return 1;
-#else
- if (_rl_vi_last_search_char == 0)
- return 1;
-#endif
- _rl_cs_dir = (key == ';') ? _rl_cs_orig_dir : -_rl_cs_orig_dir;
- }
- else
- {
- switch (key)
- {
- case 't':
- _rl_cs_orig_dir = _rl_cs_dir = FTO;
- break;
-
- case 'T':
- _rl_cs_orig_dir = _rl_cs_dir = BTO;
- break;
-
- case 'f':
- _rl_cs_orig_dir = _rl_cs_dir = FFIND;
- break;
-
- case 'F':
- _rl_cs_orig_dir = _rl_cs_dir = BFIND;
- break;
- }
-
- if (vi_redoing)
- {
- /* set target and tlen below */
- }
-#if defined (READLINE_CALLBACKS)
- else if (RL_ISSTATE (RL_STATE_CALLBACK))
- {
- _rl_callback_data = _rl_callback_data_alloc (count);
- _rl_callback_data->i1 = _rl_cs_dir;
- _rl_callback_func = _rl_vi_callback_char_search;
- return (0);
- }
-#endif
- else
- {
-#if defined (HANDLE_MULTIBYTE)
- c = _rl_read_mbchar (_rl_vi_last_search_mbchar, MB_LEN_MAX);
- if (c <= 0)
- return -1;
- _rl_vi_last_search_mblen = c;
-#else
- RL_SETSTATE(RL_STATE_MOREINPUT);
- c = rl_read_key ();
- RL_UNSETSTATE(RL_STATE_MOREINPUT);
- if (c < 0)
- return -1;
- _rl_vi_last_search_char = c;
-#endif
- }
- }
-
-#if defined (HANDLE_MULTIBYTE)
- target = _rl_vi_last_search_mbchar;
- tlen = _rl_vi_last_search_mblen;
-#else
- target = _rl_vi_last_search_char;
-#endif
-
-#if defined (HANDLE_MULTIBYTE)
- return (_rl_char_search_internal (count, _rl_cs_dir, target, tlen));
-#else
- return (_rl_char_search_internal (count, _rl_cs_dir, target));
-#endif
-}
-
-/* Match brackets */
-int
-rl_vi_match (ignore, key)
- int ignore, key;
-{
- int count = 1, brack, pos, tmp, pre;
-
- pos = rl_point;
- if ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0)
- {
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- {
- while ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0)
- {
- pre = rl_point;
- rl_forward_char (1, key);
- if (pre == rl_point)
- break;
- }
- }
- else
- while ((brack = rl_vi_bracktype (rl_line_buffer[rl_point])) == 0 &&
- rl_point < rl_end - 1)
- rl_forward_char (1, key);
-
- if (brack <= 0)
- {
- rl_point = pos;
- rl_ding ();
- return 1;
- }
- }
-
- pos = rl_point;
-
- if (brack < 0)
- {
- while (count)
- {
- tmp = pos;
- if (MB_CUR_MAX == 1 || rl_byte_oriented)
- pos--;
- else
- {
- pos = _rl_find_prev_mbchar (rl_line_buffer, pos, MB_FIND_ANY);
- if (tmp == pos)
- pos--;
- }
- if (pos >= 0)
- {
- int b = rl_vi_bracktype (rl_line_buffer[pos]);
- if (b == -brack)
- count--;
- else if (b == brack)
- count++;
- }
- else
- {
- rl_ding ();
- return 1;
- }
- }
- }
- else
- { /* brack > 0 */
- while (count)
- {
- if (MB_CUR_MAX == 1 || rl_byte_oriented)
- pos++;
- else
- pos = _rl_find_next_mbchar (rl_line_buffer, pos, 1, MB_FIND_ANY);
-
- if (pos < rl_end)
- {
- int b = rl_vi_bracktype (rl_line_buffer[pos]);
- if (b == -brack)
- count--;
- else if (b == brack)
- count++;
- }
- else
- {
- rl_ding ();
- return 1;
- }
- }
- }
- rl_point = pos;
- return (0);
-}
-
-int
-rl_vi_bracktype (c)
- int c;
-{
- switch (c)
- {
- case '(': return 1;
- case ')': return -1;
- case '[': return 2;
- case ']': return -2;
- case '{': return 3;
- case '}': return -3;
- default: return 0;
- }
-}
-
-static int
-_rl_vi_change_char (count, c, mb)
- int count, c;
- char *mb;
-{
- int p;
-
- if (c == '\033' || c == CTRL ('C'))
- return -1;
-
- rl_begin_undo_group ();
- while (count-- && rl_point < rl_end)
- {
- p = rl_point;
- rl_vi_delete (1, c);
- if (rl_point < p) /* Did we retreat at EOL? */
- rl_point++;
-#if defined (HANDLE_MULTIBYTE)
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- rl_insert_text (mb);
- else
-#endif
- _rl_insert_char (1, c);
- }
-
- /* The cursor shall be left on the last character changed. */
- rl_backward_char (1, c);
-
- rl_end_undo_group ();
-
- return (0);
-}
-
-static int
-_rl_vi_callback_getchar (mb, mlen)
- char *mb;
- int mlen;
-{
- int c;
-
- RL_SETSTATE(RL_STATE_MOREINPUT);
- c = rl_read_key ();
- RL_UNSETSTATE(RL_STATE_MOREINPUT);
-
- if (c < 0)
- return -1;
-
-#if defined (HANDLE_MULTIBYTE)
- if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
- c = _rl_read_mbstring (c, mb, mlen);
-#endif
-
- return c;
-}
-
-#if defined (READLINE_CALLBACKS)
-static int
-_rl_vi_callback_change_char (data)
- _rl_callback_generic_arg *data;
-{
- int c;
- char mb[MB_LEN_MAX];
-
- _rl_vi_last_replacement = c = _rl_vi_callback_getchar (mb, MB_LEN_MAX);
-
- if (c < 0)
- return -1;
-
- _rl_callback_func = 0;
- _rl_want_redisplay = 1;
-
- return (_rl_vi_change_char (data->count, c, mb));
-}
-#endif
-
-int
-rl_vi_change_char (count, key)
- int count, key;
-{
- int c;
- char mb[MB_LEN_MAX];
-
- if (vi_redoing)
- {
- c = _rl_vi_last_replacement;
- mb[0] = c;
- mb[1] = '\0';
- }
-#if defined (READLINE_CALLBACKS)
- else if (RL_ISSTATE (RL_STATE_CALLBACK))
- {
- _rl_callback_data = _rl_callback_data_alloc (count);
- _rl_callback_func = _rl_vi_callback_change_char;
- return (0);
- }
-#endif
- else
- _rl_vi_last_replacement = c = _rl_vi_callback_getchar (mb, MB_LEN_MAX);
-
- if (c < 0)
- return -1;
-
- return (_rl_vi_change_char (count, c, mb));
-}
-
-int
-rl_vi_subst (count, key)
- int count, key;
-{
- /* If we are redoing, rl_vi_change_to will stuff the last motion char */
- if (vi_redoing == 0)
- rl_stuff_char ((key == 'S') ? 'c' : 'l'); /* `S' == `cc', `s' == `cl' */
-
- return (rl_vi_change_to (count, 'c'));
-}
-
-int
-rl_vi_overstrike (count, key)
- int count, key;
-{
- if (_rl_vi_doing_insert == 0)
- {
- _rl_vi_doing_insert = 1;
- rl_begin_undo_group ();
- }
-
- if (count > 0)
- {
- _rl_overwrite_char (count, key);
- vi_replace_count += count;
- }
-
- return (0);
-}
-
-int
-rl_vi_overstrike_delete (count, key)
- int count, key;
-{
- int i, s;
-
- for (i = 0; i < count; i++)
- {
- if (vi_replace_count == 0)
- {
- rl_ding ();
- break;
- }
- s = rl_point;
-
- if (rl_do_undo ())
- vi_replace_count--;
-
- if (rl_point == s)
- rl_backward_char (1, key);
- }
-
- if (vi_replace_count == 0 && _rl_vi_doing_insert)
- {
- rl_end_undo_group ();
- rl_do_undo ();
- _rl_vi_doing_insert = 0;
- }
- return (0);
-}
-
-int
-rl_vi_replace (count, key)
- int count, key;
-{
- int i;
-
- vi_replace_count = 0;
-
- if (vi_replace_map == 0)
- {
- vi_replace_map = rl_make_bare_keymap ();
-
- for (i = 0; i < ' '; i++)
- if (vi_insertion_keymap[i].type == ISFUNC)
- vi_replace_map[i].function = vi_insertion_keymap[i].function;
-
- for (i = ' '; i < KEYMAP_SIZE; i++)
- vi_replace_map[i].function = rl_vi_overstrike;
-
- vi_replace_map[RUBOUT].function = rl_vi_overstrike_delete;
-
- /* Make sure these are what we want. */
- vi_replace_map[ESC].function = rl_vi_movement_mode;
- vi_replace_map[RETURN].function = rl_newline;
- vi_replace_map[NEWLINE].function = rl_newline;
-
- /* If the normal vi insertion keymap has ^H bound to erase, do the
- same here. Probably should remove the assignment to RUBOUT up
- there, but I don't think it will make a difference in real life. */
- if (vi_insertion_keymap[CTRL ('H')].type == ISFUNC &&
- vi_insertion_keymap[CTRL ('H')].function == rl_rubout)
- vi_replace_map[CTRL ('H')].function = rl_vi_overstrike_delete;
-
- }
-
- rl_vi_start_inserting (key, 1, rl_arg_sign);
-
- _rl_vi_last_key_before_insert = key;
- _rl_keymap = vi_replace_map;
-
- return (0);
-}
-
-#if 0
-/* Try to complete the word we are standing on or the word that ends with
- the previous character. A space matches everything. Word delimiters are
- space and ;. */
-int
-rl_vi_possible_completions()
-{
- int save_pos = rl_point;
-
- if (rl_line_buffer[rl_point] != ' ' && rl_line_buffer[rl_point] != ';')
- {
- while (rl_point < rl_end && rl_line_buffer[rl_point] != ' ' &&
- rl_line_buffer[rl_point] != ';')
- rl_point++;
- }
- else if (rl_line_buffer[rl_point - 1] == ';')
- {
- rl_ding ();
- return (0);
- }
-
- rl_possible_completions ();
- rl_point = save_pos;
-
- return (0);
-}
-#endif
-
-/* Functions to save and restore marks. */
-static int
-_rl_vi_set_mark ()
-{
- int ch;
-
- RL_SETSTATE(RL_STATE_MOREINPUT);
- ch = rl_read_key ();
- RL_UNSETSTATE(RL_STATE_MOREINPUT);
-
- if (ch < 0 || ch < 'a' || ch > 'z') /* make test against 0 explicit */
- {
- rl_ding ();
- return 1;
- }
- ch -= 'a';
- vi_mark_chars[ch] = rl_point;
- return 0;
-}
-
-#if defined (READLINE_CALLBACKS)
-static int
-_rl_vi_callback_set_mark (data)
- _rl_callback_generic_arg *data;
-{
- _rl_callback_func = 0;
- _rl_want_redisplay = 1;
-
- return (_rl_vi_set_mark ());
-}
-#endif
-
-int
-rl_vi_set_mark (count, key)
- int count, key;
-{
-#if defined (READLINE_CALLBACKS)
- if (RL_ISSTATE (RL_STATE_CALLBACK))
- {
- _rl_callback_data = 0;
- _rl_callback_func = _rl_vi_callback_set_mark;
- return (0);
- }
-#endif
-
- return (_rl_vi_set_mark ());
-}
-
-static int
-_rl_vi_goto_mark ()
-{
- int ch;
-
- RL_SETSTATE(RL_STATE_MOREINPUT);
- ch = rl_read_key ();
- RL_UNSETSTATE(RL_STATE_MOREINPUT);
-
- if (ch == '`')
- {
- rl_point = rl_mark;
- return 0;
- }
- else if (ch < 0 || ch < 'a' || ch > 'z') /* make test against 0 explicit */
- {
- rl_ding ();
- return 1;
- }
-
- ch -= 'a';
- if (vi_mark_chars[ch] == -1)
- {
- rl_ding ();
- return 1;
- }
- rl_point = vi_mark_chars[ch];
- return 0;
-}
-
-#if defined (READLINE_CALLBACKS)
-static int
-_rl_vi_callback_goto_mark (data)
- _rl_callback_generic_arg *data;
-{
- _rl_callback_func = 0;
- _rl_want_redisplay = 1;
-
- return (_rl_vi_goto_mark ());
-}
-#endif
-
-int
-rl_vi_goto_mark (count, key)
- int count, key;
-{
-#if defined (READLINE_CALLBACKS)
- if (RL_ISSTATE (RL_STATE_CALLBACK))
- {
- _rl_callback_data = 0;
- _rl_callback_func = _rl_vi_callback_goto_mark;
- return (0);
- }
-#endif
-
- return (_rl_vi_goto_mark ());
-}
-#endif /* VI_MODE */
+++ /dev/null
-/* casemod.c -- functions to change case of strings */
-
-/* Copyright (C) 2008,2009,2015 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 <http://www.gnu.org/licenses/>.
-*/
-
-#if defined (HAVE_CONFIG_H)
-# include <config.h>
-#endif
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-
-#include <stdc.h>
-
-#include <bashansi.h>
-#include <bashintl.h>
-#include <bashtypes.h>
-
-#include <stdio.h>
-#include <ctype.h>
-#include <xmalloc.h>
-
-#include <shmbchar.h>
-#include <shmbutil.h>
-#include <chartypes.h>
-#include <typemax.h>
-
-#include <glob/strmatch.h>
-
-#define _to_wupper(wc) (iswlower (wc) ? towupper (wc) : (wc))
-#define _to_wlower(wc) (iswupper (wc) ? towlower (wc) : (wc))
-
-#if !defined (HANDLE_MULTIBYTE)
-# define cval(s, i) ((s)[(i)])
-# define iswalnum(c) (isalnum(c))
-# define TOGGLE(x) (ISUPPER (x) ? tolower ((unsigned char)x) : (TOUPPER (x)))
-#else
-# define TOGGLE(x) (iswupper (x) ? towlower (x) : (_to_wupper(x)))
-#endif
-
-/* These must agree with the defines in externs.h */
-#define CASE_NOOP 0x0000
-#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 /* modify behavior to act on words in passed string */
-
-extern char *substring __P((char *, int, int));
-
-#ifndef UCHAR_MAX
-# define UCHAR_MAX TYPE_MAXIMUM(unsigned char)
-#endif
-
-#if defined (HANDLE_MULTIBYTE)
-static wchar_t
-cval (s, i)
- char *s;
- int i;
-{
- size_t tmp;
- wchar_t wc;
- int l;
- mbstate_t mps;
-
- if (MB_CUR_MAX == 1 || is_basic (s[i]))
- return ((wchar_t)s[i]);
- l = strlen (s);
- if (i >= (l - 1))
- return ((wchar_t)s[i]);
- memset (&mps, 0, sizeof (mbstate_t));
- tmp = mbrtowc (&wc, s + i, l - i, &mps);
- if (MB_INVALIDCH (tmp) || MB_NULLWCH (tmp))
- return ((wchar_t)s[i]);
- return wc;
-}
-#endif
-
-/* Modify the case of characters in STRING matching PAT based on the value of
- FLAGS. If PAT is null, modify the case of each character */
-char *
-sh_modcase (string, pat, flags)
- const char *string;
- char *pat;
- int flags;
-{
- int start, next, end, retind;
- int inword, c, nc, nop, match, usewords;
- char *ret, *s;
- wchar_t wc;
-#if defined (HANDLE_MULTIBYTE)
- wchar_t nwc;
- char mb[MB_LEN_MAX+1];
- int mlen;
- size_t m;
- mbstate_t state;
-#endif
-
- if (string == 0 || *string == 0)
- {
- ret = (char *)xmalloc (1);
- ret[0] = '\0';
- return ret;
- }
-
-#if defined (HANDLE_MULTIBYTE)
- memset (&state, 0, sizeof (mbstate_t));
-#endif
-
- start = 0;
- end = strlen (string);
-
- ret = (char *)xmalloc (2*end + 1);
- retind = 0;
-
- /* See if we are supposed to split on alphanumerics and operate on each word */
- usewords = (flags & CASE_USEWORDS);
- flags &= ~CASE_USEWORDS;
-
- inword = 0;
- while (start < end)
- {
- wc = cval (string, start);
-
- if (iswalnum (wc) == 0)
- inword = 0;
-
- if (pat)
- {
- next = start;
- ADVANCE_CHAR (string, end, next);
- s = substring (string, start, next);
- match = strmatch (pat, s, FNM_EXTMATCH) != FNM_NOMATCH;
- free (s);
- if (match == 0)
- {
- /* copy unmatched portion */
- memcpy (ret + retind, string + start, next - start);
- retind += next - start;
- start = next;
- inword = 1;
- continue;
- }
- }
-
- /* XXX - for now, the toggling operators work on the individual
- words in the string, breaking on alphanumerics. Should I
- leave the capitalization operators to do that also? */
- if (flags == CASE_CAPITALIZE)
- {
- if (usewords)
- nop = inword ? CASE_LOWER : CASE_UPPER;
- else
- nop = (start > 0) ? CASE_LOWER : CASE_UPPER;
- inword = 1;
- }
- else if (flags == CASE_UNCAP)
- {
- if (usewords)
- nop = inword ? CASE_UPPER : CASE_LOWER;
- else
- nop = (start > 0) ? CASE_UPPER : CASE_LOWER;
- inword = 1;
- }
- else if (flags == CASE_UPFIRST)
- {
- if (usewords)
- nop = inword ? CASE_NOOP : CASE_UPPER;
- else
- nop = (start > 0) ? CASE_NOOP : CASE_UPPER;
- inword = 1;
- }
- else if (flags == CASE_LOWFIRST)
- {
- if (usewords)
- nop = inword ? CASE_NOOP : CASE_LOWER;
- else
- nop = (start > 0) ? CASE_NOOP : CASE_LOWER;
- inword = 1;
- }
- else if (flags == CASE_TOGGLE)
- {
- nop = inword ? CASE_NOOP : CASE_TOGGLE;
- inword = 1;
- }
- else
- nop = flags;
-
- /* Can't short-circuit, some locales have multibyte upper and lower
- case equivalents of single-byte ascii characters (e.g., Turkish) */
- if (MB_CUR_MAX == 1)
- {
-singlebyte:
- switch (nop)
- {
- default:
- case CASE_NOOP: nc = wc; break;
- case CASE_UPPER: nc = TOUPPER (wc); break;
- case CASE_LOWER: nc = TOLOWER (wc); break;
- case CASE_TOGGLEALL:
- case CASE_TOGGLE: nc = TOGGLE (wc); break;
- }
- ret[retind++] = nc;
- }
-#if defined (HANDLE_MULTIBYTE)
- else
- {
- m = mbrtowc (&wc, string + start, end - start, &state);
-if (m == 1)
- itrace("sh_modcase: mbrtowc returns 1 for single byte char");
- if (MB_INVALIDCH (m) || m == 1)
- {
- wc = (unsigned char)string[start];
- goto singlebyte;
- }
- else if (MB_NULLWCH (m))
- wc = L'\0';
- switch (nop)
- {
- default:
- case CASE_NOOP: nwc = wc; break;
- case CASE_UPPER: nwc = _to_wupper (wc); break;
- case CASE_LOWER: nwc = _to_wlower (wc); break;
- case CASE_TOGGLEALL:
- case CASE_TOGGLE: nwc = TOGGLE (wc); break;
- }
-
- /* We don't have to convert `wide' characters that are in the
- unsigned char range back to single-byte `multibyte' characters. */
- if ((int)nwc <= UCHAR_MAX && is_basic ((int)nwc))
- ret[retind++] = nwc;
- else
- {
- mlen = wcrtomb (mb, nwc, &state);
- if (mlen > 0)
- mb[mlen] = '\0';
- /* Don't assume the same width */
- strncpy (ret + retind, mb, mlen);
- retind += mlen;
- }
- }
-#endif
-
- ADVANCE_CHAR (string, end, start);
- }
-
- ret[retind] = '\0';
- return ret;
-}
+++ /dev/null
-/* locale.c - Miscellaneous internationalization functions. */
-
-/* Copyright (C) 1996-2009,2012 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 <http://www.gnu.org/licenses/>.
-*/
-
-#include "config.h"
-
-#include "bashtypes.h"
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
-
-#if HAVE_LANGINFO_CODESET
-# include <langinfo.h>
-#endif
-
-#include "bashintl.h"
-#include "bashansi.h"
-#include <stdio.h>
-#include "chartypes.h"
-#include <errno.h>
-
-#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;
- u32reset ();
- }
-# 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 (default_dir && *default_dir)
- bindtextdomain (default_domain, default_dir);
- }
-
- 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 (default_dir && *default_dir)
- bindtextdomain (default_domain, default_dir);
- 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;
- u32reset ();
- 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;
- u32reset ();
- }
-# 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;
- u32reset ();
-
-#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') /* <NL> -> \n"<NL>" */
- {
- *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 <NL> into `\n"<NL>"'. 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 <blank> 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
-}
+++ /dev/null
-/* pcomplete.c - functions to generate lists of matches for programmable completion. */
-
-/* Copyright (C) 1999-2012 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 <http://www.gnu.org/licenses/>.
-*/
-
-#include <config.h>
-
-#if defined (PROGRAMMABLE_COMPLETION)
-
-#include "bashtypes.h"
-#include "posixstat.h"
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
-
-#include <signal.h>
-
-#if defined (PREFER_STDARG)
-# include <stdarg.h>
-#else
-# include <varargs.h>
-#endif
-
-#include <sys/time.h>
-
-#include <stdio.h>
-#include "bashansi.h"
-#include "bashintl.h"
-
-#include "shell.h"
-#include "pcomplete.h"
-#include "alias.h"
-#include "bashline.h"
-#include "execute_cmd.h"
-#include "pathexp.h"
-
-#if defined (JOB_CONTROL)
-# include "jobs.h"
-#endif
-
-#if !defined (NSIG)
-# include "trap.h"
-#endif
-
-#include "shmbutil.h"
-
-#include "builtins.h"
-#include "builtins/common.h"
-#include "builtins/builtext.h"
-
-#include <glob/glob.h>
-#include <glob/strmatch.h>
-
-#include <readline/rlconf.h>
-#include <readline/readline.h>
-#include <readline/history.h>
-
-#define PCOMP_RETRYFAIL 256
-
-#ifdef STRDUP
-# undef STRDUP
-#endif
-#define STRDUP(x) ((x) ? savestring (x) : (char *)NULL)
-
-typedef SHELL_VAR **SVFUNC ();
-
-#ifndef HAVE_STRPBRK
-extern char *strpbrk __P((char *, char *));
-#endif
-
-extern int array_needs_making;
-extern STRING_INT_ALIST word_token_alist[];
-extern char *signal_names[];
-extern sh_builtin_func_t *last_shell_builtin, *this_shell_builtin;
-
-#if defined (DEBUG)
-#if defined (PREFER_STDARG)
-static void debug_printf (const char *, ...) __attribute__((__format__ (printf, 1, 2)));
-#endif
-#endif /* DEBUG */
-
-static int it_init_joblist __P((ITEMLIST *, int));
-
-static int it_init_aliases __P((ITEMLIST *));
-static int it_init_arrayvars __P((ITEMLIST *));
-static int it_init_bindings __P((ITEMLIST *));
-static int it_init_builtins __P((ITEMLIST *));
-static int it_init_disabled __P((ITEMLIST *));
-static int it_init_enabled __P((ITEMLIST *));
-static int it_init_exported __P((ITEMLIST *));
-static int it_init_functions __P((ITEMLIST *));
-static int it_init_helptopics __P((ITEMLIST *));
-static int it_init_hostnames __P((ITEMLIST *));
-static int it_init_jobs __P((ITEMLIST *));
-static int it_init_running __P((ITEMLIST *));
-static int it_init_stopped __P((ITEMLIST *));
-static int it_init_keywords __P((ITEMLIST *));
-static int it_init_signals __P((ITEMLIST *));
-static int it_init_variables __P((ITEMLIST *));
-static int it_init_setopts __P((ITEMLIST *));
-static int it_init_shopts __P((ITEMLIST *));
-
-static int shouldexp_filterpat __P((char *));
-static char *preproc_filterpat __P((char *, const char *));
-
-static void init_itemlist_from_varlist __P((ITEMLIST *, SVFUNC *));
-
-static STRINGLIST *gen_matches_from_itemlist __P((ITEMLIST *, const char *));
-static STRINGLIST *gen_action_completions __P((COMPSPEC *, const char *));
-static STRINGLIST *gen_globpat_matches __P((COMPSPEC *, const char *));
-static STRINGLIST *gen_wordlist_matches __P((COMPSPEC *, const char *));
-static STRINGLIST *gen_shell_function_matches __P((COMPSPEC *, const char *,
- const char *,
- char *, int, WORD_LIST *,
- int, int, int *));
-static STRINGLIST *gen_command_matches __P((COMPSPEC *, const char *,
- const char *,
- char *, int, WORD_LIST *,
- int, int));
-
-static STRINGLIST *gen_progcomp_completions __P((const char *, const char *,
- const char *,
- int, int, int *, int *,
- COMPSPEC **));
-
-static char *pcomp_filename_completion_function __P((const char *, int));
-
-#if defined (ARRAY_VARS)
-static SHELL_VAR *bind_comp_words __P((WORD_LIST *));
-#endif
-static void bind_compfunc_variables __P((char *, int, WORD_LIST *, int, int));
-static void unbind_compfunc_variables __P((int));
-static WORD_LIST *build_arg_list __P((char *, const char *, const char *, WORD_LIST *, int));
-static WORD_LIST *command_line_to_word_list __P((char *, int, int, int *, int *));
-
-#ifdef DEBUG
-static int progcomp_debug = 0;
-#endif
-
-int prog_completion_enabled = 1;
-
-/* These are used to manage the arrays of strings for possible completions. */
-ITEMLIST it_aliases = { 0, it_init_aliases, (STRINGLIST *)0 };
-ITEMLIST it_arrayvars = { LIST_DYNAMIC, it_init_arrayvars, (STRINGLIST *)0 };
-ITEMLIST it_bindings = { 0, it_init_bindings, (STRINGLIST *)0 };
-ITEMLIST it_builtins = { 0, it_init_builtins, (STRINGLIST *)0 };
-ITEMLIST it_commands = { LIST_DYNAMIC }; /* unused */
-ITEMLIST it_directories = { LIST_DYNAMIC }; /* unused */
-ITEMLIST it_disabled = { 0, it_init_disabled, (STRINGLIST *)0 };
-ITEMLIST it_enabled = { 0, it_init_enabled, (STRINGLIST *)0 };
-ITEMLIST it_exports = { LIST_DYNAMIC, it_init_exported, (STRINGLIST *)0 };
-ITEMLIST it_files = { LIST_DYNAMIC }; /* unused */
-ITEMLIST it_functions = { 0, it_init_functions, (STRINGLIST *)0 };
-ITEMLIST it_helptopics = { 0, it_init_helptopics, (STRINGLIST *)0 };
-ITEMLIST it_hostnames = { LIST_DYNAMIC, it_init_hostnames, (STRINGLIST *)0 };
-ITEMLIST it_groups = { LIST_DYNAMIC }; /* unused */
-ITEMLIST it_jobs = { LIST_DYNAMIC, it_init_jobs, (STRINGLIST *)0 };
-ITEMLIST it_keywords = { 0, it_init_keywords, (STRINGLIST *)0 };
-ITEMLIST it_running = { LIST_DYNAMIC, it_init_running, (STRINGLIST *)0 };
-ITEMLIST it_services = { LIST_DYNAMIC }; /* unused */
-ITEMLIST it_setopts = { 0, it_init_setopts, (STRINGLIST *)0 };
-ITEMLIST it_shopts = { 0, it_init_shopts, (STRINGLIST *)0 };
-ITEMLIST it_signals = { 0, it_init_signals, (STRINGLIST *)0 };
-ITEMLIST it_stopped = { LIST_DYNAMIC, it_init_stopped, (STRINGLIST *)0 };
-ITEMLIST it_users = { LIST_DYNAMIC }; /* unused */
-ITEMLIST it_variables = { LIST_DYNAMIC, it_init_variables, (STRINGLIST *)0 };
-
-COMPSPEC *pcomp_curcs;
-const char *pcomp_curcmd;
-const char *pcomp_curtxt;
-
-#ifdef DEBUG
-/* Debugging code */
-static void
-#if defined (PREFER_STDARG)
-debug_printf (const char *format, ...)
-#else
-debug_printf (format, va_alist)
- const char *format;
- va_dcl
-#endif
-{
- va_list args;
-
- if (progcomp_debug == 0)
- return;
-
- SH_VA_START (args, format);
-
- fprintf (stdout, "DEBUG: ");
- vfprintf (stdout, format, args);
- fprintf (stdout, "\n");
-
- rl_on_new_line ();
-
- va_end (args);
-}
-#endif
-
-/* Functions to manage the item lists */
-
-void
-set_itemlist_dirty (it)
- ITEMLIST *it;
-{
- it->flags |= LIST_DIRTY;
-}
-
-void
-initialize_itemlist (itp)
- ITEMLIST *itp;
-{
- (*itp->list_getter) (itp);
- itp->flags |= LIST_INITIALIZED;
- itp->flags &= ~LIST_DIRTY;
-}
-
-void
-clean_itemlist (itp)
- ITEMLIST *itp;
-{
- STRINGLIST *sl;
-
- sl = itp->slist;
- if (sl)
- {
- if ((itp->flags & (LIST_DONTFREEMEMBERS|LIST_DONTFREE)) == 0)
- strvec_flush (sl->list);
- if ((itp->flags & LIST_DONTFREE) == 0)
- free (sl->list);
- free (sl);
- }
- itp->slist = (STRINGLIST *)NULL;
- itp->flags &= ~(LIST_DONTFREE|LIST_DONTFREEMEMBERS|LIST_INITIALIZED|LIST_DIRTY);
-}
-
-
-static int
-shouldexp_filterpat (s)
- char *s;
-{
- register char *p;
-
- for (p = s; p && *p; p++)
- {
- if (*p == '\\')
- p++;
- else if (*p == '&')
- return 1;
- }
- return 0;
-}
-
-/* Replace any instance of `&' in PAT with TEXT. Backslash may be used to
- quote a `&' and inhibit substitution. Returns a new string. This just
- calls stringlib.c:strcreplace(). */
-static char *
-preproc_filterpat (pat, text)
- char *pat;
- const char *text;
-{
- char *ret;
-
- ret = strcreplace (pat, '&', text, 1);
- return ret;
-}
-
-/* Remove any match of FILTERPAT from SL. A `&' in FILTERPAT is replaced by
- TEXT. A leading `!' in FILTERPAT negates the pattern; in this case
- any member of SL->list that does *not* match will be removed. This returns
- a new STRINGLIST with the matching members of SL *copied*. Any
- non-matching members of SL->list are *freed*. */
-STRINGLIST *
-filter_stringlist (sl, filterpat, text)
- STRINGLIST *sl;
- char *filterpat;
- const char *text;
-{
- int i, m, not;
- STRINGLIST *ret;
- char *npat, *t;
-
- if (sl == 0 || sl->list == 0 || sl->list_len == 0)
- return sl;
-
- npat = shouldexp_filterpat (filterpat) ? preproc_filterpat (filterpat, text) : filterpat;
-
-#if defined (EXTENDED_GLOB)
- not = (npat[0] == '!' && (extended_glob == 0 || npat[1] != '(')); /*)*/
-#else
- not = (npat[0] == '!');
-#endif
- t = not ? npat + 1 : npat;
-
- ret = strlist_create (sl->list_size);
- for (i = 0; i < sl->list_len; i++)
- {
- m = strmatch (t, sl->list[i], FNMATCH_EXTFLAG | FNMATCH_IGNCASE);
- if ((not && m == FNM_NOMATCH) || (not == 0 && m != FNM_NOMATCH))
- free (sl->list[i]);
- else
- ret->list[ret->list_len++] = sl->list[i];
- }
-
- ret->list[ret->list_len] = (char *)NULL;
- if (npat != filterpat)
- free (npat);
-
- return ret;
-}
-
-/* Turn an array of strings returned by rl_completion_matches into a STRINGLIST.
- This understands how rl_completion_matches sets matches[0] (the lcd of the
- strings in the list, unless it's the only match). */
-STRINGLIST *
-completions_to_stringlist (matches)
- char **matches;
-{
- STRINGLIST *sl;
- int mlen, i, n;
-
- mlen = (matches == 0) ? 0 : strvec_len (matches);
- sl = strlist_create (mlen + 1);
-
- if (matches == 0 || matches[0] == 0)
- return sl;
-
- if (matches[1] == 0)
- {
- sl->list[0] = STRDUP (matches[0]);
- sl->list[sl->list_len = 1] = (char *)NULL;
- return sl;
- }
-
- for (i = 1, n = 0; i < mlen; i++, n++)
- sl->list[n] = STRDUP (matches[i]);
- sl->list_len = n;
- sl->list[n] = (char *)NULL;
-
- return sl;
-}
-
-/* Functions to manage the various ITEMLISTs that we populate internally.
- The caller is responsible for setting ITP->flags correctly. */
-
-static int
-it_init_aliases (itp)
- ITEMLIST *itp;
-{
-#ifdef ALIAS
- alias_t **alias_list;
- register int i, n;
- STRINGLIST *sl;
-
- alias_list = all_aliases ();
- if (alias_list == 0)
- {
- itp->slist = (STRINGLIST *)NULL;
- return 0;
- }
- for (n = 0; alias_list[n]; n++)
- ;
- sl = strlist_create (n+1);
- for (i = 0; i < n; i++)
- sl->list[i] = STRDUP (alias_list[i]->name);
- sl->list[n] = (char *)NULL;
- sl->list_size = sl->list_len = n;
- itp->slist = sl;
-#else
- itp->slist = (STRINGLIST *)NULL;
-#endif
- free (alias_list);
- return 1;
-}
-
-static void
-init_itemlist_from_varlist (itp, svfunc)
- ITEMLIST *itp;
- SVFUNC *svfunc;
-{
- SHELL_VAR **vlist;
- STRINGLIST *sl;
- register int i, n;
-
- vlist = (*svfunc) ();
- if (vlist == 0)
- {
- itp->slist = (STRINGLIST *)NULL;
- return;
- }
- for (n = 0; vlist[n]; n++)
- ;
- sl = strlist_create (n+1);
- for (i = 0; i < n; i++)
- sl->list[i] = savestring (vlist[i]->name);
- sl->list[sl->list_len = n] = (char *)NULL;
- itp->slist = sl;
-}
-
-static int
-it_init_arrayvars (itp)
- ITEMLIST *itp;
-{
-#if defined (ARRAY_VARS)
- init_itemlist_from_varlist (itp, all_array_variables);
- return 1;
-#else
- return 0;
-#endif
-}
-
-static int
-it_init_bindings (itp)
- ITEMLIST *itp;
-{
- char **blist;
- STRINGLIST *sl;
-
- /* rl_funmap_names allocates blist, but not its members */
- blist = (char **)rl_funmap_names (); /* XXX fix const later */
- sl = strlist_create (0);
- sl->list = blist;
- sl->list_size = 0;
- sl->list_len = strvec_len (sl->list);
- itp->flags |= LIST_DONTFREEMEMBERS;
- itp->slist = sl;
-
- return 0;
-}
-
-static int
-it_init_builtins (itp)
- ITEMLIST *itp;
-{
- STRINGLIST *sl;
- register int i, n;
-
- sl = strlist_create (num_shell_builtins);
- for (i = n = 0; i < num_shell_builtins; i++)
- if (shell_builtins[i].function)
- sl->list[n++] = shell_builtins[i].name;
- sl->list[sl->list_len = n] = (char *)NULL;
- itp->flags |= LIST_DONTFREEMEMBERS;
- itp->slist = sl;
- return 0;
-}
-
-static int
-it_init_enabled (itp)
- ITEMLIST *itp;
-{
- STRINGLIST *sl;
- register int i, n;
-
- sl = strlist_create (num_shell_builtins);
- for (i = n = 0; i < num_shell_builtins; i++)
- {
- if (shell_builtins[i].function && (shell_builtins[i].flags & BUILTIN_ENABLED))
- sl->list[n++] = shell_builtins[i].name;
- }
- sl->list[sl->list_len = n] = (char *)NULL;
- itp->flags |= LIST_DONTFREEMEMBERS;
- itp->slist = sl;
- return 0;
-}
-
-static int
-it_init_disabled (itp)
- ITEMLIST *itp;
-{
- STRINGLIST *sl;
- register int i, n;
-
- sl = strlist_create (num_shell_builtins);
- for (i = n = 0; i < num_shell_builtins; i++)
- {
- if (shell_builtins[i].function && ((shell_builtins[i].flags & BUILTIN_ENABLED) == 0))
- sl->list[n++] = shell_builtins[i].name;
- }
- sl->list[sl->list_len = n] = (char *)NULL;
- itp->flags |= LIST_DONTFREEMEMBERS;
- itp->slist = sl;
- return 0;
-}
-
-static int
-it_init_exported (itp)
- ITEMLIST *itp;
-{
- init_itemlist_from_varlist (itp, all_exported_variables);
- return 0;
-}
-
-static int
-it_init_functions (itp)
- ITEMLIST *itp;
-{
- init_itemlist_from_varlist (itp, all_visible_functions);
- return 0;
-}
-
-/* Like it_init_builtins, but includes everything the help builtin looks at,
- not just builtins with an active implementing function. */
-static int
-it_init_helptopics (itp)
- ITEMLIST *itp;
-{
- STRINGLIST *sl;
- register int i, n;
-
- sl = strlist_create (num_shell_builtins);
- for (i = n = 0; i < num_shell_builtins; i++)
- sl->list[n++] = shell_builtins[i].name;
- sl->list[sl->list_len = n] = (char *)NULL;
- itp->flags |= LIST_DONTFREEMEMBERS;
- itp->slist = sl;
- return 0;
-}
-
-static int
-it_init_hostnames (itp)
- ITEMLIST *itp;
-{
- STRINGLIST *sl;
-
- sl = strlist_create (0);
- sl->list = get_hostname_list ();
- sl->list_len = sl->list ? strvec_len (sl->list) : 0;
- sl->list_size = sl->list_len;
- itp->slist = sl;
- itp->flags |= LIST_DONTFREEMEMBERS|LIST_DONTFREE;
- return 0;
-}
-
-static int
-it_init_joblist (itp, jstate)
- ITEMLIST *itp;
- int jstate;
-{
-#if defined (JOB_CONTROL)
- STRINGLIST *sl;
- register int i;
- register PROCESS *p;
- char *s, *t;
- JOB *j;
- JOB_STATE ws; /* wanted state */
-
- ws = JNONE;
- if (jstate == 0)
- ws = JRUNNING;
- else if (jstate == 1)
- ws = JSTOPPED;
-
- sl = strlist_create (js.j_jobslots);
- for (i = js.j_jobslots - 1; i >= 0; i--)
- {
- j = get_job_by_jid (i);
- if (j == 0)
- continue;
- p = j->pipe;
- if (jstate == -1 || JOBSTATE(i) == ws)
- {
- s = savestring (p->command);
- t = strpbrk (s, " \t\n");
- if (t)
- *t = '\0';
- sl->list[sl->list_len++] = s;
- }
- }
- itp->slist = sl;
-#else
- itp->slist = (STRINGLIST *)NULL;
-#endif
- return 0;
-}
-
-static int
-it_init_jobs (itp)
- ITEMLIST *itp;
-{
- return (it_init_joblist (itp, -1));
-}
-
-static int
-it_init_running (itp)
- ITEMLIST *itp;
-{
- return (it_init_joblist (itp, 0));
-}
-
-static int
-it_init_stopped (itp)
- ITEMLIST *itp;
-{
- return (it_init_joblist (itp, 1));
-}
-
-static int
-it_init_keywords (itp)
- ITEMLIST *itp;
-{
- STRINGLIST *sl;
- register int i, n;
-
- for (n = 0; word_token_alist[n].word; n++)
- ;
- sl = strlist_create (n);
- for (i = 0; i < n; i++)
- sl->list[i] = word_token_alist[i].word;
- sl->list[sl->list_len = i] = (char *)NULL;
- itp->flags |= LIST_DONTFREEMEMBERS;
- itp->slist = sl;
- return 0;
-}
-
-static int
-it_init_signals (itp)
- ITEMLIST *itp;
-{
- STRINGLIST *sl;
-
- sl = strlist_create (0);
- sl->list = signal_names;
- sl->list_len = strvec_len (sl->list);
- itp->flags |= LIST_DONTFREE;
- itp->slist = sl;
- return 0;
-}
-
-static int
-it_init_variables (itp)
- ITEMLIST *itp;
-{
- init_itemlist_from_varlist (itp, all_visible_variables);
- return 0;
-}
-
-static int
-it_init_setopts (itp)
- ITEMLIST *itp;
-{
- STRINGLIST *sl;
-
- sl = strlist_create (0);
- sl->list = get_minus_o_opts ();
- sl->list_len = strvec_len (sl->list);
- itp->slist = sl;
- itp->flags |= LIST_DONTFREEMEMBERS;
- return 0;
-}
-
-static int
-it_init_shopts (itp)
- ITEMLIST *itp;
-{
- STRINGLIST *sl;
-
- sl = strlist_create (0);
- sl->list = get_shopt_options ();
- sl->list_len = strvec_len (sl->list);
- itp->slist = sl;
- itp->flags |= LIST_DONTFREEMEMBERS;
- return 0;
-}
-
-/* Generate a list of all matches for TEXT using the STRINGLIST in itp->slist
- as the list of possibilities. If the itemlist has been marked dirty or
- it should be regenerated every time, destroy the old STRINGLIST and make a
- new one before trying the match. TEXT is dequoted before attempting a
- match. */
-static STRINGLIST *
-gen_matches_from_itemlist (itp, text)
- ITEMLIST *itp;
- const char *text;
-{
- STRINGLIST *ret, *sl;
- int tlen, i, n;
- char *ntxt;
-
- if ((itp->flags & (LIST_DIRTY|LIST_DYNAMIC)) ||
- (itp->flags & LIST_INITIALIZED) == 0)
- {
- if (itp->flags & (LIST_DIRTY|LIST_DYNAMIC))
- clean_itemlist (itp);
- if ((itp->flags & LIST_INITIALIZED) == 0)
- initialize_itemlist (itp);
- }
- if (itp->slist == 0)
- return ((STRINGLIST *)NULL);
- ret = strlist_create (itp->slist->list_len+1);
- sl = itp->slist;
-
- ntxt = bash_dequote_text (text);
- tlen = STRLEN (ntxt);
-
- for (i = n = 0; i < sl->list_len; i++)
- {
- if (tlen == 0 || STREQN (sl->list[i], ntxt, tlen))
- ret->list[n++] = STRDUP (sl->list[i]);
- }
- ret->list[ret->list_len = n] = (char *)NULL;
-
- FREE (ntxt);
- return ret;
-}
-
-/* A wrapper for rl_filename_completion_function that dequotes the filename
- before attempting completions. */
-static char *
-pcomp_filename_completion_function (text, state)
- const char *text;
- int state;
-{
- static char *dfn; /* dequoted filename */
- int qc;
- int iscompgen, iscompleting;
-
- if (state == 0)
- {
- FREE (dfn);
- /* remove backslashes quoting special characters in filenames. */
- /* There are roughly three paths we can follow to get here:
- 1. complete -f
- 2. compgen -f "$word" from a completion function
- 3. compgen -f "$word" from the command line
- They all need to be handled.
-
- In the first two cases, readline will run the filename dequoting
- function in rl_filename_completion_function if it found a filename
- quoting character in the word to be completed
- (rl_completion_found_quote). We run the dequoting function here
- if we're running compgen, we're not completing, and the
- rl_filename_completion_function won't dequote the filename
- (rl_completion_found_quote == 0). */
- iscompgen = this_shell_builtin == compgen_builtin;
- iscompleting = RL_ISSTATE (RL_STATE_COMPLETING);
- if (iscompgen && iscompleting == 0 && rl_completion_found_quote == 0
- && rl_filename_dequoting_function)
- {
- /* Use rl_completion_quote_character because any single or
- double quotes have been removed by the time TEXT makes it
- here, and we don't want to remove backslashes inside
- quoted strings. */
- dfn = (*rl_filename_dequoting_function) ((char *)text, rl_completion_quote_character);
- }
- /* Intended to solve a mismatched assumption by bash-completion. If
- the text to be completed is empty, but bash-completion turns it into
- a quoted string ('') assuming that this code will dequote it before
- calling readline, do the dequoting. */
- else if (iscompgen && iscompleting &&
- pcomp_curtxt && *pcomp_curtxt == 0 &&
- text && (*text == '\'' || *text == '"') && text[1] == text[0] && text[2] == 0 &&
- rl_filename_dequoting_function)
- dfn = (*rl_filename_dequoting_function) ((char *)text, rl_completion_quote_character);
- /* Another mismatched assumption by bash-completion. If compgen is being
- run as part of bash-completion, and the argument to compgen is not
- the same as the word originally passed to the programmable completion
- code, dequote the argument if it has quote characters. It's an
- attempt to detect when bash-completion is quoting its filename
- argument before calling compgen. */
- /* We could check whether gen_shell_function_matches is in the call
- stack by checking whether the gen-shell-function-matches tag is in
- the unwind-protect stack, but there's no function to do that yet.
- We could simply check whether we're executing in a function by
- checking variable_context, and may end up doing that. */
- else if (iscompgen && iscompleting && rl_filename_dequoting_function &&
- pcomp_curtxt && text &&
- STREQ (pcomp_curtxt, text) == 0 &&
- variable_context &&
- sh_contains_quotes (text)) /* guess */
- dfn = (*rl_filename_dequoting_function) ((char *)text, rl_completion_quote_character);
- else
- dfn = savestring (text);
- }
-
- return (rl_filename_completion_function (dfn, state));
-}
-
-#define GEN_COMPS(bmap, flag, it, text, glist, tlist) \
- do { \
- if (bmap & flag) \
- { \
- tlist = gen_matches_from_itemlist (it, text); \
- if (tlist) \
- { \
- glist = strlist_append (glist, tlist); \
- strlist_dispose (tlist); \
- } \
- } \
- } while (0)
-
-#define GEN_XCOMPS(bmap, flag, text, func, cmatches, glist, tlist) \
- do { \
- if (bmap & flag) \
- { \
- cmatches = rl_completion_matches (text, func); \
- tlist = completions_to_stringlist (cmatches); \
- glist = strlist_append (glist, tlist); \
- strvec_dispose (cmatches); \
- strlist_dispose (tlist); \
- } \
- } while (0)
-
-/* Functions to generate lists of matches from the actions member of CS. */
-
-static STRINGLIST *
-gen_action_completions (cs, text)
- COMPSPEC *cs;
- const char *text;
-{
- STRINGLIST *ret, *tmatches;
- char **cmatches; /* from rl_completion_matches ... */
- unsigned long flags;
- int t;
-
- ret = tmatches = (STRINGLIST *)NULL;
- flags = cs->actions;
-
- GEN_COMPS (flags, CA_ALIAS, &it_aliases, text, ret, tmatches);
- GEN_COMPS (flags, CA_ARRAYVAR, &it_arrayvars, text, ret, tmatches);
- GEN_COMPS (flags, CA_BINDING, &it_bindings, text, ret, tmatches);
- GEN_COMPS (flags, CA_BUILTIN, &it_builtins, text, ret, tmatches);
- GEN_COMPS (flags, CA_DISABLED, &it_disabled, text, ret, tmatches);
- GEN_COMPS (flags, CA_ENABLED, &it_enabled, text, ret, tmatches);
- GEN_COMPS (flags, CA_EXPORT, &it_exports, text, ret, tmatches);
- GEN_COMPS (flags, CA_FUNCTION, &it_functions, text, ret, tmatches);
- GEN_COMPS (flags, CA_HELPTOPIC, &it_helptopics, text, ret, tmatches);
- GEN_COMPS (flags, CA_HOSTNAME, &it_hostnames, text, ret, tmatches);
- GEN_COMPS (flags, CA_JOB, &it_jobs, text, ret, tmatches);
- GEN_COMPS (flags, CA_KEYWORD, &it_keywords, text, ret, tmatches);
- GEN_COMPS (flags, CA_RUNNING, &it_running, text, ret, tmatches);
- GEN_COMPS (flags, CA_SETOPT, &it_setopts, text, ret, tmatches);
- GEN_COMPS (flags, CA_SHOPT, &it_shopts, text, ret, tmatches);
- GEN_COMPS (flags, CA_SIGNAL, &it_signals, text, ret, tmatches);
- GEN_COMPS (flags, CA_STOPPED, &it_stopped, text, ret, tmatches);
- GEN_COMPS (flags, CA_VARIABLE, &it_variables, text, ret, tmatches);
-
- GEN_XCOMPS(flags, CA_COMMAND, text, command_word_completion_function, cmatches, ret, tmatches);
- GEN_XCOMPS(flags, CA_FILE, text, pcomp_filename_completion_function, cmatches, ret, tmatches);
- GEN_XCOMPS(flags, CA_USER, text, rl_username_completion_function, cmatches, ret, tmatches);
- GEN_XCOMPS(flags, CA_GROUP, text, bash_groupname_completion_function, cmatches, ret, tmatches);
- GEN_XCOMPS(flags, CA_SERVICE, text, bash_servicename_completion_function, cmatches, ret, tmatches);
-
- /* And lastly, the special case for directories */
- if (flags & CA_DIRECTORY)
- {
- t = rl_filename_completion_desired;
- rl_completion_mark_symlink_dirs = 1; /* override user preference */
- cmatches = bash_directory_completion_matches (text);
- /* If we did not want filename completion before this, and there are
- no matches, turn off rl_filename_completion_desired so whatever
- matches we get are not treated as filenames (it gets turned on by
- rl_filename_completion_function unconditionally). */
- if (t == 0 && cmatches == 0 && rl_filename_completion_desired == 1)
- rl_filename_completion_desired = 0;
- tmatches = completions_to_stringlist (cmatches);
- ret = strlist_append (ret, tmatches);
- strvec_dispose (cmatches);
- strlist_dispose (tmatches);
- }
-
- return ret;
-}
-
-/* Generate a list of matches for CS->globpat. Unresolved: should this use
- TEXT as a match prefix, or just go without? Currently, the code does not
- use TEXT, just globs CS->globpat and returns the results. If we do decide
- to use TEXT, we should call quote_string_for_globbing before the call to
- glob_filename. */
-static STRINGLIST *
-gen_globpat_matches (cs, text)
- COMPSPEC *cs;
- const char *text;
-{
- STRINGLIST *sl;
-
- sl = strlist_create (0);
- sl->list = glob_filename (cs->globpat, 0);
- if (GLOB_FAILED (sl->list))
- sl->list = (char **)NULL;
- if (sl->list)
- sl->list_len = sl->list_size = strvec_len (sl->list);
- return sl;
-}
-
-/* Perform the shell word expansions on CS->words and return the results.
- Again, this ignores TEXT. */
-static STRINGLIST *
-gen_wordlist_matches (cs, text)
- COMPSPEC *cs;
- const char *text;
-{
- WORD_LIST *l, *l2;
- STRINGLIST *sl;
- int nw, tlen;
- char *ntxt; /* dequoted TEXT to use in comparisons */
-
- if (cs->words == 0 || cs->words[0] == '\0')
- return ((STRINGLIST *)NULL);
-
- /* This used to be a simple expand_string(cs->words, 0), but that won't
- do -- there's no way to split a simple list into individual words
- that way, since the shell semantics say that word splitting is done
- only on the results of expansion. split_at_delims also handles embedded
- quoted strings and preserves the quotes for the expand_words_shellexp
- function call that follows. */
- /* XXX - this is where this function spends most of its time */
- l = split_at_delims (cs->words, strlen (cs->words), (char *)NULL, -1, 0, (int *)NULL, (int *)NULL);
- if (l == 0)
- return ((STRINGLIST *)NULL);
- /* This will jump back to the top level if the expansion fails... */
- l2 = expand_words_shellexp (l);
- dispose_words (l);
-
- nw = list_length (l2);
- sl = strlist_create (nw + 1);
-
- ntxt = bash_dequote_text (text);
- tlen = STRLEN (ntxt);
-
- for (nw = 0, l = l2; l; l = l->next)
- {
- if (tlen == 0 || STREQN (l->word->word, ntxt, tlen))
- sl->list[nw++] = STRDUP (l->word->word);
- }
- sl->list[sl->list_len = nw] = (char *)NULL;
-
- dispose_words (l2);
- FREE (ntxt);
- return sl;
-}
-
-#ifdef ARRAY_VARS
-
-static SHELL_VAR *
-bind_comp_words (lwords)
- WORD_LIST *lwords;
-{
- SHELL_VAR *v;
-
- v = find_variable ("COMP_WORDS");
- if (v == 0)
- v = make_new_array_variable ("COMP_WORDS");
- if (readonly_p (v))
- VUNSETATTR (v, att_readonly);
- if (array_p (v) == 0)
- v = convert_var_to_array (v);
- v = assign_array_var_from_word_list (v, lwords, 0);
-
- VUNSETATTR (v, att_invisible);
- return v;
-}
-#endif /* ARRAY_VARS */
-
-static void
-bind_compfunc_variables (line, ind, lwords, cw, exported)
- char *line;
- int ind;
- WORD_LIST *lwords;
- int cw, exported;
-{
- char ibuf[INT_STRLEN_BOUND(int) + 1];
- char *value;
- SHELL_VAR *v;
- size_t llen;
- int c;
-
- /* Set the variables that the function expects while it executes. Maybe
- these should be in the function environment (temporary_env). */
- v = bind_variable ("COMP_LINE", line, 0);
- if (v && exported)
- VSETATTR(v, att_exported);
-
- /* Post bash-4.2: COMP_POINT is characters instead of bytes. */
- c = line[ind];
- line[ind] = '\0';
- llen = MB_STRLEN (line);
- line[ind] = c;
- value = inttostr (llen, ibuf, sizeof(ibuf));
- v = bind_int_variable ("COMP_POINT", value);
- if (v && exported)
- VSETATTR(v, att_exported);
-
- value = inttostr (rl_completion_type, ibuf, sizeof (ibuf));
- v = bind_int_variable ("COMP_TYPE", value);
- if (v && exported)
- VSETATTR(v, att_exported);
-
- value = inttostr (rl_completion_invoking_key, ibuf, sizeof (ibuf));
- v = bind_int_variable ("COMP_KEY", value);
- if (v && exported)
- VSETATTR(v, att_exported);
-
- /* Since array variables can't be exported, we don't bother making the
- array of words. */
- if (exported == 0)
- {
-#ifdef ARRAY_VARS
- v = bind_comp_words (lwords);
- value = inttostr (cw, ibuf, sizeof(ibuf));
- bind_int_variable ("COMP_CWORD", value);
-#endif
- }
- else
- array_needs_making = 1;
-}
-
-static void
-unbind_compfunc_variables (exported)
- int exported;
-{
- unbind_variable ("COMP_LINE");
- unbind_variable ("COMP_POINT");
- unbind_variable ("COMP_TYPE");
- unbind_variable ("COMP_KEY");
-#ifdef ARRAY_VARS
- unbind_variable ("COMP_WORDS");
- unbind_variable ("COMP_CWORD");
-#endif
- if (exported)
- array_needs_making = 1;
-}
-
-/* Build the list of words to pass to a function or external command
- as arguments. When the function or command is invoked,
-
- $0 == function or command being invoked
- $1 == command name
- $2 == word to be completed (possibly null)
- $3 == previous word
-
- Functions can access all of the words in the current command line
- with the COMP_WORDS array. External commands cannot; they have to
- make do with the COMP_LINE and COMP_POINT variables. */
-
-static WORD_LIST *
-build_arg_list (cmd, cname, text, lwords, ind)
- char *cmd;
- const char *cname;
- const char *text;
- WORD_LIST *lwords;
- int ind;
-{
- WORD_LIST *ret, *cl, *l;
- WORD_DESC *w;
- int i;
-
- ret = (WORD_LIST *)NULL;
- w = make_word (cmd);
- ret = make_word_list (w, (WORD_LIST *)NULL); /* $0 */
-
- w = make_word (cname); /* $1 */
- cl = ret->next = make_word_list (w, (WORD_LIST *)NULL);
-
- w = make_word (text);
- cl->next = make_word_list (w, (WORD_LIST *)NULL); /* $2 */
- cl = cl->next;
-
- /* Search lwords for current word */
- for (l = lwords, i = 1; l && i < ind-1; l = l->next, i++)
- ;
- w = (l && l->word) ? copy_word (l->word) : make_word ("");
- cl->next = make_word_list (w, (WORD_LIST *)NULL);
-
- return ret;
-}
-
-/* Build a command string with
- $0 == cs->funcname (function to execute for completion list)
- $1 == command name (command being completed)
- $2 = word to be completed (possibly null)
- $3 = previous word
- and run in the current shell. The function should put its completion
- list into the array variable COMPREPLY. We build a STRINGLIST
- from the results and return it.
-
- Since the shell function should return its list of matches in an array
- variable, this does nothing if arrays are not compiled into the shell. */
-
-static STRINGLIST *
-gen_shell_function_matches (cs, cmd, text, line, ind, lwords, nw, cw, foundp)
- COMPSPEC *cs;
- const char *cmd;
- const char *text;
- char *line;
- int ind;
- WORD_LIST *lwords;
- int nw, cw;
- int *foundp;
-{
- char *funcname;
- STRINGLIST *sl;
- SHELL_VAR *f, *v;
- WORD_LIST *cmdlist;
- int fval, found;
- sh_parser_state_t ps;
- sh_parser_state_t * restrict pps;
-#if defined (ARRAY_VARS)
- ARRAY *a;
-#endif
-
- found = 0;
- if (foundp)
- *foundp = found;
-
- funcname = cs->funcname;
- f = find_function (funcname);
- if (f == 0)
- {
- internal_error (_("completion: function `%s' not found"), funcname);
- rl_ding ();
- rl_on_new_line ();
- return ((STRINGLIST *)NULL);
- }
-
-#if !defined (ARRAY_VARS)
- return ((STRINGLIST *)NULL);
-#else
-
- /* We pass cw - 1 because command_line_to_word_list returns indices that are
- 1-based, while bash arrays are 0-based. */
- bind_compfunc_variables (line, ind, lwords, cw - 1, 0);
-
- cmdlist = build_arg_list (funcname, cmd, text, lwords, cw);
-
- pps = &ps;
- save_parser_state (pps);
- begin_unwind_frame ("gen-shell-function-matches");
- add_unwind_protect (restore_parser_state, (char *)pps);
- add_unwind_protect (dispose_words, (char *)cmdlist);
- add_unwind_protect (unbind_compfunc_variables, (char *)0);
-
- fval = execute_shell_function (f, cmdlist);
-
- discard_unwind_frame ("gen-shell-function-matches");
- restore_parser_state (pps);
-
- found = fval != EX_NOTFOUND;
- if (fval == EX_RETRYFAIL)
- found |= PCOMP_RETRYFAIL;
- if (foundp)
- *foundp = found;
-
- /* Now clean up and destroy everything. */
- dispose_words (cmdlist);
- unbind_compfunc_variables (0);
-
- /* The list of completions is returned in the array variable COMPREPLY. */
- v = find_variable ("COMPREPLY");
- if (v == 0)
- return ((STRINGLIST *)NULL);
- if (array_p (v) == 0)
- v = convert_var_to_array (v);
-
- VUNSETATTR (v, att_invisible);
-
- a = array_cell (v);
- if (found == 0 || (found & PCOMP_RETRYFAIL) || a == 0 || array_empty (a))
- sl = (STRINGLIST *)NULL;
- else
- {
- /* XXX - should we filter the list of completions so only those matching
- TEXT are returned? Right now, we do not. */
- sl = strlist_create (0);
- sl->list = array_to_argv (a);
- sl->list_len = sl->list_size = array_num_elements (a);
- }
-
- /* XXX - should we unbind COMPREPLY here? */
- unbind_variable ("COMPREPLY");
-
- return (sl);
-#endif
-}
-
-/* Build a command string with
- $0 == cs->command (command to execute for completion list)
- $1 == command name (command being completed)
- $2 == word to be completed (possibly null)
- $3 == previous word
- and run in with command substitution. Parse the results, one word
- per line, with backslashes allowed to escape newlines. Build a
- STRINGLIST from the results and return it. */
-
-static STRINGLIST *
-gen_command_matches (cs, cmd, text, line, ind, lwords, nw, cw)
- COMPSPEC *cs;
- const char *cmd;
- const char *text;
- char *line;
- int ind;
- WORD_LIST *lwords;
- int nw, cw;
-{
- char *csbuf, *cscmd, *t;
- int cmdlen, cmdsize, n, ws, we;
- WORD_LIST *cmdlist, *cl;
- WORD_DESC *tw;
- STRINGLIST *sl;
-
- bind_compfunc_variables (line, ind, lwords, cw, 1);
- cmdlist = build_arg_list (cs->command, cmd, text, lwords, cw);
-
- /* Estimate the size needed for the buffer. */
- n = strlen (cs->command);
- cmdsize = n + 1;
- for (cl = cmdlist->next; cl; cl = cl->next)
- cmdsize += STRLEN (cl->word->word) + 3;
- cmdsize += 2;
-
- /* allocate the string for the command and fill it in. */
- cscmd = (char *)xmalloc (cmdsize + 1);
-
- strcpy (cscmd, cs->command); /* $0 */
- cmdlen = n;
- cscmd[cmdlen++] = ' ';
- for (cl = cmdlist->next; cl; cl = cl->next) /* $1, $2, $3, ... */
- {
- t = sh_single_quote (cl->word->word ? cl->word->word : "");
- n = strlen (t);
- RESIZE_MALLOCED_BUFFER (cscmd, cmdlen, n + 2, cmdsize, 64);
- strcpy (cscmd + cmdlen, t);
- cmdlen += n;
- if (cl->next)
- cscmd[cmdlen++] = ' ';
- free (t);
- }
- cscmd[cmdlen] = '\0';
-
- tw = command_substitute (cscmd, 0);
- csbuf = tw ? tw->word : (char *)NULL;
- if (tw)
- dispose_word_desc (tw);
-
- /* Now clean up and destroy everything. */
- dispose_words (cmdlist);
- free (cscmd);
- unbind_compfunc_variables (1);
-
- if (csbuf == 0 || *csbuf == '\0')
- {
- FREE (csbuf);
- return ((STRINGLIST *)NULL);
- }
-
- /* Now break CSBUF up at newlines, with backslash allowed to escape a
- newline, and put the individual words into a STRINGLIST. */
- sl = strlist_create (16);
- for (ws = 0; csbuf[ws]; )
- {
- we = ws;
- while (csbuf[we] && csbuf[we] != '\n')
- {
- if (csbuf[we] == '\\' && csbuf[we+1] == '\n')
- we++;
- we++;
- }
- t = substring (csbuf, ws, we);
- if (sl->list_len >= sl->list_size - 1)
- strlist_resize (sl, sl->list_size + 16);
- sl->list[sl->list_len++] = t;
- while (csbuf[we] == '\n') we++;
- ws = we;
- }
- sl->list[sl->list_len] = (char *)NULL;
-
- free (csbuf);
- return (sl);
-}
-
-static WORD_LIST *
-command_line_to_word_list (line, llen, sentinel, nwp, cwp)
- char *line;
- int llen, sentinel, *nwp, *cwp;
-{
- WORD_LIST *ret;
- char *delims;
-
-#if 0
- delims = "()<>;&| \t\n"; /* shell metacharacters break words */
-#else
- delims = rl_completer_word_break_characters;
-#endif
- ret = split_at_delims (line, llen, delims, sentinel, SD_NOQUOTEDELIM, nwp, cwp);
- return (ret);
-}
-
-/* Evaluate COMPSPEC *cs and return all matches for WORD. */
-
-STRINGLIST *
-gen_compspec_completions (cs, cmd, word, start, end, foundp)
- COMPSPEC *cs;
- const char *cmd;
- const char *word;
- int start, end;
- int *foundp;
-{
- STRINGLIST *ret, *tmatches;
- char *line;
- int llen, nw, cw, found, foundf;
- WORD_LIST *lwords;
- WORD_DESC *lw;
- COMPSPEC *tcs;
-
- found = 1;
-
-#ifdef DEBUG
- debug_printf ("gen_compspec_completions (%s, %s, %d, %d)", cmd, word, start, end);
- debug_printf ("gen_compspec_completions: %s -> %p", cmd, cs);
-#endif
- ret = gen_action_completions (cs, word);
-#ifdef DEBUG
- if (ret && progcomp_debug)
- {
- debug_printf ("gen_action_completions (%p, %s) -->", cs, word);
- strlist_print (ret, "\t");
- rl_on_new_line ();
- }
-#endif
-
- /* Now we start generating completions based on the other members of CS. */
- if (cs->globpat)
- {
- tmatches = gen_globpat_matches (cs, word);
- if (tmatches)
- {
-#ifdef DEBUG
- if (progcomp_debug)
- {
- debug_printf ("gen_globpat_matches (%p, %s) -->", cs, word);
- strlist_print (tmatches, "\t");
- rl_on_new_line ();
- }
-#endif
- ret = strlist_append (ret, tmatches);
- strlist_dispose (tmatches);
- rl_filename_completion_desired = 1;
- }
- }
-
- if (cs->words)
- {
- tmatches = gen_wordlist_matches (cs, word);
- if (tmatches)
- {
-#ifdef DEBUG
- if (progcomp_debug)
- {
- debug_printf ("gen_wordlist_matches (%p, %s) -->", cs, word);
- strlist_print (tmatches, "\t");
- rl_on_new_line ();
- }
-#endif
- ret = strlist_append (ret, tmatches);
- strlist_dispose (tmatches);
- }
- }
-
- lwords = (WORD_LIST *)NULL;
- line = (char *)NULL;
- if (cs->command || cs->funcname)
- {
- /* If we have a command or function to execute, we need to first break
- the command line into individual words, find the number of words,
- and find the word in the list containing the word to be completed. */
- line = substring (rl_line_buffer, start, end);
- llen = end - start;
-
-#ifdef DEBUG
- debug_printf ("command_line_to_word_list (%s, %d, %d, %p, %p)",
- line, llen, rl_point - start, &nw, &cw);
-#endif
- lwords = command_line_to_word_list (line, llen, rl_point - start, &nw, &cw);
- /* If we skipped a NULL word at the beginning of the line, add it back */
- if (lwords && lwords->word && cmd[0] == 0 && lwords->word->word[0] != 0)
- {
- lw = make_bare_word (cmd);
- lwords = make_word_list (lw, lwords);
- nw++;
- cw++;
- }
-#ifdef DEBUG
- if (lwords == 0 && llen > 0)
- debug_printf ("ERROR: command_line_to_word_list returns NULL");
- else if (progcomp_debug)
- {
- debug_printf ("command_line_to_word_list -->");
- printf ("\t");
- print_word_list (lwords, "!");
- printf ("\n");
- fflush(stdout);
- rl_on_new_line ();
- }
-#endif
- }
-
- if (cs->funcname)
- {
- foundf = 0;
- tmatches = gen_shell_function_matches (cs, cmd, word, line, rl_point - start, lwords, nw, cw, &foundf);
- if (foundf != 0)
- found = foundf;
- if (tmatches)
- {
-#ifdef DEBUG
- if (progcomp_debug)
- {
- debug_printf ("gen_shell_function_matches (%p, %s, %s, %p, %d, %d) -->", cs, cmd, word, lwords, nw, cw);
- strlist_print (tmatches, "\t");
- rl_on_new_line ();
- }
-#endif
- ret = strlist_append (ret, tmatches);
- strlist_dispose (tmatches);
- }
- }
-
- if (cs->command)
- {
- tmatches = gen_command_matches (cs, cmd, word, line, rl_point - start, lwords, nw, cw);
- if (tmatches)
- {
-#ifdef DEBUG
- if (progcomp_debug)
- {
- debug_printf ("gen_command_matches (%p, %s, %s, %p, %d, %d) -->", cs, cmd, word, lwords, nw, cw);
- strlist_print (tmatches, "\t");
- rl_on_new_line ();
- }
-#endif
- ret = strlist_append (ret, tmatches);
- strlist_dispose (tmatches);
- }
- }
-
- if (cs->command || cs->funcname)
- {
- if (lwords)
- dispose_words (lwords);
- FREE (line);
- }
-
- if (foundp)
- *foundp = found;
-
- if (found == 0 || (found & PCOMP_RETRYFAIL))
- {
- strlist_dispose (ret);
- return NULL;
- }
-
- if (cs->filterpat)
- {
- tmatches = filter_stringlist (ret, cs->filterpat, word);
-#ifdef DEBUG
- if (progcomp_debug)
- {
- debug_printf ("filter_stringlist (%p, %s, %s) -->", ret, cs->filterpat, word);
- strlist_print (tmatches, "\t");
- rl_on_new_line ();
- }
-#endif
- if (ret && ret != tmatches)
- {
- FREE (ret->list);
- free (ret);
- }
- ret = tmatches;
- }
-
- if (cs->prefix || cs->suffix)
- ret = strlist_prefix_suffix (ret, cs->prefix, cs->suffix);
-
- /* If no matches have been generated and the user has specified that
- directory completion should be done as a default, call
- gen_action_completions again to generate a list of matching directory
- names. */
- if ((ret == 0 || ret->list_len == 0) && (cs->options & COPT_DIRNAMES))
- {
- tcs = compspec_create ();
- tcs->actions = CA_DIRECTORY;
- FREE (ret);
- ret = gen_action_completions (tcs, word);
- compspec_dispose (tcs);
- }
- else if (cs->options & COPT_PLUSDIRS)
- {
- tcs = compspec_create ();
- tcs->actions = CA_DIRECTORY;
- tmatches = gen_action_completions (tcs, word);
- ret = strlist_append (ret, tmatches);
- strlist_dispose (tmatches);
- compspec_dispose (tcs);
- }
-
- return (ret);
-}
-
-void
-pcomp_set_readline_variables (flags, nval)
- int flags, nval;
-{
- /* If the user specified that the compspec returns filenames, make
- sure that readline knows it. */
- if (flags & COPT_FILENAMES)
- rl_filename_completion_desired = nval;
- /* If the user doesn't want a space appended, tell readline. */
- if (flags & COPT_NOSPACE)
- rl_completion_suppress_append = nval;
- /* The value here is inverted, since the default is on and the `noquote'
- option is supposed to turn it off */
- if (flags & COPT_NOQUOTE)
- rl_filename_quoting_desired = 1 - nval;
-}
-
-/* Set or unset FLAGS in the options word of the current compspec.
- SET_OR_UNSET is 1 for setting, 0 for unsetting. */
-void
-pcomp_set_compspec_options (cs, flags, set_or_unset)
- COMPSPEC *cs;
- int flags, set_or_unset;
-{
- if (cs == 0 && ((cs = pcomp_curcs) == 0))
- return;
- if (set_or_unset)
- cs->options |= flags;
- else
- cs->options &= ~flags;
-}
-
-static STRINGLIST *
-gen_progcomp_completions (ocmd, cmd, word, start, end, foundp, retryp, lastcs)
- const char *ocmd;
- const char *cmd;
- const char *word;
- int start, end;
- int *foundp, *retryp;
- COMPSPEC **lastcs;
-{
- COMPSPEC *cs, *oldcs;
- const char *oldcmd, *oldtxt;
- STRINGLIST *ret;
-
- cs = progcomp_search (ocmd);
-
- if (cs == 0 || cs == *lastcs)
- {
-#if 0
- if (foundp)
- *foundp = 0;
-#endif
- return (NULL);
- }
-
- if (*lastcs)
- compspec_dispose (*lastcs);
- cs->refcount++; /* XXX */
- *lastcs = cs;
-
- cs = compspec_copy (cs);
-
- oldcs = pcomp_curcs;
- oldcmd = pcomp_curcmd;
- oldtxt = pcomp_curtxt;
-
- pcomp_curcs = cs;
- pcomp_curcmd = cmd;
- pcomp_curtxt = word;
-
- ret = gen_compspec_completions (cs, cmd, word, start, end, foundp);
-
- pcomp_curcs = oldcs;
- pcomp_curcmd = oldcmd;
- pcomp_curtxt = oldtxt;
-
- /* We need to conditionally handle setting *retryp here */
- if (retryp)
- *retryp = foundp && (*foundp & PCOMP_RETRYFAIL);
-
- if (foundp)
- {
- *foundp &= ~PCOMP_RETRYFAIL;
- *foundp |= cs->options;
- }
-
- compspec_dispose (cs);
- return ret;
-}
-
-/* The driver function for the programmable completion code. Returns a list
- of matches for WORD, which is an argument to command CMD. START and END
- bound the command currently being completed in rl_line_buffer. */
-char **
-programmable_completions (cmd, word, start, end, foundp)
- const char *cmd;
- const char *word;
- int start, end, *foundp;
-{
- COMPSPEC *cs, *lastcs;
- STRINGLIST *ret;
- char **rmatches, *t;
- int found, retry, count;
-
- lastcs = 0;
- found = count = 0;
-
- do
- {
- retry = 0;
-
- /* We look at the basename of CMD if the full command does not have
- an associated COMPSPEC. */
- ret = gen_progcomp_completions (cmd, cmd, word, start, end, &found, &retry, &lastcs);
- if (found == 0)
- {
- t = strrchr (cmd, '/');
- if (t && *(++t))
- ret = gen_progcomp_completions (t, cmd, word, start, end, &found, &retry, &lastcs);
- }
-
- if (found == 0)
- ret = gen_progcomp_completions (DEFAULTCMD, cmd, word, start, end, &found, &retry, &lastcs);
-
- count++;
-
- if (count > 32)
- {
- internal_warning ("programmable_completion: %s: possible retry loop", cmd);
- break;
- }
- }
- while (retry);
-
- if (ret)
- {
- rmatches = ret->list;
- free (ret);
- }
- else
- rmatches = (char **)NULL;
-
- if (foundp)
- *foundp = found;
-
- if (lastcs) /* XXX - should be while? */
- compspec_dispose (lastcs);
-
- return (rmatches);
-}
-
-#endif /* PROGRAMMABLE_COMPLETION */
+++ /dev/null
-/* pcomplete.h - structure definitions and other stuff for programmable
- completion. */
-
-/* Copyright (C) 1999-2009 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 <http://www.gnu.org/licenses/>.
-*/
-
-#if !defined (_PCOMPLETE_H_)
-# define _PCOMPLETE_H_
-
-#include "stdc.h"
-#include "hashlib.h"
-
-typedef struct compspec {
- int refcount;
- unsigned long actions;
- unsigned long options;
- char *globpat;
- char *words;
- char *prefix;
- char *suffix;
- char *funcname;
- char *command;
- char *lcommand;
- char *filterpat;
-} COMPSPEC;
-
-/* Values for COMPSPEC actions. These are things the shell knows how to
- build internally. */
-#define CA_ALIAS (1<<0)
-#define CA_ARRAYVAR (1<<1)
-#define CA_BINDING (1<<2)
-#define CA_BUILTIN (1<<3)
-#define CA_COMMAND (1<<4)
-#define CA_DIRECTORY (1<<5)
-#define CA_DISABLED (1<<6)
-#define CA_ENABLED (1<<7)
-#define CA_EXPORT (1<<8)
-#define CA_FILE (1<<9)
-#define CA_FUNCTION (1<<10)
-#define CA_GROUP (1<<11)
-#define CA_HELPTOPIC (1<<12)
-#define CA_HOSTNAME (1<<13)
-#define CA_JOB (1<<14)
-#define CA_KEYWORD (1<<15)
-#define CA_RUNNING (1<<16)
-#define CA_SERVICE (1<<17)
-#define CA_SETOPT (1<<18)
-#define CA_SHOPT (1<<19)
-#define CA_SIGNAL (1<<20)
-#define CA_STOPPED (1<<21)
-#define CA_USER (1<<22)
-#define CA_VARIABLE (1<<23)
-
-/* Values for COMPSPEC options field. */
-#define COPT_RESERVED (1<<0) /* reserved for other use */
-#define COPT_DEFAULT (1<<1)
-#define COPT_FILENAMES (1<<2)
-#define COPT_DIRNAMES (1<<3)
-#define COPT_NOQUOTE (1<<4)
-#define COPT_NOSPACE (1<<5)
-#define COPT_BASHDEFAULT (1<<6)
-#define COPT_PLUSDIRS (1<<7)
-
-/* List of items is used by the code that implements the programmable
- completions. */
-typedef struct _list_of_items {
- int flags;
- int (*list_getter) __P((struct _list_of_items *)); /* function to call to get the list */
-
- STRINGLIST *slist;
-
- /* These may or may not be used. */
- STRINGLIST *genlist; /* for handing to the completion code one item at a time */
- int genindex; /* index of item last handed to completion code */
-
-} ITEMLIST;
-
-/* Values for ITEMLIST -> flags */
-#define LIST_DYNAMIC 0x001
-#define LIST_DIRTY 0x002
-#define LIST_INITIALIZED 0x004
-#define LIST_MUSTSORT 0x008
-#define LIST_DONTFREE 0x010
-#define LIST_DONTFREEMEMBERS 0x020
-
-#define EMPTYCMD "_EmptycmD_"
-#define DEFAULTCMD "_DefaultCmD_"
-
-extern HASH_TABLE *prog_completes;
-extern int prog_completion_enabled;
-
-/* Not all of these are used yet. */
-extern ITEMLIST it_aliases;
-extern ITEMLIST it_arrayvars;
-extern ITEMLIST it_bindings;
-extern ITEMLIST it_builtins;
-extern ITEMLIST it_commands;
-extern ITEMLIST it_directories;
-extern ITEMLIST it_disabled;
-extern ITEMLIST it_enabled;
-extern ITEMLIST it_exports;
-extern ITEMLIST it_files;
-extern ITEMLIST it_functions;
-extern ITEMLIST it_groups;
-extern ITEMLIST it_helptopics;
-extern ITEMLIST it_hostnames;
-extern ITEMLIST it_jobs;
-extern ITEMLIST it_keywords;
-extern ITEMLIST it_running;
-extern ITEMLIST it_services;
-extern ITEMLIST it_setopts;
-extern ITEMLIST it_shopts;
-extern ITEMLIST it_signals;
-extern ITEMLIST it_stopped;
-extern ITEMLIST it_users;
-extern ITEMLIST it_variables;
-
-extern COMPSPEC *pcomp_curcs;
-extern const char *pcomp_curcmd;
-
-/* Functions from pcomplib.c */
-extern COMPSPEC *compspec_create __P((void));
-extern void compspec_dispose __P((COMPSPEC *));
-extern COMPSPEC *compspec_copy __P((COMPSPEC *));
-
-extern void progcomp_create __P((void));
-extern void progcomp_flush __P((void));
-extern void progcomp_dispose __P((void));
-
-extern int progcomp_size __P((void));
-
-extern int progcomp_insert __P((char *, COMPSPEC *));
-extern int progcomp_remove __P((char *));
-
-extern COMPSPEC *progcomp_search __P((const char *));
-
-extern void progcomp_walk __P((hash_wfunc *));
-
-/* Functions from pcomplete.c */
-extern void set_itemlist_dirty __P((ITEMLIST *));
-
-extern STRINGLIST *completions_to_stringlist __P((char **));
-
-extern STRINGLIST *gen_compspec_completions __P((COMPSPEC *, const char *, const char *, int, int, int *));
-extern char **programmable_completions __P((const char *, const char *, int, int, int *));
-
-extern void pcomp_set_readline_variables __P((int, int));
-extern void pcomp_set_compspec_options __P((COMPSPEC *, int, int));
-#endif /* _PCOMPLETE_H_ */
+++ /dev/null
-/* shell.c -- GNU's idea of the POSIX shell specification. */
-
-/* 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 <http://www.gnu.org/licenses/>.
-*/
-
-/*
- Birthdate:
- Sunday, January 10th, 1988.
- Initial author: Brian Fox
-*/
-#define INSTALL_DEBUG_MODE
-
-#include "config.h"
-
-#include "bashtypes.h"
-#if !defined (_MINIX) && defined (HAVE_SYS_FILE_H)
-# include <sys/file.h>
-#endif
-#include "posixstat.h"
-#include "posixtime.h"
-#include "bashansi.h"
-#include <stdio.h>
-#include <signal.h>
-#include <errno.h>
-#include "filecntl.h"
-#include <pwd.h>
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
-
-#include "bashintl.h"
-
-#define NEED_SH_SETLINEBUF_DECL /* used in externs.h */
-
-#include "shell.h"
-#include "flags.h"
-#include "trap.h"
-#include "mailcheck.h"
-#include "builtins.h"
-#include "builtins/common.h"
-
-#if defined (JOB_CONTROL)
-#include "jobs.h"
-#endif /* JOB_CONTROL */
-
-#include "input.h"
-#include "execute_cmd.h"
-#include "findcmd.h"
-
-#if defined (USING_BASH_MALLOC) && defined (DEBUG) && !defined (DISABLE_MALLOC_WRAPPERS)
-# include <malloc/shmalloc.h>
-#endif
-
-#if defined (HISTORY)
-# include "bashhist.h"
-# include <readline/history.h>
-#endif
-
-#if defined (READLINE)
-# include <readline/readline.h>
-# include "bashline.h"
-#endif
-
-#include <tilde/tilde.h>
-#include <glob/strmatch.h>
-
-#if defined (__OPENNT)
-# include <opennt/opennt.h>
-#endif
-
-#if !defined (HAVE_GETPW_DECLS)
-extern struct passwd *getpwuid ();
-#endif /* !HAVE_GETPW_DECLS */
-
-#if !defined (errno)
-extern int errno;
-#endif
-
-#if defined (NO_MAIN_ENV_ARG)
-extern char **environ; /* used if no third argument to main() */
-#endif
-
-extern char *dist_version, *release_status;
-extern int patch_level, build_version;
-extern int shell_level;
-extern int subshell_environment;
-extern int running_in_background;
-extern int last_command_exit_value;
-extern int line_number;
-extern int expand_aliases;
-extern int array_needs_making;
-extern int gnu_error_format;
-extern char *primary_prompt, *secondary_prompt;
-extern char *this_command_name;
-
-/* Non-zero means that this shell has already been run; i.e. you should
- call shell_reinitialize () if you need to start afresh. */
-int shell_initialized = 0;
-
-COMMAND *global_command = (COMMAND *)NULL;
-
-/* Information about the current user. */
-struct user_info current_user =
-{
- (uid_t)-1, (uid_t)-1, (gid_t)-1, (gid_t)-1,
- (char *)NULL, (char *)NULL, (char *)NULL
-};
-
-/* The current host's name. */
-char *current_host_name = (char *)NULL;
-
-/* Non-zero means that this shell is a login shell.
- Specifically:
- 0 = not login shell.
- 1 = login shell from getty (or equivalent fake out)
- -1 = login shell from "--login" (or -l) flag.
- -2 = both from getty, and from flag.
- */
-int login_shell = 0;
-
-/* Non-zero means that at this moment, the shell is interactive. In
- general, this means that the shell is at this moment reading input
- from the keyboard. */
-int interactive = 0;
-
-/* Non-zero means that the shell was started as an interactive shell. */
-int interactive_shell = 0;
-
-/* Non-zero means to send a SIGHUP to all jobs when an interactive login
- shell exits. */
-int hup_on_exit = 0;
-
-/* Non-zero means to list status of running and stopped jobs at shell exit */
-int check_jobs_at_exit = 0;
-
-/* Non-zero means to change to a directory name supplied as a command name */
-int autocd = 0;
-
-/* Tells what state the shell was in when it started:
- 0 = non-interactive shell script
- 1 = interactive
- 2 = -c command
- 3 = wordexp evaluation
- This is a superset of the information provided by interactive_shell.
-*/
-int startup_state = 0;
-
-/* Special debugging helper. */
-int debugging_login_shell = 0;
-
-/* The environment that the shell passes to other commands. */
-char **shell_environment;
-
-/* Non-zero when we are executing a top-level command. */
-int executing = 0;
-
-/* The number of commands executed so far. */
-int current_command_number = 1;
-
-/* Non-zero is the recursion depth for commands. */
-int indirection_level = 0;
-
-/* The name of this shell, as taken from argv[0]. */
-char *shell_name = (char *)NULL;
-
-/* time in seconds when the shell was started */
-time_t shell_start_time;
-
-/* Are we running in an emacs shell window? */
-int running_under_emacs;
-
-/* Do we have /dev/fd? */
-#ifdef HAVE_DEV_FD
-int have_devfd = HAVE_DEV_FD;
-#else
-int have_devfd = 0;
-#endif
-
-/* The name of the .(shell)rc file. */
-static char *bashrc_file = DEFAULT_BASHRC;
-
-/* Non-zero means to act more like the Bourne shell on startup. */
-static int act_like_sh;
-
-/* Non-zero if this shell is being run by `su'. */
-static int su_shell;
-
-/* Non-zero if we have already expanded and sourced $ENV. */
-static int sourced_env;
-
-/* Is this shell running setuid? */
-static int running_setuid;
-
-/* Values for the long-winded argument names. */
-static int debugging; /* Do debugging things. */
-static int no_rc; /* Don't execute ~/.bashrc */
-static int no_profile; /* Don't execute .profile */
-static int do_version; /* Display interesting version info. */
-static int make_login_shell; /* Make this shell be a `-bash' shell. */
-static int want_initial_help; /* --help option */
-
-int debugging_mode = 0; /* In debugging mode with --debugger */
-#if defined (READLINE)
-int no_line_editing = 0; /* non-zero -> don't do fancy line editing. */
-#else
-int no_line_editing = 1; /* can't have line editing without readline */
-#endif
-int dump_translatable_strings; /* Dump strings in $"...", don't execute. */
-int dump_po_strings; /* Dump strings in $"..." in po format */
-int wordexp_only = 0; /* Do word expansion only */
-int protected_mode = 0; /* No command substitution with --wordexp */
-
-#if defined (STRICT_POSIX)
-int posixly_correct = 1; /* Non-zero means posix.2 superset. */
-#else
-int posixly_correct = 0; /* Non-zero means posix.2 superset. */
-#endif
-
-/* Some long-winded argument names. These are obviously new. */
-#define Int 1
-#define Charp 2
-static const struct {
- const char *name;
- int type;
- int *int_value;
- char **char_value;
-} long_args[] = {
- { "debug", Int, &debugging, (char **)0x0 },
-#if defined (DEBUGGER)
- { "debugger", Int, &debugging_mode, (char **)0x0 },
-#endif
- { "dump-po-strings", Int, &dump_po_strings, (char **)0x0 },
- { "dump-strings", Int, &dump_translatable_strings, (char **)0x0 },
- { "help", Int, &want_initial_help, (char **)0x0 },
- { "init-file", Charp, (int *)0x0, &bashrc_file },
- { "login", Int, &make_login_shell, (char **)0x0 },
- { "noediting", Int, &no_line_editing, (char **)0x0 },
- { "noprofile", Int, &no_profile, (char **)0x0 },
- { "norc", Int, &no_rc, (char **)0x0 },
- { "posix", Int, &posixly_correct, (char **)0x0 },
-#if defined (WORDEXP_OPTION)
- { "protected", Int, &protected_mode, (char **)0x0 },
-#endif
- { "rcfile", Charp, (int *)0x0, &bashrc_file },
-#if defined (RESTRICTED_SHELL)
- { "restricted", Int, &restricted, (char **)0x0 },
-#endif
- { "verbose", Int, &echo_input_at_read, (char **)0x0 },
- { "version", Int, &do_version, (char **)0x0 },
-#if defined (WORDEXP_OPTION)
- { "wordexp", Int, &wordexp_only, (char **)0x0 },
-#endif
- { (char *)0x0, Int, (int *)0x0, (char **)0x0 }
-};
-
-/* These are extern so execute_simple_command can set them, and then
- longjmp back to main to execute a shell script, instead of calling
- main () again and resulting in indefinite, possibly fatal, stack
- growth. */
-procenv_t subshell_top_level;
-int subshell_argc;
-char **subshell_argv;
-char **subshell_envp;
-
-char *exec_argv0;
-
-#if defined (BUFFERED_INPUT)
-/* The file descriptor from which the shell is reading input. */
-int default_buffered_input = -1;
-#endif
-
-/* The following two variables are not static so they can show up in $-. */
-int read_from_stdin; /* -s flag supplied */
-int want_pending_command; /* -c flag supplied */
-
-/* This variable is not static so it can be bound to $BASH_EXECUTION_STRING */
-char *command_execution_string; /* argument to -c option */
-
-int malloc_trace_at_exit = 0;
-
-static int shell_reinitialized = 0;
-
-static FILE *default_input;
-
-static STRING_INT_ALIST *shopt_alist;
-static int shopt_ind = 0, shopt_len = 0;
-
-static int parse_long_options __P((char **, int, int));
-static int parse_shell_options __P((char **, int, int));
-static int bind_args __P((char **, int, int, int));
-
-static void start_debugger __P((void));
-
-static void add_shopt_to_alist __P((char *, int));
-static void run_shopt_alist __P((void));
-
-static void execute_env_file __P((char *));
-static void run_startup_files __P((void));
-static int open_shell_script __P((char *));
-static void set_bash_input __P((void));
-static int run_one_command __P((char *));
-#if defined (WORDEXP_OPTION)
-static int run_wordexp __P((char *));
-#endif
-
-static int uidget __P((void));
-
-static void init_interactive __P((void));
-static void init_noninteractive __P((void));
-static void init_interactive_script __P((void));
-
-static void set_shell_name __P((char *));
-static void shell_initialize __P((void));
-static void shell_reinitialize __P((void));
-
-static void show_shell_usage __P((FILE *, int));
-
-#ifdef __CYGWIN__
-static void
-_cygwin32_check_tmp ()
-{
- struct stat sb;
-
- if (stat ("/tmp", &sb) < 0)
- internal_warning (_("could not find /tmp, please create!"));
- else
- {
- if (S_ISDIR (sb.st_mode) == 0)
- internal_warning (_("/tmp must be a valid directory name"));
- }
-}
-#endif /* __CYGWIN__ */
-
-#if defined (NO_MAIN_ENV_ARG)
-/* systems without third argument to main() */
-int
-main (argc, argv)
- int argc;
- char **argv;
-#else /* !NO_MAIN_ENV_ARG */
-int
-main (argc, argv, env)
- int argc;
- char **argv, **env;
-#endif /* !NO_MAIN_ENV_ARG */
-{
- register int i;
- int code, old_errexit_flag;
-#if defined (RESTRICTED_SHELL)
- int saverst;
-#endif
- volatile int locally_skip_execution;
- volatile int arg_index, top_level_arg_index;
-#ifdef __OPENNT
- char **env;
-
- env = environ;
-#endif /* __OPENNT */
-
- USE_VAR(argc);
- USE_VAR(argv);
- USE_VAR(env);
- USE_VAR(code);
- USE_VAR(old_errexit_flag);
-#if defined (RESTRICTED_SHELL)
- USE_VAR(saverst);
-#endif
-
- /* Catch early SIGINTs. */
- code = setjmp_nosigs (top_level);
- if (code)
- exit (2);
-
- xtrace_init ();
-
-#if defined (USING_BASH_MALLOC) && defined (DEBUG) && !defined (DISABLE_MALLOC_WRAPPERS)
-# if 1
- malloc_set_register (1);
-# endif
-#endif
-
- check_dev_tty ();
-
-#ifdef __CYGWIN__
- _cygwin32_check_tmp ();
-#endif /* __CYGWIN__ */
-
- /* Wait forever if we are debugging a login shell. */
- while (debugging_login_shell) sleep (3);
-
- set_default_locale ();
-
- running_setuid = uidget ();
-
- if (getenv ("POSIXLY_CORRECT") || getenv ("POSIX_PEDANTIC"))
- posixly_correct = 1;
-
-#if defined (USE_GNU_MALLOC_LIBRARY)
- mcheck (programming_error, (void (*) ())0);
-#endif /* USE_GNU_MALLOC_LIBRARY */
-
- if (setjmp_sigs (subshell_top_level))
- {
- argc = subshell_argc;
- argv = subshell_argv;
- env = subshell_envp;
- sourced_env = 0;
- }
-
- shell_reinitialized = 0;
-
- /* Initialize `local' variables for all `invocations' of main (). */
- arg_index = 1;
- if (arg_index > argc)
- arg_index = argc;
- command_execution_string = (char *)NULL;
- want_pending_command = locally_skip_execution = read_from_stdin = 0;
- default_input = stdin;
-#if defined (BUFFERED_INPUT)
- default_buffered_input = -1;
-#endif
-
- /* Fix for the `infinite process creation' bug when running shell scripts
- from startup files on System V. */
- login_shell = make_login_shell = 0;
-
- /* If this shell has already been run, then reinitialize it to a
- vanilla state. */
- if (shell_initialized || shell_name)
- {
- /* Make sure that we do not infinitely recurse as a login shell. */
- if (*shell_name == '-')
- shell_name++;
-
- shell_reinitialize ();
- if (setjmp_nosigs (top_level))
- exit (2);
- }
-
- shell_environment = env;
- set_shell_name (argv[0]);
- shell_start_time = NOW; /* NOW now defined in general.h */
-
- /* Parse argument flags from the input line. */
-
- /* Find full word arguments first. */
- arg_index = parse_long_options (argv, arg_index, argc);
-
- if (want_initial_help)
- {
- show_shell_usage (stdout, 1);
- exit (EXECUTION_SUCCESS);
- }
-
- if (do_version)
- {
- show_shell_version (1);
- exit (EXECUTION_SUCCESS);
- }
-
- /* All done with full word options; do standard shell option parsing.*/
- this_command_name = shell_name; /* for error reporting */
- arg_index = parse_shell_options (argv, arg_index, argc);
-
- /* If user supplied the "--login" (or -l) flag, then set and invert
- LOGIN_SHELL. */
- if (make_login_shell)
- {
- login_shell++;
- login_shell = -login_shell;
- }
-
- set_login_shell ("login_shell", login_shell != 0);
-
- if (dump_po_strings)
- dump_translatable_strings = 1;
-
- if (dump_translatable_strings)
- read_but_dont_execute = 1;
-
- if (running_setuid && privileged_mode == 0)
- disable_priv_mode ();
-
- /* Need to get the argument to a -c option processed in the
- above loop. The next arg is a command to execute, and the
- following args are $0...$n respectively. */
- if (want_pending_command)
- {
- command_execution_string = argv[arg_index];
- if (command_execution_string == 0)
- {
- report_error (_("%s: option requires an argument"), "-c");
- exit (EX_BADUSAGE);
- }
- arg_index++;
- }
- this_command_name = (char *)NULL;
-
- cmd_init(); /* initialize the command object caches */
-
- /* First, let the outside world know about our interactive status.
- A shell is interactive if the `-i' flag was given, or if all of
- the following conditions are met:
- no -c command
- no arguments remaining or the -s flag given
- standard input is a terminal
- standard error is a terminal
- Refer to Posix.2, the description of the `sh' utility. */
-
- if (forced_interactive || /* -i flag */
- (!command_execution_string && /* No -c command and ... */
- wordexp_only == 0 && /* No --wordexp and ... */
- ((arg_index == argc) || /* no remaining args or... */
- read_from_stdin) && /* -s flag with args, and */
- isatty (fileno (stdin)) && /* Input is a terminal and */
- isatty (fileno (stderr)))) /* error output is a terminal. */
- init_interactive ();
- else
- init_noninteractive ();
-
- /*
- * Some systems have the bad habit of starting login shells with lots of open
- * file descriptors. For instance, most systems that have picked up the
- * pre-4.0 Sun YP code leave a file descriptor open each time you call one
- * of the getpw* functions, and it's set to be open across execs. That
- * means one for login, one for xterm, one for shelltool, etc. There are
- * also systems that open persistent FDs to other agents or files as part
- * of process startup; these need to be set to be close-on-exec.
- */
- if (login_shell && interactive_shell)
- {
- for (i = 3; i < 20; i++)
- SET_CLOSE_ON_EXEC (i);
- }
-
- /* If we're in a strict Posix.2 mode, turn on interactive comments,
- alias expansion in non-interactive shells, and other Posix.2 things. */
- if (posixly_correct)
- {
- bind_variable ("POSIXLY_CORRECT", "y", 0);
- sv_strict_posix ("POSIXLY_CORRECT");
- }
-
- /* Now we run the shopt_alist and process the options. */
- if (shopt_alist)
- run_shopt_alist ();
-
- /* From here on in, the shell must be a normal functioning shell.
- Variables from the environment are expected to be set, etc. */
- shell_initialize ();
-
- set_default_lang ();
- set_default_locale_vars ();
-
- /*
- * M-x term -> TERM=eterm EMACS=22.1 (term:0.96) (eterm)
- * M-x shell -> TERM=dumb EMACS=t (no line editing)
- * M-x terminal -> TERM=emacs-em7955 EMACS= (line editing)
- */
- if (interactive_shell)
- {
- char *term, *emacs;
-
- term = get_string_value ("TERM");
- emacs = get_string_value ("EMACS");
-
- /* Not sure any emacs terminal emulator sets TERM=emacs any more */
- no_line_editing |= term && (STREQ (term, "emacs"));
- no_line_editing |= emacs && emacs[0] == 't' && emacs[1] == '\0' && STREQ (term, "dumb");
-
- /* running_under_emacs == 2 for `eterm' */
- running_under_emacs = (emacs != 0) || (term && STREQN (term, "emacs", 5));
- running_under_emacs += term && STREQN (term, "eterm", 5) && emacs && strstr (emacs, "term");
-
- if (running_under_emacs)
- gnu_error_format = 1;
- }
-
- top_level_arg_index = arg_index;
- old_errexit_flag = exit_immediately_on_error;
-
- /* Give this shell a place to longjmp to before executing the
- startup files. This allows users to press C-c to abort the
- lengthy startup. */
- code = setjmp_sigs (top_level);
- if (code)
- {
- if (code == EXITPROG || code == ERREXIT)
- exit_shell (last_command_exit_value);
- else
- {
-#if defined (JOB_CONTROL)
- /* Reset job control, since run_startup_files turned it off. */
- set_job_control (interactive_shell);
-#endif
- /* Reset value of `set -e', since it's turned off before running
- the startup files. */
- exit_immediately_on_error += old_errexit_flag;
- locally_skip_execution++;
- }
- }
-
- arg_index = top_level_arg_index;
-
- /* Execute the start-up scripts. */
-
- if (interactive_shell == 0)
- {
- unbind_variable ("PS1");
- unbind_variable ("PS2");
- interactive = 0;
-#if 0
- /* This has already been done by init_noninteractive */
- expand_aliases = posixly_correct;
-#endif
- }
- else
- {
- change_flag ('i', FLAG_ON);
- interactive = 1;
- }
-
-#if defined (RESTRICTED_SHELL)
- /* Set restricted_shell based on whether the basename of $0 indicates that
- the shell should be restricted or if the `-r' option was supplied at
- startup. */
- restricted_shell = shell_is_restricted (shell_name);
-
- /* If the `-r' option is supplied at invocation, make sure that the shell
- is not in restricted mode when running the startup files. */
- saverst = restricted;
- restricted = 0;
-#endif
-
- /* The startup files are run with `set -e' temporarily disabled. */
- if (locally_skip_execution == 0 && running_setuid == 0)
- {
- old_errexit_flag = exit_immediately_on_error;
- exit_immediately_on_error = 0;
-
- run_startup_files ();
- exit_immediately_on_error += old_errexit_flag;
- }
-
- /* If we are invoked as `sh', turn on Posix mode. */
- if (act_like_sh)
- {
- bind_variable ("POSIXLY_CORRECT", "y", 0);
- sv_strict_posix ("POSIXLY_CORRECT");
- }
-
-#if defined (RESTRICTED_SHELL)
- /* Turn on the restrictions after executing the startup files. This
- means that `bash -r' or `set -r' invoked from a startup file will
- turn on the restrictions after the startup files are executed. */
- restricted = saverst || restricted;
- if (shell_reinitialized == 0)
- maybe_make_restricted (shell_name);
-#endif /* RESTRICTED_SHELL */
-
-#if defined (WORDEXP_OPTION)
- if (wordexp_only)
- {
- startup_state = 3;
- last_command_exit_value = run_wordexp (argv[arg_index]);
- exit_shell (last_command_exit_value);
- }
-#endif
-
- if (command_execution_string)
- {
- arg_index = bind_args (argv, arg_index, argc, 0);
- startup_state = 2;
-
- if (debugging_mode)
- start_debugger ();
-
-#if defined (ONESHOT)
- executing = 1;
- run_one_command (command_execution_string);
- exit_shell (last_command_exit_value);
-#else /* ONESHOT */
- with_input_from_string (command_execution_string, "-c");
- goto read_and_execute;
-#endif /* !ONESHOT */
- }
-
- /* Get possible input filename and set up default_buffered_input or
- default_input as appropriate. */
- if (arg_index != argc && read_from_stdin == 0)
- {
- open_shell_script (argv[arg_index]);
- arg_index++;
- }
- else if (interactive == 0)
- /* In this mode, bash is reading a script from stdin, which is a
- pipe or redirected file. */
-#if defined (BUFFERED_INPUT)
- default_buffered_input = fileno (stdin); /* == 0 */
-#else
- setbuf (default_input, (char *)NULL);
-#endif /* !BUFFERED_INPUT */
-
- set_bash_input ();
-
- /* Bind remaining args to $1 ... $n */
- arg_index = bind_args (argv, arg_index, argc, 1);
-
- if (debugging_mode && locally_skip_execution == 0 && running_setuid == 0 && (dollar_vars[1] || interactive_shell == 0))
- start_debugger ();
-
- /* Do the things that should be done only for interactive shells. */
- if (interactive_shell)
- {
- /* Set up for checking for presence of mail. */
- reset_mail_timer ();
- init_mail_dates ();
-
-#if defined (HISTORY)
- /* Initialize the interactive history stuff. */
- bash_initialize_history ();
- /* Don't load the history from the history file if we've already
- saved some lines in this session (e.g., by putting `history -s xx'
- into one of the startup files). */
- if (shell_initialized == 0 && history_lines_this_session == 0)
- load_history ();
-#endif /* HISTORY */
-
- /* Initialize terminal state for interactive shells after the
- .bash_profile and .bashrc are interpreted. */
- get_tty_state ();
- }
-
-#if !defined (ONESHOT)
- read_and_execute:
-#endif /* !ONESHOT */
-
- shell_initialized = 1;
-
- /* Read commands until exit condition. */
- reader_loop ();
- exit_shell (last_command_exit_value);
-}
-
-static int
-parse_long_options (argv, arg_start, arg_end)
- char **argv;
- int arg_start, arg_end;
-{
- int arg_index, longarg, i;
- char *arg_string;
-
- arg_index = arg_start;
- while ((arg_index != arg_end) && (arg_string = argv[arg_index]) &&
- (*arg_string == '-'))
- {
- longarg = 0;
-
- /* Make --login equivalent to -login. */
- if (arg_string[1] == '-' && arg_string[2])
- {
- longarg = 1;
- arg_string++;
- }
-
- for (i = 0; long_args[i].name; i++)
- {
- if (STREQ (arg_string + 1, long_args[i].name))
- {
- if (long_args[i].type == Int)
- *long_args[i].int_value = 1;
- else if (argv[++arg_index] == 0)
- {
- report_error (_("%s: option requires an argument"), long_args[i].name);
- exit (EX_BADUSAGE);
- }
- else
- *long_args[i].char_value = argv[arg_index];
-
- break;
- }
- }
- if (long_args[i].name == 0)
- {
- if (longarg)
- {
- report_error (_("%s: invalid option"), argv[arg_index]);
- show_shell_usage (stderr, 0);
- exit (EX_BADUSAGE);
- }
- break; /* No such argument. Maybe flag arg. */
- }
-
- arg_index++;
- }
-
- return (arg_index);
-}
-
-static int
-parse_shell_options (argv, arg_start, arg_end)
- char **argv;
- int arg_start, arg_end;
-{
- int arg_index;
- int arg_character, on_or_off, next_arg, i;
- char *o_option, *arg_string;
-
- arg_index = arg_start;
- while (arg_index != arg_end && (arg_string = argv[arg_index]) &&
- (*arg_string == '-' || *arg_string == '+'))
- {
- /* There are flag arguments, so parse them. */
- next_arg = arg_index + 1;
-
- /* A single `-' signals the end of options. From the 4.3 BSD sh.
- An option `--' means the same thing; this is the standard
- getopt(3) meaning. */
- if (arg_string[0] == '-' &&
- (arg_string[1] == '\0' ||
- (arg_string[1] == '-' && arg_string[2] == '\0')))
- return (next_arg);
-
- i = 1;
- on_or_off = arg_string[0];
- while (arg_character = arg_string[i++])
- {
- switch (arg_character)
- {
- case 'c':
- want_pending_command = 1;
- break;
-
- case 'l':
- make_login_shell = 1;
- break;
-
- case 's':
- read_from_stdin = 1;
- break;
-
- case 'o':
- o_option = argv[next_arg];
- if (o_option == 0)
- {
- list_minus_o_opts (-1, (on_or_off == '-') ? 0 : 1);
- break;
- }
- if (set_minus_o_option (on_or_off, o_option) != EXECUTION_SUCCESS)
- exit (EX_BADUSAGE);
- next_arg++;
- break;
-
- case 'O':
- /* Since some of these can be overridden by the normal
- interactive/non-interactive shell initialization or
- initializing posix mode, we save the options and process
- them after initialization. */
- o_option = argv[next_arg];
- if (o_option == 0)
- {
- shopt_listopt (o_option, (on_or_off == '-') ? 0 : 1);
- break;
- }
- add_shopt_to_alist (o_option, on_or_off);
- next_arg++;
- break;
-
- case 'D':
- dump_translatable_strings = 1;
- break;
-
- default:
- if (change_flag (arg_character, on_or_off) == FLAG_ERROR)
- {
- report_error (_("%c%c: invalid option"), on_or_off, arg_character);
- show_shell_usage (stderr, 0);
- exit (EX_BADUSAGE);
- }
- }
- }
- /* Can't do just a simple increment anymore -- what about
- "bash -abouo emacs ignoreeof -hP"? */
- arg_index = next_arg;
- }
-
- return (arg_index);
-}
-
-/* Exit the shell with status S. */
-void
-exit_shell (s)
- int s;
-{
- fflush (stdout); /* XXX */
- fflush (stderr);
-
- /* Clean up the terminal if we are in a state where it's been modified. */
-#if defined (READLINE)
- if (RL_ISSTATE (RL_STATE_TERMPREPPED) && rl_deprep_term_function)
- (*rl_deprep_term_function) ();
-#endif
- if (read_tty_modified ())
- read_tty_cleanup ();
-
- /* Do trap[0] if defined. Allow it to override the exit status
- passed to us. */
- if (signal_is_trapped (0))
- s = run_exit_trap ();
-
-#if defined (PROCESS_SUBSTITUTION)
- unlink_fifo_list ();
-#endif /* PROCESS_SUBSTITUTION */
-
-#if defined (HISTORY)
- if (remember_on_history)
- maybe_save_shell_history ();
-#endif /* HISTORY */
-
-#if defined (COPROCESS_SUPPORT)
- coproc_flush ();
-#endif
-
-#if defined (JOB_CONTROL)
- /* If the user has run `shopt -s huponexit', hangup all jobs when we exit
- an interactive login shell. ksh does this unconditionally. */
- if (interactive_shell && login_shell && hup_on_exit)
- hangup_all_jobs ();
-
- /* If this shell is interactive, or job control is active, terminate all
- stopped jobs and restore the original terminal process group. Don't do
- this if we're in a subshell and calling exit_shell after, for example,
- a failed word expansion. We want to do this even if the shell is not
- interactive because we set the terminal's process group when job control
- is enabled regardless of the interactive status. */
- if (subshell_environment == 0)
- end_job_control ();
-#endif /* JOB_CONTROL */
-
- /* Always return the exit status of the last command to our parent. */
- sh_exit (s);
-}
-
-/* A wrapper for exit that (optionally) can do other things, like malloc
- statistics tracing. */
-void
-sh_exit (s)
- int s;
-{
-#if defined (MALLOC_DEBUG) && defined (USING_BASH_MALLOC)
- if (malloc_trace_at_exit)
- trace_malloc_stats (get_name_for_error (), (char *)NULL);
-#endif
-
- exit (s);
-}
-
-/* Exit a subshell, which includes calling the exit trap. We don't want to
- do any more cleanup, since a subshell is created as an exact copy of its
- parent. */
-void
-subshell_exit (s)
- int s;
-{
- fflush (stdout);
- fflush (stderr);
-
- /* Do trap[0] if defined. Allow it to override the exit status
- passed to us. */
- if (signal_is_trapped (0))
- s = run_exit_trap ();
-
- sh_exit (s);
-}
-
-/* Source the bash startup files. If POSIXLY_CORRECT is non-zero, we obey
- the Posix.2 startup file rules: $ENV is expanded, and if the file it
- names exists, that file is sourced. The Posix.2 rules are in effect
- for interactive shells only. (section 4.56.5.3) */
-
-/* Execute ~/.bashrc for most shells. Never execute it if
- ACT_LIKE_SH is set, or if NO_RC is set.
-
- If the executable file "/usr/gnu/src/bash/foo" contains:
-
- #!/usr/gnu/bin/bash
- echo hello
-
- then:
-
- COMMAND EXECUTE BASHRC
- --------------------------------
- bash -c foo NO
- bash foo NO
- foo NO
- rsh machine ls YES (for rsh, which calls `bash -c')
- rsh machine foo YES (for shell started by rsh) NO (for foo!)
- echo ls | bash NO
- login NO
- bash YES
-*/
-
-static void
-execute_env_file (env_file)
- char *env_file;
-{
- char *fn;
-
- if (env_file && *env_file)
- {
- fn = expand_string_unsplit_to_string (env_file, Q_DOUBLE_QUOTES);
- if (fn && *fn)
- maybe_execute_file (fn, 1);
- FREE (fn);
- }
-}
-
-static void
-run_startup_files ()
-{
-#if defined (JOB_CONTROL)
- int old_job_control;
-#endif
- int sourced_login, run_by_ssh;
-
- /* get the rshd/sshd case out of the way first. */
- if (interactive_shell == 0 && no_rc == 0 && login_shell == 0 &&
- act_like_sh == 0 && command_execution_string)
- {
-#ifdef SSH_SOURCE_BASHRC
- run_by_ssh = (find_variable ("SSH_CLIENT") != (SHELL_VAR *)0) ||
- (find_variable ("SSH2_CLIENT") != (SHELL_VAR *)0);
-#else
- run_by_ssh = 0;
-#endif
-
- /* If we were run by sshd or we think we were run by rshd, execute
- ~/.bashrc if we are a top-level shell. */
- if ((run_by_ssh || isnetconn (fileno (stdin))) && shell_level < 2)
- {
-#ifdef SYS_BASHRC
-# if defined (__OPENNT)
- maybe_execute_file (_prefixInstallPath(SYS_BASHRC, NULL, 0), 1);
-# else
- maybe_execute_file (SYS_BASHRC, 1);
-# endif
-#endif
- maybe_execute_file (bashrc_file, 1);
- return;
- }
- }
-
-#if defined (JOB_CONTROL)
- /* Startup files should be run without job control enabled. */
- old_job_control = interactive_shell ? set_job_control (0) : 0;
-#endif
-
- sourced_login = 0;
-
- /* A shell begun with the --login (or -l) flag that is not in posix mode
- runs the login shell startup files, no matter whether or not it is
- interactive. If NON_INTERACTIVE_LOGIN_SHELLS is defined, run the
- startup files if argv[0][0] == '-' as well. */
-#if defined (NON_INTERACTIVE_LOGIN_SHELLS)
- if (login_shell && posixly_correct == 0)
-#else
- if (login_shell < 0 && posixly_correct == 0)
-#endif
- {
- /* We don't execute .bashrc for login shells. */
- no_rc++;
-
- /* Execute /etc/profile and one of the personal login shell
- initialization files. */
- if (no_profile == 0)
- {
- maybe_execute_file (SYS_PROFILE, 1);
-
- if (act_like_sh) /* sh */
- maybe_execute_file ("~/.profile", 1);
- else if ((maybe_execute_file ("~/.bash_profile", 1) == 0) &&
- (maybe_execute_file ("~/.bash_login", 1) == 0)) /* bash */
- maybe_execute_file ("~/.profile", 1);
- }
-
- sourced_login = 1;
- }
-
- /* A non-interactive shell not named `sh' and not in posix mode reads and
- executes commands from $BASH_ENV. If `su' starts a shell with `-c cmd'
- and `-su' as the name of the shell, we want to read the startup files.
- No other non-interactive shells read any startup files. */
- if (interactive_shell == 0 && !(su_shell && login_shell))
- {
- if (posixly_correct == 0 && act_like_sh == 0 && privileged_mode == 0 &&
- sourced_env++ == 0)
- execute_env_file (get_string_value ("BASH_ENV"));
- return;
- }
-
- /* Interactive shell or `-su' shell. */
- if (posixly_correct == 0) /* bash, sh */
- {
- if (login_shell && sourced_login++ == 0)
- {
- /* We don't execute .bashrc for login shells. */
- no_rc++;
-
- /* Execute /etc/profile and one of the personal login shell
- initialization files. */
- if (no_profile == 0)
- {
- maybe_execute_file (SYS_PROFILE, 1);
-
- if (act_like_sh) /* sh */
- maybe_execute_file ("~/.profile", 1);
- else if ((maybe_execute_file ("~/.bash_profile", 1) == 0) &&
- (maybe_execute_file ("~/.bash_login", 1) == 0)) /* bash */
- maybe_execute_file ("~/.profile", 1);
- }
- }
-
- /* bash */
- if (act_like_sh == 0 && no_rc == 0)
- {
-#ifdef SYS_BASHRC
-# if defined (__OPENNT)
- maybe_execute_file (_prefixInstallPath(SYS_BASHRC, NULL, 0), 1);
-# else
- maybe_execute_file (SYS_BASHRC, 1);
-# endif
-#endif
- maybe_execute_file (bashrc_file, 1);
- }
- /* sh */
- else if (act_like_sh && privileged_mode == 0 && sourced_env++ == 0)
- execute_env_file (get_string_value ("ENV"));
- }
- else /* bash --posix, sh --posix */
- {
- /* bash and sh */
- if (interactive_shell && privileged_mode == 0 && sourced_env++ == 0)
- execute_env_file (get_string_value ("ENV"));
- }
-
-#if defined (JOB_CONTROL)
- set_job_control (old_job_control);
-#endif
-}
-
-#if defined (RESTRICTED_SHELL)
-/* Return 1 if the shell should be a restricted one based on NAME or the
- value of `restricted'. Don't actually do anything, just return a
- boolean value. */
-int
-shell_is_restricted (name)
- char *name;
-{
- char *temp;
-
- if (restricted)
- return 1;
- temp = base_pathname (name);
- if (*temp == '-')
- temp++;
- return (STREQ (temp, RESTRICTED_SHELL_NAME));
-}
-
-/* Perhaps make this shell a `restricted' one, based on NAME. If the
- basename of NAME is "rbash", then this shell is restricted. The
- name of the restricted shell is a configurable option, see config.h.
- In a restricted shell, PATH, SHELL, ENV, and BASH_ENV are read-only
- and non-unsettable.
- Do this also if `restricted' is already set to 1; maybe the shell was
- started with -r. */
-int
-maybe_make_restricted (name)
- char *name;
-{
- char *temp;
-
- temp = base_pathname (name);
- if (*temp == '-')
- temp++;
- if (restricted || (STREQ (temp, RESTRICTED_SHELL_NAME)))
- {
- set_var_read_only ("PATH");
- set_var_read_only ("SHELL");
- set_var_read_only ("ENV");
- set_var_read_only ("BASH_ENV");
- restricted = 1;
- }
- return (restricted);
-}
-#endif /* RESTRICTED_SHELL */
-
-/* Fetch the current set of uids and gids and return 1 if we're running
- setuid or setgid. */
-static int
-uidget ()
-{
- uid_t u;
-
- u = getuid ();
- if (current_user.uid != u)
- {
- FREE (current_user.user_name);
- FREE (current_user.shell);
- FREE (current_user.home_dir);
- current_user.user_name = current_user.shell = current_user.home_dir = (char *)NULL;
- }
- current_user.uid = u;
- current_user.gid = getgid ();
- current_user.euid = geteuid ();
- current_user.egid = getegid ();
-
- /* See whether or not we are running setuid or setgid. */
- return (current_user.uid != current_user.euid) ||
- (current_user.gid != current_user.egid);
-}
-
-void
-disable_priv_mode ()
-{
- int e;
-
- if (setuid (current_user.uid) < 0)
- {
- e = errno;
- sys_error (_("cannot set uid to %d: effective uid %d"), current_user.uid, current_user.euid);
-#if defined (EXIT_ON_SETUID_FAILURE)
- if (e == EAGAIN)
- exit (e);
-#endif
- }
- if (setgid (current_user.gid) < 0)
- sys_error (_("cannot set gid to %d: effective gid %d"), current_user.gid, current_user.egid);
-
- current_user.euid = current_user.uid;
- current_user.egid = current_user.gid;
-}
-
-#if defined (WORDEXP_OPTION)
-static int
-run_wordexp (words)
- char *words;
-{
- int code, nw, nb;
- WORD_LIST *wl, *tl, *result;
-
- code = setjmp_nosigs (top_level);
-
- if (code != NOT_JUMPED)
- {
- switch (code)
- {
- /* Some kind of throw to top_level has occurred. */
- case FORCE_EOF:
- return last_command_exit_value = 127;
- case ERREXIT:
- case EXITPROG:
- return last_command_exit_value;
- case DISCARD:
- return last_command_exit_value = 1;
- default:
- command_error ("run_wordexp", CMDERR_BADJUMP, code, 0);
- }
- }
-
- /* Run it through the parser to get a list of words and expand them */
- if (words && *words)
- {
- with_input_from_string (words, "--wordexp");
- if (parse_command () != 0)
- return (126);
- if (global_command == 0)
- {
- printf ("0\n0\n");
- return (0);
- }
- if (global_command->type != cm_simple)
- return (126);
- wl = global_command->value.Simple->words;
- if (protected_mode)
- for (tl = wl; tl; tl = tl->next)
- tl->word->flags |= W_NOCOMSUB|W_NOPROCSUB;
- result = wl ? expand_words_no_vars (wl) : (WORD_LIST *)0;
- }
- else
- result = (WORD_LIST *)0;
-
- last_command_exit_value = 0;
-
- if (result == 0)
- {
- printf ("0\n0\n");
- return (0);
- }
-
- /* Count up the number of words and bytes, and print them. Don't count
- the trailing NUL byte. */
- for (nw = nb = 0, wl = result; wl; wl = wl->next)
- {
- nw++;
- nb += strlen (wl->word->word);
- }
- printf ("%u\n%u\n", nw, nb);
- /* Print each word on a separate line. This will have to be changed when
- the interface to glibc is completed. */
- for (wl = result; wl; wl = wl->next)
- printf ("%s\n", wl->word->word);
-
- return (0);
-}
-#endif
-
-#if defined (ONESHOT)
-/* Run one command, given as the argument to the -c option. Tell
- parse_and_execute not to fork for a simple command. */
-static int
-run_one_command (command)
- char *command;
-{
- int code;
-
- code = setjmp_nosigs (top_level);
-
- if (code != NOT_JUMPED)
- {
-#if defined (PROCESS_SUBSTITUTION)
- unlink_fifo_list ();
-#endif /* PROCESS_SUBSTITUTION */
- switch (code)
- {
- /* Some kind of throw to top_level has occurred. */
- case FORCE_EOF:
- return last_command_exit_value = 127;
- case ERREXIT:
- case EXITPROG:
- return last_command_exit_value;
- case DISCARD:
- return last_command_exit_value = 1;
- default:
- command_error ("run_one_command", CMDERR_BADJUMP, code, 0);
- }
- }
- return (parse_and_execute (savestring (command), "-c", SEVAL_NOHIST));
-}
-#endif /* ONESHOT */
-
-static int
-bind_args (argv, arg_start, arg_end, start_index)
- char **argv;
- int arg_start, arg_end, start_index;
-{
- register int i;
- WORD_LIST *args;
-
- for (i = arg_start, args = (WORD_LIST *)NULL; i < arg_end; i++)
- args = make_word_list (make_word (argv[i]), args);
- if (args)
- {
- args = REVERSE_LIST (args, WORD_LIST *);
- if (start_index == 0) /* bind to $0...$n for sh -c command */
- {
- /* Posix.2 4.56.3 says that the first argument after sh -c command
- becomes $0, and the rest of the arguments become $1...$n */
- shell_name = savestring (args->word->word);
- FREE (dollar_vars[0]);
- dollar_vars[0] = savestring (args->word->word);
- remember_args (args->next, 1);
- push_args (args->next); /* BASH_ARGV and BASH_ARGC */
- }
- else /* bind to $1...$n for shell script */
- {
- remember_args (args, 1);
- push_args (args); /* BASH_ARGV and BASH_ARGC */
- }
-
- dispose_words (args);
- }
-
- return (i);
-}
-
-void
-unbind_args ()
-{
- remember_args ((WORD_LIST *)NULL, 1);
- pop_args (); /* Reset BASH_ARGV and BASH_ARGC */
-}
-
-static void
-start_debugger ()
-{
-#if defined (DEBUGGER) && defined (DEBUGGER_START_FILE)
- int old_errexit;
- int r;
-
- old_errexit = exit_immediately_on_error;
- exit_immediately_on_error = 0;
-
- r = force_execute_file (DEBUGGER_START_FILE, 1);
- if (r < 0)
- {
- internal_warning ("cannot start debugger; debugging mode disabled");
- debugging_mode = function_trace_mode = 0;
- }
- else
- function_trace_mode = 1;
-
- exit_immediately_on_error += old_errexit;
-#endif
-}
-
-static int
-open_shell_script (script_name)
- char *script_name;
-{
- int fd, e, fd_is_tty;
- char *filename, *path_filename, *t;
- char sample[80];
- int sample_len;
- struct stat sb;
-#if defined (ARRAY_VARS)
- SHELL_VAR *funcname_v, *bash_source_v, *bash_lineno_v;
- ARRAY *funcname_a, *bash_source_a, *bash_lineno_a;
-#endif
-
- filename = savestring (script_name);
-
- fd = open (filename, O_RDONLY);
- if ((fd < 0) && (errno == ENOENT) && (absolute_program (filename) == 0))
- {
- e = errno;
- /* If it's not in the current directory, try looking through PATH
- for it. */
- path_filename = find_path_file (script_name);
- if (path_filename)
- {
- free (filename);
- filename = path_filename;
- fd = open (filename, O_RDONLY);
- }
- else
- errno = e;
- }
-
- if (fd < 0)
- {
- e = errno;
- file_error (filename);
- exit ((e == ENOENT) ? EX_NOTFOUND : EX_NOINPUT);
- }
-
- free (dollar_vars[0]);
- dollar_vars[0] = exec_argv0 ? savestring (exec_argv0) : savestring (script_name);
- if (exec_argv0)
- {
- free (exec_argv0);
- exec_argv0 = (char *)NULL;
- }
-
-#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);
-
- array_push (bash_source_a, filename);
- if (bash_lineno_a)
- {
- t = itos (executing_line_number ());
- array_push (bash_lineno_a, t);
- free (t);
- }
- array_push (funcname_a, "main");
-#endif
-
-#ifdef HAVE_DEV_FD
- fd_is_tty = isatty (fd);
-#else
- fd_is_tty = 0;
-#endif
-
- /* Only do this with non-tty file descriptors we can seek on. */
- if (fd_is_tty == 0 && (lseek (fd, 0L, 1) != -1))
- {
- /* Check to see if the `file' in `bash file' is a binary file
- according to the same tests done by execute_simple_command (),
- and report an error and exit if it is. */
- sample_len = read (fd, sample, sizeof (sample));
- if (sample_len < 0)
- {
- e = errno;
- if ((fstat (fd, &sb) == 0) && S_ISDIR (sb.st_mode))
- internal_error (_("%s: is a directory"), filename);
- else
- {
- errno = e;
- file_error (filename);
- }
- exit (EX_NOEXEC);
- }
- else if (sample_len > 0 && (check_binary_file (sample, sample_len)))
- {
- internal_error (_("%s: cannot execute binary file"), filename);
- exit (EX_BINARY_FILE);
- }
- /* Now rewind the file back to the beginning. */
- lseek (fd, 0L, 0);
- }
-
- /* Open the script. But try to move the file descriptor to a randomly
- large one, in the hopes that any descriptors used by the script will
- not match with ours. */
- fd = move_to_high_fd (fd, 1, -1);
-
-#if defined (BUFFERED_INPUT)
- default_buffered_input = fd;
- SET_CLOSE_ON_EXEC (default_buffered_input);
-#else /* !BUFFERED_INPUT */
- default_input = fdopen (fd, "r");
-
- if (default_input == 0)
- {
- file_error (filename);
- exit (EX_NOTFOUND);
- }
-
- SET_CLOSE_ON_EXEC (fd);
- if (fileno (default_input) != fd)
- SET_CLOSE_ON_EXEC (fileno (default_input));
-#endif /* !BUFFERED_INPUT */
-
- /* Just about the only way for this code to be executed is if something
- like `bash -i /dev/stdin' is executed. */
- if (interactive_shell && fd_is_tty)
- {
- dup2 (fd, 0);
- close (fd);
- fd = 0;
-#if defined (BUFFERED_INPUT)
- default_buffered_input = 0;
-#else
- fclose (default_input);
- default_input = stdin;
-#endif
- }
- else if (forced_interactive && fd_is_tty == 0)
- /* But if a script is called with something like `bash -i scriptname',
- we need to do a non-interactive setup here, since we didn't do it
- before. */
- init_interactive_script ();
-
- free (filename);
- return (fd);
-}
-
-/* Initialize the input routines for the parser. */
-static void
-set_bash_input ()
-{
- /* Make sure the fd from which we are reading input is not in
- no-delay mode. */
-#if defined (BUFFERED_INPUT)
- if (interactive == 0)
- sh_unset_nodelay_mode (default_buffered_input);
- else
-#endif /* !BUFFERED_INPUT */
- sh_unset_nodelay_mode (fileno (stdin));
-
- /* with_input_from_stdin really means `with_input_from_readline' */
- if (interactive && no_line_editing == 0)
- with_input_from_stdin ();
-#if defined (BUFFERED_INPUT)
- else if (interactive == 0)
- with_input_from_buffered_stream (default_buffered_input, dollar_vars[0]);
-#endif /* BUFFERED_INPUT */
- else
- with_input_from_stream (default_input, dollar_vars[0]);
-}
-
-/* Close the current shell script input source and forget about it. This is
- extern so execute_cmd.c:initialize_subshell() can call it. If CHECK_ZERO
- is non-zero, we close default_buffered_input even if it's the standard
- input (fd 0). */
-void
-unset_bash_input (check_zero)
- int check_zero;
-{
-#if defined (BUFFERED_INPUT)
- if ((check_zero && default_buffered_input >= 0) ||
- (check_zero == 0 && default_buffered_input > 0))
- {
- close_buffered_fd (default_buffered_input);
- default_buffered_input = bash_input.location.buffered_fd = -1;
- bash_input.type = st_none; /* XXX */
- }
-#else /* !BUFFERED_INPUT */
- if (default_input)
- {
- fclose (default_input);
- default_input = (FILE *)NULL;
- }
-#endif /* !BUFFERED_INPUT */
-}
-
-
-#if !defined (PROGRAM)
-# define PROGRAM "bash"
-#endif
-
-static void
-set_shell_name (argv0)
- char *argv0;
-{
- /* Here's a hack. If the name of this shell is "sh", then don't do
- any startup files; just try to be more like /bin/sh. */
- shell_name = argv0 ? base_pathname (argv0) : PROGRAM;
-
- if (argv0 && *argv0 == '-')
- {
- if (*shell_name == '-')
- shell_name++;
- login_shell = 1;
- }
-
- if (shell_name[0] == 's' && shell_name[1] == 'h' && shell_name[2] == '\0')
- act_like_sh++;
- if (shell_name[0] == 's' && shell_name[1] == 'u' && shell_name[2] == '\0')
- su_shell++;
-
- shell_name = argv0 ? argv0 : PROGRAM;
- FREE (dollar_vars[0]);
- dollar_vars[0] = savestring (shell_name);
-
- /* A program may start an interactive shell with
- "execl ("/bin/bash", "-", NULL)".
- If so, default the name of this shell to our name. */
- if (!shell_name || !*shell_name || (shell_name[0] == '-' && !shell_name[1]))
- shell_name = PROGRAM;
-}
-
-static void
-init_interactive ()
-{
- expand_aliases = interactive_shell = startup_state = 1;
- interactive = 1;
-}
-
-static void
-init_noninteractive ()
-{
-#if defined (HISTORY)
- bash_history_reinit (0);
-#endif /* HISTORY */
- interactive_shell = startup_state = interactive = 0;
- expand_aliases = posixly_correct; /* XXX - was 0 not posixly_correct */
- no_line_editing = 1;
-#if defined (JOB_CONTROL)
- /* Even if the shell is not interactive, enable job control if the -i or
- -m option is supplied at startup. */
- set_job_control (forced_interactive||jobs_m_flag);
-#endif /* JOB_CONTROL */
-}
-
-static void
-init_interactive_script ()
-{
- init_noninteractive ();
- expand_aliases = interactive_shell = startup_state = 1;
-}
-
-void
-get_current_user_info ()
-{
- struct passwd *entry;
-
- /* Don't fetch this more than once. */
- if (current_user.user_name == 0)
- {
-#if defined (__TANDEM)
- entry = getpwnam (getlogin ());
-#else
- entry = getpwuid (current_user.uid);
-#endif
- if (entry)
- {
- current_user.user_name = savestring (entry->pw_name);
- current_user.shell = (entry->pw_shell && entry->pw_shell[0])
- ? savestring (entry->pw_shell)
- : savestring ("/bin/sh");
- current_user.home_dir = savestring (entry->pw_dir);
- }
- else
- {
- current_user.user_name = _("I have no name!");
- current_user.user_name = savestring (current_user.user_name);
- current_user.shell = savestring ("/bin/sh");
- current_user.home_dir = savestring ("/");
- }
- endpwent ();
- }
-}
-
-/* Do whatever is necessary to initialize the shell.
- Put new initializations in here. */
-static void
-shell_initialize ()
-{
- char hostname[256];
- int should_be_restricted;
-
- /* Line buffer output for stderr and stdout. */
- if (shell_initialized == 0)
- {
- sh_setlinebuf (stderr);
- sh_setlinebuf (stdout);
- }
-
- /* Sort the array of shell builtins so that the binary search in
- find_shell_builtin () works correctly. */
- initialize_shell_builtins ();
-
- /* Initialize the trap signal handlers before installing our own
- signal handlers. traps.c:restore_original_signals () is responsible
- for restoring the original default signal handlers. That function
- is called when we make a new child. */
- initialize_traps ();
- initialize_signals (0);
-
- /* It's highly unlikely that this will change. */
- if (current_host_name == 0)
- {
- /* Initialize current_host_name. */
- if (gethostname (hostname, 255) < 0)
- current_host_name = "??host??";
- else
- current_host_name = savestring (hostname);
- }
-
- /* Initialize the stuff in current_user that comes from the password
- file. We don't need to do this right away if the shell is not
- interactive. */
- if (interactive_shell)
- get_current_user_info ();
-
- /* Initialize our interface to the tilde expander. */
- tilde_initialize ();
-
-#if defined (RESTRICTED_SHELL)
- should_be_restricted = shell_is_restricted (shell_name);
-#endif
-
- /* Initialize internal and environment variables. Don't import shell
- functions from the environment if we are running in privileged or
- restricted mode or if the shell is running setuid. */
-#if defined (RESTRICTED_SHELL)
- initialize_shell_variables (shell_environment, privileged_mode||restricted||should_be_restricted||running_setuid);
-#else
- initialize_shell_variables (shell_environment, privileged_mode||running_setuid);
-#endif
-
- /* Initialize the data structures for storing and running jobs. */
- initialize_job_control (jobs_m_flag);
-
- /* Initialize input streams to null. */
- initialize_bash_input ();
-
- initialize_flags ();
-
- /* Initialize the shell options. Don't import the shell options
- from the environment variables $SHELLOPTS or $BASHOPTS if we are
- running in privileged or restricted mode or if the shell is running
- setuid. */
-#if defined (RESTRICTED_SHELL)
- initialize_shell_options (privileged_mode||restricted||should_be_restricted||running_setuid);
- initialize_bashopts (privileged_mode||restricted||should_be_restricted||running_setuid);
-#else
- initialize_shell_options (privileged_mode||running_setuid);
- initialize_bashopts (privileged_mode||running_setuid);
-#endif
-}
-
-/* Function called by main () when it appears that the shell has already
- had some initialization performed. This is supposed to reset the world
- back to a pristine state, as if we had been exec'ed. */
-static void
-shell_reinitialize ()
-{
- /* The default shell prompts. */
- primary_prompt = PPROMPT;
- secondary_prompt = SPROMPT;
-
- /* Things that get 1. */
- current_command_number = 1;
-
- /* We have decided that the ~/.bashrc file should not be executed
- for the invocation of each shell script. If the variable $ENV
- (or $BASH_ENV) is set, its value is used as the name of a file
- to source. */
- no_rc = no_profile = 1;
-
- /* Things that get 0. */
- login_shell = make_login_shell = interactive = executing = 0;
- debugging = do_version = line_number = last_command_exit_value = 0;
- forced_interactive = interactive_shell = 0;
- subshell_environment = running_in_background = 0;
- expand_aliases = 0;
-
- /* XXX - should we set jobs_m_flag to 0 here? */
-
-#if defined (HISTORY)
- bash_history_reinit (0);
-#endif /* HISTORY */
-
-#if defined (RESTRICTED_SHELL)
- restricted = 0;
-#endif /* RESTRICTED_SHELL */
-
- /* Ensure that the default startup file is used. (Except that we don't
- execute this file for reinitialized shells). */
- bashrc_file = DEFAULT_BASHRC;
-
- /* Delete all variables and functions. They will be reinitialized when
- the environment is parsed. */
- delete_all_contexts (shell_variables);
- delete_all_variables (shell_functions);
-
- reinit_special_variables ();
-
-#if defined (READLINE)
- bashline_reinitialize ();
-#endif
-
- shell_reinitialized = 1;
-}
-
-static void
-show_shell_usage (fp, extra)
- FILE *fp;
- int extra;
-{
- int i;
- char *set_opts, *s, *t;
-
- if (extra)
- fprintf (fp, _("GNU bash, version %s-(%s)\n"), shell_version_string (), MACHTYPE);
- fprintf (fp, _("Usage:\t%s [GNU long option] [option] ...\n\t%s [GNU long option] [option] script-file ...\n"),
- shell_name, shell_name);
- fputs (_("GNU long options:\n"), fp);
- for (i = 0; long_args[i].name; i++)
- fprintf (fp, "\t--%s\n", long_args[i].name);
-
- fputs (_("Shell options:\n"), fp);
- fputs (_("\t-ilrsD or -c command or -O shopt_option\t\t(invocation only)\n"), fp);
-
- for (i = 0, set_opts = 0; shell_builtins[i].name; i++)
- if (STREQ (shell_builtins[i].name, "set"))
- set_opts = savestring (shell_builtins[i].short_doc);
- if (set_opts)
- {
- s = strchr (set_opts, '[');
- if (s == 0)
- s = set_opts;
- while (*++s == '-')
- ;
- t = strchr (s, ']');
- if (t)
- *t = '\0';
- fprintf (fp, _("\t-%s or -o option\n"), s);
- free (set_opts);
- }
-
- if (extra)
- {
- fprintf (fp, _("Type `%s -c \"help set\"' for more information about shell options.\n"), shell_name);
- fprintf (fp, _("Type `%s -c help' for more information about shell builtin commands.\n"), shell_name);
- fprintf (fp, _("Use the `bashbug' command to report bugs.\n"));
- }
-}
-
-static void
-add_shopt_to_alist (opt, on_or_off)
- char *opt;
- int on_or_off;
-{
- if (shopt_ind >= shopt_len)
- {
- shopt_len += 8;
- shopt_alist = (STRING_INT_ALIST *)xrealloc (shopt_alist, shopt_len * sizeof (shopt_alist[0]));
- }
- shopt_alist[shopt_ind].word = opt;
- shopt_alist[shopt_ind].token = on_or_off;
- shopt_ind++;
-}
-
-static void
-run_shopt_alist ()
-{
- register int i;
-
- for (i = 0; i < shopt_ind; i++)
- if (shopt_setopt (shopt_alist[i].word, (shopt_alist[i].token == '-')) != EXECUTION_SUCCESS)
- exit (EX_BADUSAGE);
- free (shopt_alist);
- shopt_alist = 0;
- shopt_ind = shopt_len = 0;
-}
+++ /dev/null
-BUILD_DIR=/usr/local/build/chet/bash/bash-current
-THIS_SH=$BUILD_DIR/bash
-PATH=$PATH:$BUILD_DIR
-
-export THIS_SH PATH
-
-rm -f /tmp/xx
-
-/bin/sh "$@"
+++ /dev/null
-:; ./shx
-
-sh:
-<&$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...
-:;
+++ /dev/null
-#! /bin/sh
-for cmd in sh bash ash ksh zsh
-do
- echo
- echo $cmd:
- for demo in shx?
- do
- $cmd $demo
- done
-done
+++ /dev/null
-/* variables.c -- Functions for hacking shell variables. */
-
-/* Copyright (C) 1987-2015 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 <http://www.gnu.org/licenses/>.
-*/
-
-#include "config.h"
-
-#include "bashtypes.h"
-#include "posixstat.h"
-#include "posixtime.h"
-
-#if defined (__QNX__)
-# if defined (__QNXNTO__)
-# include <sys/netmgr.h>
-# else
-# include <sys/vc.h>
-# endif /* !__QNXNTO__ */
-#endif /* __QNX__ */
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif
-
-#include <stdio.h>
-#include "chartypes.h"
-#if defined (HAVE_PWD_H)
-# include <pwd.h>
-#endif
-#include "bashansi.h"
-#include "bashintl.h"
-
-#define NEED_XTRACE_SET_DECL
-
-#include "shell.h"
-#include "flags.h"
-#include "execute_cmd.h"
-#include "findcmd.h"
-#include "mailcheck.h"
-#include "input.h"
-#include "hashcmd.h"
-#include "pathexp.h"
-#include "alias.h"
-#include "jobs.h"
-
-#include "version.h"
-
-#include "builtins/getopt.h"
-#include "builtins/common.h"
-#include "builtins/builtext.h"
-
-#if defined (READLINE)
-# include "bashline.h"
-# include <readline/readline.h>
-#else
-# include <tilde/tilde.h>
-#endif
-
-#if defined (HISTORY)
-# include "bashhist.h"
-# include <readline/history.h>
-#endif /* HISTORY */
-
-#if defined (PROGRAMMABLE_COMPLETION)
-# include "pcomplete.h"
-#endif
-
-#define TEMPENV_HASH_BUCKETS 4 /* must be power of two */
-
-#define ifsname(s) ((s)[0] == 'I' && (s)[1] == 'F' && (s)[2] == 'S' && (s)[3] == '\0')
-
-#define BASHFUNC_PREFIX "BASH_FUNC_"
-#define BASHFUNC_PREFLEN 10 /* == strlen(BASHFUNC_PREFIX */
-#define BASHFUNC_SUFFIX "%%"
-#define BASHFUNC_SUFFLEN 2 /* == strlen(BASHFUNC_SUFFIX) */
-
-/* flags for find_variable_internal */
-
-#define FV_FORCETEMPENV 0x01
-#define FV_SKIPINVISIBLE 0x02
-
-extern char **environ;
-
-/* Variables used here and defined in other files. */
-extern int posixly_correct;
-extern int line_number, line_number_base;
-extern int subshell_environment, indirection_level, subshell_level;
-extern int build_version, patch_level;
-extern int expanding_redir;
-extern int last_command_exit_value;
-extern char *dist_version, *release_status;
-extern char *shell_name;
-extern char *primary_prompt, *secondary_prompt;
-extern char *current_host_name;
-extern sh_builtin_func_t *this_shell_builtin;
-extern SHELL_VAR *this_shell_function;
-extern char *the_printed_command_except_trap;
-extern char *this_command_name;
-extern char *command_execution_string;
-extern time_t shell_start_time;
-extern int assigning_in_environment;
-extern int executing_builtin;
-extern int funcnest_max;
-
-#if defined (READLINE)
-extern int no_line_editing;
-extern int perform_hostname_completion;
-#endif
-
-/* The list of shell variables that the user has created at the global
- scope, or that came from the environment. */
-VAR_CONTEXT *global_variables = (VAR_CONTEXT *)NULL;
-
-/* The current list of shell variables, including function scopes */
-VAR_CONTEXT *shell_variables = (VAR_CONTEXT *)NULL;
-
-/* The list of shell functions that the user has created, or that came from
- the environment. */
-HASH_TABLE *shell_functions = (HASH_TABLE *)NULL;
-
-#if defined (DEBUGGER)
-/* The table of shell function definitions that the user defined or that
- came from the environment. */
-HASH_TABLE *shell_function_defs = (HASH_TABLE *)NULL;
-#endif
-
-/* The current variable context. This is really a count of how deep into
- executing functions we are. */
-int variable_context = 0;
-
-/* The set of shell assignments which are made only in the environment
- for a single command. */
-HASH_TABLE *temporary_env = (HASH_TABLE *)NULL;
-
-/* Set to non-zero if an assignment error occurs while putting variables
- into the temporary environment. */
-int tempenv_assign_error;
-
-/* Some funky variables which are known about specially. Here is where
- "$*", "$1", and all the cruft is kept. */
-char *dollar_vars[10];
-WORD_LIST *rest_of_args = (WORD_LIST *)NULL;
-
-/* The value of $$. */
-pid_t dollar_dollar_pid;
-
-/* Non-zero means that we have to remake EXPORT_ENV. */
-int array_needs_making = 1;
-
-/* The number of times BASH has been executed. This is set
- by initialize_variables (). */
-int shell_level = 0;
-
-/* An array which is passed to commands as their environment. It is
- manufactured from the union of the initial environment and the
- shell variables that are marked for export. */
-char **export_env = (char **)NULL;
-static int export_env_index;
-static int export_env_size;
-
-#if defined (READLINE)
-static int winsize_assignment; /* currently assigning to LINES or COLUMNS */
-#endif
-
-static HASH_TABLE *last_table_searched; /* hash_lookup sets this */
-
-/* Some forward declarations. */
-static void create_variable_tables __P((void));
-
-static void set_machine_vars __P((void));
-static void set_home_var __P((void));
-static void set_shell_var __P((void));
-static char *get_bash_name __P((void));
-static void initialize_shell_level __P((void));
-static void uidset __P((void));
-#if defined (ARRAY_VARS)
-static void make_vers_array __P((void));
-#endif
-
-static SHELL_VAR *null_assign __P((SHELL_VAR *, char *, arrayind_t, char *));
-#if defined (ARRAY_VARS)
-static SHELL_VAR *null_array_assign __P((SHELL_VAR *, char *, arrayind_t, char *));
-#endif
-static SHELL_VAR *get_self __P((SHELL_VAR *));
-
-#if defined (ARRAY_VARS)
-static SHELL_VAR *init_dynamic_array_var __P((char *, sh_var_value_func_t *, sh_var_assign_func_t *, int));
-static SHELL_VAR *init_dynamic_assoc_var __P((char *, sh_var_value_func_t *, sh_var_assign_func_t *, int));
-#endif
-
-static SHELL_VAR *assign_seconds __P((SHELL_VAR *, char *, arrayind_t, char *));
-static SHELL_VAR *get_seconds __P((SHELL_VAR *));
-static SHELL_VAR *init_seconds_var __P((void));
-
-static int brand __P((void));
-static void sbrand __P((unsigned long)); /* set bash random number generator. */
-static void seedrand __P((void)); /* seed generator randomly */
-static SHELL_VAR *assign_random __P((SHELL_VAR *, char *, arrayind_t, char *));
-static SHELL_VAR *get_random __P((SHELL_VAR *));
-
-static SHELL_VAR *assign_lineno __P((SHELL_VAR *, char *, arrayind_t, char *));
-static SHELL_VAR *get_lineno __P((SHELL_VAR *));
-
-static SHELL_VAR *assign_subshell __P((SHELL_VAR *, char *, arrayind_t, char *));
-static SHELL_VAR *get_subshell __P((SHELL_VAR *));
-
-static SHELL_VAR *get_bashpid __P((SHELL_VAR *));
-
-#if defined (HISTORY)
-static SHELL_VAR *get_histcmd __P((SHELL_VAR *));
-#endif
-
-#if defined (READLINE)
-static SHELL_VAR *get_comp_wordbreaks __P((SHELL_VAR *));
-static SHELL_VAR *assign_comp_wordbreaks __P((SHELL_VAR *, char *, arrayind_t, char *));
-#endif
-
-#if defined (PUSHD_AND_POPD) && defined (ARRAY_VARS)
-static SHELL_VAR *assign_dirstack __P((SHELL_VAR *, char *, arrayind_t, char *));
-static SHELL_VAR *get_dirstack __P((SHELL_VAR *));
-#endif
-
-#if defined (ARRAY_VARS)
-static SHELL_VAR *get_groupset __P((SHELL_VAR *));
-
-static SHELL_VAR *build_hashcmd __P((SHELL_VAR *));
-static SHELL_VAR *get_hashcmd __P((SHELL_VAR *));
-static SHELL_VAR *assign_hashcmd __P((SHELL_VAR *, char *, arrayind_t, char *));
-# if defined (ALIAS)
-static SHELL_VAR *build_aliasvar __P((SHELL_VAR *));
-static SHELL_VAR *get_aliasvar __P((SHELL_VAR *));
-static SHELL_VAR *assign_aliasvar __P((SHELL_VAR *, char *, arrayind_t, char *));
-# endif
-#endif
-
-static SHELL_VAR *get_funcname __P((SHELL_VAR *));
-static SHELL_VAR *init_funcname_var __P((void));
-
-static void initialize_dynamic_variables __P((void));
-
-static SHELL_VAR *hash_lookup __P((const char *, HASH_TABLE *));
-static SHELL_VAR *new_shell_variable __P((const char *));
-static SHELL_VAR *make_new_variable __P((const char *, HASH_TABLE *));
-static SHELL_VAR *bind_variable_internal __P((const char *, char *, HASH_TABLE *, int, int));
-
-static void dispose_variable_value __P((SHELL_VAR *));
-static void free_variable_hash_data __P((PTR_T));
-
-static VARLIST *vlist_alloc __P((int));
-static VARLIST *vlist_realloc __P((VARLIST *, int));
-static void vlist_add __P((VARLIST *, SHELL_VAR *, int));
-
-static void flatten __P((HASH_TABLE *, sh_var_map_func_t *, VARLIST *, int));
-
-static int qsort_var_comp __P((SHELL_VAR **, SHELL_VAR **));
-
-static SHELL_VAR **vapply __P((sh_var_map_func_t *));
-static SHELL_VAR **fapply __P((sh_var_map_func_t *));
-
-static int visible_var __P((SHELL_VAR *));
-static int visible_and_exported __P((SHELL_VAR *));
-static int export_environment_candidate __P((SHELL_VAR *));
-static int local_and_exported __P((SHELL_VAR *));
-static int variable_in_context __P((SHELL_VAR *));
-#if defined (ARRAY_VARS)
-static int visible_array_vars __P((SHELL_VAR *));
-#endif
-
-static SHELL_VAR *find_nameref_at_context __P((SHELL_VAR *, VAR_CONTEXT *));
-static SHELL_VAR *find_variable_nameref_context __P((SHELL_VAR *, VAR_CONTEXT *, VAR_CONTEXT **));
-static SHELL_VAR *find_variable_last_nameref_context __P((SHELL_VAR *, VAR_CONTEXT *, VAR_CONTEXT **));
-
-static SHELL_VAR *bind_tempenv_variable __P((const char *, char *));
-static void push_temp_var __P((PTR_T));
-static void propagate_temp_var __P((PTR_T));
-static void dispose_temporary_env __P((sh_free_func_t *));
-
-static inline char *mk_env_string __P((const char *, const char *, int));
-static char **make_env_array_from_var_list __P((SHELL_VAR **));
-static char **make_var_export_array __P((VAR_CONTEXT *));
-static char **make_func_export_array __P((void));
-static void add_temp_array_to_env __P((char **, int, int));
-
-static int n_shell_variables __P((void));
-static int set_context __P((SHELL_VAR *));
-
-static void push_func_var __P((PTR_T));
-static void push_exported_var __P((PTR_T));
-
-static inline int find_special_var __P((const char *));
-
-static void
-create_variable_tables ()
-{
- if (shell_variables == 0)
- {
- shell_variables = global_variables = new_var_context ((char *)NULL, 0);
- shell_variables->scope = 0;
- shell_variables->table = hash_create (0);
- }
-
- if (shell_functions == 0)
- shell_functions = hash_create (0);
-
-#if defined (DEBUGGER)
- if (shell_function_defs == 0)
- shell_function_defs = hash_create (0);
-#endif
-}
-
-/* Initialize the shell variables from the current environment.
- If PRIVMODE is nonzero, don't import functions from ENV or
- parse $SHELLOPTS. */
-void
-initialize_shell_variables (env, privmode)
- char **env;
- int privmode;
-{
- char *name, *string, *temp_string;
- int c, char_index, string_index, string_length, ro;
- SHELL_VAR *temp_var;
-
- create_variable_tables ();
-
- for (string_index = 0; string = env[string_index++]; )
- {
- char_index = 0;
- name = string;
- while ((c = *string++) && c != '=')
- ;
- if (string[-1] == '=')
- char_index = string - name - 1;
-
- /* If there are weird things in the environment, like `=xxx' or a
- string without an `=', just skip them. */
- if (char_index == 0)
- continue;
-
- /* ASSERT(name[char_index] == '=') */
- name[char_index] = '\0';
- /* Now, name = env variable name, string = env variable value, and
- char_index == strlen (name) */
-
- temp_var = (SHELL_VAR *)NULL;
-
-#if defined (FUNCTION_IMPORT)
- /* If exported function, define it now. Don't import functions from
- the environment in privileged mode. */
- if (privmode == 0 && read_but_dont_execute == 0 &&
- STREQN (BASHFUNC_PREFIX, name, BASHFUNC_PREFLEN) &&
- STREQ (BASHFUNC_SUFFIX, name + char_index - BASHFUNC_SUFFLEN) &&
- STREQN ("() {", string, 4))
- {
- size_t namelen;
- char *tname; /* desired imported function name */
-
- namelen = char_index - BASHFUNC_PREFLEN - BASHFUNC_SUFFLEN;
-
- tname = name + BASHFUNC_PREFLEN; /* start of func name */
- tname[namelen] = '\0'; /* now tname == func name */
-
- string_length = strlen (string);
- temp_string = (char *)xmalloc (namelen + string_length + 2);
-
- memcpy (temp_string, tname, namelen);
- temp_string[namelen] = ' ';
- memcpy (temp_string + namelen + 1, string, string_length + 1);
-
- /* Don't import function names that are invalid identifiers from the
- environment in posix mode, though we still allow them to be defined as
- shell variables. */
- if (absolute_program (tname) == 0 && (posixly_correct == 0 || legal_identifier (tname)))
- parse_and_execute (temp_string, tname, SEVAL_NONINT|SEVAL_NOHIST|SEVAL_FUNCDEF|SEVAL_ONECMD);
- else
- free (temp_string); /* parse_and_execute does this */
-
- if (temp_var = find_function (tname))
- {
- VSETATTR (temp_var, (att_exported|att_imported));
- array_needs_making = 1;
- }
- else
- {
- if (temp_var = bind_variable (name, string, 0))
- {
- VSETATTR (temp_var, (att_exported | att_imported | att_invisible));
- array_needs_making = 1;
- }
- last_command_exit_value = 1;
- report_error (_("error importing function definition for `%s'"), tname);
- }
-
- /* Restore original suffix */
- tname[namelen] = BASHFUNC_SUFFIX[0];
- }
-#endif /* FUNCTION_IMPORT */
-#if defined (ARRAY_VARS)
-# if ARRAY_EXPORT
- /* Array variables may not yet be exported. */
- else if (*string == '(' && string[1] == '[' && string[strlen (string) - 1] == ')')
- {
- string_length = 1;
- temp_string = extract_array_assignment_list (string, &string_length);
- temp_var = assign_array_from_string (name, temp_string);
- FREE (temp_string);
- VSETATTR (temp_var, (att_exported | att_imported));
- array_needs_making = 1;
- }
-# endif /* ARRAY_EXPORT */
-#endif
- else
- {
- ro = 0;
- if (posixly_correct && STREQ (name, "SHELLOPTS"))
- {
- temp_var = find_variable ("SHELLOPTS");
- ro = temp_var && readonly_p (temp_var);
- if (temp_var)
- VUNSETATTR (temp_var, att_readonly);
- }
- temp_var = bind_variable (name, string, 0);
- if (temp_var)
- {
- if (legal_identifier (name))
- VSETATTR (temp_var, (att_exported | att_imported));
- else
- VSETATTR (temp_var, (att_exported | att_imported | att_invisible));
- if (ro)
- VSETATTR (temp_var, att_readonly);
- array_needs_making = 1;
- }
- }
-
- name[char_index] = '=';
- /* temp_var can be NULL if it was an exported function with a syntax
- error (a different bug, but it still shouldn't dump core). */
- if (temp_var && function_p (temp_var) == 0) /* XXX not yet */
- {
- CACHE_IMPORTSTR (temp_var, name);
- }
- }
-
- set_pwd ();
-
- /* Set up initial value of $_ */
- temp_var = set_if_not ("_", dollar_vars[0]);
-
- /* Remember this pid. */
- dollar_dollar_pid = getpid ();
-
- /* Now make our own defaults in case the vars that we think are
- important are missing. */
- temp_var = set_if_not ("PATH", DEFAULT_PATH_VALUE);
-#if 0
- set_auto_export (temp_var); /* XXX */
-#endif
-
- temp_var = set_if_not ("TERM", "dumb");
-#if 0
- set_auto_export (temp_var); /* XXX */
-#endif
-
-#if defined (__QNX__)
- /* set node id -- don't import it from the environment */
- {
- char node_name[22];
-# if defined (__QNXNTO__)
- netmgr_ndtostr(ND2S_LOCAL_STR, ND_LOCAL_NODE, node_name, sizeof(node_name));
-# else
- qnx_nidtostr (getnid (), node_name, sizeof (node_name));
-# endif
- temp_var = bind_variable ("NODE", node_name, 0);
- set_auto_export (temp_var);
- }
-#endif
-
- /* set up the prompts. */
- if (interactive_shell)
- {
-#if defined (PROMPT_STRING_DECODE)
- set_if_not ("PS1", primary_prompt);
-#else
- if (current_user.uid == -1)
- get_current_user_info ();
- set_if_not ("PS1", current_user.euid == 0 ? "# " : primary_prompt);
-#endif
- set_if_not ("PS2", secondary_prompt);
- }
- set_if_not ("PS4", "+ ");
-
- /* Don't allow IFS to be imported from the environment. */
- temp_var = bind_variable ("IFS", " \t\n", 0);
- setifs (temp_var);
-
- /* Magic machine types. Pretty convenient. */
- set_machine_vars ();
-
- /* Default MAILCHECK for interactive shells. Defer the creation of a
- default MAILPATH until the startup files are read, because MAIL
- names a mail file if MAILPATH is not set, and we should provide a
- default only if neither is set. */
- if (interactive_shell)
- {
- temp_var = set_if_not ("MAILCHECK", posixly_correct ? "600" : "60");
- VSETATTR (temp_var, att_integer);
- }
-
- /* Do some things with shell level. */
- initialize_shell_level ();
-
- set_ppid ();
-
- /* Initialize the `getopts' stuff. */
- temp_var = bind_variable ("OPTIND", "1", 0);
- VSETATTR (temp_var, att_integer);
- getopts_reset (0);
- bind_variable ("OPTERR", "1", 0);
- sh_opterr = 1;
-
- if (login_shell == 1 && posixly_correct == 0)
- set_home_var ();
-
- /* Get the full pathname to THIS shell, and set the BASH variable
- to it. */
- name = get_bash_name ();
- temp_var = bind_variable ("BASH", name, 0);
- free (name);
-
- /* Make the exported environment variable SHELL be the user's login
- shell. Note that the `tset' command looks at this variable
- to determine what style of commands to output; if it ends in "csh",
- then C-shell commands are output, else Bourne shell commands. */
- set_shell_var ();
-
- /* Make a variable called BASH_VERSION which contains the version info. */
- bind_variable ("BASH_VERSION", shell_version_string (), 0);
-#if defined (ARRAY_VARS)
- make_vers_array ();
-#endif
-
- if (command_execution_string)
- bind_variable ("BASH_EXECUTION_STRING", command_execution_string, 0);
-
- /* Find out if we're supposed to be in Posix.2 mode via an
- environment variable. */
- temp_var = find_variable ("POSIXLY_CORRECT");
- if (!temp_var)
- temp_var = find_variable ("POSIX_PEDANTIC");
- if (temp_var && imported_p (temp_var))
- sv_strict_posix (temp_var->name);
-
-#if defined (HISTORY)
- /* Set history variables to defaults, and then do whatever we would
- do if the variable had just been set. Do this only in the case
- that we are remembering commands on the history list. */
- if (remember_on_history)
- {
- name = bash_tilde_expand (posixly_correct ? "~/.sh_history" : "~/.bash_history", 0);
-
- set_if_not ("HISTFILE", name);
- free (name);
- }
-#endif /* HISTORY */
-
- /* Seed the random number generator. */
- seedrand ();
-
- /* Handle some "special" variables that we may have inherited from a
- parent shell. */
- if (interactive_shell)
- {
- temp_var = find_variable ("IGNOREEOF");
- if (!temp_var)
- temp_var = find_variable ("ignoreeof");
- if (temp_var && imported_p (temp_var))
- sv_ignoreeof (temp_var->name);
- }
-
-#if defined (HISTORY)
- if (interactive_shell && remember_on_history)
- {
- sv_history_control ("HISTCONTROL");
- sv_histignore ("HISTIGNORE");
- sv_histtimefmt ("HISTTIMEFORMAT");
- }
-#endif /* HISTORY */
-
-#if defined (READLINE) && defined (STRICT_POSIX)
- /* POSIXLY_CORRECT will only be 1 here if the shell was compiled
- -DSTRICT_POSIX */
- if (interactive_shell && posixly_correct && no_line_editing == 0)
- rl_prefer_env_winsize = 1;
-#endif /* READLINE && STRICT_POSIX */
-
- /*
- * 24 October 2001
- *
- * I'm tired of the arguing and bug reports. Bash now leaves SSH_CLIENT
- * and SSH2_CLIENT alone. I'm going to rely on the shell_level check in
- * isnetconn() to avoid running the startup files more often than wanted.
- * That will, of course, only work if the user's login shell is bash, so
- * I've made that behavior conditional on SSH_SOURCE_BASHRC being defined
- * in config-top.h.
- */
-#if 0
- temp_var = find_variable ("SSH_CLIENT");
- if (temp_var && imported_p (temp_var))
- {
- VUNSETATTR (temp_var, att_exported);
- array_needs_making = 1;
- }
- temp_var = find_variable ("SSH2_CLIENT");
- if (temp_var && imported_p (temp_var))
- {
- VUNSETATTR (temp_var, att_exported);
- array_needs_making = 1;
- }
-#endif
-
- /* Get the user's real and effective user ids. */
- uidset ();
-
- temp_var = find_variable ("BASH_XTRACEFD");
- if (temp_var && imported_p (temp_var))
- sv_xtracefd (temp_var->name);
-
- /* Initialize the dynamic variables, and seed their values. */
- initialize_dynamic_variables ();
-}
-
-/* **************************************************************** */
-/* */
-/* Setting values for special shell variables */
-/* */
-/* **************************************************************** */
-
-static void
-set_machine_vars ()
-{
- SHELL_VAR *temp_var;
-
- temp_var = set_if_not ("HOSTTYPE", HOSTTYPE);
- temp_var = set_if_not ("OSTYPE", OSTYPE);
- temp_var = set_if_not ("MACHTYPE", MACHTYPE);
-
- temp_var = set_if_not ("HOSTNAME", current_host_name);
-}
-
-/* Set $HOME to the information in the password file if we didn't get
- it from the environment. */
-
-/* This function is not static so the tilde and readline libraries can
- use it. */
-char *
-sh_get_home_dir ()
-{
- if (current_user.home_dir == 0)
- get_current_user_info ();
- return current_user.home_dir;
-}
-
-static void
-set_home_var ()
-{
- SHELL_VAR *temp_var;
-
- temp_var = find_variable ("HOME");
- if (temp_var == 0)
- temp_var = bind_variable ("HOME", sh_get_home_dir (), 0);
-#if 0
- VSETATTR (temp_var, att_exported);
-#endif
-}
-
-/* Set $SHELL to the user's login shell if it is not already set. Call
- get_current_user_info if we haven't already fetched the shell. */
-static void
-set_shell_var ()
-{
- SHELL_VAR *temp_var;
-
- temp_var = find_variable ("SHELL");
- if (temp_var == 0)
- {
- if (current_user.shell == 0)
- get_current_user_info ();
- temp_var = bind_variable ("SHELL", current_user.shell, 0);
- }
-#if 0
- VSETATTR (temp_var, att_exported);
-#endif
-}
-
-static char *
-get_bash_name ()
-{
- char *name;
-
- if ((login_shell == 1) && RELPATH(shell_name))
- {
- if (current_user.shell == 0)
- get_current_user_info ();
- name = savestring (current_user.shell);
- }
- else if (ABSPATH(shell_name))
- name = savestring (shell_name);
- else if (shell_name[0] == '.' && shell_name[1] == '/')
- {
- /* Fast path for common case. */
- char *cdir;
- int len;
-
- cdir = get_string_value ("PWD");
- if (cdir)
- {
- len = strlen (cdir);
- name = (char *)xmalloc (len + strlen (shell_name) + 1);
- strcpy (name, cdir);
- strcpy (name + len, shell_name + 1);
- }
- else
- name = savestring (shell_name);
- }
- else
- {
- char *tname;
- int s;
-
- tname = find_user_command (shell_name);
-
- if (tname == 0)
- {
- /* Try the current directory. If there is not an executable
- there, just punt and use the login shell. */
- s = file_status (shell_name);
- if (s & FS_EXECABLE)
- {
- tname = make_absolute (shell_name, get_string_value ("PWD"));
- if (*shell_name == '.')
- {
- name = sh_canonpath (tname, PATH_CHECKDOTDOT|PATH_CHECKEXISTS);
- if (name == 0)
- name = tname;
- else
- free (tname);
- }
- else
- name = tname;
- }
- else
- {
- if (current_user.shell == 0)
- get_current_user_info ();
- name = savestring (current_user.shell);
- }
- }
- else
- {
- name = full_pathname (tname);
- free (tname);
- }
- }
-
- return (name);
-}
-
-void
-adjust_shell_level (change)
- int change;
-{
- char new_level[5], *old_SHLVL;
- intmax_t old_level;
- SHELL_VAR *temp_var;
-
- old_SHLVL = get_string_value ("SHLVL");
- if (old_SHLVL == 0 || *old_SHLVL == '\0' || legal_number (old_SHLVL, &old_level) == 0)
- old_level = 0;
-
- shell_level = old_level + change;
- if (shell_level < 0)
- shell_level = 0;
- else if (shell_level > 1000)
- {
- internal_warning (_("shell level (%d) too high, resetting to 1"), shell_level);
- shell_level = 1;
- }
-
- /* We don't need the full generality of itos here. */
- if (shell_level < 10)
- {
- new_level[0] = shell_level + '0';
- new_level[1] = '\0';
- }
- else if (shell_level < 100)
- {
- new_level[0] = (shell_level / 10) + '0';
- new_level[1] = (shell_level % 10) + '0';
- new_level[2] = '\0';
- }
- else if (shell_level < 1000)
- {
- new_level[0] = (shell_level / 100) + '0';
- old_level = shell_level % 100;
- new_level[1] = (old_level / 10) + '0';
- new_level[2] = (old_level % 10) + '0';
- new_level[3] = '\0';
- }
-
- temp_var = bind_variable ("SHLVL", new_level, 0);
- set_auto_export (temp_var);
-}
-
-static void
-initialize_shell_level ()
-{
- adjust_shell_level (1);
-}
-
-/* If we got PWD from the environment, update our idea of the current
- working directory. In any case, make sure that PWD exists before
- checking it. It is possible for getcwd () to fail on shell startup,
- and in that case, PWD would be undefined. If this is an interactive
- login shell, see if $HOME is the current working directory, and if
- that's not the same string as $PWD, set PWD=$HOME. */
-
-void
-set_pwd ()
-{
- SHELL_VAR *temp_var, *home_var;
- char *temp_string, *home_string;
-
- home_var = find_variable ("HOME");
- home_string = home_var ? value_cell (home_var) : (char *)NULL;
-
- temp_var = find_variable ("PWD");
- if (temp_var && imported_p (temp_var) &&
- (temp_string = value_cell (temp_var)) &&
- same_file (temp_string, ".", (struct stat *)NULL, (struct stat *)NULL))
- set_working_directory (temp_string);
- else if (home_string && interactive_shell && login_shell &&
- same_file (home_string, ".", (struct stat *)NULL, (struct stat *)NULL))
- {
- set_working_directory (home_string);
- temp_var = bind_variable ("PWD", home_string, 0);
- set_auto_export (temp_var);
- }
- else
- {
- temp_string = get_working_directory ("shell-init");
- if (temp_string)
- {
- temp_var = bind_variable ("PWD", temp_string, 0);
- set_auto_export (temp_var);
- free (temp_string);
- }
- }
-
- /* According to the Single Unix Specification, v2, $OLDPWD is an
- `environment variable' and therefore should be auto-exported.
- Make a dummy invisible variable for OLDPWD, and mark it as exported. */
- temp_var = bind_variable ("OLDPWD", (char *)NULL, 0);
- VSETATTR (temp_var, (att_exported | att_invisible));
-}
-
-/* Make a variable $PPID, which holds the pid of the shell's parent. */
-void
-set_ppid ()
-{
- char namebuf[INT_STRLEN_BOUND(pid_t) + 1], *name;
- SHELL_VAR *temp_var;
-
- name = inttostr (getppid (), namebuf, sizeof(namebuf));
- temp_var = find_variable ("PPID");
- if (temp_var)
- VUNSETATTR (temp_var, (att_readonly | att_exported));
- temp_var = bind_variable ("PPID", name, 0);
- VSETATTR (temp_var, (att_readonly | att_integer));
-}
-
-static void
-uidset ()
-{
- char buff[INT_STRLEN_BOUND(uid_t) + 1], *b;
- register SHELL_VAR *v;
-
- b = inttostr (current_user.uid, buff, sizeof (buff));
- v = find_variable ("UID");
- if (v == 0)
- {
- v = bind_variable ("UID", b, 0);
- VSETATTR (v, (att_readonly | att_integer));
- }
-
- if (current_user.euid != current_user.uid)
- b = inttostr (current_user.euid, buff, sizeof (buff));
-
- v = find_variable ("EUID");
- if (v == 0)
- {
- v = bind_variable ("EUID", b, 0);
- VSETATTR (v, (att_readonly | att_integer));
- }
-}
-
-#if defined (ARRAY_VARS)
-static void
-make_vers_array ()
-{
- SHELL_VAR *vv;
- ARRAY *av;
- char *s, d[32], b[INT_STRLEN_BOUND(int) + 1];
-
- unbind_variable ("BASH_VERSINFO");
-
- vv = make_new_array_variable ("BASH_VERSINFO");
- av = array_cell (vv);
- strcpy (d, dist_version);
- s = strchr (d, '.');
- if (s)
- *s++ = '\0';
- array_insert (av, 0, d);
- array_insert (av, 1, s);
- s = inttostr (patch_level, b, sizeof (b));
- array_insert (av, 2, s);
- s = inttostr (build_version, b, sizeof (b));
- array_insert (av, 3, s);
- array_insert (av, 4, release_status);
- array_insert (av, 5, MACHTYPE);
-
- VSETATTR (vv, att_readonly);
-}
-#endif /* ARRAY_VARS */
-
-/* Set the environment variables $LINES and $COLUMNS in response to
- a window size change. */
-void
-sh_set_lines_and_columns (lines, cols)
- int lines, cols;
-{
- char val[INT_STRLEN_BOUND(int) + 1], *v;
-
-#if defined (READLINE)
- /* If we are currently assigning to LINES or COLUMNS, don't do anything. */
- if (winsize_assignment)
- return;
-#endif
-
- v = inttostr (lines, val, sizeof (val));
- bind_variable ("LINES", v, 0);
-
- v = inttostr (cols, val, sizeof (val));
- bind_variable ("COLUMNS", v, 0);
-}
-
-/* **************************************************************** */
-/* */
-/* Printing variables and values */
-/* */
-/* **************************************************************** */
-
-/* Print LIST (a list of shell variables) to stdout in such a way that
- they can be read back in. */
-void
-print_var_list (list)
- register SHELL_VAR **list;
-{
- register int i;
- register SHELL_VAR *var;
-
- for (i = 0; list && (var = list[i]); i++)
- if (invisible_p (var) == 0)
- print_assignment (var);
-}
-
-/* Print LIST (a list of shell functions) to stdout in such a way that
- they can be read back in. */
-void
-print_func_list (list)
- register SHELL_VAR **list;
-{
- register int i;
- register SHELL_VAR *var;
-
- for (i = 0; list && (var = list[i]); i++)
- {
- printf ("%s ", var->name);
- print_var_function (var);
- printf ("\n");
- }
-}
-
-/* Print the value of a single SHELL_VAR. No newline is
- output, but the variable is printed in such a way that
- it can be read back in. */
-void
-print_assignment (var)
- SHELL_VAR *var;
-{
- if (var_isset (var) == 0)
- return;
-
- if (function_p (var))
- {
- printf ("%s", var->name);
- print_var_function (var);
- printf ("\n");
- }
-#if defined (ARRAY_VARS)
- else if (array_p (var))
- print_array_assignment (var, 0);
- else if (assoc_p (var))
- print_assoc_assignment (var, 0);
-#endif /* ARRAY_VARS */
- else
- {
- printf ("%s=", var->name);
- print_var_value (var, 1);
- printf ("\n");
- }
-}
-
-/* Print the value cell of VAR, a shell variable. Do not print
- the name, nor leading/trailing newline. If QUOTE is non-zero,
- and the value contains shell metacharacters, quote the value
- in such a way that it can be read back in. */
-void
-print_var_value (var, quote)
- SHELL_VAR *var;
- int quote;
-{
- char *t;
-
- if (var_isset (var) == 0)
- return;
-
- if (quote && posixly_correct == 0 && ansic_shouldquote (value_cell (var)))
- {
- t = ansic_quote (value_cell (var), 0, (int *)0);
- printf ("%s", t);
- free (t);
- }
- else if (quote && sh_contains_shell_metas (value_cell (var)))
- {
- t = sh_single_quote (value_cell (var));
- printf ("%s", t);
- free (t);
- }
- else
- printf ("%s", value_cell (var));
-}
-
-/* Print the function cell of VAR, a shell variable. Do not
- print the name, nor leading/trailing newline. */
-void
-print_var_function (var)
- SHELL_VAR *var;
-{
- char *x;
-
- if (function_p (var) && var_isset (var))
- {
- x = named_function_string ((char *)NULL, function_cell(var), FUNC_MULTILINE|FUNC_EXTERNAL);
- printf ("%s", x);
- }
-}
-
-/* **************************************************************** */
-/* */
-/* Dynamic Variables */
-/* */
-/* **************************************************************** */
-
-/* DYNAMIC VARIABLES
-
- These are variables whose values are generated anew each time they are
- referenced. These are implemented using a pair of function pointers
- in the struct variable: assign_func, which is called from bind_variable
- and, if arrays are compiled into the shell, some of the functions in
- arrayfunc.c, and dynamic_value, which is called from find_variable.
-
- assign_func is called from bind_variable_internal, if
- bind_variable_internal discovers that the variable being assigned to
- has such a function. The function is called as
- SHELL_VAR *temp = (*(entry->assign_func)) (entry, value, ind)
- and the (SHELL_VAR *)temp is returned as the value of bind_variable. It
- is usually ENTRY (self). IND is an index for an array variable, and
- unused otherwise.
-
- dynamic_value is called from find_variable_internal to return a `new'
- value for the specified dynamic varible. If this function is NULL,
- the variable is treated as a `normal' shell variable. If it is not,
- however, then this function is called like this:
- tempvar = (*(var->dynamic_value)) (var);
-
- Sometimes `tempvar' will replace the value of `var'. Other times, the
- shell will simply use the string value. Pretty object-oriented, huh?
-
- Be warned, though: if you `unset' a special variable, it loses its
- special meaning, even if you subsequently set it.
-
- The special assignment code would probably have been better put in
- subst.c: do_assignment_internal, in the same style as
- stupidly_hack_special_variables, but I wanted the changes as
- localized as possible. */
-
-#define INIT_DYNAMIC_VAR(var, val, gfunc, afunc) \
- do \
- { \
- v = bind_variable (var, (val), 0); \
- v->dynamic_value = gfunc; \
- v->assign_func = afunc; \
- } \
- while (0)
-
-#define INIT_DYNAMIC_ARRAY_VAR(var, gfunc, afunc) \
- do \
- { \
- v = make_new_array_variable (var); \
- v->dynamic_value = gfunc; \
- v->assign_func = afunc; \
- } \
- while (0)
-
-#define INIT_DYNAMIC_ASSOC_VAR(var, gfunc, afunc) \
- do \
- { \
- v = make_new_assoc_variable (var); \
- v->dynamic_value = gfunc; \
- v->assign_func = afunc; \
- } \
- while (0)
-
-static SHELL_VAR *
-null_assign (self, value, unused, key)
- SHELL_VAR *self;
- char *value;
- arrayind_t unused;
- char *key;
-{
- return (self);
-}
-
-#if defined (ARRAY_VARS)
-static SHELL_VAR *
-null_array_assign (self, value, ind, key)
- SHELL_VAR *self;
- char *value;
- arrayind_t ind;
- char *key;
-{
- return (self);
-}
-#endif
-
-/* Degenerate `dynamic_value' function; just returns what's passed without
- manipulation. */
-static SHELL_VAR *
-get_self (self)
- SHELL_VAR *self;
-{
- return (self);
-}
-
-#if defined (ARRAY_VARS)
-/* A generic dynamic array variable initializer. Initialize array variable
- NAME with dynamic value function GETFUNC and assignment function SETFUNC. */
-static SHELL_VAR *
-init_dynamic_array_var (name, getfunc, setfunc, attrs)
- char *name;
- sh_var_value_func_t *getfunc;
- sh_var_assign_func_t *setfunc;
- int attrs;
-{
- SHELL_VAR *v;
-
- v = find_variable (name);
- if (v)
- return (v);
- INIT_DYNAMIC_ARRAY_VAR (name, getfunc, setfunc);
- if (attrs)
- VSETATTR (v, attrs);
- return v;
-}
-
-static SHELL_VAR *
-init_dynamic_assoc_var (name, getfunc, setfunc, attrs)
- char *name;
- sh_var_value_func_t *getfunc;
- sh_var_assign_func_t *setfunc;
- int attrs;
-{
- SHELL_VAR *v;
-
- v = find_variable (name);
- if (v)
- return (v);
- INIT_DYNAMIC_ASSOC_VAR (name, getfunc, setfunc);
- if (attrs)
- VSETATTR (v, attrs);
- return v;
-}
-#endif
-
-/* The value of $SECONDS. This is the number of seconds since shell
- invocation, or, the number of seconds since the last assignment + the
- value of the last assignment. */
-static intmax_t seconds_value_assigned;
-
-static SHELL_VAR *
-assign_seconds (self, value, unused, key)
- SHELL_VAR *self;
- char *value;
- arrayind_t unused;
- char *key;
-{
- if (legal_number (value, &seconds_value_assigned) == 0)
- seconds_value_assigned = 0;
- shell_start_time = NOW;
- return (self);
-}
-
-static SHELL_VAR *
-get_seconds (var)
- SHELL_VAR *var;
-{
- time_t time_since_start;
- char *p;
-
- time_since_start = NOW - shell_start_time;
- p = itos(seconds_value_assigned + time_since_start);
-
- FREE (value_cell (var));
-
- VSETATTR (var, att_integer);
- var_setvalue (var, p);
- return (var);
-}
-
-static SHELL_VAR *
-init_seconds_var ()
-{
- SHELL_VAR *v;
-
- v = find_variable ("SECONDS");
- if (v)
- {
- if (legal_number (value_cell(v), &seconds_value_assigned) == 0)
- seconds_value_assigned = 0;
- }
- INIT_DYNAMIC_VAR ("SECONDS", (v ? value_cell (v) : (char *)NULL), get_seconds, assign_seconds);
- return v;
-}
-
-/* The random number seed. You can change this by setting RANDOM. */
-static unsigned long rseed = 1;
-static int last_random_value;
-static int seeded_subshell = 0;
-
-/* A linear congruential random number generator based on the example
- one in the ANSI C standard. This one isn't very good, but a more
- complicated one is overkill. */
-
-/* Returns a pseudo-random number between 0 and 32767. */
-static int
-brand ()
-{
- /* From "Random number generators: good ones are hard to find",
- Park and Miller, Communications of the ACM, vol. 31, no. 10,
- October 1988, p. 1195. filtered through FreeBSD */
- long h, l;
-
- /* Can't seed with 0. */
- if (rseed == 0)
- rseed = 123459876;
- h = rseed / 127773;
- l = rseed % 127773;
- rseed = 16807 * l - 2836 * h;
-#if 0
- if (rseed < 0)
- rseed += 0x7fffffff;
-#endif
- return ((unsigned int)(rseed & 32767)); /* was % 32768 */
-}
-
-/* Set the random number generator seed to SEED. */
-static void
-sbrand (seed)
- unsigned long seed;
-{
- rseed = seed;
- last_random_value = 0;
-}
-
-static void
-seedrand ()
-{
- struct timeval tv;
-
- gettimeofday (&tv, NULL);
- sbrand (tv.tv_sec ^ tv.tv_usec ^ getpid ());
-}
-
-static SHELL_VAR *
-assign_random (self, value, unused, key)
- SHELL_VAR *self;
- char *value;
- arrayind_t unused;
- char *key;
-{
- sbrand (strtoul (value, (char **)NULL, 10));
- if (subshell_environment)
- seeded_subshell = getpid ();
- return (self);
-}
-
-int
-get_random_number ()
-{
- int rv, pid;
-
- /* Reset for command and process substitution. */
- pid = getpid ();
- if (subshell_environment && seeded_subshell != pid)
- {
- seedrand ();
- seeded_subshell = pid;
- }
-
- do
- rv = brand ();
- while (rv == last_random_value);
- return rv;
-}
-
-static SHELL_VAR *
-get_random (var)
- SHELL_VAR *var;
-{
- int rv;
- char *p;
-
- rv = get_random_number ();
- last_random_value = rv;
- p = itos (rv);
-
- FREE (value_cell (var));
-
- VSETATTR (var, att_integer);
- var_setvalue (var, p);
- return (var);
-}
-
-static SHELL_VAR *
-assign_lineno (var, value, unused, key)
- SHELL_VAR *var;
- char *value;
- arrayind_t unused;
- char *key;
-{
- intmax_t new_value;
-
- if (value == 0 || *value == '\0' || legal_number (value, &new_value) == 0)
- new_value = 0;
- line_number = line_number_base = new_value;
- return var;
-}
-
-/* Function which returns the current line number. */
-static SHELL_VAR *
-get_lineno (var)
- SHELL_VAR *var;
-{
- char *p;
- int ln;
-
- ln = executing_line_number ();
- p = itos (ln);
- FREE (value_cell (var));
- var_setvalue (var, p);
- return (var);
-}
-
-static SHELL_VAR *
-assign_subshell (var, value, unused, key)
- SHELL_VAR *var;
- char *value;
- arrayind_t unused;
- char *key;
-{
- intmax_t new_value;
-
- if (value == 0 || *value == '\0' || legal_number (value, &new_value) == 0)
- new_value = 0;
- subshell_level = new_value;
- return var;
-}
-
-static SHELL_VAR *
-get_subshell (var)
- SHELL_VAR *var;
-{
- char *p;
-
- p = itos (subshell_level);
- FREE (value_cell (var));
- var_setvalue (var, p);
- return (var);
-}
-
-static SHELL_VAR *
-get_bashpid (var)
- SHELL_VAR *var;
-{
- int pid;
- char *p;
-
- pid = getpid ();
- p = itos (pid);
-
- FREE (value_cell (var));
- VSETATTR (var, att_integer|att_readonly);
- var_setvalue (var, p);
- return (var);
-}
-
-static SHELL_VAR *
-get_bash_command (var)
- SHELL_VAR *var;
-{
- char *p;
-
- if (the_printed_command_except_trap)
- p = savestring (the_printed_command_except_trap);
- else
- {
- p = (char *)xmalloc (1);
- p[0] = '\0';
- }
- FREE (value_cell (var));
- var_setvalue (var, p);
- return (var);
-}
-
-#if defined (HISTORY)
-static SHELL_VAR *
-get_histcmd (var)
- SHELL_VAR *var;
-{
- char *p;
-
- p = itos (history_number ());
- FREE (value_cell (var));
- var_setvalue (var, p);
- return (var);
-}
-#endif
-
-#if defined (READLINE)
-/* When this function returns, VAR->value points to malloced memory. */
-static SHELL_VAR *
-get_comp_wordbreaks (var)
- SHELL_VAR *var;
-{
- /* If we don't have anything yet, assign a default value. */
- if (rl_completer_word_break_characters == 0 && bash_readline_initialized == 0)
- enable_hostname_completion (perform_hostname_completion);
-
- FREE (value_cell (var));
- var_setvalue (var, savestring (rl_completer_word_break_characters));
-
- return (var);
-}
-
-/* When this function returns, rl_completer_word_break_characters points to
- malloced memory. */
-static SHELL_VAR *
-assign_comp_wordbreaks (self, value, unused, key)
- SHELL_VAR *self;
- char *value;
- arrayind_t unused;
- char *key;
-{
- if (rl_completer_word_break_characters &&
- rl_completer_word_break_characters != rl_basic_word_break_characters)
- free (rl_completer_word_break_characters);
-
- rl_completer_word_break_characters = savestring (value);
- return self;
-}
-#endif /* READLINE */
-
-#if defined (PUSHD_AND_POPD) && defined (ARRAY_VARS)
-static SHELL_VAR *
-assign_dirstack (self, value, ind, key)
- SHELL_VAR *self;
- char *value;
- arrayind_t ind;
- char *key;
-{
- set_dirstack_element (ind, 1, value);
- return self;
-}
-
-static SHELL_VAR *
-get_dirstack (self)
- SHELL_VAR *self;
-{
- ARRAY *a;
- WORD_LIST *l;
-
- l = get_directory_stack (0);
- a = array_from_word_list (l);
- array_dispose (array_cell (self));
- dispose_words (l);
- var_setarray (self, a);
- return self;
-}
-#endif /* PUSHD AND POPD && ARRAY_VARS */
-
-#if defined (ARRAY_VARS)
-/* We don't want to initialize the group set with a call to getgroups()
- unless we're asked to, but we only want to do it once. */
-static SHELL_VAR *
-get_groupset (self)
- SHELL_VAR *self;
-{
- register int i;
- int ng;
- ARRAY *a;
- static char **group_set = (char **)NULL;
-
- if (group_set == 0)
- {
- group_set = get_group_list (&ng);
- a = array_cell (self);
- for (i = 0; i < ng; i++)
- array_insert (a, i, group_set[i]);
- }
- return (self);
-}
-
-static SHELL_VAR *
-build_hashcmd (self)
- SHELL_VAR *self;
-{
- HASH_TABLE *h;
- int i;
- char *k, *v;
- BUCKET_CONTENTS *item;
-
- h = assoc_cell (self);
- if (h)
- assoc_dispose (h);
-
- if (hashed_filenames == 0 || HASH_ENTRIES (hashed_filenames) == 0)
- {
- var_setvalue (self, (char *)NULL);
- return self;
- }
-
- h = assoc_create (hashed_filenames->nbuckets);
- for (i = 0; i < hashed_filenames->nbuckets; i++)
- {
- for (item = hash_items (i, hashed_filenames); item; item = item->next)
- {
- k = savestring (item->key);
- v = pathdata(item)->path;
- assoc_insert (h, k, v);
- }
- }
-
- var_setvalue (self, (char *)h);
- return self;
-}
-
-static SHELL_VAR *
-get_hashcmd (self)
- SHELL_VAR *self;
-{
- build_hashcmd (self);
- return (self);
-}
-
-static SHELL_VAR *
-assign_hashcmd (self, value, ind, key)
- SHELL_VAR *self;
- char *value;
- arrayind_t ind;
- char *key;
-{
- phash_insert (key, value, 0, 0);
- return (build_hashcmd (self));
-}
-
-#if defined (ALIAS)
-static SHELL_VAR *
-build_aliasvar (self)
- SHELL_VAR *self;
-{
- HASH_TABLE *h;
- int i;
- char *k, *v;
- BUCKET_CONTENTS *item;
-
- h = assoc_cell (self);
- if (h)
- assoc_dispose (h);
-
- if (aliases == 0 || HASH_ENTRIES (aliases) == 0)
- {
- var_setvalue (self, (char *)NULL);
- return self;
- }
-
- h = assoc_create (aliases->nbuckets);
- for (i = 0; i < aliases->nbuckets; i++)
- {
- for (item = hash_items (i, aliases); item; item = item->next)
- {
- k = savestring (item->key);
- v = ((alias_t *)(item->data))->value;
- assoc_insert (h, k, v);
- }
- }
-
- var_setvalue (self, (char *)h);
- return self;
-}
-
-static SHELL_VAR *
-get_aliasvar (self)
- SHELL_VAR *self;
-{
- build_aliasvar (self);
- return (self);
-}
-
-static SHELL_VAR *
-assign_aliasvar (self, value, ind, key)
- SHELL_VAR *self;
- char *value;
- arrayind_t ind;
- char *key;
-{
- add_alias (key, value);
- return (build_aliasvar (self));
-}
-#endif /* ALIAS */
-
-#endif /* ARRAY_VARS */
-
-/* If ARRAY_VARS is not defined, this just returns the name of any
- currently-executing function. If we have arrays, it's a call stack. */
-static SHELL_VAR *
-get_funcname (self)
- SHELL_VAR *self;
-{
-#if ! defined (ARRAY_VARS)
- char *t;
- if (variable_context && this_shell_function)
- {
- FREE (value_cell (self));
- t = savestring (this_shell_function->name);
- var_setvalue (self, t);
- }
-#endif
- return (self);
-}
-
-void
-make_funcname_visible (on_or_off)
- int on_or_off;
-{
- SHELL_VAR *v;
-
- v = find_variable ("FUNCNAME");
- if (v == 0 || v->dynamic_value == 0)
- return;
-
- if (on_or_off)
- VUNSETATTR (v, att_invisible);
- else
- VSETATTR (v, att_invisible);
-}
-
-static SHELL_VAR *
-init_funcname_var ()
-{
- SHELL_VAR *v;
-
- v = find_variable ("FUNCNAME");
- if (v)
- return v;
-#if defined (ARRAY_VARS)
- INIT_DYNAMIC_ARRAY_VAR ("FUNCNAME", get_funcname, null_array_assign);
-#else
- INIT_DYNAMIC_VAR ("FUNCNAME", (char *)NULL, get_funcname, null_assign);
-#endif
- VSETATTR (v, att_invisible|att_noassign);
- return v;
-}
-
-static void
-initialize_dynamic_variables ()
-{
- SHELL_VAR *v;
-
- v = init_seconds_var ();
-
- INIT_DYNAMIC_VAR ("BASH_COMMAND", (char *)NULL, get_bash_command, (sh_var_assign_func_t *)NULL);
- INIT_DYNAMIC_VAR ("BASH_SUBSHELL", (char *)NULL, get_subshell, assign_subshell);
-
- INIT_DYNAMIC_VAR ("RANDOM", (char *)NULL, get_random, assign_random);
- VSETATTR (v, att_integer);
- INIT_DYNAMIC_VAR ("LINENO", (char *)NULL, get_lineno, assign_lineno);
- VSETATTR (v, att_integer);
-
- INIT_DYNAMIC_VAR ("BASHPID", (char *)NULL, get_bashpid, null_assign);
- VSETATTR (v, att_integer|att_readonly);
-
-#if defined (HISTORY)
- INIT_DYNAMIC_VAR ("HISTCMD", (char *)NULL, get_histcmd, (sh_var_assign_func_t *)NULL);
- VSETATTR (v, att_integer);
-#endif
-
-#if defined (READLINE)
- INIT_DYNAMIC_VAR ("COMP_WORDBREAKS", (char *)NULL, get_comp_wordbreaks, assign_comp_wordbreaks);
-#endif
-
-#if defined (PUSHD_AND_POPD) && defined (ARRAY_VARS)
- v = init_dynamic_array_var ("DIRSTACK", get_dirstack, assign_dirstack, 0);
-#endif /* PUSHD_AND_POPD && ARRAY_VARS */
-
-#if defined (ARRAY_VARS)
- v = init_dynamic_array_var ("GROUPS", get_groupset, null_array_assign, att_noassign);
-
-# if defined (DEBUGGER)
- v = init_dynamic_array_var ("BASH_ARGC", get_self, null_array_assign, att_noassign|att_nounset);
- v = init_dynamic_array_var ("BASH_ARGV", get_self, null_array_assign, att_noassign|att_nounset);
-# endif /* DEBUGGER */
- v = init_dynamic_array_var ("BASH_SOURCE", get_self, null_array_assign, att_noassign|att_nounset);
- v = init_dynamic_array_var ("BASH_LINENO", get_self, null_array_assign, att_noassign|att_nounset);
-
- v = init_dynamic_assoc_var ("BASH_CMDS", get_hashcmd, assign_hashcmd, att_nofree);
-# if defined (ALIAS)
- v = init_dynamic_assoc_var ("BASH_ALIASES", get_aliasvar, assign_aliasvar, att_nofree);
-# endif
-#endif
-
- v = init_funcname_var ();
-}
-
-/* **************************************************************** */
-/* */
-/* Retrieving variables and values */
-/* */
-/* **************************************************************** */
-
-/* How to get a pointer to the shell variable or function named NAME.
- HASHED_VARS is a pointer to the hash table containing the list
- of interest (either variables or functions). */
-
-static SHELL_VAR *
-hash_lookup (name, hashed_vars)
- const char *name;
- HASH_TABLE *hashed_vars;
-{
- BUCKET_CONTENTS *bucket;
-
- bucket = hash_search (name, hashed_vars, 0);
- /* If we find the name in HASHED_VARS, set LAST_TABLE_SEARCHED to that
- table. */
- if (bucket)
- last_table_searched = hashed_vars;
- return (bucket ? (SHELL_VAR *)bucket->data : (SHELL_VAR *)NULL);
-}
-
-SHELL_VAR *
-var_lookup (name, vcontext)
- const char *name;
- VAR_CONTEXT *vcontext;
-{
- VAR_CONTEXT *vc;
- SHELL_VAR *v;
-
- v = (SHELL_VAR *)NULL;
- for (vc = vcontext; vc; vc = vc->down)
- if (v = hash_lookup (name, vc->table))
- break;
-
- return v;
-}
-
-/* Look up the variable entry named NAME. If SEARCH_TEMPENV is non-zero,
- then also search the temporarily built list of exported variables.
- The lookup order is:
- temporary_env
- shell_variables list
-*/
-
-SHELL_VAR *
-find_variable_internal (name, flags)
- const char *name;
- int flags;
-{
- SHELL_VAR *var;
- int search_tempenv, force_tempenv;
- VAR_CONTEXT *vc;
-
- var = (SHELL_VAR *)NULL;
-
- force_tempenv = (flags & FV_FORCETEMPENV);
-
- /* If explicitly requested, first look in the temporary environment for
- the variable. This allows constructs such as "foo=x eval 'echo $foo'"
- to get the `exported' value of $foo. This happens if we are executing
- a function or builtin, or if we are looking up a variable in a
- "subshell environment". */
- search_tempenv = force_tempenv || (expanding_redir == 0 && subshell_environment);
-
- if (search_tempenv && temporary_env)
- var = hash_lookup (name, temporary_env);
-
- if (var == 0)
- {
- if ((flags & FV_SKIPINVISIBLE) == 0)
- var = var_lookup (name, shell_variables);
- else
- {
- /* essentially var_lookup expanded inline so we can check for
- att_invisible */
- for (vc = shell_variables; vc; vc = vc->down)
- {
- var = hash_lookup (name, vc->table);
- if (var && invisible_p (var))
- var = 0;
- if (var)
- break;
- }
- }
- }
-
- if (var == 0)
- return ((SHELL_VAR *)NULL);
-
- return (var->dynamic_value ? (*(var->dynamic_value)) (var) : var);
-}
-
-/* Look up and resolve the chain of nameref variables starting at V all the
- way to NULL or non-nameref. */
-SHELL_VAR *
-find_variable_nameref (v)
- SHELL_VAR *v;
-{
- int level, flags;
- char *newname;
- SHELL_VAR *orig, *oldv;
-
- level = 0;
- orig = v;
- while (v && nameref_p (v))
- {
- level++;
- if (level > NAMEREF_MAX)
- return ((SHELL_VAR *)0); /* error message here? */
- newname = nameref_cell (v);
- if (newname == 0 || *newname == '\0')
- return ((SHELL_VAR *)0);
- oldv = v;
- flags = 0;
- if (expanding_redir == 0 && (assigning_in_environment || executing_builtin))
- flags |= FV_FORCETEMPENV;
- v = find_variable_internal (newname, flags);
- if (v == orig || v == oldv)
- {
- internal_warning (_("%s: circular name reference"), orig->name);
- return ((SHELL_VAR *)0);
- }
- }
- return v;
-}
-
-/* Resolve the chain of nameref variables for NAME. XXX - could change later */
-SHELL_VAR *
-find_variable_last_nameref (name)
- const char *name;
-{
- SHELL_VAR *v, *nv;
- char *newname;
- int level, flags;
-
- nv = v = find_variable_noref (name);
- level = 0;
- while (v && nameref_p (v))
- {
- level++;
- if (level > NAMEREF_MAX)
- return ((SHELL_VAR *)0); /* error message here? */
- newname = nameref_cell (v);
- if (newname == 0 || *newname == '\0')
- return ((SHELL_VAR *)0);
- nv = v;
- flags = 0;
- if (expanding_redir == 0 && (assigning_in_environment || executing_builtin))
- flags |= FV_FORCETEMPENV;
- v = find_variable_internal (newname, flags);
- }
- return nv;
-}
-
-/* Resolve the chain of nameref variables for NAME. XXX - could change later */
-SHELL_VAR *
-find_global_variable_last_nameref (name)
- const char *name;
-{
- SHELL_VAR *v, *nv;
- char *newname;
- int level;
-
- nv = v = find_global_variable_noref (name);
- level = 0;
- while (v && nameref_p (v))
- {
- level++;
- if (level > NAMEREF_MAX)
- return ((SHELL_VAR *)0); /* error message here? */
- newname = nameref_cell (v);
- if (newname == 0 || *newname == '\0')
- return ((SHELL_VAR *)0);
- nv = v;
- v = find_global_variable_noref (newname);
- }
- return nv;
-}
-
-static SHELL_VAR *
-find_nameref_at_context (v, vc)
- SHELL_VAR *v;
- VAR_CONTEXT *vc;
-{
- SHELL_VAR *nv, *nv2;
- VAR_CONTEXT *nvc;
- char *newname;
- int level;
-
- nv = v;
- level = 1;
- while (nv && nameref_p (nv))
- {
- level++;
- if (level > NAMEREF_MAX)
- return ((SHELL_VAR *)NULL);
- newname = nameref_cell (nv);
- if (newname == 0 || *newname == '\0')
- return ((SHELL_VAR *)NULL);
- nv2 = hash_lookup (newname, vc->table);
- if (nv2 == 0)
- break;
- nv = nv2;
- }
- return nv;
-}
-
-/* Do nameref resolution from the VC, which is the local context for some
- function or builtin, `up' the chain to the global variables context. If
- NVCP is not NULL, return the variable context where we finally ended the
- nameref resolution (so the bind_variable_internal can use the correct
- variable context and hash table). */
-static SHELL_VAR *
-find_variable_nameref_context (v, vc, nvcp)
- SHELL_VAR *v;
- VAR_CONTEXT *vc;
- VAR_CONTEXT **nvcp;
-{
- SHELL_VAR *nv, *nv2;
- VAR_CONTEXT *nvc;
-
- /* Look starting at the current context all the way `up' */
- for (nv = v, nvc = vc; nvc; nvc = nvc->down)
- {
- nv2 = find_nameref_at_context (nv, nvc);
- if (nv2 == 0)
- continue;
- nv = nv2;
- if (*nvcp)
- *nvcp = nvc;
- if (nameref_p (nv) == 0)
- break;
- }
- return (nameref_p (nv) ? (SHELL_VAR *)NULL : nv);
-}
-
-/* Do nameref resolution from the VC, which is the local context for some
- function or builtin, `up' the chain to the global variables context. If
- NVCP is not NULL, return the variable context where we finally ended the
- nameref resolution (so the bind_variable_internal can use the correct
- variable context and hash table). */
-static SHELL_VAR *
-find_variable_last_nameref_context (v, vc, nvcp)
- SHELL_VAR *v;
- VAR_CONTEXT *vc;
- VAR_CONTEXT **nvcp;
-{
- SHELL_VAR *nv, *nv2;
- VAR_CONTEXT *nvc;
-
- /* Look starting at the current context all the way `up' */
- for (nv = v, nvc = vc; nvc; nvc = nvc->down)
- {
- nv2 = find_nameref_at_context (nv, nvc);
- if (nv2 == 0)
- continue;
- nv = nv2;
- if (*nvcp)
- *nvcp = nvc;
- }
- return (nameref_p (nv) ? nv : (SHELL_VAR *)NULL);
-}
-
-/* Find a variable, forcing a search of the temporary environment first */
-SHELL_VAR *
-find_variable_tempenv (name)
- const char *name;
-{
- SHELL_VAR *var;
-
- var = find_variable_internal (name, FV_FORCETEMPENV);
- if (var && nameref_p (var))
- var = find_variable_nameref (var);
- return (var);
-}
-
-/* Find a variable, not forcing a search of the temporary environment first */
-SHELL_VAR *
-find_variable_notempenv (name)
- const char *name;
-{
- SHELL_VAR *var;
-
- var = find_variable_internal (name, 0);
- if (var && nameref_p (var))
- var = find_variable_nameref (var);
- return (var);
-}
-
-SHELL_VAR *
-find_global_variable (name)
- const char *name;
-{
- SHELL_VAR *var;
-
- var = var_lookup (name, global_variables);
- if (var && nameref_p (var))
- var = find_variable_nameref (var);
-
- if (var == 0)
- return ((SHELL_VAR *)NULL);
-
- return (var->dynamic_value ? (*(var->dynamic_value)) (var) : var);
-}
-
-SHELL_VAR *
-find_global_variable_noref (name)
- const char *name;
-{
- SHELL_VAR *var;
-
- var = var_lookup (name, global_variables);
-
- if (var == 0)
- return ((SHELL_VAR *)NULL);
-
- return (var->dynamic_value ? (*(var->dynamic_value)) (var) : var);
-}
-
-SHELL_VAR *
-find_shell_variable (name)
- const char *name;
-{
- SHELL_VAR *var;
-
- var = var_lookup (name, shell_variables);
- if (var && nameref_p (var))
- var = find_variable_nameref (var);
-
- if (var == 0)
- return ((SHELL_VAR *)NULL);
-
- return (var->dynamic_value ? (*(var->dynamic_value)) (var) : var);
-}
-
-/* Look up the variable entry named NAME. Returns the entry or NULL. */
-SHELL_VAR *
-find_variable (name)
- const char *name;
-{
- SHELL_VAR *v;
- int flags;
-
- last_table_searched = 0;
- flags = 0;
- if (expanding_redir == 0 && (assigning_in_environment || executing_builtin))
- flags |= FV_FORCETEMPENV;
- v = find_variable_internal (name, flags);
- if (v && nameref_p (v))
- v = find_variable_nameref (v);
- return v;
-}
-
-/* Find the first instance of NAME in the variable context chain; return first
- one found without att_invisible set; return 0 if no non-invisible instances
- found. */
-SHELL_VAR *
-find_variable_no_invisible (name)
- const char *name;
-{
- SHELL_VAR *v;
- int flags;
-
- last_table_searched = 0;
- flags = FV_SKIPINVISIBLE;
- if (expanding_redir == 0 && (assigning_in_environment || executing_builtin))
- flags |= FV_FORCETEMPENV;
- v = find_variable_internal (name, flags);
- if (v && nameref_p (v))
- v = find_variable_nameref (v);
- return v;
-}
-
-/* Find the first instance of NAME in the variable context chain; return first
- one found even if att_invisible set. */
-SHELL_VAR *
-find_variable_for_assignment (name)
- const char *name;
-{
- SHELL_VAR *v;
- int flags;
-
- last_table_searched = 0;
- flags = 0;
- if (expanding_redir == 0 && (assigning_in_environment || executing_builtin))
- flags |= FV_FORCETEMPENV;
- v = find_variable_internal (name, flags);
- if (v && nameref_p (v))
- v = find_variable_nameref (v);
- return v;
-}
-
-SHELL_VAR *
-find_variable_noref (name)
- const char *name;
-{
- SHELL_VAR *v;
- int flags;
-
- flags = 0;
- if (expanding_redir == 0 && (assigning_in_environment || executing_builtin))
- flags |= FV_FORCETEMPENV;
- v = find_variable_internal (name, flags);
- return v;
-}
-
-/* Look up the function entry whose name matches STRING.
- Returns the entry or NULL. */
-SHELL_VAR *
-find_function (name)
- const char *name;
-{
- return (hash_lookup (name, shell_functions));
-}
-
-/* Find the function definition for the shell function named NAME. Returns
- the entry or NULL. */
-FUNCTION_DEF *
-find_function_def (name)
- const char *name;
-{
-#if defined (DEBUGGER)
- return ((FUNCTION_DEF *)hash_lookup (name, shell_function_defs));
-#else
- return ((FUNCTION_DEF *)0);
-#endif
-}
-
-/* Return the value of VAR. VAR is assumed to have been the result of a
- lookup without any subscript, if arrays are compiled into the shell. */
-char *
-get_variable_value (var)
- SHELL_VAR *var;
-{
- if (var == 0)
- return ((char *)NULL);
-#if defined (ARRAY_VARS)
- else if (array_p (var))
- return (array_reference (array_cell (var), 0));
- else if (assoc_p (var))
- return (assoc_reference (assoc_cell (var), "0"));
-#endif
- else
- return (value_cell (var));
-}
-
-/* Return the string value of a variable. Return NULL if the variable
- doesn't exist. Don't cons a new string. This is a potential memory
- leak if the variable is found in the temporary environment. Since
- functions and variables have separate name spaces, returns NULL if
- var_name is a shell function only. */
-char *
-get_string_value (var_name)
- const char *var_name;
-{
- SHELL_VAR *var;
-
- var = find_variable (var_name);
- return ((var) ? get_variable_value (var) : (char *)NULL);
-}
-
-/* This is present for use by the tilde and readline libraries. */
-char *
-sh_get_env_value (v)
- const char *v;
-{
- return get_string_value (v);
-}
-
-/* **************************************************************** */
-/* */
-/* Creating and setting variables */
-/* */
-/* **************************************************************** */
-
-/* Set NAME to VALUE if NAME has no value. */
-SHELL_VAR *
-set_if_not (name, value)
- char *name, *value;
-{
- SHELL_VAR *v;
-
- if (shell_variables == 0)
- create_variable_tables ();
-
- v = find_variable (name);
- if (v == 0)
- v = bind_variable_internal (name, value, global_variables->table, HASH_NOSRCH, 0);
- return (v);
-}
-
-/* Create a local variable referenced by NAME. */
-SHELL_VAR *
-make_local_variable (name)
- const char *name;
-{
- SHELL_VAR *new_var, *old_var;
- VAR_CONTEXT *vc;
- int was_tmpvar;
- char *tmp_value;
-
- /* local foo; local foo; is a no-op. */
- old_var = find_variable (name);
- if (old_var && local_p (old_var) && old_var->context == variable_context)
- return (old_var);
-
- was_tmpvar = old_var && tempvar_p (old_var);
- /* If we're making a local variable in a shell function, the temporary env
- has already been merged into the function's variable context stack. We
- can assume that a temporary var in the same context appears in the same
- VAR_CONTEXT and can safely be returned without creating a new variable
- (which results in duplicate names in the same VAR_CONTEXT->table */
- /* We can't just test tmpvar_p because variables in the temporary env given
- to a shell function appear in the function's local variable VAR_CONTEXT
- but retain their tempvar attribute. We want temporary variables that are
- found in temporary_env, hence the test for last_table_searched, which is
- set in hash_lookup and only (so far) checked here. */
- if (was_tmpvar && old_var->context == variable_context && last_table_searched != temporary_env)
- {
- VUNSETATTR (old_var, att_invisible); /* XXX */
- return (old_var);
- }
- if (was_tmpvar)
- tmp_value = value_cell (old_var);
-
- for (vc = shell_variables; vc; vc = vc->down)
- if (vc_isfuncenv (vc) && vc->scope == variable_context)
- break;
-
- if (vc == 0)
- {
- internal_error (_("make_local_variable: no function context at current scope"));
- return ((SHELL_VAR *)NULL);
- }
- else if (vc->table == 0)
- vc->table = hash_create (TEMPENV_HASH_BUCKETS);
-
- /* Since this is called only from the local/declare/typeset code, we can
- call builtin_error here without worry (of course, it will also work
- for anything that sets this_command_name). Variables with the `noassign'
- attribute may not be made local. The test against old_var's context
- level is to disallow local copies of readonly global variables (since I
- believe that this could be a security hole). Readonly copies of calling
- function local variables are OK. */
- if (old_var && (noassign_p (old_var) ||
- (readonly_p (old_var) && old_var->context == 0)))
- {
- if (readonly_p (old_var))
- sh_readonly (name);
- else if (noassign_p (old_var))
- builtin_error (_("%s: variable may not be assigned value"), name);
-#if 0
- /* Let noassign variables through with a warning */
- if (readonly_p (old_var))
-#endif
- return ((SHELL_VAR *)NULL);
- }
-
- if (old_var == 0)
- new_var = make_new_variable (name, vc->table);
- else
- {
- new_var = make_new_variable (name, vc->table);
-
- /* If we found this variable in one of the temporary environments,
- inherit its value. Watch to see if this causes problems with
- things like `x=4 local x'. XXX - see above for temporary env
- variables with the same context level as variable_context */
- /* XXX - we should only do this if the variable is not an array. */
- if (was_tmpvar)
- var_setvalue (new_var, savestring (tmp_value));
-
- new_var->attributes = exported_p (old_var) ? att_exported : 0;
- }
-
- vc->flags |= VC_HASLOCAL;
-
- new_var->context = variable_context;
- VSETATTR (new_var, att_local);
-
- if (ifsname (name))
- setifs (new_var);
-
- if (was_tmpvar == 0 && no_invisible_vars == 0)
- VSETATTR (new_var, att_invisible); /* XXX */
- return (new_var);
-}
-
-/* Create a new shell variable with name NAME. */
-static SHELL_VAR *
-new_shell_variable (name)
- const char *name;
-{
- SHELL_VAR *entry;
-
- entry = (SHELL_VAR *)xmalloc (sizeof (SHELL_VAR));
-
- entry->name = savestring (name);
- var_setvalue (entry, (char *)NULL);
- CLEAR_EXPORTSTR (entry);
-
- entry->dynamic_value = (sh_var_value_func_t *)NULL;
- entry->assign_func = (sh_var_assign_func_t *)NULL;
-
- entry->attributes = 0;
-
- /* Always assume variables are to be made at toplevel!
- make_local_variable has the responsibility of changing the
- variable context. */
- entry->context = 0;
-
- return (entry);
-}
-
-/* Create a new shell variable with name NAME and add it to the hash table
- TABLE. */
-static SHELL_VAR *
-make_new_variable (name, table)
- const char *name;
- HASH_TABLE *table;
-{
- SHELL_VAR *entry;
- BUCKET_CONTENTS *elt;
-
- entry = new_shell_variable (name);
-
- /* Make sure we have a shell_variables hash table to add to. */
- if (shell_variables == 0)
- create_variable_tables ();
-
- elt = hash_insert (savestring (name), table, HASH_NOSRCH);
- elt->data = (PTR_T)entry;
-
- return entry;
-}
-
-#if defined (ARRAY_VARS)
-SHELL_VAR *
-make_new_array_variable (name)
- char *name;
-{
- SHELL_VAR *entry;
- ARRAY *array;
-
- entry = make_new_variable (name, global_variables->table);
- array = array_create ();
-
- var_setarray (entry, array);
- VSETATTR (entry, att_array);
- return entry;
-}
-
-SHELL_VAR *
-make_local_array_variable (name, assoc_ok)
- char *name;
- int assoc_ok;
-{
- SHELL_VAR *var;
- ARRAY *array;
-
- var = make_local_variable (name);
- if (var == 0 || array_p (var) || (assoc_ok && assoc_p (var)))
- return var;
-
- array = array_create ();
-
- dispose_variable_value (var);
- var_setarray (var, array);
- VSETATTR (var, att_array);
- return var;
-}
-
-SHELL_VAR *
-make_new_assoc_variable (name)
- char *name;
-{
- SHELL_VAR *entry;
- HASH_TABLE *hash;
-
- entry = make_new_variable (name, global_variables->table);
- hash = assoc_create (0);
-
- var_setassoc (entry, hash);
- VSETATTR (entry, att_assoc);
- return entry;
-}
-
-SHELL_VAR *
-make_local_assoc_variable (name)
- char *name;
-{
- SHELL_VAR *var;
- HASH_TABLE *hash;
-
- var = make_local_variable (name);
- if (var == 0 || assoc_p (var))
- return var;
-
- dispose_variable_value (var);
- hash = assoc_create (0);
-
- var_setassoc (var, hash);
- VSETATTR (var, att_assoc);
- return var;
-}
-#endif
-
-char *
-make_variable_value (var, value, flags)
- SHELL_VAR *var;
- char *value;
- int flags;
-{
- char *retval, *oval;
- intmax_t lval, rval;
- int expok, olen, op;
-
- /* If this variable has had its type set to integer (via `declare -i'),
- then do expression evaluation on it and store the result. The
- functions in expr.c (evalexp()) and bind_int_variable() are responsible
- for turning off the integer flag if they don't want further
- evaluation done. */
- if (integer_p (var))
- {
- if (flags & ASS_APPEND)
- {
- oval = value_cell (var);
- lval = evalexp (oval, &expok); /* ksh93 seems to do this */
- if (expok == 0)
- {
- top_level_cleanup ();
- jump_to_top_level (DISCARD);
- }
- }
- rval = evalexp (value, &expok);
- if (expok == 0)
- {
- top_level_cleanup ();
- jump_to_top_level (DISCARD);
- }
- /* This can be fooled if the variable's value changes while evaluating
- `rval'. We can change it if we move the evaluation of lval to here. */
- if (flags & ASS_APPEND)
- rval += lval;
- retval = itos (rval);
- }
-#if defined (CASEMOD_ATTRS)
- else if (capcase_p (var) || uppercase_p (var) || lowercase_p (var))
- {
- if (flags & ASS_APPEND)
- {
- oval = get_variable_value (var);
- if (oval == 0) /* paranoia */
- oval = "";
- olen = STRLEN (oval);
- retval = (char *)xmalloc (olen + (value ? STRLEN (value) : 0) + 1);
- strcpy (retval, oval);
- if (value)
- strcpy (retval+olen, value);
- }
- else if (*value)
- retval = savestring (value);
- else
- {
- retval = (char *)xmalloc (1);
- retval[0] = '\0';
- }
- op = capcase_p (var) ? CASE_CAPITALIZE
- : (uppercase_p (var) ? CASE_UPPER : CASE_LOWER);
- oval = sh_modcase (retval, (char *)0, op);
- free (retval);
- retval = oval;
- }
-#endif /* CASEMOD_ATTRS */
- else if (value)
- {
- if (flags & ASS_APPEND)
- {
- oval = get_variable_value (var);
- if (oval == 0) /* paranoia */
- oval = "";
- olen = STRLEN (oval);
- retval = (char *)xmalloc (olen + (value ? STRLEN (value) : 0) + 1);
- strcpy (retval, oval);
- if (value)
- strcpy (retval+olen, value);
- }
- else if (*value)
- retval = savestring (value);
- else
- {
- retval = (char *)xmalloc (1);
- retval[0] = '\0';
- }
- }
- else
- retval = (char *)NULL;
-
- return retval;
-}
-
-/* Bind a variable NAME to VALUE in the HASH_TABLE TABLE, which may be the
- temporary environment (but usually is not). */
-static SHELL_VAR *
-bind_variable_internal (name, value, table, hflags, aflags)
- const char *name;
- char *value;
- HASH_TABLE *table;
- int hflags, aflags;
-{
- char *newval;
- SHELL_VAR *entry;
-
- entry = (hflags & HASH_NOSRCH) ? (SHELL_VAR *)NULL : hash_lookup (name, table);
- /* Follow the nameref chain here if this is the global variables table */
- if (entry && nameref_p (entry) && (invisible_p (entry) == 0) && table == global_variables->table)
- {
- entry = find_global_variable (entry->name);
- /* Let's see if we have a nameref referencing a variable that hasn't yet
- been created. */
- if (entry == 0)
- entry = find_variable_last_nameref (name); /* XXX */
- if (entry == 0) /* just in case */
- return (entry);
- }
-
- /* The first clause handles `declare -n ref; ref=x;' */
- if (entry && invisible_p (entry) && nameref_p (entry))
- goto assign_value;
- else if (entry && nameref_p (entry))
- {
- newval = nameref_cell (entry);
-#if defined (ARRAY_VARS)
- /* declare -n foo=x[2] */
- if (valid_array_reference (newval))
- /* XXX - should it be aflags? */
- entry = assign_array_element (newval, make_variable_value (entry, value, 0), aflags);
- else
-#endif
- {
- entry = make_new_variable (newval, table);
- var_setvalue (entry, make_variable_value (entry, value, 0));
- }
- }
- else if (entry == 0)
- {
- entry = make_new_variable (name, table);
- var_setvalue (entry, make_variable_value (entry, value, 0)); /* XXX */
- }
- else if (entry->assign_func) /* array vars have assign functions now */
- {
- INVALIDATE_EXPORTSTR (entry);
- newval = (aflags & ASS_APPEND) ? make_variable_value (entry, value, aflags) : value;
- if (assoc_p (entry))
- entry = (*(entry->assign_func)) (entry, newval, -1, savestring ("0"));
- else if (array_p (entry))
- entry = (*(entry->assign_func)) (entry, newval, 0, 0);
- else
- entry = (*(entry->assign_func)) (entry, newval, -1, 0);
- if (newval != value)
- free (newval);
- return (entry);
- }
- else
- {
-assign_value:
- if ((readonly_p (entry) && (aflags & ASS_FORCE) == 0) || noassign_p (entry))
- {
- if (readonly_p (entry))
- err_readonly (name);
- return (entry);
- }
-
- /* Variables which are bound are visible. */
- VUNSETATTR (entry, att_invisible);
-
-#if defined (ARRAY_VARS)
- if (assoc_p (entry) || array_p (entry))
- newval = make_array_variable_value (entry, 0, "0", value, aflags);
- else
-#endif
-
- newval = make_variable_value (entry, value, aflags); /* XXX */
-
- /* Invalidate any cached export string */
- INVALIDATE_EXPORTSTR (entry);
-
-#if defined (ARRAY_VARS)
- /* XXX -- this bears looking at again -- XXX */
- /* If an existing array variable x is being assigned to with x=b or
- `read x' or something of that nature, silently convert it to
- x[0]=b or `read x[0]'. */
- if (assoc_p (entry))
- {
- assoc_insert (assoc_cell (entry), savestring ("0"), newval);
- free (newval);
- }
- else if (array_p (entry))
- {
- array_insert (array_cell (entry), 0, newval);
- free (newval);
- }
- else
-#endif
- {
- FREE (value_cell (entry));
- var_setvalue (entry, newval);
- }
- }
-
- if (mark_modified_vars)
- VSETATTR (entry, att_exported);
-
- if (exported_p (entry))
- array_needs_making = 1;
-
- return (entry);
-}
-
-/* Bind a variable NAME to VALUE. This conses up the name
- and value strings. If we have a temporary environment, we bind there
- first, then we bind into shell_variables. */
-
-SHELL_VAR *
-bind_variable (name, value, flags)
- const char *name;
- char *value;
- int flags;
-{
- SHELL_VAR *v, *nv;
- VAR_CONTEXT *vc, *nvc;
- int level;
-
- if (shell_variables == 0)
- create_variable_tables ();
-
- /* If we have a temporary environment, look there first for the variable,
- and, if found, modify the value there before modifying it in the
- shell_variables table. This allows sourced scripts to modify values
- given to them in a temporary environment while modifying the variable
- value that the caller sees. */
- if (temporary_env && value) /* XXX - can value be null here? */
- bind_tempenv_variable (name, value);
-
- /* XXX -- handle local variables here. */
- for (vc = shell_variables; vc; vc = vc->down)
- {
- if (vc_isfuncenv (vc) || vc_isbltnenv (vc))
- {
- v = hash_lookup (name, vc->table);
- nvc = vc;
- if (v && nameref_p (v))
- {
- nv = find_variable_nameref_context (v, vc, &nvc);
- if (nv == 0)
- {
- nv = find_variable_last_nameref_context (v, vc, &nvc);
- if (nv && nameref_p (nv))
- {
- /* If this nameref variable doesn't have a value yet,
- set the value. Otherwise, assign using the value as
- normal. */
- if (nameref_cell (nv) == 0)
- return (bind_variable_internal (nv->name, value, nvc->table, 0, flags));
-#if defined (ARRAY_VARS)
- else if (valid_array_reference (nameref_cell (nv)))
- return (assign_array_element (nameref_cell (nv), value, flags));
- else
-#endif
- return (bind_variable_internal (nameref_cell (nv), value, nvc->table, 0, flags));
- }
- else
- v = nv;
- }
- else
- v = nv;
- }
- if (v)
- return (bind_variable_internal (v->name, value, nvc->table, 0, flags));
- }
- }
- /* bind_variable_internal will handle nameref resolution in this case */
- return (bind_variable_internal (name, value, global_variables->table, 0, flags));
-}
-
-SHELL_VAR *
-bind_global_variable (name, value, flags)
- const char *name;
- char *value;
- int flags;
-{
- SHELL_VAR *v, *nv;
- VAR_CONTEXT *vc, *nvc;
- int level;
-
- if (shell_variables == 0)
- create_variable_tables ();
-
- /* bind_variable_internal will handle nameref resolution in this case */
- return (bind_variable_internal (name, value, global_variables->table, 0, flags));
-}
-
-/* Make VAR, a simple shell variable, have value VALUE. Once assigned a
- value, variables are no longer invisible. This is a duplicate of part
- of the internals of bind_variable. If the variable is exported, or
- all modified variables should be exported, mark the variable for export
- and note that the export environment needs to be recreated. */
-SHELL_VAR *
-bind_variable_value (var, value, aflags)
- SHELL_VAR *var;
- char *value;
- int aflags;
-{
- char *t;
- int invis;
-
- invis = invisible_p (var);
- VUNSETATTR (var, att_invisible);
-
- if (var->assign_func)
- {
- /* If we're appending, we need the old value, so use
- make_variable_value */
- t = (aflags & ASS_APPEND) ? make_variable_value (var, value, aflags) : value;
- (*(var->assign_func)) (var, t, -1, 0);
- if (t != value && t)
- free (t);
- }
- else
- {
- t = make_variable_value (var, value, aflags);
-#if defined (ARRAY_VARS)
- if ((aflags & ASS_NAMEREF) && (t == 0 || *t == 0 || (legal_identifier (t) == 0 && valid_array_reference (t) == 0)))
-#else
- if ((aflags & ASS_NAMEREF) && (t == 0 || *t == 0 || legal_identifier (t) == 0))
-#endif
- {
- free (t);
- if (invis)
- VSETATTR (var, att_invisible); /* XXX */
- return ((SHELL_VAR *)NULL);
- }
- FREE (value_cell (var));
- var_setvalue (var, t);
- }
-
- INVALIDATE_EXPORTSTR (var);
-
- if (mark_modified_vars)
- VSETATTR (var, att_exported);
-
- if (exported_p (var))
- array_needs_making = 1;
-
- return (var);
-}
-
-/* Bind/create a shell variable with the name LHS to the RHS.
- This creates or modifies a variable such that it is an integer.
-
- This used to be in expr.c, but it is here so that all of the
- variable binding stuff is localized. Since we don't want any
- recursive evaluation from bind_variable() (possible without this code,
- since bind_variable() calls the evaluator for variables with the integer
- attribute set), we temporarily turn off the integer attribute for each
- variable we set here, then turn it back on after binding as necessary. */
-
-SHELL_VAR *
-bind_int_variable (lhs, rhs)
- char *lhs, *rhs;
-{
- register SHELL_VAR *v;
- int isint, isarr, implicitarray;
-
- isint = isarr = implicitarray = 0;
-#if defined (ARRAY_VARS)
- if (valid_array_reference (lhs))
- {
- isarr = 1;
- v = array_variable_part (lhs, (char **)0, (int *)0);
- }
- else
-#endif
- v = find_variable (lhs);
-
- if (v)
- {
- isint = integer_p (v);
- VUNSETATTR (v, att_integer);
-#if defined (ARRAY_VARS)
- if (array_p (v) && isarr == 0)
- implicitarray = 1;
-#endif
- }
-
-#if defined (ARRAY_VARS)
- if (isarr)
- v = assign_array_element (lhs, rhs, 0);
- else if (implicitarray)
- v = bind_array_variable (lhs, 0, rhs, 0);
- else
-#endif
- v = bind_variable (lhs, rhs, 0);
-
- if (v && isint)
- VSETATTR (v, att_integer);
-
- VUNSETATTR (v, att_invisible);
-
- return (v);
-}
-
-SHELL_VAR *
-bind_var_to_int (var, val)
- char *var;
- intmax_t val;
-{
- char ibuf[INT_STRLEN_BOUND (intmax_t) + 1], *p;
-
- p = fmtulong (val, 10, ibuf, sizeof (ibuf), 0);
- return (bind_int_variable (var, p));
-}
-
-/* Do a function binding to a variable. You pass the name and
- the command to bind to. This conses the name and command. */
-SHELL_VAR *
-bind_function (name, value)
- const char *name;
- COMMAND *value;
-{
- SHELL_VAR *entry;
-
- entry = find_function (name);
- if (entry == 0)
- {
- BUCKET_CONTENTS *elt;
-
- elt = hash_insert (savestring (name), shell_functions, HASH_NOSRCH);
- entry = new_shell_variable (name);
- elt->data = (PTR_T)entry;
- }
- else
- INVALIDATE_EXPORTSTR (entry);
-
- if (var_isset (entry))
- dispose_command (function_cell (entry));
-
- if (value)
- var_setfunc (entry, copy_command (value));
- else
- var_setfunc (entry, 0);
-
- VSETATTR (entry, att_function);
-
- if (mark_modified_vars)
- VSETATTR (entry, att_exported);
-
- VUNSETATTR (entry, att_invisible); /* Just to be sure */
-
- if (exported_p (entry))
- array_needs_making = 1;
-
-#if defined (PROGRAMMABLE_COMPLETION)
- set_itemlist_dirty (&it_functions);
-#endif
-
- return (entry);
-}
-
-#if defined (DEBUGGER)
-/* Bind a function definition, which includes source file and line number
- information in addition to the command, into the FUNCTION_DEF hash table.*/
-void
-bind_function_def (name, value)
- const char *name;
- FUNCTION_DEF *value;
-{
- FUNCTION_DEF *entry;
- BUCKET_CONTENTS *elt;
- COMMAND *cmd;
-
- entry = find_function_def (name);
- if (entry)
- {
- dispose_function_def_contents (entry);
- entry = copy_function_def_contents (value, entry);
- }
- else
- {
- cmd = value->command;
- value->command = 0;
- entry = copy_function_def (value);
- value->command = cmd;
-
- elt = hash_insert (savestring (name), shell_function_defs, HASH_NOSRCH);
- elt->data = (PTR_T *)entry;
- }
-}
-#endif /* DEBUGGER */
-
-/* Add STRING, which is of the form foo=bar, to the temporary environment
- HASH_TABLE (temporary_env). The functions in execute_cmd.c are
- responsible for moving the main temporary env to one of the other
- temporary environments. The expansion code in subst.c calls this. */
-int
-assign_in_env (word, flags)
- WORD_DESC *word;
- int flags;
-{
- int offset, aflags;
- char *name, *temp, *value;
- SHELL_VAR *var;
- const char *string;
-
- string = word->word;
-
- aflags = 0;
- offset = assignment (string, 0);
- name = savestring (string);
- value = (char *)NULL;
-
- if (name[offset] == '=')
- {
- name[offset] = 0;
-
- /* don't ignore the `+' when assigning temporary environment */
- if (name[offset - 1] == '+')
- {
- name[offset - 1] = '\0';
- aflags |= ASS_APPEND;
- }
-
- var = find_variable (name);
- if (var && (readonly_p (var) || noassign_p (var)))
- {
- if (readonly_p (var))
- err_readonly (name);
- free (name);
- return (0);
- }
-
- temp = name + offset + 1;
- value = expand_assignment_string_to_string (temp, 0);
-
- if (var && (aflags & ASS_APPEND))
- {
- temp = make_variable_value (var, value, aflags);
- FREE (value);
- value = temp;
- }
- }
-
- if (temporary_env == 0)
- temporary_env = hash_create (TEMPENV_HASH_BUCKETS);
-
- var = hash_lookup (name, temporary_env);
- if (var == 0)
- var = make_new_variable (name, temporary_env);
- else
- FREE (value_cell (var));
-
- if (value == 0)
- {
- value = (char *)xmalloc (1); /* like do_assignment_internal */
- value[0] = '\0';
- }
-
- var_setvalue (var, value);
- var->attributes |= (att_exported|att_tempvar);
- var->context = variable_context; /* XXX */
-
- INVALIDATE_EXPORTSTR (var);
- var->exportstr = mk_env_string (name, value, 0);
-
- array_needs_making = 1;
-
- if (flags)
- stupidly_hack_special_variables (name);
-
- if (echo_command_at_execute)
- /* The Korn shell prints the `+ ' in front of assignment statements,
- so we do too. */
- xtrace_print_assignment (name, value, 0, 1);
-
- free (name);
- return 1;
-}
-
-/* **************************************************************** */
-/* */
-/* Copying variables */
-/* */
-/* **************************************************************** */
-
-#ifdef INCLUDE_UNUSED
-/* Copy VAR to a new data structure and return that structure. */
-SHELL_VAR *
-copy_variable (var)
- SHELL_VAR *var;
-{
- SHELL_VAR *copy = (SHELL_VAR *)NULL;
-
- if (var)
- {
- copy = (SHELL_VAR *)xmalloc (sizeof (SHELL_VAR));
-
- copy->attributes = var->attributes;
- copy->name = savestring (var->name);
-
- if (function_p (var))
- var_setfunc (copy, copy_command (function_cell (var)));
-#if defined (ARRAY_VARS)
- else if (array_p (var))
- var_setarray (copy, array_copy (array_cell (var)));
- else if (assoc_p (var))
- var_setassoc (copy, assoc_copy (assoc_cell (var)));
-#endif
- else if (nameref_cell (var)) /* XXX - nameref */
- var_setref (copy, savestring (nameref_cell (var)));
- else if (value_cell (var)) /* XXX - nameref */
- var_setvalue (copy, savestring (value_cell (var)));
- else
- var_setvalue (copy, (char *)NULL);
-
- copy->dynamic_value = var->dynamic_value;
- copy->assign_func = var->assign_func;
-
- copy->exportstr = COPY_EXPORTSTR (var);
-
- copy->context = var->context;
- }
- return (copy);
-}
-#endif
-
-/* **************************************************************** */
-/* */
-/* Deleting and unsetting variables */
-/* */
-/* **************************************************************** */
-
-/* Dispose of the information attached to VAR. */
-static void
-dispose_variable_value (var)
- SHELL_VAR *var;
-{
- if (function_p (var))
- dispose_command (function_cell (var));
-#if defined (ARRAY_VARS)
- else if (array_p (var))
- array_dispose (array_cell (var));
- else if (assoc_p (var))
- assoc_dispose (assoc_cell (var));
-#endif
- else if (nameref_p (var))
- FREE (nameref_cell (var));
- else
- FREE (value_cell (var));
-}
-
-void
-dispose_variable (var)
- SHELL_VAR *var;
-{
- if (var == 0)
- return;
-
- if (nofree_p (var) == 0)
- dispose_variable_value (var);
-
- FREE_EXPORTSTR (var);
-
- free (var->name);
-
- if (exported_p (var))
- array_needs_making = 1;
-
- free (var);
-}
-
-/* Unset the shell variable referenced by NAME. Unsetting a nameref variable
- unsets the variable it resolves to but leaves the nameref alone. */
-int
-unbind_variable (name)
- const char *name;
-{
- SHELL_VAR *v, *nv;
- int r;
-
- v = var_lookup (name, shell_variables);
- nv = (v && nameref_p (v)) ? find_variable_nameref (v) : (SHELL_VAR *)NULL;
-
- r = nv ? makunbound (nv->name, shell_variables) : makunbound (name, shell_variables);
- return r;
-}
-
-/* Unbind NAME, where NAME is assumed to be a nameref variable */
-int
-unbind_nameref (name)
- const char *name;
-{
- SHELL_VAR *v;
-
- v = var_lookup (name, shell_variables);
- if (v && nameref_p (v))
- return makunbound (name, shell_variables);
- return 0;
-}
-
-/* Unset the shell function named NAME. */
-int
-unbind_func (name)
- const char *name;
-{
- BUCKET_CONTENTS *elt;
- SHELL_VAR *func;
-
- elt = hash_remove (name, shell_functions, 0);
-
- if (elt == 0)
- return -1;
-
-#if defined (PROGRAMMABLE_COMPLETION)
- set_itemlist_dirty (&it_functions);
-#endif
-
- func = (SHELL_VAR *)elt->data;
- if (func)
- {
- if (exported_p (func))
- array_needs_making++;
- dispose_variable (func);
- }
-
- free (elt->key);
- free (elt);
-
- return 0;
-}
-
-#if defined (DEBUGGER)
-int
-unbind_function_def (name)
- const char *name;
-{
- BUCKET_CONTENTS *elt;
- FUNCTION_DEF *funcdef;
-
- elt = hash_remove (name, shell_function_defs, 0);
-
- if (elt == 0)
- return -1;
-
- funcdef = (FUNCTION_DEF *)elt->data;
- if (funcdef)
- dispose_function_def (funcdef);
-
- free (elt->key);
- free (elt);
-
- return 0;
-}
-#endif /* DEBUGGER */
-
-int
-delete_var (name, vc)
- const char *name;
- VAR_CONTEXT *vc;
-{
- BUCKET_CONTENTS *elt;
- SHELL_VAR *old_var;
- VAR_CONTEXT *v;
-
- for (elt = (BUCKET_CONTENTS *)NULL, v = vc; v; v = v->down)
- if (elt = hash_remove (name, v->table, 0))
- break;
-
- if (elt == 0)
- return (-1);
-
- old_var = (SHELL_VAR *)elt->data;
- free (elt->key);
- free (elt);
-
- dispose_variable (old_var);
- return (0);
-}
-
-/* Make the variable associated with NAME go away. HASH_LIST is the
- hash table from which this variable should be deleted (either
- shell_variables or shell_functions).
- Returns non-zero if the variable couldn't be found. */
-int
-makunbound (name, vc)
- const char *name;
- VAR_CONTEXT *vc;
-{
- BUCKET_CONTENTS *elt, *new_elt;
- SHELL_VAR *old_var;
- VAR_CONTEXT *v;
- char *t;
-
- for (elt = (BUCKET_CONTENTS *)NULL, v = vc; v; v = v->down)
- if (elt = hash_remove (name, v->table, 0))
- break;
-
- if (elt == 0)
- return (-1);
-
- old_var = (SHELL_VAR *)elt->data;
-
- if (old_var && exported_p (old_var))
- array_needs_making++;
-
- /* If we're unsetting a local variable and we're still executing inside
- the function, just mark the variable as invisible. The function
- eventually called by pop_var_context() will clean it up later. This
- must be done so that if the variable is subsequently assigned a new
- value inside the function, the `local' attribute is still present.
- We also need to add it back into the correct hash table. */
- if (old_var && local_p (old_var) && variable_context == old_var->context)
- {
- if (nofree_p (old_var))
- var_setvalue (old_var, (char *)NULL);
-#if defined (ARRAY_VARS)
- else if (array_p (old_var))
- array_dispose (array_cell (old_var));
- else if (assoc_p (old_var))
- assoc_dispose (assoc_cell (old_var));
-#endif
- else if (nameref_p (old_var))
- FREE (nameref_cell (old_var));
- else
- FREE (value_cell (old_var));
- /* Reset the attributes. Preserve the export attribute if the variable
- came from a temporary environment. Make sure it stays local, and
- make it invisible. */
- old_var->attributes = (exported_p (old_var) && tempvar_p (old_var)) ? att_exported : 0;
- VSETATTR (old_var, att_local);
- VSETATTR (old_var, att_invisible);
- var_setvalue (old_var, (char *)NULL);
- INVALIDATE_EXPORTSTR (old_var);
-
- new_elt = hash_insert (savestring (old_var->name), v->table, 0);
- new_elt->data = (PTR_T)old_var;
- stupidly_hack_special_variables (old_var->name);
-
- free (elt->key);
- free (elt);
- return (0);
- }
-
- /* Have to save a copy of name here, because it might refer to
- old_var->name. If so, stupidly_hack_special_variables will
- reference freed memory. */
- t = savestring (name);
-
- free (elt->key);
- free (elt);
-
- dispose_variable (old_var);
- stupidly_hack_special_variables (t);
- free (t);
-
- return (0);
-}
-
-/* Get rid of all of the variables in the current context. */
-void
-kill_all_local_variables ()
-{
- VAR_CONTEXT *vc;
-
- for (vc = shell_variables; vc; vc = vc->down)
- if (vc_isfuncenv (vc) && vc->scope == variable_context)
- break;
- if (vc == 0)
- return; /* XXX */
-
- if (vc->table && vc_haslocals (vc))
- {
- delete_all_variables (vc->table);
- hash_dispose (vc->table);
- }
- vc->table = (HASH_TABLE *)NULL;
-}
-
-static void
-free_variable_hash_data (data)
- PTR_T data;
-{
- SHELL_VAR *var;
-
- var = (SHELL_VAR *)data;
- dispose_variable (var);
-}
-
-/* Delete the entire contents of the hash table. */
-void
-delete_all_variables (hashed_vars)
- HASH_TABLE *hashed_vars;
-{
- hash_flush (hashed_vars, free_variable_hash_data);
-}
-
-/* **************************************************************** */
-/* */
-/* Setting variable attributes */
-/* */
-/* **************************************************************** */
-
-#define FIND_OR_MAKE_VARIABLE(name, entry) \
- do \
- { \
- entry = find_variable (name); \
- if (!entry) \
- { \
- entry = bind_variable (name, "", 0); \
- if (!no_invisible_vars && entry) entry->attributes |= att_invisible; \
- } \
- } \
- while (0)
-
-/* Make the variable associated with NAME be readonly.
- If NAME does not exist yet, create it. */
-void
-set_var_read_only (name)
- char *name;
-{
- SHELL_VAR *entry;
-
- FIND_OR_MAKE_VARIABLE (name, entry);
- VSETATTR (entry, att_readonly);
-}
-
-#ifdef INCLUDE_UNUSED
-/* Make the function associated with NAME be readonly.
- If NAME does not exist, we just punt, like auto_export code below. */
-void
-set_func_read_only (name)
- const char *name;
-{
- SHELL_VAR *entry;
-
- entry = find_function (name);
- if (entry)
- VSETATTR (entry, att_readonly);
-}
-
-/* Make the variable associated with NAME be auto-exported.
- If NAME does not exist yet, create it. */
-void
-set_var_auto_export (name)
- char *name;
-{
- SHELL_VAR *entry;
-
- FIND_OR_MAKE_VARIABLE (name, entry);
- set_auto_export (entry);
-}
-
-/* Make the function associated with NAME be auto-exported. */
-void
-set_func_auto_export (name)
- const char *name;
-{
- SHELL_VAR *entry;
-
- entry = find_function (name);
- if (entry)
- set_auto_export (entry);
-}
-#endif
-
-/* **************************************************************** */
-/* */
-/* Creating lists of variables */
-/* */
-/* **************************************************************** */
-
-static VARLIST *
-vlist_alloc (nentries)
- int nentries;
-{
- VARLIST *vlist;
-
- vlist = (VARLIST *)xmalloc (sizeof (VARLIST));
- vlist->list = (SHELL_VAR **)xmalloc ((nentries + 1) * sizeof (SHELL_VAR *));
- vlist->list_size = nentries;
- vlist->list_len = 0;
- vlist->list[0] = (SHELL_VAR *)NULL;
-
- return vlist;
-}
-
-static VARLIST *
-vlist_realloc (vlist, n)
- VARLIST *vlist;
- int n;
-{
- if (vlist == 0)
- return (vlist = vlist_alloc (n));
- if (n > vlist->list_size)
- {
- vlist->list_size = n;
- vlist->list = (SHELL_VAR **)xrealloc (vlist->list, (vlist->list_size + 1) * sizeof (SHELL_VAR *));
- }
- return vlist;
-}
-
-static void
-vlist_add (vlist, var, flags)
- VARLIST *vlist;
- SHELL_VAR *var;
- int flags;
-{
- register int i;
-
- for (i = 0; i < vlist->list_len; i++)
- if (STREQ (var->name, vlist->list[i]->name))
- break;
- if (i < vlist->list_len)
- return;
-
- if (i >= vlist->list_size)
- vlist = vlist_realloc (vlist, vlist->list_size + 16);
-
- vlist->list[vlist->list_len++] = var;
- vlist->list[vlist->list_len] = (SHELL_VAR *)NULL;
-}
-
-/* Map FUNCTION over the variables in VAR_HASH_TABLE. Return an array of the
- variables for which FUNCTION returns a non-zero value. A NULL value
- for FUNCTION means to use all variables. */
-SHELL_VAR **
-map_over (function, vc)
- sh_var_map_func_t *function;
- VAR_CONTEXT *vc;
-{
- VAR_CONTEXT *v;
- VARLIST *vlist;
- SHELL_VAR **ret;
- int nentries;
-
- for (nentries = 0, v = vc; v; v = v->down)
- nentries += HASH_ENTRIES (v->table);
-
- if (nentries == 0)
- return (SHELL_VAR **)NULL;
-
- vlist = vlist_alloc (nentries);
-
- for (v = vc; v; v = v->down)
- flatten (v->table, function, vlist, 0);
-
- ret = vlist->list;
- free (vlist);
- return ret;
-}
-
-SHELL_VAR **
-map_over_funcs (function)
- sh_var_map_func_t *function;
-{
- VARLIST *vlist;
- SHELL_VAR **ret;
-
- if (shell_functions == 0 || HASH_ENTRIES (shell_functions) == 0)
- return ((SHELL_VAR **)NULL);
-
- vlist = vlist_alloc (HASH_ENTRIES (shell_functions));
-
- flatten (shell_functions, function, vlist, 0);
-
- ret = vlist->list;
- free (vlist);
- return ret;
-}
-
-/* Flatten VAR_HASH_TABLE, applying FUNC to each member and adding those
- elements for which FUNC succeeds to VLIST->list. FLAGS is reserved
- for future use. Only unique names are added to VLIST. If FUNC is
- NULL, each variable in VAR_HASH_TABLE is added to VLIST. If VLIST is
- NULL, FUNC is applied to each SHELL_VAR in VAR_HASH_TABLE. If VLIST
- and FUNC are both NULL, nothing happens. */
-static void
-flatten (var_hash_table, func, vlist, flags)
- HASH_TABLE *var_hash_table;
- sh_var_map_func_t *func;
- VARLIST *vlist;
- int flags;
-{
- register int i;
- register BUCKET_CONTENTS *tlist;
- int r;
- SHELL_VAR *var;
-
- if (var_hash_table == 0 || (HASH_ENTRIES (var_hash_table) == 0) || (vlist == 0 && func == 0))
- return;
-
- for (i = 0; i < var_hash_table->nbuckets; i++)
- {
- for (tlist = hash_items (i, var_hash_table); tlist; tlist = tlist->next)
- {
- var = (SHELL_VAR *)tlist->data;
-
- r = func ? (*func) (var) : 1;
- if (r && vlist)
- vlist_add (vlist, var, flags);
- }
- }
-}
-
-void
-sort_variables (array)
- SHELL_VAR **array;
-{
- qsort (array, strvec_len ((char **)array), sizeof (SHELL_VAR *), (QSFUNC *)qsort_var_comp);
-}
-
-static int
-qsort_var_comp (var1, var2)
- SHELL_VAR **var1, **var2;
-{
- int result;
-
- if ((result = (*var1)->name[0] - (*var2)->name[0]) == 0)
- result = strcmp ((*var1)->name, (*var2)->name);
-
- return (result);
-}
-
-/* Apply FUNC to each variable in SHELL_VARIABLES, adding each one for
- which FUNC succeeds to an array of SHELL_VAR *s. Returns the array. */
-static SHELL_VAR **
-vapply (func)
- sh_var_map_func_t *func;
-{
- SHELL_VAR **list;
-
- list = map_over (func, shell_variables);
- if (list /* && posixly_correct */)
- sort_variables (list);
- return (list);
-}
-
-/* Apply FUNC to each variable in SHELL_FUNCTIONS, adding each one for
- which FUNC succeeds to an array of SHELL_VAR *s. Returns the array. */
-static SHELL_VAR **
-fapply (func)
- sh_var_map_func_t *func;
-{
- SHELL_VAR **list;
-
- list = map_over_funcs (func);
- if (list /* && posixly_correct */)
- sort_variables (list);
- return (list);
-}
-
-/* Create a NULL terminated array of all the shell variables. */
-SHELL_VAR **
-all_shell_variables ()
-{
- return (vapply ((sh_var_map_func_t *)NULL));
-}
-
-/* Create a NULL terminated array of all the shell functions. */
-SHELL_VAR **
-all_shell_functions ()
-{
- return (fapply ((sh_var_map_func_t *)NULL));
-}
-
-static int
-visible_var (var)
- SHELL_VAR *var;
-{
- return (invisible_p (var) == 0);
-}
-
-SHELL_VAR **
-all_visible_functions ()
-{
- return (fapply (visible_var));
-}
-
-SHELL_VAR **
-all_visible_variables ()
-{
- return (vapply (visible_var));
-}
-
-/* Return non-zero if the variable VAR is visible and exported. Array
- variables cannot be exported. */
-static int
-visible_and_exported (var)
- SHELL_VAR *var;
-{
- return (invisible_p (var) == 0 && exported_p (var));
-}
-
-/* Candidate variables for the export environment are either valid variables
- with the export attribute or invalid variables inherited from the initial
- environment and simply passed through. */
-static int
-export_environment_candidate (var)
- SHELL_VAR *var;
-{
- return (exported_p (var) && (invisible_p (var) == 0 || imported_p (var)));
-}
-
-/* Return non-zero if VAR is a local variable in the current context and
- is exported. */
-static int
-local_and_exported (var)
- SHELL_VAR *var;
-{
- return (invisible_p (var) == 0 && local_p (var) && var->context == variable_context && exported_p (var));
-}
-
-SHELL_VAR **
-all_exported_variables ()
-{
- return (vapply (visible_and_exported));
-}
-
-SHELL_VAR **
-local_exported_variables ()
-{
- return (vapply (local_and_exported));
-}
-
-static int
-variable_in_context (var)
- SHELL_VAR *var;
-{
- return (invisible_p (var) == 0 && local_p (var) && var->context == variable_context);
-}
-
-SHELL_VAR **
-all_local_variables ()
-{
- VARLIST *vlist;
- SHELL_VAR **ret;
- VAR_CONTEXT *vc;
-
- vc = shell_variables;
- for (vc = shell_variables; vc; vc = vc->down)
- if (vc_isfuncenv (vc) && vc->scope == variable_context)
- break;
-
- if (vc == 0)
- {
- internal_error (_("all_local_variables: no function context at current scope"));
- return (SHELL_VAR **)NULL;
- }
- if (vc->table == 0 || HASH_ENTRIES (vc->table) == 0 || vc_haslocals (vc) == 0)
- return (SHELL_VAR **)NULL;
-
- vlist = vlist_alloc (HASH_ENTRIES (vc->table));
-
- flatten (vc->table, variable_in_context, vlist, 0);
-
- ret = vlist->list;
- free (vlist);
- if (ret)
- sort_variables (ret);
- return ret;
-}
-
-#if defined (ARRAY_VARS)
-/* Return non-zero if the variable VAR is visible and an array. */
-static int
-visible_array_vars (var)
- SHELL_VAR *var;
-{
- return (invisible_p (var) == 0 && array_p (var));
-}
-
-SHELL_VAR **
-all_array_variables ()
-{
- return (vapply (visible_array_vars));
-}
-#endif /* ARRAY_VARS */
-
-char **
-all_variables_matching_prefix (prefix)
- const char *prefix;
-{
- SHELL_VAR **varlist;
- char **rlist;
- int vind, rind, plen;
-
- plen = STRLEN (prefix);
- varlist = all_visible_variables ();
- for (vind = 0; varlist && varlist[vind]; vind++)
- ;
- if (varlist == 0 || vind == 0)
- return ((char **)NULL);
- rlist = strvec_create (vind + 1);
- for (vind = rind = 0; varlist[vind]; vind++)
- {
- if (plen == 0 || STREQN (prefix, varlist[vind]->name, plen))
- rlist[rind++] = savestring (varlist[vind]->name);
- }
- rlist[rind] = (char *)0;
- free (varlist);
-
- return rlist;
-}
-
-/* **************************************************************** */
-/* */
-/* Managing temporary variable scopes */
-/* */
-/* **************************************************************** */
-
-/* Make variable NAME have VALUE in the temporary environment. */
-static SHELL_VAR *
-bind_tempenv_variable (name, value)
- const char *name;
- char *value;
-{
- SHELL_VAR *var;
-
- var = temporary_env ? hash_lookup (name, temporary_env) : (SHELL_VAR *)NULL;
-
- if (var)
- {
- FREE (value_cell (var));
- var_setvalue (var, savestring (value));
- INVALIDATE_EXPORTSTR (var);
- }
-
- return (var);
-}
-
-/* Find a variable in the temporary environment that is named NAME.
- Return the SHELL_VAR *, or NULL if not found. */
-SHELL_VAR *
-find_tempenv_variable (name)
- const char *name;
-{
- return (temporary_env ? hash_lookup (name, temporary_env) : (SHELL_VAR *)NULL);
-}
-
-char **tempvar_list;
-int tvlist_ind;
-
-/* Push the variable described by (SHELL_VAR *)DATA down to the next
- variable context from the temporary environment. */
-static void
-push_temp_var (data)
- PTR_T data;
-{
- SHELL_VAR *var, *v;
- HASH_TABLE *binding_table;
-
- var = (SHELL_VAR *)data;
-
- binding_table = shell_variables->table;
- if (binding_table == 0)
- {
- if (shell_variables == global_variables)
- /* shouldn't happen */
- binding_table = shell_variables->table = global_variables->table = hash_create (0);
- else
- binding_table = shell_variables->table = hash_create (TEMPENV_HASH_BUCKETS);
- }
-
- v = bind_variable_internal (var->name, value_cell (var), binding_table, 0, ASS_FORCE);
-
- /* XXX - should we set the context here? It shouldn't matter because of how
- assign_in_env works, but might want to check. */
- if (binding_table == global_variables->table) /* XXX */
- var->attributes &= ~(att_tempvar|att_propagate);
- else
- {
- var->attributes |= att_propagate;
- if (binding_table == shell_variables->table)
- shell_variables->flags |= VC_HASTMPVAR;
- }
- v->attributes |= var->attributes;
-
- if (find_special_var (var->name) >= 0)
- tempvar_list[tvlist_ind++] = savestring (var->name);
-
- dispose_variable (var);
-}
-
-static void
-propagate_temp_var (data)
- PTR_T data;
-{
- SHELL_VAR *var;
-
- var = (SHELL_VAR *)data;
- if (tempvar_p (var) && (var->attributes & att_propagate))
- push_temp_var (data);
- else
- {
- if (find_special_var (var->name) >= 0)
- tempvar_list[tvlist_ind++] = savestring (var->name);
- dispose_variable (var);
- }
-}
-
-/* Free the storage used in the hash table for temporary
- environment variables. PUSHF is a function to be called
- to free each hash table entry. It takes care of pushing variables
- to previous scopes if appropriate. PUSHF stores names of variables
- that require special handling (e.g., IFS) on tempvar_list, so this
- function can call stupidly_hack_special_variables on all the
- variables in the list when the temporary hash table is destroyed. */
-static void
-dispose_temporary_env (pushf)
- sh_free_func_t *pushf;
-{
- int i;
-
- tempvar_list = strvec_create (HASH_ENTRIES (temporary_env) + 1);
- tempvar_list[tvlist_ind = 0] = 0;
-
- hash_flush (temporary_env, pushf);
- hash_dispose (temporary_env);
- temporary_env = (HASH_TABLE *)NULL;
-
- tempvar_list[tvlist_ind] = 0;
-
- array_needs_making = 1;
-
-#if 0
- sv_ifs ("IFS"); /* XXX here for now -- check setifs in assign_in_env */
-#endif
- for (i = 0; i < tvlist_ind; i++)
- stupidly_hack_special_variables (tempvar_list[i]);
-
- strvec_dispose (tempvar_list);
- tempvar_list = 0;
- tvlist_ind = 0;
-}
-
-void
-dispose_used_env_vars ()
-{
- if (temporary_env)
- {
- dispose_temporary_env (propagate_temp_var);
- maybe_make_export_env ();
- }
-}
-
-/* Take all of the shell variables in the temporary environment HASH_TABLE
- and make shell variables from them at the current variable context. */
-void
-merge_temporary_env ()
-{
- if (temporary_env)
- dispose_temporary_env (push_temp_var);
-}
-
-void
-flush_temporary_env ()
-{
- if (temporary_env)
- {
- hash_flush (temporary_env, free_variable_hash_data);
- hash_dispose (temporary_env);
- temporary_env = (HASH_TABLE *)NULL;
- }
-}
-
-/* **************************************************************** */
-/* */
-/* Creating and manipulating the environment */
-/* */
-/* **************************************************************** */
-
-static inline char *
-mk_env_string (name, value, isfunc)
- const char *name, *value;
- int isfunc;
-{
- size_t name_len, value_len;
- char *p, *q;
-
- name_len = strlen (name);
- value_len = STRLEN (value);
-
- /* If we are exporting a shell function, construct the encoded function
- name. */
- if (isfunc && value)
- {
- p = (char *)xmalloc (BASHFUNC_PREFLEN + name_len + BASHFUNC_SUFFLEN + value_len + 2);
- q = p;
- memcpy (q, BASHFUNC_PREFIX, BASHFUNC_PREFLEN);
- q += BASHFUNC_PREFLEN;
- memcpy (q, name, name_len);
- q += name_len;
- memcpy (q, BASHFUNC_SUFFIX, BASHFUNC_SUFFLEN);
- q += BASHFUNC_SUFFLEN;
- }
- else
- {
- p = (char *)xmalloc (2 + name_len + value_len);
- memcpy (p, name, name_len);
- q = p + name_len;
- }
-
- q[0] = '=';
- if (value && *value)
- memcpy (q + 1, value, value_len + 1);
- else
- q[1] = '\0';
-
- return (p);
-}
-
-#ifdef DEBUG
-/* Debugging */
-static int
-valid_exportstr (v)
- SHELL_VAR *v;
-{
- char *s;
-
- s = v->exportstr;
- if (s == 0)
- {
- internal_error (_("%s has null exportstr"), v->name);
- return (0);
- }
- if (legal_variable_starter ((unsigned char)*s) == 0)
- {
- internal_error (_("invalid character %d in exportstr for %s"), *s, v->name);
- return (0);
- }
- for (s = v->exportstr + 1; s && *s; s++)
- {
- if (*s == '=')
- break;
- if (legal_variable_char ((unsigned char)*s) == 0)
- {
- internal_error (_("invalid character %d in exportstr for %s"), *s, v->name);
- return (0);
- }
- }
- if (*s != '=')
- {
- internal_error (_("no `=' in exportstr for %s"), v->name);
- return (0);
- }
- return (1);
-}
-#endif
-
-static char **
-make_env_array_from_var_list (vars)
- SHELL_VAR **vars;
-{
- register int i, list_index;
- register SHELL_VAR *var;
- char **list, *value;
-
- list = strvec_create ((1 + strvec_len ((char **)vars)));
-
-#define USE_EXPORTSTR (value == var->exportstr)
-
- for (i = 0, list_index = 0; var = vars[i]; i++)
- {
-#if defined (__CYGWIN__)
- /* We don't use the exportstr stuff on Cygwin at all. */
- INVALIDATE_EXPORTSTR (var);
-#endif
- if (var->exportstr)
- value = var->exportstr;
- else if (function_p (var))
- value = named_function_string ((char *)NULL, function_cell (var), 0);
-#if defined (ARRAY_VARS)
- else if (array_p (var))
-# if ARRAY_EXPORT
- value = array_to_assignment_string (array_cell (var));
-# else
- continue; /* XXX array vars cannot yet be exported */
-# endif /* ARRAY_EXPORT */
- else if (assoc_p (var))
-# if 0
- value = assoc_to_assignment_string (assoc_cell (var));
-# else
- continue; /* XXX associative array vars cannot yet be exported */
-# endif
-#endif
- else
- value = value_cell (var);
-
- if (value)
- {
- /* Gee, I'd like to get away with not using savestring() if we're
- using the cached exportstr... */
- list[list_index] = USE_EXPORTSTR ? savestring (value)
- : mk_env_string (var->name, value, function_p (var));
-
- if (USE_EXPORTSTR == 0)
- SAVE_EXPORTSTR (var, list[list_index]);
-
- list_index++;
-#undef USE_EXPORTSTR
-
-#if 0 /* not yet */
-#if defined (ARRAY_VARS)
- if (array_p (var) || assoc_p (var))
- free (value);
-#endif
-#endif
- }
- }
-
- list[list_index] = (char *)NULL;
- return (list);
-}
-
-/* Make an array of assignment statements from the hash table
- HASHED_VARS which contains SHELL_VARs. Only visible, exported
- variables are eligible. */
-static char **
-make_var_export_array (vcxt)
- VAR_CONTEXT *vcxt;
-{
- char **list;
- SHELL_VAR **vars;
-
-#if 0
- vars = map_over (visible_and_exported, vcxt);
-#else
- vars = map_over (export_environment_candidate, vcxt);
-#endif
-
- if (vars == 0)
- return (char **)NULL;
-
- list = make_env_array_from_var_list (vars);
-
- free (vars);
- return (list);
-}
-
-static char **
-make_func_export_array ()
-{
- char **list;
- SHELL_VAR **vars;
-
- vars = map_over_funcs (visible_and_exported);
- if (vars == 0)
- return (char **)NULL;
-
- list = make_env_array_from_var_list (vars);
-
- free (vars);
- return (list);
-}
-
-/* Add ENVSTR to the end of the exported environment, EXPORT_ENV. */
-#define add_to_export_env(envstr,do_alloc) \
-do \
- { \
- if (export_env_index >= (export_env_size - 1)) \
- { \
- export_env_size += 16; \
- export_env = strvec_resize (export_env, export_env_size); \
- environ = export_env; \
- } \
- export_env[export_env_index++] = (do_alloc) ? savestring (envstr) : envstr; \
- export_env[export_env_index] = (char *)NULL; \
- } while (0)
-
-/* Add ASSIGN to EXPORT_ENV, or supercede a previous assignment in the
- array with the same left-hand side. Return the new EXPORT_ENV. */
-char **
-add_or_supercede_exported_var (assign, do_alloc)
- char *assign;
- int do_alloc;
-{
- register int i;
- int equal_offset;
-
- equal_offset = assignment (assign, 0);
- if (equal_offset == 0)
- return (export_env);
-
- /* If this is a function, then only supersede the function definition.
- We do this by including the `=() {' in the comparison, like
- initialize_shell_variables does. */
- if (assign[equal_offset + 1] == '(' &&
- strncmp (assign + equal_offset + 2, ") {", 3) == 0) /* } */
- equal_offset += 4;
-
- for (i = 0; i < export_env_index; i++)
- {
- if (STREQN (assign, export_env[i], equal_offset + 1))
- {
- free (export_env[i]);
- export_env[i] = do_alloc ? savestring (assign) : assign;
- return (export_env);
- }
- }
- add_to_export_env (assign, do_alloc);
- return (export_env);
-}
-
-static void
-add_temp_array_to_env (temp_array, do_alloc, do_supercede)
- char **temp_array;
- int do_alloc, do_supercede;
-{
- register int i;
-
- if (temp_array == 0)
- return;
-
- for (i = 0; temp_array[i]; i++)
- {
- if (do_supercede)
- export_env = add_or_supercede_exported_var (temp_array[i], do_alloc);
- else
- add_to_export_env (temp_array[i], do_alloc);
- }
-
- free (temp_array);
-}
-
-/* Make the environment array for the command about to be executed, if the
- array needs making. Otherwise, do nothing. If a shell action could
- change the array that commands receive for their environment, then the
- code should `array_needs_making++'.
-
- The order to add to the array is:
- temporary_env
- list of var contexts whose head is shell_variables
- shell_functions
-
- This is the shell variable lookup order. We add only new variable
- names at each step, which allows local variables and variables in
- the temporary environments to shadow variables in the global (or
- any previous) scope.
-*/
-
-static int
-n_shell_variables ()
-{
- VAR_CONTEXT *vc;
- int n;
-
- for (n = 0, vc = shell_variables; vc; vc = vc->down)
- n += HASH_ENTRIES (vc->table);
- return n;
-}
-
-int
-chkexport (name)
- char *name;
-{
- SHELL_VAR *v;
-
- v = find_variable (name);
- if (v && exported_p (v))
- {
- array_needs_making = 1;
- maybe_make_export_env ();
- return 1;
- }
- return 0;
-}
-
-void
-maybe_make_export_env ()
-{
- register char **temp_array;
- int new_size;
- VAR_CONTEXT *tcxt;
-
- if (array_needs_making)
- {
- if (export_env)
- strvec_flush (export_env);
-
- /* Make a guess based on how many shell variables and functions we
- have. Since there will always be array variables, and array
- variables are not (yet) exported, this will always be big enough
- for the exported variables and functions. */
- new_size = n_shell_variables () + HASH_ENTRIES (shell_functions) + 1 +
- HASH_ENTRIES (temporary_env);
- if (new_size > export_env_size)
- {
- export_env_size = new_size;
- export_env = strvec_resize (export_env, export_env_size);
- environ = export_env;
- }
- export_env[export_env_index = 0] = (char *)NULL;
-
- /* Make a dummy variable context from the temporary_env, stick it on
- the front of shell_variables, call make_var_export_array on the
- whole thing to flatten it, and convert the list of SHELL_VAR *s
- to the form needed by the environment. */
- if (temporary_env)
- {
- tcxt = new_var_context ((char *)NULL, 0);
- tcxt->table = temporary_env;
- tcxt->down = shell_variables;
- }
- else
- tcxt = shell_variables;
-
- temp_array = make_var_export_array (tcxt);
- if (temp_array)
- add_temp_array_to_env (temp_array, 0, 0);
-
- if (tcxt != shell_variables)
- free (tcxt);
-
-#if defined (RESTRICTED_SHELL)
- /* Restricted shells may not export shell functions. */
- temp_array = restricted ? (char **)0 : make_func_export_array ();
-#else
- temp_array = make_func_export_array ();
-#endif
- if (temp_array)
- add_temp_array_to_env (temp_array, 0, 0);
-
- array_needs_making = 0;
- }
-}
-
-/* This is an efficiency hack. PWD and OLDPWD are auto-exported, so
- we will need to remake the exported environment every time we
- change directories. `_' is always put into the environment for
- every external command, so without special treatment it will always
- cause the environment to be remade.
-
- If there is no other reason to make the exported environment, we can
- just update the variables in place and mark the exported environment
- as no longer needing a remake. */
-void
-update_export_env_inplace (env_prefix, preflen, value)
- char *env_prefix;
- int preflen;
- char *value;
-{
- char *evar;
-
- evar = (char *)xmalloc (STRLEN (value) + preflen + 1);
- strcpy (evar, env_prefix);
- if (value)
- strcpy (evar + preflen, value);
- export_env = add_or_supercede_exported_var (evar, 0);
-}
-
-/* We always put _ in the environment as the name of this command. */
-void
-put_command_name_into_env (command_name)
- char *command_name;
-{
- update_export_env_inplace ("_=", 2, command_name);
-}
-
-/* **************************************************************** */
-/* */
-/* Managing variable contexts */
-/* */
-/* **************************************************************** */
-
-/* Allocate and return a new variable context with NAME and FLAGS.
- NAME can be NULL. */
-
-VAR_CONTEXT *
-new_var_context (name, flags)
- char *name;
- int flags;
-{
- VAR_CONTEXT *vc;
-
- vc = (VAR_CONTEXT *)xmalloc (sizeof (VAR_CONTEXT));
- vc->name = name ? savestring (name) : (char *)NULL;
- vc->scope = variable_context;
- vc->flags = flags;
-
- vc->up = vc->down = (VAR_CONTEXT *)NULL;
- vc->table = (HASH_TABLE *)NULL;
-
- return vc;
-}
-
-/* Free a variable context and its data, including the hash table. Dispose
- all of the variables. */
-void
-dispose_var_context (vc)
- VAR_CONTEXT *vc;
-{
- FREE (vc->name);
-
- if (vc->table)
- {
- delete_all_variables (vc->table);
- hash_dispose (vc->table);
- }
-
- free (vc);
-}
-
-/* Set VAR's scope level to the current variable context. */
-static int
-set_context (var)
- SHELL_VAR *var;
-{
- return (var->context = variable_context);
-}
-
-/* Make a new variable context with NAME and FLAGS and a HASH_TABLE of
- temporary variables, and push it onto shell_variables. This is
- for shell functions. */
-VAR_CONTEXT *
-push_var_context (name, flags, tempvars)
- char *name;
- int flags;
- HASH_TABLE *tempvars;
-{
- VAR_CONTEXT *vc;
-
- vc = new_var_context (name, flags);
- vc->table = tempvars;
- if (tempvars)
- {
- /* Have to do this because the temp environment was created before
- variable_context was incremented. */
- flatten (tempvars, set_context, (VARLIST *)NULL, 0);
- vc->flags |= VC_HASTMPVAR;
- }
- vc->down = shell_variables;
- shell_variables->up = vc;
-
- return (shell_variables = vc);
-}
-
-static void
-push_func_var (data)
- PTR_T data;
-{
- SHELL_VAR *var, *v;
-
- var = (SHELL_VAR *)data;
-
- if (local_p (var) && STREQ (var->name, "-"))
- set_current_options (value_cell (var));
- else if (tempvar_p (var) && (posixly_correct || (var->attributes & att_propagate)))
- {
- /* Make sure we have a hash table to store the variable in while it is
- being propagated down to the global variables table. Create one if
- we have to */
- if ((vc_isfuncenv (shell_variables) || vc_istempenv (shell_variables)) && shell_variables->table == 0)
- shell_variables->table = hash_create (0);
- /* XXX - should we set v->context here? */
- v = bind_variable_internal (var->name, value_cell (var), shell_variables->table, 0, 0);
- if (shell_variables == global_variables)
- var->attributes &= ~(att_tempvar|att_propagate);
- else
- shell_variables->flags |= VC_HASTMPVAR;
- v->attributes |= var->attributes;
- }
- else
- stupidly_hack_special_variables (var->name); /* XXX */
-
- dispose_variable (var);
-}
-
-/* Pop the top context off of VCXT and dispose of it, returning the rest of
- the stack. */
-void
-pop_var_context ()
-{
- VAR_CONTEXT *ret, *vcxt;
-
- vcxt = shell_variables;
- if (vc_isfuncenv (vcxt) == 0)
- {
- internal_error (_("pop_var_context: head of shell_variables not a function context"));
- return;
- }
-
- if (ret = vcxt->down)
- {
- ret->up = (VAR_CONTEXT *)NULL;
- shell_variables = ret;
- if (vcxt->table)
- hash_flush (vcxt->table, push_func_var);
- dispose_var_context (vcxt);
- }
- else
- internal_error (_("pop_var_context: no global_variables context"));
-}
-
-/* Delete the HASH_TABLEs for all variable contexts beginning at VCXT, and
- all of the VAR_CONTEXTs except GLOBAL_VARIABLES. */
-void
-delete_all_contexts (vcxt)
- VAR_CONTEXT *vcxt;
-{
- VAR_CONTEXT *v, *t;
-
- for (v = vcxt; v != global_variables; v = t)
- {
- t = v->down;
- dispose_var_context (v);
- }
-
- delete_all_variables (global_variables->table);
- shell_variables = global_variables;
-}
-
-/* **************************************************************** */
-/* */
-/* Pushing and Popping temporary variable scopes */
-/* */
-/* **************************************************************** */
-
-VAR_CONTEXT *
-push_scope (flags, tmpvars)
- int flags;
- HASH_TABLE *tmpvars;
-{
- return (push_var_context ((char *)NULL, flags, tmpvars));
-}
-
-static void
-push_exported_var (data)
- PTR_T data;
-{
- SHELL_VAR *var, *v;
-
- var = (SHELL_VAR *)data;
-
- /* If a temp var had its export attribute set, or it's marked to be
- propagated, bind it in the previous scope before disposing it. */
- /* XXX - This isn't exactly right, because all tempenv variables have the
- export attribute set. */
-#if 0
- if (exported_p (var) || (var->attributes & att_propagate))
-#else
- if (tempvar_p (var) && exported_p (var) && (var->attributes & att_propagate))
-#endif
- {
- var->attributes &= ~att_tempvar; /* XXX */
- v = bind_variable_internal (var->name, value_cell (var), shell_variables->table, 0, 0);
- if (shell_variables == global_variables)
- var->attributes &= ~att_propagate;
- v->attributes |= var->attributes;
- }
- else
- stupidly_hack_special_variables (var->name); /* XXX */
-
- dispose_variable (var);
-}
-
-void
-pop_scope (is_special)
- int is_special;
-{
- VAR_CONTEXT *vcxt, *ret;
-
- vcxt = shell_variables;
- if (vc_istempscope (vcxt) == 0)
- {
- internal_error (_("pop_scope: head of shell_variables not a temporary environment scope"));
- return;
- }
-
- ret = vcxt->down;
- if (ret)
- ret->up = (VAR_CONTEXT *)NULL;
-
- shell_variables = ret;
-
- /* Now we can take care of merging variables in VCXT into set of scopes
- whose head is RET (shell_variables). */
- FREE (vcxt->name);
- if (vcxt->table)
- {
- if (is_special)
- hash_flush (vcxt->table, push_func_var);
- else
- hash_flush (vcxt->table, push_exported_var);
- hash_dispose (vcxt->table);
- }
- free (vcxt);
-
- sv_ifs ("IFS"); /* XXX here for now */
-}
-
-/* **************************************************************** */
-/* */
-/* Pushing and Popping function contexts */
-/* */
-/* **************************************************************** */
-
-static WORD_LIST **dollar_arg_stack = (WORD_LIST **)NULL;
-static int dollar_arg_stack_slots;
-static int dollar_arg_stack_index;
-
-/* XXX - should always be followed by remember_args () */
-void
-push_context (name, is_subshell, tempvars)
- char *name; /* function name */
- int is_subshell;
- HASH_TABLE *tempvars;
-{
- if (is_subshell == 0)
- push_dollar_vars ();
- variable_context++;
- push_var_context (name, VC_FUNCENV, tempvars);
-}
-
-/* Only called when subshell == 0, so we don't need to check, and can
- unconditionally pop the dollar vars off the stack. */
-void
-pop_context ()
-{
- pop_dollar_vars ();
- variable_context--;
- pop_var_context ();
-
- sv_ifs ("IFS"); /* XXX here for now */
-}
-
-/* Save the existing positional parameters on a stack. */
-void
-push_dollar_vars ()
-{
- if (dollar_arg_stack_index + 2 > dollar_arg_stack_slots)
- {
- dollar_arg_stack = (WORD_LIST **)
- xrealloc (dollar_arg_stack, (dollar_arg_stack_slots += 10)
- * sizeof (WORD_LIST *));
- }
- dollar_arg_stack[dollar_arg_stack_index++] = list_rest_of_args ();
- dollar_arg_stack[dollar_arg_stack_index] = (WORD_LIST *)NULL;
-}
-
-/* Restore the positional parameters from our stack. */
-void
-pop_dollar_vars ()
-{
- if (!dollar_arg_stack || dollar_arg_stack_index == 0)
- return;
-
- remember_args (dollar_arg_stack[--dollar_arg_stack_index], 1);
- dispose_words (dollar_arg_stack[dollar_arg_stack_index]);
- dollar_arg_stack[dollar_arg_stack_index] = (WORD_LIST *)NULL;
- set_dollar_vars_unchanged ();
-}
-
-void
-dispose_saved_dollar_vars ()
-{
- if (!dollar_arg_stack || dollar_arg_stack_index == 0)
- return;
-
- dispose_words (dollar_arg_stack[dollar_arg_stack_index]);
- dollar_arg_stack[dollar_arg_stack_index] = (WORD_LIST *)NULL;
-}
-
-/* Manipulate the special BASH_ARGV and BASH_ARGC variables. */
-
-void
-push_args (list)
- WORD_LIST *list;
-{
-#if defined (ARRAY_VARS) && defined (DEBUGGER)
- SHELL_VAR *bash_argv_v, *bash_argc_v;
- ARRAY *bash_argv_a, *bash_argc_a;
- WORD_LIST *l;
- arrayind_t i;
- char *t;
-
- GET_ARRAY_FROM_VAR ("BASH_ARGV", bash_argv_v, bash_argv_a);
- GET_ARRAY_FROM_VAR ("BASH_ARGC", bash_argc_v, bash_argc_a);
-
- for (l = list, i = 0; l; l = l->next, i++)
- array_push (bash_argv_a, l->word->word);
-
- t = itos (i);
- array_push (bash_argc_a, t);
- free (t);
-#endif /* ARRAY_VARS && DEBUGGER */
-}
-
-/* Remove arguments from BASH_ARGV array. Pop top element off BASH_ARGC
- array and use that value as the count of elements to remove from
- BASH_ARGV. */
-void
-pop_args ()
-{
-#if defined (ARRAY_VARS) && defined (DEBUGGER)
- SHELL_VAR *bash_argv_v, *bash_argc_v;
- ARRAY *bash_argv_a, *bash_argc_a;
- ARRAY_ELEMENT *ce;
- intmax_t i;
-
- GET_ARRAY_FROM_VAR ("BASH_ARGV", bash_argv_v, bash_argv_a);
- GET_ARRAY_FROM_VAR ("BASH_ARGC", bash_argc_v, bash_argc_a);
-
- ce = array_shift (bash_argc_a, 1, 0);
- if (ce == 0 || legal_number (element_value (ce), &i) == 0)
- i = 0;
-
- for ( ; i > 0; i--)
- array_pop (bash_argv_a);
- array_dispose_element (ce);
-#endif /* ARRAY_VARS && DEBUGGER */
-}
-
-/*************************************************
- * *
- * Functions to manage special variables *
- * *
- *************************************************/
-
-/* Extern declarations for variables this code has to manage. */
-extern int eof_encountered, eof_encountered_limit, ignoreeof;
-
-#if defined (READLINE)
-extern int hostname_list_initialized;
-#endif
-
-/* An alist of name.function for each special variable. Most of the
- functions don't do much, and in fact, this would be faster with a
- switch statement, but by the end of this file, I am sick of switch
- statements. */
-
-#define SET_INT_VAR(name, intvar) intvar = find_variable (name) != 0
-
-/* This table will be sorted with qsort() the first time it's accessed. */
-struct name_and_function {
- char *name;
- sh_sv_func_t *function;
-};
-
-static struct name_and_function special_vars[] = {
- { "BASH_COMPAT", sv_shcompat },
- { "BASH_XTRACEFD", sv_xtracefd },
-
-#if defined (JOB_CONTROL)
- { "CHILD_MAX", sv_childmax },
-#endif
-
-#if defined (READLINE)
-# if defined (STRICT_POSIX)
- { "COLUMNS", sv_winsize },
-# endif
- { "COMP_WORDBREAKS", sv_comp_wordbreaks },
-#endif
-
- { "FUNCNEST", sv_funcnest },
-
- { "GLOBIGNORE", sv_globignore },
-
-#if defined (HISTORY)
- { "HISTCONTROL", sv_history_control },
- { "HISTFILESIZE", sv_histsize },
- { "HISTIGNORE", sv_histignore },
- { "HISTSIZE", sv_histsize },
- { "HISTTIMEFORMAT", sv_histtimefmt },
-#endif
-
-#if defined (__CYGWIN__)
- { "HOME", sv_home },
-#endif
-
-#if defined (READLINE)
- { "HOSTFILE", sv_hostfile },
-#endif
-
- { "IFS", sv_ifs },
- { "IGNOREEOF", sv_ignoreeof },
-
- { "LANG", sv_locale },
- { "LC_ALL", sv_locale },
- { "LC_COLLATE", sv_locale },
- { "LC_CTYPE", sv_locale },
- { "LC_MESSAGES", sv_locale },
- { "LC_NUMERIC", sv_locale },
- { "LC_TIME", sv_locale },
-
-#if defined (READLINE) && defined (STRICT_POSIX)
- { "LINES", sv_winsize },
-#endif
-
- { "MAIL", sv_mail },
- { "MAILCHECK", sv_mail },
- { "MAILPATH", sv_mail },
-
- { "OPTERR", sv_opterr },
- { "OPTIND", sv_optind },
-
- { "PATH", sv_path },
- { "POSIXLY_CORRECT", sv_strict_posix },
-
-#if defined (READLINE)
- { "TERM", sv_terminal },
- { "TERMCAP", sv_terminal },
- { "TERMINFO", sv_terminal },
-#endif /* READLINE */
-
- { "TEXTDOMAIN", sv_locale },
- { "TEXTDOMAINDIR", sv_locale },
-
-#if defined (HAVE_TZSET)
- { "TZ", sv_tz },
-#endif
-
-#if defined (HISTORY) && defined (BANG_HISTORY)
- { "histchars", sv_histchars },
-#endif /* HISTORY && BANG_HISTORY */
-
- { "ignoreeof", sv_ignoreeof },
-
- { (char *)0, (sh_sv_func_t *)0 }
-};
-
-#define N_SPECIAL_VARS (sizeof (special_vars) / sizeof (special_vars[0]) - 1)
-
-static int
-sv_compare (sv1, sv2)
- struct name_and_function *sv1, *sv2;
-{
- int r;
-
- if ((r = sv1->name[0] - sv2->name[0]) == 0)
- r = strcmp (sv1->name, sv2->name);
- return r;
-}
-
-static inline int
-find_special_var (name)
- const char *name;
-{
- register int i, r;
-
- for (i = 0; special_vars[i].name; i++)
- {
- r = special_vars[i].name[0] - name[0];
- if (r == 0)
- r = strcmp (special_vars[i].name, name);
- if (r == 0)
- return i;
- else if (r > 0)
- /* Can't match any of rest of elements in sorted list. Take this out
- if it causes problems in certain environments. */
- break;
- }
- return -1;
-}
-
-/* The variable in NAME has just had its state changed. Check to see if it
- is one of the special ones where something special happens. */
-void
-stupidly_hack_special_variables (name)
- char *name;
-{
- static int sv_sorted = 0;
- int i;
-
- if (sv_sorted == 0) /* shouldn't need, but it's fairly cheap. */
- {
- qsort (special_vars, N_SPECIAL_VARS, sizeof (special_vars[0]),
- (QSFUNC *)sv_compare);
- sv_sorted = 1;
- }
-
- i = find_special_var (name);
- if (i != -1)
- (*(special_vars[i].function)) (name);
-}
-
-/* Special variables that need hooks to be run when they are unset as part
- of shell reinitialization should have their sv_ functions run here. */
-void
-reinit_special_variables ()
-{
-#if defined (READLINE)
- sv_comp_wordbreaks ("COMP_WORDBREAKS");
-#endif
- sv_globignore ("GLOBIGNORE");
- sv_opterr ("OPTERR");
-}
-
-void
-sv_ifs (name)
- char *name;
-{
- SHELL_VAR *v;
-
- v = find_variable ("IFS");
- setifs (v);
-}
-
-/* What to do just after the PATH variable has changed. */
-void
-sv_path (name)
- char *name;
-{
- /* hash -r */
- phash_flush ();
-}
-
-/* What to do just after one of the MAILxxxx variables has changed. NAME
- is the name of the variable. This is called with NAME set to one of
- MAIL, MAILCHECK, or MAILPATH. */
-void
-sv_mail (name)
- char *name;
-{
- /* If the time interval for checking the files has changed, then
- reset the mail timer. Otherwise, one of the pathname vars
- to the users mailbox has changed, so rebuild the array of
- filenames. */
- if (name[4] == 'C') /* if (strcmp (name, "MAILCHECK") == 0) */
- reset_mail_timer ();
- else
- {
- free_mail_files ();
- remember_mail_dates ();
- }
-}
-
-void
-sv_funcnest (name)
- char *name;
-{
- SHELL_VAR *v;
- intmax_t num;
-
- v = find_variable (name);
- if (v == 0)
- funcnest_max = 0;
- else if (legal_number (value_cell (v), &num) == 0)
- funcnest_max = 0;
- else
- funcnest_max = num;
-}
-
-/* What to do when GLOBIGNORE changes. */
-void
-sv_globignore (name)
- char *name;
-{
- if (privileged_mode == 0)
- setup_glob_ignore (name);
-}
-
-#if defined (READLINE)
-void
-sv_comp_wordbreaks (name)
- char *name;
-{
- SHELL_VAR *sv;
-
- sv = find_variable (name);
- if (sv == 0)
- reset_completer_word_break_chars ();
-}
-
-/* What to do just after one of the TERMxxx variables has changed.
- If we are an interactive shell, then try to reset the terminal
- information in readline. */
-void
-sv_terminal (name)
- char *name;
-{
- if (interactive_shell && no_line_editing == 0)
- rl_reset_terminal (get_string_value ("TERM"));
-}
-
-void
-sv_hostfile (name)
- char *name;
-{
- SHELL_VAR *v;
-
- v = find_variable (name);
- if (v == 0)
- clear_hostname_list ();
- else
- hostname_list_initialized = 0;
-}
-
-#if defined (STRICT_POSIX)
-/* In strict posix mode, we allow assignments to LINES and COLUMNS (and values
- found in the initial environment) to override the terminal size reported by
- the kernel. */
-void
-sv_winsize (name)
- char *name;
-{
- SHELL_VAR *v;
- intmax_t xd;
- int d;
-
- if (posixly_correct == 0 || interactive_shell == 0 || no_line_editing)
- return;
-
- v = find_variable (name);
- if (v == 0 || var_isnull (v))
- rl_reset_screen_size ();
- else
- {
- if (legal_number (value_cell (v), &xd) == 0)
- return;
- winsize_assignment = 1;
- d = xd; /* truncate */
- if (name[0] == 'L') /* LINES */
- rl_set_screen_size (d, -1);
- else /* COLUMNS */
- rl_set_screen_size (-1, d);
- winsize_assignment = 0;
- }
-}
-#endif /* STRICT_POSIX */
-#endif /* READLINE */
-
-/* Update the value of HOME in the export environment so tilde expansion will
- work on cygwin. */
-#if defined (__CYGWIN__)
-sv_home (name)
- char *name;
-{
- array_needs_making = 1;
- maybe_make_export_env ();
-}
-#endif
-
-#if defined (HISTORY)
-/* What to do after the HISTSIZE or HISTFILESIZE variables change.
- If there is a value for this HISTSIZE (and it is numeric), then stifle
- the history. Otherwise, if there is NO value for this variable,
- unstifle the history. If name is HISTFILESIZE, and its value is
- numeric, truncate the history file to hold no more than that many
- lines. */
-void
-sv_histsize (name)
- char *name;
-{
- char *temp;
- intmax_t num;
- int hmax;
-
- temp = get_string_value (name);
-
- if (temp && *temp)
- {
- if (legal_number (temp, &num))
- {
- hmax = num;
- if (hmax < 0 && name[4] == 'S')
- unstifle_history (); /* unstifle history if HISTSIZE < 0 */
- else if (name[4] == 'S')
- {
- stifle_history (hmax);
- hmax = where_history ();
- if (history_lines_this_session > hmax)
- history_lines_this_session = hmax;
- }
- else if (hmax >= 0) /* truncate HISTFILE if HISTFILESIZE >= 0 */
- {
- history_truncate_file (get_string_value ("HISTFILE"), hmax);
- /* If we just shrank the history file to fewer lines than we've
- already read, make sure we adjust our idea of how many lines
- we have read from the file. */
- if (hmax < history_lines_in_file)
- history_lines_in_file = hmax;
- }
- }
- }
- else if (name[4] == 'S')
- unstifle_history ();
-}
-
-/* What to do after the HISTIGNORE variable changes. */
-void
-sv_histignore (name)
- char *name;
-{
- setup_history_ignore (name);
-}
-
-/* What to do after the HISTCONTROL variable changes. */
-void
-sv_history_control (name)
- char *name;
-{
- char *temp;
- char *val;
- int tptr;
-
- history_control = 0;
- temp = get_string_value (name);
-
- if (temp == 0 || *temp == 0)
- return;
-
- tptr = 0;
- while (val = extract_colon_unit (temp, &tptr))
- {
- if (STREQ (val, "ignorespace"))
- history_control |= HC_IGNSPACE;
- else if (STREQ (val, "ignoredups"))
- history_control |= HC_IGNDUPS;
- else if (STREQ (val, "ignoreboth"))
- history_control |= HC_IGNBOTH;
- else if (STREQ (val, "erasedups"))
- history_control |= HC_ERASEDUPS;
-
- free (val);
- }
-}
-
-#if defined (BANG_HISTORY)
-/* Setting/unsetting of the history expansion character. */
-void
-sv_histchars (name)
- char *name;
-{
- char *temp;
-
- temp = get_string_value (name);
- if (temp)
- {
- history_expansion_char = *temp;
- if (temp[0] && temp[1])
- {
- history_subst_char = temp[1];
- if (temp[2])
- history_comment_char = temp[2];
- }
- }
- else
- {
- history_expansion_char = '!';
- history_subst_char = '^';
- history_comment_char = '#';
- }
-}
-#endif /* BANG_HISTORY */
-
-void
-sv_histtimefmt (name)
- char *name;
-{
- SHELL_VAR *v;
-
- if (v = find_variable (name))
- {
- if (history_comment_char == 0)
- history_comment_char = '#';
- }
- history_write_timestamps = (v != 0);
-}
-#endif /* HISTORY */
-
-#if defined (HAVE_TZSET)
-void
-sv_tz (name)
- char *name;
-{
- if (chkexport (name))
- tzset ();
-}
-#endif
-
-/* If the variable exists, then the value of it can be the number
- of times we actually ignore the EOF. The default is small,
- (smaller than csh, anyway). */
-void
-sv_ignoreeof (name)
- char *name;
-{
- SHELL_VAR *tmp_var;
- char *temp;
-
- eof_encountered = 0;
-
- tmp_var = find_variable (name);
- ignoreeof = tmp_var != 0;
- temp = tmp_var ? value_cell (tmp_var) : (char *)NULL;
- if (temp)
- eof_encountered_limit = (*temp && all_digits (temp)) ? atoi (temp) : 10;
- set_shellopts (); /* make sure `ignoreeof' is/is not in $SHELLOPTS */
-}
-
-void
-sv_optind (name)
- char *name;
-{
- SHELL_VAR *var;
- char *tt;
- int s;
-
- var = find_variable ("OPTIND");
- tt = var ? get_variable_value (var) : (char *)NULL;
-
- /* Assume that if var->context < variable_context and variable_context > 0
- then we are restoring the variables's previous state while returning
- from a function. */
- if (tt && *tt)
- {
- s = atoi (tt);
-
- /* According to POSIX, setting OPTIND=1 resets the internal state
- of getopt (). */
- if (s < 0 || s == 1)
- s = 0;
- }
- else
- s = 0;
- getopts_reset (s);
-}
-
-void
-sv_opterr (name)
- char *name;
-{
- char *tt;
-
- tt = get_string_value ("OPTERR");
- sh_opterr = (tt && *tt) ? atoi (tt) : 1;
-}
-
-void
-sv_strict_posix (name)
- char *name;
-{
- SET_INT_VAR (name, posixly_correct);
- posix_initialize (posixly_correct);
-#if defined (READLINE)
- if (interactive_shell)
- posix_readline_initialize (posixly_correct);
-#endif /* READLINE */
- set_shellopts (); /* make sure `posix' is/is not in $SHELLOPTS */
-}
-
-void
-sv_locale (name)
- char *name;
-{
- char *v;
- int r;
-
- v = get_string_value (name);
- if (name[0] == 'L' && name[1] == 'A') /* LANG */
- r = set_lang (name, v);
- else
- r = set_locale_var (name, v); /* LC_*, TEXTDOMAIN* */
-
-#if 1
- if (r == 0 && posixly_correct)
- last_command_exit_value = 1;
-#endif
-}
-
-#if defined (ARRAY_VARS)
-void
-set_pipestatus_array (ps, nproc)
- int *ps;
- int nproc;
-{
- SHELL_VAR *v;
- ARRAY *a;
- ARRAY_ELEMENT *ae;
- register int i;
- char *t, tbuf[INT_STRLEN_BOUND(int) + 1];
-
- v = find_variable ("PIPESTATUS");
- if (v == 0)
- v = make_new_array_variable ("PIPESTATUS");
- if (array_p (v) == 0)
- return; /* Do nothing if not an array variable. */
- a = array_cell (v);
-
- if (a == 0 || array_num_elements (a) == 0)
- {
- for (i = 0; i < nproc; i++) /* was ps[i] != -1, not i < nproc */
- {
- t = inttostr (ps[i], tbuf, sizeof (tbuf));
- array_insert (a, i, t);
- }
- return;
- }
-
- /* Fast case */
- if (array_num_elements (a) == nproc && nproc == 1)
- {
- ae = element_forw (a->head);
- free (element_value (ae));
- ae->value = itos (ps[0]);
- }
- else if (array_num_elements (a) <= nproc)
- {
- /* modify in array_num_elements members in place, then add */
- ae = a->head;
- for (i = 0; i < array_num_elements (a); i++)
- {
- ae = element_forw (ae);
- free (element_value (ae));
- ae->value = itos (ps[i]);
- }
- /* add any more */
- for ( ; i < nproc; i++)
- {
- t = inttostr (ps[i], tbuf, sizeof (tbuf));
- array_insert (a, i, t);
- }
- }
- else
- {
- /* deleting elements. it's faster to rebuild the array. */
- array_flush (a);
- for (i = 0; ps[i] != -1; i++)
- {
- t = inttostr (ps[i], tbuf, sizeof (tbuf));
- array_insert (a, i, t);
- }
- }
-}
-
-ARRAY *
-save_pipestatus_array ()
-{
- SHELL_VAR *v;
- ARRAY *a, *a2;
-
- v = find_variable ("PIPESTATUS");
- if (v == 0 || array_p (v) == 0 || array_cell (v) == 0)
- return ((ARRAY *)NULL);
-
- a = array_cell (v);
- a2 = array_copy (array_cell (v));
-
- return a2;
-}
-
-void
-restore_pipestatus_array (a)
- ARRAY *a;
-{
- SHELL_VAR *v;
- ARRAY *a2;
-
- v = find_variable ("PIPESTATUS");
- /* XXX - should we still assign even if existing value is NULL? */
- if (v == 0 || array_p (v) == 0 || array_cell (v) == 0)
- return;
-
- a2 = array_cell (v);
- var_setarray (v, a);
-
- array_dispose (a2);
-}
-#endif
-
-void
-set_pipestatus_from_exit (s)
- int s;
-{
-#if defined (ARRAY_VARS)
- static int v[2] = { 0, -1 };
-
- v[0] = s;
- set_pipestatus_array (v, 1);
-#endif
-}
-
-void
-sv_xtracefd (name)
- char *name;
-{
- SHELL_VAR *v;
- char *t, *e;
- int fd;
- FILE *fp;
-
- v = find_variable (name);
- if (v == 0)
- {
- xtrace_reset ();
- return;
- }
-
- t = value_cell (v);
- if (t == 0 || *t == 0)
- xtrace_reset ();
- else
- {
- fd = (int)strtol (t, &e, 10);
- if (e != t && *e == '\0' && sh_validfd (fd))
- {
- fp = fdopen (fd, "w");
- if (fp == 0)
- internal_error (_("%s: %s: cannot open as FILE"), name, value_cell (v));
- else
- xtrace_set (fd, fp);
- }
- else
- internal_error (_("%s: %s: invalid value for trace file descriptor"), name, value_cell (v));
- }
-}
-
-#define MIN_COMPAT_LEVEL 31
-
-void
-sv_shcompat (name)
- char *name;
-{
- SHELL_VAR *v;
- char *val;
- int tens, ones, compatval;
-
- v = find_variable (name);
- if (v == 0)
- {
- shell_compatibility_level = DEFAULT_COMPAT_LEVEL;
- set_compatibility_opts ();
- return;
- }
- val = value_cell (v);
- if (val == 0 || *val == '\0')
- {
- shell_compatibility_level = DEFAULT_COMPAT_LEVEL;
- set_compatibility_opts ();
- return;
- }
- /* Handle decimal-like compatibility version specifications: 4.2 */
- if (isdigit (val[0]) && val[1] == '.' && isdigit (val[2]) && val[3] == 0)
- {
- tens = val[0] - '0';
- ones = val[2] - '0';
- compatval = tens*10 + ones;
- }
- /* Handle integer-like compatibility version specifications: 42 */
- else if (isdigit (val[0]) && isdigit (val[1]) && val[2] == 0)
- {
- tens = val[0] - '0';
- ones = val[1] - '0';
- compatval = tens*10 + ones;
- }
- else
- {
-compat_error:
- internal_error (_("%s: %s: compatibility value out of range"), name, val);
- shell_compatibility_level = DEFAULT_COMPAT_LEVEL;
- set_compatibility_opts ();
- return;
- }
-
- if (compatval < MIN_COMPAT_LEVEL || compatval > DEFAULT_COMPAT_LEVEL)
- goto compat_error;
-
- shell_compatibility_level = compatval;
- set_compatibility_opts ();
-}
-
-#if defined (JOB_CONTROL)
-void
-sv_childmax (name)
- char *name;
-{
- char *tt;
- int s;
-
- tt = get_string_value (name);
- s = (tt && *tt) ? atoi (tt) : 0;
- set_maxchild (s);
-}
-#endif
projects / thirdparty / bash.git / commitdiff
