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)
+
--- /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-big/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
--- /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 */
cross-build d
doc d
examples d
-examples/obashdb d
+#examples/obashdb d
examples/complete d
examples/functions d
examples/scripts d
-examples/scripts.v2 d
-examples/scripts.noah d
+#examples/scripts.v2 d
+#examples/scripts.noah d
examples/startup-files d
-examples/startup-files/apple d
+#examples/startup-files/apple d
examples/misc d
examples/loadables d
examples/loadables/perl d
support/rlvers.sh f 755
examples/INDEX.txt f
examples/INDEX.html f
-examples/obashdb/PERMISSION f
-examples/obashdb/README f
-examples/obashdb/bashdb f
-examples/obashdb/bashdb.el f
+#examples/obashdb/PERMISSION f
+#examples/obashdb/README f
+#examples/obashdb/bashdb f
+#examples/obashdb/bashdb.el f
examples/complete/bash_completion f
examples/complete/cdfunc f
examples/complete/complete-examples f
-examples/complete/complete.ianmac f
-examples/complete/complete2.ianmac f
-examples/complete/complete.freebsd f
-examples/complete/complete.gnu-longopt f
+#examples/complete/complete.ianmac f
+#examples/complete/complete2.ianmac f
+#examples/complete/complete.freebsd f
+#examples/complete/complete.gnu-longopt f
examples/complete/bashcc-1.0.1.tar.gz f
examples/loadables/README f
examples/loadables/template.c f
examples/loadables/perl/README f
examples/loadables/perl/bperl.c f
examples/loadables/perl/iperl.c f
+#examples/loadables/sprintf.c f
+#examples/loadables/xtitle.c f
examples/functions/array-stuff f
examples/functions/array-to-string f
examples/functions/autoload f
examples/functions/autoload.v2 f
examples/functions/autoload.v3 f
examples/functions/basename f
-examples/functions/basename2 f
-examples/functions/coproc.bash f
-examples/functions/coshell.README f
-examples/functions/coshell.bash f
+#examples/functions/basename2 f
+#examples/functions/coproc.bash f
+#examples/functions/coshell.README f
+#examples/functions/coshell.bash f
examples/functions/csh-compat f
-examples/functions/dirfuncs f
+#examples/functions/dirfuncs f
examples/functions/dirname f
-examples/functions/emptydir f
+#examples/functions/emptydir f
examples/functions/exitstat f
examples/functions/external f
examples/functions/fact f
examples/functions/fstty f
examples/functions/func f
-examples/functions/gethtml f
-examples/functions/getoptx.bash f
+#examples/functions/gethtml f
+#examples/functions/getoptx.bash f
examples/functions/inetaddr f
examples/functions/inpath f
-examples/functions/isnum.bash f
+#examples/functions/isnum.bash f
examples/functions/isnum2 f
examples/functions/isvalidip f
-examples/functions/jdate.bash f
-examples/functions/jj.bash f
-examples/functions/keep f
+#examples/functions/jdate.bash f
+#examples/functions/jj.bash f
+#examples/functions/keep f
examples/functions/ksh-cd f
examples/functions/ksh-compat-test f
examples/functions/kshenv f
examples/functions/login f
-examples/functions/lowercase f
-examples/functions/manpage f
-examples/functions/mhfold f
-examples/functions/newdirstack.bsh f
+#examples/functions/lowercase f
+#examples/functions/manpage f
+#examples/functions/mhfold f
+#examples/functions/newdirstack.bsh f
examples/functions/notify.bash f
#examples/functions/pathfuncs f
#examples/functions/recurse f
-examples/functions/repeat2 f
-examples/functions/repeat3 f
+#examples/functions/repeat2 f
+#examples/functions/repeat3 f
examples/functions/seq f
examples/functions/seq2 f
examples/functions/shcat f
examples/functions/shcat2 f
examples/functions/sort-pos-params f
+#examples/functions/sqroot f
examples/functions/substr f
examples/functions/substr2 f
-examples/functions/term f
+#examples/functions/term f
examples/functions/whatis f
examples/functions/whence f
examples/functions/which f
-examples/functions/xalias.bash f
-examples/functions/xfind.bash f
-examples/scripts/adventure.sh f
-examples/scripts/bash-hexdump.sh f
-examples/scripts/bcsh.sh f
+#examples/functions/xalias.bash f
+#examples/functions/xfind.bash f
+#examples/scripts/adventure.sh f
+#examples/scripts/bash-hexdump.sh f
+#examples/scripts/bcsh.sh f
examples/scripts/cat.sh f
examples/scripts/center f
-examples/scripts/dd-ex.sh f
-examples/scripts/fixfiles.bash f
-examples/scripts/hanoi.bash f
+#examples/scripts/dd-ex.sh f
+#examples/scripts/fixfiles.bash f
+#examples/scripts/hanoi.bash f
examples/scripts/inpath f
-examples/scripts/krand.bash f
-examples/scripts/line-input.bash f
-examples/scripts/nohup.bash f
-examples/scripts/precedence f
-examples/scripts/randomcard.bash f
-examples/scripts/scrollbar f
-examples/scripts/scrollbar2 f
-examples/scripts/self-repro f
-examples/scripts/showperm.bash f
+#examples/scripts/krand.bash f
+#examples/scripts/line-input.bash f
+#examples/scripts/nohup.bash f
+#examples/scripts/precedence f
+#examples/scripts/randomcard.bash f
+#examples/scripts/scrollbar f
+#examples/scripts/scrollbar2 f
+#examples/scripts/self-repro f
+#examples/scripts/showperm.bash f
examples/scripts/shprompt f
examples/scripts/spin.bash f
-examples/scripts/timeout f
-examples/scripts/timeout2 f
-examples/scripts/timeout3 f
-examples/scripts/vtree2 f
-examples/scripts/vtree3 f
-examples/scripts/vtree3a f
+#examples/scripts/timeout f
+#examples/scripts/timeout2 f
+#examples/scripts/timeout3 f
+#examples/scripts/vtree2 f
+#examples/scripts/vtree3 f
+#examples/scripts/vtree3a f
#examples/scripts/websrv.sh f
examples/scripts/xterm_title f
examples/scripts/zprintf f
examples/startup-files/Bash_profile f
examples/startup-files/bash-profile f
examples/startup-files/bashrc f
-examples/startup-files/apple/README f
-examples/startup-files/apple/aliases f
-examples/startup-files/apple/bash.defaults f
-examples/startup-files/apple/environment f
-examples/startup-files/apple/login f
-examples/startup-files/apple/logout f
-examples/startup-files/apple/rc f
-examples/misc/suncmd.termcap f
+#examples/startup-files/apple/README f
+#examples/startup-files/apple/aliases f
+#examples/startup-files/apple/bash.defaults f
+#examples/startup-files/apple/environment f
+#examples/startup-files/apple/login f
+#examples/startup-files/apple/logout f
+#examples/startup-files/apple/rc f
+#examples/misc/suncmd.termcap f
examples/misc/aliasconv.sh f
examples/misc/aliasconv.bash f
examples/misc/cshtobash f
tests/dbg-support2.tests f
tests/dbg-support3.sub f
tests/dollar-at-star f
+tests/dollar-at-star1.sub f
tests/dollar-at1.sub f
tests/dollar-at2.sub f
tests/dollar-at3.sub f
tests/misc/test-minus-e.1 f
tests/misc/test-minus-e.2 f
tests/misc/wait-bg.tests f
-examples/scripts.v2/PERMISSION f
-examples/scripts.v2/README f
-examples/scripts.v2/arc2tarz f
-examples/scripts.v2/bashrand f
-examples/scripts.v2/cal2day.bash f
-examples/scripts.v2/cdhist.bash f
-examples/scripts.v2/corename f
-examples/scripts.v2/fman f
-examples/scripts.v2/frcp f
-examples/scripts.v2/lowercase f
-examples/scripts.v2/ncp f
-examples/scripts.v2/newext f
-examples/scripts.v2/nmv f
-examples/scripts.v2/pages f
-examples/scripts.v2/pf f
-examples/scripts.v2/ren f
-examples/scripts.v2/rename f
-examples/scripts.v2/repeat f
-examples/scripts.v2/untar f
-examples/scripts.v2/uudec f
-examples/scripts.v2/uuenc f
-examples/scripts.v2/vtree f
-examples/scripts.v2/where f
-examples/scripts.v2/pmtop f
-examples/scripts.v2/shprof f
-examples/scripts.noah/PERMISSION f
-examples/scripts.noah/README f
-examples/scripts.noah/aref.bash f
-examples/scripts.noah/bash.sub.bash f
-examples/scripts.noah/bash_version.bash f
-examples/scripts.noah/meta.bash f
-examples/scripts.noah/mktmp.bash f
-examples/scripts.noah/number.bash f
-examples/scripts.noah/prompt.bash f
-examples/scripts.noah/remap_keys.bash f
-examples/scripts.noah/require.bash f
-examples/scripts.noah/send_mail.bash f
-examples/scripts.noah/shcat.bash f
-examples/scripts.noah/source.bash f
-examples/scripts.noah/string.bash f
-examples/scripts.noah/stty.bash f
-examples/scripts.noah/y_or_n_p.bash f
+#examples/scripts.v2/PERMISSION f
+#examples/scripts.v2/README f
+#examples/scripts.v2/arc2tarz f
+#examples/scripts.v2/bashrand f
+#examples/scripts.v2/cal2day.bash f
+#examples/scripts.v2/cdhist.bash f
+#examples/scripts.v2/corename f
+#examples/scripts.v2/fman f
+#examples/scripts.v2/frcp f
+#examples/scripts.v2/lowercase f
+#examples/scripts.v2/ncp f
+#examples/scripts.v2/newext f
+#examples/scripts.v2/nmv f
+#examples/scripts.v2/pages f
+#examples/scripts.v2/pf f
+#examples/scripts.v2/ren f
+#examples/scripts.v2/rename f
+#examples/scripts.v2/repeat f
+#examples/scripts.v2/untar f
+#examples/scripts.v2/uudec f
+#examples/scripts.v2/uuenc f
+#examples/scripts.v2/vtree f
+#examples/scripts.v2/where f
+#examples/scripts.v2/pmtop f
+#examples/scripts.v2/shprof f
+#examples/scripts.noah/PERMISSION f
+#examples/scripts.noah/README f
+#examples/scripts.noah/aref.bash f
+#examples/scripts.noah/bash.sub.bash f
+#examples/scripts.noah/bash_version.bash f
+#examples/scripts.noah/meta.bash f
+#examples/scripts.noah/mktmp.bash f
+#examples/scripts.noah/number.bash f
+#examples/scripts.noah/prompt.bash f
+#examples/scripts.noah/remap_keys.bash f
+#examples/scripts.noah/require.bash f
+#examples/scripts.noah/send_mail.bash f
+#examples/scripts.noah/shcat.bash f
+#examples/scripts.noah/source.bash f
+#examples/scripts.noah/string.bash f
+#examples/scripts.noah/stty.bash f
+#examples/scripts.noah/y_or_n_p.bash f
--- /dev/null
+#
+# Master distribution manifest for bash
+#
+#
+# Filename type
+#
+CWRU d
+CWRU/misc d
+builtins d
+cross-build d
+doc d
+examples d
+examples/obashdb d
+examples/complete d
+examples/functions d
+examples/scripts d
+examples/scripts.v2 d
+examples/scripts.noah d
+examples/startup-files d
+examples/startup-files/apple d
+examples/misc d
+examples/loadables d
+examples/loadables/perl d
+include d
+lib d
+lib/glob d
+lib/glob/doc d
+lib/intl d
+lib/malloc d
+lib/readline d
+lib/readline/doc d
+lib/readline/examples d
+lib/sh d
+lib/termcap d
+lib/tilde d
+m4 d
+po d
+support d
+tests d
+tests/misc d
+ABOUT-NLS f
+ChangeLog s CWRU/changelog
+CHANGES f
+COMPAT f
+COPYING f
+INSTALL f
+MANIFEST f
+NEWS f
+NOTES f
+POSIX f
+README f
+RBASH f
+AUTHORS f
+Y2K f
+configure.ac f
+configure f 755
+Makefile.in f
+config-top.h f
+config-bot.h f
+config.h.in f
+aclocal.m4 f
+array.c f
+arrayfunc.c f
+assoc.c f
+eval.c f
+print_cmd.c f
+general.c f
+list.c f
+locale.c f
+stringlib.c f
+variables.c f
+make_cmd.c f
+copy_cmd.c f
+unwind_prot.c f
+dispose_cmd.c f
+bashhist.c f
+hashcmd.c f
+hashlib.c f
+parse.y f
+pathexp.c f
+subst.c f
+shell.c f
+trap.c f
+sig.c f
+siglist.c f
+version.c f
+flags.c f
+jobs.c f
+input.c f
+mailcheck.c f
+test.c f
+expr.c f
+alias.c f
+execute_cmd.c f
+findcmd.c f
+redir.c f
+bashline.c f
+braces.c f
+bracecomp.c f
+nojobs.c f
+error.c f
+xmalloc.c f
+pcomplete.c f
+pcomplib.c f
+mksyntax.c f
+alias.h f
+builtins.h f
+bashhist.h f
+bashline.h f
+conftypes.h f
+patchlevel.h f
+variables.h f
+array.h f
+arrayfunc.h f
+assoc.h f
+jobs.h f
+findcmd.h f
+hashlib.h f
+quit.h f
+flags.h f
+shell.h f
+syntax.h f
+pathexp.h f
+parser.h f
+pcomplete.h f
+sig.h f
+test.h f
+trap.h f
+general.h f
+unwind_prot.h f
+input.h f
+error.h f
+command.h f
+externs.h f
+siglist.h f
+subst.h f
+dispose_cmd.h f
+hashcmd.h f
+bashansi.h f
+bashjmp.h f
+bashintl.h f
+make_cmd.h f
+execute_cmd.h f
+redir.h f
+bashtypes.h f
+mailcheck.h f
+xmalloc.h f
+y.tab.c f
+y.tab.h f
+parser-built f
+pathnames.h.in f
+builtins/Makefile.in f
+builtins/alias.def f
+builtins/bind.def f
+builtins/break.def f
+builtins/builtin.def f
+builtins/caller.def f
+builtins/cd.def f
+builtins/colon.def f
+builtins/command.def f
+builtins/complete.def f
+builtins/common.c f
+builtins/declare.def f
+builtins/echo.def f
+builtins/enable.def f
+builtins/eval.def f
+builtins/evalfile.c f
+builtins/evalstring.c f
+builtins/exec.def f
+builtins/exit.def f
+builtins/fc.def f
+builtins/fg_bg.def f
+builtins/gen-helpfiles.c f
+builtins/getopt.c f
+builtins/getopt.h f
+builtins/getopts.def f
+builtins/hash.def f
+builtins/help.def f
+builtins/let.def f
+builtins/history.def f
+builtins/jobs.def f
+builtins/kill.def f
+builtins/mapfile.def f
+builtins/mkbuiltins.c f
+builtins/printf.def f
+builtins/pushd.def f
+builtins/read.def f
+builtins/reserved.def f
+builtins/return.def f
+builtins/set.def f
+builtins/setattr.def f
+builtins/shift.def f
+builtins/shopt.def f
+builtins/source.def f
+builtins/suspend.def f
+builtins/test.def f
+builtins/times.def f
+builtins/trap.def f
+builtins/type.def f
+builtins/ulimit.def f
+builtins/umask.def f
+builtins/wait.def f
+builtins/psize.c f
+builtins/psize.sh f
+builtins/inlib.def f
+builtins/bashgetopt.c f
+builtins/common.h f
+builtins/bashgetopt.h f
+cross-build/cygwin32.cache f
+cross-build/x86-beos.cache f
+cross-build/opennt.cache f
+include/ansi_stdlib.h f
+include/chartypes.h f
+include/filecntl.h f
+include/gettext.h f
+include/maxpath.h f
+include/memalloc.h f
+include/ocache.h f
+include/posixdir.h f
+include/posixjmp.h f
+include/posixselect.h f
+include/posixstat.h f
+include/posixtime.h f
+include/posixwait.h f
+include/shmbchar.h f
+include/shmbutil.h f
+include/shtty.h f
+include/stat-time.h f
+include/stdc.h f
+include/systimes.h f
+include/typemax.h f
+include/unionwait.h f
+lib/glob/Makefile.in f
+lib/glob/sm_loop.c f
+lib/glob/smatch.c f
+lib/glob/strmatch.c f
+lib/glob/strmatch.h f
+lib/glob/glob.c f
+lib/glob/glob.h f
+lib/glob/glob_loop.c f
+lib/glob/gmisc.c f
+lib/glob/xmbsrtowcs.c f
+lib/glob/collsyms.h f
+lib/glob/doc/Makefile f
+lib/glob/doc/glob.texi f
+lib/glob/ndir.h f
+lib/intl/ChangeLog f
+lib/intl/Makefile.in f
+lib/intl/VERSION f
+lib/intl/bindtextdom.c f
+lib/intl/config.charset f
+lib/intl/dcgettext.c f
+lib/intl/dcigettext.c f
+lib/intl/dcngettext.c f
+lib/intl/dgettext.c f
+lib/intl/dngettext.c f
+lib/intl/eval-plural.h f
+lib/intl/explodename.c f
+lib/intl/finddomain.c f
+lib/intl/gettext.c f
+lib/intl/gettextP.h f
+lib/intl/gmo.h f
+lib/intl/hash-string.h f
+lib/intl/intl-compat.c f
+lib/intl/l10nflist.c f
+lib/intl/libgnuintl.h.in f
+lib/intl/loadinfo.h f
+lib/intl/loadmsgcat.c f
+lib/intl/localcharset.c f
+lib/intl/localcharset.h f
+lib/intl/locale.alias f
+lib/intl/localealias.c f
+lib/intl/localename.c f
+lib/intl/log.c f
+lib/intl/ngettext.c f
+lib/intl/os2compat.c f
+lib/intl/os2compat.h f
+lib/intl/osdep.c f
+lib/intl/plural-exp.c f
+lib/intl/plural-exp.h f
+lib/intl/plural.c f
+lib/intl/plural.y f
+lib/intl/ref-add.sin f
+lib/intl/ref-del.sin f
+lib/intl/relocatable.c f
+lib/intl/relocatable.h f
+lib/intl/textdomain.c f
+lib/malloc/Makefile.in f
+lib/malloc/getpagesize.h f
+lib/malloc/imalloc.h f
+lib/malloc/mstats.h f
+lib/malloc/shmalloc.h f
+lib/malloc/table.h f
+lib/malloc/watch.h f
+lib/malloc/alloca.c f
+lib/malloc/malloc.c f
+lib/malloc/stats.c f
+lib/malloc/table.c f
+lib/malloc/trace.c f
+lib/malloc/watch.c f
+lib/malloc/xmalloc.c f
+lib/malloc/xleaktrace f 755
+lib/malloc/stub.c f
+lib/malloc/i386-alloca.s f
+lib/malloc/x386-alloca.s f
+lib/readline/COPYING f
+lib/readline/Makefile.in f
+lib/readline/ChangeLog f
+lib/readline/README f
+lib/readline/STANDALONE f
+lib/readline/readline.c f
+lib/readline/vi_mode.c f
+lib/readline/emacs_keymap.c f
+lib/readline/vi_keymap.c f
+lib/readline/history.c f
+lib/readline/histexpand.c f
+lib/readline/histsearch.c f
+lib/readline/histfile.c f
+lib/readline/funmap.c f
+lib/readline/keymaps.c f
+lib/readline/util.c f
+lib/readline/terminal.c f
+lib/readline/xfree.c f
+lib/readline/xmalloc.c f
+lib/readline/search.c f
+lib/readline/isearch.c f
+lib/readline/parens.c f
+lib/readline/rltty.c f
+lib/readline/compat.c f
+lib/readline/complete.c f
+lib/readline/bind.c f
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+tests/redir5.sub f
+tests/redir6.sub f
+tests/redir7.sub f
+tests/redir8.sub f
+tests/redir9.sub f
+tests/redir10.sub f
+tests/rhs-exp.tests f
+tests/rhs-exp.right f
+tests/rhs-exp1.sub f
+tests/rsh.tests f
+tests/rsh.right f
+tests/run-all f
+tests/run-minimal f
+tests/run-alias f
+tests/run-appendop f
+tests/run-arith-for f
+tests/run-arith f
+tests/run-array f
+tests/run-array2 f
+tests/run-assoc f
+tests/run-braces f
+tests/run-builtins f
+tests/run-case f
+tests/run-casemod f
+tests/run-comsub f
+tests/run-comsub-eof f
+tests/run-comsub-posix f
+tests/run-cond f
+tests/run-coproc f
+tests/run-cprint f
+tests/run-dbg-support f
+tests/run-dbg-support2 f
+tests/run-dirstack f
+tests/run-dollars f
+tests/run-errors f
+tests/run-execscript f
+tests/run-exp-tests f
+tests/run-extglob f
+tests/run-extglob2 f
+tests/run-extglob3 f
+tests/run-func f
+tests/run-getopts f
+tests/run-glob-test f
+tests/run-globstar f
+tests/run-heredoc f
+tests/run-herestr f
+tests/run-histexpand f
+tests/run-history f
+tests/run-ifs f
+tests/run-ifs-posix f
+tests/run-input-test f
+tests/run-intl f
+tests/run-iquote f
+tests/run-invert f
+tests/run-jobs f
+tests/run-lastpipe f
+tests/run-mapfile f
+tests/run-more-exp f
+tests/run-nameref f
+tests/run-new-exp f
+tests/run-nquote f
+tests/run-nquote1 f
+tests/run-nquote2 f
+tests/run-nquote3 f
+tests/run-nquote4 f
+tests/run-nquote5 f
+tests/run-posix2 f
+tests/run-posixexp f
+tests/run-posixexp2 f
+tests/run-posixpat f
+tests/run-posixpipe f
+tests/run-precedence f
+tests/run-printf f
+tests/run-quote f
+tests/run-read f
+tests/run-redir f
+tests/run-rhs-exp f
+tests/run-rsh f
+tests/run-set-e f
+tests/run-set-x f
+tests/run-shopt f
+tests/run-strip f
+tests/run-test f
+tests/run-tilde f
+tests/run-tilde2 f
+tests/run-trap f
+tests/run-type f
+tests/run-varenv f
+tests/run-vredir f
+tests/set-e.tests f
+tests/set-e1.sub f
+tests/set-e2.sub f
+tests/set-e3.sub f
+tests/set-e3a.sub f
+tests/set-e.right f
+tests/set-x.tests f
+tests/set-x1.sub f
+tests/set-x.right f
+tests/shopt.tests f
+tests/shopt.right f
+tests/strip.tests f
+tests/strip.right f
+tests/test.tests f
+tests/test.right f
+tests/tilde.tests f
+tests/tilde.right f
+tests/tilde2.tests f
+tests/tilde2.right f
+tests/trap.tests f
+tests/trap.right f
+tests/trap1.sub f 755
+tests/trap2.sub f 755
+tests/trap2a.sub f 755
+tests/trap3.sub f
+tests/trap4.sub f
+tests/type.tests f
+tests/type.right f
+tests/type1.sub f
+tests/type2.sub f
+tests/type3.sub f
+tests/type4.sub f
+tests/unicode1.sub f
+tests/unicode2.sub f
+tests/varenv.right f
+tests/varenv.sh f
+tests/varenv1.sub f
+tests/varenv2.sub f
+tests/varenv3.sub f
+tests/varenv4.sub f
+tests/varenv5.sub f
+tests/version f
+tests/version.mini f
+tests/vredir.tests f
+tests/vredir.right f
+tests/vredir1.sub f
+tests/vredir2.sub f
+tests/vredir3.sub f
+tests/vredir4.sub f
+tests/vredir5.sub f
+tests/vredir6.sub f
+tests/misc/dev-tcp.tests f
+tests/misc/perf-script f
+tests/misc/perftest f
+tests/misc/read-nchars.tests f
+tests/misc/redir-t2.sh f
+tests/misc/run-r2.sh f
+tests/misc/sigint-1.sh f
+tests/misc/sigint-2.sh f
+tests/misc/sigint-3.sh f
+tests/misc/sigint-4.sh f
+tests/misc/test-minus-e.1 f
+tests/misc/test-minus-e.2 f
+tests/misc/wait-bg.tests f
+examples/scripts.v2/PERMISSION f
+examples/scripts.v2/README f
+examples/scripts.v2/arc2tarz f
+examples/scripts.v2/bashrand f
+examples/scripts.v2/cal2day.bash f
+examples/scripts.v2/cdhist.bash f
+examples/scripts.v2/corename f
+examples/scripts.v2/fman f
+examples/scripts.v2/frcp f
+examples/scripts.v2/lowercase f
+examples/scripts.v2/ncp f
+examples/scripts.v2/newext f
+examples/scripts.v2/nmv f
+examples/scripts.v2/pages f
+examples/scripts.v2/pf f
+examples/scripts.v2/ren f
+examples/scripts.v2/rename f
+examples/scripts.v2/repeat f
+examples/scripts.v2/untar f
+examples/scripts.v2/uudec f
+examples/scripts.v2/uuenc f
+examples/scripts.v2/vtree f
+examples/scripts.v2/where f
+examples/scripts.v2/pmtop f
+examples/scripts.v2/shprof f
+examples/scripts.noah/PERMISSION f
+examples/scripts.noah/README f
+examples/scripts.noah/aref.bash f
+examples/scripts.noah/bash.sub.bash f
+examples/scripts.noah/bash_version.bash f
+examples/scripts.noah/meta.bash f
+examples/scripts.noah/mktmp.bash f
+examples/scripts.noah/number.bash f
+examples/scripts.noah/prompt.bash f
+examples/scripts.noah/remap_keys.bash f
+examples/scripts.noah/require.bash f
+examples/scripts.noah/send_mail.bash f
+examples/scripts.noah/shcat.bash f
+examples/scripts.noah/source.bash f
+examples/scripts.noah/string.bash f
+examples/scripts.noah/stty.bash f
+examples/scripts.noah/y_or_n_p.bash f
}
],
bash_cv_wcwidth_broken=yes, bash_cv_wcwdith_broken=no)])
-if test $bash_cv_wcwidth_broken = yes; then
+if test "$bash_cv_wcwidth_broken" = yes; then
AC_DEFINE(WCWIDTH_BROKEN, 1, [wcwidth is usually not broken])
fi
--- /dev/null
+dnl
+dnl Bash specific tests
+dnl
+dnl Some derived from PDKSH 5.1.3 autoconf tests
+dnl
+
+AC_DEFUN(BASH_C_LONG_LONG,
+[AC_CACHE_CHECK(for long long, ac_cv_c_long_long,
+[if test "$GCC" = yes; then
+ ac_cv_c_long_long=yes
+else
+AC_TRY_RUN([
+int
+main()
+{
+long long foo = 0;
+exit(sizeof(long long) < sizeof(long));
+}
+], ac_cv_c_long_long=yes, ac_cv_c_long_long=no)
+fi])
+if test $ac_cv_c_long_long = yes; then
+ AC_DEFINE(HAVE_LONG_LONG, 1, [Define if the `long long' type works.])
+fi
+])
+
+dnl
+dnl This is very similar to AC_C_LONG_DOUBLE, with the fix for IRIX
+dnl (< changed to <=) added.
+dnl
+AC_DEFUN(BASH_C_LONG_DOUBLE,
+[AC_CACHE_CHECK(for long double, ac_cv_c_long_double,
+[if test "$GCC" = yes; then
+ ac_cv_c_long_double=yes
+else
+AC_TRY_RUN([
+int
+main()
+{
+ /* The Stardent Vistra knows sizeof(long double), but does not
+ support it. */
+ long double foo = 0.0;
+ /* On Ultrix 4.3 cc, long double is 4 and double is 8. */
+ /* On IRIX 5.3, the compiler converts long double to double with a warning,
+ but compiles this successfully. */
+ exit(sizeof(long double) <= sizeof(double));
+}
+], ac_cv_c_long_double=yes, ac_cv_c_long_double=no)
+fi])
+if test $ac_cv_c_long_double = yes; then
+ AC_DEFINE(HAVE_LONG_DOUBLE, 1, [Define if the `long double' type works.])
+fi
+])
+
+dnl
+dnl Check for <inttypes.h>. This is separated out so that it can be
+dnl AC_REQUIREd.
+dnl
+dnl BASH_HEADER_INTTYPES
+AC_DEFUN(BASH_HEADER_INTTYPES,
+[
+ AC_CHECK_HEADERS(inttypes.h)
+])
+
+dnl
+dnl check for typedef'd symbols in header files, but allow the caller to
+dnl specify the include files to be checked in addition to the default
+dnl
+dnl BASH_CHECK_TYPE(TYPE, HEADERS, DEFAULT[, VALUE-IF-FOUND])
+AC_DEFUN(BASH_CHECK_TYPE,
+[
+AC_REQUIRE([AC_HEADER_STDC])dnl
+AC_REQUIRE([BASH_HEADER_INTTYPES])
+AC_MSG_CHECKING(for $1)
+AC_CACHE_VAL(bash_cv_type_$1,
+[AC_EGREP_CPP($1, [#include <sys/types.h>
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <stddef.h>
+#endif
+#if HAVE_INTTYPES_H
+#include <inttypes.h>
+#endif
+#if HAVE_STDINT_H
+#include <stdint.h>
+#endif
+$2
+], bash_cv_type_$1=yes, bash_cv_type_$1=no)])
+AC_MSG_RESULT($bash_cv_type_$1)
+ifelse($#, 4, [if test $bash_cv_type_$1 = yes; then
+ AC_DEFINE($4)
+ fi])
+if test $bash_cv_type_$1 = no; then
+ AC_DEFINE_UNQUOTED($1, $3)
+fi
+])
+
+dnl
+dnl BASH_CHECK_DECL(FUNC)
+dnl
+dnl Check for a declaration of FUNC in stdlib.h and inttypes.h like
+dnl AC_CHECK_DECL
+dnl
+AC_DEFUN(BASH_CHECK_DECL,
+[
+AC_REQUIRE([AC_HEADER_STDC])
+AC_REQUIRE([BASH_HEADER_INTTYPES])
+AC_CACHE_CHECK([for declaration of $1], bash_cv_decl_$1,
+[AC_TRY_LINK(
+[
+#if STDC_HEADERS
+# include <stdlib.h>
+#endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+],
+[return !$1;],
+bash_cv_decl_$1=yes, bash_cv_decl_$1=no)])
+bash_tr_func=HAVE_DECL_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+if test $bash_cv_decl_$1 = yes; then
+ AC_DEFINE_UNQUOTED($bash_tr_func, 1)
+else
+ AC_DEFINE_UNQUOTED($bash_tr_func, 0)
+fi
+])
+
+AC_DEFUN(BASH_DECL_PRINTF,
+[AC_MSG_CHECKING(for declaration of printf in <stdio.h>)
+AC_CACHE_VAL(bash_cv_printf_declared,
+[AC_TRY_RUN([
+#include <stdio.h>
+#ifdef __STDC__
+typedef int (*_bashfunc)(const char *, ...);
+#else
+typedef int (*_bashfunc)();
+#endif
+main()
+{
+_bashfunc pf;
+pf = (_bashfunc) printf;
+exit(pf == 0);
+}
+], bash_cv_printf_declared=yes, bash_cv_printf_declared=no,
+ [AC_MSG_WARN(cannot check printf declaration if cross compiling -- defaulting to yes)
+ bash_cv_printf_declared=yes]
+)])
+AC_MSG_RESULT($bash_cv_printf_declared)
+if test $bash_cv_printf_declared = yes; then
+AC_DEFINE(PRINTF_DECLARED)
+fi
+])
+
+AC_DEFUN(BASH_DECL_SBRK,
+[AC_MSG_CHECKING(for declaration of sbrk in <unistd.h>)
+AC_CACHE_VAL(bash_cv_sbrk_declared,
+[AC_EGREP_HEADER(sbrk, unistd.h,
+ bash_cv_sbrk_declared=yes, bash_cv_sbrk_declared=no)])
+AC_MSG_RESULT($bash_cv_sbrk_declared)
+if test $bash_cv_sbrk_declared = yes; then
+AC_DEFINE(SBRK_DECLARED)
+fi
+])
+
+dnl
+dnl Check for sys_siglist[] or _sys_siglist[]
+dnl
+AC_DEFUN(BASH_DECL_UNDER_SYS_SIGLIST,
+[AC_MSG_CHECKING([for _sys_siglist in signal.h or unistd.h])
+AC_CACHE_VAL(bash_cv_decl_under_sys_siglist,
+[AC_TRY_COMPILE([
+#include <sys/types.h>
+#include <signal.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif], [ char *msg = _sys_siglist[2]; ],
+ bash_cv_decl_under_sys_siglist=yes, bash_cv_decl_under_sys_siglist=no,
+ [AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)])])dnl
+AC_MSG_RESULT($bash_cv_decl_under_sys_siglist)
+if test $bash_cv_decl_under_sys_siglist = yes; then
+AC_DEFINE(UNDER_SYS_SIGLIST_DECLARED)
+fi
+])
+
+AC_DEFUN(BASH_UNDER_SYS_SIGLIST,
+[AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST])
+AC_MSG_CHECKING([for _sys_siglist in system C library])
+AC_CACHE_VAL(bash_cv_under_sys_siglist,
+[AC_TRY_RUN([
+#include <sys/types.h>
+#include <signal.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifndef UNDER_SYS_SIGLIST_DECLARED
+extern char *_sys_siglist[];
+#endif
+main()
+{
+char *msg = (char *)_sys_siglist[2];
+exit(msg == 0);
+}],
+ bash_cv_under_sys_siglist=yes, bash_cv_under_sys_siglist=no,
+ [AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)
+ bash_cv_under_sys_siglist=no])])
+AC_MSG_RESULT($bash_cv_under_sys_siglist)
+if test $bash_cv_under_sys_siglist = yes; then
+AC_DEFINE(HAVE_UNDER_SYS_SIGLIST)
+fi
+])
+
+AC_DEFUN(BASH_SYS_SIGLIST,
+[AC_REQUIRE([AC_DECL_SYS_SIGLIST])
+AC_MSG_CHECKING([for sys_siglist in system C library])
+AC_CACHE_VAL(bash_cv_sys_siglist,
+[AC_TRY_RUN([
+#include <sys/types.h>
+#include <signal.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if !HAVE_DECL_SYS_SIGLIST
+extern char *sys_siglist[];
+#endif
+main()
+{
+char *msg = sys_siglist[2];
+exit(msg == 0);
+}],
+ bash_cv_sys_siglist=yes, bash_cv_sys_siglist=no,
+ [AC_MSG_WARN(cannot check for sys_siglist if cross compiling -- defaulting to no)
+ bash_cv_sys_siglist=no])])
+AC_MSG_RESULT($bash_cv_sys_siglist)
+if test $bash_cv_sys_siglist = yes; then
+AC_DEFINE(HAVE_SYS_SIGLIST)
+fi
+])
+
+dnl Check for the various permutations of sys_siglist and make sure we
+dnl compile in siglist.o if they're not defined
+AC_DEFUN(BASH_CHECK_SYS_SIGLIST, [
+AC_REQUIRE([BASH_SYS_SIGLIST])
+AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST])
+AC_REQUIRE([BASH_FUNC_STRSIGNAL])
+if test "$bash_cv_sys_siglist" = no && test "$bash_cv_under_sys_siglist" = no && test "$bash_cv_have_strsignal" = no; then
+ SIGLIST_O=siglist.o
+else
+ SIGLIST_O=
+fi
+AC_SUBST([SIGLIST_O])
+])
+
+dnl Check for sys_errlist[] and sys_nerr, check for declaration
+AC_DEFUN(BASH_SYS_ERRLIST,
+[AC_MSG_CHECKING([for sys_errlist and sys_nerr])
+AC_CACHE_VAL(bash_cv_sys_errlist,
+[AC_TRY_LINK([#include <errno.h>],
+[extern char *sys_errlist[];
+ extern int sys_nerr;
+ char *msg = sys_errlist[sys_nerr - 1];],
+ bash_cv_sys_errlist=yes, bash_cv_sys_errlist=no)])dnl
+AC_MSG_RESULT($bash_cv_sys_errlist)
+if test $bash_cv_sys_errlist = yes; then
+AC_DEFINE(HAVE_SYS_ERRLIST)
+fi
+])
+
+dnl
+dnl Check if dup2() does not clear the close on exec flag
+dnl
+AC_DEFUN(BASH_FUNC_DUP2_CLOEXEC_CHECK,
+[AC_MSG_CHECKING(if dup2 fails to clear the close-on-exec flag)
+AC_CACHE_VAL(bash_cv_dup2_broken,
+[AC_TRY_RUN([
+#include <sys/types.h>
+#include <fcntl.h>
+main()
+{
+ int fd1, fd2, fl;
+ fd1 = open("/dev/null", 2);
+ if (fcntl(fd1, 2, 1) < 0)
+ exit(1);
+ fd2 = dup2(fd1, 1);
+ if (fd2 < 0)
+ exit(2);
+ fl = fcntl(fd2, 1, 0);
+ /* fl will be 1 if dup2 did not reset the close-on-exec flag. */
+ exit(fl != 1);
+}
+], bash_cv_dup2_broken=yes, bash_cv_dup2_broken=no,
+ [AC_MSG_WARN(cannot check dup2 if cross compiling -- defaulting to no)
+ bash_cv_dup2_broken=no])
+])
+AC_MSG_RESULT($bash_cv_dup2_broken)
+if test $bash_cv_dup2_broken = yes; then
+AC_DEFINE(DUP2_BROKEN)
+fi
+])
+
+AC_DEFUN(BASH_FUNC_STRSIGNAL,
+[AC_MSG_CHECKING([for the existence of strsignal])
+AC_CACHE_VAL(bash_cv_have_strsignal,
+[AC_TRY_LINK([#include <sys/types.h>
+#include <signal.h>],
+[char *s = (char *)strsignal(2);],
+ bash_cv_have_strsignal=yes, bash_cv_have_strsignal=no)])
+AC_MSG_RESULT($bash_cv_have_strsignal)
+if test $bash_cv_have_strsignal = yes; then
+AC_DEFINE(HAVE_STRSIGNAL)
+fi
+])
+
+dnl Check to see if opendir will open non-directories (not a nice thing)
+AC_DEFUN(BASH_FUNC_OPENDIR_CHECK,
+[AC_REQUIRE([AC_HEADER_DIRENT])dnl
+AC_MSG_CHECKING(if opendir() opens non-directories)
+AC_CACHE_VAL(bash_cv_opendir_not_robust,
+[AC_TRY_RUN([
+#include <stdio.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+#if defined(HAVE_DIRENT_H)
+# include <dirent.h>
+#else
+# define dirent direct
+# ifdef HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif /* SYSNDIR */
+# ifdef HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif /* SYSDIR */
+# ifdef HAVE_NDIR_H
+# include <ndir.h>
+# endif
+#endif /* HAVE_DIRENT_H */
+main()
+{
+DIR *dir;
+int fd, err;
+err = mkdir("bash-aclocal", 0700);
+if (err < 0) {
+ perror("mkdir");
+ exit(1);
+}
+unlink("bash-aclocal/not_a_directory");
+fd = open("bash-aclocal/not_a_directory", O_WRONLY|O_CREAT|O_EXCL, 0666);
+write(fd, "\n", 1);
+close(fd);
+dir = opendir("bash-aclocal/not_a_directory");
+unlink("bash-aclocal/not_a_directory");
+rmdir("bash-aclocal");
+exit (dir == 0);
+}], bash_cv_opendir_not_robust=yes,bash_cv_opendir_not_robust=no,
+ [AC_MSG_WARN(cannot check opendir if cross compiling -- defaulting to no)
+ bash_cv_opendir_not_robust=no]
+)])
+AC_MSG_RESULT($bash_cv_opendir_not_robust)
+if test $bash_cv_opendir_not_robust = yes; then
+AC_DEFINE(OPENDIR_NOT_ROBUST)
+fi
+])
+
+dnl
+AC_DEFUN(BASH_TYPE_SIGHANDLER,
+[AC_MSG_CHECKING([whether signal handlers are of type void])
+AC_CACHE_VAL(bash_cv_void_sighandler,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <signal.h>
+#ifdef signal
+#undef signal
+#endif
+#ifdef __cplusplus
+extern "C"
+#endif
+void (*signal ()) ();],
+[int i;], bash_cv_void_sighandler=yes, bash_cv_void_sighandler=no)])dnl
+AC_MSG_RESULT($bash_cv_void_sighandler)
+if test $bash_cv_void_sighandler = yes; then
+AC_DEFINE(VOID_SIGHANDLER)
+fi
+])
+
+dnl
+dnl A signed 16-bit integer quantity
+dnl
+AC_DEFUN(BASH_TYPE_BITS16_T,
+[
+if test "$ac_cv_sizeof_short" = 2; then
+ AC_CHECK_TYPE(bits16_t, short)
+elif test "$ac_cv_sizeof_char" = 2; then
+ AC_CHECK_TYPE(bits16_t, char)
+else
+ AC_CHECK_TYPE(bits16_t, short)
+fi
+])
+
+dnl
+dnl An unsigned 16-bit integer quantity
+dnl
+AC_DEFUN(BASH_TYPE_U_BITS16_T,
+[
+if test "$ac_cv_sizeof_short" = 2; then
+ AC_CHECK_TYPE(u_bits16_t, unsigned short)
+elif test "$ac_cv_sizeof_char" = 2; then
+ AC_CHECK_TYPE(u_bits16_t, unsigned char)
+else
+ AC_CHECK_TYPE(u_bits16_t, unsigned short)
+fi
+])
+
+dnl
+dnl A signed 32-bit integer quantity
+dnl
+AC_DEFUN(BASH_TYPE_BITS32_T,
+[
+if test "$ac_cv_sizeof_int" = 4; then
+ AC_CHECK_TYPE(bits32_t, int)
+elif test "$ac_cv_sizeof_long" = 4; then
+ AC_CHECK_TYPE(bits32_t, long)
+else
+ AC_CHECK_TYPE(bits32_t, int)
+fi
+])
+
+dnl
+dnl An unsigned 32-bit integer quantity
+dnl
+AC_DEFUN(BASH_TYPE_U_BITS32_T,
+[
+if test "$ac_cv_sizeof_int" = 4; then
+ AC_CHECK_TYPE(u_bits32_t, unsigned int)
+elif test "$ac_cv_sizeof_long" = 4; then
+ AC_CHECK_TYPE(u_bits32_t, unsigned long)
+else
+ AC_CHECK_TYPE(u_bits32_t, unsigned int)
+fi
+])
+
+AC_DEFUN(BASH_TYPE_PTRDIFF_T,
+[
+if test "$ac_cv_sizeof_int" = "$ac_cv_sizeof_char_p"; then
+ AC_CHECK_TYPE(ptrdiff_t, int)
+elif test "$ac_cv_sizeof_long" = "$ac_cv_sizeof_char_p"; then
+ AC_CHECK_TYPE(ptrdiff_t, long)
+elif test "$ac_cv_type_long_long" = yes && test "$ac_cv_sizeof_long_long" = "$ac_cv_sizeof_char_p"; then
+ AC_CHECK_TYPE(ptrdiff_t, [long long])
+else
+ AC_CHECK_TYPE(ptrdiff_t, int)
+fi
+])
+
+dnl
+dnl A signed 64-bit quantity
+dnl
+AC_DEFUN(BASH_TYPE_BITS64_T,
+[
+if test "$ac_cv_sizeof_char_p" = 8; then
+ AC_CHECK_TYPE(bits64_t, char *)
+elif test "$ac_cv_sizeof_double" = 8; then
+ AC_CHECK_TYPE(bits64_t, double)
+elif test -n "$ac_cv_type_long_long" && test "$ac_cv_sizeof_long_long" = 8; then
+ AC_CHECK_TYPE(bits64_t, [long long])
+elif test "$ac_cv_sizeof_long" = 8; then
+ AC_CHECK_TYPE(bits64_t, long)
+else
+ AC_CHECK_TYPE(bits64_t, double)
+fi
+])
+
+AC_DEFUN(BASH_TYPE_LONG_LONG,
+[
+AC_CACHE_CHECK([for long long], bash_cv_type_long_long,
+[AC_TRY_LINK([
+long long ll = 1; int i = 63;],
+[
+long long llm = (long long) -1;
+return ll << i | ll >> i | llm / ll | llm % ll;
+], bash_cv_type_long_long='long long', bash_cv_type_long_long='long')])
+if test "$bash_cv_type_long_long" = 'long long'; then
+ AC_DEFINE(HAVE_LONG_LONG, 1)
+fi
+])
+
+AC_DEFUN(BASH_TYPE_UNSIGNED_LONG_LONG,
+[
+AC_CACHE_CHECK([for unsigned long long], bash_cv_type_unsigned_long_long,
+[AC_TRY_LINK([
+unsigned long long ull = 1; int i = 63;],
+[
+unsigned long long ullmax = (unsigned long long) -1;
+return ull << i | ull >> i | ullmax / ull | ullmax % ull;
+], bash_cv_type_unsigned_long_long='unsigned long long',
+ bash_cv_type_unsigned_long_long='unsigned long')])
+if test "$bash_cv_type_unsigned_long_long" = 'unsigned long long'; then
+ AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1)
+fi
+])
+
+dnl
+dnl Type of struct rlimit fields: some systems (OSF/1, NetBSD, RISC/os 5.0)
+dnl have a rlim_t, others (4.4BSD based systems) use quad_t, others use
+dnl long and still others use int (HP-UX 9.01, SunOS 4.1.3). To simplify
+dnl matters, this just checks for rlim_t, quad_t, or long.
+dnl
+AC_DEFUN(BASH_TYPE_RLIMIT,
+[AC_MSG_CHECKING(for size and type of struct rlimit fields)
+AC_CACHE_VAL(bash_cv_type_rlimit,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/resource.h>],
+[rlim_t xxx;], bash_cv_type_rlimit=rlim_t,[
+AC_TRY_RUN([
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+main()
+{
+#ifdef HAVE_QUAD_T
+ struct rlimit rl;
+ if (sizeof(rl.rlim_cur) == sizeof(quad_t))
+ exit(0);
+#endif
+ exit(1);
+}], bash_cv_type_rlimit=quad_t, bash_cv_type_rlimit=long,
+ [AC_MSG_WARN(cannot check quad_t if cross compiling -- defaulting to long)
+ bash_cv_type_rlimit=long])])
+])
+AC_MSG_RESULT($bash_cv_type_rlimit)
+if test $bash_cv_type_rlimit = quad_t; then
+AC_DEFINE(RLIMTYPE, quad_t)
+elif test $bash_cv_type_rlimit = rlim_t; then
+AC_DEFINE(RLIMTYPE, rlim_t)
+fi
+])
+
+AC_DEFUN(BASH_TYPE_SIG_ATOMIC_T,
+[AC_CACHE_CHECK([for sig_atomic_t in signal.h], ac_cv_have_sig_atomic_t,
+[AC_TRY_LINK([
+#include <signal.h>
+],[ sig_atomic_t x; ],
+ac_cv_have_sig_atomic_t=yes, ac_cv_have_sig_atomic_t=no)])
+if test "$ac_cv_have_sig_atomic_t" = "no"
+then
+ AC_CHECK_TYPE(sig_atomic_t,int)
+fi
+])
+
+AC_DEFUN(BASH_FUNC_LSTAT,
+[dnl Cannot use AC_CHECK_FUNCS(lstat) because Linux defines lstat() as an
+dnl inline function in <sys/stat.h>.
+AC_CACHE_CHECK([for lstat], bash_cv_func_lstat,
+[AC_TRY_LINK([
+#include <sys/types.h>
+#include <sys/stat.h>
+],[ lstat(".",(struct stat *)0); ],
+bash_cv_func_lstat=yes, bash_cv_func_lstat=no)])
+if test $bash_cv_func_lstat = yes; then
+ AC_DEFINE(HAVE_LSTAT)
+fi
+])
+
+AC_DEFUN(BASH_FUNC_INET_ATON,
+[
+AC_CACHE_CHECK([for inet_aton], bash_cv_func_inet_aton,
+[AC_TRY_LINK([
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+struct in_addr ap;], [ inet_aton("127.0.0.1", &ap); ],
+bash_cv_func_inet_aton=yes, bash_cv_func_inet_aton=no)])
+if test $bash_cv_func_inet_aton = yes; then
+ AC_DEFINE(HAVE_INET_ATON)
+else
+ AC_LIBOBJ(inet_aton)
+fi
+])
+
+AC_DEFUN(BASH_FUNC_GETENV,
+[AC_MSG_CHECKING(to see if getenv can be redefined)
+AC_CACHE_VAL(bash_cv_getenv_redef,
+[AC_TRY_RUN([
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#ifndef __STDC__
+# ifndef const
+# define const
+# endif
+#endif
+char *
+getenv (name)
+#if defined (__linux__) || defined (__bsdi__) || defined (convex)
+ const char *name;
+#else
+ char const *name;
+#endif /* !__linux__ && !__bsdi__ && !convex */
+{
+return "42";
+}
+main()
+{
+char *s;
+/* The next allows this program to run, but does not allow bash to link
+ when it redefines getenv. I'm not really interested in figuring out
+ why not. */
+#if defined (NeXT)
+exit(1);
+#endif
+s = getenv("ABCDE");
+exit(s == 0); /* force optimizer to leave getenv in */
+}
+], bash_cv_getenv_redef=yes, bash_cv_getenv_redef=no,
+ [AC_MSG_WARN(cannot check getenv redefinition if cross compiling -- defaulting to yes)
+ bash_cv_getenv_redef=yes]
+)])
+AC_MSG_RESULT($bash_cv_getenv_redef)
+if test $bash_cv_getenv_redef = yes; then
+AC_DEFINE(CAN_REDEFINE_GETENV)
+fi
+])
+
+# We should check for putenv before calling this
+AC_DEFUN(BASH_FUNC_STD_PUTENV,
+[
+AC_REQUIRE([AC_HEADER_STDC])
+AC_REQUIRE([AC_C_PROTOTYPES])
+AC_CACHE_CHECK([for standard-conformant putenv declaration], bash_cv_std_putenv,
+[AC_TRY_LINK([
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <stddef.h>
+#endif
+#ifndef __STDC__
+# ifndef const
+# define const
+# endif
+#endif
+#ifdef PROTOTYPES
+extern int putenv (char *);
+#else
+extern int putenv ();
+#endif
+],
+[return (putenv == 0);],
+bash_cv_std_putenv=yes, bash_cv_std_putenv=no
+)])
+if test $bash_cv_std_putenv = yes; then
+AC_DEFINE(HAVE_STD_PUTENV)
+fi
+])
+
+# We should check for unsetenv before calling this
+AC_DEFUN(BASH_FUNC_STD_UNSETENV,
+[
+AC_REQUIRE([AC_HEADER_STDC])
+AC_REQUIRE([AC_C_PROTOTYPES])
+AC_CACHE_CHECK([for standard-conformant unsetenv declaration], bash_cv_std_unsetenv,
+[AC_TRY_LINK([
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <stddef.h>
+#endif
+#ifndef __STDC__
+# ifndef const
+# define const
+# endif
+#endif
+#ifdef PROTOTYPES
+extern int unsetenv (const char *);
+#else
+extern int unsetenv ();
+#endif
+],
+[return (unsetenv == 0);],
+bash_cv_std_unsetenv=yes, bash_cv_std_unsetenv=no
+)])
+if test $bash_cv_std_unsetenv = yes; then
+AC_DEFINE(HAVE_STD_UNSETENV)
+fi
+])
+
+AC_DEFUN(BASH_FUNC_ULIMIT_MAXFDS,
+[AC_MSG_CHECKING(whether ulimit can substitute for getdtablesize)
+AC_CACHE_VAL(bash_cv_ulimit_maxfds,
+[AC_TRY_RUN([
+main()
+{
+long maxfds = ulimit(4, 0L);
+exit (maxfds == -1L);
+}
+], bash_cv_ulimit_maxfds=yes, bash_cv_ulimit_maxfds=no,
+ [AC_MSG_WARN(cannot check ulimit if cross compiling -- defaulting to no)
+ bash_cv_ulimit_maxfds=no]
+)])
+AC_MSG_RESULT($bash_cv_ulimit_maxfds)
+if test $bash_cv_ulimit_maxfds = yes; then
+AC_DEFINE(ULIMIT_MAXFDS)
+fi
+])
+
+AC_DEFUN(BASH_FUNC_GETCWD,
+[AC_MSG_CHECKING([if getcwd() will dynamically allocate memory with 0 size])
+AC_CACHE_VAL(bash_cv_getcwd_malloc,
+[AC_TRY_RUN([
+#include <stdio.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+main()
+{
+ char *xpwd;
+ xpwd = getcwd(0, 0);
+ exit (xpwd == 0);
+}
+], bash_cv_getcwd_malloc=yes, bash_cv_getcwd_malloc=no,
+ [AC_MSG_WARN(cannot check whether getcwd allocates memory when cross-compiling -- defaulting to no)
+ bash_cv_getcwd_malloc=no]
+)])
+AC_MSG_RESULT($bash_cv_getcwd_malloc)
+if test $bash_cv_getcwd_malloc = no; then
+AC_DEFINE(GETCWD_BROKEN)
+AC_LIBOBJ(getcwd)
+fi
+])
+
+dnl
+dnl This needs BASH_CHECK_SOCKLIB, but since that's not called on every
+dnl system, we can't use AC_PREREQ
+dnl
+AC_DEFUN(BASH_FUNC_GETHOSTBYNAME,
+[if test "X$bash_cv_have_gethostbyname" = "X"; then
+_bash_needmsg=yes
+else
+AC_MSG_CHECKING(for gethostbyname in socket library)
+_bash_needmsg=
+fi
+AC_CACHE_VAL(bash_cv_have_gethostbyname,
+[AC_TRY_LINK([#include <netdb.h>],
+[ struct hostent *hp;
+ hp = gethostbyname("localhost");
+], bash_cv_have_gethostbyname=yes, bash_cv_have_gethostbyname=no)]
+)
+if test "X$_bash_needmsg" = Xyes; then
+ AC_MSG_CHECKING(for gethostbyname in socket library)
+fi
+AC_MSG_RESULT($bash_cv_have_gethostbyname)
+if test "$bash_cv_have_gethostbyname" = yes; then
+AC_DEFINE(HAVE_GETHOSTBYNAME)
+fi
+])
+
+AC_DEFUN(BASH_FUNC_FNMATCH_EXTMATCH,
+[AC_MSG_CHECKING(if fnmatch does extended pattern matching with FNM_EXTMATCH)
+AC_CACHE_VAL(bash_cv_fnm_extmatch,
+[AC_TRY_RUN([
+#include <fnmatch.h>
+
+main()
+{
+#ifdef FNM_EXTMATCH
+ exit (0);
+#else
+ exit (1);
+#endif
+}
+], bash_cv_fnm_extmatch=yes, bash_cv_fnm_extmatch=no,
+ [AC_MSG_WARN(cannot check FNM_EXTMATCH if cross compiling -- defaulting to no)
+ bash_cv_fnm_extmatch=no])
+])
+AC_MSG_RESULT($bash_cv_fnm_extmatch)
+if test $bash_cv_fnm_extmatch = yes; then
+AC_DEFINE(HAVE_LIBC_FNM_EXTMATCH)
+fi
+])
+
+AC_DEFUN(BASH_FUNC_POSIX_SETJMP,
+[AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE])
+AC_MSG_CHECKING(for presence of POSIX-style sigsetjmp/siglongjmp)
+AC_CACHE_VAL(bash_cv_func_sigsetjmp,
+[AC_TRY_RUN([
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <sys/types.h>
+#include <signal.h>
+#include <setjmp.h>
+
+main()
+{
+#if !defined (_POSIX_VERSION) || !defined (HAVE_POSIX_SIGNALS)
+exit (1);
+#else
+
+int code;
+sigset_t set, oset;
+sigjmp_buf xx;
+
+/* get the mask */
+sigemptyset(&set);
+sigemptyset(&oset);
+sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &set);
+sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &oset);
+
+/* save it */
+code = sigsetjmp(xx, 1);
+if (code)
+ exit(0); /* could get sigmask and compare to oset here. */
+
+/* change it */
+sigaddset(&set, SIGINT);
+sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);
+
+/* and siglongjmp */
+siglongjmp(xx, 10);
+exit(1);
+#endif
+}], bash_cv_func_sigsetjmp=present, bash_cv_func_sigsetjmp=missing,
+ [AC_MSG_WARN(cannot check for sigsetjmp/siglongjmp if cross-compiling -- defaulting to missing)
+ bash_cv_func_sigsetjmp=missing]
+)])
+AC_MSG_RESULT($bash_cv_func_sigsetjmp)
+if test $bash_cv_func_sigsetjmp = present; then
+AC_DEFINE(HAVE_POSIX_SIGSETJMP)
+fi
+])
+
+AC_DEFUN(BASH_FUNC_STRCOLL,
+[
+AC_MSG_CHECKING(whether or not strcoll and strcmp differ)
+AC_CACHE_VAL(bash_cv_func_strcoll_broken,
+[AC_TRY_RUN([
+#include <stdio.h>
+#if defined (HAVE_LOCALE_H)
+#include <locale.h>
+#endif
+
+main(c, v)
+int c;
+char *v[];
+{
+ int r1, r2;
+ char *deflocale, *defcoll;
+
+#ifdef HAVE_SETLOCALE
+ deflocale = setlocale(LC_ALL, "");
+ defcoll = setlocale(LC_COLLATE, "");
+#endif
+
+#ifdef HAVE_STRCOLL
+ /* These two values are taken from tests/glob-test. */
+ r1 = strcoll("abd", "aXd");
+#else
+ r1 = 0;
+#endif
+ r2 = strcmp("abd", "aXd");
+
+ /* These two should both be greater than 0. It is permissible for
+ a system to return different values, as long as the sign is the
+ same. */
+
+ /* Exit with 1 (failure) if these two values are both > 0, since
+ this tests whether strcoll(3) is broken with respect to strcmp(3)
+ in the default locale. */
+ exit (r1 > 0 && r2 > 0);
+}
+], bash_cv_func_strcoll_broken=yes, bash_cv_func_strcoll_broken=no,
+ [AC_MSG_WARN(cannot check strcoll if cross compiling -- defaulting to no)
+ bash_cv_func_strcoll_broken=no]
+)])
+AC_MSG_RESULT($bash_cv_func_strcoll_broken)
+if test $bash_cv_func_strcoll_broken = yes; then
+AC_DEFINE(STRCOLL_BROKEN)
+fi
+])
+
+AC_DEFUN(BASH_FUNC_PRINTF_A_FORMAT,
+[AC_MSG_CHECKING([for printf floating point output in hex notation])
+AC_CACHE_VAL(bash_cv_printf_a_format,
+[AC_TRY_RUN([
+#include <stdio.h>
+#include <string.h>
+
+int
+main()
+{
+ double y = 0.0;
+ char abuf[1024];
+
+ sprintf(abuf, "%A", y);
+ exit(strchr(abuf, 'P') == (char *)0);
+}
+], bash_cv_printf_a_format=yes, bash_cv_printf_a_format=no,
+ [AC_MSG_WARN(cannot check printf if cross compiling -- defaulting to no)
+ bash_cv_printf_a_format=no]
+)])
+AC_MSG_RESULT($bash_cv_printf_a_format)
+if test $bash_cv_printf_a_format = yes; then
+AC_DEFINE(HAVE_PRINTF_A_FORMAT)
+fi
+])
+
+AC_DEFUN(BASH_STRUCT_TERMIOS_LDISC,
+[
+AC_CHECK_MEMBER(struct termios.c_line, AC_DEFINE(TERMIOS_LDISC), ,[
+#include <sys/types.h>
+#include <termios.h>
+])
+])
+
+AC_DEFUN(BASH_STRUCT_TERMIO_LDISC,
+[
+AC_CHECK_MEMBER(struct termio.c_line, AC_DEFINE(TERMIO_LDISC), ,[
+#include <sys/types.h>
+#include <termio.h>
+])
+])
+
+dnl
+dnl Like AC_STRUCT_ST_BLOCKS, but doesn't muck with LIBOBJS
+dnl
+dnl sets bash_cv_struct_stat_st_blocks
+dnl
+dnl unused for now; we'll see how AC_CHECK_MEMBERS works
+dnl
+AC_DEFUN(BASH_STRUCT_ST_BLOCKS,
+[
+AC_MSG_CHECKING([for struct stat.st_blocks])
+AC_CACHE_VAL(bash_cv_struct_stat_st_blocks,
+[AC_TRY_COMPILE(
+[
+#include <sys/types.h>
+#include <sys/stat.h>
+],
+[
+main()
+{
+static struct stat a;
+if (a.st_blocks) return 0;
+return 0;
+}
+], bash_cv_struct_stat_st_blocks=yes, bash_cv_struct_stat_st_blocks=no)
+])
+AC_MSG_RESULT($bash_cv_struct_stat_st_blocks)
+if test "$bash_cv_struct_stat_st_blocks" = "yes"; then
+AC_DEFINE(HAVE_STRUCT_STAT_ST_BLOCKS)
+fi
+])
+
+AC_DEFUN([BASH_CHECK_LIB_TERMCAP],
+[
+if test "X$bash_cv_termcap_lib" = "X"; then
+_bash_needmsg=yes
+else
+AC_MSG_CHECKING(which library has the termcap functions)
+_bash_needmsg=
+fi
+AC_CACHE_VAL(bash_cv_termcap_lib,
+[AC_CHECK_FUNC(tgetent, bash_cv_termcap_lib=libc,
+ [AC_CHECK_LIB(termcap, tgetent, bash_cv_termcap_lib=libtermcap,
+ [AC_CHECK_LIB(tinfo, tgetent, bash_cv_termcap_lib=libtinfo,
+ [AC_CHECK_LIB(curses, tgetent, bash_cv_termcap_lib=libcurses,
+ [AC_CHECK_LIB(ncurses, tgetent, bash_cv_termcap_lib=libncurses,
+ bash_cv_termcap_lib=gnutermcap)])])])])])
+if test "X$_bash_needmsg" = "Xyes"; then
+AC_MSG_CHECKING(which library has the termcap functions)
+fi
+AC_MSG_RESULT(using $bash_cv_termcap_lib)
+if test $bash_cv_termcap_lib = gnutermcap && test -z "$prefer_curses"; then
+LDFLAGS="$LDFLAGS -L./lib/termcap"
+TERMCAP_LIB="./lib/termcap/libtermcap.a"
+TERMCAP_DEP="./lib/termcap/libtermcap.a"
+elif test $bash_cv_termcap_lib = libtermcap && test -z "$prefer_curses"; then
+TERMCAP_LIB=-ltermcap
+TERMCAP_DEP=
+elif test $bash_cv_termcap_lib = libtinfo; then
+TERMCAP_LIB=-ltinfo
+TERMCAP_DEP=
+elif test $bash_cv_termcap_lib = libncurses; then
+TERMCAP_LIB=-lncurses
+TERMCAP_DEP=
+elif test $bash_cv_termcap_lib = libc; then
+TERMCAP_LIB=
+TERMCAP_DEP=
+else
+TERMCAP_LIB=-lcurses
+TERMCAP_DEP=
+fi
+])
+
+dnl
+dnl Check for the presence of getpeername in libsocket.
+dnl If libsocket is present, check for libnsl and add it to LIBS if
+dnl it's there, since most systems with libsocket require linking
+dnl with libnsl as well. This should only be called if getpeername
+dnl was not found in libc.
+dnl
+dnl NOTE: IF WE FIND GETPEERNAME, WE ASSUME THAT WE HAVE BIND/CONNECT
+dnl AS WELL
+dnl
+AC_DEFUN(BASH_CHECK_LIB_SOCKET,
+[
+if test "X$bash_cv_have_socklib" = "X"; then
+_bash_needmsg=
+else
+AC_MSG_CHECKING(for socket library)
+_bash_needmsg=yes
+fi
+AC_CACHE_VAL(bash_cv_have_socklib,
+[AC_CHECK_LIB(socket, getpeername,
+ bash_cv_have_socklib=yes, bash_cv_have_socklib=no, -lnsl)])
+if test "X$_bash_needmsg" = Xyes; then
+ AC_MSG_RESULT($bash_cv_have_socklib)
+ _bash_needmsg=
+fi
+if test $bash_cv_have_socklib = yes; then
+ # check for libnsl, add it to LIBS if present
+ if test "X$bash_cv_have_libnsl" = "X"; then
+ _bash_needmsg=
+ else
+ AC_MSG_CHECKING(for libnsl)
+ _bash_needmsg=yes
+ fi
+ AC_CACHE_VAL(bash_cv_have_libnsl,
+ [AC_CHECK_LIB(nsl, t_open,
+ bash_cv_have_libnsl=yes, bash_cv_have_libnsl=no)])
+ if test "X$_bash_needmsg" = Xyes; then
+ AC_MSG_RESULT($bash_cv_have_libnsl)
+ _bash_needmsg=
+ fi
+ if test $bash_cv_have_libnsl = yes; then
+ LIBS="-lsocket -lnsl $LIBS"
+ else
+ LIBS="-lsocket $LIBS"
+ fi
+ AC_DEFINE(HAVE_LIBSOCKET)
+ AC_DEFINE(HAVE_GETPEERNAME)
+fi
+])
+
+AC_DEFUN(BASH_STRUCT_DIRENT_D_INO,
+[AC_REQUIRE([AC_HEADER_DIRENT])
+AC_MSG_CHECKING(for struct dirent.d_ino)
+AC_CACHE_VAL(bash_cv_dirent_has_dino,
+[AC_TRY_COMPILE([
+#include <stdio.h>
+#include <sys/types.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+#if defined(HAVE_DIRENT_H)
+# include <dirent.h>
+#else
+# define dirent direct
+# ifdef HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif /* SYSNDIR */
+# ifdef HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif /* SYSDIR */
+# ifdef HAVE_NDIR_H
+# include <ndir.h>
+# endif
+#endif /* HAVE_DIRENT_H */
+],[
+struct dirent d; int z; z = d.d_ino;
+], bash_cv_dirent_has_dino=yes, bash_cv_dirent_has_dino=no)])
+AC_MSG_RESULT($bash_cv_dirent_has_dino)
+if test $bash_cv_dirent_has_dino = yes; then
+AC_DEFINE(HAVE_STRUCT_DIRENT_D_INO)
+fi
+])
+
+AC_DEFUN(BASH_STRUCT_DIRENT_D_FILENO,
+[AC_REQUIRE([AC_HEADER_DIRENT])
+AC_MSG_CHECKING(for struct dirent.d_fileno)
+AC_CACHE_VAL(bash_cv_dirent_has_d_fileno,
+[AC_TRY_COMPILE([
+#include <stdio.h>
+#include <sys/types.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+#if defined(HAVE_DIRENT_H)
+# include <dirent.h>
+#else
+# define dirent direct
+# ifdef HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif /* SYSNDIR */
+# ifdef HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif /* SYSDIR */
+# ifdef HAVE_NDIR_H
+# include <ndir.h>
+# endif
+#endif /* HAVE_DIRENT_H */
+],[
+struct dirent d; int z; z = d.d_fileno;
+], bash_cv_dirent_has_d_fileno=yes, bash_cv_dirent_has_d_fileno=no)])
+AC_MSG_RESULT($bash_cv_dirent_has_d_fileno)
+if test $bash_cv_dirent_has_d_fileno = yes; then
+AC_DEFINE(HAVE_STRUCT_DIRENT_D_FILENO)
+fi
+])
+
+AC_DEFUN(BASH_STRUCT_DIRENT_D_NAMLEN,
+[AC_REQUIRE([AC_HEADER_DIRENT])
+AC_MSG_CHECKING(for struct dirent.d_namlen)
+AC_CACHE_VAL(bash_cv_dirent_has_d_namlen,
+[AC_TRY_COMPILE([
+#include <stdio.h>
+#include <sys/types.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+#if defined(HAVE_DIRENT_H)
+# include <dirent.h>
+#else
+# define dirent direct
+# ifdef HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif /* SYSNDIR */
+# ifdef HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif /* SYSDIR */
+# ifdef HAVE_NDIR_H
+# include <ndir.h>
+# endif
+#endif /* HAVE_DIRENT_H */
+],[
+struct dirent d; int z; z = d.d_namlen;
+], bash_cv_dirent_has_d_namlen=yes, bash_cv_dirent_has_d_namlen=no)])
+AC_MSG_RESULT($bash_cv_dirent_has_d_namlen)
+if test $bash_cv_dirent_has_d_namlen = yes; then
+AC_DEFINE(HAVE_STRUCT_DIRENT_D_NAMLEN)
+fi
+])
+
+AC_DEFUN(BASH_STRUCT_TIMEVAL,
+[AC_MSG_CHECKING(for struct timeval in sys/time.h and time.h)
+AC_CACHE_VAL(bash_cv_struct_timeval,
+[
+AC_EGREP_HEADER(struct timeval, sys/time.h,
+ bash_cv_struct_timeval=yes,
+ AC_EGREP_HEADER(struct timeval, time.h,
+ bash_cv_struct_timeval=yes,
+ bash_cv_struct_timeval=no))
+])
+AC_MSG_RESULT($bash_cv_struct_timeval)
+if test $bash_cv_struct_timeval = yes; then
+ AC_DEFINE(HAVE_TIMEVAL)
+fi
+])
+
+AC_DEFUN(BASH_STRUCT_TIMEZONE,
+[AC_MSG_CHECKING(for struct timezone in sys/time.h and time.h)
+AC_CACHE_VAL(bash_cv_struct_timezone,
+[
+AC_EGREP_HEADER(struct timezone, sys/time.h,
+ bash_cv_struct_timezone=yes,
+ AC_EGREP_HEADER(struct timezone, time.h,
+ bash_cv_struct_timezone=yes,
+ bash_cv_struct_timezone=no))
+])
+AC_MSG_RESULT($bash_cv_struct_timezone)
+if test $bash_cv_struct_timezone = yes; then
+ AC_DEFINE(HAVE_STRUCT_TIMEZONE)
+fi
+])
+
+AC_DEFUN(BASH_STRUCT_WINSIZE,
+[AC_MSG_CHECKING(for struct winsize in sys/ioctl.h and termios.h)
+AC_CACHE_VAL(bash_cv_struct_winsize_header,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/ioctl.h>], [struct winsize x;],
+ bash_cv_struct_winsize_header=ioctl_h,
+ [AC_TRY_COMPILE([#include <sys/types.h>
+#include <termios.h>], [struct winsize x;],
+ bash_cv_struct_winsize_header=termios_h, bash_cv_struct_winsize_header=other)
+])])
+if test $bash_cv_struct_winsize_header = ioctl_h; then
+ AC_MSG_RESULT(sys/ioctl.h)
+ AC_DEFINE(STRUCT_WINSIZE_IN_SYS_IOCTL)
+elif test $bash_cv_struct_winsize_header = termios_h; then
+ AC_MSG_RESULT(termios.h)
+ AC_DEFINE(STRUCT_WINSIZE_IN_TERMIOS)
+else
+ AC_MSG_RESULT(not found)
+fi
+])
+
+dnl Check type of signal routines (posix, 4.2bsd, 4.1bsd or v7)
+AC_DEFUN(BASH_SYS_SIGNAL_VINTAGE,
+[AC_REQUIRE([AC_TYPE_SIGNAL])
+AC_MSG_CHECKING(for type of signal functions)
+AC_CACHE_VAL(bash_cv_signal_vintage,
+[
+ AC_TRY_LINK([#include <signal.h>],[
+ sigset_t ss;
+ struct sigaction sa;
+ sigemptyset(&ss); sigsuspend(&ss);
+ sigaction(SIGINT, &sa, (struct sigaction *) 0);
+ sigprocmask(SIG_BLOCK, &ss, (sigset_t *) 0);
+ ], bash_cv_signal_vintage=posix,
+ [
+ AC_TRY_LINK([#include <signal.h>], [
+ int mask = sigmask(SIGINT);
+ sigsetmask(mask); sigblock(mask); sigpause(mask);
+ ], bash_cv_signal_vintage=4.2bsd,
+ [
+ AC_TRY_LINK([
+ #include <signal.h>
+ RETSIGTYPE foo() { }], [
+ int mask = sigmask(SIGINT);
+ sigset(SIGINT, foo); sigrelse(SIGINT);
+ sighold(SIGINT); sigpause(SIGINT);
+ ], bash_cv_signal_vintage=svr3, bash_cv_signal_vintage=v7
+ )]
+ )]
+)
+])
+AC_MSG_RESULT($bash_cv_signal_vintage)
+if test "$bash_cv_signal_vintage" = posix; then
+AC_DEFINE(HAVE_POSIX_SIGNALS)
+elif test "$bash_cv_signal_vintage" = "4.2bsd"; then
+AC_DEFINE(HAVE_BSD_SIGNALS)
+elif test "$bash_cv_signal_vintage" = svr3; then
+AC_DEFINE(HAVE_USG_SIGHOLD)
+fi
+])
+
+dnl Check if the pgrp of setpgrp() can't be the pid of a zombie process.
+AC_DEFUN(BASH_SYS_PGRP_SYNC,
+[AC_REQUIRE([AC_FUNC_GETPGRP])
+AC_MSG_CHECKING(whether pgrps need synchronization)
+AC_CACHE_VAL(bash_cv_pgrp_pipe,
+[AC_TRY_RUN([
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+main()
+{
+# ifdef GETPGRP_VOID
+# define getpgID() getpgrp()
+# else
+# define getpgID() getpgrp(0)
+# define setpgid(x,y) setpgrp(x,y)
+# endif
+ int pid1, pid2, fds[2];
+ int status;
+ char ok;
+
+ switch (pid1 = fork()) {
+ case -1:
+ exit(1);
+ case 0:
+ setpgid(0, getpid());
+ exit(0);
+ }
+ setpgid(pid1, pid1);
+
+ sleep(2); /* let first child die */
+
+ if (pipe(fds) < 0)
+ exit(2);
+
+ switch (pid2 = fork()) {
+ case -1:
+ exit(3);
+ case 0:
+ setpgid(0, pid1);
+ ok = getpgID() == pid1;
+ write(fds[1], &ok, 1);
+ exit(0);
+ }
+ setpgid(pid2, pid1);
+
+ close(fds[1]);
+ if (read(fds[0], &ok, 1) != 1)
+ exit(4);
+ wait(&status);
+ wait(&status);
+ exit(ok ? 0 : 5);
+}
+], bash_cv_pgrp_pipe=no,bash_cv_pgrp_pipe=yes,
+ [AC_MSG_WARN(cannot check pgrp synchronization if cross compiling -- defaulting to no)
+ bash_cv_pgrp_pipe=no])
+])
+AC_MSG_RESULT($bash_cv_pgrp_pipe)
+if test $bash_cv_pgrp_pipe = yes; then
+AC_DEFINE(PGRP_PIPE)
+fi
+])
+
+AC_DEFUN(BASH_SYS_REINSTALL_SIGHANDLERS,
+[AC_REQUIRE([AC_TYPE_SIGNAL])
+AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE])
+AC_MSG_CHECKING([if signal handlers must be reinstalled when invoked])
+AC_CACHE_VAL(bash_cv_must_reinstall_sighandlers,
+[AC_TRY_RUN([
+#include <signal.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+typedef RETSIGTYPE sigfunc();
+
+int nsigint;
+
+#ifdef HAVE_POSIX_SIGNALS
+sigfunc *
+set_signal_handler(sig, handler)
+ int sig;
+ sigfunc *handler;
+{
+ struct sigaction act, oact;
+ act.sa_handler = handler;
+ act.sa_flags = 0;
+ sigemptyset (&act.sa_mask);
+ sigemptyset (&oact.sa_mask);
+ sigaction (sig, &act, &oact);
+ return (oact.sa_handler);
+}
+#else
+#define set_signal_handler(s, h) signal(s, h)
+#endif
+
+RETSIGTYPE
+sigint(s)
+int s;
+{
+ nsigint++;
+}
+
+main()
+{
+ nsigint = 0;
+ set_signal_handler(SIGINT, sigint);
+ kill((int)getpid(), SIGINT);
+ kill((int)getpid(), SIGINT);
+ exit(nsigint != 2);
+}
+], bash_cv_must_reinstall_sighandlers=no, bash_cv_must_reinstall_sighandlers=yes,
+ [AC_MSG_WARN(cannot check signal handling if cross compiling -- defaulting to no)
+ bash_cv_must_reinstall_sighandlers=no]
+)])
+AC_MSG_RESULT($bash_cv_must_reinstall_sighandlers)
+if test $bash_cv_must_reinstall_sighandlers = yes; then
+AC_DEFINE(MUST_REINSTALL_SIGHANDLERS)
+fi
+])
+
+dnl check that some necessary job control definitions are present
+AC_DEFUN(BASH_SYS_JOB_CONTROL_MISSING,
+[AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE])
+AC_MSG_CHECKING(for presence of necessary job control definitions)
+AC_CACHE_VAL(bash_cv_job_control_missing,
+[AC_TRY_RUN([
+#include <sys/types.h>
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <signal.h>
+
+/* Add more tests in here as appropriate. */
+main()
+{
+/* signal type */
+#if !defined (HAVE_POSIX_SIGNALS) && !defined (HAVE_BSD_SIGNALS)
+exit(1);
+#endif
+
+/* signals and tty control. */
+#if !defined (SIGTSTP) || !defined (SIGSTOP) || !defined (SIGCONT)
+exit (1);
+#endif
+
+/* process control */
+#if !defined (WNOHANG) || !defined (WUNTRACED)
+exit(1);
+#endif
+
+/* Posix systems have tcgetpgrp and waitpid. */
+#if defined (_POSIX_VERSION) && !defined (HAVE_TCGETPGRP)
+exit(1);
+#endif
+
+#if defined (_POSIX_VERSION) && !defined (HAVE_WAITPID)
+exit(1);
+#endif
+
+/* Other systems have TIOCSPGRP/TIOCGPRGP and wait3. */
+#if !defined (_POSIX_VERSION) && !defined (HAVE_WAIT3)
+exit(1);
+#endif
+
+exit(0);
+}], bash_cv_job_control_missing=present, bash_cv_job_control_missing=missing,
+ [AC_MSG_WARN(cannot check job control if cross-compiling -- defaulting to missing)
+ bash_cv_job_control_missing=missing]
+)])
+AC_MSG_RESULT($bash_cv_job_control_missing)
+if test $bash_cv_job_control_missing = missing; then
+AC_DEFINE(JOB_CONTROL_MISSING)
+fi
+])
+
+dnl check whether named pipes are present
+dnl this requires a previous check for mkfifo, but that is awkward to specify
+AC_DEFUN(BASH_SYS_NAMED_PIPES,
+[AC_MSG_CHECKING(for presence of named pipes)
+AC_CACHE_VAL(bash_cv_sys_named_pipes,
+[AC_TRY_RUN([
+#include <sys/types.h>
+#include <sys/stat.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+/* Add more tests in here as appropriate. */
+main()
+{
+int fd, err;
+
+#if defined (HAVE_MKFIFO)
+exit (0);
+#endif
+
+#if !defined (S_IFIFO) && (defined (_POSIX_VERSION) && !defined (S_ISFIFO))
+exit (1);
+#endif
+
+#if defined (NeXT)
+exit (1);
+#endif
+err = mkdir("bash-aclocal", 0700);
+if (err < 0) {
+ perror ("mkdir");
+ exit(1);
+}
+fd = mknod ("bash-aclocal/sh-np-autoconf", 0666 | S_IFIFO, 0);
+if (fd == -1) {
+ rmdir ("bash-aclocal");
+ exit (1);
+}
+close(fd);
+unlink ("bash-aclocal/sh-np-autoconf");
+rmdir ("bash-aclocal");
+exit(0);
+}], bash_cv_sys_named_pipes=present, bash_cv_sys_named_pipes=missing,
+ [AC_MSG_WARN(cannot check for named pipes if cross-compiling -- defaulting to missing)
+ bash_cv_sys_named_pipes=missing]
+)])
+AC_MSG_RESULT($bash_cv_sys_named_pipes)
+if test $bash_cv_sys_named_pipes = missing; then
+AC_DEFINE(NAMED_PIPES_MISSING)
+fi
+])
+
+AC_DEFUN(BASH_SYS_DEFAULT_MAIL_DIR,
+[AC_MSG_CHECKING(for default mail directory)
+AC_CACHE_VAL(bash_cv_mail_dir,
+[if test -d /var/mail; then
+ bash_cv_mail_dir=/var/mail
+ elif test -d /var/spool/mail; then
+ bash_cv_mail_dir=/var/spool/mail
+ elif test -d /usr/mail; then
+ bash_cv_mail_dir=/usr/mail
+ elif test -d /usr/spool/mail; then
+ bash_cv_mail_dir=/usr/spool/mail
+ else
+ bash_cv_mail_dir=unknown
+ fi
+])
+AC_MSG_RESULT($bash_cv_mail_dir)
+AC_DEFINE_UNQUOTED(DEFAULT_MAIL_DIRECTORY, "$bash_cv_mail_dir")
+])
+
+AC_DEFUN(BASH_HAVE_TIOCGWINSZ,
+[AC_MSG_CHECKING(for TIOCGWINSZ in sys/ioctl.h)
+AC_CACHE_VAL(bash_cv_tiocgwinsz_in_ioctl,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/ioctl.h>], [int x = TIOCGWINSZ;],
+ bash_cv_tiocgwinsz_in_ioctl=yes,bash_cv_tiocgwinsz_in_ioctl=no)])
+AC_MSG_RESULT($bash_cv_tiocgwinsz_in_ioctl)
+if test $bash_cv_tiocgwinsz_in_ioctl = yes; then
+AC_DEFINE(GWINSZ_IN_SYS_IOCTL)
+fi
+])
+
+AC_DEFUN(BASH_HAVE_TIOCSTAT,
+[AC_MSG_CHECKING(for TIOCSTAT in sys/ioctl.h)
+AC_CACHE_VAL(bash_cv_tiocstat_in_ioctl,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/ioctl.h>], [int x = TIOCSTAT;],
+ bash_cv_tiocstat_in_ioctl=yes,bash_cv_tiocstat_in_ioctl=no)])
+AC_MSG_RESULT($bash_cv_tiocstat_in_ioctl)
+if test $bash_cv_tiocstat_in_ioctl = yes; then
+AC_DEFINE(TIOCSTAT_IN_SYS_IOCTL)
+fi
+])
+
+AC_DEFUN(BASH_HAVE_FIONREAD,
+[AC_MSG_CHECKING(for FIONREAD in sys/ioctl.h)
+AC_CACHE_VAL(bash_cv_fionread_in_ioctl,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/ioctl.h>], [int x = FIONREAD;],
+ bash_cv_fionread_in_ioctl=yes,bash_cv_fionread_in_ioctl=no)])
+AC_MSG_RESULT($bash_cv_fionread_in_ioctl)
+if test $bash_cv_fionread_in_ioctl = yes; then
+AC_DEFINE(FIONREAD_IN_SYS_IOCTL)
+fi
+])
+
+dnl
+dnl See if speed_t is declared in <sys/types.h>. Some versions of linux
+dnl require a definition of speed_t each time <termcap.h> is included,
+dnl but you can only get speed_t if you include <termios.h> (on some
+dnl versions) or <sys/types.h> (on others).
+dnl
+AC_DEFUN(BASH_CHECK_SPEED_T,
+[AC_MSG_CHECKING(for speed_t in sys/types.h)
+AC_CACHE_VAL(bash_cv_speed_t_in_sys_types,
+[AC_TRY_COMPILE([#include <sys/types.h>], [speed_t x;],
+ bash_cv_speed_t_in_sys_types=yes,bash_cv_speed_t_in_sys_types=no)])
+AC_MSG_RESULT($bash_cv_speed_t_in_sys_types)
+if test $bash_cv_speed_t_in_sys_types = yes; then
+AC_DEFINE(SPEED_T_IN_SYS_TYPES)
+fi
+])
+
+AC_DEFUN(BASH_CHECK_GETPW_FUNCS,
+[AC_MSG_CHECKING(whether getpw functions are declared in pwd.h)
+AC_CACHE_VAL(bash_cv_getpw_declared,
+[AC_EGREP_CPP(getpwuid,
+[
+#include <sys/types.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <pwd.h>
+],
+bash_cv_getpw_declared=yes,bash_cv_getpw_declared=no)])
+AC_MSG_RESULT($bash_cv_getpw_declared)
+if test $bash_cv_getpw_declared = yes; then
+AC_DEFINE(HAVE_GETPW_DECLS)
+fi
+])
+
+AC_DEFUN(BASH_CHECK_DEV_FD,
+[AC_MSG_CHECKING(whether /dev/fd is available)
+AC_CACHE_VAL(bash_cv_dev_fd,
+[bash_cv_dev_fd=""
+if test -d /dev/fd && (exec test -r /dev/fd/0 < /dev/null) ; then
+# check for systems like FreeBSD 5 that only provide /dev/fd/[012]
+ if (exec test -r /dev/fd/3 3</dev/null) ; then
+ bash_cv_dev_fd=standard
+ else
+ bash_cv_dev_fd=absent
+ fi
+fi
+if test -z "$bash_cv_dev_fd" ; then
+ if test -d /proc/self/fd && (exec test -r /proc/self/fd/0 < /dev/null) ; then
+ bash_cv_dev_fd=whacky
+ else
+ bash_cv_dev_fd=absent
+ fi
+fi
+])
+AC_MSG_RESULT($bash_cv_dev_fd)
+if test $bash_cv_dev_fd = "standard"; then
+ AC_DEFINE(HAVE_DEV_FD)
+ AC_DEFINE(DEV_FD_PREFIX, "/dev/fd/")
+elif test $bash_cv_dev_fd = "whacky"; then
+ AC_DEFINE(HAVE_DEV_FD)
+ AC_DEFINE(DEV_FD_PREFIX, "/proc/self/fd/")
+fi
+])
+
+AC_DEFUN(BASH_CHECK_DEV_STDIN,
+[AC_MSG_CHECKING(whether /dev/stdin stdout stderr are available)
+AC_CACHE_VAL(bash_cv_dev_stdin,
+[if test -d /dev/fd && (exec test -r /dev/stdin < /dev/null) ; then
+ bash_cv_dev_stdin=present
+ elif test -d /proc/self/fd && (exec test -r /dev/stdin < /dev/null) ; then
+ bash_cv_dev_stdin=present
+ else
+ bash_cv_dev_stdin=absent
+ fi
+])
+AC_MSG_RESULT($bash_cv_dev_stdin)
+if test $bash_cv_dev_stdin = "present"; then
+ AC_DEFINE(HAVE_DEV_STDIN)
+fi
+])
+
+dnl
+dnl Check if HPUX needs _KERNEL defined for RLIMIT_* definitions
+dnl
+AC_DEFUN(BASH_CHECK_KERNEL_RLIMIT,
+[AC_MSG_CHECKING([whether $host_os needs _KERNEL for RLIMIT defines])
+AC_CACHE_VAL(bash_cv_kernel_rlimit,
+[AC_TRY_COMPILE([
+#include <sys/types.h>
+#include <sys/resource.h>
+],
+[
+ int f;
+ f = RLIMIT_DATA;
+], bash_cv_kernel_rlimit=no,
+[AC_TRY_COMPILE([
+#include <sys/types.h>
+#define _KERNEL
+#include <sys/resource.h>
+#undef _KERNEL
+],
+[
+ int f;
+ f = RLIMIT_DATA;
+], bash_cv_kernel_rlimit=yes, bash_cv_kernel_rlimit=no)]
+)])
+AC_MSG_RESULT($bash_cv_kernel_rlimit)
+if test $bash_cv_kernel_rlimit = yes; then
+AC_DEFINE(RLIMIT_NEEDS_KERNEL)
+fi
+])
+
+dnl
+dnl Check for 64-bit off_t -- used for malloc alignment
+dnl
+dnl C does not allow duplicate case labels, so the compile will fail if
+dnl sizeof(off_t) is > 4.
+dnl
+AC_DEFUN(BASH_CHECK_OFF_T_64,
+[AC_CACHE_CHECK(for 64-bit off_t, bash_cv_off_t_64,
+AC_TRY_COMPILE([
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <sys/types.h>
+],[
+switch (0) case 0: case (sizeof (off_t) <= 4):;
+], bash_cv_off_t_64=no, bash_cv_off_t_64=yes))
+if test $bash_cv_off_t_64 = yes; then
+ AC_DEFINE(HAVE_OFF_T_64)
+fi])
+
+AC_DEFUN(BASH_CHECK_RTSIGS,
+[AC_MSG_CHECKING(for unusable real-time signals due to large values)
+AC_CACHE_VAL(bash_cv_unusable_rtsigs,
+[AC_TRY_RUN([
+#include <sys/types.h>
+#include <signal.h>
+
+#ifndef NSIG
+# define NSIG 64
+#endif
+
+main ()
+{
+ int n_sigs = 2 * NSIG;
+#ifdef SIGRTMIN
+ int rtmin = SIGRTMIN;
+#else
+ int rtmin = 0;
+#endif
+
+ exit(rtmin < n_sigs);
+}], bash_cv_unusable_rtsigs=yes, bash_cv_unusable_rtsigs=no,
+ [AC_MSG_WARN(cannot check real-time signals if cross compiling -- defaulting to yes)
+ bash_cv_unusable_rtsigs=yes]
+)])
+AC_MSG_RESULT($bash_cv_unusable_rtsigs)
+if test $bash_cv_unusable_rtsigs = yes; then
+AC_DEFINE(UNUSABLE_RT_SIGNALS)
+fi
+])
+
+dnl
+dnl check for availability of multibyte characters and functions
+dnl
+dnl geez, I wish I didn't have to check for all of this stuff separately
+dnl
+AC_DEFUN(BASH_CHECK_MULTIBYTE,
+[
+AC_CHECK_HEADERS(wctype.h)
+AC_CHECK_HEADERS(wchar.h)
+AC_CHECK_HEADERS(langinfo.h)
+
+AC_CHECK_FUNC(mbrlen, AC_DEFINE(HAVE_MBRLEN))
+AC_CHECK_FUNC(mbscasecmp, AC_DEFINE(HAVE_MBSCMP))
+AC_CHECK_FUNC(mbscmp, AC_DEFINE(HAVE_MBSCMP))
+AC_CHECK_FUNC(mbsnrtowcs, AC_DEFINE(HAVE_MBSNRTOWCS))
+AC_CHECK_FUNC(mbsrtowcs, AC_DEFINE(HAVE_MBSRTOWCS))
+
+AC_REPLACE_FUNCS(mbschr)
+
+AC_CHECK_FUNC(wcrtomb, AC_DEFINE(HAVE_WCRTOMB))
+AC_CHECK_FUNC(wcscoll, AC_DEFINE(HAVE_WCSCOLL))
+AC_CHECK_FUNC(wcsdup, AC_DEFINE(HAVE_WCSDUP))
+AC_CHECK_FUNC(wcwidth, AC_DEFINE(HAVE_WCWIDTH))
+AC_CHECK_FUNC(wctype, AC_DEFINE(HAVE_WCTYPE))
+
+AC_REPLACE_FUNCS(wcswidth)
+
+dnl checks for both mbrtowc and mbstate_t
+AC_FUNC_MBRTOWC
+if test $ac_cv_func_mbrtowc = yes; then
+ AC_DEFINE(HAVE_MBSTATE_T)
+fi
+
+AC_CHECK_FUNCS(iswlower iswupper towlower towupper iswctype)
+
+AC_CACHE_CHECK([for nl_langinfo and CODESET], bash_cv_langinfo_codeset,
+[AC_TRY_LINK(
+[#include <langinfo.h>],
+[char* cs = nl_langinfo(CODESET);],
+bash_cv_langinfo_codeset=yes, bash_cv_langinfo_codeset=no)])
+if test $bash_cv_langinfo_codeset = yes; then
+ AC_DEFINE(HAVE_LANGINFO_CODESET)
+fi
+
+dnl check for wchar_t in <wchar.h>
+AC_CACHE_CHECK([for wchar_t in wchar.h], bash_cv_type_wchar_t,
+[AC_TRY_COMPILE(
+[#include <wchar.h>
+],
+[
+ wchar_t foo;
+ foo = 0;
+], bash_cv_type_wchar_t=yes, bash_cv_type_wchar_t=no)])
+if test $bash_cv_type_wchar_t = yes; then
+ AC_DEFINE(HAVE_WCHAR_T, 1, [systems should define this type here])
+fi
+
+dnl check for wctype_t in <wctype.h>
+AC_CACHE_CHECK([for wctype_t in wctype.h], bash_cv_type_wctype_t,
+[AC_TRY_COMPILE(
+[#include <wctype.h>],
+[
+ wctype_t foo;
+ foo = 0;
+], bash_cv_type_wctype_t=yes, bash_cv_type_wctype_t=no)])
+if test $bash_cv_type_wctype_t = yes; then
+ AC_DEFINE(HAVE_WCTYPE_T, 1, [systems should define this type here])
+fi
+
+dnl check for wint_t in <wctype.h>
+AC_CACHE_CHECK([for wint_t in wctype.h], bash_cv_type_wint_t,
+[AC_TRY_COMPILE(
+[#include <wctype.h>],
+[
+ wint_t foo;
+ foo = 0;
+], bash_cv_type_wint_t=yes, bash_cv_type_wint_t=no)])
+if test $bash_cv_type_wint_t = yes; then
+ AC_DEFINE(HAVE_WINT_T, 1, [systems should define this type here])
+fi
+
+dnl check for broken wcwidth
+AC_CACHE_CHECK([for wcwidth broken with unicode combining characters],
+bash_cv_wcwidth_broken,
+[AC_TRY_RUN([
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <locale.h>
+#include <wchar.h>
+
+main(c, v)
+int c;
+char **v;
+{
+ int w;
+
+ setlocale(LC_ALL, "en_US.UTF-8");
+ w = wcwidth (0x0301);
+ exit (w == 0); /* exit 0 if wcwidth broken */
+}
+],
+bash_cv_wcwidth_broken=yes, bash_cv_wcwdith_broken=no)])
+if test $bash_cv_wcwidth_broken = yes; then
+ AC_DEFINE(WCWIDTH_BROKEN, 1, [wcwidth is usually not broken])
+fi
+
+if test "$am_cv_func_iconv" = yes; then
+ OLDLIBS="$LIBS"
+ LIBS="$LIBS $LIBICONV"
+ AC_CHECK_FUNCS(locale_charset)
+ LIBS="$OLDLIBS"
+fi
+
+])
+
+dnl need: prefix exec_prefix libdir includedir CC TERMCAP_LIB
+dnl require:
+dnl AC_PROG_CC
+dnl BASH_CHECK_LIB_TERMCAP
+
+AC_DEFUN([RL_LIB_READLINE_VERSION],
+[
+AC_REQUIRE([BASH_CHECK_LIB_TERMCAP])
+
+AC_MSG_CHECKING([version of installed readline library])
+
+# What a pain in the ass this is.
+
+# save cpp and ld options
+_save_CFLAGS="$CFLAGS"
+_save_LDFLAGS="$LDFLAGS"
+_save_LIBS="$LIBS"
+
+# Don't set ac_cv_rl_prefix if the caller has already assigned a value. This
+# allows the caller to do something like $_rl_prefix=$withval if the user
+# specifies --with-installed-readline=PREFIX as an argument to configure
+
+if test -z "$ac_cv_rl_prefix"; then
+test "x$prefix" = xNONE && ac_cv_rl_prefix=$ac_default_prefix || ac_cv_rl_prefix=${prefix}
+fi
+
+eval ac_cv_rl_includedir=${ac_cv_rl_prefix}/include
+eval ac_cv_rl_libdir=${ac_cv_rl_prefix}/lib
+
+LIBS="$LIBS -lreadline ${TERMCAP_LIB}"
+CFLAGS="$CFLAGS -I${ac_cv_rl_includedir}"
+LDFLAGS="$LDFLAGS -L${ac_cv_rl_libdir}"
+
+AC_CACHE_VAL(ac_cv_rl_version,
+[AC_TRY_RUN([
+#include <stdio.h>
+#include <readline/readline.h>
+
+extern int rl_gnu_readline_p;
+
+main()
+{
+ FILE *fp;
+ fp = fopen("conftest.rlv", "w");
+ if (fp == 0)
+ exit(1);
+ if (rl_gnu_readline_p != 1)
+ fprintf(fp, "0.0\n");
+ else
+ fprintf(fp, "%s\n", rl_library_version ? rl_library_version : "0.0");
+ fclose(fp);
+ exit(0);
+}
+],
+ac_cv_rl_version=`cat conftest.rlv`,
+ac_cv_rl_version='0.0',
+ac_cv_rl_version='4.2')])
+
+CFLAGS="$_save_CFLAGS"
+LDFLAGS="$_save_LDFLAGS"
+LIBS="$_save_LIBS"
+
+RL_MAJOR=0
+RL_MINOR=0
+
+# (
+case "$ac_cv_rl_version" in
+2*|3*|4*|5*|6*|7*|8*|9*)
+ RL_MAJOR=`echo $ac_cv_rl_version | sed 's:\..*$::'`
+ RL_MINOR=`echo $ac_cv_rl_version | sed -e 's:^.*\.::' -e 's:[[a-zA-Z]]*$::'`
+ ;;
+esac
+
+# (((
+case $RL_MAJOR in
+[[0-9][0-9]]) _RL_MAJOR=$RL_MAJOR ;;
+[[0-9]]) _RL_MAJOR=0$RL_MAJOR ;;
+*) _RL_MAJOR=00 ;;
+esac
+
+# (((
+case $RL_MINOR in
+[[0-9][0-9]]) _RL_MINOR=$RL_MINOR ;;
+[[0-9]]) _RL_MINOR=0$RL_MINOR ;;
+*) _RL_MINOR=00 ;;
+esac
+
+RL_VERSION="0x${_RL_MAJOR}${_RL_MINOR}"
+
+# Readline versions greater than 4.2 have these defines in readline.h
+
+if test $ac_cv_rl_version = '0.0' ; then
+ AC_MSG_WARN([Could not test version of installed readline library.])
+elif test $RL_MAJOR -gt 4 || { test $RL_MAJOR = 4 && test $RL_MINOR -gt 2 ; } ; then
+ # set these for use by the caller
+ RL_PREFIX=$ac_cv_rl_prefix
+ RL_LIBDIR=$ac_cv_rl_libdir
+ RL_INCLUDEDIR=$ac_cv_rl_includedir
+ AC_MSG_RESULT($ac_cv_rl_version)
+else
+
+AC_DEFINE_UNQUOTED(RL_READLINE_VERSION, $RL_VERSION, [encoded version of the installed readline library])
+AC_DEFINE_UNQUOTED(RL_VERSION_MAJOR, $RL_MAJOR, [major version of installed readline library])
+AC_DEFINE_UNQUOTED(RL_VERSION_MINOR, $RL_MINOR, [minor version of installed readline library])
+
+AC_SUBST(RL_VERSION)
+AC_SUBST(RL_MAJOR)
+AC_SUBST(RL_MINOR)
+
+# set these for use by the caller
+RL_PREFIX=$ac_cv_rl_prefix
+RL_LIBDIR=$ac_cv_rl_libdir
+RL_INCLUDEDIR=$ac_cv_rl_includedir
+
+AC_MSG_RESULT($ac_cv_rl_version)
+
+fi
+])
+
+AC_DEFUN(BASH_FUNC_CTYPE_NONASCII,
+[
+AC_MSG_CHECKING(whether the ctype macros accept non-ascii characters)
+AC_CACHE_VAL(bash_cv_func_ctype_nonascii,
+[AC_TRY_RUN([
+#ifdef HAVE_LOCALE_H
+#include <locale.h>
+#endif
+#include <stdio.h>
+#include <ctype.h>
+
+main(c, v)
+int c;
+char *v[];
+{
+ char *deflocale;
+ unsigned char x;
+ int r1, r2;
+
+#ifdef HAVE_SETLOCALE
+ /* We take a shot here. If that locale is not known, try the
+ system default. We try this one because '\342' (226) is
+ known to be a printable character in that locale. */
+ deflocale = setlocale(LC_ALL, "en_US.ISO8859-1");
+ if (deflocale == 0)
+ deflocale = setlocale(LC_ALL, "");
+#endif
+
+ x = '\342';
+ r1 = isprint(x);
+ x -= 128;
+ r2 = isprint(x);
+ exit (r1 == 0 || r2 == 0);
+}
+], bash_cv_func_ctype_nonascii=yes, bash_cv_func_ctype_nonascii=no,
+ [AC_MSG_WARN(cannot check ctype macros if cross compiling -- defaulting to no)
+ bash_cv_func_ctype_nonascii=no]
+)])
+AC_MSG_RESULT($bash_cv_func_ctype_nonascii)
+if test $bash_cv_func_ctype_nonascii = yes; then
+AC_DEFINE(CTYPE_NON_ASCII)
+fi
+])
+
+AC_DEFUN(BASH_CHECK_WCONTINUED,
+[
+AC_MSG_CHECKING(whether WCONTINUED flag to waitpid is unavailable or available but broken)
+AC_CACHE_VAL(bash_cv_wcontinued_broken,
+[AC_TRY_RUN([
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <errno.h>
+
+#ifndef errno
+extern int errno;
+#endif
+main()
+{
+ int x;
+
+ x = waitpid(-1, (int *)0, WNOHANG|WCONTINUED);
+ if (x == -1 && errno == EINVAL)
+ exit (1);
+ else
+ exit (0);
+}
+], bash_cv_wcontinued_broken=no,bash_cv_wcontinued_broken=yes,
+ [AC_MSG_WARN(cannot check WCONTINUED if cross compiling -- defaulting to no)
+ bash_cv_wcontinued_broken=no]
+)])
+AC_MSG_RESULT($bash_cv_wcontinued_broken)
+if test $bash_cv_wcontinued_broken = yes; then
+AC_DEFINE(WCONTINUED_BROKEN)
+fi
+])
+
+dnl
+dnl tests added for bashdb
+dnl
+
+
+AC_DEFUN([AM_PATH_LISPDIR],
+ [AC_ARG_WITH(lispdir, AC_HELP_STRING([--with-lispdir], [override the default lisp directory]),
+ [ lispdir="$withval"
+ AC_MSG_CHECKING([where .elc files should go])
+ AC_MSG_RESULT([$lispdir])],
+ [
+ # If set to t, that means we are running in a shell under Emacs.
+ # If you have an Emacs named "t", then use the full path.
+ test x"$EMACS" = xt && EMACS=
+ AC_CHECK_PROGS(EMACS, emacs xemacs, no)
+ if test $EMACS != "no"; then
+ if test x${lispdir+set} != xset; then
+ AC_CACHE_CHECK([where .elc files should go], [am_cv_lispdir], [dnl
+ am_cv_lispdir=`$EMACS -batch -q -eval '(while load-path (princ (concat (car load-path) "\n")) (setq load-path (cdr load-path)))' | sed -n -e 's,/$,,' -e '/.*\/lib\/\(x\?emacs\/site-lisp\)$/{s,,${libdir}/\1,;p;q;}' -e '/.*\/share\/\(x\?emacs\/site-lisp\)$/{s,,${datadir}/\1,;p;q;}'`
+ if test -z "$am_cv_lispdir"; then
+ am_cv_lispdir='${datadir}/emacs/site-lisp'
+ fi
+ ])
+ lispdir="$am_cv_lispdir"
+ fi
+ fi
+ ])
+ AC_SUBST(lispdir)
+])
+
+dnl
+dnl tests added for gettext
+dnl
+# codeset.m4 serial AM1 (gettext-0.10.40)
+dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([AM_LANGINFO_CODESET],
+[
+ AC_CACHE_CHECK([for nl_langinfo and CODESET], am_cv_langinfo_codeset,
+ [AC_TRY_LINK([#include <langinfo.h>],
+ [char* cs = nl_langinfo(CODESET);],
+ am_cv_langinfo_codeset=yes,
+ am_cv_langinfo_codeset=no)
+ ])
+ if test $am_cv_langinfo_codeset = yes; then
+ AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
+ [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
+ fi
+])
+# gettext.m4 serial 20 (gettext-0.12)
+dnl Copyright (C) 1995-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl Bruno Haible <haible@clisp.cons.org>, 2000-2003.
+
+dnl Macro to add for using GNU gettext.
+
+dnl Usage: AM_GNU_GETTEXT([INTLSYMBOL], [NEEDSYMBOL], [INTLDIR]).
+dnl INTLSYMBOL can be one of 'external', 'no-libtool', 'use-libtool'. The
+dnl default (if it is not specified or empty) is 'no-libtool'.
+dnl INTLSYMBOL should be 'external' for packages with no intl directory,
+dnl and 'no-libtool' or 'use-libtool' for packages with an intl directory.
+dnl If INTLSYMBOL is 'use-libtool', then a libtool library
+dnl $(top_builddir)/intl/libintl.la will be created (shared and/or static,
+dnl depending on --{enable,disable}-{shared,static} and on the presence of
+dnl AM-DISABLE-SHARED). If INTLSYMBOL is 'no-libtool', a static library
+dnl $(top_builddir)/intl/libintl.a will be created.
+dnl If NEEDSYMBOL is specified and is 'need-ngettext', then GNU gettext
+dnl implementations (in libc or libintl) without the ngettext() function
+dnl will be ignored. If NEEDSYMBOL is specified and is
+dnl 'need-formatstring-macros', then GNU gettext implementations that don't
+dnl support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
+dnl INTLDIR is used to find the intl libraries. If empty,
+dnl the value `$(top_builddir)/intl/' is used.
+dnl
+dnl The result of the configuration is one of three cases:
+dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
+dnl and used.
+dnl Catalog format: GNU --> install in $(datadir)
+dnl Catalog extension: .mo after installation, .gmo in source tree
+dnl 2) GNU gettext has been found in the system's C library.
+dnl Catalog format: GNU --> install in $(datadir)
+dnl Catalog extension: .mo after installation, .gmo in source tree
+dnl 3) No internationalization, always use English msgid.
+dnl Catalog format: none
+dnl Catalog extension: none
+dnl If INTLSYMBOL is 'external', only cases 2 and 3 can occur.
+dnl The use of .gmo is historical (it was needed to avoid overwriting the
+dnl GNU format catalogs when building on a platform with an X/Open gettext),
+dnl but we keep it in order not to force irrelevant filename changes on the
+dnl maintainers.
+dnl
+AC_DEFUN([AM_GNU_GETTEXT],
+[
+ dnl Argument checking.
+ ifelse([$1], [], , [ifelse([$1], [external], , [ifelse([$1], [no-libtool], , [ifelse([$1], [use-libtool], ,
+ [errprint([ERROR: invalid first argument to AM_GNU_GETTEXT
+])])])])])
+ ifelse([$2], [], , [ifelse([$2], [need-ngettext], , [ifelse([$2], [need-formatstring-macros], ,
+ [errprint([ERROR: invalid second argument to AM_GNU_GETTEXT
+])])])])
+ define(gt_included_intl, ifelse([$1], [external], [no], [yes]))
+ define(gt_libtool_suffix_prefix, ifelse([$1], [use-libtool], [l], []))
+
+ AC_REQUIRE([AM_PO_SUBDIRS])dnl
+ ifelse(gt_included_intl, yes, [
+ AC_REQUIRE([AM_INTL_SUBDIR])dnl
+ ])
+
+ dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
+ AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+ AC_REQUIRE([AC_LIB_RPATH])
+
+ dnl Sometimes libintl requires libiconv, so first search for libiconv.
+ dnl Ideally we would do this search only after the
+ dnl if test "$USE_NLS" = "yes"; then
+ dnl if test "$gt_cv_func_gnugettext_libc" != "yes"; then
+ dnl tests. But if configure.in invokes AM_ICONV after AM_GNU_GETTEXT
+ dnl the configure script would need to contain the same shell code
+ dnl again, outside any 'if'. There are two solutions:
+ dnl - Invoke AM_ICONV_LINKFLAGS_BODY here, outside any 'if'.
+ dnl - Control the expansions in more detail using AC_PROVIDE_IFELSE.
+ dnl Since AC_PROVIDE_IFELSE is only in autoconf >= 2.52 and not
+ dnl documented, we avoid it.
+ ifelse(gt_included_intl, yes, , [
+ AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
+ ])
+
+ dnl Set USE_NLS.
+ AM_NLS
+
+ ifelse(gt_included_intl, yes, [
+ BUILD_INCLUDED_LIBINTL=no
+ USE_INCLUDED_LIBINTL=no
+ ])
+ LIBINTL=
+ LTLIBINTL=
+ POSUB=
+
+ dnl If we use NLS figure out what method
+ if test "$USE_NLS" = "yes"; then
+ gt_use_preinstalled_gnugettext=no
+ ifelse(gt_included_intl, yes, [
+ AC_MSG_CHECKING([whether included gettext is requested])
+ AC_ARG_WITH(included-gettext,
+ [ --with-included-gettext use the GNU gettext library included here],
+ nls_cv_force_use_gnu_gettext=$withval,
+ nls_cv_force_use_gnu_gettext=no)
+ AC_MSG_RESULT($nls_cv_force_use_gnu_gettext)
+
+ nls_cv_use_gnu_gettext="$nls_cv_force_use_gnu_gettext"
+ if test "$nls_cv_force_use_gnu_gettext" != "yes"; then
+ ])
+ dnl User does not insist on using GNU NLS library. Figure out what
+ dnl to use. If GNU gettext is available we use this. Else we have
+ dnl to fall back to GNU NLS library.
+
+ dnl Add a version number to the cache macros.
+ define([gt_api_version], ifelse([$2], [need-formatstring-macros], 3, ifelse([$2], [need-ngettext], 2, 1)))
+ define([gt_cv_func_gnugettext_libc], [gt_cv_func_gnugettext]gt_api_version[_libc])
+ define([gt_cv_func_gnugettext_libintl], [gt_cv_func_gnugettext]gt_api_version[_libintl])
+
+ AC_CACHE_CHECK([for GNU gettext in libc], gt_cv_func_gnugettext_libc,
+ [AC_TRY_LINK([#include <libintl.h>
+]ifelse([$2], [need-formatstring-macros],
+[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
+#endif
+changequote(,)dnl
+typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
+changequote([,])dnl
+], [])[extern int _nl_msg_cat_cntr;
+extern int *_nl_domain_bindings;],
+ [bindtextdomain ("", "");
+return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_domain_bindings],
+ gt_cv_func_gnugettext_libc=yes,
+ gt_cv_func_gnugettext_libc=no)])
+
+ if test "$gt_cv_func_gnugettext_libc" != "yes"; then
+ dnl Sometimes libintl requires libiconv, so first search for libiconv.
+ ifelse(gt_included_intl, yes, , [
+ AM_ICONV_LINK
+ ])
+ dnl Search for libintl and define LIBINTL, LTLIBINTL and INCINTL
+ dnl accordingly. Don't use AC_LIB_LINKFLAGS_BODY([intl],[iconv])
+ dnl because that would add "-liconv" to LIBINTL and LTLIBINTL
+ dnl even if libiconv doesn't exist.
+ AC_LIB_LINKFLAGS_BODY([intl])
+ AC_CACHE_CHECK([for GNU gettext in libintl],
+ gt_cv_func_gnugettext_libintl,
+ [gt_save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS $INCINTL"
+ gt_save_LIBS="$LIBS"
+ LIBS="$LIBS $LIBINTL"
+ dnl Now see whether libintl exists and does not depend on libiconv.
+ AC_TRY_LINK([#include <libintl.h>
+]ifelse([$2], [need-formatstring-macros],
+[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
+#endif
+changequote(,)dnl
+typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
+changequote([,])dnl
+], [])[extern int _nl_msg_cat_cntr;
+extern
+#ifdef __cplusplus
+"C"
+#endif
+const char *_nl_expand_alias ();],
+ [bindtextdomain ("", "");
+return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias (0)],
+ gt_cv_func_gnugettext_libintl=yes,
+ gt_cv_func_gnugettext_libintl=no)
+ dnl Now see whether libintl exists and depends on libiconv.
+ if test "$gt_cv_func_gnugettext_libintl" != yes && test -n "$LIBICONV"; then
+ LIBS="$LIBS $LIBICONV"
+ AC_TRY_LINK([#include <libintl.h>
+]ifelse([$2], [need-formatstring-macros],
+[#ifndef __GNU_GETTEXT_SUPPORTED_REVISION
+#define __GNU_GETTEXT_SUPPORTED_REVISION(major) ((major) == 0 ? 0 : -1)
+#endif
+changequote(,)dnl
+typedef int array [2 * (__GNU_GETTEXT_SUPPORTED_REVISION(0) >= 1) - 1];
+changequote([,])dnl
+], [])[extern int _nl_msg_cat_cntr;
+extern
+#ifdef __cplusplus
+"C"
+#endif
+const char *_nl_expand_alias ();],
+ [bindtextdomain ("", "");
+return (int) gettext ("")]ifelse([$2], [need-ngettext], [ + (int) ngettext ("", "", 0)], [])[ + _nl_msg_cat_cntr + *_nl_expand_alias (0)],
+ [LIBINTL="$LIBINTL $LIBICONV"
+ LTLIBINTL="$LTLIBINTL $LTLIBICONV"
+ gt_cv_func_gnugettext_libintl=yes
+ ])
+ fi
+ CPPFLAGS="$gt_save_CPPFLAGS"
+ LIBS="$gt_save_LIBS"])
+ fi
+
+ dnl If an already present or preinstalled GNU gettext() is found,
+ dnl use it. But if this macro is used in GNU gettext, and GNU
+ dnl gettext is already preinstalled in libintl, we update this
+ dnl libintl. (Cf. the install rule in intl/Makefile.in.)
+ if test "$gt_cv_func_gnugettext_libc" = "yes" \
+ || { test "$gt_cv_func_gnugettext_libintl" = "yes" \
+ && test "$PACKAGE" != gettext-runtime \
+ && test "$PACKAGE" != gettext-tools; }; then
+ gt_use_preinstalled_gnugettext=yes
+ else
+ dnl Reset the values set by searching for libintl.
+ LIBINTL=
+ LTLIBINTL=
+ INCINTL=
+ fi
+
+ ifelse(gt_included_intl, yes, [
+ if test "$gt_use_preinstalled_gnugettext" != "yes"; then
+ dnl GNU gettext is not found in the C library.
+ dnl Fall back on included GNU gettext library.
+ nls_cv_use_gnu_gettext=yes
+ fi
+ fi
+
+ if test "$nls_cv_use_gnu_gettext" = "yes"; then
+ dnl Mark actions used to generate GNU NLS library.
+ BUILD_INCLUDED_LIBINTL=yes
+ USE_INCLUDED_LIBINTL=yes
+ LIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LIBICONV"
+ LTLIBINTL="ifelse([$3],[],\${top_builddir}/intl,[$3])/libintl.[]gt_libtool_suffix_prefix[]a $LTLIBICONV"
+ LIBS=`echo " $LIBS " | sed -e 's/ -lintl / /' -e 's/^ //' -e 's/ $//'`
+ fi
+
+ if test "$gt_use_preinstalled_gnugettext" = "yes" \
+ || test "$nls_cv_use_gnu_gettext" = "yes"; then
+ dnl Mark actions to use GNU gettext tools.
+ CATOBJEXT=.gmo
+ fi
+ ])
+
+ if test "$gt_use_preinstalled_gnugettext" = "yes" \
+ || test "$nls_cv_use_gnu_gettext" = "yes"; then
+ AC_DEFINE(ENABLE_NLS, 1,
+ [Define to 1 if translation of program messages to the user's native language
+ is requested.])
+ else
+ USE_NLS=no
+ fi
+ fi
+
+ AC_MSG_CHECKING([whether to use NLS])
+ AC_MSG_RESULT([$USE_NLS])
+ if test "$USE_NLS" = "yes"; then
+ AC_MSG_CHECKING([where the gettext function comes from])
+ if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+ if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
+ gt_source="external libintl"
+ else
+ gt_source="libc"
+ fi
+ else
+ gt_source="included intl directory"
+ fi
+ AC_MSG_RESULT([$gt_source])
+ fi
+
+ if test "$USE_NLS" = "yes"; then
+
+ if test "$gt_use_preinstalled_gnugettext" = "yes"; then
+ if test "$gt_cv_func_gnugettext_libintl" = "yes"; then
+ AC_MSG_CHECKING([how to link with libintl])
+ AC_MSG_RESULT([$LIBINTL])
+ AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCINTL])
+ fi
+
+ dnl For backward compatibility. Some packages may be using this.
+ AC_DEFINE(HAVE_GETTEXT, 1,
+ [Define if the GNU gettext() function is already present or preinstalled.])
+ AC_DEFINE(HAVE_DCGETTEXT, 1,
+ [Define if the GNU dcgettext() function is already present or preinstalled.])
+ fi
+
+ dnl We need to process the po/ directory.
+ POSUB=po
+ fi
+
+ ifelse(gt_included_intl, yes, [
+ dnl If this is used in GNU gettext we have to set BUILD_INCLUDED_LIBINTL
+ dnl to 'yes' because some of the testsuite requires it.
+ if test "$PACKAGE" = gettext-runtime || test "$PACKAGE" = gettext-tools; then
+ BUILD_INCLUDED_LIBINTL=yes
+ fi
+
+ dnl Make all variables we use known to autoconf.
+ AC_SUBST(BUILD_INCLUDED_LIBINTL)
+ AC_SUBST(USE_INCLUDED_LIBINTL)
+ AC_SUBST(CATOBJEXT)
+
+ dnl For backward compatibility. Some configure.ins may be using this.
+ nls_cv_header_intl=
+ nls_cv_header_libgt=
+
+ dnl For backward compatibility. Some Makefiles may be using this.
+ DATADIRNAME=share
+ AC_SUBST(DATADIRNAME)
+
+ dnl For backward compatibility. Some Makefiles may be using this.
+ INSTOBJEXT=.mo
+ AC_SUBST(INSTOBJEXT)
+
+ dnl For backward compatibility. Some Makefiles may be using this.
+ GENCAT=gencat
+ AC_SUBST(GENCAT)
+
+ dnl For backward compatibility. Some Makefiles may be using this.
+ if test "$USE_INCLUDED_LIBINTL" = yes; then
+ INTLOBJS="\$(GETTOBJS)"
+ fi
+ AC_SUBST(INTLOBJS)
+
+ dnl Enable libtool support if the surrounding package wishes it.
+ INTL_LIBTOOL_SUFFIX_PREFIX=gt_libtool_suffix_prefix
+ AC_SUBST(INTL_LIBTOOL_SUFFIX_PREFIX)
+ ])
+
+ dnl For backward compatibility. Some Makefiles may be using this.
+ INTLLIBS="$LIBINTL"
+ AC_SUBST(INTLLIBS)
+
+ dnl Make all documented variables known to autoconf.
+ AC_SUBST(LIBINTL)
+ AC_SUBST(LTLIBINTL)
+ AC_SUBST(POSUB)
+])
+
+
+dnl Checks for all prerequisites of the intl subdirectory,
+dnl except for INTL_LIBTOOL_SUFFIX_PREFIX (and possibly LIBTOOL), INTLOBJS,
+dnl USE_INCLUDED_LIBINTL, BUILD_INCLUDED_LIBINTL.
+AC_DEFUN([AM_INTL_SUBDIR],
+[
+ AC_REQUIRE([AC_PROG_INSTALL])dnl
+ AC_REQUIRE([AM_MKINSTALLDIRS])dnl
+ AC_REQUIRE([AC_PROG_CC])dnl
+ AC_REQUIRE([AC_CANONICAL_HOST])dnl
+ AC_REQUIRE([AC_PROG_RANLIB])dnl
+ AC_REQUIRE([AC_ISC_POSIX])dnl
+ AC_REQUIRE([AC_HEADER_STDC])dnl
+ AC_REQUIRE([AC_C_CONST])dnl
+ AC_REQUIRE([AC_C_INLINE])dnl
+ AC_REQUIRE([AC_TYPE_OFF_T])dnl
+ AC_REQUIRE([AC_TYPE_SIZE_T])dnl
+ AC_REQUIRE([AC_FUNC_ALLOCA])dnl
+ AC_REQUIRE([AC_FUNC_MMAP])dnl
+ AC_REQUIRE([jm_GLIBC21])dnl
+ AC_REQUIRE([gt_INTDIV0])dnl
+ AC_REQUIRE([jm_AC_TYPE_UINTMAX_T])dnl
+ AC_REQUIRE([gt_HEADER_INTTYPES_H])dnl
+ AC_REQUIRE([gt_INTTYPES_PRI])dnl
+
+ AC_CHECK_HEADERS([argz.h limits.h locale.h nl_types.h malloc.h stddef.h \
+stdlib.h string.h unistd.h sys/param.h])
+ AC_CHECK_FUNCS([feof_unlocked fgets_unlocked getc_unlocked getcwd getegid \
+geteuid getgid getuid mempcpy munmap putenv setenv setlocale localeconv stpcpy \
+strcasecmp strdup strtoul tsearch __argz_count __argz_stringify __argz_next \
+__fsetlocking])
+
+ AM_ICONV
+ AM_LANGINFO_CODESET
+ if test $ac_cv_header_locale_h = yes; then
+ AM_LC_MESSAGES
+ fi
+
+ dnl intl/plural.c is generated from intl/plural.y. It requires bison,
+ dnl because plural.y uses bison specific features. It requires at least
+ dnl bison-1.26 because earlier versions generate a plural.c that doesn't
+ dnl compile.
+ dnl bison is only needed for the maintainer (who touches plural.y). But in
+ dnl order to avoid separate Makefiles or --enable-maintainer-mode, we put
+ dnl the rule in general Makefile. Now, some people carelessly touch the
+ dnl files or have a broken "make" program, hence the plural.c rule will
+ dnl sometimes fire. To avoid an error, defines BISON to ":" if it is not
+ dnl present or too old.
+ AC_CHECK_PROGS([INTLBISON], [bison])
+ if test -z "$INTLBISON"; then
+ ac_verc_fail=yes
+ else
+ dnl Found it, now check the version.
+ AC_MSG_CHECKING([version of bison])
+changequote(<<,>>)dnl
+ ac_prog_version=`$INTLBISON --version 2>&1 | sed -n 's/^.*GNU Bison.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
+ case $ac_prog_version in
+ '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+ 1.2[6-9]* | 1.[3-9][0-9]* | [2-9].*)
+changequote([,])dnl
+ ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+ *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+ esac
+ AC_MSG_RESULT([$ac_prog_version])
+ fi
+ if test $ac_verc_fail = yes; then
+ INTLBISON=:
+ fi
+])
+
+
+dnl Usage: AM_GNU_GETTEXT_VERSION([gettext-version])
+AC_DEFUN([AM_GNU_GETTEXT_VERSION], [])
+# glibc21.m4 serial 2 (fileutils-4.1.3, gettext-0.10.40)
+dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+# Test for the GNU C Library, version 2.1 or newer.
+# From Bruno Haible.
+
+AC_DEFUN([jm_GLIBC21],
+ [
+ AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
+ ac_cv_gnu_library_2_1,
+ [AC_EGREP_CPP([Lucky GNU user],
+ [
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
+ Lucky GNU user
+ #endif
+#endif
+ ],
+ ac_cv_gnu_library_2_1=yes,
+ ac_cv_gnu_library_2_1=no)
+ ]
+ )
+ AC_SUBST(GLIBC21)
+ GLIBC21="$ac_cv_gnu_library_2_1"
+ ]
+)
+# iconv.m4 serial AM4 (gettext-0.11.3)
+dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([AM_ICONV_LINKFLAGS_BODY],
+[
+ dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
+ AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+ AC_REQUIRE([AC_LIB_RPATH])
+
+ dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
+ dnl accordingly.
+ AC_LIB_LINKFLAGS_BODY([iconv])
+])
+
+AC_DEFUN([AM_ICONV_LINK],
+[
+ dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
+ dnl those with the standalone portable GNU libiconv installed).
+
+ dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
+ dnl accordingly.
+ AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
+
+ dnl Add $INCICONV to CPPFLAGS before performing the following checks,
+ dnl because if the user has installed libiconv and not disabled its use
+ dnl via --without-libiconv-prefix, he wants to use it. The first
+ dnl AC_TRY_LINK will then fail, the second AC_TRY_LINK will succeed.
+ am_save_CPPFLAGS="$CPPFLAGS"
+ AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
+
+ AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
+ am_cv_func_iconv="no, consider installing GNU libiconv"
+ am_cv_lib_iconv=no
+ AC_TRY_LINK([#include <stdlib.h>
+#include <iconv.h>],
+ [iconv_t cd = iconv_open("","");
+ iconv(cd,NULL,NULL,NULL,NULL);
+ iconv_close(cd);],
+ am_cv_func_iconv=yes)
+ if test "$am_cv_func_iconv" != yes; then
+ am_save_LIBS="$LIBS"
+ LIBS="$LIBS $LIBICONV"
+ AC_TRY_LINK([#include <stdlib.h>
+#include <iconv.h>],
+ [iconv_t cd = iconv_open("","");
+ iconv(cd,NULL,NULL,NULL,NULL);
+ iconv_close(cd);],
+ am_cv_lib_iconv=yes
+ am_cv_func_iconv=yes)
+ LIBS="$am_save_LIBS"
+ fi
+ ])
+ if test "$am_cv_func_iconv" = yes; then
+ AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
+ fi
+ if test "$am_cv_lib_iconv" = yes; then
+ AC_MSG_CHECKING([how to link with libiconv])
+ AC_MSG_RESULT([$LIBICONV])
+ else
+ dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
+ dnl either.
+ CPPFLAGS="$am_save_CPPFLAGS"
+ LIBICONV=
+ LTLIBICONV=
+ fi
+ AC_SUBST(LIBICONV)
+ AC_SUBST(LTLIBICONV)
+])
+
+AC_DEFUN([AM_ICONV],
+[
+ AM_ICONV_LINK
+ if test "$am_cv_func_iconv" = yes; then
+ AC_MSG_CHECKING([for iconv declaration])
+ AC_CACHE_VAL(am_cv_proto_iconv, [
+ AC_TRY_COMPILE([
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(__cplusplus)
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+#else
+size_t iconv();
+#endif
+], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const")
+ am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
+ am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
+ AC_MSG_RESULT([$]{ac_t:-
+ }[$]am_cv_proto_iconv)
+ AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1,
+ [Define as const if the declaration of iconv() needs const.])
+ fi
+])
+# intdiv0.m4 serial 1 (gettext-0.11.3)
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([gt_INTDIV0],
+[
+ AC_REQUIRE([AC_PROG_CC])dnl
+ AC_REQUIRE([AC_CANONICAL_HOST])dnl
+
+ AC_CACHE_CHECK([whether integer division by zero raises SIGFPE],
+ gt_cv_int_divbyzero_sigfpe,
+ [
+ AC_TRY_RUN([
+#include <stdlib.h>
+#include <signal.h>
+
+static void
+#ifdef __cplusplus
+sigfpe_handler (int sig)
+#else
+sigfpe_handler (sig) int sig;
+#endif
+{
+ /* Exit with code 0 if SIGFPE, with code 1 if any other signal. */
+ exit (sig != SIGFPE);
+}
+
+int x = 1;
+int y = 0;
+int z;
+int nan;
+
+int main ()
+{
+ signal (SIGFPE, sigfpe_handler);
+/* IRIX and AIX (when "xlc -qcheck" is used) yield signal SIGTRAP. */
+#if (defined (__sgi) || defined (_AIX)) && defined (SIGTRAP)
+ signal (SIGTRAP, sigfpe_handler);
+#endif
+/* Linux/SPARC yields signal SIGILL. */
+#if defined (__sparc__) && defined (__linux__)
+ signal (SIGILL, sigfpe_handler);
+#endif
+
+ z = x / y;
+ nan = y / y;
+ exit (1);
+}
+], gt_cv_int_divbyzero_sigfpe=yes, gt_cv_int_divbyzero_sigfpe=no,
+ [
+ # Guess based on the CPU.
+ case "$host_cpu" in
+ alpha* | i[34567]86 | m68k | s390*)
+ gt_cv_int_divbyzero_sigfpe="guessing yes";;
+ *)
+ gt_cv_int_divbyzero_sigfpe="guessing no";;
+ esac
+ ])
+ ])
+ case "$gt_cv_int_divbyzero_sigfpe" in
+ *yes) value=1;;
+ *) value=0;;
+ esac
+ AC_DEFINE_UNQUOTED(INTDIV0_RAISES_SIGFPE, $value,
+ [Define if integer division by zero raises signal SIGFPE.])
+])
+# inttypes.m4 serial 1 (gettext-0.11.4)
+dnl Copyright (C) 1997-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Paul Eggert.
+
+# Define HAVE_INTTYPES_H if <inttypes.h> exists and doesn't clash with
+# <sys/types.h>.
+
+AC_DEFUN([gt_HEADER_INTTYPES_H],
+[
+ AC_CACHE_CHECK([for inttypes.h], gt_cv_header_inttypes_h,
+ [
+ AC_TRY_COMPILE(
+ [#include <sys/types.h>
+#include <inttypes.h>],
+ [], gt_cv_header_inttypes_h=yes, gt_cv_header_inttypes_h=no)
+ ])
+ if test $gt_cv_header_inttypes_h = yes; then
+ AC_DEFINE_UNQUOTED(HAVE_INTTYPES_H, 1,
+ [Define if <inttypes.h> exists and doesn't clash with <sys/types.h>.])
+ fi
+])
+# inttypes_h.m4 serial 5 (gettext-0.12)
+dnl Copyright (C) 1997-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Paul Eggert.
+
+# Define HAVE_INTTYPES_H_WITH_UINTMAX if <inttypes.h> exists,
+# doesn't clash with <sys/types.h>, and declares uintmax_t.
+
+AC_DEFUN([jm_AC_HEADER_INTTYPES_H],
+[
+ AC_CACHE_CHECK([for inttypes.h], jm_ac_cv_header_inttypes_h,
+ [AC_TRY_COMPILE(
+ [#include <sys/types.h>
+#include <inttypes.h>],
+ [uintmax_t i = (uintmax_t) -1;],
+ jm_ac_cv_header_inttypes_h=yes,
+ jm_ac_cv_header_inttypes_h=no)])
+ if test $jm_ac_cv_header_inttypes_h = yes; then
+ AC_DEFINE_UNQUOTED(HAVE_INTTYPES_H_WITH_UINTMAX, 1,
+ [Define if <inttypes.h> exists, doesn't clash with <sys/types.h>,
+ and declares uintmax_t. ])
+ fi
+])
+# inttypes-pri.m4 serial 1 (gettext-0.11.4)
+dnl Copyright (C) 1997-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+# Define PRI_MACROS_BROKEN if <inttypes.h> exists and defines the PRI*
+# macros to non-string values. This is the case on AIX 4.3.3.
+
+AC_DEFUN([gt_INTTYPES_PRI],
+[
+ AC_REQUIRE([gt_HEADER_INTTYPES_H])
+ if test $gt_cv_header_inttypes_h = yes; then
+ AC_CACHE_CHECK([whether the inttypes.h PRIxNN macros are broken],
+ gt_cv_inttypes_pri_broken,
+ [
+ AC_TRY_COMPILE([#include <inttypes.h>
+#ifdef PRId32
+char *p = PRId32;
+#endif
+], [], gt_cv_inttypes_pri_broken=no, gt_cv_inttypes_pri_broken=yes)
+ ])
+ fi
+ if test "$gt_cv_inttypes_pri_broken" = yes; then
+ AC_DEFINE_UNQUOTED(PRI_MACROS_BROKEN, 1,
+ [Define if <inttypes.h> exists and defines unusable PRI* macros.])
+ fi
+])
+# isc-posix.m4 serial 2 (gettext-0.11.2)
+dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+# This file is not needed with autoconf-2.53 and newer. Remove it in 2005.
+
+# This test replaces the one in autoconf.
+# Currently this macro should have the same name as the autoconf macro
+# because gettext's gettext.m4 (distributed in the automake package)
+# still uses it. Otherwise, the use in gettext.m4 makes autoheader
+# give these diagnostics:
+# configure.in:556: AC_TRY_COMPILE was called before AC_ISC_POSIX
+# configure.in:556: AC_TRY_RUN was called before AC_ISC_POSIX
+
+undefine([AC_ISC_POSIX])
+
+AC_DEFUN([AC_ISC_POSIX],
+ [
+ dnl This test replaces the obsolescent AC_ISC_POSIX kludge.
+ AC_CHECK_LIB(cposix, strerror, [LIBS="$LIBS -lcposix"])
+ ]
+)
+# lcmessage.m4 serial 3 (gettext-0.11.3)
+dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl Ulrich Drepper <drepper@cygnus.com>, 1995.
+
+# Check whether LC_MESSAGES is available in <locale.h>.
+
+AC_DEFUN([AM_LC_MESSAGES],
+[
+ AC_CACHE_CHECK([for LC_MESSAGES], am_cv_val_LC_MESSAGES,
+ [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
+ am_cv_val_LC_MESSAGES=yes, am_cv_val_LC_MESSAGES=no)])
+ if test $am_cv_val_LC_MESSAGES = yes; then
+ AC_DEFINE(HAVE_LC_MESSAGES, 1,
+ [Define if your <locale.h> file defines LC_MESSAGES.])
+ fi
+])
+# lib-ld.m4 serial 2 (gettext-0.12)
+dnl Copyright (C) 1996-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl Subroutines of libtool.m4,
+dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
+dnl with libtool.m4.
+
+dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.
+AC_DEFUN([AC_LIB_PROG_LD_GNU],
+[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld,
+[# I'd rather use --version here, but apparently some GNU ld's only accept -v.
+if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
+ acl_cv_prog_gnu_ld=yes
+else
+ acl_cv_prog_gnu_ld=no
+fi])
+with_gnu_ld=$acl_cv_prog_gnu_ld
+])
+
+dnl From libtool-1.4. Sets the variable LD.
+AC_DEFUN([AC_LIB_PROG_LD],
+[AC_ARG_WITH(gnu-ld,
+[ --with-gnu-ld assume the C compiler uses GNU ld [default=no]],
+test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+ echo "#! /bin/sh" >conf$$.sh
+ echo "exit 0" >>conf$$.sh
+ chmod +x conf$$.sh
+ if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+ PATH_SEPARATOR=';'
+ else
+ PATH_SEPARATOR=:
+ fi
+ rm -f conf$$.sh
+fi
+ac_prog=ld
+if test "$GCC" = yes; then
+ # Check if gcc -print-prog-name=ld gives a path.
+ AC_MSG_CHECKING([for ld used by GCC])
+ case $host in
+ *-*-mingw*)
+ # gcc leaves a trailing carriage return which upsets mingw
+ ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+ *)
+ ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+ esac
+ case $ac_prog in
+ # Accept absolute paths.
+ [[\\/]* | [A-Za-z]:[\\/]*)]
+ [re_direlt='/[^/][^/]*/\.\./']
+ # Canonicalize the path of ld
+ ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
+ while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
+ ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
+ done
+ test -z "$LD" && LD="$ac_prog"
+ ;;
+ "")
+ # If it fails, then pretend we aren't using GCC.
+ ac_prog=ld
+ ;;
+ *)
+ # If it is relative, then search for the first ld in PATH.
+ with_gnu_ld=unknown
+ ;;
+ esac
+elif test "$with_gnu_ld" = yes; then
+ AC_MSG_CHECKING([for GNU ld])
+else
+ AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL(acl_cv_path_LD,
+[if test -z "$LD"; then
+ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
+ for ac_dir in $PATH; do
+ test -z "$ac_dir" && ac_dir=.
+ if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+ acl_cv_path_LD="$ac_dir/$ac_prog"
+ # Check to see if the program is GNU ld. I'd rather use --version,
+ # but apparently some GNU ld's only accept -v.
+ # Break only if it was the GNU/non-GNU ld that we prefer.
+ if "$acl_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
+ test "$with_gnu_ld" != no && break
+ else
+ test "$with_gnu_ld" != yes && break
+ fi
+ fi
+ done
+ IFS="$ac_save_ifs"
+else
+ acl_cv_path_LD="$LD" # Let the user override the test with a path.
+fi])
+LD="$acl_cv_path_LD"
+if test -n "$LD"; then
+ AC_MSG_RESULT($LD)
+else
+ AC_MSG_RESULT(no)
+fi
+test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
+AC_LIB_PROG_LD_GNU
+])
+# lib-link.m4 serial 4 (gettext-0.12)
+dnl Copyright (C) 2001-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
+dnl augments the CPPFLAGS variable.
+AC_DEFUN([AC_LIB_LINKFLAGS],
+[
+ AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+ AC_REQUIRE([AC_LIB_RPATH])
+ define([Name],[translit([$1],[./-], [___])])
+ define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
+ AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [
+ AC_LIB_LINKFLAGS_BODY([$1], [$2])
+ ac_cv_lib[]Name[]_libs="$LIB[]NAME"
+ ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME"
+ ac_cv_lib[]Name[]_cppflags="$INC[]NAME"
+ ])
+ LIB[]NAME="$ac_cv_lib[]Name[]_libs"
+ LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs"
+ INC[]NAME="$ac_cv_lib[]Name[]_cppflags"
+ AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+ AC_SUBST([LIB]NAME)
+ AC_SUBST([LTLIB]NAME)
+ dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the
+ dnl results of this search when this library appears as a dependency.
+ HAVE_LIB[]NAME=yes
+ undefine([Name])
+ undefine([NAME])
+])
+
+dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode)
+dnl searches for libname and the libraries corresponding to explicit and
+dnl implicit dependencies, together with the specified include files and
+dnl the ability to compile and link the specified testcode. If found, it
+dnl sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME} and
+dnl LTLIB${NAME} variables and augments the CPPFLAGS variable, and
+dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
+dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
+AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
+[
+ AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+ AC_REQUIRE([AC_LIB_RPATH])
+ define([Name],[translit([$1],[./-], [___])])
+ define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
+
+ dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME
+ dnl accordingly.
+ AC_LIB_LINKFLAGS_BODY([$1], [$2])
+
+ dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
+ dnl because if the user has installed lib[]Name and not disabled its use
+ dnl via --without-lib[]Name-prefix, he wants to use it.
+ ac_save_CPPFLAGS="$CPPFLAGS"
+ AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
+
+ AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
+ ac_save_LIBS="$LIBS"
+ LIBS="$LIBS $LIB[]NAME"
+ AC_TRY_LINK([$3], [$4], [ac_cv_lib[]Name=yes], [ac_cv_lib[]Name=no])
+ LIBS="$ac_save_LIBS"
+ ])
+ if test "$ac_cv_lib[]Name" = yes; then
+ HAVE_LIB[]NAME=yes
+ AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the $1 library.])
+ AC_MSG_CHECKING([how to link with lib[]$1])
+ AC_MSG_RESULT([$LIB[]NAME])
+ else
+ HAVE_LIB[]NAME=no
+ dnl If $LIB[]NAME didn't lead to a usable library, we don't need
+ dnl $INC[]NAME either.
+ CPPFLAGS="$ac_save_CPPFLAGS"
+ LIB[]NAME=
+ LTLIB[]NAME=
+ fi
+ AC_SUBST([HAVE_LIB]NAME)
+ AC_SUBST([LIB]NAME)
+ AC_SUBST([LTLIB]NAME)
+ undefine([Name])
+ undefine([NAME])
+])
+
+dnl Determine the platform dependent parameters needed to use rpath:
+dnl libext, shlibext, hardcode_libdir_flag_spec, hardcode_libdir_separator,
+dnl hardcode_direct, hardcode_minus_L.
+AC_DEFUN([AC_LIB_RPATH],
+[
+ AC_REQUIRE([AC_PROG_CC]) dnl we use $CC, $GCC, $LDFLAGS
+ AC_REQUIRE([AC_LIB_PROG_LD]) dnl we use $LD, $with_gnu_ld
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl we use $host
+ AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
+ AC_CACHE_CHECK([for shared library run path origin], acl_cv_rpath, [
+ CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
+ ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
+ . ./conftest.sh
+ rm -f ./conftest.sh
+ acl_cv_rpath=done
+ ])
+ wl="$acl_cv_wl"
+ libext="$acl_cv_libext"
+ shlibext="$acl_cv_shlibext"
+ hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
+ hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
+ hardcode_direct="$acl_cv_hardcode_direct"
+ hardcode_minus_L="$acl_cv_hardcode_minus_L"
+ dnl Determine whether the user wants rpath handling at all.
+ AC_ARG_ENABLE(rpath,
+ [ --disable-rpath do not hardcode runtime library paths],
+ :, enable_rpath=yes)
+])
+
+dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
+dnl the libraries corresponding to explicit and implicit dependencies.
+dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
+AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
+[
+ define([NAME],[translit([$1],[abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])])
+ dnl By default, look in $includedir and $libdir.
+ use_additional=yes
+ AC_LIB_WITH_FINAL_PREFIX([
+ eval additional_includedir=\"$includedir\"
+ eval additional_libdir=\"$libdir\"
+ ])
+ AC_LIB_ARG_WITH([lib$1-prefix],
+[ --with-lib$1-prefix[=DIR] search for lib$1 in DIR/include and DIR/lib
+ --without-lib$1-prefix don't search for lib$1 in includedir and libdir],
+[
+ if test "X$withval" = "Xno"; then
+ use_additional=no
+ else
+ if test "X$withval" = "X"; then
+ AC_LIB_WITH_FINAL_PREFIX([
+ eval additional_includedir=\"$includedir\"
+ eval additional_libdir=\"$libdir\"
+ ])
+ else
+ additional_includedir="$withval/include"
+ additional_libdir="$withval/lib"
+ fi
+ fi
+])
+ dnl Search the library and its dependencies in $additional_libdir and
+ dnl $LDFLAGS. Using breadth-first-seach.
+ LIB[]NAME=
+ LTLIB[]NAME=
+ INC[]NAME=
+ rpathdirs=
+ ltrpathdirs=
+ names_already_handled=
+ names_next_round='$1 $2'
+ while test -n "$names_next_round"; do
+ names_this_round="$names_next_round"
+ names_next_round=
+ for name in $names_this_round; do
+ already_handled=
+ for n in $names_already_handled; do
+ if test "$n" = "$name"; then
+ already_handled=yes
+ break
+ fi
+ done
+ if test -z "$already_handled"; then
+ names_already_handled="$names_already_handled $name"
+ dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
+ dnl or AC_LIB_HAVE_LINKFLAGS call.
+ uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
+ eval value=\"\$HAVE_LIB$uppername\"
+ if test -n "$value"; then
+ if test "$value" = yes; then
+ eval value=\"\$LIB$uppername\"
+ test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
+ eval value=\"\$LTLIB$uppername\"
+ test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
+ else
+ dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
+ dnl that this library doesn't exist. So just drop it.
+ :
+ fi
+ else
+ dnl Search the library lib$name in $additional_libdir and $LDFLAGS
+ dnl and the already constructed $LIBNAME/$LTLIBNAME.
+ found_dir=
+ found_la=
+ found_so=
+ found_a=
+ if test $use_additional = yes; then
+ if test "X$prefer_shared" = "Xyes" && test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext"; then
+ found_dir="$additional_libdir"
+ found_so="$additional_libdir/lib$name.$shlibext"
+ if test -f "$additional_libdir/lib$name.la"; then
+ found_la="$additional_libdir/lib$name.la"
+ fi
+ else
+ if test -f "$additional_libdir/lib$name.$libext"; then
+ found_dir="$additional_libdir"
+ found_a="$additional_libdir/lib$name.$libext"
+ if test -f "$additional_libdir/lib$name.la"; then
+ found_la="$additional_libdir/lib$name.la"
+ fi
+ fi
+ fi
+ fi
+ if test "X$found_dir" = "X"; then
+ for x in $LDFLAGS $LTLIB[]NAME; do
+ AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+ case "$x" in
+ -L*)
+ dir=`echo "X$x" | sed -e 's/^X-L//'`
+ if test "X$prefer_shared" = "Xyes" && test -n "$shlibext" && test -f "$dir/lib$name.$shlibext"; then
+ found_dir="$dir"
+ found_so="$dir/lib$name.$shlibext"
+ if test -f "$dir/lib$name.la"; then
+ found_la="$dir/lib$name.la"
+ fi
+ else
+ if test -f "$dir/lib$name.$libext"; then
+ found_dir="$dir"
+ found_a="$dir/lib$name.$libext"
+ if test -f "$dir/lib$name.la"; then
+ found_la="$dir/lib$name.la"
+ fi
+ fi
+ fi
+ ;;
+ esac
+ if test "X$found_dir" != "X"; then
+ break
+ fi
+ done
+ fi
+ if test "X$found_dir" != "X"; then
+ dnl Found the library.
+ LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
+ if test "X$found_so" != "X"; then
+ dnl Linking with a shared library. We attempt to hardcode its
+ dnl directory into the executable's runpath, unless it's the
+ dnl standard /usr/lib.
+ if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then
+ dnl No hardcoding is needed.
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+ else
+ dnl Use an explicit option to hardcode DIR into the resulting
+ dnl binary.
+ dnl Potentially add DIR to ltrpathdirs.
+ dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
+ haveit=
+ for x in $ltrpathdirs; do
+ if test "X$x" = "X$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ ltrpathdirs="$ltrpathdirs $found_dir"
+ fi
+ dnl The hardcoding into $LIBNAME is system dependent.
+ if test "$hardcode_direct" = yes; then
+ dnl Using DIR/libNAME.so during linking hardcodes DIR into the
+ dnl resulting binary.
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+ else
+ if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
+ dnl Use an explicit option to hardcode DIR into the resulting
+ dnl binary.
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+ dnl Potentially add DIR to rpathdirs.
+ dnl The rpathdirs will be appended to $LIBNAME at the end.
+ haveit=
+ for x in $rpathdirs; do
+ if test "X$x" = "X$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ rpathdirs="$rpathdirs $found_dir"
+ fi
+ else
+ dnl Rely on "-L$found_dir".
+ dnl But don't add it if it's already contained in the LDFLAGS
+ dnl or the already constructed $LIBNAME
+ haveit=
+ for x in $LDFLAGS $LIB[]NAME; do
+ AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+ if test "X$x" = "X-L$found_dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
+ fi
+ if test "$hardcode_minus_L" != no; then
+ dnl FIXME: Not sure whether we should use
+ dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+ dnl here.
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
+ else
+ dnl We cannot use $hardcode_runpath_var and LD_RUN_PATH
+ dnl here, because this doesn't fit in flags passed to the
+ dnl compiler. So give up. No hardcoding. This affects only
+ dnl very old systems.
+ dnl FIXME: Not sure whether we should use
+ dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
+ dnl here.
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+ fi
+ fi
+ fi
+ fi
+ else
+ if test "X$found_a" != "X"; then
+ dnl Linking with a static library.
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
+ else
+ dnl We shouldn't come here, but anyway it's good to have a
+ dnl fallback.
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
+ fi
+ fi
+ dnl Assume the include files are nearby.
+ additional_includedir=
+ case "$found_dir" in
+ */lib | */lib/)
+ basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
+ additional_includedir="$basedir/include"
+ ;;
+ esac
+ if test "X$additional_includedir" != "X"; then
+ dnl Potentially add $additional_includedir to $INCNAME.
+ dnl But don't add it
+ dnl 1. if it's the standard /usr/include,
+ dnl 2. if it's /usr/local/include and we are using GCC on Linux,
+ dnl 3. if it's already present in $CPPFLAGS or the already
+ dnl constructed $INCNAME,
+ dnl 4. if it doesn't exist as a directory.
+ if test "X$additional_includedir" != "X/usr/include"; then
+ haveit=
+ if test "X$additional_includedir" = "X/usr/local/include"; then
+ if test -n "$GCC"; then
+ case $host_os in
+ linux*) haveit=yes;;
+ esac
+ fi
+ fi
+ if test -z "$haveit"; then
+ for x in $CPPFLAGS $INC[]NAME; do
+ AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+ if test "X$x" = "X-I$additional_includedir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_includedir"; then
+ dnl Really add $additional_includedir to $INCNAME.
+ INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
+ fi
+ fi
+ fi
+ fi
+ fi
+ dnl Look for dependencies.
+ if test -n "$found_la"; then
+ dnl Read the .la file. It defines the variables
+ dnl dlname, library_names, old_library, dependency_libs, current,
+ dnl age, revision, installed, dlopen, dlpreopen, libdir.
+ save_libdir="$libdir"
+ case "$found_la" in
+ */* | *\\*) . "$found_la" ;;
+ *) . "./$found_la" ;;
+ esac
+ libdir="$save_libdir"
+ dnl We use only dependency_libs.
+ for dep in $dependency_libs; do
+ case "$dep" in
+ -L*)
+ additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+ dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME.
+ dnl But don't add it
+ dnl 1. if it's the standard /usr/lib,
+ dnl 2. if it's /usr/local/lib and we are using GCC on Linux,
+ dnl 3. if it's already present in $LDFLAGS or the already
+ dnl constructed $LIBNAME,
+ dnl 4. if it doesn't exist as a directory.
+ if test "X$additional_libdir" != "X/usr/lib"; then
+ haveit=
+ if test "X$additional_libdir" = "X/usr/local/lib"; then
+ if test -n "$GCC"; then
+ case $host_os in
+ linux*) haveit=yes;;
+ esac
+ fi
+ fi
+ if test -z "$haveit"; then
+ haveit=
+ for x in $LDFLAGS $LIB[]NAME; do
+ AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+ if test "X$x" = "X-L$additional_libdir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_libdir"; then
+ dnl Really add $additional_libdir to $LIBNAME.
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir"
+ fi
+ fi
+ haveit=
+ for x in $LDFLAGS $LTLIB[]NAME; do
+ AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+ if test "X$x" = "X-L$additional_libdir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test -d "$additional_libdir"; then
+ dnl Really add $additional_libdir to $LTLIBNAME.
+ LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir"
+ fi
+ fi
+ fi
+ fi
+ ;;
+ -R*)
+ dir=`echo "X$dep" | sed -e 's/^X-R//'`
+ if test "$enable_rpath" != no; then
+ dnl Potentially add DIR to rpathdirs.
+ dnl The rpathdirs will be appended to $LIBNAME at the end.
+ haveit=
+ for x in $rpathdirs; do
+ if test "X$x" = "X$dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ rpathdirs="$rpathdirs $dir"
+ fi
+ dnl Potentially add DIR to ltrpathdirs.
+ dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
+ haveit=
+ for x in $ltrpathdirs; do
+ if test "X$x" = "X$dir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ ltrpathdirs="$ltrpathdirs $dir"
+ fi
+ fi
+ ;;
+ -l*)
+ dnl Handle this in the next round.
+ names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
+ ;;
+ *.la)
+ dnl Handle this in the next round. Throw away the .la's
+ dnl directory; it is already contained in a preceding -L
+ dnl option.
+ names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+ ;;
+ *)
+ dnl Most likely an immediate library name.
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
+ LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
+ ;;
+ esac
+ done
+ fi
+ else
+ dnl Didn't find the library; assume it is in the system directories
+ dnl known to the linker and runtime loader. (All the system
+ dnl directories known to the linker should also be known to the
+ dnl runtime loader, otherwise the system is severely misconfigured.)
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
+ LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
+ fi
+ fi
+ fi
+ done
+ done
+ if test "X$rpathdirs" != "X"; then
+ if test -n "$hardcode_libdir_separator"; then
+ dnl Weird platform: only the last -rpath option counts, the user must
+ dnl pass all path elements in one option. We can arrange that for a
+ dnl single library, but not when more than one $LIBNAMEs are used.
+ alldirs=
+ for found_dir in $rpathdirs; do
+ alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
+ done
+ dnl Note: hardcode_libdir_flag_spec uses $libdir and $wl.
+ acl_save_libdir="$libdir"
+ libdir="$alldirs"
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ libdir="$acl_save_libdir"
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+ else
+ dnl The -rpath options are cumulative.
+ for found_dir in $rpathdirs; do
+ acl_save_libdir="$libdir"
+ libdir="$found_dir"
+ eval flag=\"$hardcode_libdir_flag_spec\"
+ libdir="$acl_save_libdir"
+ LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
+ done
+ fi
+ fi
+ if test "X$ltrpathdirs" != "X"; then
+ dnl When using libtool, the option that works for both libraries and
+ dnl executables is -R. The -R options are cumulative.
+ for found_dir in $ltrpathdirs; do
+ LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
+ done
+ fi
+])
+
+dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
+dnl unless already present in VAR.
+dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
+dnl contains two or three consecutive elements that belong together.
+AC_DEFUN([AC_LIB_APPENDTOVAR],
+[
+ for element in [$2]; do
+ haveit=
+ for x in $[$1]; do
+ AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+ if test "X$x" = "X$element"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ [$1]="${[$1]}${[$1]:+ }$element"
+ fi
+ done
+])
+# lib-prefix.m4 serial 2 (gettext-0.12)
+dnl Copyright (C) 2001-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Bruno Haible.
+
+dnl AC_LIB_ARG_WITH is synonymous to AC_ARG_WITH in autoconf-2.13, and
+dnl similar to AC_ARG_WITH in autoconf 2.52...2.57 except that is doesn't
+dnl require excessive bracketing.
+ifdef([AC_HELP_STRING],
+[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[[$2]],[$3],[$4])])],
+[AC_DEFUN([AC_LIB_ARG_WITH], [AC_ARG_WITH([$1],[$2],[$3],[$4])])])
+
+dnl AC_LIB_PREFIX adds to the CPPFLAGS and LDFLAGS the flags that are needed
+dnl to access previously installed libraries. The basic assumption is that
+dnl a user will want packages to use other packages he previously installed
+dnl with the same --prefix option.
+dnl This macro is not needed if only AC_LIB_LINKFLAGS is used to locate
+dnl libraries, but is otherwise very convenient.
+AC_DEFUN([AC_LIB_PREFIX],
+[
+ AC_BEFORE([$0], [AC_LIB_LINKFLAGS])
+ AC_REQUIRE([AC_PROG_CC])
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
+ dnl By default, look in $includedir and $libdir.
+ use_additional=yes
+ AC_LIB_WITH_FINAL_PREFIX([
+ eval additional_includedir=\"$includedir\"
+ eval additional_libdir=\"$libdir\"
+ ])
+ AC_LIB_ARG_WITH([lib-prefix],
+[ --with-lib-prefix[=DIR] search for libraries in DIR/include and DIR/lib
+ --without-lib-prefix don't search for libraries in includedir and libdir],
+[
+ if test "X$withval" = "Xno"; then
+ use_additional=no
+ else
+ if test "X$withval" = "X"; then
+ AC_LIB_WITH_FINAL_PREFIX([
+ eval additional_includedir=\"$includedir\"
+ eval additional_libdir=\"$libdir\"
+ ])
+ else
+ additional_includedir="$withval/include"
+ additional_libdir="$withval/lib"
+ fi
+ fi
+])
+ if test $use_additional = yes; then
+ dnl Potentially add $additional_includedir to $CPPFLAGS.
+ dnl But don't add it
+ dnl 1. if it's the standard /usr/include,
+ dnl 2. if it's already present in $CPPFLAGS,
+ dnl 3. if it's /usr/local/include and we are using GCC on Linux,
+ dnl 4. if it doesn't exist as a directory.
+ if test "X$additional_includedir" != "X/usr/include"; then
+ haveit=
+ for x in $CPPFLAGS; do
+ AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+ if test "X$x" = "X-I$additional_includedir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test "X$additional_includedir" = "X/usr/local/include"; then
+ if test -n "$GCC"; then
+ case $host_os in
+ linux*) haveit=yes;;
+ esac
+ fi
+ fi
+ if test -z "$haveit"; then
+ if test -d "$additional_includedir"; then
+ dnl Really add $additional_includedir to $CPPFLAGS.
+ CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
+ fi
+ fi
+ fi
+ fi
+ dnl Potentially add $additional_libdir to $LDFLAGS.
+ dnl But don't add it
+ dnl 1. if it's the standard /usr/lib,
+ dnl 2. if it's already present in $LDFLAGS,
+ dnl 3. if it's /usr/local/lib and we are using GCC on Linux,
+ dnl 4. if it doesn't exist as a directory.
+ if test "X$additional_libdir" != "X/usr/lib"; then
+ haveit=
+ for x in $LDFLAGS; do
+ AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
+ if test "X$x" = "X-L$additional_libdir"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ if test "X$additional_libdir" = "X/usr/local/lib"; then
+ if test -n "$GCC"; then
+ case $host_os in
+ linux*) haveit=yes;;
+ esac
+ fi
+ fi
+ if test -z "$haveit"; then
+ if test -d "$additional_libdir"; then
+ dnl Really add $additional_libdir to $LDFLAGS.
+ LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
+ fi
+ fi
+ fi
+ fi
+ fi
+])
+
+dnl AC_LIB_PREPARE_PREFIX creates variables acl_final_prefix,
+dnl acl_final_exec_prefix, containing the values to which $prefix and
+dnl $exec_prefix will expand at the end of the configure script.
+AC_DEFUN([AC_LIB_PREPARE_PREFIX],
+[
+ dnl Unfortunately, prefix and exec_prefix get only finally determined
+ dnl at the end of configure.
+ if test "X$prefix" = "XNONE"; then
+ acl_final_prefix="$ac_default_prefix"
+ else
+ acl_final_prefix="$prefix"
+ fi
+ if test "X$exec_prefix" = "XNONE"; then
+ acl_final_exec_prefix='${prefix}'
+ else
+ acl_final_exec_prefix="$exec_prefix"
+ fi
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
+ prefix="$acl_save_prefix"
+])
+
+dnl AC_LIB_WITH_FINAL_PREFIX([statement]) evaluates statement, with the
+dnl variables prefix and exec_prefix bound to the values they will have
+dnl at the end of the configure script.
+AC_DEFUN([AC_LIB_WITH_FINAL_PREFIX],
+[
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ $1
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+])
+# nls.m4 serial 1 (gettext-0.12)
+dnl Copyright (C) 1995-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl Bruno Haible <haible@clisp.cons.org>, 2000-2003.
+
+AC_DEFUN([AM_NLS],
+[
+ AC_MSG_CHECKING([whether NLS is requested])
+ dnl Default is enabled NLS
+ AC_ARG_ENABLE(nls,
+ [ --disable-nls do not use Native Language Support],
+ USE_NLS=$enableval, USE_NLS=yes)
+ AC_MSG_RESULT($USE_NLS)
+ AC_SUBST(USE_NLS)
+])
+
+AC_DEFUN([AM_MKINSTALLDIRS],
+[
+ dnl If the AC_CONFIG_AUX_DIR macro for autoconf is used we possibly
+ dnl find the mkinstalldirs script in another subdir but $(top_srcdir).
+ dnl Try to locate it.
+ MKINSTALLDIRS=
+ if test -n "$ac_aux_dir"; then
+ case "$ac_aux_dir" in
+ /*) MKINSTALLDIRS="$ac_aux_dir/mkinstalldirs" ;;
+ *) MKINSTALLDIRS="\$(top_builddir)/$ac_aux_dir/mkinstalldirs" ;;
+ esac
+ fi
+ if test -z "$MKINSTALLDIRS"; then
+ MKINSTALLDIRS="\$(top_srcdir)/mkinstalldirs"
+ fi
+ AC_SUBST(MKINSTALLDIRS)
+])
+# po.m4 serial 1 (gettext-0.12)
+dnl Copyright (C) 1995-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+dnl Bruno Haible <haible@clisp.cons.org>, 2000-2003.
+
+dnl Checks for all prerequisites of the po subdirectory.
+AC_DEFUN([AM_PO_SUBDIRS],
+[
+ AC_REQUIRE([AC_PROG_MAKE_SET])dnl
+ AC_REQUIRE([AC_PROG_INSTALL])dnl
+ AC_REQUIRE([AM_MKINSTALLDIRS])dnl
+ AC_REQUIRE([AM_NLS])dnl
+
+ dnl Perform the following tests also if --disable-nls has been given,
+ dnl because they are needed for "make dist" to work.
+
+ dnl Search for GNU msgfmt in the PATH.
+ dnl The first test excludes Solaris msgfmt and early GNU msgfmt versions.
+ dnl The second test excludes FreeBSD msgfmt.
+ AM_PATH_PROG_WITH_TEST(MSGFMT, msgfmt,
+ [$ac_dir/$ac_word --statistics /dev/null >/dev/null 2>&1 &&
+ (if $ac_dir/$ac_word --statistics /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi)],
+ :)
+ AC_PATH_PROG(GMSGFMT, gmsgfmt, $MSGFMT)
+
+ dnl Search for GNU xgettext 0.12 or newer in the PATH.
+ dnl The first test excludes Solaris xgettext and early GNU xgettext versions.
+ dnl The second test excludes FreeBSD xgettext.
+ AM_PATH_PROG_WITH_TEST(XGETTEXT, xgettext,
+ [$ac_dir/$ac_word --omit-header --copyright-holder= --msgid-bugs-address= /dev/null >/dev/null 2>&1 &&
+ (if $ac_dir/$ac_word --omit-header --copyright-holder= --msgid-bugs-address= /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi)],
+ :)
+ dnl Remove leftover from FreeBSD xgettext call.
+ rm -f messages.po
+
+ dnl Search for GNU msgmerge 0.11 or newer in the PATH.
+ AM_PATH_PROG_WITH_TEST(MSGMERGE, msgmerge,
+ [$ac_dir/$ac_word --update -q /dev/null /dev/null >/dev/null 2>&1], :)
+
+ dnl This could go away some day; the PATH_PROG_WITH_TEST already does it.
+ dnl Test whether we really found GNU msgfmt.
+ if test "$GMSGFMT" != ":"; then
+ dnl If it is no GNU msgfmt we define it as : so that the
+ dnl Makefiles still can work.
+ if $GMSGFMT --statistics /dev/null >/dev/null 2>&1 &&
+ (if $GMSGFMT --statistics /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+ : ;
+ else
+ GMSGFMT=`echo "$GMSGFMT" | sed -e 's,^.*/,,'`
+ AC_MSG_RESULT(
+ [found $GMSGFMT program is not GNU msgfmt; ignore it])
+ GMSGFMT=":"
+ fi
+ fi
+
+ dnl This could go away some day; the PATH_PROG_WITH_TEST already does it.
+ dnl Test whether we really found GNU xgettext.
+ if test "$XGETTEXT" != ":"; then
+ dnl If it is no GNU xgettext we define it as : so that the
+ dnl Makefiles still can work.
+ if $XGETTEXT --omit-header --copyright-holder= --msgid-bugs-address= /dev/null >/dev/null 2>&1 &&
+ (if $XGETTEXT --omit-header --copyright-holder= --msgid-bugs-address= /dev/null 2>&1 >/dev/null | grep usage >/dev/null; then exit 1; else exit 0; fi); then
+ : ;
+ else
+ AC_MSG_RESULT(
+ [found xgettext program is not GNU xgettext; ignore it])
+ XGETTEXT=":"
+ fi
+ dnl Remove leftover from FreeBSD xgettext call.
+ rm -f messages.po
+ fi
+
+ AC_OUTPUT_COMMANDS([
+ for ac_file in $CONFIG_FILES; do
+ # Support "outfile[:infile[:infile...]]"
+ case "$ac_file" in
+ *:*) ac_file=`echo "$ac_file"|sed 's%:.*%%'` ;;
+ esac
+ # PO directories have a Makefile.in generated from Makefile.in.in.
+ case "$ac_file" in */Makefile.in)
+ # Adjust a relative srcdir.
+ ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
+ ac_dir_suffix="/`echo "$ac_dir"|sed 's%^\./%%'`"
+ ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
+ # In autoconf-2.13 it is called $ac_given_srcdir.
+ # In autoconf-2.50 it is called $srcdir.
+ test -n "$ac_given_srcdir" || ac_given_srcdir="$srcdir"
+ case "$ac_given_srcdir" in
+ .) top_srcdir=`echo $ac_dots|sed 's%/$%%'` ;;
+ /*) top_srcdir="$ac_given_srcdir" ;;
+ *) top_srcdir="$ac_dots$ac_given_srcdir" ;;
+ esac
+ if test -f "$ac_given_srcdir/$ac_dir/POTFILES.in"; then
+ rm -f "$ac_dir/POTFILES"
+ test -n "$as_me" && echo "$as_me: creating $ac_dir/POTFILES" || echo "creating $ac_dir/POTFILES"
+ cat "$ac_given_srcdir/$ac_dir/POTFILES.in" | sed -e "/^#/d" -e "/^[ ]*\$/d" -e "s,.*, $top_srcdir/& \\\\," | sed -e "\$s/\(.*\) \\\\/\1/" > "$ac_dir/POTFILES"
+ POMAKEFILEDEPS="POTFILES.in"
+ # ALL_LINGUAS, POFILES, GMOFILES, UPDATEPOFILES, DUMMYPOFILES depend
+ # on $ac_dir but don't depend on user-specified configuration
+ # parameters.
+ if test -f "$ac_given_srcdir/$ac_dir/LINGUAS"; then
+ # The LINGUAS file contains the set of available languages.
+ if test -n "$OBSOLETE_ALL_LINGUAS"; then
+ test -n "$as_me" && echo "$as_me: setting ALL_LINGUAS in configure.in is obsolete" || echo "setting ALL_LINGUAS in configure.in is obsolete"
+ fi
+ ALL_LINGUAS_=`sed -e "/^#/d" "$ac_given_srcdir/$ac_dir/LINGUAS"`
+ # Hide the ALL_LINGUAS assigment from automake.
+ eval 'ALL_LINGUAS''=$ALL_LINGUAS_'
+ POMAKEFILEDEPS="$POMAKEFILEDEPS LINGUAS"
+ else
+ # The set of available languages was given in configure.in.
+ eval 'ALL_LINGUAS''=$OBSOLETE_ALL_LINGUAS'
+ fi
+ case "$ac_given_srcdir" in
+ .) srcdirpre= ;;
+ *) srcdirpre='$(srcdir)/' ;;
+ esac
+ POFILES=
+ GMOFILES=
+ UPDATEPOFILES=
+ DUMMYPOFILES=
+ for lang in $ALL_LINGUAS; do
+ POFILES="$POFILES $srcdirpre$lang.po"
+ GMOFILES="$GMOFILES $srcdirpre$lang.gmo"
+ UPDATEPOFILES="$UPDATEPOFILES $lang.po-update"
+ DUMMYPOFILES="$DUMMYPOFILES $lang.nop"
+ done
+ # CATALOGS depends on both $ac_dir and the user's LINGUAS
+ # environment variable.
+ INST_LINGUAS=
+ if test -n "$ALL_LINGUAS"; then
+ for presentlang in $ALL_LINGUAS; do
+ useit=no
+ if test "%UNSET%" != "$LINGUAS"; then
+ desiredlanguages="$LINGUAS"
+ else
+ desiredlanguages="$ALL_LINGUAS"
+ fi
+ for desiredlang in $desiredlanguages; do
+ # Use the presentlang catalog if desiredlang is
+ # a. equal to presentlang, or
+ # b. a variant of presentlang (because in this case,
+ # presentlang can be used as a fallback for messages
+ # which are not translated in the desiredlang catalog).
+ case "$desiredlang" in
+ "$presentlang"*) useit=yes;;
+ esac
+ done
+ if test $useit = yes; then
+ INST_LINGUAS="$INST_LINGUAS $presentlang"
+ fi
+ done
+ fi
+ CATALOGS=
+ if test -n "$INST_LINGUAS"; then
+ for lang in $INST_LINGUAS; do
+ CATALOGS="$CATALOGS $lang.gmo"
+ done
+ fi
+ test -n "$as_me" && echo "$as_me: creating $ac_dir/Makefile" || echo "creating $ac_dir/Makefile"
+ sed -e "/^POTFILES =/r $ac_dir/POTFILES" -e "/^# Makevars/r $ac_given_srcdir/$ac_dir/Makevars" -e "s|@POFILES@|$POFILES|g" -e "s|@GMOFILES@|$GMOFILES|g" -e "s|@UPDATEPOFILES@|$UPDATEPOFILES|g" -e "s|@DUMMYPOFILES@|$DUMMYPOFILES|g" -e "s|@CATALOGS@|$CATALOGS|g" -e "s|@POMAKEFILEDEPS@|$POMAKEFILEDEPS|g" "$ac_dir/Makefile.in" > "$ac_dir/Makefile"
+ for f in "$ac_given_srcdir/$ac_dir"/Rules-*; do
+ if test -f "$f"; then
+ case "$f" in
+ *.orig | *.bak | *~) ;;
+ *) cat "$f" >> "$ac_dir/Makefile" ;;
+ esac
+ fi
+ done
+ fi
+ ;;
+ esac
+ done],
+ [# Capture the value of obsolete ALL_LINGUAS because we need it to compute
+ # POFILES, GMOFILES, UPDATEPOFILES, DUMMYPOFILES, CATALOGS. But hide it
+ # from automake.
+ eval 'OBSOLETE_ALL_LINGUAS''="$ALL_LINGUAS"'
+ # Capture the value of LINGUAS because we need it to compute CATALOGS.
+ LINGUAS="${LINGUAS-%UNSET%}"
+ ])
+])
+# progtest.m4 serial 3 (gettext-0.12)
+dnl Copyright (C) 1996-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+dnl
+dnl This file can can be used in projects which are not available under
+dnl the GNU General Public License or the GNU Library General Public
+dnl License but which still want to provide support for the GNU gettext
+dnl functionality.
+dnl Please note that the actual code of the GNU gettext library is covered
+dnl by the GNU Library General Public License, and the rest of the GNU
+dnl gettext package package is covered by the GNU General Public License.
+dnl They are *not* in the public domain.
+
+dnl Authors:
+dnl Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+# Search path for a program which passes the given test.
+
+dnl AM_PATH_PROG_WITH_TEST(VARIABLE, PROG-TO-CHECK-FOR,
+dnl TEST-PERFORMED-ON-FOUND_PROGRAM [, VALUE-IF-NOT-FOUND [, PATH]])
+AC_DEFUN([AM_PATH_PROG_WITH_TEST],
+[
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+ echo "#! /bin/sh" >conf$$.sh
+ echo "exit 0" >>conf$$.sh
+ chmod +x conf$$.sh
+ if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+ PATH_SEPARATOR=';'
+ else
+ PATH_SEPARATOR=:
+ fi
+ rm -f conf$$.sh
+fi
+
+# Find out how to test for executable files. Don't use a zero-byte file,
+# as systems may use methods other than mode bits to determine executability.
+cat >conf$$.file <<_ASEOF
+#! /bin/sh
+exit 0
+_ASEOF
+chmod +x conf$$.file
+if test -x conf$$.file >/dev/null 2>&1; then
+ ac_executable_p="test -x"
+else
+ ac_executable_p="test -f"
+fi
+rm -f conf$$.file
+
+# Extract the first word of "$2", so it can be a program name with args.
+set dummy $2; ac_word=[$]2
+AC_MSG_CHECKING([for $ac_word])
+AC_CACHE_VAL(ac_cv_path_$1,
+[case "[$]$1" in
+ [[\\/]]* | ?:[[\\/]]*)
+ ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
+ ;;
+ *)
+ ac_save_IFS="$IFS"; IFS=$PATH_SEPARATOR
+ for ac_dir in ifelse([$5], , $PATH, [$5]); do
+ IFS="$ac_save_IFS"
+ test -z "$ac_dir" && ac_dir=.
+ for ac_exec_ext in '' $ac_executable_extensions; do
+ if $ac_executable_p "$ac_dir/$ac_word$ac_exec_ext"; then
+ if [$3]; then
+ ac_cv_path_$1="$ac_dir/$ac_word$ac_exec_ext"
+ break 2
+ fi
+ fi
+ done
+ done
+ IFS="$ac_save_IFS"
+dnl If no 4th arg is given, leave the cache variable unset,
+dnl so AC_PATH_PROGS will keep looking.
+ifelse([$4], , , [ test -z "[$]ac_cv_path_$1" && ac_cv_path_$1="$4"
+])dnl
+ ;;
+esac])dnl
+$1="$ac_cv_path_$1"
+if test ifelse([$4], , [-n "[$]$1"], ["[$]$1" != "$4"]); then
+ AC_MSG_RESULT([$]$1)
+else
+ AC_MSG_RESULT(no)
+fi
+AC_SUBST($1)dnl
+])
+# stdint_h.m4 serial 3 (gettext-0.12)
+dnl Copyright (C) 1997-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Paul Eggert.
+
+# Define HAVE_STDINT_H_WITH_UINTMAX if <stdint.h> exists,
+# doesn't clash with <sys/types.h>, and declares uintmax_t.
+
+AC_DEFUN([jm_AC_HEADER_STDINT_H],
+[
+ AC_CACHE_CHECK([for stdint.h], jm_ac_cv_header_stdint_h,
+ [AC_TRY_COMPILE(
+ [#include <sys/types.h>
+#include <stdint.h>],
+ [uintmax_t i = (uintmax_t) -1;],
+ jm_ac_cv_header_stdint_h=yes,
+ jm_ac_cv_header_stdint_h=no)])
+ if test $jm_ac_cv_header_stdint_h = yes; then
+ AC_DEFINE_UNQUOTED(HAVE_STDINT_H_WITH_UINTMAX, 1,
+ [Define if <stdint.h> exists, doesn't clash with <sys/types.h>,
+ and declares uintmax_t. ])
+ fi
+])
+# uintmax_t.m4 serial 7 (gettext-0.12)
+dnl Copyright (C) 1997-2003 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Paul Eggert.
+
+AC_PREREQ(2.13)
+
+# Define uintmax_t to 'unsigned long' or 'unsigned long long'
+# if it is not already defined in <stdint.h> or <inttypes.h>.
+
+AC_DEFUN([jm_AC_TYPE_UINTMAX_T],
+[
+ AC_REQUIRE([jm_AC_HEADER_INTTYPES_H])
+ AC_REQUIRE([jm_AC_HEADER_STDINT_H])
+ if test $jm_ac_cv_header_inttypes_h = no && test $jm_ac_cv_header_stdint_h = no; then
+ AC_REQUIRE([jm_AC_TYPE_UNSIGNED_LONG_LONG])
+ test $ac_cv_type_unsigned_long_long = yes \
+ && ac_type='unsigned long long' \
+ || ac_type='unsigned long'
+ AC_DEFINE_UNQUOTED(uintmax_t, $ac_type,
+ [Define to unsigned long or unsigned long long
+ if <stdint.h> and <inttypes.h> don't define.])
+ else
+ AC_DEFINE(HAVE_UINTMAX_T, 1,
+ [Define if you have the 'uintmax_t' type in <stdint.h> or <inttypes.h>.])
+ fi
+])
+# ulonglong.m4 serial 2 (fileutils-4.0.32, gettext-0.10.40)
+dnl Copyright (C) 1999-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License. As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+dnl From Paul Eggert.
+
+AC_DEFUN([jm_AC_TYPE_UNSIGNED_LONG_LONG],
+[
+ AC_CACHE_CHECK([for unsigned long long], ac_cv_type_unsigned_long_long,
+ [AC_TRY_LINK([unsigned long long ull = 1; int i = 63;],
+ [unsigned long long ullmax = (unsigned long long) -1;
+ return ull << i | ull >> i | ullmax / ull | ullmax % ull;],
+ ac_cv_type_unsigned_long_long=yes,
+ ac_cv_type_unsigned_long_long=no)])
+ if test $ac_cv_type_unsigned_long_long = yes; then
+ AC_DEFINE(HAVE_UNSIGNED_LONG_LONG, 1,
+ [Define if you have the unsigned long long type.])
+ fi
+])
+
+dnl From gnulib
+AC_DEFUN([BASH_FUNC_FPURGE],
+[
+ AC_CHECK_FUNCS_ONCE([fpurge])
+ AC_CHECK_FUNCS_ONCE([__fpurge])
+ AC_CHECK_DECLS([fpurge], , , [#include <stdio.h>])
+])
+
+AC_DEFUN([BASH_FUNC_SNPRINTF],
+[
+ AC_CHECK_FUNCS_ONCE([snprintf])
+ if test X$ac_cv_func_snprintf = Xyes; then
+ AC_CACHE_CHECK([for standard-conformant snprintf], [bash_cv_func_snprintf],
+ [AC_TRY_RUN([
+#include <stdio.h>
+
+main()
+{
+ int n;
+ n = snprintf (0, 0, "%s", "0123456");
+ exit(n != 7);
+}
+], bash_cv_func_snprintf=yes, bash_cv_func_snprintf=no,
+ [AC_MSG_WARN([cannot check standard snprintf if cross-compiling])
+ bash_cv_func_snprintf=yes]
+)])
+ if test $bash_cv_func_snprintf = no; then
+ ac_cv_func_snprintf=no
+ fi
+ fi
+ if test $ac_cv_func_snprintf = no; then
+ AC_DEFINE(HAVE_SNPRINTF, 0,
+ [Define if you have a standard-conformant snprintf function.])
+ fi
+])
+
+AC_DEFUN([BASH_FUNC_VSNPRINTF],
+[
+ AC_CHECK_FUNCS_ONCE([vsnprintf])
+ if test X$ac_cv_func_vsnprintf = Xyes; then
+ AC_CACHE_CHECK([for standard-conformant vsnprintf], [bash_cv_func_vsnprintf],
+ [AC_TRY_RUN([
+#if HAVE_STDARG_H
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+
+static int
+#if HAVE_STDARG_H
+foo(const char *fmt, ...)
+#else
+foo(format, va_alist)
+ const char *format;
+ va_dcl
+#endif
+{
+ va_list args;
+ int n;
+
+#if HAVE_STDARG_H
+ va_start(args, fmt);
+#else
+ va_start(args);
+#endif
+ n = vsnprintf(0, 0, fmt, args);
+ va_end (args);
+ return n;
+}
+
+main()
+{
+ int n;
+ n = foo("%s", "0123456");
+ exit(n != 7);
+}
+], bash_cv_func_vsnprintf=yes, bash_cv_func_vsnprintf=no,
+ [AC_MSG_WARN([cannot check standard vsnprintf if cross-compiling])
+ bash_cv_func_vsnprintf=yes]
+)])
+ if test $bash_cv_func_vsnprintf = no; then
+ ac_cv_func_vsnprintf=no
+ fi
+ fi
+ if test $ac_cv_func_vsnprintf = no; then
+ AC_DEFINE(HAVE_VSNPRINTF, 0,
+ [Define if you have a standard-conformant vsnprintf function.])
+ fi
+])
+
+AC_DEFUN(BASH_STRUCT_WEXITSTATUS_OFFSET,
+[AC_MSG_CHECKING(for offset of exit status in return status from wait)
+AC_CACHE_VAL(bash_cv_wexitstatus_offset,
+[AC_TRY_RUN([
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <sys/wait.h>
+
+main(c, v)
+ int c;
+ char **v;
+{
+ pid_t pid, p;
+ int s, i, n;
+
+ s = 0;
+ pid = fork();
+ if (pid == 0)
+ exit (42);
+
+ /* wait for the process */
+ p = wait(&s);
+ if (p != pid)
+ exit (255);
+
+ /* crack s */
+ for (i = 0; i < (sizeof(s) - 8); i++)
+ {
+ n = (s >> i) & 0xff;
+ if (n == 42)
+ exit (i);
+ }
+
+ exit (254);
+}
+], bash_cv_wexitstatus_offset=0, bash_cv_wexitstatus_offset=$?,
+ [AC_MSG_WARN(cannot check WEXITSTATUS offset if cross compiling -- defaulting to 0)
+ bash_cv_wexitstatus_offset=0]
+)])
+if test "$bash_cv_wexitstatus_offset" -gt 32 ; then
+ AC_MSG_WARN(bad exit status from test program -- defaulting to 0)
+ bash_cv_wexitstatus_offset=0
+fi
+AC_MSG_RESULT($bash_cv_wexitstatus_offset)
+AC_DEFINE_UNQUOTED([WEXITSTATUS_OFFSET], [$bash_cv_wexitstatus_offset], [Offset of exit status in wait status word])
+])
@%:@! /bin/sh
@%:@ From configure.ac for Bash 4.3, version 4.056.
@%:@ Guess values for system-dependent variables and create Makefiles.
-@%:@ Generated by GNU Autoconf 2.68 for bash 4.3-alpha.
+@%:@ Generated by GNU Autoconf 2.69 for bash 4.3-alpha.
@%:@
@%:@ Report bugs to <bug-bash@gnu.org>.
@%:@
@%:@
-@%:@ Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
-@%:@ 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
-@%:@ Foundation, Inc.
+@%:@ Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
@%:@
@%:@
@%:@ This configure script is free software; the Free Software Foundation
# CDPATH.
(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+# Use a proper internal environment variable to ensure we don't fall
+ # into an infinite loop, continuously re-executing ourselves.
+ if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
+ _as_can_reexec=no; export _as_can_reexec;
+ # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in @%:@ ((((
+ *v*x* | *x*v* ) as_opts=-vx ;;
+ *v* ) as_opts=-v ;;
+ *x* ) as_opts=-x ;;
+ * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+as_fn_exit 255
+ fi
+ # We don't want this to propagate to other subprocesses.
+ { _as_can_reexec=; unset _as_can_reexec;}
if test "x$CONFIG_SHELL" = x; then
as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
emulate sh
else
exitcode=1; echo positional parameters were not saved.
fi
-test x\$exitcode = x0 || exit 1"
+test x\$exitcode = x0 || exit 1
+test -x / || exit 1"
as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
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- *x* ) as_opts=-x ;;
- * ) as_opts= ;;
- esac
- exec "$CONFIG_SHELL" $as_opts "$as_myself" ${1+"$@"}
+ export CONFIG_SHELL
+ # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in @%:@ ((((
+ *v*x* | *x*v* ) as_opts=-vx ;;
+ *v* ) as_opts=-v ;;
+ *x* ) as_opts=-x ;;
+ * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
fi
if test x$as_have_required = xno; then :
} @%:@ as_fn_mkdir_p
+
+@%:@ as_fn_executable_p FILE
+@%:@ -----------------------
+@%:@ Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+ test -f "$1" && test -x "$1"
+} @%:@ as_fn_executable_p
@%:@ as_fn_append VAR VALUE
@%:@ ----------------------
@%:@ Append the text in VALUE to the end of the definition contained in VAR. Take
chmod +x "$as_me.lineno" ||
{ $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+ # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
+ # already done that, so ensure we don't try to do so again and fall
+ # in an infinite loop. This has already happened in practice.
+ _as_can_reexec=no; export _as_can_reexec
# Don't try to exec as it changes $[0], causing all sort of problems
# (the dirname of $[0] is not the place where we might find the
# original and so on. Autoconf is especially sensitive to this).
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# 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
- # In both cases, we have to default to `cp -p'.
+ # In both cases, we have to default to `cp -pR'.
ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
elif ln conf$$.file conf$$ 2>/dev/null; then
as_ln_s=ln
else
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
fi
else
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
fi
rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
rmdir conf$$.dir 2>/dev/null
as_mkdir_p=false
fi
-if test -x / >/dev/null 2>&1; then
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- '\'' sh
- '
-fi
-as_executable_p=$as_test_x
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# Sed expression to map a string onto a valid CPP name.
as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
if test "x$host_alias" != x; then
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cross_compiling=yes
fi
if $ac_init_version; then
cat <<\_ACEOF
bash configure 4.3-alpha
-generated by GNU Autoconf 2.68
+generated by GNU Autoconf 2.69
-Copyright (C) 2010 Free Software Foundation, Inc.
+Copyright (C) 2012 Free Software Foundation, Inc.
This configure script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it.
_ACEOF
test ! -s conftest.err
} && test -s conftest$ac_exeext && {
test "$cross_compiling" = yes ||
- $as_test_x conftest$ac_exeext
+ test -x conftest$ac_exeext
}; then :
ac_retval=0
else
main ()
{
static int test_array @<:@1 - 2 * !(($2) >= 0)@:>@;
-test_array @<:@0@:>@ = 0
+test_array @<:@0@:>@ = 0;
+return test_array @<:@0@:>@;
;
return 0;
main ()
{
static int test_array @<:@1 - 2 * !(($2) <= $ac_mid)@:>@;
-test_array @<:@0@:>@ = 0
+test_array @<:@0@:>@ = 0;
+return test_array @<:@0@:>@;
;
return 0;
main ()
{
static int test_array @<:@1 - 2 * !(($2) < 0)@:>@;
-test_array @<:@0@:>@ = 0
+test_array @<:@0@:>@ = 0;
+return test_array @<:@0@:>@;
;
return 0;
main ()
{
static int test_array @<:@1 - 2 * !(($2) >= $ac_mid)@:>@;
-test_array @<:@0@:>@ = 0
+test_array @<:@0@:>@ = 0;
+return test_array @<:@0@:>@;
;
return 0;
main ()
{
static int test_array @<:@1 - 2 * !(($2) <= $ac_mid)@:>@;
-test_array @<:@0@:>@ = 0
+test_array @<:@0@:>@ = 0;
+return test_array @<:@0@:>@;
;
return 0;
running configure, to aid debugging if configure makes a mistake.
It was created by bash $as_me 4.3-alpha, which was
-generated by GNU Autoconf 2.68. Invocation command line was
+generated by GNU Autoconf 2.69. Invocation command line was
$ $0 $@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_CC="${ac_tool_prefix}gcc"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
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test -z "$as_dir" && as_dir=.
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- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_ac_ct_CC="gcc"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
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test -z "$as_dir" && as_dir=.
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- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
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ac_cv_prog_CC="${ac_tool_prefix}cc"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
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- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
ac_prog_rejected=yes
continue
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
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ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
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ac_cv_prog_ac_ct_CC="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
/* end confdefs.h. */
#include <stdarg.h>
#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
+struct stat;
/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */
struct buf { int x; };
FILE * (*rcsopen) (struct buf *, struct stat *, int);
for ac_prog in grep ggrep; do
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ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
- { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
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# Check for GNU ac_path_GREP and select it if it is found.
# Check for GNU $ac_path_GREP
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ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
- { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
+ as_fn_executable_p "$ac_path_EGREP" || continue
# Check for GNU ac_path_EGREP and select it if it is found.
# Check for GNU $ac_path_EGREP
case `"$ac_path_EGREP" --version 2>&1` in
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
-# define __EXTENSIONS__ 1
- $ac_includes_default
+# define __EXTENSIONS__ 1
+ $ac_includes_default
int
main ()
{
esac
rm -rf conftest*
fi
+
+
fi
# by default.
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- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
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- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
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- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
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ac_cv_prog_ac_ct_RANLIB="ranlib"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
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- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
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ac_cv_prog_YACC="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
int
main ()
{
-/* FIXME: Include the comments suggested by Paul. */
+
#ifndef __cplusplus
- /* Ultrix mips cc rejects this. */
+ /* Ultrix mips cc rejects this sort of thing. */
typedef int charset[2];
- const charset cs;
+ const charset cs = { 0, 0 };
/* SunOS 4.1.1 cc rejects this. */
char const *const *pcpcc;
char **ppc;
++pcpcc;
ppc = (char**) pcpcc;
pcpcc = (char const *const *) ppc;
- { /* SCO 3.2v4 cc rejects this. */
- char *t;
+ { /* SCO 3.2v4 cc rejects this sort of thing. */
+ char tx;
+ char *t = &tx;
char const *s = 0 ? (char *) 0 : (char const *) 0;
*t++ = 0;
iptr p = 0;
++p;
}
- { /* AIX XL C 1.02.0.0 rejects this saying
+ { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying
"k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
- struct s { int j; const int *ap[3]; };
- struct s *b; b->j = 5;
+ struct s { int j; const int *ap[3]; } bx;
+ struct s *b = &bx; b->j = 5;
}
{ /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
const int foo = 10;
- (LDBL_MANT_DIG < DBL_MANT_DIG)))
&& (int) LDBL_EPSILON == 0
)@:>@;
-test_array @<:@0@:>@ = 0
+test_array @<:@0@:>@ = 0;
+return test_array @<:@0@:>@;
;
return 0;
main ()
{
static int test_array @<:@1 - 2 * !(((char) -1) < 0)@:>@;
-test_array @<:@0@:>@ = 0
+test_array @<:@0@:>@ = 0;
+return test_array @<:@0@:>@;
;
return 0;
IFS=$as_save_IFS
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for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_path_GMSGFMT="$as_dir/$ac_word$ac_exec_ext"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
/* end confdefs.h. */
$ac_includes_default
int
-find_stack_direction ()
+find_stack_direction (int *addr, int depth)
{
- static char *addr = 0;
- auto char dummy;
- if (addr == 0)
- {
- addr = &dummy;
- return find_stack_direction ();
- }
- else
- return (&dummy > addr) ? 1 : -1;
+ int dir, dummy = 0;
+ if (! addr)
+ addr = &dummy;
+ *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
+ dir = depth ? find_stack_direction (addr, depth - 1) : 0;
+ return dir + dummy;
}
int
-main ()
+main (int argc, char **argv)
{
- return find_stack_direction () < 0;
+ return find_stack_direction (0, argc + !argv + 20) < 0;
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_INTLBISON="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
/* end confdefs.h. */
$ac_includes_default
int
-find_stack_direction ()
+find_stack_direction (int *addr, int depth)
{
- static char *addr = 0;
- auto char dummy;
- if (addr == 0)
- {
- addr = &dummy;
- return find_stack_direction ();
- }
- else
- return (&dummy > addr) ? 1 : -1;
+ int dir, dummy = 0;
+ if (! addr)
+ addr = &dummy;
+ *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
+ dir = depth ? find_stack_direction (addr, depth - 1) : 0;
+ return dir + dummy;
}
int
-main ()
+main (int argc, char **argv)
{
- return find_stack_direction () < 0;
+ return find_stack_direction (0, argc + !argv + 20) < 0;
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $bash_cv_wcwidth_broken" >&5
$as_echo "$bash_cv_wcwidth_broken" >&6; }
-if test $bash_cv_wcwidth_broken = yes; then
+if test "$bash_cv_wcwidth_broken" = yes; then
$as_echo "@%:@define WCWIDTH_BROKEN 1" >>confdefs.h
# ... but there are two gotchas:
# 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
# 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
- # In both cases, we have to default to `cp -p'.
+ # In both cases, we have to default to `cp -pR'.
ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
elif ln conf$$.file conf$$ 2>/dev/null; then
as_ln_s=ln
else
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
fi
else
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
fi
rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
rmdir conf$$.dir 2>/dev/null
as_mkdir_p=false
fi
-if test -x / >/dev/null 2>&1; then
- as_test_x='test -x'
-else
- if ls -dL / >/dev/null 2>&1; then
- as_ls_L_option=L
- else
- as_ls_L_option=
- fi
- as_test_x='
- eval sh -c '\''
- if test -d "$1"; then
- test -d "$1/.";
- else
- case $1 in @%:@(
- -*)set "./$1";;
- esac;
- case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in @%:@((
- ???[sx]*):;;*)false;;esac;fi
- '\'' sh
- '
-fi
-as_executable_p=$as_test_x
+
+@%:@ as_fn_executable_p FILE
+@%:@ -----------------------
+@%:@ Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+ test -f "$1" && test -x "$1"
+} @%:@ as_fn_executable_p
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
# Sed expression to map a string onto a valid CPP name.
as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
# values after options handling.
ac_log="
This file was extended by bash $as_me 4.3-alpha, which was
-generated by GNU Autoconf 2.68. Invocation command line was
+generated by GNU Autoconf 2.69. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
CONFIG_HEADERS = $CONFIG_HEADERS
ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
ac_cs_version="\\
bash config.status 4.3-alpha
-configured by $0, generated by GNU Autoconf 2.68,
+configured by $0, generated by GNU Autoconf 2.69,
with options \\"\$ac_cs_config\\"
-Copyright (C) 2010 Free Software Foundation, Inc.
+Copyright (C) 2012 Free Software Foundation, Inc.
This config.status script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it."
_ACEOF
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
if \$ac_cs_recheck; then
- set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+ set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
shift
\$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
CONFIG_SHELL='$SHELL'
'm4_sinclude' => 1,
'AM_MAINTAINER_MODE' => 1,
'AM_NLS' => 1,
+ 'AC_FC_PP_DEFINE' => 1,
'AM_GNU_GETTEXT_INTL_SUBDIR' => 1,
'_m4_warn' => 1,
'AM_MAKEFILE_INCLUDE' => 1,
'AM_PROG_FC_C_O' => 1,
'AC_FC_FREEFORM' => 1,
'AH_OUTPUT' => 1,
+ 'AC_FC_PP_SRCEXT' => 1,
'AC_CONFIG_AUX_DIR' => 1,
'_AM_SUBST_NOTMAKE' => 1,
'm4_pattern_allow' => 1,
m4trace:configure.ac:106: -1- AC_SUBST_TRACE([DEBUGGER_START_FILE])
m4trace:configure.ac:106: -1- m4_pattern_allow([^DEBUGGER_START_FILE$])
m4trace:configure.ac:110: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:110: the top level])
m4trace:configure.ac:111: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:111: the top level])
m4trace:configure.ac:112: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:112: the top level])
m4trace:configure.ac:113: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:113: the top level])
m4trace:configure.ac:114: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:114: the top level])
m4trace:configure.ac:115: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:115: the top level])
m4trace:configure.ac:116: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:116: the top level])
m4trace:configure.ac:127: -1- AC_DEFINE_TRACE_LITERAL([USING_BASH_MALLOC])
m4trace:configure.ac:127: -1- m4_pattern_allow([^USING_BASH_MALLOC$])
m4trace:configure.ac:147: -1- AC_DEFINE_TRACE_LITERAL([AFS])
m4trace:configure.ac:147: -1- m4_pattern_allow([^AFS$])
m4trace:configure.ac:200: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:200: the top level])
m4trace:configure.ac:216: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:216: the top level])
m4trace:configure.ac:217: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:217: the top level])
m4trace:configure.ac:218: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:218: the top level])
m4trace:configure.ac:219: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:219: the top level])
m4trace:configure.ac:220: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:220: the top level])
m4trace:configure.ac:221: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:221: the top level])
m4trace:configure.ac:222: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:222: the top level])
m4trace:configure.ac:223: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:223: the top level])
m4trace:configure.ac:224: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:224: the top level])
m4trace:configure.ac:225: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:225: the top level])
m4trace:configure.ac:226: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:226: the top level])
m4trace:configure.ac:227: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:227: the top level])
m4trace:configure.ac:228: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:228: the top level])
m4trace:configure.ac:229: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:229: the top level])
m4trace:configure.ac:230: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:230: the top level])
m4trace:configure.ac:231: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:231: the top level])
m4trace:configure.ac:232: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:232: the top level])
m4trace:configure.ac:233: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:233: the top level])
m4trace:configure.ac:234: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:234: the top level])
m4trace:configure.ac:235: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:235: the top level])
m4trace:configure.ac:236: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:236: the top level])
m4trace:configure.ac:237: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:237: the top level])
m4trace:configure.ac:238: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:238: the top level])
m4trace:configure.ac:239: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:239: the top level])
m4trace:configure.ac:240: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:240: the top level])
m4trace:configure.ac:241: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:241: the top level])
m4trace:configure.ac:242: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:242: the top level])
m4trace:configure.ac:243: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:243: the top level])
m4trace:configure.ac:244: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:244: the top level])
m4trace:configure.ac:245: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:245: the top level])
m4trace:configure.ac:246: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:246: the top level])
m4trace:configure.ac:247: -2- _m4_warn([obsolete], [The macro `AC_HELP_STRING' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:247: the top level])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:248: the top level])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:249: the top level])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:252: the top level])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:253: the top level])
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-You should run autoupdate.], [../../lib/autoconf/general.m4:209: AC_HELP_STRING is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:207: AC_HELP_STRING is expanded from...
configure.ac:254: the top level])
m4trace:configure.ac:257: -1- AC_SUBST([CC_FOR_BUILD])
m4trace:configure.ac:257: -1- AC_SUBST_TRACE([CC_FOR_BUILD])
m4trace:configure.ac:404: -1- AC_SUBST_TRACE([OBJEXT])
m4trace:configure.ac:404: -1- m4_pattern_allow([^OBJEXT$])
m4trace:configure.ac:408: -1- _m4_warn([obsolete], [The macro `AC_MINIX' is obsolete.
-You should run autoupdate.], [../../lib/autoconf/specific.m4:437: AC_MINIX is expanded from...
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m4trace:configure.ac:408: -1- AC_SUBST([CPP])
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m4trace:configure.ac:410: -1- m4_pattern_allow([^_LARGE_FILES$])
m4trace:configure.ac:410: -1- AH_OUTPUT([_LARGE_FILES], [/* Define for large files, on AIX-style hosts. */
@%:@undef _LARGE_FILES])
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m4trace:configure.ac:447: -1- AC_SUBST_TRACE([CROSS_COMPILE])
m4trace:configure.ac:447: -1- m4_pattern_allow([^CROSS_COMPILE$])
m4trace:configure.ac:520: -1- AC_SUBST_TRACE([LIBS_FOR_BUILD])
m4trace:configure.ac:520: -1- m4_pattern_allow([^LIBS_FOR_BUILD$])
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
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configure.ac:534: the top level])
m4trace:configure.ac:534: -1- AC_DEFINE_TRACE_LITERAL([RL_READLINE_VERSION])
m4trace:configure.ac:675: -1- AH_OUTPUT([HAVE_STRINGIZE], [/* Define to 1 if cpp supports the ANSI @%:@ stringizing operator. */
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m4trace:configure.ac:676: -1- _m4_warn([obsolete], [The macro `AC_C_LONG_DOUBLE' is obsolete.
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+You should run autoupdate.], [../../lib/autoconf/types.m4:452: AC_C_LONG_DOUBLE is expanded from...
configure.ac:676: the top level])
m4trace:configure.ac:676: -1- AC_DEFINE_TRACE_LITERAL([HAVE_LONG_DOUBLE_WIDER])
m4trace:configure.ac:676: -1- m4_pattern_allow([^HAVE_LONG_DOUBLE_WIDER$])
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m4trace:configure.ac:683: -1- m4_pattern_allow([^MSGMERGE$])
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aclocal.m4:3707: AM_PO_SUBDIRS is expanded from...
aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
configure.ac:683: the top level])
m4trace:configure.ac:683: -1- AC_SUBST_TRACE([GLIBC21])
m4trace:configure.ac:683: -1- m4_pattern_allow([^GLIBC21$])
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-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
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+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
aclocal.m4:2613: gt_INTDIV0 is expanded from...
aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
m4trace:configure.ac:683: -1- AH_OUTPUT([INTDIV0_RAISES_SIGFPE], [/* Define if integer division by zero raises signal SIGFPE. */
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
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+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
aclocal.m4:2715: jm_AC_HEADER_INTTYPES_H is expanded from...
aclocal.m4:4016: jm_AC_TYPE_UINTMAX_T is expanded from...
aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
declares uintmax_t. */
@%:@undef HAVE_INTTYPES_H_WITH_UINTMAX])
m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_COMPILE' is obsolete.
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
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+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
aclocal.m4:3986: jm_AC_HEADER_STDINT_H is expanded from...
aclocal.m4:4016: jm_AC_TYPE_UINTMAX_T is expanded from...
aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
uintmax_t. */
@%:@undef HAVE_STDINT_H_WITH_UINTMAX])
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
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+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
aclocal.m4:4043: jm_AC_TYPE_UNSIGNED_LONG_LONG is expanded from...
aclocal.m4:4016: jm_AC_TYPE_UINTMAX_T is expanded from...
aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
m4trace:configure.ac:683: -1- AH_OUTPUT([HAVE_UINTMAX_T], [/* Define if you have the \'uintmax_t\' type in <stdint.h> or <inttypes.h>. */
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-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
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+../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
aclocal.m4:2688: gt_HEADER_INTTYPES_H is expanded from...
aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
m4trace:configure.ac:683: -1- AH_OUTPUT([HAVE_INTTYPES_H], [/* Define if <inttypes.h> exists and doesn\'t clash with <sys/types.h>. */
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-../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
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+../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
aclocal.m4:2743: gt_INTTYPES_PRI is expanded from...
aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
m4trace:configure.ac:683: -1- AH_OUTPUT([HAVE___FSETLOCKING], [/* Define to 1 if you have the `__fsetlocking\' function. */
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m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
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+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
aclocal.m4:2521: AM_ICONV_LINK is expanded from...
aclocal.m4:2576: AM_ICONV is expanded from...
aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
configure.ac:683: the top level])
m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
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-../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
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+../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
aclocal.m4:2521: AM_ICONV_LINK is expanded from...
aclocal.m4:2576: AM_ICONV is expanded from...
aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
m4trace:configure.ac:683: -1- AC_SUBST_TRACE([LTLIBICONV])
m4trace:configure.ac:683: -1- m4_pattern_allow([^LTLIBICONV$])
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
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aclocal.m4:2576: AM_ICONV is expanded from...
aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
m4trace:configure.ac:683: -1- AH_OUTPUT([ICONV_CONST], [/* Define as const if the declaration of iconv() needs const. */
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m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
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+../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
aclocal.m4:2040: AM_LANGINFO_CODESET is expanded from...
aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
m4trace:configure.ac:683: -1- AH_OUTPUT([HAVE_LANGINFO_CODESET], [/* Define if you have <langinfo.h> and nl_langinfo(CODESET). */
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
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+../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
aclocal.m4:2810: AM_LC_MESSAGES is expanded from...
aclocal.m4:2399: AM_INTL_SUBDIR is expanded from...
aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
m4trace:configure.ac:683: -1- AC_SUBST_TRACE([USE_NLS])
m4trace:configure.ac:683: -1- m4_pattern_allow([^USE_NLS$])
m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
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aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
configure.ac:683: the top level])
m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
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aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
configure.ac:683: the top level])
m4trace:configure.ac:683: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
-../../lib/autoconf/general.m4:2053: AC_CACHE_CHECK is expanded from...
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+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
+../../lib/autoconf/general.m4:2052: AC_CACHE_CHECK is expanded from...
aclocal.m4:2111: AM_GNU_GETTEXT is expanded from...
configure.ac:683: the top level])
m4trace:configure.ac:683: -1- AC_DEFINE_TRACE_LITERAL([ENABLE_NLS])
m4trace:configure.ac:710: -1- m4_pattern_allow([^GETPGRP_VOID$])
m4trace:configure.ac:710: -1- AH_OUTPUT([GETPGRP_VOID], [/* Define to 1 if the `getpgrp\' function requires zero arguments. */
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configure.ac:711: the top level])
m4trace:configure.ac:712: -1- AH_OUTPUT([HAVE_VPRINTF], [/* Define to 1 if you have the `vprintf\' function. */
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configure.ac:743: the top level])
m4trace:configure.ac:743: -1- AC_DEFINE_TRACE_LITERAL([RETSIGTYPE])
m4trace:configure.ac:743: -1- m4_pattern_allow([^RETSIGTYPE$])
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2881: AC_CHECK_DECLS is expanded from...
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configure.ac:785: the top level])
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m4trace:configure.ac:785: -1- m4_pattern_allow([^STRTOLD_BROKEN$])
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aclocal.m4:103: BASH_CHECK_DECL is expanded from...
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m4trace:configure.ac:802: -1- _m4_warn([obsolete], [The macro `AC_TRY_LINK' is obsolete.
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configure.ac:971: the top level])
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configure.ac:972: the top level])
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aclocal.m4:624: BASH_FUNC_STD_PUTENV is expanded from...
configure.ac:978: the top level])
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aclocal.m4:654: BASH_FUNC_STD_UNSETENV is expanded from...
configure.ac:983: the top level])
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aclocal.m4:878: BASH_FUNC_PRINTF_A_FORMAT is expanded from...
configure.ac:988: the top level])
m4trace:configure.ac:988: -1- AC_DEFINE_TRACE_LITERAL([HAVE_PRINTF_A_FORMAT])
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
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aclocal.m4:1297: BASH_SYS_REINSTALL_SIGHANDLERS is expanded from...
configure.ac:991: the top level])
m4trace:configure.ac:991: -1- AC_DEFINE_TRACE_LITERAL([MUST_REINSTALL_SIGHANDLERS])
m4trace:configure.ac:991: -1- m4_pattern_allow([^MUST_REINSTALL_SIGHANDLERS$])
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aclocal.m4:1356: BASH_SYS_JOB_CONTROL_MISSING is expanded from...
configure.ac:992: the top level])
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aclocal.m4:1415: BASH_SYS_NAMED_PIPES is expanded from...
configure.ac:993: the top level])
m4trace:configure.ac:993: -1- AC_DEFINE_TRACE_LITERAL([NAMED_PIPES_MISSING])
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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aclocal.m4:1496: BASH_HAVE_TIOCSTAT is expanded from...
configure.ac:997: the top level])
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
+You should run autoupdate.], [../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
aclocal.m4:1508: BASH_HAVE_FIONREAD is expanded from...
configure.ac:998: the top level])
m4trace:configure.ac:998: -1- AC_DEFINE_TRACE_LITERAL([FIONREAD_IN_SYS_IOCTL])
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aclocal.m4:1964: BASH_CHECK_WCONTINUED is expanded from...
configure.ac:1000: the top level])
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aclocal.m4:1526: BASH_CHECK_SPEED_T is expanded from...
configure.ac:1003: the top level])
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
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+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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aclocal.m4:1653: BASH_CHECK_RTSIGS is expanded from...
configure.ac:1005: the top level])
m4trace:configure.ac:1005: -1- AC_DEFINE_TRACE_LITERAL([UNUSABLE_RT_SIGNALS])
m4trace:configure.ac:1006: -1- AC_SUBST_TRACE([SIGLIST_O])
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
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+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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aclocal.m4:1605: BASH_CHECK_KERNEL_RLIMIT is expanded from...
configure.ac:1010: the top level])
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-../../lib/autoconf/general.m4:2607: AC_COMPILE_IFELSE is expanded from...
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-../../lib/m4sugar/m4sh.m4:606: AS_IF is expanded from...
-../../lib/autoconf/general.m4:2032: AC_CACHE_VAL is expanded from...
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+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
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+../../lib/autoconf/general.m4:2606: AC_COMPILE_IFELSE is expanded from...
+../../lib/autoconf/general.m4:2614: AC_TRY_COMPILE is expanded from...
+../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
+../../lib/autoconf/general.m4:2031: AC_CACHE_VAL is expanded from...
aclocal.m4:1605: BASH_CHECK_KERNEL_RLIMIT is expanded from...
configure.ac:1010: the top level])
m4trace:configure.ac:1010: -1- AC_DEFINE_TRACE_LITERAL([RLIMIT_NEEDS_KERNEL])
allow_null_glob_expansion = glob_dot_filenames = 0;
cdable_vars = mail_warning = 0;
no_exit_on_failed_exec = print_shift_error = 0;
- check_hashed_filenames = cdspelling = expand_aliases = check_window_size = 0;
+ check_hashed_filenames = cdspelling = expand_aliases = 0;
source_uses_path = promptvars = 1;
+ check_window_size = CHECKWINSIZE_DEFAULT;
+
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extended_glob = 0;
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# Guess values for system-dependent variables and create Makefiles.
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#
# Report bugs to <bug-bash@gnu.org>.
#
#
-# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
-# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
-# Foundation, Inc.
+# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
#
#
# This configure script is free software; the Free Software Foundation
# CDPATH.
(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
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rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
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cross_compiling=yes
fi
if $ac_init_version; then
cat <<\_ACEOF
bash configure 4.3-alpha
-generated by GNU Autoconf 2.68
+generated by GNU Autoconf 2.69
-Copyright (C) 2010 Free Software Foundation, Inc.
+Copyright (C) 2012 Free Software Foundation, Inc.
This configure script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it.
_ACEOF
test ! -s conftest.err
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test "$cross_compiling" = yes ||
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ac_retval=0
else
main ()
{
static int test_array [1 - 2 * !(($2) >= 0)];
-test_array [0] = 0
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;
return 0;
main ()
{
static int test_array [1 - 2 * !(($2) <= $ac_mid)];
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;
return 0;
main ()
{
static int test_array [1 - 2 * !(($2) < 0)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
main ()
{
static int test_array [1 - 2 * !(($2) >= $ac_mid)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
main ()
{
static int test_array [1 - 2 * !(($2) <= $ac_mid)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
running configure, to aid debugging if configure makes a mistake.
It was created by bash $as_me 4.3-alpha, which was
-generated by GNU Autoconf 2.68. Invocation command line was
+generated by GNU Autoconf 2.69. Invocation command line was
$ $0 $@
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_CC="${ac_tool_prefix}gcc"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_ac_ct_CC="gcc"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_CC="${ac_tool_prefix}cc"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
ac_prog_rejected=yes
continue
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_ac_ct_CC="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
/* end confdefs.h. */
#include <stdarg.h>
#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
+struct stat;
/* Most of the following tests are stolen from RCS 5.7's src/conf.sh. */
struct buf { int x; };
FILE * (*rcsopen) (struct buf *, struct stat *, int);
for ac_prog in grep ggrep; do
for ac_exec_ext in '' $ac_executable_extensions; do
ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
- { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
+ as_fn_executable_p "$ac_path_GREP" || continue
# Check for GNU ac_path_GREP and select it if it is found.
# Check for GNU $ac_path_GREP
case `"$ac_path_GREP" --version 2>&1` in
for ac_prog in egrep; do
for ac_exec_ext in '' $ac_executable_extensions; do
ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
- { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
+ as_fn_executable_p "$ac_path_EGREP" || continue
# Check for GNU ac_path_EGREP and select it if it is found.
# Check for GNU $ac_path_EGREP
case `"$ac_path_EGREP" --version 2>&1` in
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
-# define __EXTENSIONS__ 1
- $ac_includes_default
+# define __EXTENSIONS__ 1
+ $ac_includes_default
int
main ()
{
esac
rm -rf conftest*
fi
+
+
fi
# by default.
for ac_prog in ginstall scoinst install; do
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
if test $ac_prog = install &&
grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
# AIX install. It has an incompatible calling convention.
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_AR="${ac_tool_prefix}ar"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_ac_ct_AR="ar"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_ac_ct_RANLIB="ranlib"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_YACC="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
int
main ()
{
-/* FIXME: Include the comments suggested by Paul. */
+
#ifndef __cplusplus
- /* Ultrix mips cc rejects this. */
+ /* Ultrix mips cc rejects this sort of thing. */
typedef int charset[2];
- const charset cs;
+ const charset cs = { 0, 0 };
/* SunOS 4.1.1 cc rejects this. */
char const *const *pcpcc;
char **ppc;
++pcpcc;
ppc = (char**) pcpcc;
pcpcc = (char const *const *) ppc;
- { /* SCO 3.2v4 cc rejects this. */
- char *t;
+ { /* SCO 3.2v4 cc rejects this sort of thing. */
+ char tx;
+ char *t = &tx;
char const *s = 0 ? (char *) 0 : (char const *) 0;
*t++ = 0;
iptr p = 0;
++p;
}
- { /* AIX XL C 1.02.0.0 rejects this saying
+ { /* AIX XL C 1.02.0.0 rejects this sort of thing, saying
"k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
- struct s { int j; const int *ap[3]; };
- struct s *b; b->j = 5;
+ struct s { int j; const int *ap[3]; } bx;
+ struct s *b = &bx; b->j = 5;
}
{ /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
const int foo = 10;
- (LDBL_MANT_DIG < DBL_MANT_DIG)))
&& (int) LDBL_EPSILON == 0
)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
main ()
{
static int test_array [1 - 2 * !(((char) -1) < 0)];
-test_array [0] = 0
+test_array [0] = 0;
+return test_array [0];
;
return 0;
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_path_GMSGFMT="$as_dir/$ac_word$ac_exec_ext"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
/* end confdefs.h. */
$ac_includes_default
int
-find_stack_direction ()
+find_stack_direction (int *addr, int depth)
{
- static char *addr = 0;
- auto char dummy;
- if (addr == 0)
- {
- addr = &dummy;
- return find_stack_direction ();
- }
- else
- return (&dummy > addr) ? 1 : -1;
+ int dir, dummy = 0;
+ if (! addr)
+ addr = &dummy;
+ *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
+ dir = depth ? find_stack_direction (addr, depth - 1) : 0;
+ return dir + dummy;
}
int
-main ()
+main (int argc, char **argv)
{
- return find_stack_direction () < 0;
+ return find_stack_direction (0, argc + !argv + 20) < 0;
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
IFS=$as_save_IFS
test -z "$as_dir" && as_dir=.
for ac_exec_ext in '' $ac_executable_extensions; do
- if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+ if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
ac_cv_prog_INTLBISON="$ac_prog"
$as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
break 2
/* end confdefs.h. */
$ac_includes_default
int
-find_stack_direction ()
+find_stack_direction (int *addr, int depth)
{
- static char *addr = 0;
- auto char dummy;
- if (addr == 0)
- {
- addr = &dummy;
- return find_stack_direction ();
- }
- else
- return (&dummy > addr) ? 1 : -1;
+ int dir, dummy = 0;
+ if (! addr)
+ addr = &dummy;
+ *addr = addr < &dummy ? 1 : addr == &dummy ? 0 : -1;
+ dir = depth ? find_stack_direction (addr, depth - 1) : 0;
+ return dir + dummy;
}
int
-main ()
+main (int argc, char **argv)
{
- return find_stack_direction () < 0;
+ return find_stack_direction (0, argc + !argv + 20) < 0;
}
_ACEOF
if ac_fn_c_try_run "$LINENO"; then :
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $bash_cv_wcwidth_broken" >&5
$as_echo "$bash_cv_wcwidth_broken" >&6; }
-if test $bash_cv_wcwidth_broken = yes; then
+if test "$bash_cv_wcwidth_broken" = yes; then
$as_echo "#define WCWIDTH_BROKEN 1" >>confdefs.h
# ... but there are two gotchas:
# 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
# 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
- # In both cases, we have to default to `cp -p'.
+ # In both cases, we have to default to `cp -pR'.
ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
elif ln conf$$.file conf$$ 2>/dev/null; then
as_ln_s=ln
else
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
fi
else
- as_ln_s='cp -p'
+ as_ln_s='cp -pR'
fi
rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
rmdir conf$$.dir 2>/dev/null
as_mkdir_p=false
fi
-if test -x / >/dev/null 2>&1; then
- as_test_x='test -x'
-else
- if ls -dL / >/dev/null 2>&1; then
- as_ls_L_option=L
- else
- as_ls_L_option=
- fi
- as_test_x='
- eval sh -c '\''
- if test -d "$1"; then
- test -d "$1/.";
- else
- case $1 in #(
- -*)set "./$1";;
- esac;
- case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
- ???[sx]*):;;*)false;;esac;fi
- '\'' sh
- '
-fi
-as_executable_p=$as_test_x
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+ test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
# Sed expression to map a string onto a valid CPP name.
as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
# values after options handling.
ac_log="
This file was extended by bash $as_me 4.3-alpha, which was
-generated by GNU Autoconf 2.68. Invocation command line was
+generated by GNU Autoconf 2.69. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
CONFIG_HEADERS = $CONFIG_HEADERS
ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
ac_cs_version="\\
bash config.status 4.3-alpha
-configured by $0, generated by GNU Autoconf 2.68,
+configured by $0, generated by GNU Autoconf 2.69,
with options \\"\$ac_cs_config\\"
-Copyright (C) 2010 Free Software Foundation, Inc.
+Copyright (C) 2012 Free Software Foundation, Inc.
This config.status script is free software; the Free Software Foundation
gives unlimited permission to copy, distribute and modify it."
_ACEOF
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
if \$ac_cs_recheck; then
- set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+ set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
shift
\$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
CONFIG_SHELL='$SHELL'
--- /dev/null
+# This file is a shell script that caches the results of configure
+# tests for CYGWIN32 so they don't need to be done when cross-compiling.
+
+# AC_FUNC_GETPGRP should also define GETPGRP_VOID
+ac_cv_func_getpgrp_void=${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.
@node GNU Parallel
@subsection GNU Parallel
+There are ways to run commands in parallel that are not built into Bash.
+GNU Parallel is a tool to do just that.
+
GNU Parallel, as its name suggests, can be used to build and run commands
in parallel. You may run the same command with different arguments, whether
-they are filenames, usernames, hostnames, or lines read from files.
+they are filenames, usernames, hostnames, or lines read from files. GNU
+Parallel provides shorthand references to many of the most common operations
+(input lines, various portions of the input line, different ways to specify
+the input source, and so on). Parallel can replace @code{xargs} or feed
+commands from its input sources to several different instances of Bash.
For a complete description, refer to the GNU Parallel documentation. A few
examples should provide a brief introduction to its use.
-For example, it is easy to prefix each line in a text file with a specified
-string:
+For example, it is easy to replace @code{xargs} to gzip all html files in the
+current directory and its subdirectories:
@example
-cat file | parallel -k echo prefix_string
+find . -type f -name '*.html' -print | parallel gzip
@end example
@noindent
-The @option{-k} option is required to preserve the lines' order.
-
-Similarly, you can append a specified string to each line in a text file:
-@example
-cat file | parallel -k echo @{@} append_string
-@end example
+If you need to protect special characters such as newlines in file names,
+use find's @option{-print0} option and parallel's @option{-0} option.
You can use Parallel to move files from the current directory when the
number of files is too large to process with one @code{mv} invocation:
@end example
As you can see, the @{@} is replaced with each line read from standard input.
+While using @code{ls} will work in most instances, it is not sufficient to
+deal with all filenames.
+If you need to accommodate special characters in filenames, you can use
+
+@example
+find . -depth 1 \! -name '.*' -print0 | parallel -0 mv @{@} destdir
+@end example
+
+@noindent
+as alluded to above.
+
This will run as many @code{mv} commands as there are files in the current
-directory. You can emulate a parallel @code{xargs} by adding the @option{-X}
-option:
+directory.
+You can emulate a parallel @code{xargs} by adding the @option{-X} option:
@example
-ls | parallel -X mv @{@} destdir
+find . -depth 1 \! -name '.*' -print0 | parallel -0 -X mv @{@} destdir
@end example
GNU Parallel can replace certain common idioms that operate on lines read
-from a file (in this case, filenames):
+from a file (in this case, filenames listed one per line):
@example
- for x in $(cat list); do
- do-something1 $x config-$x
- do-something2 < $x
- done | process-output
+ while read -r x; do
+ do-something1 "$x" "config-$x"
+ do-something2 < "$x"
+ done < file | process-output
@end example
@noindent
@end example
@noindent
This will recompress all files in the current directory with names ending
-in .gz using bzip2, running one job per CPU (-j+0) in parallel.
+in .gz using bzip2, running one job per CPU (-j+0) in parallel.
+(We use @code{ls} for brevity here; using @code{find} as above is more
+robust in the face of filenames containing unexpected characters.)
+Parallel can take arguments from the command line; the above can also be
+written as
+
+@example
+parallel "zcat {} | bzip2 >{.}.bz2 && rm {}" ::: *.gz
+@end example
If a command generates output, you may want to preserve the input order in
the output. For instance, the following command
@{ echo foss.org.my ; echo debian.org; echo freenetproject.org; @} | parallel traceroute
@end example
@noindent
-will display as output the traceroute invocation that finishes first. Using
-the @option{-k} option, as we saw above
+will display as output the traceroute invocation that finishes first.
+Adding the @option{-k} option
@example
@{ echo foss.org.my ; echo debian.org; echo freenetproject.org; @} | parallel -k traceroute
@end example
@noindent
will ensure that the output of @code{traceroute foss.org.my} is displayed first.
+Finally, Parallel can be used to run a sequence of shell commands in parallel,
+similar to @samp{cat file | bash}.
+It is not uncommon to take a list of filenames, create a series of shell
+commands to operate on them, and feed that list of commnds to a shell.
+Parallel can speed this up. Assuming that @file{file} contains a list of
+shell commands, one per line,
+
+@example
+parallel -j 10 < file
+@end example
+
+@noindent
+will evaluate the commands using the shell (since no explicit command is
+supplied as an argument), in blocks of ten shell jobs at a time.
+
@node Shell Functions
@section Shell Functions
@cindex shell function
--- /dev/null
+\input texinfo.tex @c -*- texinfo -*-
+@c %**start of header
+@setfilename bashref.info
+@settitle Bash Reference Manual
+
+@include version.texi
+@c %**end of header
+
+@copying
+This text is a brief description of the features that are present in
+the Bash shell (version @value{VERSION}, @value{UPDATED}).
+
+This is Edition @value{EDITION}, last updated @value{UPDATED},
+of @cite{The GNU Bash Reference Manual},
+for @code{Bash}, Version @value{VERSION}.
+
+Copyright @copyright{} 1988--2013 Free Software Foundation, Inc.
+
+@quotation
+Permission is granted to copy, distribute and/or modify this document
+under the terms of the GNU Free Documentation License, Version 1.3 or
+any later version published by the Free Software Foundation; with no
+Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
+A copy of the license is included in the section entitled
+``GNU Free Documentation License''.
+@end quotation
+@end copying
+
+@defcodeindex bt
+@defcodeindex rw
+@set BashFeatures
+
+@dircategory Basics
+@direntry
+* Bash: (bash). The GNU Bourne-Again SHell.
+@end direntry
+
+@finalout
+
+@titlepage
+@title Bash Reference Manual
+@subtitle Reference Documentation for Bash
+@subtitle Edition @value{EDITION}, for @code{Bash} Version @value{VERSION}.
+@subtitle @value{UPDATED-MONTH}
+@author Chet Ramey, Case Western Reserve University
+@author Brian Fox, Free Software Foundation
+
+@page
+@vskip 0pt plus 1filll
+@insertcopying
+
+@end titlepage
+
+@contents
+
+@ifnottex
+@node Top, Introduction, (dir), (dir)
+@top Bash Features
+
+This text is a brief description of the features that are present in
+the Bash shell (version @value{VERSION}, @value{UPDATED}).
+The Bash home page is @url{http://www.gnu.org/software/bash/}.
+
+This is Edition @value{EDITION}, last updated @value{UPDATED},
+of @cite{The GNU Bash Reference Manual},
+for @code{Bash}, Version @value{VERSION}.
+
+Bash contains features that appear in other popular shells, and some
+features that only appear in Bash. Some of the shells that Bash has
+borrowed concepts from are the Bourne Shell (@file{sh}), the Korn Shell
+(@file{ksh}), and the C-shell (@file{csh} and its successor,
+@file{tcsh}). The following menu breaks the features up into
+categories, noting which features were inspired by other shells and
+which are specific to Bash.
+
+This manual is meant as a brief introduction to features found in
+Bash. The Bash manual page should be used as the definitive
+reference on shell behavior.
+
+@menu
+* Introduction:: An introduction to the shell.
+* Definitions:: Some definitions used in the rest of this
+ manual.
+* Basic Shell Features:: The shell "building blocks".
+* Shell Builtin Commands:: Commands that are a part of the shell.
+* Shell Variables:: Variables used or set by Bash.
+* Bash Features:: Features found only in Bash.
+* Job Control:: What job control is and how Bash allows you
+ to use it.
+* Command Line Editing:: Chapter describing the command line
+ editing features.
+* Using History Interactively:: Command History Expansion
+* Installing Bash:: How to build and install Bash on your system.
+* Reporting Bugs:: How to report bugs in Bash.
+* Major Differences From The Bourne Shell:: A terse list of the differences
+ between Bash and historical
+ versions of /bin/sh.
+* GNU Free Documentation License:: Copying and sharing this documentation.
+* Indexes:: Various indexes for this manual.
+@end menu
+@end ifnottex
+
+@node Introduction
+@chapter Introduction
+@menu
+* What is Bash?:: A short description of Bash.
+* What is a shell?:: A brief introduction to shells.
+@end menu
+
+@node What is Bash?
+@section What is Bash?
+
+Bash is the shell, or command language interpreter,
+for the @sc{gnu} operating system.
+The name is an acronym for the @samp{Bourne-Again SHell},
+a pun on Stephen Bourne, the author of the direct ancestor of
+the current Unix shell @code{sh},
+which appeared in the Seventh Edition Bell Labs Research version
+of Unix.
+
+Bash is largely compatible with @code{sh} and incorporates useful
+features from the Korn shell @code{ksh} and the C shell @code{csh}.
+It is intended to be a conformant implementation of the @sc{ieee}
+@sc{posix} Shell and Tools portion of the @sc{ieee} @sc{posix}
+specification (@sc{ieee} Standard 1003.1).
+It offers functional improvements over @code{sh} for both interactive and
+programming use.
+
+While the @sc{gnu} operating system provides other shells, including
+a version of @code{csh}, Bash is the default shell.
+Like other @sc{gnu} software, Bash is quite portable. It currently runs
+on nearly every version of Unix and a few other operating systems @minus{}
+independently-supported ports exist for @sc{ms-dos}, @sc{os/2},
+and Windows platforms.
+
+@node What is a shell?
+@section What is a shell?
+
+At its base, a shell is simply a macro processor that executes
+commands. The term macro processor means functionality where text
+and symbols are expanded to create larger expressions.
+
+A Unix shell is both a command interpreter and a programming
+language. As a command interpreter, the shell provides the user
+interface to the rich set of @sc{gnu} utilities. The programming
+language features allow these utilities to be combined.
+Files containing commands can be created, and become
+commands themselves. These new commands have the same status as
+system commands in directories such as @file{/bin}, allowing users
+or groups to establish custom environments to automate their common
+tasks.
+
+Shells may be used interactively or non-interactively. In
+interactive mode, they accept input typed from the keyboard.
+When executing non-interactively, shells execute commands read
+from a file.
+
+A shell allows execution of @sc{gnu} commands, both synchronously and
+asynchronously.
+The shell waits for synchronous commands to complete before accepting
+more input; asynchronous commands continue to execute in parallel
+with the shell while it reads and executes additional commands.
+The @dfn{redirection} constructs permit
+fine-grained control of the input and output of those commands.
+Moreover, the shell allows control over the contents of commands'
+environments.
+
+Shells also provide a small set of built-in
+commands (@dfn{builtins}) implementing functionality impossible
+or inconvenient to obtain via separate utilities.
+For example, @code{cd}, @code{break}, @code{continue}, and
+@code{exec} cannot be implemented outside of the shell because
+they directly manipulate the shell itself.
+The @code{history}, @code{getopts}, @code{kill}, or @code{pwd}
+builtins, among others, could be implemented in separate utilities,
+but they are more convenient to use as builtin commands.
+All of the shell builtins are described in
+subsequent sections.
+
+While executing commands is essential, most of the power (and
+complexity) of shells is due to their embedded programming
+languages. Like any high-level language, the shell provides
+variables, flow control constructs, quoting, and functions.
+
+Shells offer features geared specifically for
+interactive use rather than to augment the programming language.
+These interactive features include job control, command line
+editing, command history and aliases. Each of these features is
+described in this manual.
+
+@node Definitions
+@chapter Definitions
+These definitions are used throughout the remainder of this manual.
+
+@table @code
+
+@item POSIX
+@cindex POSIX
+A family of open system standards based on Unix. Bash
+is primarily concerned with the Shell and Utilities portion of the
+@sc{posix} 1003.1 standard.
+
+@item blank
+A space or tab character.
+
+@item builtin
+@cindex builtin
+A command that is implemented internally by the shell itself, rather
+than by an executable program somewhere in the file system.
+
+@item control operator
+@cindex control operator
+A @code{token} that performs a control function. It is a @code{newline}
+or one of the following:
+@samp{||}, @samp{&&}, @samp{&}, @samp{;}, @samp{;;},
+@samp{|}, @samp{|&}, @samp{(}, or @samp{)}.
+
+@item exit status
+@cindex exit status
+The value returned by a command to its caller. The value is restricted
+to eight bits, so the maximum value is 255.
+
+@item field
+@cindex field
+A unit of text that is the result of one of the shell expansions. After
+expansion, when executing a command, the resulting fields are used as
+the command name and arguments.
+
+@item filename
+@cindex filename
+A string of characters used to identify a file.
+
+@item job
+@cindex job
+A set of processes comprising a pipeline, and any processes descended
+from it, that are all in the same process group.
+
+@item job control
+@cindex job control
+A mechanism by which users can selectively stop (suspend) and restart
+(resume) execution of processes.
+
+@item metacharacter
+@cindex metacharacter
+A character that, when unquoted, separates words. A metacharacter is
+a @code{blank} or one of the following characters:
+@samp{|}, @samp{&}, @samp{;}, @samp{(}, @samp{)}, @samp{<}, or
+@samp{>}.
+
+@item name
+@cindex name
+@cindex identifier
+A @code{word} consisting solely of letters, numbers, and underscores,
+and beginning with a letter or underscore. @code{Name}s are used as
+shell variable and function names.
+Also referred to as an @code{identifier}.
+
+@item operator
+@cindex operator, shell
+A @code{control operator} or a @code{redirection operator}.
+@xref{Redirections}, for a list of redirection operators.
+Operators contain at least one unquoted @code{metacharacter}.
+
+@item process group
+@cindex process group
+A collection of related processes each having the same process
+group @sc{id}.
+
+@item process group ID
+@cindex process group ID
+A unique identifier that represents a @code{process group}
+during its lifetime.
+
+@item reserved word
+@cindex reserved word
+A @code{word} that has a special meaning to the shell. Most reserved
+words introduce shell flow control constructs, such as @code{for} and
+@code{while}.
+
+@item return status
+@cindex return status
+A synonym for @code{exit status}.
+
+@item signal
+@cindex signal
+A mechanism by which a process may be notified by the kernel
+of an event occurring in the system.
+
+@item special builtin
+@cindex special builtin
+A shell builtin command that has been classified as special by the
+@sc{posix} standard.
+
+@item token
+@cindex token
+A sequence of characters considered a single unit by the shell.
+It is either a @code{word} or an @code{operator}.
+
+@item word
+@cindex word
+A sequence of characters treated as a unit by the shell.
+Words may not include unquoted @code{metacharacters}.
+@end table
+
+@node Basic Shell Features
+@chapter Basic Shell Features
+@cindex Bourne shell
+
+Bash is an acronym for @samp{Bourne-Again SHell}.
+The Bourne shell is
+the traditional Unix shell originally written by Stephen Bourne.
+All of the Bourne shell builtin commands are available in Bash,
+The rules for evaluation and quoting are taken from the @sc{posix}
+specification for the `standard' Unix shell.
+
+This chapter briefly summarizes the shell's `building blocks':
+commands, control structures, shell functions, shell @i{parameters},
+shell expansions,
+@i{redirections}, which are a way to direct input and output from
+and to named files, and how the shell executes commands.
+
+@menu
+* Shell Syntax:: What your input means to the shell.
+* Shell Commands:: The types of commands you can use.
+* Shell Functions:: Grouping commands by name.
+* Shell Parameters:: How the shell stores values.
+* Shell Expansions:: How Bash expands parameters and the various
+ expansions available.
+* Redirections:: A way to control where input and output go.
+* Executing Commands:: What happens when you run a command.
+* Shell Scripts:: Executing files of shell commands.
+@end menu
+
+@node Shell Syntax
+@section Shell Syntax
+@menu
+* Shell Operation:: The basic operation of the shell.
+* Quoting:: How to remove the special meaning from characters.
+* Comments:: How to specify comments.
+@end menu
+
+When the shell reads input, it proceeds through a
+sequence of operations. If the input indicates the beginning of a
+comment, the shell ignores the comment symbol (@samp{#}), and the rest
+of that line.
+
+Otherwise, roughly speaking, the shell reads its input and
+divides the input into words and operators, employing the quoting rules
+to select which meanings to assign various words and characters.
+
+The shell then parses these tokens into commands and other constructs,
+removes the special meaning of certain words or characters, expands
+others, redirects input and output as needed, executes the specified
+command, waits for the command's exit status, and makes that exit status
+available for further inspection or processing.
+
+@node Shell Operation
+@subsection Shell Operation
+
+The following is a brief description of the shell's operation when it
+reads and executes a command. Basically, the shell does the
+following:
+
+@enumerate
+@item
+Reads its input from a file (@pxref{Shell Scripts}), from a string
+supplied as an argument to the @option{-c} invocation option
+(@pxref{Invoking Bash}), or from the user's terminal.
+
+@item
+Breaks the input into words and operators, obeying the quoting rules
+described in @ref{Quoting}. These tokens are separated by
+@code{metacharacters}. Alias expansion is performed by this step
+(@pxref{Aliases}).
+
+@item
+Parses the tokens into simple and compound commands
+(@pxref{Shell Commands}).
+
+@item
+Performs the various shell expansions (@pxref{Shell Expansions}), breaking
+the expanded tokens into lists of filenames (@pxref{Filename Expansion})
+and commands and arguments.
+
+@item
+Performs any necessary redirections (@pxref{Redirections}) and removes
+the redirection operators and their operands from the argument list.
+
+@item
+Executes the command (@pxref{Executing Commands}).
+
+@item
+Optionally waits for the command to complete and collects its exit
+status (@pxref{Exit Status}).
+
+@end enumerate
+
+@node Quoting
+@subsection Quoting
+@cindex quoting
+@menu
+* Escape Character:: How to remove the special meaning from a single
+ character.
+* Single Quotes:: How to inhibit all interpretation of a sequence
+ of characters.
+* Double Quotes:: How to suppress most of the interpretation of a
+ sequence of characters.
+* ANSI-C Quoting:: How to expand ANSI-C sequences in quoted strings.
+* Locale Translation:: How to translate strings into different languages.
+@end menu
+
+Quoting 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.
+
+Each of the shell metacharacters (@pxref{Definitions})
+has special meaning to the shell and must be quoted if it is to
+represent itself.
+When the command history expansion facilities are being used
+(@pxref{History Interaction}), the
+@var{history expansion} character, usually @samp{!}, must be quoted
+to prevent history expansion. @xref{Bash History Facilities}, for
+more details concerning history expansion.
+
+There are three quoting mechanisms: the
+@var{escape character}, single quotes, and double quotes.
+
+@node Escape Character
+@subsubsection Escape Character
+A non-quoted backslash @samp{\} is the Bash escape character.
+It preserves the literal value of the next character that follows,
+with the exception of @code{newline}. If a @code{\newline} pair
+appears, and the backslash itself is not quoted, the @code{\newline}
+is treated as a line continuation (that is, it is removed from
+the input stream and effectively ignored).
+
+@node Single Quotes
+@subsubsection Single Quotes
+
+Enclosing characters in single quotes (@samp{'}) 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.
+
+@node Double Quotes
+@subsubsection Double Quotes
+
+Enclosing characters in double quotes (@samp{"}) preserves the literal value
+of all characters within the quotes, with the exception of
+@samp{$}, @samp{`}, @samp{\},
+and, when history expansion is enabled, @samp{!}.
+The characters @samp{$} and @samp{`}
+retain their special meaning within double quotes (@pxref{Shell Expansions}).
+The backslash retains its special meaning only when followed by one of
+the following characters:
+@samp{$}, @samp{`}, @samp{"}, @samp{\}, or @code{newline}.
+Within double quotes, backslashes that are followed by one of these
+characters are removed. Backslashes preceding characters without a
+special meaning are left unmodified.
+A double quote may be quoted within double quotes by preceding it with
+a backslash.
+If enabled, history expansion will be performed unless an @samp{!}
+appearing in double quotes is escaped using a backslash.
+The backslash preceding the @samp{!} is not removed.
+
+The special parameters @samp{*} and @samp{@@} have special meaning
+when in double quotes (@pxref{Shell Parameter Expansion}).
+
+@node ANSI-C Quoting
+@subsubsection ANSI-C Quoting
+@cindex quoting, ANSI
+
+Words of the form @code{$'@var{string}'} are treated specially. The
+word expands to @var{string}, with backslash-escaped characters replaced
+as specified by the ANSI C standard. Backslash escape sequences, if
+present, are decoded as follows:
+
+@table @code
+@item \a
+alert (bell)
+@item \b
+backspace
+@item \e
+@itemx \E
+an escape character (not ANSI C)
+@item \f
+form feed
+@item \n
+newline
+@item \r
+carriage return
+@item \t
+horizontal tab
+@item \v
+vertical tab
+@item \\
+backslash
+@item \'
+single quote
+@item \"
+double quote
+@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)
+@item \u@var{HHHH}
+the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value
+@var{HHHH} (one to four hex digits)
+@item \U@var{HHHHHHHH}
+the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value
+@var{HHHHHHHH} (one to eight hex digits)
+@item \c@var{x}
+a control-@var{x} character
+@end table
+
+@noindent
+The expanded result is single-quoted, as if the dollar sign had not
+been present.
+
+@node Locale Translation
+@subsubsection Locale-Specific Translation
+@cindex localization
+@cindex internationalization
+@cindex native languages
+@cindex translation, native languages
+
+A double-quoted string preceded by a dollar sign (@samp{$}) will cause
+the string to be translated according to the current locale.
+If the current locale is @code{C} or @code{POSIX}, the dollar sign
+is ignored.
+If the string is translated and replaced, the replacement is
+double-quoted.
+
+@vindex LC_MESSAGES
+@vindex TEXTDOMAIN
+@vindex TEXTDOMAINDIR
+Some systems use the message catalog selected by the @env{LC_MESSAGES}
+shell variable. Others create the name of the message catalog from the
+value of the @env{TEXTDOMAIN} shell variable, possibly adding a
+suffix of @samp{.mo}. If you use the @env{TEXTDOMAIN} variable, you
+may need to set the @env{TEXTDOMAINDIR} variable to the location of
+the message catalog files. Still others use both variables in this
+fashion:
+@env{TEXTDOMAINDIR}/@env{LC_MESSAGES}/LC_MESSAGES/@env{TEXTDOMAIN}.mo.
+
+@node Comments
+@subsection Comments
+@cindex comments, shell
+
+In a non-interactive shell, or an interactive shell in which the
+@code{interactive_comments} option to the @code{shopt}
+builtin is enabled (@pxref{The Shopt Builtin}),
+a word beginning with @samp{#}
+causes that word and all remaining characters on that line to
+be ignored. An interactive shell without the @code{interactive_comments}
+option enabled does not allow comments. The @code{interactive_comments}
+option is on by default in interactive shells.
+@xref{Interactive Shells}, for a description of what makes
+a shell interactive.
+
+@node Shell Commands
+@section Shell Commands
+@cindex commands, shell
+
+A simple shell command such as @code{echo a b c} consists of the command
+itself followed by arguments, separated by spaces.
+
+More complex shell commands are composed of simple commands arranged together
+in a variety of ways: in a pipeline in which the output of one command
+becomes the input of a second, in a loop or conditional construct, or in
+some other grouping.
+
+@menu
+* Simple Commands:: The most common type of command.
+* Pipelines:: Connecting the input and output of several
+ commands.
+* Lists:: How to execute commands sequentially.
+* Compound Commands:: Shell commands for control flow.
+* Coprocesses:: Two-way communication between commands.
+* GNU Parallel:: Running commands in parallel.
+@end menu
+
+@node Simple Commands
+@subsection Simple Commands
+@cindex commands, simple
+
+A simple command is the kind of command encountered most often.
+It's just a sequence of words separated by @code{blank}s, terminated
+by one of the shell's control operators (@pxref{Definitions}). The
+first word generally specifies a command to be executed, with the
+rest of the words being that command's arguments.
+
+The return status (@pxref{Exit Status}) of a simple command is
+its exit status as provided
+by the @sc{posix} 1003.1 @code{waitpid} function, or 128+@var{n} if
+the command was terminated by signal @var{n}.
+
+@node Pipelines
+@subsection Pipelines
+@cindex pipeline
+@cindex commands, pipelines
+
+A @code{pipeline} is a sequence of simple commands separated by one of
+the control operators @samp{|} or @samp{|&}.
+
+@rwindex time
+@rwindex !
+@cindex command timing
+The format for a pipeline is
+@example
+[time [-p]] [!] @var{command1} [ | or |& @var{command2} ] @dots{}
+@end example
+
+@noindent
+The output of each command in the pipeline is connected via a pipe
+to the input of the next command.
+That is, each command reads the previous command's output. This
+connection is performed before any redirections specified by the
+command.
+
+If @samp{|&} is used, @var{command1}'s standard output and standard error
+are connected to
+@var{command2}'s standard input through the pipe;
+it is shorthand for @code{2>&1 |}.
+This implicit redirection of the standard error is
+performed after any redirections specified by the command.
+
+The reserved word @code{time} causes timing statistics
+to be printed for the pipeline once it finishes.
+The statistics currently consist of elapsed (wall-clock) time and
+user and system time consumed by the command's execution.
+The @option{-p} option changes the output format to that specified
+by @sc{posix}.
+When the shell is in @sc{posix} mode (@pxref{Bash POSIX Mode}),
+it does not recognize @code{time} as a reserved word if the next
+token begins with a @samp{-}.
+The @env{TIMEFORMAT} variable may be set to a format string that
+specifies how the timing information should be displayed.
+@xref{Bash Variables}, for a description of the available formats.
+The use of @code{time} as a reserved word permits the timing of
+shell builtins, shell functions, and pipelines. An external
+@code{time} command cannot time these easily.
+
+When the shell is in @sc{posix} mode (@pxref{Bash POSIX Mode}), @code{time}
+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 @env{TIMEFORMAT} variable may be used to specify the format of
+the time information.
+
+If the pipeline is not executed asynchronously (@pxref{Lists}), the
+shell waits for all commands in the pipeline to complete.
+
+Each command in a pipeline is executed in its own subshell
+(@pxref{Command Execution Environment}). The exit
+status of a pipeline is the exit status of the last command in the
+pipeline, unless the @code{pipefail} option is enabled
+(@pxref{The Set Builtin}).
+If @code{pipefail} 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 @samp{!} precedes the pipeline, the
+exit status 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.
+
+@node Lists
+@subsection Lists of Commands
+@cindex commands, lists
+
+A @code{list} is a sequence of one or more pipelines separated by one
+of the operators @samp{;}, @samp{&}, @samp{&&}, or @samp{||},
+and optionally terminated by one of @samp{;}, @samp{&}, or a
+@code{newline}.
+
+Of these list operators, @samp{&&} and @samp{||}
+have equal precedence, followed by @samp{;} and @samp{&},
+which have equal precedence.
+
+A sequence of one or more newlines may appear in a @code{list}
+to delimit commands, equivalent to a semicolon.
+
+If a command is terminated by the control operator @samp{&},
+the shell executes the command asynchronously in a subshell.
+This is known as executing the command in the @var{background}.
+The shell does not wait for the command to finish, and the return
+status is 0 (true).
+When job control is not active (@pxref{Job Control}),
+the standard input for asynchronous commands, in the absence of any
+explicit redirections, is redirected from @code{/dev/null}.
+
+Commands separated by a @samp{;} 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.
+
+@sc{and} and @sc{or} lists are sequences of one or more pipelines
+separated by the control operators @samp{&&} and @samp{||},
+respectively. @sc{and} and @sc{or} lists are executed with left
+associativity.
+
+An @sc{and} list has the form
+@example
+@var{command1} && @var{command2}
+@end example
+
+@noindent
+@var{command2} is executed if, and only if, @var{command1}
+returns an exit status of zero.
+
+An @sc{or} list has the form
+@example
+@var{command1} || @var{command2}
+@end example
+
+@noindent
+@var{command2} is executed if, and only if, @var{command1}
+returns a non-zero exit status.
+
+The return status of
+@sc{and} and @sc{or} lists is the exit status of the last command
+executed in the list.
+
+@node Compound Commands
+@subsection Compound Commands
+@cindex commands, compound
+
+@menu
+* Looping Constructs:: Shell commands for iterative action.
+* Conditional Constructs:: Shell commands for conditional execution.
+* Command Grouping:: Ways to group commands.
+@end menu
+
+Compound commands are the shell programming constructs.
+Each construct begins with a reserved word or control operator and is
+terminated by a corresponding reserved word or operator.
+Any redirections (@pxref{Redirections}) associated with a compound command
+apply to all commands within that compound command unless explicitly overridden.
+
+In most cases a list of commands in a compound 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.
+
+Bash provides looping constructs, conditional commands, and mechanisms
+to group commands and execute them as a unit.
+
+@node Looping Constructs
+@subsubsection Looping Constructs
+@cindex commands, looping
+
+Bash supports the following looping constructs.
+
+Note that wherever a @samp{;} appears in the description of a
+command's syntax, it may be replaced with one or more newlines.
+
+@table @code
+@item until
+@rwindex until
+@rwindex do
+@rwindex done
+The syntax of the @code{until} command is:
+
+@example
+until @var{test-commands}; do @var{consequent-commands}; done
+@end example
+
+Execute @var{consequent-commands} as long as
+@var{test-commands} has an exit status which is not zero.
+The return status is the exit status of the last command executed
+in @var{consequent-commands}, or zero if none was executed.
+
+@item while
+@rwindex while
+The syntax of the @code{while} command is:
+
+@example
+while @var{test-commands}; do @var{consequent-commands}; done
+@end example
+
+Execute @var{consequent-commands} as long as
+@var{test-commands} has an exit status of zero.
+The return status is the exit status of the last command executed
+in @var{consequent-commands}, or zero if none was executed.
+
+@item for
+@rwindex for
+The syntax of the @code{for} command is:
+
+@example
+for @var{name} [ [in [@var{words} @dots{}] ] ; ] do @var{commands}; done
+@end example
+
+Expand @var{words}, and execute @var{commands} once for each member
+in the resultant list, with @var{name} bound to the current member.
+If @samp{in @var{words}} is not present, the @code{for} command
+executes the @var{commands} once for each positional parameter that is
+set, as if @samp{in "$@@"} had been specified
+(@pxref{Special Parameters}).
+The return status is the exit status of the last command that executes.
+If there are no items in the expansion of @var{words}, no commands are
+executed, and the return status is zero.
+
+An alternate form of the @code{for} command is also supported:
+
+@example
+for (( @var{expr1} ; @var{expr2} ; @var{expr3} )) ; do @var{commands} ; done
+@end example
+
+First, the arithmetic expression @var{expr1} is evaluated according
+to the rules described below (@pxref{Shell Arithmetic}).
+The arithmetic expression @var{expr2} is then evaluated repeatedly
+until it evaluates to zero.
+Each time @var{expr2} evaluates to a non-zero value, @var{commands} are
+executed and the arithmetic expression @var{expr3} 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 @var{commands}
+that is executed, or false if any of the expressions is invalid.
+@end table
+
+The @code{break} and @code{continue} builtins (@pxref{Bourne Shell Builtins})
+may be used to control loop execution.
+
+@node Conditional Constructs
+@subsubsection Conditional Constructs
+@cindex commands, conditional
+
+@table @code
+@item if
+@rwindex if
+@rwindex then
+@rwindex else
+@rwindex elif
+@rwindex fi
+The syntax of the @code{if} command is:
+
+@example
+if @var{test-commands}; then
+ @var{consequent-commands};
+[elif @var{more-test-commands}; then
+ @var{more-consequents};]
+[else @var{alternate-consequents};]
+fi
+@end example
+
+The @var{test-commands} list is executed, and if its return status is zero,
+the @var{consequent-commands} list is executed.
+If @var{test-commands} returns a non-zero status, each @code{elif} list
+is executed in turn, and if its exit status is zero,
+the corresponding @var{more-consequents} is executed and the
+command completes.
+If @samp{else @var{alternate-consequents}} is present, and
+the final command in the final @code{if} or @code{elif} clause
+has a non-zero exit status, then @var{alternate-consequents} is executed.
+The return status is the exit status of the last command executed, or
+zero if no condition tested true.
+
+@item case
+@rwindex case
+@rwindex in
+@rwindex esac
+The syntax of the @code{case} command is:
+
+@example
+case @var{word} in [ [(] @var{pattern} [| @var{pattern}]@dots{}) @var{command-list} ;;]@dots{} esac
+@end example
+
+@code{case} will selectively execute the @var{command-list} corresponding to
+the first @var{pattern} that matches @var{word}.
+If the shell option @code{nocasematch}
+(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.
+The @samp{|} is used to separate multiple patterns, and the @samp{)}
+operator terminates a pattern list.
+A list of patterns and an associated command-list is known
+as a @var{clause}.
+
+Each clause must be terminated with @samp{;;}, @samp{;&}, or @samp{;;&}.
+The @var{word} undergoes tilde expansion, parameter expansion, command
+substitution, arithmetic expansion, and quote removal before matching is
+attempted. Each @var{pattern} undergoes tilde expansion, parameter
+expansion, command substitution, and arithmetic expansion.
+
+There may be an arbitrary number of @code{case} clauses, each terminated
+by a @samp{;;}, @samp{;&}, or @samp{;;&}.
+The first pattern that matches determines the
+command-list that is executed.
+It's a common idiom to use @samp{*} as the final pattern to define the
+default case, since that pattern will always match.
+
+Here is an example using @code{case} in a script that could be used to
+describe one interesting feature of an animal:
+
+@example
+echo -n "Enter the name of an animal: "
+read ANIMAL
+echo -n "The $ANIMAL has "
+case $ANIMAL in
+ horse | dog | cat) echo -n "four";;
+ man | kangaroo ) echo -n "two";;
+ *) echo -n "an unknown number of";;
+esac
+echo " legs."
+@end example
+
+@noindent
+
+If the @samp{;;} operator is used, no subsequent matches are attempted after
+the first pattern match.
+Using @samp{;&} in place of @samp{;;} causes execution to continue with
+the @var{command-list} associated with the next clause, if any.
+Using @samp{;;&} in place of @samp{;;} causes the shell to test the patterns
+in the next clause, if any, and execute any associated @var{command-list}
+on a successful match.
+
+The return status is zero if no @var{pattern} is matched. Otherwise, the
+return status is the exit status of the @var{command-list} executed.
+
+@item select
+@rwindex select
+
+The @code{select} construct allows the easy generation of menus.
+It has almost the same syntax as the @code{for} command:
+
+@example
+select @var{name} [in @var{words} @dots{}]; do @var{commands}; done
+@end example
+
+The list of words following @code{in} is expanded, generating a list
+of items. The set of expanded words is printed on the standard
+error output stream, each preceded by a number. If the
+@samp{in @var{words}} is omitted, the positional parameters are printed,
+as if @samp{in "$@@"} had been specified.
+The @env{PS3} prompt is then displayed and a line is read from the
+standard input.
+If the line consists of a number corresponding to one of the displayed
+words, then the value of @var{name} is set to that word.
+If the line is empty, the words and prompt are displayed again.
+If @code{EOF} is read, the @code{select} command completes.
+Any other value read causes @var{name} to be set to null.
+The line read is saved in the variable @env{REPLY}.
+
+The @var{commands} are executed after each selection until a
+@code{break} command is executed, at which
+point the @code{select} command completes.
+
+Here is an example that allows the user to pick a filename from the
+current directory, and displays the name and index of the file
+selected.
+
+@example
+select fname in *;
+do
+ echo you picked $fname \($REPLY\)
+ break;
+done
+@end example
+
+@item ((@dots{}))
+@example
+(( @var{expression} ))
+@end example
+
+The arithmetic @var{expression} is evaluated according to the rules
+described below (@pxref{Shell Arithmetic}).
+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
+@example
+let "@var{expression}"
+@end example
+@noindent
+@xref{Bash Builtins}, for a full description of the @code{let} builtin.
+
+@item [[@dots{}]]
+@rwindex [[
+@rwindex ]]
+@example
+[[ @var{expression} ]]
+@end example
+
+Return a status of 0 or 1 depending on the evaluation of
+the conditional expression @var{expression}.
+Expressions are composed of the primaries described below in
+@ref{Bash Conditional Expressions}.
+Word splitting and filename expansion are not performed on the words
+between the @code{[[} and @code{]]}; tilde expansion, parameter and
+variable expansion, arithmetic expansion, command substitution, process
+substitution, and quote removal are performed.
+Conditional operators such as @samp{-f} must be unquoted to be recognized
+as primaries.
+
+When used with @code{[[}, the @samp{<} and @samp{>} operators sort
+lexicographically using the current locale.
+
+When the @samp{==} and @samp{!=} operators are used, the string to the
+right of the operator is considered a pattern and matched according
+to the rules described below in @ref{Pattern Matching}.
+The @samp{=} operator is identical to @samp{==}.
+If the shell option @code{nocasematch}
+(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.
+The return value is 0 if the string matches (@samp{==}) or does not
+match (@samp{!=})the pattern, and 1 otherwise.
+Any part of the pattern may be quoted to force the quoted portion
+to be matched as a string.
+
+An additional binary operator, @samp{=~}, is available, with the same
+precedence as @samp{==} and @samp{!=}.
+When it is used, the string to the right of the operator is considered
+an extended regular expression and matched accordingly (as in @i{regex}3)).
+The return value is 0 if the string matches
+the pattern, and 1 otherwise.
+If the regular expression is syntactically incorrect, the conditional
+expression's return value is 2.
+If the shell option @code{nocasematch}
+(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.
+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 @code{BASH_REMATCH}.
+The element of @code{BASH_REMATCH} with index 0 is the portion of the string
+matching the entire regular expression.
+The element of @code{BASH_REMATCH} with index @var{n} is the portion of the
+string matching the @var{n}th parenthesized subexpression.
+
+For example, the following will match a line
+(stored in the shell variable @var{line})
+if there is a sequence of characters in the value consisting of
+any number, including zero, of
+space characters, zero or one instances of @samp{a}, then a @samp{b}:
+@example
+[[ $line =~ [[:space:]]*(a)?b ]]
+@end example
+
+@noindent
+That means values like @samp{aab} and @samp{ aaaaaab} will match, as
+will a line containing a @samp{b} anywhere in its value.
+
+Storing the regular expression in a shell variable is often a useful
+way to avoid problems with quoting characters that are special to the
+shell.
+It is sometimes difficult to specify a regular expression literally
+without using quotes, or to keep track of the quoting used by regular
+expressions while paying attention to the shell's quote removal.
+Using a shell variable to store the pattern decreases these problems.
+For example, the following is equivalent to the above:
+@example
+pattern='[[:space:]]*(a)?b'
+[[ $line =~ $pattern ]]
+@end example
+
+@noindent
+If you want to match a character that's special to the regular expression
+grammar, it has to be quoted to remove its special meaning.
+This means that in the pattern @samp{xxx.txt}, the @samp{.} matches any
+character in the string (its usual regular expression meaning), but in the
+pattern @samp{"xxx.txt"} it can only match a literal @samp{.}.
+Shell programmers should take special care with backslashes, since backslashes
+are used both by the shell and regular expressions to remove the special
+meaning from the following character.
+The following two sets of commands are @emph{not} equivalent:
+@example
+pattern='\.'
+
+[[ . =~ $pattern ]]
+[[ . =~ \. ]]
+
+[[ . =~ "$pattern" ]]
+[[ . =~ '\.' ]]
+@end example
+
+@noindent
+The first two matches will succeed, but the second two will not, because
+in the second two the backslash will be part of the pattern to be matched.
+In the first two examples, the backslash removes the special meaning from
+@samp{.}, so the literal @samp{.} matches.
+If the string in the first examples were anything other than @samp{.}, say
+@samp{a}, the pattern would not match, because the quoted @samp{.} in the
+pattern loses its special meaning of matching any single character.
+
+Expressions may be combined using the following operators, listed
+in decreasing order of precedence:
+
+@table @code
+@item ( @var{expression} )
+Returns the value of @var{expression}.
+This may be used to override the normal precedence of operators.
+
+@item ! @var{expression}
+True if @var{expression} is false.
+
+@item @var{expression1} && @var{expression2}
+True if both @var{expression1} and @var{expression2} are true.
+
+@item @var{expression1} || @var{expression2}
+True if either @var{expression1} or @var{expression2} is true.
+@end table
+
+@noindent
+The @code{&&} and @code{||} operators do not evaluate @var{expression2} if the
+value of @var{expression1} is sufficient to determine the return
+value of the entire conditional expression.
+@end table
+
+@node Command Grouping
+@subsubsection Grouping Commands
+@cindex commands, grouping
+
+Bash provides two ways to group a list of commands to be executed
+as a unit. When commands are grouped, redirections may be applied
+to the entire command list. For example, the output of all the
+commands in the list may be redirected to a single stream.
+
+@table @code
+@item ()
+@example
+( @var{list} )
+@end example
+
+Placing a list of commands between parentheses causes a subshell
+environment to be created (@pxref{Command Execution Environment}), and each
+of the commands in @var{list} to be executed in that subshell. Since the
+@var{list} is executed in a subshell, variable assignments do not remain in
+effect after the subshell completes.
+
+@item @{@}
+@rwindex @{
+@rwindex @}
+@example
+@{ @var{list}; @}
+@end example
+
+Placing a list of commands between curly braces causes the list to
+be executed in the current shell context. No subshell is created.
+The semicolon (or newline) following @var{list} is required.
+@end table
+
+In addition to the creation of a subshell, there is a subtle difference
+between these two constructs due to historical reasons. The braces
+are @code{reserved words}, so they must be separated from the @var{list}
+by @code{blank}s or other shell metacharacters.
+The parentheses are @code{operators}, and are
+recognized as separate tokens by the shell even if they are not separated
+from the @var{list} by whitespace.
+
+The exit status of both of these constructs is the exit status of
+@var{list}.
+
+@node Coprocesses
+@subsection Coprocesses
+@cindex coprocess
+
+A @code{coprocess} is a shell command preceded by the @code{coproc}
+reserved word.
+A coprocess is executed asynchronously in a subshell, as if the command
+had been terminated with the @samp{&} control operator, with a two-way pipe
+established between the executing shell and the coprocess.
+
+The format for a coprocess is:
+@example
+coproc [@var{NAME}] @var{command} [@var{redirections}]
+@end example
+
+@noindent
+This creates a coprocess named @var{NAME}.
+If @var{NAME} is not supplied, the default name is @var{COPROC}.
+@var{NAME} must not be supplied if @var{command} is a simple
+command (@pxref{Simple Commands}); otherwise, it is interpreted as
+the first word of the simple command.
+
+When the coprocess is executed, the shell creates an array variable
+(@pxref{Arrays})
+named @env{NAME} in the context of the executing shell.
+The standard output of @var{command}
+is connected via a pipe to a file descriptor in the executing shell,
+and that file descriptor is assigned to @env{NAME}[0].
+The standard input of @var{command}
+is connected via a pipe to a file descriptor in the executing shell,
+and that file descriptor is assigned to @env{NAME}[1].
+This pipe is established before any redirections specified by the
+command (@pxref{Redirections}).
+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 @env{NAME}_PID.
+The @code{wait}
+builtin command may be used to wait for the coprocess to terminate.
+
+Since the coprocess is created as an asynchronous command,
+the @code{coproc} command always returns success.
+The return status of a coprocess is the exit status of @var{command}.
+
+@node GNU Parallel
+@subsection GNU Parallel
+
+There are ways to run commands in parallel that are not built into Bash.
+GNU Parallel is a tool to do just that.
+
+GNU Parallel, as its name suggests, can be used to build and run commands
+in parallel. You may run the same command with different arguments, whether
+they are filenames, usernames, hostnames, or lines read from files. GNU
+Parallel provides shorthand references to many of the most common operations
+(input lines, various portions of the input line, different ways to specify
+the input source, and so on). Parallel can replace @code{xargs} or feed
+commands from its input sources to several different instances of Bash.
+
+For a complete description, refer to the GNU Parallel documentation. A few
+examples should provide a brief introduction to its use.
+
+For example, it is easy to replace @code{xargs} to gzip all html files in the
+current directory and its subdirectories:
+@example
+find . -type f -name '*.html' -print | parallel gzip
+@end example
+@noindent
+If you need to protect special characters such as newlines in file names,
+use find's @option{-print0} option and parallel's @option{-0} option.
+
+You can use Parallel to move files from the current directory when the
+number of files is too large to process with one @code{mv} invocation:
+@example
+ls | parallel mv @{@} destdir
+@end example
+
+As you can see, the @{@} is replaced with each line read from standard input.
+While this will work in most instances, it is not sufficient to deal with all
+filenames. If you need to accommodate special characters in filenames, you
+can use
+
+@example
+find . -depth 1 \! -name '.*' -print0 | parallel -0 mv @{@} destdir
+@end example
+
+@noindent
+as alluded to above.
+
+This will run as many @code{mv} commands as there are files in the current
+directory.
+You can emulate a parallel @code{xargs} by adding the @option{-X} option:
+@example
+find . -depth 1 \! -name '.*' -print0 | parallel -0 -X mv @{@} destdir
+@end example
+
+GNU Parallel can replace certain common idioms that operate on lines read
+from a file (in this case, filenames listed one per line):
+@example
+ while read -r x; do
+ do-something1 "$x" "config-$x"
+ do-something2 < "$x"
+ done < file | process-output
+@end example
+
+@noindent
+with a more compact syntax reminiscent of lambdas:
+@example
+cat list | parallel "do-something1 @{@} config-@{@} ; do-something2 < @{@}" | process-output
+@end example
+
+Parallel provides a built-in mechanism to remove filename extensions, which
+lends itself to batch file transformations or renaming:
+@example
+ls *.gz | parallel -j+0 "zcat @{@} | bzip2 >@{.@}.bz2 && rm @{@}"
+@end example
+@noindent
+This will recompress all files in the current directory with names ending
+in .gz using bzip2, running one job per CPU (-j+0) in parallel.
+We use @code{ls} for brevity here; using @code{find} as above is more
+robust in the face of filenames containing unexpected characters.
+Parallel can take arguments from the command line; the above can also be
+written as
+
+@example
+parallel "zcat {} | bzip2 >{.}.bz2 && rm {}" ::: *.gz
+@end example
+
+If a command generates output, you may want to preserve the input order in
+the output. For instance, the following command
+@example
+@{ echo foss.org.my ; echo debian.org; echo freenetproject.org; @} | parallel traceroute
+@end example
+@noindent
+will display as output the traceroute invocation that finishes first.
+Adding the @option{-k} option
+@example
+@{ echo foss.org.my ; echo debian.org; echo freenetproject.org; @} | parallel -k traceroute
+@end example
+@noindent
+will ensure that the output of @code{traceroute foss.org.my} is displayed first.
+
+Finally, Parallel can be used to run a sequence of shell commands in parallel,
+similar to @samp{cat file | bash}.
+It is not uncommon to take a list of filenames, create a series of shell
+commands to operate on them, and feed that list of commnds to a shell.
+Parallel can speed this up. Assuming that @file{file} contains a list of
+shell commands, one per line,
+
+@example
+parallel -j 10 < file
+@end example
+
+@noindent
+will evaluate the commands using the shell (since no explicit command is
+supplied as an argument), in blocks of ten shell jobs at a time.
+
+@node Shell Functions
+@section Shell Functions
+@cindex shell function
+@cindex functions, shell
+
+Shell functions are a way to group commands for later execution
+using a single name for the group. They are executed just like
+a "regular" command.
+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.
+Shell functions are executed in the current
+shell context; no new process is created to interpret them.
+
+Functions are declared using this syntax:
+@rwindex function
+@example
+@var{name} () @var{compound-command} [ @var{redirections} ]
+@end example
+
+or
+
+@example
+function @var{name} [()] @var{compound-command} [ @var{redirections} ]
+@end example
+
+This defines a shell function named @var{name}. The reserved
+word @code{function} is optional.
+If the @code{function} reserved
+word is supplied, the parentheses are optional.
+The @var{body} of the function is the compound command
+@var{compound-command} (@pxref{Compound Commands}).
+That command is usually a @var{list} enclosed between @{ and @}, but
+may be any compound command listed above.
+@var{compound-command} is executed whenever @var{name} is specified as the
+name of a command.
+When the shell is in @sc{posix} mode (@pxref{Bash POSIX Mode}),
+@var{name} may not be the same as one of the special builtins
+(@pxref{Special Builtins}).
+Any redirections (@pxref{Redirections}) associated with the shell function
+are performed when the function is executed.
+
+A function definition may be deleted using the @option{-f} option to the
+@code{unset} builtin (@pxref{Bourne Shell Builtins}).
+
+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.
+
+Note that for historical reasons, in the most common usage the curly braces
+that surround the body of the function must be separated from the body by
+@code{blank}s or newlines.
+This is because the braces are reserved words and are only recognized
+as such when they are separated from the command list
+by whitespace or another shell metacharacter.
+Also, when using the braces, the @var{list} must be terminated by a semicolon,
+a @samp{&}, or a newline.
+
+When a function is executed, the arguments to the
+function become the positional parameters
+during its execution (@pxref{Positional Parameters}).
+The special parameter @samp{#} that expands to the number of
+positional parameters is updated to reflect the change.
+Special parameter @code{0} is unchanged.
+The first element of the @env{FUNCNAME} variable is set to the
+name of the function while the function is executing.
+
+All other aspects of the shell execution
+environment are identical between a function and its caller
+with these exceptions:
+the @env{DEBUG} and @env{RETURN} traps
+are not inherited unless the function has been given the
+@code{trace} attribute using the @code{declare} builtin or
+the @code{-o functrace} option has been enabled with
+the @code{set} builtin,
+(in which case all functions inherit the @env{DEBUG} and @env{RETURN} traps),
+and the @env{ERR} trap is not inherited unless the @code{-o errtrace}
+shell option has been enabled.
+@xref{Bourne Shell Builtins}, for the description of the
+@code{trap} builtin.
+
+The @env{FUNCNEST} 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.
+
+If the builtin command @code{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 @code{RETURN} trap is executed
+before execution resumes.
+When a function completes, the values of the
+positional parameters and the special parameter @samp{#}
+are restored to the values they had prior to the function's
+execution. If a numeric argument is given to @code{return},
+that is the function's return status; otherwise the function's
+return status is the exit status of the last command executed
+before the @code{return}.
+
+Variables local to the function may be declared with the
+@code{local} builtin. These variables are visible only to
+the function and the commands it invokes.
+
+Function names and definitions may be listed with the
+@option{-f} option to the @code{declare} (@code{typeset})
+builtin command (@pxref{Bash Builtins}).
+The @option{-F} option to @code{declare} or @code{typeset}
+will list the function names only
+(and optionally the source file and line number, if the @code{extdebug}
+shell option is enabled).
+Functions may be exported so that subshells
+automatically have them defined with the
+@option{-f} option to the @code{export} builtin
+(@pxref{Bourne Shell Builtins}).
+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.
+
+Functions may be recursive.
+The @code{FUNCNEST} 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 placed on the number of recursive calls.
+
+@node Shell Parameters
+@section Shell Parameters
+@cindex parameters
+@cindex variable, shell
+@cindex shell variable
+
+@menu
+* Positional Parameters:: The shell's command-line arguments.
+* Special Parameters:: Parameters denoted by special characters.
+@end menu
+
+A @var{parameter} is an entity that stores values.
+It can be a @code{name}, a number, or one of the special characters
+listed below.
+A @var{variable} is a parameter denoted by a @code{name}.
+A variable has a @var{value} and zero or more @var{attributes}.
+Attributes are assigned using the @code{declare} builtin command
+(see the description of the @code{declare} builtin in @ref{Bash Builtins}).
+
+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 @code{unset} builtin command.
+
+A variable may be assigned to by a statement of the form
+@example
+@var{name}=[@var{value}]
+@end example
+@noindent
+If @var{value}
+is not given, the variable is assigned the null string. All
+@var{value}s undergo tilde expansion, parameter and variable expansion,
+command substitution, arithmetic expansion, and quote
+removal (detailed below). If the variable has its @code{integer}
+attribute set, then @var{value}
+is evaluated as an arithmetic expression even if the @code{$((@dots{}))}
+expansion is not used (@pxref{Arithmetic Expansion}).
+Word splitting is not performed, with the exception
+of @code{"$@@"} as explained below.
+Filename expansion is not performed.
+Assignment statements may also appear as arguments to the
+@code{alias},
+@code{declare}, @code{typeset}, @code{export}, @code{readonly},
+and @code{local} builtin commands.
+When in @sc{posix} mode (@pxref{Bash POSIX Mode}), these builtins may appear
+in a command after one or more instances of the @code{command} builtin
+and retain these assignment statement properties.
+
+In the context where an assignment statement is assigning a value
+to a shell variable or array index (@pxref{Arrays}), the @samp{+=}
+operator can be used to
+append to or add to the variable's previous value.
+When @samp{+=} is applied to a variable for which the @var{integer} attribute
+has been set, @var{value} is evaluated as an arithmetic expression and
+added to the variable's current value, which is also evaluated.
+When @samp{+=} is applied to an array variable using compound assignment
+(@pxref{Arrays}), the
+variable's value is not unset (as it is when using @samp{=}), 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, @var{value} is expanded and
+appended to the variable's value.
+
+A variable can be assigned the @var{nameref} attribute using the
+@option{-n} option to the \fBdeclare\fP or \fBlocal\fP builtin commands
+(@pxref{Bash Builtins})
+to create a @var{nameref}, or a reference to another variable.
+This allows variables to be manipulated indirectly.
+Whenever the nameref variable is referenced or assigned to, 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
+@example
+declare -n ref=$1
+@end example
+@noindent
+inside the function creates a nameref variable @var{ref} whose value is
+the variable name passed as the first argument.
+References and assignments to @var{ref} are treated as references and
+assignments to the variable whose name was passed as @code{$1}.
+
+If the control variable in a @code{for} loop has the nameref attribute,
+the list of words can be a list of shell variables, and a name reference
+will be established for each word in the list, in turn, when the loop is
+executed.
+Array variables cannot be given the @option{-n} attribute.
+However, nameref variables can reference array variables and subscripted
+array variables.
+Namerefs can be unset using the @option{-n} option to the @code{unset} builtin
+(@pxref{Bourne Shell Builtins}).
+Otherwise, if @code{unset} is executed with the name of a nameref variable
+as an argument, the variable referenced by the nameref variable will be unset.
+
+@node Positional Parameters
+@subsection Positional Parameters
+@cindex parameters, positional
+
+A @var{positional parameter} is a parameter denoted by one or more
+digits, other than the single digit @code{0}. Positional parameters are
+assigned from the shell's arguments when it is invoked,
+and may be reassigned using the @code{set} builtin command.
+Positional parameter @code{N} may be referenced as @code{$@{N@}}, or
+as @code{$N} when @code{N} consists of a single digit.
+Positional parameters may not be assigned to with assignment statements.
+The @code{set} and @code{shift} builtins are used to set and
+unset them (@pxref{Shell Builtin Commands}).
+The positional parameters are
+temporarily replaced when a shell function is executed
+(@pxref{Shell Functions}).
+
+When a positional parameter consisting of more than a single
+digit is expanded, it must be enclosed in braces.
+
+@node Special Parameters
+@subsection Special Parameters
+@cindex parameters, special
+
+The shell treats several parameters specially. These parameters may
+only be referenced; assignment to them is not allowed.
+
+@vtable @code
+
+@item *
+Expands to the positional parameters, starting from one. When the
+expansion occurs within double quotes, it expands to a single word
+with the value of each parameter separated by the first character
+of the @env{IFS}
+special variable. That is, @code{"$*"} is equivalent
+to @code{"$1@var{c}$2@var{c}@dots{}"}, where @var{c}
+is the first character of the value of the @code{IFS}
+variable.
+If @env{IFS} is unset, the parameters are separated by spaces.
+If @env{IFS} is null, the parameters are joined without intervening
+separators.
+
+
+@item @@
+Expands to the positional parameters, starting from one. When the
+expansion occurs within double quotes, each parameter expands to a
+separate word. That is, @code{"$@@"} is equivalent to
+@code{"$1" "$2" @dots{}}.
+If the double-quoted expansion occurs within a word, the expansion of
+the first parameter is joined with the beginning part of the original
+word, and the expansion of the last parameter is joined with the last
+part of the original word.
+When there are no positional parameters, @code{"$@@"} and
+@code{$@@}
+expand to nothing (i.e., they are removed).
+
+@item #
+Expands to the number of positional parameters in decimal.
+
+@item ?
+Expands to the exit status of the most recently executed foreground
+pipeline.
+
+@item -
+(A hyphen.) Expands to the current option flags as specified upon
+invocation, by the @code{set}
+builtin command, or those set by the shell itself
+(such as the @option{-i} option).
+
+@item $
+Expands to the process @sc{id} of the shell. In a @code{()} subshell, it
+expands to the process @sc{id} of the invoking shell, not the subshell.
+
+@item !
+Expands to the process @sc{id} of the most recently executed background
+(asynchronous) command.
+
+@item 0
+Expands to the name of the shell or shell script. This is set at
+shell initialization. If Bash is invoked with a file of commands
+(@pxref{Shell Scripts}), @code{$0} is set to the name of that file.
+If Bash is started with the @option{-c} option (@pxref{Invoking Bash}),
+then @code{$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 Bash, as given by argument zero.
+
+@item _
+(An underscore.)
+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.
+@end vtable
+
+@node Shell Expansions
+@section Shell Expansions
+@cindex expansion
+
+Expansion is performed on the command line after it has been split into
+@code{token}s. There are seven kinds of expansion performed:
+
+@itemize @bullet
+@item brace expansion
+@item tilde expansion
+@item parameter and variable expansion
+@item command substitution
+@item arithmetic expansion
+@item word splitting
+@item filename expansion
+@end itemize
+
+@menu
+* Brace Expansion:: Expansion of expressions within braces.
+* Tilde Expansion:: Expansion of the ~ character.
+* Shell Parameter Expansion:: How Bash expands variables to their values.
+* Command Substitution:: Using the output of a command as an argument.
+* Arithmetic Expansion:: How to use arithmetic in shell expansions.
+* Process Substitution:: A way to write and read to and from a
+ command.
+* Word Splitting:: How the results of expansion are split into separate
+ arguments.
+* Filename Expansion:: A shorthand for specifying filenames matching patterns.
+* Quote Removal:: How and when quote characters are removed from
+ words.
+@end menu
+
+The order of expansions is: brace expansion, tilde expansion,
+parameter, variable, and arithmetic expansion and
+command substitution
+(done in a left-to-right fashion), word splitting, and filename
+expansion.
+
+On systems that can support it, there is an additional expansion
+available: @var{process substitution}. This is performed at the
+same time as parameter, variable, and arithmetic expansion and
+command substitution.
+
+Only brace expansion, word splitting, and filename 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
+@code{"$@@"} (@pxref{Special Parameters}) and @code{"$@{@var{name}[@@]@}"}
+(@pxref{Arrays}).
+
+After all expansions, @code{quote removal} (@pxref{Quote Removal})
+is performed.
+
+@node Brace Expansion
+@subsection Brace Expansion
+@cindex brace expansion
+@cindex expansion, brace
+
+Brace expansion is a mechanism by which arbitrary strings may be generated.
+This mechanism is similar to
+@var{filename expansion} (@pxref{Filename Expansion}),
+but the filenames generated need not exist.
+Patterns to be brace expanded take the form of an optional @var{preamble},
+followed by either a series of comma-separated strings or a sequence expression
+between a pair of braces,
+followed by an optional @var{postscript}.
+The preamble is prefixed to each string contained within the braces, and
+the postscript is then appended to each resulting string, expanding left
+to right.
+
+Brace expansions may be nested.
+The results of each expanded string are not sorted; left to right order
+is preserved.
+For example,
+@example
+bash$ echo a@{d,c,b@}e
+ade ace abe
+@end example
+
+A sequence expression takes the form @code{@{@var{x}..@var{y}[..@var{incr}]@}},
+where @var{x} and @var{y} are either integers or single characters,
+and @var{incr}, an optional increment, is an integer.
+When integers are supplied, the expression expands to each number between
+@var{x} and @var{y}, inclusive.
+Supplied integers may be prefixed with @samp{0} to force each term to have the
+same width.
+When either @var{x} or @var{y} 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 @var{x} and @var{y}, inclusive,
+using the default C locale.
+Note that both @var{x} and @var{y} 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.
+
+Brace expansion is performed before any other expansions,
+and any characters special to other expansions are preserved
+in the result. It is strictly textual. Bash
+does not apply any syntactic interpretation to the context of the
+expansion or the text between the braces.
+To avoid conflicts with parameter expansion, the string @samp{$@{}
+is not considered eligible for brace expansion.
+
+A correctly-formed brace expansion must contain unquoted opening
+and closing braces, and at least one unquoted comma or a valid
+sequence expression.
+Any incorrectly formed brace expansion is left unchanged.
+
+A @{ or @samp{,} may be quoted with a backslash to prevent its
+being considered part of a brace expression.
+To avoid conflicts with parameter expansion, the string @samp{$@{}
+is not considered eligible for brace expansion.
+
+This construct is typically used as shorthand when the common
+prefix of the strings to be generated is longer than in the
+above example:
+@example
+mkdir /usr/local/src/bash/@{old,new,dist,bugs@}
+@end example
+or
+@example
+chown root /usr/@{ucb/@{ex,edit@},lib/@{ex?.?*,how_ex@}@}
+@end example
+
+@node Tilde Expansion
+@subsection Tilde Expansion
+@cindex tilde expansion
+@cindex expansion, tilde
+
+If a word begins with an unquoted tilde character (@samp{~}), all of the
+characters up to the first unquoted slash (or all characters,
+if there is no unquoted slash) are considered a @var{tilde-prefix}.
+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 @var{login name}.
+If this login name is the null string, the tilde is replaced with the
+value of the @env{HOME} shell variable.
+If @env{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.
+
+If the tilde-prefix is @samp{~+}, the value of
+the shell variable @env{PWD} replaces the tilde-prefix.
+If the tilde-prefix is @samp{~-}, the value of the shell variable
+@env{OLDPWD}, if it is set, is substituted.
+
+If the characters following the tilde in the tilde-prefix consist of a
+number @var{N}, optionally prefixed by a @samp{+} or a @samp{-},
+the tilde-prefix is replaced with the
+corresponding element from the directory stack, as it would be displayed
+by the @code{dirs} builtin invoked with the characters following tilde
+in the tilde-prefix as an argument (@pxref{The Directory Stack}).
+If the tilde-prefix, sans the tilde, consists of a number without a
+leading @samp{+} or @samp{-}, @samp{+} is assumed.
+
+If the login name is invalid, or the tilde expansion fails, the word is
+left unchanged.
+
+Each variable assignment is checked for unquoted tilde-prefixes immediately
+following a @samp{:} or the first @samp{=}.
+In these cases, tilde expansion is also performed.
+Consequently, one may use filenames with tildes in assignments to
+@env{PATH}, @env{MAILPATH}, and @env{CDPATH},
+and the shell assigns the expanded value.
+
+The following table shows how Bash treats unquoted tilde-prefixes:
+
+@table @code
+@item ~
+The value of @code{$HOME}
+@item ~/foo
+@file{$HOME/foo}
+
+@item ~fred/foo
+The subdirectory @code{foo} of the home directory of the user
+@code{fred}
+
+@item ~+/foo
+@file{$PWD/foo}
+
+@item ~-/foo
+@file{$@{OLDPWD-'~-'@}/foo}
+
+@item ~@var{N}
+The string that would be displayed by @samp{dirs +@var{N}}
+
+@item ~+@var{N}
+The string that would be displayed by @samp{dirs +@var{N}}
+
+@item ~-@var{N}
+The string that would be displayed by @samp{dirs -@var{N}}
+@end table
+
+@node Shell Parameter Expansion
+@subsection Shell Parameter Expansion
+@cindex parameter expansion
+@cindex expansion, parameter
+
+The @samp{$} 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.
+
+When braces are used, the matching ending brace is the first @samp{@}}
+not escaped by a backslash or within a quoted string, and not within an
+embedded arithmetic expansion, command substitution, or parameter
+expansion.
+
+The basic form of parameter expansion is $@{@var{parameter}@}.
+The value of @var{parameter} is substituted.
+The @var{parameter} is a shell parameter as described above
+(@pxref{Shell Parameters}) or an array reference (@pxref{Arrays}).
+The braces are required when @var{parameter}
+is a positional parameter with more than one digit,
+or when @var{parameter} is followed by a character that is not to be
+interpreted as part of its name.
+
+If the first character of @var{parameter} is an exclamation point (!),
+it introduces a level of variable indirection.
+Bash uses the value of the variable formed from the rest of
+@var{parameter} 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 @var{parameter} itself.
+This is known as @code{indirect expansion}.
+The exceptions to this are the expansions of $@{!@var{prefix}*@}
+and $@{!@var{name}[@@]@}
+described below.
+The exclamation point must immediately follow the left brace in order to
+introduce indirection.
+
+In each of the cases below, @var{word} is subject to tilde expansion,
+parameter expansion, command substitution, and arithmetic expansion.
+
+When not performing substring expansion, using the form described
+below (e.g., @samp{:-}), Bash tests for a parameter that is unset or null.
+Omitting the colon results in a test only for a parameter that is unset.
+Put another way, if the colon is included,
+the operator tests for both @var{parameter}'s existence and that its value
+is not null; if the colon is omitted, the operator tests only for existence.
+
+@table @code
+
+@item $@{@var{parameter}:@minus{}@var{word}@}
+If @var{parameter} is unset or null, the expansion of
+@var{word} is substituted. Otherwise, the value of
+@var{parameter} is substituted.
+
+@item $@{@var{parameter}:=@var{word}@}
+If @var{parameter}
+is unset or null, the expansion of @var{word}
+is assigned to @var{parameter}.
+The value of @var{parameter} is then substituted.
+Positional parameters and special parameters may not be assigned to
+in this way.
+
+@item $@{@var{parameter}:?@var{word}@}
+If @var{parameter}
+is null or unset, the expansion of @var{word} (or a message
+to that effect if @var{word}
+is not present) is written to the standard error and the shell, if it
+is not interactive, exits. Otherwise, the value of @var{parameter} is
+substituted.
+
+@item $@{@var{parameter}:+@var{word}@}
+If @var{parameter}
+is null or unset, nothing is substituted, otherwise the expansion of
+@var{word} is substituted.
+
+@item $@{@var{parameter}:@var{offset}@}
+@itemx $@{@var{parameter}:@var{offset}:@var{length}@}
+This is referred to as Substring Expansion.
+It expands to up to @var{length} characters of the value of @var{parameter}
+starting at the character specified by @var{offset}.
+If @var{parameter} is @samp{@@}, an indexed array subscripted by
+@samp{@@} or @samp{*}, or an associative array name, the results differ as
+described below.
+If @var{length} is omitted, it expands to the substring of the value of
+@var{parameter} starting at the character specified by @var{offset}
+and extending to the end of the value.
+@var{length} and @var{offset} are arithmetic expressions
+(@pxref{Shell Arithmetic}).
+
+If @var{offset} evaluates to a number less than zero, the value
+is used as an offset in characters
+from the end of the value of @var{parameter}.
+If @var{length} evaluates to a number less than zero,
+it is interpreted as an offset in characters
+from the end of the value of @var{parameter} rather than
+a number of characters, and the expansion is the characters between
+@var{offset} and that result.
+Note that a negative offset must be separated from the colon by at least
+one space to avoid being confused with the @samp{:-} expansion.
+
+Here are some examples illustrating substring expansion on parameters and
+subscripted arrays:
+
+@verbatim
+$ string=01234567890abcdefgh
+$ echo ${string:7}
+7890abcdefgh
+$ echo ${string:7:0}
+
+$ echo ${string:7:2}
+78
+$ echo ${string:7:-2}
+7890abcdef
+$ echo ${string: -7}
+bcdefgh
+$ echo ${string: -7:0}
+
+$ echo ${string: -7:2}
+bc
+$ echo ${string: -7:-2}
+bcdef
+$ set -- 01234567890abcdefgh
+$ echo ${1:7}
+7890abcdefgh
+$ echo ${1:7:0}
+
+$ echo ${1:7:2}
+78
+$ echo ${1:7:-2}
+7890abcdef
+$ echo ${1: -7}
+bcdefgh
+$ echo ${1: -7:0}
+
+$ echo ${1: -7:2}
+bc
+$ echo ${1: -7:-2}
+bcdef
+$ array[0]=01234567890abcdefgh
+$ echo ${array[0]:7}
+7890abcdefgh
+$ echo ${array[0]:7:0}
+
+$ echo ${array[0]:7:2}
+78
+$ echo ${array[0]:7:-2}
+7890abcdef
+$ echo ${array[0]: -7}
+bcdefgh
+$ echo ${array[0]: -7:0}
+
+$ echo ${array[0]: -7:2}
+bc
+$ echo ${array[0]: -7:-2}
+bcdef
+@end verbatim
+
+If @var{parameter} is @samp{@@}, the result is @var{length} positional
+parameters beginning at @var{offset}.
+A negative @var{offset} is taken relative to one greater than the greatest
+positional parameter, so an offset of -1 evaluates to the last positional
+parameter.
+It is an expansion error if @var{length} evaluates to a number less than zero.
+
+The following examples illustrate substring expansion using positional
+parameters:
+
+@verbatim
+$ set -- 1 2 3 4 5 6 7 8 9 0 a b c d e f g h
+$ echo ${@:7}
+7 8 9 0 a b c d e f g h
+$ echo ${@:7:0}
+
+$ echo ${@:7:2}
+7 8
+$ echo ${@:7:-2}
+bash: -2: substring expression < 0
+$ echo ${@: -7:2}
+b c
+$ echo ${@:0}
+./bash 1 2 3 4 5 6 7 8 9 0 a b c d e f g h
+$ echo ${@:0:2}
+./bash 1
+$ echo ${@: -7:0}
+
+@end verbatim
+
+If @var{parameter} is an indexed array name subscripted
+by @samp{@@} or @samp{*}, the result is the @var{length}
+members of the array beginning with @code{$@{@var{parameter}[@var{offset}]@}}.
+A negative @var{offset} is taken relative to one greater than the maximum
+index of the specified array.
+It is an expansion error if @var{length} evaluates to a number less than zero.
+
+These examples show how you can use substring expansion with indexed
+arrays:
+
+@verbatim
+$ array=(0 1 2 3 4 5 6 7 8 9 0 a b c d e f g h)
+$ echo ${array[@]:7}
+7 8 9 0 a b c d e f g h
+$ echo ${array[@]:7:2}
+7 8
+$ echo ${array[@]: -7:2}
+b c
+$ echo ${array[@]: -7:-2}
+bash: -2: substring expression < 0
+$ echo ${array[@]:0}
+0 1 2 3 4 5 6 7 8 9 0 a b c d e f g h
+$ echo ${array[@]:0:2}
+0 1
+$ echo ${array[@]: -7:0}
+
+@end verbatim
+
+Substring expansion applied to an associative array produces undefined
+results.
+
+Substring indexing is zero-based unless the positional parameters
+are used, in which case the indexing starts at 1 by default.
+If @var{offset} is 0, and the positional parameters are used, @code{$@@} is
+prefixed to the list.
+
+@item $@{!@var{prefix}*@}
+@itemx $@{!@var{prefix}@@@}
+Expands to the names of variables whose names begin with @var{prefix},
+separated by the first character of the @env{IFS} special variable.
+When @samp{@@} is used and the expansion appears within double quotes, each
+variable name expands to a separate word.
+
+@item $@{!@var{name}[@@]@}
+@itemx $@{!@var{name}[*]@}
+If @var{name} is an array variable, expands to the list of array indices
+(keys) assigned in @var{name}.
+If @var{name} is not an array, expands to 0 if @var{name} is set and null
+otherwise.
+When @samp{@@} is used and the expansion appears within double quotes, each
+key expands to a separate word.
+
+@item $@{#@var{parameter}@}
+The length in characters of the expanded value of @var{parameter} is
+substituted.
+If @var{parameter} is @samp{*} or @samp{@@}, the value substituted
+is the number of positional parameters.
+If @var{parameter} is an array name subscripted by @samp{*} or @samp{@@},
+the value substituted is the number of elements in the array.
+If @var{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
+@var{parameter}, so negative indices count back from the end of the
+array, and an index of -1 references the last element.
+
+@item $@{@var{parameter}#@var{word}@}
+@itemx $@{@var{parameter}##@var{word}@}
+The @var{word}
+is expanded to produce a pattern just as in filename
+expansion (@pxref{Filename Expansion}). If the pattern matches
+the beginning of the expanded value of @var{parameter},
+then the result of the expansion is the expanded value of @var{parameter}
+with the shortest matching pattern (the @samp{#} case) or the
+longest matching pattern (the @samp{##} case) deleted.
+If @var{parameter} is @samp{@@} or @samp{*},
+the pattern removal operation is applied to each positional
+parameter in turn, and the expansion is the resultant list.
+If @var{parameter} is an array variable subscripted with
+@samp{@@} or @samp{*},
+the pattern removal operation is applied to each member of the
+array in turn, and the expansion is the resultant list.
+
+@item $@{@var{parameter}%@var{word}@}
+@itemx $@{@var{parameter}%%@var{word}@}
+The @var{word} is expanded to produce a pattern just as in
+filename expansion.
+If the pattern matches a trailing portion of the expanded value of
+@var{parameter}, then the result of the expansion is the value of
+@var{parameter} with the shortest matching pattern (the @samp{%} case)
+or the longest matching pattern (the @samp{%%} case) deleted.
+If @var{parameter} is @samp{@@} or @samp{*},
+the pattern removal operation is applied to each positional
+parameter in turn, and the expansion is the resultant list.
+If @var{parameter}
+is an array variable subscripted with @samp{@@} or @samp{*},
+the pattern removal operation is applied to each member of the
+array in turn, and the expansion is the resultant list.
+
+@item $@{@var{parameter}/@var{pattern}/@var{string}@}
+
+The @var{pattern} is expanded to produce a pattern just as in
+filename expansion.
+@var{Parameter} is expanded and the longest match of @var{pattern}
+against its value is replaced with @var{string}.
+If @var{pattern} begins with @samp{/}, all matches of @var{pattern} are
+replaced with @var{string}. Normally only the first match is replaced.
+If @var{pattern} begins with @samp{#}, it must match at the beginning
+of the expanded value of @var{parameter}.
+If @var{pattern} begins with @samp{%}, it must match at the end
+of the expanded value of @var{parameter}.
+If @var{string} is null, matches of @var{pattern} are deleted
+and the @code{/} following @var{pattern} may be omitted.
+If @var{parameter} is @samp{@@} or @samp{*},
+the substitution operation is applied to each positional
+parameter in turn, and the expansion is the resultant list.
+If @var{parameter}
+is an array variable subscripted with @samp{@@} or @samp{*},
+the substitution operation is applied to each member of the
+array in turn, and the expansion is the resultant list.
+
+@item $@{@var{parameter}^@var{pattern}@}
+@itemx $@{@var{parameter}^^@var{pattern}@}
+@itemx $@{@var{parameter},@var{pattern}@}
+@itemx $@{@var{parameter},,@var{pattern}@}
+This expansion modifies the case of alphabetic characters in @var{parameter}.
+The @var{pattern} is expanded to produce a pattern just as in
+filename expansion.
+Each character in the expanded value of @var{parameter} is tested against
+@var{pattern}, and, if it matches the pattern, its case is converted.
+The pattern should not attempt to match more than one character.
+The @samp{^} operator converts lowercase letters matching @var{pattern}
+to uppercase; the @samp{,} operator converts matching uppercase letters
+to lowercase.
+The @samp{^^} and @samp{,,} expansions convert each matched character in the
+expanded value; the @samp{^} and @samp{,} expansions match and convert only
+the first character in the expanded value.
+If @var{pattern} is omitted, it is treated like a @samp{?}, which matches
+every character.
+If @var{parameter} is @samp{@@} or @samp{*},
+the case modification operation is applied to each positional
+parameter in turn, and the expansion is the resultant list.
+If @var{parameter}
+is an array variable subscripted with @samp{@@} or @samp{*},
+the case modification operation is applied to each member of the
+array in turn, and the expansion is the resultant list.
+@end table
+
+@node Command Substitution
+@subsection Command Substitution
+@cindex command substitution
+
+Command substitution allows the output of a command to replace
+the command itself.
+Command substitution occurs when a command is enclosed as follows:
+@example
+$(@var{command})
+@end example
+@noindent
+or
+@example
+`@var{command}`
+@end example
+
+@noindent
+Bash performs the expansion by executing @var{command} 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 @code{$(cat @var{file})} can be
+replaced by the equivalent but faster @code{$(< @var{file})}.
+
+When the old-style backquote form of substitution is used,
+backslash retains its literal meaning except when followed by
+@samp{$}, @samp{`}, or @samp{\}.
+The first backquote not preceded by a backslash terminates the
+command substitution.
+When using the @code{$(@var{command})} form, all characters between
+the parentheses make up the command; none are treated specially.
+
+Command substitutions may be nested. To nest when using the backquoted
+form, escape the inner backquotes with backslashes.
+
+If the substitution appears within double quotes, word splitting and
+filename expansion are not performed on the results.
+
+@node Arithmetic Expansion
+@subsection Arithmetic Expansion
+@cindex expansion, arithmetic
+@cindex arithmetic expansion
+
+Arithmetic expansion allows the evaluation of an arithmetic expression
+and the substitution of the result. The format for arithmetic expansion is:
+
+@example
+$(( @var{expression} ))
+@end example
+
+The expression is treated as if it were within double quotes, but
+a double quote inside the parentheses is not treated specially.
+All tokens in the expression undergo parameter expansion, command
+substitution, and quote removal.
+Arithmetic expansions may be nested.
+
+The evaluation is performed according to the rules listed below
+(@pxref{Shell Arithmetic}).
+If the expression is invalid, Bash prints a message indicating
+failure to the standard error and no substitution occurs.
+
+@node Process Substitution
+@subsection Process Substitution
+@cindex process substitution
+
+Process substitution is supported on systems that support named
+pipes (@sc{fifo}s) or the @file{/dev/fd} method of naming open files.
+It takes the form of
+@example
+<(@var{list})
+@end example
+@noindent
+or
+@example
+>(@var{list})
+@end example
+@noindent
+The process @var{list} is run with its input or output connected to a
+@sc{fifo} or some file in @file{/dev/fd}. The name of this file is
+passed as an argument to the current command as the result of the
+expansion. If the @code{>(@var{list})} form is used, writing to
+the file will provide input for @var{list}. If the
+@code{<(@var{list})} form is used, the file passed as an
+argument should be read to obtain the output of @var{list}.
+Note that no space may appear between the @code{<} or @code{>}
+and the left parenthesis, otherwise the construct would be interpreted
+as a redirection.
+
+When available, process substitution is performed simultaneously with
+parameter and variable expansion, command substitution, and arithmetic
+expansion.
+
+@node Word Splitting
+@subsection Word Splitting
+@cindex word splitting
+
+The shell scans the results of parameter expansion, command substitution,
+and arithmetic expansion that did not occur within double quotes for
+word splitting.
+
+The shell treats each character of @env{$IFS} as a delimiter, and splits
+the results of the other expansions into words on these characters.
+If @env{IFS} is unset, or its value is exactly @code{<space><tab><newline>},
+the default, then sequences of
+@code{ <space>}, @code{<tab>}, and @code{<newline>}
+at the beginning and end of the results of the previous
+expansions are ignored, and any sequence of @env{IFS}
+characters not at the beginning or end serves to delimit words.
+If @env{IFS} has a value other than the default, then sequences of
+the whitespace characters @code{space} and @code{tab}
+are ignored at the beginning and end of the
+word, as long as the whitespace character is in the
+value of @env{IFS} (an @env{IFS} whitespace character).
+Any character in @env{IFS} that is not @env{IFS}
+whitespace, along with any adjacent @env{IFS}
+whitespace characters, delimits a field. A sequence of @env{IFS}
+whitespace characters is also treated as a delimiter.
+If the value of @env{IFS} is null, no word splitting occurs.
+
+Explicit null arguments (@code{""} or @code{''}) 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.
+
+Note that if no expansion occurs, no splitting
+is performed.
+
+@node Filename Expansion
+@subsection Filename Expansion
+@menu
+* Pattern Matching:: How the shell matches patterns.
+@end menu
+@cindex expansion, filename
+@cindex expansion, pathname
+@cindex filename expansion
+@cindex pathname expansion
+
+After word splitting, unless the @option{-f} option has been set
+(@pxref{The Set Builtin}), Bash scans each word for the characters
+@samp{*}, @samp{?}, and @samp{[}.
+If one of these characters appears, then the word is
+regarded as a @var{pattern},
+and replaced with an alphabetically sorted list of
+filenames matching the pattern (@pxref{Pattern Matching}).
+If no matching filenames are found,
+and the shell option @code{nullglob} is disabled, the word is left
+unchanged.
+If the @code{nullglob} option is set, and no matches are found, the word
+is removed.
+If the @code{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 @code{nocaseglob} is enabled, the match is performed
+without regard to the case of alphabetic characters.
+
+When a pattern is used for filename expansion, the character @samp{.}
+at the start of a filename or immediately following a slash
+must be matched explicitly, unless the shell option @code{dotglob} is set.
+When matching a filename, the slash character must always be
+matched explicitly.
+In other cases, the @samp{.} character is not treated specially.
+
+See the description of @code{shopt} in @ref{The Shopt Builtin},
+for a description of the @code{nocaseglob}, @code{nullglob},
+@code{failglob}, and @code{dotglob} options.
+
+The @env{GLOBIGNORE}
+shell variable may be used to restrict the set of filenames matching a
+pattern. If @env{GLOBIGNORE}
+is set, each matching filename that also matches one of the patterns in
+@env{GLOBIGNORE} is removed from the list of matches. The filenames
+@file{.} and @file{..}
+are always ignored when @env{GLOBIGNORE}
+is set and not null.
+However, setting @env{GLOBIGNORE} to a non-null value has the effect of
+enabling the @code{dotglob}
+shell option, so all other filenames beginning with a
+@samp{.} will match.
+To get the old behavior of ignoring filenames beginning with a
+@samp{.}, make @samp{.*} one of the patterns in @env{GLOBIGNORE}.
+The @code{dotglob} option is disabled when @env{GLOBIGNORE}
+is unset.
+
+@node Pattern Matching
+@subsubsection Pattern Matching
+@cindex pattern matching
+@cindex matching, pattern
+
+Any character that appears in a pattern, other than the special pattern
+characters described below, matches itself.
+The @sc{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.
+
+The special pattern characters have the following meanings:
+@table @code
+@item *
+Matches any string, including the null string.
+When the @code{globstar} shell option is enabled, and @samp{*} is used in
+a filename expansion context, two adjacent @samp{*}s used as a single
+pattern will match all files and zero or more directories and
+subdirectories.
+If followed by a @samp{/}, two adjacent @samp{*}s will match only
+directories and subdirectories.
+@item ?
+Matches any single character.
+@item [@dots{}]
+Matches any one of the enclosed characters. A pair of characters
+separated by a hyphen denotes a @var{range expression};
+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
+@samp{[} is a @samp{!} or a @samp{^}
+then any character not enclosed is matched. A @samp{@minus{}}
+may be matched by including it as the first or last character
+in the set. A @samp{]} may be matched by including it as the first
+character in the set.
+The sorting order of characters in range expressions is determined by
+the current locale and the values of the
+@env{LC_COLLATE} and @env{LC_ALL} shell variables, if set.
+
+For example, in the default C locale, @samp{[a-dx-z]} is equivalent to
+@samp{[abcdxyz]}. Many locales sort characters in dictionary order, and in
+these locales @samp{[a-dx-z]} is typically not equivalent to @samp{[abcdxyz]};
+it might be equivalent to @samp{[aBbCcDdxXyYz]}, for example. To obtain
+the traditional interpretation of ranges in bracket expressions, you can
+force the use of the C locale by setting the @env{LC_COLLATE} or
+@env{LC_ALL} environment variable to the value @samp{C}, or enable the
+@code{globasciiranges} shell option.
+
+Within @samp{[} and @samp{]}, @var{character classes} can be specified
+using the syntax
+@code{[:}@var{class}@code{:]}, where @var{class} is one of the
+following classes defined in the @sc{posix} standard:
+@example
+alnum alpha ascii blank cntrl digit graph lower
+print punct space upper word xdigit
+@end example
+@noindent
+A character class matches any character belonging to that class.
+The @code{word} character class matches letters, digits, and the character
+@samp{_}.
+
+Within @samp{[} and @samp{]}, an @var{equivalence class} can be
+specified using the syntax @code{[=}@var{c}@code{=]}, which
+matches all characters with the same collation weight (as defined
+by the current locale) as the character @var{c}.
+
+Within @samp{[} and @samp{]}, the syntax @code{[.}@var{symbol}@code{.]}
+matches the collating symbol @var{symbol}.
+@end table
+
+If the @code{extglob} shell option is enabled using the @code{shopt}
+builtin, several extended pattern matching operators are recognized.
+In the following description, a @var{pattern-list} is a list of one
+or more patterns separated by a @samp{|}.
+Composite patterns may be formed using one or more of the following
+sub-patterns:
+
+@table @code
+@item ?(@var{pattern-list})
+Matches zero or one occurrence of the given patterns.
+
+@item *(@var{pattern-list})
+Matches zero or more occurrences of the given patterns.
+
+@item +(@var{pattern-list})
+Matches one or more occurrences of the given patterns.
+
+@item @@(@var{pattern-list})
+Matches one of the given patterns.
+
+@item !(@var{pattern-list})
+Matches anything except one of the given patterns.
+@end table
+
+@node Quote Removal
+@subsection Quote Removal
+
+After the preceding expansions, all unquoted occurrences of the
+characters @samp{\}, @samp{'}, and @samp{"} that did not
+result from one of the above expansions are removed.
+
+@node Redirections
+@section Redirections
+@cindex redirection
+
+Before a command is executed, its input and output
+may be @var{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
+simple command or may follow a command.
+Redirections are processed in the order they appear, from
+left to right.
+
+Each redirection that may be preceded by a file descriptor number
+may instead be preceded by a word of the form @{@var{varname}@}.
+In this case, for each redirection operator except
+>&- and <&-, the shell will allocate a file descriptor greater
+than 10 and assign it to @{@var{varname}@}. If >&- or <&- is preceded
+by @{@var{varname}@}, the value of @var{varname} defines the file
+descriptor to close.
+
+In the following descriptions, if the file descriptor number is
+omitted, and the first character of the redirection operator is
+@samp{<}, the redirection refers to the standard input (file
+descriptor 0). If the first character of the redirection operator
+is @samp{>}, the redirection refers to the standard output (file
+descriptor 1).
+
+The word following the redirection operator in the following
+descriptions, unless otherwise noted, is subjected to brace expansion,
+tilde expansion, parameter expansion, command substitution, arithmetic
+expansion, quote removal, filename expansion, and word splitting.
+If it expands to more than one word, Bash reports an error.
+
+Note that the order of redirections is significant. For example,
+the command
+@example
+ls > @var{dirlist} 2>&1
+@end example
+@noindent
+directs both standard output (file descriptor 1) and standard error
+(file descriptor 2) to the file @var{dirlist}, while the command
+@example
+ls 2>&1 > @var{dirlist}
+@end example
+@noindent
+directs only the standard output to file @var{dirlist},
+because the standard error was made a copy of the standard output
+before the standard output was redirected to @var{dirlist}.
+
+Bash handles several filenames specially when they are used in
+redirections, as described in the following table:
+
+@table @code
+@item /dev/fd/@var{fd}
+If @var{fd} is a valid integer, file descriptor @var{fd} is duplicated.
+
+@item /dev/stdin
+File descriptor 0 is duplicated.
+
+@item /dev/stdout
+File descriptor 1 is duplicated.
+
+@item /dev/stderr
+File descriptor 2 is duplicated.
+
+@item /dev/tcp/@var{host}/@var{port}
+If @var{host} is a valid hostname or Internet address, and @var{port}
+is an integer port number or service name, Bash attempts to open
+the corresponding TCP socket.
+
+@item /dev/udp/@var{host}/@var{port}
+If @var{host} is a valid hostname or Internet address, and @var{port}
+is an integer port number or service name, Bash attempts to open
+the corresponding UDP socket.
+@end table
+
+A failure to open or create a file causes the redirection to fail.
+
+Redirections using file descriptors greater than 9 should be used with
+care, as they may conflict with file descriptors the shell uses
+internally.
+
+@subsection Redirecting Input
+Redirection of input causes the file whose name results from
+the expansion of @var{word}
+to be opened for reading on file descriptor @code{n},
+or the standard input (file descriptor 0) if @code{n}
+is not specified.
+
+The general format for redirecting input is:
+@example
+[@var{n}]<@var{word}
+@end example
+
+@subsection Redirecting Output
+Redirection of output causes the file whose name results from
+the expansion of @var{word}
+to be opened for writing on file descriptor @var{n},
+or the standard output (file descriptor 1) if @var{n}
+is not specified. If the file does not exist it is created;
+if it does exist it is truncated to zero size.
+
+The general format for redirecting output is:
+@example
+[@var{n}]>[|]@var{word}
+@end example
+
+If the redirection operator is @samp{>}, and the @code{noclobber}
+option to the @code{set} builtin has been enabled, the redirection
+will fail if the file whose name results from the expansion of
+@var{word} exists and is a regular file.
+If the redirection operator is @samp{>|}, or the redirection operator is
+@samp{>} and the @code{noclobber} option is not enabled, the redirection
+is attempted even if the file named by @var{word} exists.
+
+@subsection Appending Redirected Output
+Redirection of output in this fashion
+causes the file whose name results from
+the expansion of @var{word}
+to be opened for appending on file descriptor @var{n},
+or the standard output (file descriptor 1) if @var{n}
+is not specified. If the file does not exist it is created.
+
+The general format for appending output is:
+@example
+[@var{n}]>>@var{word}
+@end example
+
+@subsection Redirecting Standard Output and Standard Error
+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 @var{word}.
+
+There are two formats for redirecting standard output and
+standard error:
+@example
+&>@var{word}
+@end example
+@noindent
+and
+@example
+>&@var{word}
+@end example
+@noindent
+Of the two forms, the first is preferred.
+This is semantically equivalent to
+@example
+>@var{word} 2>&1
+@end example
+When using the second form, @var{word} may not expand to a number or
+@samp{-}. If it does, other redirection operators apply
+(see Duplicating File Descriptors below) for compatibility reasons.
+
+@subsection Appending Standard Output and Standard Error
+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 @var{word}.
+
+The format for appending standard output and standard error is:
+@example
+&>>@var{word}
+@end example
+@noindent
+This is semantically equivalent to
+@example
+>>@var{word} 2>&1
+@end example
+(see Duplicating File Descriptors below).
+
+@subsection Here Documents
+This type of redirection instructs the shell to read input from the
+current source until a line containing only @var{word}
+(with no trailing blanks) is seen. All of
+the lines read up to that point are then used as the standard
+input for a command.
+
+The format of here-documents is:
+@example
+<<[@minus{}]@var{word}
+ @var{here-document}
+@var{delimiter}
+@end example
+
+No parameter and variable expansion, command substitution,
+arithmetic expansion, or filename expansion is performed on
+@var{word}. If any characters in @var{word} are quoted, the
+@var{delimiter} is the result of quote removal on @var{word},
+and the lines in the here-document are not expanded.
+If @var{word} is unquoted,
+all lines of the here-document are subjected to
+parameter expansion, command substitution, and arithmetic expansion,
+the character sequence @code{\newline} is ignored, and @samp{\}
+must be used to quote the characters
+@samp{\}, @samp{$}, and @samp{`}.
+
+If the redirection operator is @samp{<<-},
+then all leading tab characters are stripped from input lines and the
+line containing @var{delimiter}.
+This allows here-documents within shell scripts to be indented in a
+natural fashion.
+
+@subsection Here Strings
+A variant of here documents, the format is:
+@example
+<<< @var{word}
+@end example
+
+The @var{word} 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.
+
+@subsection Duplicating File Descriptors
+The redirection operator
+@example
+[@var{n}]<&@var{word}
+@end example
+@noindent
+is used to duplicate input file descriptors.
+If @var{word}
+expands to one or more digits, the file descriptor denoted by @var{n}
+is made to be a copy of that file descriptor.
+If the digits in @var{word} do not specify a file descriptor open for
+input, a redirection error occurs.
+If @var{word}
+evaluates to @samp{-}, file descriptor @var{n} is closed.
+If @var{n} is not specified, the standard input (file descriptor 0) is used.
+
+The operator
+@example
+[@var{n}]>&@var{word}
+@end example
+@noindent
+is used similarly to duplicate output file descriptors. If
+@var{n} is not specified, the standard output (file descriptor 1) is used.
+If the digits in @var{word} do not specify a file descriptor open for
+output, a redirection error occurs.
+If @var{word}
+evaluates to @samp{-}, file descriptor @var{n} is closed.
+As a special case, if @var{n} is omitted, and @var{word} does not
+expand to one or more digits or @samp{-}, the standard output and standard
+error are redirected as described previously.
+
+@subsection Moving File Descriptors
+The redirection operator
+@example
+[@var{n}]<&@var{digit}-
+@end example
+@noindent
+moves the file descriptor @var{digit} to file descriptor @var{n},
+or the standard input (file descriptor 0) if @var{n} is not specified.
+@var{digit} is closed after being duplicated to @var{n}.
+
+Similarly, the redirection operator
+@example
+[@var{n}]>&@var{digit}-
+@end example
+@noindent
+moves the file descriptor @var{digit} to file descriptor @var{n},
+or the standard output (file descriptor 1) if @var{n} is not specified.
+
+@subsection Opening File Descriptors for Reading and Writing
+The redirection operator
+@example
+[@var{n}]<>@var{word}
+@end example
+@noindent
+causes the file whose name is the expansion of @var{word}
+to be opened for both reading and writing on file descriptor
+@var{n}, or on file descriptor 0 if @var{n}
+is not specified. If the file does not exist, it is created.
+
+@node Executing Commands
+@section Executing Commands
+
+@menu
+* Simple Command Expansion:: How Bash expands simple commands before
+ executing them.
+* Command Search and Execution:: How Bash finds commands and runs them.
+* Command Execution Environment:: The environment in which Bash
+ executes commands that are not
+ shell builtins.
+* Environment:: The environment given to a command.
+* Exit Status:: The status returned by commands and how Bash
+ interprets it.
+* Signals:: What happens when Bash or a command it runs
+ receives a signal.
+@end menu
+
+@node Simple Command Expansion
+@subsection Simple Command Expansion
+@cindex command expansion
+
+When a simple command is executed, the shell performs the following
+expansions, assignments, and redirections, from left to right.
+
+@enumerate
+@item
+The words that the parser has marked as variable assignments (those
+preceding the command name) and redirections are saved for later
+processing.
+
+@item
+The words that are not variable assignments or redirections are
+expanded (@pxref{Shell Expansions}).
+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.
+
+@item
+Redirections are performed as described above (@pxref{Redirections}).
+
+@item
+The text after the @samp{=} in each variable assignment undergoes tilde
+expansion, parameter expansion, command substitution, arithmetic expansion,
+and quote removal before being assigned to the variable.
+@end enumerate
+
+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.
+
+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.
+
+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.
+
+@node Command Search and Execution
+@subsection Command Search and Execution
+@cindex command execution
+@cindex command search
+
+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.
+
+@enumerate
+@item
+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 in @ref{Shell Functions}.
+
+@item
+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.
+
+@item
+If the name is neither a shell function nor a builtin,
+and contains no slashes, Bash searches each element of
+@env{$PATH} for a directory containing an executable file
+by that name. Bash uses a hash table to remember the full
+pathnames of executable files to avoid multiple @env{PATH} searches
+(see the description of @code{hash} in @ref{Bourne Shell Builtins}).
+A full search of the directories in @env{$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 @code{command_not_found_handle}.
+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.
+
+@item
+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 supplied, if any.
+
+@item
+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
+@var{shell script} and the shell executes it as described in
+@ref{Shell Scripts}.
+
+@item
+If the command was not begun asynchronously, the shell waits for
+the command to complete and collects its exit status.
+
+@end enumerate
+
+@node Command Execution Environment
+@subsection Command Execution Environment
+@cindex execution environment
+
+The shell has an @var{execution environment}, which consists of the
+following:
+
+@itemize @bullet
+@item
+open files inherited by the shell at invocation, as modified by
+redirections supplied to the @code{exec} builtin
+
+@item
+the current working directory as set by @code{cd}, @code{pushd}, or
+@code{popd}, or inherited by the shell at invocation
+
+@item
+the file creation mode mask as set by @code{umask} or inherited from
+the shell's parent
+
+@item
+current traps set by @code{trap}
+
+@item
+shell parameters that are set by variable assignment or with @code{set}
+or inherited from the shell's parent in the environment
+
+@item
+shell functions defined during execution or inherited from the shell's
+parent in the environment
+
+@item
+options enabled at invocation (either by default or with command-line
+arguments) or by @code{set}
+
+@item
+options enabled by @code{shopt} (@pxref{The Shopt Builtin})
+
+@item
+shell aliases defined with @code{alias} (@pxref{Aliases})
+
+@item
+various process @sc{id}s, including those of background jobs
+(@pxref{Lists}), the value of @code{$$}, and the value of
+@env{$PPID}
+
+@end itemize
+
+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.
+
+@itemize @bullet
+@item
+the shell's open files, plus any modifications and additions specified
+by redirections to the command
+
+@item
+the current working directory
+
+@item
+the file creation mode mask
+
+@item
+shell variables and functions marked for export, along with variables
+exported for the command, passed in the environment (@pxref{Environment})
+
+@item
+traps caught by the shell are reset to the values inherited from the
+shell's parent, and traps ignored by the shell are ignored
+
+@end itemize
+
+A command invoked in this separate environment cannot affect the
+shell's execution environment.
+
+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.
+
+Subshells spawned to execute command substitutions inherit the value of
+the @option{-e} option from the parent shell. When not in @sc{posix} mode,
+Bash clears the @option{-e} option in such subshells.
+
+If a command is followed by a @samp{&} and job control is not active, the
+default standard input for the command is the empty file @file{/dev/null}.
+Otherwise, the invoked command inherits the file descriptors of the calling
+shell as modified by redirections.
+
+@node Environment
+@subsection Environment
+@cindex environment
+
+When a program is invoked it is given an array of strings
+called the @var{environment}.
+This is a list of name-value pairs, of the form @code{name=value}.
+
+Bash 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 @var{export}
+to child processes. Executed commands inherit the environment.
+The @code{export} and @samp{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 @code{unset} and @samp{export -n}
+commands, plus any additions via the @code{export} and
+@samp{declare -x} commands.
+
+The environment for any simple command
+or function may be augmented temporarily by prefixing it with
+parameter assignments, as described in @ref{Shell Parameters}.
+These assignment statements affect only the environment seen
+by that command.
+
+If the @option{-k} option is set (@pxref{The Set Builtin}), then all
+parameter assignments are placed in the environment for a command,
+not just those that precede the command name.
+
+When Bash invokes an external command, the variable @samp{$_}
+is set to the full pathname of the command and passed to that
+command in its environment.
+
+@node Exit Status
+@subsection Exit Status
+@cindex exit status
+
+The exit status of an executed command is the value returned by the
+@var{waitpid} 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.
+
+For the shell's purposes, a command which exits with a
+zero exit status has succeeded.
+A non-zero exit status indicates failure.
+This seemingly counter-intuitive scheme is used so there
+is one well-defined way to indicate success and a variety of
+ways to indicate various failure modes.
+When a command terminates on a fatal signal whose number is @var{N},
+Bash uses the value 128+@var{N} as the exit status.
+
+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.
+
+If a command fails because of an error during expansion or redirection,
+the exit status is greater than zero.
+
+The exit status is used by the Bash conditional commands
+(@pxref{Conditional Constructs}) and some of the list
+constructs (@pxref{Lists}).
+
+All of the Bash builtins return an exit status of zero if they succeed
+and a non-zero status on failure, so they may be used by the
+conditional and list constructs.
+All builtins return an exit status of 2 to indicate incorrect usage.
+
+@node Signals
+@subsection Signals
+@cindex signal handling
+
+When Bash is interactive, in the absence of any traps, it ignores
+@code{SIGTERM} (so that @samp{kill 0} does not kill an interactive shell),
+and @code{SIGINT}
+is caught and handled (so that the @code{wait} builtin is interruptible).
+When Bash receives a @code{SIGINT}, it breaks out of any executing loops.
+In all cases, Bash ignores @code{SIGQUIT}.
+If job control is in effect (@pxref{Job Control}), Bash
+ignores @code{SIGTTIN}, @code{SIGTTOU}, and @code{SIGTSTP}.
+
+Non-builtin commands started by Bash have signal handlers set to the
+values inherited by the shell from its parent.
+When job control is not in effect, asynchronous commands
+ignore @code{SIGINT} and @code{SIGQUIT} in addition to these inherited
+handlers.
+Commands run as a result of
+command substitution ignore the keyboard-generated job control signals
+@code{SIGTTIN}, @code{SIGTTOU}, and @code{SIGTSTP}.
+
+The shell exits by default upon receipt of a @code{SIGHUP}.
+Before exiting, an interactive shell resends the @code{SIGHUP} to
+all jobs, running or stopped.
+Stopped jobs are sent @code{SIGCONT} to ensure that they receive
+the @code{SIGHUP}.
+To prevent the shell from sending the @code{SIGHUP} signal to a
+particular job, it should be removed
+from the jobs table with the @code{disown}
+builtin (@pxref{Job Control Builtins}) or marked
+to not receive @code{SIGHUP} using @code{disown -h}.
+
+If the @code{huponexit} shell option has been set with @code{shopt}
+(@pxref{The Shopt Builtin}), Bash sends a @code{SIGHUP} to all jobs when
+an interactive login shell exits.
+
+If Bash 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 Bash is waiting for an asynchronous
+command via the @code{wait} builtin, the reception of a signal for
+which a trap has been set will cause the @code{wait} builtin to return
+immediately with an exit status greater than 128, immediately after
+which the trap is executed.
+
+@node Shell Scripts
+@section Shell Scripts
+@cindex shell script
+
+A shell script is a text file containing shell commands. When such
+a file is used as the first non-option argument when invoking Bash,
+and neither the @option{-c} nor @option{-s} option is supplied
+(@pxref{Invoking Bash}),
+Bash reads and executes commands from the file, then exits. This
+mode of operation creates a non-interactive shell. The shell first
+searches for the file in the current directory, and looks in the
+directories in @env{$PATH} if not found there.
+
+When Bash runs
+a shell script, it sets the special parameter @code{0} to the name
+of the file, rather than the name of the shell, and the positional
+parameters are set to the remaining arguments, if any are given.
+If no additional arguments are supplied, the positional parameters
+are unset.
+
+A shell script may be made executable by using the @code{chmod} command
+to turn on the execute bit. When Bash finds such a file while
+searching the @env{$PATH} for a command, it spawns a subshell to
+execute it. In other words, executing
+@example
+filename @var{arguments}
+@end example
+@noindent
+is equivalent to executing
+@example
+bash filename @var{arguments}
+@end example
+
+@noindent
+if @code{filename} is an executable shell script.
+This subshell reinitializes itself, so that the effect is as if a
+new shell had been invoked to interpret the script, with the
+exception that the locations of commands remembered by the parent
+(see the description of @code{hash} in @ref{Bourne Shell Builtins})
+are retained by the child.
+
+Most versions of Unix make this a part of the operating system's command
+execution mechanism. If the first line of a script begins with
+the two characters @samp{#!}, the remainder of the line specifies
+an interpreter for the program.
+Thus, you can specify Bash, @code{awk}, Perl, or some other
+interpreter and write the rest of the script file in that language.
+
+The arguments to the interpreter
+consist of a single optional argument following the interpreter
+name on the first line of the script file, followed by the name of
+the script file, followed by the rest of the arguments. Bash
+will perform this action on operating systems that do not handle it
+themselves. Note that some older versions of Unix limit the interpreter
+name and argument to a maximum of 32 characters.
+
+Bash scripts often begin with @code{#! /bin/bash} (assuming that
+Bash has been installed in @file{/bin}), since this ensures that
+Bash will be used to interpret the script, even if it is executed
+under another shell.
+
+@node Shell Builtin Commands
+@chapter Shell Builtin Commands
+
+@menu
+* Bourne Shell Builtins:: Builtin commands inherited from the Bourne
+ Shell.
+* Bash Builtins:: Table of builtins specific to Bash.
+* Modifying Shell Behavior:: Builtins to modify shell attributes and
+ optional behavior.
+* Special Builtins:: Builtin commands classified specially by
+ POSIX.
+@end menu
+
+Builtin commands are contained within the shell itself.
+When the name of a builtin command is used as the first word of
+a simple command (@pxref{Simple Commands}), the shell executes
+the command directly, without invoking another program.
+Builtin commands are necessary to implement functionality impossible
+or inconvenient to obtain with separate utilities.
+
+This section briefly describes the builtins which Bash inherits from
+the Bourne Shell, as well as the builtin commands which are unique
+to or have been extended in Bash.
+
+Several builtin commands are described in other chapters: builtin
+commands which provide the Bash interface to the job control
+facilities (@pxref{Job Control Builtins}), the directory stack
+(@pxref{Directory Stack Builtins}), the command history
+(@pxref{Bash History Builtins}), and the programmable completion
+facilities (@pxref{Programmable Completion Builtins}).
+
+Many of the builtins have been extended by @sc{posix} or Bash.
+
+Unless otherwise noted, each builtin command documented as accepting
+options preceded by @samp{-} accepts @samp{--}
+to signify the end of the options.
+The @code{:}, @code{true}, @code{false}, and @code{test}
+builtins do not accept options and do not treat @samp{--} specially.
+The @code{exit}, @code{logout}, @code{break}, @code{continue}, @code{let},
+and @code{shift} builtins accept and process arguments beginning
+with @samp{-} without requiring @samp{--}.
+Other builtins that accept arguments but are not specified as accepting
+options interpret arguments beginning with @samp{-} as invalid options and
+require @samp{--} to prevent this interpretation.
+
+@node Bourne Shell Builtins
+@section Bourne Shell Builtins
+
+The following shell builtin commands are inherited from the Bourne Shell.
+These commands are implemented as specified by the @sc{posix} standard.
+
+@table @code
+@item : @r{(a colon)}
+@btindex :
+@example
+: [@var{arguments}]
+@end example
+
+Do nothing beyond expanding @var{arguments} and performing redirections.
+The return status is zero.
+
+@item . @r{(a period)}
+@btindex .
+@example
+. @var{filename} [@var{arguments}]
+@end example
+
+Read and execute commands from the @var{filename} argument in the
+current shell context. If @var{filename} does not contain a slash,
+the @env{PATH} variable is used to find @var{filename}.
+When Bash is not in @sc{posix} mode, the current directory is searched
+if @var{filename} is not found in @env{$PATH}.
+If any @var{arguments} are supplied, they become the positional
+parameters when @var{filename} is executed. Otherwise the positional
+parameters are unchanged.
+The return status is the exit status of the last command executed, or
+zero if no commands are executed. If @var{filename} is not found, or
+cannot be read, the return status is non-zero.
+This builtin is equivalent to @code{source}.
+
+@item break
+@btindex break
+@example
+break [@var{n}]
+@end example
+
+Exit from a @code{for}, @code{while}, @code{until}, or @code{select} loop.
+If @var{n} is supplied, the @var{n}th enclosing loop is exited.
+@var{n} must be greater than or equal to 1.
+The return status is zero unless @var{n} is not greater than or equal to 1.
+
+@item cd
+@btindex cd
+@example
+cd [-L|[-P [-e]]] [@var{directory}]
+@end example
+
+Change the current working directory to @var{directory}.
+If @var{directory} is not supplied, the value of the @env{HOME}
+shell variable is used.
+Any additional arguments following @var{directory} are ignored.
+If the shell variable
+@env{CDPATH} exists, it is used as a search path:
+each directory name in @env{CDPATH} is searched for
+@var{directory}, with alternative directory names in @env{CDPATH}
+separated by a colon (@samp{:}).
+If @var{directory} begins with a slash, @env{CDPATH} is not used.
+
+The @option{-P} option means to not follow symbolic links: symbolic links
+are resolved while @code{cd} is traversing @var{directory} and before
+processing an instance of @samp{..} in @var{directory}.
+
+By default, or when the @option{-L} option is supplied, symbolic links
+in @var{directory} are resolved after @code{cd} processes an instance
+of @samp{..} in @var{directory}.
+
+If @samp{..} appears in @var{directory}, it is processed by removing the
+immediately preceding pathname component, back to a slash or the beginning
+of @var{directory}.
+
+If the @option{-e} option is supplied with @option{-P}
+and the current working directory cannot be successfully determined
+after a successful directory change, @code{cd} will return an unsuccessful
+status.
+If @var{directory} is @samp{-}, it is converted to @env{$OLDPWD}
+before the directory change is attempted.
+
+If a non-empty directory name from @env{CDPATH} is used, or if
+@samp{-} 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 status is zero if the directory is successfully changed,
+non-zero otherwise.
+
+@item continue
+@btindex continue
+@example
+continue [@var{n}]
+@end example
+
+Resume the next iteration of an enclosing @code{for}, @code{while},
+@code{until}, or @code{select} loop.
+If @var{n} is supplied, the execution of the @var{n}th enclosing loop
+is resumed.
+@var{n} must be greater than or equal to 1.
+The return status is zero unless @var{n} is not greater than or equal to 1.
+
+@item eval
+@btindex eval
+@example
+eval [@var{arguments}]
+@end example
+
+The arguments are concatenated together into a single command, which is
+then read and executed, and its exit status returned as the exit status
+of @code{eval}.
+If there are no arguments or only empty arguments, the return status is
+zero.
+
+@item exec
+@btindex exec
+@example
+exec [-cl] [-a @var{name}] [@var{command} [@var{arguments}]]
+@end example
+
+If @var{command}
+is supplied, it replaces the shell without creating a new process.
+If the @option{-l} option is supplied, the shell places a dash at the
+beginning of the zeroth argument passed to @var{command}.
+This is what the @code{login} program does.
+The @option{-c} option causes @var{command} to be executed with an empty
+environment.
+If @option{-a} is supplied, the shell passes @var{name} as the zeroth
+argument to @var{command}.
+If @var{command}
+cannot be executed for some reason, a non-interactive shell exits,
+unless the @code{execfail} shell option
+is enabled. In that case, it returns failure.
+An interactive shell returns failure if the file cannot be executed.
+If no @var{command} is specified, redirections may be used to affect
+the current shell environment. If there are no redirection errors, the
+return status is zero; otherwise the return status is non-zero.
+
+@item exit
+@btindex exit
+@example
+exit [@var{n}]
+@end example
+
+Exit the shell, returning a status of @var{n} to the shell's parent.
+If @var{n} is omitted, the exit status is that of the last command executed.
+Any trap on @code{EXIT} is executed before the shell terminates.
+
+@item export
+@btindex export
+@example
+export [-fn] [-p] [@var{name}[=@var{value}]]
+@end example
+
+Mark each @var{name} to be passed to child processes
+in the environment. If the @option{-f} option is supplied, the @var{name}s
+refer to shell functions; otherwise the names refer to shell variables.
+The @option{-n} option means to no longer mark each @var{name} for export.
+If no @var{names} are supplied, or if the @option{-p} option is given, a
+list of names of all exported variables is displayed.
+The @option{-p} option displays output in a form that may be reused as input.
+If a variable name is followed by =@var{value}, the value of
+the variable is set to @var{value}.
+
+The return status is zero unless an invalid option is supplied, one of
+the names is not a valid shell variable name, or @option{-f} is supplied
+with a name that is not a shell function.
+
+@item getopts
+@btindex getopts
+@example
+getopts @var{optstring} @var{name} [@var{args}]
+@end example
+
+@code{getopts} is used by shell scripts to parse positional parameters.
+@var{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 whitespace.
+The colon (@samp{:}) and question mark (@samp{?}) may not be
+used as option characters.
+Each time it is invoked, @code{getopts}
+places the next option in the shell variable @var{name}, initializing
+@var{name} if it does not exist,
+and the index of the next argument to be processed into the
+variable @env{OPTIND}.
+@env{OPTIND} is initialized to 1 each time the shell or a shell script
+is invoked.
+When an option requires an argument,
+@code{getopts} places that argument into the variable @env{OPTARG}.
+The shell does not reset @env{OPTIND} automatically; it must be manually
+reset between multiple calls to @code{getopts} within the same shell
+invocation if a new set of parameters is to be used.
+
+When the end of options is encountered, @code{getopts} exits with a
+return value greater than zero.
+@env{OPTIND} is set to the index of the first non-option argument,
+and @var{name} is set to @samp{?}.
+
+@code{getopts}
+normally parses the positional parameters, but if more arguments are
+given in @var{args}, @code{getopts} parses those instead.
+
+@code{getopts} can report errors in two ways. If the first character of
+@var{optstring} is a colon, @var{silent}
+error reporting is used. In normal operation, diagnostic messages
+are printed when invalid options or missing option arguments are
+encountered.
+If the variable @env{OPTERR}
+is set to 0, no error messages will be displayed, even if the first
+character of @code{optstring} is not a colon.
+
+If an invalid option is seen,
+@code{getopts} places @samp{?} into @var{name} and, if not silent,
+prints an error message and unsets @env{OPTARG}.
+If @code{getopts} is silent, the option character found is placed in
+@env{OPTARG} and no diagnostic message is printed.
+
+If a required argument is not found, and @code{getopts}
+is not silent, a question mark (@samp{?}) is placed in @var{name},
+@code{OPTARG} is unset, and a diagnostic message is printed.
+If @code{getopts} is silent, then a colon (@samp{:}) is placed in
+@var{name} and @env{OPTARG} is set to the option character found.
+
+@item hash
+@btindex hash
+@example
+hash [-r] [-p @var{filename}] [-dt] [@var{name}]
+@end example
+
+Each time @code{hash} is invoked, it remembers the full pathnames of the
+commands specified as @var{name} arguments,
+so they need not be searched for on subsequent invocations.
+The commands are found by searching through the directories listed in
+@env{$PATH}.
+Any previously-remembered pathname is discarded.
+The @option{-p} option inhibits the path search, and @var{filename} is
+used as the location of @var{name}.
+The @option{-r} option causes the shell to forget all remembered locations.
+The @option{-d} option causes the shell to forget the remembered location
+of each @var{name}.
+If the @option{-t} option is supplied, the full pathname to which each
+@var{name} corresponds is printed. If multiple @var{name} arguments are
+supplied with @option{-t} the @var{name} is printed before the hashed
+full pathname.
+The @option{-l} option causes output to be displayed in a format
+that may be reused as input.
+If no arguments are given, or if only @option{-l} is supplied,
+information about remembered commands is printed.
+The return status is zero unless a @var{name} is not found or an invalid
+option is supplied.
+
+@item pwd
+@btindex pwd
+@example
+pwd [-LP]
+@end example
+
+Print the absolute pathname of the current working directory.
+If the @option{-P} option is supplied, the pathname printed will not
+contain symbolic links.
+If the @option{-L} option is supplied, the pathname printed may contain
+symbolic links.
+The return status is zero unless an error is encountered while
+determining the name of the current directory or an invalid option
+is supplied.
+
+@item readonly
+@btindex readonly
+@example
+readonly [-aAf] [-p] [@var{name}[=@var{value}]] @dots{}
+@end example
+
+Mark each @var{name} as readonly.
+The values of these names may not be changed by subsequent assignment.
+If the @option{-f} option is supplied, each @var{name} refers to a shell
+function.
+The @option{-a} option means each @var{name} refers to an indexed
+array variable; the @option{-A} option means each @var{name} refers
+to an associative array variable.
+If both options are supplied, @option{-A} takes precedence.
+If no @var{name} arguments are given, or if the @option{-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 @option{-p} option causes output to be displayed in a format that
+may be reused as input.
+If a variable name is followed by =@var{value}, the value of
+the variable is set to @var{value}.
+The return status is zero unless an invalid option is supplied, one of
+the @var{name} arguments is not a valid shell variable or function name,
+or the @option{-f} option is supplied with a name that is not a shell function.
+
+@item return
+@btindex return
+@example
+return [@var{n}]
+@end example
+
+Cause a shell function to stop executing and return the value @var{n}
+to its caller.
+If @var{n} is not supplied, the return value is the exit status of the
+last command executed in the function.
+@code{return} may also be used to terminate execution of a script
+being executed with the @code{.} (@code{source}) builtin,
+returning either @var{n} or
+the exit status of the last command executed within the script as the exit
+status of the script.
+If @var{n} is supplied, the return value is its least significant
+8 bits.
+Any command associated with the @code{RETURN} trap is executed
+before execution resumes after the function or script.
+The return status is non-zero if @code{return} is supplied a non-numeric
+argument or is used outside a function
+and not during the execution of a script by @code{.} or @code{source}.
+
+@item shift
+@btindex shift
+@example
+shift [@var{n}]
+@end example
+
+Shift the positional parameters to the left by @var{n}.
+The positional parameters from @var{n}+1 @dots{} @code{$#} are
+renamed to @code{$1} @dots{} @code{$#}-@var{n}.
+Parameters represented by the numbers @code{$#} to @code{$#}-@var{n}+1
+are unset.
+@var{n} must be a non-negative number less than or equal to @code{$#}.
+If @var{n} is zero or greater than @code{$#}, the positional parameters
+are not changed.
+If @var{n} is not supplied, it is assumed to be 1.
+The return status is zero unless @var{n} is greater than @code{$#} or
+less than zero, non-zero otherwise.
+
+@item test
+@itemx [
+@btindex test
+@btindex [
+@example
+test @var{expr}
+@end example
+
+Evaluate a conditional express
+ion @var{expr} and return a status of 0
+(true) or 1 (false).
+Each operator and operand must be a separate argument.
+Expressions are composed of the primaries described below in
+@ref{Bash Conditional Expressions}.
+@code{test} does not accept any options, nor does it accept and ignore
+an argument of @option{--} as signifying the end of options.
+
+When the @code{[} form is used, the last argument to the command must
+be a @code{]}.
+
+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.
+
+@table @code
+@item ! @var{expr}
+True if @var{expr} is false.
+
+@item ( @var{expr} )
+Returns the value of @var{expr}.
+This may be used to override the normal precedence of operators.
+
+@item @var{expr1} -a @var{expr2}
+True if both @var{expr1} and @var{expr2} are true.
+
+@item @var{expr1} -o @var{expr2}
+True if either @var{expr1} or @var{expr2} is true.
+@end table
+
+The @code{test} and @code{[} builtins evaluate conditional
+expressions using a set of rules based on the number of arguments.
+
+@table @asis
+@item 0 arguments
+The expression is false.
+
+@item 1 argument
+The expression is true if and only if the argument is not null.
+
+@item 2 arguments
+If the first argument is @samp{!}, the expression is true if and
+only if the second argument is null.
+If the first argument is one of the unary conditional operators
+(@pxref{Bash Conditional Expressions}), the expression
+is true if the unary test is true.
+If the first argument is not a valid unary operator, the expression is
+false.
+
+@item 3 arguments
+The following conditions are applied in the order listed.
+If the second argument is one of the binary conditional
+operators (@pxref{Bash Conditional Expressions}), the
+result of the expression is the result of the binary test using the
+first and third arguments as operands.
+The @samp{-a} and @samp{-o} operators are considered binary operators
+when there are three arguments.
+If the first argument is @samp{!}, the value is the negation of
+the two-argument test using the second and third arguments.
+If the first argument is exactly @samp{(} and the third argument is
+exactly @samp{)}, the result is the one-argument test of the second
+argument.
+Otherwise, the expression is false.
+
+@item 4 arguments
+If the first argument is @samp{!}, 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.
+
+@item 5 or more arguments
+The expression is parsed and evaluated according to precedence
+using the rules listed above.
+@end table
+
+When used with @code{test} or @samp{[}, the @samp{<} and @samp{>}
+operators sort lexicographically using ASCII ordering.
+
+@item times
+@btindex times
+@example
+times
+@end example
+
+Print out the user and system times used by the shell and its children.
+The return status is zero.
+
+@item trap
+@btindex trap
+@example
+trap [-lp] [@var{arg}] [@var{sigspec} @dots{}]
+@end example
+
+The commands in @var{arg} are to be read and executed when the
+shell receives signal @var{sigspec}. If @var{arg} is absent (and
+there is a single @var{sigspec}) or
+equal to @samp{-}, each specified signal's disposition is reset
+to the value it had when the shell was started.
+If @var{arg} is the null string, then the signal specified by
+each @var{sigspec} is ignored by the shell and commands it invokes.
+If @var{arg} is not present and @option{-p} has been supplied,
+the shell displays the trap commands associated with each @var{sigspec}.
+If no arguments are supplied, or
+only @option{-p} is given, @code{trap} prints the list of commands
+associated with each signal number in a form that may be reused as
+shell input.
+The @option{-l} option causes the shell to print a list of signal names
+and their corresponding numbers.
+Each @var{sigspec} is either a signal name or a signal number.
+Signal names are case insensitive and the @code{SIG} prefix is optional.
+
+If a @var{sigspec}
+is @code{0} or @code{EXIT}, @var{arg} is executed when the shell exits.
+If a @var{sigspec} is @code{DEBUG}, the command @var{arg} is executed
+before every simple command, @code{for} command, @code{case} command,
+@code{select} command, every arithmetic @code{for} command, and before
+the first command executes in a shell function.
+Refer to the description of the @code{extdebug} option to the
+@code{shopt} builtin (@pxref{The Shopt Builtin}) for details of its
+effect on the @code{DEBUG} trap.
+If a @var{sigspec} is @code{RETURN}, the command @var{arg} is executed
+each time a shell function or a script executed with the @code{.} or
+@code{source} builtins finishes executing.
+
+If a @var{sigspec} is @code{ERR}, the command @var{arg}
+is executed whenever
+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 @code{ERR} trap is not executed if the failed command is part of the
+command list immediately following an @code{until} or @code{while} keyword,
+part of the test following the @code{if} or @code{elif} reserved words,
+part of a command executed in a @code{&&} or @code{||} list
+except the command following the final @code{&&} or @code{||},
+any command in a pipeline but the last,
+or if the command's return
+status is being inverted using @code{!}.
+These are the same conditions obeyed by the @code{errexit} (@option{-e})
+option.
+
+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 zero unless a @var{sigspec} does not specify a
+valid signal.
+
+@item umask
+@btindex umask
+@example
+umask [-p] [-S] [@var{mode}]
+@end example
+
+Set the shell process's file creation mask to @var{mode}. If
+@var{mode} begins with a digit, it is interpreted as an octal number;
+if not, it is interpreted as a symbolic mode mask similar
+to that accepted by the @code{chmod} command. If @var{mode} is
+omitted, the current value of the mask is printed. If the @option{-S}
+option is supplied without a @var{mode} argument, the mask is printed
+in a symbolic format.
+If the @option{-p} option is supplied, and @var{mode}
+is omitted, the output is in a form that may be reused as input.
+The return status is zero if the mode is successfully changed or if
+no @var{mode} argument is supplied, and non-zero otherwise.
+
+Note that when the mode is interpreted as an octal number, each number
+of the umask is subtracted from @code{7}. Thus, a umask of @code{022}
+results in permissions of @code{755}.
+
+@item unset
+@btindex unset
+@example
+unset [-fnv] [@var{name}]
+@end example
+
+Remove each variable or function @var{name}.
+If the @option{-v} option is given, each
+@var{name} refers to a shell variable and that variable is remvoved.
+If the @option{-f} option is given, the @var{name}s refer to shell
+functions, and the function definition is removed.
+If the @option{-n} option is supplied, and @var{name} is a variable with
+the @var{nameref} attribute, @var{name} will be unset rather than the
+variable it references.
+@option{-n} has no effect if the @option{-f} option is supplied.
+If no options are supplied, each @var{name} refers to a variable; if
+there is no variable by that name, any function with that name is
+unset.
+Readonly variables and functions may not be unset.
+The return status is zero unless a @var{name} is readonly.
+@end table
+
+@node Bash Builtins
+@section Bash Builtin Commands
+
+This section describes builtin commands which are unique to
+or have been extended in Bash.
+Some of these commands are specified in the @sc{posix} standard.
+
+@table @code
+
+@item alias
+@btindex alias
+@example
+alias [-p] [@var{name}[=@var{value}] @dots{}]
+@end example
+
+Without arguments or with the @option{-p} option, @code{alias} prints
+the list of aliases on the standard output in a form that allows
+them to be reused as input.
+If arguments are supplied, an alias is defined for each @var{name}
+whose @var{value} is given. If no @var{value} is given, the name
+and value of the alias is printed.
+Aliases are described in @ref{Aliases}.
+
+@item bind
+@btindex bind
+@example
+bind [-m @var{keymap}] [-lpsvPSVX]
+bind [-m @var{keymap}] [-q @var{function}] [-u @var{function}] [-r @var{keyseq}]
+bind [-m @var{keymap}] -f @var{filename}
+bind [-m @var{keymap}] -x @var{keyseq:shell-command}
+bind [-m @var{keymap}] @var{keyseq:function-name}
+bind @var{readline-command}
+@end example
+
+Display current Readline (@pxref{Command Line Editing})
+key and function bindings,
+bind a key sequence to a Readline function or macro,
+or set a Readline variable.
+Each non-option argument is a command as it would appear in a
+Readline initialization file (@pxref{Readline Init File}),
+but each binding or command must be passed as a separate argument; e.g.,
+@samp{"\C-x\C-r":re-read-init-file}.
+
+Options, if supplied, have the following meanings:
+
+@table @code
+@item -m @var{keymap}
+Use @var{keymap} as the keymap to be affected by
+the subsequent bindings. Acceptable @var{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}.
+
+@item -l
+List the names of all Readline functions.
+
+@item -p
+Display Readline function names and bindings in such a way that they
+can be used as input or in a Readline initialization file.
+
+@item -P
+List current Readline function names and bindings.
+
+@item -v
+Display Readline variable names and values in such a way that they
+can be used as input or in a Readline initialization file.
+
+@item -V
+List current Readline variable names and values.
+
+@item -s
+Display Readline key sequences bound to macros and the strings they output
+in such a way that they can be used as input or in a Readline
+initialization file.
+
+@item -S
+Display Readline key sequences bound to macros and the strings they output.
+
+@item -f @var{filename}
+Read key bindings from @var{filename}.
+
+@item -q @var{function}
+Query about which keys invoke the named @var{function}.
+
+@item -u @var{function}
+Unbind all keys bound to the named @var{function}.
+
+@item -r @var{keyseq}
+Remove any current binding for @var{keyseq}.
+
+@item -x @var{keyseq:shell-command}
+Cause @var{shell-command} to be executed whenever @var{keyseq} is
+entered.
+When @var{shell-command} is executed, the shell sets the
+@code{READLINE_LINE} variable to the contents of the Readline line
+buffer and the @code{READLINE_POINT} variable to the current location
+of the insertion point.
+If the executed command changes the value of @code{READLINE_LINE} or
+@code{READLINE_POINT}, those new values will be reflected in the
+editing state.
+
+@item -X
+List all key sequences bound to shell commands and the associated commands
+in a format that can be reused as input.
+@end table
+
+@noindent
+The return status is zero unless an invalid option is supplied or an
+error occurs.
+
+@item builtin
+@btindex builtin
+@example
+builtin [@var{shell-builtin} [@var{args}]]
+@end example
+
+Run a shell builtin, passing it @var{args}, and return its exit status.
+This is useful when defining a shell function with the same
+name as a shell builtin, retaining the functionality of the builtin within
+the function.
+The return status is non-zero if @var{shell-builtin} is not a shell
+builtin command.
+
+@item caller
+@btindex caller
+@example
+caller [@var{expr}]
+@end example
+
+Returns the context of any active subroutine call (a shell function or
+a script executed with the @code{.} or @code{source} builtins).
+
+Without @var{expr}, @code{caller} displays the line number and source
+filename of the current subroutine call.
+If a non-negative integer is supplied as @var{expr}, @code{caller}
+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 @var{expr} does not correspond to a valid position in the
+call stack.
+
+@item command
+@btindex command
+@example
+command [-pVv] @var{command} [@var{arguments} @dots{}]
+@end example
+
+Runs @var{command} with @var{arguments} ignoring any shell function
+named @var{command}.
+Only shell builtin commands or commands found by searching the
+@env{PATH} are executed.
+If there is a shell function named @code{ls}, running @samp{command ls}
+within the function will execute the external command @code{ls}
+instead of calling the function recursively.
+The @option{-p} option means to use a default value for @env{PATH}
+that is guaranteed to find all of the standard utilities.
+The return status in this case is 127 if @var{command} cannot be
+found or an error occurred, and the exit status of @var{command}
+otherwise.
+
+If either the @option{-V} or @option{-v} option is supplied, a
+description of @var{command} is printed. The @option{-v} option
+causes a single word indicating the command or file name used to
+invoke @var{command} to be displayed; the @option{-V} option produces
+a more verbose description. In this case, the return status is
+zero if @var{command} is found, and non-zero if not.
+
+@item declare
+@btindex declare
+@example
+declare [-aAfFgilnrtux] [-p] [@var{name}[=@var{value}] @dots{}]
+@end example
+
+Declare variables and give them attributes. If no @var{name}s
+are given, then display the values of variables instead.
+
+The @option{-p} option will display the attributes and values of each
+@var{name}.
+When @option{-p} is used with @var{name} arguments, additional options
+are ignored.
+
+When @option{-p} is supplied without @var{name} arguments, @code{declare}
+will display the attributes and values of all variables having the
+attributes specified by the additional options.
+If no other options are supplied with @option{-p}, @code{declare} will
+display the attributes and values of all shell variables. The @option{-f}
+option will restrict the display to shell functions.
+
+The @option{-F} option inhibits the display of function definitions;
+only the function name and attributes are printed.
+If the @code{extdebug} shell option is enabled using @code{shopt}
+(@pxref{The Shopt Builtin}), the source file name and line number where
+the function is defined are displayed as well.
+@option{-F} implies @option{-f}.
+
+The @option{-g} option forces variables to be created or modified at
+the global scope, even when @code{declare} 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 attributes or to give variables attributes:
+
+@table @code
+@item -a
+Each @var{name} is an indexed array variable (@pxref{Arrays}).
+
+@item -A
+Each @var{name} is an associative array variable (@pxref{Arrays}).
+
+@item -f
+Use function names only.
+
+@item -i
+The variable is to be treated as
+an integer; arithmetic evaluation (@pxref{Shell Arithmetic}) is
+performed when the variable is assigned a value.
+
+@item -l
+When the variable is assigned a value, all upper-case characters are
+converted to lower-case.
+The upper-case attribute is disabled.
+
+@item -n
+Give each @var{name} the @var{nameref} attribute, making
+it a name reference to another variable.
+That other variable is defined by the value of @var{name}.
+All references and assignments to @var{name}, except for changing the
+@option{-n} attribute itself, are performed on the variable referenced by
+@var{name}'s value.
+The @option{-n} attribute cannot be applied to array variables.
+
+@item -r
+Make @var{name}s readonly. These names cannot then be assigned values
+by subsequent assignment statements or unset.
+
+@item -t
+Give each @var{name} the @code{trace} attribute.
+Traced functions inherit the @code{DEBUG} and @code{RETURN} traps from
+the calling shell.
+The trace attribute has no special meaning for variables.
+
+@item -u
+When the variable is assigned a value, all lower-case characters are
+converted to upper-case.
+The lower-case attribute is disabled.
+
+@item -x
+Mark each @var{name} for export to subsequent commands via
+the environment.
+@end table
+
+Using @samp{+} instead of @samp{-} turns off the attribute instead,
+with the exceptions that @samp{+a}
+may not be used to destroy an array variable and @samp{+r} will not
+remove the readonly attribute.
+When used in a function, @code{declare} makes each @var{name} local,
+as with the @code{local} command, unless the @option{-g} option is used.
+If a variable name is followed by =@var{value}, the value of the variable
+is set to @var{value}.
+
+The return status is zero unless an invalid option is encountered,
+an attempt is made to define a function using @samp{-f foo=bar},
+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 (@pxref{Arrays}),
+one of the @var{names} 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 @option{-f}.
+
+@item echo
+@btindex echo
+@example
+echo [-neE] [@var{arg} @dots{}]
+@end example
+
+Output the @var{arg}s, separated by spaces, terminated with a
+newline.
+The return status is 0 unless a write error occurs.
+If @option{-n} is specified, the trailing newline is suppressed.
+If the @option{-e} option is given, interpretation of the following
+backslash-escaped characters is enabled.
+The @option{-E} option disables the interpretation of these escape characters,
+even on systems where they are interpreted by default.
+The @code{xpg_echo} shell option may be used to
+dynamically determine whether or not @code{echo} expands these
+escape characters by default.
+@code{echo} does not interpret @option{--} to mean the end of options.
+
+@code{echo} interprets the following escape sequences:
+@table @code
+@item \a
+alert (bell)
+@item \b
+backspace
+@item \c
+suppress further output
+@item \e
+@itemx \E
+escape
+@item \f
+form feed
+@item \n
+new line
+@item \r
+carriage return
+@item \t
+horizontal tab
+@item \v
+vertical tab
+@item \\
+backslash
+@item \0@var{nnn}
+the eight-bit character whose value is the octal value @var{nnn}
+(zero to three octal digits)
+@item \x@var{HH}
+the eight-bit character whose value is the hexadecimal value @var{HH}
+(one or two hex digits)
+@item \u@var{HHHH}
+the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value
+@var{HHHH} (one to four hex digits)
+@item \U@var{HHHHHHHH}
+the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value
+@var{HHHHHHHH} (one to eight hex digits)
+@end table
+
+@item enable
+@btindex enable
+@example
+enable [-a] [-dnps] [-f @var{filename}] [@var{name} @dots{}]
+@end example
+
+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 @option{-n} is used, the @var{name}s become disabled. Otherwise
+@var{name}s are enabled. For example, to use the @code{test} binary
+found via @env{$PATH} instead of the shell builtin version, type
+@samp{enable -n test}.
+
+If the @option{-p} option is supplied, or no @var{name} arguments appear,
+a list of shell builtins is printed. With no other arguments, the list
+consists of all enabled shell builtins.
+The @option{-a} option means to list
+each builtin with an indication of whether or not it is enabled.
+
+The @option{-f} option means to load the new builtin command @var{name}
+from shared object @var{filename}, on systems that support dynamic loading.
+The @option{-d} option will delete a builtin loaded with @option{-f}.
+
+If there are no options, a list of the shell builtins is displayed.
+The @option{-s} option restricts @code{enable} to the @sc{posix} special
+builtins. If @option{-s} is used with @option{-f}, the new builtin becomes
+a special builtin (@pxref{Special Builtins}).
+
+The return status is zero unless a @var{name} is not a shell builtin
+or there is an error loading a new builtin from a shared object.
+
+@item help
+@btindex help
+@example
+help [-dms] [@var{pattern}]
+@end example
+
+Display helpful information about builtin commands.
+If @var{pattern} is specified, @code{help} gives detailed help
+on all commands matching @var{pattern}, otherwise a list of
+the builtins is printed.
+
+Options, if supplied, have the following meanings:
+
+@table @code
+@item -d
+Display a short description of each @var{pattern}
+@item -m
+Display the description of each @var{pattern} in a manpage-like format
+@item -s
+Display only a short usage synopsis for each @var{pattern}
+@end table
+
+The return status is zero unless no command matches @var{pattern}.
+
+@item let
+@btindex let
+@example
+let @var{expression} [@var{expression} @dots{}]
+@end example
+
+The @code{let} builtin allows arithmetic to be performed on shell
+variables. Each @var{expression} is evaluated according to the
+rules given below in @ref{Shell Arithmetic}. If the
+last @var{expression} evaluates to 0, @code{let} returns 1;
+otherwise 0 is returned.
+
+@item local
+@btindex local
+@example
+local [@var{option}] @var{name}[=@var{value}] @dots{}
+@end example
+
+For each argument, a local variable named @var{name} is created,
+and assigned @var{value}.
+The @var{option} can be any of the options accepted by @code{declare}.
+@code{local} can only be used within a function; it makes the variable
+@var{name} have a visible scope restricted to that function and its
+children. The return status is zero unless @code{local} is used outside
+a function, an invalid @var{name} is supplied, or @var{name} is a
+readonly variable.
+
+@item logout
+@btindex logout
+@example
+logout [@var{n}]
+@end example
+
+Exit a login shell, returning a status of @var{n} to the shell's
+parent.
+
+@item mapfile
+@btindex mapfile
+@example
+mapfile [-n @var{count}] [-O @var{origin}] [-s @var{count}] [-t] [-u @var{fd}]
+ [-C @var{callback}] [-c @var{quantum}] [@var{array}]
+@end example
+
+Read lines from the standard input into the indexed array variable @var{array},
+or from file descriptor @var{fd}
+if the @option{-u} option is supplied.
+The variable @code{MAPFILE} is the default @var{array}.
+Options, if supplied, have the following meanings:
+
+@table @code
+
+@item -n
+Copy at most @var{count} lines. If @var{count} is 0, all lines are copied.
+@item -O
+Begin assigning to @var{array} at index @var{origin}.
+The default index is 0.
+@item -s
+Discard the first @var{count} lines read.
+@item -t
+Remove a trailing newline from each line read.
+@item -u
+Read lines from file descriptor @var{fd} instead of the standard input.
+@item -C
+Evaluate @var{callback} each time @var{quantum}P lines are read.
+The @option{-c} option specifies @var{quantum}.
+@item -c
+Specify the number of lines read between each call to @var{callback}.
+@end table
+
+If @option{-C} is specified without @option{-c},
+the default quantum is 5000.
+When @var{callback} 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.
+@var{callback} is evaluated after the line is read but before the
+array element is assigned.
+
+If not supplied with an explicit origin, @code{mapfile} will clear @var{array}
+before assigning to it.
+
+@code{mapfile} returns successfully unless an invalid option or option
+argument is supplied, @var{array} is invalid or unassignable, or @var{array}
+is not an indexed array.
+
+@item printf
+@btindex printf
+@example
+printf [-v @var{var}] @var{format} [@var{arguments}]
+@end example
+
+Write the formatted @var{arguments} to the standard output under the
+control of the @var{format}.
+The @option{-v} option causes the output to be assigned to the variable
+@var{var} rather than being printed to the standard output.
+
+The @var{format} is a character string which contains three types of objects:
+plain characters, which are simply copied to standard output, character
+escape sequences, which are converted and copied to the standard output, and
+format specifications, each of which causes printing of the next successive
+@var{argument}.
+In addition to the standard @code{printf(1)} formats, @code{printf}
+interprets the following extensions:
+
+@table @code
+@item %b
+Causes @code{printf} to expand backslash escape sequences in the
+corresponding @var{argument},
+except that @samp{\c} terminates output, backslashes in
+@samp{\'}, @samp{\"}, and @samp{\?} are not removed, and octal escapes
+beginning with @samp{\0} may contain up to four digits.
+@item %q
+Causes @code{printf} to output the
+corresponding @var{argument} in a format that can be reused as shell input.
+@item %(@var{datefmt})T
+Causes @code{printf} to output the date-time string resulting from using
+@var{datefmt} as a format string for @code{strftime}(3).
+The corresponding @var{argument} 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 @code{printf} behavior.
+@end table
+
+@noindent
+Arguments to non-string format specifiers are treated as C language 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.
+
+The @var{format} is reused as necessary to consume all of the @var{arguments}.
+If the @var{format} requires more @var{arguments} 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.
+
+@item read
+@btindex read
+@example
+read [-ers] [-a @var{aname}] [-d @var{delim}] [-i @var{text}] [-n @var{nchars}]
+ [-N @var{nchars}] [-p @var{prompt}] [-t @var{timeout}] [-u @var{fd}] [@var{name} @dots{}]
+@end example
+
+One line is read from the standard input, or from the file descriptor
+@var{fd} supplied as an argument to the @option{-u} option, and the first word
+is assigned to the first @var{name}, the second word to the second @var{name},
+and so on, with leftover words and their intervening separators assigned
+to the last @var{name}.
+If there are fewer words read from the input stream than names,
+the remaining names are assigned empty values.
+The characters in the value of the @env{IFS} variable
+are used to split the line into words.
+The backslash character @samp{\} may be used to remove any special
+meaning for the next character read and for line continuation.
+If no names are supplied, the line read is assigned to the
+variable @env{REPLY}.
+The return code is zero, unless end-of-file is encountered, @code{read}
+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 @option{-u}.
+
+Options, if supplied, have the following meanings:
+
+@table @code
+@item -a @var{aname}
+The words are assigned to sequential indices of the array variable
+@var{aname}, starting at 0.
+All elements are removed from @var{aname} before the assignment.
+Other @var{name} arguments are ignored.
+
+@item -d @var{delim}
+The first character of @var{delim} is used to terminate the input line,
+rather than newline.
+
+@item -e
+Readline (@pxref{Command Line Editing}) is used to obtain the line.
+Readline uses the current (or default, if line editing was not previously
+active) editing settings.
+
+@item -i @var{text}
+If Readline is being used to read the line, @var{text} is placed into
+the editing buffer before editing begins.
+
+@item -n @var{nchars}
+@code{read} returns after reading @var{nchars} characters rather than
+waiting for a complete line of input, but honor a delimiter if fewer
+than @var{nchars} characters are read before the delimiter.
+
+@item -N @var{nchars}
+@code{read} returns after reading exactly @var{nchars} characters rather
+than waiting for a complete line of input, unless EOF is encountered or
+@code{read} times out.
+Delimiter characters encountered in the input are
+not treated specially and do not cause @code{read} to return until
+@var{nchars} characters are read.
+
+@item -p @var{prompt}
+Display @var{prompt}, without a trailing newline, before attempting
+to read any input.
+The prompt is displayed only if input is coming from a terminal.
+
+@item -r
+If this option is given, 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.
+
+@item -s
+Silent mode. If input is coming from a terminal, characters are
+not echoed.
+
+@item -t @var{timeout}
+Cause @code{read} to time out and return failure if a complete line of
+input (or a specified number of characters)
+is not read within @var{timeout} seconds.
+@var{timeout} may be a decimal number with a fractional portion following
+the decimal point.
+This option is only effective if @code{read} is reading input from a
+terminal, pipe, or other special file; it has no effect when reading
+from regular files.
+If @code{read} times out, @code{read} saves any partial input read into
+the specified variable @var{name}.
+If @var{timeout} is 0, @code{read} returns immediately, without trying to
+read and 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.
+
+@item -u @var{fd}
+Read input from file descriptor @var{fd}.
+@end table
+
+@item readarray
+@btindex readarray
+@example
+readarray [-n @var{count}] [-O @var{origin}] [-s @var{count}] [-t] [-u @var{fd}]
+ [-C @var{callback}] [-c @var{quantum}] [@var{array}]
+@end example
+
+Read lines from the standard input into the indexed array variable @var{array},
+or from file descriptor @var{fd}
+if the @option{-u} option is supplied.
+
+A synonym for @code{mapfile}.
+
+@item source
+@btindex source
+@example
+source @var{filename}
+@end example
+
+A synonym for @code{.} (@pxref{Bourne Shell Builtins}).
+
+@item type
+@btindex type
+@example
+type [-afptP] [@var{name} @dots{}]
+@end example
+
+For each @var{name}, indicate how it would be interpreted if used as a
+command name.
+
+If the @option{-t} option is used, @code{type} prints a single word
+which is one of @samp{alias}, @samp{function}, @samp{builtin},
+@samp{file} or @samp{keyword},
+if @var{name} is an alias, shell function, shell builtin,
+disk file, or shell reserved word, respectively.
+If the @var{name} is not found, then nothing is printed, and
+@code{type} returns a failure status.
+
+If the @option{-p} option is used, @code{type} either returns the name
+of the disk file that would be executed, or nothing if @option{-t}
+would not return @samp{file}.
+
+The @option{-P} option forces a path search for each @var{name}, even if
+@option{-t} would not return @samp{file}.
+
+If a command is hashed, @option{-p} and @option{-P} print the hashed value,
+which is not necessarily the file that appears first in @code{$PATH}.
+
+If the @option{-a} option is used, @code{type} returns all of the places
+that contain an executable named @var{file}.
+This includes aliases and functions, if and only if the @option{-p} option
+is not also used.
+
+If the @option{-f} option is used, @code{type} does not attempt to find
+shell functions, as with the @code{command} builtin.
+
+The return status is zero if all of the @var{names} are found, non-zero
+if any are not found.
+
+@item typeset
+@btindex typeset
+@example
+typeset [-afFgrxilnrtux] [-p] [@var{name}[=@var{value}] @dots{}]
+@end example
+
+The @code{typeset} command is supplied for compatibility with the Korn
+shell.
+It is a synonym for the @code{declare} builtin command.
+
+@item ulimit
+@btindex ulimit
+@example
+ulimit [-abcdefilmnpqrstuvxHST] [@var{limit}]
+@end example
+
+@code{ulimit} provides control over the resources available to processes
+started by the shell, on systems that allow such control. If an
+option is given, it is interpreted as follows:
+
+@table @code
+@item -S
+Change and report the soft limit associated with a resource.
+
+@item -H
+Change and report the hard limit associated with a resource.
+
+@item -a
+All current limits are reported.
+
+@item -b
+The maximum socket buffer size.
+
+@item -c
+The maximum size of core files created.
+
+@item -d
+The maximum size of a process's data segment.
+
+@item -e
+The maximum scheduling priority ("nice").
+
+@item -f
+The maximum size of files written by the shell and its children.
+
+@item -i
+The maximum number of pending signals.
+
+@item -l
+The maximum size that may be locked into memory.
+
+@item -m
+The maximum resident set size (many systems do not honor this limit).
+
+@item -n
+The maximum number of open file descriptors (most systems do not
+allow this value to be set).
+
+@item -p
+The pipe buffer size.
+
+@item -q
+The maximum number of bytes in POSIX message queues.
+
+@item -r
+The maximum real-time scheduling priority.
+
+@item -s
+The maximum stack size.
+
+@item -t
+The maximum amount of cpu time in seconds.
+
+@item -u
+The maximum number of processes available to a single user.
+
+@item -v
+The maximum amount of virtual memory available to the shell, and, on
+some systems, to its children.
+
+@item -x
+The maximum number of file locks.
+
+@item -T
+The maximum number of threads.
+@end table
+
+If @var{limit} is given, and the @option{-a} option is not used,
+@var{limit} is the new value of the specified resource.
+The special @var{limit} values @code{hard}, @code{soft}, and
+@code{unlimited} stand for the current hard limit, the current soft limit,
+and no limit, respectively.
+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.
+Otherwise, the current value of the soft limit for the specified resource
+is printed, unless the @option{-H} option is supplied.
+When setting new limits, if neither @option{-H} nor @option{-S} is supplied,
+both the hard and soft limits are set.
+If no option is given, then @option{-f} is assumed. Values are in 1024-byte
+increments, except for @option{-t}, which is in seconds; @option{-p},
+which is in units of 512-byte blocks; and @option{-T}, @option{-b},
+@option{-n} and @option{-u}, which are unscaled values.
+
+The return status is zero unless an invalid option or argument is supplied,
+or an error occurs while setting a new limit.
+
+@item unalias
+@btindex unalias
+@example
+unalias [-a] [@var{name} @dots{} ]
+@end example
+
+Remove each @var{name} from the list of aliases. If @option{-a} is
+supplied, all aliases are removed.
+Aliases are described in @ref{Aliases}.
+@end table
+
+@node Modifying Shell Behavior
+@section Modifying Shell Behavior
+
+@menu
+* The Set Builtin:: Change the values of shell attributes and
+ positional parameters.
+* The Shopt Builtin:: Modify shell optional behavior.
+@end menu
+
+@node The Set Builtin
+@subsection The Set Builtin
+
+This builtin is so complicated that it deserves its own section. @code{set}
+allows you to change the values of shell options and set the positional
+parameters, or to display the names and values of shell variables.
+
+@table @code
+@item set
+@btindex set
+@example
+set [--abefhkmnptuvxBCEHPT] [-o @var{option-name}] [@var{argument} @dots{}]
+set [+abefhkmnptuvxBCEHPT] [+o @var{option-name}] [@var{argument} @dots{}]
+@end example
+
+If no options or arguments are supplied, @code{set} displays the names
+and values of all shell variables and functions, sorted according to the
+current locale, in a format that may be reused as input
+for setting or resetting the currently-set variables.
+Read-only variables cannot be reset.
+In @sc{posix} mode, only shell variables are listed.
+
+When options are supplied, they set or unset shell attributes.
+Options, if specified, have the following meanings:
+
+@table @code
+@item -a
+Mark variables and function which are modified or created for export
+to the environment of subsequent commands.
+
+@item -b
+Cause the status of terminated background jobs to be reported
+immediately, rather than before printing the next primary prompt.
+
+@item -e
+Exit immediately if
+a pipeline (@pxref{Pipelines}), which may consist of a single simple command
+(@pxref{Simple Commands}),
+a list (@pxref{Lists}),
+or a compound command (@pxref{Compound Commands})
+returns a non-zero status.
+The shell does not exit if the command that fails is part of the
+command list immediately following a @code{while} or @code{until} keyword,
+part of the test in an @code{if} statement,
+part of any command executed in a @code{&&} or @code{||} list except
+the command following the final @code{&&} or @code{||},
+any command in a pipeline but the last,
+or if the command's return status is being inverted with @code{!}.
+If a compound command other than a subshell
+returns a non-zero status because a command failed
+while @option{-e} was being ignored, the shell does not exit.
+A trap on @code{ERR}, if set, is executed before the shell exits.
+
+This option applies to the shell environment and each subshell environment
+separately (@pxref{Command Execution Environment}), and may cause
+subshells to exit before executing all the commands in the subshell.
+
+If a compound command or shell function executes in a context where
+@option{-e} is being ignored,
+none of the commands executed within the compound command or function body
+will be affected by the @option{-e} setting, even if @option{-e} is set
+and a command returns a failure status.
+If a compound command or shell function sets @option{-e} while executing in
+a context where @option{-e} is ignored, that setting will not have any
+effect until the compound command or the command containing the function
+call completes.
+
+@item -f
+Disable filename expansion (globbing).
+
+@item -h
+Locate and remember (hash) commands as they are looked up for execution.
+This option is enabled by default.
+
+@item -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.
+
+@item -m
+Job control is enabled (@pxref{Job Control}).
+All processes run in a separate process group.
+When a background job completes, the shell prints a line
+containing its exit status.
+
+@item -n
+Read commands but do not execute them; this may be used to check a
+script for syntax errors.
+This option is ignored by interactive shells.
+
+@item -o @var{option-name}
+
+Set the option corresponding to @var{option-name}:
+
+@table @code
+@item allexport
+Same as @code{-a}.
+
+@item braceexpand
+Same as @code{-B}.
+
+@item emacs
+Use an @code{emacs}-style line editing interface (@pxref{Command Line Editing}).
+This also affects the editing interface used for @code{read -e}.
+
+@item errexit
+Same as @code{-e}.
+
+@item errtrace
+Same as @code{-E}.
+
+@item functrace
+Same as @code{-T}.
+
+@item hashall
+Same as @code{-h}.
+
+@item histexpand
+Same as @code{-H}.
+
+@item history
+Enable command history, as described in @ref{Bash History Facilities}.
+This option is on by default in interactive shells.
+
+@item ignoreeof
+An interactive shell will not exit upon reading EOF.
+
+@item keyword
+Same as @code{-k}.
+
+@item monitor
+Same as @code{-m}.
+
+@item noclobber
+Same as @code{-C}.
+
+@item noexec
+Same as @code{-n}.
+
+@item noglob
+Same as @code{-f}.
+
+@item nolog
+Currently ignored.
+
+@item notify
+Same as @code{-b}.
+
+@item nounset
+Same as @code{-u}.
+
+@item onecmd
+Same as @code{-t}.
+
+@item physical
+Same as @code{-P}.
+
+@item 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.
+
+@item posix
+Change the behavior of Bash where the default operation differs
+from the @sc{posix} standard to match the standard
+(@pxref{Bash POSIX Mode}).
+This is intended to make Bash behave as a strict superset of that
+standard.
+
+@item privileged
+Same as @code{-p}.
+
+@item verbose
+Same as @code{-v}.
+
+@item vi
+Use a @code{vi}-style line editing interface.
+This also affects the editing interface used for @code{read -e}.
+
+@item xtrace
+Same as @code{-x}.
+@end table
+
+@item -p
+Turn on privileged mode.
+In this mode, the @env{$BASH_ENV} and @env{$ENV} files are not
+processed, shell functions are not inherited from the environment,
+and the @env{SHELLOPTS}, @env{BASHOPTS}, @env{CDPATH} and @env{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 @option{-p} option is not supplied, these actions
+are taken and the effective user id is set to the real user id.
+If the @option{-p} 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.
+
+@item -t
+Exit after reading and executing one command.
+
+@item -u
+Treat unset variables and parameters other than the special parameters
+@samp{@@} or @samp{*} as an error when performing parameter expansion.
+An error message will be written to the standard error, and a non-interactive
+shell will exit.
+
+@item -v
+Print shell input lines as they are read.
+
+@item -x
+Print a trace of simple commands, @code{for} commands, @code{case}
+commands, @code{select} commands, and arithmetic @code{for} commands
+and their arguments or associated word lists after they are
+expanded and before they are executed. The value of the @env{PS4}
+variable is expanded and the resultant value is printed before
+the command and its expanded arguments.
+
+@item -B
+The shell will perform brace expansion (@pxref{Brace Expansion}).
+This option is on by default.
+
+@item -C
+Prevent output redirection using @samp{>}, @samp{>&}, and @samp{<>}
+from overwriting existing files.
+
+@item -E
+If set, any trap on @code{ERR} is inherited by shell functions, command
+substitutions, and commands executed in a subshell environment.
+The @code{ERR} trap is normally not inherited in such cases.
+
+@item -H
+Enable @samp{!} style history substitution (@pxref{History Interaction}).
+This option is on by default for interactive shells.
+
+@item -P
+If set, do not resolve symbolic links when performing commands such as
+@code{cd} which change the current directory. The physical directory
+is used instead. By default, Bash follows
+the logical chain of directories when performing commands
+which change the current directory.
+
+For example, if @file{/usr/sys} is a symbolic link to @file{/usr/local/sys}
+then:
+@example
+$ cd /usr/sys; echo $PWD
+/usr/sys
+$ cd ..; pwd
+/usr
+@end example
+
+@noindent
+If @code{set -P} is on, then:
+@example
+$ cd /usr/sys; echo $PWD
+/usr/local/sys
+$ cd ..; pwd
+/usr/local
+@end example
+
+@item -T
+If set, any trap on @code{DEBUG} and @code{RETURN} are inherited by
+shell functions, command substitutions, and commands executed
+in a subshell environment.
+The @code{DEBUG} and @code{RETURN} traps are normally not inherited
+in such cases.
+
+@item --
+If no arguments follow this option, then the positional parameters are
+unset. Otherwise, the positional parameters are set to the
+@var{arguments}, even if some of them begin with a @samp{-}.
+
+@item -
+Signal the end of options, cause all remaining @var{arguments}
+to be assigned to the positional parameters. The @option{-x}
+and @option{-v} options are turned off.
+If there are no arguments, the positional parameters remain unchanged.
+@end table
+
+Using @samp{+} rather than @samp{-} causes these options to be
+turned off. The options can also be used upon invocation of the
+shell. The current set of options may be found in @code{$-}.
+
+The remaining N @var{arguments} are positional parameters and are
+assigned, in order, to @code{$1}, @code{$2}, @dots{} @code{$N}.
+The special parameter @code{#} is set to N.
+
+The return status is always zero unless an invalid option is supplied.
+@end table
+
+@node The Shopt Builtin
+@subsection The Shopt Builtin
+
+This builtin allows you to change additional shell optional behavior.
+
+@table @code
+
+@item shopt
+@btindex shopt
+@example
+shopt [-pqsu] [-o] [@var{optname} @dots{}]
+@end example
+
+Toggle the values of variables controlling optional shell behavior.
+With no options, or with the @option{-p} option, a list of all settable
+options is displayed, with an indication of whether or not each is set.
+The @option{-p} option causes output to be displayed in a form that
+may be reused as input.
+Other options have the following meanings:
+
+@table @code
+@item -s
+Enable (set) each @var{optname}.
+
+@item -u
+Disable (unset) each @var{optname}.
+
+@item -q
+Suppresses normal output; the return status
+indicates whether the @var{optname} is set or unset.
+If multiple @var{optname} arguments are given with @option{-q},
+the return status is zero if all @var{optnames} are enabled;
+non-zero otherwise.
+
+@item -o
+Restricts the values of
+@var{optname} to be those defined for the @option{-o} option to the
+@code{set} builtin (@pxref{The Set Builtin}).
+@end table
+
+If either @option{-s} or @option{-u}
+is used with no @var{optname} arguments, @code{shopt} shows only
+those options which are set or unset, respectively.
+
+Unless otherwise noted, the @code{shopt} options are disabled (off)
+by default.
+
+The return status when listing options is zero if all @var{optnames}
+are enabled, non-zero otherwise. When setting or unsetting options,
+the return status is zero unless an @var{optname} is not a valid shell
+option.
+
+The list of @code{shopt} options is:
+@table @code
+
+@item autocd
+If set, a command name that is the name of a directory is executed as if
+it were the argument to the @code{cd} command.
+This option is only used by interactive shells.
+
+@item cdable_vars
+If this is set, an argument to the @code{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.
+
+@item cdspell
+If set, minor errors in the spelling of a directory component in a
+@code{cd} command will be corrected.
+The errors checked for are transposed characters,
+a missing character, and a character too many.
+If a correction is found, the corrected path is printed,
+and the command proceeds.
+This option is only used by interactive shells.
+
+@item checkhash
+If this is set, Bash 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.
+
+@item checkjobs
+If set, Bash 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 (@pxref{Job Control}).
+The shell always postpones exiting if any jobs are stopped.
+
+@item checkwinsize
+If set, Bash checks the window size after each command
+ and, if necessary, updates the values of
+@env{LINES} and @env{COLUMNS}.
+
+@item cmdhist
+If set, 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.
+
+@item compat31
+If set, Bash
+changes its behavior to that of version 3.1 with respect to quoted
+arguments to the conditional command's @samp{=~} operator
+and with respect to locale-specific
+string comparison when using the @code{[[}
+conditional command's @samp{<} and @samp{>} operators.
+Bash versions prior to bash-4.1 use ASCII collation and strcmp(3);
+bash-4.1 and later use the current locale's collation sequence and strcoll(3).
+
+@item compat32
+If set, Bash
+changes its behavior to that of version 3.2 with respect to locale-specific
+string comparison when using the @code{[[}
+conditional command's @samp{<} and @samp{>} operators (see previous item).
+
+@item compat40
+If set, Bash
+changes its behavior to that of version 4.0 with respect to locale-specific
+string comparison when using the @code{[[}
+conditional command's @samp{<} and @samp{>} operators (see description
+of @code{compat31})
+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.
+
+@item compat41
+If set, Bash, when in posix mode, treats a single quote in a double-quoted
+parameter expansion as a special character. The single quotes must match
+(an even number) and the characters between the single quotes are considered
+quoted. This is the behavior of @sc{posix} mode through version 4.1.
+The default Bash behavior remains as in previous versions.
+
+@item compat42
+If set, Bash
+does not process the replacement string in the pattern substitution word
+expansion using quote removal.
+
+@item complete_fullquote
+If set, Bash
+quotes all shell metacharacters in filenames and directory names when
+performing completion.
+If not set, 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.
+
+@item direxpand
+If set, 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, Bash attempts to preserve what the user typed.
+
+@item dirspell
+If set, Bash
+attempts spelling correction on directory names during word completion
+if the directory name initially supplied does not exist.
+
+@item dotglob
+If set, Bash includes filenames beginning with a `.' in
+the results of filename expansion.
+
+@item execfail
+If this is set, a non-interactive shell will not exit if
+it cannot execute the file specified as an argument to the @code{exec}
+builtin command. An interactive shell does not exit if @code{exec}
+fails.
+
+@item expand_aliases
+If set, aliases are expanded as described below under Aliases,
+@ref{Aliases}.
+This option is enabled by default for interactive shells.
+
+@item extdebug
+If set, behavior intended for use by debuggers is enabled:
+
+@enumerate
+@item
+The @option{-F} option to the @code{declare} builtin (@pxref{Bash Builtins})
+displays the source file name and line number corresponding to each function
+name supplied as an argument.
+
+@item
+If the command run by the @code{DEBUG} trap returns a non-zero value, the
+next command is skipped and not executed.
+
+@item
+If the command run by the @code{DEBUG} trap returns a value of 2, and the
+shell is executing in a subroutine (a shell function or a shell script
+executed by the @code{.} or @code{source} builtins), a call to
+@code{return} is simulated.
+
+@item
+@code{BASH_ARGC} and @code{BASH_ARGV} are updated as described in their
+descriptions (@pxref{Bash Variables}).
+
+@item
+Function tracing is enabled: command substitution, shell functions, and
+subshells invoked with @code{( @var{command} )} inherit the
+@code{DEBUG} and @code{RETURN} traps.
+
+@item
+Error tracing is enabled: command substitution, shell functions, and
+subshells invoked with @code{( @var{command} )} inherit the
+@code{ERR} trap.
+@end enumerate
+
+@item extglob
+If set, the extended pattern matching features described above
+(@pxref{Pattern Matching}) are enabled.
+
+@item extquote
+If set, @code{$'@var{string}'} and @code{$"@var{string}"} quoting is
+performed within @code{$@{@var{parameter}@}} expansions
+enclosed in double quotes. This option is enabled by default.
+
+@item failglob
+If set, patterns which fail to match filenames during filename expansion
+result in an expansion error.
+
+@item force_fignore
+If set, the suffixes specified by the @env{FIGNORE} shell variable
+cause words to be ignored when performing word completion even if
+the ignored words are the only possible completions.
+@xref{Bash Variables}, for a description of @env{FIGNORE}.
+This option is enabled by default.
+
+@item globasciiranges
+If set, range expressions used in pattern matching (@pxref{Pattern Matching})
+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
+@samp{b} will not collate between @samp{A} and @samp{B},
+and upper-case and lower-case ASCII characters will collate together.
+
+@item globstar
+If set, the pattern @samp{**} used in a filename expansion context will
+match all files and zero or more directories and subdirectories.
+If the pattern is followed by a @samp{/}, only directories and
+subdirectories match.
+
+@item gnu_errfmt
+If set, shell error messages are written in the standard @sc{gnu} error
+message format.
+
+@item histappend
+If set, the history list is appended to the file named by the value
+of the @env{HISTFILE}
+variable when the shell exits, rather than overwriting the file.
+
+@item histreedit
+If set, and Readline
+is being used, a user is given the opportunity to re-edit a
+failed history substitution.
+
+@item histverify
+If set, and 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 Readline editing buffer, allowing further modification.
+
+@item hostcomplete
+If set, and Readline is being used, Bash will attempt to perform
+hostname completion when a word containing a @samp{@@} is being
+completed (@pxref{Commands For Completion}). This option is enabled
+by default.
+
+@item huponexit
+If set, Bash will send @code{SIGHUP} to all jobs when an interactive
+login shell exits (@pxref{Signals}).
+
+@item interactive_comments
+Allow a word beginning with @samp{#}
+to cause that word and all remaining characters on that
+line to be ignored in an interactive shell.
+This option is enabled by default.
+
+@item 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.
+
+@item lithist
+If enabled, and the @code{cmdhist}
+option is enabled, multi-line commands are saved to the history with
+embedded newlines rather than using semicolon separators where possible.
+
+@item login_shell
+The shell sets this option if it is started as a login shell
+(@pxref{Invoking Bash}).
+The value may not be changed.
+
+@item mailwarn
+If set, and a file that Bash is checking for mail has been
+accessed since the last time it was checked, the message
+@code{"The mail in @var{mailfile} has been read"} is displayed.
+
+@item no_empty_cmd_completion
+If set, and Readline is being used, Bash will not attempt to search
+the @env{PATH} for possible completions when completion is attempted
+on an empty line.
+
+@item nocaseglob
+If set, Bash matches filenames in a case-insensitive fashion when
+performing filename expansion.
+
+@item nocasematch
+If set, Bash matches patterns in a case-insensitive fashion when
+performing matching while executing @code{case} or @code{[[}
+conditional commands.
+
+@item nullglob
+If set, Bash allows filename patterns which match no
+files to expand to a null string, rather than themselves.
+
+@item progcomp
+If set, the programmable completion facilities
+(@pxref{Programmable Completion}) are enabled.
+This option is enabled by default.
+
+@item promptvars
+If set, prompt strings undergo
+parameter expansion, command substitution, arithmetic
+expansion, and quote removal after being expanded
+as described below (@pxref{Controlling the Prompt}).
+This option is enabled by default.
+
+@item restricted_shell
+The shell sets this option if it is started in restricted mode
+(@pxref{The Restricted Shell}).
+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.
+
+@item shift_verbose
+If this is set, the @code{shift}
+builtin prints an error message when the shift count exceeds the
+number of positional parameters.
+
+@item sourcepath
+If set, the @code{source} builtin uses the value of @env{PATH}
+to find the directory containing the file supplied as an argument.
+This option is enabled by default.
+
+@item xpg_echo
+If set, the @code{echo} builtin expands backslash-escape sequences
+by default.
+
+@end table
+
+@noindent
+The return status when listing options is zero if all @var{optnames}
+are enabled, non-zero otherwise.
+When setting or unsetting options, the return status is zero unless an
+@var{optname} is not a valid shell option.
+@end table
+
+@node Special Builtins
+@section Special Builtins
+@cindex special builtin
+
+For historical reasons, the @sc{posix} standard has classified
+several builtin commands as @emph{special}.
+When Bash is executing in @sc{posix} mode, the special builtins
+differ from other builtin commands in three respects:
+
+@enumerate
+@item
+Special builtins are found before shell functions during command lookup.
+
+@item
+If a special builtin returns an error status, a non-interactive shell exits.
+
+@item
+Assignment statements preceding the command stay in effect in the shell
+environment after the command completes.
+@end enumerate
+
+When Bash is not executing in @sc{posix} mode, these builtins behave no
+differently than the rest of the Bash builtin commands.
+The Bash @sc{posix} mode is described in @ref{Bash POSIX Mode}.
+
+These are the @sc{posix} special builtins:
+@example
+@w{break : . continue eval exec exit export readonly return set}
+@w{shift trap unset}
+@end example
+
+@node Shell Variables
+@chapter Shell Variables
+
+@menu
+* Bourne Shell Variables:: Variables which Bash uses in the same way
+ as the Bourne Shell.
+* Bash Variables:: List of variables that exist in Bash.
+@end menu
+
+This chapter describes the shell variables that Bash uses.
+Bash automatically assigns default values to a number of variables.
+
+@node Bourne Shell Variables
+@section Bourne Shell Variables
+
+Bash uses certain shell variables in the same way as the Bourne shell.
+In some cases, Bash assigns a default value to the variable.
+
+@vtable @code
+
+@item CDPATH
+A colon-separated list of directories used as a search path for
+the @code{cd} builtin command.
+
+@item HOME
+The current user's home directory; the default for the @code{cd} builtin
+command.
+The value of this variable is also used by tilde expansion
+(@pxref{Tilde Expansion}).
+
+@item IFS
+A list of characters that separate fields; used when the shell splits
+words as part of expansion.
+
+@item MAIL
+If this parameter is set to a filename or directory name
+and the @env{MAILPATH} variable
+is not set, Bash informs the user of the arrival of mail in
+the specified file or Maildir-format directory.
+
+@item MAILPATH
+A colon-separated list of filenames which the shell periodically checks
+for new mail.
+Each list entry can specify the message that is printed when new mail
+arrives in the mail file by separating the filename from the message with
+a @samp{?}.
+When used in the text of the message, @code{$_} expands to the name of
+the current mail file.
+
+@item OPTARG
+The value of the last option argument processed by the @code{getopts} builtin.
+
+@item OPTIND
+The index of the last option argument processed by the @code{getopts} builtin.
+
+@item PATH
+A colon-separated list of directories in which the shell looks for
+commands.
+A zero-length (null) directory name in the value of @code{PATH} indicates the
+current directory.
+A null directory name may appear as two adjacent colons, or as an initial
+or trailing colon.
+
+
+@item PS1
+The primary prompt string. The default value is @samp{\s-\v\$ }.
+@xref{Controlling the Prompt}, for the complete list of escape
+sequences that are expanded before @env{PS1} is displayed.
+
+@item PS2
+The secondary prompt string. The default value is @samp{> }.
+
+@end vtable
+
+@node Bash Variables
+@section Bash Variables
+
+These variables are set or used by Bash, but other shells
+do not normally treat them specially.
+
+A few variables used by Bash are described in different chapters:
+variables for controlling the job control facilities
+(@pxref{Job Control Variables}).
+
+@vtable @code
+
+@item BASH
+The full pathname used to execute the current instance of Bash.
+
+@item BASHOPTS
+A colon-separated list of enabled shell options. Each word in
+the list is a valid argument for the @option{-s} option to the
+@code{shopt} builtin command (@pxref{The Shopt Builtin}).
+The options appearing in @env{BASHOPTS} are those reported
+as @samp{on} by @samp{shopt}.
+If this variable is in the environment when Bash
+starts up, each shell option in the list will be enabled before
+reading any startup files. This variable is readonly.
+
+@item BASHPID
+Expands to the process ID of the current Bash process.
+This differs from @code{$$} under certain circumstances, such as subshells
+that do not require Bash to be re-initialized.
+
+@item BASH_ALIASES
+An associative array variable whose members correspond to the internal
+list of aliases as maintained by the @code{alias} builtin.
+(@pxref{Bourne Shell Builtins}).
+Elements added to this array appear in the alias list; unsetting array
+elements cause aliases to be removed from the alias list.
+
+@item BASH_ARGC
+An array variable whose values are the number of parameters in each
+frame of the current bash execution call stack. The number of
+parameters to the current subroutine (shell function or script executed
+with @code{.} or @code{source}) is at the top of the stack. When a
+subroutine is executed, the number of parameters passed is pushed onto
+@code{BASH_ARGC}.
+The shell sets @code{BASH_ARGC} only when in extended debugging mode
+(see @ref{The Shopt Builtin}
+for a description of the @code{extdebug} option to the @code{shopt}
+builtin).
+
+@item BASH_ARGV
+An array variable containing all of the parameters in the current bash
+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 @code{BASH_ARGV}.
+The shell sets @code{BASH_ARGV} only when in extended debugging mode
+(see @ref{The Shopt Builtin}
+for a description of the @code{extdebug} option to the @code{shopt}
+builtin).
+
+@item BASH_CMDS
+An associative array variable whose members correspond to the internal
+hash table of commands as maintained by the @code{hash} builtin
+(@pxref{Bourne Shell Builtins}).
+Elements added to this array appear in the hash table; unsetting array
+elements cause commands to be removed from the hash table.
+
+@item 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.
+
+@item BASH_COMPAT
+The value is used to set the shell's compatibility level.
+@xref{The Shopt Builtin}, 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 @code{BASH_COMPAT} is unset or set to the empty string, the compatibility
+level is set to the default for the current version.
+If @code{BASH_COMPAT} 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 @code{shopt} builtin described above (for example,
+@var{compat42} means that 4.2 and 42 are valid values).
+The current version is also a valid value.
+
+@item BASH_ENV
+If this variable is set when Bash is invoked to execute a shell
+script, its value is expanded and used as the name of a startup file
+to read before executing the script. @xref{Bash Startup Files}.
+
+@item BASH_EXECUTION_STRING
+The command argument to the @option{-c} invocation option.
+
+@item BASH_LINENO
+An array variable whose members are the line numbers in source files
+where each corresponding member of @var{FUNCNAME} was invoked.
+@code{$@{BASH_LINENO[$i]@}} is the line number in the source file
+(@code{$@{BASH_SOURCE[$i+1]@}}) where
+@code{$@{FUNCNAME[$i]@}} was called (or @code{$@{BASH_LINENO[$i-1]@}} if
+referenced within another shell function).
+Use @code{LINENO} to obtain the current line number.
+
+@item BASH_REMATCH
+An array variable whose members are assigned by the @samp{=~} binary
+operator to the @code{[[} conditional command
+(@pxref{Conditional Constructs}).
+The element with index 0 is the portion of the string
+matching the entire regular expression.
+The element with index @var{n} is the portion of the
+string matching the @var{n}th parenthesized subexpression.
+This variable is read-only.
+
+@item BASH_SOURCE
+An array variable whose members are the source filenames where the
+corresponding shell function names in the @code{FUNCNAME} array
+variable are defined.
+The shell function @code{$@{FUNCNAME[$i]@}} is defined in the file
+@code{$@{BASH_SOURCE[$i]@}} and called from @code{$@{BASH_SOURCE[$i+1]@}}
+
+@item BASH_SUBSHELL
+Incremented by one within each subshell or subshell environment when
+the shell begins executing in that environment.
+The initial value is 0.
+
+@item BASH_VERSINFO
+A readonly array variable (@pxref{Arrays})
+whose members hold version information for this instance of Bash.
+The values assigned to the array members are as follows:
+
+@table @code
+
+@item BASH_VERSINFO[0]
+The major version number (the @var{release}).
+
+@item BASH_VERSINFO[1]
+The minor version number (the @var{version}).
+
+@item BASH_VERSINFO[2]
+The patch level.
+
+@item BASH_VERSINFO[3]
+The build version.
+
+@item BASH_VERSINFO[4]
+The release status (e.g., @var{beta1}).
+
+@item BASH_VERSINFO[5]
+The value of @env{MACHTYPE}.
+@end table
+
+@item BASH_VERSION
+The version number of the current instance of Bash.
+
+@item BASH_XTRACEFD
+If set to an integer corresponding to a valid file descriptor, Bash
+will write the trace output generated when @samp{set -x}
+is enabled to that file descriptor.
+This allows tracing output to be separated from diagnostic and error
+messages.
+The file descriptor is closed when @code{BASH_XTRACEFD} is unset or assigned
+a new value.
+Unsetting @code{BASH_XTRACEFD} or assigning it the empty string causes the
+trace output to be sent to the standard error.
+Note that setting @code{BASH_XTRACEFD} to 2 (the standard error file
+descriptor) and then unsetting it will result in the standard error
+being closed.
+
+@item 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 @sc{posix}-mandated
+minimum, and there is a maximum value (currently 8192) that this may
+not exceed.
+The minimum value is system-dependent.
+
+@item COLUMNS
+Used by the @code{select} command to determine the terminal width
+when printing selection lists.
+Automatically set if the @code{checkwinsize} option is enabled
+(@pxref{The Shopt Builtin}), or in an interactive shell upon receipt of a
+@code{SIGWINCH}.
+
+@item COMP_CWORD
+An index into @env{$@{COMP_WORDS@}} of the word containing the current
+cursor position.
+This variable is available only in shell functions invoked by the
+programmable completion facilities (@pxref{Programmable Completion}).
+
+@item COMP_LINE
+The current command line.
+This variable is available only in shell functions and external
+commands invoked by the
+programmable completion facilities (@pxref{Programmable Completion}).
+
+@item COMP_POINT
+The index of the current cursor position relative to the beginning of
+the current command.
+If the current cursor position is at the end of the current command,
+the value of this variable is equal to @code{$@{#COMP_LINE@}}.
+This variable is available only in shell functions and external
+commands invoked by the
+programmable completion facilities (@pxref{Programmable Completion}).
+
+@item COMP_TYPE
+Set to an integer value corresponding to the type of completion attempted
+that caused a completion function to be called:
+@var{TAB}, for normal completion,
+@samp{?}, for listing completions after successive tabs,
+@samp{!}, for listing alternatives on partial word completion,
+@samp{@@}, to list completions if the word is not unmodified,
+or
+@samp{%}, for menu completion.
+This variable is available only in shell functions and external
+commands invoked by the
+programmable completion facilities (@pxref{Programmable Completion}).
+
+@item COMP_KEY
+The key (or final key of a key sequence) used to invoke the current
+completion function.
+
+@item COMP_WORDBREAKS
+The set of characters that the Readline library treats as word
+separators when performing word completion.
+If @code{COMP_WORDBREAKS} is unset, it loses its special properties,
+even if it is subsequently reset.
+
+@item COMP_WORDS
+An array variable consisting of the individual
+words in the current command line.
+The line is split into words as Readline would split it, using
+@code{COMP_WORDBREAKS} as described above.
+This variable is available only in shell functions invoked by the
+programmable completion facilities (@pxref{Programmable Completion}).
+
+@item COMPREPLY
+An array variable from which Bash reads the possible completions
+generated by a shell function invoked by the programmable completion
+facility (@pxref{Programmable Completion}).
+Each array element contains one possible completion.
+
+@item COPROC
+An array variable created to hold the file descriptors
+for output from and input to an unnamed coprocess (@pxref{Coprocesses}).
+
+@item DIRSTACK
+An array variable containing the current contents of the directory stack.
+Directories appear in the stack in the order they are displayed by the
+@code{dirs} builtin.
+Assigning to members of this array variable may be used to modify
+directories already in the stack, but the @code{pushd} and @code{popd}
+builtins must be used to add and remove directories.
+Assignment to this variable will not change the current directory.
+If @env{DIRSTACK} is unset, it loses its special properties, even if
+it is subsequently reset.
+
+@item EMACS
+If Bash finds this variable in the environment when the shell
+starts with value @samp{t}, it assumes that the shell is running in an
+Emacs shell buffer and disables line editing.
+
+@item ENV
+Similar to @code{BASH_ENV}; used when the shell is invoked in
+@sc{posix} Mode (@pxref{Bash POSIX Mode}).
+
+@item EUID
+The numeric effective user id of the current user. This variable
+is readonly.
+
+@item FCEDIT
+The editor used as a default by the @option{-e} option to the @code{fc}
+builtin command.
+
+@item FIGNORE
+A colon-separated list of suffixes to ignore when performing
+filename completion.
+A filename whose suffix matches one of the entries in
+@env{FIGNORE}
+is excluded from the list of matched filenames. A sample
+value is @samp{.o:~}
+
+@item 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 @code{"main"}.
+This variable exists only when a shell function is executing.
+Assignments to @env{FUNCNAME} have no effect and return an error status.
+If @env{FUNCNAME} is unset, it loses its special properties, even if
+it is subsequently reset.
+
+This variable can be used with @code{BASH_LINENO} and @code{BASH_SOURCE}.
+Each element of @code{FUNCNAME} has corresponding elements in
+@code{BASH_LINENO} and @code{BASH_SOURCE} to describe the call stack.
+For instance, @code{$@{FUNCNAME[$i]@}} was called from the file
+@code{$@{BASH_SOURCE[$i+1]@}} at line number @code{$@{BASH_LINENO[$i]@}}.
+The @code{caller} builtin displays the current call stack using this
+information.
+
+@item 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.
+
+@item GLOBIGNORE
+A colon-separated list of patterns defining the set of filenames to
+be ignored by filename expansion.
+If a filename matched by a filename expansion pattern also matches one
+of the patterns in @env{GLOBIGNORE}, it is removed from the list
+of matches.
+
+@item GROUPS
+An array variable containing the list of groups of which the current
+user is a member.
+Assignments to @env{GROUPS} have no effect and return an error status.
+If @env{GROUPS} is unset, it loses its special properties, even if it is
+subsequently reset.
+
+@item histchars
+Up to three characters which control history expansion, quick
+substitution, and tokenization (@pxref{History Interaction}).
+The first character is the
+@var{history expansion} character, that is, the character which signifies the
+start of a history expansion, normally @samp{!}. The second character is the
+character which signifies `quick substitution' when seen as the first
+character on a line, normally @samp{^}. 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, usually @samp{#}. 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.
+
+@item HISTCMD
+The history number, or index in the history list, of the current
+command. If @env{HISTCMD} is unset, it loses its special properties,
+even if it is subsequently reset.
+
+@item HISTCONTROL
+A colon-separated list of values controlling how commands are saved on
+the history list.
+If the list of values includes @samp{ignorespace}, lines which begin
+with a space character are not saved in the history list.
+A value of @samp{ignoredups} causes lines which match the previous
+history entry to not be saved.
+A value of @samp{ignoreboth} is shorthand for
+@samp{ignorespace} and @samp{ignoredups}.
+A value of @samp{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 @env{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 @env{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
+@env{HISTCONTROL}.
+
+@item HISTFILE
+The name of the file to which the command history is saved. The
+default value is @file{~/.bash_history}.
+
+@item 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 @env{HISTSIZE}
+after reading any startup files.
+
+@item 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 @samp{*} is appended). Each pattern is tested
+against the line after the checks specified by @env{HISTCONTROL}
+are applied. In addition to the normal shell pattern matching
+characters, @samp{&} matches the previous history line. @samp{&}
+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
+@env{HISTIGNORE}.
+
+@env{HISTIGNORE} subsumes the function of @env{HISTCONTROL}. A
+pattern of @samp{&} is identical to @code{ignoredups}, and a
+pattern of @samp{[ ]*} is identical to @code{ignorespace}.
+Combining these two patterns, separating them with a colon,
+provides the functionality of @code{ignoreboth}.
+
+@item HISTSIZE
+The maximum number of commands to remember on the history list.
+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.
+
+@item HISTTIMEFORMAT
+If this variable is set and not null, its value is used as a format string
+for @var{strftime} to print the time stamp associated with each history
+entry displayed by the @code{history} 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.
+
+@item HOSTFILE
+Contains the name of a file in the same format as @file{/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, Bash adds the contents of the new file to the
+existing list.
+If @env{HOSTFILE} is set, but has no value, or does not name a readable file,
+Bash attempts to read
+@file{/etc/hosts} to obtain the list of possible hostname completions.
+When @env{HOSTFILE} is unset, the hostname list is cleared.
+
+@item HOSTNAME
+The name of the current host.
+
+@item HOSTTYPE
+A string describing the machine Bash is running on.
+
+@item IGNOREEOF
+Controls the action of the shell on receipt of an @code{EOF} character
+as the sole input. If set, the value denotes the number
+of consecutive @code{EOF} characters that can be read as the
+first character on an input line
+before the shell will exit. If the variable exists but does not
+have a numeric value (or has no value) then the default is 10.
+If the variable does not exist, then @code{EOF} signifies the end of
+input to the shell. This is only in effect for interactive shells.
+
+@item INPUTRC
+The name of the Readline initialization file, overriding the default
+of @file{~/.inputrc}.
+
+@item LANG
+Used to determine the locale category for any category not specifically
+selected with a variable starting with @code{LC_}.
+
+@item LC_ALL
+This variable overrides the value of @env{LANG} and any other
+@code{LC_} variable specifying a locale category.
+
+@item LC_COLLATE
+This variable determines the collation order used when sorting the
+results of filename expansion, and
+determines the behavior of range expressions, equivalence classes,
+and collating sequences within filename expansion and pattern matching
+(@pxref{Filename Expansion}).
+
+@item LC_CTYPE
+This variable determines the interpretation of characters and the
+behavior of character classes within filename expansion and pattern
+matching (@pxref{Filename Expansion}).
+
+@item LC_MESSAGES
+This variable determines the locale used to translate double-quoted
+strings preceded by a @samp{$} (@pxref{Locale Translation}).
+
+@item LC_NUMERIC
+This variable determines the locale category used for number formatting.
+
+@item LINENO
+The line number in the script or shell function currently executing.
+
+@item LINES
+Used by the @code{select} command to determine the column length
+for printing selection lists.
+Automatically set if the @code{checkwinsize} option is enabled
+(@pxref{The Shopt Builtin}), or in an interactive shell upon receipt of a
+@code{SIGWINCH}.
+
+@item MACHTYPE
+A string that fully describes the system type on which Bash
+is executing, in the standard @sc{gnu} @var{cpu-company-system} format.
+
+@item MAILCHECK
+How often (in seconds) that the shell should check for mail in the
+files specified in the @env{MAILPATH} or @env{MAIL} variables.
+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.
+
+@item MAPFILE
+An array variable created to hold the text read by the
+@code{mapfile} builtin when no variable name is supplied.
+
+@item OLDPWD
+The previous working directory as set by the @code{cd} builtin.
+
+@item OPTERR
+If set to the value 1, Bash displays error messages
+generated by the @code{getopts} builtin command.
+
+@item OSTYPE
+A string describing the operating system Bash is running on.
+
+@item PIPESTATUS
+An array variable (@pxref{Arrays})
+containing a list of exit status values from the processes
+in the most-recently-executed foreground pipeline (which may
+contain only a single command).
+
+@item POSIXLY_CORRECT
+If this variable is in the environment when Bash starts, the shell
+enters @sc{posix} mode (@pxref{Bash POSIX Mode}) before reading the
+startup files, as if the @option{--posix} invocation option had been supplied.
+If it is set while the shell is running, Bash enables @sc{posix} mode,
+as if the command
+@example
+@code{set -o posix}
+@end example
+@noindent
+had been executed.
+
+@item PPID
+The process @sc{id} of the shell's parent process. This variable
+is readonly.
+
+@item PROMPT_COMMAND
+If set, the value is interpreted as a command to execute
+before the printing of each primary prompt (@env{$PS1}).
+
+@item 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 @code{\w} and
+@code{\W} prompt string escapes (@pxref{Controlling the Prompt}).
+Characters removed are replaced with an ellipsis.
+
+@item PS3
+The value of this variable is used as the prompt for the
+@code{select} command. If this variable is not set, the
+@code{select} command prompts with @samp{#? }
+
+@item PS4
+The value is the prompt printed before the command line is echoed
+when the @option{-x} option is set (@pxref{The Set Builtin}).
+The first character of @env{PS4} is replicated multiple times, as
+necessary, to indicate multiple levels of indirection.
+The default is @samp{+ }.
+
+@item PWD
+The current working directory as set by the @code{cd} builtin.
+
+@item RANDOM
+Each time this parameter is referenced, a random integer
+between 0 and 32767 is generated. Assigning a value to this
+variable seeds the random number generator.
+
+@item READLINE_LINE
+The contents of the Readline line buffer, for use
+with @samp{bind -x} (@pxref{Bash Builtins}).
+
+@item READLINE_POINT
+The position of the insertion point in the Readline line buffer, for use
+with @samp{bind -x} (@pxref{Bash Builtins}).
+
+@item REPLY
+The default variable for the @code{read} builtin.
+
+@item SECONDS
+This variable expands to the number of seconds since the
+shell was started. Assignment to this variable resets
+the count to the value assigned, and the expanded value
+becomes the value assigned plus the number of seconds
+since the assignment.
+
+@item SHELL
+The full pathname to the shell is kept in this environment variable.
+If it is not set when the shell starts,
+Bash assigns to it the full pathname of the current user's login shell.
+
+@item SHELLOPTS
+A colon-separated list of enabled shell options. Each word in
+the list is a valid argument for the @option{-o} option to the
+@code{set} builtin command (@pxref{The Set Builtin}).
+The options appearing in @env{SHELLOPTS} are those reported
+as @samp{on} by @samp{set -o}.
+If this variable is in the environment when Bash
+starts up, each shell option in the list will be enabled before
+reading any startup files. This variable is readonly.
+
+@item SHLVL
+Incremented by one each time a new instance of Bash is started. This is
+intended to be a count of how deeply your Bash shells are nested.
+
+@item TIMEFORMAT
+The value of this parameter is used as a format string specifying
+how the timing information for pipelines prefixed with the @code{time}
+reserved word should be displayed.
+The @samp{%} 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.
+
+@table @code
+
+@item %%
+A literal @samp{%}.
+
+@item %[@var{p}][l]R
+The elapsed time in seconds.
+
+@item %[@var{p}][l]U
+The number of CPU seconds spent in user mode.
+
+@item %[@var{p}][l]S
+The number of CPU seconds spent in system mode.
+
+@item %P
+The CPU percentage, computed as (%U + %S) / %R.
+@end table
+
+The optional @var{p} is a digit specifying the precision, 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 @var{p} greater than 3 are changed to 3.
+If @var{p} is not specified, the value 3 is used.
+
+The optional @code{l} specifies a longer format, including minutes, of
+the form @var{MM}m@var{SS}.@var{FF}s.
+The value of @var{p} determines whether or not the fraction is included.
+
+If this variable is not set, Bash acts as if it had the value
+@example
+@code{$'\nreal\t%3lR\nuser\t%3lU\nsys\t%3lS'}
+@end example
+If the value is null, no timing information is displayed.
+A trailing newline is added when the format string is displayed.
+
+@item TMOUT
+If set to a value greater than zero, @code{TMOUT} is treated as the
+default timeout for the @code{read} builtin (@pxref{Bash Builtins}).
+The @code{select} command (@pxref{Conditional Constructs}) terminates
+if input does not arrive after @code{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.
+Bash
+terminates after waiting for that number of seconds if a complete
+line of input does not arrive.
+
+@item TMPDIR
+If set, Bash uses its value as the name of a directory in which
+Bash creates temporary files for the shell's use.
+
+@item UID
+The numeric real user id of the current user. This variable is readonly.
+
+@end vtable
+
+@node Bash Features
+@chapter Bash Features
+
+This chapter describes features unique to Bash.
+
+@menu
+* Invoking Bash:: Command line options that you can give
+ to Bash.
+* Bash Startup Files:: When and how Bash executes scripts.
+* Interactive Shells:: What an interactive shell is.
+* Bash Conditional Expressions:: Primitives used in composing expressions for
+ the @code{test} builtin.
+* Shell Arithmetic:: Arithmetic on shell variables.
+* Aliases:: Substituting one command for another.
+* Arrays:: Array Variables.
+* The Directory Stack:: History of visited directories.
+* Controlling the Prompt:: Customizing the various prompt strings.
+* The Restricted Shell:: A more controlled mode of shell execution.
+* Bash POSIX Mode:: Making Bash behave more closely to what
+ the POSIX standard specifies.
+@end menu
+
+@node Invoking Bash
+@section Invoking Bash
+
+@example
+bash [long-opt] [-ir] [-abefhkmnptuvxdBCDHP] [-o @var{option}] [-O @var{shopt_option}] [@var{argument} @dots{}]
+bash [long-opt] [-abefhkmnptuvxdBCDHP] [-o @var{option}] [-O @var{shopt_option}] -c @var{string} [@var{argument} @dots{}]
+bash [long-opt] -s [-abefhkmnptuvxdBCDHP] [-o @var{option}] [-O @var{shopt_option}] [@var{argument} @dots{}]
+@end example
+
+All of the single-character options used with the @code{set} builtin
+(@pxref{The Set Builtin}) can be used as options when the shell is invoked.
+In addition, there are several multi-character
+options that you can use. These options must appear on the command
+line before the single-character options to be recognized.
+
+@table @code
+@item --debugger
+Arrange for the debugger profile to be executed before the shell
+starts. Turns on extended debugging mode (see @ref{The Shopt Builtin}
+for a description of the @code{extdebug} option to the @code{shopt}
+builtin).
+
+@item --dump-po-strings
+A list of all double-quoted strings preceded by @samp{$}
+is printed on the standard output
+in the @sc{gnu} @code{gettext} PO (portable object) file format.
+Equivalent to @option{-D} except for the output format.
+
+@item --dump-strings
+Equivalent to @option{-D}.
+
+@item --help
+Display a usage message on standard output and exit successfully.
+
+@item --init-file @var{filename}
+@itemx --rcfile @var{filename}
+Execute commands from @var{filename} (instead of @file{~/.bashrc})
+in an interactive shell.
+
+@item --login
+Equivalent to @option{-l}.
+
+@item --noediting
+Do not use the @sc{gnu} Readline library (@pxref{Command Line Editing})
+to read command lines when the shell is interactive.
+
+@item --noprofile
+Don't load the system-wide startup file @file{/etc/profile}
+or any of the personal initialization files
+@file{~/.bash_profile}, @file{~/.bash_login}, or @file{~/.profile}
+when Bash is invoked as a login shell.
+
+@item --norc
+Don't read the @file{~/.bashrc} initialization file in an
+interactive shell. This is on by default if the shell is
+invoked as @code{sh}.
+
+@item --posix
+Change the behavior of Bash where the default operation differs
+from the @sc{posix} standard to match the standard. This
+is intended to make Bash behave as a strict superset of that
+standard. @xref{Bash POSIX Mode}, for a description of the Bash
+@sc{posix} mode.
+
+@item --restricted
+Make the shell a restricted shell (@pxref{The Restricted Shell}).
+
+@item --verbose
+Equivalent to @option{-v}. Print shell input lines as they're read.
+
+@item --version
+Show version information for this instance of
+Bash on the standard output and exit successfully.
+@end table
+
+There are several single-character options that may be supplied at
+invocation which are not available with the @code{set} builtin.
+
+@table @code
+@item -c
+Read and execute commands from the first non-option @var{argument}
+after processing the options, then exit.
+Any remaining arguments are assigned to the
+positional parameters, starting with @code{$0}.
+
+@item -i
+Force the shell to run interactively. Interactive shells are
+described in @ref{Interactive Shells}.
+
+@item -l
+Make this shell act as if it had been directly invoked by login.
+When the shell is interactive, this is equivalent to starting a
+login shell with @samp{exec -l bash}.
+When the shell is not interactive, the login shell startup files will
+be executed.
+@samp{exec bash -l} or @samp{exec bash --login}
+will replace the current shell with a Bash login shell.
+@xref{Bash Startup Files}, for a description of the special behavior
+of a login shell.
+
+@item -r
+Make the shell a restricted shell (@pxref{The Restricted Shell}).
+
+@item -s
+If this option is present, or if no arguments remain after option
+processing, then commands are read from the standard input.
+This option allows the positional parameters to be set
+when invoking an interactive shell.
+
+@item -D
+A list of all double-quoted strings preceded by @samp{$}
+is printed on the standard output.
+These are the strings that
+are subject to language translation when the current locale
+is not @code{C} or @code{POSIX} (@pxref{Locale Translation}).
+This implies the @option{-n} option; no commands will be executed.
+
+@item [-+]O [@var{shopt_option}]
+@var{shopt_option} is one of the shell options accepted by the
+@code{shopt} builtin (@pxref{The Shopt Builtin}).
+If @var{shopt_option} is present, @option{-O} sets the value of that option;
+@option{+O} unsets it.
+If @var{shopt_option} is not supplied, the names and values of the shell
+options accepted by @code{shopt} are printed on the standard output.
+If the invocation option is @option{+O}, the output is displayed in a format
+that may be reused as input.
+
+@item --
+A @code{--} signals the end of options and disables further option
+processing.
+Any arguments after the @code{--} are treated as filenames and arguments.
+@end table
+
+@cindex login shell
+A @emph{login} shell is one whose first character of argument zero is
+@samp{-}, or one invoked with the @option{--login} option.
+
+@cindex interactive shell
+An @emph{interactive} shell is one started without non-option arguments,
+unless @option{-s} is specified,
+without specifying the @option{-c} option, and whose input and output are both
+connected to terminals (as determined by @code{isatty(3)}), or one
+started with the @option{-i} option. @xref{Interactive Shells}, for more
+information.
+
+If arguments remain after option processing, and neither the
+@option{-c} nor the @option{-s}
+option has been supplied, the first argument is assumed to
+be the name of a file containing shell commands (@pxref{Shell Scripts}).
+When Bash is invoked in this fashion, @code{$0}
+is set to the name of the file, and the positional parameters
+are set to the remaining arguments.
+Bash reads and executes commands from this file, then exits.
+Bash'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.
+
+@node Bash Startup Files
+@section Bash Startup Files
+@cindex startup files
+
+This section describes how Bash executes its startup files.
+If any of the files exist but cannot be read, Bash reports an error.
+Tildes are expanded in filenames as described above under
+Tilde Expansion (@pxref{Tilde Expansion}).
+
+Interactive shells are described in @ref{Interactive Shells}.
+
+@subsubheading Invoked as an interactive login shell, or with @option{--login}
+
+When Bash is invoked as an interactive login shell, or as a
+non-interactive shell with the @option{--login} option, it first reads and
+executes commands from the file @file{/etc/profile}, if that file exists.
+After reading that file, it looks for @file{~/.bash_profile},
+@file{~/.bash_login}, and @file{~/.profile}, in that order, and reads
+and executes commands from the first one that exists and is readable.
+The @option{--noprofile} option may be used when the shell is started to
+inhibit this behavior.
+
+When a login shell exits, Bash reads and executes commands from
+the file @file{~/.bash_logout}, if it exists.
+
+@subsubheading Invoked as an interactive non-login shell
+
+When an interactive shell that is not a login shell is started, Bash
+reads and executes commands from @file{~/.bashrc}, if that file exists.
+This may be inhibited by using the @option{--norc} option.
+The @option{--rcfile @var{file}} option will force Bash to read and
+execute commands from @var{file} instead of @file{~/.bashrc}.
+
+So, typically, your @file{~/.bash_profile} contains the line
+@example
+@code{if [ -f ~/.bashrc ]; then . ~/.bashrc; fi}
+@end example
+@noindent
+after (or before) any login-specific initializations.
+
+@subsubheading Invoked non-interactively
+
+When Bash is started non-interactively, to run a shell script,
+for example, it looks for the variable @env{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. Bash behaves as if the
+following command were executed:
+@example
+@code{if [ -n "$BASH_ENV" ]; then . "$BASH_ENV"; fi}
+@end example
+@noindent
+but the value of the @env{PATH} variable is not used to search for the
+filename.
+
+As noted above, if a non-interactive shell is invoked with the
+@option{--login} option, Bash attempts to read and execute commands from the
+login shell startup files.
+
+@subsubheading Invoked with name @code{sh}
+
+If Bash is invoked with the name @code{sh}, it tries to mimic the
+startup behavior of historical versions of @code{sh} as closely as
+possible, while conforming to the @sc{posix} standard as well.
+
+When invoked as an interactive login shell, or as a non-interactive
+shell with the @option{--login} option, it first attempts to read
+and execute commands from @file{/etc/profile} and @file{~/.profile}, in
+that order.
+The @option{--noprofile} option may be used to inhibit this behavior.
+When invoked as an interactive shell with the name @code{sh}, Bash
+looks for the variable @env{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 @code{sh} does not attempt to read and execute
+commands from any other startup files, the @option{--rcfile} option has
+no effect.
+A non-interactive shell invoked with the name @code{sh} does not attempt
+to read any other startup files.
+
+When invoked as @code{sh}, Bash enters @sc{posix} mode after
+the startup files are read.
+
+@subsubheading Invoked in @sc{posix} mode
+
+When Bash is started in @sc{posix} mode, as with the
+@option{--posix} command line option, it follows the @sc{posix} standard
+for startup files.
+In this mode, interactive shells expand the @env{ENV} variable
+and commands are read and executed from the file whose name is the
+expanded value.
+No other startup files are read.
+
+@subsubheading Invoked by remote shell daemon
+
+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 @code{rshd}, or the secure shell daemon @code{sshd}.
+If Bash determines it is being run in
+this fashion, it reads and executes commands from @file{~/.bashrc}, if that
+file exists and is readable.
+It will not do this if invoked as @code{sh}.
+The @option{--norc} option may be used to inhibit this behavior, and the
+@option{--rcfile} option may be used to force another file to be read, but
+@code{rshd} does not generally invoke the shell with those options or
+allow them to be specified.
+
+@subsubheading Invoked with unequal effective and real @sc{uid/gid}s
+
+If Bash is started with the effective user (group) id not equal to the
+real user (group) id, and the @option{-p} option is not supplied, no startup
+files are read, shell functions are not inherited from the environment,
+the @env{SHELLOPTS}, @env{BASHOPTS}, @env{CDPATH}, and @env{GLOBIGNORE}
+variables, if they appear in the environment, are ignored, and the effective
+user id is set to the real user id.
+If the @option{-p} option is supplied at invocation, the startup behavior is
+the same, but the effective user id is not reset.
+
+@node Interactive Shells
+@section Interactive Shells
+@cindex interactive shell
+@cindex shell, interactive
+
+@menu
+* What is an Interactive Shell?:: What determines whether a shell is Interactive.
+* Is this Shell Interactive?:: How to tell if a shell is interactive.
+* Interactive Shell Behavior:: What changes in a interactive shell?
+@end menu
+
+@node What is an Interactive Shell?
+@subsection What is an Interactive Shell?
+
+An interactive shell
+is one started without non-option arguments, unless @option{-s} is
+specified, without specifying the @option{-c} option, and
+whose input and error output are both
+connected to terminals (as determined by @code{isatty(3)}),
+or one started with the @option{-i} option.
+
+An interactive shell generally reads from and writes to a user's
+terminal.
+
+The @option{-s} invocation option may be used to set the positional parameters
+when an interactive shell is started.
+
+@node Is this Shell Interactive?
+@subsection Is this Shell Interactive?
+
+To determine within a startup script whether or not Bash is
+running interactively,
+test the value of the @samp{-} special parameter.
+It contains @code{i} when the shell is interactive. For example:
+
+@example
+case "$-" in
+*i*) echo This shell is interactive ;;
+*) echo This shell is not interactive ;;
+esac
+@end example
+
+Alternatively, startup scripts may examine the variable
+@env{PS1}; it is unset in non-interactive shells, and set in
+interactive shells. Thus:
+
+@example
+if [ -z "$PS1" ]; then
+ echo This shell is not interactive
+else
+ echo This shell is interactive
+fi
+@end example
+
+@node Interactive Shell Behavior
+@subsection Interactive Shell Behavior
+
+When the shell is running interactively, it changes its behavior in
+several ways.
+
+@enumerate
+@item
+Startup files are read and executed as described in @ref{Bash Startup Files}.
+
+@item
+Job Control (@pxref{Job Control}) is enabled by default. When job
+control is in effect, Bash ignores the keyboard-generated job control
+signals @code{SIGTTIN}, @code{SIGTTOU}, and @code{SIGTSTP}.
+
+@item
+Bash expands and displays @env{PS1} before reading the first line
+of a command, and expands and displays @env{PS2} before reading the
+second and subsequent lines of a multi-line command.
+
+@item
+Bash executes the value of the @env{PROMPT_COMMAND} variable as a command
+before printing the primary prompt, @env{$PS1}
+(@pxref{Bash Variables}).
+
+@item
+Readline (@pxref{Command Line Editing}) is used to read commands from
+the user's terminal.
+
+@item
+Bash inspects the value of the @code{ignoreeof} option to @code{set -o}
+instead of exiting immediately when it receives an @code{EOF} on its
+standard input when reading a command (@pxref{The Set Builtin}).
+
+@item
+Command history (@pxref{Bash History Facilities})
+and history expansion (@pxref{History Interaction})
+are enabled by default.
+Bash will save the command history to the file named by @env{$HISTFILE}
+when a shell with history enabled exits.
+
+@item
+Alias expansion (@pxref{Aliases}) is performed by default.
+
+@item
+In the absence of any traps, Bash ignores @code{SIGTERM}
+(@pxref{Signals}).
+
+@item
+In the absence of any traps, @code{SIGINT} is caught and handled
+((@pxref{Signals}).
+@code{SIGINT} will interrupt some shell builtins.
+
+@item
+An interactive login shell sends a @code{SIGHUP} to all jobs on exit
+if the @code{huponexit} shell option has been enabled (@pxref{Signals}).
+
+@item
+The @option{-n} invocation option is ignored, and @samp{set -n} has
+no effect (@pxref{The Set Builtin}).
+
+@item
+Bash will check for mail periodically, depending on the values of the
+@env{MAIL}, @env{MAILPATH}, and @env{MAILCHECK} shell variables
+(@pxref{Bash Variables}).
+
+@item
+Expansion errors due to references to unbound shell variables after
+@samp{set -u} has been enabled will not cause the shell to exit
+(@pxref{The Set Builtin}).
+
+@item
+The shell will not exit on expansion errors caused by @var{var} being unset
+or null in @code{$@{@var{var}:?@var{word}@}} expansions
+(@pxref{Shell Parameter Expansion}).
+
+@item
+Redirection errors encountered by shell builtins will not cause the
+shell to exit.
+
+@item
+When running in @sc{posix} mode, a special builtin returning an error
+status will not cause the shell to exit (@pxref{Bash POSIX Mode}).
+
+@item
+A failed @code{exec} will not cause the shell to exit
+(@pxref{Bourne Shell Builtins}).
+
+@item
+Parser syntax errors will not cause the shell to exit.
+
+@item
+Simple spelling correction for directory arguments to the @code{cd}
+builtin is enabled by default (see the description of the @code{cdspell}
+option to the @code{shopt} builtin in @ref{The Shopt Builtin}).
+
+@item
+The shell will check the value of the @env{TMOUT} variable and exit
+if a command is not read within the specified number of seconds after
+printing @env{$PS1} (@pxref{Bash Variables}).
+
+@end enumerate
+
+@node Bash Conditional Expressions
+@section Bash Conditional Expressions
+@cindex expressions, conditional
+
+Conditional expressions are used by the @code{[[} compound command
+and the @code{test} and @code{[} builtin commands.
+
+Expressions may be unary or binary.
+Unary expressions are often used to examine the status of a file.
+There are string operators and numeric comparison operators as well.
+If the @var{file} argument to one of the primaries is of the form
+@file{/dev/fd/@var{N}}, then file descriptor @var{N} is checked.
+If the @var{file} argument to one of the primaries is one of
+@file{/dev/stdin}, @file{/dev/stdout}, or @file{/dev/stderr}, file
+descriptor 0, 1, or 2, respectively, is checked.
+
+When used with @code{[[}, the @samp{<} and @samp{>} operators sort
+lexicographically using the current locale.
+The @code{test} command uses ASCII ordering.
+
+Unless otherwise specified, primaries that operate on files follow symbolic
+links and operate on the target of the link, rather than the link itself.
+
+@table @code
+@item -a @var{file}
+True if @var{file} exists.
+
+@item -b @var{file}
+True if @var{file} exists and is a block special file.
+
+@item -c @var{file}
+True if @var{file} exists and is a character special file.
+
+@item -d @var{file}
+True if @var{file} exists and is a directory.
+
+@item -e @var{file}
+True if @var{file} exists.
+
+@item -f @var{file}
+True if @var{file} exists and is a regular file.
+
+@item -g @var{file}
+True if @var{file} exists and its set-group-id bit is set.
+
+@item -h @var{file}
+True if @var{file} exists and is a symbolic link.
+
+@item -k @var{file}
+True if @var{file} exists and its "sticky" bit is set.
+
+@item -p @var{file}
+True if @var{file} exists and is a named pipe (FIFO).
+
+@item -r @var{file}
+True if @var{file} exists and is readable.
+
+@item -s @var{file}
+True if @var{file} exists and has a size greater than zero.
+
+@item -t @var{fd}
+True if file descriptor @var{fd} is open and refers to a terminal.
+
+@item -u @var{file}
+True if @var{file} exists and its set-user-id bit is set.
+
+@item -w @var{file}
+True if @var{file} exists and is writable.
+
+@item -x @var{file}
+True if @var{file} exists and is executable.
+
+@item -G @var{file}
+True if @var{file} exists and is owned by the effective group id.
+
+@item -L @var{file}
+True if @var{file} exists and is a symbolic link.
+
+@item -N @var{file}
+True if @var{file} exists and has been modified since it was last read.
+
+@item -O @var{file}
+True if @var{file} exists and is owned by the effective user id.
+
+@item -S @var{file}
+True if @var{file} exists and is a socket.
+
+@item @var{file1} -ef @var{file2}
+True if @var{file1} and @var{file2} refer to the same device and
+inode numbers.
+
+@item @var{file1} -nt @var{file2}
+True if @var{file1} is newer (according to modification date)
+than @var{file2}, or if @var{file1} exists and @var{file2} does not.
+
+@item @var{file1} -ot @var{file2}
+True if @var{file1} is older than @var{file2},
+or if @var{file2} exists and @var{file1} does not.
+
+@item -o @var{optname}
+True if the shell option @var{optname} is enabled.
+The list of options appears in the description of the @option{-o}
+option to the @code{set} builtin (@pxref{The Set Builtin}).
+
+@item -v @var{varname}
+True if the shell variable @var{varname} is set (has been assigned a value).
+
+@item -R @var{varname}
+True if the shell variable @var{varname} is set and is a name reference.
+
+@item -z @var{string}
+True if the length of @var{string} is zero.
+
+@item -n @var{string}
+@itemx @var{string}
+True if the length of @var{string} is non-zero.
+
+@item @var{string1} == @var{string2}
+@itemx @var{string1} = @var{string2}
+True if the strings are equal.
+When used with the @code{[[} command, this performs pattern matching as
+described above (@pxref{Conditional Constructs}).
+
+@samp{=} should be used with the @code{test} command for @sc{posix} conformance.
+
+@item @var{string1} != @var{string2}
+True if the strings are not equal.
+
+@item @var{string1} < @var{string2}
+True if @var{string1} sorts before @var{string2} lexicographically.
+
+@item @var{string1} > @var{string2}
+True if @var{string1} sorts after @var{string2} lexicographically.
+
+@item @var{arg1} OP @var{arg2}
+@code{OP} is one of
+@samp{-eq}, @samp{-ne}, @samp{-lt}, @samp{-le}, @samp{-gt}, or @samp{-ge}.
+These arithmetic binary operators return true if @var{arg1}
+is equal to, not equal to, less than, less than or equal to,
+greater than, or greater than or equal to @var{arg2},
+respectively. @var{Arg1} and @var{arg2}
+may be positive or negative integers.
+@end table
+
+@node Shell Arithmetic
+@section Shell Arithmetic
+@cindex arithmetic, shell
+@cindex shell arithmetic
+@cindex expressions, arithmetic
+@cindex evaluation, arithmetic
+@cindex arithmetic evaluation
+
+The shell allows arithmetic expressions to be evaluated, as one of
+the shell expansions or by the @code{let} and the @option{-i} option
+to the @code{declare} builtins.
+
+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.
+
+@table @code
+
+@item @var{id}++ @var{id}--
+variable post-increment and post-decrement
+
+@item ++@var{id} --@var{id}
+variable pre-increment and pre-decrement
+
+@item - +
+unary minus and plus
+
+@item ! ~
+logical and bitwise negation
+
+@item **
+exponentiation
+
+@item * / %
+multiplication, division, remainder
+
+@item + -
+addition, subtraction
+
+@item << >>
+left and right bitwise shifts
+
+@item <= >= < >
+comparison
+
+@item == !=
+equality and inequality
+
+@item &
+bitwise AND
+
+@item ^
+bitwise exclusive OR
+
+@item |
+bitwise OR
+
+@item &&
+logical AND
+
+@item ||
+logical OR
+
+@item expr ? expr : expr
+conditional operator
+
+@item = *= /= %= += -= <<= >>= &= ^= |=
+assignment
+
+@item expr1 , expr2
+comma
+@end table
+
+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
+@var{integer} attribute using @samp{declare -i} is assigned a value.
+A null value evaluates to 0.
+A shell variable need not have its @var{integer} attribute turned on
+to be used in an expression.
+
+Constants with a leading 0 are interpreted as octal numbers.
+A leading @samp{0x} or @samp{0X} denotes hexadecimal. Otherwise,
+numbers take the form [@var{base}@code{#}]@var{n}, where the optional @var{base}
+is a decimal number between 2 and 64 representing the arithmetic
+base, and @var{n} is a number in that base.
+If @var{base}@code{#} is omitted, then base 10 is used.
+When specifying @var{n},
+he digits greater than 9 are represented by the lowercase letters,
+the uppercase letters, @samp{@@}, and @samp{_}, in that order.
+If @var{base} is less than or equal to 36, lowercase and uppercase
+letters may be used interchangeably to represent numbers between 10
+and 35.
+
+Operators are evaluated in order of precedence. Sub-expressions in
+parentheses are evaluated first and may override the precedence
+rules above.
+
+@node Aliases
+@section Aliases
+@cindex alias expansion
+
+@var{Aliases} 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 @code{alias} and @code{unalias} builtin commands.
+
+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 @samp{/}, @samp{$}, @samp{`}, @samp{=} and any of the
+shell metacharacters 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 @code{ls} to @code{"ls -F"},
+for instance, and Bash does not try to recursively expand the
+replacement text.
+If the last character of the alias value is a
+@var{blank}, then the next command word following the
+alias is also checked for alias expansion.
+
+Aliases are created and listed with the @code{alias}
+command, and removed with the @code{unalias} command.
+
+There is no mechanism for using arguments in the replacement text,
+as in @code{csh}.
+If arguments are needed, a shell function should be used
+(@pxref{Shell Functions}).
+
+Aliases are not expanded when the shell is not interactive,
+unless the @code{expand_aliases} shell option is set using
+@code{shopt} (@pxref{The Shopt Builtin}).
+
+The rules concerning the definition and use of aliases are
+somewhat confusing. Bash
+always reads at least one complete line
+of input before executing any
+of the commands on that line. Aliases are expanded when a
+command is read, not when it is executed. Therefore, an
+alias definition appearing on the same line as another
+command does not take effect until the next line of input is read.
+The commands following the alias definition
+on that line are not affected by the new alias.
+This behavior is also an issue when functions are executed.
+Aliases are expanded when a function definition is read,
+not when the function is executed, because a function definition
+is itself a compound command. As a consequence, aliases
+defined in a function are not available until after that
+function is executed. To be safe, always put
+alias definitions on a separate line, and do not use @code{alias}
+in compound commands.
+
+For almost every purpose, shell functions are preferred over aliases.
+
+@node Arrays
+@section Arrays
+@cindex arrays
+
+Bash provides one-dimensional indexed and associative array variables.
+Any variable may be used as an indexed array;
+the @code{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 (@pxref{Shell Arithmetic})) and are zero-based;
+associative arrays use arbitrary strings.
+Unless otherwise noted, indexed array indices must be non-negative integers.
+
+An indexed array is created automatically if any variable is assigned to
+using the syntax
+@example
+@var{name}[@var{subscript}]=@var{value}
+@end example
+
+@noindent
+The @var{subscript}
+is treated as an arithmetic expression that must evaluate to a number.
+To explicitly declare an array, use
+@example
+declare -a @var{name}
+@end example
+@noindent
+The syntax
+@example
+declare -a @var{name}[@var{subscript}]
+@end example
+@noindent
+is also accepted; the @var{subscript} is ignored.
+
+@noindent
+Associative arrays are created using
+@example
+declare -A @var{name}.
+@end example
+
+Attributes may be
+specified for an array variable using the @code{declare} and
+@code{readonly} builtins. Each attribute applies to all members of
+an array.
+
+Arrays are assigned to using compound assignments of the form
+@example
+@var{name}=(@var{value1} @var{value2} @dots{} )
+@end example
+@noindent
+where each
+@var{value} is of the form @code{[@var{subscript}]=}@var{string}.
+Indexed array assignments do not require anything but @var{string}.
+When assigning to indexed arrays, if
+the optional subscript is 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.
+
+When assigning to an associative array, the subscript is required.
+
+This syntax is also accepted by the @code{declare}
+builtin. Individual array elements may be assigned to using the
+@code{@var{name}[@var{subscript}]=@var{value}} syntax introduced above.
+
+When assigning to an indexed array, if @var{name}
+is subscripted by a negative number, that number is
+interpreted as relative to one greater than the maximum index of
+@var{name}, so negative indices count back from the end of the
+array, and an index of -1 references the last element.
+
+Any element of an array may be referenced using
+@code{$@{@var{name}[@var{subscript}]@}}.
+The braces are required to avoid
+conflicts with the shell's filename expansion operators. If the
+@var{subscript} is @samp{@@} or @samp{*}, the word expands to all members
+of the array @var{name}. These subscripts differ only when the word
+appears within double quotes.
+If the word is double-quoted,
+@code{$@{@var{name}[*]@}} expands to a single word with
+the value of each array member separated by the first character of the
+@env{IFS} variable, and @code{$@{@var{name}[@@]@}} expands each element of
+@var{name} to a separate word. When there are no array members,
+@code{$@{@var{name}[@@]@}} 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 @samp{@@} and @samp{*}.
+@code{$@{#@var{name}[@var{subscript}]@}} expands to the length of
+@code{$@{@var{name}[@var{subscript}]@}}.
+If @var{subscript} is @samp{@@} or
+@samp{*}, the expansion is the number of elements in the array.
+Referencing an array variable without a subscript is equivalent to
+referencing with a subscript of 0.
+If the @var{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 refers to the last element.
+
+An array variable is considered set if a subscript has been assigned a
+value. The null string is a valid value.
+
+The @code{unset} builtin is used to destroy arrays.
+@code{unset @var{name}[@var{subscript}]}
+destroys the array element at index @var{subscript}.
+Negative subscripts to indexed arrays are interpreted as described above.
+Care must be taken to avoid unwanted side effects caused by filename
+expansion.
+@code{unset @var{name}}, where @var{name} is an array, removes the
+entire array. A subscript of @samp{*} or @samp{@@} also removes the
+entire array.
+
+The @code{declare}, @code{local}, and @code{readonly}
+builtins each accept a @option{-a} option to specify an indexed
+array and a @option{-A} option to specify an associative array.
+If both options are supplied, @option{-A} takes precedence.
+The @code{read} builtin accepts a @option{-a}
+option to assign a list of words read from the standard input
+to an array, and can read values from the standard input into
+individual array elements. The @code{set} and @code{declare}
+builtins display array values in a way that allows them to be
+reused as input.
+
+@node The Directory Stack
+@section The Directory Stack
+@cindex directory stack
+
+@menu
+* Directory Stack Builtins:: Bash builtin commands to manipulate
+ the directory stack.
+@end menu
+
+The directory stack is a list of recently-visited directories. The
+@code{pushd} builtin adds directories to the stack as it changes
+the current directory, and the @code{popd} builtin removes specified
+directories from the stack and changes the current directory to
+the directory removed. The @code{dirs} builtin displays the contents
+of the directory stack.
+
+The contents of the directory stack are also visible
+as the value of the @env{DIRSTACK} shell variable.
+
+@node Directory Stack Builtins
+@subsection Directory Stack Builtins
+
+@table @code
+
+@item dirs
+@btindex dirs
+@example
+dirs [-clpv] [+@var{N} | -@var{N}]
+@end example
+
+Display the list of currently remembered directories. Directories
+are added to the list with the @code{pushd} command; the
+@code{popd} command removes directories from the list.
+
+@table @code
+@item -c
+Clears the directory stack by deleting all of the elements.
+@item -l
+Produces a listing using full pathnames;
+the default listing format uses a tilde to denote the home directory.
+@item -p
+Causes @code{dirs} to print the directory stack with one entry per
+line.
+@item -v
+Causes @code{dirs} to print the directory stack with one entry per
+line, prefixing each entry with its index in the stack.
+@item +@var{N}
+Displays the @var{N}th directory (counting from the left of the
+list printed by @code{dirs} when invoked without options), starting
+with zero.
+@item -@var{N}
+Displays the @var{N}th directory (counting from the right of the
+list printed by @code{dirs} when invoked without options), starting
+with zero.
+@end table
+
+@item popd
+@btindex popd
+@example
+popd [-n] [+@var{N} | -@var{N}]
+@end example
+
+Remove the top entry from the directory stack, and @code{cd}
+to the new top directory.
+When no arguments are given, @code{popd}
+removes the top directory from the stack and
+performs a @code{cd} to the new top directory. The
+elements are numbered from 0 starting at the first directory listed with
+@code{dirs}; that is, @code{popd} is equivalent to @code{popd +0}.
+
+@table @code
+@item -n
+Suppresses the normal change of directory when removing directories
+from the stack, so that only the stack is manipulated.
+@item +@var{N}
+Removes the @var{N}th directory (counting from the left of the
+list printed by @code{dirs}), starting with zero.
+@item -@var{N}
+Removes the @var{N}th directory (counting from the right of the
+list printed by @code{dirs}), starting with zero.
+@end table
+
+@btindex pushd
+@item pushd
+@example
+pushd [-n] [@var{+N} | @var{-N} | @var{dir}]
+@end example
+
+Save the current directory on the top of the directory stack
+and then @code{cd} to @var{dir}.
+With no arguments, @code{pushd} exchanges the top two directories.
+
+@table @code
+@item -n
+Suppresses the normal change of directory when adding directories
+to the stack, so that only the stack is manipulated.
+@item +@var{N}
+Brings the @var{N}th directory (counting from the left of the
+list printed by @code{dirs}, starting with zero) to the top of
+the list by rotating the stack.
+@item -@var{N}
+Brings the @var{N}th directory (counting from the right of the
+list printed by @code{dirs}, starting with zero) to the top of
+the list by rotating the stack.
+@item @var{dir}
+Makes the current working directory be the top of the stack, making
+it the new current directory as if it had been supplied as an argument
+to the @code{cd} builtin.
+@end table
+@end table
+
+@node Controlling the Prompt
+@section Controlling the Prompt
+@cindex prompting
+
+The value of the variable @env{PROMPT_COMMAND} is examined just before
+Bash prints each primary prompt. If @env{PROMPT_COMMAND} is set and
+has a non-null value, then the
+value is executed just as if it had been typed on the command line.
+
+In addition, the following table describes the special characters which
+can appear in the prompt variables @env{PS1} to @env{PS4}:
+
+@table @code
+@item \a
+A bell character.
+@item \d
+The date, in "Weekday Month Date" format (e.g., "Tue May 26").
+@item \D@{@var{format}@}
+The @var{format} is passed to @code{strftime}(3) and the result is inserted
+into the prompt string; an empty @var{format} results in a locale-specific
+time representation. The braces are required.
+@item \e
+An escape character.
+@item \h
+The hostname, up to the first `.'.
+@item \H
+The hostname.
+@item \j
+The number of jobs currently managed by the shell.
+@item \l
+The basename of the shell's terminal device name.
+@item \n
+A newline.
+@item \r
+A carriage return.
+@item \s
+The name of the shell, the basename of @code{$0} (the portion
+following the final slash).
+@item \t
+The time, in 24-hour HH:MM:SS format.
+@item \T
+The time, in 12-hour HH:MM:SS format.
+@item \@@
+The time, in 12-hour am/pm format.
+@item \A
+The time, in 24-hour HH:MM format.
+@item \u
+The username of the current user.
+@item \v
+The version of Bash (e.g., 2.00)
+@item \V
+The release of Bash, version + patchlevel (e.g., 2.00.0)
+@item \w
+The current working directory, with @env{$HOME} abbreviated with a tilde
+(uses the @env{$PROMPT_DIRTRIM} variable).
+@item \W
+The basename of @env{$PWD}, with @env{$HOME} abbreviated with a tilde.
+@item \!
+The history number of this command.
+@item \#
+The command number of this command.
+@item \$
+If the effective uid is 0, @code{#}, otherwise @code{$}.
+@item \@var{nnn}
+The character whose ASCII code is the octal value @var{nnn}.
+@item \\
+A backslash.
+@item \[
+Begin a sequence of non-printing characters. This could be used to
+embed a terminal control sequence into the prompt.
+@item \]
+End a sequence of non-printing characters.
+@end table
+
+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
+(@pxref{Bash History Facilities}), 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
+@code{promptvars} shell option (@pxref{Bash Builtins}).
+
+@node The Restricted Shell
+@section The Restricted Shell
+@cindex restricted shell
+
+If Bash is started with the name @code{rbash}, or the
+@option{--restricted}
+or
+@option{-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.
+A restricted shell behaves identically to @code{bash}
+with the exception that the following are disallowed or not performed:
+
+@itemize @bullet
+@item
+Changing directories with the @code{cd} builtin.
+@item
+Setting or unsetting the values of the @env{SHELL}, @env{PATH},
+@env{ENV}, or @env{BASH_ENV} variables.
+@item
+Specifying command names containing slashes.
+@item
+Specifying a filename containing a slash as an argument to the @code{.}
+builtin command.
+@item
+Specifying a filename containing a slash as an argument to the @option{-p}
+option to the @code{hash} builtin command.
+@item
+Importing function definitions from the shell environment at startup.
+@item
+Parsing the value of @env{SHELLOPTS} from the shell environment at startup.
+@item
+Redirecting output using the @samp{>}, @samp{>|}, @samp{<>}, @samp{>&},
+@samp{&>}, and @samp{>>} redirection operators.
+@item
+Using the @code{exec} builtin to replace the shell with another command.
+@item
+Adding or deleting builtin commands with the
+@option{-f} and @option{-d} options to the @code{enable} builtin.
+@item
+Using the @code{enable} builtin command to enable disabled shell builtins.
+@item
+Specifying the @option{-p} option to the @code{command} builtin.
+@item
+Turning off restricted mode with @samp{set +r} or @samp{set +o restricted}.
+@end itemize
+
+These restrictions are enforced after any startup files are read.
+
+When a command that is found to be a shell script is executed
+(@pxref{Shell Scripts}), @code{rbash} turns off any restrictions in
+the shell spawned to execute the script.
+
+@node Bash POSIX Mode
+@section Bash POSIX Mode
+@cindex POSIX Mode
+
+Starting Bash with the @option{--posix} command-line option or executing
+@samp{set -o posix} while Bash is running will cause Bash to conform more
+closely to the @sc{posix} standard by changing the behavior to
+match that specified by @sc{posix} in areas where the Bash default differs.
+
+When invoked as @code{sh}, Bash enters @sc{posix} mode after reading the
+startup files.
+
+The following list is what's changed when `@sc{posix} mode' is in effect:
+
+@enumerate
+@item
+When a command in the hash table no longer exists, Bash will re-search
+@env{$PATH} to find the new location. This is also available with
+@samp{shopt -s checkhash}.
+
+@item
+The message printed by the job control code and builtins when a job
+exits with a non-zero status is `Done(status)'.
+
+@item
+The message printed by the job control code and builtins when a job
+is stopped is `Stopped(@var{signame})', where @var{signame} is, for
+example, @code{SIGTSTP}.
+
+@item
+The @code{bg} builtin uses the required format to describe each job placed
+in the background, which does not include an indication of whether the job
+is the current or previous job.
+
+@item
+Reserved words appearing in a context where reserved words are recognized
+do not undergo alias expansion.
+
+@item
+The @sc{posix} @env{PS1} and @env{PS2} expansions of @samp{!} to
+the history number and @samp{!!} to @samp{!} are enabled,
+and parameter expansion is performed on the values of @env{PS1} and
+@env{PS2} regardless of the setting of the @code{promptvars} option.
+
+@item
+The @sc{posix} startup files are executed (@env{$ENV}) rather than
+the normal Bash files.
+
+@item
+Tilde expansion is only performed on assignments preceding a command
+name, rather than on all assignment statements on the line.
+
+@item
+The @code{command} builtin does not prevent builtins that take assignment
+statements as arguments from expanding them as assignment statements;
+when not in @sc{posix} mode, assignment builtins lose their assignment
+statement expansion properties when preceded by @code{command}.
+
+@item
+The default history file is @file{~/.sh_history} (this is the
+default value of @env{$HISTFILE}).
+
+@item
+The output of @samp{kill -l} prints all the signal names on a single line,
+separated by spaces, without the @samp{SIG} prefix.
+
+@item
+The @code{kill} builtin does not accept signal names with a @samp{SIG}
+prefix.
+
+@item
+Non-interactive shells exit if @var{filename} in @code{.} @var{filename}
+is not found.
+
+@item
+Non-interactive shells exit if a syntax error in an arithmetic expansion
+results in an invalid expression.
+
+@item
+Non-interactive shells exit if there is a syntax error in a script read
+with the @code{.} or @code{source} builtins, or in a string processed by
+the @code{eval} builtin.
+
+@item
+Redirection operators do not perform filename expansion on the word
+in the redirection unless the shell is interactive.
+
+@item
+Redirection operators do not perform word splitting on the word in the
+redirection.
+
+@item
+Function names must be valid shell @code{name}s. 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 invalid name
+causes a fatal syntax error in non-interactive shells.
+
+@item
+Function names may not be the same as one of the @sc{posix} special
+builtins.
+
+@item
+@sc{posix} special builtins are found before shell functions
+during command lookup.
+
+@item
+The @code{time} reserved word may be used by itself as a command. When
+used in this way, it displays timing statistics for the shell and its
+completed children. The @env{TIMEFORMAT} variable controls the format
+of the timing information.
+
+@item
+When parsing and expanding a $@{@dots{}@} expansion that appears within
+double quotes, single quotes are no longer special and cannot be used to
+quote a closing brace or other special character, unless the operator is
+one of those defined to perform pattern removal. In this case, they do
+not have to appear as matched pairs.
+
+@item
+The parser does not recognize @code{time} as a reserved word if the next
+token begins with a @samp{-}.
+
+@item
+If a @sc{posix} special builtin returns an error status, a
+non-interactive shell exits. The fatal errors are those listed in
+the @sc{posix} standard, and include things like passing incorrect options,
+redirection errors, variable assignment errors for assignments preceding
+the command name, and so on.
+
+@item
+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 readonly variable.
+
+@item
+A non-interactive shell exists with an error status if a variable
+assignment error occurs in an assignment statement preceding a special
+builtin, but not with any other simple command.
+
+@item
+A non-interactive shell exits with an error status if the iteration
+variable in a @code{for} statement or the selection variable in a
+@code{select} statement is a readonly variable.
+
+@item
+Process substitution is not available.
+
+@item
+While variable indirection is available, it may not be applied to the
+@samp{#} and @samp{?} special parameters.
+
+@item
+Assignment statements preceding @sc{posix} special builtins
+persist in the shell environment after the builtin completes.
+
+@item
+Assignment statements preceding shell function calls persist in the
+shell environment after the function returns, as if a @sc{posix}
+special builtin command had been executed.
+
+@item
+The @code{export} and @code{readonly} builtin commands display their
+output in the format required by @sc{posix}.
+
+@item
+The @code{trap} builtin displays signal names without the leading
+@code{SIG}.
+
+@item
+The @code{trap} builtin doesn't check the first argument for a possible
+signal specification and revert the signal handling to the original
+disposition if it is, unless that argument consists solely of digits and
+is a valid signal number. If users want to reset the handler for a given
+signal to the original disposition, they should use @samp{-} as the
+first argument.
+
+@item
+The @code{.} and @code{source} builtins do not search the current directory
+for the filename argument if it is not found by searching @env{PATH}.
+
+@item
+Subshells spawned to execute command substitutions inherit the value of
+the @option{-e} option from the parent shell. When not in @sc{posix} mode,
+Bash clears the @option{-e} option in such subshells.
+
+@item
+Alias expansion is always enabled, even in non-interactive shells.
+
+@item
+When the @code{alias} builtin displays alias definitions, it does not
+display them with a leading @samp{alias } unless the @option{-p} option
+is supplied.
+
+@item
+When the @code{set} builtin is invoked without options, it does not display
+shell function names and definitions.
+
+@item
+When the @code{set} builtin is invoked without options, it displays
+variable values without quotes, unless they contain shell metacharacters,
+even if the result contains nonprinting characters.
+
+@item
+When the @code{cd} builtin is invoked in @var{logical} mode, and the pathname
+constructed from @code{$PWD} and the directory name supplied as an argument
+does not refer to an existing directory, @code{cd} will fail instead of
+falling back to @var{physical} mode.
+
+@item
+The @code{pwd} builtin verifies that the value it prints is the same as the
+current directory, even if it is not asked to check the file system with the
+@option{-P} option.
+
+@item
+When listing the history, the @code{fc} builtin does not include an
+indication of whether or not a history entry has been modified.
+
+@item
+The default editor used by @code{fc} is @code{ed}.
+
+@item
+The @code{type} and @code{command} builtins will not report a non-executable
+file as having been found, though the shell will attempt to execute such a
+file if it is the only so-named file found in @code{$PATH}.
+
+@item
+The @code{vi} editing mode will invoke the @code{vi} editor directly when
+the @samp{v} command is run, instead of checking @code{$VISUAL} and
+@code{$EDITOR}.
+
+@item
+When the @code{xpg_echo} option is enabled, Bash does not attempt to interpret
+any arguments to @code{echo} as options. Each argument is displayed, after
+escape characters are converted.
+
+@item
+The @code{ulimit} builtin uses a block size of 512 bytes for the @option{-c}
+and @option{-f} options.
+
+@item
+The arrival of @code{SIGCHLD} when a trap is set on @code{SIGCHLD} does
+not interrupt the @code{wait} builtin and cause it to return immediately.
+The trap command is run once for each child that exits.
+
+@item
+The @code{read} builtin may be interrupted by a signal for which a trap
+has been set.
+If Bash receives a trapped signal while executing @code{read}, the trap
+handler executes and @code{read} returns an exit status greater than 128.
+
+@end enumerate
+
+There is other @sc{posix} behavior that Bash does not implement by
+default even when in @sc{posix} mode.
+Specifically:
+
+@enumerate
+
+@item
+The @code{fc} builtin checks @code{$EDITOR} as a program to edit history
+entries if @code{FCEDIT} is unset, rather than defaulting directly to
+@code{ed}. @code{fc} uses @code{ed} if @code{EDITOR} is unset.
+
+@item
+As noted above, Bash requires the @code{xpg_echo} option to be enabled for
+the @code{echo} builtin to be fully conformant.
+
+@end enumerate
+
+Bash can be configured to be @sc{posix}-conformant by default, by specifying
+the @option{--enable-strict-posix-default} to @code{configure} when building
+(@pxref{Optional Features}).
+
+@node Job Control
+@chapter Job Control
+
+This chapter discusses what job control is, how it works, and how
+Bash allows you to access its facilities.
+
+@menu
+* Job Control Basics:: How job control works.
+* Job Control Builtins:: Bash builtin commands used to interact
+ with job control.
+* Job Control Variables:: Variables Bash uses to customize job
+ control.
+@end menu
+
+@node Job Control Basics
+@section Job Control Basics
+@cindex job control
+@cindex foreground
+@cindex background
+@cindex suspending jobs
+
+Job control
+refers to the ability to selectively stop (suspend)
+the execution of processes and continue (resume)
+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 Bash.
+
+The shell associates a @var{job} with each pipeline. It keeps a
+table of currently executing jobs, which may be listed with the
+@code{jobs} command. When Bash starts a job
+asynchronously, it prints a line that looks
+like:
+@example
+[1] 25647
+@end example
+@noindent
+indicating that this job is job number 1 and that the process @sc{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. Bash uses the @var{job} abstraction as the
+basis for job control.
+
+To facilitate the implementation of the user interface to job
+control, the operating system maintains the notion of a current terminal
+process group @sc{id}. Members of this process group (processes whose
+process group @sc{id} is equal to the current terminal process group
+@sc{id}) receive keyboard-generated signals such as @code{SIGINT}.
+These processes are said to be in the foreground. Background
+processes are those whose process group @sc{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 @code{stty tostop}, write to the terminal.
+Background processes which attempt to
+read from (write to when @code{stty tostop} is in effect) the
+terminal are sent a @code{SIGTTIN} (@code{SIGTTOU})
+signal by the kernel's terminal driver,
+which, unless caught, suspends the process.
+
+If the operating system on which Bash is running supports
+job control, Bash contains facilities to use it. Typing the
+@var{suspend} character (typically @samp{^Z}, Control-Z) while a
+process is running causes that process to be stopped and returns
+control to Bash. Typing the @var{delayed suspend} character
+(typically @samp{^Y}, Control-Y) causes the process to be stopped
+when it attempts to read input from the terminal, and control to
+be returned to Bash. The user then manipulates the state of
+this job, using the @code{bg} command to continue it in the
+background, the @code{fg} command to continue it in the
+foreground, or the @code{kill} command to kill it. A @samp{^Z}
+takes effect immediately, and has the additional side effect of
+causing pending output and typeahead to be discarded.
+
+There are a number of ways to refer to a job in the shell. The
+character @samp{%} introduces a job specification (@var{jobspec}).
+
+Job number @code{n} may be referred to as @samp{%n}.
+The symbols @samp{%%} and @samp{%+} refer to the shell's notion of the
+current job, which is the last job stopped while it was in the foreground
+or started in the background.
+A single @samp{%} (with no accompanying job specification) also refers
+to the current job.
+The previous job may be referenced using @samp{%-}.
+If there is only a single job, @samp{%+} and @samp{%-} can both be used
+to refer to that job.
+In output pertaining to jobs (e.g., the output of the @code{jobs}
+command), the current job is always flagged with a @samp{+}, and the
+previous job with a @samp{-}.
+
+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, @samp{%ce} refers
+to a stopped @code{ce} job. Using @samp{%?ce}, on the
+other hand, refers to any job containing the string @samp{ce} in
+its command line. If the prefix or substring matches more than one job,
+Bash reports an error.
+
+Simply naming a job can be used to bring it into the foreground:
+@samp{%1} is a synonym for @samp{fg %1}, bringing job 1 from the
+background into the foreground. Similarly, @samp{%1 &} resumes
+job 1 in the background, equivalent to @samp{bg %1}
+
+The shell learns immediately whenever a job changes state.
+Normally, 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 @option{-b} option to the @code{set} builtin is enabled,
+Bash reports such changes immediately (@pxref{The Set Builtin}).
+Any trap on @code{SIGCHLD} is executed for each child process
+that exits.
+
+If an attempt to exit Bash is made while jobs are stopped, (or running, if
+the @code{checkjobs} option is enabled -- see @ref{The Shopt Builtin}), the
+shell prints a warning message, and if the @code{checkjobs} option is
+enabled, lists the jobs and their statuses.
+The @code{jobs} command may then be used to inspect their status.
+If a second attempt to exit is made without an intervening command,
+Bash does not print another warning, and any stopped jobs are terminated.
+
+@node Job Control Builtins
+@section Job Control Builtins
+
+@table @code
+
+@item bg
+@btindex bg
+@example
+bg [@var{jobspec} @dots{}]
+@end example
+
+Resume each suspended job @var{jobspec} in the background, as if it
+had been started with @samp{&}.
+If @var{jobspec} is not supplied, the current job is used.
+The return status is zero unless it is run when job control is not
+enabled, or, when run with job control enabled, any
+@var{jobspec} was not found or specifies a job
+that was started without job control.
+
+@item fg
+@btindex fg
+@example
+fg [@var{jobspec}]
+@end example
+
+Resume the job @var{jobspec} in the foreground and make it the current job.
+If @var{jobspec} is not supplied, the current job is used.
+The return status is that of the command placed into the foreground,
+or non-zero if run when job control is disabled or, when run with
+job control enabled, @var{jobspec} does not specify a valid job or
+@var{jobspec} specifies a job that was started without job control.
+
+@item jobs
+@btindex jobs
+@example
+jobs [-lnprs] [@var{jobspec}]
+jobs -x @var{command} [@var{arguments}]
+@end example
+
+The first form lists the active jobs. The options have the
+following meanings:
+
+@table @code
+@item -l
+List process @sc{id}s in addition to the normal information.
+
+@item -n
+Display information only about jobs that have changed status since
+the user was last notified of their status.
+
+@item -p
+List only the process @sc{id} of the job's process group leader.
+
+@item -r
+Display only running jobs.
+
+@item -s
+Display only stopped jobs.
+@end table
+
+If @var{jobspec} is given,
+output is restricted to information about that job.
+If @var{jobspec} is not supplied, the status of all jobs is
+listed.
+
+If the @option{-x} option is supplied, @code{jobs} replaces any
+@var{jobspec} found in @var{command} or @var{arguments} with the
+corresponding process group @sc{id}, and executes @var{command},
+passing it @var{argument}s, returning its exit status.
+
+@item kill
+@btindex kill
+@example
+kill [-s @var{sigspec}] [-n @var{signum}] [-@var{sigspec}] @var{jobspec} or @var{pid}
+kill -l [@var{exit_status}]
+@end example
+
+Send a signal specified by @var{sigspec} or @var{signum} to the process
+named by job specification @var{jobspec} or process @sc{id} @var{pid}.
+@var{sigspec} is either a case-insensitive signal name such as
+@code{SIGINT} (with or without the @code{SIG} prefix)
+or a signal number; @var{signum} is a signal number.
+If @var{sigspec} and @var{signum} are not present, @code{SIGTERM} is used.
+The @option{-l} option lists the signal names.
+If any arguments are supplied when @option{-l} is given, the names of the
+signals corresponding to the arguments are listed, and the return status
+is zero.
+@var{exit_status} is a number specifying a signal number or the exit
+status of a process terminated by a signal.
+The return status is zero if at least one signal was successfully sent,
+or non-zero if an error occurs or an invalid option is encountered.
+
+@item wait
+@btindex wait
+@example
+wait [@var{jobspec} or @var{pid} @dots{}]
+@end example
+
+Wait until the child process specified by each process @sc{id} @var{pid}
+or job specification @var{jobspec} exits and return the exit status of the
+last command waited for.
+If a job spec is given, all processes in the job are waited for.
+If no arguments are given, all currently active child processes are
+waited for, and the return status is zero.
+If the @option{-n} option is supplied, @code{wait} waits for any job to
+terminate and returns its exit status.
+If neither @var{jobspec} nor @var{pid} specifies an active child process
+of the shell, the return status is 127.
+
+@item disown
+@btindex disown
+@example
+disown [-ar] [-h] [@var{jobspec} @dots{}]
+@end example
+
+Without options, remove each @var{jobspec} from the table of
+active jobs.
+If the @option{-h} option is given, the job is not removed from the table,
+but is marked so that @code{SIGHUP} is not sent to the job if the shell
+receives a @code{SIGHUP}.
+If @var{jobspec} is not present, and neither the @option{-a} nor @option{-r}
+option is supplied, the current job is used.
+If no @var{jobspec} is supplied, the @option{-a} option means to remove or
+mark all jobs; the @option{-r} option without a @var{jobspec}
+argument restricts operation to running jobs.
+
+@item suspend
+@btindex suspend
+@example
+suspend [-f]
+@end example
+
+Suspend the execution of this shell until it receives a
+@code{SIGCONT} signal.
+A login shell cannot be suspended; the @option{-f}
+option can be used to override this and force the suspension.
+@end table
+
+When job control is not active, the @code{kill} and @code{wait}
+builtins do not accept @var{jobspec} arguments. They must be
+supplied process @sc{id}s.
+
+@node Job Control Variables
+@section Job Control Variables
+
+@vtable @code
+
+@item auto_resume
+This variable controls how the shell interacts with the user and
+job control. If this variable exists then single word simple
+commands without redirections are treated as candidates for resumption
+of an existing job. There is no ambiguity allowed; if there is
+more than one job beginning with the string typed, then
+the most recently accessed job will be selected.
+The name of a stopped job, in this context, is the command line
+used to start it. If this variable is set to the value @samp{exact},
+the string supplied must match the name of a stopped job exactly;
+if set to @samp{substring},
+the string supplied needs to match a substring of the name of a
+stopped job. The @samp{substring} value provides functionality
+analogous to the @samp{%?} job @sc{id} (@pxref{Job Control Basics}).
+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 @samp{%} job @sc{id}.
+
+@end vtable
+
+@set readline-appendix
+@set history-appendix
+@cindex Readline, how to use
+@include rluser.texi
+@cindex History, how to use
+@include hsuser.texi
+@clear readline-appendix
+@clear history-appendix
+
+@node Installing Bash
+@chapter Installing Bash
+
+This chapter provides basic instructions for installing Bash on
+the various supported platforms. The distribution supports the
+@sc{gnu} operating systems, nearly every version of Unix, and several
+non-Unix systems such as BeOS and Interix.
+Other independent ports exist for
+@sc{ms-dos}, @sc{os/2}, and Windows platforms.
+
+@menu
+* Basic Installation:: Installation instructions.
+* Compilers and Options:: How to set special options for various
+ systems.
+* Compiling For Multiple Architectures:: How to compile Bash for more
+ than one kind of system from
+ the same source tree.
+* Installation Names:: How to set the various paths used by the installation.
+* Specifying the System Type:: How to configure Bash for a particular system.
+* Sharing Defaults:: How to share default configuration values among GNU
+ programs.
+* Operation Controls:: Options recognized by the configuration program.
+* Optional Features:: How to enable and disable optional features when
+ building Bash.
+@end menu
+
+@node Basic Installation
+@section Basic Installation
+@cindex installation
+@cindex configuration
+@cindex Bash installation
+@cindex Bash configuration
+
+These are installation instructions for Bash.
+
+The simplest way to compile Bash is:
+
+@enumerate
+@item
+@code{cd} to the directory containing the source code and type
+@samp{./configure} to configure Bash for your system. If you're
+using @code{csh} on an old version of System V, you might need to
+type @samp{sh ./configure} instead to prevent @code{csh} from trying
+to execute @code{configure} itself.
+
+Running @code{configure} takes some time.
+While running, it prints messages telling which features it is
+checking for.
+
+@item
+Type @samp{make} to compile Bash and build the @code{bashbug} bug
+reporting script.
+
+@item
+Optionally, type @samp{make tests} to run the Bash test suite.
+
+@item
+Type @samp{make install} to install @code{bash} and @code{bashbug}.
+This will also install the manual pages and Info file.
+
+@end enumerate
+
+The @code{configure} shell script attempts to guess correct
+values for various system-dependent variables used during
+compilation. It uses those values to create a @file{Makefile} in
+each directory of the package (the top directory, the
+@file{builtins}, @file{doc}, and @file{support} directories,
+each directory under @file{lib}, and several others). It also creates a
+@file{config.h} file containing system-dependent definitions.
+Finally, it creates a shell script named @code{config.status} that you
+can run in the future to recreate the current configuration, a
+file @file{config.cache} that saves the results of its tests to
+speed up reconfiguring, and a file @file{config.log} containing
+compiler output (useful mainly for debugging @code{configure}).
+If at some point
+@file{config.cache} contains results you don't want to keep, you
+may remove or edit it.
+
+To find out more about the options and arguments that the
+@code{configure} script understands, type
+
+@example
+bash-2.04$ ./configure --help
+@end example
+
+@noindent
+at the Bash prompt in your Bash source directory.
+
+If you need to do unusual things to compile Bash, please
+try to figure out how @code{configure} could check whether or not
+to do them, and mail diffs or instructions to
+@email{bash-maintainers@@gnu.org} so they can be
+considered for the next release.
+
+The file @file{configure.ac} is used to create @code{configure}
+by a program called Autoconf. You only need
+@file{configure.ac} if you want to change it or regenerate
+@code{configure} using a newer version of Autoconf. If
+you do this, make sure you are using Autoconf version 2.50 or
+newer.
+
+You can remove the program binaries and object files from the
+source code directory by typing @samp{make clean}. To also remove the
+files that @code{configure} created (so you can compile Bash for
+a different kind of computer), type @samp{make distclean}.
+
+@node Compilers and Options
+@section Compilers and Options
+
+Some systems require unusual options for compilation or linking
+that the @code{configure} script does not know about. You can
+give @code{configure} initial values for variables by setting
+them in the environment. Using a Bourne-compatible shell, you
+can do that on the command line like this:
+
+@example
+CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
+@end example
+
+On systems that have the @code{env} program, you can do it like this:
+
+@example
+env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
+@end example
+
+The configuration process uses GCC to build Bash if it
+is available.
+
+@node Compiling For Multiple Architectures
+@section Compiling For Multiple Architectures
+
+You can compile Bash for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory. To do this, you must use a version of @code{make} that
+supports the @code{VPATH} variable, such as GNU @code{make}.
+@code{cd} to the
+directory where you want the object files and executables to go and run
+the @code{configure} script from the source directory. You may need to
+supply the @option{--srcdir=PATH} argument to tell @code{configure} where the
+source files are. @code{configure} automatically checks for the
+source code in the directory that @code{configure} is in and in `..'.
+
+If you have to use a @code{make} that does not supports the @code{VPATH}
+variable, you can compile Bash for one architecture at a
+time in the source code directory. After you have installed
+Bash for one architecture, use @samp{make distclean} before
+reconfiguring for another architecture.
+
+Alternatively, if your system supports symbolic links, you can use the
+@file{support/mkclone} script to create a build tree which has
+symbolic links back to each file in the source directory. Here's an
+example that creates a build directory in the current directory from a
+source directory @file{/usr/gnu/src/bash-2.0}:
+
+@example
+bash /usr/gnu/src/bash-2.0/support/mkclone -s /usr/gnu/src/bash-2.0 .
+@end example
+
+@noindent
+The @code{mkclone} script requires Bash, so you must have already built
+Bash for at least one architecture before you can create build
+directories for other architectures.
+
+@node Installation Names
+@section Installation Names
+
+By default, @samp{make install} will install into
+@file{/usr/local/bin}, @file{/usr/local/man}, etc. You can
+specify an installation prefix other than @file{/usr/local} by
+giving @code{configure} the option @option{--prefix=@var{PATH}},
+or by specifying a value for the @code{DESTDIR} @samp{make}
+variable when running @samp{make install}.
+
+You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files.
+If you give @code{configure} the option
+@option{--exec-prefix=@var{PATH}}, @samp{make install} will use
+@var{PATH} as the prefix for installing programs and libraries.
+Documentation and other data files will still use the regular prefix.
+
+@node Specifying the System Type
+@section Specifying the System Type
+
+There may be some features @code{configure} can not figure out
+automatically, but need to determine by the type of host Bash
+will run on. Usually @code{configure} can figure that
+out, but if it prints a message saying it can not guess the host
+type, give it the @option{--host=TYPE} option. @samp{TYPE} can
+either be a short name for the system type, such as @samp{sun4},
+or a canonical name with three fields: @samp{CPU-COMPANY-SYSTEM}
+(e.g., @samp{i386-unknown-freebsd4.2}).
+
+See the file @file{support/config.sub} for the possible
+values of each field.
+
+@node Sharing Defaults
+@section Sharing Defaults
+
+If you want to set default values for @code{configure} scripts to
+share, you can create a site shell script called
+@code{config.site} that gives default values for variables like
+@code{CC}, @code{cache_file}, and @code{prefix}. @code{configure}
+looks for @file{PREFIX/share/config.site} if it exists, then
+@file{PREFIX/etc/config.site} if it exists. Or, you can set the
+@code{CONFIG_SITE} environment variable to the location of the site
+script. A warning: the Bash @code{configure} looks for a site script,
+but not all @code{configure} scripts do.
+
+@node Operation Controls
+@section Operation Controls
+
+@code{configure} recognizes the following options to control how it
+operates.
+
+@table @code
+
+@item --cache-file=@var{file}
+Use and save the results of the tests in
+@var{file} instead of @file{./config.cache}. Set @var{file} to
+@file{/dev/null} to disable caching, for debugging
+@code{configure}.
+
+@item --help
+Print a summary of the options to @code{configure}, and exit.
+
+@item --quiet
+@itemx --silent
+@itemx -q
+Do not print messages saying which checks are being made.
+
+@item --srcdir=@var{dir}
+Look for the Bash source code in directory @var{dir}. Usually
+@code{configure} can determine that directory automatically.
+
+@item --version
+Print the version of Autoconf used to generate the @code{configure}
+script, and exit.
+@end table
+
+@code{configure} also accepts some other, not widely used, boilerplate
+options. @samp{configure --help} prints the complete list.
+
+@node Optional Features
+@section Optional Features
+
+The Bash @code{configure} has a number of @option{--enable-@var{feature}}
+options, where @var{feature} indicates an optional part of Bash.
+There are also several @option{--with-@var{package}} options,
+where @var{package} is something like @samp{bash-malloc} or @samp{purify}.
+To turn off the default use of a package, use
+@option{--without-@var{package}}. To configure Bash without a feature
+that is enabled by default, use @option{--disable-@var{feature}}.
+
+Here is a complete list of the @option{--enable-} and
+@option{--with-} options that the Bash @code{configure} recognizes.
+
+@table @code
+@item --with-afs
+Define if you are using the Andrew File System from Transarc.
+
+@item --with-bash-malloc
+Use the Bash version of
+@code{malloc} in the directory @file{lib/malloc}. This is not the same
+@code{malloc} that appears in @sc{gnu} libc, but an older version
+originally derived from the 4.2 @sc{bsd} @code{malloc}. This @code{malloc}
+is very fast, but wastes some space on each allocation.
+This option is enabled by default.
+The @file{NOTES} file contains a list of systems for
+which this should be turned off, and @code{configure} disables this
+option automatically for a number of systems.
+
+@item --with-curses
+Use the curses library instead of the termcap library. This should
+be supplied if your system has an inadequate or incomplete termcap
+database.
+
+@item --with-gnu-malloc
+A synonym for @code{--with-bash-malloc}.
+
+@item --with-installed-readline[=@var{PREFIX}]
+Define this to make Bash link with a locally-installed version of Readline
+rather than the version in @file{lib/readline}. This works only with
+Readline 5.0 and later versions. If @var{PREFIX} is @code{yes} or not
+supplied, @code{configure} uses the values of the make variables
+@code{includedir} and @code{libdir}, which are subdirectories of @code{prefix}
+by default, to find the installed version of Readline if it is not in
+the standard system include and library directories.
+If @var{PREFIX} is @code{no}, Bash links with the version in
+@file{lib/readline}.
+If @var{PREFIX} is set to any other value, @code{configure} treats it as
+a directory pathname and looks for
+the installed version of Readline in subdirectories of that directory
+(include files in @var{PREFIX}/@code{include} and the library in
+@var{PREFIX}/@code{lib}).
+
+@item --with-purify
+Define this to use the Purify memory allocation checker from Rational
+Software.
+
+@item --enable-minimal-config
+This produces a shell with minimal features, close to the historical
+Bourne shell.
+@end table
+
+There are several @option{--enable-} options that alter how Bash is
+compiled and linked, rather than changing run-time features.
+
+@table @code
+@item --enable-largefile
+Enable support for @uref{http://www.sas.com/standards/large_file/x_open.20Mar96.html,
+large files} if the operating system requires special compiler options
+to build programs which can access large files. This is enabled by
+default, if the operating system provides large file support.
+
+@item --enable-profiling
+This builds a Bash binary that produces profiling information to be
+processed by @code{gprof} each time it is executed.
+
+@item --enable-static-link
+This causes Bash to be linked statically, if @code{gcc} is being used.
+This could be used to build a version to use as root's shell.
+@end table
+
+The @samp{minimal-config} option can be used to disable all of
+the following options, but it is processed first, so individual
+options may be enabled using @samp{enable-@var{feature}}.
+
+All of the following options except for @samp{disabled-builtins},
+@samp{directpand-default}, and
+@samp{xpg-echo-default} are
+enabled by default, unless the operating system does not provide the
+necessary support.
+
+@table @code
+@item --enable-alias
+Allow alias expansion and include the @code{alias} and @code{unalias}
+builtins (@pxref{Aliases}).
+
+@item --enable-arith-for-command
+Include support for the alternate form of the @code{for} command
+that behaves like the C language @code{for} statement
+(@pxref{Looping Constructs}).
+
+@item --enable-array-variables
+Include support for one-dimensional array shell variables
+(@pxref{Arrays}).
+
+@item --enable-bang-history
+Include support for @code{csh}-like history substitution
+(@pxref{History Interaction}).
+
+@item --enable-brace-expansion
+Include @code{csh}-like brace expansion
+( @code{b@{a,b@}c} @expansion{} @code{bac bbc} ).
+See @ref{Brace Expansion}, for a complete description.
+
+@item --enable-casemod-attributes
+Include support for case-modifying attributes in the @code{declare} builtin
+and assignment statements. Variables with the @var{uppercase} attribute,
+for example, will have their values converted to uppercase upon assignment.
+
+@item --enable-casemod-expansion
+Include support for case-modifying word expansions.
+
+@item --enable-command-timing
+Include support for recognizing @code{time} as a reserved word and for
+displaying timing statistics for the pipeline following @code{time}
+(@pxref{Pipelines}).
+This allows pipelines as well as shell builtins and functions to be timed.
+
+@item --enable-cond-command
+Include support for the @code{[[} conditional command.
+(@pxref{Conditional Constructs}).
+
+@item --enable-cond-regexp
+Include support for matching @sc{posix} regular expressions using the
+@samp{=~} binary operator in the @code{[[} conditional command.
+(@pxref{Conditional Constructs}).
+
+@item --enable-coprocesses
+Include support for coprocesses and the @code{coproc} reserved word
+(@pxref{Pipelines}).
+
+@item --enable-debugger
+Include support for the bash debugger (distributed separately).
+
+@item --enable-direxpand-default
+Cause the @code{direxpand} shell option (@pxref{The Shopt Builtin})
+to be enabled by default when the shell starts.
+It is normally disabled by default.
+
+@item --enable-directory-stack
+Include support for a @code{csh}-like directory stack and the
+@code{pushd}, @code{popd}, and @code{dirs} builtins
+(@pxref{The Directory Stack}).
+
+@item --enable-disabled-builtins
+Allow builtin commands to be invoked via @samp{builtin xxx}
+even after @code{xxx} has been disabled using @samp{enable -n xxx}.
+See @ref{Bash Builtins}, for details of the @code{builtin} and
+@code{enable} builtin commands.
+
+@item --enable-dparen-arithmetic
+Include support for the @code{((@dots{}))} command
+(@pxref{Conditional Constructs}).
+
+@item --enable-extended-glob
+Include support for the extended pattern matching features described
+above under @ref{Pattern Matching}.
+
+@item --enable-extended-glob-default
+Set the default value of the @var{extglob} shell option described
+above under @ref{The Shopt Builtin} to be enabled.
+
+@item --enable-help-builtin
+Include the @code{help} builtin, which displays help on shell builtins and
+variables (@pxref{Bash Builtins}).
+
+@item --enable-history
+Include command history and the @code{fc} and @code{history}
+builtin commands (@pxref{Bash History Facilities}).
+
+@item --enable-job-control
+This enables the job control features (@pxref{Job Control}),
+if the operating system supports them.
+
+@item --enable-multibyte
+This enables support for multibyte characters if the operating
+system provides the necessary support.
+
+@item --enable-net-redirections
+This enables the special handling of filenames of the form
+@code{/dev/tcp/@var{host}/@var{port}} and
+@code{/dev/udp/@var{host}/@var{port}}
+when used in redirections (@pxref{Redirections}).
+
+@item --enable-process-substitution
+This enables process substitution (@pxref{Process Substitution}) if
+the operating system provides the necessary support.
+
+@item --enable-progcomp
+Enable the programmable completion facilities
+(@pxref{Programmable Completion}).
+If Readline is not enabled, this option has no effect.
+
+@item --enable-prompt-string-decoding
+Turn on the interpretation of a number of backslash-escaped characters
+in the @env{$PS1}, @env{$PS2}, @env{$PS3}, and @env{$PS4} prompt
+strings. See @ref{Controlling the Prompt}, for a complete list of prompt
+string escape sequences.
+
+@item --enable-readline
+Include support for command-line editing and history with the Bash
+version of the Readline library (@pxref{Command Line Editing}).
+
+@item --enable-restricted
+Include support for a @dfn{restricted shell}. If this is enabled, Bash,
+when called as @code{rbash}, enters a restricted mode. See
+@ref{The Restricted Shell}, for a description of restricted mode.
+
+@item --enable-select
+Include the @code{select} compound command, which allows the generation of
+simple menus (@pxref{Conditional Constructs}).
+
+@item --enable-separate-helpfiles
+Use external files for the documentation displayed by the @code{help} builtin
+instead of storing the text internally.
+
+@item --enable-single-help-strings
+Store the text displayed by the @code{help} builtin as a single string for
+each help topic. This aids in translating the text to different languages.
+You may need to disable this if your compiler cannot handle very long string
+literals.
+
+@item --enable-strict-posix-default
+Make Bash @sc{posix}-conformant by default (@pxref{Bash POSIX Mode}).
+
+@item --enable-usg-echo-default
+A synonym for @code{--enable-xpg-echo-default}.
+
+@item --enable-xpg-echo-default
+Make the @code{echo} builtin expand backslash-escaped characters by default,
+without requiring the @option{-e} option.
+This sets the default value of the @code{xpg_echo} shell option to @code{on},
+which makes the Bash @code{echo} behave more like the version specified in
+the Single Unix Specification, version 3.
+@xref{Bash Builtins}, for a description of the escape sequences that
+@code{echo} recognizes.
+@end table
+
+The file @file{config-top.h} contains C Preprocessor
+@samp{#define} statements for options which are not settable from
+@code{configure}.
+Some of these are not meant to be changed; beware of the consequences if
+you do.
+Read the comments associated with each definition for more
+information about its effect.
+
+@node Reporting Bugs
+@appendix Reporting Bugs
+
+Please report all bugs you find in Bash.
+But first, you should
+make sure that it really is a bug, and that it appears in the latest
+version of Bash.
+The latest version of Bash is always available for FTP from
+@uref{ftp://ftp.gnu.org/pub/gnu/bash/}.
+
+Once you have determined that a bug actually exists, use the
+@code{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 @email{bug-bash@@gnu.org} or posted to the Usenet
+newsgroup @code{gnu.bash.bug}.
+
+All bug reports should include:
+@itemize @bullet
+@item
+The version number of Bash.
+@item
+The hardware and operating system.
+@item
+The compiler used to compile Bash.
+@item
+A description of the bug behaviour.
+@item
+A short script or `recipe' which exercises the bug and may be used
+to reproduce it.
+@end itemize
+
+@noindent
+@code{bashbug} inserts the first three items automatically into
+the template it provides for filing a bug report.
+
+Please send all reports concerning this manual to
+@email{bug-bash@@gnu.org}.
+
+@node Major Differences From The Bourne Shell
+@appendix Major Differences From The Bourne Shell
+
+Bash implements essentially the same grammar, parameter and
+variable expansion, redirection, and quoting as the Bourne Shell.
+Bash uses the @sc{posix} standard as the specification of
+how these features are to be implemented. There are some
+differences between the traditional Bourne shell and Bash; this
+section quickly details the differences of significance. A
+number of these differences are explained in greater depth in
+previous sections.
+This section uses the version of @code{sh} included in SVR4.2 (the
+last version of the historical Bourne shell) as the baseline reference.
+
+@itemize @bullet
+
+@item
+Bash is @sc{posix}-conformant, even where the @sc{posix} specification
+differs from traditional @code{sh} behavior (@pxref{Bash POSIX Mode}).
+
+@item
+Bash has multi-character invocation options (@pxref{Invoking Bash}).
+
+@item
+Bash has command-line editing (@pxref{Command Line Editing}) and
+the @code{bind} builtin.
+
+@item
+Bash provides a programmable word completion mechanism
+(@pxref{Programmable Completion}), and builtin commands
+@code{complete}, @code{compgen}, and @code{compopt}, to
+manipulate it.
+
+@item
+Bash has command history (@pxref{Bash History Facilities}) and the
+@code{history} and @code{fc} builtins to manipulate it.
+The Bash history list maintains timestamp information and uses the
+value of the @code{HISTTIMEFORMAT} variable to display it.
+
+@item
+Bash implements @code{csh}-like history expansion
+(@pxref{History Interaction}).
+
+@item
+Bash has one-dimensional array variables (@pxref{Arrays}), and the
+appropriate variable expansions and assignment syntax to use them.
+Several of the Bash builtins take options to act on arrays.
+Bash provides a number of built-in array variables.
+
+@item
+The @code{$'@dots{}'} quoting syntax, which expands ANSI-C
+backslash-escaped characters in the text between the single quotes,
+is supported (@pxref{ANSI-C Quoting}).
+
+@item
+Bash supports the @code{$"@dots{}"} quoting syntax to do
+locale-specific translation of the characters between the double
+quotes. The @option{-D}, @option{--dump-strings}, and @option{--dump-po-strings}
+invocation options list the translatable strings found in a script
+(@pxref{Locale Translation}).
+
+@item
+Bash implements the @code{!} keyword to negate the return value of
+a pipeline (@pxref{Pipelines}).
+Very useful when an @code{if} statement needs to act only if a test fails.
+The Bash @samp{-o pipefail} option to @code{set} will cause a pipeline to
+return a failure status if any command fails.
+
+@item
+Bash has the @code{time} reserved word and command timing (@pxref{Pipelines}).
+The display of the timing statistics may be controlled with the
+@env{TIMEFORMAT} variable.
+
+@item
+Bash implements the @code{for (( @var{expr1} ; @var{expr2} ; @var{expr3} ))}
+arithmetic for command, similar to the C language (@pxref{Looping Constructs}).
+
+@item
+Bash includes the @code{select} compound command, which allows the
+generation of simple menus (@pxref{Conditional Constructs}).
+
+@item
+Bash includes the @code{[[} compound command, which makes conditional
+testing part of the shell grammar (@pxref{Conditional Constructs}), including
+optional regular expression matching.
+
+@item
+Bash provides optional case-insensitive matching for the @code{case} and
+@code{[[} constructs.
+
+@item
+Bash includes brace expansion (@pxref{Brace Expansion}) and tilde
+expansion (@pxref{Tilde Expansion}).
+
+@item
+Bash implements command aliases and the @code{alias} and @code{unalias}
+builtins (@pxref{Aliases}).
+
+@item
+Bash provides shell arithmetic, the @code{((} compound command
+(@pxref{Conditional Constructs}),
+and arithmetic expansion (@pxref{Shell Arithmetic}).
+
+@item
+Variables present in the shell's initial environment are automatically
+exported to child processes. The Bourne shell does not normally do
+this unless the variables are explicitly marked using the @code{export}
+command.
+
+@item
+Bash supports the @samp{+=} assignment operator, which appends to the value
+of the variable named on the left hand side.
+
+@item
+Bash includes the @sc{posix} pattern removal @samp{%}, @samp{#}, @samp{%%}
+and @samp{##} expansions to remove leading or trailing substrings from
+variable values (@pxref{Shell Parameter Expansion}).
+
+@item
+The expansion @code{$@{#xx@}}, which returns the length of @code{$@{xx@}},
+is supported (@pxref{Shell Parameter Expansion}).
+
+@item
+The expansion @code{$@{var:}@var{offset}@code{[:}@var{length}@code{]@}},
+which expands to the substring of @code{var}'s value of length
+@var{length}, beginning at @var{offset}, is present
+(@pxref{Shell Parameter Expansion}).
+
+@item
+The expansion
+@code{$@{var/[/]}@var{pattern}@code{[/}@var{replacement}@code{]@}},
+which matches @var{pattern} and replaces it with @var{replacement} in
+the value of @code{var}, is available (@pxref{Shell Parameter Expansion}).
+
+@item
+The expansion @code{$@{!@var{prefix}*@}} expansion, which expands to
+the names of all shell variables whose names begin with @var{prefix},
+is available (@pxref{Shell Parameter Expansion}).
+
+@item
+Bash has @var{indirect} variable expansion using @code{$@{!word@}}
+(@pxref{Shell Parameter Expansion}).
+
+@item
+Bash can expand positional parameters beyond @code{$9} using
+@code{$@{@var{num}@}}.
+
+@item
+The @sc{posix} @code{$()} form of command substitution
+is implemented (@pxref{Command Substitution}),
+and preferred to the Bourne shell's @code{``} (which
+is also implemented for backwards compatibility).
+
+@item
+Bash has process substitution (@pxref{Process Substitution}).
+
+@item
+Bash automatically assigns variables that provide information about the
+current user (@env{UID}, @env{EUID}, and @env{GROUPS}), the current host
+(@env{HOSTTYPE}, @env{OSTYPE}, @env{MACHTYPE}, and @env{HOSTNAME}),
+and the instance of Bash that is running (@env{BASH},
+@env{BASH_VERSION}, and @env{BASH_VERSINFO}). @xref{Bash Variables},
+for details.
+
+@item
+The @env{IFS} variable is used to split only the results of expansion,
+not all words (@pxref{Word Splitting}).
+This closes a longstanding shell security hole.
+
+@item
+The filename expansion bracket expression code uses @samp{!} and @samp{^}
+to negate the set of characters between the brackets.
+The Bourne shell uses only @samp{!}.
+
+@item
+Bash implements the full set of @sc{posix} filename expansion operators,
+including @var{character classes}, @var{equivalence classes}, and
+@var{collating symbols} (@pxref{Filename Expansion}).
+
+@item
+Bash implements extended pattern matching features when the @code{extglob}
+shell option is enabled (@pxref{Pattern Matching}).
+
+@item
+It is possible to have a variable and a function with the same name;
+@code{sh} does not separate the two name spaces.
+
+@item
+Bash functions are permitted to have local variables using the
+@code{local} builtin, and thus useful recursive functions may be written
+(@pxref{Bash Builtins}).
+
+@item
+Variable assignments preceding commands affect only that command, even
+builtins and functions (@pxref{Environment}).
+In @code{sh}, all variable assignments
+preceding commands are global unless the command is executed from the
+file system.
+
+@item
+Bash performs filename expansion on filenames specified as operands
+to input and output redirection operators (@pxref{Redirections}).
+
+@item
+Bash contains the @samp{<>} redirection operator, allowing a file to be
+opened for both reading and writing, and the @samp{&>} redirection
+operator, for directing standard output and standard error to the same
+file (@pxref{Redirections}).
+
+@item
+Bash includes the @samp{<<<} redirection operator, allowing a string to
+be used as the standard input to a command.
+
+@item
+Bash implements the @samp{[n]<&@var{word}} and @samp{[n]>&@var{word}}
+redirection operators, which move one file descriptor to another.
+
+@item
+Bash treats a number of filenames specially when they are
+used in redirection operators (@pxref{Redirections}).
+
+@item
+Bash can open network connections to arbitrary machines and services
+with the redirection operators (@pxref{Redirections}).
+
+@item
+The @code{noclobber} option is available to avoid overwriting existing
+files with output redirection (@pxref{The Set Builtin}).
+The @samp{>|} redirection operator may be used to override @code{noclobber}.
+
+@item
+The Bash @code{cd} and @code{pwd} builtins (@pxref{Bourne Shell Builtins})
+each take @option{-L} and @option{-P} options to switch between logical and
+physical modes.
+
+@item
+Bash allows a function to override a builtin with the same name, and provides
+access to that builtin's functionality within the function via the
+@code{builtin} and @code{command} builtins (@pxref{Bash Builtins}).
+
+@item
+The @code{command} builtin allows selective disabling of functions
+when command lookup is performed (@pxref{Bash Builtins}).
+
+@item
+Individual builtins may be enabled or disabled using the @code{enable}
+builtin (@pxref{Bash Builtins}).
+
+@item
+The Bash @code{exec} builtin takes additional options that allow users
+to control the contents of the environment passed to the executed
+command, and what the zeroth argument to the command is to be
+(@pxref{Bourne Shell Builtins}).
+
+@item
+Shell functions may be exported to children via the environment
+using @code{export -f} (@pxref{Shell Functions}).
+
+@item
+The Bash @code{export}, @code{readonly}, and @code{declare} builtins can
+take a @option{-f} option to act on shell functions, a @option{-p} option to
+display variables with various attributes set in a format that can be
+used as shell input, a @option{-n} option to remove various variable
+attributes, and @samp{name=value} arguments to set variable attributes
+and values simultaneously.
+
+@item
+The Bash @code{hash} builtin allows a name to be associated with
+an arbitrary filename, even when that filename cannot be found by
+searching the @env{$PATH}, using @samp{hash -p}
+(@pxref{Bourne Shell Builtins}).
+
+@item
+Bash includes a @code{help} builtin for quick reference to shell
+facilities (@pxref{Bash Builtins}).
+
+@item
+The @code{printf} builtin is available to display formatted output
+(@pxref{Bash Builtins}).
+
+@item
+The Bash @code{read} builtin (@pxref{Bash Builtins})
+will read a line ending in @samp{\} with
+the @option{-r} option, and will use the @env{REPLY} variable as a
+default if no non-option arguments are supplied.
+The Bash @code{read} builtin
+also accepts a prompt string with the @option{-p} option and will use
+Readline to obtain the line when given the @option{-e} option.
+The @code{read} builtin also has additional options to control input:
+the @option{-s} option will turn off echoing of input characters as
+they are read, the @option{-t} option will allow @code{read} to time out
+if input does not arrive within a specified number of seconds, the
+@option{-n} option will allow reading only a specified number of
+characters rather than a full line, and the @option{-d} option will read
+until a particular character rather than newline.
+
+@item
+The @code{return} builtin may be used to abort execution of scripts
+executed with the @code{.} or @code{source} builtins
+(@pxref{Bourne Shell Builtins}).
+
+@item
+Bash includes the @code{shopt} builtin, for finer control of shell
+optional capabilities (@pxref{The Shopt Builtin}), and allows these options
+to be set and unset at shell invocation (@pxref{Invoking Bash}).
+
+@item
+Bash has much more optional behavior controllable with the @code{set}
+builtin (@pxref{The Set Builtin}).
+
+@item
+The @samp{-x} (@option{xtrace}) option displays commands other than
+simple commands when performing an execution trace
+(@pxref{The Set Builtin}).
+
+@item
+The @code{test} builtin (@pxref{Bourne Shell Builtins})
+is slightly different, as it implements the @sc{posix} algorithm,
+which specifies the behavior based on the number of arguments.
+
+@item
+Bash includes the @code{caller} builtin, which displays the context of
+any active subroutine call (a shell function or a script executed with
+the @code{.} or @code{source} builtins). This supports the bash
+debugger.
+
+@item
+The @code{trap} builtin (@pxref{Bourne Shell Builtins}) allows a
+@code{DEBUG} pseudo-signal specification, similar to @code{EXIT}.
+Commands specified with a @code{DEBUG} trap are executed before every
+simple command, @code{for} command, @code{case} command,
+@code{select} command, every arithmetic @code{for} command, and before
+the first command executes in a shell function.
+The @code{DEBUG} trap is not inherited by shell functions unless the
+function has been given the @code{trace} attribute or the
+@code{functrace} option has been enabled using the @code{shopt} builtin.
+The @code{extdebug} shell option has additional effects on the
+@code{DEBUG} trap.
+
+The @code{trap} builtin (@pxref{Bourne Shell Builtins}) allows an
+@code{ERR} pseudo-signal specification, similar to @code{EXIT} and @code{DEBUG}.
+Commands specified with an @code{ERR} trap are executed after a simple
+command fails, with a few exceptions.
+The @code{ERR} trap is not inherited by shell functions unless the
+@code{-o errtrace} option to the @code{set} builtin is enabled.
+
+The @code{trap} builtin (@pxref{Bourne Shell Builtins}) allows a
+@code{RETURN} pseudo-signal specification, similar to
+@code{EXIT} and @code{DEBUG}.
+Commands specified with an @code{RETURN} trap are executed before
+execution resumes after a shell function or a shell script executed with
+@code{.} or @code{source} returns.
+The @code{RETURN} trap is not inherited by shell functions unless the
+function has been given the @code{trace} attribute or the
+@code{functrace} option has been enabled using the @code{shopt} builtin.
+
+@item
+The Bash @code{type} builtin is more extensive and gives more information
+about the names it finds (@pxref{Bash Builtins}).
+
+@item
+The Bash @code{umask} builtin permits a @option{-p} option to cause
+the output to be displayed in the form of a @code{umask} command
+that may be reused as input (@pxref{Bourne Shell Builtins}).
+
+@item
+Bash implements a @code{csh}-like directory stack, and provides the
+@code{pushd}, @code{popd}, and @code{dirs} builtins to manipulate it
+(@pxref{The Directory Stack}).
+Bash also makes the directory stack visible as the value of the
+@env{DIRSTACK} shell variable.
+
+@item
+Bash interprets special backslash-escaped characters in the prompt
+strings when interactive (@pxref{Controlling the Prompt}).
+
+@item
+The Bash restricted mode is more useful (@pxref{The Restricted Shell});
+the SVR4.2 shell restricted mode is too limited.
+
+@item
+The @code{disown} builtin can remove a job from the internal shell
+job table (@pxref{Job Control Builtins}) or suppress the sending
+of @code{SIGHUP} to a job when the shell exits as the result of a
+@code{SIGHUP}.
+
+@item
+Bash includes a number of features to support a separate debugger for
+shell scripts.
+
+@item
+The SVR4.2 shell has two privilege-related builtins
+(@code{mldmode} and @code{priv}) not present in Bash.
+
+@item
+Bash does not have the @code{stop} or @code{newgrp} builtins.
+
+@item
+Bash does not use the @env{SHACCT} variable or perform shell accounting.
+
+@item
+The SVR4.2 @code{sh} uses a @env{TIMEOUT} variable like Bash uses
+@env{TMOUT}.
+
+@end itemize
+
+@noindent
+More features unique to Bash may be found in @ref{Bash Features}.
+
+
+@appendixsec Implementation Differences From The SVR4.2 Shell
+
+Since Bash is a completely new implementation, it does not suffer from
+many of the limitations of the SVR4.2 shell. For instance:
+
+@itemize @bullet
+
+@item
+Bash does not fork a subshell when redirecting into or out of
+a shell control structure such as an @code{if} or @code{while}
+statement.
+
+@item
+Bash does not allow unbalanced quotes. The SVR4.2 shell will silently
+insert a needed closing quote at @code{EOF} under certain circumstances.
+This can be the cause of some hard-to-find errors.
+
+@item
+The SVR4.2 shell uses a baroque memory management scheme based on
+trapping @code{SIGSEGV}. If the shell is started from a process with
+@code{SIGSEGV} blocked (e.g., by using the @code{system()} C library
+function call), it misbehaves badly.
+
+@item
+In a questionable attempt at security, the SVR4.2 shell,
+when invoked without the @option{-p} option, will alter its real
+and effective @sc{uid} and @sc{gid} if they are less than some
+magic threshold value, commonly 100.
+This can lead to unexpected results.
+
+@item
+The SVR4.2 shell does not allow users to trap @code{SIGSEGV},
+@code{SIGALRM}, or @code{SIGCHLD}.
+
+@item
+The SVR4.2 shell does not allow the @env{IFS}, @env{MAILCHECK},
+@env{PATH}, @env{PS1}, or @env{PS2} variables to be unset.
+
+@item
+The SVR4.2 shell treats @samp{^} as the undocumented equivalent of
+@samp{|}.
+
+@item
+Bash allows multiple option arguments when it is invoked (@code{-x -v});
+the SVR4.2 shell allows only one option argument (@code{-xv}). In
+fact, some versions of the shell dump core if the second argument begins
+with a @samp{-}.
+
+@item
+The SVR4.2 shell exits a script if any builtin fails; Bash exits
+a script only if one of the @sc{posix} special builtins fails, and
+only for certain failures, as enumerated in the @sc{posix} standard.
+
+@item
+The SVR4.2 shell behaves differently when invoked as @code{jsh}
+(it turns on job control).
+@end itemize
+
+@node GNU Free Documentation License
+@appendix GNU Free Documentation License
+
+@include fdl.texi
+
+@node Indexes
+@appendix Indexes
+
+@menu
+* Builtin Index:: Index of Bash builtin commands.
+* Reserved Word Index:: Index of Bash reserved words.
+* Variable Index:: Quick reference helps you find the
+ variable you want.
+* Function Index:: Index of bindable Readline functions.
+* Concept Index:: General index for concepts described in
+ this manual.
+@end menu
+
+@node Builtin Index
+@appendixsec Index of Shell Builtin Commands
+@printindex bt
+
+@node Reserved Word Index
+@appendixsec Index of Shell Reserved Words
+@printindex rw
+
+@node Variable Index
+@appendixsec Parameter and Variable Index
+@printindex vr
+
+@node Function Index
+@appendixsec Function Index
+@printindex fn
+
+@node Concept Index
+@appendixsec Concept Index
+@printindex cp
+
+@bye
Copyright (C) 1988-2013 Free Software Foundation, Inc.
@end ignore
-@set LASTCHANGE Tue Jan 8 15:50:49 EST 2013
+@set LASTCHANGE Sat Mar 2 20:26:13 EST 2013
@set EDITION 4.2
@set VERSION 4.2
-@set UPDATED 8 January 2013
-@set UPDATED-MONTH January 2013
+@set UPDATED 2 March 2013
+@set UPDATED-MONTH March 2013
--- /dev/null
+@ignore
+Copyright (C) 1988-2013 Free Software Foundation, Inc.
+@end ignore
+
+@set LASTCHANGE Tue Jan 8 15:50:49 EST 2013
+
+@set EDITION 4.2
+@set VERSION 4.2
+@set UPDATED 8 January 2013
+@set UPDATED-MONTH January 2013
-# based on the cd completion function from the bash_completion package
+# cdfunc - example completion function for cd
+#
+# based on the cd completion function from the bash_completion package
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 2011 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
_comp_cd()
{
local IFS=$' \t\n' # normalize IFS
--- /dev/null
+# based on the cd completion function from the bash_completion package
+_comp_cd()
+{
+ local IFS=$' \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
+
+ # append slash to passed directory name that is the only completion.
+ # readline will not do this if we complete from CDPATH
+ if [[ ${#COMPREPLY[@]} -eq 1 ]]; then
+ i=${COMPREPLY[0]} # shorthand
+ if [[ "$cur" == "$i" ]] && [[ "$i" != "*/" ]]; then
+ COMPREPLY[0]+=/
+ fi
+ fi
+ return 0
+}
+
+complete -o filenames -o nospace -o bashdefault -F _comp_cd cd
#
# Completion examples
#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 2002 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
#
# This encapsulates the default bash completion code
--- /dev/null
+#
+# Completion examples
+#
+
+#
+# This encapsulates the default bash completion code
+# call with the word to be completed as $1
+#
+# Since programmable completion does not use the bash default completions
+# or the readline default of filename completion when the compspec does
+# not generate any matches, this may be used as a `last resort' in a
+# completion function to mimic the default bash completion behavior.
+#
+_bash_def_completion ()
+{
+ local h t
+ COMPREPLY=()
+
+ # command substitution
+ if [[ "$1" == \$\(* ]]; then
+ t=${1#??}
+ COMPREPLY=( $(compgen -c -P '$(' $t) )
+ fi
+ # variables with a leading `${'
+ if [ ${#COMPREPLY[@]} -eq 0 ] && [[ "$1" == \$\{* ]]; then
+ t=${1#??}
+ COMPREPLY=( $(compgen -v -P '${' -S '}' $t) )
+ fi
+ # variables with a leading `$'
+ if [ ${#COMPREPLY[@]} -eq 0 ] && [[ "$1" == \$* ]]; then
+ t=${1#?}
+ COMPREPLY=( $(compgen -v -P '$' $t ) )
+ fi
+ # username expansion
+ if [ ${#COMPREPLY[@]} -eq 0 ] && [[ "$1" == ~* ]] && [[ "$1" != */* ]]; then
+ t=${1#?}
+ COMPREPLY=( $( compgen -u -P '~' $t ) )
+ fi
+ # hostname
+ if [ ${#COMPREPLY[@]} -eq 0 ] && [[ "$1" == *@* ]]; then
+ h=${1%%@*}
+ t=${1#*@}
+ COMPREPLY=( $( compgen -A hostname -P "${h}@" $t ) )
+ fi
+ # glob pattern
+ if [ ${#COMPREPLY[@]} -eq 0 ]; then
+ # sh-style glob pattern
+ if [[ $1 == *[*?[]* ]]; then
+ COMPREPLY=( $( compgen -G "$1" ) )
+ # ksh-style extended glob pattern - must be complete
+ elif shopt -q extglob && [[ $1 == *[?*+\!@]\(*\)* ]]; then
+ COMPREPLY=( $( compgen -G "$1" ) )
+ fi
+ fi
+
+ # final default is filename completion
+ if [ ${#COMPREPLY[@]} -eq 0 ]; then
+ COMPREPLY=( $(compgen -f "$1" ) )
+ fi
+}
+
+#
+# Return 1 if $1 appears to contain a redirection operator. Handles backslash
+# quoting (barely).
+#
+_redir_op()
+{
+ case "$1" in
+ *\\'[\<\>]'*) return 1;;
+ *[\<\>]*) return 0;;
+ *) return 1;;
+ esac
+}
+
+
+# _redir_test tests the current word ($1) and the previous word ($2) for
+# redirection operators and does filename completion on the current word
+# if either one contains a redirection operator
+_redir_test()
+{
+ if _redir_op "$1" ; then
+ COMPREPLY=( $( compgen -f "$1" ) )
+ return 0
+ elif _redir_op "$2" ; then
+ COMPREPLY=( $( compgen -f "$1" ) )
+ return 0
+ fi
+ return 1
+}
+
+# optional, but without this you can't use extended glob patterns
+shopt -s extglob
+
+#
+# Easy ones for the shell builtins
+#
+# nothing for: alias, break, continue, dirs, echo, eval, exit, getopts,
+# let, logout, popd, printf, pwd, return, shift, suspend, test, times,
+# umask
+#
+
+complete -f -- . source
+complete -A enabled builtin
+complete -d cd
+
+# this isn't exactly right yet -- needs to skip shell functions and
+# do $PATH lookup (or do compgen -c and filter out matches that also
+# appear in compgen -A function)
+complete -c command
+
+# could add -S '=', but that currently screws up because readline appends
+# a space unconditionally
+
+complete -v export local readonly
+complete -A helptopic help # currently same as builtins
+
+complete -d pushd
+
+complete -A shopt shopt
+
+complete -c type
+
+complete -a unalias
+complete -v unset
+
+#
+# Job control builtins: fg, bg, disown, kill, wait
+# kill not done yet
+#
+
+complete -A stopped -P '%' bg
+complete -j -P '%' fg jobs disown
+
+# this is not quite right at this point
+
+_wait_func ()
+{
+ local cur
+ cur=${COMP_WORDS[COMP_CWORD]}
+
+ case "$cur" in
+ %*) COMPREPLY=( $(compgen -A running -P '%' ${cur#?} ) ) ;;
+ [0-9]*) COMPREPLY=( $(jobs -p | grep ^${cur}) ) ;;
+ *) COMPREPLY=( $(compgen -A running -P '%') $(jobs -p) )
+ ;;
+ esac
+}
+complete -F _wait_func wait
+
+#
+# more complicated things, several as yet unimplemented
+#
+
+#complete -F _bind_func bind
+
+_declare_func()
+{
+ local cur prev nflag opts
+
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ COMPREPLY=()
+ if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
+ COMPREPLY=(-a -f -F -i -p -r -t -x)
+ return 0;
+ fi
+ if [[ $cur == '+' ]]; then
+ COMPREPLY=(+i +t +x)
+ return 0;
+ fi
+ if [[ $prev == '-p' ]]; then
+ COMPREPLY=( $(compgen -v $cur) )
+ return 0;
+ fi
+ return 1
+}
+complete -F _declare_func declare typeset
+
+_enable_func()
+{
+ local cur prev nflag opts
+
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ COMPREPLY=()
+ if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
+ COMPREPLY=(-a -d -f -n -p -s)
+ return 0;
+ fi
+ if [[ $prev == '-f' ]]; then
+ COMPREPLY=( $( compgen -f $cur ) )
+ return 0;
+ fi
+ for opts in "${COMP_WORDS[@]}" ; do
+ if [[ $opts == -*n* ]]; then nflag=1; fi
+ done
+
+ if [ -z "$nflag" ] ; then
+ COMPREPLY=( $( compgen -A enabled $cur ) )
+ else
+ COMPREPLY=( $( compgen -A disabled $cur ) )
+ fi
+ return 0;
+}
+complete -F _enable_func enable
+
+_exec_func()
+{
+ local cur prev
+
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
+ COMPREPLY=(-a -c -l)
+ return 0;
+ fi
+ if [[ $prev != -*a* ]]; then
+ COMPREPLY=( $( compgen -c $cur ) )
+ return 0
+ fi
+ return 1;
+}
+complete -F _exec_func exec
+
+_fc_func()
+{
+ local cur prev
+
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
+ COMPREPLY=(-e -n -l -r -s)
+ return 0;
+ fi
+ if [[ $prev == -*e ]]; then
+ COMPREPLY=( $(compgen -c $cur) )
+ return 0
+ fi
+ return 1
+}
+complete -F _fc_func fc
+
+_hash_func()
+{
+ local cur prev
+
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
+ COMPREPLY=(-p -r -t)
+ return 0;
+ fi
+
+ if [[ $prev == '-p' ]]; then
+ COMPREPLY=( $( compgen -f $cur ) )
+ return 0;
+ fi
+ COMPREPLY=( $( compgen -c $cur ) )
+ return 0
+}
+complete -F _hash_func hash
+
+_history_func()
+{
+ local cur prev
+
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ COMPREPLY=()
+ if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
+ COMPREPLY=(-a -c -d -n -r -w -p -s)
+ return 0;
+ fi
+ if [[ $prev == -[anrw] ]]; then
+ COMPREPLY=( $( compgen -f $cur ) )
+ fi
+ return 0
+}
+complete -F _history_func history
+
+#complete -F _read_func read
+
+_set_func ()
+{
+ local cur prev
+
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ COMPREPLY=()
+
+ _redir_test "$cur" "$prev" && return 0;
+
+ if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
+ COMPREPLY=(-a -b -e -f -k -m -n -o -p -t -u -v -x -B -C -H -P --)
+ return 0;
+ fi
+ if [[ $cur == '+' ]]; then
+ COMPREPLY=(+a +b +e +f +k +m +n +o +p +t +u +v +x +B +C +H +P)
+ return 0;
+ fi
+ if [[ $prev == [+-]o ]]; then
+ COMPREPLY=( $(compgen -A setopt $cur) )
+ return 0;
+ fi
+ return 1;
+}
+complete -F _set_func set
+
+_trap_func ()
+{
+ local cur
+ cur=${COMP_WORDS[COMP_CWORD]}
+
+ if (( $COMP_CWORD <= 1 )) || [[ $cur == '-' ]]; then
+ COMPREPLY=(-l -p)
+ return 0;
+ fi
+ COMPREPLY=( $( compgen -A signal ${cur}) )
+ return 0
+}
+complete -F _trap_func trap
+
+#
+# meta-completion (completion for complete/compgen)
+#
+_complete_meta_func()
+{
+ local cur prev cmd
+ COMPREPLY=()
+
+ cmd=$1
+
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ _redir_test "$cur" "$prev" && return 0;
+
+ if (( $COMP_CWORD <= 1 )) || [[ "$cur" == '-' ]]; then
+ case "$cmd" in
+ complete) COMPREPLY=(-a -b -c -d -e -f -j -k -s -v -u -r -p -A -G -W -P -S -X -F -C);;
+ compgen) COMPREPLY=(-a -b -c -d -e -f -j -k -s -v -u -A -G -W -P -S -X -F -C);;
+ esac
+ return 0
+ fi
+
+ if [[ $prev == -A ]]; then
+ COMPREPLY=(alias arrayvar binding builtin command directory \
+disabled enabled export file 'function' helptopic hostname job keyword \
+running service setopt shopt signal stopped variable)
+ return 0
+ elif [[ $prev == -F ]]; then
+ COMPREPLY=( $( compgen -A function $cur ) )
+ elif [[ $prev == -C ]]; then
+ COMPREPLY=( $( compgen -c $cur ) )
+ else
+ COMPREPLY=( $( compgen -c $cur ) )
+ fi
+ return 0
+}
+complete -F _complete_meta_func complete compgen
+
+#
+# some completions for shell reserved words
+#
+#complete -c -k time do if then else elif '{'
+
+#
+# external commands
+#
+
+complete -e printenv
+
+complete -c nohup exec nice eval trace truss strace sotruss gdb
+
+_make_targets ()
+{
+ local mdef makef gcmd cur prev i
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ # if prev argument is -f, return possible filename completions.
+ # we could be a little smarter here and return matches against
+ # `makefile Makefile *.mk', whatever exists
+ case "$prev" in
+ -*f) COMPREPLY=( $(compgen -f $cur ) ); return 0;;
+ esac
+
+ # if we want an option, return the possible posix options
+ case "$cur" in
+ -) COMPREPLY=(-e -f -i -k -n -p -q -r -S -s -t); return 0;;
+ esac
+
+ # make reads `makefile' before `Makefile'
+ # GNU make reads `GNUmakefile' before all other makefiles, but we
+ # check that we're completing `gmake' before checking for it
+ if [ -f GNUmakefile ] && [ ${COMP_WORDS[0]} == gmake ]; then
+ mdef=GNUmakefile
+ elif [ -f makefile ]; then
+ mdef=makefile
+ elif [ -f Makefile ]; then
+ mdef=Makefile
+ else
+ mdef=*.mk # local convention
+ fi
+
+ # before we scan for targets, see if a makefile name was specified
+ # with -f
+ for (( i=0; i < ${#COMP_WORDS[@]}; i++ )); do
+ if [[ ${COMP_WORDS[i]} == -*f ]]; then
+ eval makef=${COMP_WORDS[i+1]} # eval for tilde expansion
+ break
+ fi
+ done
+
+ [ -z "$makef" ] && makef=$mdef
+
+ # if we have a partial word to complete, restrict completions to
+ # matches of that word
+ if [ -n "$2" ]; then gcmd='grep "^$2"' ; else gcmd=cat ; fi
+
+ # if we don't want to use *.mk, we can take out the cat and use
+ # test -f $makef and input redirection
+ COMPREPLY=( $(cat $makef 2>/dev/null | awk 'BEGIN {FS=":"} /^[^.# ][^=]*:/ {print $1}' | tr -s ' ' '\012' | sort -u | eval $gcmd ) )
+}
+complete -F _make_targets -X '+($*|*.[cho])' make gmake pmake
+
+_umount_func ()
+{
+ COMPREPLY=( $(mount | awk '{print $1}') )
+}
+complete -F _umount_func umount
+
+_configure_func ()
+{
+ case "$2" in
+ -*) ;;
+ *) return ;;
+ esac
+
+ case "$1" in
+ \~*) eval cmd=$1 ;;
+ *) cmd="$1" ;;
+ esac
+
+ COMPREPLY=( $("$cmd" --help | awk '{if ($1 ~ /--.*/) print $1}' | grep ^"$2" | sort -u) )
+}
+complete -F _configure_func configure
+
+complete -W '"${GROUPS[@]}"' newgrp
+
+complete -f chown ln more cat
+complete -d mkdir rmdir
+complete -f strip
+
+complete -f -X '*.gz' gzip
+complete -f -X '*.bz2' bzip2
+complete -f -X '*.Z' compress
+complete -f -X '!*.+(gz|tgz|Gz)' gunzip gzcat zcat zmore
+complete -f -X '!*.Z' uncompress zmore zcat
+complete -f -X '!*.bz2' bunzip2 bzcat
+complete -f -X '!*.zip' unzip
+complete -f -X '!*.+(gif|jpg|jpeg|GIF|JPG|JPEG|bmp)' xv
+
+complete -f -X '!*.pl' perl perl5
+
+complete -A hostname rsh telnet rlogin ftp ping xping host traceroute nslookup
+complete -A hostname rxterm rxterm3 rxvt2
+
+complete -u su
+complete -g newgrp groupdel groupmod
+
+complete -f -X '!*.+(ps|PS)' gs gv ghostview psselect pswrap
+complete -f -X '!*.+(dvi|DVI)' dvips xdvi dviselect dvitype catdvi
+complete -f -X '!*.+(pdf|PDF)' acroread4
+complete -f -X '!*.texi*' makeinfo texi2dvi texi2html
+complete -f -X '!*.+(tex|TEX)' tex latex slitex
+
+complete -f -X '!*.+(mp3|MP3)' mpg123
+complete -f -X '!*.+(htm|html)' links w3m lynx
+
+#
+# other possibilities, left as exercises
+#
+#complete -F _find_func find
+#complete -F _man_func man
+#complete -F _stty_func stty
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 2002 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
# from zsh, just for testing
complete -A stopped -P '%' bg
complete -j -P '%' fg jobs disown
--- /dev/null
+# from zsh, just for testing
+complete -A stopped -P '%' bg
+complete -j -P '%' fg jobs disown
+# this is wrong at this point
+complete -j -P '%' -W '$(ps -x | tail +2 | cut -c1-5)' wait
+complete -c type
+complete -a unalias
+complete -v getopts read unset
+complete -v -S '=' declare export local readonly typeset
+complete -f -- . source
+complete -A shopt shopt
+complete -e printenv
+
+complete -A helptopic help
+
+complete -c nohup exec nice eval
+complete -c -k time
+
+complete -A signal trap kill
+
+complete -f chown ln more cat
+complete -d mkdir rmdir
+
+complete -f -X '!*.+(gz|tgz)' gunzip gzcat zcat zmore
+complete -f -X '!*.Z' uncompress zmore zcat
+complete -f gzip
+
+complete -d cd pushd popd
+
+complete -A hostname rsh telnet rlogin ftp
+
+complete -u su
+complete -W '"${GROUPS[@]}"' newgrp
+complete -g groupdel groupmod
+
+complete -f -X '!*.+(ps|PS)' gs gv ghostview
+complete -f -X '!*.dvi' dvips xdvi
+complete -f -X '!*.pdf' acroread
+
+complete -f -X '!*.texi*' makeinfo texi2dvi texi2html
+
+complete -c gdb make
+
+complete -p gs
+complete -p
+
+complete -r xdvi
+complete -r notthere
+complete -r
+complete
--- /dev/null
+#Date: Wed, 31 Jan 2001 12:53:56 -0800
+#From: Aaron Smith <aaron@mutex.org>
+#To: freebsd-ports@freebsd.org
+#Subject: useful bash completion function for pkg commands
+#Message-ID: <20010131125356.G52003@gelatinous.com>
+
+#hi all. i just wanted to share this bash completion function i wrote that
+#completes package names for pkg_info and pkg_delete. i find this a great
+#help when dealing with port management. programmed completion requires
+#bash-2.04.
+
+_pkg_func ()
+{
+ local cur
+
+ cur=${COMP_WORDS[COMP_CWORD]}
+
+ if [[ $cur == '-' ]]; then
+ if [[ ${COMP_WORDS[0]} == 'pkg_info' ]]; then
+ COMPREPLY=(-a -c -d -D -i -k -r -R -p -L -q -I -m -v -e -l)
+ return 0;
+ elif [[ ${COMP_WORDS[0]} == 'pkg_delete' ]]; then
+ COMPREPLY=(-v -D -d -n -f -p)
+ return 0;
+ fi
+ fi
+
+ COMPREPLY=( $(compgen -d /var/db/pkg/$cur | sed sN/var/db/pkg/NNg) )
+ return 0
+}
+complete -F _pkg_func pkg_delete pkg_info
--- /dev/null
+#
+# Originally from:
+#
+#Message-ID: <3B13EC65.179451AE@wanadoo.fr>
+#Date: Tue, 29 May 2001 20:37:25 +0200
+#From: Manu Rouat <emmanuel.rouat@wanadoo.fr>
+#Subject: [bash] Universal command options completion?
+#
+#
+#In the recent versions of bash (after 2.04) programmable
+#completion is available. A useful completion function
+#is , for a particular command, to enumerate all flags
+#that can be used in the command. Now, most GNU unix
+#commands have so-called 'long options' for example:
+#
+#ls --color=always --no-group --size
+#
+#and these are all listed when you issue a '--help' flag.
+#So the idea is to use that, then parse the output of the
+#'--help' and reinject this to compgen. The basis of the
+#following 'universal' completion funtion was the _configure_func'
+#written by Ian McDonnald (or is it Chet Ramey ?)
+#A dedicated function will always be better, but this is quite
+#convenient. I chose to use 'long options' because they are
+#easy to parse and explicit too (it's the point I guess...)
+#Lots of room for improvement !
+
+_longopt_func ()
+{
+ case "$2" in
+ -*) ;;
+ *) return ;;
+ esac
+
+ case "$1" in
+ \~*) eval cmd=$1 ;;
+ *) cmd="$1" ;;
+ esac
+ COMPREPLY=( $("$cmd" --help | sed -e '/--/!d' -e 's/.*--\([^ ]*\).*/--\1/'| \
+grep ^"$2" |sort -u) )
+}
+
+complete -o default -F _longopt_func ldd wget bash id info # some examples that work
--- /dev/null
+#####
+#To: chet@po.cwru.edu, sarahmckenna@lucent.com
+#Message-Id: <slrn8mqioc.msb.ian@lovelorn.linuxcare.com>
+#Posted-To: comp.unix.shell, gnu.bash.bug
+#Subject: bash 2.04 programmable completion examples
+#Reply-To: ian@linuxcare.com, ian@caliban.org
+#Summary: examples of programmable completion for bash 2.04
+#Date: Thu, 13 Jul 2000 00:52:33 -0400 (EDT)
+#From: ianmacd@linuxcare.com (Ian Macdonald)
+#####
+
+#########################################################################
+# Turn on extended globbing
+shopt -s extglob
+
+# A lot of the following one-liners were taken directly from the
+# completion examples provided with the bash 2.04 source distribution
+
+# Make directory commands see only directories
+complete -d cd mkdir rmdir pushd
+
+# Make file commands see only files
+complete -f cat less more chown ln strip
+complete -f -X '*.gz' gzip
+complete -f -X '*.Z' compress
+complete -f -X '!*.+(Z|gz|tgz|Gz)' gunzip zcat zmore
+complete -f -X '!*.Z' uncompress zmore zcat
+complete -f -X '!*.+(gif|jpg|jpeg|GIF|JPG|bmp)' ee xv
+complete -f -X '!*.+(ps|PS|ps.gz)' gv
+complete -f -X '!*.+(dvi|DVI)' dvips xdvi dviselect dvitype
+complete -f -X '!*.+(pdf|PDF)' acroread xpdf
+complete -f -X '!*.texi*' makeinfo texi2dvi texi2html
+complete -f -X '!*.+(tex|TEX)' tex latex slitex
+complete -f -X '!*.+(mp3|MP3)' mpg123
+
+# kill sees only signals
+complete -A signal kill -P '%'
+
+# user commands see only users
+complete -u finger su usermod userdel passwd
+
+# bg completes with stopped jobs
+complete -A stopped -P '%' bg
+
+# other job commands
+complete -j -P '%' fg jobs disown
+
+# network commands complete with hostname
+complete -A hostname ssh rsh telnet rlogin ftp ping fping host traceroute \
+ nslookup
+
+# export and others complete with shell variables
+complete -v export local readonly unset
+
+# set completes with set options
+complete -A setopt set
+
+# shopt completes with shopt options
+complete -A shopt shopt
+
+# helptopics
+complete -A helptopic help
+
+# unalias completes with aliases
+complete -a unalias
+
+# various commands complete with commands
+complete -c command type nohup exec nice eval strace gdb
+
+# bind completes with readline bindings (make this more intelligent)
+complete -A binding bind
+
+# Now we get to the meat of the file, the functions themselves. Some
+# of these are works in progress. Most assume GNU versions of the
+# tools in question and may require modifications for use on vanilla
+# UNIX systems.
+#
+# A couple of functions may have non-portable, Linux specific code in
+# them, but this will be noted where applicable
+
+
+# GNU chown(1) completion. This should be expanded to allow the use of
+# ':' as well as '.' as the user.group separator.
+#
+_chown ()
+{
+ local cur prev user group
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ # do not attempt completion if we're specifying an option
+ if [ "${cur:0:1}" = "-" ]; then return 0; fi
+
+ # first parameter on line or first since an option?
+ if [ $COMP_CWORD -eq 1 ] || [ "${prev:0:1}" = "-" ]; then
+ case "$cur" in
+ [a-zA-Z]*.*)
+ user=${cur%.*}
+ group=${cur#*.}
+ COMPREPLY=( $( awk 'BEGIN {FS=":"} \
+ {if ($1 ~ /^'$group'/) print $1}' \
+ /etc/group ) )
+ for (( i=0; i < ${#COMPREPLY[@]}; i++ )); do
+ COMPREPLY[i]=$user.${COMPREPLY[i]}
+ done
+ return 0
+ ;;
+ *)
+ COMPREPLY=( $( compgen -u $cur -S '.' ) )
+ return 0
+ ;;
+ esac
+ else
+ COMPREPLY=( $( compgen -f $cur ) )
+ fi
+
+ return 0
+}
+complete -F _chown chown
+
+# umount(8) completion. This relies on the mount point being the third
+# space-delimited field in the output of mount(8)
+#
+_umount ()
+{
+ local cur
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+
+ # could rewrite the cut | grep to be a sed command, but this is
+ # clearer and doesn't result in much overhead
+ COMPREPLY=( $( mount | cut -d' ' -f 3 | grep ^$cur) )
+ return 0
+}
+complete -F _umount umount
+
+# GID completion. This will get a list of all valid group names from
+# /etc/group and should work anywhere.
+#
+_gid_func ()
+{
+ local cur
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+ COMPREPLY=( $( awk 'BEGIN {FS=":"} {if ($1 ~ /^'$cur'/) print $1}' \
+ /etc/group ) )
+ return 0
+}
+complete -F _gid_func groupdel groupmod
+
+# mount(8) completion. This will pull a list of possible mounts out of
+# /etc/fstab, unless the word being completed contains a ':', which
+# would indicate the specification of an NFS server. In that case, we
+# query the server for a list of all available exports and complete on
+# that instead.
+#
+_mount ()
+
+{ local cur
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+
+ case "$cur" in
+ *:*)
+ COMPREPLY=( $( /usr/sbin/showmount -e --no-headers ${cur%%:*} |\
+ grep ^${cur#*:} | awk '{print $1}'))
+ return 0
+ ;;
+ *)
+ COMPREPLY=( $( awk '{if ($2 ~ /\//) print $2}' /etc/fstab | \
+ grep ^$cur ))
+ return 0
+ ;;
+ esac
+}
+complete -F _mount mount
+
+# Linux rmmod(1) completion. This completes on a list of all currently
+# installed kernel modules.
+#
+_rmmod ()
+{
+ local cur
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+
+ COMPREPLY=($( lsmod | awk '{if (NR != 1 && $1 ~ /^'$cur'/) print $1}'))
+ return 0
+}
+complete -F _rmmod rmmod
+
+# Linux insmod(1) completion. This completes on a list of all
+# available modules for the version of the kernel currently running.
+#
+_insmod ()
+{
+ local cur modpath
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+ modpath=/lib/modules/`uname -r`
+
+ COMPREPLY=($( ls -R $modpath | sed -ne 's/^\('$cur'.*\)\.o$/\1/p'))
+ return 0
+}
+complete -F _insmod insmod depmod modprobe
+
+# man(1) completion. This relies on the security enhanced version of
+# GNU locate(1). UNIX variants having non-numeric man page sections
+# other than l, m and n should add the appropriate sections to the
+# first clause of the case statement.
+#
+# This is Linux specific, in that 'man <section> <page>' is the
+# expected syntax. This allows one to do something like
+# 'man 3 str<tab>' to obtain a list of all string handling syscalls on
+# the system.
+#
+_man ()
+{
+ local cur prev
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ case "$prev" in
+ [0-9lmn])
+ COMPREPLY=($( slocate -ql 0 -r '/man/man'$prev'/'$cur | \
+ sed -ne 's/^.*\/\('$cur'[^.\/]*\)\..*$/\1/p' ))
+ return 0
+ ;;
+ *)
+ COMPREPLY=($( slocate -ql 0 -r '/man/man./'$cur | \
+ sed -ne 's/^.*\/\('$cur'[^.\/]*\)\..*$/\1/p' ))
+ return 0
+ ;;
+ esac
+}
+complete -F _man man
+
+# Linux killall(1) completion. This wouldn't be much use on, say,
+# Solaris, where killall does exactly that: kills ALL processes.
+#
+# This could be improved. For example, it currently doesn't take
+# command line options into account
+#
+_killall ()
+{
+ local cur prev
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ case "$prev" in
+ -[A-Z0-9]*)
+ # get a list of processes (the first sed evaluation
+ # takes care of swapped out processes, the second
+ # takes care of getting the basename of the process)
+ COMPREPLY=( $( ps ahx | awk '{if ($5 ~ /^'$cur'/) print $5}' | \
+ sed -e 's#[]\[]##g' -e 's#^.*/##' ))
+ return 0
+ ;;
+ esac
+
+ # first parameter can be either a signal or a process
+ if [ $COMP_CWORD -eq 1 ]; then
+ # standard signal completion is rather braindead, so we need
+ # to hack around to get what we want here, which is to
+ # complete on a dash, followed by the signal name minus
+ # the SIG prefix
+ COMPREPLY=( $( compgen -A signal SIG${cur#-} ))
+ for (( i=0; i < ${#COMPREPLY[@]}; i++ )); do
+ COMPREPLY[i]=-${COMPREPLY[i]#SIG}
+ done
+ fi
+
+ # get processes, adding to signals if applicable
+ COMPREPLY=( ${COMPREPLY[*]} $( ps ahx | \
+ awk '{if ($5 ~ /^'$cur'/) print $5}' | \
+ sed -e 's#[]\[]##g' -e 's#^.*/##' ))
+ return 0
+}
+complete -F _killall killall
+
+# GNU find(1) completion. This makes heavy use of ksh style extended
+# globs and contains Linux specific code for completing the parameter
+# to the -fstype option.
+#
+_find ()
+{
+ local cur prev
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]#-}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ case "$prev" in
+ -@(max|min)depth)
+ COMPREPLY=( $( compgen -W '0 1 2 3 4 5 6 7 8 9' ) )
+ return 0
+ ;;
+ -?(a)newer|-fls|-fprint?(0|f))
+ COMPREPLY=( $( compgen -f $cur ) )
+ return 0
+ ;;
+ -fstype)
+ # this is highly non-portable (the option to -d is a tab)
+ COMPREPLY=( $( cut -d' ' -f 2 /proc/filesystems | grep ^$cur ) )
+ return 0
+ ;;
+ -gid)
+ COMPREPLY=( $( awk 'BEGIN {FS=":"} \
+ {if ($3 ~ /^'$cur'/) print $3}' /etc/group ) )
+ return 0
+ ;;
+ -group)
+ COMPREPLY=( $( awk 'BEGIN {FS=":"} \
+ {if ($1 ~ /^'$cur'/) print $1}' /etc/group ) )
+ return 0
+ ;;
+ -?(x)type)
+ COMPREPLY=( $( compgen -W 'b c d p f l s' $cur ) )
+ return 0
+ ;;
+ -uid)
+ COMPREPLY=( $( awk 'BEGIN {FS=":"} \
+ {if ($3 ~ /^'$cur'/) print $3}' /etc/passwd ) )
+ return 0
+ ;;
+ -user)
+ COMPREPLY=( $( compgen -u $cur ) )
+ return 0
+ ;;
+ -[acm]min|-[acm]time|-?(i)?(l)name|-inum|-?(i)path|-?(i)regex| \
+ -links|-perm|-size|-used|-exec|-ok|-printf)
+ # do nothing, just wait for a parameter to be given
+ return 0
+ ;;
+ esac
+
+ # complete using basic options ($cur has had its dash removed here,
+ # as otherwise compgen will bomb out with an error, since it thinks
+ # the dash is an option to itself)
+ COMPREPLY=( $( compgen -W 'daystart depth follow help maxdepth \
+ mindepth mount noleaf version xdev amin anewer atime \
+ cmin cnewer ctime empty false fstype gid group ilname \
+ iname inum ipath iregex links lname mmin mtime name \
+ newer nouser nogroup perm regex size true type uid \
+ used user xtype exec fls fprint fprint0 fprintf ok \
+ print print0 printf prune ls' $cur ) )
+
+ # this removes any options from the list of completions that have
+ # already been specified somewhere on the command line.
+ COMPREPLY=( $( echo "${COMP_WORDS[@]}-" | \
+ (while read -d '-' i; do
+ [ "$i" == "" ] && continue
+ # flatten array with spaces on either side,
+ # otherwise we cannot grep on word boundaries of
+ # first and last word
+ COMPREPLY=" ${COMPREPLY[@]} "
+ # remove word from list of completions
+ COMPREPLY=( ${COMPREPLY/ ${i%% *} / } )
+ done
+ echo ${COMPREPLY[@]})
+ ) )
+
+ # put dashes back
+ for (( i=0; i < ${#COMPREPLY[@]}; i++ )); do
+ COMPREPLY[i]=-${COMPREPLY[i]}
+ done
+
+ return 0
+}
+complete -F _find find
+
+# Linux ifconfig(8) completion
+#
+_ifconfig ()
+{
+ local cur
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+
+ case "${COMP_WORDS[1]}" in
+ -|*[0-9]*)
+ COMPREPLY=( $( compgen -W '-a up down arp promisc allmulti \
+ metric mtu dstaddr netmask add del \
+ tunnel irq io_addr mem_start media \
+ broadcast pointopoint hw multicast \
+ address txqueuelen' $cur ))
+ COMPREPLY=( $( echo " ${COMP_WORDS[@]}" | \
+ (while read -d ' ' i; do
+ [ "$i" == "" ] && continue
+ # flatten array with spaces on either side,
+ # otherwise we cannot grep on word
+ # boundaries of first and last word
+ COMPREPLY=" ${COMPREPLY[@]} "
+ # remove word from list of completions
+ COMPREPLY=( ${COMPREPLY/ $i / } )
+ done
+ echo ${COMPREPLY[@]})
+ ) )
+ return 0
+ ;;
+ esac
+
+ COMPREPLY=( $( ifconfig -a | sed -ne 's/^\('$cur'[^ ]*\).*$/\1/p' ))
+}
+complete -F _ifconfig ifconfig
+
+# Linux ipsec(8) completion (for FreeS/WAN). Very basic.
+#
+_ipsec ()
+{
+ local cur
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+
+ COMPREPLY=( $( compgen -W 'auto barf eroute klipsdebug look manual \
+ pluto ranbits rsasigkey setup showdefaults \
+ showhostkey spi spigrp tncfg whack' $cur ))
+}
+complete -F _ipsec ipsec
+#########################################################################
--- /dev/null
+#####
+#From: ian@linuxcare.com (Ian Macdonald)
+#Newsgroups: comp.unix.shell
+#Subject: More bash 2.04 completions
+#Date: 12 Aug 2000 09:53:40 GMT
+#Organization: Linuxcare, Inc.
+#Lines: 274
+#Message-ID: <slrn8pa7l2.jgm.ian@lovelorn.linuxcare.com>
+#Reply-To: ian@linuxcare.com
+#####
+
+# Turn on extended globbing
+shopt -s extglob
+
+# cvs(1) completion
+#
+_cvs ()
+{
+ local cur prev
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ if [ $COMP_CWORD -eq 1 ] || [ "${prev:0:1}" = "-" ]; then
+ COMPREPLY=( $( compgen -W 'add admin checkout commit diff \
+ export history import log rdiff release remove rtag status \
+ tag update' $cur ))
+ else
+ COMPREPLY=( $( compgen -f $cur ))
+ fi
+ return 0
+}
+complete -F _cvs cvs
+
+# rpm(8) completion. This isn't exhaustive yet, but still provides
+# quite a lot of functionality.
+#
+_rpm()
+{
+ dashify()
+ {
+ local i
+
+ for (( i=0; i < ${#COMPREPLY[@]}; i++ )); do
+ if [ ${#COMPREPLY[i]} -le 2 ]; then
+ COMPREPLY[i]=-${COMPREPLY[i]}
+ else
+ COMPREPLY[i]=--${COMPREPLY[i]}
+ fi
+ done
+ }
+
+ local cur cur_nodash prev
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+ cur_nodash=${cur#-}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ if [ $COMP_CWORD = 1 ]; then
+ # first parameter on line
+ case "$cur" in
+ -b*)
+ COMPREPLY=( $( compgen -W 'ba bb bc bi bl bp bs' \
+ $cur_nodash ) )
+ dashify
+ return 0
+ ;;
+ -t*)
+ COMPREPLY=( $( compgen -W 'ta tb tc ti tl tp ts' \
+ $cur_nodash ) )
+ dashify
+ return 0
+ ;;
+ --*)
+ COMPREPLY=( $( compgen -W 'help version initdb \
+ checksig recompile rebuild resign addsign rebuilddb \
+ showrc setperms setgids' ${cur_nodash#-} ) )
+ dashify;
+ return 0
+ ;;
+ *)
+ COMPREPLY=( $( compgen -W 'b e F i q t U V' \
+ $cur_nodash ) )
+ dashify
+ return 0
+ ;;
+ esac
+ fi
+
+ case "${COMP_WORDS[1]}" in
+ -[iFU]*)
+ # complete on list of relevant options
+ COMPREPLY=( $( compgen -W 'percent force test replacepkgs \
+ replacefiles root excludedocs includedocs noscripts rcfile \
+ ignorearch dbpath prefix ignoreos nodeps allfiles ftpproxy \
+ ftpport justdb httpproxy httpport noorder relocate badreloc \
+ notriggers excludepath ignoresize oldpackage' ${cur_nodash#-} ))
+ dashify;
+ # return if $cur is an option
+ [ "${cur:0:1}" = "-" ] && return 0
+ # add a list of RPMS to possible completions
+ COMPREPLY=( ${COMPREPLY[@]} $( compgen -G $cur\*.rpm ) )
+ return 0
+ ;;
+ -qp*)
+ # complete on list of relevant options
+ COMPREPLY=( $( compgen -W 'scripts root rcfile whatprovides \
+ whatrequires requires triggeredby ftpport ftpproxy httpproxy \
+ httpport provides triggers dump changelog dbpath filesbypkg' \
+ ${cur_nodash#-} ) )
+ dashify;
+ # return if $cur is an option
+ [ "${cur:0:1}" = "-" ] && return 0
+ # add a list of RPMS to possible completions
+ COMPREPLY=( ${COMPREPLY[@]} $( compgen -G $cur\*.rpm ) )
+ return 0
+ ;;
+ -*f)
+ # standard filename completion
+ COMPREPLY=( $( compgen -f $cur ) )
+ return 0
+ ;;
+ -e)
+ # complete on list of relevant options
+ COMPREPLY=( $( compgen -W 'allmatches noscripts notriggers \
+ nodeps test' ${cur_nodash#-} ) )
+ dashify;
+ # return if $cur is an option
+ [ "${cur:0:1}" = "-" ] && return 0
+ # complete on basename of installed RPMs
+ COMPREPLY=( $( rpm -qa | \
+ sed -ne 's/^\('$cur'.*\)-[0-9a-zA-Z._]\+-[0-9.]\+$/\1/p' ) )
+ return 0
+ ;;
+ -qa*)
+ # complete on list of relevant options
+ COMPREPLY=( $( compgen -W 'scripts root rcfile whatprovides \
+ whatrequires requires triggeredby ftpport ftpproxy httpproxy \
+ httpport provides triggers dump changelog dbpath specfile \
+ querybynumber last filesbypkg' ${cur_nodash#-} ) )
+ dashify;
+ return 0
+ ;;
+ -q*)
+ # complete on list of relevant options
+ COMPREPLY=( $( compgen -W 'scripts root rcfile whatprovides \
+ whatrequires requires triggeredby ftpport ftpproxy httpproxy \
+ httpport provides triggers dump changelog dbpath specfile \
+ querybynumber last filesbypkg' ${cur_nodash#-} ) )
+ dashify;
+ # return if $cur is an option
+ [ "${cur:0:1}" = "-" ] && return 0
+ # add a list of RPMS to possible completions
+ COMPREPLY=( ${COMPREPLY[@]} $( rpm -qa | \
+ sed -ne 's/^\('$cur'.*\)-[0-9a-zA-Z._]\+-[0-9.]\+$/\1/p' ) )
+ return 0
+ ;;
+ -[Vy]*)
+ # complete on list of relevant options
+ COMPREPLY=( $( compgen -W 'root rcfile dbpath nodeps nofiles \
+ noscripts nomd5 nopgp' ${cur_nodash#-} ) )
+ dashify;
+ # return if $cur is an option
+ [ "${cur:0:1}" = "-" ] && return 0
+ # add a list of RPMS to possible completions
+ COMPREPLY=( ${COMPREPLY[@]} $( rpm -qa | \
+ sed -ne 's/^\('$cur'.*\)-[0-9a-zA-Z._]\+-[0-9.]\+$/\1/p' ) )
+ return 0
+ ;;
+ -b*)
+ # complete on list of relevant options
+ COMPREPLY=( $( compgen -W 'short-circuit timecheck clean \
+ rmsource test sign buildroot target buildarch buildos' \
+ ${cur_nodash#-} ) )
+ dashify;
+ # return if $cur is an option
+ [ "${cur:0:1}" = "-" ] && return 0
+ # complete on .spec files
+ COMPREPLY=( $( compgen -G $cur\*.spec ) )
+ return 0
+ ;;
+ -t*)
+ # complete on list of relevant options
+ COMPREPLY=( $( compgen -W 'short-circuit timecheck clean \
+ rmsource test sign buildroot target buildarch buildos' \
+ ${cur_nodash#-} ) )
+ dashify;
+ # return if $cur is an option
+ [ "${cur:0:1}" = "-" ] && return 0
+ # complete on .tar.gz files
+ COMPREPLY=( $( compgen -G $cur\*.tar.gz ) )
+ return 0
+ ;;
+ --re@(build|compile))
+ # complete on source RPMs
+ COMPREPLY=( $( compgen -G $cur\*.src.rpm ) )
+ return 0
+ ;;
+ --@(checksig|@(re|add)sign))
+ # complete on RPMs
+ COMPREPLY=( $( compgen -G $cur\*.rpm ) )
+ return 0
+ ;;
+ --set@(perms|gids))
+ # complete on installed RPMs
+ COMPREPLY=( ${COMPREPLY[@]} $( rpm -qa | \
+ sed -ne 's/^\('$cur'.*\)-[0-9a-zA-Z._]\+-[0-9.]\+$/\1/p' ) )
+ return 0
+ ;;
+ esac
+}
+complete -F _rpm rpm
+
+# chsh(1) completion
+#
+_chsh()
+{
+ local cur prev
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ if [ "$prev" = "-s" ]; then
+ COMPREPLY=( $( chsh -l | grep ^$cur ) )
+ else
+ COMPREPLY=( $( compgen -u $cur ) )
+ fi
+}
+complete -F _chsh chsh
+
+# chkconfig(8) completion
+#
+_chkconfig()
+{
+ local cur prev
+
+ COMPREPLY=()
+ cur=${COMP_WORDS[COMP_CWORD]}
+ cur_nodash=${cur#--}
+ prev=${COMP_WORDS[COMP_CWORD-1]}
+
+ if [ $COMP_CWORD -eq 1 ]; then
+ COMPREPLY=( $( compgen -W 'list add del level' $cur_nodash ) )
+ for (( i=0; i < ${#COMPREPLY[@]}; i++ )); do
+ COMPREPLY[i]=--${COMPREPLY[i]}
+ done
+ return 0
+ fi
+
+ if [ $COMP_CWORD -eq 4 ]; then
+ COMPREPLY=( $( compgen -W 'on off reset' $cur ) )
+ return 0
+ fi
+
+ case "$prev" in
+ @([1-6]|--@(list|add|del)))
+ COMPREPLY=( $( compgen -W "`(cd /etc/rc.d/init.d; echo *)`" \
+ $cur) )
+ return 0
+ ;;
+ --level)
+ COMPREPLY=( $( compgen -W '1 2 3 4 5 6' $cur ) )
+ return 0
+ ;;
+ esac
+}
+complete -F _chkconfig chkconfig
+###
--- /dev/null
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 2011 Chester Ramey
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# TThis program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
--- /dev/null
+# cdfunc - example completion function for cd
+#
+# based on the cd completion function from the bash_completion package
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 2011 Chester Ramey
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# TThis program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+_comp_cd()
+{
+ local IFS=$' \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
+
+ # append slash to passed directory name that is the only completion.
+ # readline will not do this if we complete from CDPATH
+ if [[ ${#COMPREPLY[@]} -eq 1 ]]; then
+ i=${COMPREPLY[0]} # shorthand
+ if [[ "$cur" == "$i" ]] && [[ "$i" != "*/" ]]; then
+ COMPREPLY[0]+=/
+ fi
+ fi
+ return 0
+}
+
+complete -o filenames -o nospace -o bashdefault -F _comp_cd cd
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 1999 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
# usage: reverse arrayname
reverse()
{
--- /dev/null
+# usage: reverse arrayname
+reverse()
+{
+ local -a R
+ local -i i
+ local rlen temp
+
+ # make r a copy of the array whose name is passed as an arg
+ eval R=\( \"\$\{$1\[@\]\}\" \)
+
+ # reverse R
+ rlen=${#R[@]}
+
+ for ((i=0; i < rlen/2; i++ ))
+ do
+ temp=${R[i]}
+ R[i]=${R[rlen-i-1]}
+ R[rlen-i-1]=$temp
+ done
+
+ # and assign R back to array whose name is passed as an arg
+ eval $1=\( \"\$\{R\[@\]\}\" \)
+}
+
+A=(1 2 3 4 5 6 7)
+echo "${A[@]}"
+reverse A
+echo "${A[@]}"
+reverse A
+echo "${A[@]}"
+
+# unset last element of A
+alen=${#A[@]}
+unset A[$alen-1]
+echo "${A[@]}"
+
+# ashift -- like shift, but for arrays
+
+ashift()
+{
+ local -a R
+ local n
+
+ case $# in
+ 1) n=1 ;;
+ 2) n=$2 ;;
+ *) echo "$FUNCNAME: usage: $FUNCNAME array [count]" >&2
+ exit 2;;
+ esac
+
+ # make r a copy of the array whose name is passed as an arg
+ eval R=\( \"\$\{$1\[@\]\}\" \)
+
+ # shift R
+ R=( "${R[@]:$n}" )
+
+ # and assign R back to array whose name is passed as an arg
+ eval $1=\( \"\$\{R\[@\]\}\" \)
+}
+
+ashift A 2
+echo "${A[@]}"
+
+ashift A
+echo "${A[@]}"
+
+ashift A 7
+echo "${A[@]}"
+
+# Sort the members of the array whose name is passed as the first non-option
+# arg. If -u is the first arg, remove duplicate array members.
+array_sort()
+{
+ local -a R
+ local u
+
+ case "$1" in
+ -u) u=-u ; shift ;;
+ esac
+
+ if [ $# -eq 0 ]; then
+ echo "array_sort: argument expected" >&2
+ return 1
+ fi
+
+ # make r a copy of the array whose name is passed as an arg
+ eval R=\( \"\$\{$1\[@\]\}\" \)
+
+ # sort R
+ R=( $( printf "%s\n" "${A[@]}" | sort $u) )
+
+ # and assign R back to array whose name is passed as an arg
+ eval $1=\( \"\$\{R\[@\]\}\" \)
+ return 0
+}
+
+A=(3 1 4 1 5 9 2 6 5 3 2)
+array_sort A
+echo "${A[@]}"
+
+A=(3 1 4 1 5 9 2 6 5 3 2)
+array_sort -u A
+echo "${A[@]}"
--- /dev/null
+#From: "Grigoriy Strokin" <grg@philol.msu.ru>
+#Newsgroups: comp.unix.shell
+#Subject: fast basename and dirname functions for BASH/SH
+#Date: Sat, 27 Dec 1997 21:18:40 +0300
+#
+#Please send your comments to grg@philol.msu.ru
+
+function basename()
+{
+ local name="${1##*/}"
+ echo "${name%$2}"
+}
+
+function dirname()
+{
+ local dir="${1%${1##*/}}"
+ [ "${dir:=./}" != "/" ] && dir="${dir%?}"
+ echo "$dir"
+}
+
+# Two additional functions:
+# 1) namename prints the basename without extension
+# 2) ext prints extension of a file, including "."
+
+function namename()
+{
+ local name=${1##*/}
+ local name0="${name%.*}"
+ echo "${name0:-$name}"
+}
+function ext()
+{
+ local name=${1##*/}
+ local name0="${name%.*}"
+ local ext=${name0:+${name#$name0}}
+ echo "${ext:-.}"
+}
+
+
+
+
+
+
--- /dev/null
+# coprocess.bash
+#
+# vi:set sts=2 sw=2 ai:
+#
+
+coprocess_pid=
+
+#
+# coprocess - Start, control, and end coprocesses.
+#
+function coprocess ()
+{
+ while (( $# > 0 )) ; do
+ case "$1" in
+ #
+ # coprocess close
+ #
+ c|cl|clo|clos|close)
+ shift
+ exec 61>&- 62<&-
+ coprocess_pid=
+ if [ "$1" = "-SIGPIPE" ] ; then
+ # Only print message in an interactive shell
+ case "$-" in
+ *i*)
+ echo 'SIGPIPE' >&2
+ ;;
+ esac
+ return 1
+ fi
+ return 0
+ ;;
+
+ #
+ # coprocess open
+ #
+ o|op|ope|open)
+ shift
+ local fifo="/var/tmp/coprocess.$$.$RANDOM"
+
+ local cmd="/bin/bash"
+ if (( $# > 0 )) ; then
+ cmd="$@"
+ fi
+
+ mkfifo "$fifo.in" || return $?
+ mkfifo "$fifo.out" || {
+ ret=$?
+ rm -f "$fifo.in"
+ return $?
+ }
+
+ ( "$@" <$fifo.in >$fifo.out ; rm -f "$fifo.in" "$fifo.out" ) &
+ coprocess_pid=$!
+ exec 61>$fifo.in 62<$fifo.out
+ return 0
+ ;;
+
+ #
+ # coprocess print - write to the coprocess
+ #
+ p|pr|pri|prin|print)
+ shift
+ local old_trap=$(trap -p SIGPIPE)
+ trap 'coprocess close -SIGPIPE' SIGPIPE
+ if [ $# -eq 1 ] && [ "$1" = "--stdin" ] ; then
+ cat >&61
+ else
+ echo "$@" >&61
+ fi
+ local ret=$?
+ eval "$old_trap"
+ return $ret
+ ;;
+
+ #
+ # coprocess read - read from the coprocess
+ #
+ r|re|rea|read)
+ shift
+ local old_trap=$(trap -p SIGPIPE)
+ trap '_coprocess_close -SIGPIPE' SIGPIPE
+ builtin read "$@" <&62
+ local ret=$?
+ eval "$old_trap"
+ return $ret
+ ;;
+
+ s|st|sta|stat|statu|status)
+ if [ -z "$coprocess_pid" ] ; then
+ echo 'no active coprocess'
+ return 1
+ else
+ echo " coprocess is active [$coprocess_pid]"
+ return 0
+ fi
+ ;;
+
+ *)
+ coprocess print "$@"
+ return $?
+ ;;
+ esac
+ shift
+ done
+ coprocess status
+ return $?
+}
--- /dev/null
+Date: Fri, 21 Sep 2001 14:50:29 -0400
+From: "Jason M. Felice" <jfelice@cronosys.com>
+To: bash-maintainers@gnu.org, chet@po.cwru.edu
+Subject: Bash co-processes functions
+Message-ID: <20010921145029.A6093@argo.eraserhead.net>
+Mime-Version: 1.0
+
+Attached to this message you will find coprocess.bash and coshell.bash.
+Here's a brief synopsis of use:
+
+coprocess open telnet localhost
+while coprocess read il ; do
+ echo "$il"
+ case "$il" in
+ *ogin:*)
+ coprocess print 'user'
+ ;;
+ *ord:*)
+ echo 'pass' |coprocess print --stdin
+ ;;
+ *$ *)
+ coprocess print 'exit'
+ break
+ ;;
+ esac
+done
+coprocess close
+
+And here's an example of the coshell function:
+
+coshell open ssh -l root otherbox
+coshell eval hostname
+coshell ls -l
+if coshell test -d /tmp ; then echo 'otherbox has a /tmp!' ; fi
+
+coshell sendfile /var/lib/upgrade.rpm /tmp/test.rpm || exit $?
+coshell eval rpm -ivh /tmp/test.rpm || exit $?
+coshell eval rm -f /tmp/test.rpm || exit $?
+coshell close
+exit 0
+
+There are a few minor issues that I'd like to work out, but it works well
+enough for me ;-) The issues are:
+
+- Shell quoting issue with 'coshell eval' commands - need to somehow
+ re-quote words.
+- Interactive commands hang 'coshell eval', tried redirecting in </dev/null
+ to executed command, but it caused strange shell exit problems.
+- Some way to copy stdin from local coshell eval to remote shell. Probably
+ logically impossible, but would be wonderfully useful.
+
+I'm using it for writing scripts to publish websites and other scripts to
+co-located servers.
--- /dev/null
+# vi:set sts=2 sw=2 ai:
+#
+# coshell.bash - Control shell coprocesses (see coprocess.bash).
+#
+
+function coshell ()
+{
+ while (( $# > 0 )) ; do
+ case "$1" in
+ #
+ # coshell open
+ #
+ o|op|ope|open)
+ shift
+ coprocess open "$@"
+ local ret=$?
+
+ # This should eat any ssh error messages or what not.
+ coshell eval : >/dev/null 2>&1
+ return $ret
+ ;;
+
+ #
+ # coshell close
+ #
+ c|cl|clo|close)
+ shift
+ coprocess close "$@"
+ return $?
+ ;;
+
+ #
+ # coshell eval
+ #
+ e|ev|eva|eval)
+ shift
+ local cookie=$RANDOM
+ if (( $# == 0 )) ; then
+ echo "coshell eval: no argumentsl" >&2
+ return 1
+ fi
+ if [ x$coprocess_pid = x ] ; then
+ echo "coshell eval: no active coshell" >&2
+ return 1
+ fi
+
+ coprocess print "$@"
+ coprocess print "coprocess_rc=\$?"
+ coprocess print "printf 'coprocess-$cookie----\n%d\n' \$coprocess_rc"
+ if [ x$coprocess_pid = x ] ; then
+ return 0
+ fi
+
+ local ol
+ while coprocess read ol ; do
+ case "$ol" in
+ *coprocess-$cookie----*)
+ ol="${ol%coprocess-$cookie----}"
+ echo -n "$ol"
+ break
+ ;;
+ esac
+ echo "$ol"
+ done
+ coprocess read ol
+ return $ol
+ ;;
+
+ #
+ # coshell sendfile
+ #
+ s|se|sen|send|sendf|sendfi|sendfil|sendfile)
+ shift
+ if (( $# != 2 )) ; then
+ echo "coshell sendfile: syntax is 'coshell sendfile SRC TARGET'" >&2
+ return 1
+ fi
+ if [ x$coprocess_pid = x ] ; then
+ echo "coshell sendfile: no active coshell" >&2
+ return 1
+ fi
+
+ local target=$2
+ if coshell test -d "$target" ; then
+ target="$target/${1##*/}"
+ fi
+
+ coprocess print "uudecode <<END_OF_FILE"
+ uuencode -m "$target" <$1 |coprocess print --stdin
+ coshell eval "END_OF_FILE"
+ return $?
+ ;;
+
+ #
+ # coshell getfile
+ #
+ g|ge|get|getf|getfi|getfil|getfile)
+ shift
+ if (( $# != 2 )) ; then
+ echo "coshell getfile: syntax is 'coshell getfile SRC TARGET'" >&2
+ return 1
+ fi
+ if [ x$coprocess_pid = x ] ; then
+ echo "coshell getfile: no active coshell" >&2
+ return 1
+ fi
+
+ local target=$2
+ if test -d "$target" ; then
+ target="$target/${1##*/}"
+ fi
+
+ coshell eval uuencode -m "$target" "<" "$1" |uudecode
+ return $?
+ ;;
+
+ *)
+ coshell eval "$@"
+ return $?
+ ;;
+ esac
+ shift
+ done
+ coprocess status
+ return $?
+}
+
--- /dev/null
+#
+# Directory manipulation functions from the book 'The Korn Shell'
+# Modified for use with bash Mon Apr 18 08:37 1994 by
+# Ken Konecki (kenk@wfg.com)
+#
+# Modified by Chet Ramey
+#
+# This could stand to have calls to `select' added back in
+#
+
+alias integer="declare -i"
+
+integer _push_max=${CDSTACK-31} _push_top=${CDSTACK-31}
+
+unalias cd
+# alias cd=_cd
+
+# Display directory stack -- $HOME display as ~
+dirs()
+{
+ dir="${PWD#$HOME/}"
+ case $dir in
+ $HOME) dir=\~ ;;
+ /*) ;;
+ *) dir=\~/$dir ;;
+ esac
+
+ integer i=_push_top
+ integer n=1
+
+ echo "$n) $dir"
+ while let "i < $_push_max"
+ do
+ n=n+1
+ eval "echo \$n\) \$_push_stack_$i"
+ i=i+1
+ done
+}
+
+# Change directory and put directory on front of stack
+cd()
+{
+ typeset dir=
+ integer n=0 type=4 i
+ case $1 in
+ -|-1|2) # cd -
+ n=_push_top type=1
+ ;;
+ -[1-9]|-[1-9][0-9]) # cd -n
+ n=_push_top+${1#-}-1 type=2
+ ;;
+
+ 1) # keep present directory
+ echo "$PWD"
+ return
+ ;;
+
+ [2-9]|[1-9][0-9]) # cd n
+ n=_push_top+${1}-2 type=2
+ ;;
+
+ *)
+ if let "_push_top <= 0"; then
+ type=3 n=_push_max
+ fi
+ ;;
+ esac
+
+ if let "type < 3"; then
+ if let "n >= _push_max"; then
+ echo cd: Directory stack not that deep
+ return 1
+ else
+ eval dir=\${_push_stack_$n}
+ fi
+ fi
+
+ case $dir in
+ ~*) dir=$HOME${dir#\~} ;;
+ esac
+
+ cd2 ${dir:-$@} > /dev/null || return 1
+ dir=${OLDPWD#$HOME/}
+ case $dir in
+ $HOME) dir=\~ ;;
+ /*) ;;
+ *) dir=\~/$dir ;;
+ esac
+
+ case $type in
+ 1) # swap first two elements
+ eval _push_stack_$_push_top=\$dir ;;
+
+ 2|3) # put $dir on top and shift down by one until top
+ i=_push_top
+ unset _dirlist
+ while let "i < $_push_max" ; do
+ eval _dirlist=\"\$_dirlist \$_push_stack_$i\"
+ i=i+1
+ done
+
+ i=_push_top
+ for dir in "$dir" ${_dirlist} ; do
+ let "i > n" && break
+ eval _push_stack_$i=\$dir
+ i=i+1
+ done
+ ;;
+ 4) # push name
+ _push_top=_push_top-1;
+ eval _push_stack_$_push_top=\$dir
+ ;;
+ esac
+
+ echo "$PWD"
+
+}
+
+# Menu-driven change directory command
+function mcd
+{
+ dirs
+ echo -n "Select by number or enter a name: "
+ read
+ cd $REPLY
+}
+
+
+# Emulate ksh cd substitution
+cd2()
+{
+ case "$#" in
+ 0) builtin cd "$HOME" ;;
+ 1) builtin cd "$1" ;;
+ 2) newDir=$(echo $PWD | sed -e "s:$1:$2:g")
+ case "$newDir" in
+ $PWD) echo "bash:: cd: bad substitution" >&2 ; return 1 ;;
+ *) builtin cd "$newDir" ;;
+ esac ;;
+ *) echo "bash: cd: wrong arg count" 1>&2 ; return 1 ;;
+ esac
+}
--- /dev/null
+#! /bin/bash
+#
+#Derived from:
+#
+#From: damercer@mmm.com (Dan Mercer)
+#Newsgroups: comp.unix.admin,comp.unix.shell,comp.unix.programmer,comp.sys.sun.admin
+#Subject: Re: Command to find out if a directory is empty
+#Date: 17 Aug 2000 14:35:56 GMT
+#Message-ID: <8ngt8c$fmr$1@magnum.mmm.com>
+
+# usage: emptydir [dirname] ; default dirname is "."
+
+emptydir()
+{
+ typeset file dir=${1:-.}
+ [[ -d $dir ]] || {
+ echo "$FUNCNAME: $dir is not a directory" >&2
+ return 2
+ }
+ for file in $dir/.* $dir/*
+ do
+ case ${file#$dir/} in
+ .|..) ;;
+ \*) [[ -e $file ]];let $?;return;;
+ *) return 1;;
+ esac
+ done
+}
# A function that works as a front end for both stty and the `bind'
# builtin, so the tty driver and readline see the same changes
#
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 2011 Chester Ramey
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# TThis program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# Convert between the stty ^H control character form and the readline \C-H
--- /dev/null
+#
+# A function that works as a front end for both stty and the `bind'
+# builtin, so the tty driver and readline see the same changes
+#
+
+#
+# Convert between the stty ^H control character form and the readline \C-H
+# form
+#
+cvt()
+{
+ echo "$@" | cat -v | sed 's/\^/\\C-/'
+}
+
+#
+# stty front-end. Parses the argument list and creates two command strings,
+# one for stty, another for bind.
+#
+fstty()
+{
+ local cmd="" bargs=""
+ local e
+
+ while [ $# -gt 0 ]
+ do
+ case "$1" in
+ -a) cmd="$cmd everything"
+ ;;
+ erase) shift;
+ e=$(cvt "$1")
+ cmd="$cmd erase $1"
+ bargs="$bargs '\"$e\": backward-delete-char'"
+ ;;
+ kill) shift
+ e=$(cvt "$1")
+ cmd="$cmd kill $1"
+ bargs="$bargs '\"$e\": unix-line-discard'"
+ ;;
+ werase) shift;
+ e=$(cvt "$1")
+ cmd="$cmd erase $1"
+ bargs="$bargs '\"$e\": backward-kill-word'"
+ ;;
+ lnext) shift;
+ e=$(cvt "$1")
+ cmd="$cmd erase $1"
+ bargs="$bargs '\"$e\": quoted-insert'"
+ ;;
+ *) cmd="$cmd $1"
+ ;;
+ esac
+ shift
+ done
+
+ command stty $cmd
+ if [ -n "$bargs" ]; then
+ builtin bind $bargs
+ fi
+}
#
# usage: func name [name ...]
#
-# Chet Ramey
-# chet@ins.CWRU.Edu
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 1991 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
func()
{
local status=0
--- /dev/null
+#
+# func -- print out definitions for functions named by arguments
+#
+# usage: func name [name ...]
+#
+# Chet Ramey
+# chet@ins.CWRU.Edu
+func()
+{
+ local status=0
+
+ if [ $# -eq 0 ] ; then
+ echo "usage: func name [name...]" 1>&2
+ return 1
+ fi
+
+ for f
+ do
+ if [ "$(builtin type -type $f)" != "function" ] ; then
+ echo "func: $f: not a function" 1>&2
+ status=1 # one failed
+ continue
+ fi
+ builtin type $f | sed 1d
+ done
+ return $status
+}
--- /dev/null
+#
+# get_html -- get a web page from a remote server
+#
+# Original Author: Jeff Korn <jlk@cs.princeton.edu>
+# Modified for bash by Chet Ramey <chet@po.cwru.edu>
+#
+# Example: get_html cnswww.cns.cwru.edu /~chet/ | more
+
+get_html()
+{
+ local host port
+
+ (($# < 2)) && {
+ echo "usage: $FUNCNAME hostname path [port]" >&2
+ return 1
+ }
+
+ host="$1"
+ port="${3:-80}"
+
+ exec 3<> /dev/tcp/$host/$port || {
+ echo "$FUNCNAME: $host/$port: cannot connect" >&2
+ exit 1
+ }
+
+ echo -e "GET $2 HTTP/1.0\n" >&3
+
+ cat <&3
+
+ exec 3<&-
+
+ return 0
+}
+
+get_html "$@"
--- /dev/null
+#From: "Grigoriy Strokin" <grg@philol.msu.ru>
+#Newsgroups: comp.unix.shell
+#Subject: BASH: getopt function that parses long-named options
+#Date: Mon, 22 Dec 1997 20:35:18 +0300
+
+#Hi, I have written a BASH function named getoptex, that is like bash builtin
+#"getopts", but does parse long-named options and optional arguments. It only
+#uses builtin bash commands, so it is very fast. In order to use it in your
+#bash scripts, include a command ". getopt.sh" (<dot> getopt.sh) to the file
+#containing your script, and that will define functions getopt, getoptex, and
+#optlistex (the file getopt.sh with its detailed description is listed
+#below).
+
+#*** file getopt.sh ***
+
+#! /bin/bash
+#
+# getopt.sh:
+# functions like getopts but do long-named options parsing
+# and support optional arguments
+#
+# Version 1.0 1997 by Grigoriy Strokin (grg@philol.msu.ru), Public Domain
+# Date created: December 21, 1997
+# Date modified: December 21, 1997
+#
+# IMPORTANT FEATURES
+#
+# 1) Parses both short and long-named options
+# 2) Supports optional arguments
+# 3) Only uses bash builtins, thus no calls to external
+# utilities such as expr or sed is done. Therefore,
+# parsing speed is high enough
+#
+#
+# DESCRIPTION
+#
+# FUNCTION getopt
+# Usage: getopt OPTLIST {"$@"|ALTERNATIVE_PARAMETERS}
+#
+# like getopts, but parse options with both required and optional arguments,
+# Options with optional arguments must have "." instead of ":" after them.
+# Furthemore, a variable name to place option name cannot be specified
+# and is always placed in OPTOPT variable
+#
+# This function is provided for compatibility with getopts()
+# OPTLIST style, and it actually calls getoptex (see bellow)
+#
+# NOTE that a list of parameters is required and must be either "$@",
+# if processing command line arguments, or some alternative parameters.
+#
+# FUNCTION getoptex
+# Usage: getoptex OPTION_LIST {"$@"|ALTERNATIVE_PARAMETERS}
+#
+# like getopts, but parse long-named options.
+#
+# Both getopt and getoptex return 0 if an option has been parsed,
+# and 1 if all options are already parsed or an error occured
+#
+# Both getopt and getoptex set or test the following variables:
+#
+# OPTERR -- tested for whether error messages must be given for invalid
+options
+#
+# OPTOPT -- set to the name of an option parsed,
+# or to "?" if no more options or error
+# OPTARG -- set to the option argument, if any;
+# unset if ther is no argument;
+# on error, set to the erroneous option name
+#
+# OPTIND -- Initialized to 1.
+# Then set to the number of the next parameter to be parsed
+# when getopt or getoptex will be called next time.
+# When all options are parsed, contains a number of
+# the first non-option argument.
+#
+#
+# OPTOFS -- If a parameter number $OPTIND containg an option parsed
+# does not contain any more options, OPTOFS is unset;
+# otherwise, OPTOFS is set to such a number of "?" signs
+# which is equal to the number of options parsed
+#
+# You might not set variables OPTIND and OPTOFS yourself
+# unless you want to parse a list of parameters more than once.
+# Otherwise, you whould unset OPTIND (or set it to 1)
+# and unset OPTOFS each time you want to parse a new parameters
+list
+#
+# Option list format is DIFFERENT from one for getopts or getopt.
+getopts-style
+# option list can be converted to getoptex-style using a function optlistex
+# (see bellow)
+#
+# DESCRIPTION of option list used with getoptex:
+# Option names are separated by whitespace. Options consiting of
+# more than one character are treated as long-named (--option)
+#
+# Special characters can appear at the and of option names specifying
+# whether an argument is required (default is ";"):
+# ";" (default) -- no argument
+# ":" -- required argument
+# "," -- optional argument
+#
+# For example, an option list "a b c help version f: file: separator."
+# defines the following options:
+# -a, -b, -c, --help, --version -- no argument
+# -f, --file -- argument required
+# --separator -- optional argument
+#
+# FUNCTION optlistex
+# Usage new_style_optlist=`optlistex OLD_STYLE_OPTLIST`
+#
+# Converts getopts-style option list in a format suitable for use with getoptex
+# Namely, it inserts spaces after each option name.
+#
+#
+# HOW TO USE
+#
+# In order o use in your bash scripts the functions described,
+# include a command ". getopt.sh" to the file containing the script,
+# which will define functions getopt, getoptex, and optlistex
+#
+# EXAMPLES
+#
+# See files 'getopt1' and 'getopt2' that contain sample scripts that use
+# getopt and getoptex functions respectively
+#
+#
+# Please send your comments to grg@philol.msu.ru
+
+function getoptex()
+{
+ let $# || return 1
+ local optlist="${1#;}"
+ let OPTIND || OPTIND=1
+ [ $OPTIND -lt $# ] || return 1
+ shift $OPTIND
+ if [ "$1" != "-" ] && [ "$1" != "${1#-}" ]
+ then OPTIND=$(( OPTIND+1 )); if [ "$1" != "--" ]
+ then
+ local o
+ o="-${1#-$OPTOFS}"
+ for opt in ${optlist#;}
+ do
+ OPTOPT="${opt%[;.:]}"
+ unset OPTARG
+ local opttype="${opt##*[^;:.]}"
+ [ -z "$opttype" ] && opttype=";"
+ if [ ${#OPTOPT} -gt 1 ]
+ then # long-named option
+ case $o in
+ "--$OPTOPT")
+ if [ "$opttype" != ":" ]; then return 0; fi
+ OPTARG="$2"
+ if [ -z "$OPTARG" ];
+ then # error: must have an agrument
+ let OPTERR && echo "$0: error: $OPTOPT must have an argument" >&2
+ OPTARG="$OPTOPT";
+ OPTOPT="?"
+ return 1;
+ fi
+ OPTIND=$(( OPTIND+1 )) # skip option's argument
+ return 0
+ ;;
+ "--$OPTOPT="*)
+ if [ "$opttype" = ";" ];
+ then # error: must not have arguments
+ let OPTERR && echo "$0: error: $OPTOPT must not have arguments" >&2
+ OPTARG="$OPTOPT"
+ OPTOPT="?"
+ return 1
+ fi
+ OPTARG=${o#"--$OPTOPT="}
+ return 0
+ ;;
+ esac
+ else # short-named option
+ case "$o" in
+ "-$OPTOPT")
+ unset OPTOFS
+ [ "$opttype" != ":" ] && return 0
+ OPTARG="$2"
+ if [ -z "$OPTARG" ]
+ then
+ echo "$0: error: -$OPTOPT must have an argument" >&2
+ OPTARG="$OPTOPT"
+ OPTOPT="?"
+ return 1
+ fi
+ OPTIND=$(( OPTIND+1 )) # skip option's argument
+ return 0
+ ;;
+ "-$OPTOPT"*)
+ if [ $opttype = ";" ]
+ then # an option with no argument is in a chain of options
+ OPTOFS="$OPTOFS?" # move to the next option in the chain
+ OPTIND=$(( OPTIND-1 )) # the chain still has other options
+ return 0
+ else
+ unset OPTOFS
+ OPTARG="${o#-$OPTOPT}"
+ return 0
+ fi
+ ;;
+ esac
+ fi
+ done
+ echo "$0: error: invalid option: $o"
+ fi; fi
+ OPTOPT="?"
+ unset OPTARG
+ return 1
+}
+function optlistex
+{
+ local l="$1"
+ local m # mask
+ local r # to store result
+ while [ ${#m} -lt $(( ${#l}-1 )) ]; do m="$m?"; done # create a "???..." mask
+ while [ -n "$l" ]
+ do
+ r="${r:+"$r "}${l%$m}" # append the first character of $l to $r
+ l="${l#?}" # cut the first charecter from $l
+ m="${m#?}" # cut one "?" sign from m
+ if [ -n "${l%%[^:.;]*}" ]
+ then # a special character (";", ".", or ":") was found
+ r="$r${l%$m}" # append it to $r
+ l="${l#?}" # cut the special character from l
+ m="${m#?}" # cut one more "?" sign
+ fi
+ done
+ echo $r
+}
+function getopt()
+{
+ local optlist=`optlistex "$1"`
+ shift
+ getoptex "$optlist" "$@"
+ return $?
+}
+
+#**************************************
+# cut here
+#**************************************
+#*** (end of getopt.sh) ***
+
+
+#*** file getopt1 ***
+
+#! /bin/bash
+# getopt1:
+# Sample script using the function getopt
+#
+# Type something like "getopt1 -ab -d 10 -e20 text1 text2"
+# on the command line to see how it works
+#
+# See getopt.sh for more information
+#. getopt.sh
+#echo Using getopt to parse arguments:
+#while getopt "abcd:e." "$@"
+#do
+# echo "Option <$OPTOPT> ${OPTARG:+has an arg <$OPTARG>}"
+#done
+#shift $(( OPTIND-1 ))
+#for arg in "$@"
+#do
+# echo "Non option argument <$arg>"
+#done
+#
+#**************************************
+# cut here
+#**************************************
+#*** (end of getopt1) ***
+#
+#
+#*** file getopt2 ***
+#
+#! /bin/bash
+# getopt2:
+# Sample script using the function getoptex
+#
+# Type something like "getopt2 -ab -d 10 -e20 --opt1 --opt4=100 text1 text2"
+# to see how it works
+#
+# See getopt.sh for more information
+. getopt.sh
+#echo Using getoptex to parse arguments:
+#while getoptex "a; b; c; d: e. opt1 opt2 opt3 opt4: opt5." "$@"
+#do
+# echo "Option <$OPTOPT> ${OPTARG:+has an arg <$OPTARG>}"
+#done
+#shift $(( OPTIND-1 ))
+#for arg in "$@"
+#do
+# echo "Non option argument <$arg>"
+#done
+#
+#**************************************
+# cut here
+#**************************************
+#*** (end of getopt2) ***
+
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 2002 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
#
# inet2hex - Internet address conversion, dotted-decimal to hex
#
--- /dev/null
+#
+# inet2hex - Internet address conversion, dotted-decimal to hex
+#
+inet2hex ()
+{
+ local IFS
+
+ IFS=.
+ set -- $1
+
+ if (( $# != 4 )); then
+ echo "inet2hex: incorrect input format: $1" >&2
+ echo "inet2hex: usage: inet2hex XX.XX.XX.XX" >&2
+ return 2
+ fi
+
+ printf "0x%02x%02x%02x%02x\n" $1 $2 $3 $4
+}
+
+#
+# hex2inet - Internet address conversion, hex to dotted-decimal
+#
+hex2inet ()
+{
+ local x1 x2 x3 x4
+ local rev
+
+ OPTIND=1
+ while getopts "r" o
+ do
+ case "$o" in
+ r) rev=true;;
+ *) echo "hex2inet: usage: hex2inet [-r] [0x]XXXXXXXX" >&2 ; exit 2;;
+ esac
+ done
+ shift $(( $OPTIND - 1 ))
+
+ case "$1" in
+ 0x*) h=${1#??} ;;
+ *) h=$1 ;;
+ esac
+
+ if (( ${#h} != 8 )); then
+ echo "hex2inet: $h not in inet format" >&2
+ echo "hex2inet: usage: hex2inet [0x]XXXXXXXX" >&2
+ return 2
+ fi
+
+ x1=$(( 0x${h:0:2} ))
+ x2=$(( 0x${h:2:2} ))
+ x3=$(( 0x${h:4:2} ))
+ x4=$(( 0x${h:6:2} ))
+
+ if [ -z "$rev" ] ; then
+ printf "%d.%d.%d.%d\n" $x1 $x2 $x3 $x4
+ else
+ printf "%d.%d.%d.%d\n" $x4 $x3 $x2 $x1
+ fi
+ return 0
+}
--- /dev/null
+#From: jrmartin@rainey.blueneptune.com (James R. Martin)
+#Newsgroups: comp.unix.shell
+#Subject: Re: testing user input on numeric or character value
+#Date: 26 Nov 1997 01:28:43 GMT
+
+# isnum returns True if its argument is a valid number,
+# and False (retval=1) if it is any other string.
+# The first pattern requires a digit before the decimal
+# point, and the second after the decimal point.
+
+# BASH NOTE: make sure you have executed `shopt -s extglob' before
+# trying to use this function, or it will not work
+
+isnum() # string
+{
+ case $1 in
+ ?([-+])+([0-9])?(.)*([0-9])?([Ee]?([-+])+([0-9])) )
+ return 0;;
+ ?([-+])*([0-9])?(.)+([0-9])?([Ee]?([-+])+([0-9])) )
+ return 0;;
+ *) return 1;;
+ esac
+}
+
+isnum2() # string
+{
+ case $1 in
+ ?([-+])+([[:digit:]])?(.)*([[:digit:]])?([Ee]?([-+])+([[:digit:]])) )
+ return 0;;
+ ?([-+])*([[:digit:]])?(.)+([[:digit:]])?([Ee]?([-+])+([[:digit:]])) )
+ return 0;;
+ *) return 1;;
+ esac
+}
+
+isint() # string
+{
+ case $1 in
+ ?([-+])+([0-9]) )
+ return 0;;
+ *) return 1;;
+ esac
+}
+
+isint2() # string
+{
+ case $1 in
+ ?([-+])+([[:digit:]]) )
+ return 0;;
+ *) return 1;;
+ esac
+}
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 1998 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
isnum2()
{
case "$1" in
--- /dev/null
+isnum2()
+{
+ case "$1" in
+ '[-+]' | '') return 1;; # empty or bare `-' or `+'
+ [-+]*[!0-9]*) return 1;; # non-digit with leading sign
+ [-+]*) return 0;; # OK
+ *[!0-9]*) return 1;; # non-digit
+ *) return 0;; # OK
+ esac
+}
+
+# this one handles floating point
+isnum3()
+{
+ case "$1" in
+ '') return 1;; # empty
+ *[!0-9.+-]*) return 1;; # non-digit, +, -, or .
+ *?[-+]*) return 1;; # sign as second or later char
+ *.*.*) return 1;; # multiple decimal points
+ *) return 0;; # OK
+ esac
+}
--- /dev/null
+#From: damatex@CAM.ORG (Mario Boudreault)
+#Newsgroups: comp.unix.shell
+#Subject: JULIAN DATE CONVERSION SUB
+#Date: 4 Aug 1995 10:23:28 -0400
+#Message-ID: <3vtah0$jb3@ocean.CAM.ORG>
+
+#For those using shells and who want to convert dates to a julian number
+#here is a shell script (wihtout validation) that can be used as a base
+#program for your shell scripts.
+
+#Special thanks to Ed Ferguson@ti.com who sent me the algorithm to compute
+#that date.
+
+#
+# MODIFIED BY CHET RAMEY TO CONVERT TO bash v2 SYNTAX
+#
+
+# cnvdate - Conversion de dates en julienne et vice et versa...
+#
+# Par : Mario Boudreault Damatex Inc Montreal, Canada
+# Date: 2 Aout 1995
+# Rev.: 2 Aout 1995
+#
+# Usage:
+# cvdate [-j] YYYMMDD pour convertir en nbre de jours
+# cvdate -d {julian number} pour convertir en AAAAMMJJ
+#
+
+jul_date()
+{
+ #
+ # Separe ANNEE, MOIS et JOUR...
+ #
+ YEAR=`echo $DATE | awk ' { print substr($0,1,4) } '`
+ MONTH=`echo $DATE | awk ' { print substr($0,5,2) } '`
+ DAY=`echo $DATE | awk ' { print substr($0,7,2) } '`
+ #
+ # Execute la formule magique...
+ #
+ A=$(( $DAY - 32075 + 1461 * ( $YEAR + 4800 - ( 14 - $MONTH ) / 12 ) \
+ / 4 + 367 * ( $MONTH - 2 + ( 14 - $MONTH ) / 12 * 12 ) / 12 - \
+ 3 * ( ( $YEAR + 4900 - ( 14 - $MONTH ) / 12 ) / 100 ) / 4 ))
+ echo $A
+}
+
+day_date()
+{
+ TEMP1=$(( $DATE + 68569 ))
+ TEMP2=$(( 4 * $TEMP1 / 146097 ))
+ TEMP1=$(( $TEMP1 - ( 146097 * $TEMP2 + 3 ) / 4 ))
+ Y=$(( 4000 * ( $TEMP1 + 1 ) / 1461001 ))
+ TEMP1=$(( $TEMP1 - 1461 * $Y / 4 + 31 ))
+ M=$(( 80 * $TEMP1 / 2447 ))
+ D=$(( $TEMP1 - 2447 * $M / 80 ))
+ TEMP1=$(( $M / 11 ))
+ M=$(( $M + 2 - 12 * $TEMP1 ))
+ Y=$(( 100 * ( $TEMP2 - 49 ) + $Y + $TEMP1 ))
+ M=`echo $M | awk ' { M=$0 ; if ( length($0) == 1 ) M="0"$0 } END { print M } '`
+ D=`echo $D | awk ' { D=$0 ; if ( length($0) == 1 ) D="0"$0 } END { print D } '`
+ echo $Y$M$D
+}
+
+# main()
+
+if [ $# -eq 1 ]; then
+ DATE=$1
+ jul_date
+elif [ "$1" = '-j' ]; then
+ DATE=$2
+ jul_date
+elif [ "$1" = '-d' ]; then
+ DATE=$2
+ day_date
+fi
+#
+# Termine
+#
+exit 0
--- /dev/null
+jj ()
+{
+ p=$(jobs $1);
+ echo $p
+
+ case "$p" in
+ [*) echo matches '[*'
+ ;;
+ *) echo not a match\?
+ ;;
+ esac
+}
--- /dev/null
+# From: Seth Chaiklin <psykseth@aau.dk>
+# To: chet@ins.CWRU.Edu
+# Subject: bash functions (sorta)
+
+#
+# keep:
+# usage: keep program
+# declare the a program should be "kept". i.e. try to fg a stopped one
+# and only when that fails start a fresh program.
+#
+
+keep()
+{
+ case $# in
+ 1|2) ;;
+ *) echo "usage: keep [alias] program" 1>&2 ; return 1;;
+ esac
+
+ # progname
+ pn=${1##*/}
+
+ # set up an alias for the kept program
+ if [ $# = 1 ]; then
+ alias "$pn=fg $1 2>/dev/null || $1"
+ else
+ alias "$1=fg $2 2>/dev/null || $2"
+ fi
+}
+
+#
+# unkeep:
+# usage: unkeep program
+# unset the alias set up by the keep function
+#
+
+unkeep()
+{
+ if [ $# != 1 ]; then
+ echo "usage: unkeep program"
+ return 2
+ fi
+
+ # unset the alias for the kept program
+ unalias "${1##*/}"
+}
+
+#
+# kept:
+# lists all kept programs in 'alias: program' form
+#
+
+kept()
+{
+ alias | grep "fg.*2>" | sed "s/alias \(.*\)='fg.*||\(.*\)'$/\1:\2/"
+}
+
+
+# some things that should be kept
+#keep /usr/local/bin/emacs
+#keep e ${EDITOR:-/usr/local/bin/emacs}
+#keep edit ${EDITOR:-/usr/local/bin/emacs}
+#keep /usr/local/bin/emm
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 2001 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
#
# ksh-like `cd': cd [-LP] [dir [change]]
#
--- /dev/null
+#
+# ksh-like `cd': cd [-LP] [dir [change]]
+#
+cd()
+{
+ OPTIND=1
+ while getopts "LP" opt
+ do
+ case $opt in
+ L|P) CDOPTS="$CDOPTS -$opt" ;;
+ *) echo "$FUNCNAME: usage: $FUNCNAME [-LP] [dir] [change]" >&2
+ return 2;;
+ esac
+ done
+
+ shift $(( $OPTIND - 1 ))
+
+ case $# in
+ 0) builtin cd $CDOPTS "$HOME" ;;
+ 1) builtin cd $CDOPTS "$@" ;;
+ 2) old="$1" new="$2"
+ case "$PWD" in
+ *$old*) ;;
+ *) echo "${0##*/}: $FUNCNAME: bad substitution" >&2 ; return 1 ;;
+ esac
+
+ dir=${PWD//$old/$new}
+
+ builtin cd $CDOPTS "$dir" && echo "$PWD"
+
+ ;;
+ *) echo "${0##*/}: $FUNCNAME: usage: $FUNCNAME [-LP] [dir] [change]" >&2
+ return 2 ;;
+ esac
+}
#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 1999 Chester Ramey
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# TThis program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
# replacements for test/[ that do arithmetic expansion on the operands to
# the arithmetic operators, like ksh.
#
--- /dev/null
+#
+# replacements for test/[ that do arithmetic expansion on the operands to
+# the arithmetic operators, like ksh.
+#
+function test()
+{
+ local -i n1 n3
+ case "$#" in
+ 3) case "$2" in
+ -lt|-gt|-eq|-ne|-le|-ge) n1=$(( $1 ))
+ n3=$(( $3 ))
+ builtin test "$n1" $2 "$n3"
+ return $?;;
+ *) builtin test "$@" ;;
+ esac;;
+ *) builtin test "$@" ;;
+ esac
+}
+
+function [()
+{
+ local -i n1 n3
+ case "$#" in
+ 4) case "$2" in
+ -lt|-gt|-eq|-ne|-le|-ge) n1=$(( $1 ))
+ n3=$(( $3 ))
+ builtin [ "$n1" $2 "$n3" ]
+ return $?;;
+ *) builtin [ "$@" ;;
+ esac;;
+ *) builtin [ "$@" ;;
+ esac
+}
+
+q=7
+
+[ q -lt 10 ]
+echo $?
+[ $q -lt 10 ]
+echo $?
# Chet Ramey
# chet@ins.CWRU.Edu
#
+
+#
+# Copyright 2002 Chester Ramey
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# TThis program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
#
# These are definitions for the ksh compiled-in `exported aliases'. There
# are others, but we already have substitutes for them: "history", "type",
--- /dev/null
+#
+# .kshenv -- functions and aliases to provide the beginnings of a ksh
+# environment for bash.
+#
+# Chet Ramey
+# chet@ins.CWRU.Edu
+#
+#
+# These are definitions for the ksh compiled-in `exported aliases'. There
+# are others, but we already have substitutes for them: "history", "type",
+# and "hash".
+#
+alias r="fc -s"
+alias functions="typeset -f"
+alias integer="typeset -i"
+alias nohup="nohup "
+alias command="command "
+alias stop="kill -s STOP"
+alias redirect="command exec"
+alias hist="fc"
+
+#
+# An almost-ksh compatible `whence' command. This is as hairy as it is
+# because of the desire to exactly mimic ksh (whose behavior was determined
+# empirically).
+#
+# This depends somewhat on knowing the format of the output of the bash
+# `builtin type' command.
+#
+
+whence()
+{
+ local vflag pflag fflag defarg c
+ local path
+
+ vflag= aflag= pflag= fflag=
+ path=
+ if [ "$#" = "0" ] ; then
+ echo "whence: usage: whence [-afpv] name..." >&2
+ return 2
+ fi
+
+ OPTIND=1
+ while getopts "avfp" c
+ do
+ case "$c" in
+ a) defarg=-a ;;
+ f) fflag=1 ;; # no-op
+ p) pflag=1 ;;
+ v) vflag=1 ;;
+ ?) echo "whence: $1: unknown option" >&2
+ echo "whence: usage: whence [-afpv] name..." >&2
+ return 2 ;;
+ esac
+ done
+
+ shift $(( $OPTIND - 1 ))
+
+ if [ "$#" = "0" ] ; then
+ echo "whence: usage: whence [-afpv] name..." >&2
+ return 2
+ fi
+
+ for cmd
+ do
+ if [ "$vflag" ] ; then
+ if [ -z "$defarg" ]; then
+ builtin type $cmd | sed 1q
+ else
+ if builtin type $defarg -t $cmd | grep 'function$' >/dev/null 2>&1; then
+ # HAIRY awk script to suppress
+ # printing of function body -- could
+ # do it with sed, but I don't have
+ # that kind of time
+ builtin type $defarg $cmd | awk '
+BEGIN {printit = 1;}
+$1 == "'$cmd'" && $2 == "()" {printit=0; next; }
+/^}$/ { if (printit == 0) printit=1 ; else print $0; next ; }
+/.*/ { if (printit) print $0; }'
+ else
+ builtin type $defarg $cmd
+ fi
+ fi
+ else
+ path=$(builtin type $defarg -p $cmd)
+ if [ "$path" ] ; then
+ echo $path
+ else
+ case "$cmd" in
+ /*) echo "" ;;
+ *) case "$(builtin type -t $cmd)" in
+ "") echo "" ;;
+ *) echo "$cmd" ;;
+ esac
+ ;;
+ esac
+ fi
+ fi
+ done
+ return 0
+}
+
+#
+# For real ksh homeboy fanatics, redefine the `type' builtin with a ksh
+# version.
+#
+#type()
+#{
+# whence -v "$*"
+#}
+
+#
+# ksh-like `cd': cd [-LP] [dir [change]]
+#
+cd()
+{
+ OPTIND=1
+ while getopts "LP" opt
+ do
+ case $opt in
+ L|P) CDOPTS="$CDOPTS -$opt" ;;
+ *) echo "$FUNCNAME: usage: $FUNCNAME [-LP] [dir] [change]" >&2
+ return 2;;
+ esac
+ done
+
+ shift $(( $OPTIND - 1 ))
+
+ case $# in
+ 0) builtin cd $CDOPTS "$HOME" ;;
+ 1) builtin cd $CDOPTS "$@" ;;
+ 2) old="$1" new="$2"
+ case "$PWD" in
+ *$old*) ;;
+ *) echo "${0##*/}: $FUNCNAME: bad substitution" >&2 ; return 1 ;;
+ esac
+
+ dir=${PWD//$old/$new}
+
+ builtin cd $CDOPTS "$dir" && echo "$PWD"
+
+ ;;
+ *) echo "${0##*/}: $FUNCNAME: usage: $FUNCNAME [-LP] [dir] [change]" >&2
+ return 2 ;;
+ esac
+}
+
+#
+# ksh print emulation
+#
+# print [-Rnprsu[n]] [-f format] [arg ...]
+#
+# - end of options
+# -R BSD-style -- only accept -n, no escapes
+# -n do not add trailing newline
+# -p no-op (no coprocesses)
+# -r no escapes
+# -s print to the history file
+# -u n redirect output to fd n
+# -f format printf "$format" "$@"
+#
+
+print()
+{
+ local eflag=-e
+ local nflag= fflag= c
+ local fd=1
+
+ OPTIND=1
+ while getopts "fRnprsu:" c
+ do
+ case $c in
+ R) eflag= ;;
+ r) eflag= ;;
+ n) nflag=-n ;;
+ s) sflag=y ;;
+ f) fflag=y ;;
+ u) fd=$OPTARG ;;
+ p) ;;
+ esac
+ done
+ shift $(( $OPTIND - 1 ))
+
+ if [ -n "$fflag" ]; then
+ builtin printf "$@" >&$fd
+ return
+ fi
+
+ case "$sflag" in
+ y) builtin history -s "$*" ;;
+ *) builtin echo $eflag $nflag "$@" >&$fd
+ esac
+}
+
+# substring function
+# this function should be equivalent to the substring built-in which was
+# eliminated after the 06/29/84 version
+substring ()
+{
+ local lpat flag str #local variables
+ set -f
+ case $1 in
+ -l|-L)
+ flag=$1
+ lpat=$2
+ shift 2
+ ;;
+ esac
+ # test for too few or too many arguments
+ if [ x"$1" = x ] || [ $# -gt 2 ]; then
+ print -u2 'substring: bad argument count'
+ return 1
+ fi
+ str=$1
+ if [ x"$flag" = x-l ]; then #substring -l lpat
+ str=${str#$lpat}
+ elif [ x"$flag" = x-L ]; then
+ str=${str##$lpat} #substring -L lpat
+ fi
+
+ if [ x"$2" != x ]; then
+ echo ${str%$2}
+ else
+ echo $str
+ fi
+
+ return 0
+}
--- /dev/null
+#! /bin/bash
+#
+# original from
+# @(#) lowercase.ksh 1.0 92/10/08
+# 92/10/08 john h. dubois iii (john@armory.com)
+#
+# conversion to bash v2 syntax done by Chet Ramey
+
+lowercase()
+{
+ for file; do
+ [ -f "$file" ] || continue
+ filename=${file##*/}
+ case "$file" in
+ */*) dirname=${file%/*} ;;
+ *) dirname=.;;
+ esac
+ nf=$(echo $filename | tr A-Z a-z)
+ newname="${dirname}/${nf}"
+ if [ "$nf" != "$filename" ]; then
+ mv "$file" "$newname"
+ echo "lowercase: $file -> $newname"
+ else
+ echo "lowercase: $file not changed."
+ fi
+ done
+}
--- /dev/null
+# Written from scratch by Tom Tromey (tromey@cns.caltech.edu)
+#
+# manpage -- find and print a manual page.
+# usage: manpage section name [printing]
+#
+function manpage ()
+{
+ local i h cmd zot sec
+ local num="$1"
+ local page="$2"
+ local printing="$3"
+ local mp
+
+ mp="${MANPATH:-/usr/man}"
+ if [ "$#" -lt 2 ]; then return 1; fi # should print usage
+ if [ "$num" != "" ]; then
+ sec="${num%%[a-zA-Z]*}"
+ else
+ sec='[168234571lnpo]'
+ num="$sec"
+ fi
+ for i in $(echo "$mp" | tr : ' '); do
+ if [ ! -d "$i" ]; then continue; fi
+ file="$i"/man"$sec"/"$page"."$num"*
+ set $file
+ file="$1"
+ if [ -f "$file" ]; then
+ zot=$(sed 1q "$file")
+ cmd=${MANROFF:-"nroff -man - | col | cat -s"}
+ h=${zot##"'"'\"'}
+ if [ "$h" != "$zot" ]; then
+ while [ "$h" != "" ]; do
+ case "$h" in
+ *e) cmd="${MANEQN:-neqn} | $cmd";;
+ *r) cmd="refer | $cmd";;
+ *t) cmd="tbl | $cmd";;
+ *v) cmd="vgrind | $cmd";;
+ *) ;; # should print error
+ esac
+ h=${h%?}
+ done
+ fi
+ if [ "$printing" != "" ]; then
+ (cd "$i"; eval "$cmd") < "$file" | ${PAGER:-more}
+ else
+ (cd "$i"; eval "$cmd") < "$file" > /tmp/manpage-$$
+ ${PAGER:-more} /tmp/manpage-$$
+ rm -f /tmp/manpage-$$
+ fi
+ break
+ fi
+ done
+}
+
+function whatis_internal ()
+{
+ local j
+ for j in $(echo "$MANPATH" | tr : ' '); do
+ if [ -f "$j/whatis" ]; then
+ eval $2 -i -e "$1" $j/whatis
+ fi
+ done
+}
+
+function whatis ()
+{
+ local name=$(basename "$1")
+ whatis_internal "$name" "grep -w"
+}
+
+function apropos ()
+{
+ whatis_internal "$1" "grep -F"
+}
+
+# Note: "-" and "-t" together not supported. This man could be
+# made a lot better, but it does everything I want.
+function man ()
+{
+ local PAGER printing mpath MANROFF num
+ mpath="${MANPATH:-/usr/man}"
+ while true; do
+ case "$1" in
+ -) PAGER=cat
+ printing= ;;
+ -t)
+ MANROFF=${TROFF:-"ptroff -man -t"}
+ PAGER="${TCAT:-lpr}"
+ printing=yes ;;
+ -M)
+ mpath="$2"
+ shift;;
+ *) break;;
+ esac
+ shift
+ done
+ local MANPATH="$mpath"
+ case "$1" in
+ -f | -k)
+ local g a
+ if [ "$1" = "-f" ]; then
+ g="grep -w"
+ a=$(basename "$2")
+ else
+ g="grep -F"
+ a="$2"
+ fi
+ whatis_internal "$a" "$g"
+ ;;
+ [0-9npol] | [0-9][a-z]* | new | public | old | local)
+ if [ "$1" = "new" ]; then
+ num=n
+ elif [ "$1" = "public" ]; then
+ num=p
+ elif [ "$1" = "old" ]; then
+ num=o
+ elif [ "$1" = "local" ]; then
+ num=l
+ else
+ num="$1"
+ fi
+ shift
+ manpage "$num" "$1" "$printing"
+ ;;
+ *)
+ manpage "$num" "$1" "$printing"
+ ;;
+ esac
+}
--- /dev/null
+# To: chet@ins.CWRU.Edu
+# Subject: Bash functions
+# From: Sandeep Mehta <sxm@philabs.Philips.Com>
+
+# print MH folders, useful only because folders(1) doesn't print
+# mod date/times
+
+mhfold()
+{
+ list=`folders | awk '{if (1 < NR) print $1}'`
+ /bin/ls -lag ~/Mail > /tmp/fold$$
+ for i in $list; do
+ grep $i /tmp/fold$$
+ done
+ /bin/rm -f /tmp/fold$$
+}
--- /dev/null
+#!/bin/bash
+# @(#) newdirstack.bsh
+
+# Date: Tue, 31 Jan 2012 16:28:52 +0100
+# Subject: A Bash source code example
+# From: Eric Sanchis <eric.sanchis@iut-rodez.fr>
+# To: chet.ramey@case.edu
+#
+# Using Bash everyday, I developped an enhanced implementation of the
+# cd/dir functions described in the Bolsky & Korn book, which
+# illustrates several specific Bash syntax elements.
+#
+# It works fine with a non empty CDPATH and cdable variables. In
+# addition, a directory name is indexed only once into the stack.
+#
+# If you find this code snippet useful, would it be possible to include
+# it into the bash-doc section of future bash packages ?
+#
+# Sincerely yours,
+#
+# Eric
+# IUT Rodez
+# University of Toulouse (France)
+
+###
+# Another implementation of the directory manipulation functions
+# published in the Bolsky & Korn book : "The new Korn shell" :
+# cd, to change current directory
+# d, to display the stack content
+# Eric Sanchis (eric.sanchis@iut-rodez.fr), 2012
+###
+
+
+shopt -s expand_aliases
+shopt -s extglob
+shopt -s cdable_vars
+
+alias integer='declare -i'
+
+ integer MAX=32
+ integer INDMAX=MAX-1
+ integer INDTOP=0
+
+unalias cd 2>/dev/null
+alias cd=cdir
+
+unset tab
+tab[INDTOP]="$(pwd)"
+
+
+function cdir
+{
+ local -i ind
+
+dir="${1:-$HOME}"
+case "$dir" in
+ - ) # cd - => equivalent to : cd -1
+ ind=INDTOP-1
+ cd_by_number $ind
+ ;;
+ -+([[:digit:]]) ) # cd -n
+ ind=$INDTOP-${dir#-}
+ cd_by_number $ind
+ ;;
+ *) # cd ~ or cd dir_name
+ cd_by_name "$dir"
+esac
+}
+
+
+function cd_by_number
+{
+ local -i k=$1
+ local -i j
+ local dirtmp
+
+if (( k < 0 ))
+ then
+ echo Impossible to change directory >&2
+ return 1
+ else
+ dirtmp="${tab[k]}"
+ j=k+1
+ while (( j <= INDTOP ))
+ do
+ tab[j-1]="${tab[j]}"
+ j=j+1
+ done
+ tab[INDTOP]="$dirtmp"
+ \cd "${tab[INDTOP]}"
+fi
+}
+
+
+function cd_by_name
+{
+ local -i i
+ local rep
+
+rep=$( \cd "$1" &>/dev/null && pwd)
+if [[ -z "$rep" ]]
+ then
+ echo cd : "$1" unknown >&2
+ return 1
+fi
+
+ i=$INDTOP
+ while (( i >= 0 ))
+ do
+ if [[ "${tab[i]}" == "$rep" ]]
+ then break
+ fi
+ i=i-1
+ done
+
+if (( i == INDTOP ))
+ then # cd -0 => we do nothing !
+ return 0
+ elif (( i == -1 ))
+ then # the directory isn't in the stack
+ if (( INDTOP == INDMAX ))
+ then # the stack is FULL
+ # the oldest directory is removed
+ local -i m
+
+ m=1
+ while (( m <= INDMAX ))
+ do
+ tab[m-1]="${tab[m]}"
+ m=m+1
+ done
+ else # the new directory is added to the top of the stack
+ INDTOP=INDTOP+1
+ fi
+ tab[INDTOP]="$rep"
+ \cd "${tab[INDTOP]}"
+ return 0
+
+ else # the directory is already in the stack
+ # $i gives its index
+ cd_by_number $i
+fi
+}
+
+
+function d # display the directory stack
+{
+ local -i i
+ local rep
+
+i=0
+while (( $i <= $INDTOP ))
+ do
+ rep="${tab[INDTOP-i]#$HOME/}"
+ case "$rep" in
+ $HOME) rep="~" ;;
+ /* ) : ;;
+ * ) rep="~/$rep"
+ esac
+
+ echo "$i ) $rep"
+ i=i+1
+ done
+}
+
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 1992 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
trap _notify CHLD
NOTIFY_ALL=false
unset NOTIFY_LIST
--- /dev/null
+trap _notify CHLD
+NOTIFY_ALL=false
+unset NOTIFY_LIST
+unalias false
+
+false()
+{
+ return 1
+}
+
+_notify ()
+{
+ local i j
+ local newlist=
+
+ if $NOTIFY_ALL
+ then
+ return # let bash take care of this itself
+ elif [ -z "$NOTIFY_LIST" ]; then
+ return
+ else
+ set -- $NOTIFY_LIST
+ for i in "$@"
+ do
+ j=$(jobs -n %$i)
+ if [ -n "$j" ]; then
+ echo "$j"
+ jobs -n %$i >/dev/null
+ else
+ newlist="newlist $i"
+ fi
+ done
+ NOTIFY_LIST="$newlist"
+ fi
+}
+
+notify ()
+{
+ local i j
+
+ if [ $# -eq 0 ]; then
+ NOTIFY_ALL=:
+ set -b
+ return
+ else
+ for i in "$@"
+ do
+ # turn a valid job spec into a job number
+ j=$(jobs $i)
+ case "$j" in
+ [*) j=${j%%]*}
+ j=${j#[}
+ NOTIFY_LIST="$NOTIFY_LIST $j"
+ ;;
+ esac
+ done
+ fi
+}
--- /dev/null
+#From: "Simon J. Gerraty" <sjg@zen.void.oz.au>
+#Message-Id: <199510091130.VAA01188@zen.void.oz.au>
+#Subject: Re: a shell idea?
+#Date: Mon, 09 Oct 1995 21:30:20 +1000
+
+
+# NAME:
+# add_path.sh - add dir to path
+#
+# DESCRIPTION:
+# These functions originated in /etc/profile and ksh.kshrc, but
+# are more useful in a separate file.
+#
+# SEE ALSO:
+# /etc/profile
+#
+# AUTHOR:
+# Simon J. Gerraty <sjg@zen.void.oz.au>
+
+# @(#)Copyright (c) 1991 Simon J. Gerraty
+#
+# This file is provided in the hope that it will
+# be of use. There is absolutely NO WARRANTY.
+# Permission to copy, redistribute or otherwise
+# use this file is hereby granted provided that
+# the above copyright notice and this notice are
+# left intact.
+
+# is $1 missing from $2 (or PATH) ?
+no_path() {
+ eval "case :\$${2-PATH}: in *:$1:*) return 1;; *) return 0;; esac"
+}
+# if $1 exists and is not in path, append it
+add_path () {
+ [ -d ${1:-.} ] && no_path $* && eval ${2:-PATH}="\$${2:-PATH}:$1"
+}
+# if $1 exists and is not in path, prepend it
+pre_path () {
+ [ -d ${1:-.} ] && no_path $* && eval ${2:-PATH}="$1:\$${2:-PATH}"
+}
+# if $1 is in path, remove it
+del_path () {
+ no_path $* || eval ${2:-PATH}=`eval echo :'$'${2:-PATH}: |
+ sed -e "s;:$1:;:;g" -e "s;^:;;" -e "s;:\$;;"`
+}
--- /dev/null
+#!/bin/bash
+
+#From: kaz@ashi.footprints.net (Kaz Kylheku)
+#Newsgroups: comp.os.linux.misc
+#Subject: Re: bash question: subdirectories
+#Message-ID: <slrn8a0gu9.v5n.kaz@ashi.FootPrints.net>
+#Date: Tue, 08 Feb 2000 16:24:35 GMT
+
+#Actually it can be made to. That is to say, it is possible to code a recursive
+#descender function in the bash language. Here is an example.
+#
+#What is nice about this is that you can embed the function into your shell
+#script. The function changes the current working directory as it descends.
+#So it can handle arbitrarily deep paths. Whereas paths generated by the
+#find command can cause a problem when they get too long; the kernel has a
+#hard limit on the length of the string passed to the open() and other
+#system calls.
+
+#There are races; what if the directory tree is blown away during the traversal?
+#The function won't be able to crawl back up using the .. link and will just
+#bail.
+
+# Recursive Directory Traverser
+# Author: Kaz Kylheku
+# Date: Feb 27, 1999
+# Copyright 1999
+
+# Function parameter usage:
+# $1 directory to search
+# $2 pattern to search for
+# $3 command to execute
+# $4 secret argument for passing down path
+
+function recurse
+{
+ local file
+ local path
+
+ if [ "$4" = "" ] ; then
+ path="${1%/}/"
+ else
+ path="$4$1/"
+ fi
+
+ if cd "$1" ; then
+ for file in $2; do
+ if [ -f "$file" ] || [ -d "$file" ]; then
+ eval "$3"
+ fi
+ done
+ for file in .* * ; do
+ if [ "$file" = "." ] || [ "$file" = ".." ] ; then
+ continue
+ fi
+ if [ -d "$file" ] && [ ! -L "$file" ]; then
+ recurse "$file" "$2" "$3" "$path"
+ fi
+ done
+ cd ..
+ fi
+}
+
+recurse "$1" "$2" 'echo "$path$file"'
--- /dev/null
+# To: chet@ins.CWRU.Edu
+# Subject: Bash functions
+# From: Sandeep Mehta <sxm@philabs.Philips.Com>
+
+##########################################
+#
+# repeat - clone of C shell builtin `repeat'
+#
+# usage: repeat <count> <command>
+#
+# It has been tested inside other functions and in conditionals like
+# if [ "`repeat <count> <command>`" ]; then COMMANDS [ else COMMANDS ] fi
+# Please send me fixes/enhancements.
+#
+# Sandeep Mehta <sxm@philabs.Philips.Com>
+##########################################
+repeat()
+{
+ local rcount=$1
+
+ if [ $# -le 1 ] || [ -z "$rcount" ]; then
+ echo "usage: repeat <count> <command>" 1>&2
+ return 2
+ fi
+
+ shift
+
+ local acmd=("$@")
+
+ if [ $rcount -le 0 ]; then
+ echo "count must be greater than 0"
+ echo "usage: repeat <count> <command>" 1>&2
+ return 2
+ fi
+
+ st=0
+ while [ $rcount -gt 0 ]; do
+ eval "${acmd[@]}"
+ st=$?
+ rcount=$((rcount - 1))
+ done
+ return $st
+}
--- /dev/null
+# From psamuels@jake.niar.twsu.edu (Peter Samuelson)
+# posted to usenet, Message-ID: <6rtp8j$2a0$1@jake.niar.twsu.edu>
+
+repeat ()
+{
+ local i max; # note that you can use \$i in the command string
+ max=$1; shift;
+
+ i=1; while ((i <= max)); do
+ eval "$@"; ((i = i + 1));
+ done;
+}
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 1995 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
# Generate a sequence from m to n, m defaults to 1.
seq ()
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 1998 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
# Generate a sequence from m to n, m defaults to 1.
seq ()
--- /dev/null
+# Generate a sequence from m to n, m defaults to 1.
+
+seq ()
+{
+ declare -i lo hi i # makes local
+ local _SEQ INIT COMPARE STEP
+
+ case "$1" in
+ -r) INIT='i=$hi _SEQ=""' COMPARE='let "i >= $lo"' STEP='let i-=1' ; shift ;;
+ *) INIT='i=$lo _SEQ=""' COMPARE='let "i <= $hi"' STEP='let i+=1' ;;
+ esac
+
+ case $# in
+ 1) lo=1 hi="$1" ;;
+ 2) lo=$1 hi=$2 ;;
+ *) echo seq: usage: seq [-r] [low] high 1>&2 ; return 2 ;;
+ esac
+
+ # equivalent to the as-yet-unimplemented
+ # for (( "$INIT" ; "$COMPARE" ; "$STEP" )); do _SEQ="${_SEQ}$i "; done
+ eval "$INIT"
+ while eval "$COMPARE"; do
+ _SEQ="${_SEQ}$i "
+ eval "$STEP"
+ done
+ echo "${_SEQ# }"
+ return 0
+}
+
+# like the APL `iota' function (or at least how I remember it :-)
+iota()
+{
+ case $# in
+ 1) seq 1 "$1"; return $?;;
+ *) echo "iota: usage: iota high" 1>&2; return 2;;
+ esac
+}
--- /dev/null
+# Generate a sequence from m to n, m defaults to 1.
+
+seq ()
+{
+ declare -i lo hi i # makes local
+ local _SEQ
+
+ case $# in
+ 1) seq 1 "$1" ; return $? ;;
+ 2) lo=$1 hi=$2
+ i=$lo _SEQ=""
+ while let "i <= hi"; do
+ _SEQ="${_SEQ}$i "
+ let i+=1
+ done
+ echo "${_SEQ# }"
+ return 0 ;;
+ *) echo seq: usage: seq [low] high 1>&2 ; return 2 ;;
+ esac
+}
+
+# like the APL `iota' function (or at least how I remember it :-)
+iota()
+{
+ case $# in
+ 1) seq 1 "$1"; return $?;;
+ *) echo "iota: usage: iota high" 1>&2; return 2;;
+ esac
+}
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 2001 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
# Sort the positional paramters.
# Make sure the positional parameters are passed as arguments to the function.
# If -u is the first arg, remove duplicate array members.
--- /dev/null
+# Sort the positional paramters.
+# Make sure the positional parameters are passed as arguments to the function.
+# If -u is the first arg, remove duplicate array members.
+sort_posparams()
+{
+ local -a R
+ local u
+
+ case "$1" in
+ -u) u=-u ; shift ;;
+ esac
+
+ # if you want the case of no positional parameters to return success,
+ # remove the error message and return 0
+ if [ $# -eq 0 ]; then
+ echo "$FUNCNAME: argument expected" >&2
+ return 1
+ fi
+
+ # make R a copy of the positional parameters
+ R=( "${@}" )
+
+ # sort R.
+ R=( $( printf "%s\n" "${R[@]}" | sort $u) )
+
+ printf "%s\n" "${R[@]}"
+ return 0
+}
+
+# will print everything on separate lines
+set -- 3 1 4 1 5 9 2 6 5 3 2
+sort_posparams "$@"
+
+# sets without preserving quoted parameters
+set -- $( sort_posparams "$@" )
+echo "$@"
+echo $#
+
+# sets preserving quoted parameters, beware pos params with embedded newlines
+set -- 'a b' 'a c' 'x z'
+
+oifs=$IFS
+IFS=$'\n'
+set -- $( sort_posparams "$@" )
+IFS="$oifs"
+
+echo "$@"
+echo $#
+
+sort_posparams
--- /dev/null
+#From: Syamala Rao Tadigadapa <stadigad@us.oracle.com>
+#Subject: Re: Division in ksh(getting the exact number) Please HELP
+#Date: Mon, 25 Oct 1999 15:05:08 -0700
+#Message-ID: <3814D414.7B896084@us.oracle.com>
+
+#Here is how to calculate the (integer part of the) square root
+#of a number in a much cleaner way.
+
+sqroot()
+{
+ let arg=$1
+ let root=arg
+ while :
+ do
+ newroot=$(( (root+arg/root)/2 ))
+ (( newroot == root )) && { echo $root; return; }
+ let root=newroot
+ done
+}
+
+sqroot "$@"
#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 2002 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+#
# substr -- a function to emulate the ancient ksh builtin
#
#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 2002 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+#
# substr -- a function to emulate the ancient ksh builtin
#
--- /dev/null
+#
+# substr -- a function to emulate the ancient ksh builtin
+#
+
+# -l == remove shortest from left
+# -L == remove longest from left
+# -r == remove shortest from right (the default)
+# -R == remove longest from right
+
+substr()
+{
+ local flag pat str
+ local usage="usage: substr -lLrR pat string or substr string pat"
+ local options="l:L:r:R:"
+
+ OPTIND=1
+ while getopts "$options" c
+ do
+ case "$c" in
+ l | L | r | R)
+ flag="-$c"
+ pat="$OPTARG"
+ ;;
+ '?')
+ echo "$usage"
+ return 1
+ ;;
+ esac
+ done
+
+ if [ "$OPTIND" -gt 1 ] ; then
+ shift $(( $OPTIND -1 ))
+ fi
+
+ if [ "$#" -eq 0 ] || [ "$#" -gt 2 ] ; then
+ echo "substr: bad argument count"
+ return 2
+ fi
+
+ str="$1"
+
+ #
+ # We don't want -f, but we don't want to turn it back on if
+ # we didn't have it already
+ #
+ case "$-" in
+ "*f*")
+ ;;
+ *)
+ fng=1
+ set -f
+ ;;
+ esac
+
+ case "$flag" in
+ -l)
+ str="${str#$pat}" # substr -l pat string
+ ;;
+ -L)
+ str="${str##$pat}" # substr -L pat string
+ ;;
+ -r)
+ str="${str%$pat}" # substr -r pat string
+ ;;
+ -R)
+ str="${str%%$pat}" # substr -R pat string
+ ;;
+ *)
+ str="${str%$2}" # substr string pat
+ ;;
+ esac
+
+ echo "$str"
+
+ #
+ # If we had file name generation when we started, re-enable it
+ #
+ if [ "$fng" = "1" ] ; then
+ set +f
+ fi
+}
--- /dev/null
+#
+# substr -- a function to emulate the ancient ksh builtin
+#
+
+#
+# -l == shortest from left
+# -L == longest from left
+# -r == shortest from right (the default)
+# -R == longest from right
+
+substr()
+{
+ local flag pat str
+ local usage="usage: substr -lLrR pat string or substr string pat"
+
+ case "$1" in
+ -l | -L | -r | -R)
+ flag="$1"
+ pat="$2"
+ shift 2
+ ;;
+ -*)
+ echo "substr: unknown option: $1"
+ echo "$usage"
+ return 1
+ ;;
+ *)
+ flag="-r"
+ pat="$2"
+ ;;
+ esac
+
+ if [ "$#" -eq 0 ] || [ "$#" -gt 2 ] ; then
+ echo "substr: bad argument count"
+ return 2
+ fi
+
+ str="$1"
+
+ #
+ # We don't want -f, but we don't want to turn it back on if
+ # we didn't have it already
+ #
+ case "$-" in
+ "*f*")
+ ;;
+ *)
+ fng=1
+ set -f
+ ;;
+ esac
+
+ case "$flag" in
+ -l)
+ str="${str#$pat}" # substr -l pat string
+ ;;
+ -L)
+ str="${str##$pat}" # substr -L pat string
+ ;;
+ -r)
+ str="${str%$pat}" # substr -r pat string
+ ;;
+ -R)
+ str="${str%%$pat}" # substr -R pat string
+ ;;
+ *)
+ str="${str%$2}" # substr string pat
+ ;;
+ esac
+
+ echo "$str"
+
+ #
+ # If we had file name generation when we started, re-enable it
+ #
+ if [ "$fng" = "1" ] ; then
+ set +f
+ fi
+}
--- /dev/null
+#
+# term -- a shell function to set the terminal type interactively or not.
+#
+
+term()
+{
+ local t
+
+ if [ $# != 0 ] ; then
+ eval $(tset -sQ $1)
+ else # interactive
+ if [ -z "$TERM" ] ; then
+ TERM="unknown"
+ fi
+
+ case "$TERM" in
+ network|dialup|unknown|lat)
+ TERM=unknown
+ ;;
+ *)
+ eval $(tset -sQ)
+ ;;
+ esac
+
+ while [ "$TERM" = "unknown" ] ; do
+ echo -n "Terminal type: "
+ read t
+ if [ -n "$t" ] ; then
+ eval $(tset -sQ $t)
+ fi
+ done
+ fi
+}
+
+
# case, the value is printed in a form which would yield the same value
# if typed as input to the shell itself.
#
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 1994 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
whatis()
{
--- /dev/null
+#
+# whatis -- and implementation of the 10th Edition Unix sh builtin `whatis'
+# command.
+#
+# usage: whatis arg [...]
+#
+# For each argument, whatis prints the associated value as a parameter,
+# builtin, function, alias, or executable file as appropriate. In each
+# case, the value is printed in a form which would yield the same value
+# if typed as input to the shell itself.
+#
+
+whatis()
+{
+ local wusage='usage: whatis arg [arg...]'
+ local fail=0
+
+ if [ $# -eq 0 ] ; then
+ echo "$wusage"
+ return 1
+ fi
+
+ for arg
+ do
+ case $(builtin type -type $arg 2>/dev/null) in
+ "alias")
+ builtin alias "$arg"
+ ;;
+ "function")
+ builtin type "$arg" | sed 1d
+ ;;
+ "builtin")
+ echo builtin "$arg"
+ ;;
+ "file")
+ builtin type -path "$arg"
+ ;;
+ *)
+ # OK, we could have a variable, or we could have nada
+ if [ "$(eval echo \${$arg+set})" = "set" ] ; then
+ # It is a variable, and it is set
+ echo -n "$arg="
+ eval echo '\"'\$$arg'\"'
+ else
+ echo whatis: $arg: not found
+ fail=1
+ fi
+ ;;
+ esac
+ done
+ return $fail
+}
# Chet Ramey
# chet@ins.CWRU.Edu
#
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 1994 Chester Ramey
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# TThis program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
whence()
{
local vflag= path=
--- /dev/null
+#
+# An almost-ksh compatible `whence' command. This is as hairy as it is
+# because of the desire to exactly mimic ksh.
+#
+# This depends somewhat on knowing the format of the output of the bash
+# `builtin type' command.
+#
+# Chet Ramey
+# chet@ins.CWRU.Edu
+#
+whence()
+{
+ local vflag= path=
+
+ if [ "$#" = "0" ] ; then
+ echo "whence: argument expected"
+ return 1
+ fi
+ case "$1" in
+ -v) vflag=1
+ shift 1
+ ;;
+ -*) echo "whence: bad option: $1"
+ return 1
+ ;;
+ *) ;;
+ esac
+
+ if [ "$#" = "0" ] ; then
+ echo "whence: bad argument count"
+ return 1
+ fi
+
+ for cmd
+ do
+ if [ "$vflag" ] ; then
+ echo $(builtin type $cmd | sed 1q)
+ else
+ path=$(builtin type -path $cmd)
+ if [ "$path" ] ; then
+ echo $path
+ else
+ case "$cmd" in
+ /*) if [ -x "$cmd" ]; then
+ echo "$cmd"
+ fi
+ ;;
+ *) case "$(builtin type -type $cmd)" in
+ "") ;;
+ *) echo "$cmd"
+ ;;
+ esac
+ ;;
+ esac
+ fi
+ fi
+ done
+ return 0
+}
#
# usage: which [-as] command [command...]
#
+#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 1999 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
which()
{
--- /dev/null
+#
+# which - emulation of `which' as it appears in FreeBSD
+#
+# usage: which [-as] command [command...]
+#
+
+which()
+{
+ local aflag sflag ES a opt
+
+ OPTIND=1
+ while builtin getopts as opt ; do
+ case "$opt" in
+ a) aflag=-a ;;
+ s) sflag=1 ;;
+ ?) echo "which: usage: which [-as] command [command ...]" >&2
+ exit 2 ;;
+ esac
+ done
+
+ (( $OPTIND > 1 )) && shift $(( $OPTIND - 1 ))
+
+ # without command arguments, exit with status 1
+ ES=1
+
+ # exit status is 0 if all commands are found, 1 if any are not found
+ for command; do
+ # if $command is a function, make sure we add -a so type
+ # will look in $PATH after finding the function
+ a=$aflag
+ case "$(builtin type -t $command)" in
+ "function") a=-a;;
+ esac
+
+ if [ -n "$sflag" ]; then
+ builtin type -p $a $command >/dev/null 2>&1
+ else
+ builtin type -p $a $command
+ fi
+ ES=$?
+ done
+
+ return $ES
+}
--- /dev/null
+# xalias - convert csh alias commands to bash functions
+# from Mohit Aron <aron@cs.rice.edu>
+# posted to usenet as <4i5p17$bnu@larry.rice.edu>
+function xalias ()
+{
+ if [ "x$2" = "x" ]
+ then
+ declare -f $1
+ else
+ case $2 in
+ *[#\!]*)
+ comm=$(echo $2 | sed 's/\\!\*/\"$\@\"/g
+ s/\\!:\([1-9]\)/\"$\1\"/g
+ s/#/\\#/g')
+ ;;
+ *)
+ comm="$2 \"\$@\"" ;;
+ esac
+
+ eval function $1 \(\) "{" command "$comm" "; }"
+ fi
+}
--- /dev/null
+#! /bin/bash
+#From: kaz@cafe.net (Kaz Kylheku)
+#Newsgroups: comp.unix.shell
+#Subject: Why not roll your own @#$% find! (was: splitting directory off from filename)
+#Message-ID: <6n1117$tp1@espresso.cafe.net>
+#Date: Fri, 26 Jun 1998 20:47:34 GMT
+
+# $1 = dirname, $2 = pattern, optional $3 = action
+xfind()
+{
+ local x
+ local dir="$1"
+
+ # descend into specified directory
+
+ builtin cd -L "$1" || {
+ echo "${FUNCNAME}: cannot change dir to $1" >&2
+ return 1
+ }
+
+ #
+ # default action is to print the filename
+ #
+ if [ -n "$3" ]; then
+ action="$3"
+ else
+ action='printf -- "%s\n"'
+ fi
+
+ # process ordinary files that match pattern
+
+ for x in $2 ; do
+ if [ -f "$x" ] ; then
+ eval "$action" "$x"
+ fi
+ done
+
+ # now descend into subdirectories, avoiding symbolic links
+ # and directories that start with a period.
+
+ for x in * ; do
+ if [ -d "$x" ] && [ ! -L "$x" ] ; then
+ $FUNCNAME "$x" "$2" "$action"
+ fi
+ done
+
+ # finally, pop back up
+
+ builtin cd -L ..
+}
+
+#xfind "$@"
--- /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
/* See Makefile for compilation details. */
+/*
+ Copyright (C) 1999-2009 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash.
+ 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)
--- /dev/null
+/* basename - return nondirectory portion of pathname */
+
+/* See Makefile for compilation details. */
+
+#include "config.h"
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#include <stdio.h>
+#include "builtins.h"
+#include "shell.h"
+#include "common.h"
+
+basename_builtin (list)
+ WORD_LIST *list;
+{
+ int slen, sufflen, off;
+ char *string, *suffix, *fn;
+
+ if (list == 0)
+ {
+ builtin_usage ();
+ return (EX_USAGE);
+ }
+
+ if (no_options (list))
+ return (EX_USAGE);
+
+ string = list->word->word;
+ suffix = (char *)NULL;
+ if (list->next)
+ {
+ list = list->next;
+ suffix = list->word->word;
+ }
+
+ if (list->next)
+ {
+ builtin_usage ();
+ return (EX_USAGE);
+ }
+
+ slen = strlen (string);
+
+ /* Strip trailing slashes */
+ while (slen > 0 && string[slen - 1] == '/')
+ slen--;
+
+ /* (2) If string consists entirely of slash characters, string shall be
+ set to a single slash character. In this case, skip steps (3)
+ through (5). */
+ if (slen == 0)
+ {
+ fputs ("/\n", stdout);
+ return (EXECUTION_SUCCESS);
+ }
+
+ /* (3) If there are any trailing slash characters in string, they
+ shall be removed. */
+ string[slen] = '\0';
+
+ /* (4) If there are any slash characters remaining in string, the prefix
+ of string up to an including the last slash character in string
+ shall be removed. */
+ while (--slen >= 0)
+ if (string[slen] == '/')
+ break;
+
+ fn = string + slen + 1;
+
+ /* (5) If the suffix operand is present, is not identical to the
+ characters remaining in string, and is identical to a suffix
+ of the characters remaining in string, the suffix suffix
+ shall be removed from string. Otherwise, string shall not be
+ modified by this step. */
+ if (suffix)
+ {
+ sufflen = strlen (suffix);
+ slen = strlen (fn);
+ if (sufflen < slen)
+ {
+ off = slen - sufflen;
+ if (strcmp (fn + off, suffix) == 0)
+ fn[off] = '\0';
+ }
+ }
+ printf ("%s\n", fn);
+ return (EXECUTION_SUCCESS);
+}
+
+char *basename_doc[] = {
+ "Return non-directory portion of pathname.",
+ "",
+ "The STRING is converted to a filename corresponding to the last",
+ "pathname component in STRING. If the suffix string SUFFIX is",
+ "supplied, it is removed.",
+ (char *)NULL
+};
+
+/* The standard structure describing a builtin command. bash keeps an array
+ of these structures. */
+struct builtin basename_struct = {
+ "basename", /* builtin name */
+ basename_builtin, /* function implementing the builtin */
+ BUILTIN_ENABLED, /* initial flags for builtin */
+ basename_doc, /* array of long documentation strings. */
+ "basename string [suffix]", /* usage synopsis */
+ 0 /* reserved for internal use */
+};
--- /dev/null
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Adam S. Moskowitz of Menlo Consulting and Marciano Pitargue.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static const char copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static const char sccsid[] = "@(#)cut.c 8.3 (Berkeley) 5/4/95";
+#endif /* not lint */
+
+#include <config.h>
+
+#include <ctype.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "bashansi.h"
+
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#include "builtins.h"
+#include "shell.h"
+#include "bashgetopt.h"
+#include "common.h"
+
+#if !defined (errno)
+extern int errno;
+#endif
+
+#if !defined (_POSIX2_LINE_MAX)
+# define _POSIX2_LINE_MAX 2048
+#endif
+
+static int cflag;
+static char dchar;
+static int dflag;
+static int fflag;
+static int sflag;
+
+static int autostart, autostop, maxval;
+static char positions[_POSIX2_LINE_MAX + 1];
+
+static int c_cut __P((FILE *, char *));
+static int f_cut __P((FILE *, char *));
+static int get_list __P((char *));
+static char *_cut_strsep __P((char **, const char *));
+
+int
+cut_builtin(list)
+ WORD_LIST *list;
+{
+ FILE *fp;
+ int (*fcn) __P((FILE *, char *)) = NULL;
+ int ch;
+
+ fcn = NULL;
+ dchar = '\t'; /* default delimiter is \t */
+
+ /* Since we don't support multi-byte characters, the -c and -b
+ options are equivalent, and the -n option is meaningless. */
+ reset_internal_getopt ();
+ while ((ch = internal_getopt (list, "b:c:d:f:sn")) != -1)
+ switch(ch) {
+ case 'b':
+ case 'c':
+ fcn = c_cut;
+ if (get_list(list_optarg) < 0)
+ return (EXECUTION_FAILURE);
+ cflag = 1;
+ break;
+ case 'd':
+ dchar = *list_optarg;
+ dflag = 1;
+ break;
+ case 'f':
+ fcn = f_cut;
+ if (get_list(list_optarg) < 0)
+ return (EXECUTION_FAILURE);
+ fflag = 1;
+ break;
+ case 's':
+ sflag = 1;
+ break;
+ case 'n':
+ break;
+ case '?':
+ default:
+ builtin_usage();
+ return (EX_USAGE);
+ }
+
+ list = loptend;
+
+ if (fflag) {
+ if (cflag) {
+ builtin_usage();
+ return (EX_USAGE);
+ }
+ } else if (!cflag || dflag || sflag) {
+ builtin_usage();
+ return (EX_USAGE);
+ }
+
+ if (list) {
+ while (list) {
+ fp = fopen(list->word->word, "r");
+ if (fp == 0) {
+ builtin_error("%s", list->word->word);
+ return (EXECUTION_FAILURE);
+ }
+ ch = (*fcn)(fp, list->word->word);
+ (void)fclose(fp);
+ if (ch < 0)
+ return (EXECUTION_FAILURE);
+ list = list->next;
+ }
+ } else {
+ ch = (*fcn)(stdin, "stdin");
+ if (ch < 0)
+ return (EXECUTION_FAILURE);
+ }
+
+ return (EXECUTION_SUCCESS);
+}
+
+static int
+get_list(list)
+ char *list;
+{
+ int setautostart, start, stop;
+ char *pos;
+ char *p;
+
+ /*
+ * set a byte in the positions array to indicate if a field or
+ * column is to be selected; use +1, it's 1-based, not 0-based.
+ * This parser is less restrictive than the Draft 9 POSIX spec.
+ * POSIX doesn't allow lists that aren't in increasing order or
+ * overlapping lists. We also handle "-3-5" although there's no
+ * real reason too.
+ */
+ for (; (p = _cut_strsep(&list, ", \t")) != NULL;) {
+ setautostart = start = stop = 0;
+ if (*p == '-') {
+ ++p;
+ setautostart = 1;
+ }
+ if (isdigit((unsigned char)*p)) {
+ start = stop = strtol(p, &p, 10);
+ if (setautostart && start > autostart)
+ autostart = start;
+ }
+ if (*p == '-') {
+ if (isdigit((unsigned char)p[1]))
+ stop = strtol(p + 1, &p, 10);
+ if (*p == '-') {
+ ++p;
+ if (!autostop || autostop > stop)
+ autostop = stop;
+ }
+ }
+ if (*p) {
+ builtin_error("[-cf] list: illegal list value");
+ return -1;
+ }
+ if (!stop || !start) {
+ builtin_error("[-cf] list: values may not include zero");
+ return -1;
+ }
+ if (stop > _POSIX2_LINE_MAX) {
+ builtin_error("[-cf] list: %d too large (max %d)",
+ stop, _POSIX2_LINE_MAX);
+ return -1;
+ }
+ if (maxval < stop)
+ maxval = stop;
+ for (pos = positions + start; start++ <= stop; *pos++ = 1);
+ }
+
+ /* overlapping ranges */
+ if (autostop && maxval > autostop)
+ maxval = autostop;
+
+ /* set autostart */
+ if (autostart)
+ memset(positions + 1, '1', autostart);
+
+ return 0;
+}
+
+/* ARGSUSED */
+static int
+c_cut(fp, fname)
+ FILE *fp;
+ char *fname;
+{
+ int ch, col;
+ char *pos;
+
+ ch = 0;
+ for (;;) {
+ pos = positions + 1;
+ for (col = maxval; col; --col) {
+ if ((ch = getc(fp)) == EOF)
+ return;
+ if (ch == '\n')
+ break;
+ if (*pos++)
+ (void)putchar(ch);
+ }
+ if (ch != '\n') {
+ if (autostop)
+ while ((ch = getc(fp)) != EOF && ch != '\n')
+ (void)putchar(ch);
+ else
+ while ((ch = getc(fp)) != EOF && ch != '\n');
+ }
+ (void)putchar('\n');
+ }
+ return (0);
+}
+
+static int
+f_cut(fp, fname)
+ FILE *fp;
+ char *fname;
+{
+ int ch, field, isdelim;
+ char *pos, *p, sep;
+ int output;
+ char lbuf[_POSIX2_LINE_MAX + 1];
+
+ for (sep = dchar; fgets(lbuf, sizeof(lbuf), fp);) {
+ output = 0;
+ for (isdelim = 0, p = lbuf;; ++p) {
+ if (!(ch = *p)) {
+ builtin_error("%s: line too long.", fname);
+ return -1;
+ }
+ /* this should work if newline is delimiter */
+ if (ch == sep)
+ isdelim = 1;
+ if (ch == '\n') {
+ if (!isdelim && !sflag)
+ (void)printf("%s", lbuf);
+ break;
+ }
+ }
+ if (!isdelim)
+ continue;
+
+ pos = positions + 1;
+ for (field = maxval, p = lbuf; field; --field, ++pos) {
+ if (*pos) {
+ if (output++)
+ (void)putchar(sep);
+ while ((ch = *p++) != '\n' && ch != sep)
+ (void)putchar(ch);
+ } else {
+ while ((ch = *p++) != '\n' && ch != sep)
+ continue;
+ }
+ if (ch == '\n')
+ break;
+ }
+ if (ch != '\n') {
+ if (autostop) {
+ if (output)
+ (void)putchar(sep);
+ for (; (ch = *p) != '\n'; ++p)
+ (void)putchar(ch);
+ } else
+ for (; (ch = *p) != '\n'; ++p);
+ }
+ (void)putchar('\n');
+ }
+ return (0);
+}
+
+/*
+ * Get next token from string *stringp, where tokens are possibly-empty
+ * strings separated by characters from delim.
+ *
+ * Writes NULs into the string at *stringp to end tokens.
+ * delim need not remain constant from call to call.
+ * On return, *stringp points past the last NUL written (if there might
+ * be further tokens), or is NULL (if there are definitely no more tokens).
+ *
+ * If *stringp is NULL, strsep returns NULL.
+ */
+static char *
+_cut_strsep(stringp, delim)
+ register char **stringp;
+ register const char *delim;
+{
+ register char *s;
+ register const char *spanp;
+ register int c, sc;
+ char *tok;
+
+ if ((s = *stringp) == NULL)
+ return (NULL);
+ for (tok = s;;) {
+ c = *s++;
+ spanp = delim;
+ do {
+ if ((sc = *spanp++) == c) {
+ if (c == 0)
+ s = NULL;
+ else
+ s[-1] = 0;
+ *stringp = s;
+ return (tok);
+ }
+ } while (sc != 0);
+ }
+ /* NOTREACHED */
+}
+
+static char *cut_doc[] = {
+ "Select portions of lines.",
+ "",
+ "Select portions of each line (as specified by LIST) from each FILE",
+ "(by default, the standard input), and write them to the standard output.",
+ "Items specified by LIST are either column positions or fields delimited",
+ "by a special character. Column numbering starts at 1.",
+ (char *)0
+};
+
+struct builtin cut_struct = {
+ "cut",
+ cut_builtin,
+ BUILTIN_ENABLED,
+ cut_doc,
+ "cut -b list [-n] [file ...] OR cut -c list [file ...] OR cut -f list [-s] [-d delim] [file ...]",
+ 0
+};
* chet@po.cwru.edu
*/
+/*
+ Copyright (C) 1999-2009 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash.
+ 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/>.
+*/
+
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
--- /dev/null
+/*
+ * finfo - print file info
+ *
+ * Chet Ramey
+ * chet@po.cwru.edu
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include "posixstat.h"
+#include <stdio.h>
+#include <pwd.h>
+#include <grp.h>
+#include <errno.h>
+#include "posixtime.h"
+
+#include "bashansi.h"
+#include "shell.h"
+#include "builtins.h"
+#include "common.h"
+
+#ifndef errno
+extern int errno;
+#endif
+
+extern char **make_builtin_argv ();
+
+static int printst();
+static int printsome();
+static int printfinfo();
+static int finfo_main();
+
+extern int sh_optind;
+extern char *sh_optarg;
+extern char *this_command_name;
+
+static char *prog;
+static int pmask;
+
+#define OPT_UID 0x00001
+#define OPT_GID 0x00002
+#define OPT_DEV 0x00004
+#define OPT_INO 0x00008
+#define OPT_PERM 0x00010
+#define OPT_LNKNAM 0x00020
+#define OPT_FID 0x00040
+#define OPT_NLINK 0x00080
+#define OPT_RDEV 0x00100
+#define OPT_SIZE 0x00200
+#define OPT_ATIME 0x00400
+#define OPT_MTIME 0x00800
+#define OPT_CTIME 0x01000
+#define OPT_BLKSIZE 0x02000
+#define OPT_BLKS 0x04000
+#define OPT_FTYPE 0x08000
+#define OPT_PMASK 0x10000
+#define OPT_OPERM 0x20000
+
+#define OPT_ASCII 0x1000000
+
+#define OPTIONS "acdgiflmnopsuACGMP:U"
+
+static int
+octal(s)
+char *s;
+{
+ int r;
+
+ r = *s - '0';
+ while (*++s >= '0' && *s <= '7')
+ r = (r * 8) + (*s - '0');
+ return r;
+}
+
+static int
+finfo_main(argc, argv)
+int argc;
+char **argv;
+{
+ register int i;
+ int mode, flags, opt;
+
+ sh_optind = 0; /* XXX */
+ prog = base_pathname(argv[0]);
+ if (argc == 1) {
+ builtin_usage();
+ return(1);
+ }
+ flags = 0;
+ while ((opt = sh_getopt(argc, argv, OPTIONS)) != EOF) {
+ switch(opt) {
+ case 'a': flags |= OPT_ATIME; break;
+ case 'A': flags |= OPT_ATIME|OPT_ASCII; break;
+ case 'c': flags |= OPT_CTIME; break;
+ case 'C': flags |= OPT_CTIME|OPT_ASCII; break;
+ case 'd': flags |= OPT_DEV; break;
+ case 'i': flags |= OPT_INO; break;
+ case 'f': flags |= OPT_FID; break;
+ case 'g': flags |= OPT_GID; break;
+ case 'G': flags |= OPT_GID|OPT_ASCII; break;
+ case 'l': flags |= OPT_LNKNAM; break;
+ case 'm': flags |= OPT_MTIME; break;
+ case 'M': flags |= OPT_MTIME|OPT_ASCII; break;
+ case 'n': flags |= OPT_NLINK; break;
+ case 'o': flags |= OPT_OPERM; break;
+ case 'p': flags |= OPT_PERM; break;
+ case 'P': flags |= OPT_PMASK; pmask = octal(sh_optarg); break;
+ case 's': flags |= OPT_SIZE; break;
+ case 'u': flags |= OPT_UID; break;
+ case 'U': flags |= OPT_UID|OPT_ASCII; break;
+ default: builtin_usage (); return(1);
+ }
+ }
+
+ argc -= sh_optind;
+ argv += sh_optind;
+
+ if (argc == 0) {
+ builtin_usage();
+ return(1);
+ }
+
+ for (i = 0; i < argc; i++)
+ opt = flags ? printsome (argv[i], flags) : printfinfo(argv[i]);
+
+ return(opt);
+}
+
+static struct stat *
+getstat(f)
+char *f;
+{
+ static struct stat st;
+ int fd, r;
+ intmax_t lfd;
+
+ if (strncmp(f, "/dev/fd/", 8) == 0) {
+ if ((legal_number(f + 8, &lfd) == 0) || (int)lfd != lfd) {
+ builtin_error("%s: invalid fd", f + 8);
+ return ((struct stat *)0);
+ }
+ fd = lfd;
+ r = fstat(fd, &st);
+ } else
+#ifdef HAVE_LSTAT
+ r = lstat(f, &st);
+#else
+ r = stat(f, &st);
+#endif
+ if (r < 0) {
+ builtin_error("%s: cannot stat: %s", f, strerror(errno));
+ return ((struct stat *)0);
+ }
+ return (&st);
+}
+
+static int
+printfinfo(f)
+char *f;
+{
+ struct stat *st;
+
+ st = getstat(f);
+ return (st ? printst(st) : 1);
+}
+
+static int
+getperm(m)
+int m;
+{
+ return (m & (S_IRWXU|S_IRWXG|S_IRWXO|S_ISUID|S_ISGID));
+}
+
+static int
+perms(m)
+int m;
+{
+ char ubits[4], gbits[4], obits[4]; /* u=rwx,g=rwx,o=rwx */
+ int i;
+
+ i = 0;
+ if (m & S_IRUSR)
+ ubits[i++] = 'r';
+ if (m & S_IWUSR)
+ ubits[i++] = 'w';
+ if (m & S_IXUSR)
+ ubits[i++] = 'x';
+ ubits[i] = '\0';
+
+ i = 0;
+ if (m & S_IRGRP)
+ gbits[i++] = 'r';
+ if (m & S_IWGRP)
+ gbits[i++] = 'w';
+ if (m & S_IXGRP)
+ gbits[i++] = 'x';
+ gbits[i] = '\0';
+
+ i = 0;
+ if (m & S_IROTH)
+ obits[i++] = 'r';
+ if (m & S_IWOTH)
+ obits[i++] = 'w';
+ if (m & S_IXOTH)
+ obits[i++] = 'x';
+ obits[i] = '\0';
+
+ if (m & S_ISUID)
+ ubits[2] = (m & S_IXUSR) ? 's' : 'S';
+ if (m & S_ISGID)
+ gbits[2] = (m & S_IXGRP) ? 's' : 'S';
+ if (m & S_ISVTX)
+ obits[2] = (m & S_IXOTH) ? 't' : 'T';
+
+ printf ("u=%s,g=%s,o=%s", ubits, gbits, obits);
+}
+
+static int
+printmode(mode)
+int mode;
+{
+ if (S_ISBLK(mode))
+ printf("S_IFBLK ");
+ if (S_ISCHR(mode))
+ printf("S_IFCHR ");
+ if (S_ISDIR(mode))
+ printf("S_IFDIR ");
+ if (S_ISREG(mode))
+ printf("S_IFREG ");
+ if (S_ISFIFO(mode))
+ printf("S_IFIFO ");
+ if (S_ISLNK(mode))
+ printf("S_IFLNK ");
+ if (S_ISSOCK(mode))
+ printf("S_IFSOCK ");
+#ifdef S_ISWHT
+ if (S_ISWHT(mode))
+ printf("S_ISWHT ");
+#endif
+ perms(getperm(mode));
+ printf("\n");
+}
+
+static int
+printst(st)
+struct stat *st;
+{
+ struct passwd *pw;
+ struct group *gr;
+ char *owner;
+ int ma, mi, d;
+
+ ma = major (st->st_rdev);
+ mi = minor (st->st_rdev);
+#if defined (makedev)
+ d = makedev (ma, mi);
+#else
+ d = st->st_rdev & 0xFF;
+#endif
+ printf("Device (major/minor): %d (%d/%d)\n", d, ma, mi);
+
+ printf("Inode: %d\n", (int) st->st_ino);
+ printf("Mode: (%o) ", (int) st->st_mode);
+ printmode((int) st->st_mode);
+ printf("Link count: %d\n", (int) st->st_nlink);
+ pw = getpwuid(st->st_uid);
+ owner = pw ? pw->pw_name : "unknown";
+ printf("Uid of owner: %d (%s)\n", (int) st->st_uid, owner);
+ gr = getgrgid(st->st_gid);
+ owner = gr ? gr->gr_name : "unknown";
+ printf("Gid of owner: %d (%s)\n", (int) st->st_gid, owner);
+ printf("Device type: %d\n", (int) st->st_rdev);
+ printf("File size: %ld\n", (long) st->st_size);
+ printf("File last access time: %s", ctime (&st->st_atime));
+ printf("File last modify time: %s", ctime (&st->st_mtime));
+ printf("File last status change time: %s", ctime (&st->st_ctime));
+ fflush(stdout);
+ return(0);
+}
+
+static int
+printsome(f, flags)
+char *f;
+int flags;
+{
+ struct stat *st;
+ struct passwd *pw;
+ struct group *gr;
+ int p;
+ char *b;
+
+ st = getstat(f);
+ if (st == NULL)
+ return (1);
+
+ /* Print requested info */
+ if (flags & OPT_ATIME) {
+ if (flags & OPT_ASCII)
+ printf("%s", ctime(&st->st_atime));
+ else
+ printf("%ld\n", st->st_atime);
+ } else if (flags & OPT_MTIME) {
+ if (flags & OPT_ASCII)
+ printf("%s", ctime(&st->st_mtime));
+ else
+ printf("%ld\n", st->st_mtime);
+ } else if (flags & OPT_CTIME) {
+ if (flags & OPT_ASCII)
+ printf("%s", ctime(&st->st_ctime));
+ else
+ printf("%ld\n", st->st_ctime);
+ } else if (flags & OPT_DEV)
+ printf("%d\n", st->st_dev);
+ else if (flags & OPT_INO)
+ printf("%d\n", st->st_ino);
+ else if (flags & OPT_FID)
+ printf("%d:%ld\n", st->st_dev, st->st_ino);
+ else if (flags & OPT_NLINK)
+ printf("%d\n", st->st_nlink);
+ else if (flags & OPT_LNKNAM) {
+#ifdef S_ISLNK
+ b = xmalloc(4096);
+ p = readlink(f, b, 4096);
+ if (p >= 0 && p < 4096)
+ b[p] = '\0';
+ else {
+ p = errno;
+ strcpy(b, prog);
+ strcat(b, ": ");
+ strcat(b, strerror(p));
+ }
+ printf("%s\n", b);
+ free(b);
+#else
+ printf("%s\n", f);
+#endif
+ } else if (flags & OPT_PERM) {
+ perms(st->st_mode);
+ printf("\n");
+ } else if (flags & OPT_OPERM)
+ printf("%o\n", getperm(st->st_mode));
+ else if (flags & OPT_PMASK)
+ printf("%o\n", getperm(st->st_mode) & pmask);
+ else if (flags & OPT_UID) {
+ pw = getpwuid(st->st_uid);
+ if (flags & OPT_ASCII)
+ printf("%s\n", pw ? pw->pw_name : "unknown");
+ else
+ printf("%d\n", st->st_uid);
+ } else if (flags & OPT_GID) {
+ gr = getgrgid(st->st_gid);
+ if (flags & OPT_ASCII)
+ printf("%s\n", gr ? gr->gr_name : "unknown");
+ else
+ printf("%d\n", st->st_gid);
+ } else if (flags & OPT_SIZE)
+ printf("%ld\n", (long) st->st_size);
+
+ return (0);
+}
+
+#ifndef NOBUILTIN
+int
+finfo_builtin(list)
+ WORD_LIST *list;
+{
+ int c, r;
+ char **v;
+ WORD_LIST *l;
+
+ v = make_builtin_argv (list, &c);
+ r = finfo_main (c, v);
+ free (v);
+
+ return r;
+}
+
+static char *finfo_doc[] = {
+ "Display information about file attributes.",
+ "",
+ "Display information about each FILE. Only single operators should",
+ "be supplied. If no options are supplied, a summary of the info",
+ "available about each FILE is printed. If FILE is of the form",
+ "/dev/fd/XX, file descriptor XX is described. Operators, if supplied,",
+ "have the following meanings:",
+ "",
+ " -a last file access time",
+ " -A last file access time in ctime format",
+ " -c last file status change time",
+ " -C last file status change time in ctime format",
+ " -m last file modification time",
+ " -M last file modification time in ctime format",
+ " -d device",
+ " -i inode",
+ " -f composite file identifier (device:inode)",
+ " -g gid of owner",
+ " -G group name of owner",
+ " -l name of file pointed to by symlink",
+ " -n link count",
+ " -o permissions in octal",
+ " -p permissions in ascii",
+ " -P mask permissions ANDed with MASK (like with umask)",
+ " -s file size in bytes",
+ " -u uid of owner",
+ " -U user name of owner",
+ (char *)0
+};
+
+struct builtin finfo_struct = {
+ "finfo",
+ finfo_builtin,
+ BUILTIN_ENABLED,
+ finfo_doc,
+ "finfo [-acdgiflmnopsuACGMPU] file [file...]",
+ 0
+};
+#endif
+
+#ifdef NOBUILTIN
+#if defined (PREFER_STDARG)
+# include <stdarg.h>
+#else
+# if defined (PREFER_VARARGS)
+# include <varargs.h>
+# endif
+#endif
+
+char *this_command_name;
+
+main(argc, argv)
+int argc;
+char **argv;
+{
+ this_command_name = argv[0];
+ exit(finfo_main(argc, argv));
+}
+
+void
+builtin_usage()
+{
+ fprintf(stderr, "%s: usage: %s [-%s] [file ...]\n", prog, OPTIONS);
+}
+
+#ifndef HAVE_STRERROR
+char *
+strerror(e)
+int e;
+{
+ static char ebuf[40];
+ extern int sys_nerr;
+ extern char *sys_errlist[];
+
+ if (e < 0 || e > sys_nerr) {
+ sprintf(ebuf,"Unknown error code %d", e);
+ return (&ebuf[0]);
+ }
+ return (sys_errlist[e]);
+}
+#endif
+
+char *
+xmalloc(s)
+size_t s;
+{
+ char *ret;
+ extern char *malloc();
+
+ ret = malloc(s);
+ if (ret)
+ return (ret);
+ fprintf(stderr, "%s: cannot malloc %d bytes\n", prog, s);
+ exit(1);
+}
+
+char *
+base_pathname(p)
+char *p;
+{
+ char *t;
+
+ if (t = strrchr(p, '/'))
+ return(++t);
+ return(p);
+}
+
+int
+legal_number (string, result)
+ char *string;
+ long *result;
+{
+ int sign;
+ long value;
+
+ sign = 1;
+ value = 0;
+
+ if (result)
+ *result = 0;
+
+ /* Skip leading whitespace characters. */
+ while (whitespace (*string))
+ string++;
+
+ if (!*string)
+ return (0);
+
+ /* We allow leading `-' or `+'. */
+ if (*string == '-' || *string == '+')
+ {
+ if (!digit (string[1]))
+ return (0);
+
+ if (*string == '-')
+ sign = -1;
+
+ string++;
+ }
+
+ while (digit (*string))
+ {
+ if (result)
+ value = (value * 10) + digit_value (*string);
+ string++;
+ }
+
+ /* Skip trailing whitespace, if any. */
+ while (whitespace (*string))
+ string++;
+
+ /* Error if not at end of string. */
+ if (*string)
+ return (0);
+
+ if (result)
+ *result = value * sign;
+
+ return (1);
+}
+
+int sh_optind;
+char *sh_optarg;
+int sh_opterr;
+
+extern int optind;
+extern char *optarg;
+
+int
+sh_getopt(c, v, o)
+int c;
+char **v, *o;
+{
+ int r;
+
+ r = getopt(c, v, o);
+ sh_optind = optind;
+ sh_optarg = optarg;
+ return r;
+}
+
+#if defined (USE_VARARGS)
+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;
+
+ if (this_command_name && *this_command_name)
+ fprintf (stderr, "%s: ", this_command_name);
+
+#if defined (PREFER_STDARG)
+ va_start (args, format);
+#else
+ va_start (args);
+#endif
+
+ vfprintf (stderr, format, args);
+ va_end (args);
+ fprintf (stderr, "\n");
+}
+#else
+void
+builtin_error (format, arg1, arg2, arg3, arg4, arg5)
+ char *format, *arg1, *arg2, *arg3, *arg4, *arg5;
+{
+ if (this_command_name && *this_command_name)
+ fprintf (stderr, "%s: ", this_command_name);
+
+ fprintf (stderr, format, arg1, arg2, arg3, arg4, arg5);
+ fprintf (stderr, "\n");
+ fflush (stderr);
+}
+#endif /* !USE_VARARGS */
+
+#endif
--- /dev/null
+/*
+ * ORIGINAL COPYRIGHT STATEMENT:
+ *
+ * Copyright (c) 1994 Winning Strategies, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Winning Strategies, Inc.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * POSIX.2 getconf utility
+ *
+ * Originally Written by:
+ * J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
+ *
+ * Heavily modified for inclusion in bash by
+ * Chet Ramey <chet@po.cwru.edu>
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+
+#include <stdio.h>
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+#ifdef HAVE_LOCALE_H
+#include <locale.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <errno.h>
+
+#include "typemax.h"
+
+#include "bashansi.h"
+#include "shell.h"
+#include "builtins.h"
+#include "stdc.h"
+#include "common.h"
+#include "bashgetopt.h"
+
+#include "getconf.h"
+
+#ifndef errno
+extern int errno;
+#endif
+
+struct conf_variable
+{
+ const char *name;
+ enum { SYSCONF, CONFSTR, PATHCONF, CONSTANT, LLCONST, G_UNDEF } type;
+ long value;
+};
+
+#ifndef HAVE_CONFSTR
+static size_t confstr __P((int, char *, size_t));
+#endif
+
+#ifndef HAVE_SYSCONF
+static long sysconf __P((int));
+#endif
+
+#ifndef HAVE_PATHCONF
+static long pathconf __P((const char *, int));
+#endif
+
+/* Hack to `encode' values wider than long into a conf_variable */
+#define VAL_LLONG_MIN -1000
+#define VAL_LLONG_MAX -1001
+#define VAL_ULLONG_MAX -1002
+
+static const struct conf_variable conf_table[] =
+{
+ /* POSIX.2 Configurable Variable Values */
+ { "PATH", CONFSTR, _CS_PATH },
+ { "CS_PATH", CONFSTR, _CS_PATH },
+
+ /* POSIX.1 Configurable Variable Values (only Solaris?) */
+#if defined (_CS_LFS_CFLAGS)
+ { "LFS_CFLAGS", CONFSTR, _CS_LFS_CFLAGS },
+ { "LFS_LDFLAGS", CONFSTR, _CS_LFS_LDFLAGS },
+ { "LFS_LIBS", CONFSTR, _CS_LFS_LIBS },
+ { "LFS_LINTFLAGS", CONFSTR, _CS_LFS_LINTFLAGS },
+#endif
+#if defined (_CS_LFS64_CFLAGS)
+ { "LFS64_CFLAGS", CONFSTR, _CS_LFS64_CFLAGS },
+ { "LFS64_LDFLAGS", CONFSTR, _CS_LFS64_LDFLAGS },
+ { "LFS64_LIBS", CONFSTR, _CS_LFS64_LIBS },
+ { "LFS64_LINTFLAGS", CONFSTR, _CS_LFS64_LINTFLAGS },
+#endif
+
+ /* Single UNIX Specification version 2 Configurable Variable Values. The
+ SYSCONF variables say whether or not the appropriate CONFSTR variables
+ are available. */
+#if defined (_SC_XBS5_ILP32_OFF32)
+ { "XBS5_ILP32_OFF32", SYSCONF, _SC_XBS5_ILP32_OFF32 },
+ { "_XBS5_ILP32_OFF32", SYSCONF, _SC_XBS5_ILP32_OFF32 },
+#endif
+#if defined (_CS_XBS5_ILP32_OFF32_CFLAGS)
+ { "XBS5_ILP32_OFF32_CFLAGS", CONFSTR, _CS_XBS5_ILP32_OFF32_CFLAGS },
+ { "XBS5_ILP32_OFF32_LDFLAGS", CONFSTR, _CS_XBS5_ILP32_OFF32_LDFLAGS },
+ { "XBS5_ILP32_OFF32_LIBS", CONFSTR, _CS_XBS5_ILP32_OFF32_LIBS },
+ { "XBS5_ILP32_OFF32_LINTFLAGS", CONFSTR, _CS_XBS5_ILP32_OFF32_LINTFLAGS },
+#endif
+#if defined (_SC_XBS5_ILP32_OFFBIG)
+ { "XBS5_ILP32_OFFBIG", SYSCONF, _SC_XBS5_ILP32_OFFBIG },
+ { "_XBS5_ILP32_OFFBIG", SYSCONF, _SC_XBS5_ILP32_OFFBIG },
+#endif
+#if defined (_CS_XBS5_ILP32_OFFBIG_CFLAGS)
+ { "XBS5_ILP32_OFFBIG_CFLAGS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_CFLAGS },
+ { "XBS5_ILP32_OFFBIG_LDFLAGS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_LDFLAGS },
+ { "XBS5_ILP32_OFFBIG_LIBS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_LIBS },
+ { "XBS5_ILP32_OFFBIG_LINTFLAGS", CONFSTR, _CS_XBS5_ILP32_OFFBIG_LINTFLAGS },
+#endif
+#if defined (_SC_XBS5_LP64_OFF64)
+ { "XBS5_LP64_OFF64", SYSCONF, _SC_XBS5_LP64_OFF64 },
+ { "_XBS5_LP64_OFF64", SYSCONF, _SC_XBS5_LP64_OFF64 },
+#endif
+#if defined (_CS_XBS5_LP64_OFF64_CFLAGS)
+ { "XBS5_LP64_OFF64_CFLAGS", CONFSTR, _CS_XBS5_LP64_OFF64_CFLAGS },
+ { "XBS5_LP64_OFF64_LDFLAGS", CONFSTR, _CS_XBS5_LP64_OFF64_LDFLAGS },
+ { "XBS5_LP64_OFF64_LIBS", CONFSTR, _CS_XBS5_LP64_OFF64_LIBS },
+ { "XBS5_LP64_OFF64_LINTFLAGS", CONFSTR, _CS_XBS5_LP64_OFF64_LINTFLAGS },
+#endif
+#if defined (_SC_XBS5_LPBIG_OFFBIG)
+ { "XBS5_LPBIG_OFFBIG", SYSCONF, _SC_XBS5_LPBIG_OFFBIG },
+ { "_XBS5_LPBIG_OFFBIG", SYSCONF, _SC_XBS5_LPBIG_OFFBIG },
+#endif
+#if defined (_CS_XBS5_LPBIG_OFFBIG_CFLAGS)
+ { "XBS5_LPBIG_OFFBIG_CFLAGS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_CFLAGS },
+ { "XBS5_LPBIG_OFFBIG_LDFLAGS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_LDFLAGS },
+ { "XBS5_LPBIG_OFFBIG_LIBS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_LIBS },
+ { "XBS5_LPBIG_OFFBIG_LINTFLAGS", CONFSTR, _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS },
+#endif
+
+ /* Single UNIX Specification version 3 (POSIX.1-200x) Configurable Variable
+ Values. The SYSCONF variables say whether or not the appropriate CONFSTR
+ variables are available. */
+
+#if defined (_SC_POSIX_V6_ILP32_OFF32)
+ { "_POSIX_V6_ILP32_OFF32", SYSCONF, _SC_POSIX_V6_ILP32_OFF32 },
+#endif
+#if defined (_CS_POSIX_V6_ILP32_OFF32_CFLAGS)
+ { "POSIX_V6_ILP32_OFF32_CFLAGS", CONFSTR, _CS_POSIX_V6_ILP32_OFF32_CFLAGS },
+ { "POSIX_V6_ILP32_OFF32_LDFLAGS", CONFSTR, _CS_POSIX_V6_ILP32_OFF32_LDFLAGS },
+ { "POSIX_V6_ILP32_OFF32_LIBS", CONFSTR, _CS_POSIX_V6_ILP32_OFF32_LIBS },
+#endif
+#if defined (_CS_POSIX_V6_ILP32_OFF32_LINTFLAGS)
+ { "POSIX_V6_ILP32_OFF32_LINTFLAGS", CONFSTR, _CS_POSIX_V6_ILP32_OFF32_LINTFLAGS },
+#endif
+#if defined (_SC_POSIX_V6_ILP32_OFFBIG)
+ { "_POSIX_V6_ILP32_OFFBIG", SYSCONF, _SC_POSIX_V6_ILP32_OFFBIG },
+#endif
+#if defined (_CS_POSIX_V6_ILP32_OFFBIG_CFLAGS)
+ { "POSIX_V6_ILP32_OFFBIG_CFLAGS", CONFSTR, _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS },
+ { "POSIX_V6_ILP32_OFFBIG_LDFLAGS", CONFSTR, _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS },
+ { "POSIX_V6_ILP32_OFFBIG_LIBS", CONFSTR, _CS_POSIX_V6_ILP32_OFFBIG_LIBS },
+#endif
+#if defined (_CS_POSIX_V6_ILP32_OFFBIG_LINTFLAGS)
+ { "POSIX_V6_ILP32_OFFBIG_LINTFLAGS", CONFSTR, _CS_POSIX_V6_ILP32_OFFBIG_LINTFLAGS },
+#endif
+#if defined (_SC_POSIX_V6_LP64_OFF64)
+ { "_POSIX_V6_LP64_OFF64", SYSCONF, _SC_POSIX_V6_LP64_OFF64 },
+#endif
+#if defined (_CS_POSIX_V6_LP64_OFF64_CFLAGS)
+ { "POSIX_V6_LP64_OFF64_CFLAGS", CONFSTR, _CS_POSIX_V6_LP64_OFF64_CFLAGS },
+ { "POSIX_V6_LP64_OFF64_LDFLAGS", CONFSTR, _CS_POSIX_V6_LP64_OFF64_LDFLAGS },
+ { "POSIX_V6_LP64_OFF64_LIBS", CONFSTR, _CS_POSIX_V6_LP64_OFF64_LIBS },
+#endif
+#if defined (CS_POSIX_V6_LP64_OFF64_LINTFLAGS)
+ { "POSIX_V6_LP64_OFF64_LINTFLAGS", CONFSTR, _CS_POSIX_V6_LP64_OFF64_LINTFLAGS },
+#endif
+#if defined (_SC_POSIX_V6_LPBIG_OFFBIG)
+ { "_POSIX_V6_LPBIG_OFFBIG", SYSCONF, _SC_POSIX_V6_LPBIG_OFFBIG },
+#endif
+#if defined (_CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS)
+ { "POSIX_V6_LPBIG_OFFBIG_CFLAGS", CONFSTR, _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS },
+ { "POSIX_V6_LPBIG_OFFBIG_LDFLAGS", CONFSTR, _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS },
+ { "POSIX_V6_LPBIG_OFFBIG_LIBS", CONFSTR, _CS_POSIX_V6_LPBIG_OFFBIG_LIBS },
+#endif
+#if defined (_CS_POSIX_V6_LPBIG_OFFBIG_LINTFLAGS)
+ { "POSIX_V6_LPBIG_OFFBIG_LINTFLAGS", CONFSTR, _CS_POSIX_V6_LPBIG_OFFBIG_LINTFLAGS },
+#endif
+
+#if defined (_CS_POSIX_V6_WIDTH_RESTRICTED_ENVS)
+ { "POSIX_6_WIDTH_RESTRICTED_ENVS", CONFSTR, _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS },
+#endif
+
+ /* POSIX.2 Utility Limit Minimum Values */
+#ifdef _POSIX2_BC_BASE_MAX
+ { "POSIX2_BC_BASE_MAX", CONSTANT, _POSIX2_BC_BASE_MAX },
+#else
+ { "POSIX2_BC_BASE_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_BC_DIM_MAX
+ { "POSIX2_BC_DIM_MAX", CONSTANT, _POSIX2_BC_DIM_MAX },
+#else
+ { "POSIX2_BC_DIM_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_BC_SCALE_MAX
+ { "POSIX2_BC_SCALE_MAX", CONSTANT, _POSIX2_BC_SCALE_MAX },
+#else
+ { "POSIX2_BC_SCALE_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_BC_STRING_MAX
+ { "POSIX2_BC_STRING_MAX", CONSTANT, _POSIX2_BC_STRING_MAX },
+#else
+ { "POSIX2_BC_STRING_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_CHARCLASS_NAME_MAX
+ { "POSIX2_CHARCLASS_NAME_MAX", CONSTANT, _POSIX2_CHARCLASS_NAME_MAX },
+#else
+ { "POSIX2_CHARCLASS_NAME_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_COLL_WEIGHTS_MAX
+ { "POSIX2_COLL_WEIGHTS_MAX", CONSTANT, _POSIX2_COLL_WEIGHTS_MAX },
+#else
+ { "POSIX2_COLL_WEIGHTS_MAX", G_UNDEF, -1 },
+#endif
+#if defined (_POSIX2_EQUIV_CLASS_MAX)
+ { "POSIX2_EQUIV_CLASS_MAX", CONSTANT, _POSIX2_EQUIV_CLASS_MAX },
+#endif
+#ifdef _POSIX2_EXPR_NEST_MAX
+ { "POSIX2_EXPR_NEST_MAX", CONSTANT, _POSIX2_EXPR_NEST_MAX },
+#else
+ { "POSIX2_EXPR_NEST_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_LINE_MAX
+ { "POSIX2_LINE_MAX", CONSTANT, _POSIX2_LINE_MAX },
+#else
+ { "POSIX2_LINE_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_RE_DUP_MAX
+ { "POSIX2_RE_DUP_MAX", CONSTANT, _POSIX2_RE_DUP_MAX },
+#else
+ { "POSIX2_RE_DUP_MAX", G_UNDEF, -1 },
+#endif
+#if defined (_POSIX2_VERSION)
+ { "POSIX2_VERSION", CONSTANT, _POSIX2_VERSION },
+#else
+# if !defined (_SC_2_VERSION)
+ { "POSIX2_VERSION", G_UNDEF, -1 },
+# endif
+#endif
+
+#ifdef _POSIX2_BC_BASE_MAX
+ { "_POSIX2_BC_BASE_MAX", CONSTANT, _POSIX2_BC_BASE_MAX },
+#else
+ { "_POSIX2_BC_BASE_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_BC_DIM_MAX
+ { "_POSIX2_BC_DIM_MAX", CONSTANT, _POSIX2_BC_DIM_MAX },
+#else
+ { "_POSIX2_BC_DIM_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_BC_SCALE_MAX
+ { "_POSIX2_BC_SCALE_MAX", CONSTANT, _POSIX2_BC_SCALE_MAX },
+#else
+ { "_POSIX2_BC_SCALE_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_BC_STRING_MAX
+ { "_POSIX2_BC_STRING_MAX", CONSTANT, _POSIX2_BC_STRING_MAX },
+#else
+ { "_POSIX2_BC_STRING_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_CHARCLASS_NAME_MAX
+ { "_POSIX2_CHARCLASS_NAME_MAX", CONSTANT, _POSIX2_CHARCLASS_NAME_MAX },
+#else
+ { "_POSIX2_CHARCLASS_NAME_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_COLL_WEIGHTS_MAX
+ { "_POSIX2_COLL_WEIGHTS_MAX", CONSTANT, _POSIX2_COLL_WEIGHTS_MAX },
+#else
+ { "_POSIX2_COLL_WEIGHTS_MAX", G_UNDEF, -1 },
+#endif
+#if defined (_POSIX2_EQUIV_CLASS_MAX)
+ { "POSIX2_EQUIV_CLASS_MAX", CONSTANT, _POSIX2_EQUIV_CLASS_MAX },
+#endif
+#ifdef _POSIX2_EXPR_NEST_MAX
+ { "_POSIX2_EXPR_NEST_MAX", CONSTANT, _POSIX2_EXPR_NEST_MAX },
+#else
+ { "_POSIX2_EXPR_NEST_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_LINE_MAX
+ { "_POSIX2_LINE_MAX", CONSTANT, _POSIX2_LINE_MAX },
+#else
+ { "_POSIX2_LINE_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX2_RE_DUP_MAX
+ { "_POSIX2_RE_DUP_MAX", CONSTANT, _POSIX2_RE_DUP_MAX },
+#else
+ { "_POSIX2_RE_DUP_MAX", G_UNDEF, -1 },
+#endif
+
+ /* X/OPEN Maxmimum Values */
+#ifdef _XOPEN_IOV_MAX
+ { "_XOPEN_IOV_MAX", CONSTANT, _XOPEN_IOV_MAX },
+#else
+ { "_XOPEN_IOV_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _XOPEN_NAME_MAX
+ { "_XOPEN_NAME_MAX", CONSTANT, _XOPEN_NAME_MAX },
+#else
+ { "_XOPEN_NAME_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _XOPEN_PATH_MAX
+ { "_XOPEN_PATH_MAX", CONSTANT, _XOPEN_PATH_MAX },
+#else
+ { "_XOPEN_PATH_MAX", G_UNDEF, -1 },
+#endif
+
+ /* POSIX.1 Minimum Values */
+#ifdef _POSIX_AIO_LISTIO_MAX
+ { "_POSIX_AIO_LISTIO_MAX", CONSTANT, _POSIX_AIO_LISTIO_MAX },
+#else
+ { "_POSIX_AIO_LISTIO_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_AIO_MAX
+ { "_POSIX_AIO_MAX", CONSTANT, _POSIX_AIO_MAX },
+#else
+ { "_POSIX_AIO_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_ARG_MAX
+ { "_POSIX_ARG_MAX", CONSTANT, _POSIX_ARG_MAX },
+#else
+ { "_POSIX_ARG_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_CHILD_MAX
+ { "_POSIX_CHILD_MAX", CONSTANT, _POSIX_CHILD_MAX },
+#else
+ { "_POSIX_CHILD_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_DELAYTIMER_MAX
+ { "_POSIX_DELAYTIMER_MAX", CONSTANT, _POSIX_DELAYTIMER_MAX },
+#else
+ { "_POSIX_DELAYTIMER_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_HOST_NAME_MAX
+ { "_POSIX_HOST_NAME_MAX", CONSTANT, _POSIX_HOST_NAME_MAX },
+#else
+ { "_POSIX_HOST_NAME_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_LINK_MAX
+ { "_POSIX_LINK_MAX", CONSTANT, _POSIX_LINK_MAX },
+#else
+ { "_POSIX_LINK_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_LOGIN_NAME_MAX
+ { "_POSIX_LOGIN_NAME_MAX", CONSTANT, _POSIX_LOGIN_NAME_MAX },
+#else
+ { "_POSIX_LOGIN_NAME_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_MAX_CANON
+ { "_POSIX_MAX_CANON", CONSTANT, _POSIX_MAX_CANON },
+#else
+ { "_POSIX_MAX_CANON", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_MAX_INPUT
+ { "_POSIX_MAX_INPUT", CONSTANT, _POSIX_MAX_INPUT },
+#else
+ { "_POSIX_MAX_INPUT", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_MQ_OPEN_MAX
+ { "_POSIX_MQ_OPEN_MAX", CONSTANT, _POSIX_MQ_OPEN_MAX },
+#else
+ { "_POSIX_MQ_OPEN_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_MQ_PRIO_MAX
+ { "_POSIX_MQ_PRIO_MAX", CONSTANT, _POSIX_MQ_PRIO_MAX },
+#else
+ { "_POSIX_MQ_PRIO_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_NAME_MAX
+ { "_POSIX_NAME_MAX", CONSTANT, _POSIX_NAME_MAX },
+#else
+ { "_POSIX_NAME_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_NGROUPS_MAX
+ { "_POSIX_NGROUPS_MAX", CONSTANT, _POSIX_NGROUPS_MAX },
+#else
+ { "_POSIX_NGROUPS_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_OPEN_MAX
+ { "_POSIX_OPEN_MAX", CONSTANT, _POSIX_OPEN_MAX },
+#else
+ { "_POSIX_OPEN_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_PATH_MAX
+ { "_POSIX_PATH_MAX", CONSTANT, _POSIX_PATH_MAX },
+#else
+ { "_POSIX_PATH_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_PIPE_BUF
+ { "_POSIX_PIPE_BUF", CONSTANT, _POSIX_PIPE_BUF },
+#else
+ { "_POSIX_PIPE_BUF", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_RE_DUP_MAX
+ { "_POSIX_RE_DUP_MAX", CONSTANT, _POSIX_RE_DUP_MAX },
+#else
+ { "_POSIX_RE_DUP_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_RTSIG_MAX
+ { "_POSIX_RTSIG_MAX", CONSTANT, _POSIX_RTSIG_MAX },
+#else
+ { "_POSIX_RTSIG_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_SEM_NSEMS_MAX
+ { "_POSIX_SEM_NSEMS_MAX", CONSTANT, _POSIX_SEM_NSEMS_MAX },
+#else
+ { "_POSIX_SEM_NSEMS_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_SEM_VALUE_MAX
+ { "_POSIX_SEM_VALUE_MAX", CONSTANT, _POSIX_SEM_VALUE_MAX },
+#else
+ { "_POSIX_SEM_VALUE_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_SIGQUEUE_MAX
+ { "_POSIX_SIGQUEUE_MAX", CONSTANT, _POSIX_SIGQUEUE_MAX },
+#else
+ { "_POSIX_SIGQUEUE_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_SSIZE_MAX
+ { "_POSIX_SSIZE_MAX", CONSTANT, _POSIX_SSIZE_MAX },
+#else
+ { "_POSIX_SSIZE_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_SS_REPL_MAX
+ { "_POSIX_SS_REPL_MAX", CONSTANT, _POSIX_SS_REPL_MAX },
+#else
+ { "_POSIX_SS_REPL_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_STREAM_MAX
+ { "_POSIX_STREAM_MAX", CONSTANT, _POSIX_STREAM_MAX },
+#else
+ { "_POSIX_STREAM_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_SYMLINK_MAX
+ { "_POSIX_SYMLINK_MAX", CONSTANT, _POSIX_SYMLINK_MAX },
+#else
+ { "_POSIX_SYMLINK_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_SYMLOOP_MAX
+ { "_POSIX_SYMLOOP_MAX", CONSTANT, _POSIX_SYMLOOP_MAX },
+#else
+ { "_POSIX_SYMLOOP_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_THREAD_DESTRUCTOR_ITERATIONS
+ { "_POSIX_THREAD_DESTRUCTOR_ITERATIONS", CONSTANT, _POSIX_THREAD_DESTRUCTOR_ITERATIONS },
+#else
+ { "_POSIX_THREAD_DESTRUCTOR_ITERATIONS", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_THREAD_KEYS_MAX
+ { "_POSIX_THREAD_KEYS_MAX", CONSTANT, _POSIX_THREAD_KEYS_MAX },
+#else
+ { "_POSIX_THREAD_KEYS_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_THREAD_THREADS_MAX
+ { "_POSIX_THREAD_THREADS_MAX",CONSTANT, _POSIX_THREAD_THREADS_MAX },
+#else
+ { "_POSIX_THREAD_THREADS_MAX",G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_TIMER_MAX
+ { "_POSIX_TIMER_MAX", CONSTANT, _POSIX_TIMER_MAX },
+#else
+ { "_POSIX_TIMER_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_TRACE_EVENT_NAME_MAX
+ { "_POSIX_TRACE_EVENT_NAME_MAX", CONSTANT, _POSIX_TRACE_EVENT_NAME_MAX },
+#else
+ { "_POSIX_TRACE_EVENT_NAME_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_TRACE_NAME_MAX
+ { "_POSIX_TRACE_NAME_MAX", CONSTANT, _POSIX_TRACE_NAME_MAX },
+#else
+ { "_POSIX_TRACE_NAME_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_TRACE_SYS_MAX
+ { "_POSIX_TRACE_SYS_MAX", CONSTANT, _POSIX_TRACE_SYS_MAX },
+#else
+ { "_POSIX_TRACE_SYS_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_TRACE_USER_EVENT_MAX
+ { "_POSIX_TRACE_USER_EVENT_MAX", CONSTANT, _POSIX_TRACE_USER_EVENT_MAX },
+#else
+ { "_POSIX_TRACE_USER_EVENT_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_TTY_NAME_MAX
+ { "_POSIX_TTY_NAME_MAX", CONSTANT, _POSIX_TTY_NAME_MAX },
+#else
+ { "_POSIX_TTY_NAME_MAX", G_UNDEF, -1 },
+#endif
+#ifdef _POSIX_TZNAME_MAX
+ { "_POSIX_TZNAME_MAX", CONSTANT, _POSIX_TZNAME_MAX },
+#else
+ { "_POSIX_TZNAME_MAX", G_UNDEF, -1 },
+#endif
+
+ /* POSIX.1 Maximum Values */
+#ifdef _POSIX_CLOCKRES_MIN
+ { "_POSIX_CLOCKRES_MIN", CONSTANT, _POSIX_CLOCKRES_MIN },
+#else
+ { "_POSIX_CLOCKRES_MIN", G_UNDEF, -1 },
+#endif
+
+ /* POSIX.1-2001/XPG6 (and later) Runtime Invariants from <limits.h> */
+#ifdef _SC_SS_REPL_MAX
+ { "SS_REPL_MAX", SYSCONF, _SC_SS_REPL_MAX },
+#endif
+#ifdef _SC_TRACE_EVENT_NAME_MAX
+ { "TRACE_EVENT_NAME_MAX", SYSCONF, _SC_TRACE_EVENT_NAME_MAX },
+#endif
+#ifdef _SC_TRACE_NAME_MAX
+ { "TRACE_NAME_MAX", SYSCONF, _SC_TRACE_NAME_MAX },
+#endif
+#ifdef _SC_TRACE_SYS_MAX
+ { "TRACE_SYS_MAX", SYSCONF, _SC_TRACE_SYS_MAX },
+#endif
+#ifdef _SC_TRACE_USER_EVENT_MAX
+ { "TRACE_USER_EVENT_MAX", SYSCONF, _SC_TRACE_USER_EVENT_MAX },
+#endif
+
+ /* POSIX.2/XPG 4.2 (and later) Symbolic Utility Limits */
+#ifdef _SC_BC_BASE_MAX
+ { "BC_BASE_MAX", SYSCONF, _SC_BC_BASE_MAX },
+#endif
+#ifdef _SC_BC_DIM_MAX
+ { "BC_DIM_MAX", SYSCONF, _SC_BC_DIM_MAX },
+#endif
+#ifdef _SC_BC_SCALE_MAX
+ { "BC_SCALE_MAX", SYSCONF, _SC_BC_SCALE_MAX },
+#endif
+#ifdef _SC_BC_STRING_MAX
+ { "BC_STRING_MAX", SYSCONF, _SC_BC_STRING_MAX },
+#endif
+#ifdef CHARCLASS_NAME_MAX
+ { "CHARCLASS_NAME_MAX", CONSTANT, CHARCLASS_NAME_MAX },
+#endif
+#ifdef _SC_COLL_WEIGHTS_MAX
+ { "COLL_WEIGHTS_MAX", SYSCONF, _SC_COLL_WEIGHTS_MAX },
+#endif
+#ifdef _SC_EXPR_NEST_MAX
+ { "EXPR_NEST_MAX", SYSCONF, _SC_EXPR_NEST_MAX },
+#endif
+#ifdef _SC_LINE_MAX
+ { "LINE_MAX", SYSCONF, _SC_LINE_MAX },
+#endif
+# ifdef NL_ARGMAX
+ { "NL_ARGMAX", CONSTANT, NL_ARGMAX },
+#endif
+#ifdef NL_LANGMAX
+ { "NL_LANGMAX", CONSTANT, NL_LANGMAX },
+#endif
+#ifdef NL_MSGMAX
+ { "NL_MSGMAX", CONSTANT, NL_MSGMAX },
+#endif
+#ifdef NL_NMAX
+ { "NL_NMAX", CONSTANT, NL_NMAX },
+#endif
+#ifdef NL_SETMAX
+ { "NL_SETMAX", CONSTANT, NL_SETMAX },
+#endif
+#ifdef NL_TEXTMAX
+ { "NL_TEXTMAX", CONSTANT, NL_TEXTMAX },
+#endif
+#ifdef _SC_RAW_SOCKET
+ { "RAW_SOCKET", SYSCONF, _SC_RAW_SOCKET },
+#endif
+#ifdef _SC_RE_DUP_MAX
+ { "RE_DUP_MAX", SYSCONF, _SC_RE_DUP_MAX },
+#endif
+
+ /* POSIX.2 Optional Facility Configuration Values */
+#ifdef _SC_2_C_BIND
+ { "POSIX2_C_BIND", SYSCONF, _SC_2_C_BIND },
+#else
+ { "POSIX2_C_BIND", G_UNDEF, -1 },
+#endif
+#ifdef _SC_2_C_DEV
+ { "POSIX2_C_DEV", SYSCONF, _SC_2_C_DEV },
+#else
+ { "POSIX2_C_DEV", G_UNDEF, -1 },
+#endif
+#if defined (_SC_2_C_VERSION)
+ { "POSIX2_C_VERSION", SYSCONF, _SC_2_C_VERSION },
+#else
+ { "POSIX2_C_VERSION", G_UNDEF, -1 },
+#endif
+#if defined (_SC_2_CHAR_TERM)
+ { "POSIX2_CHAR_TERM", SYSCONF, _SC_2_CHAR_TERM },
+#else
+ { "POSIX2_CHAR_TERM", G_UNDEF, -1 },
+#endif
+#ifdef _SC_2_FORT_DEV
+ { "POSIX2_FORT_DEV", SYSCONF, _SC_2_FORT_DEV },
+#else
+ { "POSIX2_FORT_DEV", G_UNDEF, -1 },
+#endif
+#ifdef _SC_2_FORT_RUN
+ { "POSIX2_FORT_RUN", SYSCONF, _SC_2_FORT_RUN },
+#else
+ { "POSIX2_FORT_RUN", G_UNDEF, -1 },
+#endif
+#ifdef _SC_2_LOCALEDEF
+ { "POSIX2_LOCALEDEF", SYSCONF, _SC_2_LOCALEDEF },
+#else
+ { "POSIX2_LOCALEDEF", G_UNDEF, -1 },
+#endif
+#ifdef _SC_2_SW_DEV
+ { "POSIX2_SW_DEV", SYSCONF, _SC_2_SW_DEV },
+#else
+ { "POSIX2_SW_DEV", G_UNDEF, -1 },
+#endif
+#if defined (_SC2_UPE)
+ { "POSIX2_UPE", SYSCONF, _SC_2_UPE },
+#else
+ { "POSIX2_UPE", G_UNDEF, -1 },
+#endif
+#if !defined (_POSIX2_VERSION) && defined (_SC_2_VERSION)
+ { "_POSIX2_VERSION", SYSCONF, _SC_2_VERSION },
+#else
+ { "_POSIX2_VERSION", G_UNDEF, -1 },
+#endif
+#if defined (_SC_REGEX_VERSION)
+ { "REGEX_VERSION", SYSCONF, _SC_REGEX_VERSION },
+ { "_REGEX_VERSION", SYSCONF, _SC_REGEX_VERSION },
+#else
+ { "REGEX_VERSION", G_UNDEF, -1 },
+ { "_REGEX_VERSION", G_UNDEF, -1 },
+#endif
+
+#if defined (_SC_2_PBS)
+ { "_POSIX2_PBS", SYSCONF, _SC_2_PBS },
+ { "_POSIX2_PBS_ACCOUNTING", SYSCONF, _SC_2_PBS_ACCOUNTING },
+# if defined (_SC_2_PBS_CHECKPOINT)
+ { "_POSIX2_PBS_CHECKPOINT", SYSCONF, _SC_2_PBS_CHECKPOINT },
+# endif
+ { "_POSIX2_PBS_LOCATE", SYSCONF, _SC_2_PBS_LOCATE },
+ { "_POSIX2_PBS_MESSAGE", SYSCONF, _SC_2_PBS_MESSAGE },
+ { "_POSIX2_PBS_TRACK", SYSCONF, _SC_2_PBS_TRACK },
+#endif
+
+ /* POSIX.1 Configurable System Variables */
+#ifdef _SC_ARG_MAX
+ { "ARG_MAX", SYSCONF, _SC_ARG_MAX },
+#endif
+#ifdef _SC_CHILD_MAX
+ { "CHILD_MAX", SYSCONF, _SC_CHILD_MAX },
+#endif
+#ifdef _SC_CLK_TCK
+ { "CLK_TCK", SYSCONF, _SC_CLK_TCK },
+#endif
+#ifdef _SC_DELAYTIMER_MAX
+ { "DELAYTIMER_MAX", SYSCONF, _SC_DELAYTIMER_MAX },
+#endif
+#ifdef _SC_NGROUPS_MAX
+ { "NGROUPS_MAX", SYSCONF, _SC_NGROUPS_MAX },
+#endif
+#ifdef NZERO
+ { "NZERO", CONSTANT, NZERO },
+#endif
+#ifdef _SC_OPEN_MAX
+ { "OPEN_MAX", SYSCONF, _SC_OPEN_MAX },
+#endif
+#ifdef PASS_MAX
+ { "PASS_MAX", CONSTANT, PASS_MAX },
+#endif
+#ifdef _SC_STREAM_MAX
+ { "STREAM_MAX", SYSCONF, _SC_STREAM_MAX },
+#endif
+#ifdef TMP_MAX
+ { "TMP_MAX", CONSTANT, TMP_MAX },
+#endif
+#ifdef _SC_TZNAME_MAX
+ { "TZNAME_MAX", SYSCONF, _SC_TZNAME_MAX },
+#endif
+
+ /* POSIX.1 Optional Facility Configuration Values */
+#if defined (_SC_ADVISORY_INFO)
+ { "_POSIX_ADVISORY_INFO", SYSCONF, _SC_ADVISORY_INFO },
+#endif
+#if defined (_SC_ASYNCHRONOUS_IO)
+ { "_POSIX_ASYNCHRONOUS_IO", SYSCONF, _SC_ASYNCHRONOUS_IO },
+#endif
+#if defined (_SC_BARRIERS)
+ { "_POSIX_BARRIERS", SYSCONF, _SC_BARRIERS },
+#endif
+#if defined (_SC_BASE)
+ { "_POSIX_BASE", SYSCONF, _SC_BASE },
+#endif
+#if defined (_SC_C_LANG_SUPPORT)
+ { "_POSIX_C_LANG_SUPPORT", SYSCONF, _SC_C_LANG_SUPPORT },
+#endif
+#if defined (_SC_C_LANG_SUPPORT_R)
+ { "_POSIX_C_LANG_SUPPORT_R", SYSCONF, _SC_C_LANG_SUPPORT_R },
+#endif
+#if defined (_SC_CLOCK_SELECTION)
+ { "_POSIX_CLOCK_SELECTION", SYSCONF, _SC_CLOCK_SELECTION },
+#endif
+#if defined (_SC_CPUTIME)
+ { "_POSIX_CPUTIME", SYSCONF, _SC_CPUTIME },
+#endif
+#if defined (_SC_DEVICE_IO)
+ { "_POSIX_DEVICE_IO", SYSCONF, _SC_DEVICE_IO },
+#endif
+#if defined (_SC_DEVICE_SPECIFIC)
+ { "_POSIX_DEVICE_SPECIFIC", SYSCONF, _SC_DEVICE_SPECIFIC },
+#endif
+#if defined (_SC_DEVICE_SPECIFIC_R)
+ { "_POSIX_DEVICE_SPECIFIC_R", SYSCONF, _SC_DEVICE_SPECIFIC_R },
+#endif
+#if defined (_SC_FD_MGMT)
+ { "_POSIX_FD_MGMT", SYSCONF, _SC_FD_MGMT },
+#endif
+#if defined (_SC_FIFO)
+ { "_POSIX_FIFO", SYSCONF, _SC_FIFO },
+#endif
+#if defined (_SC_FILE_ATTRIBUTES)
+ { "_POSIX_FILE_ATTRIBUTES", SYSCONF, _SC_FILE_ATTRIBUTES },
+#endif
+#if defined (_SC_FILE_LOCKING)
+ { "_POSIX_FILE_LOCKING", SYSCONF, _SC_FILE_LOCKING },
+#endif
+#if defined (_SC_FILE_SYSTEM)
+ { "_POSIX_FILE_SYSTEM", SYSCONF, _SC_FILE_SYSTEM },
+#endif
+#if defined (_SC_FSYNC)
+ { "_POSIX_FSYNC", SYSCONF, _SC_FSYNC },
+#endif
+#if defined (_SC_IPV6)
+ { "_POSIX_IPV6", SYSCONF, _SC_IPV6 },
+#endif
+#if defined (_SC_JOB_CONTROL)
+ { "_POSIX_JOB_CONTROL", SYSCONF, _SC_JOB_CONTROL },
+#endif
+#if defined (_SC_MAPPED_FILES)
+ { "_POSIX_MAPPED_FILES", SYSCONF, _SC_MAPPED_FILES },
+#endif
+#if defined (_SC_MEMLOCK)
+ { "_POSIX_MEMLOCK", SYSCONF, _SC_MEMLOCK },
+#endif
+#if defined (_SC_MEMLOCK_RANGE)
+ { "_POSIX_MEMLOCK_RANGE", SYSCONF, _SC_MEMLOCK_RANGE },
+#endif
+#if defined (_SC_MEMORY_PROTECTION)
+ { "_POSIX_MEMORY_PROTECTION", SYSCONF, _SC_MEMORY_PROTECTION },
+#endif
+#if defined (_SC_MESSAGE_PASSING)
+ { "_POSIX_MESSAGE_PASSING", SYSCONF, _SC_MESSAGE_PASSING },
+#endif
+#if defined (_SC_MONOTONIC_CLOCK)
+ { "_POSIX_MONOTONIC_CLOCK", SYSCONF, _SC_MONOTONIC_CLOCK },
+#endif
+#if defined (_SC_MULTI_PROCESS)
+ { "_POSIX_MULTI_PROCESS", SYSCONF, _SC_MULTI_PROCESS },
+#endif
+#if defined (_SC_NETWORKING)
+ { "_POSIX_NETWORKING", SYSCONF, _SC_NETWORKING },
+#endif
+#if defined (_SC_PIPE)
+ { "_POSIX_PIPE", SYSCONF, _SC_PIPE },
+#endif
+#if defined (SC_PRIORITIZED_IO)
+ { "_POSIX_PRIORITIZED_IO", SYSCONF, _SC_PRIORITIZED_IO },
+#endif
+#if defined (_SC_PRIORITY_SCHEDULING)
+ { "_POSIX_PRIORITY_SCHEDULING", SYSCONF, _SC_PRIORITY_SCHEDULING },
+#endif
+#if defined (_SC_READER_WRITER_LOCKS)
+ { "_POSIX_READER_WRITER_LOCKS", SYSCONF, _SC_READER_WRITER_LOCKS },
+#endif
+#if defined (_SC_RAW_SOCKETS)
+ { "_POSIX_RAW_SOCKETS", SYSCONF, _SC_RAW_SOCKETS },
+#endif
+#if defined (_SC_REALTIME_SIGNALS)
+ { "_POSIX_REALTIME_SIGNALS", SYSCONF, _SC_REALTIME_SIGNALS },
+#endif
+#if defined (_SC_REGEXP)
+ { "_POSIX_REGEXP", SYSCONF, _SC_REGEXP },
+#endif
+#if defined (_SC_SAVED_IDS)
+ { "_POSIX_SAVED_IDS", SYSCONF, _SC_SAVED_IDS },
+#endif
+#if defined (_SC_SEMAPHORES)
+ { "_POSIX_SEMAPHORES", SYSCONF, _SC_SEMAPHORES },
+#endif
+#if defined (_SC_SHARED_MEMORY_OBJECTS)
+ { "_POSIX_SHARED_MEMORY_OBJECTS", SYSCONF, _SC_SHARED_MEMORY_OBJECTS },
+#endif
+ { "_POSIX_SHELL", CONSTANT, 1 },
+#if defined (_SC_SIGNALS)
+ { "_POSIX_SIGNALS", SYSCONF, _SC_SIGNALS },
+#endif
+#if defined (_SC_SINGLE_PROCESS)
+ { "_POSIX_SINGLE_PROCESS", SYSCONF, _SC_SINGLE_PROCESS },
+#endif
+#if defined (_SC_SPAWN)
+ { "_POSIX_SPAWN", SYSCONF, _SC_SPAWN },
+#endif
+#if defined (_SC_SPIN_LOCKS)
+ { "_POSIX_SPIN_LOCKS", SYSCONF, _SC_SPIN_LOCKS },
+#endif
+#if defined (_SC_SPORADIC_SERVER)
+ { "_POSIX_SPORADIC_SERVER", SYSCONF, _SC_SPORADIC_SERVER },
+#endif
+#if defined (_SC_SYMLOOP_MAX)
+ { "_POSIX_SYMLOOP_MAX", SYSCONF, _SC_SYMLOOP_MAX },
+#endif
+#if defined (_SC_SYNCHRONIZED_IO)
+ { "_POSIX_SYNCHRONIZED_IO", SYSCONF, _SC_SYNCHRONIZED_IO },
+#endif
+#if defined (_SC_SYSTEM_DATABASE)
+ { "_POSIX_SYSTEM_DATABASE", SYSCONF, _SC_SYSTEM_DATABASE },
+#endif
+#if defined (_SC_SYSTEM_DATABASE_R)
+ { "_POSIX_SYSTEM_DATABASE_R", SYSCONF, _SC_SYSTEM_DATABASE_R },
+#endif
+#if defined (_SC_THREAD_ATTR_STACKADDR)
+ { "_POSIX_THREAD_ATTR_STACKADDR", SYSCONF, _SC_THREAD_ATTR_STACKADDR },
+#endif
+#if defined (_SC_THREAD_ATTR_STACKSIZE)
+ { "_POSIX_THREAD_ATTR_STACKSIZE", SYSCONF, _SC_THREAD_ATTR_STACKSIZE },
+#endif
+#if defined (_SC_THREAD_CPUTIME)
+ { "_POSIX_THREAD_CPUTIME", SYSCONF, _SC_THREAD_CPUTIME },
+#endif
+#if defined (_SC_THREAD_PRIO_INHERIT)
+ { "_POSIX_THREAD_PRIO_INHERIT", SYSCONF, _SC_THREAD_PRIO_INHERIT },
+#endif
+#if defined (_SC_THREAD_PRIO_PROTECT)
+ { "_POSIX_THREAD_PRIO_PROTECT", SYSCONF, _SC_THREAD_PRIO_PROTECT },
+#endif
+#if defined (_SC_THREAD_PRIORITY_SCHEDULING)
+ { "_POSIX_THREAD_PRIORITY_SCHEDULING", SYSCONF, _SC_THREAD_PRIORITY_SCHEDULING },
+#endif
+#if defined (_SC_THREAD_PROCESS_SHARED)
+ { "_POSIX_THREAD_PROCESS_SHARED", SYSCONF, _SC_THREAD_PROCESS_SHARED },
+#endif
+#if defined (_SC_THREAD_SAFE_FUNCTIONS)
+ { "_POSIX_THREAD_SAFE_FUNCTIONS", SYSCONF, _SC_THREAD_SAFE_FUNCTIONS },
+#endif
+#if defined (_SC_THREAD_SPORADIC_SERVER)
+ { "_POSIX_THREAD_SPORADIC_SERVER", SYSCONF, _SC_THREAD_SPORADIC_SERVER },
+#endif
+#if defined (_SC_THREADS)
+ { "_POSIX_THREADS", SYSCONF, _SC_THREADS },
+#endif
+#if defined (_SC_TIMEOUTS)
+ { "_POSIX_TIMEOUTS", SYSCONF, _SC_TIMEOUTS },
+#endif
+#if defined (_SC_TIMERS)
+ { "_POSIX_TIMERS", SYSCONF, _SC_TIMERS },
+#endif
+#if defined (_SC_TRACE)
+ { "_POSIX_TRACE", SYSCONF, _SC_TRACE },
+#endif
+#if defined (_SC_TRACE)
+ { "_POSIX_TRACE_EVENT_FILTER",SYSCONF, _SC_TRACE_EVENT_FILTER },
+#endif
+#if defined (_SC_TRACE)
+ { "_POSIX_TRACE_INHERIT", SYSCONF, _SC_TRACE_INHERIT },
+#endif
+#if defined (_SC_TRACE)
+ { "_POSIX_TRACE_LOG", SYSCONF, _SC_TRACE_LOG },
+#endif
+#if defined (_SC_TYPED_MEMORY_OBJECTS)
+ { "_POSIX_TYPED_MEMORY_OBJECTS", SYSCONF, _SC_TYPED_MEMORY_OBJECTS },
+#endif
+#if defined (_SC_VERSION)
+ { "_POSIX_VERSION", SYSCONF, _SC_VERSION },
+#endif
+
+ /* XPG 4.2 Configurable System Variables. */
+#if defined (_SC_ATEXIT_MAX)
+ { "ATEXIT_MAX", SYSCONF, _SC_ATEXIT_MAX },
+#endif
+#if defined (_SC_GETGR_R_SIZE_MAX)
+ { "GETGR_R_SIZE_MAX", SYSCONF, _SC_GETGR_R_SIZE_MAX },
+#endif
+#if defined (_SC_GETPW_R_SIZE_MAX)
+ { "GETPW_R_SIZE_MAX", SYSCONF, _SC_GETPW_R_SIZE_MAX },
+#endif
+#if defined (_SC_HOST_NAME_MAX)
+ { "HOST_NAME_MAX", SYSCONF, _SC_HOST_NAME_MAX },
+#endif
+#if defined (_SC_IOV_MAX)
+ { "IOV_MAX", SYSCONF, _SC_IOV_MAX },
+#endif
+#if defined (_SC_LOGIN_NAME_MAX)
+ { "LOGIN_NAME_MAX", SYSCONF, _SC_LOGIN_NAME_MAX },
+#endif
+#if defined (_SC_LOGNAME_MAX)
+ { "LOGNAME_MAX", SYSCONF, _SC_LOGNAME_MAX },
+#endif
+#if defined (_SC_PAGESIZE)
+ { "PAGESIZE", SYSCONF, _SC_PAGESIZE },
+#endif
+#if defined (_SC_PAGE_SIZE)
+ { "PAGE_SIZE", SYSCONF, _SC_PAGE_SIZE },
+#endif
+#if defined (_SC_SYMLOOP_MAX)
+ { "SYMLOOP_MAX", SYSCONF, _SC_SYMLOOP_MAX },
+#endif
+#if defined (_SC_TTY_NAME_MAX)
+ { "TTY_NAME_MAX", SYSCONF, _SC_TTY_NAME_MAX },
+#endif
+#if defined (_SC_USER_GROUPS)
+ { "_POSIX_USER_GROUPS", SYSCONF, _SC_USER_GROUPS },
+#endif
+#if defined (_SC_USER_GROUPS_R)
+ { "_POSIX_USER_GROUPS_R", SYSCONF, _SC_USER_GROUPS_R },
+#endif
+
+#if defined (_SC_AIO_LISTIO_MAX)
+ { "AIO_LISTIO_MAX", SYSCONF, _SC_AIO_LISTIO_MAX },
+#endif
+#if defined (_SC_AIO_MAX)
+ { "AIO_MAX", SYSCONF, _SC_AIO_MAX },
+#endif
+#if defined (_SC_AIO_PRIO_DELTA_MAX)
+ { "AIO_PRIO_DELTA_MAX", SYSCONF, _SC_AIO_PRIO_DELTA_MAX },
+#endif
+#if defined (_SC_MQ_OPEN_MAX)
+ { "MQ_OPEN_MAX", SYSCONF, _SC_MQ_OPEN_MAX },
+#endif
+#if defined (_SC_MQ_PRIO_MAX)
+ { "MQ_PRIO_MAX", SYSCONF, _SC_MQ_PRIO_MAX },
+#endif
+#if defined (_SC_RTSIG_MAX)
+ { "RTSIG_MAX", SYSCONF, _SC_RTSIG_MAX },
+#endif
+#if defined (_SC_SEM_NSEMS_MAX)
+ { "SEM_NSEMS_MAX", SYSCONF, _SC_SEM_NSEMS_MAX },
+#endif
+#if defined (_SC_SEM_VALUE_MAX)
+ { "SEM_VALUE_MAX", SYSCONF, _SC_SEM_VALUE_MAX },
+#endif
+#if defined (_SC_SIGQUEUE_MAX)
+ { "SIGQUEUE_MAX", SYSCONF, _SC_SIGQUEUE_MAX },
+#endif
+#if defined (_SC_TIMER_MAX)
+ { "TIMER_MAX", SYSCONF, _SC_TIMER_MAX },
+#endif
+
+#if defined (_SC_THREAD_DESTRUCTOR_ITERATIONS)
+ { "PTHREAD_DESTRUCTOR_ITERATIONS", SYSCONF, _SC_THREAD_DESTRUCTOR_ITERATIONS },
+#endif
+#if defined (_SC_THREAD_KEYS_MAX)
+ { "PTHREAD_KEYS_MAX", SYSCONF, _SC_THREAD_KEYS_MAX },
+#endif
+#if defined (_SC_THREAD_STACK_MIN)
+ { "PTHREAD_STACK_MIN", SYSCONF, _SC_THREAD_STACK_MIN },
+#endif
+#if defined (_SC_THREAD_THREADS_MAX)
+ { "PTHREAD_THREADS_MAX", SYSCONF, _SC_THREAD_THREADS_MAX },
+#endif
+
+ /* XPG 4.2 (and later) Optional Facility Configuration Values */
+#if defined (_SC_XOPEN_CRYPT)
+ { "_XOPEN_CRYPT", SYSCONF, _SC_XOPEN_CRYPT },
+#endif
+#if defined (_SC_XOPEN_ENH_I18N)
+ { "_XOPEN_ENH_I18N", SYSCONF, _SC_XOPEN_ENH_I18N },
+#endif
+#if defined (_SC_XOPEN_LEGACY)
+ { "_XOPEN_LEGACY", SYSCONF, _SC_XOPEN_LEGACY },
+#endif /* _SC_XOPEN_LEGACY */
+#if defined (_SC_XOPEN_REALTIME)
+ { "_XOPEN_REALTIME", SYSCONF, _SC_XOPEN_REALTIME },
+#endif
+#if defined (_SC_XOPEN_REALTIME_THREADS)
+ { "_XOPEN_REALTIME_THREADS", SYSCONF, _SC_XOPEN_REALTIME_THREADS },
+#endif
+#if defined (_SC_XOPEN_SHM)
+ { "_XOPEN_SHM", SYSCONF, _SC_XOPEN_SHM },
+#endif
+#if defined (_SC_XOPEN_STREAMS)
+ { "_XOPEN_STREAMS", SYSCONF, _SC_XOPEN_STREAMS },
+#endif
+#if defined (_SC_XOPEN_UNIX)
+ { "_XOPEN_UNIX", SYSCONF, _SC_XOPEN_UNIX },
+#endif
+#if defined (_SC_XOPEN_VERSION)
+ { "_XOPEN_VERSION", SYSCONF, _SC_XOPEN_VERSION },
+#endif
+#if defined (_SC_XOPEN_XCU_VERSION)
+ { "_XOPEN_XCU_VERSION", SYSCONF, _SC_XOPEN_XCU_VERSION },
+#endif
+#if defined (_SC_XOPEN_XPG2)
+ { "_XOPEN_XPG2", SYSCONF, _SC_XOPEN_XPG2 },
+#endif
+#if defined (_SC_XOPEN_XPG3)
+ { "_XOPEN_XPG3", SYSCONF, _SC_XOPEN_XPG3 },
+#endif
+#if defined (_SC_XOPEN_XPG4)
+ { "_XOPEN_XPG4", SYSCONF, _SC_XOPEN_XPG4 },
+#endif
+#if defined (_SC_XOPEN_XPG5)
+ { "_XOPEN_XPG5", SYSCONF, _SC_XOPEN_XPG5 },
+#endif
+
+ /* POSIX.1 Configurable Pathname Values */
+#ifdef _PC_LINK_MAX
+ { "LINK_MAX", PATHCONF, _PC_LINK_MAX },
+#endif
+#ifdef _PC_MAX_CANON
+ { "MAX_CANON", PATHCONF, _PC_MAX_CANON },
+#endif
+#ifdef _PC_MAX_INPUT
+ { "MAX_INPUT", PATHCONF, _PC_MAX_INPUT },
+#endif
+#ifdef _PC_NAME_MAX
+ { "NAME_MAX", PATHCONF, _PC_NAME_MAX },
+#endif
+#ifdef _PC_PATH_MAX
+ { "PATH_MAX", PATHCONF, _PC_PATH_MAX },
+#endif
+#ifdef _PC_PIPE_BUF
+ { "PIPE_BUF", PATHCONF, _PC_PIPE_BUF },
+#endif
+#ifdef _PC_SYMLINK_MAX
+ { "SYMLINK_MAX", PATHCONF, _PC_SYMLINK_MAX },
+#endif
+#ifdef _PC_CHOWN_RESTRICTED
+ { "_POSIX_CHOWN_RESTRICTED", PATHCONF, _PC_CHOWN_RESTRICTED },
+#endif
+#ifdef _PC_NO_TRUNC
+ { "_POSIX_NO_TRUNC", PATHCONF, _PC_NO_TRUNC },
+#endif
+#ifdef _PC_VDISABLE
+ { "_POSIX_VDISABLE", PATHCONF, _PC_VDISABLE },
+#endif
+
+ /* XPG 4.2 Configurable Pathname Values */
+#if defined (_PC_FILESIZEBITS)
+ { "FILESIZEBITS", PATHCONF, _PC_FILESIZEBITS },
+#endif
+#if defined (_PC_ASYNC_IO)
+ { "_POSIX_ASYNC_IO", PATHCONF, _PC_ASYNC_IO },
+#endif
+#if defined (_PC_PRIO_IO)
+ { "_POSIX_PRIO_IO", PATHCONF, _PC_PRIO_IO },
+#endif
+#if defined (_PC_SYNC_IO)
+ { "_POSIX_SYNC_IO", PATHCONF, _PC_SYNC_IO },
+#endif
+
+ /* POSIX.1-200x configurable pathname values */
+#if defined (_PC_ALLOC_SIZE_MIN)
+ { "POSIX_ALLOC_SIZE_MIN", PATHCONF, _PC_ALLOC_SIZE_MIN },
+ { "POSIX_REC_INCR_XFER_SIZE", PATHCONF, _PC_REC_INCR_XFER_SIZE },
+ { "POSIX_REC_MAX_XFER_SIZE", PATHCONF, _PC_REC_MAX_XFER_SIZE },
+ { "POSIX_REC_MIN_XFER_SIZE", PATHCONF, _PC_REC_MIN_XFER_SIZE },
+ { "POSIX_REC_XFER_ALIGN", PATHCONF, _PC_REC_XFER_ALIGN },
+#endif
+
+ /* ANSI/ISO C, POSIX.1-200x, XPG 4.2 (and later) C language type limits. */
+ { "CHAR_BIT", CONSTANT, CHAR_BIT },
+ { "CHAR_MAX", CONSTANT, CHAR_MAX },
+ { "CHAR_MIN", CONSTANT, CHAR_MIN },
+ { "INT_BIT", CONSTANT, INT_BIT },
+ { "INT_MAX", CONSTANT, INT_MAX },
+ { "INT_MIN", CONSTANT, INT_MIN },
+#ifdef LLONG_MAX
+ { "LLONG_MAX", LLCONST, VAL_LLONG_MAX },
+ { "LLONG_MIN", LLCONST, VAL_LLONG_MIN },
+#endif
+ { "LONG_BIT", CONSTANT, LONG_BIT },
+ { "LONG_MAX", CONSTANT, LONG_MAX },
+ { "LONG_MIN", CONSTANT, LONG_MIN },
+#ifdef MB_LEN_MAX
+ { "MB_LEN_MAX", CONSTANT, MB_LEN_MAX },
+#endif
+ { "SCHAR_MAX", CONSTANT, SCHAR_MAX },
+ { "SCHAR_MIN", CONSTANT, SCHAR_MIN },
+ { "SHRT_MAX", CONSTANT, SHRT_MAX },
+ { "SHRT_MIN", CONSTANT, SHRT_MIN },
+ { "SIZE_MAX", CONSTANT, SIZE_MAX },
+ { "SSIZE_MAX", CONSTANT, SSIZE_MAX },
+ { "UCHAR_MAX", CONSTANT, UCHAR_MAX },
+ { "UINT_MAX", CONSTANT, UINT_MAX },
+#ifdef ULLONG_MAX
+ { "ULLONG_MAX", LLCONST, VAL_ULLONG_MAX },
+#endif
+ { "ULONG_MAX", CONSTANT, ULONG_MAX },
+ { "USHRT_MAX", CONSTANT, USHRT_MAX },
+ { "WORD_BIT", CONSTANT, WORD_BIT },
+
+ { NULL }
+};
+
+static int num_getconf_variables = sizeof(conf_table) / sizeof(struct conf_variable) - 1;
+
+extern char *this_command_name;
+extern char **make_builtin_argv ();
+
+static void getconf_help ();
+static int getconf_print ();
+static int getconf_one ();
+static int getconf_all ();
+
+int
+getconf_builtin (list)
+ WORD_LIST *list;
+{
+ int c, r, opt, aflag;
+ char **v;
+
+ aflag = 0;
+ reset_internal_getopt();
+ while ((opt = internal_getopt (list, "ahv:")) != -1) {
+ switch (opt) {
+ case 'a':
+ aflag = 1;
+ break;
+ case 'h':
+ getconf_help();
+ return(EXECUTION_SUCCESS);
+ case 'v':
+ break; /* ignored */
+ default:
+ builtin_usage();
+ return(EX_USAGE);
+ }
+ }
+
+ list = loptend;
+ if ((aflag == 0 && list == 0) || (aflag && list) || list_length(list) > 2) {
+ builtin_usage();
+ return(EX_USAGE);
+ }
+
+ r = aflag ? getconf_all() : getconf_one(list);
+
+ return r;
+}
+
+static void
+getconf_help()
+{
+ const struct conf_variable *cp;
+ register int i, column;
+
+ builtin_usage();
+ printf("Acceptable variable names are:\n");
+ for (cp = conf_table; cp->name != NULL; cp++) {
+ if (cp->type == PATHCONF)
+ printf("%s pathname\n", cp->name);
+ else
+ printf("%s\n", cp->name);
+ }
+}
+
+static int
+getconf_print(cp, vpath, all)
+struct conf_variable *cp;
+char *vpath;
+int all;
+{
+ long val;
+ char *sval;
+ size_t slen;
+
+ switch (cp->type) {
+ case G_UNDEF:
+ printf("undefined\n");
+ break;
+
+#ifdef LLONG_MAX
+ case LLCONST:
+ switch (cp->value) {
+ default:
+ case VAL_LLONG_MIN:
+ printf ("%lld\n", LLONG_MIN);
+ break;
+ case VAL_LLONG_MAX:
+ printf ("%lld\n", LLONG_MAX);
+ break;
+ case VAL_ULLONG_MAX:
+ printf ("%llu\n", ULLONG_MAX);
+ break;
+ }
+ break;
+#endif
+ case CONSTANT:
+ switch (cp->value) {
+ case UCHAR_MAX:
+ case USHRT_MAX:
+ case UINT_MAX:
+#if (ULONG_MAX != UINT_MAX)
+ case ULONG_MAX:
+#endif
+#if (SIZE_MAX != UINT_MAX) && (SIZE_MAX != ULONG_MAX)
+ case SIZE_MAX:
+#endif
+
+ printf("%lu\n", cp->value);
+ break;
+ default:
+ printf("%ld\n", cp->value);
+ break;
+ }
+ break;
+
+ case CONFSTR:
+ errno = 0;
+ slen = confstr (cp->value, (char *) 0, (size_t) 0);
+ if (slen == 0) {
+ if (errno != 0) {
+ if (all)
+ printf ("getconf: %s\n", strerror(errno));
+ else
+ builtin_error ("%s", strerror(errno));
+ } else
+ printf ("undefined\n");
+ return (EXECUTION_FAILURE);
+ }
+ sval = xmalloc(slen);
+
+ confstr(cp->value, sval, slen);
+ printf("%s\n", sval);
+ free(sval);
+ break;
+
+ case SYSCONF:
+ errno = 0;
+ if ((val = sysconf(cp->value)) == -1) {
+ if (errno != 0) {
+ if (all)
+ printf("getconf: %s\n", strerror (errno));
+ else
+ builtin_error ("%s", strerror (errno));
+ return (EXECUTION_FAILURE);
+ }
+
+ printf ("undefined\n");
+ } else {
+ printf("%ld\n", val);
+ }
+ break;
+
+ case PATHCONF:
+ errno = 0;
+ if ((val = pathconf(vpath, cp->value)) == -1) {
+ if (errno != 0) {
+ if (all)
+ printf("getconf: %s: %s\n", vpath, strerror (errno));
+ else
+ builtin_error ("%s: %s", vpath, strerror (errno));
+ return (EXECUTION_FAILURE);
+ }
+
+ printf ("undefined\n");
+ } else {
+ printf ("%ld\n", val);
+ }
+ break;
+ }
+
+ return (ferror(stdout) ? EXECUTION_FAILURE : EXECUTION_SUCCESS);
+}
+
+static int
+getconf_all()
+{
+ const struct conf_variable *cp;
+ int ret;
+
+ ret = EXECUTION_SUCCESS;
+ for (cp = conf_table; cp->name != NULL; cp++) {
+ printf("%-35s", cp->name);
+ if (getconf_print(cp, "/", 1) == EXECUTION_FAILURE)
+ ret = EXECUTION_FAILURE;
+ }
+ return ret;
+}
+
+static int
+getconf_one(list)
+ WORD_LIST *list;
+{
+ const struct conf_variable *cp;
+ char *vname, *vpath;
+
+ vname = list->word->word;
+ vpath = (list->next && list->next->word) ? list->next->word->word
+ : (char *)NULL;
+
+ for (cp = conf_table; cp->name != NULL; cp++) {
+ if (strcmp(vname, cp->name) == 0)
+ break;
+ }
+ if (cp->name == NULL) {
+ builtin_error ("%s: unknown variable", vname);
+ return (EXECUTION_FAILURE);
+ }
+
+ if (cp->type == PATHCONF) {
+ if (list->next == 0) {
+ builtin_usage();
+ return(EX_USAGE);
+ }
+ } else {
+ if (list->next) {
+ builtin_usage();
+ return(EX_USAGE);
+ }
+ }
+
+ return (getconf_print(cp, vpath, 0));
+}
+
+static char *getconf_doc[] = {
+ "Display values of system limits and options.",
+ "",
+ "getconf writes the current value of a configurable system limit or",
+ "option variable to the standard output.",
+ (char *)NULL
+};
+
+struct builtin getconf_struct = {
+ "getconf",
+ getconf_builtin,
+ BUILTIN_ENABLED,
+ getconf_doc,
+ "getconf -[ah] or getconf [-v spec] sysvar or getconf [-v spec] pathvar pathname",
+ 0
+};
+
+#ifndef HAVE_CONFSTR
+static size_t
+confstr (name, buf, len)
+ int name;
+ char *buf;
+ size_t len;
+{
+ switch (name)
+ {
+ case _CS_PATH:
+ if (len > 0 && buf)
+ {
+ strncpy (buf, STANDARD_UTILS_PATH, len - 1);
+ buf[len - 1] = '\0';
+ }
+ return (sizeof (STANDARD_UTILS_PATH) + 1);
+ default:
+ errno = EINVAL;
+ return 0;
+ }
+}
+#endif
+
+#ifndef HAVE_SYSCONF
+extern long get_clk_tck __P((void));
+
+static long
+sysconf (name)
+ int name;
+{
+# if defined (_POSIX_VERSION)
+ switch (name)
+ {
+ case _SC_ARG_MAX:
+ return _POSIX_ARG_MAX;
+ case _SC_CHILD_MAX:
+ return _POSIX_CHILD_MAX;
+ case _SC_CLK_TCK:
+ return get_clk_tck();
+ case _SC_NGROUPS_MAX:
+ return _POSIX_NGROUPS_MAX;
+ case _SC_OPEN_MAX:
+ return _POSIX_OPEN_MAX;
+ case _SC_JOB_CONTROL:
+ return _POSIX_JOB_CONTROL;
+ case _SC_SAVED_IDS:
+ return _POSIX_SAVED_IDS;
+ case _SC_VERSION:
+ return _POSIX_VERSION;
+ case _SC_BC_BASE_MAX:
+ return _POSIX2_BC_BASE_MAX;
+ case _SC_BC_DIM_MAX:
+ return _POSIX2_BC_DIM_MAX;
+ case _SC_BC_SCALE_MAX:
+ return _POSIX2_BC_SCALE_MAX;
+ case _SC_BC_STRING_MAX:
+ return _POSIX2_BC_STRING_MAX;
+ case _SC_COLL_WEIGHTS_MAX:
+ return -1;
+ case _SC_EXPR_NEST_MAX:
+ return _POSIX2_EXPR_NEST_MAX;
+ case _SC_LINE_MAX:
+ return _POSIX2_LINE_MAX;
+ case _SC_RE_DUP_MAX:
+ return _POSIX2_RE_DUP_MAX;
+ case _SC_STREAM_MAX:
+ return _POSIX_STREAM_MAX;
+ case _SC_TZNAME_MAX:
+ return _POSIX_TZNAME_MAX;
+ default:
+ errno = EINVAL;
+ return -1;
+ }
+#else
+ errno = EINVAL;
+ return -1;
+#endif
+}
+#endif
+
+#ifndef HAVE_PATHCONF
+static long
+pathconf (path, name)
+ const char *path;
+ int name;
+{
+#if defined (_POSIX_VERSION)
+ switch (name)
+ {
+ case _PC_LINK_MAX:
+ return _POSIX_LINK_MAX;
+ case _PC_MAX_CANON:
+ return _POSIX_MAX_CANON;
+ case _PC_MAX_INPUT:
+ return _POSIX_MAX_INPUT;
+ case _PC_NAME_MAX:
+ return _POSIX_NAME_MAX;
+ case _PC_PATH_MAX:
+ return _POSIX_PATH_MAX;
+ case _PC_PIPE_BUF:
+ return _POSIX_PIPE_BUF;
+ case _PC_CHOWN_RESTRICTED:
+#ifdef _POSIX_CHOWN_RESTRICTED
+ return _POSIX_CHOWN_RESTRICTED;
+#else
+ return -1;
+#endif
+ case _PC_NO_TRUNC:
+#ifdef _POSIX_NO_TRUNC
+ return _POSIX_NO_TRUNC;
+#else
+ return -1;
+#endif
+ case _PC_VDISABLE:
+#ifdef _POSIX_VDISABLE
+ return _POSIX_VDISABLE;
+#else
+ return -1;
+#endif
+ default:
+ errno = EINVAL;
+ return -1;
+ }
+#else
+ errno = EINVAL;
+ return -1;
+#endif
+}
+#endif
--- /dev/null
+/* getconf.h -- replacement definitions for ones the system doesn't provide. */
+
+#ifndef _GETCONF_H
+#define _GETCONF_H
+
+/* Some systems do not define these; use POSIX.2 minimum recommended values. */
+#ifndef _POSIX2_COLL_WEIGHTS_MAX
+# define _POSIX2_COLL_WEIGHTS_MAX 2
+#endif
+
+/* If we're on a posix system, but the system doesn't define the necessary
+ constants, use posix.1 minimum values. */
+#if defined (_POSIX_VERSION)
+
+#ifndef _POSIX_ARG_MAX
+# define _POSIX_ARG_MAX 4096
+#endif
+#ifndef _POSIX_CHILD_MAX
+# define _POSIX_CHILD_MAX 6
+#endif
+#ifndef _POSIX_LINK_MAX
+# define _POSIX_LINK_MAX 8
+#endif
+#ifndef _POSIX_MAX_CANON
+# define _POSIX_MAX_CANON 255
+#endif
+#ifndef _POSIX_MAX_INPUT
+# define _POSIX_MAX_INPUT 255
+#endif
+#ifndef _POSIX_NAME_MAX
+# define _POSIX_NAME_MAX 14
+#endif
+#ifndef _POSIX_NGROUPS_MAX
+# define _POSIX_NGROUPS_MAX 0
+#endif
+#ifndef _POSIX_OPEN_MAX
+# define _POSIX_OPEN_MAX 16
+#endif
+#ifndef _POSIX_PATH_MAX
+# define _POSIX_PATH_MAX 255
+#endif
+#ifndef _POSIX_PIPE_BUF
+# define _POSIX_PIPE_BUF 512
+#endif
+#ifndef _POSIX_SSIZE_MAX
+# define _POSIX_SSIZE_MAX 32767
+#endif
+#ifndef _POSIX_STREAM_MAX
+# define _POSIX_STREAM_MAX 8
+#endif
+#ifndef _POSIX_TZNAME_MAX
+# define _POSIX_TZNAME_MAX 3
+#endif
+
+#ifndef _POSIX2_BC_BASE_MAX
+# define _POSIX2_BC_BASE_MAX 99
+#endif
+#ifndef _POSIX2_BC_DIM_MAX
+# define _POSIX2_BC_DIM_MAX 2048
+#endif
+#ifndef _POSIX2_BC_SCALE_MAX
+# define _POSIX2_BC_SCALE_MAX 99
+#endif
+#ifndef _POSIX2_BC_STRING_MAX
+# define _POSIX2_BC_STRING_MAX 1000
+#endif
+#ifndef _POSIX2_EQUIV_CLASS_MAX
+# define _POSIX2_EQUIV_CLASS_MAX 2
+#endif
+#ifndef _POSIX2_EXPR_NEST_MAX
+# define _POSIX2_EXPR_NEST_MAX 32
+#endif
+#ifndef _POSIX2_LINE_MAX
+# define _POSIX2_LINE_MAX 2048
+#endif
+#ifndef _POSIX2_RE_DUP_MAX
+# define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/* configurable system variables */
+#if !defined (HAVE_SYSCONF)
+
+#ifndef _SC_ARG_MAX
+# define _SC_ARG_MAX 1
+# define _SC_CHILD_MAX 2
+# define _SC_CLK_TCK 3
+# define _SC_NGROUPS_MAX 4
+# define _SC_OPEN_MAX 5
+# define _SC_JOB_CONTROL 6
+# define _SC_SAVED_IDS 7
+# define _SC_VERSION 8
+# define _SC_BC_BASE_MAX 9
+# define _SC_BC_DIM_MAX 10
+# define _SC_BC_SCALE_MAX 11
+# define _SC_BC_STRING_MAX 12
+# define _SC_COLL_WEIGHTS_MAX 13
+# define _SC_EXPR_NEST_MAX 14
+# define _SC_LINE_MAX 15
+# define _SC_RE_DUP_MAX 16
+#if 0
+# define _SC_2_VERSION 17
+# define _SC_2_C_BIND 18
+# define _SC_2_C_DEV 19
+# define _SC_2_CHAR_TERM 20
+# define _SC_2_FORT_DEV 21
+# define _SC_2_FORT_RUN 22
+# define _SC_2_LOCALEDEF 23
+# define _SC_2_SW_DEV 24
+# define _SC_2_UPE 25
+#endif /* 0 */
+
+# define _SC_STREAM_MAX 26
+# define _SC_TZNAME_MAX 27
+#endif /* !_SC_ARG_MAX */
+
+#endif /* !HAVE_SYSCONF */
+
+/* configurable pathname variables */
+#if !defined (HAVE_PATHCONF)
+
+#ifndef _PC_LINK_MAX
+#define _PC_LINK_MAX 1
+#define _PC_MAX_CANON 2
+#define _PC_MAX_INPUT 3
+#define _PC_NAME_MAX 4
+#define _PC_PATH_MAX 5
+#define _PC_PIPE_BUF 6
+#define _PC_CHOWN_RESTRICTED 7
+#define _PC_NO_TRUNC 8
+#define _PC_VDISABLE 9
+#endif /* !_PC_LINK_MAX */
+
+#endif /* !HAVE_PATHCONF */
+
+#endif /* _POSIX_VERSION */
+
+#ifndef _CS_PATH
+# define _CS_PATH 1
+#endif
+
+/* ANSI/ISO C, POSIX.1-200x, XPG 4.2 (and later) C language type limits.
+ Defined only if the system include files don't. Assume a 32-bit
+ environment with signed 8-bit characters. */
+
+#ifndef CHAR_BIT
+# define CHAR_BIT 8
+#endif
+#ifndef CHAR_MAX
+# define CHAR_MAX 127
+#endif
+#ifndef CHAR_MIN
+# define CHAR_MIN -128
+#endif
+
+#ifndef INT_BIT
+# define INT_BIT (sizeof (int) * CHAR_BIT)
+#endif
+#ifndef INT_MAX
+# define INT_MAX 2147483647
+#endif
+#ifndef INT_MIN
+# define INT_MIN (-2147483647-1)
+#endif
+
+#ifndef LONG_BIT
+# define LONG_BIT (sizeof (long int) * CHAR_BIT)
+#endif
+#ifndef LONG_MAX
+# define LONG_MAX 2147483647L
+#endif
+#ifndef LONG_MIN
+# define LONG_MIN (-2147483647L-1L)
+#endif
+
+#ifndef SCHAR_MAX
+# define SCHAR_MAX CHAR_MAX
+#endif
+#ifndef SCHAR_MIN
+# define SCHAR_MIN CHAR_MIN
+#endif
+
+#ifndef SHRT_MAX
+# define SHRT_MAX 32767
+#endif
+#ifndef SHRT_MIN
+# define SHRT_MIN (-32768)
+#endif
+
+#ifndef UCHAR_MAX
+# define UCHAR_MAX 255
+#endif
+#ifndef UINT_MAX
+# define UINT_MAX 4294967295U
+#endif
+#ifndef ULONG_MAX
+# define ULONG_MAX 4294967295UL
+#endif
+#ifndef USHRT_MAX
+# define UCHAR_MAX 65535
+#endif
+
+/* assume size_t is `unsigned int'; ssize_t is `int' */
+#ifndef SIZE_MAX
+# define SIZE_MAX UINT_MAX
+#endif
+#ifndef SSIZE_MAX
+# define SSIZE_MAX INT_MAX
+#endif
+
+#ifndef WORD_BIT
+# define WORD_BIT (sizeof (int) * CHAR_BIT)
+#endif
+
+#endif /* _GETCONF_H */
/* See Makefile for compilation details. */
+/*
+ Copyright (C) 1999-2009 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash.
+ 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)
--- /dev/null
+/* Sample builtin to be dynamically loaded with enable -f and create a new
+ builtin. */
+
+/* See Makefile for compilation details. */
+
+#include <config.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#include <stdio.h>
+
+#include "builtins.h"
+#include "shell.h"
+#include "bashgetopt.h"
+
+/* A builtin `xxx' is normally implemented with an `xxx_builtin' function.
+ If you're converting a command that uses the normal Unix argc/argv
+ calling convention, use argv = make_builtin_argv (list, &argc) and call
+ the original `main' something like `xxx_main'. Look at cat.c for an
+ example.
+
+ Builtins should use internal_getopt to parse options. It is the same as
+ getopt(3), but it takes a WORD_LIST *. Look at print.c for an example
+ of its use.
+
+ If the builtin takes no options, call no_options(list) before doing
+ anything else. If it returns a non-zero value, your builtin should
+ immediately return EX_USAGE. Look at logname.c for an example.
+
+ A builtin command returns EXECUTION_SUCCESS for success and
+ EXECUTION_FAILURE to indicate failure. */
+int
+hello_builtin (list)
+ WORD_LIST *list;
+{
+ printf("hello world\n");
+ fflush (stdout);
+ return (EXECUTION_SUCCESS);
+}
+
+/* An array of strings forming the `long' documentation for a builtin xxx,
+ which is printed by `help xxx'. It must end with a NULL. By convention,
+ the first line is a short description. */
+char *hello_doc[] = {
+ "Sample builtin.",
+ "",
+ "this is the long doc for the sample hello builtin",
+ (char *)NULL
+};
+
+/* The standard structure describing a builtin command. bash keeps an array
+ of these structures. The flags must include BUILTIN_ENABLED so the
+ builtin can be used. */
+struct builtin hello_struct = {
+ "hello", /* builtin name */
+ hello_builtin, /* function implementing the builtin */
+ BUILTIN_ENABLED, /* initial flags for builtin */
+ hello_doc, /* array of long documentation strings. */
+ "hello", /* usage synopsis; becomes short_doc */
+ 0 /* reserved for internal use */
+};
+
--- /dev/null
+/*
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if !defined(BUILTIN) && !defined(SHELL)
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1989, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+#endif
+
+#ifndef lint
+static char sccsid[] = "@(#)printf.c 8.1 (Berkeley) 7/20/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+
+#include "bashansi.h"
+#include "shell.h"
+#include "builtins.h"
+#include "stdc.h"
+
+#if !defined (errno)
+extern int errno;
+#endif
+
+static char sbuf[1024];
+static int sblen;
+
+/* Gee, I wish sprintf could be reliably counted upon to return the
+ number of characters written :-( */
+#define PF(f, func) \
+do { \
+ if (fieldwidth) \
+ if (precision) \
+ sprintf(sbuf, f, fieldwidth, precision, func); \
+ else \
+ sprintf(sbuf, f, fieldwidth, func); \
+ else if (precision) \
+ sprintf(sbuf, f, precision, func); \
+ else \
+ sprintf(sbuf, f, func); \
+ spaddstr (sbuf, strlen (sbuf)); \
+} while (0)
+
+static int asciicode __P((void));
+static void escape __P((char *));
+static int getchr __P((void));
+static double getdouble __P((void));
+static int getint __P((int *));
+static int getlong __P((long *));
+static char *getstr __P((void));
+static char *mklong __P((char *, int));
+static void usage __P((void));
+
+static char **gargv;
+
+static char *outstr;
+static int outsize;
+static int outind;
+
+int sprintf_builtin ();
+static int sprintf_main ();
+static void spaddstr ();
+
+extern char *this_command_name;
+extern char *single_quote ();
+extern char **make_builtin_argv ();
+
+static char *sprintf_doc[] = {
+ "Format arguments and assign result to variable.",
+ "",
+ "sprintf formats and outputs its arguments, after the second, under control",
+ "of the format and assigns the result to the variable named by its first",
+ "argument. The format is a character string which contains three types",
+ "of objects: plain characters, which are simply copied to the output string,",
+ "character escape sequences which are converted and copied to the output",
+ "string, and format specifications, each of which causes printing of the",
+ "next successive argument. In addition to the standard sprintf(3) formats,",
+ "%b means to expand escapes in the corresponding argument, and %q means",
+ "to quote the argument in a way that can be reused as shell input. Each",
+ "one of the format specifications must not expand to more than 1024",
+ "characters, though there is no limit on the total size of the output",
+ "string.",
+ (char *)NULL
+};
+
+struct builtin sprintf_struct = {
+ "sprintf",
+ sprintf_builtin,
+ BUILTIN_ENABLED,
+ sprintf_doc,
+ "sprintf var format [arguments]",
+ (char *)0
+};
+
+int
+sprintf_builtin (list)
+ WORD_LIST *list;
+{
+ int c, r;
+ char **v, *varname;
+ WORD_LIST *l;
+ SHELL_VAR *var;
+
+ if (list == 0)
+ {
+ builtin_usage ();
+ return (EXECUTION_FAILURE);
+ }
+
+ varname = list->word->word;
+ list = list->next;
+
+ if (legal_identifier (varname) == 0)
+ {
+ builtin_error ("%s: not a legal variable name", varname);
+ return (EXECUTION_FAILURE);
+ }
+
+ outind = 0;
+ if (outstr == 0)
+ outstr = xmalloc (outsize = 64);
+ outstr[0] = '\0';
+
+ v = make_builtin_argv (list, &c);
+ r = sprintf_main (c, v);
+ free (v);
+
+ var = bind_variable (varname, outstr, 0);
+ if (readonly_p (var))
+ {
+ builtin_error ("%s: readonly variable", varname);
+ return (EXECUTION_FAILURE);
+ }
+
+ return r;
+}
+
+static void
+spaddstr(str, len)
+ char *str;
+ int len;
+{
+ RESIZE_MALLOCED_BUFFER (outstr, outind, len, outsize, 64);
+ strcpy (outstr + outind, str);
+ outind += len;
+}
+
+static int
+sprintf_main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ extern int optind;
+ static char *skip1, *skip2;
+ int ch, end, fieldwidth, precision;
+ char convch, nextch, *format, *fmt, *start;
+
+ while ((ch = getopt(argc, argv, "")) != EOF)
+ switch (ch) {
+ case '?':
+ default:
+ usage();
+ return (1);
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (argc < 1) {
+ usage();
+ return (1);
+ }
+
+ /*
+ * Basic algorithm is to scan the format string for conversion
+ * specifications -- once one is found, find out if the field
+ * width or precision is a '*'; if it is, gather up value. Note,
+ * format strings are reused as necessary to use up the provided
+ * arguments, arguments of zero/null string are provided to use
+ * up the format string.
+ */
+ skip1 = "#-+ 0";
+ skip2 = "*0123456789";
+
+ escape(fmt = format = *argv); /* backslash interpretation */
+ gargv = ++argv;
+ for (;;) {
+ end = 0;
+ /* find next format specification */
+next: for (start = fmt;; ++fmt) {
+ if (!*fmt) {
+ /* avoid infinite loop */
+ if (end == 1) {
+ warnx("missing format character",
+ NULL, NULL);
+ return (1);
+ }
+ end = 1;
+ if (fmt > start)
+ (void)printf("%s", start);
+ if (!*gargv)
+ return (0);
+ fmt = format;
+ goto next;
+ }
+ /* %% prints a % */
+ if (*fmt == '%') {
+ if (*++fmt != '%')
+ break;
+ *fmt++ = '\0';
+ (void)printf("%s", start);
+ goto next;
+ }
+ }
+
+ /* skip to field width */
+ for (; strchr(skip1, *fmt); ++fmt);
+ if (*fmt == '*') {
+ if (getint(&fieldwidth))
+ return (1);
+ } else
+ fieldwidth = 0;
+
+ /* skip to possible '.', get following precision */
+ for (; strchr(skip2, *fmt); ++fmt);
+ if (*fmt == '.')
+ ++fmt;
+ if (*fmt == '*') {
+ if (getint(&precision))
+ return (1);
+ } else
+ precision = 0;
+
+ /* skip to conversion char */
+ for (; strchr(skip2, *fmt); ++fmt);
+ if (!*fmt) {
+ warnx("missing format character", NULL, NULL);
+ return (1);
+ }
+
+ convch = *fmt;
+ nextch = *++fmt;
+ *fmt = '\0';
+ switch(convch) {
+ case 'c': {
+ char p;
+
+ p = getchr();
+ PF(start, p);
+ break;
+ }
+ case 's': {
+ char *p;
+
+ p = getstr();
+ PF(start, p);
+ break;
+ }
+ case 'b': { /* expand escapes in argument */
+ char *p;
+
+ p = getstr();
+ escape(p);
+ PF("%s", p);
+ break;
+ }
+ case 'q': { /* print with shell single quoting */
+ char *p, *p2;
+
+ p = getstr();
+ p2 = single_quote(p);
+ PF("%s", p2);
+ free(p2);
+ break;
+ }
+ case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': {
+ long p;
+ char *f;
+
+ if ((f = mklong(start, convch)) == NULL)
+ return (1);
+ if (getlong(&p))
+ return (1);
+ PF(f, p);
+ break;
+ }
+ case 'e': case 'E': case 'f': case 'g': case 'G': {
+ double p;
+
+ p = getdouble();
+ PF(start, p);
+ break;
+ }
+ default:
+ warnx("illegal format character", NULL, NULL);
+ return (1);
+ }
+ *fmt = nextch;
+ }
+ /* NOTREACHED */
+}
+
+static char *
+mklong(str, ch)
+ char *str;
+ int ch;
+{
+ static char copy[64];
+ int len;
+
+ len = strlen(str) + 2;
+ memmove(copy, str, len - 3);
+ copy[len - 3] = 'l';
+ copy[len - 2] = ch;
+ copy[len - 1] = '\0';
+ return (copy);
+}
+
+static void
+escape(fmt)
+ register char *fmt;
+{
+ register char *store;
+ register int value, c;
+
+ for (store = fmt; c = *fmt; ++fmt, ++store) {
+ if (c != '\\') {
+ *store = c;
+ continue;
+ }
+ switch (*++fmt) {
+ case '\0': /* EOS, user error */
+ *store = '\\';
+ *++store = '\0';
+ return;
+ case '\\': /* backslash */
+ case '\'': /* single quote */
+ *store = *fmt;
+ break;
+ case 'a': /* bell/alert */
+ *store = '\7';
+ break;
+ case 'b': /* backspace */
+ *store = '\b';
+ break;
+ case 'c':
+ return;
+ case 'e':
+ case 'E':
+ *store = '\033';
+ break;
+ case 'f': /* form-feed */
+ *store = '\f';
+ break;
+ case 'n': /* newline */
+ *store = '\n';
+ break;
+ case 'r': /* carriage-return */
+ *store = '\r';
+ break;
+ case 't': /* horizontal tab */
+ *store = '\t';
+ break;
+ case 'v': /* vertical tab */
+ *store = '\13';
+ break;
+ /* octal constant */
+ case '0': case '1': case '2': case '3':
+ case '4': case '5': case '6': case '7':
+ for (c = 3, value = 0;
+ c-- && *fmt >= '0' && *fmt <= '7'; ++fmt) {
+ value <<= 3;
+ value += *fmt - '0';
+ }
+ --fmt;
+ *store = value;
+ break;
+ default:
+ *store = *fmt;
+ break;
+ }
+ }
+ *store = '\0';
+}
+
+static int
+getchr()
+{
+ if (!*gargv)
+ return ('\0');
+ return ((int)**gargv++);
+}
+
+static char *
+getstr()
+{
+ if (!*gargv)
+ return ("");
+ return (*gargv++);
+}
+
+static char *Number = "+-.0123456789";
+static int
+getint(ip)
+ int *ip;
+{
+ long val;
+
+ if (getlong(&val))
+ return (1);
+ if (val > INT_MAX) {
+ warnx("%s: %s", *gargv, strerror(ERANGE));
+ return (1);
+ }
+ *ip = val;
+ return (0);
+}
+
+static int
+getlong(lp)
+ long *lp;
+{
+ long val;
+ char *ep;
+
+ if (!*gargv) {
+ *lp = 0;
+ return (0);
+ }
+ if (strchr(Number, **gargv)) {
+ errno = 0;
+ val = strtol(*gargv, &ep, 0);
+ if (*ep != '\0') {
+ warnx("%s: illegal number", *gargv, NULL);
+ return (1);
+ }
+ if (errno == ERANGE)
+ if (val == LONG_MAX) {
+ warnx("%s: %s", *gargv, strerror(ERANGE));
+ return (1);
+ }
+ if (val == LONG_MIN) {
+ warnx("%s: %s", *gargv, strerror(ERANGE));
+ return (1);
+ }
+
+ *lp = val;
+ ++gargv;
+ return (0);
+ }
+ *lp = (long)asciicode();
+ return (0);
+}
+
+static double
+getdouble()
+{
+ if (!*gargv)
+ return ((double)0);
+ if (strchr(Number, **gargv))
+ return (atof(*gargv++));
+ return ((double)asciicode());
+}
+
+static int
+asciicode()
+{
+ register int ch;
+
+ ch = **gargv;
+ if (ch == '\'' || ch == '"')
+ ch = (*gargv)[1];
+ ++gargv;
+ return (ch);
+}
+
+static void
+usage()
+{
+ (void)fprintf(stderr, "usage: printf format [arg ...]\n");
+}
--- /dev/null
+/*
+ * Originally from
+ * http://www.excessus.demon.co.uk/misc-hacks/index.html#xtitle
+ */
+
+/*
+ * Made into a loadable builtin by chet@po.cwru.edu.
+ */
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <termios.h>
+
+#ifdef BASH_BUILTIN
+#include "shell.h"
+#include "builtins.h"
+#include "bashgetopt.h"
+#endif
+
+#ifdef BASH_BUILTIN
+int xtitle_builtin(WORD_LIST *list)
+#else
+int main(int argc, char *argv[])
+#endif
+{
+ int query = 0;
+ int fd;
+ int openned = 0;
+
+#ifdef BASH_BUILTIN
+ reset_internal_getopt();
+#endif
+ for (;;) {
+#ifdef BASH_BUILTIN
+ int i;
+ i = internal_getopt(list, "q");
+#else
+ int i = getopt(argc, argv, "q");
+#endif
+ if (i < 0)
+ break;
+ switch (i) {
+ case 'q':
+ query = 1;
+ break;
+ default:
+#ifdef BASH_BUILTIN
+ builtin_usage();
+#else
+ fprintf(stderr, "usage: xtitle [-q] [string]\n");
+#endif
+ return (1);
+ }
+ }
+
+#ifdef BASH_BUILTIN
+ if (!query && loptend == 0) {
+#else
+ if (!query && optind == argc) {
+#endif
+ fprintf(stderr, "xtitle: no string to set\n");
+ return (1);
+ }
+
+ {
+ char *t = getenv("TERM");
+ if (!t || strncmp(t, "xterm", 5))
+ return (0);
+ }
+
+ if (isatty(0))
+ fd = 0;
+ else {
+ fd = open("/dev/tty", O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, "xtitle: couldn't open terminal: %s", strerror(errno));
+ return (1);
+ }
+ openned = 1;
+ }
+
+ if (!query) {
+#ifdef BASH_BUILTIN
+ WORD_LIST *l = loptend;
+ char sp = ' ';
+ write(fd, "\33]0;", 4);
+ while (l) {
+ write(fd, l->word->word, strlen(l->word->word));
+ if (l->next)
+ write(fd, &sp, 1);
+ l = l->next;
+ }
+ write(fd, "\33\\", 2);
+#else
+ int i;
+ char sp = ' ';
+ write(fd, "\33]0;", 4);
+ for (i = optind; i < argc; i++) {
+ write(fd, argv[i], strlen(argv[i]));
+ if (i < argc - 1)
+ write(fd, &sp, 1);
+ }
+ write(fd, "\33\\", 2);
+#endif
+ } else {
+ struct termios o, n;
+ char hack;
+ int state = 0;
+
+ tcgetattr(fd, &o);
+ n = o;
+ n.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
+ |INLCR|IGNCR|ICRNL|IXON);
+ n.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
+ n.c_cflag &= ~(CSIZE|PARENB);
+ n.c_cflag |= CS8;
+ tcsetattr(fd, TCSAFLUSH, &n);
+ write(fd, "\33[21t", 5);
+
+ while (state != -1) {
+ if (read(fd, &hack, 1) < 1)
+ break;
+ switch (state) {
+ case 0:
+ if (hack == '\33') state = 1;
+ break;
+ case 1:
+ if (hack == ']') state = 2; else state = 0;
+ break;
+ case 2:
+ if (hack == 'l') state = 3; else state = 0;
+ break;
+ case 3:
+ if (hack == '\33') state = 4; else putchar(hack);
+ break;
+ case 4:
+ if (hack == '\\') { state = -1; putchar('\n'); }
+ else { putchar('\33'); putchar(hack); state = 3; }
+ break;
+ }
+ }
+
+ tcsetattr(fd, TCSAFLUSH, &o);
+ }
+
+ if (openned)
+ close(fd);
+
+ return (0);
+}
+
+
+#ifdef BASH_BUILTIN
+
+static char *xtitle_doc[] = {
+ "Set xterm window title.",
+ "",
+ "Either set or read the title of the current xterm window. With the",
+ "-q option, writes the current xterm title to standard output. Without",
+ "the -q option, sets the xterm title to be the arguments given,",
+ "separated by space characters. [By Mark Wooding, mdw@nsict.org]",
+ 0
+};
+
+struct builtin xtitle_struct = {
+ "xtitle",
+ xtitle_builtin,
+ BUILTIN_ENABLED,
+ xtitle_doc,
+ "xtitle [-q] [arguments]",
+ 0
+};
+
+#endif
--- /dev/null
+#Posted-Date: Fri, 9 Mar 90 18:34:29 EST
+#Date: Fri, 9 Mar 90 18:34:29 EST
+#From: "Eirik Fuller" <wonton.tn.cornell.edu!eirik@ucsbcsl.UUCP>
+#To: bfox@ai.mit.edu (Brian Fox)
+#Subject: Patch to bash 1.05 for SunView
+#
+#I think this works:
+#
+Mu|sun-cmd:am:bs:km:pt:li#34:co#80:cl=^L:ce=\E[K:cd=\E[J:rs=\E[s:
+#
+#Another alternative is to send the ti string at startup time (and, I
+#guess, the te string at exit time); that is how vi works in a cmdtool.
+#The best reason to not do this is that this also disables scrolling
+#which, as I understand it, is why anyone would use cmdtool in the
+#first place. Sending the ti string at startup time would do strange
+#things on other systems too; in xterm it would use the alternate
+#screen.
+#
+#The problem with cmdtool, in case that is less than obvious, is that
+#almost none of the capabilities advertised in /etc/termcap are enabled
+#while scrolling is enabled. It has other problems too, like being
+#part of an outdated proprietary windowing system, but there's probably
+#no need to dwell on that. In a sense, though, the sun-cmd termcap
+#entry doesn't lie about the capabilities; I think the termcap man page
+#does warn about some terminals having cursor motion capabilities only
+#in the "ti/te window".
+#
+#A general solution to this problem would require a termcap capability
+#which somehow tells which features are available outside of the ti/te
+#window. There is no such capability in termcap now, of course.
--- /dev/null
+From mikel@ora.com Tue Aug 1 12:13:20 1995
+Flags: 10
+Return-Path: mikel@ora.com
+Received: from ruby.ora.com (ruby.ora.com [198.112.208.25]) by odin.INS.CWRU.Edu with ESMTP (8.6.12+cwru/CWRU-2.1-ins)
+ id MAA01565; Tue, 1 Aug 1995 12:13:18 -0400 (from mikel@ora.com for <chet@odin.INS.CWRU.Edu>)
+Received: (from fax@localhost) by ruby.ora.com (8.6.12/8.6.11) with UUCP id MAA23251; Tue, 1 Aug 1995 12:07:51 -0400
+Received: by los.ora.com (4.1/Spike-2.1)
+ id AA00672; Tue, 1 Aug 95 08:57:32 EDT
+Date: Tue, 1 Aug 95 08:57:32 EDT
+From: mikel@ora.com (Michael Loukides)
+Message-Id: <9508011257.AA00672@los.ora.com>
+Subject: Re: Ksh debugger from Rosenblatt's book [for bash]
+To: Chet Ramey <chet@odin.INS.CWRU.Edu>
+Cc: cmarie@ora.com, cam@iinet.com.au, brosenblatt@tm.com
+In-Reply-To: Chet Ramey <chet@odin.INS.CWRU.Edu>, Mon, 31 Jul 1995 16:22:48 -0400
+
+ I've modified a (modified) version of Bill Rosenblatt's ksh debugger
+ to work with bash-2.0. Does ORA have any problem with me distributing
+ it with bash-2.0?
+
+That's great!
+
+Go ahead and circulate it; in fact, we should probably grab it and
+stick it in our ftp archive, and put a reference to it in the book.
+(Too late to actually discuss the thing, at least for this edition).
+-------
+
--- /dev/null
+This is a sample implementation of a bash debugger. It is not the same
+as the project available from http://bashdb.sourceforge.net, and has been
+deprecated in favor of that implementation.
--- /dev/null
+#! /bin/bash
+# bashdb - Bash shell debugger
+#
+# Adapted from an idea in O'Reilly's `Learning the Korn Shell'
+# Copyright (C) 1993-1994 O'Reilly and Associates, Inc.
+# Copyright (C) 1998, 1999, 2001 Gary V. Vaughan <gvv@techie.com>>
+#
+# 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 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# NOTE:
+#
+# This program requires bash 2.x.
+# If bash 2.x is installed as "bash2", you can invoke bashdb like this:
+#
+# DEBUG_SHELL=/bin/bash2 /bin/bash2 bashdb script.sh
+
+# TODO:
+#
+# break [regexp]
+# cond [break] [condition]
+# tbreak [regexp|+lines]
+# restart
+# Variable watchpoints
+# Instrument `source' and `.' files in $_potbelliedpig
+# be cleverer about lines we allow breakpoints to be set on
+# break [function_name]
+
+echo 'Bash Debugger version 1.2.4'
+
+export _dbname=${0##*/}
+
+if test $# -lt 1; then
+ echo "$_dbname: Usage: $_dbname filename" >&2
+ exit 1
+fi
+
+_guineapig=$1
+
+if test ! -r $1; then
+ echo "$_dbname: Cannot read file '$_guineapig'." >&2
+ exit 1
+fi
+
+shift
+
+__debug=${TMPDIR-/tmp}/bashdb.$$
+sed -e '/^# bashdb - Bash shell debugger/,/^# -- DO NOT DELETE THIS LINE -- /d' "$0" > $__debug
+cat $_guineapig >> $__debug
+exec ${DEBUG_SHELL-bash} $__debug $_guineapig "$@"
+
+exit 1
+
+# -- DO NOT DELETE THIS LINE -- The program depends on it
+
+#bashdb preamble
+# $1 name of the original guinea pig script
+
+__debug=$0
+_guineapig=$1
+__steptrap_calls=0
+
+shift
+
+shopt -s extglob # turn on extglob so we can parse the debugger funcs
+
+function _steptrap
+{
+ local i=0
+
+ _curline=$1
+
+ if (( ++__steptrap_calls > 1 && $_curline == 1 )); then
+ return
+ fi
+
+ if [ -n "$_disps" ]; then
+ while (( $i < ${#_disps[@]} ))
+ do
+ if [ -n "${_disps[$i]}" ]; then
+ _msg "${_disps[$i]}: \c"
+ eval _msg ${_disps[$i]}
+ fi
+ let i=$i+1
+ done
+ fi
+
+ if (( $_trace )); then
+ _showline $_curline
+ fi
+
+ if (( $_steps >= 0 )); then
+ let _steps="$_steps - 1"
+ fi
+
+ if _at_linenumbp ; then
+ _msg "Reached breakpoint at line $_curline"
+ _showline $_curline
+ _cmdloop
+ elif [ -n "$_brcond" ] && eval $_brcond; then
+ _msg "Break condition $_brcond true at line $_curline"
+ _showline $_curline
+ _cmdloop
+ elif (( $_steps == 0 )); then
+ # Assuming a real script will have the "#! /bin/sh" at line 1,
+ # assume that when $_curline == 1 we are inside backticks.
+ if (( ! $_trace )); then
+ _msg "Stopped at line $_curline"
+ _showline $_curline
+ fi
+ _cmdloop
+ fi
+}
+
+function _setbp
+{
+ local i f line _x
+
+ if [ -z "$1" ]; then
+ _listbp
+ return
+ fi
+
+ eval "$_seteglob"
+
+ if [[ $1 == *(\+)[1-9]*([0-9]) ]]; then
+ case $1 in
+ +*)
+ # normalize argument, then double it (+2 -> +2 + 2 = 4)
+ _x=${1##*([!1-9])} # cut off non-numeric prefix
+ _x=${x%%*([!0-9])} # cut off non-numeric suffix
+ f=$(( $1 + $_x ))
+ ;;
+ *)
+ f=$(( $1 ))
+ ;;
+ esac
+
+ # find the next valid line
+ line="${_lines[$f]}"
+ while _invalidbreakp $f
+ do
+ (( f++ ))
+ line="${_lines[$f]}"
+ done
+
+ if (( $f != $1 ))
+ then
+ _msg "Line $1 is not a valid breakpoint"
+ fi
+
+ if [ -n "${_lines[$f]}" ]; then
+ _linebp[$1]=$1;
+ _msg "Breakpoint set at line $f"
+ else
+ _msg "Breakpoints can only be set on executable lines"
+ fi
+ else
+ _msg "Please specify a numeric line number"
+ fi
+
+ eval "$_resteglob"
+}
+
+function _listbp
+{
+ local i
+
+ if [ -n "$_linebp" ]; then
+ _msg "Breakpoints:"
+ for i in ${_linebp[*]}; do
+ _showline $i
+ done
+ else
+ _msg "No breakpoints have been set"
+ fi
+}
+
+function _clearbp
+{
+ local i
+
+ if [ -z "$1" ]; then
+ read -e -p "Delete all breakpoints? "
+ case $REPLY in
+ [yY]*)
+ unset _linebp[*]
+ _msg "All breakpoints have been cleared"
+ ;;
+ esac
+ return 0
+ fi
+
+ eval "$_seteglob"
+
+ if [[ $1 == [1-9]*([0-9]) ]]; then
+ unset _linebp[$1]
+ _msg "Breakpoint cleared at line $1"
+ else
+ _msg "Please specify a numeric line number"
+ fi
+
+ eval "$_resteglob"
+}
+
+function _setbc
+{
+ if (( $# > 0 )); then
+ _brcond=$@
+ _msg "Break when true: $_brcond"
+ else
+ _brcond=
+ _msg "Break condition cleared"
+ fi
+}
+
+function _setdisp
+{
+ if [ -z "$1" ]; then
+ _listdisp
+ else
+ _disps[${#_disps[@]}]="$1"
+ if (( ${#_disps[@]} < 10 ))
+ then
+ _msg " ${#_disps[@]}: $1"
+ else
+ _msg "${#_disps[@]}: $1"
+ fi
+ fi
+}
+
+function _listdisp
+{
+ local i=0 j
+
+ if [ -n "$_disps" ]; then
+ while (( $i < ${#_disps[@]} ))
+ do
+ let j=$i+1
+ if (( ${#_disps[@]} < 10 ))
+ then
+ _msg " $j: ${_disps[$i]}"
+ else
+ _msg "$j: ${_disps[$i]}"
+ fi
+ let i=$j
+ done
+ else
+ _msg "No displays have been set"
+ fi
+}
+
+function _cleardisp
+{
+ if (( $# < 1 )) ; then
+ read -e -p "Delete all display expressions? "
+ case $REPLY in
+ [Yy]*)
+ unset _disps[*]
+ _msg "All breakpoints have been cleared"
+ ;;
+ esac
+ return 0
+ fi
+
+ eval "$_seteglob"
+
+ if [[ $1 == [1-9]*([0-9]) ]]; then
+ unset _disps[$1]
+ _msg "Display $i has been cleared"
+ else
+ _listdisp
+ _msg "Please specify a numeric display number"
+ fi
+
+ eval "$_resteglob"
+}
+
+# usage _ftrace -u funcname [funcname...]
+function _ftrace
+{
+ local _opt=-t _tmsg="enabled" _func
+ if [[ $1 == -u ]]; then
+ _opt=+t
+ _tmsg="disabled"
+ shift
+ fi
+ for _func; do
+ declare -f $_opt $_func
+ _msg "Tracing $_tmsg for function $_func"
+ done
+}
+
+function _cmdloop
+{
+ local cmd args
+
+ while read -e -p "bashdb> " cmd args; do
+ test -n "$cmd" && history -s "$cmd $args" # save on history list
+ test -n "$cmd" || { set $_lastcmd; cmd=$1; shift; args=$*; }
+ if [ -n "$cmd" ]
+ then
+ case $cmd in
+ b|br|bre|brea|break)
+ _setbp $args
+ _lastcmd="break $args"
+ ;;
+ co|con)
+ _msg "ambiguous command: '$cmd', condition, continue?"
+ ;;
+ cond|condi|condit|conditi|conditio|condition)
+ _setbc $args
+ _lastcmd="condition $args"
+ ;;
+ c|cont|conti|contin|continu|continue)
+ _lastcmd="continue"
+ return
+ ;;
+ d)
+ _msg "ambiguous command: '$cmd', delete, display?"
+ ;;
+ de|del|dele|delet|delete)
+ _clearbp $args
+ _lastcmd="delete $args"
+ ;;
+ di|dis|disp|displ|displa|display)
+ _setdisp $args
+ _lastcmd="display $args"
+ ;;
+ f|ft|ftr|ftra|ftrace)
+ _ftrace $args
+ _lastcmd="ftrace $args"
+ ;;
+ \?|h|he|hel|help)
+ _menu
+ _lastcmd="help"
+ ;;
+ l|li|lis|list)
+ _displayscript $args
+ # _lastcmd is set in the _displayscript function
+ ;;
+ p|pr|pri|prin|print)
+ _examine $args
+ _lastcmd="print $args"
+ ;;
+ q|qu|qui|quit)
+ exit
+ ;;
+ s|st|ste|step|n|ne|nex|next)
+ let _steps=${args:-1}
+ _lastcmd="next $args"
+ return
+ ;;
+ t|tr|tra|trac|trace)
+ _xtrace
+ ;;
+ u|un|und|undi|undis|undisp|undispl|undispla|undisplay)
+ _cleardisp $args
+ _lastcmd="undisplay $args"
+ ;;
+ !*)
+ eval ${cmd#!} $args
+ _lastcmd="$cmd $args"
+ ;;
+ *)
+ _msg "Invalid command: '$cmd'"
+ ;;
+ esac
+ fi
+ done
+}
+
+function _at_linenumbp
+{
+ [[ -n ${_linebp[$_curline]} ]]
+}
+
+function _invalidbreakp
+{
+ local line=${_lines[$1]}
+
+ # XXX - should use shell patterns
+ if test -z "$line" \
+ || expr "$line" : '[ \t]*#.*' > /dev/null \
+ || expr "$line" : '[ \t]*;;[ \t]*$' > /dev/null \
+ || expr "$line" : '[ \t]*[^)]*)[ \t]*$' > /dev/null \
+ || expr "$line" : '[ \t]*;;[ \t]*#.**$' > /dev/null \
+ || expr "$line" : '[ \t]*[^)]*)[ \t]*;;[ \t]*$' > /dev/null \
+ || expr "$line" : '[ \t]*[^)]*)[ \t]*;;*[ \t]*#.*$' > /dev/null
+ then
+ return 0
+ fi
+
+ return 1
+}
+
+function _examine
+{
+ if [ -n "$*" ]; then
+ _msg "$args: \c"
+ eval _msg $args
+ else
+ _msg "Nothing to print"
+ fi
+}
+
+function _displayscript
+{
+ local i j start end bp cl
+
+ if (( $# == 1 )); then # list 5 lines on either side of $1
+ if [ $1 = "%" ]; then
+ let start=1
+ let end=${#_lines[@]}
+ else
+ let start=$1-5
+ let end=$1+5
+ fi
+ elif (( $# > 1 )); then # list between start and end
+ if [ $1 = "^" ]; then
+ let start=1
+ else
+ let start=$1
+ fi
+
+ if [ $2 = "\$" ]; then
+ let end=${#_lines[@]}
+ else
+ let end=$2
+ fi
+ else # list 5 lines on either side of current line
+ let start=$_curline-5
+ let end=$_curline+5
+ fi
+
+ # normalize start and end
+ if (( $start < 1 )); then
+ start=1
+ fi
+ if (( $end > ${#_lines[@]} )); then
+ end=${#_lines[@]}
+ fi
+
+ cl=$(( $end - $start ))
+ if (( $cl > ${LINES-24} )); then
+ pager=${PAGER-more}
+ else
+ pager=cat
+ fi
+
+ i=$start
+ ( while (( $i <= $end )); do
+ _showline $i
+ let i=$i+1
+ done ) 2>&1 | $pager
+
+ # calculate the next block of lines
+ start=$(( $end + 1 ))
+ end=$(( $start + 11 ))
+ if (( $end > ${#_lines[@]} ))
+ then
+ end=${#_lines[@]}
+ fi
+
+ _lastcmd="list $start $end"
+}
+
+function _xtrace
+{
+ let _trace="! $_trace"
+ if (( $_trace )); then
+ _msg "Execution trace on"
+ else
+ _msg "Execution trace off"
+ fi
+}
+
+function _msg
+{
+ echo -e "$@" >&2
+}
+
+function _showline
+{
+ local i=0 bp=' ' line=$1 cl=' '
+
+ if [[ -n ${_linebp[$line]} ]]; then
+ bp='*'
+ fi
+
+ if (( $_curline == $line )); then
+ cl=">"
+ fi
+
+ if (( $line < 100 )); then
+ _msg "${_guineapig/*\//}:$line $bp $cl${_lines[$line]}"
+ elif (( $line < 10 )); then
+ _msg "${_guineapig/*\//}:$line $bp $cl${_lines[$line]}"
+ elif (( $line > 0 )); then
+ _msg "${_guineapig/*\//}:$line $bp $cl${_lines[$line]}"
+ fi
+}
+
+function _cleanup
+{
+ rm -f $__debug $_potbelliedpig 2> /dev/null
+}
+
+function _menu
+{
+ _msg 'bashdb commands:
+ break N set breakpoint at line N
+ break list breakpoints & break condition
+ condition foo set break condition to foo
+ condition clear break condition
+ delete N clear breakpoint at line N
+ delete clear all breakpoints
+ display EXP evaluate and display EXP for each debug step
+ display show a list of display expressions
+ undisplay N remove display expression N
+ list N M display all lines of script between N and M
+ list N display 5 lines of script either side of line N
+ list display 5 lines if script either side of current line
+ continue continue execution upto next breakpoint
+ next [N] execute [N] statements (default 1)
+ print expr prints the value of an expression
+ trace toggle execution trace on/off
+ ftrace [-u] func make the debugger step into function FUNC
+ (-u turns off tracing FUNC)
+ help print this menu
+ ! string passes string to a shell
+ quit quit'
+}
+
+shopt -u extglob
+
+HISTFILE=~/.bashdb_history
+set -o history
+set +H
+
+# strings to save and restore the setting of `extglob' in debugger functions
+# that need it
+_seteglob='local __eopt=-u ; shopt -q extglob && __eopt=-s ; shopt -s extglob'
+_resteglob='shopt $__eopt extglob'
+
+_linebp=()
+let _trace=0
+let _i=1
+
+# Be careful about quoted newlines
+_potbelliedpig=${TMPDIR-/tmp}/${_guineapig/*\//}.$$
+sed 's,\\$,\\\\,' $_guineapig > $_potbelliedpig
+
+_msg "Reading source from file: $_guineapig"
+while read; do
+ _lines[$_i]=$REPLY
+ let _i=$_i+1
+done < $_potbelliedpig
+
+trap _cleanup EXIT
+# Assuming a real script will have the "#! /bin/sh" at line 1,
+# don't stop at line 1 on the first run
+let _steps=1
+LINENO=-1
+trap '_steptrap $LINENO' DEBUG
--- /dev/null
+;;; bashdb.el --- Grand Unified Debugger mode for running bashdb
+;; Copyright (C) 2000, 2001 Masatake YAMATO
+
+;; Author: Masatake YAMATO <jet@gyve.org>
+
+;; 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 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program; if not, write to the Free Software Foundation,
+;; Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+;; Commentary:
+;; This program may run on Emacs 21.0.91 and XEmacs 21.1.
+;;
+;; Put
+;; (autoload 'bashdb "bashdb" "Run bashdb" t nil)
+;; to your .emacs.
+;; M-x bashdb
+;; Run bashdb (like this): bashdb target.sh
+;;
+;; About bashdb:
+;; You can get bashdb from
+;; http://www.oranda.demon.co.uk/development.html
+;;
+;; bashdb.el is based on perldb in gud.el in XEmacs 21.1.
+
+;; Revision:
+;; $Revision: 1.6 $
+;; $Log: bashdb.el,v $
+;; Revision 1.6 2001/01/06 12:18:06 masata-y
+;; Write note about XEmacs.
+;;
+;;
+
+
+;;; Code:
+(require 'gud)
+
+;; User customizable variable
+(defcustom gud-bashdb-command-name "bashdb"
+ "File name for executing Bashdb."
+ :type 'string
+ :group 'gud)
+
+;; History of argument lists passed to bashdb.
+(defvar gud-bashdb-history nil)
+
+(defun gud-bashdb-massage-args (file args)
+ (if xemacsp
+ (cons (file-name-nondirectory file) args)
+ args))
+
+;; There's no guarantee that Emacs will hand the filter the entire
+;; marker at once; it could be broken up across several strings. We
+;; might even receive a big chunk with several markers in it. If we
+;; receive a chunk of text which looks like it might contain the
+;; beginning of a marker, we save it here between calls to the
+;; filter.
+(if xemacsp
+ (defvar gud-bashdb-marker-acc ""))
+(defun gud-bashdb-marker-acc ()
+ (if xemacsp
+ gud-bashdb-marker-acc
+ gud-marker-acc))
+(defun gud-bashdb-marker-acc-quote ()
+ (if xemacsp
+ 'gud-bashdb-marker-acc
+ 'gud-marker-acc))
+
+(defun gud-bashdb-marker-filter (string)
+ (save-match-data
+ (set (gud-bashdb-marker-acc-quote)
+ (concat (gud-bashdb-marker-acc) string))
+ (let ((output ""))
+ ;; Process all the complete markers in this chunk.
+ (while (string-match "^\\([^:\n]+\\):\\([0-9]+\\)[ *]*>.*\n"
+ (gud-bashdb-marker-acc))
+ (setq
+ ;; Extract the frame position from the marker.
+ gud-last-frame (cons
+ (substring (gud-bashdb-marker-acc)
+ (match-beginning 1)
+ (match-end 1))
+ (string-to-int
+ (substring (gud-bashdb-marker-acc)
+ (match-beginning 2)
+ (match-end 2))))
+ ;; Append any text before the marker to the output we're going
+ ;; to return - we don't include the marker in this text.
+ output (concat output
+ (substring (gud-bashdb-marker-acc) 0 (match-beginning 0))))
+ ;; Set the accumulator to the remaining text.
+ (set
+ (gud-bashdb-marker-acc-quote) (substring
+ (gud-bashdb-marker-acc) (match-end 0))))
+
+ ;; Does the remaining text look like it might end with the
+ ;; beginning of another marker? If it does, then keep it in
+ ;; (gud-bashdb-marker-acc) until we receive the rest of it. Since we
+ ;; know the full marker regexp above failed, it's pretty simple to
+ ;; test for marker starts.
+ (if (string-match "^\\([^:\n]+\\):\\([0-9]+\\)[ *]*>" (gud-bashdb-marker-acc))
+ (progn
+ ;; Everything before the potential marker start can be output.
+ (setq output (concat output (substring (gud-bashdb-marker-acc)
+ 0 (match-beginning 0))))
+ ;; Everything after, we save, to combine with later input.
+ (set (gud-bashdb-marker-acc-quote)
+ (substring (gud-bashdb-marker-acc) (match-beginning 0))))
+
+ (setq output (concat output (gud-bashdb-marker-acc)))
+ (set (gud-bashdb-marker-acc-quote) ""))
+
+ output)))
+
+(defun gud-bashdb-find-file (f)
+ (find-file-noselect f))
+
+;;;###autoload
+(defun bashdb (command-line)
+ "Run bashdb on program FILE in buffer *gud-FILE*.
+The directory containing FILE becomes the initial working directory
+and source-file directory for your debugger."
+ (interactive
+ (if xemacsp
+ (list (read-from-minibuffer "Run bashdb (like this): "
+ (if (consp gud-bashdb-history)
+ (car gud-bashdb-history)
+ (format "%s " gud-bashdb-command-name))
+ nil nil
+ '(gud-bashdb-history . 1)))
+ (list (gud-query-cmdline 'bashdb))
+ ))
+
+ (if xemacsp
+ (progn
+ (gud-overload-functions '((gud-massage-args . gud-bashdb-massage-args)
+ (gud-marker-filter . gud-bashdb-marker-filter)
+ (gud-find-file . gud-bashdb-find-file)))
+ (gud-common-init command-line gud-bashdb-command-name))
+ (gud-common-init command-line 'gud-bashdb-massage-args
+ 'gud-bashdb-marker-filter 'gud-bashdb-find-file)
+ (set (make-local-variable 'gud-minor-mode) 'bashdb))
+
+;; Unsupported commands
+;; condition foo set break condition to foo
+;; condition clear break condition
+;; display EXP evaluate and display EXP for each debug step
+;; display show a list of display expressions
+;; undisplay N remove display expression N
+;; ! string passes string to a shell
+;; quit quit
+
+ (gud-def gud-break "break %l" "\C-b" "Set breakpoint at current line.")
+ (gud-def gud-list-break "break" "b" "List breakpoints & break condition.")
+ (gud-def gud-remove "delete %l" "\C-d" "Remove breakpoint at current line")
+ (gud-def gud-remove-all "delete" "d" "Clear all breakpoints")
+ (gud-def gud-cont "continue" "\C-r" "Continue with display.")
+ (gud-def gud-next "next" "\C-n" "Step one line (skip functions).")
+ (gud-def gud-print "print %e" "\C-p" "Evaluate bash expression at point.")
+ (gud-def gud-help "help" "h" "Show all commands.")
+ (gud-def gud-trace "trace" "t" "Toggle execution trace on/off")
+
+ (setq comint-prompt-regexp "^bashdb> ")
+ (setq paragraph-start comint-prompt-regexp)
+ (run-hooks 'bashdb-mode-hook))
+
+(provide 'bashdb)
+;; bashdb.el ends here
--- /dev/null
+#! /bin/bash
+# bashdb - Bash shell debugger
+#
+# Adapted from an idea in O'Reilly's `Learning the Korn Shell'
+# Copyright (C) 1993-1994 O'Reilly and Associates, Inc.
+# Copyright (C) 1998, 1999, 2001 Gary V. Vaughan <gvv@techie.com>>
+#
+# 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 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# NOTE:
+#
+# This program requires bash 2.x.
+# If bash 2.x is installed as "bash2", you can invoke bashdb like this:
+#
+# DEBUG_SHELL=/bin/bash2 /bin/bash2 bashdb script.sh
+
+# TODO:
+#
+# break [regexp]
+# cond [break] [condition]
+# tbreak [regexp|+lines]
+# restart
+# Variable watchpoints
+# Output colourization
+# History with csh ^ substitution? Or write a readline frontend?
+# Instrument shell functions with the _steptrap in $_potbelliedpig
+# Instrument `source' and `.' files in $_potbelliedpig
+# be cleverer about lines we allow breakpoints to be set on
+# break [function_name]
+
+
+echo 'Bash Debugger version 1.2.4'
+
+export _dbname=$(echo "X$0"|sed -e 's,^X,,' -e 's,^.*/,,')
+
+if test $# -lt 1; then
+ echo "$_dbname: Usage: $_dbname <filename>" >&2
+ exit 1
+fi
+
+_guineapig=$1
+
+if test ! -r $1; then
+ echo "$_dbname: Cannot read file '$_guineapig'." >&2
+ exit 1
+fi
+
+shift
+
+__debug=${TMPDIR-/tmp}/bashdb.$$
+sed -e '/^# bashdb - Bash shell debugger/,/^# -- DO NOT DELETE THIS LINE -- /d' "$0" > $__debug
+cat $_guineapig >> $__debug
+exec ${DEBUG_SHELL-bash} $__debug $_guineapig "$@"
+
+exit 1
+
+# -- DO NOT DELETE THIS LINE -- The program depends on it
+
+#bashdb preamble
+# $1 name of the original guinea pig script
+
+__debug=$0
+_guineapig=$1
+
+shift
+
+function _steptrap
+{
+ local i=0
+
+ _curline=$1
+
+ if [ -n "$_disps" ]
+ then
+ while (( $i < ${#_disps[@]} ))
+ do
+ if [ -n "${_disps[$i]}" ]
+ then
+ _msg "${_disps[$i]}: \c"
+ eval _msg ${_disps[$i]}
+ fi
+ let i=$i+1
+ done
+ fi
+
+ if (( $_trace )); then
+ _showline $_curline
+ fi
+
+ if (( $_steps >= 0 )); then
+ let _steps="$_steps - 1"
+ fi
+
+ if _at_linenumbp ; then
+ _msg "Reached breakpoint at line $_curline"
+ _showline $_curline
+ _cmdloop
+ elif [ -n "$_brcond" ] && eval $_brcond; then
+ _msg "Break condition $_brcond true at line $_curline"
+ _showline $_curline
+ _cmdloop
+ elif (( $_steps == 0 && $_curline > 1)); then
+ # Assuming a real script will have the "#! /bin/sh" at line 1,
+ # assume that when $_curline == 1 we are inside backticks.
+ if (( ! $_trace )); then
+ _msg "Stopped at line $_curline"
+ _showline $_curline
+ fi
+ _cmdloop
+ fi
+}
+
+function _setbp
+{
+ local i f line
+
+ if [ -z "$1" ]
+ then
+ _listbp
+ elif [ $(echo $1 | grep '^\+*[1-9][0-9]*') ]
+ then
+ case $1 in
+ +*)
+ let f="$1 + `expr $1 : '+*\([1-9][0-9]*\)'`"
+ ;;
+ *)
+ let f=$1
+ ;;
+ esac
+
+ # find the next valid line
+ line="${_lines[$f]}"
+ while _invalidbreakp $f
+ do
+ let f="$f + 1"
+ line="${_lines[$f]}"
+ done
+
+ if (( $f != $1 ))
+ then
+ _msg "Line $1 is not a valid breakpoint"
+ fi
+
+ if [ -n "${_lines[$f]}" ]
+ then
+ _linebp=($(echo $( (for i in ${_linebp[*]} $1; do
+ echo $i; done) | sort -n) ))
+ _msg "Breakpoint set at line $f"
+ else
+ _msg "Breakpoints can only be set on executable lines"
+ fi
+ else
+ _msg "Please specify a numeric line number"
+ fi
+}
+
+function _listbp
+{
+ local i
+
+ if [ -n "$_linebp" ]
+ then
+ _msg "Breakpoints:"
+ for i in ${_linebp[*]}; do
+ _showline $i
+ done
+ else
+ _msg "No breakpoints have been set"
+ fi
+}
+
+function _clearbp
+{
+ local i
+ if [ -z "$1" ]; then
+ read -e -p "Delete all breakpoints? "
+ case $REPLY in
+ y*)
+ unset _linebp[*]
+ _msg "All breakpoints have been cleared"
+ ;;
+ esac
+ elif [ $(echo $1 | grep '^[0-9]*') ]; then
+ _linebp=($(echo $(for i in ${_linebp[*]}; do
+ if (( $1 != $i )); then echo $1; fi; done) ))
+ _msg "Breakpoint cleared at line $1"
+ else
+ _msg "Please specify a numeric line number"
+ fi
+}
+
+function _setbc
+{
+ if [ -n "$*" ]
+ then
+ _brcond=$args
+ _msg "Break when true: $_brcond"
+ else
+ _brcond=
+ _msg "Break condition cleared"
+ fi
+}
+
+function _setdisp
+{
+ if [ -z "$1" ]
+ then
+ _listdisp
+ else
+ _disps[${#_disps[@]}]="$1"
+ if (( ${#_disps[@]} < 10 ))
+ then
+ _msg " ${#_disps[@]}: $1"
+ else
+ _msg "${#_disps[@]}: $1"
+ fi
+ fi
+}
+
+function _listdisp
+{
+ local i=0 j
+
+ if [ -n "$_disps" ]
+ then
+ while (( $i < ${#_disps[@]} ))
+ do
+ let j=$i+1
+ if (( ${#_disps[@]} < 10 ))
+ then
+ _msg " $j: ${_disps[$i]}"
+ else
+ _msg "$j: ${_disps[$i]}"
+ fi
+ let i=$j
+ done
+ else
+ _msg "No displays have been set"
+ fi
+}
+
+function _cleardisp
+{
+ if (( $# < 1 ))
+ then
+ read -e -p "Delete all display expressions? "
+ case $REPLY in
+ y*)
+ unset _disps[*]
+ _msg "All breakpoints have been cleared"
+ ;;
+ esac
+ elif [ $(echo $1 | grep '^[0-9]*') ]
+ then
+ unset _disps[$1]
+ _msg "Display $i has been cleared"
+ else
+ _listdisp
+ _msg "Please specify a numeric display number"
+ fi
+}
+
+function _cmdloop
+{
+ local cmd args
+
+ while read -e -p "bashdb> " cmd args; do
+ test -n "$cmd" || { set $_lastcmd; cmd=$1; shift; args=$*; }
+ if [ -n "$cmd" ]
+ then
+ case $cmd in
+ b|br|bre|brea|break)
+ _setbp $args
+ _lastcmd="break $args"
+ ;;
+ co|con)
+ _msg "ambiguous command: '$cmd', condition, continue?"
+ ;;
+ cond|condi|condit|conditi|conditio|condition)
+ _setbc $args
+ _lastcmd="condition $args"
+ ;;
+ c|cont|conti|contin|continu|continue)
+ _lastcmd="continue"
+ return
+ ;;
+ d)
+ _msg "ambiguous command: '$cmd', delete, display?"
+ ;;
+ de|del|dele|delet|delete)
+ _clearbp $args
+ _lastcmd="delete $args"
+ ;;
+ di|dis|disp|displ|displa|display)
+ _setdisp $args
+ _lastcmd="display $args"
+ ;;
+ \?|h|he|hel|help)
+ _menu
+ _lastcmd="help"
+ ;;
+ l|li|lis|list)
+ _displayscript $args
+ # _lastcmd is set in the _displayscript function
+ ;;
+ p|pr|pri|prin|print)
+ _examine $args
+ _lastcmd="print $args"
+ ;;
+ q|qu|qui|quit)
+ exit
+ ;;
+ s|st|ste|step|n|ne|nex|next)
+ let _steps=${args:-1}
+ _lastcmd="next $args"
+ return
+ ;;
+ t|tr|tra|trac|trace)
+ _xtrace
+ ;;
+ u|un|und|undi|undis|undisp|undispl|undispla|undisplay)
+ _cleardisp $args
+ _lastcmd="undisplay $args"
+ ;;
+ !*)
+ eval ${cmd#!} $args
+ _lastcmd="$cmd $args"
+ ;;
+ *)
+ _msg "Invalid command: '$cmd'"
+ ;;
+ esac
+ fi
+ done
+}
+
+function _at_linenumbp
+{
+ local i=0
+
+ if [ "$_linebp" ]
+ then
+ while (( $i < ${#_linebp[@]} )); do
+ if (( ${_linebp[$i]} == $_curline )); then
+ return 0
+ fi
+ let i=$i+1
+ done
+ fi
+
+ return 1
+}
+
+function _invalidbreakp
+{
+ local line=${_lines[$1]}
+
+ if test -z "$line" \
+ || expr "$line" : '[ \t]*#.*' > /dev/null \
+ || expr "$line" : '[ \t]*;;[ \t]*$' > /dev/null \
+ || expr "$line" : '[ \t]*[^)]*)[ \t]*$' > /dev/null \
+ || expr "$line" : '[ \t]*;;[ \t]*#.**$' > /dev/null \
+ || expr "$line" : '[ \t]*[^)]*)[ \t]*;;[ \t]*$' > /dev/null \
+ || expr "$line" : '[ \t]*[^)]*)[ \t]*;;*[ \t]*#.*$' > /dev/null
+ then
+ return 0
+ fi
+
+ return 1
+}
+
+function _examine
+{
+ if [ -n "$*" ]
+ then
+ _msg "$args: \c"
+ eval _msg $args
+ else
+ _msg "Nothing to print"
+ fi
+}
+
+function _displayscript
+{
+ local i j start end bp cl
+
+ if (( $# == 1 ))
+ then
+ if test $1 = "%"
+ then
+ let start=1
+ let end=${#_lines[@]}
+ else
+ let start=$1-5
+ let end=$1+5
+ fi
+ elif (( $# > 1 ))
+ then
+ if test $1 = "^"
+ then
+ let start=1
+ else
+ let start=$1
+ fi
+
+ if test $2 = "\$"
+ then
+ let end=${#_lines[@]}
+ else
+ let end=$2
+ fi
+ else
+ let start=$_curline-5
+ let end=$_curline+5
+ fi
+
+ if (( $start < 1 ))
+ then
+ start=1
+ fi
+ if (( $end > ${#_lines[@]} ))
+ then
+ end=${#_lines[@]}
+ fi
+
+ let cl=$end-$start
+ if (( $cl > ${LINES-24} ))
+ then
+ pager=${PAGER-more}
+ else
+ pager=cat
+ fi
+
+ i=$start
+ ( while (( $i <= $end )); do
+ _showline $i
+ let i=$i+1
+ done ) 2>&1 | $pager
+
+ # calculate the next block of lines
+ let start=$end+1
+ let end=$start+11
+ if (( $end > ${#_lines[@]} ))
+ then
+ end=${#_lines[@]}
+ fi
+
+ _lastcmd="list $start $end"
+}
+
+function _xtrace
+{
+ let _trace="! $_trace"
+ if (( $_trace )); then
+ _msg "Execution trace on"
+ else
+ _msg "Execution trace off"
+ fi
+}
+
+function _msg
+{
+ echo -e "$@" >&2
+}
+
+function _showline
+{
+ local i=0 bp=' ' line=$1
+
+ while (( $i < ${#_linebp[@]} ))
+ do
+ if [ ${_linebp[$i]} ] && (( ${_linebp[$i]} == $line ))
+ then
+ bp='*'
+ fi
+ let i=$i+1
+ done
+
+ if (( $_curline == $line )); then
+ cl=">"
+ else
+ cl=" "
+ fi
+
+ if (( $line < 100 )); then
+ _msg "$_guineapig:$line $bp $cl${_lines[$line]}"
+ elif (( $line < 10 )); then
+ _msg "$_guineapig:$line $bp $cl${_lines[$line]}"
+ elif (( $line > 0 )); then
+ _msg "$_guineapig:$line $bp $cl${_lines[$line]}"
+ fi
+}
+
+function _cleanup
+{
+ rm -f $__debug $_potbelliedpig 2> /dev/null
+}
+
+function _menu
+{
+ _msg 'bashdb commands:
+ break N set breakpoint at line N
+ break list breakpoints & break condition
+ condition foo set break condition to foo
+ condition clear break condition
+ delete N clear breakpoint at line N
+ delete clear all breakpoints
+ display EXP evaluate and display EXP for each debug step
+ display show a list of display expressions
+ undisplay N remove display expression N
+ list N M display all lines of script between N and M
+ list N display 5 lines of script either side of line N
+ list display 5 lines if script either side of current line
+ continue continue execution upto next breakpoint
+ next [N] execute [N] statements (default 1)
+ print expr prints the value of an expression
+ trace toggle execution trace on/off
+ help print this menu
+ ! string passes string to a shell
+ quit quit'
+}
+
+
+_linebp=
+let _trace=0
+let _i=1
+
+# Be careful about quoted newlines
+_potbelliedpig=${TMPDIR-/tmp}/$_guineapig.$$
+sed 's,\\$,\\\\,' $_guineapig > $_potbelliedpig
+
+_msg "Reading source from file: $_guineapig"
+while read; do
+ _lines[$_i]=$REPLY
+ let _i=$_i+1
+done < $_potbelliedpig
+
+trap _cleanup EXIT
+# Assuming a real script will have the "#! /bin/sh" at line 1,
+# don't stop at line 1 on the first run
+let _steps=2
+LINENO=-2
+trap '_steptrap $LINENO' DEBUG
+:
--- /dev/null
+From friedman@cli.com Thu May 25 12:19:06 1995
+Flags: 10
+Return-Path: friedman@cli.com
+Received: from po.cwru.edu (root@po.CWRU.Edu [129.22.4.2]) by odin.INS.CWRU.Edu with ESMTP (8.6.10+cwru/CWRU-2.1-ins)
+ id MAA08685; Thu, 25 May 1995 12:19:05 -0400 (from friedman@cli.com for <chet@odin.INS.CWRU.Edu>)
+Received: from cli.com (cli.com [192.31.85.1]) by po.cwru.edu with SMTP (8.6.10+cwru/CWRU-2.3)
+ id MAA11299; Thu, 25 May 1995 12:19:00 -0400 (from friedman@cli.com for <chet@po.cwru.edu>)
+Received: from tepui.cli.com by cli.com (4.1/SMI-4.1)
+ id AA27213; Thu, 25 May 95 11:18:25 CDT
+Received: by tepui.cli.com (4.1) id AA16031; Thu, 25 May 95 11:18:23 CDT
+Message-Id: <9505251618.AA16031@tepui.cli.com>
+From: friedman@gnu.ai.mit.edu (Noah Friedman)
+To: chet@po.cwru.edu
+Subject: Bash scripts
+Reply-To: friedman@gnu.ai.mit.edu
+In-Reply-To: <chet@odin.ins.cwru.edu> Thu, 25 May 1995 11:19:59 -0400
+References: <9505251519.AA06424.SM@odin.INS.CWRU.Edu>
+Date: Thu, 25 May 95 11:18:21 CST
+
+>Hi. I snagged some of your bash functions from your home directory on
+>the FSF machines (naughty, I know), and I was wondering if you'd let
+>me distribute them with bash-2.0. Thanks.
+
+Sure. I think there's a later copy in
+~ftp/friedman/shell-inits/init-4.89.tar.gz. There are also some elisp and
+es frobs in that file.
+
+It should serve as a pretty good example of how to get carried away. :-)
+
--- /dev/null
+This collection of scripts was originally written for older versions
+of bash by Noah Friedman (friedman@gnu.ai.mit.edu). The conversion
+to bash v2 syntax was done by Chet Ramey.
+
+These scripts are as-is; there is no copyright associated with
+any of them. They exist simply as examples of bash scripting.
+
+Here's a description of what's in this directory:
+
+aref.bash Pseudo-arrays and substring indexing examples.
+bash.sub.bash Library functions used by require.bash.
+bash_version.bash A function to slice up $BASH_VERSION.
+meta.bash Enable and disable eight-bit readline input.
+mktmp.bash Make a temporary file with a unique name.
+number.bash A fun hack to translate numerals into English.
+PERMISSION Permissions to use the scripts in this directory.
+prompt.bash A way to set PS1 to some predefined strings.
+README README
+remap_keys.bash A front end to 'bind' to redo readline bindings.
+require.bash Lisp-like require/provide library functions for bash.
+send_mail.bash Replacement SMTP client written in bash.
+shcat.bash Bash replacement for 'cat(1)'.
+source.bash Replacement for source that uses current directory.
+string.bash The string(3) functions at the shell level.
+stty.bash Front-end to stty(1) that changes readline bindings too.
+y_or_n_p.bash Prompt for a yes/no/quit answer.
--- /dev/null
+# aref.bash --- pseudo-array manipulating routines
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created 1992-07-01
+# Last modified: 1993-02-03
+# Public domain
+
+# Conversion to bash v2 syntax done by Chet Ramey
+
+# Commentary:
+# Code:
+
+#:docstring aref:
+# Usage: aref NAME INDEX
+#
+# In array NAME, access element INDEX (0-origin)
+#:end docstring:
+
+###;;;autoload
+function aref ()
+{
+ local name="$1"
+ local index="$2"
+
+ set -- ${!name}
+ [ $index -ge 1 ] && shift $index
+ echo $1
+}
+
+#:docstring string_aref:
+# Usage: aref STRING INDEX
+#
+# Echo the INDEXth character in STRING (0-origin) on stdout.
+#:end docstring:
+
+###;;;autoload
+function string_aref ()
+{
+ local stuff=${1:$2}
+ echo ${stuff:0:1}
+}
+
+provide aref
+
+# aref.bash ends here
--- /dev/null
+# bash.sub.bash --- stub for standalone shell scripts using bash library
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1992-07-13
+# Last modified: 1993-09-29
+# Public domain
+
+#:docstring bash.sub:
+# Standard subroutines for bash scripts wishing to use "require" to load
+# libraries.
+#
+# Usage: In each directory where a bash script that uses this script
+# exists, place a copy of this script. Then, at the top of such scripts,
+# put the command
+#
+# source ${0%/*}/bash.sub || exit 1
+#
+# Then you can use `require' to load packages.
+#
+#:end docstring:
+
+default_FPATH="~friedman/etc/init/bash/functions/lib"
+
+source "${default_FPATH}/feature"
+REQUIRE_FAILURE_FATAL=t
+
+FPATH="${FPATH-${default_FPATH}}"
+
+# bash.sub.bash ends here
--- /dev/null
+# bash_version.bash --- get major and minor components of bash version number
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1993-01-26
+# Last modified: 1993-01-26
+# Public domain
+
+# Converted to bash v2 syntax by Chet Ramey
+
+# Commentary:
+# Code:
+
+#:docstring bash_version:
+# Usage: bash_version {major|minor}
+#
+# Echo the major or minor number of this version of bash on stdout, or
+# just echo $BASH_VERSION if no argument is given.
+#:end docstring:
+
+###;;;autoload
+function bash_version ()
+{
+ local major minor
+
+ case "$1" in
+ major) echo "${BASH_VERSION/.*/}" ;;
+ minor) major="${BASH_VERSION/.*/}"
+ minor="${BASH_VERSION#${major}.}"
+ echo "${minor%%.*}" ;;
+ patchlevel) minor="${BASH_VERSION#*.*.}"
+ echo "${minor%(*}" ;;
+ version) minor=${BASH_VERSION/#*.*./}
+ echo ${BASH_VERSION/%.$minor/} ;;
+ release) echo ${BASH_VERSION%(*} ;;
+ build) minor="${BASH_VERSION#*.*.*(}"
+ echo ${minor%)} ;;
+ *) echo "${BASH_VERSION}" ;;
+ esac
+}
+
+provide bash_version
+
+# bash_version.bash ends here
--- /dev/null
+# meta.bash --- meta key frobnications
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1992-06-28
+# Last modified: 1993-01-26
+# Public domain
+
+# Commentary:
+# Code:
+
+#:docstring meta:
+# Usage: meta [on|off]
+#
+# An argument of "on" will make bash use the 8th bit of any input from
+# a terminal as a "meta" bit, i.e bash will be able to use a real meta
+# key.
+#
+# An argument of "off" causes bash to disregard the 8th bit, which is
+# assumed to be used for parity instead.
+#:end docstring:
+
+function meta ()
+{
+ case "$1" in
+ on) bind 'set input-meta On'
+ bind 'set output-meta on'
+ bind 'set convert-meta off' ;;
+ off) bind 'set input-meta Off'
+ bind 'set output-meta off'
+ bind 'set convert-meta on' ;;
+ *) echo "Usage: meta [on|off]" 1>&2 ; return 1 ;;
+ esac
+ return 0
+}
+
+provide meta
+
+# meta.bash ends here
--- /dev/null
+# mktmp.bash
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1993-02-03
+# Last modified: 1993-02-03
+# Public domain
+
+# Conversion to bash v2 syntax done by Chet Ramey
+
+# Commentary:
+# Code:
+
+#:docstring mktmp:
+# Usage: mktmp [template] {createp}
+#
+# Generate a unique filename from TEMPLATE by appending a random number to
+# the end.
+#
+# If optional 2nd arg CREATEP is non-null, file will be created atomically
+# before returning. This is to avoid the race condition that in between
+# the time that the temporary name is returned and the caller uses it,
+# someone else creates the file.
+#:end docstring:
+
+###;;;autoload
+function mktmp ()
+{
+ local template="$1"
+ local tmpfile="${template}${RANDOM}"
+ local createp="$2"
+ local noclobber_status
+
+ case "$-" in
+ *C*) noclobber_status=set;;
+ esac
+
+ if [ "${createp:+set}" = "set" ]; then
+ # Version which creates file atomically through noclobber test.
+ set -o noclobber
+ (> "${tmpfile}") 2> /dev/null
+ while [ $? -ne 0 ] ; do
+ # Detect whether file really exists or creation lost because of
+ # some other permissions problem. If the latter, we don't want
+ # to loop forever.
+ if [ ! -e "${tmpfile}" ]; then
+ # Trying to create file again creates stderr message.
+ echo -n "mktmp: " 1>&2
+ > "${tmpfile}"
+ return 1
+ fi
+ tmpfile="${template}${RANDOM}"
+ (> "${tmpfile}") 2> /dev/null
+ done
+ test "${noclobber_status}" != "set" && set +o noclobber
+ else
+ # Doesn't create file, so it introduces race condition for caller.
+ while [ -e "${tmpfile}" ]; do
+ tmpfile="${template}${RANDOM}"
+ done
+ fi
+
+ echo "${tmpfile}"
+}
+
+provide mktmp
+
+# mktmp.bash ends here
--- /dev/null
+# number.bash
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1993-02-22
+# Last modified: 1993-04-01
+# Public domain
+
+# Conversion to bash v2 syntax done by Chet Ramey
+
+# Commentary:
+# Code:
+
+#:docstring number:
+# Usage: number [number]
+#
+# Converts decimal integers to english notation. Spaces and commas are
+# optional. Numbers 67 digits and larger will overflow this script.
+#
+# E.g: number 99,000,000,000,000,454
+# => ninety-nine quadrillion four hundred fifty-four
+#
+#:end docstring:
+
+function number ()
+{
+ local result
+ local val1
+ local val2
+ local val3
+ local d1
+ local d2
+ local d3
+
+ case "$*" in
+ *[!0-9,.]* )
+ echo "number: invalid character in argument." 1>&2
+ return 1
+ ;;
+ *.* )
+ echo "number: fractions not supported (yet)." 1>&2
+ return 1
+ ;;
+ esac
+
+ result=''
+
+ eval set - "`echo ${1+\"$@\"} | sed -n -e '
+ s/[, ]//g;s/^00*/0/g;s/\(.\)\(.\)\(.\)$/\"\1 \2 \3\"/;
+ :l
+ /[0-9][0-9][0-9]/{
+ s/\([^\" ][^\" ]*\)\([^\" ]\)\([^\" ]\)\([^\" ]\)/\1\"\2 \3 \4\"/g;
+ t l
+ }
+ /^[0-9][0-9][0-9]/s/\([^\" ]\)\([^\" ]\)\([^\" ]\)/\"\1 \2 \3\"/;
+ /^[0-9][0-9]/s/\([^\" ]\)\([^\" ]\)/\"\1 \2\"/;
+ /^[0-9]/s/^\([^\" ][^\" ]*\)/\"\1\"/g;s/\"\"/\" \"/g;p;'`"
+
+ while test $# -ne 0 ; do
+ eval `set - $1;
+ d3='' d2='' d1=''
+ case $# in
+ 1 ) d1=$1 ;;
+ 2 ) d2=$1 d1=$2 ;;
+ 3 ) d3=$1 d2=$2 d1=$3 ;;
+ esac
+ echo "d3=\"${d3}\" d2=\"${d2}\" d1=\"${d1}\""`
+
+ val1='' val2='' val3=''
+
+ case "${d3}" in
+ '1' ) val3='one' ;;
+ '2' ) val3='two' ;;
+ '3' ) val3='three' ;;
+ '4' ) val3='four' ;;
+ '5' ) val3='five' ;;
+ '6' ) val3='six' ;;
+ '7' ) val3='seven' ;;
+ '8' ) val3='eight' ;;
+ '9' ) val3='nine' ;;
+ esac
+
+ case "${d2}" in
+ '1' ) val2='teen' ;;
+ '2' ) val2='twenty' ;;
+ '3' ) val2='thirty' ;;
+ '4' ) val2='forty' ;;
+ '5' ) val2='fifty' ;;
+ '6' ) val2='sixty' ;;
+ '7' ) val2='seventy' ;;
+ '8' ) val2='eighty' ;;
+ '9' ) val2='ninety' ;;
+ esac
+
+ case "${val2}" in
+ 'teen')
+ val2=''
+ case "${d1}" in
+ '0') val1='ten' ;;
+ '1') val1='eleven' ;;
+ '2') val1='twelve' ;;
+ '3') val1='thirteen' ;;
+ '4') val1='fourteen' ;;
+ '5') val1='fifteen' ;;
+ '6') val1='sixteen' ;;
+ '7') val1='seventeen' ;;
+ '8') val1='eighteen' ;;
+ '9') val1='nineteen' ;;
+ esac
+ ;;
+ 0 ) : ;;
+ * )
+ if test ".${val2}" != '.' && test ".${d1}" != '.0' ; then
+ val2="${val2}-"
+ fi
+ case "${d1}" in
+ '0') val2="${val2} " ;;
+ '1') val1='one' ;;
+ '2') val1='two' ;;
+ '3') val1='three' ;;
+ '4') val1='four' ;;
+ '5') val1='five' ;;
+ '6') val1='six' ;;
+ '7') val1='seven' ;;
+ '8') val1='eight' ;;
+ '9') val1='nine' ;;
+ esac
+ ;;
+ esac
+
+ if test ".${val3}" != '.' ; then
+ result="${result}${val3} hundred "
+ fi
+
+ if test ".${val2}" != '.' ; then
+ result="${result}${val2}"
+ fi
+
+ if test ".${val1}" != '.' ; then
+ result="${result}${val1} "
+ fi
+
+ if test ".${d1}${d2}${d3}" != '.000' ; then
+ case $# in
+ 0 | 1 ) ;;
+ 2 ) result="${result}thousand " ;;
+ 3 ) result="${result}million " ;;
+ 4 ) result="${result}billion " ;;
+ 5 ) result="${result}trillion " ;;
+ 6 ) result="${result}quadrillion " ;;
+ 7 ) result="${result}quintillion " ;;
+ 8 ) result="${result}sextillion " ;;
+ 9 ) result="${result}septillion " ;;
+ 10 ) result="${result}octillion " ;;
+ 11 ) result="${result}nonillion " ;;
+ 12 ) result="${result}decillion " ;;
+ 13 ) result="${result}undecillion " ;;
+ 14 ) result="${result}duodecillion " ;;
+ 15 ) result="${result}tredecillion " ;;
+ 16 ) result="${result}quattuordecillion " ;;
+ 17 ) result="${result}quindecillion " ;;
+ 18 ) result="${result}sexdecillion " ;;
+ 19 ) result="${result}septendecillion " ;;
+ 20 ) result="${result}octodecillion " ;;
+ 21 ) result="${result}novemdecillion " ;;
+ 22 ) result="${result}vigintillion " ;;
+ * )
+ echo "Error: number too large (66 digits max)." 1>&2
+ return 1
+ ;;
+ esac
+ fi
+
+ shift
+ done
+
+ set - ${result}
+ case "$*" in
+ '') set - 'zero' ;;
+ esac
+
+ echo ${1+"$@"}
+}
+
+provide number
+
+# number.bash ends here
--- /dev/null
+# prompt.bash
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1992-01-15
+# Public domain
+
+# $Id: prompt.bash,v 1.2 1994/10/18 16:34:35 friedman Exp $
+
+# Commentary:
+# Code:
+
+#:docstring prompt:
+# Usage: prompt [chars]
+#
+# Various preformatted prompt strings selected by argument. For a
+# list of available arguments and corresponding formats, do
+# `type prompt'.
+#:end docstring:
+
+###;;;autoload
+function prompt ()
+{
+ case "$1" in
+ d) PS1='$(dirs) \$ ' ;;
+ n) PS1='\$ ' ;;
+ hsw) PS1='\h[$SHLVL]: \w \$ ' ;;
+ hw) PS1='\h: \w \$ ' ;;
+ sh) PS1='[$SHLVL] \h\$ ' ;;
+ sw) PS1='[$SHLVL] \w \$ ' ;;
+ uh) PS1='\u@\h\$ ' ;;
+ uhsHw) PS1='\u@\h[$SHLVL]:\#: \w \$ ' ;;
+ uhsw) PS1='\u@\h[$SHLVL]: \w \$ ' ;;
+ uhw) PS1='\u@\h: \w \$ ' ;;
+ uw) PS1='(\u) \w \$ ' ;;
+ w) PS1='\w \$ ' ;;
+ esac
+}
+
+provide prompt
+
+# prompt.bash ends here
--- /dev/null
+# remap_keybindings.bash
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1992-01-11
+# Last modified: 1993-02-03
+# Public domain
+
+# Conversion to bash v2 syntax done by Chet Ramey
+
+# Commentary:
+# Code:
+
+#:docstring remap_keybindings:
+# Usage: remap_keybindings old_function new_function
+#
+# Clear all readline keybindings associated with OLD_FUNCTION (a Readline
+# function) rebinding them to NEW_FUNCTION (`self-insert' by default)
+#
+# This requires bash version 1.10 or newer, since previous versions did not
+# implement the `bind' builtin.
+#:end docstring:
+
+###;;;autoload
+function remap_keybindings ()
+{
+ local unbind_function="$1"
+ local bind_function="${2:-'self-insert'}"
+ local bind_output
+ local arg
+
+ # If they're the same thing, the work has already been done. :-)
+ if [ "${unbind_function}" = "${bind_function}" ]; then
+ return 0
+ fi
+
+ while : ; do
+ bind_output="$(bind -q ${unbind_function} 2> /dev/null)"
+
+ case "${bind_output}" in
+ "${unbind_function} can be invoked via"* ) ;;
+ "" ) return 1 ;; # probably bad argument to bind
+ *) return 0 ;; # unbound
+ esac
+
+ # Format of bind_output is like:
+ # 'quoted-insert can be invoked via "\C-q", "\C-v".'
+ # 'self-insert can be invoked via " ", "!", """, "$", "%", ...'
+ set -- ${bind_output}
+ shift 5
+
+ for arg in "$@" ; do
+ # strip off trailing `.' or `,'
+ arg=${arg%.};
+ arg=${arg%,};
+
+ case ${arg} in
+ ..)
+ # bind -q didn't provide whole list of key bindings; jump
+ # to top loop to get more
+ continue 2 ;
+ ;;
+ *)
+ bind "${arg}: ${bind_function}"
+ ;;
+ esac
+ done
+ done
+}
+
+provide remap_keybindings
+
+# remap_keybindings.bash ends here
--- /dev/null
+# require.bash
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1992-07-08
+# Last modified: 1993-09-29
+# Public domain
+
+# Commentary:
+
+# These functions provide an interface based on the lisp implementation for
+# loading libraries when they are needed and eliminating redundant loading.
+# The basic idea is that each "package" (or set of routines, even if it is
+# only one function) registers itself with a symbol that marks a "feature"
+# as being "provided". If later you "require" a given feature, you save
+# yourself the trouble of explicitly loading it again.
+#
+# At the bottom of each package, put a "provide foobar", so when another
+# package has a "require foobar", it gets loaded and registered as a
+# "feature" that won't need to get loaded again. (See warning below for
+# reasons why provide should be put at the end.)
+#
+# The list of provided features are kept in the `FEATURES' variable, which
+# is not exported. Care should be taken not to munge this in the shell.
+# The search path comes from a colon-separated `FPATH' variable. It has no
+# default value and must be set by the user.
+#
+# Require uses `fpath_search', which works by scanning all of FPATH for a
+# file named the same as the required symbol but with a `.bash' appended to
+# the name. If that is found, it is loaded. If it is not, FPATH is
+# searched again for a file name the same as the feature (i.e. without any
+# extension). Fpath_search may be useful for doing library filename
+# lookups in other functions (such as a `load' or `autoload' function).
+#
+# Warning: Because require ultimately uses the builtin `source' command to
+# read in files, it has no way of undoing the commands contained in the
+# file if there is an error or if no provide statement appeared (this
+# differs from the lisp implementation of require, which normally undoes
+# most of the forms that were loaded if the require fails). Therefore, to
+# minize the number of problems caused by requiring a faulty package (such
+# as syntax errors in the source file) it is better to put the provide at
+# the end of the file, rather than at the beginning.
+
+# Code:
+
+# Exporting this variable would cause considerable lossage, since none of
+# the functions are exported (or at least, they're not guaranteed to be)
+export -n FEATURES
+
+#:docstring \f:
+# Null function. Provided only so that one can put page breaks in source
+# files without any ill effects.
+#:end docstring:
+#
+# (\\014 == C-l)
+eval "function $(echo -e \\014) () { : }"
+
+
+#:docstring featurep:
+# Usage: featurep argument
+#
+# Returns 0 (true) if argument is a provided feature. Returns 1 (false)
+# otherwise.
+#:end docstring:
+
+###;;;autoload
+function featurep ()
+{
+ local feature="$1"
+
+ case " ${FEATURES} " in
+ *" ${feature} "* ) return 0 ;;
+ esac
+
+ return 1
+}
+
+
+#:docstring provide:
+# Usage: provide symbol ...
+#
+# Register a list of symbols as provided features
+#:end docstring:
+
+###;;;autoload
+function provide ()
+{
+ local feature
+
+ for feature in "$@" ; do
+ if ! featurep "${feature}" ; then
+ FEATURES="${FEATURES} ${feature}"
+ fi
+ done
+
+ return 0
+}
+
+
+#:docstring require:
+# Usage: require feature {file}
+#
+# Load FEATURE if it is not already provided. Note that require does not
+# call `provide' to register features. The loaded file must do that
+# itself. If the package does not explicitly do a `provide' after being
+# loaded, require will complain about the feature not being provided on
+# stderr.
+#
+# Optional argument FILE means to try to load FEATURE from FILE. If no
+# file argument is given, require searches through FPATH (see fpath_search)
+# for the appropriate file.
+#
+# If the variable REQUIRE_FAILURE_FATAL is set, require will cause the
+# current shell invocation to exit, rather than merely return. This may be
+# useful for a shell script that vitally depends on a package.
+#
+#:end docstring:
+
+###;;;autoload
+function require ()
+{
+ local feature="$1"
+ local path="$2"
+ local file
+
+ if ! featurep "${feature}" ; then
+ file=$(fpath_search "${feature}" "${path}") && source "${file}"
+
+ if ! featurep "${feature}" ; then
+ echo "require: ${feature}: feature was not provided." 1>&2
+ if [ "${REQUIRE_FAILURE_FATAL+set}" = "set" ]; then
+ exit 1
+ fi
+ return 1
+ fi
+ fi
+
+ return 0
+}
+
+#:docstring fpath_search:
+# Usage: fpath_search filename {path ...}
+#
+# Search $FPATH for `filename' or, if `path' (a list) is specified, search
+# those directories instead of $FPATH. First the path is searched for an
+# occurrence of `filename.bash, then a second search is made for just
+# `filename'.
+#:end docstring:
+
+###;;;autoload
+function fpath_search ()
+{
+ local name="$1"
+ local path="$2"
+ local suffix=".bash"
+ local file
+
+ if [ -z "${path}" ]; then path="${FPATH}"; fi
+
+ for file in "${name}${suffix}" "${name}" ; do
+ set -- $(IFS=':'
+ set -- ${path}
+ for p in "$@" ; do
+ echo -n "${p:-.} "
+ done)
+
+ while [ $# -ne 0 ]; do
+ test -f "${1}/${file}" && { file="${1}/${file}"; break 2 }
+ shift
+ done
+ done
+
+ if [ $# -eq 0 ]; then
+ echo "fpath_search: ${name}: file not found in fpath" 1>&2
+ return 1
+ fi
+
+ echo "${file}"
+ return 0
+}
+
+provide require
+
+# require.bash ends here
--- /dev/null
+# send_mail.bash
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1992-07-02
+# Public domain
+
+# Commentary:
+
+# TODO: implement Fcc headers (see emacs manual)
+
+# Code:
+
+#:docstring send_mail:
+# Usage: send_mail
+#
+# This function serves as a simple replacement for sendmail as a client
+# interface on those systems where it is not available. It does assume
+# that one can talk to an SMTP mailer on port 25 either on the local host
+# or on the host specified by the MAILHOST environment variable. If you
+# have access to sendmail, it's better to use 'sendmail -t' instead of this
+# script (which probably isn't as robust).
+#
+# Message is read from stdin, and headers are parsed to determine
+# recipients.
+#:end docstring:
+
+###;;;autoload
+function send_mail ()
+{
+ # Need gawk, since several extensions are taken advantage of (like
+ # IGNORECASE for regexps).
+ local awk="${GAWK_LOCATION:-gawk}"
+ local DefaultFrom="${USER:-${LOGNAME}}"
+ local From
+ local To
+ local Cc
+ local Bcc
+ local tmpfile="/tmp/send_mail$$"
+
+ while [ -e "${tmpfile}" ]; do
+ tmpfile="/tmp/send_mail${RANDOM}"
+ done
+
+ # Lines consisting only of dots need one more dot appended. SMTP
+ # servers eat one of the dots (and if only 1 dot appears, it signifies
+ # the end of the message).
+ sed '/^\.\.*/s/^\(\.\.*\)$/\1./' > "${tmpfile}"
+
+ # Parse mail headers in message to extract recipients list.
+ # This doesn't affect what the user sees---it's only used to generate
+ # the rcpt-to lines for SMTP.
+ eval $(${awk} -f - "${tmpfile}" <<- '__EOF__'
+ # Try to extract email address from amidst random data
+ function parse_address (data)
+ {
+ # From: "real name" <foobar@host>
+ # From: "" <foobar@host>
+ if (match(data, /^\"[^\"]*\"[ \t]*<.*>/)) {
+ data_idx = match(data, /^\"[^\"]*\"[ \t]*</)
+ data = substr(data, RSTART + RLENGTH);
+ if (data_idx = match(data, ">.*"))
+ data = substr(data, 1, RSTART - 1);
+ return data
+ }
+ # From: real name <foobar@host>
+ if (match(data, /<.*>/)) {
+ data_idx = match(data, /</)
+ data = substr(data, RSTART + RLENGTH);
+ if (data_idx = match(data, ">"))
+ data = substr(data, 1, RSTART - 1);
+ return data
+ }
+ # From: foobar@host (real name)
+ if (match(data, /\(.*\)/)) {
+ data_idx = match(data, /\(/);
+ data = substr(data, 1, RSTART - 1);
+ return data
+ }
+ # (hopefully) From: foobar@host
+ return data
+ }
+
+ BEGIN { IGNORECASE = 1; }
+
+ # Blank line signifies end of headers, so we can stop looking.
+ /^$/ { exit(0) }
+
+ /^from:|^to:|^cc:|^bcc:/ {
+ header_idx = match($0, /^[^:]*:/)
+ if (header_idx) {
+ # Capitalize header name
+ header_firstchar = toupper(substr($0, RSTART, 1));
+ header_rest = tolower(substr($0, RSTART + 1, RLENGTH - 2));
+ header = header_firstchar header_rest
+
+ $0 = substr($0, RSTART + RLENGTH + 1);
+ addresses = ""
+ # parse addresses
+ while ($0) {
+ # Strip leading whitespace
+ if (idx = match($0, /[ \t]*/))
+ $0 = substr($0, RSTART + RLENGTH);
+
+ # Find everything up to a nonquoted comma
+ # FIXME: doesnt handle quoting yet
+ if (idx = match($0, /,/)) {
+ data = substr($0, 1, RSTART);
+ $0 = substr($0, RSTART + 1);
+ } else {
+ data = $0
+ $0 = ""
+ }
+ addresses = addresses " " parse_address(data)
+ }
+
+ printf("%s='%s'\n", header, addresses);
+ }
+ }
+ __EOF__)
+
+ # Not sure if an address is *required* after the HELO.. every sendmail
+ # I tried talking to didn't seem to care. Some sendmails don't care
+ # if there's a HELO at all.
+ cat <<- __EOF__ | telnet ${MAILHOST:-localhost} 25 > /dev/null 2>&1
+ HELO
+ mail from: ${From:-${DefaultFrom}}
+ $(for name in ${To} ${Cc} ${Bcc} ; do
+ echo "rcpt to: ${name}"
+ done)
+ data
+ $(cat "${tmpfile}")
+ .
+ quit
+ __EOF__
+
+ rm -f "${tmpfile}"
+}
+
+provide send_mail
+
+# send_mail.bash ends here
--- /dev/null
+# shcat.bash
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1992-07-17
+# Last modified: 1993-09-29
+# Public domain
+
+# Conversion to bash v2 syntax done by Chet Ramey
+
+# Commentary:
+# Code:
+
+#:docstring shcat:
+# Usage: shcat {file1} {file2} {...}
+#
+# Like `cat', only this is all inline bash.
+#:end docstring:
+
+###;;;autoload
+function shcat ()
+{
+ local IFS=""
+ local line
+ local file
+ local exitstat=0
+
+ if [ $# -eq 0 ]; then
+ while read -r line; do
+ echo "${line}"
+ done
+ return 0
+ else
+ for file in "$@" ; do
+ if [ -r "${file}" ]; then
+ while read -r line; do
+ echo "${line}"
+ done < "${file}"
+ else
+ # This will cause the error to be printed on stderr
+ < "${file}"
+ exitstat=1
+ fi
+ done
+ return ${exitstat}
+ fi
+}
+
+provide shcat
+
+# shcat.bash ends here
--- /dev/null
+# source.bash
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1992-05-17
+# Last modified: 1993-09-29
+# Public domain
+
+# Commentary:
+# Code:
+
+#:docstring source:
+# Usage: source file ...
+#
+# Source forces file arguments to be considered in the current directory
+# only, unless there is an absolute path starting with `/'. I think it's
+# bad that the builtin "source" searches PATH, because PATH normally
+# contains directories with binary files that aren't useful for bash to
+# read and most people don't put "." first in their path.
+#
+# This "source" is capable of reading more than one file at a time. Return
+# value is number of failed source attempts.
+#:end docstring:
+
+# This function is not hygienic, but there's not much we can do about
+# variable name conflicts here.
+
+###;;;autoload
+function source ()
+{
+ local -i _source_failure_count=0
+ local _source_file
+
+ for _source_file ; do
+ # Check first part of each filename. If it's not `/', `./', or
+ # `../' then prepend "./" to the path to force the builtin `source'
+ # not to go searching through PATH to find the file.
+ case "${_source_file}" in
+ /*|./*|../* ) ;;
+ * ) _source_file="./${_source_file}" ;;
+ esac
+
+ builtin source "${_source_file}" ||
+ _source_failure_count="_source_failure_count + 1"
+
+ done
+
+ return ${_source_failure_count}
+}
+
+#:docstring .:
+# See "source"
+#:end docstring:
+
+# So that `.' will call function definition of `source' instead of builtin
+
+###;;;autoload
+function . ()
+{
+ source "$@"
+}
+
+provide source
+
+# source.bash ends here
--- /dev/null
+# string.bash --- bash emulation of string(3) library routines
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1992-07-01
+# Last modified: 1993-09-29
+# Public domain
+
+# Conversion to bash v2 syntax done by Chet Ramey
+
+# Commentary:
+# Code:
+
+#:docstring strcat:
+# Usage: strcat s1 s2
+#
+# Strcat appends the value of variable s2 to variable s1.
+#
+# Example:
+# a="foo"
+# b="bar"
+# strcat a b
+# echo $a
+# => foobar
+#
+#:end docstring:
+
+###;;;autoload
+function strcat ()
+{
+ local s1_val s2_val
+
+ s1_val=${!1} # indirect variable expansion
+ s2_val=${!2}
+ eval "$1"=\'"${s1_val}${s2_val}"\'
+}
+
+#:docstring strncat:
+# Usage: strncat s1 s2 $n
+#
+# Line strcat, but strncat appends a maximum of n characters from the value
+# of variable s2. It copies fewer if the value of variabl s2 is shorter
+# than n characters. Echoes result on stdout.
+#
+# Example:
+# a=foo
+# b=barbaz
+# strncat a b 3
+# echo $a
+# => foobar
+#
+#:end docstring:
+
+###;;;autoload
+function strncat ()
+{
+ local s1="$1"
+ local s2="$2"
+ local -i n="$3"
+ local s1_val s2_val
+
+ s1_val=${!s1} # indirect variable expansion
+ s2_val=${!s2}
+
+ if [ ${#s2_val} -gt ${n} ]; then
+ s2_val=${s2_val:0:$n} # substring extraction
+ fi
+
+ eval "$s1"=\'"${s1_val}${s2_val}"\'
+}
+
+#:docstring strcmp:
+# Usage: strcmp $s1 $s2
+#
+# Strcmp compares its arguments and returns an integer less than, equal to,
+# or greater than zero, depending on whether string s1 is lexicographically
+# less than, equal to, or greater than string s2.
+#:end docstring:
+
+###;;;autoload
+function strcmp ()
+{
+ [ "$1" = "$2" ] && return 0
+
+ [ "${1}" '<' "${2}" ] > /dev/null && return -1
+
+ return 1
+}
+
+#:docstring strncmp:
+# Usage: strncmp $s1 $s2 $n
+#
+# Like strcmp, but makes the comparison by examining a maximum of n
+# characters (n less than or equal to zero yields equality).
+#:end docstring:
+
+###;;;autoload
+function strncmp ()
+{
+ if [ -z "${3}" ] || [ "${3}" -le "0" ]; then
+ return 0
+ fi
+
+ if [ ${3} -ge ${#1} ] && [ ${3} -ge ${#2} ]; then
+ strcmp "$1" "$2"
+ return $?
+ else
+ s1=${1:0:$3}
+ s2=${2:0:$3}
+ strcmp $s1 $s2
+ return $?
+ fi
+}
+
+#:docstring strlen:
+# Usage: strlen s
+#
+# Strlen returns the number of characters in string literal s.
+#:end docstring:
+
+###;;;autoload
+function strlen ()
+{
+ eval echo "\${#${1}}"
+}
+
+#:docstring strspn:
+# Usage: strspn $s1 $s2
+#
+# Strspn returns the length of the maximum initial segment of string s1,
+# which consists entirely of characters from string s2.
+#:end docstring:
+
+###;;;autoload
+function strspn ()
+{
+ # Unsetting IFS allows whitespace to be handled as normal chars.
+ local IFS=
+ local result="${1%%[!${2}]*}"
+
+ echo ${#result}
+}
+
+#:docstring strcspn:
+# Usage: strcspn $s1 $s2
+#
+# Strcspn returns the length of the maximum initial segment of string s1,
+# which consists entirely of characters not from string s2.
+#:end docstring:
+
+###;;;autoload
+function strcspn ()
+{
+ # Unsetting IFS allows whitspace to be handled as normal chars.
+ local IFS=
+ local result="${1%%[${2}]*}"
+
+ echo ${#result}
+}
+
+#:docstring strstr:
+# Usage: strstr s1 s2
+#
+# Strstr echoes a substring starting at the first occurrence of string s2 in
+# string s1, or nothing if s2 does not occur in the string. If s2 points to
+# a string of zero length, strstr echoes s1.
+#:end docstring:
+
+###;;;autoload
+function strstr ()
+{
+ # if s2 points to a string of zero length, strstr echoes s1
+ [ ${#2} -eq 0 ] && { echo "$1" ; return 0; }
+
+ # strstr echoes nothing if s2 does not occur in s1
+ case "$1" in
+ *$2*) ;;
+ *) return 1;;
+ esac
+
+ # use the pattern matching code to strip off the match and everything
+ # following it
+ first=${1/$2*/}
+
+ # then strip off the first unmatched portion of the string
+ echo "${1##$first}"
+}
+
+#:docstring strtok:
+# Usage: strtok s1 s2
+#
+# Strtok considers the string s1 to consist of a sequence of zero or more
+# text tokens separated by spans of one or more characters from the
+# separator string s2. The first call (with a non-empty string s1
+# specified) echoes a string consisting of the first token on stdout. The
+# function keeps track of its position in the string s1 between separate
+# calls, so that subsequent calls made with the first argument an empty
+# string will work through the string immediately following that token. In
+# this way subsequent calls will work through the string s1 until no tokens
+# remain. The separator string s2 may be different from call to call.
+# When no token remains in s1, an empty value is echoed on stdout.
+#:end docstring:
+
+###;;;autoload
+function strtok ()
+{
+ :
+}
+
+#:docstring strtrunc:
+# Usage: strtrunc $n $s1 {$s2} {$...}
+#
+# Used by many functions like strncmp to truncate arguments for comparison.
+# Echoes the first n characters of each string s1 s2 ... on stdout.
+#:end docstring:
+
+###;;;autoload
+function strtrunc ()
+{
+ n=$1 ; shift
+ for z; do
+ echo "${z:0:$n}"
+ done
+}
+
+provide string
+
+# string.bash ends here
--- /dev/null
+# stty.bash
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1992-01-11
+# Last modified: 1993-09-29
+# Public domain
+
+# Conversion to bash v2 syntax done by Chet Ramey
+
+# Commentary:
+# Code:
+
+require remap_keybindings
+
+#:docstring stty:
+# Track changes to certain keybindings with stty, and make those changes
+# reflect in bash's readline bindings as well.
+#
+# This requires bash version 1.10 or newer, since previous versions did not
+# implement the `bind' builtin.
+#:end docstring:
+
+###;;;autoload
+function stty ()
+{
+ local erase="backward-delete-char"
+ local kill="unix-line-discard"
+ local werase="backward-kill-word"
+ local lnext="quoted-insert"
+ local readline_function=""
+ local key=""
+ local stty_command=""
+
+ while [ $# -gt 0 ]; do
+ case "$1" in
+ erase | kill | werase | lnext )
+ key=$(echo "${2}" | cat -v | sed 's/\^/\\C-/')
+ readline_function=$(eval echo \$${1})
+
+ # Get rid of any current bindings; the whole point of this
+ # function is to make the distinction between readline
+ # bindings and particular cbreak characters transparent; old
+ # readline keybindings shouldn't hang around.
+ # could use bind -r here instead of binding to self-insert
+ remap_keybindings "${readline_function}" "self-insert"
+
+ # Bind new key to appropriate readline function
+ bind "\"${key}\": ${readline_function}"
+
+ stty_command="${stty_command} ${1} ${2}"
+ shift 2
+ ;;
+ *)
+ stty_command="${stty_command} ${1}"
+ shift
+ ;;
+ esac
+ done
+
+ command stty ${stty_command}
+}
+
+provide stty
+
+# stty.bash ends here
--- /dev/null
+# y_or_n_p.bash
+# Author: Noah Friedman <friedman@prep.ai.mit.edu>
+# Created: 1992-06-18
+# Last modified: 1993-03-01
+# Public domain
+
+# Conversion to bash v2 syntax done by Chet Ramey
+
+# Commentary:
+# Code:
+
+#:docstring y_or_n_p:
+# Usage: y_or_n_p QUERY
+#
+# Print QUERY on stderr, then read stdin for a y-or-n response. Actually,
+# user may type anything they like, but first character must be a `y', `n',
+# `q', or `!', otherwise the question is repeated until such an answer is
+# obtained.
+#
+# If user typed `y', y_or_n_p returns 0.
+#
+# If user typed `n', y_or_n_p returns 1.
+#
+# If user typed `!', y_or_n_p returns 2. This is an indication to the
+# caller that no more queries should be made. Assume `y' for all the rest.
+#
+# If user typed `q', y_or_n_p returns 3. This is an indication to the
+# caller that no more queries should be made. Assume `n' for all the rest.
+#
+#:end docstring:
+
+###;;;autoload
+function y_or_n_p ()
+{
+ local ans
+
+ [ ! -t 0 ] && return 1
+
+ while read -p "$*" -e ans ; do
+ case "${ans}" in
+ y* | Y* ) return 0 ;;
+ n* | N* ) return 1 ;;
+ \! ) return 2 ;;
+ q* | Q* ) return 3 ;;
+ *) echo "Please answer one of \`y', \`n', \`q', or \`"\!"'" 1>&2 ;;
+ esac
+ done
+}
+
+#:docstring yes_or_no_p:
+# Usage: yes_or_no_p QUERY
+#
+# Like y_or_n_p, but require a full `yes', `no', `yes!', or `quit' response.
+#:end docstring:
+
+###;;;autoload
+function yes_or_no_p ()
+{
+ local ans
+
+ [ ! -t 0 ] && return 3
+
+ while read -p "$*" -e ans; do
+ ans="$(echo ${ans} | tr '[A-Z]' '[a-z]')"
+
+ case "${ans}" in
+ yes ) return 0 ;;
+ no ) return 1 ;;
+ yes\! ) return 2 ;;
+ quit ) return 3 ;;
+ *) echo "Please answer \`yes', \`no', \`yes"\!"', or \`quit'" 1>&2 ;;
+ esac
+ done
+}
+
+provide y_or_n_p
+
+# y_or_n_p.bash ends here
--- /dev/null
+From spcecdt@armory.com Wed May 10 10:21:11 1995
+Flags: 10
+Return-Path: spcecdt@armory.com
+Received: from po.cwru.edu (root@po.CWRU.Edu [129.22.4.2]) by odin.INS.CWRU.Edu with ESMTP (8.6.10+cwru/CWRU-2.1-ins)
+ id KAA22876; Wed, 10 May 1995 10:21:10 -0400 (from spcecdt@armory.com for <chet@odin.INS.CWRU.Edu>)
+Received: from deepthought.armory.com (mmdf@deepthought.armory.com [192.122.209.42]) by po.cwru.edu with SMTP (8.6.10+cwru/CWRU-2.3)
+ id BAA16354; Wed, 10 May 1995 01:33:22 -0400 (from spcecdt@armory.com for <chet@po.cwru.edu>)
+From: John DuBois <spcecdt@armory.com>
+Date: Tue, 9 May 1995 22:33:12 -0700
+In-Reply-To: Chet Ramey <chet@odin.ins.cwru.edu>
+ "ksh scripts" (May 9, 1:36pm)
+X-Www: http://www.armory.com/~spcecdt/
+X-Mailer: Mail User's Shell (7.2.5 10/14/92)
+To: chet@po.cwru.edu
+Subject: Re: ksh scripts
+Message-ID: <9505092233.aa13001@deepthought.armory.com>
+
+ Sure. The canonical versions are available on ftp.armory.com; you might
+want to pick up the latest versions before modifying them.
+
+ John
+
+On May 9, 1:36pm, Chet Ramey wrote:
+} Subject: ksh scripts
+} From odin.ins.cwru.edu!chet Tue May 9 10:39:51 1995
+} Received: from odin.INS.CWRU.Edu by deepthought.armory.com id aa22336;
+} 9 May 95 10:39 PDT
+} Received: (chet@localhost) by odin.INS.CWRU.Edu (8.6.10+cwru/CWRU-2.1-ins)
+} id NAA20487; Tue, 9 May 1995 13:39:24 -0400 (from chet)
+} Date: Tue, 9 May 1995 13:36:54 -0400
+} From: Chet Ramey <chet@odin.ins.cwru.edu>
+} To: john@armory.com
+} Subject: ksh scripts
+} Cc: chet@odin.ins.cwru.edu
+} Reply-To: chet@po.cwru.edu
+} Message-ID: <9505091736.AA20411.SM@odin.INS.CWRU.Edu>
+} Read-Receipt-To: chet@po.CWRU.Edu
+} MIME-Version: 1.0
+} Content-Type: text/plain; charset=us-ascii
+} Status: OR
+}
+} Hi. I'm the maintainer of bash (the GNU `Bourne Again shell') for
+} the FSF.
+}
+} I picked up a tar file of ksh scripts you wrote from an anon FTP site
+} a while back. I'd like your permission to include modified versions
+} of some of them in the next major bash distribution (with proper credit
+} given, of course). Is it OK if I do that?
+}
+} Chet Ramey
+}
+} --
+} ``The lyf so short, the craft so long to lerne.'' - Chaucer
+}
+} Chet Ramey, Case Western Reserve University Internet: chet@po.CWRU.Edu
+}-- End of excerpt from Chet Ramey
+
+
+
--- /dev/null
+This collection of scripts was originally written for ksh-88 by
+John DuBois <spcecdt@armory.com>. The conversion to bash v2
+syntax was done by Chet Ramey.
+
+These scripts are as-is; there is no copyright associated with
+any of them. They exist simply as examples of bash scripting.
+
+Here's a description of what's in this directory:
+
+arc2tarz Convert an "arc" archive to a compressed tar archive.
+cal2day.bash Convert a day number to a name.
+corename Tell what produced a core file.
+fman Fast man(1) replacement.
+frcp Copy files using ftp(1) but with rcp-type command line syntax.
+lowercase Change filenames to lower case.
+ncp A nicer front end for cp(1) (has -i, etc.).
+newext Change the extension of a group of files.
+nmv A nicer front end for mv(1) (has -i, etc.).
+pages Print specified pages from files.
+PERMISSION Permissions to use the scripts in this directory.
+pf A pager front end that handles compressed files.
+README README
+ren Rename files by changing parts of filenames that match a pattern.
+rename Change the names of files that match a pattern.
+repeat Execute a command multiple times.
+untar Unarchive a (possibly compressed) tarfile into a directory.
+uudec Carefully uudecode(1) multiple files.
+uuenc uuencode(1) multiple files.
+vtree Print a visual display of a directory tree.
+where Show where commands that match a pattern are.
+
+The following scripts were written or converted by Chet Ramey:
+
+bashrand Random number generator with upper and lower bounds and optional seed.
+cdhist.bash cd replacement with a directory stack added.
+pmtop Poor man's 'top(1)' for SunOS 4.x and BSD/OS.
+shprof Line profiler for bash scripts.
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# arc2tarz: convert arced file to tarred, compressed form.
+# @(#) arc2tarz.ksh 1.0 92/02/16
+# 91/03/28 john h. dubois iii (john@armory.com)
+# 92/02/16 added -h option for help
+#
+# conversion to bash v2 syntax by Chet Ramey
+
+unset ENV
+Usage="Usage: $0 arcfile [-hcg] [ tarzfile ]"
+
+phelp()
+{
+echo "$Usage
+arcfile is the name of an arc file to convert to tarred, compressed form.
+The file must have a .arc extension, but only the base name needs to be
+given. If no output file name is given, it will be created in the current
+directory with the name being the arcfile basename followed by .tar.EXT.
+If the -c option is given, compress will be used, and EXT will be Z.
+The default (also available with -g) is to use gzip, in which case EXT
+is gz. If the basename is too long the extension may be truncated. All
+uppercase letters in the names of files in the archive are moved to lowercase."
+}
+
+compress=gzip
+ext=gz
+
+while getopts "hcg" opt; do
+ case "$opt" in
+ h) phelp; exit 0;;
+ c) compress=compress; ext=Z;;
+ g) compress=gzip ; ext=gz ;;
+ *) echo "$Usage" 1>&2 ; exit 2;;
+ esac
+done
+
+shift $((OPTIND - 1))
+
+if [ $# = 0 ]; then
+ phelp
+ exit 0
+fi
+
+[ -z "$TMP" ] && tmpdir=/tmp/arc2tarz.$$ || tmpdir=$TMP/arc2tarz.$$
+
+case "$1" in
+*.arc) arcfile=$1 ;;
+*) arcfile=$1.arc ;;
+esac
+
+if [ ! -f $arcfile ] || [ ! -r $arcfile ]; then
+ echo "Could not open arc file \"$arcfile\"."
+ exit 1
+fi
+
+case "$arcfile" in
+/*) ;;
+*) arcfile=$PWD/$arcfile ;;
+esac
+
+basename=${arcfile%.arc}
+basename=${basename##*/}
+[ $# -lt 2 ] && tarzname=$PWD/$basename.tar.$ext || tarzname=$2
+
+trap 'rm -rf $tmpdir $tarzname' 1 2 3 6 15
+
+mkdir $tmpdir
+cd $tmpdir
+echo "unarcing files..."
+arc -ie $arcfile
+
+# lowercase
+for f in *; do
+ new=$(echo $f | tr A-Z a-z)
+ if [ "$f" != "$new" ]; then
+ mv $f $new
+ fi
+done
+
+echo "tarring/compressing files..."
+tar cf - * | $compress > $tarzname
+cd -
+rm -rf $tmpdir
--- /dev/null
+#! /bin/bash
+# bashrand - generate a random number in a specified range with an
+# optionally specified ``seed'' value.
+#
+# Original Author: Peter Turnbull, May 1993
+
+usage()
+{
+ echo "$PROG: usage: $PROG [-s seed] lower-limit upper-limit" >&2
+}
+
+PROG=${0##*/}
+
+SEED=$$ # Initialize random-number seed value with PID
+
+while getopts s: opt
+do
+ case "$opt" in
+ s) SEED=$OPTARG ;;
+ *) usage ; exit 2 ;;
+ esac
+done
+
+shift $((OPTIND - 1))
+
+# Process command-line arguments:
+case $# in
+ 2) Lower=$1; Upper=$2 ;;
+ *) usage ; exit 2 ;;
+esac
+
+# Check that specified values are integers:
+expr "$Lower" + 0 >/dev/null 2>&1 || {
+ echo "$PROG: lower ($Lower) not an integer" >&2
+ exit 1
+}
+
+expr "$Upper" + 0 >/dev/null 2>&1 || {
+ echo "$PROG: upper ($Upper) not an integer" >&2
+ exit 1
+}
+
+expr "$SEED" + 0 >/dev/null 2>&1 || {
+ echo "$PROG: seed ($SEED) not an integer" >&2
+ exit 1
+}
+
+# Check that values are in the correct range:
+(( $Lower < 0 )) || [ `expr "$Lower" : '.*'` -gt 5 ] && {
+ echo "$PROG: Lower limit ($Lower) out of range" >&2
+ exit 1
+}
+
+(( $Upper > 32767 )) || [ `expr "$Upper" : '.*'` -gt 5 ] && {
+ echo "$PROG: Upper limit ($Upper) out of range" >&2;
+ exit 1
+}
+
+(( $SEED < 0 )) || (( $SEED > 32767 )) || [ `expr "$SEED" : '.*'` -gt 5 ] && {
+ echo "$PROG: Seed value ($SEED) out of range (0 to 32767)" >&2
+ exit 1
+}
+
+(( $Upper <= $Lower )) && {
+ echo "$PROG: upper ($Upper) <= lower value ($Lower)" >&2
+ exit 1
+}
+
+# Seed the random-number generator:
+RANDOM=$SEED
+
+# Compute value, scaled within range:
+let rand="$RANDOM % ($Upper - $Lower + 1) + $Lower"
+
+# Report result:
+echo $rand
--- /dev/null
+#!/bin/bash
+# cal2day - "parse" appropriate calendar output to match date number
+# with day name.
+#
+# usage: cal2day month day [year]
+#
+# ORIGINAL *TAG:33239 3:Dec 9 1997:0755:sh.d/cal2day:
+#
+# Obtained from usenet
+#
+# Converted to bash v2 syntax by Chet Ramey <chet@po.cwru.edu>
+
+#1 PARSE OPTIONS
+while getopts :dls _inst
+do case $_inst in
+ (d) format='%1d%.0s\n' ;; # 0, 1, ..., 7
+ (l) format='%0.s%-s\n' ;; # Sunday, Monday, ..., Saturday
+ (s) format='%0.s%-.3s\n' ;; # Sun, Mon, ..., Sat
+ esac
+done
+shift $((OPTIND-1))
+
+#2 PARAMETER VALUES
+((!$#)) && set -- $(date '+%m %d')
+: ${format:='%0.s%-.3s\n'}
+: ${1:?missing month parameter [1-12]}
+: ${2:?missing day parameter [1-31]}
+
+#3 CALCULATE DAY-OF-WEEK FROM DATE
+cal $1 ${3:-$(date +%Y)} | gawk -FX '
+BEGIN { day="Sunday Monday Tuesday WednesdayThursday Friday Saturday"
+ sub(/^0/, "", daynum)
+ dayre="(^| )" daynum "( |$)"
+ }
+#NR==2 { print length($0) }
+NR==1 || NR==2 \
+ { next }
+dayre { if (match($0, dayre))
+ { #print RSTART, RLENGTH, substr($0, RSTART, RLENGTH)
+ if (daynum<=9 || RSTART==1) RSTART-=1
+ exit
+ }
+ }
+END { # 20/21 char width assumed
+ printf format, RSTART/3, substr(day, RSTART*3+1, 9)
+ }
+' daynum=$2 format=$format -
+
+exit 0
--- /dev/null
+#! /bin/bash
+#
+# cdhist - cd replacement with a directory stack like pushd/popd
+#
+# usage: cd [-l] [-n] [-] [dir]
+#
+# options:
+# -l print the cd directory stack, one entry per line
+# - equivalent to $OLDPWD
+# -n cd to nth directory in cd directory stack
+# -s cd to first directory in stack matching (substring) `s'
+#
+# arguments:
+# dir cd to dir and push dir onto the cd directory stack
+#
+# If the new directory is a directory in the stack and the options selected
+# it (-n, -s), the new working directory is printed
+#
+# If the variable CDHISTFILE is set, the cd directory stack is loaded from
+# and written to $CDHISTFILE every time `cd' is executed.
+#
+# Note: I got this off the net somewhere; I don't know the original author
+#
+# Chet Ramey
+# chet@po.cwru.edu
+
+_cd_print()
+{
+ echo -e "$@"
+}
+
+cd()
+{
+ typeset -i cdlen i
+ typeset t
+
+ if [ $# -eq 0 ]
+ then
+ set -- $HOME
+ fi
+
+ if [ "$CDHISTFILE" ] && [ -r "$CDHISTFILE" ] # if directory history exists
+ then
+ typeset CDHIST
+ i=-1
+ while read -r t # read directory history file
+ do
+ CDHIST[i=i+1]=$t
+ done <$CDHISTFILE
+ fi
+
+ if [ "${CDHIST[0]}" != "$PWD" ] && [ -n "$PWD" ]
+ then
+ _cdins # insert $PWD into cd history
+ fi
+
+ cdlen=${#CDHIST[*]} # number of elements in history
+
+ case "$@" in
+ -) # cd to new dir
+ if [ "$OLDPWD" = "" ] && ((cdlen>1))
+ then
+ '_cdprint' ${CDHIST[1]}
+ builtin cd ${CDHIST[1]}
+ pwd
+ else
+ builtin cd "$@"
+ # pwd
+ fi
+ ;;
+ -l) # _cdprint directory list
+ ((i=cdlen))
+ while (((i=i-1)>=0))
+ do
+ num=$i
+ '_cdprint' "$num ${CDHIST[i]}"
+ done
+ return
+ ;;
+ -[0-9]|-[0-9][0-9]) # cd to dir in list
+ if (((i=${1#-})<cdlen))
+ then
+ '_cdprint' ${CDHIST[i]}
+ builtin cd ${CDHIST[i]}
+ pwd
+ else
+ builtin cd $@
+ # pwd
+ fi
+ ;;
+ -*) # cd to matched dir in list
+ t=${1#-}
+ i=1
+ while ((i<cdlen))
+ do
+ case ${CDHIST[i]} in
+ *$t*)
+ '_cdprint' ${CDHIST[i]}
+ builtin cd ${CDHIST[i]}
+ pwd
+ break
+ ;;
+ esac
+ ((i=i+1))
+ done
+ if ((i>=cdlen))
+ then
+ builtin cd $@
+ # pwd
+ fi
+ ;;
+ *) # cd to new dir
+ builtin cd $@
+ # pwd
+ ;;
+ esac
+
+ _cdins # insert $PWD into cd history
+
+ if [ "$CDHISTFILE" ]
+ then
+ cdlen=${#CDHIST[*]} # number of elements in history
+
+ i=0
+ while ((i<cdlen))
+ do
+ echo ${CDHIST[i]} # update directory history
+ ((i=i+1))
+ done >$CDHISTFILE
+ fi
+}
+
+_cdins() # insert $PWD into cd history
+{ # meant to be called only by cd
+ typeset -i i
+
+ i=0
+
+ while (( i < ${#CDHIST[*]} )) # see if dir is already in list
+ do
+ if [ "${CDHIST[$i]}" = "$PWD" ]
+ then
+ break
+ fi
+ ((i=i+1))
+ done
+
+ if (( i>22 )) # limit max size of list
+ then
+ i=22
+ fi
+
+ while (((i=i-1)>=0)) # bump old dirs in list
+ do
+ CDHIST[i+1]=${CDHIST[i]}
+ done
+
+ CDHIST[0]=$PWD # insert new directory in list
+}
+
+# examples
+shopt -s expand_aliases
+
+# go to known place before doing anything
+cd /
+
+echo CDHIST: "${CDHIST[@]}"
+for dir in /tmp /bin - -2 -l
+do
+ cd $dir
+ echo CDHIST: "${CDHIST[@]}"
+ echo PWD: $PWD
+
+done
+
+exit 0
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# @(#) corename.ksh 1.0 93/04/01
+# 92/11/11 john h. dubois iii (john@armory.com)
+# 92/02/16 Added help option.
+# 92/02/22 Added cd to origdir to fix prob w/multiple relative paths.
+# 93/04/01 Added check for whether file exists.
+#
+# conversion to bash v2 syntax done by Chet Ramey
+
+# inspired by belal's equivalent utility
+
+if [ "$1" = -h ]; then
+ echo \
+"$0: print the names of executables that dumped core.
+Usage: $0 [corename ...]
+If no corename is given, \"core\" is assumed."
+ exit 0
+fi
+
+[ $# = 0 ] && set core
+origdir=$PWD
+for i; do
+ cd $origdir
+ file=${i##*/}
+ dir=${i%$file}
+ [ -z "$dir" ] && dir=$origdir/
+ if [ ! -f $dir$file ]; then
+ echo "$dir$file: No such file."
+ continue
+ fi
+ if [ ! -r $dir$file ]; then
+ echo "$dir$file: Cannot open."
+ continue
+ fi
+ cd $dir
+
+ # the adb output syntax is highly variable. this works on SunOS 4.x
+ set -- $(adb $file < /dev/null 2>&1 | sed 1q)
+ name=${7#??}
+ echo "$i: ${name%??}"
+done
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# fman: new man program
+# @(#) fman.ksh 1.5 94/04/16
+# 91/07/03 john h. dubois iii (john@armory.com)
+# 91/07/11 made it unpack man pages if neccessary
+# 91/07/16 fixed test for whether man file pattern was expanded
+# 92/01/21 made it read /etc/default/man to get section order,
+# and only display the first section found.
+# 92/02/06 changed name to fman
+# 92/02/07 fixed bug in notfound
+# 92/02/13 incorporated changes from DOS version
+# 92/03/11 changed to use MANPATH from environment if set,
+# and search all directories given in MANPATH
+# 92/03/15 exec pager or man w/o forking
+# 92/05/31 try using index if one exists
+# 92/10/01 Added "See also <other sections>"
+# 92/10/18 If PAGER is less, search for name of man page to make it easier
+# to find information in man pages for multiple items
+# 92/11/11 Make it work for compressed files not listed in index;
+# deal with man pages listed in index that don't exist.
+# 93/03/30 Fixed bug in MANPATH processing
+# 93/06/17 Include paths in "See also:" message if they would be needed
+# to get to a man page. Allow MANPATH spec on command line.
+# 93/07/09 Added -h and -e options.
+# 94/04/16 Added x option.
+#
+# conversion to bash v2 syntax done by Chet Ramey
+
+istrue()
+{
+ test 0 -ne "$1"
+}
+
+isfalse()
+{
+ test 0 -eq "$1"
+}
+
+# Finds all sections that man page $1 is in and puts them in the the
+# global array Sections[].
+# The filename of each page is put in FileNames[] with the same index.
+# Global vars used:
+# patharr[] MANPATH directories.
+
+FindSectionsInIndex ()
+{
+ typeset index indexes section mpath page=$1
+ typeset -i i=0 NIndex=0
+
+ for mpath in "${patharr[@]}"; do
+ if [ -r $mpath/index ]; then
+ indexes="$indexes $mpath/index"
+ let NIndex+=1
+ fi
+ done
+ [ -z "$indexes" ] && return
+ # Make grep give filename
+ [ NIndex -lt 2 ] && indexes="$indexes /dev/null"
+ # set positional parameters to
+ # indexfile:searchname pagename section ...
+ # e.g.
+ # /usr/man/index:FP_OFF Routines DOS
+ set -- `grep "^$page[ ]" $indexes`
+ while [ $# -gt 2 ]; do
+ FileNames[i]=${1%%index*}cat$3/$2.$3
+ Sections[i]=$3
+ shift 3
+ let i+=1
+ done
+}
+
+# Finds all sections that man page $1 is in by searching each man directory
+# in the order given in patharr[],
+# and puts them in the the global array Sections[].
+# The filename of each page is put in FileNames[] with the same index.
+# Global vars used:
+# patharr[] MANPATH directories.
+FindSectionsInDirs ()
+{
+ local page=$1 mpath AllPaths Path
+ typeset -i i
+
+ for mpath in "${patharr[@]}"; do
+ AllPaths="$AllPaths $mpath/cat[0-9]*/$page.* $mpath/man[0-9]*/$page.*"
+ done
+
+ i=0
+ for Path in $AllPaths; do
+ istrue $debug && echo Path = $Path
+ case "$Path" in
+ *\*) ;;
+ *)
+ # Remove compressed-file suffix to make FileNames be the same
+ # as it is when built by FindSectionsInIndex()
+ FileNames[i]=${Path%.[zZ]}
+ Path=${Path%/*}
+ Sections[i]=${Path##*/*.}
+ let i+=1 ;;
+ esac
+ done
+}
+
+# FindSection: display man page.
+# Uses ordarr[] (built from $ORDER) to display the version of the man
+# page that occurs first in $ORDER.
+# Sections[] gives the sections that a man page was found in.
+# If the global variable "exist" is set to 1, nothing is displayed;
+# the function instead returns zero if a page is found, nonzero if not.
+# The filename of each page is in FileNames[] with the same index.
+# Global vars used:
+# Sections[], FileNames[], ordarr[]
+FindSection ()
+{
+ typeset -i NumPages i foundsec
+ local section OtherSec filename NPAGER=$PAGER POpt page=$1 Pat
+ local PageFile
+
+ NumPages=${#Sections[*]} # Number of versions of man page found.
+ isfalse $NumPages && return 1
+ case "$PAGER" in
+ *less) Popt="-p$page" ;;
+ esac
+
+ # For each section in ORDER, determine if any man page was found in
+ # that section
+ for section in "${ordarr[@]}"; do
+ i=0
+ foundsec=0
+ while [ $i -lt $NumPages ]; do
+ if [ "${Sections[i]}" = $section ]; then
+ # Found a man page from this section of ORDER
+ filename=${FileNames[i]}
+ if [ -z "$PageFile" ]; then
+ PageFile=$filename
+ else
+ if istrue $foundsec; then
+ OtherSec="$OtherSec$page(${filename%/*/*} $section) "
+ else
+ OtherSec="$OtherSec$page($section) "
+ fi
+ fi
+ foundsec=1
+ istrue $exist && return
+ fi
+ let i+=1
+ done
+ done
+ # No pages with the specified section found.
+ [ -z "$PageFile" ] && return 1
+ # Return if all we want to know is whether the man page exists.
+ [ "$exist" = 1 ] && return 0
+ if [ -z "$OtherSec" ]; then
+ NPAGER="exec $PAGER"
+ fi
+ if [ -r $PageFile ]; then
+ $NPAGER $POpt $PageFile
+ elif [ -r $PageFile.z ]; then
+ pcat $PageFile.z | $NPAGER $POpt
+ elif [ -r $PageFile.Z ]; then
+ zcat $PageFile.Z | $NPAGER $POpt
+ elif [ -f $PageFile.gz ]; then
+ gzip -dc $PageFile.gz | $NPAGER $POpt
+ else
+ echo "$PageFile: cannot open." 1>&2
+ OtherSec=
+ unset Sections[i]
+ let i+=1
+ continue
+ fi
+ echo "See also $OtherSec"
+ exit 0
+}
+
+phelp()
+{
+echo "$name: print man pages.
+$name locates and prints the specified manual pages from the online UNIX
+documentation.
+$Usage
+Options:
+-e: Determine whether the specified man page exists. Nothing is printed;
+ $0 exits with a zero status if the page exists and a nonzero status if
+ it does not.
+-h: Print this help."
+}
+
+# main program
+
+typeset -i exist=0 debug=0
+
+name=${0##*/}
+Usage="Usage: $name [-eh] [[manpath] section] command-name"
+
+while getopts :hex opt; do
+ case $opt in
+ h) phelp; exit 0;;
+ e) exist=1 ;;
+ x) debug=1 ;;
+ +?) echo "$name: options should not be preceded by a '+'." 1>&2; exit 2;;
+ ?)
+ echo "$name: $OPTARG: bad option. Use -h for help." 1>&2 ; exit 2 ;;
+ esac
+done
+
+# remove args that were options
+shift $((OPTIND-1))
+
+if [ $# -lt 1 ]; then
+ echo -e "$Usage\nUse -h for help." 1>&2
+ exit
+fi
+
+P=$PAGER
+O=1:n:l:6:8:2:3:4:5:7:p:o
+T=$TERM
+M=${MANPATH:-/usr/local/man:/usr/man}
+[ -f /etc/default/man ] && . /etc/default/man
+[ -n "$P" ] && PAGER=$P
+[ -n "$O" ] && ORDER=$O
+[ -n "$T" ] && TERM=$T
+[ -n "$M" ] && MANPATH=$M
+
+case $# in
+0) echo "No man page specified." ; exit 1;;
+1) page=$1;;
+2) ORDER=$(echo $1 | tr a-z A-Z) ; page=$2;;
+3) MANPATH=$1
+ [ -n "$2" ] && ORDER=$(echo $2 | tr a-z A-Z)
+ page=$3;;
+*) echo "Too many arguments."; exit 1;;
+esac
+
+aargs=("$@")
+[ ! -t 0 ] && PAGER=cat
+
+OIFS=$IFS
+IFS=:
+patharr=($MANPATH)
+i=0
+for d in $MANPATH; do
+ for sec in $ORDER; do
+ ordarr[i]=$d/cat${sec}
+ let i+=1
+ ordarr[i]=$d/man${sec}
+ let i+=1
+ done
+done
+IFS=$OIFS
+
+istrue $debug && echo patharr = "${patharr[@]}"
+
+# if less or more is being used, remove multiple blank lines
+export LESS="-s $LESS"
+export MORE="-s $MORE"
+
+# Try using index
+FindSectionsInIndex "$page"
+# Exit 0 if a page was found and we're just testing for existence.
+FindSection "$page" && exit 0
+
+# Try searching directories
+unset Sections[*]
+FindSectionsInDirs "$page"
+FindSection "$page" && exit 0
+
+istrue $exist && exit 1
+
+# Try using man
+# If using more or less, make man run faster by letting more or less compress
+# multiple blank lines instead of rmb
+#case "$PAGER" in
+#*more|*less) manopt=-b;;
+#esac
+
+#cmd=(man $manopt -p$PAGER "${aargs[@]}")
+export PAGER
+cmd=(man $manopt "${aargs[@]}")
+istrue $debug && echo "$name: running ${cmd[*]}" 1>&2
+exec "${cmd[@]}"
--- /dev/null
+#! /bin/bash
+#
+# original from:
+#
+# @(#) frcp.ksh 2.2 93/11/14
+# 92/06/29 john h. dubois iii (john@armory.com)
+# 92/10/14 Cleaned up, improved, added -d and -r options
+# 92/11/11 Made work with a dest of '.'
+# 93/07/09 Added -l and -n options, & login as anonymous if no .netrc entry
+# 93/11/14 Use either passwd or password in .netrc, since ftp does.
+#
+# conversion to bash v2 syntax by Chet Ramey
+#
+# frcp: ftp front end with rcp-like syntax.
+# Note: requires any machine names given to be listed with
+# user and password in .netrc. If not, anonymous FTP is
+# done.
+#
+# full path to ftp binary
+if [ -x /usr/bin/ftp ]; then
+ FTP=/usr/bin/ftp;
+elif [ -x /usr/ucb/ftp ]; then
+ FTP=/usr/ucb/ftp
+else
+ FTP=ftp
+fi
+
+istrue()
+{
+ test 0 -ne "$1"
+}
+isfalse()
+{
+ test 0 -eq "$1"
+}
+
+# For each filename given, put the filename in filename[n]
+# and the machine it is on in machine[n].
+function SplitNames {
+ typeset file
+ typeset -i i=1
+
+ unset filename[*] machine[*]
+ for file; do
+ case "$file" in
+ *:*) machine[i]=${file%%:*} ;;
+ *) machine[i]=$LocalMach ;;
+ esac
+ filename[i]=${file#*:}
+ let i+=1
+ done
+}
+
+function verboseprint {
+ echo "$@"
+ echo "$@" 1>&2
+}
+
+function MakeDir {
+ OFS=$IFS
+ local IFS=/ dir component
+
+ case "$1" in
+ /*) ;;
+ *) dir=.
+ esac
+ set -- $1
+ IFS=$OFS
+ for component; do
+ dir=$dir/$component
+ if [ ! -d "$dir" ]; then
+ if mkdir "$dir"; then :; else
+ echo "Could not make directory $dir." >&2
+ return 1
+ fi
+ fi
+ done
+ return 0
+}
+
+lastisdot ()
+{
+ case "$1" in
+ */.|*/..) return 0;;
+ *) return 1;;
+ esac
+}
+
+# CopyFiles: issue ftp(TC) commands to copy files.
+# Usage: CopyFiles [sourcemachine:]sourcepath ... [destmachine:]destpath
+# Global vars:
+# Uses LocalMach (should be name of local machine)
+# Sets global arrs machine[]/filename[]
+function CopyFiles {
+ unset machine[*] filename[*]
+
+ SplitNames "$@" # split names into filename[1..n] and machine[1..n]
+
+ local DestMach=${machine[$#]} # Machine to copy files to
+ local DestPath=${filename[$#]} # Destination file/dir
+
+ unset machine[$#] filename[$#]
+
+ [ -z "$DestPath" ] && DestPath=. # dest was given as machine:
+
+ # Try to determine if destination should be a directory
+ # so that it can be forced to be a directory.
+
+ case "$DestPath" in
+ */) ;; # don't add / if trailing / already present
+ *) if [ $# -gt 2 ] || # if more than two args given, last must be a dir
+ # If dest in on local machine, check whether it is a directory
+ [ $DestMach = $LocalMach ] && [ -d "$DestPath" ] ||
+ # If dest ends with . or .., it is a directory
+ lastisdot "$DestPath"
+ then
+ DestPath=$DestPath/
+ fi ;;
+ esac
+
+ # If one of the above tests made us think dest is a directory,
+ # but it isn't, complain
+ case "$DestPath" in
+ */) if [ "$DestMach" = "$LocalMach" ] && [ ! -d "$DestPath" ]; then
+ echo "Destination is not a directory." 1>&2
+ exit 1
+ fi ;;
+ esac
+
+ DoCopy "$DestMach" "$DestPath"
+}
+
+# Usage: OpenMachine machine-name
+# Emits login sequence or doesn't, depending on .netrc file and global
+# variables anon and noanon
+OpenMachine ()
+{
+ local machine=$1 netrc=$HOME/.netrc user= password=
+
+ if isfalse $anon && [ -r $netrc ]; then
+ set -- $(gawk '
+ /machine (.* )?'"$machine"'($| )/,/^ *$/ {
+ Fields[$1] = $2
+ if ("passwd" in Fields)
+ Fields["password"] = Fields["passwd"]
+ if ("login" in Fields && "password" in Fields) {
+ print Fields["login"] " " Fields["password"]
+ exit
+ }
+ }
+ ' $netrc )
+ user=$1
+ password=$2
+ fi
+ if [ -z "$password" ]; then
+ if istrue $noanon; then
+ echo "No .netrc entry for machine $machine" 1>&2
+ exit 1
+ fi
+ user=anonymous
+ password=$USER@$LocalMach
+ fi
+ verboseprint open $machine
+ echo user $user "*******" 1>&2
+ echo user $user $password
+}
+
+# Usage: DoCopy destination-machine destination-path
+# Copies the files in global arrs machine[]/filename[] to the given dest
+# Global vars:
+# Uses machine[], filename[], LocalMach, check
+DoCopy ()
+{
+ local DestMach=$1
+ local DestPath=$2
+ local OpenMach # Machine that connection is currently open to
+ local OWD=$PWD SourceMach SourceFile
+ local FileName
+ typeset -i i=1
+
+ while [ $i -le ${#machine[*]} ]; do
+ istrue $check && verboseprint "runique"
+
+ SourceMach=${machine[i]}
+ SourceFile=${filename[i]}
+
+ DestFile=$DestPath
+ # if DestPath is a dir,
+ # add source filename to it without source path
+ case "$DestFile" in
+ */) DestFile=$DestFile${SourceFile##*/} ;;
+ esac
+
+ if [ $SourceMach = $LocalMach ]; then
+ if [ $DestMach != "$OpenMach" ]; then
+ OpenMachine $DestMach
+ OpenMach=$DestMach
+ fi
+ verboseprint put $SourceFile $DestFile
+ elif [ $DestMach = $LocalMach ]; then
+ if istrue $check && [ -f "$DestFile" ]; then
+ echo "$DestFile already exists." 1>&2
+ continue
+ fi
+ # If destination is on local machine,
+ # the dest will be a full dir/filename
+ if istrue $createdirs; then
+ MakeDir "${DestFile%/*}" || continue
+ fi
+ if [ $SourceMach != "$OpenMach" ]; then
+ OpenMachine $SourceMach
+ OpenMach=$SourceMach
+ fi
+ # If source filename has wildcards ([, ], *, ?) do an mget
+ case "$SourceFile" in
+ \[*\]|*\**|*\?*)
+ verboseprint lcd "$DestFile"
+ verboseprint mget "$SourceFile"
+ verboseprint lcd $OWD ;;
+ *) verboseprint get "$SourceFile" "$DestFile" ;;
+ esac
+ else
+ echo "Neither source machine \"$SourceMach\" "\
+"nor destination machine \"$DestMach\" is local." 1>&2
+ fi
+ let i+=1
+ done
+}
+
+# Start of main program
+name=${0##*/}
+
+if [ "$1" = -h ]; then
+ echo \
+"$name: do ftp transfers using rcp-style parameters.
+Usage: $name <source> <destpath> or $name <source> [<source> ...] <destdir>
+At least one of <source> and <destpath> must be the local system.
+A remote filename is given as machinename:filename
+If remote filenames contain wildcards, they will be globbed on the remote
+machine. Make sure they are quoted when $name is invoked.
+If the invoking user's .netrc file (see ftp(TC)) contains an entry for the
+remote system with a login and password supplied, $name will log in using
+the given login and password. If not, $name will login in as user
+anonymous and with the user@localsystem as the password.
+Options:
+-c: check: do not overwrite files.
+-d: create directories as needed.
+-f: force: overwrite files (default).
+-h: print this help.
+-l: fail if there is no entry with login and password for the remote system,
+ instead of logging in as anonymous.
+-n: log in as anonymous even if there is an entry for the remote system in
+ the user's .netrc file.
+-r: read source/dest filename pairs from the standard input,
+ one pair per line, and copy files accordingly."
+ exit 0
+fi
+
+typeset -i check=0 createdirs=0 readinput=0 anon=0 noanon=0
+
+while getopts :cdflnr Option
+do
+ case "$Option" in
+ c) check=1;;
+ d) createdirs=1;;
+ f) check=0;;
+ l) noanon=1;;
+ n) anon=1;;
+ r) readinput=1;;
+ \?) echo "$OPTARG: invalid option."; exit 1;;
+ esac
+done
+
+shift $((OPTIND-1))
+
+LocalMach=`hostname`
+
+if istrue $readinput; then
+ while read line; do
+ CopyFiles $line
+ done | $FTP -nv
+else
+ if [ $# -lt 2 ]; then
+ echo "$name: Not enough arguments. Use -h for help." 1>&2
+ exit
+ fi
+ CopyFiles "$@" | $FTP -nv
+fi
--- /dev/null
+#! /bin/bash
+#
+# original from
+# @(#) lowercase.ksh 1.0 92/10/08
+# 92/10/08 john h. dubois iii (john@armory.com)
+#
+# conversion to bash v2 syntax done by Chet Ramey
+
+Usage="Usage: $name file ..."
+phelp()
+{
+echo "$name: change filenames to lower case.
+$Usage
+Each file is moved to a name with the same directory component, if any,
+and with a filename component that is the same as the original but with
+any upper case letters changed to lower case."
+}
+
+name=${0##*/}
+
+while getopts "h" opt; do
+ case "$opt" in
+ h) phelp; exit 0;;
+ *) echo "$Usage" 1>&2; exit 2;;
+ esac
+done
+
+shift $((OPTIND - 1))
+
+for file; do
+ filename=${file##*/}
+ case "$file" in
+ */*) dirname=${file%/*} ;;
+ *) dirname=. ;;
+ esac
+ nf=$(echo $filename | tr A-Z a-z)
+ newname="${dirname}/${nf}"
+ if [ "$nf" != "$filename" ]; then
+ mv "$file" "$newname"
+ echo "$0: $file -> $newname"
+ else
+ echo "$0: $file not changed."
+ fi
+done
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# @(#) ncp.ksh,nmv.ksh 1.1 94/07/23
+# 92/01/18 john h. dubois iii (john@armory.com)
+# 92/01/31 added check for no args left after shifts
+# 92/02/17 added help
+# 92/02/25 remove path component from filename before tacking it onto dest.
+# 92/03/15 exec mv or cp
+# 93/07/13 Added -i
+# 93/09/29 Made abort if file exists optional.
+# 93/11/19 Exit before invoking mv if no files to move
+# 94/01/03 Added o option
+# 94/04/13 Added x option.
+# Fixed appending of source filename, broken by earlier change.
+# 94/07/23 Append only the filename part of the source path.
+#
+# conversion to bash v2 syntax done by Chet Ramey
+
+false()
+{
+ return 1
+}
+
+true()
+{
+ return 0
+}
+
+phelp()
+{
+echo "$name: do a $cmd with extra checking and options.
+$Usage
+$name is used as a front end for $cmd to get the [icfo] options, and so
+that a trailing / will force the last component of the path to be
+interpreted as a directory, so that $name foo bar/ will fail if bar is
+not an existing directory, instead of changing the name of foo to bar.
+Effectively, $name foo bar/ is short for $name foo bar/foo
+Options:
+-h prints this help.
+-c checks first for the existence of each file, and fails if it exists.
+-i is like -c except that if the file exists and stdin and stdout are a
+ tty, a query is printed and a reply is read; a file is overwritten only
+ if the reply begins with 'y'.
+-f unsets -c and -i (in case $cmd is aliased to $name).
+-o (overwrite only) checks that the named file(s) exist and fails for any
+ that do not. It is the complement of the -c option.
+Whichever of [cifo] comes later on the command line determines the behaviour.
+Any of these options must come before any standard $cmd options."
+}
+
+# interactive: Attempt to overwrite file should result in interactive
+# query rather than automatic failure.
+# noover: Do not overwrite files (if interactive is true, query, else fail)
+# overwrite: Only overwriting is allowed, not creation of new files.
+# debug: Print debugging info.
+typeset interactive=false noover=false overwrite=false debug=false
+name=${0##*/}
+
+case "$name" in
+ncp|nmv) cmd=/bin/${name#?} ;;
+*) echo "$name: Must be invoked as ncp or nmv." 1>&2 ; exit 2;;
+esac
+
+Usage="Usage: $name [-cfhio] $cmd-cmd-line"
+
+while getopts :cfhiox opt; do
+ case $opt in
+ h) phelp; exit 0;;
+ x) debug=true ;;
+ c) noover=true ;;
+ i) noover=true ; interactive=true ;;
+ f) noover=false ; interactive=false ;;
+ o) overwrite=true ; noover=false ; interactive=false;;
+ +?) echo "$name: options should not be preceded by a '+'." 1>&2; exit 2;;
+ ?) echo "$name: $OPTARG: bad option. Use -h for help." 1>&2 ; exit 2;;
+ esac
+done
+
+# remove args that were options
+shift $((OPTIND - 1))
+
+if [ $# -lt 2 ]; then
+ echo -e "$Usage\nUse -h for help."
+ exit
+fi
+
+Check()
+{
+ if [ ! -f "$1" ] && $overwrite; then
+ echo "$name: $1: File does not exist." 1>&2
+ return 1
+ elif [ -f "$1" ] && $noover; then
+ if [ $interactive = false ] || [ ! -t 0 ] || [ ! -t 1 ]; then
+ echo "$name: $1: File exists." 1>&2
+ return 1
+ else
+ while :; do
+ echo -n \
+"$name: $1: File exists. Overwrite? (y)es/(n)o/(a)bort/(Y)es for all: " 1>&2
+ read reply
+ case "$reply" in
+ y*)
+ echo "$name: Overwriting $1."
+ return 0
+ ;;
+ Y*)
+ echo "$name: Overwriting $1."
+ interactive=false
+ noover=false
+ return 0
+ ;;
+ [nN]*)
+ echo "$name: Skipping $2."
+ return 1
+ ;;
+ [aA]*)
+ echo "$name: Aborting."
+ exit 1
+ ;;
+ *)
+ echo "$name: Invalid response." 1>&2
+ ;;
+ esac
+ done
+ fi
+ else
+ return 0
+ fi
+}
+
+# i is the index of the filename being examined
+# lastarg is the index of the last filename before the dest directory name
+typeset -i i=0 lastarg=$(($#-1))
+
+# Sets argv[0..$#-1]
+argv=("$@")
+$debug && echo argv = "${argv[@]}" 1>&2
+dest=${argv[lastarg]}
+
+if $debug; then
+ echo \
+"interactive=$interactive noover=$noover overwrite=$overwrite debug=$debug
+lastarg=$lastarg dest=$dest name=$name cmd=$cmd
+files=$*" 1>&2
+fi
+
+if $noover || $overwrite; then
+ $debug && echo "checking for existance of directories..." 1>&2
+ # If the destination is not intended to be a directory...
+ if [ $# -eq 2 ] && [ ! -d "$dest" ]; then
+ Check "$dest" "$1" || exit 0 # No files to copy
+ else
+ while [ $i -lt $lastarg ]; do
+ Check "$dest/${argv[i]##*/}" "${argv[i]}" || unset argv[i]
+ let i+=1
+ done
+ fi
+fi
+
+[ ${#argv[@]} -lt 2 ] && exit 0
+
+# If only 2 args are given, mv/cp will not insist that the destination
+# be a directory, which we want if the destination ends in "/" or if
+# the original number of args was >2.
+# $# is still the original number of args.
+# Tack the file name onto the destination to force this behaviour.
+
+lastisslash()
+{
+ case "$1" in
+ */) return 0;;
+ *) return 1;;
+ esac
+}
+
+if [ ${#argv[@]} = 2 ] && { lastisslash "$2" || [ $# -gt 2 ]; }; then
+ $debug && echo "Appending filename." 1>&2
+ # Don't know which element of argv[] holds the source filename,
+ # since may have started with more than 1 source file & had some unset.
+ # So, compact args to make it easy to find the set one.
+ argv=("${argv[@]}")
+ argv[1]="${argv[1]}/${argv[0]##*/}"
+fi
+
+$debug && echo "Executing command: $cmd ${argv[@]}" 1>&2
+exec $cmd "${argv[@]}"
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# newext: change filename extension
+# @(#) newext.sh 1.1 93/04/13
+# 90/06/06 john h. dubois iii (john@armory.com)
+# 90/11/14 changed ksh-specific code to hybrid: if running under Bourne,
+# uses expr instead of ksh builtin ops. Removed SYSV specific code.
+# 91/08/06 added -t option
+# 92/11/06 made earlier code actually work!
+# 93/04/13 If no filenames given, act on files in current dir
+#
+# conversion to bash v2 syntax by Chet Ramey
+
+usage="Usage: newext [-th] <oldext> <newext> [filename ...]"
+
+phelp()
+{
+echo "$usage
+Rename all given files that end in oldext with newext replacing oldext.
+If no filenames are given, all files in the current directory that end
+in oldext are acted on (no filename is equivalent to '*').
+Options:
+-h: Print this help.
+-t: Test: No action is taken except to print the mv commands that would
+be executed if -t was not given."
+}
+
+while getopts "th" opt; do
+ case "$opt" in
+ t) echo=echo;;
+ h) phelp; exit 0;;
+ *) echo "$usage" 1>&2; exit 2;;
+ esac
+done
+
+shift $((OPTIND - 1))
+
+oldext=$1
+newext=$2
+
+case $# in
+[01]) echo -e "$usage\nUse -h for help." 1>&2; exit 2;;
+2) shift ; shift; set -- *;;
+*) shift ; shift;;
+esac
+
+found=
+
+for file
+do
+ case "$file" in
+ *$oldext)
+ newname="${file%$oldext}$newext"
+ $echo mv "$file" "$newname"
+ found=true;;
+ esac
+done
+
+if [ -z "$found" ]; then
+ echo "No files ending in \"$oldext\"."
+ exit 1
+fi
+exit 0
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# @(#) ncp.ksh,nmv.ksh 1.1 94/07/23
+# 92/01/18 john h. dubois iii (john@armory.com)
+# 92/01/31 added check for no args left after shifts
+# 92/02/17 added help
+# 92/02/25 remove path component from filename before tacking it onto dest.
+# 92/03/15 exec mv or cp
+# 93/07/13 Added -i
+# 93/09/29 Made abort if file exists optional.
+# 93/11/19 Exit before invoking mv if no files to move
+# 94/01/03 Added o option
+# 94/04/13 Added x option.
+# Fixed appending of source filename, broken by earlier change.
+# 94/07/23 Append only the filename part of the source path.
+#
+# conversion to bash v2 syntax done by Chet Ramey
+
+false()
+{
+ return 1
+}
+
+true()
+{
+ return 0
+}
+
+phelp()
+{
+echo "$name: do a $cmd with extra checking and options.
+$Usage
+$name is used as a front end for $cmd to get the [icfo] options, and so
+that a trailing / will force the last component of the path to be
+interpreted as a directory, so that $name foo bar/ will fail if bar is
+not an existing directory, instead of changing the name of foo to bar.
+Effectively, $name foo bar/ is short for $name foo bar/foo
+Options:
+-h prints this help.
+-c checks first for the existence of each file, and fails if it exists.
+-i is like -c except that if the file exists and stdin and stdout are a
+ tty, a query is printed and a reply is read; a file is overwritten only
+ if the reply begins with 'y'.
+-f unsets -c and -i (in case $cmd is aliased to $name).
+-o (overwrite only) checks that the named file(s) exist and fails for any
+ that do not. It is the complement of the -c option.
+Whichever of [cifo] comes later on the command line determines the behaviour.
+Any of these options must come before any standard $cmd options."
+}
+
+# interactive: Attempt to overwrite file should result in interactive
+# query rather than automatic failure.
+# noover: Do not overwrite files (if interactive is true, query, else fail)
+# overwrite: Only overwriting is allowed, not creation of new files.
+# debug: Print debugging info.
+typeset interactive=false noover=false overwrite=false debug=false
+name=${0##*/}
+
+case "$name" in
+ncp|nmv) cmd=/bin/${name#?} ;;
+*) echo "$name: Must be invoked as ncp or nmv." 1>&2 ; exit 2;;
+esac
+
+Usage="Usage: $name [-cfhio] $cmd-cmd-line"
+
+while getopts :cfhiox opt; do
+ case $opt in
+ h) phelp; exit 0;;
+ x) debug=true ;;
+ c) noover=true ;;
+ i) noover=true ; interactive=true ;;
+ f) noover=false ; interactive=false ;;
+ o) overwrite=true ; noover=false ; interactive=false;;
+ +?) echo "$name: options should not be preceded by a '+'." 1>&2; exit 2;;
+ ?) echo "$name: $OPTARG: bad option. Use -h for help." 1>&2 ; exit 2;;
+ esac
+done
+
+# remove args that were options
+shift $((OPTIND - 1))
+
+if [ $# -lt 2 ]; then
+ echo -e "$Usage\nUse -h for help."
+ exit
+fi
+
+Check()
+{
+ if [ ! -f "$1" ] && $overwrite; then
+ echo "$name: $1: File does not exist." 1>&2
+ return 1
+ elif [ -f "$1" ] && $noover; then
+ if [ $interactive = false ] || [ ! -t 0 ] || [ ! -t 1 ]; then
+ echo "$name: $1: File exists." 1>&2
+ return 1
+ else
+ while :; do
+ echo -n \
+"$name: $1: File exists. Overwrite? (y)es/(n)o/(a)bort/(Y)es for all: " 1>&2
+ read reply
+ case "$reply" in
+ y*)
+ echo "$name: Overwriting $1."
+ return 0
+ ;;
+ Y*)
+ echo "$name: Overwriting $1."
+ interactive=false
+ noover=false
+ return 0
+ ;;
+ [nN]*)
+ echo "$name: Skipping $2."
+ return 1
+ ;;
+ [aA]*)
+ echo "$name: Aborting."
+ exit 1
+ ;;
+ *)
+ echo "$name: Invalid response." 1>&2
+ ;;
+ esac
+ done
+ fi
+ else
+ return 0
+ fi
+}
+
+# i is the index of the filename being examined
+# lastarg is the index of the last filename before the dest directory name
+typeset -i i=0 lastarg=$(($#-1))
+
+# Sets argv[0..$#-1]
+argv=("$@")
+$debug && echo argv = "${argv[@]}" 1>&2
+dest=${argv[lastarg]}
+
+if $debug; then
+ echo \
+"interactive=$interactive noover=$noover overwrite=$overwrite debug=$debug
+lastarg=$lastarg dest=$dest name=$name cmd=$cmd
+files=$*" 1>&2
+fi
+
+if $noover || $overwrite; then
+ $debug && echo "checking for existance of directories..." 1>&2
+ # If the destination is not intended to be a directory...
+ if [ $# -eq 2 ] && [ ! -d "$dest" ]; then
+ Check "$dest" "$1" || exit 0 # No files to copy
+ else
+ while [ $i -lt $lastarg ]; do
+ Check "$dest/${argv[i]##*/}" "${argv[i]}" || unset argv[i]
+ let i+=1
+ done
+ fi
+fi
+
+[ ${#argv[@]} -lt 2 ] && exit 0
+
+# If only 2 args are given, mv/cp will not insist that the destination
+# be a directory, which we want if the destination ends in "/" or if
+# the original number of args was >2.
+# $# is still the original number of args.
+# Tack the file name onto the destination to force this behaviour.
+
+lastisslash()
+{
+ case "$1" in
+ */) return 0;;
+ *) return 1;;
+ esac
+}
+
+if [ ${#argv[@]} = 2 ] && { lastisslash "$2" || [ $# -gt 2 ]; }; then
+ $debug && echo "Appending filename." 1>&2
+ # Don't know which element of argv[] holds the source filename,
+ # since may have started with more than 1 source file & had some unset.
+ # So, compact args to make it easy to find the set one.
+ argv=("${argv[@]}")
+ argv[1]="${argv[1]}/${argv[0]##*/}"
+fi
+
+$debug && echo "Executing command: $cmd ${argv[@]}" 1>&2
+exec $cmd "${argv[@]}"
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# @(#) pages.sh 1.0 92/09/26
+# 92/09/05 John H. DuBois III (jhdiii@armory.com)
+# 92/09/26 Added help
+#
+# conversion to bash v2 syntax by Chet Ramey
+
+Usage="$0 [-h] [-n lines/page] page-ranges [file ...]"
+
+usage()
+{
+ echo "$Usage" 1>&2
+}
+
+phelp()
+{
+echo "$0: print selected pages.
+Usage: $Usage
+
+If no file names are given, the standard input is read.
+
+The input is grouped into pages and a selected subset of them is printed.
+Formfeeds are acted on correctly.
+
+If the output device does automatic line wrap, lines that longer than
+the width of the output device will result in incorrect output.
+The first non-option argument is a list of pages to print.
+
+Pages are given as a list of ranges separated by commas.
+A range is either one number, two numbers separted by a dash,
+or one number followed by a dash. A range consisting of one
+number followed by a dash extends to the end of the document.
+
+Options:
+-n sets the number of lines per page to n. The default is 66."
+}
+
+while getopts "n:h" opt; do
+ case "$opt" in
+ n) LinesPerPage=$OPTARG;;
+ h) phelp; exit 0;;
+ *) usage; exit 2;;
+ esac
+done
+
+shift $(($OPTIND - 1))
+
+if [ $# -eq 0 ]; then
+ echo $0: no page ranges given. 1>&2
+ usage
+ exit 1
+fi
+
+PageList=$1
+shift
+
+gawk "
+BEGIN {
+ PageList = \"$PageList\"; LinesPerPage = \"$LinesPerPage\""'
+ if (LinesPerPage == "")
+ LinesPerPage = 66
+ else
+ if (LinesPerPage !~ "[1-9][0-9]*")
+ ErrExit("Bad value for lines per page: " LinesPerPage)
+ LinesPerPage += 0
+ NumRanges = split(PageList,Ranges,",")
+ for (i = 1; i <= NumRanges; i++) {
+ if ((StartRange = EndRange = Ranges[i]) !~ "^[0-9]+(-([0-9]+)?)?$")
+ ErrExit("Bad range \"" StartRange "\"")
+ sub("-.*","",StartRange)
+ sub(".*-","",EndRange)
+ if (EndRange == "")
+ EndRange = 2 ^ 30
+ # Force StartRange and EndRange to be numeric values
+ if ((StartRange += 0) == 0 || (EndRange += 0) == 0)
+ ErrExit("Invalid page number \"0\" in range " Ranges[i])
+ if (StartRange > EndRange)
+ ErrExit("Start page comes after end page in range " Ranges[i])
+ TmpRangeStarts[i] = StartRange
+ TmpRangeEnds[i] = EndRange
+ }
+
+ # Sort ranges
+ qsort(TmpRangeStarts,k)
+ RangeEnds[0] = 0
+ for (i = 1; i <= NumRanges; i++) {
+ RangeEnds[i] = TmpRangeEnds[k[i]]
+ if ((RangeStarts[i] = TmpRangeStarts[k[i]]) <= RangeEnds[i - 1])
+ ErrExit("Overlapping ranges: " Ranges[k[i]] "," Ranges[k[i - 1]])
+ }
+
+ RangeNum = LineNum = PageNum = 1
+ InRange = In(PageNum,RangeStarts[RangeNum],RangeEnds[RangeNum])
+ FS = "\014"
+}
+
+{
+ if (LineNum > LinesPerPage)
+ NewPage()
+ if (InRange)
+ printf "%s",$1
+ # Deal with formfeeds
+ for (i = 2; i <= NF; i++) {
+ if (InRange)
+ printf "\014"
+ NewPage()
+ if (InRange)
+ printf "%s",$i
+ }
+ if (InRange)
+ print ""
+ LineNum++
+}
+
+function NewPage() {
+ PageNum++
+ LineNum = 1
+ # At the start of each page, check whether we are in a print range
+ WereInRange = InRange
+ InRange = In(PageNum,RangeStarts[RangeNum],RangeEnds[RangeNum])
+ # If last page was in range and we no longer are, move to next range
+ if (WereInRange && !InRange && ++RangeNum > NumRanges)
+ exit
+}
+
+function In(a,Min,Max) {
+ return (Min <= a && a <= Max)
+}
+
+function ErrExit(S) {
+ print S > "/dev/stderr"
+ Err = 1
+ exit 1
+}
+
+# Arr is an array of values with arbitrary indices.
+# Array k is returned with numeric indices 1..n.
+# The values in k are the indices of array arr,
+# ordered so that if array arr is stepped through
+# in the order arr[k[1]] .. arr[k[n]], it will be stepped
+# through in order of the values of its elements.
+# The return value is the number of elements in the array (n).
+function qsort(arr,k, ArrInd,end) {
+ end = 0
+ for (ArrInd in arr)
+ k[++end] = ArrInd;
+ qsortseg(arr,k,1,end);
+ return end
+}
+
+function qsortseg(arr,k,start,end, left,right,sepval,tmp,tmpe,tmps) {
+ # handle two-element case explicitely for a tiny speedup
+ if ((end - start) == 1) {
+ if (arr[tmps = k[start]] > arr[tmpe = k[end]]) {
+ k[start] = tmpe
+ k[end] = tmps
+ }
+ return
+ }
+ left = start;
+ right = end;
+ sepval = arr[k[int((left + right) / 2)]]
+ # Make every element <= sepval be to the left of every element > sepval
+ while (left < right) {
+ while (arr[k[left]] < sepval)
+ left++
+ while (arr[k[right]] > sepval)
+ right--
+ if (left < right) {
+ tmp = k[left]
+ k[left++] = k[right]
+ k[right--] = tmp
+ }
+ }
+ if (left == right)
+ if (arr[k[left]] < sepval)
+ left++
+ else
+ right--
+ if (start < right)
+ qsortseg(arr,k,start,right)
+ if (left < end)
+ qsortseg(arr,k,left,end)
+}
+' "$@"
--- /dev/null
+#! /bin/bash
+#
+# original from:
+#
+# @(#) p.ksh 1.1 93/11/09
+# p: page compressed & plain files in the order given
+# 92/01/23 john h. dubois iii (john@armory.com)
+# 92/02/14 changed incorrect zpack to pcat
+# 92/02/16 added help
+# 92/10/11 search for file.Z and file.z if file not found
+# 92/10/18 pass options to pager
+# 93/11/09 Understand gzipped files too
+# Wait after printing message about unreadable files
+# Make less prompt include name of file being uncompressed
+#
+# conversion to bash v2 by Chet Ramey; renamed to pf
+#
+DefPager=/local/bin/less
+
+istrue()
+{
+ test 0 -ne "$1"
+}
+
+warn()
+{
+ echo "$@" 1>&2
+}
+
+if [ "$1" = -h ]; then
+ echo \
+"$0: page a file.
+Usage: $0 [pager-option ...] [filename ...]
+Files are paged by the program specified in the user's PAGER
+environment variable, or by $DefPager if PAGER is not set.
+If no filename is given, text to page is read from the standard input.
+If filenames are given, they are either paged directly, or unpacked/
+uncompressed and then paged. Files are assumed to be in packed, compressed,
+or gzipped format if the filename ends in .Z, .z, or .gz respectively.
+If a filename that does not end in .Z, .z, or .gz is not found, it is
+searched for with one of those extensions attached.
+Each group of plain files is paged by a single instance of the pager.
+Each packed or compressed file is paged by a separate instance of the
+pager.
+Initial arguments beginning with + or - are taken to be pager options and
+are passed to each instance of the pager.
+If a pager option takes a value it should be given with the option as a
+single argument (with no space between the option and the value)."
+ exit 0
+fi
+
+# Get pager options
+while [ $# -gt 0 ]; do
+ case "$1" in
+ -*|+*) Opts="$Opts $1" ; shift;;
+ *) break;;
+ esac
+done
+
+[ -z "$PAGER" ] && PAGER=$DefPager
+
+# Read from stdin
+[ $# = 0 ] && exec $PAGER $Opts
+
+typeset -i filenum=0 badfile=0
+
+for file; do
+ if [ ! -r "$file" ]; then
+ case "$file" in
+ *.[Zz]|*.gz)
+ # Check if user specified a compressed file without giving its extension
+ for ext in Z z gz; do
+ if [ -r "$file.$ext" ]; then
+ file="$file.$ext"
+ break
+ fi
+ done;;
+ esac
+ fi
+ if [ ! -r "$file" ]; then
+ warn "$file: cannot read."
+ badfile=1
+ else
+ files[filenum]=$file
+ let filenum+=1
+ fi
+done
+
+if istrue $badfile && [ $filenum -gt 0 ]; then
+ echo -n "Press return to continue..." 1>&2
+ read
+fi
+
+unset plain
+
+for file in "${files[@]}"; do
+ case "$file" in
+ *.[zZ]|*.gz)
+ set -- Z zcat z pcat gz gzcat
+ # Find correct uncompression program
+ while [ $# -gt 0 ]; do
+ case "$file" in
+ *.$1)
+ # Page any uncompressed files so that they will be read
+ # in the correct order
+ [ ${#plain[@]} -gt 0 ] && $PAGER $Opts "${plain[@]}"
+ unset plain[*]
+ # If page is less, set the prompt to include the name of
+ # the file being uncompressed. Escape the . in the extension
+ # because less treats is specially in prompts (other dots
+ # in filenames will still be mucked with).
+ case "$PAGER" in
+ *less) Prompt="-P[${file%.$1}\\.$1] (%pb\\%)" ;;
+ *) unset Prompt ;;
+ esac
+ $2 "$file" | $PAGER "$Prompt" $Opts
+ break
+ esac
+ shift 2
+ done
+ ;;
+ *) plain[${#plain[@]}]=$file;;
+ esac
+done
+
+# Page any uncompressed files that haven't been paged yet
+[ ${#plain[@]} -gt 0 ] && exec $PAGER $Opts "${plain[@]}"
--- /dev/null
+#! /bin/bash
+#
+# pmtop - poor man's `top' for SunOS 4.x
+#
+
+CLEAR=clear # could also be 'tput clear'
+HEADER="USER PID %CPU %MEM SZ RSS TT STAT START TIME COMMAND"
+
+if [ -n "$LINES" ]; then
+ SS=$(( $LINES - 2 ))
+else
+ SS=20
+fi
+
+while :
+do
+ $CLEAR
+ echo "$HEADER"
+ ps -aux | sort -nr -k 3 | sed ${SS}q
+ sleep 5
+done
+
+exit 0
+
+
--- /dev/null
+#!/bin/bash
+#@ This program came from: ftp://ftp.armory.com/pub/scripts/ren
+#@ Look there for the latest version.
+#@ If you don't find it, look through http://www.armory.com/~ftp/
+#
+# @(#) ren 2.1.1 2002-03-17
+# 1990-06-01 John H. DuBois III (john@armory.com)
+# 1991-02-25 Improved help info
+# 1992-06-07 Remove quotes from around shell pattern as required by new ksh
+# 1994-05-10 Exit if no globbing chars given.
+# 1995-01-23 Allow filename set to be given on command line.
+# 1997-09-24 1.4 Let [] be used for globbing. Added x option.
+# 1997-11-26 1.4.1 Notice if the sequences of globbing chars aren't the same.
+# 1999-05-13 Changed name to ren to avoid conflict with /etc/rename
+# 2000-01-01 1.4.2 Let input patterns that contain whitespace be used.
+# 2001-02-14 1.5 Better test for whether old & new globbing seqs are identical.
+# 2001-02-20 1.6 Added pP options.
+# 2001-02-27 1.7 Added qf options. Improved interpretation of rename patterns.
+# 2001-05-10 1.8 Allow multiple pP options. Added Qr options.
+# 2001-07-25 2.0 Added mz options.
+# 2001-11-25 2.1 Allow segment ranges to be given with -m. Work under ksh93.
+# 2002-03-17 2.1.1 Fixed bug in test for legal expressions.
+
+# todo: It would be nice to be able to escape metacharacters with '\'
+# todo: Should enhance patterns to make ] in a pair of brackets work ([]])
+# todo: Allow use of all ksh globbing patterns.
+# todo: Allow use of extended regexps, with () to enumerate pieces and \num to
+# todo: select them.
+#
+# Modifications for bash made by Chet Ramey <chet@po.cwru.edu>
+
+name=${0##*/}
+Usage="Usage:
+$name [-fhqtv] [-m<segstart[:segend]=operation>] [-z<len>] [-[pP]<pattern>]
+ oldpattern [newpattern [filename ...]]
+or
+$name -r [same options as above] oldpattern newpattern directory ..."
+tell=false
+verbose=false
+warn=true
+warnNoFiles=true
+debug=false
+recurse=false
+inclPat=
+exclPat=
+declare -i inclCt=0 exclCt=0
+check=true
+declare -i j op_end_seg
+
+# Begin bash additions
+shopt -s extglob
+
+#
+# ksh print emulation
+#
+# print [-Rnprsu[n]] [-f format] [arg ...]
+#
+# - end of options
+# -R BSD-style -- only accept -n, no escapes
+# -n do not add trailing newline
+# -p no-op (no coprocesses)
+# -r no escapes
+# -s print to the history file
+# -u n redirect output to fd n
+# -f format printf "$format" "$@"
+#
+
+print()
+{
+ local eflag=-e
+ local nflag= fflag= c
+ local fd=1
+
+ OPTIND=1
+ while getopts "fRnprsu:" c
+ do
+ case $c in
+ R) eflag= ;;
+ r) eflag= ;;
+ n) nflag=-n ;;
+ s) sflag=y ;;
+ f) fflag=y ;;
+ u) fd=$OPTARG ;;
+ p) ;;
+ esac
+ done
+ shift $(( $OPTIND - 1 ))
+
+ if [ -n "$fflag" ]; then
+ builtin printf "$@" >&$fd
+ return
+ fi
+
+ case "$sflag" in
+ y) builtin history -s "$*" ;;
+ *) builtin echo $eflag $nflag "$@" >&$fd
+ esac
+}
+
+# End bash additions
+
+while getopts :htvxp:P:fqQrm:z: opt; do
+ case $opt in
+ h)
+ print -r -- \
+"$name: rename files by changing parts of filenames that match a pattern.
+$Usage
+oldpattern and newpattern are subsets of sh filename patterns; the only
+globbing operators (wildcards) allowed are ?, *, and []. All filenames that
+match oldpattern will be renamed with the filename characters that match the
+constant (non-globbing) characters of oldpattern changed to the corresponding
+constant characters of newpattern. The characters of the filename that match
+the globbing operators of oldpattern will be preserved. Globbing operators
+in oldpattern must occur in the same order in newpattern; for every globbing
+operators in newpattern there must be an identical globbing operators in
+oldpattern in the same sequence. Both arguments should be quoted since
+globbing operators are special to the shell. If filenames are given, only
+those named are acted on; if not, all filenames that match oldpattern are acted
+on. newpattern is required in all cases except when -m is given and no further
+arguments are given.
+If you are unsure whether a $name command will do what you intend, issue it
+with the -t option first to be sure.
+Examples:
+$name \"/tmp/foo*.ba.?\" \"/tmp/new*x?\"
+ All filenames in /tmp that match foo*.ba.? will have the \"foo\" part
+ replaced by \"new\" and the \".ba.\" part replaced by \"x\".
+ For example, /tmp/fooblah.ba.baz would be renamed to /tmp/newblahxbaz.
+$name \* \*- foo bar baz
+ foo, bar, and baz will be renamed to foo-, bar-, and baz-.
+$name '????????' '????-??-??'
+ All filenames that are 8 characters long will be changed such that dashes
+ are inserted after the 4th and 6th characters.
+Options:
+-h: Print this help.
+-r: Recursive operation. Filenames given on the command line after oldpattern
+ and newpattern are taken to be directories to traverse recursively. For
+ each subdirectory found, the specified renaming is applied to any matching
+ filenames. oldpattern and newpattern should not include any directory
+ components.
+-p<pattern>, -P<pattern>: Act only on filenames that do (if -p is given) or do
+ not (if -P is given) match the sh-style filename globbing pattern
+ <pattern>. This further restricts the filenames that are acted on, beyond
+ the filename selection produced by oldpattern and the filename list (if
+ any). <pattern> must be quoted to prevent it from being interpreted by the
+ shell. Multiple instances of these options may be given. In this case,
+ filenames are acted on only if they match at least one of the patterns
+ given with -p and do not match any of the patterns given with -P.
+-m<segstart[:segend]=operation>: For each file being renamed, perform a
+ mathematical operation on the string that results from concatenating
+ together the filename segments that matched globbing operator numbers
+ segstart through segend, where operators are numbered in order of
+ occurrence from the left. For example, in the pattern a?b*c[0-9]f, segment
+ 1 consists of the character that matched ?, segment 2 consists of the
+ character(s) that matched *, and segment 3 consists of the character that
+ matched [0-9]. The selected segments are replaced with the result of the
+ mathematical operation.
+ The concatenated string must consist of characters that can be interpreted
+ as a decimal integer; if it does not, the filename is not acted on. This
+ number is assigned to the variable 'i', which can be referenced by the
+ operation. The operations available are those understood by the ksh
+ interpreter, which includes most of the operators and syntax of the C
+ language. The original filename segment is replaced by the result of the
+ operation. If -m is used, newpattern may be an empty string or not given
+ at all (if no directory/file names are given). In this case, it is taken
+ to be the same as oldpattern.
+ If segend is given, any fixed text that occurs in the pattern between the
+ starting and ending globbing segments is discarded. If there are fewer
+ globbing segments than segend, no complaint is issued; the string is formed
+ from segment segstart through the last segment that does exist.
+ If segend is not given, the only segment acted on is startseg.
+ Examples:
+ $name -m3=i+6 '??*.ppm'
+ This is equivalent to:
+ $name -m3=i+6 '??*.ppm' '??*.ppm'
+ Since the old pattern and new pattern are identical, this would
+ normally be a no-op. But in this case, if a filename of ab079.ppm is
+ given, it is changed to ab85.ppm.
+ $name '-m1:2=i*2' 'foo??bar'
+ This will change a file named foo12bar to foo24bar
+ $name '-m1:2=i*2' 'foo?xyz?bar'
+ This will also change a file named foo1xyz2bar to foo24bar
+-z<len>: Set the size of the number fields that result when -m is used. The
+ field is truncated to the trailing <len> digits or filled out to <len>
+ digits with leading zeroes. In the above example, if -z3 is given, the
+ output filename will be ab085.ppm.
+-f: Force rename. By default, $name will not rename files if a file with the
+ new filename already exists. If -f is given, $name will carry out the
+ rename anyway.
+-q: Quiet operation. By default, if -f is given, $name will still notify the
+ user if a rename results in replacement of an already-existing filename.
+ If -q is given, no notification is issued.
+-Q: Suppress other warnings. By default, a warning is issued if no files are
+ selected for acting upon. If -Q is given, no warning is issued.
+-v: Show the rename commands being executed.
+-t: Show what rename commands would be done, but do not carry them out."
+ exit 0
+ ;;
+ f)
+ check=false
+ ;;
+ q)
+ warn=false
+ ;;
+ Q)
+ warnNoFiles=false
+ ;;
+ r)
+ warnNoFiles=false
+ recurse=true
+ ;;
+ t)
+ tell=true
+ ;;
+ v)
+ verbose=true
+ ;;
+ x)
+ verbose=true
+ debug=true
+ ;;
+ p)
+ inclPats[inclCt]=$OPTARG
+ ((inclCt+=1))
+ ;;
+ P)
+ exclPats[exclCt]=$OPTARG
+ ((exclCt+=1))
+ ;;
+ m)
+ # Store operation for each segment number in ops[num]
+ # Store ending segment number in op_end_seg[num]
+ range=${OPTARG%%=*}
+ op=${OPTARG#*=}
+ start=${range%%:*}
+ end=${range#*:}
+ if [[ "$start" != +([0-9]) || "$start" -eq 0 ]]; then
+ print -ru2 -- "$name: Bad starting segment number given with -m: $start"
+ exit 1
+ fi
+ if [[ "$end" != +([0-9]) || "$end" -eq 0 ]]; then
+ print -ru2 -- "$name: Bad ending segment number given with -m: $end"
+ exit 1
+ fi
+ if [[ start -gt end ]]; then
+ print -ru2 -- "$name: Ending segment ($end) is less than starting segment ($start)"
+ exit 1
+ fi
+ if [[ "$op" != @(|*[!_a-zA-Z0-9])i@(|[!_a-zA-Z0-9]*) ]]; then
+ print -ru2 -- \
+ "$name: Operation given with -m does not reference 'i': $op"
+ exit 1
+ fi
+ # Test whether operation is legal. let returns 1 both for error
+ # indication and when last expression evaluates to 0, so evaluate 1
+ # after test expression.
+ i=1
+ let "$op" 1 2>/dev/null || {
+ print -ru2 -- \
+ "$name: Bad operation given with -m: $op"
+ exit 1
+ }
+ ops[start]=$op
+ op_end_seg[start]=$end
+ ;;
+ z)
+ if [[ "$OPTARG" != +([0-9]) || "$OPTARG" -eq 0 ]]; then
+ print -ru2 -- "$name: Bad length given with -z: $OPTARG"
+ exit 1
+ fi
+ typeset -Z$OPTARG j || exit 1
+ ;;
+ +?) # no way to tell getopts to not treat +x as an option
+ print -r -u2 "$name: Do not prefix options with '+'."
+ exit 1
+ ;;
+ :)
+ print -r -u2 \
+"$name: Option -$OPTARG requires a value.
+$Usage
+Use -h for help."
+ exit 1
+ ;;
+ \?)
+ print -r -u2 \
+"$name: -$OPTARG: no such option.
+$Usage
+Use -h for help."
+ exit 1
+ ;;
+ esac
+done
+
+# remove args that were options
+let OPTIND=OPTIND-1
+shift $OPTIND
+
+oldpat=$1
+newpat=$2
+
+# If -m is given, a non-existant or null newpat should be set to oldpat
+if [ ${#ops[*]} -gt 0 ]; then
+ case $# in
+ 0)
+ ;;
+ 1)
+ set -- "$oldpat" "$oldpat"
+ newpat=$oldpat
+ $debug && print -ru2 -- "Set new pattern to: $newpat"
+ ;;
+ *)
+ if [ -z "$newpat" ]; then
+ shift 2
+ set -- "$oldpat" "$oldpat" "$@"
+ newpat=$oldpat
+ $debug && print -ru2 -- "Set new pattern to: $newpat"
+ fi
+ ;;
+ esac
+fi
+
+# Make sure input patterns that contain whitespace can be expanded properly
+IFS=
+
+origPat=$oldpat
+
+# Generate list of filenames to act on.
+case $# in
+[01])
+ print -u2 "$Usage\nUse -h for help."
+ exit 1
+ ;;
+2)
+ if $recurse; then
+ print -r -u2 "$name: No directory names given with -r. Use -h for help."
+ exit 1
+ fi
+ set -- $oldpat # Get list of all filenames that match 1st globbing pattern.
+ if [[ ! -a $1 ]]; then
+ $warnNoFiles && print -r -- "$name: No filenames match this pattern: $oldpat"
+ exit
+ fi
+ ;;
+*)
+ shift 2
+ ;;
+esac
+
+integer patSegNum=1 numPatSegs
+
+# For old ksh
+# while [[ "$oldpat" = *'[\*\?]'* ]]; do
+
+# Example oldpat: foo*.a
+# Example newpat: bar*.b
+
+# Build list of non-pattern segments and globbing segments found in arguments.
+# Note the patterns given are used to get the list of filenames to act on,
+# to delimit constant segments, and to determine which parts of filenames are
+# to be replaced.
+# Examples given for first iteration (in the example, the only iteration)
+# The || newpat is to ensure that new pattern does not have more globbing
+# segments than old pattern
+while [[ "$oldpat" = *@([\*\?]|\[+([!\]])\])* ||
+ "$newpat" = *@([\*\?]|\[+([!\]])\])* ]]; do
+ ## Get leftmost globbing pattern in oldpat
+
+ # Make r be oldpat with smallest left piece that includes a globbing
+ # pattern removed from it
+ r=${oldpat#*@([\*\?]|\[+([!\]])\])} # r=.a
+ # Make pat be oldpat with the above removed from it, leaving smallest
+ # left piece that includes a globbing pattern
+ pat=${oldpat%%"$r"} # pat=foo*
+ # Make l be pat with the globbing pattern removed from the right,
+ # leaving a constant string
+ l=${pat%@([\*\?]|\[+([!\]])\])} # l=foo
+ # Remove the constant part of pat from the left, leaving the globbing
+ # pattern
+ pat=${pat#"$l"} # pat=*
+
+ # Do the same thing for newpat, solely to provide a reliable test that
+ # both oldpat & newpat contain exactly the same sequence of globbing
+ # patterns.
+ r=${newpat#*@([\*\?]|\[+([!\]])\])} # r=.b
+ npat=${newpat%%"$r"} # pat=bar*
+ l=${npat%@([\*\?]|\[+([!\]])\])} # l=bar
+ npat=${npat#"$l"} # npat=*
+
+ if [[ "$pat" != "$npat" ]]; then
+ print -ru2 -- \
+"$name: Old-pattern and new-pattern do not have the same sequence of globbing chars.
+Pattern segment $patSegNum: Old pattern: $pat New pattern: $npat"
+ exit 1
+ fi
+
+ ## Find parts before & after pattern
+ # oldpre[] stores the old constant part before the pattern,
+ # so that it can be removed and replaced with the new constant part.
+ oldpre[patSegNum]=${oldpat%%"$pat"*} # oldpre[1]=foo
+ # oldsuf stores the part that follows the globbing pattern,
+ # so that it too can be removed.
+ # After oldpre[] & oldsuf[] have been removed from a filename, what remains
+ # is the part matched by the globbing pattern, which is to be retained.
+ oldsuf[patSegNum]=${oldpat#*"$pat"} # oldsuf[1]=.a
+ # newpre[] stores the new constant part before the pattern,
+ # so that it can be used to replace the old constant part.
+ newpre[patSegNum]=${newpat%%"$pat"*} # newpre[1]=bar
+ # Get rid of processed part of patterns
+ oldpat=${oldpat#${oldpre[patSegNum]}"$pat"} # oldpat=.a
+ newpat=${newpat#${newpre[patSegNum]}"$pat"} # newpat=.b
+ # Store either * or ? in pats[], depending on whether this segment matches 1
+ # or any number of characters.
+ [[ "$pat" = \[* ]] && pat=?
+ pats[patSegNum]=$pat
+ ((patSegNum+=1))
+done
+
+if [ patSegNum -eq 1 ]; then
+ print -u2 "No globbing chars in pattern."
+ exit 1
+fi
+
+oldpre[patSegNum]=${oldpat%%"$pat"*} # oldpre[2]=.a
+oldsuf[patSegNum]=${oldpat#*"$pat"} # oldsuf[2]=.a
+newpre[patSegNum]=${newpat%%"$pat"*} # newpre[2]=.b
+
+numPatSegs=patSegNum
+
+if $debug; then
+ patSegNum=1
+ while [[ patSegNum -le numPatSegs ]]; do
+ print -ru2 -- \
+"Old prefix: <${oldpre[patSegNum]}> Old suffix: <${oldsuf[patSegNum]}> New prefix: <${newpre[patSegNum]}> Pattern: <${pats[patSegNum]}>"
+ ((patSegNum+=1))
+ done
+fi
+
+# Example filename: foox.a
+# Example oldpat: foo*.a
+# Example newpat: bar*.b
+
+integer numFiles=0
+
+# Usage: renameFile filename [dirname]
+# [dirname] is a directory name to prefix filenames with when they are printed
+# for informational purposes.
+# Uses globals:
+# inclCt exclCt inclPats[] exclPats[] ops[]
+# numPatSegs oldpre[] oldsuf[] newpre[] pats[]
+# check warn tell verbose name
+# Modifies globals: numFiles
+function renameFile {
+ typeset file=$1 subdir=$2
+ integer patSegNum patnum
+ typeset origname porigname newfile matchtext pnewfile matchsegs
+ integer startseg endseg
+
+ origname=$file # origname=foox.a
+ porigname=$subdir$file
+ # Unfortunately, ksh88 does not do a good job of allowing for patterns
+ # stored in variables. Without the conditional expression being eval'ed,
+ # only sh patterns are recognized. If the expression is eval'ed, full
+ # ksh expressions can be used, but then expressions that contain whitespace
+ # break unless the user passed a pattern with the whitespace properly
+ # quoted, which is not intuititive. This is fixed in ksh93; full patterns
+ # work without being eval'ed.
+ if [ inclCt -gt 0 ]; then
+ patnum=0
+ while [ patnum -lt inclCt ]; do
+ [[ "$file" = ${inclPats[patnum]} ]] && break
+ ((patnum+=1))
+ done
+ if [ patnum -eq inclCt ]; then
+ $debug && print -ru2 -- "Skipping not-included filename '$porigname'"
+ return 1
+ fi
+ fi
+ patnum=0
+ while [ patnum -lt exclCt ]; do
+ if [[ "$file" = ${exclPats[patnum]} ]]; then
+ $debug && print -ru2 -- "Skipping excluded filename '$porigname'"
+ return 1
+ fi
+ ((patnum+=1))
+ done
+ # Extract matching segments from filename
+ ((numFiles+=1))
+ patSegNum=1
+ while [[ patSegNum -le numPatSegs ]]; do
+ # Remove a fixed prefix iteration: 1 2
+ file=${file#${oldpre[patSegNum]}} # file=x.a file=
+ # Save the part of this suffix that is to be retained. To do this, we
+ # need to know what part of the suffix matched the current globbing
+ # segment. If the globbing segment is a *, this is done by removing
+ # the minimum part of the suffix that matches oldsuf (since * matches
+ # the longest segment possible). If the globbing segment is ? or []
+ # (the latter has already been coverted to ?), it is done by taking the
+ # next character.
+ if [ "${pats[patSegNum]}" == \? ]; then
+ matchtext=${file#?}
+ matchtext=${file%$matchtext}
+ else
+ matchtext=${file%${oldsuf[patSegNum]}} # matchtext=x matchtext=
+ fi
+ $debug && print -ru2 -- "Matching segment $patSegNum: $matchtext"
+ file=${file#$matchtext} # file=.a file=.a
+
+ matchsegs[patSegNum]=$matchtext
+ ((patSegNum+=1))
+ done
+
+ # Paste fixed and matching segments together to form new filename.
+ patSegNum=0
+ newfile=
+ while [[ patSegNum -le numPatSegs ]]; do
+ matchtext=${matchsegs[patSegNum]}
+ startseg=patSegNum
+ if [ -n "${ops[startseg]}" ]; then
+ endseg=${op_end_seg[startseg]}
+ while [ patSegNum -lt endseg ]; do
+ ((patSegNum+=1))
+ matchtext=$matchtext${matchsegs[patSegNum]}
+ done
+ if [[ "$matchtext" != +([-0-9]) ]]; then
+ print -ru2 -- \
+"Segment(s) $startseg - $endseg ($matchtext) of file '$porigname' do not form an integer; skipping this file."
+ return 2
+ fi
+ i=$matchtext
+ let "j=${ops[startseg]}" || {
+ print -ru2 -- \
+"Operation failed on segment(s) $startseg - $endseg ($matchtext) of file '$file'; skipping this file."
+ return 2
+ }
+ $debug && print -ru2 -- "Converted $matchtext to $j"
+ matchtext=$j
+ fi
+ newfile=$newfile${newpre[startseg]}$matchtext # newfile=barx newfile=barx.b
+ ((patSegNum+=1))
+ done
+
+ pnewfile=$subdir$newfile
+ if $check && [ -e "$newfile" ]; then
+ $warn &&
+ print -ru2 -- "$name: Not renaming \"$porigname\"; destination filename \"$pnewfile\" already exists."
+ return 2
+ fi
+ if $tell; then
+ print -n -r -- "Would move: $porigname -> $pnewfile"
+ $warn && [ -e "$newfile" ] && print -n -r " (destination filename already exists; would replace it)"
+ print ""
+ else
+ if $verbose; then
+ print -n -r -- "Moving: $porigname -> $pnewfile"
+ $warn && [ -e "$newfile" ] && print -n -r -- " (replacing old destination filename \"$pnewfile\")"
+ print ""
+ elif $warn && [ -e "$newfile" ]; then
+ print -r -- "$name: Note: Replacing old file \"$pnewfile\""
+ fi
+ mv -f -- "$origname" "$newfile"
+ fi
+}
+
+if $recurse; then
+ oPWD=$PWD
+ find "$@" -depth -type d ! -name '*
+*' -print | while read dir; do
+ cd -- "$oPWD"
+ if cd -- "$dir"; then
+ for file in $origPat; do
+ renameFile "$file" "$dir/"
+ done
+ else
+ print -ru2 -- "$name: Could not access directory '$dir' - skipped."
+ fi
+ done
+else
+ for file; do
+ renameFile "$file"
+ done
+fi
+
+if [ numFiles -eq 0 ]; then
+ $warnNoFiles && print -ru2 -- \
+ "$name: All filenames were excluded by patterns given with -p or -P."
+fi
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# @(#) rename.ksh 1.1 94/05/10
+# 90/06/01 John DuBois (spcecdt@armory.com)
+# 91/02/25 Improved help info
+# 92/06/07 remove quotes from around shell pattern as required by new ksh
+# 94/05/10 Exit if no globbing chars given.
+#
+# conversion to bash v2 syntax by Chet Ramey
+
+phelp()
+{
+echo "$usage
+All files that match oldpattern will be renamed with the
+filename components that match the constant parts of oldpattern
+changed to the corresponding constant parts of newpattern.
+The components of the filename that match variable parts of
+oldpattern will be preserved. Variable parts in oldpattern
+must occur in the same order in newpattern. Variables parts
+can be '?' and '*'.
+Example:
+rename \"/tmp/foo*.ba.?\" \"/tmp/new*x?\"
+All files in /tmp that match foo*.ba.? will have the \"foo\" part
+replaced by \"new\" and the \".ba.\" part replaced by \"x\"."
+}
+
+usage="usage: $name [-htv] oldpattern newpattern"
+name=${0##/}
+
+while getopts "htv" opt; do
+ case "$opt" in
+ t) tell=true;;
+ v) verbose=true;;
+ h) phelp; exit 0;;
+ *) echo "$name: $usage" 1>&2; exit 2;;
+ esac
+done
+shift $((OPTIND - 1))
+
+if [ $# -lt 2 ]; then
+ phelp
+ exit 2
+fi
+
+oldpat=$1
+newpat=$2
+
+set -- $1
+if [ ! -e "$1" ]; then
+ echo "$name: no files match $oldpat."
+ exit 1
+fi
+
+typeset -i i=1 j
+
+# Example oldpat: foo*.a
+# Example newpat: bar*.b
+
+# Examples given for first iteration (in the example, the only interation)
+while :; do
+ case "$oldpat" in
+ *[\*\?]*) ;;
+ *) break;;
+ esac
+
+ # Get leftmost globbing pattern in oldpat
+ pat=${oldpat#*[\*\?]} # pat=.a
+ pat=${oldpat%%"$pat"} # pat=foo*
+ pat=${pat##*[!\?\*]} # pat=*
+ # Find parts before & after pattern
+ oldpre[i]=${oldpat%%"$pat"*} # oldpre[1]=foo
+ oldsuf[i]=${oldpat#*"$pat"} # oldsuf[1]=.a
+ newpre[i]=${newpat%%"$pat"*} # newpre[1]=bar
+ # Get rid of processed part of patterns
+ oldpat=${oldpat#${oldpre[i]}"$pat"} # oldpat=.a
+ newpat=${newpat#${newpre[i]}"$pat"} # newpat=.b
+ let i=i+1
+done
+
+if [ $i -eq 1 ]; then
+ echo "No globbing chars in pattern." 1>&2
+ exit 1
+fi
+
+oldpre[i]=${oldpat%%"$pat"*} # oldpre[2]=.a
+oldsuf[i]=${oldpat#*"$pat"} # oldsuf[2]=.a
+newpre[i]=${newpat%%"$pat"*} # newpre[2]=.b
+
+if [ -n "$verbose" ]; then
+ j=1
+ while let "j < i"; do
+ echo \
+"Old prefix: ${oldpre[j]} Old suffix: ${oldsuf[j]} New prefix: ${newpre[j]}"
+ let j=j+1
+ done
+fi
+
+# Example file: foox.a
+
+for file; do
+ j=1
+ origname=$file # origname=foox.a
+ newfile=
+ while let "j <= i"; do
+ # Peel off a prefix interation 1 2
+ file=${file#${oldpre[j]}} # file=x.a file=
+ # Save the part of this prefix that is to be retained
+ const=${file%${oldsuf[j]}} # const=x const=
+ newfile=$newfile${newpre[j]}$const # newfile=barx newfile=barx.b
+ file=${file#$const} # file=.a file=.a
+ let j=j+1
+ done
+ if [ -n "$tell" ]; then
+ echo "Would move \"$origname\" to \"$newfile\"."
+ else
+ if [ -n "$verbose" ]; then
+ echo "Moving \"$origname\" to \"$newfile\"."
+ fi
+ mv $origname $newfile
+ fi
+done
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# repeat: repeat a command.
+# @(#) repeat.ksh 1.1 93/06/03
+# 90/05 john h. dubois iii (john@armory.com)
+# 90/11 added help
+# 93/06/03 Added s, h, p, and v options
+#
+# conversion to bash v2 syntax done by Chet Ramey
+
+istrue()
+{
+ test 0 -ne "$1"
+}
+
+isfalse()
+{
+ test 0 -eq "$1"
+}
+
+phelp()
+{
+echo "$name: repeatedly execute a command line.
+$Usage
+commandline is executed once for each integer from startcount through endcount
+inclusive. The default for startcount is 1 if a positive endcount or no
+endcount is given, and -1 if a negative endcount is given. A count
+parameter consisting of a single number is taken to be an endcount. If
+only an endcount is given and it is positive, commandline is executed
+endcount times. endcount may be less than startcount. If no endcount is
+given (e.g. a count parameter of \"10-\"), commandline execution repeats
+indefinitely with the iteration variable incrementing in a positive
+direction. A count parameter of consisting of \"-\" will repeat
+indefinitely starting with 1.
+
+Note that quoting and variables in commandline are interpreted twice, once
+when it is passed to the repeat command, and once when it is actually executed.
+
+The iteration variable is \"count\". If \$count is used in commandline, make
+sure it is quoted with ' or \.
+
+Options:
+-h: Print this help.
+-p: Print value of iteration variable on stderr before each iteration.
+-s <sec>: sleep for <sec> seconds after each iteration except the last.
+-v: Print start and end values before beginning."
+}
+
+name=${0##*/}
+Usage="Usage: repeat [-hpv] [-s <sec>] [[startcount]-][endcount] command [arg ...]"
+
+typeset -i count=1 forever=0 sleep=0 print=0 verbose=0
+
+while getopts :0123456789hpvs: opt; do
+ case $opt in
+ h) phelp; exit 0;;
+ s) sleep=$OPTARG || exit 1;;
+ p) print=1;;
+ v)verbose=1;;
+ [0-9]) break;;
+ +?) echo "$name: options should not be preceded by a '+'." 1>&2; exit 2;;
+ ?) echo "$name: $OPTARG: bad option. Use -h for help." 1>&2; exit 2;;
+ esac
+done
+
+# remove args that were options
+shift $((OPTIND-1))
+
+if [ $# -lt 2 ]; then
+ echo -e "$Usage\nUse -h for help." 1>&2
+ exit 2
+fi
+
+case "$1" in
+-[0-9]*-|[0-9]*-)
+ # Start value only
+ count=${1%-}
+ forever=1
+ end="-1";
+ ;;
+-[0-9]*-[0-9]*|[0-9]*-[0-9]*)
+ # Start and end value
+ s=${1%-}
+ end=${s##[0-9]*-}
+ count=${s%-$end}
+ ;;
+-[0-9]*|[0-9]*)
+ end=$1
+ case "$end" in
+ -\*) count=-1;;
+ esac
+ ;;
+-)
+ forever=1
+ end="-1";
+ ;;
+*)
+ echo "$name: bad count parameter: $1" 1>&2
+ exit 1
+ ;;
+esac
+
+shift
+
+[ -z "$end" ] && [ $count -le "$end" ] && increment=1 || increment=-1
+
+istrue $verbose && echo "start=$count end=$end" 1>&2
+
+# Need to do this here so that up to this point, -0 will keep the leading -
+# and end will not be 0 if no value assigned
+typeset -i end
+
+let end+=increment # make loop inclusive of original endcount
+
+while istrue $forever || [ $count -ne $end ]; do
+ istrue $print && echo $count 1>&2
+ eval "$@"
+ istrue $sleep && sleep $sleep
+ let count+=increment
+done
--- /dev/null
+#! /bin/bash
+#
+# shprof - a line profiler for shell scripts
+#
+# adapted from a similar program included in `The New KornShell' by
+# Bolsky and Korn and posted to usenet by bsh20858@challenger.fhda.edu
+#
+# converted to bash v2 syntax by Chet Ramey
+#
+TMPFILE=${TMP:-/tmp}/shprof$$
+
+trap 'rm -f $TMPFILE' EXIT
+
+errexit()
+{
+ echo $0: "$@" >&2
+ exit 1
+}
+
+# create script with profiling enabled
+cat > $TMPFILE <<- \_EOF_
+ declare -a _line
+ _profend()
+ {
+ case "$1" in
+ /*|./*) file="$1" ;;
+ *) file=$(type -path "$1") ;;
+ esac
+
+ echo "*** line profile for $file ***"
+ i=1;
+ while read -r && [ $i -le $NLINE ]; do
+ count=${_line[$i]}
+ if [ "$count" -gt 0 ]; then
+ echo "[$count] $i: $REPLY"
+ fi
+ i=$((i + 1))
+ done <$file
+_EOF_
+# make the profiling script remove itself after printing line stats
+echo "rm -f $TMPFILE" >> $TMPFILE
+cat >> $TMPFILE <<- \_EOF_
+ }
+ _command=$1
+ shift
+ i=1
+ NLINE=$(wc -l < "$_command")
+ while [ $i -le $NLINE ]; do
+ _line[$i]=0
+ i=$((i + 1))
+ done
+ unset i
+ trap "_profend ${_command}" EXIT
+ trap '_line[$LINENO]=$((${_line[$LINENO]} + 1))' DEBUG
+ LINENO=0
+_EOF_
+
+case "$1" in
+/*|./*) file=$1 ;;
+*) file=$((type -path "$1")) ;;
+esac
+
+cat "${file-$1}" >> $TMPFILE || errexit "${1}: cannot open"
+chmod +x $TMPFILE
+
+exec -a "$file" $TMPFILE "$@"
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# @(#) untar.ksh 1.0 93/11/10
+# 92/10/08 john h. dubois iii (john@armory.com)
+# 92/10/31 make it actually work if archive isn't in current dir!
+# 93/11/10 Added pack and gzip archive support
+#
+# conversion to bash v2 syntax done by Chet Ramey
+
+phelp()
+{
+echo \
+"$name: extract tar archives into directories, uncompressing if neccessary.
+Usage: $name archive[.tar[.[Z|gz]]] ..
+If an archive name given does not end in .tar, .tar.Z, or .tar.gz, it is
+searched for first with .tar added, then .tar.Z, and then .tar.gz added.
+The real filename must end in either .tar, .tar.Z, or .tar.gz. A
+directory with the name of the archive is created in the current directory
+(not necessarily the directory that the archive is in) if it does not
+exist, and the the contents of the archive are extracted into it.
+Absolute pathnames in tarfiles are suppressed."
+}
+
+if [ $# -eq 0 ]; then
+ phelp
+ exit 1
+fi
+
+name=${0##/}
+OWD=$PWD
+
+for file; do
+ cd $OWD
+ case "$file" in
+ *.tar.Z) ArchiveName=${file%%.tar.Z} zcat=zcat;;
+ *.tar.z) ArchiveName=${file%%.tar.z} zcat=pcat;;
+ *.tar.gz) ArchiveName=${file%%.tar.gz} zcat=gzcat;;
+ *) ArchiveName=$file
+ for ext in "" .Z .z .gz; do
+ if [ -f "$file.tar$ext" ]; then
+ file="$file.tar$ext"
+ break
+ fi
+ done
+ if [ ! -f "$file" ]; then
+ echo "$file: cannot find archive." 1>&2
+ continue
+ fi
+ ;;
+ esac
+ if [ ! -r "$file" ]; then
+ echo "$file: cannot read." >&2
+ continue
+ fi
+ DirName=${ArchiveName##*/}
+ [ -d "$DirName" ] || {
+ mkdir "$DirName" || {
+ echo "$DirName: could not make archive directory." 1>&2
+ continue
+ }
+ }
+
+ cd $DirName || {
+ echo "$name: cannot cd to $DirName" 1>&2
+ continue
+ }
+
+ case "$file" in
+ /*) ;;
+ *) file=$OWD/$file ;;
+ esac
+
+ echo "Extracting archive $file into directory $DirName..."
+ case "$file" in
+ *.tar.Z|*.tar.z|*.tar.gz) $zcat $file | tar xvf -;;
+ *.tar) tar xvf $file;;
+ esac
+ echo "Done extracting archive $file into directory $DirName."
+done
--- /dev/null
+:
+# @(#) uudec.sh 1.0 93/11/22
+# 92/08/04 john@armory.com (John H. DuBois III)
+# 93/11/22 Added help.
+
+isfalse()
+{
+ test 0 -eq "$1"
+}
+
+phelp()
+{
+"$name: process uuencoded files.
+Usage: uudec [-h] filename ...
+Options:
+-h: Print this help."
+}
+
+name=${0##*/}
+
+typeset -i force=0
+
+while getopts "hf" opt; do
+ case "$opt" in
+ h) phelp; exit 0;;
+ f) force=1;;
+ *) echo "$Usage" 1>&2; exit 2;;
+ esac
+done
+
+shift $((OPTIND - 1))
+
+for file; do
+ echo "$file"
+ while read b mode filename && [ "$b" != begin ]; do :; done < "$file"
+ if [ "$b" = begin ]; then
+ if [ -f "$filename" ] && isfalse $force; then
+ echo "Output file \"$filename\" exists. Not written."
+ else
+ uudecode "$file"
+ fi
+ else
+ echo "No begin line."
+ fi
+done
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# @(#) uuenc.ksh 1.0 93/09/18
+# 93/09/18 john h. dubois iii (john@armory.com)
+#
+# conversion to bash v2 syntax by Chet Ramey
+
+istrue()
+{
+ test 0 -ne "$1"
+}
+
+isfalse()
+{
+ test 0 -eq "$1"
+}
+
+phelp()
+{
+echo "$name: uuencode files.
+$Usage
+For each filename given, $name uuencodes the file, using the final
+component of the file's path as the stored filename in the uuencoded
+archive and, with a .${SUF} appended, as the name to store the archive in.
+Example:
+$name /tmp/foo
+The file /tmp/foo is uuencoded, with \"foo\" stored as the name to uudecode
+the file into, and the output is stored in a file in the current directory
+with the name \"foo.${SUF}\".
+Options:
+-f: Normally, if the file the output would be stored in already exists,
+ it is not overwritten and an error message is printed. If -f (force)
+ is given, it is silently overwritten.
+-h: Print this help."
+}
+
+name=${0##*/}
+Usage="Usage: $name [-hf] <filename> ..."
+typeset -i force=0
+
+SUF=uu
+
+while getopts :hf opt; do
+ case $opt in
+ h) phelp; exit 0;;
+ f) force=1;;
+ +?) echo "$name: options should not be preceded by a '+'." 1>&2 ; exit 2;;
+ ?) echo "$name: $OPTARG: bad option. Use -h for help." 1>&2 ; exit 2;;
+ esac
+done
+
+# remove args that were options
+shift $((OPTIND - 1))
+
+if [ $# -lt 1 ]; then
+ echo "$Usage\nUse -h for help." 1>&2
+ exit
+fi
+
+for file; do
+ tail=${file##*/}
+ out="$tail.${SUF}"
+ if isfalse $force && [ -a "$out" ]; then
+ echo "$name: $out: file exists. Use -f to overwrite." 1>&2
+ else
+ uuencode $file $tail > $out
+ fi
+done
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# vtree: visual directory tree
+# @(#) vtree.sh 1.1 91/07/01
+# 90/04 john h. dubois iii (john@armory.com)
+# 91/07/01 fixed bug that caused problems when dir given on command line,
+# added some info to help, changed to 4-space indenting
+#
+# conversion to bash v2 syntax done by Chet Ramey
+#
+help=\
+"Syntax: vtree [startdir] [namelen=#] [linelen=#]
+If startdir is not specified, tree will start at current dir.
+
+namelen specifies the minimum number of characters of a directory name that
+are guaranteed to be printed.
+This is a tradeoff between the number of tree levels that can fit on a
+screen line and the number of chars of each dir name that can be printed.
+In most cases it will be possible to print more than namelen characters of
+the name (a name up to namelen+1 chars will always be printed in full),
+but in some cases truncation down to namelen chars will occur.
+If truncation occurs, a '>' is printed at the end of the name.
+namelen=8 (the default) typically causes about 5 dirs/1000 to be truncated.
+namelen=7 typically causes about 10 dirs/1000 to be truncated.
+namelen=8 will allow 6 full length dirs to be printed in 79 columns.
+namelen=7 will allow 7 full length dirs to be printed in 79 columns;
+
+linelen specifies the maximum number of characters to print on one screen
+line. All characters beyond this are truncated. The default is 1024.
+To avoid line wrap on an 80 column terminal with autowrap, use linelen=79.
+"
+
+for i in "$@"; do
+ case $i in
+ -h) echo "$help"; exit;;
+ *=*)
+ vars="$vars $i"
+ ;;
+ *)
+ if [ ! -x $i ] || [ ! -d $i ]; then # arg must be a dir and executable
+ echo "$i: directory not accessible."
+ exit
+ fi
+ cd $i
+ ;;
+ esac
+ shift
+done
+
+pwd # print path of root of tree
+
+# find all directories depth first; ignore permission errors
+find . -type d -print 2> /dev/null | \
+gawk -F/ '
+
+# Do this block for NR == 1 instead of BEGIN because command line var
+# assignments are not done until after BEGIN block is executed.
+NR == 1 {
+ if (namelen)
+ MaxLen = namelen;
+ else
+ MaxLen = 8;
+ if (!linelen)
+ linelen = 1024
+ HSpace = substr(" ",1,MaxLen); # used to indent tree
+ n = 0; # number of dirs found on one major branch
+}
+
+$0 != "." { # do for every line produced by find except tree root dir
+ if (NF == 2 && n > 0) # print major branch whenever a new one starts
+ list();
+ Depth[n] = NF - 1; # record depth and name of dir
+ Name[n++] = $NF;
+}
+
+END {
+ list() # print last major branch
+}
+
+function list() {
+ Line = Name[0]; # initialize first line of branch to be branch base
+ for (i = 1; i < n; i++) { # for each name in major branch
+ if (Depth[i] == Depth[i-1] + 1)
+ AddHLink(); # if moving deeper into branch, use same line
+ else {
+ print substr(Line,1,linelen); # last line is done; print it
+ Line = ""; # start new line
+ # print indentation, vert links, and vert/horiz links
+ for (d = 1; d < Depth[i] - 1; d++) # for each level of indentation
+ # if a vert. link has been established for this level
+ if (VLink[d])
+ Line = Line HSpace " | ";
+ else # print empty indentation
+ Line = Line HSpace " ";
+ # Print last part of vert. link
+ if (VLink[d] == i) {
+ VLink[d] = 0; # mark level for no vert link
+ Line = Line HSpace " \\--";
+ }
+ else
+ Line = Line HSpace " |--";
+ }
+ Line = Line Name[i]; # Add dir name to line
+ }
+ print substr(Line,1,linelen); # print last line of major branch
+ n = 0; # reset name counter
+}
+
+function AddHLink() {
+ NDepth = Depth[i]; # Depth of this name
+ VLink[NDepth - 1] = 0;
+ # search until a name found at a level less than this one
+ for (j = i + 1; j < n && Depth[j] >= NDepth; j++)
+ # keep track of last name that VLink should connect to
+ if (Depth[j] == NDepth)
+ VLink[NDepth - 1] = j;
+ if (VLink[NDepth - 1]) {
+ NLine = substr(Line,1,(NDepth - 2) * (MaxLen + 4) + MaxLen + 1);
+ if (length(NLine) < length(Line))
+ Line = substr(NLine,1,length(NLine) - 1) ">"
+ else
+ Line = NLine;
+ Line = Line substr("--------------+--",
+ 18 - ((NDepth - 1) * (MaxLen + 4) - length(Line)));
+ }
+ else {
+ NLine = substr(Line,1,(NDepth - 2) * (MaxLen + 4) + MaxLen + 3);
+ if (length(NLine) < length(Line))
+ Line = substr(NLine,1,length(NLine) - 1) ">"
+ else
+ Line = NLine;
+ Line = Line substr("-----------------",
+ 1,(NDepth - 1) * (MaxLen + 4) - length(Line));
+ }
+}
+' $vars
--- /dev/null
+#! /bin/bash
+#
+# original from:
+# @(#) where.ksh 1.1 94/07/11
+# 91/01/12 john h. dubois iii (john@armory.com)
+# 92/08/10 Only print executable *files*.
+# 92/10/06 Print err msg if no match found.
+# 92/11/27 Added implicit *
+# 93/07/23 Print help only if -h is given.
+# 94/01/01 Added -x option
+# 94/07/11 Don't bother with eval
+#
+# conversion to bash v2 syntax done by Chet Ramey
+
+name=${0##*/}
+Usage="Usage: $name [-hx] 'pattern' ..."
+typeset -i exact=0
+
+phelp()
+{
+echo "$name: find executable files in PATH that match patterns.
+$Usage
+$name searches each directory specified in the PATH environment variable
+for executable files that match the specified patterns. Patterns are
+given as Korn shell filename patterns. They are surrounded by implicit
+'*' characters, so that \"foo\" will match any executble file whose name
+contains contains \"foo\". This can be overridden by using '^' and '$' to
+force a match to start at the beginning and end at the end of a filename
+respectively. Characters that are special to the shell must generally
+be protected from the shell by surrounding them with quotes.
+Examples:
+$name foo
+lists all executable files in PATH that contain foo.
+$name '^b*sh$'
+lists all executable files in PATH that start with b and end with sh.
+An error message is printed if a no matching file is found for a pattern.
+Options:
+-h: Print this help.
+-x: Find exact matches only; equivalent to putting ^ and $ at the start
+ and end of each pattern."
+}
+
+istrue()
+{
+ test 0 -ne "$1"
+}
+
+isfalse()
+{
+ test 0 -eq "$1"
+}
+
+while getopts "xh" opt; do
+ case "$opt" in
+ x) exact=1;;
+ h) phelp ; exit 0;;
+ *) echo -e "$Usage\nUse -h for help." 1>&2; exit 2;;
+ esac
+done
+
+shift $((OPTIND-1))
+
+set +f # make sure filename globbing is on
+Args=("$@") # save args
+
+OIFS=$IFS
+IFS=: # Make PATH be split on :
+Paths=($PATH)
+IFS=$OIFS
+
+for arg in "${Args[@]}"; do
+
+ # get rid of leading ^
+ if istrue $exact; then
+ arg=${arg}
+ else
+ case "$arg" in
+ ^*) arg=${arg#?};;
+ *) arg="*$arg" ;; # Pattern is not anchored at start
+ esac
+ fi
+
+ # get rid of trailing $
+ if istrue $exact; then
+ arg="$arg"
+ else
+ case "$arg" in
+ *\$) arg=${arg%?} ;;
+ *) arg="$arg*" ;;
+ esac
+ fi
+
+ found=0 # Pattern not found yet
+ Patterns=
+ # Make a pattern for each element of PATH
+ for PathElem in "${Paths[@]}"; do
+ [ -z "$PathElem" ] && PathElem=.
+ Patterns="$Patterns $PathElem/$arg"
+ done
+
+ # Find all pattern matches that are executable regular files.
+ for file in $Patterns; do
+ if [ -x "$file" ] && [ -f "$file" ]; then
+ echo "$file"
+ found=1
+ fi
+ done
+ if [ $found = 0 ]; then
+ echo "$arg: not found." 1>&2
+ fi
+done
--- /dev/null
+#!/bin/bash
+# ash -- "Adventure shell"
+# last edit: 86/04/21 D A Gwyn
+# SCCS ID: @(#)ash.sh 1.4
+
+OPATH=$PATH
+
+ask()
+{
+ echo -n "$@" '[y/n] '
+ read ans
+
+ case "$ans" in
+ y*|Y*)
+ return 0
+ ;;
+ *)
+ return 1
+ ;;
+ esac
+}
+
+CAT=${PAGER:-more}
+
+ash_inst()
+{
+ cat <<- EOF
+
+ Instructions for the Adventure shell
+
+ Welcome to the Adventure shell! In this exploration of the UNIX file
+ system, I will act as your eyes and hands. As you move around, I will
+ describe whatever is visible and will carry out your commands. The
+ general form of a command is
+ Verb Object Extra_stuff.
+ Most commands pay no attention to the "Extra_stuff", and many do not
+ need an "Object". A typical command is
+ get all
+ which picks up all files in the current "room" (directory). You can
+ find out what you are carrying by typing the command
+ inventory
+ The command "help" results in a full description of all commands that I
+ understand. To quit the Adventure shell, type
+ quit
+
+ There are UNIX monsters lurking in the background. These are also
+ known as "commands with arguments".
+
+ Good luck!
+ EOF
+}
+
+ash_help()
+{
+echo "I understand the following commands (synonyms in parentheses):"
+echo ""
+
+echo "change OBJECT to NEW_NAME changes the name of the object"
+echo "clone OBJECT as NEW_NAME duplicates the object"
+echo "drop OBJECTS leaves the objects in the room"
+echo "enter (go) PASSAGE takes the labeled passage"
+echo "examine OBJECTS describes the objects in detail"
+echo "feed OBJECT to MONSTER stuffs the object into a UNIX monster"
+echo "get (take) OBJECTS picks up the specified objects"
+echo "gripe (bug) report a problem with the Adventure shell"
+echo "help prints this summary"
+echo "inventory (i) tells what you are carrying"
+echo "kill (destroy) OBJECTS destroys the objects"
+echo "look (l) describes the room, including hidden objects"
+echo "open (read) OBJECT shows the contents of an object"
+echo "quit (exit) leaves the Adventure shell"
+echo "resurrect OBJECTS attempts to restore dead objects"
+echo "steal OBJECT from MONSTER obtains the object from a UNIX monster"
+echo "throw OBJECT at daemon feeds the object to the printer daemon"
+echo "up takes the overhead passage"
+echo "wake MONSTER awakens a UNIX monster"
+echo "where (w) tells you where you are"
+echo "xyzzy moves you to your home"
+}
+
+MAINT=chet@ins.cwru.edu
+
+PATH=/usr/ucb:/bin:/usr/bin:/usr/local/bin:.
+export PATH
+
+trap 'echo Ouch!' 2 3
+#trap '' 18 # disable Berkeley job control
+
+#ash_lk(){ echo " $1 " | fgrep " $2 " >&- 2>&-; }
+ash_lk(){ echo " $1 " | fgrep -q " $2 " >/dev/null 2>&1 ; }
+ash_pr(){ echo $* | tr ' ' '\012' | pr -5 -t -w75 -l$(( ( $# + 4 ) / 5 )); }
+ash_rm(){ echo " $1 " | sed -e "s/ $2 / /" -e 's/^ //' -e 's/ $//'; }
+
+# enable history, bang history expansion, and emacs editing
+set -o history
+set -o histexpand
+set -o emacs
+
+cd
+LIM=.limbo # $HOME/$LIM contains "destroyed" objects
+mkdir $LIM || {
+ echo "ash: cannot mkdir $LIM: exiting"
+ exit 1
+}
+KNAP=.knapsack # $HOME/$KNAP contains objects being "carried"
+if [ ! -d $KNAP ]
+then mkdir $KNAP >/dev/null 2>&1
+ if [ $? = 0 ]
+ then echo 'You found a discarded empty knapsack.'
+ else echo 'You have no knapsack to carry things in.'
+ exit 1
+ fi
+else echo 'One moment while I peek in your old knapsack...'
+fi
+
+kn=`echo \`ls -a $KNAP | sed -e '/^\.$/d' -e '/^\.\.$/d'\``
+
+if ask 'Welcome to the Adventure shell! Do you need instructions?'
+then
+ ash_inst
+ echo -n 'Type a newline to continue: '
+ read
+fi
+
+wiz=false
+cha=false
+prev=$LIM
+while :
+do room=`pwd`
+ if [ $room != $prev ]
+ then if [ $room = $HOME ]
+ then echo 'You are in your own home.'
+ else echo "You have entered $room."
+ fi
+ exs=
+ obs=
+ hexs=
+ hobs=
+ f=false
+ for i in `ls -a`
+ do case $i in
+ .|..) ;;
+ .*) if [ -f $i ]
+ then hobs="$hobs $i"
+ elif [ -d $i ]
+ then hexs="$hexs $i"
+ else f=true
+ fi
+ ;;
+ *) if [ -f $i ]
+ then obs="$obs $i"
+ elif [ -d $i ]
+ then exs="$exs $i"
+ else f=true
+ fi
+ ;;
+ esac
+ done
+ if [ "$obs" ]
+ then echo 'This room contains:'
+ ash_pr $obs
+ else echo 'The room looks empty.'
+ fi
+ if [ "$exs" ]
+ then echo 'There are exits labeled:'
+ ash_pr $exs
+ echo 'as well as a passage overhead.'
+ else echo 'There is a passage overhead.'
+ fi
+ if sh -c $f
+ then echo 'There are shadowy figures in the corner.'
+ fi
+ prev=$room
+ fi
+
+ read -e -p '-advsh> ' verb obj x # prompt is '-advsh> '
+ if [ $? != 0 ]
+ then verb=quit # EOF
+ fi
+
+ case $verb in
+ change) if [ "$obj" ]
+ then if ash_lk "$obs $hobs" "$obj"
+ then set -- $x
+ case "$1" in
+ to) if [ "$2" ]
+ then if [ -f $2 ]
+ then echo "You must destroy $2 first."
+ set --
+ fi
+ if [ "$2" ]
+ then if mv $obj $2 # >&- 2>&-
+ then echo "The $obj shimmers and turns into $2."
+ obs=`ash_rm "$2 $obs" "$obj"`
+ else echo "There is a cloud of smoke but the $obj is unchanged."
+ fi
+ fi
+ else echo 'To what?'
+ fi
+ ;;
+ *) echo "Change $obj to what?"
+ ;;
+ esac
+ else if ash_lk "$kn" "$obj"
+ then echo 'You must drop it first.'
+ else echo "I see no $obj here."
+ fi
+ fi
+ else echo 'Change what?'
+ fi
+ ;;
+ clone) if [ "$obj" ]
+ then if ash_lk "$obs $hobs" "$obj"
+ then if [ ! -r $obj ]
+ then echo "The $obj does not wish to be cloned."
+ else set -- $x
+ case "$1" in
+ as) if [ "$2" ]
+ then if [ -f $2 ]
+ then echo "You must destroy $2 first."
+ else if cp $obj $2 # >&- 2>&-
+ then echo "Poof! When the smoke clears, you see the new $2."
+ obs="$obs $2"
+ else echo 'You hear a dull thud but no clone appears.'
+ fi
+ fi
+ else echo 'As what?'
+ fi
+ ;;
+ *) echo "Clone $obj as what?"
+ ;;
+ esac
+ fi
+ else if ash_lk "$kn" "$obj"
+ then echo 'You must drop it first.'
+ else echo "I see no $obj here."
+ fi
+ fi
+ else echo 'Clone what?'
+ fi
+ ;;
+ drop) if [ "$obj" ]
+ then for it in $obj $x
+ do if ash_lk "$kn" "$it"
+ then if [ -w $it ]
+ then echo "You must destroy $it first."
+ else if mv $HOME/$KNAP/$it $it # >&- 2>&-
+ then echo "$it: dropped."
+ kn=`ash_rm "$kn" "$it"`
+ obs=`echo $it $obs`
+ else echo "The $it is caught in your knapsack."
+ fi
+ fi
+ else echo "You're not carrying the $it!"
+ fi
+ done
+ else echo 'Drop what?'
+ fi
+ ;;
+ enter|go) if [ "$obj" ]
+ then if [ $obj != up ]
+ then if ash_lk "$exs $hexs" "$obj"
+ then if [ -x $obj ]
+ then if cd $obj
+ then echo 'You squeeze through the passage.'
+ else echo "You can't go that direction."
+ fi
+ else echo 'An invisible force blocks your way.'
+ fi
+ else echo 'I see no such passage.'
+ fi
+ else if cd ..
+ then echo 'You struggle upwards.'
+ else echo "You can't reach that high."
+ fi
+ fi
+ else echo 'Which passage?'
+ fi
+ ;;
+ examine) if [ "$obj" ]
+ then if [ $obj = all ]
+ then $obj=`echo $obs $exs`
+ x=
+ fi
+ for it in $obj $x
+ do if ash_lk "$obs $hobs $exs $hexs" "$it"
+ then echo "Upon close inspection of the $it, you see:"
+ ls -ld $it 2>/dev/null
+ if [ $? != 0 ]
+ then echo "-- when you look directly at the $it, it vanishes."
+ fi
+ else if ash_lk "$kn" "$it"
+ then echo 'You must drop it first.'
+ else echo "I see no $it here."
+ fi
+ fi
+ done
+ else echo 'Examine what?'
+ fi
+ ;;
+ feed) if [ "$obj" ]
+ then if ash_lk "$obs $hobs" "$obj"
+ then set -- $x
+ case "$1" in
+ to) if [ "$2" ]
+ then shift
+ if PATH=$OPATH $* <$obj 2>/dev/null
+ then echo "The $1 monster devours your $obj."
+ if rm -f $obj # >&- 2>&-
+ then obs=`ash_rm "$obs" "$obj"`
+ else echo 'But he spits it back up.'
+ fi
+ else echo "The $1 monster holds his nose in disdain."
+ fi
+ else echo 'To what?'
+ fi
+ ;;
+ *) echo "Feed $obj to what?"
+ ;;
+ esac
+ else if ash_lk "$kn" "$obj"
+ then echo 'You must drop it first.'
+ else echo "I see no $obj here."
+ fi
+ fi
+ else echo 'Feed what?'
+ fi
+ ;;
+ get|take) if [ "$obj" ]
+ then if [ $obj = all ]
+ then obj="$obs"
+ x=
+ fi
+ for it in $obj $x
+ do if ash_lk "$obs $hobs" "$it"
+ then if ash_lk "$kn" "$it"
+ then echo 'You already have one.'
+ else if mv $it $HOME/$KNAP/$it # >&- 2>&-
+ then echo "$it: taken."
+ kn="$it $kn"
+ obs=`ash_rm "$obs" "$it"`
+ else echo "The $it is too heavy."
+ fi
+ fi
+ else echo "I see no $it here."
+ fi
+ done
+ else echo 'Get what?'
+ fi
+ ;;
+ gripe|bug) echo 'Please describe the problem and your situation at the time it failed.\nEnd the bug report with a line containing just a Ctrl-D.'
+ cat | mail $MAINT -s 'ash bug'
+ echo 'Thank you!'
+ ;;
+ help) ash_help
+ ;;
+ inventory|i) if [ "$kn" ]
+ then echo 'Your knapsack contains:'
+ ash_pr $kn
+ else echo 'You are poverty-stricken.'
+ fi
+ ;;
+ kill|destroy) if [ "$obj" ]
+ then if [ $obj = all ]
+ then x=
+ if ask "Do you really want to attempt to $verb them all?"
+ then obj=`echo $obs`
+ else echo 'Chicken!'
+ obj=
+ fi
+ fi
+ for it in $obj $x
+ do if ash_lk "$obs $hobs" "$it"
+ then if mv $it $HOME/$LIM # <&- >&- 2>&-
+ then if [ $verb = kill ]
+ then echo "The $it cannot defend himself; he dies."
+ else echo "You have destroyed the $it; it vanishes."
+ fi
+ obs=`ash_rm "$obs" "$it"`
+ else if [ $verb = kill ]
+ then echo "Your feeble blows are no match for the $it."
+ else echo "The $it is indestructible."
+ fi
+ fi
+ else if ash_lk "$kn" "$it"
+ then echo "You must drop the $it first."
+ found=false
+ else echo "I see no $it here."
+ fi
+ fi
+ done
+ else echo 'Kill what?'
+ fi
+ ;;
+ look|l) obs=`echo $obs $hobs`
+ hobs=
+ if [ "$obs" ]
+ then echo 'The room contains:'
+ ash_pr $obs
+ else echo 'The room is empty.'
+ fi
+ exs=`echo $exs $hexs`
+ hexs=
+ if [ "$exs" ]
+ then echo 'There are exits plainly labeled:'
+ ash_pr $exs
+ echo 'and a passage directly overhead.'
+ else echo 'The only exit is directly overhead.'
+ fi
+ ;;
+ magic) if [ "$obj" = mode ]
+ then if sh -c $cha
+ then echo 'You had your chance and you blew it.'
+ else if ask 'Are you a wizard?'
+ then echo -n 'Prove it! Say the magic word: '
+ read obj
+ if [ "$obj" = armadillo ]
+ then echo 'Yes, master!!'
+ wiz=true
+ else echo "Homie says: I don't think so"
+ cha=true
+ fi
+ else echo "I didn't think so."
+ fi
+ fi
+ else echo 'Nice try.'
+ fi
+ ;;
+ open|read) if [ "$obj" ]
+ then if ash_lk "$obs $hobs" "$obj"
+ then if [ -r $obj ]
+ then if [ -s $obj ]
+ then echo "Opening the $obj reveals:"
+ $CAT < $obj
+ if [ $? != 0 ]
+ then echo '-- oops, you lost the contents!'
+ fi
+ else echo "There is nothing inside the $obj."
+ fi
+ else echo "You do not have the proper tools to open the $obj."
+ fi
+ else if ash_lk "$kn" "$obj"
+ then echo 'You must drop it first.'
+ found=false
+ else echo "I see no $obj here."
+ fi
+ fi
+ else echo 'Open what?'
+ fi
+ ;;
+ quit|exit) if ask 'Do you really want to quit now?'
+ then if [ "$kn" ]
+ then echo 'The contents of your knapsack will still be there next time.'
+ fi
+ rm -rf $HOME/$LIM
+ echo 'See you later!'
+ exit 0
+ fi
+ ;;
+ resurrect) if [ "$obj" ]
+ then for it in $obj $x
+ do if ash_lk "$obs $hobs" "$it"
+ then echo "The $it is already alive and well."
+ else if mv $HOME/$LIM/$it $it # <&- >&- 2>&-
+ then echo "The $it staggers to his feet."
+ obs=`echo $it $obs`
+ else echo "There are sparks but no $it appears."
+ fi
+ fi
+ done
+ else echo 'Resurrect what?'
+ fi
+ ;;
+ steal) if [ "$obj" ]
+ then if ash_lk "$obs $hobs" "$obj"
+ then echo 'There is already one here.'
+ else set -- $x
+ case "$1" in
+ from) if [ "$2" ]
+ then shift
+ if PATH=$OPATH $* >$obj 2>/dev/null
+ then echo "The $1 monster drops the $obj."
+ obs=`echo $obj $obs`
+ else echo "The $1 monster runs away as you approach."
+ rm -f $obj # >&- 2>&-
+ fi
+ else echo 'From what?'
+ fi
+ ;;
+ *) echo "Steal $obj from what?"
+ ;;
+ esac
+ fi
+ else echo 'Steal what?'
+ fi
+ ;;
+ throw) if [ "$obj" ]
+ then if ash_lk "$obs $hobs" "$obj"
+ then set -- $x
+ case "$1" in
+ at) case "$2" in
+ daemon) if sh -c "lpr -r $obj"
+ then echo "The daemon catches the $obj, turns it into paper,\nand leaves it in the basket."
+ obs=`ash_rm "$obs" "$obj"`
+ else echo "The daemon is nowhere to be found."
+ fi
+ ;;
+ *) echo 'At what?'
+ ;;
+ esac
+ ;;
+ *) echo "Throw $obj at what?"
+ ;;
+ esac
+ else if ash_lk "$kn" "$obj"
+ then echo 'It is in your knapsack.'
+ found=false
+ else echo "I see no $obj here."
+ fi
+ fi
+ else echo 'Throw what?'
+ fi
+ ;;
+ u|up) if cd ..
+ then echo 'You pull yourself up a level.'
+ else echo "You can't reach that high."
+ fi
+ ;;
+ wake) if [ "$obj" ]
+ then echo "You awaken the $obj monster:"
+ PATH=$OPATH $obj $x
+ echo 'The monster slithers back into the darkness.'
+ else echo 'Wake what?'
+ fi
+ ;;
+ w|where) echo "You are in $room."
+ ;;
+ xyzzy) if cd
+ then echo 'A strange feeling comes over you.'
+ else echo 'Your spell fizzles out.'
+ fi
+ ;;
+ *) if [ "$verb" ]
+ then if sh -c $wiz
+ then PATH=$OPATH $verb $obj $x
+ else echo "I don't know how to \"$verb\"."
+ echo 'Type "help" for assistance.'
+ fi
+ else echo 'Say something!'
+ fi
+ ;;
+ esac
+done
--- /dev/null
+#From: "dennis" <dennis@netstrata.com>
+#To: <bash-maintainers@gnu.org>
+#Subject: New example script: bash-hexdump
+#Date: Mon, 4 Jan 2010 22:48:19 -0700
+#Message-ID: <6dbec42d$64fcdbd2$4a32cf2d$@com>
+
+#I've written a script that functions like "hexdump -C" or "hd". If you'd
+#like to include it in a future distribution of example Bash scripts, I have
+#included it here:
+
+#!/bin/bash
+# bash-hexdump# pure Bash, no externals
+# by Dennis Williamson - 2010-01-04
+# in response to
+http://stackoverflow.com/questions/2003803/show-hexadecimal-numbers-of-a-file
+# usage: bash-hexdump file
+saveIFS="$IFS"
+IFS="" # disables interpretation of \t, \n and space
+saveLANG="$LANG"
+LANG=C # allows characters > 0x7F
+bytecount=0
+valcount=0
+printf "%08x " $bytecount
+while read -d '' -r -n 1 char # -d '' allows newlines, -r allows \
+do
+ ((bytecount++))
+ # for information about the apostrophe in this printf command, see
+ # http://www.opengroup.org/onlinepubs/009695399/utilities/printf.html
+ printf -v val "%02x" "'$char"
+ echo -n "$val "
+ ((valcount++))
+ if [[ "$val" < 20 || "$val" > 7e ]]
+ then
+ string+="." # show unprintable characters as a dot
+ else
+ string+=$char
+ fi
+ if (( bytecount % 8 == 0 )) # add a space down the middle
+ then
+ echo -n " "
+ fi
+ if (( bytecount % 16 == 0 )) # print 16 values per line
+ then
+ echo "|$string|"
+ string=''
+ valcount=0
+ printf "%08x " $bytecount
+ fi
+done < "$1"
+
+if [[ "$string" != "" ]] # if the last line wasn't full, pad it out
+then
+ length=${#string}
+ if (( length > 7 ))
+ then
+ ((length--))
+ fi
+ (( length += (16 - valcount) * 3 + 4))
+ printf "%${length}s\n" "|$string|"
+ printf "%08x " $bytecount
+fi
+echo
+
+LANG="$saveLANG";
+IFS="$saveIFS"
+
+exit 0
--- /dev/null
+# 1-Feb-86 09:37:35-MST,30567;000000000001
+# Return-Path: <unix-sources-request@BRL.ARPA>
+# Received: from BRL-TGR.ARPA by SIMTEL20.ARPA with TCP; Sat 1 Feb 86 09:36:16-MST
+# Received: from usenet by TGR.BRL.ARPA id a002623; 1 Feb 86 9:33 EST
+# From: chris <chris@globetek.uucp>
+# Newsgroups: net.sources
+# Subject: Improved Bcsh (Bourne Shell Cshell-Emulator)
+# Message-ID: <219@globetek.UUCP>
+# Date: 30 Jan 86 17:34:26 GMT
+# To: unix-sources@BRL-TGR.ARPA
+#
+# This is a new, improved version of my Bourne shell cshell-emulator.
+# The code has been cleaned up quite a bit, and a couple of new features
+# added (now supports 'noclobber' and 'iclobber' variables). A bug with
+# 'eval' that caused "illegal I/O" error messages on vanilla V7 shells has
+# also been fixed.
+
+# I have posted the program in its entirety because a context diff of the
+# old and new versions was longer than the new version...
+
+# --Chris
+# Bcsh -- A Simple Cshell-Like Command Pre-Processor For The Bourne Shell
+#
+# "Copyright (c) Chris Robertson, December 1985"
+#
+# This software may be used for any purpose provided the original
+# copyright notice and this notice are affixed thereto. No warranties of
+# any kind whatsoever are provided with this software, and it is hereby
+# understood that the author is not liable for any damagages arising
+# from the use of this software.
+#
+# Features Which the Cshell Does Not Have:
+# ----------------------------------------
+#
+# + command history persists across bcsh sessions
+# + global last-command editing via 'g^string1^string2^' syntax
+# + edit any command via $EDITOR or $VISUAL editors
+# + history file name, .bcshrc file name, alias file name, and number
+# of commands saved on termination can be set by environment variables
+# + prompt may evaluate commands, such as `pwd`, `date`, etc.
+# + the whole text of interactive 'for' and 'while' loops and 'if'
+# statements goes into the history list and may be re-run or edited
+# + multiple copies of commands and requests to see command history
+# are not added to the history list
+# + the history mechanism actually stores all commands entered in a
+# current session, not just $history of them. This means that you
+# can increase $history on the fly and at once have a larger history.
+#
+#
+# Synonyms:
+# ---------
+#
+# logout, exit, bye write out history file and exit
+# h, history show current history list
+#
+#
+# Aliases:
+# --------
+#
+# alias NAME CMND create an alias called NAME to run CMND
+# unalias NAME remove the alias NAME
+#
+# There are no 'current-session only' aliases -- all alias and unalias
+# commands are permanent, and stored in the $aliasfile.
+#
+# If an alias contains positional variables -- $1, $2, $*, etc. -- any
+# arguments following the alias name are considered to be values for
+# those variables, and the alias is turned into a command of the form
+# 'set - arguments;alias'. Otherwise, a simple substitution is performed
+# for the alias and the rest of the command preserved. The cshell
+# convention of using '\!:n' in an alias to get bits of the current
+# command is mercifully abandoned.
+#
+# Quotes are not necessary around the commands comprising an alias;
+# in fact, any enclosing quotes are stripped when the alias is added
+# to the file.
+#
+# A couple of typical aliases might be:
+#
+# goto cd $1;pwd
+# l ls -F
+#
+# Note that aliasing something to "commands;logout" will not work -- if
+# you want something to happen routinely on logout put it in the file
+# specified by $logoutfile, default = $HOME/.blogout.
+#
+#
+# Command Substitutions:
+# ----------------------
+#
+# !! substitute last command from history list
+# !!:N substitute Nth element of last command from
+# history list -- 0 = command name, 1 = 1st arg
+# !!:$ substitute last element of last command from
+# history list
+# !!:* substitute all arguments to last command
+# from history list
+# !NUMBER substitute command NUMBER from the history list
+# !NUMBER:N as above, but substitute Nth element, where
+# 0 = command name, 1 = 1st arg, etc.
+# !NUMBER:$ as above, but substitute last element
+# !NUMBER:* as above, but substitute all arguments
+# !-NUMBER substitute the command NUMBER lines from the
+# end of the history list; 1 = last command
+# !-NUMBER:N as above, but substitute Nth element, where
+# 0 = command name, 1 = 1st arg, etc.
+# !-NUMBER:$ as above, but substitute last element
+# !-NUMBER:* as above, but substitute all arguments
+# !?STRING substitute most-recent command from history list
+# containing STRING -- STRING must be enclosed in
+# braces if followed by any other characters
+# !?STRING:N as above, but substitute Nth element, where
+# 0 = command name, 1 = 1st arg, etc.
+# !?STRING:$ as above, but substitute last element
+# !?STRING:* as above, but substitute all arguments
+#
+#
+# Command Editing:
+# ----------------
+#
+# CMND~e edit CMND using $EDITOR, where CMND may be found
+# using a history substitution
+# CMND~v edit CMND using $VISUAL, where CMND may be found
+# using a history substitution
+# " ^string1^string2^ substitute string2 for string1 in last command"
+# command and run it
+# " g^string1^string2^ globally substitute string2 for string1 in "
+# last command and run it
+# !NUMBER:s/string1/string2/
+# substitute string2 for string1 in
+# command NUMBER and run it
+# !NUMBER:gs/string1/string2/
+# globally substitute string2 for string1 in
+# command NUMBER and run it
+# !?STRING:s/string1/string2/
+# substitute string2 for string1 in last command
+# containing STRING and run it
+# !?STRING:gs/string1/string2/
+# globally substitute string2 for string1 in last
+# command containing STRING and run it
+#
+# Any command which ends in the string ":p" is treated as a normal
+# command until all substitutions have been completed. The trailing
+# ":p" is then stripped, and the command is simply echoed and added to
+# the history list instead of being executed.
+#
+# None of the other colon extensions of the cshell are supported.
+#
+#
+# Shell Environment Variables:
+# ----------------------------
+#
+# EDITOR editor used by ~e command, default = "ed"
+# VISUAL editor used by ~v command, default = "vi"
+# MAIL your system mailbox
+# PAGER paging program used by history command, default = "more"
+# PS1 primary prompt
+# PS2 secondary prompt
+# history number of commands in history list, default = 22
+# histfile file history list is saved in, default = $HOME/.bhistory
+# savehist number of commands remembered from last bcsh session
+# aliasfile file of aliased commands, default = $HOME/.baliases
+# logoutfile file of commands to be executed before termination
+# inc_cmdno yes/no -- keep track of command numbers or not
+# noclobber if set, existing files are not overwritten by '>'
+# iclobber if both noclobber and iclobber are set, the user is
+# prompted for confirmation before existing files are
+# overwritten by '>'
+#
+# Note: if you are setting either noclobber or iclobber mid-session,
+# set them to 'yes'
+#
+#
+# Regular Shell Variables:
+# ------------------------
+#
+# Shell variables may be set via Bourne or cshell syntax, e.g., both
+# "set foo=bar" and "foo=bar" set a variable called "foo" with the value
+# "bar". However, all variables are automatically set as environment
+# variables, so there is no need to export them. Conversely, there
+# are NO local variables. Sorry, folks.
+#
+# A cshell-style "setenv" command is turned into a regular "set" command.
+#
+#
+# The Prompt:
+# ----------
+#
+# You may, if you wish, have a command executed in your prompt. If
+# the variable PS1 contains a dollar sign or a backquote, it is
+# evaluated and the result used as the prompt, provided the evaluation
+# did not produce a "not found" error message. The two special cases
+# of PS1 consisting solely of "$" or "$ " are handled correctly. For
+# example, to have the prompt contain the current directory followed
+# by a space, enter:
+#
+# PS1=\'echo "`pwd` "\'
+#
+# You need the backslashed single quotes to prevent the command being
+# evaluated by the variable-setting mechanism and the shell before it
+# is assigned to PS1.
+#
+# To include the command number in your prompt, enter the command:
+#
+# PS1=\'echo "$cmdno "\'
+#
+#
+# Shell Control-Flow Syntax:
+# --------------------------
+#
+# 'While', 'for', 'case', and 'if' commands entered in Bourne shell
+# syntax are executed as normal.
+#
+# A valiant attempt is made to convert 'foreach' loops into 'for' loops,
+# cshell-syntax 'while' loops into Bourne shell syntax, and 'switch'
+# statements into 'case' statements. I cannot guarantee to always get it
+# right. If you forget the 'do' in a 'while' or 'for' loop, or finish
+# them with 'end' instead of 'done', this will be corrected.
+#
+# Note that cshell-to-Bourne control flow conversions do not take place
+# if control is nested -- e.g., a 'foreach' inside a 'while' will fail.
+#
+# The simple-case cshell "if (condition) command" is turned into Bourne
+# syntax. Other 'if' statements are left alone apart from making the
+# 'then' a separate statement, because constructing a valid interactive
+# cshell 'if' statement is essentially an exercise in frustration anyway.
+# The cshell and Bourne shell have sufficiently different ideas about
+# conditions that if is probably best to resign yourself to learning
+# the Bourne shell conventions.
+#
+# Note that since most of the testing built-ins of the cshell are
+# not available in the Bourne shell, a complex condition in a 'while'
+# loop or an 'if' statement will probably fail.
+#
+#
+# Bugs, Caveats, etc.:
+# --------------------
+#
+# This is not a super-speedy program. Be patient, especially on startup.
+#
+# To the best of my knowledge this program should work on ANY Bourne
+# shell -- note that if your shell does not understand 'echo -n' you
+# will have to re-set the values of '$n' and '$c'.
+#
+# This program may run out of stack space on a 16-bit machine where
+# /bin/sh is not split-space.
+#
+# Mail checking is done every 10 commands if $MAIL is set in your
+# environment. For anything fancier, you will have to hack the code.
+#
+# Because commands are stuffed in a file before sh is invoked on them,
+# error messages from failed commands are ugly.
+#
+# Failed history substitutions either give nothing at all, or a
+# "not found" style of error message.
+#
+# A command history is kept whether you want it or not. This may be
+# perceived as a bug or a feature, depending on which side of bed you
+# got out on.
+#
+# If you want a real backslash in a command, you will have to type two
+# of them because the shell swallows the first backslash in the initial
+# command pickup. This means that to include a non-history '!' in a
+# command you need '\\!' -- a real wart, especially for net mail,
+# but unavoidable.
+#
+# Commands containing an '@' will break all sorts of things.
+#
+# Very complex history substitutions may fail.
+#
+# File names containing numbers may break numeric history sustitutions.
+#
+# Commands containing bizzare sequences of characters may conflict
+# with internal kludges.
+#
+# Aliasing something to "commands;logout" will not work -- if you
+# want something to happen routinely on logout, put it in the file
+# specified by $logoutfile, default = $HOME/.blogout.
+#
+# Please send all bug reports to ihnp4!utzoo!globetek!chris.
+# Flames will be posted to net.general with 'Reply-to' set to your
+# ' path... :-) '
+#
+#
+#
+# ************* VERY IMPORTANT NOTICE *************
+#
+# If your shell supports # comments, then REPLACE all the colon 'comments'
+# with # comments. If it does not, then REMOVE all the 'comment' lines from the
+# working copy of the file, as it will run MUCH faster -- the shell evaluates
+# lines starting with a colon but does not actually execute them, so you will
+# save the read-and-evaluate time by removing them.
+
+case "`echo -n foo`" in
+ -n*)
+ n=
+ c="\c"
+ ;;
+ foo)
+ n=-n
+ c=
+ ;;
+ *)
+ echo "Your 'echo' command is broken."
+ exit 1
+ ;;
+esac
+history=${history-22}
+savehist=${savehist-22}
+histfile=${histfile-$HOME/.bhistory}
+logoutfile=${logoutfile-$HOME/.blogout}
+EDITOR=${EDITOR-ed}
+VISUAL=${VISUAL-vi}
+PAGER=${PAGER-more}
+
+aliasfile=${aliasfile-$HOME/.baliases}
+
+# the alias file may contain 1 blank line, so a test -s will not work
+
+case "`cat $aliasfile 2> /dev/null`" in
+ "")
+ doalias=no
+ ;;
+ *)
+ doalias=yes
+ ;;
+esac
+
+if test -s "${sourcefile-$HOME/.bcshrc}"
+ then
+ . ${sourcefile-$HOME/.bcshrc}
+fi
+
+if test -s "$histfile"
+ then
+ cmdno="`set - \`wc -l $histfile\`;echo $1`"
+ cmdno="`expr \"$cmdno\" + 1`"
+ lastcmd="`sed -n '$p' $histfile`"
+ copy=false
+ ohist=$histfile
+ while test ! -w "$histfile"
+ do
+ echo "Cannot write to history file '$histfile'."
+ echo $n "Please enter a new history filename: $c"
+ read histfile
+ copy=true
+ done
+ if $copy
+ then
+ cp $ohist $histfile
+ fi
+else
+ cat /dev/null > $histfile
+ cmdno=1
+ lastcmd=
+fi
+
+# keep track of command number as the default
+
+inc_cmdno=${inc_cmdo-yes}
+
+# default prompts -- PS1 and PS2 may be SET but EMPTY, so '${PS1-% }' syntax
+# is not used here
+
+case "$PS1" in
+ "")
+ PS1="% "
+ ;;
+esac
+case "$PS2" in
+ "")
+ PS2="> "
+ ;;
+esac
+
+export histfile savehist history aliasfile EDITOR VISUAL PAGER cmdno PS1 PS2
+
+case "$MAIL" in
+ "")
+ ;;
+ *)
+ if [ -f $MAIL ]; then
+ mailsize=`set - \`wc -c $MAIL\`;echo $1`
+ else
+ mailsize=0
+ fi
+ ;;
+esac
+
+trap ':' 2
+trap exit 3
+trap "tail -n $savehist $histfile>/tmp/hist$$;uniq /tmp/hist$$ > $histfile;\
+rm -f /tmp/*$$;exit 0" 15
+
+getcmd=yes
+mailcheck=
+exclaim=
+echoit=
+mailprompt=
+
+while :
+do
+
+ run=yes
+ case "$mailprompt" in
+ "")
+ ;;
+ *)
+ echo "$mailprompt"
+ ;;
+ esac
+ case "$getcmd" in
+ yes)
+ : guess if the prompt should be evaluated or not
+ case "$PS1" in
+ \$|\$\ )
+ echo $n "$PS1$c"
+ ;;
+ *\`*|*\$*)
+ tmp="`(eval $PS1) 2>&1`"
+ case "$tmp" in
+ *not\ found)
+ echo $n "$PS1$c"
+ ;;
+ *)
+ echo $n "$tmp$c"
+ ;;
+ esac
+ ;;
+ *)
+ echo $n "$PS1$c"
+ ;;
+ esac
+
+ read cmd || cmd="exit"
+ ;;
+ *) ;;
+ esac
+
+ case "$MAIL" in
+ "")
+ ;;
+ *)
+ : check for mail every 10 commands
+ case "$mailcheck" in
+ 1111111111)
+ mailcheck=
+ if [ -f $MAIL ]; then
+ newsize="`set - \`wc -c $MAIL\`;echo $1`"
+ else
+ newsize=0
+ fi
+ if test "$newsize" -gt "$mailsize"; then
+ mailprompt="You have new mail"
+ else
+ mailprompt=
+ fi
+ mailsize=$newsize
+ ;;
+ *)
+ mailcheck=1$mailcheck
+ ;;
+ esac
+ ;;
+ esac
+ hist=no
+
+ case "$cmd" in
+ "")
+ continue
+ ;;
+ sh)
+ sh
+ run=no
+ ;;
+ !!)
+ cmd=$lastcmd
+ echoit=yes
+ getcmd=no
+ continue
+ ;;
+ *:p)
+ cmd="`expr \"$cmd\" : '\(.*\):p'` +~+p"
+ getcmd=no
+ continue
+ ;;
+ foreach[\ \ ]*)
+ while test "$line" != "end"; do
+ echo $n "$PS2$c"
+ read line
+ cmd="${cmd};$line"
+ done
+ echo "$cmd" > /tmp/bcsh$$
+ ed - /tmp/bcsh$$ << ++++
+ s/end/done/
+ s/foreach[ ]\(.*\)(/for \1 in /
+ s/)//
+ s/;/;do /
+ w
+++++
+ ;;
+ for[\ \ ]*|while[\ \ ]*)
+ # try to catch the most common cshell-to-Bourne-shell
+ # mistakes
+
+ echo $n "$PS2$c"
+ read line
+ case "$line" in
+ *do)
+ line="do :"
+ ;;
+ *do*)
+ ;;
+ *)
+ line="do $line"
+ ;;
+ esac
+
+ cmd="${cmd};$line"
+ while test "$line" != "done" && test "$line" != "end"
+ do
+ echo $n "$PS2$c"
+ read line
+ case "$line" in
+ end)
+ line=done
+ ;;
+ esac
+ cmd="${cmd};$line"
+ done
+ echo "$cmd" > /tmp/bcsh$$
+ ;;
+ if[\ \ ]*)
+ while test "$line" != "fi" && test "$line" != "endif"
+ do
+ echo $n "$PS2$c"
+ read line
+ case "$line" in
+ *[a-z]*then)
+ line="`expr \"$line\" : '\(.*\)then'`;then"
+ ;;
+ endif)
+ line=fi
+ ;;
+ esac
+ cmd="${cmd};$line"
+ done
+ echo "$cmd" > /tmp/bcsh$$
+ case "`grep then /tmp/bcsh$$`" in
+ "")
+ # fix 'if foo bar' cases
+
+ ed - /tmp/bcsh$$ << ++++
+ s/)/);then/
+ s/.*/;fi/
+ w
+++++
+ ;;
+ esac
+ ;;
+ case[\ \ ]*)
+ while test "$line" != "esac"
+ do
+ echo $n "$PS2$c"
+ read line
+ cmd="${cmd}@$line"
+ done
+ cmd="`echo \"$cmd\" | tr '@' ' '`"
+ echo "$cmd" > /tmp/bcsh$$
+ ;;
+ switch[\ \ ]*)
+ while test "$line" != "endsw"
+ do
+ echo $n "$PS2$c"
+ read line
+ cmd="${cmd}@$line"
+ done
+ echo "$cmd" > /tmp/bcsh$$
+ ed - /tmp/bcsh$$ << '++++'
+ 1,$s/@/\
+/g
+ g/switch.*(/s//case "/
+ s/)/" in/
+ 1,$s/case[ ]\(.*\):$/;;\
+ \1)/
+ 2d
+ 1,$s/endsw/;;\
+esac/
+ g/breaksw/s///
+ 1,$s/default.*/;;\
+ *)/
+ w
+++++
+ cmd="`cat /tmp/bcsh$$`"
+ ;;
+ *!*)
+ hist=yes
+ ;;
+ esac
+
+ case "$hist" in
+ yes)
+ # deal with genuine exclamation marks, go back and parse again
+
+ case "$cmd" in
+ *\>![\ \ ]*|*\\!*)
+ cmd="`echo \"$cmd\" | sed -e 's@\\!@REALEXCLAMATIONMARK@g'`"
+ exclaim=yes
+ getcmd=no
+ continue
+ ;;
+ esac
+
+ # break command into elements, parse each one
+
+ tmp=
+ for i in $cmd
+ do
+ # find element with !, peel off stuff up to !
+
+ case "$i" in
+ !)
+ # most likely a typo for !!, so fix it
+ front=
+ $i=!!
+ ;;
+ !!*)
+ front=
+ i="`expr \"$i\" : '.*\(!!.*\)'`"
+ ;;
+ *!!*)
+ front="`expr \"$i\" : '\(.*\)!!.*'`"
+ i="`expr \"$i\" : '.*\(!!.*\)'`"
+ ;;
+ !*)
+ front=
+ i="`expr \"$i\" : '.*!\(.*\)'`"
+ ;;
+ *)
+ tmp="$tmp$i "
+ continue
+ ;;
+ esac
+ case "$i" in
+ !!*)
+ # want last command
+
+ rest="`expr \"$i\" : '!!\(.*\)'`"
+ i=$lastcmd
+ ;;
+ -*)
+ # we want to search back through the history list
+
+ case "$i" in
+ -)
+ rest="`expr \"$i\" : '-\(.*\)'`"
+ i=$lastcmd
+ ;;
+ -[0-9]*)
+ wanted="`expr \"$i\" : '-\([0-9][0-9]*\).*'`"
+ rest="`expr \"$i\" : '-[0-9][0-9]*\(.*\)'`"
+ i="`tail -n $wanted $histfile | sed -e "1q"`"
+ ;;
+ esac
+ ;;
+ [0-9]*)
+ # find which number command is wanted
+
+ wanted="`expr \"$i\" : '\([0-9][0-9]*\).*'`"
+ rest="`expr \"$i\" : '[0-9][0-9]*\(.*\)'`"
+ i="`grep -n . $histfile | grep \"^$wanted\"`"
+ i="`expr \"$i\" : \"${wanted}.\(.*\)\"`"
+ ;;
+ \?*)
+
+ # find which 'command-contains' match is wanted
+
+ case "$i" in
+ \?{*}*)
+ wanted="`expr \"$i\" : '?{\(.*\)}.*'`"
+ rest="`expr \"$i\" : '?.*}\(.*\)'`"
+ ;;
+ \?*:*)
+ wanted="`expr \"$i\" : '?\(.*\):.*'`"
+ rest="`expr \"$i\" : '?.*\(:.*\)'`"
+ ;;
+ \?*)
+ wanted="`expr \"$i\" : '?\(.*\)'`"
+ rest=
+ ;;
+ esac
+ i="`grep \"$wanted\" $histfile | sed -n '$p'`"
+ ;;
+ *)
+ # find which 'start-of-command' match is wanted
+
+ case "$i" in
+ {*}*)
+ wanted="`expr \"$i\" : '{\(.*\)}.*'`"
+ rest="`expr \"$i\" : '.*}\(.*\)'`"
+ ;;
+ *:*)
+ wanted="`expr \"$i\" : '\(.*\):.*'`"
+ rest="`expr \"$i\" : '.*\(:.*\)'`"
+ ;;
+ *)
+ wanted="$i"
+ rest=
+ ;;
+ esac
+ i="`grep \"^$wanted\" $histfile | sed -n '$p'`"
+ ;;
+ esac
+
+ # see if we actually found anything to substitute
+
+ case "$i" in
+ "")
+ badsub="Event not found"
+ break
+ ;;
+ *)
+ badsub=no
+ ;;
+ esac
+
+ case "$rest" in
+ "")
+ tmp="$front$tmp$i "
+ continue
+ ;;
+ :[0-9]*)
+ # find which element of $i is wanted
+
+ number="`expr \"$rest\" : ':\([0-9][0-9]*\).*'`"
+ rest="`expr \"$rest\" : ':[0-9][0-9]*\(.*\)'`"
+
+ # count through $i till we get to the
+ # right element
+
+ counter=0
+ for element in $i
+ do
+ case "$counter" in
+ $number)
+ break
+ ;;
+ *)
+ counter="`expr \"$counter\" + 1`"
+ # counter=$(( $counter + 1 ))
+ ;;
+ esac
+ done
+ case "$counter" in
+ $number)
+ badsub=no
+ ;;
+ *)
+ badsub="Bad command element"
+ break
+ ;;
+ esac
+ tmp="$tmp$front$element$rest "
+ continue
+ ;;
+ :\$*)
+ # spin through $i till we hit the last element
+
+ rest="`expr \"$rest\" : ':\$\(.*\)'`"
+ for element in $i
+ do
+ :
+ done
+ tmp="$tmp$front$element$rest "
+ continue
+ ;;
+ :\**)
+ # we want all elements except the command itself
+
+ rest="`expr \"$rest\" : ':\*\(.*\)'`"
+ save=$i
+ set - $i
+ shift
+ case "$*" in
+ "")
+ badsub="No arguments to command '$save'"
+ break
+ ;;
+ *)
+ badsub=no
+ ;;
+ esac
+ tmp="$tmp$front$*$rest "
+ continue
+ ;;
+ :s*|:gs*)
+ # we are doing a substitution
+ # put / on end if needed
+
+ case "$rest" in
+ :s/*/*/*|:gs/*/*/*)
+ ;;
+ :s/*/*|:gs/*/*)
+ rest="${rest}/"
+ ;;
+ esac
+
+ # find what substitution is wanted
+
+ first="`expr \"$rest\" : ':*s\/\(.*\)\/.*\/.*'`"
+ second="`expr \"$i\" : ':*s/.*/\(.*\)/.*'`"
+
+ # see if it is a global substitution
+
+ case "$rest" in
+ :gs*)
+ global=g
+ ;;
+ :s*)
+ global=
+ ;;
+ esac
+ rest="`expr \"$rest\" : '.*/.*/.*/\(.*\)'`"
+ i="`echo \"$i\" | sed -e \"s@$first@$second@$global\"`"
+
+ # see if subsitution worked
+
+ case "$i" in
+ "")
+ badsub="Substiution failed"
+ break
+ ;;
+ *)
+ badsub=no
+ ;;
+ esac
+ tmp="$tmp$front$i$rest "
+ continue
+ ;;
+ *)
+ tmp="$tmp$front$i$rest "
+ ;;
+ esac
+ done
+ case "$badsub" in
+ no)
+ ;;
+ *)
+ echo "$badsub"
+ badsub=no
+ continue
+ ;;
+ esac
+ cmd="$tmp"
+ echoit=yes
+ getcmd=no
+ continue
+ ;;
+ *)
+ run=yes
+ ;;
+ esac
+
+ case "$cmd" in
+ *\^*\^*\^*)
+ # see if the substitution is global
+ case "$cmd" in
+ g*)
+ global=g
+ ;;
+ *)
+ global=
+ ;;
+ esac
+
+ # put a '^' on the end if necessary
+ case "$cmd" in
+ *\^)
+ ;;
+ *)
+ cmd="${cmd}^"
+ ;;
+ esac
+
+ # find what substitution is wanted
+
+ first="`expr \"$cmd\" : '*\^\(.*\)\^.*\^.*'`"
+ second="`expr \"$cmd\" : '*\^.*\^\(.*\)\^.*'`"
+ rest="`expr \"$cmd\" : '*\^.*\^.*\^\(.*\)'`"
+ cmd="`echo \"$lastcmd\" | sed -e \"s@$first@$second@$global\"`$rest"
+
+ # see if the substitution worked
+
+ case "$cmd" in
+ "")
+ echo "Substitution failed"
+ continue
+ ;;
+ esac
+ echoit=yes
+ getcmd=no
+ continue
+ ;;
+ *~e)
+ echo "$cmd" | sed -e "s@~e@@" > /tmp/bcsh$$
+ $EDITOR /tmp/bcsh$$
+ cmd="`cat /tmp/bcsh$$`"
+ getcmd=no
+ continue
+ ;;
+ *~v)
+ echo "$cmd" | sed -e "s@~v@@" > /tmp/bcsh$$
+ echo "$lastcmd" > /tmp/bcsh$$
+ $VISUAL /tmp/bcsh$$
+ cmd="`cat /tmp/bcsh$$`"
+ getcmd=no
+ continue
+ ;;
+ exec[\ \ ]*)
+ tail -n $savehist $histfile>/tmp/hist$$
+ uniq /tmp/hist$$ > $histfile
+ rm -f /tmp/*$$
+ echo $cmd > /tmp/cmd$$
+ . /tmp/cmd$$
+ ;;
+ login[\ \ ]*|newgrp[\ \ ]*)
+ tail -n $savehist $histfile>/tmp/hist$$
+ uniq /tmp/hist$$ > $histfile
+ rm -f /tmp/*$$
+ echo $cmd > /tmp/cmd$$
+ . /tmp/cmd$$
+ ;;
+ logout|exit|bye)
+ if test -s "$logoutfile"
+ then
+ # sh $logoutfile
+ $SHELL $logoutfile
+ fi
+ tail -n $savehist $histfile > /tmp/hist$$
+ uniq /tmp/hist$$ > $histfile
+ rm -f /tmp/*$$
+ exit 0
+ ;;
+ h|history)
+ grep -n . $histfile | tail -n $history | sed -e 's@:@ @' | $PAGER
+ continue
+ ;;
+ h[\ \ ]\|*|h[\ \ ]\>*|h\|*|h\>*)
+ cmd="`echo \"$cmd\" | sed -e \"s@h@grep -n . $histfile | tail -n $history | sed -e 's@:@ @'@\"`"
+ getcmd=no
+ continue
+ ;;
+ history[\ \ ]*\|*|history[\ \ ]*\>*)
+ cmd="`echo \"$cmd\" | sed -e \"s@history@grep -n . $histfile | tail -n $history | sed -e 's@:@ @'@\"`"
+ getcmd=no
+ continue
+ ;;
+ source[\ \ ]*)
+ set - $cmd
+ shift
+ echo . $* > /tmp/cmd$$
+ . /tmp/cmd$$
+ run=no
+ ;;
+ wait)
+ wait
+ run=no
+ ;;
+ .[\ \ ]*)
+ echo $cmd > /tmp/cmd$$
+ . /tmp/cmd$$
+ run=no
+ ;;
+ cd|cd[\ \ ]*)
+ # check if it will work first, or else this shell will terminate
+ # if the cd dies. If you have a built-in test, you might want
+ # to replace the try-it-and-see below with a couple of tests,
+ # but it is probably just as fast like this.
+
+ echo $cmd > /tmp/cmd$$
+ if ($SHELL /tmp/cmd$$) ; then
+ . /tmp/cmd$$
+ fi
+ run=no
+ ;;
+ awk[\ \ ]*|dd[\ \ ]*|cc[\ \ ]*|make[\ \ ]*)
+ # these are the only commands I can think of whose syntax
+ # includes an equals sign. Add others as you find them.
+
+ echo "$cmd" > /tmp/bcsh$$
+ ;;
+ setenv*|*=*)
+ # handle setting shell variables, turning cshell syntax to Bourne
+ # syntax -- note all variables must be exported or they will not
+ # be usable in other commands
+
+ echo "$cmd" > /tmp/cmd$$
+ ed - /tmp/cmd$$ << ++++
+ g/^setenv[ ]/s/[ ]/@/
+ g/^setenv@/s/[ ]/=/
+ g/^setenv@/s///
+ g/^set/s///
+ .t.
+ \$s/=.*//
+ s/^/export /
+ w
+++++
+ . /tmp/cmd$$
+ rm -f /tmp/cmd$$
+ run=no
+ ;;
+ unset[\ \ ]*|umask[\ \ ]*|export[\ \ ]*|set[\ \ ]*)
+ # handle commands which twiddle current environment
+
+ $cmd
+ run=no
+ ;;
+ alias|alias[\ \ ])
+ if [ -f $aliasfile ]; then
+ $PAGER $aliasfile
+ fi
+ lastcmd=$cmd
+ run=no
+ continue
+ ;;
+ alias[\ \ ]*)
+ case "$cmd" in
+ alias[\ \ ]\|*|alias[\ \ ]\>*)
+ cmd="`echo \"$cmd\" | sed -e \"s@alias@cat $aliasfile@\"`"
+ getcmd=no
+ continue
+ ;;
+ alias[\ \ ]*[\ \ ]*)
+ ;;
+ *)
+ echo "Syntax: alias name command"
+ cmd=
+ continue
+ ;;
+ esac
+ set - $cmd
+ shift
+ cmd="$*"
+
+ # make sure there is always 1 blank line in file so
+ # unaliasing will always work -- ed normally refuses
+ # to write an empty file
+ echo "" >> $aliasfile
+ cat << ++++ >> $aliasfile
+$cmd
+++++
+
+# ed - $aliasfile << '++++'
+# g/alias[ ]/s///
+# g/^['"]\(.*\)['"]$/s//\1/
+# g/^/s//alias /
+# w
+#++++
+
+ sort -u -o $aliasfile $aliasfile
+ doalias=yes
+ cmd="alias $cmd"
+ run=no
+ ;;
+ unalias[\ \ ]*)
+ set - $cmd
+ case "$#" in
+ 2)
+ cmd=$2
+ ;;
+ *)
+ echo "Syntax: unalias alias_name"
+ continue
+ ;;
+ esac
+ ed - $aliasfile << ++++
+ /^$cmd[ ]/d
+ w
+++++
+ case "`set - \`wc -l $aliasfile\`;echo $1`" in
+ 1)
+ # just removed last alias
+ doalias=no
+ ;;
+ esac
+ run=no
+ ;;
+ *)
+ case "$doalias" in
+ yes)
+ set - $cmd
+ tmp="`grep \"^$1 \" $aliasfile`"
+ case "$tmp" in
+ $1[\ \ ]*)
+ shift
+ cmd=$*
+ set - $tmp
+ shift
+ tmp=$*
+ case "$tmp" in
+ *\$*)
+ # uses positional variables
+
+ cmd="set - $cmd ; $tmp"
+ getcmd=no
+ continue
+ ;;
+ *)
+ cmd="$tmp $cmd"
+ getcmd=no
+ continue
+ ;;
+ esac
+ ;;
+ *)
+ echo "$cmd" > /tmp/bcsh$$
+ ;;
+ esac
+ ;;
+ no)
+ echo "$cmd" > /tmp/bcsh$$
+ ;;
+ esac
+ ;;
+ esac
+
+ case "$cmd" in
+ *+~+p)
+ cmd="`expr \"$cmd\" : '\(.*\)+~+p'`"
+ echoit=yes
+ run=no
+ ;;
+ esac
+
+ case "$cmd" in
+ "")
+ continue
+ ;;
+ *)
+ case "$exclaim" in
+ yes)
+ cmd="`echo \"$cmd\" | sed -e 's@REALEXCLAMATIONMARK@!@g'`"
+ echo "$cmd" > /tmp/bcsh$$
+ ;;
+ esac
+ case "$echoit" in
+ yes)
+ echo $cmd
+ ;;
+ esac
+ case "$run" in
+ yes)
+ case "${noclobber+yes}" in
+ yes)
+ case "$cmd" in
+ *\>![\ \ ]*)
+ ed - /tmp/bcsh$$ << ++++
+ g/>!/s//>/
+ w
+++++
+ ;;
+ *\>\>*)
+ ;;
+ *\>*)
+ outfile="`expr \"$cmd\" : '.*>\(.*\)'`"
+ case "$outfile" in
+ \&*)
+ ;;
+ *)
+ set - $outfile
+ outfile="$1"
+ if test -s "$outfile"
+ then
+ case "${iclobber+yes}" in
+ yes)
+ echo $n "Overwrite ${outfile}? $c"
+ read answer
+ case "$answer" in
+ y*)
+ ;;
+ *)
+ echo ':' > /tmp/bcsh$$
+ ;;
+ esac
+ ;;
+ *)
+ echo "${outfile}: file exists"
+ echo ':' > /tmp/bcsh$$
+ ;;
+ esac
+ fi
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+ *)
+ case "$cmd" in
+ *\>![\ \ ]*)
+ ed - /tmp/bcsh$$ << ++++
+ g/>!/s//>/g
+ w
+++++
+ ;;
+ esac
+ ;;
+ esac
+ (trap 'exit 1' 2 3; $BASH /tmp/bcsh$$)
+ ;;
+ esac
+ case "$cmd" in
+ $lastcmd)
+ ;;
+ *)
+ case "$exclaim" in
+ yes)
+ cmd="`echo \"$cmd\" | sed -e 's@!@\\\\!@g'`"
+ ;;
+ esac
+
+ cat << ++++ >> $histfile
+$cmd
+++++
+ lastcmd=$cmd
+
+ case "$inc_cmdno" in
+ yes)
+ cmdno="`expr \"$cmdno\" + 1`"
+ # cmdno=$(( $cmdno + 1 ))
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+ esac
+
+ # The next commented-out line sets the prompt to include the command
+ # number -- you should only un-comment this if it is the ONLY thing
+ # you ever want as your prompt, because it will override attempts
+ # to set PS1 from the command level. If you want the command number
+ # in your prompt without sacrificing the ability to change the prompt
+ # later, replace the default setting for PS1 before the beginning of
+ # the main loop with the following: PS1='echo -n "${cmdno}% "'
+ # Doing it this way is, however, slower than the simple version below.
+
+ PS1="${cmdno}% "
+
+ getcmd=yes
+ echoit=no
+ exclaim=no
+done
+exit 0
+
+# Christine Robertson {linus, ihnp4, decvax}!utzoo!globetek!chris
# tabs in the lines might cause this to look a little bit off
#
#
+# Chet Ramey <chet.ramey@case.edu>
+#
+# Copyright 1999 Chester Ramey
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# TThis program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
width=${COLUMNS:-80}
--- /dev/null
+#! /bin/bash
+#
+# center - center a group of lines
+#
+# tabs in the lines might cause this to look a little bit off
+#
+#
+
+width=${COLUMNS:-80}
+
+if [[ $# == 0 ]]
+then
+ set -- /dev/stdin
+fi
+
+for file
+do
+ while read -r
+ do
+ printf "%*s\n" $(( (width+${#REPLY})/2 )) "$REPLY"
+ done < $file
+done
+
+exit 0
--- /dev/null
+#!/bin/sh
+
+# this is a line editor using only /bin/sh, /bin/dd and /bin/rm
+
+# /bin/rm is not really required, but it is nice to clean up temporary files
+
+PATH=
+dd=/bin/dd
+rm=/bin/rm
+
+# temporary files we might need
+tmp=/tmp/silly.$$
+ed=/tmp/ed.$$
+trap "$rm -f $tmp $tmp.1 $tmp.2 $tmp.3 $tmp.4 $tmp.5 $tmp.6 $ed.a $ed.b $ed.c; exit" 0 1 2 3
+
+# from now on, no more rm - the above trap is enough
+unset rm
+
+# we do interesting things with IFS, but better save it...
+saveIFS="$IFS"
+
+# in case "echo" is not a shell builtin...
+
+Echo () {
+case "$1" in
+ -n) shift
+ $dd of=$tmp 2>/dev/null <<EOF
+$@
+EOF
+ IFS="+"
+ set `$dd if=$tmp bs=1 of=/dev/null skip=1 2>&1`
+ IFS="$saveIFS"
+ $dd if=$tmp bs=1 count=$1 2>/dev/null
+ ;;
+ *) $dd 2>/dev/null <<EOF
+$@
+EOF
+ ;;
+esac
+}
+
+# this is used to generate garbage files
+
+true () {
+ return 0
+}
+
+false () {
+ return 1
+}
+
+zero () {
+ ( trap 'go=false' 13
+ go=true
+ while $go
+ do
+ $dd "if=$0"
+ case "$?" in
+ 0) ;;
+ *) go=false ;;
+ esac
+ done
+ ) 2>/dev/null
+}
+
+# arithmetic using dd!
+
+# add variable n1 n2 n3...
+# assigns n1+n2+n3+... to variable
+
+add () {
+ result="$1"
+ shift
+ $dd if=/dev/null of=$tmp bs=1 2>/dev/null
+ for n in "$@"
+ do
+ case "$n" in
+ 0) ;;
+ *) zero | $dd of=$tmp.1 bs=1 "count=$n" 2>/dev/null
+ ( $dd if=$tmp; $dd if=$tmp.1 ) 2>/dev/null | $dd of=$tmp.2 2>/dev/null
+ $dd if=$tmp.2 of=$tmp 2>/dev/null
+ ;;
+ esac
+ done
+ IFS="+"
+ set `$dd if=$tmp bs=1 of=/dev/null 2>&1`
+ IFS="$saveIFS"
+ eval $result='$1'
+}
+
+# subtract variable n1 n2
+# subtracts n2 from n1, assigns result to variable
+
+subtract () {
+ result="$1"
+ zero | $dd of=$tmp bs=1 "count=$2" 2>/dev/null
+ IFS="+"
+ set `$dd if=$tmp bs=1 of=/dev/null "skip=$3" 2>&1`
+ IFS="$saveIFS"
+ case "$1" in
+ dd*) set 0 ;;
+ esac
+ eval $result='$1'
+}
+
+# multiply variable n1 n2
+# variable = n1 * n2
+
+multiply () {
+ result="$1"
+ zero | $dd "bs=$2" of=$tmp "count=$3" 2>/dev/null
+ IFS="+"
+ set `$dd if=$tmp bs=1 of=/dev/null 2>&1`
+ IFS="$saveIFS"
+ eval $result='$1'
+}
+
+# divide variable n1 n2
+# variable = int( n1 / n2 )
+
+divide () {
+ result="$1"
+ zero | $dd bs=1 of=$tmp "count=$2" 2>/dev/null
+ IFS="+"
+ set `$dd if=$tmp "bs=$3" of=/dev/null 2>&1`
+ IFS="$saveIFS"
+ eval $result='$1'
+}
+
+# compare variable n1 n2 sets variable to lt if n1<n2, gt if n1>n2, eq if n1==n2
+
+compare () {
+ res="$1"
+ n1="$2"
+ n2="$3"
+ subtract somename "$n1" "$n2"
+ case "$somename" in
+ 0) ;;
+ *) eval $res=gt; return;
+ esac
+ subtract somename "$n2" "$n1"
+ case "$somename" in
+ 0) ;;
+ *) eval $res=lt; return;
+ esac
+ eval $res=eq
+}
+
+# lt n1 n2 returns true if n1 < n2
+
+lt () {
+ n1="$1"
+ n2="$2"
+ subtract somename "$n2" "$n1"
+ case "$somename" in
+ 0) return 1 ;;
+ esac
+ return 0
+}
+
+# le n1 n2 returns true if n1 <= n2
+
+le () {
+ n1="$1"
+ n2="$2"
+ subtract somename "$n1" "$n2"
+ case "$somename" in
+ 0) return 0 ;;
+ esac
+ return 1
+}
+
+# gt n1 n2 returns true if n1 > n2
+
+gt () {
+ n1="$1"
+ n2="$2"
+ subtract somename "$n1" "$n2"
+ case "$somename" in
+ 0) return 1 ;;
+ esac
+ return 0
+}
+
+# ge n1 n2 returns true if n1 >= n2
+
+ge () {
+ n1="$1"
+ n2="$2"
+ subtract somename "$n2" "$n1"
+ case "$somename" in
+ 0) return 0 ;;
+ esac
+ return 1
+}
+
+# useful functions for the line editor
+
+# open a file - copy it to the buffers
+
+open () {
+ file="$1"
+ set `$dd "if=$file" of=/dev/null 2>&1`
+ case "$1" in
+ dd*) return 1
+ esac
+ # copy the first line to $ed.c
+ go=true
+ len=0
+ while $go
+ do
+ case "`$dd "if=$file" bs=1 skip=$len count=1 2>/dev/null`" in
+ ?*) go=true ;;
+ *) go=false ;;
+ esac
+ add len 1 $len
+ done
+ # now $len is the length of the first line (including newline)
+ $dd "if=$file" bs=1 count=$len of=$ed.c 2>/dev/null
+ $dd "if=$file" bs=1 skip=$len of=$ed.b 2>/dev/null
+ $dd if=/dev/null of=$ed.a 2>/dev/null
+ lineno=1
+}
+
+# save a file - copy the buffers to the file
+
+save () {
+ # make a backup copy of the original
+ $dd "if=$1" "of=$1.bak" 2>/dev/null
+ # and save
+ ( $dd if=$ed.a; $dd if=$ed.c; $dd if=$ed.b ) > "$1" 2>/dev/null
+}
+
+# replace n1 n2 bla replaces n2 chars of current line, starting n1-th
+
+replace () {
+ $dd if=$ed.c of=$tmp.1 bs=1 "count=$1" 2>/dev/null
+ ( $dd if=$ed.c "skip=$1" bs=1 | $dd of=$tmp.2 bs=1 "skip=$2" ) 2>/dev/null
+ shift
+ shift
+ ( $dd if=$tmp.1; Echo -n "$@"; $dd if=$tmp.2 ) > $tmp.3 2>/dev/null
+ $dd if=$tmp.3 of=$ed.c 2>/dev/null
+}
+
+# rstring n s bla
+# replace the n-th occurence of s with bla
+
+rstring () {
+ n="$1"
+ shift;
+ # first we have to find it - this is fun!
+ # we have $tmp.4 => text before string, $tmp.5 => text after
+ $dd if=/dev/null of=$tmp.4 2>/dev/null
+ $dd if=$ed.c of=$tmp.5 2>/dev/null
+ string="$1"
+ shift
+ $dd of=$tmp.6 2>/dev/null <<EOF
+$@
+EOF
+ while :
+ do
+ case "`$dd if=$tmp.5 2>/dev/null`" in
+ $string*)
+ if lt $n 2
+ then
+ # now we want to replace the string
+ Echo -n "$@" > $tmp.2
+ Echo -n "$string" > $tmp.1
+ IFS="+"
+ set `$dd bs=1 if=$tmp.1 of=/dev/null 2>&1`
+ IFS="$saveIFS"
+ slen=$1
+ IFS="+"
+ ( $dd if=$tmp.4; $dd if=$tmp.2; $dd if=$tmp.5 bs=1 skip=$slen ) \
+ 2>/dev/null > $tmp
+ $dd if=$tmp of=$ed.c 2>/dev/null
+ return 0
+ else
+ subtract n $n 1
+ ( $dd if=$tmp.4; $dd if=$tmp.5 bs=1 count=1 ) > $tmp 2>/dev/null
+ $dd if=$tmp of=$tmp.4 2>/dev/null
+ # and remove it from $tmp.5
+ $dd if=$tmp.5 of=$tmp bs=1 skip=1 2>/dev/null
+ $dd if=$tmp of=$tmp.5 2>/dev/null
+ fi
+ ;;
+ ?*) # add one more byte...
+ ( $dd if=$tmp.4; $dd if=$tmp.5 bs=1 count=1 ) > $tmp 2>/dev/null
+ $dd if=$tmp of=$tmp.4 2>/dev/null
+ # and remove it from $tmp.5
+ $dd if=$tmp.5 of=$tmp bs=1 skip=1 2>/dev/null
+ $dd if=$tmp of=$tmp.5 2>/dev/null
+ ;;
+ *) # not found
+ return 1
+ ;;
+ esac
+ done
+}
+
+# skip to next line
+next () {
+ add l $lineno 1
+ ( $dd if=$ed.a; $dd if=$ed.c ) 2>/dev/null > $tmp.3
+ $dd if=$ed.b of=$tmp.4 2>/dev/null
+ open $tmp.4
+ $dd if=$tmp.3 of=$ed.a 2>/dev/null
+ lineno=$l
+}
+
+# delete current line
+delete () {
+ l=$lineno
+ $dd if=$ed.a 2>/dev/null > $tmp.1
+ $dd if=$ed.b of=$tmp.2 2>/dev/null
+ open $tmp.2
+ $dd if=$tmp.1 of=$ed.a 2>/dev/null
+ lineno=$l
+}
+
+# insert before current line (without changing current)
+insert () {
+ ( $dd if=$ed.a; Echo "$@" ) 2>/dev/null > $tmp.1
+ $dd if=$tmp.1 of=$ed.a 2>/dev/null
+ add lineno $lineno 1
+}
+
+# previous line
+prev () {
+ case "$lineno" in
+ 1) ;;
+ *) subtract lineno $lineno 1
+ # read last line of $ed.a
+ IFS='+'
+ set `$dd if=$ed.a of=/dev/null bs=1 2>&1`
+ IFS="$saveIFS"
+ size=$1
+ # empty?
+ case "$size" in
+ 0) return ;;
+ esac
+ subtract size $size 1
+ # skip final newline
+ case "$size" in
+ 0) ;;
+ *) subtract size1 $size 1
+ case "`$dd if=$ed.a bs=1 skip=$size count=1 2>/dev/null`" in
+ ?*) ;;
+ *) size=$size1 ;;
+ esac
+ ;;
+ esac
+ go=true
+ while $go
+ do
+ case "$size" in
+ 0) go=false ;;
+ *) case "`$dd if=$ed.a bs=1 skip=$size count=1 2>/dev/null`" in
+ ?*) go=true; subtract size $size 1 ;;
+ *) go=false; add size $size 1 ;;
+ esac
+ ;;
+ esac
+ done
+ # now $size is the size of the first n-1 lines
+ # add $ed.c to $ed.b
+ ( $dd if=$ed.c; $dd if=$ed.b ) 2>/dev/null > $tmp.5
+ $dd if=$tmp.5 of=$ed.b 2>/dev/null
+ # move line to ed.c
+ case "$size" in
+ 0) $dd if=$ed.a of=$ed.c 2>/dev/null
+ $dd if=/dev/null of=$tmp.5 2>/dev/null
+ ;;
+ *) $dd if=$ed.a of=$ed.c bs=1 skip=$size 2>/dev/null
+ $dd if=$ed.a of=$tmp.5 bs=1 count=$size 2>/dev/null
+ ;;
+ esac
+ # move rest to ed.a
+ $dd if=$tmp.5 of=$ed.a 2>/dev/null
+ ;;
+ esac
+}
+
+# goes to a given line
+goto () {
+ rl="$1"
+ compare bla "$rl" $lineno
+ case "$bla" in
+ eq) return
+ ;;
+ gt) while gt "$rl" $lineno
+ do
+ next
+ done
+ ;;
+ lt) while lt "$rl" $lineno
+ do
+ prev
+ done
+ ;;
+ esac
+}
+
+lineout () {
+ Echo -n "$lineno: "
+ $dd if=$ed.c 2>/dev/null
+}
+
+state=closed
+name=
+autoprint=true
+
+while true
+do
+ Echo -n '> '
+ read cmd arg
+ case "$cmd:$state" in
+ open:open) Echo "There is a file open already" ;;
+ open:*) if open "$arg"
+ then state=open; name="$arg"; $autoprint
+ else Echo "Cannot open $arg"
+ fi
+ ;;
+ new:open) Echo "There is a file open already" ;;
+ new:*) open "$arg"
+ state=open
+ name="$arg"
+ $autoprint
+ ;;
+ close:changed) Echo "Use 'discard' or 'save'" ;;
+ close:closed) Echo "Closed already" ;;
+ close:*) state=closed ;;
+ save:closed) Echo "There isn't a file to save" ;;
+ save:*) case "$arg" in
+ ?*) save "$arg" ;;
+ *) save "$name" ;;
+ esac
+ state=open
+ ;;
+ discard:changed) Echo "Your problem!"; state=closed ;;
+ discard:*) state=closed ;;
+ print:closed) Echo "No current file" ;;
+ print:*) lineout ;;
+ goto:closed) Echo "No current file" ;;
+ goto:*) goto "$arg"; $autoprint ;;
+ next:closed) Echo "No current file" ;;
+ next:*) next; $autoprint ;;
+ prev:closed) Echo "No current file" ;;
+ prev:*) prev; $autoprint ;;
+ name:closed) Echo "No current file" ;;
+ name:*) name="$arg" ;;
+ replace:closed) Echo "No current file" ;;
+ replace:*) if rstring 1 $arg
+ then state=changed; $autoprint
+ else Echo "Not found"
+ fi
+ ;;
+ nreplace:closed) Echo "No current file" ;;
+ nreplace:*) if rstring $arg
+ then state=changed; $autoprint
+ else Echo "Not found"
+ fi
+ ;;
+ delete:closed) Echo "No current file" ;;
+ delete:*) delete; state=changed; $autoprint ;;
+ insert:closed) Echo "No current file" ;;
+ insert:*) insert "$arg"; prev; state=changed; $autoprint ;;
+ quit:changed) Echo "Use 'save' or 'discard'" ;;
+ quit:*) Echo "bye"; exit;;
+ autoprint:*) autoprint="lineout" ;;
+ noprint:*) autoprint="" ;;
+ :*) ;;
+ *) Echo "Command not understood" ;;
+ esac
+done
+
--- /dev/null
+#! /bin/bash
+#
+# From: c2a192@ugrad.cs.ubc.ca (Kazimir Kylheku)
+# Newsgroups: comp.unix.shell,comp.os.linux.misc
+# Subject: GNU Bash Script to fix filenames
+# Date: 28 Mar 1996 14:54:43 -0800
+# Organization: Computer Science, University of B.C., Vancouver, B.C., Canada
+#
+#This is a script which takes a list of directories, descends through each one
+#and ``corrects'' filenames that:
+#
+# - contain filename globbing characters: * ? [ ]
+# - quote characters: ' "
+# - control characters: 0-31 (127 is not dealt with---oops)
+# - - or + as the first character
+#
+# The GNU version of 'tr' is required. Also requires 'sed'.
+#
+# Script to process a given list of directories recursively
+# and rename each file to something that is reasonable.
+#
+# The rules are:
+#
+# 1. replace each space, [, ], *, ", and ' character in the name with a
+# period.
+# 2. replace each control character 1..31 with a printable character obtained
+# by adding 64 to the ascii value. ^A becomes A, ^B becomes B and so on.
+# 3. replace a - or + occuring at the beginning of the name with a #
+#
+# 4. if the resulting name has been changed in any way, then
+# 5. if a file of the new name already exists, then
+# 6. add a . to the new name and goto step 5.
+# 7. rename the old name to the new name
+#
+# written by Kaz Kylheku <kaz@cafe.net>
+# March 1996
+# Vancouver, Canada
+#
+# requires GNU 'bash', GNU 'tr', and some sort of 'sed' program.
+#
+# minimal conversion to bash v2 syntax done by Chet Ramey
+
+processfile()
+{
+ new_name="`echo -n $1 | tr '\173\175\052\077\042\047 ' '.......' |
+ tr '[\000-\037]' '[\100-\137]' |
+ sed -e 's/^-/#/' -e 's/+/#/'`"
+ if [ "$new_name" != "$1" ] ; then
+ while [ -e "$new_name" ] ; do
+ new_name="${new_name}."
+ done
+ echo changing \"$1\" to \"$new_name\" in `pwd`
+ mv -- "$1" "$new_name"
+ fi
+}
+
+processdir()
+{
+ set -f
+ local savepwd="$PWD"
+ if cd "$1" ; then
+ set +f
+ for file in * ; do
+ set -f
+ if [ "$file" != "." ] && [ "$file" != ".." ] ; then
+ if [ -L "$file" ] ; then
+ echo "skipping symlink" $file in `pwd`
+ elif [ -d "$file" ] ; then
+ processdir "$file"
+ elif [ -f "$file" ] ; then
+ processfile "$file"
+ fi
+ fi
+ done
+ cd "$savepwd"
+ fi
+}
+
+shopt -s nullglob dotglob
+
+if [ $# = 0 ] ; then
+ echo "$0: must specify a list of directories" >&2
+ echo "$0: usage: $0 directory [directory ...]" >&2
+ exit 2
+fi
+
+while [ $# != 0 ] ; do
+ processdir "$1"
+ shift
+done
+
+exit 0
--- /dev/null
+# Towers of Hanoi in bash
+#
+# cribbed from the ksh93 book, example from exercises on page 85
+#
+# Chet Ramey
+# chet@po.cwru.edu
+
+hanoi() # n from to spare
+{
+ typeset -i nm1=$1-1
+ ((nm1>0)) && hanoi $nm1 $2 $4 $3
+ echo "Move disc $2 to $3"
+ ((nm1>0)) && hanoi $nm1 $4 $3 $2
+}
+
+case $1 in
+[1-9])
+ hanoi $1 1 2 3;;
+*) echo "${0##*/}: Argument must be from 1 to 9"
+ exit 1;;
+esac
--- /dev/null
+# Originally
+#
+# From: bsh20858@news.fhda.edu (Brian S Hiles)
+# Newsgroups: comp.unix.shell
+# Subject: Re: getting random numbers
+# Date: 23 Jan 1997 23:27:30 GMT
+# Message-ID: <5c8s52$eif@tiptoe.fhda.edu>
+
+# @(#) krand Produces a random number within integer limits
+# "krand" Korn shell script generates a random number in a
+# specified range with an optionally specified ``seed'' value.
+# Author: Peter Turnbull, May 1993
+# Modified by: Becca Thomas, January 1994
+
+# changed the optional third argument to a -s option, converted to
+# bash v2 syntax -- chet@po.cwru.edu
+
+PROGNAME=${0##*/}
+USAGE="usage: $PROGNAME [-s seed] lower-limit upper-limit"
+
+Seed=$$ # Initialize random-number seed value with PID
+
+usage()
+{
+ echo ${PROGNAME}: "$USAGE" >&2
+}
+
+errexit()
+{
+ echo ${PROGNAME}: "$@" >&2
+ exit 1
+}
+
+# Process command-line arguments:
+while getopts "s:" opt; do
+ case "$opt" in
+ s) Seed=$OPTARG ;;
+ *) usage ; exit 2;;
+ esac
+done
+
+shift $(($OPTIND - 1))
+
+case $# in
+ 2) Lower=$1; Upper=$2 ;;
+ *) usage ; exit 2;;
+esac
+
+# Check that specified values are integers:
+expr "$Lower" + 0 >/dev/null 2>&1
+[ $? -eq 2 ] && { errexit "lower ($Lower) not an integer"; }
+expr "$Upper" + 0 >/dev/null 2>&1
+[ $? -eq 2 ] && { errexit "upper ($Upper) not an integer"; }
+expr "$Seed" + 0 >/dev/null 2>&1
+[ $? -eq 2 ] && { errexit "seed ($Seed) not an integer"; }
+
+# Check that values are in the correct range:
+if (( "$Lower" < 0 )) || [ ${#Lower} -gt 5 ]; then
+ errexit "lower limit ($Lower) less than zero"
+fi
+if (( "$Upper" > 32767 )) || [ ${#Upper} -gt 5 ]; then
+ errexit "upper limit ($Upper) greater than 32767"
+fi
+if (( "$Seed" < 0 )) || (( "$Seed" > 32767 )) || [ ${#Seed} -gt 5 ]; then
+ errexit "seed value ($Seed) out of range (0 to 32767)"
+fi
+(( "$Upper" <= "$Lower" )) && errexit "upper limit ($Upper) <= lower limit ($Lower)"
+
+# Seed the random-number generator:
+RANDOM=$Seed
+# Compute value, scaled within range:
+let rand="$RANDOM % ($Upper - $Lower + 1) + $Lower"
+# Report result:
+echo $rand
--- /dev/null
+#! /bin/bash
+#
+#From: kaz@cafe.net (Kaz Kylheku)
+#Newsgroups: comp.unix.shell
+#Subject: Funky little bash script
+#Message-ID: <6mspb9$ft2@espresso.cafe.net>
+#Date: Thu, 25 Jun 1998 06:11:39 GMT
+
+#Here is something I wrote a few years ago when I was bored one day.
+#Warning: this contains control characters.
+
+# Line input routine for GNU Bourne-Again Shell
+# plus terminal-control primitives.
+#
+# by Kaz Kylheku
+# June 1996, Vancouver, Canada
+
+
+#
+# Function to disable canonical input processing.
+# Terminal modes are saved into variable "savetty"
+#
+#
+
+function raw
+{
+ savetty=$(stty -g)
+ stty -icanon -isig -echo -echok -echonl inlcr
+}
+
+#
+# Function to restore terminal settings from savetty variable
+#
+
+function restore
+{
+ stty $savetty
+}
+
+#
+# Set terminal MIN and TIME values.
+# If the input argument is a zero, set up terminal to wait for
+# a keystroke indefinitely. If the argument is non-zero, set up
+# an absolute timeout of that many tenths of a second. The inter-keystroke
+# timer facility of the terminal driver is not exploited.
+#
+
+function settimeout
+# $1 = tenths of a second
+{
+ if [ "$1" = "0" ] ; then
+ min=1
+ timeout=0
+ else
+ min=0
+ timeout="$1"
+ fi
+
+ stty min $min time $timeout
+
+ unset min timeout
+}
+
+#
+# Input a single key using 'dd' and echo it to standard output.
+# Launching an external program to get a single keystroke is a bit
+# of a pig, but it's the best you can do! Maybe we could convince the
+# GNU guys to make 'dd' a bash builtin.
+#
+
+function getkey
+{
+ eval $1="\"\$(dd bs=1 count=1 2> /dev/null)\""
+}
+
+#
+# Input a line of text gracefully.
+# The first argument is the name of a variable where the input line is
+# to be stored. If this variable is not empty, its contents are printed
+# and treated as though the user had entered them.
+# The second argument gives the maximum length of the input line; if it
+# is zero, the input is unlimited (bad idea).
+# ^W is used to delete words
+# ^R redraws the line at any time by backspacing over it and reprinting it
+# ^U backspaces to the beginning
+# ^H or ^? (backspace or del) delete a single character
+# ^M (enter) terminates the input
+# all other control keys are ignored and cause a beep when pressed
+#
+#
+
+
+function getline
+{
+ settimeout 0 # No keystroke timeout.
+ save_IFS="$IFS" # Save word delimiter and set it to
+ IFS="" # to null so ${#line} works correctly.
+ eval line=\${$1} # Fetch line contents
+ echo -n "$line" # and print the existing line.
+ while [ 1 ] ; do
+ getkey key # fetch a single keystroke
+ case "$key" in
+ \b | \7f ) # BS or DEL
+ if [ ${#line} != 0 ] ; then # if line not empty
+ echo -n "\b \b" # print destructive BS
+ line="${line%%?}" # chop last character
+ else # else if line empty
+ echo -n \a # beep the terminal
+ fi
+ ;;
+ \15 ) # kill to line beg
+ while [ ${#line} != 0 ] ; do # while line not empty
+ echo -n "\b \b" # print BS, space, BS
+ line="${line%?}" # shorten line by 1
+ done
+ ;;
+ \12 ) # redraw line
+ linesave="$line" # save the contents
+ while [ ${#line} != 0 ] ; do # kill to line beg
+ echo -n "\b \b"
+ line="${line%?}"
+ done
+ echo -n "$linesave" # reprint, restore
+ line="$linesave"
+ unset linesave # forget temp var
+ ;;
+ \17 )
+ while [ "${line% }" != "$line" ] && [ ${#line} != 0 ] ; do
+ echo -n "\b \b"
+ line="${line%?}"
+ done
+ while [ "${line% }" = "$line" ] && [ ${#line} != 0 ] ; do
+ echo -n "\b \b"
+ line="${line%?}"
+ done
+ ;;
+ \7f | \ 1 | \ 2 | \ 3 | \ 4 | \ 5 | \ 6 | \a | \b | \v | \f | \r )
+ echo -n \a # ignore various control characters
+ ;; # with an annoying beep
+ \ e | \ f | \10 | \11 | \12 | \13 | \14 | \15 | \16 | \17 | \18 | \19 | \1a )
+ echo -n \a
+ ;;
+ ' ' | \e | \1d | \1e | \1f | \1c )
+ echo -n \a
+ ;;
+ '' ) # Break out of loop on carriage return.
+ echo # Send a newline to the terminal.
+ break # (Also triggered by NUL char!).
+ ;;
+ * ) # Append character to the end of the line.
+ # If length is restricted, and the line is too
+ # long, then beep...
+
+ if [ "$2" != 0 ] && [ $(( ${#line} >= $2 )) = 1 ] ; then
+ echo -n \a
+ else # Otherwise add
+ line="$line$key" # the character.
+ echo -n "$key" # And echo it.
+ fi
+ ;;
+ esac
+ done
+ eval $1=\"\$line\"
+ IFS="$save_IFS"
+ unset line save_IFS
+}
+
+# uncomment the lines below to create a standalone test program
+#
+echo "Line input demo for the GNU Bourne-Again Shell."
+echo "Hacked by Kaz Kylheku"
+echo
+echo "Use ^H/Backspace/Del to erase, ^W to kill words, ^U to kill the"
+echo "whole line of input, ^R to redraw the line."
+echo "Pass an argument to this program to prime the buffer contents"
+raw
+echo -n "go: "
+if [ ${#1} != 0 ] ; then
+ LINE=$1
+fi
+getline LINE 50
+restore
+
+echo "<$LINE>"
--- /dev/null
+#
+# BASH VERSION OF nohup COMMAND
+#
+ctype()
+{
+ path=$(builtin type -p $cmd | sed 1q)
+ if [ -n "$path" ]; then
+ echo "$path"
+ return 0
+ else
+ case "$cmd" in
+ */*) [ -x "$cmd ] && { echo "$cmd" ; return 0; } ;;
+ *) case "$(builtin type -t $cmd)" in
+ "") return 1;;
+ *) echo "$cmd" ; return 0;;
+ esac ;;
+ esac
+ fi
+ return 1
+}
+
+trap '' HUP # ignore hangup
+command=$(ctype "$1")
+oldmask=$(umask)
+umask u=rw,og= # default mode for nohup.out
+exec 0< /dev/null # disconnect input
+if [ -t 1 ]; then # redirect output if necessary
+ if [ -w . ]; then
+ echo 'Sending output to nohup.out'
+ exec >> nohup.out
+ else echo "Sending output to $HOME/nohup.out"
+ exec >> $HOME/nohup.out
+ fi
+fi
+
+umask "$oldmask"
+
+# direct unit 2 to a file
+if [ -t 2 ]; then
+ exec 2>&1
+fi
+
+# run the command
+case $command in
+*/*) exec "$@"
+ ;;
+time) eval "$@"
+ ;;
+*) "$@"
+ ;;
+esac
--- /dev/null
+# @(#)precedence_test 1.0 91/07/24 Maarten Litmaath
+# test of relative precedences for `&&' and `||' operators
+
+echo "\`Say' echos its argument. Its return value is of no interest."
+case `echo -n` in
+ '') Say () { echo -n "$*" ; } ;;
+ *) Say () { echo "$*\c" ; } ;;
+esac
+
+echo "\`Truth' echos its argument and returns a TRUE result."
+Truth () {
+ Say $1;
+ return 0;
+}
+
+echo "\`False' echos its argument and returns a FALSE result."
+False () {
+ Say $1;
+ return 1;
+}
+
+echo ""
+
+cmd1='$open $test1 && $test2 $close || $test3'
+cmd2='$test1 || $open $test2 && $test3 $close'
+
+grouping_sh=
+grouping_C='( )'
+
+test3='Say 3'
+
+for i in 1 2
+do
+ eval proto=\$cmd$i
+
+ for test1 in 'Truth 1' 'False 1'
+ do
+ for test2 in 'Truth 2' 'False 2'
+ do
+ for precedence in sh C
+ do
+ eval set x \$grouping_$precedence
+ shift
+ open=${1-' '}
+ close=${2-' '}
+ eval cmd=\""$proto"\"
+ Say "$cmd output="
+ output=`eval "$cmd"`
+ Say "$output"
+ read correct || { echo 'Input fubar. Abort.' >&2; exit 1; }
+ test "X$output" = "X$correct" || echo " correct=$correct"
+ echo ''
+ done
+
+ echo ''
+ done
+ done
+done << EOF
+12
+12
+123
+123
+13
+13
+13
+13
+13
+1
+13
+1
+123
+123
+12
+12
+EOF
--- /dev/null
+# The following prints a random card from a card deck.
+#
+# cribbed from the ksh93 book, example from page 70
+#
+# chet@po.cwru.edu
+#
+declare -i i=0
+
+# load the deck
+for suit in clubs diamonds hearts spades; do
+ for n in ace 2 3 4 5 6 7 8 9 10 jack queen king; do
+ card[i]="$n of $suit"
+ i=i+1 # let is not required with integer variables
+ done
+done
+
+# and print a random card
+echo ${card[RANDOM%52]}
--- /dev/null
+#!/bin/bash
+#
+# scrollbar - display scrolling text
+#
+# usage: scrollbar args
+#
+# A cute hack originally from Heiner Steven <hs@bintec.de>
+#
+# converted from ksh syntax to bash v2 syntax by Chet Ramey
+
+WIDTH=${COLUMNS:-80}
+WMINUS=$(( $WIDTH - 1 ))
+
+[ $# -lt 1 ] && set -- TESTING
+
+# use the bash-2.02 printf builtin
+Text=$(printf "%-${WIDTH}s" "$*")
+Text=${Text// /_}
+
+while :
+do
+ printf "%-.${WIDTH}s\r" "$Text"
+ LastC=${Text:${WMINUS}:1}
+ Text="$LastC""${Text%?}"
+done
--- /dev/null
+#!/bin/bash
+#
+# scrollbar - display scrolling text
+#
+# usage: scrollbar args
+#
+# A cute hack originally from Heiner Steven <hs@bintec.de>
+#
+# converted from ksh syntax to bash v2 syntax by Chet Ramey
+
+WIDTH=${COLUMNS:-80}
+WMINUS=$(( $WIDTH - 1 ))
+
+[ $# -lt 1 ] && set -- TESTING
+
+# use the bash-2.02 printf builtin
+Text=$(printf "%-${WIDTH}s" "$*")
+
+while :
+do
+ printf "%-.${WIDTH}s\r" "$Text"
+ LastC=${Text:${WMINUS}:1}
+ Text="$LastC""${Text%?}"
+done
--- /dev/null
+# self-reproducing script (except for these comment lines -- remove them)
+# i got this from the ksh93 faq:
+# http://www.kornshell.com/doc/faq.html
+#
+n="
+" q="'" x="cat <<-!" y=! z='n="$n" q="$q" x="$x" y=$y z=$q$z$q$n$x$n$z$n$y'
+cat <<-!
+n="$n" q="$q" x="$x" y=$y z=$q$z$q$n$x$n$z$n$yb
+!
--- /dev/null
+#Newsgroups: comp.unix.shell
+#From: gwc@root.co.uk (Geoff Clare)
+#Subject: Re: Determining permissions on a file
+#Message-ID: <Dr79nw.DtL@root.co.uk>
+#Date: Fri, 10 May 1996 17:23:56 GMT
+
+#Here's a bit of Korn shell that converts the symbolic permissions produced
+#by "ls -l" into octal, using only shell builtins. How to create a script
+#combining this with an "ls -l" is left as an exercise...
+#
+#
+# Converted to Bash v2 syntax by Chet Ramey <chet@po.cwru.edu>
+#
+# usage: showperm modestring
+#
+# example: showperm '-rwsr-x--x'
+#
+
+[ -z "$1" ] && {
+ echo "showperm: usage: showperm modestring" >&2
+ exit 2
+}
+
+tmode="$1"
+
+typeset -i omode sbits
+typeset pmode
+
+# check for set-uid, etc. bits
+sbits=0
+case $tmode in
+???[sS]*) (( sbits += 8#4000 )) ;; # set-uid
+??????[sSl]*) (( sbits += 8#2000 )) ;; # set-gid or mand. lock
+?????????[tT]*) (( sbits += 8#1000 )) ;; # sticky
+esac
+
+omode=0
+while :
+do
+ tmode=${tmode#?}
+ case $tmode in
+ "") break ;;
+ [-STl]*) (( omode *= 2 )) ;;
+ [rwxst]*) (( omode = omode*2 + 1 )) ;;
+ *) echo "$0: first letter of \"$tmode\" is unrecognized" >&2
+ (( omode *= 2 ))
+ ;;
+ esac
+done
+
+(( omode += sbits ))
+
+printf "0%o\n" $omode
#
# Chet Ramey
# chet@ins.CWRU.Edu
+#
+# Copyright 2002 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
type=file
--- /dev/null
+#
+# shprompt -- give a prompt and get an answer satisfying certain criteria
+#
+# shprompt [-dDfFsy] prompt
+# s = prompt for string
+# f = prompt for filename
+# F = prompt for full pathname to a file or directory
+# d = prompt for a directory name
+# D = prompt for a full pathname to a directory
+# y = prompt for y or n answer
+#
+# Chet Ramey
+# chet@ins.CWRU.Edu
+
+type=file
+
+OPTS=dDfFsy
+
+succeed()
+{
+ echo "$1"
+ exit 0
+}
+
+while getopts "$OPTS" c
+do
+ case "$c" in
+ s) type=string
+ ;;
+ f) type=file
+ ;;
+ F) type=path
+ ;;
+ d) type=dir
+ ;;
+ D) type=dirpath
+ ;;
+ y) type=yesno
+ ;;
+ ?) echo "usage: $0 [-$OPTS] prompt" 1>&2
+ exit 2
+ ;;
+ esac
+done
+
+if [ "$OPTIND" -gt 1 ] ; then
+ shift $(( $OPTIND - 1 ))
+fi
+
+while :
+do
+ case "$type" in
+ string)
+ echo -n "$1" 1>&2
+ read ans || exit 1
+ if [ -n "$ans" ] ; then
+ succeed "$ans"
+ fi
+ ;;
+ file|path)
+ echo -n "$1" 1>&2
+ read ans || exit 1
+ #
+ # use `fn' and eval so that bash will do tilde expansion for
+ # me
+ #
+ eval fn="$ans"
+ case "$fn" in
+ /*) if test -e "$fn" ; then
+ succeed "$fn"
+ else
+ echo "$0: '$fn' does not exist" 1>&2
+ fi
+ ;;
+ *) if [ "$type" = "path" ] ; then
+ echo "$0: must give full pathname to file" 1>&2
+ else
+ if test -e "$fn" ; then
+ succeed "$fn"
+ else
+ echo "$0: '$fn' does not exist" 1>&2
+ fi
+ fi
+ ;;
+ esac
+ ;;
+ dir|dirpath)
+ echo -n "$1" 1>&2
+ read ans || exit 1
+ #
+ # use `fn' and eval so that bash will do tilde expansion for
+ # me
+ #
+ eval fn="$ans"
+ case "$fn" in
+ /*) if test -d "$fn" ; then
+ succeed "$fn"
+ elif test -e "$fn" ; then
+ echo "$0 '$fn' is not a directory" 1>&2
+ else
+ echo "$0: '$fn' does not exist" 1>&2
+ fi
+ ;;
+ *) if [ "$type" = "dirpath" ] ; then
+ echo "$0: must give full pathname to directory" 1>&2
+ else
+ if test -d "$fn" ; then
+ succeed "$fn"
+ elif test -e "$fn" ; then
+ echo "$0 '$fn' is not a directory" 1>&2
+ else
+ echo "$0: '$fn' does not exist" 1>&2
+ fi
+ fi
+ ;;
+ esac
+ ;;
+ yesno)
+ echo -n "$1" 1>&2
+ read ans || exit 1
+ case "$ans" in
+ y|Y|[yY][eE][sS])
+ succeed "yes"
+ ;;
+ n|N|[nN][oO])
+ succeed "no"
+ exit 0
+ ;;
+ *)
+ echo "$0: yes or no required" 1>&2
+ ;;
+ esac
+ ;;
+ esac
+done
+
+exit 1
# Chet Ramey
# chet@po.cwru.edu
#
+# Copyright 1997 Chester Ramey
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# TThis program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
bs=$'\b'
chars="|${bs} \\${bs} -${bs} /${bs}"
--- /dev/null
+#!/bin/bash
+#
+# spin.bash -- provide a `spinning wheel' to show progress
+#
+# Chet Ramey
+# chet@po.cwru.edu
+#
+bs=$'\b'
+
+chars="|${bs} \\${bs} -${bs} /${bs}"
+
+# Infinite loop for demo. purposes
+while :
+do
+ for letter in $chars
+ do
+ echo -n ${letter}
+ done
+done
+
+exit 0
--- /dev/null
+#Newsgroups: comp.unix.admin,comp.unix.solaris,comp.unix.shell
+#From: gwc@root.co.uk (Geoff Clare)
+#Subject: Re: timeout -t <sec> <unix command> (Re: How to give rsh a shorter timeout?)
+#Message-ID: <EoBxrs.223@root.co.uk>
+#Date: Fri, 13 Feb 1998 18:23:52 GMT
+
+#
+# Conversion to bash v2 syntax done by Chet Ramey <chet@po.cwru.edu
+# UNTESTED
+#
+
+prog=${0##*/}
+usage="usage: $prog [-signal] [timeout] [:interval] [+delay] [--] <command>"
+
+SIG=-TERM # default signal sent to the process when the timer expires
+timeout=60 # default timeout
+interval=15 # default interval between checks if the process is still alive
+delay=2 # default delay between posting the given signal and
+ # destroying the process (kill -KILL)
+
+while :
+do
+ case $1 in
+ --) shift; break ;;
+ -*) SIG=$1 ;;
+ [0-9]*) timeout=$1 ;;
+ :*) EXPR='..\(.*\)' ; interval=`expr x"$1" : "$EXPR"` ;;
+ +*) EXPR='..\(.*\)' ; delay=`expr x"$1" : "$EXPR"` ;;
+ *) break ;;
+ esac
+ shift
+done
+
+case $# in
+0) echo "$prog: $usage" >&2 ; exit 2 ;;
+esac
+
+(
+ for t in $timeout $delay
+ do
+ while (( $t > $interval ))
+ do
+ sleep $interval
+ kill -0 $$ || exit
+ t=$(( $t - $interval ))
+ done
+ sleep $t
+ kill $SIG $$ && kill -0 $$ || exit
+ SIG=-KILL
+ done
+) 2> /dev/null &
+
+exec "$@"
--- /dev/null
+#!/bin/sh
+
+# Author: P@draigBrady.com
+# V1.0 : Nov 3 2006
+#
+# Execute a command with a timeout.
+# If the timeout occurs the exit status is 128
+#
+# Note there is an asynchronous equivalent of this
+# script packaged with bash (under /usr/share/doc/ in my distro),
+# which I only noticed after writing this.
+
+if [ "$#" -lt "2" ]; then
+ echo "Usage: `basename $0` timeout_in_seconds command" >&2
+ echo "Example: `basename $0` 2 sleep 3 || echo timeout" >&2
+ exit 1
+fi
+
+cleanup()
+{
+ kill %1 2>/dev/null #kill sleep $timeout if running
+ kill %2 2>/dev/null && exit 128 #kill monitored job if running
+}
+
+set -m #enable job control
+trap "cleanup" 17 #cleanup after timeout or command
+timeout=$1 && shift #first param is timeout in seconds
+sleep $timeout& #start the timeout
+"$@" #start the job
--- /dev/null
+#!/bin/bash
+#
+# The Bash script executes a command with a time-out.
+# Based on the Bash documentation example.
+#
+# Upon time-out expiration SIGTERM (15) is sent to the process. If the signal
+# is blocked, then the subsequent SIGKILL (9) terminates it.
+# Dmitry V Golovashkin (E-mail: dvg@ieee.org)
+#
+script_name="${0##*/}"
+
+# Default values.
+readonly param_timeout=5
+readonly param_interval=1
+readonly param_delay=1
+
+declare -i timeout=param_timeout
+declare -i interval=param_interval
+declare -i delay=param_delay
+
+blue="$(tput setaf 4)"
+bold_red="$(tput bold; tput setaf 1)"
+off="$(tput sgr0)"
+
+function print_usage() {
+cat <<EOF
+
+Synopsis: $script_name [-t timeout] [-i interval] [-d delay] command
+
+Executes the command with a time-out. Upon time-out expiration SIGTERM (15) is
+sent to the process. If SIGTERM signal is blocked, then the subsequent SIGKILL
+(9) terminates it.
+
+$blue-t timeout$off
+ Number of seconds to wait for command completion.
+ Default value: $param_timeout seconds. In some practical situations
+ this value ${bold_red}must$off be increased (for instance -t 180) to allow
+ the command to complete.
+
+$blue-i interval$off
+ Interval between checks if the process is still alive.
+ Positive integer, default value: $param_interval seconds.
+ Default value is OK for most situations.
+
+$blue-d delay$off
+ Delay between posting the SIGTERM signal and destroying the process by
+ SIGKILL. Default value: $param_delay seconds.
+ Default value is OK for most situations.
+
+As of today, Bash does not support floating point arithmetic (sleep does),
+therefore all time values must be integers.
+Dmitry Golovashkin (E-mail: dvg@ieee.org)
+EOF
+exit 1 # No useful work was done.
+}
+
+# Options.
+while getopts ":t:i:d:" option; do
+ case "$option" in
+ t) timeout=$OPTARG ;;
+ i) interval=$OPTARG ;;
+ d) delay=$OPTARG ;;
+ *) print_usage ;;
+ esac
+done
+shift $((OPTIND - 1))
+
+# $# should be at least 1 (the command to execute), however it may be strictly
+# greater than 1 if the command itself has options.
+if (($# == 0 || interval <= 0)); then
+ print_usage
+fi
+
+# kill -0 pid Exit code indicates if a signal may be sent to "pid" process.
+(
+ ((t = timeout))
+
+ while ((t > 0)); do
+ sleep $interval
+ kill -0 $$ || exit 0
+ ((t -= interval))
+ done
+
+ # Be nice, post SIGTERM first.
+ # The 'exit 0' below will be executed if any preceeding command fails.
+ kill -s SIGTERM $$ && kill -0 $$ || exit 0
+ sleep $delay
+ kill -s SIGKILL $$
+) 2> /dev/null &
+
+exec "$@"
+
--- /dev/null
+#!/bin/bash
+#
+# vtree - make a tree printout of the specified directory, with disk usage
+# in 1k blocks
+#
+# usage: vtree [-a] [dir]
+#
+# Original posted to Usenet sometime in February, 1996
+# I believe that the original author is Brian S. Hiles <bsh29256@atc.fhda.edu>
+#
+usage()
+{
+ echo "vtree: usage: vtree [-a] [dir]" >&2
+}
+
+while getopts a opt
+do
+ case "$opt" in
+ a) andfiles=-a ;;
+ *) usage ; exit 2 ;;
+ esac
+done
+
+shift $((OPTIND - 1))
+
+export BLOCKSIZE=1k # 4.4 BSD systems need this
+
+[ $# -eq 0 ] && set .
+
+while [ $# -gt 0 ]
+do
+ cd "$1" || { shift; [ $# -ge 1 ] && echo >&2; continue; }
+ echo -n "$PWD"
+
+ du $andfiles | sort -k 2f | sed \
+ -e 's/\([^ ]*\) \(.*\)/\2 (\1)/' \
+ -e "s#^$1##" \
+ -e 's#[^/]*/\([^/]*\)$#|____\1#' \
+ -e 's#[^/]*/#| #g'
+
+ [ $# -gt 1 ] && echo
+ shift
+done
--- /dev/null
+#!/bin/ksh
+#
+# Name: dirtree
+# Programmer:
+# Hemant T. Shah
+# Life Insurance Data Processing
+# July 12 1994
+#
+# Description:
+# Print directory tree structure as follows:
+# |___Mail
+# |___scheduler
+# |___cics_scripts
+# |___tar_msdos
+# |___awk
+# |___attributes
+# |___tmp
+# |___News
+# |___dosscsi
+# |___FAQ_xterminal
+# |___shell_history.Z
+# |___FAQ_AIX
+# |___aix_ftp_site
+# |___hp_software
+# |___dnload
+# |___telnet.h
+# |___msdos
+# |___tnetd.tar.Z
+# |___aix
+# |___hp
+# |___xkey.c
+#
+# Conversion to bash v2 syntax done by Chet Ramey
+# - removed command substitutions calling `basename'
+#
+
+ProgramName=${0##*/}
+Path="."
+ShowAll=1
+ShowDir=0
+
+
+ExpandDirectory()
+{
+local object # Local variable
+
+cd "$1"
+
+for object in $PWD/.??* $PWD/*
+do
+ if [ -d $object ]; # It is a directory
+ then
+ echo "${indent}|___${object##*/}/"
+ indent="${indent}! " # Add to indentation
+ if [ -x $object ];
+ then
+ ExpandDirectory $object
+ fi
+ indent=${indent%????} # Remove from indentation
+ elif [ -e $object ]; then
+ if (( ShowAll == 1 ));
+ then
+ echo "${indent}|___${object##*/}"
+ fi
+ fi
+done
+
+}
+
+usage()
+{
+ echo -e "Usage: $ProgramName [-h] [-f] [-d] [path] "
+ echo -e "\t-h ... display this help message."
+ echo -e "\t-f path ... shows all files and directories below path (default)."
+ echo -e "\t-d path ... shows all directories only below path."
+}
+
+while getopts "fd" opt
+do
+ case $opt in
+ f) ShowAll=1 ;;
+ d) ShowDir=1 ;;
+ *) usage ; exit 2;;
+ esac
+done
+
+shift $(( $OPTIND - 1 ))
+
+Path=${1:-.}
+
+if [ ! -d "$Path" ]; then
+ echo "$0: error: specified path is not a directory." >&2
+ exit 1
+fi
+
+
+
+echo "!$Path/"
+ExpandDirectory $Path
--- /dev/null
+#!/bin/bash
+#
+# Name: dirtree
+# Programmer:
+# Hemant T. Shah
+# Life Insurance Data Processing
+# July 12 1994
+#
+# Description:
+# Print directory tree structure as follows:
+# |___Mail
+# |___scheduler
+# |___cics_scripts
+# |___tar_msdos
+# |___awk
+# |___attributes
+# |___tmp
+# |___News
+# |___dosscsi
+# |___FAQ_xterminal
+# |___shell_history.Z
+# |___FAQ_AIX
+# |___aix_ftp_site
+# |___hp_software
+# |___dnload
+# |___telnet.h
+# |___msdos
+# |___tnetd.tar.Z
+# |___aix
+# |___hp
+# |___xkey.c
+#
+# Conversion to bash v2 syntax done by Chet Ramey
+# - removed command substitutions calling `basename'
+#
+
+ProgramName=${0##*/}
+Path="."
+ShowAll=1
+ShowDir=0
+
+
+ExpandDirectory()
+{
+local object # Local variable
+
+cd "$1"
+
+for object in $PWD/.??* $PWD/*
+do
+ if [ -d $object ]; # It is a directory
+ then
+ echo "${indent}|___${object##*/}/"
+ indent="${indent}! " # Add to indentation
+ if [ -x $object ];
+ then
+ ExpandDirectory $object
+ fi
+ indent=${indent%????} # Remove from indentation
+ elif [ -e $object ]; then
+ if (( ShowAll == 1 ));
+ then
+ echo "${indent}|___${object##*/}"
+ fi
+ fi
+done
+
+}
+
+usage()
+{
+ echo -e "Usage: $ProgramName [-h] [-f] [-d] [path] "
+ echo -e "\t-h ... display this help message."
+ echo -e "\t-f path ... shows all files and directories below path (default)."
+ echo -e "\t-d path ... shows all directories only below path."
+}
+
+while getopts "fd" opt
+do
+ case $opt in
+ f) ShowAll=1 ;;
+ #d) ShowDir=1 ;;
+ d) ShowAll=0 ;;
+ *) usage ; exit 2;;
+ esac
+done
+
+shift $(( $OPTIND - 1 ))
+
+Path=${1:-.}
+
+if [ ! -d "$Path" ]; then
+ echo "$0: error: specified path is not a directory." >&2
+ exit 1
+fi
+
+
+
+echo "!$Path/"
+ExpandDirectory $Path
--- /dev/null
+#!/bin/sh
+#for instructions or updates go to:
+#<A HREF="http://math.ucr.edu:8889/">This script's home page</A>
+#email me questions or comments at:
+#<A HREF="mailto:insom@math.ucr.edu">insom@math.ucr.edu</A>
+#copyright chris ulrich; This software may be used or modified
+#in any way so long as this notice remains intact.
+#
+# WWW server in sh
+# Author: Chris Ulrich <chris@tinker.ucr.edu>
+#
+
+INDEX=index.html
+date=`date`
+DOCHOME=/home/insom/web-docs
+BINHOME=/home/insom/web-bin
+LOGHOME=/home/insom/web-logs
+LOGFILE=$LOGHOME/access_log
+#verbose=:
+verbose=echo
+exec 2>> $LOGHOME/error_log
+
+hheader() {
+echo "HTTP/1.0 200 OK
+Server: WebSH/2.00
+Connection: close
+Date: $date"
+}
+
+header() {
+echo "Content-type: $1
+"
+}
+
+no_url() {
+ header "text/plain"
+ echo "No such url $1"
+}
+
+send() {
+ #case "$#" in 2) ;; *) echo eep! | mailx insom@math.ucr.edu ; exit 3 ;; esac
+ if test -f "$DOCHOME/$2"
+ then
+ header "$1"
+ cat "$DOCHOME/$2"
+ else
+ no_url "$2"
+ fi
+}
+
+LsToHTML() {
+ if test -f "$DOCHOME/$url/.title"
+ then
+ header "text/html; charset=US-ASCII"
+ echo "<pre>"
+ cat "$DOCHOME/$url/.title"
+ echo "</pre>"
+ elif test -f "$DOCHOME/$url/.title.html"
+ then
+ header "text/html; charset=US-ASCII"
+ cat "$DOCHOME/$url/.title.html"
+ else
+ header "text/html; charset=US-ASCII"
+ fi
+
+ case "$url" in
+ /) ;;
+ *) url="$url/"
+ esac
+
+ while read link
+ do
+ case $link in
+ *.cgi) ;;
+ *)
+ echo "<A HREF=\"$url$link\">$link</A> <BR>"
+ ;;
+ esac
+ done
+}
+
+read method data
+
+$verbose "
+$date access from ${TCPREMOTEINFO:=NO-IDENT}@${TCPREMOTEHOST:=$TCPREMOTEIP}
+ on local machine $TCPLOCALHOST
+ $method $data " >> $LOGFILE
+
+for hopeurl in $data
+do
+ url="${url}${url:+ }$second"
+ second="$hopeurl"
+done
+
+case "$second" in
+ *[1-9].*)
+ read inheader
+ while
+ case "$inheader" in
+ ?|'') false
+ ;;
+ *)
+ read inheader
+ ;;
+ esac
+ do
+ :
+ done
+ hheader
+ ;;
+esac
+
+case "$url" in
+ *..*)
+ no_url "$url"
+ exit 1
+ ;;
+ *.txt|*.[ch])
+ send "text/plain; charset=US-ASCII" "$url"
+ ;;
+ *.html)
+ send "text/html; charset=US-ASCII" "$url"
+ ;;
+ *.cgi)
+ if test -x "$DOCHOME/$url"
+ then
+ read message
+ echo "$message" | "$DOCHOME/$url"
+ else
+ no_url "$url"
+ fi
+ ;;
+ *".cgi?"*)
+ oIFS="$IFS"
+ echo "$url" | {
+ IFS='?' read url QUERY_STRING
+ if test -x "$DOCHOME/$url"
+ then
+ IFS="$oIFS"
+ export QUERY_STRING
+ "$DOCHOME/$url"
+ else
+ no_url "$url"
+ fi
+ }
+ ;;
+ *.[Gg][Ii][Ff])
+ send "image/gif" "$url"
+ ;;
+ *.[Jj][Pp][Gg]|*.[Jj][Pp][Ee][Gg])
+ send "image/jpeg" "$url"
+ ;;
+ *.tbl)
+ header "text/html; charset=US-ASCII"
+ echo "<pre>"
+ test -f "$DOCHOME/$url" &&
+ tbl < "$DOCHOME/$url" | nroff ||
+ no_url "$url"
+ echo "</pre>"
+ ;;
+ *.nroff)
+ header "text/html; charset=US-ASCII"
+ echo "<pre>"
+ test -f "$DOCHOME/$url" &&
+ nroff < "$DOCHOME/$url" ||
+ no_url "$url"
+ echo "</pre>"
+ ;;
+ *mp[23])
+ if test -f "$DOCHOME/$url"
+ then
+ header "application/mpstream"
+ echo "+$TCPLOCALIP:${MPSERVPORT:=9001}/$url"
+ else
+ no_url "$url"
+ fi
+ ;;
+ *.[0-9]|*.[0-9][a-z])
+ header "text/html; charset=US-ASCII"
+ echo "<pre>"
+ if test -f "$DOCHOME/$url"
+ then
+ #nroff -man "$DOCHOME/$url" | $BINHOME/man2html
+ echo "perl at the moment is broken, so man2html doesn't work. Sorry."
+ echo "</pre>"
+ else
+ no_url "$url"
+ fi
+ ;;
+ *.???|*.??)
+ send "unknown/data" "$url"
+ ;;
+ */)
+ if test -d "$DOCHOME/$url"
+ then
+ ls "$DOCHOME/$url" | LsToHTML
+ fi
+ ;;
+ *)
+ if test -f "$DOCHOME/$url"
+ then
+ read filetype < "$DOCHOME/$url"
+ case "$filetype" in
+ \#!/*/*|\#!?/*/*)
+ header "text/plain; charset=US-ASCII"
+ cat "$DOCHOME/$url"
+ ;;
+ '<!*>')
+ header "text/html; charset=US-ASCII"
+ cat "$DOCHOME/$url"
+ ;;
+ *)
+ header "text/html; charset=US-ASCII"
+ echo "<pre>"
+ cat "$DOCHOME/$url"
+ echo "</pre>"
+ ;;
+ esac
+ elif test -f "$DOCHOME/$url/$INDEX"
+ then
+ header "text/html; charset=US-ASCII"
+ cat "$DOCHOME/$url/$INDEX"
+ elif test -d "$DOCHOME/$url"
+ then
+ ls "$DOCHOME/$url" | LsToHTML
+ else
+ no_url "$url"
+ fi
+ ;;
+esac
#
# Derived from http://www.clark.net/pub/dickey/xterm/xterm.faq.html#how2_title
#
+
+# Copyright 1997 Chester Ramey
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# TThis program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
P=${0##*/}
[ -z "$DISPLAY" ] && {
echo "${P}: not running X" >&2
--- /dev/null
+#! /bin/bash
+#
+# xterm_title - print the contents of the xterm title bar
+#
+# Derived from http://www.clark.net/pub/dickey/xterm/xterm.faq.html#how2_title
+#
+P=${0##*/}
+[ -z "$DISPLAY" ] && {
+ echo "${P}: not running X" >&2
+ exit 1
+}
+
+if [ -z "$TERM" ] || [ "$TERM" != "xterm" ]; then
+ echo "${P}: not running in an xterm" >&2
+ exit 1
+fi
+
+exec </dev/tty
+old=$(stty -g)
+stty raw -echo min 0 time ${1-10}
+echo -e "\033[21t\c" > /dev/tty
+IFS='' read -r a
+stty $old
+b=${a#???}
+echo "${b%??}"
+
+exit 0
# Chet Ramey
# chet@po.cwru.edu
+# Copyright 1996 Chester Ramey
+#
+# 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.
+#
+# TThis 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 02111-1307, USA.
+
+
[ $# -lt 1 ] && {
echo "zprintf: usage: zprintf format [args ...]" >&2
exit 2
--- /dev/null
+#! /bin/bash
+#
+# zprintf - function that calls gawk to do printf for those systems that
+# don't have a printf executable
+#
+# The format and arguments can have trailing commas, just like gawk
+#
+# example:
+# zprintf 'Eat %x %x and suck %x!\n' 57005 48879 64206
+#
+# Chet Ramey
+# chet@po.cwru.edu
+
+[ $# -lt 1 ] && {
+ echo "zprintf: usage: zprintf format [args ...]" >&2
+ exit 2
+}
+
+fmt="${1%,}"
+shift
+
+for a in "$@"; do
+ args="$args,\"${a%,}\""
+done
+
+gawk "BEGIN { printf \"$fmt\" $args }"
bashrc Sample Bourne Again SHell init file (Ramey).
Bashrc.bfox Sample Bourne Again SHell init file (Fox).
README README
-
-apple Example Start-up files for Mac OS X.
-apple/aliases Sample aliases for Mac OS X.
-apple/bash.defaults Sample User preferences file.
-apple/environment Sample Bourne Again Shell environment file.
-apple/login Sample login wrapper.
-apple/logout Sample logout wrapper.
-apple/rc Sample Bourne Again Shell config file.
-apple/README README
--- /dev/null
+Some sample startup files. The ones starting with capital letters
+are originally from Brian Fox. The ones starting with lowercase
+letters are from Chet Ramey.
+
+They will require changes for your environment.
+
+Bash_aliases Some useful aliases (Fox).
+Bash_profile Sample startup file for bash login shells (Fox).
+bash-profile Sample startup file for bash login shells (Ramey).
+bashrc Sample Bourne Again SHell init file (Ramey).
+Bashrc.bfox Sample Bourne Again SHell init file (Fox).
+README README
+
+apple Example Start-up files for Mac OS X.
+apple/aliases Sample aliases for Mac OS X.
+apple/bash.defaults Sample User preferences file.
+apple/environment Sample Bourne Again Shell environment file.
+apple/login Sample login wrapper.
+apple/logout Sample logout wrapper.
+apple/rc Sample Bourne Again Shell config file.
+apple/README README
--- /dev/null
+This directory contains some useful bash files.
+
+In order to use this configuration:
+
+ echo "source ~/.bashrc" > ~/.profile
+ echo "source /usr/share/init/bash/rc" > ~/.bashrc
+ echo "source /usr/share/init/bash/login" > ~/.login
+
+In order to customize this setup:
+
+ mkdir ~/Library/init/bash
+
+and create the following files there as necessary:
+
+ aliases.mine - shell aliases
+ completions.mine - completions
+ environment.mine - environment
+ rc.mine - run commands
+ path - command search path
+
+See the corresponding file in /usr/share/init/bash for more information about the role of each file. You can easily extend or override the configuration provided by the default file. For example, you can add more aliases by adding the appropriate commands in aliases.mine.
+
+ -Fred
+ tritan@mit.edu
+
+
+aliases Sample aliases for Mac OS X.
+bash.defaults Sample User preferences file.
+environment Sample Bourne Again Shell environment file.
+login Sample login wrapper.
+logout Sample logout wrapper.
+rc Sample Bourne Again Shell config file.
+README README
--- /dev/null
+##
+# Bash aliases file
+#
+# Wilfredo Sanchez Jr. | tritan@mit.edu
+##
+
+##
+# Aliases
+##
+
+alias .='cwd'
+alias ..='cd ..'
+alias cd..='cd ..'
+alias cdwd='cd $(/bin/pwd)'
+alias cwd='echo $PWD'
+alias l='ls -lg'
+
+##
+# Functions
+##
+
+files () { find ${1} -type f -print ; }
+ff () { find . -name ${1} -print ; }
+ll () { ls -lag "$@" | more ; }
+word () { fgrep -i "$*" /usr/dict/web2 ; }
+wordcount () { cat "${1}" | tr -s ' .,;:?\!()[]"' '\012' | \
+ awk 'END {print NR}' ; }
+
+##
+# Read user's aliases
+##
+if [ -r ${bash_initdir}/aliases.mine ]; then
+ source ${bash_initdir}/aliases.mine
+fi
--- /dev/null
+##
+# Bash
+# User preferences file
+# Override these in rc.mine
+#
+# Wilfredo Sanchez Jr. | tritan@mit.edu
+# July 09, 1992
+#
+# MIT Project Athena
+##
+
+if [ -n "$PS1" ]; then
+
+ # Prompts
+ PS1='[\h:\w] \u\$ '
+ PS2=' -> '
+ #PS3=
+ #PS4=
+
+ set -o emacs
+
+fi
--- /dev/null
+##
+# Bourne Again Shell environment file
+# Global environment setup
+#
+# Wilfredo Sanchez Jr. | tritan@mit.edu
+# July 09, 1992
+#
+# MIT Project Athena
+#
+# ORIGINAL SOURCES: /usr/athena/lib/init/cshrc (ATHENA REL 7.3P)
+##
+
+export ENV_SET="YES" # avoid repeat
+
+# File creation mask
+umask 022 # all files created are -rw-r--r--
+
+##
+# Load user environment
+##
+
+if [ -f ${bash_initdir}/environment.mine ]; then
+ source ${bash_initdir}/environment.mine
+fi
--- /dev/null
+##
+# Set path
+##
+
+export PATH="${HOME}/${MACHTYPE}/bin:${HOME}/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
+
+export MANPATH="${HOME}/man:/usr/local/share/man:/usr/share/man"
+
+##
+# Read user's login
+##
+
+if (-r ${bash_initdir}/login.mine) then
+ source ${bash_initdir}/login.mine
+fi
--- /dev/null
+##
+# Destroy credentials
+##
+
+if [ -z "${TERM_PROGRAM}" ]; then
+ # Don't run these commands if the shell is launched by Terminal,
+ # even if it's a login shell.
+
+ if klist -s; then kdestroy; fi
+fi
--- /dev/null
+##
+# Bourne Again Shell config file
+#
+# Wilfredo Sanchez Jr. | tritan@mit.edu
+# July 09, 1992
+#
+# MIT Project Athena
+#
+# ORIGINAL SOURCES: /usr/athena/lib/init/cshrc (ATHENA REL 7.3P)
+##
+
+ default_initdir=/usr/share/init
+default_bash_initdir=${default_initdir}/bash
+ user_initdir=~/Library/init
+ user_bash_initdir=${user_initdir}/bash
+
+if [ -r ${user_bash_initdir} ]; then
+ initdir=${user_initdir}
+ bash_initdir=${user_bash_initdir}
+else
+ initdir=${default_initdir}
+ bash_initdir=${default_bash_initdir}
+fi
+
+# SET UP HOST-DEPENDANT VARIABLES, ETC.
+
+host=$(echo $(hostname) | tr A-Z a-z)
+
+user=`whoami`
+
+export HOST=${host}
+export USER=${user}
+
+# User ID
+if [ -z "${uid}" ]; then uid=$(id | cut -d = -f 2 | cut -d \( -f 1); fi
+
+# SET COMMAND SEARCH PATH AND MAN PATH
+if [ -f ${bash_initdir}/path ]; then source ${bash_initdir}/path; fi
+
+# ENVIRONMENT SETUP
+
+if [ -n "${PS1}" ]; then interactive="YES"; fi
+
+if [ -z "${ENV_SET}" ]; then
+ if [ -f ${default_bash_initdir}/environment ]; then
+ #echo "Initializing environment..."
+ source ${default_bash_initdir}/environment
+ fi
+fi
+
+if [ -r ${default_bash_initdir}/bash.defaults ]; then
+ source ${default_bash_initdir}/bash.defaults
+fi
+
+# DEFAULT LOGIN SOURCES
+if [ -f ${bash_initdir}/rc.mine ]; then source ${bash_initdir}/rc.mine; fi
+
+if [ "${interactive}" = "YES" ]; then
+ # These aren't useful for non-interactive sessions
+ if [ -f ${default_bash_initdir}/aliases ]; then
+ source ${default_bash_initdir}/aliases
+ fi
+fi
#endif
/* Last child made by the shell. */
-pid_t last_made_pid = NO_PID;
+volatile pid_t last_made_pid = NO_PID;
/* Pid of the last asynchronous child. */
-pid_t last_asynchronous_pid = NO_PID;
+volatile pid_t last_asynchronous_pid = NO_PID;
/* The pipeline currently being built. */
PROCESS *the_pipeline = (PROCESS *)NULL;
sigemptyset (&act.sa_mask);
sigemptyset (&oact.sa_mask);
act.sa_flags = 0;
- sigaction (SIGCHLD, &act, &oact);
+# 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 */
extern struct jobstats js;
extern pid_t original_pgrp, shell_pgrp, pipeline_pgrp;
-extern pid_t last_made_pid, last_asynchronous_pid;
+extern volatile pid_t last_made_pid, last_asynchronous_pid;
extern int asynchronous_notification;
extern JOB **jobs;
/* Block all signals in case we are executed from a signal handler. */
blocked_sigs = 0;
#ifdef SHELL
+# if defined (SIGCHLD)
if (interrupt_immediately || running_trap || signal_is_trapped (SIGINT) || signal_is_trapped (SIGCHLD))
+# else
+ if (interrupt_immediately || running_trap || signal_is_trapped (SIGINT))
+# endif
#endif
{
_malloc_block_signals (&set, &oset);
--- /dev/null
+/* malloc.c - dynamic memory allocation for bash. */
+
+/* Copyright (C) 1985-2005 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/>.
+*/
+
+/*
+ * @(#)nmalloc.c 1 (Caltech) 2/21/82
+ *
+ * U of M Modified: 20 Jun 1983 ACT: strange hacks for Emacs
+ *
+ * Nov 1983, Mike@BRL, Added support for 4.1C/4.2 BSD.
+ *
+ * This is a very fast storage allocator. It allocates blocks of a small
+ * number of different sizes, and keeps free lists of each size. Blocks
+ * that don't exactly fit are passed up to the next larger size. In this
+ * implementation, the available sizes are (2^n)-4 (or -16) bytes long.
+ * This is designed for use in a program that uses vast quantities of
+ * memory, but bombs when it runs out. To make it a little better, it
+ * warns the user when he starts to get near the end.
+ *
+ * June 84, ACT: modified rcheck code to check the range given to malloc,
+ * rather than the range determined by the 2-power used.
+ *
+ * Jan 85, RMS: calls malloc_warning to issue warning on nearly full.
+ * No longer Emacs-specific; can serve as all-purpose malloc for GNU.
+ * You should call malloc_init to reinitialize after loading dumped Emacs.
+ * Call malloc_stats to get info on memory stats if MALLOC_STATS turned on.
+ * realloc knows how to return same block given, just changing its size,
+ * if the power of 2 is correct.
+ */
+
+/*
+ * nextf[i] is the pointer to the next free block of size 2^(i+3). The
+ * smallest allocatable block is 8 bytes. The overhead information will
+ * go in the first int of the block, and the returned pointer will point
+ * to the second.
+ */
+
+/* Define MEMSCRAMBLE to have free() write 0xcf into memory as it's freed, to
+ uncover callers that refer to freed memory, and to have malloc() write 0xdf
+ into memory as it's allocated to avoid referring to previous contents. */
+
+/* SCO 3.2v4 getcwd and possibly other libc routines fail with MEMSCRAMBLE;
+ handled by configure. */
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#if defined (SHELL)
+# include "bashtypes.h"
+# include "stdc.h"
+#else
+# include <sys/types.h>
+#endif
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+/* Determine which kind of system this is. */
+#include <signal.h>
+
+#if defined (HAVE_STRING_H)
+# include <string.h>
+#else
+# include <strings.h>
+#endif
+
+#include <stdio.h>
+
+/* Define getpagesize () if the system does not. */
+#ifndef HAVE_GETPAGESIZE
+# include "getpagesize.h"
+#endif
+
+#include "imalloc.h"
+#ifdef MALLOC_STATS
+# include "mstats.h"
+#endif
+#ifdef MALLOC_REGISTER
+# include "table.h"
+#endif
+#ifdef MALLOC_WATCH
+# include "watch.h"
+#endif
+
+/* System-specific omissions. */
+#ifdef HPUX
+# define NO_VALLOC
+#endif
+
+#define NBUCKETS 30
+
+#define ISALLOC ((char) 0xf7) /* magic byte that implies allocation */
+#define ISFREE ((char) 0x54) /* magic byte that implies free block */
+ /* this is for error checking only */
+#define ISMEMALIGN ((char) 0xd6) /* Stored before the value returned by
+ memalign, with the rest of the word
+ being the distance to the true
+ beginning of the block. */
+
+
+/* We have a flag indicating whether memory is allocated, an index in
+ nextf[], a size field, and a sentinel value to determine whether or
+ not a caller wrote before the start of allocated memory; to realloc()
+ memory we either copy mh_nbytes or just change mh_nbytes if there is
+ enough room in the block for the new size. Range checking is always
+ done. */
+union mhead {
+ bits64_t mh_align; /* 8 */
+ struct {
+ char mi_alloc; /* ISALLOC or ISFREE */ /* 1 */
+ char mi_index; /* index in nextf[] */ /* 1 */
+ /* Remainder are valid only when block is allocated */
+ u_bits16_t mi_magic2; /* should be == MAGIC2 */ /* 2 */
+ u_bits32_t mi_nbytes; /* # of bytes allocated */ /* 4 */
+ } minfo;
+};
+#define mh_alloc minfo.mi_alloc
+#define mh_index minfo.mi_index
+#define mh_nbytes minfo.mi_nbytes
+#define mh_magic2 minfo.mi_magic2
+
+#define MOVERHEAD sizeof(union mhead)
+#define MALIGN_MASK 7 /* one less than desired alignment */
+
+typedef union _malloc_guard {
+ char s[4];
+ u_bits32_t i;
+} mguard_t;
+
+/* Access free-list pointer of a block.
+ It is stored at block + sizeof (char *).
+ This is not a field in the minfo structure member of union mhead
+ because we want sizeof (union mhead)
+ to describe the overhead for when the block is in use,
+ and we do not want the free-list pointer to count in that. */
+
+#define CHAIN(a) \
+ (*(union mhead **) (sizeof (char *) + (char *) (a)))
+
+/* To implement range checking, we write magic values in at the beginning
+ and end of each allocated block, and make sure they are undisturbed
+ whenever a free or a realloc occurs. */
+
+/* Written in the 2 bytes before the block's real space (-4 bytes) */
+#define MAGIC2 0x5555
+#define MSLOP 4 /* 4 bytes extra for u_bits32_t size */
+
+/* How many bytes are actually allocated for a request of size N --
+ rounded up to nearest multiple of 8 after accounting for malloc
+ overhead. */
+#define ALLOCATED_BYTES(n) \
+ (((n) + MOVERHEAD + MSLOP + MALIGN_MASK) & ~MALIGN_MASK)
+
+#define ASSERT(p) \
+ do \
+ { \
+ if (!(p)) xbotch((PTR_T)0, ERR_ASSERT_FAILED, CPP_STRING(p), file, line); \
+ } \
+ while (0)
+
+/* Minimum and maximum bucket indices for block splitting (and to bound
+ the search for a block to split). */
+#define SPLIT_MIN 2 /* XXX - was 3 */
+#define SPLIT_MID 11
+#define SPLIT_MAX 14
+
+/* Minimum and maximum bucket indices for block coalescing. */
+#define COMBINE_MIN 2
+#define COMBINE_MAX (pagebucket - 1) /* XXX */
+
+#define LESSCORE_MIN 10
+#define LESSCORE_FRC 13
+
+#define STARTBUCK 1
+
+/* Flags for the internal functions. */
+#define MALLOC_WRAPPER 0x01 /* wrapper function */
+#define MALLOC_INTERNAL 0x02 /* internal function calling another */
+#define MALLOC_NOTRACE 0x04 /* don't trace this allocation or free */
+#define MALLOC_NOREG 0x08 /* don't register this allocation or free */
+
+/* Future use. */
+#define ERR_DUPFREE 0x01
+#define ERR_UNALLOC 0x02
+#define ERR_UNDERFLOW 0x04
+#define ERR_ASSERT_FAILED 0x08
+
+/* Evaluates to true if NB is appropriate for bucket NU. NB is adjusted
+ appropriately by the caller to account for malloc overhead. This only
+ checks that the recorded size is not too big for the bucket. We
+ can't check whether or not it's in between NU and NU-1 because we
+ might have encountered a busy bucket when allocating and moved up to
+ the next size. */
+#define IN_BUCKET(nb, nu) ((nb) <= binsizes[(nu)])
+
+/* Use this when we want to be sure that NB is in bucket NU. */
+#define RIGHT_BUCKET(nb, nu) \
+ (((nb) > binsizes[(nu)-1]) && ((nb) <= binsizes[(nu)]))
+
+/* nextf[i] is free list of blocks of size 2**(i + 3) */
+
+static union mhead *nextf[NBUCKETS];
+
+/* busy[i] is nonzero while allocation or free of block size i is in progress. */
+
+static char busy[NBUCKETS];
+
+static int pagesz; /* system page size. */
+static int pagebucket; /* bucket for requests a page in size */
+static int maxbuck; /* highest bucket receiving allocation request. */
+
+static char *memtop; /* top of heap */
+
+static const unsigned long binsizes[NBUCKETS] = {
+ 8UL, 16UL, 32UL, 64UL, 128UL, 256UL, 512UL, 1024UL, 2048UL, 4096UL,
+ 8192UL, 16384UL, 32768UL, 65536UL, 131072UL, 262144UL, 524288UL,
+ 1048576UL, 2097152UL, 4194304UL, 8388608UL, 16777216UL, 33554432UL,
+ 67108864UL, 134217728UL, 268435456UL, 536870912UL, 1073741824UL,
+ 2147483648UL, 4294967295UL
+};
+
+/* binsizes[x] == (1 << ((x) + 3)) */
+#define binsize(x) binsizes[(x)]
+
+/* Declarations for internal functions */
+static PTR_T internal_malloc __P((size_t, const char *, int, int));
+static PTR_T internal_realloc __P((PTR_T, size_t, const char *, int, int));
+static void internal_free __P((PTR_T, const char *, int, int));
+static PTR_T internal_memalign __P((size_t, size_t, const char *, int, int));
+#ifndef NO_CALLOC
+static PTR_T internal_calloc __P((size_t, size_t, const char *, int, int));
+static void internal_cfree __P((PTR_T, const char *, int, int));
+#endif
+#ifndef NO_VALLOC
+static PTR_T internal_valloc __P((size_t, const char *, int, int));
+#endif
+
+#if defined (botch)
+extern void botch ();
+#else
+static void botch __P((const char *, const char *, int));
+#endif
+static void xbotch __P((PTR_T, int, const char *, const char *, int));
+
+#if !HAVE_DECL_SBRK
+extern char *sbrk ();
+#endif /* !HAVE_DECL_SBRK */
+
+#ifdef SHELL
+extern int interrupt_immediately, running_trap;
+extern int signal_is_trapped __P((int));
+#endif
+
+#ifdef MALLOC_STATS
+struct _malstats _mstats;
+#endif /* MALLOC_STATS */
+
+/* Debugging variables available to applications. */
+int malloc_flags = 0; /* future use */
+int malloc_trace = 0; /* trace allocations and frees to stderr */
+int malloc_register = 0; /* future use */
+
+#ifdef MALLOC_TRACE
+char _malloc_trace_buckets[NBUCKETS];
+
+/* These should really go into a header file. */
+extern void mtrace_alloc __P((const char *, PTR_T, size_t, const char *, int));
+extern void mtrace_free __P((PTR_T, int, const char *, int));
+#endif
+
+#if !defined (botch)
+static void
+botch (s, file, line)
+ const char *s;
+ const char *file;
+ int line;
+{
+ fprintf (stderr, _("malloc: failed assertion: %s\n"), s);
+ (void)fflush (stderr);
+ abort ();
+}
+#endif
+
+/* print the file and line number that caused the assertion failure and
+ call botch() to do whatever the application wants with the information */
+static void
+xbotch (mem, e, s, file, line)
+ PTR_T mem;
+ int e;
+ const char *s;
+ const char *file;
+ int line;
+{
+ fprintf (stderr, _("\r\nmalloc: %s:%d: assertion botched\r\n"),
+ file ? file : _("unknown"), line);
+#ifdef MALLOC_REGISTER
+ if (mem != NULL && malloc_register)
+ mregister_describe_mem (mem, stderr);
+#endif
+ (void)fflush (stderr);
+ botch(s, file, line);
+}
+
+/* Coalesce two adjacent free blocks off the free list for size NU - 1,
+ as long as we can find two adjacent free blocks. nextf[NU -1] is
+ assumed to not be busy; the caller (morecore()) checks for this.
+ BUSY[NU] must be set to 1. */
+static void
+bcoalesce (nu)
+ register int nu;
+{
+ register union mhead *mp, *mp1, *mp2;
+ register int nbuck;
+ unsigned long siz;
+
+ nbuck = nu - 1;
+ if (nextf[nbuck] == 0 || busy[nbuck])
+ return;
+
+ busy[nbuck] = 1;
+ siz = binsize (nbuck);
+
+ mp2 = mp1 = nextf[nbuck];
+ mp = CHAIN (mp1);
+ while (mp && mp != (union mhead *)((char *)mp1 + siz))
+ {
+ mp2 = mp1;
+ mp1 = mp;
+ mp = CHAIN (mp);
+ }
+
+ if (mp == 0)
+ {
+ busy[nbuck] = 0;
+ return;
+ }
+
+ /* OK, now we have mp1 pointing to the block we want to add to nextf[NU].
+ CHAIN(mp2) must equal mp1. Check that mp1 and mp are adjacent. */
+ if (mp2 != mp1 && CHAIN(mp2) != mp1)
+ {
+ busy[nbuck] = 0;
+ xbotch ((PTR_T)0, 0, "bcoalesce: CHAIN(mp2) != mp1", (char *)NULL, 0);
+ }
+
+#ifdef MALLOC_DEBUG
+ if (CHAIN (mp1) != (union mhead *)((char *)mp1 + siz))
+ {
+ busy[nbuck] = 0;
+ return; /* not adjacent */
+ }
+#endif
+
+ /* Since they are adjacent, remove them from the free list */
+ if (mp1 == nextf[nbuck])
+ nextf[nbuck] = CHAIN (mp);
+ else
+ CHAIN (mp2) = CHAIN (mp);
+ busy[nbuck] = 0;
+
+#ifdef MALLOC_STATS
+ _mstats.tbcoalesce++;
+ _mstats.ncoalesce[nbuck]++;
+#endif
+
+ /* And add the combined two blocks to nextf[NU]. */
+ mp1->mh_alloc = ISFREE;
+ mp1->mh_index = nu;
+ CHAIN (mp1) = nextf[nu];
+ nextf[nu] = mp1;
+}
+
+/* Split a block at index > NU (but less than SPLIT_MAX) into a set of
+ blocks of the correct size, and attach them to nextf[NU]. nextf[NU]
+ is assumed to be empty. Must be called with signals blocked (e.g.,
+ by morecore()). BUSY[NU] must be set to 1. */
+static void
+bsplit (nu)
+ register int nu;
+{
+ register union mhead *mp;
+ int nbuck, nblks, split_max;
+ unsigned long siz;
+
+ split_max = (maxbuck > SPLIT_MAX) ? maxbuck : SPLIT_MAX;
+
+ if (nu >= SPLIT_MID)
+ {
+ for (nbuck = split_max; nbuck > nu; nbuck--)
+ {
+ if (busy[nbuck] || nextf[nbuck] == 0)
+ continue;
+ break;
+ }
+ }
+ else
+ {
+ for (nbuck = nu + 1; nbuck <= split_max; nbuck++)
+ {
+ if (busy[nbuck] || nextf[nbuck] == 0)
+ continue;
+ break;
+ }
+ }
+
+ if (nbuck > split_max || nbuck <= nu)
+ return;
+
+ /* XXX might want to split only if nextf[nbuck] has >= 2 blocks free
+ and nbuck is below some threshold. */
+
+ /* Remove the block from the chain of larger blocks. */
+ busy[nbuck] = 1;
+ mp = nextf[nbuck];
+ nextf[nbuck] = CHAIN (mp);
+ busy[nbuck] = 0;
+
+#ifdef MALLOC_STATS
+ _mstats.tbsplit++;
+ _mstats.nsplit[nbuck]++;
+#endif
+
+ /* Figure out how many blocks we'll get. */
+ siz = binsize (nu);
+ nblks = binsize (nbuck) / siz;
+
+ /* Split the block and put it on the requested chain. */
+ nextf[nu] = mp;
+ while (1)
+ {
+ mp->mh_alloc = ISFREE;
+ mp->mh_index = nu;
+ if (--nblks <= 0) break;
+ CHAIN (mp) = (union mhead *)((char *)mp + siz);
+ mp = (union mhead *)((char *)mp + siz);
+ }
+ CHAIN (mp) = 0;
+}
+
+/* Take the memory block MP and add it to a chain < NU. NU is the right bucket,
+ but is busy. This avoids memory orphaning. */
+static void
+xsplit (mp, nu)
+ union mhead *mp;
+ int nu;
+{
+ union mhead *nh;
+ int nbuck, nblks, split_max;
+ unsigned long siz;
+
+ nbuck = nu - 1;
+ while (nbuck >= SPLIT_MIN && busy[nbuck])
+ nbuck--;
+ if (nbuck < SPLIT_MIN)
+ return;
+
+#ifdef MALLOC_STATS
+ _mstats.tbsplit++;
+ _mstats.nsplit[nu]++;
+#endif
+
+ /* Figure out how many blocks we'll get. */
+ siz = binsize (nu); /* original block size */
+ nblks = siz / binsize (nbuck); /* should be 2 most of the time */
+
+ /* And add it to nextf[nbuck] */
+ siz = binsize (nbuck); /* XXX - resetting here */
+ nh = mp;
+ while (1)
+ {
+ mp->mh_alloc = ISFREE;
+ mp->mh_index = nbuck;
+ if (--nblks <= 0) break;
+ CHAIN (mp) = (union mhead *)((char *)mp + siz);
+ mp = (union mhead *)((char *)mp + siz);
+ }
+ busy[nbuck] = 1;
+ CHAIN (mp) = nextf[nbuck];
+ nextf[nbuck] = nh;
+ busy[nbuck] = 0;
+}
+
+void
+_malloc_block_signals (setp, osetp)
+ sigset_t *setp, *osetp;
+{
+#ifdef HAVE_POSIX_SIGNALS
+ sigfillset (setp);
+ sigemptyset (osetp);
+ sigprocmask (SIG_BLOCK, setp, osetp);
+#else
+# if defined (HAVE_BSD_SIGNALS)
+ *osetp = sigsetmask (-1);
+# endif
+#endif
+}
+
+void
+_malloc_unblock_signals (setp, osetp)
+ sigset_t *setp, *osetp;
+{
+#ifdef HAVE_POSIX_SIGNALS
+ sigprocmask (SIG_SETMASK, osetp, (sigset_t *)NULL);
+#else
+# if defined (HAVE_BSD_SIGNALS)
+ sigsetmask (*osetp);
+# endif
+#endif
+}
+
+/* Return some memory to the system by reducing the break. This is only
+ called with NU > pagebucket, so we're always assured of giving back
+ more than one page of memory. */
+static void
+lesscore (nu) /* give system back some memory */
+ register int nu; /* size index we're discarding */
+{
+ long siz;
+
+ siz = binsize (nu);
+ /* Should check for errors here, I guess. */
+ sbrk (-siz);
+ memtop -= siz;
+
+#ifdef MALLOC_STATS
+ _mstats.nsbrk++;
+ _mstats.tsbrk -= siz;
+ _mstats.nlesscore[nu]++;
+#endif
+}
+
+/* Ask system for more memory; add to NEXTF[NU]. BUSY[NU] must be set to 1. */
+static void
+morecore (nu)
+ register int nu; /* size index to get more of */
+{
+ register union mhead *mp;
+ register int nblks;
+ register long siz;
+ long sbrk_amt; /* amount to get via sbrk() */
+ sigset_t set, oset;
+ int blocked_sigs;
+
+ /* Block all signals in case we are executed from a signal handler. */
+ blocked_sigs = 0;
+#ifdef SHELL
+ if (interrupt_immediately || running_trap || signal_is_trapped (SIGINT) || signal_is_trapped (SIGCHLD))
+#endif
+ {
+ _malloc_block_signals (&set, &oset);
+ blocked_sigs = 1;
+ }
+
+ siz = binsize (nu); /* size of desired block for nextf[nu] */
+
+ if (siz < 0)
+ goto morecore_done; /* oops */
+
+#ifdef MALLOC_STATS
+ _mstats.nmorecore[nu]++;
+#endif
+
+ /* Try to split a larger block here, if we're within the range of sizes
+ to split. */
+ if (nu >= SPLIT_MIN)
+ {
+ bsplit (nu);
+ if (nextf[nu] != 0)
+ goto morecore_done;
+ }
+
+ /* Try to coalesce two adjacent blocks from the free list on nextf[nu - 1],
+ if we can, and we're within the range of the block coalescing limits. */
+ if (nu >= COMBINE_MIN && nu < COMBINE_MAX && busy[nu - 1] == 0 && nextf[nu - 1])
+ {
+ bcoalesce (nu);
+ if (nextf[nu] != 0)
+ goto morecore_done;
+ }
+
+ /* Take at least a page, and figure out how many blocks of the requested
+ size we're getting. */
+ if (siz <= pagesz)
+ {
+ sbrk_amt = pagesz;
+ nblks = sbrk_amt / siz;
+ }
+ else
+ {
+ /* We always want to request an integral multiple of the page size
+ from the kernel, so let's compute whether or not `siz' is such
+ an amount. If it is, we can just request it. If not, we want
+ the smallest integral multiple of pagesize that is larger than
+ `siz' and will satisfy the request. */
+ sbrk_amt = siz & (pagesz - 1);
+ if (sbrk_amt == 0)
+ sbrk_amt = siz;
+ else
+ sbrk_amt = siz + pagesz - sbrk_amt;
+ nblks = 1;
+ }
+
+#ifdef MALLOC_STATS
+ _mstats.nsbrk++;
+ _mstats.tsbrk += sbrk_amt;
+#endif
+
+ mp = (union mhead *) sbrk (sbrk_amt);
+
+ /* Totally out of memory. */
+ if ((long)mp == -1)
+ goto morecore_done;
+
+ memtop += sbrk_amt;
+
+ /* shouldn't happen, but just in case -- require 8-byte alignment */
+ if ((long)mp & MALIGN_MASK)
+ {
+ mp = (union mhead *) (((long)mp + MALIGN_MASK) & ~MALIGN_MASK);
+ nblks--;
+ }
+
+ /* save new header and link the nblks blocks together */
+ nextf[nu] = mp;
+ while (1)
+ {
+ mp->mh_alloc = ISFREE;
+ mp->mh_index = nu;
+ if (--nblks <= 0) break;
+ CHAIN (mp) = (union mhead *)((char *)mp + siz);
+ mp = (union mhead *)((char *)mp + siz);
+ }
+ CHAIN (mp) = 0;
+
+morecore_done:
+ if (blocked_sigs)
+ _malloc_unblock_signals (&set, &oset);
+}
+
+static void
+malloc_debug_dummy ()
+{
+ write (1, "malloc_debug_dummy\n", 19);
+}
+
+#define PREPOP_BIN 2
+#define PREPOP_SIZE 32
+
+static int
+pagealign ()
+{
+ register int nunits;
+ register union mhead *mp;
+ long sbrk_needed;
+ char *curbrk;
+
+ pagesz = getpagesize ();
+ if (pagesz < 1024)
+ pagesz = 1024;
+
+ /* OK, how much do we need to allocate to make things page-aligned?
+ Some of this partial page will be wasted space, but we'll use as
+ much as we can. Once we figure out how much to advance the break
+ pointer, go ahead and do it. */
+ memtop = curbrk = sbrk (0);
+ sbrk_needed = pagesz - ((long)curbrk & (pagesz - 1)); /* sbrk(0) % pagesz */
+ if (sbrk_needed < 0)
+ sbrk_needed += pagesz;
+
+ /* Now allocate the wasted space. */
+ if (sbrk_needed)
+ {
+#ifdef MALLOC_STATS
+ _mstats.nsbrk++;
+ _mstats.tsbrk += sbrk_needed;
+#endif
+ curbrk = sbrk (sbrk_needed);
+ if ((long)curbrk == -1)
+ return -1;
+ memtop += sbrk_needed;
+
+ /* Take the memory which would otherwise be wasted and populate the most
+ popular bin (2 == 32 bytes) with it. Add whatever we need to curbrk
+ to make things 32-byte aligned, compute how many 32-byte chunks we're
+ going to get, and set up the bin. */
+ curbrk += sbrk_needed & (PREPOP_SIZE - 1);
+ sbrk_needed -= sbrk_needed & (PREPOP_SIZE - 1);
+ nunits = sbrk_needed / PREPOP_SIZE;
+
+ if (nunits > 0)
+ {
+ mp = (union mhead *)curbrk;
+
+ nextf[PREPOP_BIN] = mp;
+ while (1)
+ {
+ mp->mh_alloc = ISFREE;
+ mp->mh_index = PREPOP_BIN;
+ if (--nunits <= 0) break;
+ CHAIN(mp) = (union mhead *)((char *)mp + PREPOP_SIZE);
+ mp = (union mhead *)((char *)mp + PREPOP_SIZE);
+ }
+ CHAIN(mp) = 0;
+ }
+ }
+
+ /* compute which bin corresponds to the page size. */
+ for (nunits = 7; nunits < NBUCKETS; nunits++)
+ if (pagesz <= binsize(nunits))
+ break;
+ pagebucket = nunits;
+
+ return 0;
+}
+
+static PTR_T
+internal_malloc (n, file, line, flags) /* get a block */
+ size_t n;
+ const char *file;
+ int line, flags;
+{
+ register union mhead *p;
+ register int nunits;
+ register char *m, *z;
+ long nbytes;
+ mguard_t mg;
+
+ /* Get the system page size and align break pointer so future sbrks will
+ be page-aligned. The page size must be at least 1K -- anything
+ smaller is increased. */
+ if (pagesz == 0)
+ if (pagealign () < 0)
+ return ((PTR_T)NULL);
+
+ /* Figure out how many bytes are required, rounding up to the nearest
+ multiple of 8, then figure out which nextf[] area to use. Try to
+ be smart about where to start searching -- if the number of bytes
+ needed is greater than the page size, we can start at pagebucket. */
+ nbytes = ALLOCATED_BYTES(n);
+ nunits = (nbytes <= (pagesz >> 1)) ? STARTBUCK : pagebucket;
+ for ( ; nunits < NBUCKETS; nunits++)
+ if (nbytes <= binsize(nunits))
+ break;
+
+ /* Silently reject too-large requests. */
+ if (nunits >= NBUCKETS)
+ return ((PTR_T) NULL);
+
+ /* In case this is reentrant use of malloc from signal handler,
+ pick a block size that no other malloc level is currently
+ trying to allocate. That's the easiest harmless way not to
+ interfere with the other level of execution. */
+#ifdef MALLOC_STATS
+ if (busy[nunits]) _mstats.nrecurse++;
+#endif
+ while (busy[nunits]) nunits++;
+ busy[nunits] = 1;
+
+ if (nunits > maxbuck)
+ maxbuck = nunits;
+
+ /* If there are no blocks of the appropriate size, go get some */
+ if (nextf[nunits] == 0)
+ morecore (nunits);
+
+ /* Get one block off the list, and set the new list head */
+ if ((p = nextf[nunits]) == NULL)
+ {
+ busy[nunits] = 0;
+ return NULL;
+ }
+ nextf[nunits] = CHAIN (p);
+ busy[nunits] = 0;
+
+ /* Check for free block clobbered */
+ /* If not for this check, we would gobble a clobbered free chain ptr
+ and bomb out on the NEXT allocate of this size block */
+ if (p->mh_alloc != ISFREE || p->mh_index != nunits)
+ xbotch ((PTR_T)(p+1), 0, _("malloc: block on free list clobbered"), file, line);
+
+ /* Fill in the info, and set up the magic numbers for range checking. */
+ p->mh_alloc = ISALLOC;
+ p->mh_magic2 = MAGIC2;
+ p->mh_nbytes = n;
+
+ /* End guard */
+ mg.i = n;
+ z = mg.s;
+ m = (char *) (p + 1) + n;
+ *m++ = *z++, *m++ = *z++, *m++ = *z++, *m++ = *z++;
+
+#ifdef MEMSCRAMBLE
+ if (n)
+ MALLOC_MEMSET ((char *)(p + 1), 0xdf, n); /* scramble previous contents */
+#endif
+#ifdef MALLOC_STATS
+ _mstats.nmalloc[nunits]++;
+ _mstats.tmalloc[nunits]++;
+ _mstats.nmal++;
+ _mstats.bytesreq += n;
+#endif /* MALLOC_STATS */
+
+#ifdef MALLOC_TRACE
+ if (malloc_trace && (flags & MALLOC_NOTRACE) == 0)
+ mtrace_alloc ("malloc", p + 1, n, file, line);
+ else if (_malloc_trace_buckets[nunits])
+ mtrace_alloc ("malloc", p + 1, n, file, line);
+#endif
+
+#ifdef MALLOC_REGISTER
+ if (malloc_register && (flags & MALLOC_NOREG) == 0)
+ mregister_alloc ("malloc", p + 1, n, file, line);
+#endif
+
+#ifdef MALLOC_WATCH
+ if (_malloc_nwatch > 0)
+ _malloc_ckwatch (p + 1, file, line, W_ALLOC, n);
+#endif
+
+ return (PTR_T) (p + 1);
+}
+
+static void
+internal_free (mem, file, line, flags)
+ PTR_T mem;
+ const char *file;
+ int line, flags;
+{
+ register union mhead *p;
+ register char *ap, *z;
+ register int nunits;
+ register unsigned int nbytes;
+ int ubytes; /* caller-requested size */
+ mguard_t mg;
+
+ if ((ap = (char *)mem) == 0)
+ return;
+
+ p = (union mhead *) ap - 1;
+
+ if (p->mh_alloc == ISMEMALIGN)
+ {
+ ap -= p->mh_nbytes;
+ p = (union mhead *) ap - 1;
+ }
+
+#if defined (MALLOC_TRACE) || defined (MALLOC_REGISTER)
+ if (malloc_trace || malloc_register)
+ ubytes = p->mh_nbytes;
+#endif
+
+ if (p->mh_alloc != ISALLOC)
+ {
+ if (p->mh_alloc == ISFREE)
+ xbotch (mem, ERR_DUPFREE,
+ _("free: called with already freed block argument"), file, line);
+ else
+ xbotch (mem, ERR_UNALLOC,
+ _("free: called with unallocated block argument"), file, line);
+ }
+
+ ASSERT (p->mh_magic2 == MAGIC2);
+
+ nunits = p->mh_index;
+ nbytes = ALLOCATED_BYTES(p->mh_nbytes);
+ /* Since the sizeof(u_bits32_t) bytes before the memory handed to the user
+ are now used for the number of bytes allocated, a simple check of
+ mh_magic2 is no longer sufficient to catch things like p[-1] = 'x'.
+ We sanity-check the value of mh_nbytes against the size of the blocks
+ in the appropriate bucket before we use it. This can still cause problems
+ and obscure errors if mh_nbytes is wrong but still within range; the
+ checks against the size recorded at the end of the chunk will probably
+ fail then. Using MALLOC_REGISTER will help here, since it saves the
+ original number of bytes requested. */
+
+ if (IN_BUCKET(nbytes, nunits) == 0)
+ xbotch (mem, ERR_UNDERFLOW,
+ _("free: underflow detected; mh_nbytes out of range"), file, line);
+
+ ap += p->mh_nbytes;
+ z = mg.s;
+ *z++ = *ap++, *z++ = *ap++, *z++ = *ap++, *z++ = *ap++;
+ if (mg.i != p->mh_nbytes)
+ xbotch (mem, ERR_ASSERT_FAILED, _("free: start and end chunk sizes differ"), file, line);
+
+#if GLIBC21
+ if (nunits >= LESSCORE_MIN && ((char *)p + binsize(nunits) == sbrk (0)))
+#else
+ if (nunits >= LESSCORE_MIN && ((char *)p + binsize(nunits) == memtop))
+#endif
+ {
+ /* If above LESSCORE_FRC, give back unconditionally. This should be set
+ high enough to be infrequently encountered. If between LESSCORE_MIN
+ and LESSCORE_FRC, call lesscore if the bucket is marked as busy or if
+ there's already a block on the free list. */
+ if ((nunits >= LESSCORE_FRC) || busy[nunits] || nextf[nunits] != 0)
+ {
+ lesscore (nunits);
+ /* keeps the tracing and registering code in one place */
+ goto free_return;
+ }
+ }
+
+#ifdef MEMSCRAMBLE
+ if (p->mh_nbytes)
+ MALLOC_MEMSET (mem, 0xcf, p->mh_nbytes);
+#endif
+
+ ASSERT (nunits < NBUCKETS);
+
+ if (busy[nunits] == 1)
+ {
+ xsplit (p, nunits); /* split block and add to different chain */
+ goto free_return;
+ }
+
+ p->mh_alloc = ISFREE;
+ /* Protect against signal handlers calling malloc. */
+ busy[nunits] = 1;
+ /* Put this block on the free list. */
+ CHAIN (p) = nextf[nunits];
+ nextf[nunits] = p;
+ busy[nunits] = 0;
+
+free_return:
+ ; /* Empty statement in case this is the end of the function */
+
+#ifdef MALLOC_STATS
+ _mstats.nmalloc[nunits]--;
+ _mstats.nfre++;
+#endif /* MALLOC_STATS */
+
+#ifdef MALLOC_TRACE
+ if (malloc_trace && (flags & MALLOC_NOTRACE) == 0)
+ mtrace_free (mem, ubytes, file, line);
+ else if (_malloc_trace_buckets[nunits])
+ mtrace_free (mem, ubytes, file, line);
+#endif
+
+#ifdef MALLOC_REGISTER
+ if (malloc_register && (flags & MALLOC_NOREG) == 0)
+ mregister_free (mem, ubytes, file, line);
+#endif
+
+#ifdef MALLOC_WATCH
+ if (_malloc_nwatch > 0)
+ _malloc_ckwatch (mem, file, line, W_FREE, ubytes);
+#endif
+}
+
+static PTR_T
+internal_realloc (mem, n, file, line, flags)
+ PTR_T mem;
+ register size_t n;
+ const char *file;
+ int line, flags;
+{
+ register union mhead *p;
+ register u_bits32_t tocopy;
+ register unsigned int nbytes;
+ register int nunits;
+ register char *m, *z;
+ mguard_t mg;
+
+#ifdef MALLOC_STATS
+ _mstats.nrealloc++;
+#endif
+
+ if (n == 0)
+ {
+ internal_free (mem, file, line, MALLOC_INTERNAL);
+ return (NULL);
+ }
+ if ((p = (union mhead *) mem) == 0)
+ return internal_malloc (n, file, line, MALLOC_INTERNAL);
+
+ p--;
+ nunits = p->mh_index;
+ ASSERT (nunits < NBUCKETS);
+
+ if (p->mh_alloc != ISALLOC)
+ xbotch (mem, ERR_UNALLOC,
+ _("realloc: called with unallocated block argument"), file, line);
+
+ ASSERT (p->mh_magic2 == MAGIC2);
+ nbytes = ALLOCATED_BYTES(p->mh_nbytes);
+ /* Since the sizeof(u_bits32_t) bytes before the memory handed to the user
+ are now used for the number of bytes allocated, a simple check of
+ mh_magic2 is no longer sufficient to catch things like p[-1] = 'x'.
+ We sanity-check the value of mh_nbytes against the size of the blocks
+ in the appropriate bucket before we use it. This can still cause problems
+ and obscure errors if mh_nbytes is wrong but still within range; the
+ checks against the size recorded at the end of the chunk will probably
+ fail then. Using MALLOC_REGISTER will help here, since it saves the
+ original number of bytes requested. */
+ if (IN_BUCKET(nbytes, nunits) == 0)
+ xbotch (mem, ERR_UNDERFLOW,
+ _("realloc: underflow detected; mh_nbytes out of range"), file, line);
+
+ m = (char *)mem + (tocopy = p->mh_nbytes);
+ z = mg.s;
+ *z++ = *m++, *z++ = *m++, *z++ = *m++, *z++ = *m++;
+ if (mg.i != p->mh_nbytes)
+ xbotch (mem, ERR_ASSERT_FAILED, _("realloc: start and end chunk sizes differ"), file, line);
+
+#ifdef MALLOC_WATCH
+ if (_malloc_nwatch > 0)
+ _malloc_ckwatch (p + 1, file, line, W_REALLOC, n);
+#endif
+#ifdef MALLOC_STATS
+ _mstats.bytesreq += (n < tocopy) ? 0 : n - tocopy;
+#endif
+
+ /* See if desired size rounds to same power of 2 as actual size. */
+ nbytes = ALLOCATED_BYTES(n);
+
+ /* If ok, use the same block, just marking its size as changed. */
+ if (RIGHT_BUCKET(nbytes, nunits))
+ {
+#if 0
+ m = (char *)mem + p->mh_nbytes;
+#else
+ /* Compensate for increment above. */
+ m -= 4;
+#endif
+ *m++ = 0; *m++ = 0; *m++ = 0; *m++ = 0;
+ m = (char *)mem + (p->mh_nbytes = n);
+
+ mg.i = n;
+ z = mg.s;
+ *m++ = *z++, *m++ = *z++, *m++ = *z++, *m++ = *z++;
+
+ return mem;
+ }
+
+ if (n < tocopy)
+ tocopy = n;
+
+#ifdef MALLOC_STATS
+ _mstats.nrcopy++;
+#endif
+
+ if ((m = internal_malloc (n, file, line, MALLOC_INTERNAL|MALLOC_NOTRACE|MALLOC_NOREG)) == 0)
+ return 0;
+ FASTCOPY (mem, m, tocopy);
+ internal_free (mem, file, line, MALLOC_INTERNAL);
+
+#ifdef MALLOC_TRACE
+ if (malloc_trace && (flags & MALLOC_NOTRACE) == 0)
+ mtrace_alloc ("realloc", m, n, file, line);
+ else if (_malloc_trace_buckets[nunits])
+ mtrace_alloc ("realloc", m, n, file, line);
+#endif
+
+#ifdef MALLOC_REGISTER
+ if (malloc_register && (flags & MALLOC_NOREG) == 0)
+ mregister_alloc ("realloc", m, n, file, line);
+#endif
+
+#ifdef MALLOC_WATCH
+ if (_malloc_nwatch > 0)
+ _malloc_ckwatch (m, file, line, W_RESIZED, n);
+#endif
+
+ return m;
+}
+
+static PTR_T
+internal_memalign (alignment, size, file, line, flags)
+ size_t alignment;
+ size_t size;
+ const char *file;
+ int line, flags;
+{
+ register char *ptr;
+ register char *aligned;
+ register union mhead *p;
+
+ ptr = internal_malloc (size + alignment, file, line, MALLOC_INTERNAL);
+
+ if (ptr == 0)
+ return 0;
+ /* If entire block has the desired alignment, just accept it. */
+ if (((long) ptr & (alignment - 1)) == 0)
+ return ptr;
+ /* Otherwise, get address of byte in the block that has that alignment. */
+#if 0
+ aligned = (char *) (((long) ptr + alignment - 1) & -alignment);
+#else
+ aligned = (char *) (((long) ptr + alignment - 1) & (~alignment + 1));
+#endif
+
+ /* Store a suitable indication of how to free the block,
+ so that free can find the true beginning of it. */
+ p = (union mhead *) aligned - 1;
+ p->mh_nbytes = aligned - ptr;
+ p->mh_alloc = ISMEMALIGN;
+
+ return aligned;
+}
+
+#if !defined (NO_VALLOC)
+/* This runs into trouble with getpagesize on HPUX, and Multimax machines.
+ Patching out seems cleaner than the ugly fix needed. */
+static PTR_T
+internal_valloc (size, file, line, flags)
+ size_t size;
+ const char *file;
+ int line, flags;
+{
+ return internal_memalign (getpagesize (), size, file, line, flags|MALLOC_INTERNAL);
+}
+#endif /* !NO_VALLOC */
+
+#ifndef NO_CALLOC
+static PTR_T
+internal_calloc (n, s, file, line, flags)
+ size_t n, s;
+ const char *file;
+ int line, flags;
+{
+ size_t total;
+ PTR_T result;
+
+ total = n * s;
+ result = internal_malloc (total, file, line, flags|MALLOC_INTERNAL);
+ if (result)
+ memset (result, 0, total);
+ return result;
+}
+
+static void
+internal_cfree (p, file, line, flags)
+ PTR_T p;
+ const char *file;
+ int line, flags;
+{
+ internal_free (p, file, line, flags|MALLOC_INTERNAL);
+}
+#endif /* !NO_CALLOC */
+
+#ifdef MALLOC_STATS
+int
+malloc_free_blocks (size)
+ int size;
+{
+ int nfree;
+ register union mhead *p;
+
+ nfree = 0;
+ for (p = nextf[size]; p; p = CHAIN (p))
+ nfree++;
+
+ return nfree;
+}
+#endif
+
+#if defined (MALLOC_WRAPFUNCS)
+PTR_T
+sh_malloc (bytes, file, line)
+ size_t bytes;
+ const char *file;
+ int line;
+{
+ return internal_malloc (bytes, file, line, MALLOC_WRAPPER);
+}
+
+PTR_T
+sh_realloc (ptr, size, file, line)
+ PTR_T ptr;
+ size_t size;
+ const char *file;
+ int line;
+{
+ return internal_realloc (ptr, size, file, line, MALLOC_WRAPPER);
+}
+
+void
+sh_free (mem, file, line)
+ PTR_T mem;
+ const char *file;
+ int line;
+{
+ internal_free (mem, file, line, MALLOC_WRAPPER);
+}
+
+PTR_T
+sh_memalign (alignment, size, file, line)
+ size_t alignment;
+ size_t size;
+ const char *file;
+ int line;
+{
+ return internal_memalign (alignment, size, file, line, MALLOC_WRAPPER);
+}
+
+#ifndef NO_CALLOC
+PTR_T
+sh_calloc (n, s, file, line)
+ size_t n, s;
+ const char *file;
+ int line;
+{
+ return internal_calloc (n, s, file, line, MALLOC_WRAPPER);
+}
+
+void
+sh_cfree (mem, file, line)
+ PTR_T mem;
+ const char *file;
+ int line;
+{
+ internal_cfree (mem, file, line, MALLOC_WRAPPER);
+}
+#endif
+
+#ifndef NO_VALLOC
+PTR_T
+sh_valloc (size, file, line)
+ size_t size;
+ const char *file;
+ int line;
+{
+ return internal_valloc (size, file, line, MALLOC_WRAPPER);
+}
+#endif /* !NO_VALLOC */
+
+#endif /* MALLOC_WRAPFUNCS */
+
+/* Externally-available functions that call their internal counterparts. */
+
+PTR_T
+malloc (size)
+ size_t size;
+{
+ return internal_malloc (size, (char *)NULL, 0, 0);
+}
+
+PTR_T
+realloc (mem, nbytes)
+ PTR_T mem;
+ size_t nbytes;
+{
+ return internal_realloc (mem, nbytes, (char *)NULL, 0, 0);
+}
+
+void
+free (mem)
+ PTR_T mem;
+{
+ internal_free (mem, (char *)NULL, 0, 0);
+}
+
+PTR_T
+memalign (alignment, size)
+ size_t alignment;
+ size_t size;
+{
+ return internal_memalign (alignment, size, (char *)NULL, 0, 0);
+}
+
+#ifndef NO_VALLOC
+PTR_T
+valloc (size)
+ size_t size;
+{
+ return internal_valloc (size, (char *)NULL, 0, 0);
+}
+#endif
+
+#ifndef NO_CALLOC
+PTR_T
+calloc (n, s)
+ size_t n, s;
+{
+ return internal_calloc (n, s, (char *)NULL, 0, 0);
+}
+
+void
+cfree (mem)
+ PTR_T mem;
+{
+ internal_cfree (mem, (char *)NULL, 0, 0);
+}
+#endif
--- /dev/null
+ 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/>.
--- /dev/null
+ 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/>.
{
open_some_spaces (col_lendiff);
_rl_output_some_chars (nfd, bytes_to_insert);
- _rl_last_c_pos += _rl_col_width (nfd, 0, bytes_to_insert, 1);
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ _rl_last_c_pos += _rl_col_width (nfd, 0, bytes_to_insert, 1);
+ else
+ _rl_last_c_pos += bytes_to_insert;
}
else if ((MB_CUR_MAX == 1 || rl_byte_oriented != 0) && *ols == 0 && lendiff > 0)
{
/* At the end of a line the characters do not have to
be "inserted". They can just be placed on the screen. */
- /* However, this screws up the rest of this block, which
- assumes you've done the insert because you can. */
- _rl_output_some_chars (nfd, lendiff);
- _rl_last_c_pos += col_lendiff;
+ _rl_output_some_chars (nfd, temp);
+ _rl_last_c_pos += col_temp;
+ return;
}
else /* just write from first difference to end of new line */
{
if (end <= start)
return 0;
if (MB_CUR_MAX == 1 || rl_byte_oriented)
-{
-_rl_ttymsg ("_rl_col_width: called with MB_CUR_MAX == 1");
+ /* this can happen in some cases where it's inconvenient to check */
return (end - start);
-}
memset (&ps, 0, sizeof (mbstate_t));
--- /dev/null
+/* display.c -- readline redisplay facility. */
+
+/* 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>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#include "posixstat.h"
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include <stdio.h>
+
+#ifdef __MSDOS__
+# include <pc.h>
+#endif
+
+/* System-specific feature definitions and include files. */
+#include "rldefs.h"
+#include "rlmbutil.h"
+
+/* Termcap library stuff. */
+#include "tcap.h"
+
+/* Some standard library routines. */
+#include "readline.h"
+#include "history.h"
+
+#include "rlprivate.h"
+#include "xmalloc.h"
+
+#if !defined (strchr) && !defined (__STDC__)
+extern char *strchr (), *strrchr ();
+#endif /* !strchr && !__STDC__ */
+
+static void update_line PARAMS((char *, char *, int, int, int, int));
+static void space_to_eol PARAMS((int));
+static void delete_chars PARAMS((int));
+static void insert_some_chars PARAMS((char *, int, int));
+static void open_some_spaces PARAMS((int));
+static void cr PARAMS((void));
+
+/* State of visible and invisible lines. */
+struct line_state
+ {
+ char *line;
+ int *lbreaks;
+ int lbsize;
+#if defined (HANDLE_MULTIBYTE)
+ int *wrapped_line;
+ int wbsize;
+#endif
+ };
+
+/* The line display buffers. One is the line currently displayed on
+ the screen. The other is the line about to be displayed. */
+static struct line_state line_state_array[2];
+static struct line_state *line_state_visible = &line_state_array[0];
+static struct line_state *line_state_invisible = &line_state_array[1];
+static int line_structures_initialized = 0;
+
+/* Backwards-compatible names. */
+#define inv_lbreaks (line_state_invisible->lbreaks)
+#define inv_lbsize (line_state_invisible->lbsize)
+#define vis_lbreaks (line_state_visible->lbreaks)
+#define vis_lbsize (line_state_visible->lbsize)
+
+#define visible_line (line_state_visible->line)
+#define invisible_line (line_state_invisible->line)
+
+#if defined (HANDLE_MULTIBYTE)
+static int _rl_col_width PARAMS((const char *, int, int, int));
+#else
+# define _rl_col_width(l, s, e, f) (((e) <= (s)) ? 0 : (e) - (s))
+#endif
+
+/* Heuristic used to decide whether it is faster to move from CUR to NEW
+ by backing up or outputting a carriage return and moving forward. CUR
+ and NEW are either both buffer positions or absolute screen positions. */
+#define CR_FASTER(new, cur) (((new) + 1) < ((cur) - (new)))
+
+/* _rl_last_c_pos is an absolute cursor position in multibyte locales and a
+ buffer index in others. This macro is used when deciding whether the
+ current cursor position is in the middle of a prompt string containing
+ invisible characters. XXX - might need to take `modmark' into account. */
+#define PROMPT_ENDING_INDEX \
+ ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) ? prompt_physical_chars : prompt_last_invisible+1)
+
+
+/* **************************************************************** */
+/* */
+/* Display stuff */
+/* */
+/* **************************************************************** */
+
+/* This is the stuff that is hard for me. I never seem to write good
+ display routines in C. Let's see how I do this time. */
+
+/* (PWP) Well... Good for a simple line updater, but totally ignores
+ the problems of input lines longer than the screen width.
+
+ update_line and the code that calls it makes a multiple line,
+ automatically wrapping line update. Careful attention needs
+ to be paid to the vertical position variables. */
+
+/* Keep two buffers; one which reflects the current contents of the
+ screen, and the other to draw what we think the new contents should
+ be. Then compare the buffers, and make whatever changes to the
+ screen itself that we should. Finally, make the buffer that we
+ just drew into be the one which reflects the current contents of the
+ screen, and place the cursor where it belongs.
+
+ Commands that want to can fix the display themselves, and then let
+ this function know that the display has been fixed by setting the
+ RL_DISPLAY_FIXED variable. This is good for efficiency. */
+
+/* Application-specific redisplay function. */
+rl_voidfunc_t *rl_redisplay_function = rl_redisplay;
+
+/* Global variables declared here. */
+/* What YOU turn on when you have handled all redisplay yourself. */
+int rl_display_fixed = 0;
+
+int _rl_suppress_redisplay = 0;
+int _rl_want_redisplay = 0;
+
+/* The stuff that gets printed out before the actual text of the line.
+ This is usually pointing to rl_prompt. */
+char *rl_display_prompt = (char *)NULL;
+
+/* Pseudo-global variables declared here. */
+
+/* The visible cursor position. If you print some text, adjust this. */
+/* NOTE: _rl_last_c_pos is used as a buffer index when not in a locale
+ supporting multibyte characters, and an absolute cursor position when
+ in such a locale. This is an artifact of the donated multibyte support.
+ Care must be taken when modifying its value. */
+int _rl_last_c_pos = 0;
+int _rl_last_v_pos = 0;
+
+static int cpos_adjusted;
+static int cpos_buffer_position;
+static int displaying_prompt_first_line;
+static int prompt_multibyte_chars;
+
+/* Number of lines currently on screen minus 1. */
+int _rl_vis_botlin = 0;
+
+/* Variables used only in this file. */
+/* The last left edge of text that was displayed. This is used when
+ doing horizontal scrolling. It shifts in thirds of a screenwidth. */
+static int last_lmargin;
+
+/* A buffer for `modeline' messages. */
+static char *msg_buf = 0;
+static int msg_bufsiz = 0;
+
+/* Non-zero forces the redisplay even if we thought it was unnecessary. */
+static int forced_display;
+
+/* Default and initial buffer size. Can grow. */
+static int line_size = 1024;
+
+/* Variables to keep track of the expanded prompt string, which may
+ include invisible characters. */
+
+static char *local_prompt, *local_prompt_prefix;
+static int local_prompt_len;
+static int prompt_visible_length, prompt_prefix_length;
+
+/* The number of invisible characters in the line currently being
+ displayed on the screen. */
+static int visible_wrap_offset;
+
+/* The number of invisible characters in the prompt string. Static so it
+ can be shared between rl_redisplay and update_line */
+static int wrap_offset;
+
+/* The index of the last invisible character in the prompt string. */
+static int prompt_last_invisible;
+
+/* The length (buffer offset) of the first line of the last (possibly
+ multi-line) buffer displayed on the screen. */
+static int visible_first_line_len;
+
+/* Number of invisible characters on the first physical line of the prompt.
+ Only valid when the number of physical characters in the prompt exceeds
+ (or is equal to) _rl_screenwidth. */
+static int prompt_invis_chars_first_line;
+
+static int prompt_last_screen_line;
+
+static int prompt_physical_chars;
+
+/* set to a non-zero value by rl_redisplay if we are marking modified history
+ lines and the current line is so marked. */
+static int modmark;
+
+/* Variables to save and restore prompt and display information. */
+
+/* These are getting numerous enough that it's time to create a struct. */
+
+static char *saved_local_prompt;
+static char *saved_local_prefix;
+static int saved_last_invisible;
+static int saved_visible_length;
+static int saved_prefix_length;
+static int saved_local_length;
+static int saved_invis_chars_first_line;
+static int saved_physical_chars;
+
+/* Return a character indicating the editing mode, for use in the prompt. */
+static int
+prompt_modechar ()
+{
+ if (rl_editing_mode == emacs_mode)
+ return '@';
+ else if (_rl_keymap == vi_insertion_keymap)
+ return '+'; /* vi insert mode */
+ else
+ return ':'; /* vi command mode */
+}
+
+/* Expand the prompt string S and return the number of visible
+ characters in *LP, if LP is not null. This is currently more-or-less
+ a placeholder for expansion. LIP, if non-null is a place to store the
+ index of the last invisible character in the returned string. NIFLP,
+ if non-zero, is a place to store the number of invisible characters in
+ the first prompt line. The previous are used as byte counts -- indexes
+ into a character buffer. */
+
+/* Current implementation:
+ \001 (^A) start non-visible characters
+ \002 (^B) end non-visible characters
+ all characters except \001 and \002 (following a \001) are copied to
+ the returned string; all characters except those between \001 and
+ \002 are assumed to be `visible'. */
+
+static char *
+expand_prompt (pmt, lp, lip, niflp, vlp)
+ char *pmt;
+ int *lp, *lip, *niflp, *vlp;
+{
+ char *r, *ret, *p, *igstart;
+ int l, rl, last, ignoring, ninvis, invfl, invflset, ind, pind, physchars;
+
+ /* Short-circuit if we can. */
+ if ((MB_CUR_MAX <= 1 || rl_byte_oriented) && strchr (pmt, RL_PROMPT_START_IGNORE) == 0)
+ {
+ if (pmt == rl_prompt && _rl_show_mode_in_prompt)
+ {
+ l = strlen (pmt);
+ r = (char *)xmalloc (l + 2);
+ r[0] = prompt_modechar ();
+ strcpy (r + 1, pmt);
+ }
+ else
+ r = savestring (pmt);
+
+ if (lp)
+ *lp = strlen (r);
+ if (lip)
+ *lip = 0;
+ if (niflp)
+ *niflp = 0;
+ if (vlp)
+ *vlp = lp ? *lp : strlen (r);
+ return r;
+ }
+
+ l = strlen (pmt);
+ r = ret = (char *)xmalloc (l + 2);
+
+ rl = physchars = 0; /* move up here so mode show can set them */
+ if (pmt == rl_prompt && _rl_show_mode_in_prompt)
+ {
+ *r++ = prompt_modechar ();
+ rl = physchars = 1;
+ }
+
+ invfl = 0; /* invisible chars in first line of prompt */
+ invflset = 0; /* we only want to set invfl once */
+
+ igstart = 0;
+ for (ignoring = last = ninvis = 0, p = pmt; p && *p; p++)
+ {
+ /* This code strips the invisible character string markers
+ RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE */
+ if (ignoring == 0 && *p == RL_PROMPT_START_IGNORE) /* XXX - check ignoring? */
+ {
+ ignoring = 1;
+ igstart = p;
+ continue;
+ }
+ else if (ignoring && *p == RL_PROMPT_END_IGNORE)
+ {
+ ignoring = 0;
+ if (p != (igstart + 1))
+ last = r - ret - 1;
+ continue;
+ }
+ else
+ {
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ pind = p - pmt;
+ ind = _rl_find_next_mbchar (pmt, pind, 1, MB_FIND_NONZERO);
+ l = ind - pind;
+ while (l--)
+ *r++ = *p++;
+ if (!ignoring)
+ {
+ /* rl ends up being assigned to prompt_visible_length,
+ which is the number of characters in the buffer that
+ contribute to characters on the screen, which might
+ not be the same as the number of physical characters
+ on the screen in the presence of multibyte characters */
+ rl += ind - pind;
+ physchars += _rl_col_width (pmt, pind, ind, 0);
+ }
+ else
+ ninvis += ind - pind;
+ p--; /* compensate for later increment */
+ }
+ else
+#endif
+ {
+ *r++ = *p;
+ if (!ignoring)
+ {
+ rl++; /* visible length byte counter */
+ physchars++;
+ }
+ else
+ ninvis++; /* invisible chars byte counter */
+ }
+
+ if (invflset == 0 && rl >= _rl_screenwidth)
+ {
+ invfl = ninvis;
+ invflset = 1;
+ }
+ }
+ }
+
+ if (rl < _rl_screenwidth)
+ invfl = ninvis;
+
+ *r = '\0';
+ if (lp)
+ *lp = rl;
+ if (lip)
+ *lip = last;
+ if (niflp)
+ *niflp = invfl;
+ if (vlp)
+ *vlp = physchars;
+ return ret;
+}
+
+/* Just strip out RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE from
+ PMT and return the rest of PMT. */
+char *
+_rl_strip_prompt (pmt)
+ char *pmt;
+{
+ char *ret;
+
+ ret = expand_prompt (pmt, (int *)NULL, (int *)NULL, (int *)NULL, (int *)NULL);
+ return ret;
+}
+
+void
+_rl_reset_prompt ()
+{
+ rl_visible_prompt_length = rl_expand_prompt (rl_prompt);
+}
+
+/*
+ * Expand the prompt string into the various display components, if
+ * necessary.
+ *
+ * local_prompt = expanded last line of string in rl_display_prompt
+ * (portion after the final newline)
+ * local_prompt_prefix = portion before last newline of rl_display_prompt,
+ * expanded via expand_prompt
+ * prompt_visible_length = number of visible characters in local_prompt
+ * prompt_prefix_length = number of visible characters in local_prompt_prefix
+ *
+ * This function is called once per call to readline(). It may also be
+ * called arbitrarily to expand the primary prompt.
+ *
+ * The return value is the number of visible characters on the last line
+ * of the (possibly multi-line) prompt.
+ */
+int
+rl_expand_prompt (prompt)
+ char *prompt;
+{
+ char *p, *t;
+ int c;
+
+ /* Clear out any saved values. */
+ FREE (local_prompt);
+ FREE (local_prompt_prefix);
+
+ local_prompt = local_prompt_prefix = (char *)0;
+ local_prompt_len = 0;
+ prompt_last_invisible = prompt_invis_chars_first_line = 0;
+ prompt_visible_length = prompt_physical_chars = 0;
+
+ if (prompt == 0 || *prompt == 0)
+ return (0);
+
+ p = strrchr (prompt, '\n');
+ if (!p)
+ {
+ /* The prompt is only one logical line, though it might wrap. */
+ local_prompt = expand_prompt (prompt, &prompt_visible_length,
+ &prompt_last_invisible,
+ &prompt_invis_chars_first_line,
+ &prompt_physical_chars);
+ local_prompt_prefix = (char *)0;
+ local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
+ return (prompt_visible_length);
+ }
+ else
+ {
+ /* The prompt spans multiple lines. */
+ t = ++p;
+ local_prompt = expand_prompt (p, &prompt_visible_length,
+ &prompt_last_invisible,
+ &prompt_invis_chars_first_line,
+ &prompt_physical_chars);
+ c = *t; *t = '\0';
+ /* The portion of the prompt string up to and including the
+ final newline is now null-terminated. */
+ local_prompt_prefix = expand_prompt (prompt, &prompt_prefix_length,
+ (int *)NULL,
+ (int *)NULL,
+ (int *)NULL);
+ *t = c;
+ local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
+ return (prompt_prefix_length);
+ }
+}
+
+/* Initialize the VISIBLE_LINE and INVISIBLE_LINE arrays, and their associated
+ arrays of line break markers. MINSIZE is the minimum size of VISIBLE_LINE
+ and INVISIBLE_LINE; if it is greater than LINE_SIZE, LINE_SIZE is
+ increased. If the lines have already been allocated, this ensures that
+ they can hold at least MINSIZE characters. */
+static void
+init_line_structures (minsize)
+ int minsize;
+{
+ register int n;
+
+ if (invisible_line == 0) /* initialize it */
+ {
+ if (line_size < minsize)
+ line_size = minsize;
+ visible_line = (char *)xmalloc (line_size);
+ invisible_line = (char *)xmalloc (line_size);
+ }
+ else if (line_size < minsize) /* ensure it can hold MINSIZE chars */
+ {
+ line_size *= 2;
+ if (line_size < minsize)
+ line_size = minsize;
+ visible_line = (char *)xrealloc (visible_line, line_size);
+ invisible_line = (char *)xrealloc (invisible_line, line_size);
+ }
+
+ for (n = minsize; n < line_size; n++)
+ {
+ visible_line[n] = 0;
+ invisible_line[n] = 1;
+ }
+
+ if (vis_lbreaks == 0)
+ {
+ /* should be enough. */
+ inv_lbsize = vis_lbsize = 256;
+
+#if defined (HANDLE_MULTIBYTE)
+ line_state_visible->wbsize = vis_lbsize;
+ line_state_visible->wrapped_line = (int *)xmalloc (line_state_visible->wbsize * sizeof (int));
+
+ line_state_invisible->wbsize = inv_lbsize;
+ line_state_invisible->wrapped_line = (int *)xmalloc (line_state_invisible->wbsize * sizeof (int));
+#endif
+
+ inv_lbreaks = (int *)xmalloc (inv_lbsize * sizeof (int));
+ vis_lbreaks = (int *)xmalloc (vis_lbsize * sizeof (int));
+ inv_lbreaks[0] = vis_lbreaks[0] = 0;
+ }
+
+ line_structures_initialized = 1;
+}
+
+/* Basic redisplay algorithm. */
+void
+rl_redisplay ()
+{
+ register int in, out, c, linenum, cursor_linenum;
+ register char *line;
+ int inv_botlin, lb_botlin, lb_linenum, o_cpos;
+ int newlines, lpos, temp, n0, num, prompt_lines_estimate;
+ char *prompt_this_line;
+#if defined (HANDLE_MULTIBYTE)
+ wchar_t wc;
+ size_t wc_bytes;
+ int wc_width;
+ mbstate_t ps;
+ int _rl_wrapped_multicolumn = 0;
+#endif
+
+ if (_rl_echoing_p == 0)
+ return;
+
+ /* Block keyboard interrupts because this function manipulates global
+ data structures. */
+ _rl_block_sigint ();
+ RL_SETSTATE (RL_STATE_REDISPLAYING);
+
+ if (!rl_display_prompt)
+ rl_display_prompt = "";
+
+ if (line_structures_initialized == 0)
+ {
+ init_line_structures (0);
+ rl_on_new_line ();
+ }
+
+ /* Draw the line into the buffer. */
+ cpos_buffer_position = -1;
+
+ prompt_multibyte_chars = prompt_visible_length - prompt_physical_chars;
+
+ line = invisible_line;
+ out = inv_botlin = 0;
+
+ /* Mark the line as modified or not. We only do this for history
+ lines. */
+ modmark = 0;
+ if (_rl_mark_modified_lines && current_history () && rl_undo_list)
+ {
+ line[out++] = '*';
+ line[out] = '\0';
+ modmark = 1;
+ }
+
+ /* If someone thought that the redisplay was handled, but the currently
+ visible line has a different modification state than the one about
+ to become visible, then correct the caller's misconception. */
+ if (visible_line[0] != invisible_line[0])
+ rl_display_fixed = 0;
+
+ /* If the prompt to be displayed is the `primary' readline prompt (the
+ one passed to readline()), use the values we have already expanded.
+ If not, use what's already in rl_display_prompt. WRAP_OFFSET is the
+ number of non-visible characters in the prompt string. */
+ if (rl_display_prompt == rl_prompt || local_prompt)
+ {
+ if (local_prompt_prefix && forced_display)
+ _rl_output_some_chars (local_prompt_prefix, strlen (local_prompt_prefix));
+
+ if (local_prompt_len > 0)
+ {
+ temp = local_prompt_len + out + 2;
+ if (temp >= line_size)
+ {
+ line_size = (temp + 1024) - (temp % 1024);
+ visible_line = (char *)xrealloc (visible_line, line_size);
+ line = invisible_line = (char *)xrealloc (invisible_line, line_size);
+ }
+ strncpy (line + out, local_prompt, local_prompt_len);
+ out += local_prompt_len;
+ }
+ line[out] = '\0';
+ wrap_offset = local_prompt_len - prompt_visible_length;
+ }
+ else
+ {
+ int pmtlen;
+ prompt_this_line = strrchr (rl_display_prompt, '\n');
+ if (!prompt_this_line)
+ prompt_this_line = rl_display_prompt;
+ else
+ {
+ prompt_this_line++;
+ pmtlen = prompt_this_line - rl_display_prompt; /* temp var */
+ if (forced_display)
+ {
+ _rl_output_some_chars (rl_display_prompt, pmtlen);
+ /* Make sure we are at column zero even after a newline,
+ regardless of the state of terminal output processing. */
+ if (pmtlen < 2 || prompt_this_line[-2] != '\r')
+ cr ();
+ }
+ }
+
+ prompt_physical_chars = pmtlen = strlen (prompt_this_line);
+ temp = pmtlen + out + 2;
+ if (temp >= line_size)
+ {
+ line_size = (temp + 1024) - (temp % 1024);
+ visible_line = (char *)xrealloc (visible_line, line_size);
+ line = invisible_line = (char *)xrealloc (invisible_line, line_size);
+ }
+ strncpy (line + out, prompt_this_line, pmtlen);
+ out += pmtlen;
+ line[out] = '\0';
+ wrap_offset = prompt_invis_chars_first_line = 0;
+ }
+
+#define CHECK_INV_LBREAKS() \
+ do { \
+ if (newlines >= (inv_lbsize - 2)) \
+ { \
+ inv_lbsize *= 2; \
+ inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
+ } \
+ } while (0)
+
+#if defined (HANDLE_MULTIBYTE)
+#define CHECK_LPOS() \
+ do { \
+ lpos++; \
+ if (lpos >= _rl_screenwidth) \
+ { \
+ if (newlines >= (inv_lbsize - 2)) \
+ { \
+ inv_lbsize *= 2; \
+ inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
+ } \
+ inv_lbreaks[++newlines] = out; \
+ if (newlines >= (line_state_invisible->wbsize - 1)) \
+ { \
+ line_state_invisible->wbsize *= 2; \
+ line_state_invisible->wrapped_line = (int *)xrealloc (line_state_invisible->wrapped_line, line_state_invisible->wbsize * sizeof(int)); \
+ } \
+ line_state_invisible->wrapped_line[newlines] = _rl_wrapped_multicolumn; \
+ lpos = 0; \
+ } \
+ } while (0)
+#else
+#define CHECK_LPOS() \
+ do { \
+ lpos++; \
+ if (lpos >= _rl_screenwidth) \
+ { \
+ if (newlines >= (inv_lbsize - 2)) \
+ { \
+ inv_lbsize *= 2; \
+ inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
+ } \
+ inv_lbreaks[++newlines] = out; \
+ lpos = 0; \
+ } \
+ } while (0)
+#endif
+
+ /* inv_lbreaks[i] is where line i starts in the buffer. */
+ inv_lbreaks[newlines = 0] = 0;
+ lpos = prompt_physical_chars + modmark;
+
+#if defined (HANDLE_MULTIBYTE)
+ memset (line_state_invisible->wrapped_line, 0, line_state_invisible->wbsize * sizeof (int));
+ num = 0;
+#endif
+
+ /* prompt_invis_chars_first_line is the number of invisible characters in
+ the first physical line of the prompt.
+ wrap_offset - prompt_invis_chars_first_line is the number of invis
+ chars on the second (or, more generally, last) line. */
+
+ /* This is zero-based, used to set the newlines */
+ prompt_lines_estimate = lpos / _rl_screenwidth;
+
+ /* what if lpos is already >= _rl_screenwidth before we start drawing the
+ contents of the command line? */
+ while (lpos >= _rl_screenwidth)
+ {
+ int z;
+ /* fix from Darin Johnson <darin@acuson.com> for prompt string with
+ invisible characters that is longer than the screen width. The
+ prompt_invis_chars_first_line variable could be made into an array
+ saying how many invisible characters there are per line, but that's
+ probably too much work for the benefit gained. How many people have
+ prompts that exceed two physical lines?
+ Additional logic fix from Edward Catmur <ed@catmur.co.uk> */
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0 && prompt_multibyte_chars > 0)
+ {
+ n0 = num;
+ temp = local_prompt_len;
+ while (num < temp)
+ {
+ z = _rl_col_width (local_prompt, n0, num, 1);
+ if (z > _rl_screenwidth)
+ {
+ num = _rl_find_prev_mbchar (local_prompt, num, MB_FIND_ANY);
+ break;
+ }
+ else if (z == _rl_screenwidth)
+ break;
+ num++;
+ }
+ temp = num;
+ }
+ else
+#endif /* !HANDLE_MULTIBYTE */
+ temp = ((newlines + 1) * _rl_screenwidth);
+
+ /* Now account for invisible characters in the current line. */
+ /* XXX - this assumes that the invisible characters may be split, but only
+ between the first and the last lines. */
+ temp += ((local_prompt_prefix == 0) ? ((newlines == 0) ? prompt_invis_chars_first_line
+ : ((newlines == prompt_lines_estimate) ? wrap_offset : prompt_invis_chars_first_line))
+ : ((newlines == 0) ? wrap_offset : 0));
+
+ inv_lbreaks[++newlines] = temp;
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0 && prompt_multibyte_chars > 0)
+ lpos -= _rl_col_width (local_prompt, n0, num, 1);
+ else
+#endif
+ lpos -= _rl_screenwidth;
+ }
+
+ prompt_last_screen_line = newlines;
+
+ /* Draw the rest of the line (after the prompt) into invisible_line, keeping
+ track of where the cursor is (cpos_buffer_position), the number of the line containing
+ the cursor (lb_linenum), the last line number (lb_botlin and inv_botlin).
+ It maintains an array of line breaks for display (inv_lbreaks).
+ This handles expanding tabs for display and displaying meta characters. */
+ lb_linenum = 0;
+#if defined (HANDLE_MULTIBYTE)
+ in = 0;
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ memset (&ps, 0, sizeof (mbstate_t));
+ /* XXX - what if wc_bytes ends up <= 0? check for MB_INVALIDCH */
+ wc_bytes = mbrtowc (&wc, rl_line_buffer, rl_end, &ps);
+ }
+ else
+ wc_bytes = 1;
+ while (in < rl_end)
+#else
+ for (in = 0; in < rl_end; in++)
+#endif
+ {
+ c = (unsigned char)rl_line_buffer[in];
+
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ if (MB_INVALIDCH (wc_bytes))
+ {
+ /* Byte sequence is invalid or shortened. Assume that the
+ first byte represents a character. */
+ wc_bytes = 1;
+ /* Assume that a character occupies a single column. */
+ wc_width = 1;
+ memset (&ps, 0, sizeof (mbstate_t));
+ }
+ else if (MB_NULLWCH (wc_bytes))
+ break; /* Found '\0' */
+ else
+ {
+ temp = WCWIDTH (wc);
+ wc_width = (temp >= 0) ? temp : 1;
+ }
+ }
+#endif
+
+ if (out + 8 >= line_size) /* XXX - 8 for \t */
+ {
+ line_size *= 2;
+ visible_line = (char *)xrealloc (visible_line, line_size);
+ invisible_line = (char *)xrealloc (invisible_line, line_size);
+ line = invisible_line;
+ }
+
+ if (in == rl_point)
+ {
+ cpos_buffer_position = out;
+ lb_linenum = newlines;
+ }
+
+#if defined (HANDLE_MULTIBYTE)
+ if (META_CHAR (c) && _rl_output_meta_chars == 0) /* XXX - clean up */
+#else
+ if (META_CHAR (c))
+#endif
+ {
+ if (_rl_output_meta_chars == 0)
+ {
+ sprintf (line + out, "\\%o", c);
+
+ if (lpos + 4 >= _rl_screenwidth)
+ {
+ temp = _rl_screenwidth - lpos;
+ CHECK_INV_LBREAKS ();
+ inv_lbreaks[++newlines] = out + temp;
+ lpos = 4 - temp;
+ }
+ else
+ lpos += 4;
+
+ out += 4;
+ }
+ else
+ {
+ line[out++] = c;
+ CHECK_LPOS();
+ }
+ }
+#if defined (DISPLAY_TABS)
+ else if (c == '\t')
+ {
+ register int newout;
+
+#if 0
+ newout = (out | (int)7) + 1;
+#else
+ newout = out + 8 - lpos % 8;
+#endif
+ temp = newout - out;
+ if (lpos + temp >= _rl_screenwidth)
+ {
+ register int temp2;
+ temp2 = _rl_screenwidth - lpos;
+ CHECK_INV_LBREAKS ();
+ inv_lbreaks[++newlines] = out + temp2;
+ lpos = temp - temp2;
+ while (out < newout)
+ line[out++] = ' ';
+ }
+ else
+ {
+ while (out < newout)
+ line[out++] = ' ';
+ lpos += temp;
+ }
+ }
+#endif
+ else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up)
+ {
+ line[out++] = '\0'; /* XXX - sentinel */
+ CHECK_INV_LBREAKS ();
+ inv_lbreaks[++newlines] = out;
+ lpos = 0;
+ }
+ else if (CTRL_CHAR (c) || c == RUBOUT)
+ {
+ line[out++] = '^';
+ CHECK_LPOS();
+ line[out++] = CTRL_CHAR (c) ? UNCTRL (c) : '?';
+ CHECK_LPOS();
+ }
+ else
+ {
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ register int i;
+
+ _rl_wrapped_multicolumn = 0;
+
+ if (_rl_screenwidth < lpos + wc_width)
+ for (i = lpos; i < _rl_screenwidth; i++)
+ {
+ /* The space will be removed in update_line() */
+ line[out++] = ' ';
+ _rl_wrapped_multicolumn++;
+ CHECK_LPOS();
+ }
+ if (in == rl_point)
+ {
+ cpos_buffer_position = out;
+ lb_linenum = newlines;
+ }
+ for (i = in; i < in+wc_bytes; i++)
+ line[out++] = rl_line_buffer[i];
+ for (i = 0; i < wc_width; i++)
+ CHECK_LPOS();
+ }
+ else
+ {
+ line[out++] = c;
+ CHECK_LPOS();
+ }
+#else
+ line[out++] = c;
+ CHECK_LPOS();
+#endif
+ }
+
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ in += wc_bytes;
+ /* XXX - what if wc_bytes ends up <= 0? check for MB_INVALIDCH */
+ wc_bytes = mbrtowc (&wc, rl_line_buffer + in, rl_end - in, &ps);
+ }
+ else
+ in++;
+#endif
+
+ }
+ line[out] = '\0';
+ if (cpos_buffer_position < 0)
+ {
+ cpos_buffer_position = out;
+ lb_linenum = newlines;
+ }
+
+ inv_botlin = lb_botlin = newlines;
+ CHECK_INV_LBREAKS ();
+ inv_lbreaks[newlines+1] = out;
+ cursor_linenum = lb_linenum;
+
+ /* CPOS_BUFFER_POSITION == position in buffer where cursor should be placed.
+ CURSOR_LINENUM == line number where the cursor should be placed. */
+
+ /* PWP: now is when things get a bit hairy. The visible and invisible
+ line buffers are really multiple lines, which would wrap every
+ (screenwidth - 1) characters. Go through each in turn, finding
+ the changed region and updating it. The line order is top to bottom. */
+
+ /* If we can move the cursor up and down, then use multiple lines,
+ otherwise, let long lines display in a single terminal line, and
+ horizontally scroll it. */
+ displaying_prompt_first_line = 1;
+ if (_rl_horizontal_scroll_mode == 0 && _rl_term_up && *_rl_term_up)
+ {
+ int nleft, pos, changed_screen_line, tx;
+
+ if (!rl_display_fixed || forced_display)
+ {
+ forced_display = 0;
+
+ /* If we have more than a screenful of material to display, then
+ only display a screenful. We should display the last screen,
+ not the first. */
+ if (out >= _rl_screenchars)
+ {
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ out = _rl_find_prev_mbchar (line, _rl_screenchars, MB_FIND_ANY);
+ else
+ out = _rl_screenchars - 1;
+ }
+
+ /* The first line is at character position 0 in the buffer. The
+ second and subsequent lines start at inv_lbreaks[N], offset by
+ OFFSET (which has already been calculated above). */
+
+#define INVIS_FIRST() (prompt_physical_chars > _rl_screenwidth ? prompt_invis_chars_first_line : wrap_offset)
+#define WRAP_OFFSET(line, offset) ((line == 0) \
+ ? (offset ? INVIS_FIRST() : 0) \
+ : ((line == prompt_last_screen_line) ? wrap_offset-prompt_invis_chars_first_line : 0))
+#define W_OFFSET(line, offset) ((line) == 0 ? offset : 0)
+#define VIS_LLEN(l) ((l) > _rl_vis_botlin ? 0 : (vis_lbreaks[l+1] - vis_lbreaks[l]))
+#define INV_LLEN(l) (inv_lbreaks[l+1] - inv_lbreaks[l])
+#define VIS_CHARS(line) (visible_line + vis_lbreaks[line])
+#define VIS_LINE(line) ((line) > _rl_vis_botlin) ? "" : VIS_CHARS(line)
+#define INV_LINE(line) (invisible_line + inv_lbreaks[line])
+
+#define OLD_CPOS_IN_PROMPT() (cpos_adjusted == 0 && \
+ _rl_last_c_pos != o_cpos && \
+ _rl_last_c_pos > wrap_offset && \
+ o_cpos < prompt_last_invisible)
+
+ /* For each line in the buffer, do the updating display. */
+ for (linenum = 0; linenum <= inv_botlin; linenum++)
+ {
+ /* This can lead us astray if we execute a program that changes
+ the locale from a non-multibyte to a multibyte one. */
+ o_cpos = _rl_last_c_pos;
+ cpos_adjusted = 0;
+ update_line (VIS_LINE(linenum), INV_LINE(linenum), linenum,
+ VIS_LLEN(linenum), INV_LLEN(linenum), inv_botlin);
+
+ /* update_line potentially changes _rl_last_c_pos, but doesn't
+ take invisible characters into account, since _rl_last_c_pos
+ is an absolute cursor position in a multibyte locale. See
+ if compensating here is the right thing, or if we have to
+ change update_line itself. There are several cases in which
+ update_line adjusts _rl_last_c_pos itself (so it can pass
+ _rl_move_cursor_relative accurate values); it communicates
+ this back by setting cpos_adjusted. If we assume that
+ _rl_last_c_pos is correct (an absolute cursor position) each
+ time update_line is called, then we can assume in our
+ calculations that o_cpos does not need to be adjusted by
+ wrap_offset. */
+ if (linenum == 0 && (MB_CUR_MAX > 1 && rl_byte_oriented == 0) && OLD_CPOS_IN_PROMPT())
+ _rl_last_c_pos -= prompt_invis_chars_first_line; /* XXX - was wrap_offset */
+ else if (linenum == prompt_last_screen_line && prompt_physical_chars > _rl_screenwidth &&
+ (MB_CUR_MAX > 1 && rl_byte_oriented == 0) &&
+ cpos_adjusted == 0 &&
+ _rl_last_c_pos != o_cpos &&
+ _rl_last_c_pos > (prompt_last_invisible - _rl_screenwidth - prompt_invis_chars_first_line))
+ _rl_last_c_pos -= (wrap_offset-prompt_invis_chars_first_line);
+
+ /* If this is the line with the prompt, we might need to
+ compensate for invisible characters in the new line. Do
+ this only if there is not more than one new line (which
+ implies that we completely overwrite the old visible line)
+ and the new line is shorter than the old. Make sure we are
+ at the end of the new line before clearing. */
+ if (linenum == 0 &&
+ inv_botlin == 0 && _rl_last_c_pos == out &&
+ (wrap_offset > visible_wrap_offset) &&
+ (_rl_last_c_pos < visible_first_line_len))
+ {
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ nleft = _rl_screenwidth - _rl_last_c_pos;
+ else
+ nleft = _rl_screenwidth + wrap_offset - _rl_last_c_pos;
+ if (nleft)
+ _rl_clear_to_eol (nleft);
+ }
+#if 0
+ /* This segment is intended to handle the case where the prompt
+ has invisible characters on the second line and the new line
+ to be displayed needs to clear the rest of the old characters
+ out (e.g., when printing the i-search prompt). In general,
+ the case of the new line being shorter than the old.
+ Incomplete */
+ else if (linenum == prompt_last_screen_line &&
+ prompt_physical_chars > _rl_screenwidth &&
+ wrap_offset != prompt_invis_chars_first_line &&
+ _rl_last_c_pos == out &&
+#endif
+
+
+ /* Since the new first line is now visible, save its length. */
+ if (linenum == 0)
+ visible_first_line_len = (inv_botlin > 0) ? inv_lbreaks[1] : out - wrap_offset;
+ }
+
+ /* We may have deleted some lines. If so, clear the left over
+ blank ones at the bottom out. */
+ if (_rl_vis_botlin > inv_botlin)
+ {
+ char *tt;
+ for (; linenum <= _rl_vis_botlin; linenum++)
+ {
+ tt = VIS_CHARS (linenum);
+ _rl_move_vert (linenum);
+ _rl_move_cursor_relative (0, tt);
+ _rl_clear_to_eol
+ ((linenum == _rl_vis_botlin) ? strlen (tt) : _rl_screenwidth);
+ }
+ }
+ _rl_vis_botlin = inv_botlin;
+
+ /* CHANGED_SCREEN_LINE is set to 1 if we have moved to a
+ different screen line during this redisplay. */
+ changed_screen_line = _rl_last_v_pos != cursor_linenum;
+ if (changed_screen_line)
+ {
+ _rl_move_vert (cursor_linenum);
+ /* If we moved up to the line with the prompt using _rl_term_up,
+ the physical cursor position on the screen stays the same,
+ but the buffer position needs to be adjusted to account
+ for invisible characters. */
+ if ((MB_CUR_MAX == 1 || rl_byte_oriented) && cursor_linenum == 0 && wrap_offset)
+ _rl_last_c_pos += wrap_offset;
+ }
+
+ /* We have to reprint the prompt if it contains invisible
+ characters, since it's not generally OK to just reprint
+ the characters from the current cursor position. But we
+ only need to reprint it if the cursor is before the last
+ invisible character in the prompt string. */
+ nleft = prompt_visible_length + wrap_offset;
+ if (cursor_linenum == 0 && wrap_offset > 0 && _rl_last_c_pos > 0 &&
+#if 0
+ _rl_last_c_pos <= PROMPT_ENDING_INDEX && local_prompt)
+#else
+ _rl_last_c_pos < PROMPT_ENDING_INDEX && local_prompt)
+#endif
+ {
+#if defined (__MSDOS__)
+ putc ('\r', rl_outstream);
+#else
+ if (_rl_term_cr)
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+#endif
+ if (modmark)
+ _rl_output_some_chars ("*", 1);
+
+ _rl_output_some_chars (local_prompt, nleft);
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ _rl_last_c_pos = _rl_col_width (local_prompt, 0, nleft, 1) - wrap_offset + modmark;
+ else
+ _rl_last_c_pos = nleft + modmark;
+ }
+
+ /* Where on that line? And where does that line start
+ in the buffer? */
+ pos = inv_lbreaks[cursor_linenum];
+ /* nleft == number of characters in the line buffer between the
+ start of the line and the desired cursor position. */
+ nleft = cpos_buffer_position - pos;
+
+ /* NLEFT is now a number of characters in a buffer. When in a
+ multibyte locale, however, _rl_last_c_pos is an absolute cursor
+ position that doesn't take invisible characters in the prompt
+ into account. We use a fudge factor to compensate. */
+
+ /* Since _rl_backspace() doesn't know about invisible characters in the
+ prompt, and there's no good way to tell it, we compensate for
+ those characters here and call _rl_backspace() directly. */
+ if (wrap_offset && cursor_linenum == 0 && nleft < _rl_last_c_pos)
+ {
+ /* TX == new physical cursor position in multibyte locale. */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ tx = _rl_col_width (&visible_line[pos], 0, nleft, 1) - visible_wrap_offset;
+ else
+ tx = nleft;
+ if (tx >= 0 && _rl_last_c_pos > tx)
+ {
+ _rl_backspace (_rl_last_c_pos - tx); /* XXX */
+ _rl_last_c_pos = tx;
+ }
+ }
+
+ /* We need to note that in a multibyte locale we are dealing with
+ _rl_last_c_pos as an absolute cursor position, but moving to a
+ point specified by a buffer position (NLEFT) that doesn't take
+ invisible characters into account. */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ _rl_move_cursor_relative (nleft, &invisible_line[pos]);
+ else if (nleft != _rl_last_c_pos)
+ _rl_move_cursor_relative (nleft, &invisible_line[pos]);
+ }
+ }
+ else /* Do horizontal scrolling. */
+ {
+#define M_OFFSET(margin, offset) ((margin) == 0 ? offset : 0)
+ int lmargin, ndisp, nleft, phys_c_pos, t;
+
+ /* Always at top line. */
+ _rl_last_v_pos = 0;
+
+ /* Compute where in the buffer the displayed line should start. This
+ will be LMARGIN. */
+
+ /* The number of characters that will be displayed before the cursor. */
+ ndisp = cpos_buffer_position - wrap_offset;
+ nleft = prompt_visible_length + wrap_offset;
+ /* Where the new cursor position will be on the screen. This can be
+ longer than SCREENWIDTH; if it is, lmargin will be adjusted. */
+ phys_c_pos = cpos_buffer_position - (last_lmargin ? last_lmargin : wrap_offset);
+ t = _rl_screenwidth / 3;
+
+ /* If the number of characters had already exceeded the screenwidth,
+ last_lmargin will be > 0. */
+
+ /* If the number of characters to be displayed is more than the screen
+ width, compute the starting offset so that the cursor is about
+ two-thirds of the way across the screen. */
+ if (phys_c_pos > _rl_screenwidth - 2)
+ {
+ lmargin = cpos_buffer_position - (2 * t);
+ if (lmargin < 0)
+ lmargin = 0;
+ /* If the left margin would be in the middle of a prompt with
+ invisible characters, don't display the prompt at all. */
+ if (wrap_offset && lmargin > 0 && lmargin < nleft)
+ lmargin = nleft;
+ }
+ else if (ndisp < _rl_screenwidth - 2) /* XXX - was -1 */
+ lmargin = 0;
+ else if (phys_c_pos < 1)
+ {
+ /* If we are moving back towards the beginning of the line and
+ the last margin is no longer correct, compute a new one. */
+ lmargin = ((cpos_buffer_position - 1) / t) * t; /* XXX */
+ if (wrap_offset && lmargin > 0 && lmargin < nleft)
+ lmargin = nleft;
+ }
+ else
+ lmargin = last_lmargin;
+
+ displaying_prompt_first_line = lmargin < nleft;
+
+ /* If the first character on the screen isn't the first character
+ in the display line, indicate this with a special character. */
+ if (lmargin > 0)
+ line[lmargin] = '<';
+
+ /* If SCREENWIDTH characters starting at LMARGIN do not encompass
+ the whole line, indicate that with a special character at the
+ right edge of the screen. If LMARGIN is 0, we need to take the
+ wrap offset into account. */
+ t = lmargin + M_OFFSET (lmargin, wrap_offset) + _rl_screenwidth;
+ if (t < out)
+ line[t - 1] = '>';
+
+ if (rl_display_fixed == 0 || forced_display || lmargin != last_lmargin)
+ {
+ forced_display = 0;
+ o_cpos = _rl_last_c_pos;
+ cpos_adjusted = 0;
+ update_line (&visible_line[last_lmargin],
+ &invisible_line[lmargin],
+ 0,
+ _rl_screenwidth + visible_wrap_offset,
+ _rl_screenwidth + (lmargin ? 0 : wrap_offset),
+ 0);
+
+ if ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) &&
+ displaying_prompt_first_line && OLD_CPOS_IN_PROMPT())
+ _rl_last_c_pos -= prompt_invis_chars_first_line; /* XXX - was wrap_offset */
+
+ /* If the visible new line is shorter than the old, but the number
+ of invisible characters is greater, and we are at the end of
+ the new line, we need to clear to eol. */
+ t = _rl_last_c_pos - M_OFFSET (lmargin, wrap_offset);
+ if ((M_OFFSET (lmargin, wrap_offset) > visible_wrap_offset) &&
+ (_rl_last_c_pos == out) && displaying_prompt_first_line &&
+ t < visible_first_line_len)
+ {
+ nleft = _rl_screenwidth - t;
+ _rl_clear_to_eol (nleft);
+ }
+ visible_first_line_len = out - lmargin - M_OFFSET (lmargin, wrap_offset);
+ if (visible_first_line_len > _rl_screenwidth)
+ visible_first_line_len = _rl_screenwidth;
+
+ _rl_move_cursor_relative (cpos_buffer_position - lmargin, &invisible_line[lmargin]);
+ last_lmargin = lmargin;
+ }
+ }
+ fflush (rl_outstream);
+
+ /* Swap visible and non-visible lines. */
+ {
+ struct line_state *vtemp = line_state_visible;
+
+ line_state_visible = line_state_invisible;
+ line_state_invisible = vtemp;
+
+ rl_display_fixed = 0;
+ /* If we are displaying on a single line, and last_lmargin is > 0, we
+ are not displaying any invisible characters, so set visible_wrap_offset
+ to 0. */
+ if (_rl_horizontal_scroll_mode && last_lmargin)
+ visible_wrap_offset = 0;
+ else
+ visible_wrap_offset = wrap_offset;
+ }
+
+ RL_UNSETSTATE (RL_STATE_REDISPLAYING);
+ _rl_release_sigint ();
+}
+
+/* PWP: update_line() is based on finding the middle difference of each
+ line on the screen; vis:
+
+ /old first difference
+ /beginning of line | /old last same /old EOL
+ v v v v
+old: eddie> Oh, my little gruntle-buggy is to me, as lurgid as
+new: eddie> Oh, my little buggy says to me, as lurgid as
+ ^ ^ ^ ^
+ \beginning of line | \new last same \new end of line
+ \new first difference
+
+ All are character pointers for the sake of speed. Special cases for
+ no differences, as well as for end of line additions must be handled.
+
+ Could be made even smarter, but this works well enough */
+static void
+update_line (old, new, current_line, omax, nmax, inv_botlin)
+ register char *old, *new;
+ int current_line, omax, nmax, inv_botlin;
+{
+ register char *ofd, *ols, *oe, *nfd, *nls, *ne;
+ int temp, lendiff, wsatend, od, nd, twidth, o_cpos;
+ int current_invis_chars;
+ int col_lendiff, col_temp;
+ int bytes_to_insert;
+#if defined (HANDLE_MULTIBYTE)
+ mbstate_t ps_new, ps_old;
+ int new_offset, old_offset;
+#endif
+
+ /* If we're at the right edge of a terminal that supports xn, we're
+ ready to wrap around, so do so. This fixes problems with knowing
+ the exact cursor position and cut-and-paste with certain terminal
+ emulators. In this calculation, TEMP is the physical screen
+ position of the cursor. */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ temp = _rl_last_c_pos;
+ else
+ temp = _rl_last_c_pos - WRAP_OFFSET (_rl_last_v_pos, visible_wrap_offset);
+ if (temp == _rl_screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode
+ && _rl_last_v_pos == current_line - 1)
+ {
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ wchar_t wc;
+ mbstate_t ps;
+ int tempwidth, bytes;
+ size_t ret;
+
+ /* This fixes only double-column characters, but if the wrapped
+ character comsumes more than three columns, spaces will be
+ inserted in the string buffer. */
+ if (current_line < line_state_visible->wbsize && line_state_visible->wrapped_line[current_line] > 0)
+ _rl_clear_to_eol (line_state_visible->wrapped_line[current_line]);
+
+ memset (&ps, 0, sizeof (mbstate_t));
+ ret = mbrtowc (&wc, new, MB_CUR_MAX, &ps);
+ if (MB_INVALIDCH (ret))
+ {
+ tempwidth = 1;
+ ret = 1;
+ }
+ else if (MB_NULLWCH (ret))
+ tempwidth = 0;
+ else
+ tempwidth = WCWIDTH (wc);
+
+ if (tempwidth > 0)
+ {
+ int count, i;
+ bytes = ret;
+ for (count = 0; count < bytes; count++)
+ putc (new[count], rl_outstream);
+ _rl_last_c_pos = tempwidth;
+ _rl_last_v_pos++;
+ memset (&ps, 0, sizeof (mbstate_t));
+ ret = mbrtowc (&wc, old, MB_CUR_MAX, &ps);
+ if (ret != 0 && bytes != 0)
+ {
+ if (MB_INVALIDCH (ret))
+ ret = 1;
+ memmove (old+bytes, old+ret, strlen (old+ret));
+ memcpy (old, new, bytes);
+ /* Fix up indices if we copy data from one line to another */
+ omax += bytes - ret;
+ for (i = current_line+1; i <= inv_botlin+1; i++)
+ vis_lbreaks[i] += bytes - ret;
+ }
+ }
+ else
+ {
+ putc (' ', rl_outstream);
+ _rl_last_c_pos = 1;
+ _rl_last_v_pos++;
+ if (old[0] && new[0])
+ old[0] = new[0];
+ }
+ }
+ else
+#endif
+ {
+ if (new[0])
+ putc (new[0], rl_outstream);
+ else
+ putc (' ', rl_outstream);
+ _rl_last_c_pos = 1;
+ _rl_last_v_pos++;
+ if (old[0] && new[0])
+ old[0] = new[0];
+ }
+ }
+
+
+ /* Find first difference. */
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ /* See if the old line is a subset of the new line, so that the
+ only change is adding characters. */
+ temp = (omax < nmax) ? omax : nmax;
+ if (memcmp (old, new, temp) == 0) /* adding at the end */
+ {
+ new_offset = old_offset = temp;
+ ofd = old + temp;
+ nfd = new + temp;
+ }
+ else
+ {
+ memset (&ps_new, 0, sizeof(mbstate_t));
+ memset (&ps_old, 0, sizeof(mbstate_t));
+
+ if (omax == nmax && STREQN (new, old, omax))
+ {
+ old_offset = omax;
+ new_offset = nmax;
+ ofd = old + omax;
+ nfd = new + nmax;
+ }
+ else
+ {
+ new_offset = old_offset = 0;
+ for (ofd = old, nfd = new;
+ (ofd - old < omax) && *ofd &&
+ _rl_compare_chars(old, old_offset, &ps_old, new, new_offset, &ps_new); )
+ {
+ old_offset = _rl_find_next_mbchar (old, old_offset, 1, MB_FIND_ANY);
+ new_offset = _rl_find_next_mbchar (new, new_offset, 1, MB_FIND_ANY);
+
+ ofd = old + old_offset;
+ nfd = new + new_offset;
+ }
+ }
+ }
+ }
+ else
+#endif
+ for (ofd = old, nfd = new;
+ (ofd - old < omax) && *ofd && (*ofd == *nfd);
+ ofd++, nfd++)
+ ;
+
+ /* Move to the end of the screen line. ND and OD are used to keep track
+ of the distance between ne and new and oe and old, respectively, to
+ move a subtraction out of each loop. */
+ for (od = ofd - old, oe = ofd; od < omax && *oe; oe++, od++);
+ for (nd = nfd - new, ne = nfd; nd < nmax && *ne; ne++, nd++);
+
+ /* If no difference, continue to next line. */
+ if (ofd == oe && nfd == ne)
+ return;
+
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0 && _rl_utf8locale)
+ {
+ wchar_t wc;
+ mbstate_t ps = { 0 };
+ int t;
+
+ /* If the first character in the difference is a zero-width character,
+ assume it's a combining character and back one up so the two base
+ characters no longer compare equivalently. */
+ t = mbrtowc (&wc, ofd, MB_CUR_MAX, &ps);
+ if (t > 0 && UNICODE_COMBINING_CHAR (wc) && WCWIDTH (wc) == 0)
+ {
+ old_offset = _rl_find_prev_mbchar (old, ofd - old, MB_FIND_ANY);
+ new_offset = _rl_find_prev_mbchar (new, nfd - new, MB_FIND_ANY);
+ ofd = old + old_offset; /* equal by definition */
+ nfd = new + new_offset;
+ }
+ }
+#endif
+
+ wsatend = 1; /* flag for trailing whitespace */
+
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ ols = old + _rl_find_prev_mbchar (old, oe - old, MB_FIND_ANY);
+ nls = new + _rl_find_prev_mbchar (new, ne - new, MB_FIND_ANY);
+
+ while ((ols > ofd) && (nls > nfd))
+ {
+ memset (&ps_old, 0, sizeof (mbstate_t));
+ memset (&ps_new, 0, sizeof (mbstate_t));
+
+#if 0
+ /* On advice from jir@yamato.ibm.com */
+ _rl_adjust_point (old, ols - old, &ps_old);
+ _rl_adjust_point (new, nls - new, &ps_new);
+#endif
+
+ if (_rl_compare_chars (old, ols - old, &ps_old, new, nls - new, &ps_new) == 0)
+ break;
+
+ if (*ols == ' ')
+ wsatend = 0;
+
+ ols = old + _rl_find_prev_mbchar (old, ols - old, MB_FIND_ANY);
+ nls = new + _rl_find_prev_mbchar (new, nls - new, MB_FIND_ANY);
+ }
+ }
+ else
+ {
+#endif /* HANDLE_MULTIBYTE */
+ ols = oe - 1; /* find last same */
+ nls = ne - 1;
+ while ((ols > ofd) && (nls > nfd) && (*ols == *nls))
+ {
+ if (*ols != ' ')
+ wsatend = 0;
+ ols--;
+ nls--;
+ }
+#if defined (HANDLE_MULTIBYTE)
+ }
+#endif
+
+ if (wsatend)
+ {
+ ols = oe;
+ nls = ne;
+ }
+#if defined (HANDLE_MULTIBYTE)
+ /* This may not work for stateful encoding, but who cares? To handle
+ stateful encoding properly, we have to scan each string from the
+ beginning and compare. */
+ else if (_rl_compare_chars (ols, 0, NULL, nls, 0, NULL) == 0)
+#else
+ else if (*ols != *nls)
+#endif
+ {
+ if (*ols) /* don't step past the NUL */
+ {
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ ols = old + _rl_find_next_mbchar (old, ols - old, 1, MB_FIND_ANY);
+ else
+ ols++;
+ }
+ if (*nls)
+ {
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ nls = new + _rl_find_next_mbchar (new, nls - new, 1, MB_FIND_ANY);
+ else
+ nls++;
+ }
+ }
+
+ /* count of invisible characters in the current invisible line. */
+ current_invis_chars = W_OFFSET (current_line, wrap_offset);
+ if (_rl_last_v_pos != current_line)
+ {
+ _rl_move_vert (current_line);
+ if ((MB_CUR_MAX == 1 || rl_byte_oriented) && current_line == 0 && visible_wrap_offset)
+ _rl_last_c_pos += visible_wrap_offset;
+ }
+
+ /* If this is the first line and there are invisible characters in the
+ prompt string, and the prompt string has not changed, and the current
+ cursor position is before the last invisible character in the prompt,
+ and the index of the character to move to is past the end of the prompt
+ string, then redraw the entire prompt string. We can only do this
+ reliably if the terminal supports a `cr' capability.
+
+ This is not an efficiency hack -- there is a problem with redrawing
+ portions of the prompt string if they contain terminal escape
+ sequences (like drawing the `unbold' sequence without a corresponding
+ `bold') that manifests itself on certain terminals. */
+
+ lendiff = local_prompt_len;
+ od = ofd - old; /* index of first difference in visible line */
+ if (current_line == 0 && !_rl_horizontal_scroll_mode &&
+ _rl_term_cr && lendiff > prompt_visible_length && _rl_last_c_pos > 0 &&
+ od >= lendiff && _rl_last_c_pos < PROMPT_ENDING_INDEX)
+ {
+#if defined (__MSDOS__)
+ putc ('\r', rl_outstream);
+#else
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+#endif
+ if (modmark)
+ _rl_output_some_chars ("*", 1);
+ _rl_output_some_chars (local_prompt, lendiff);
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ /* We take wrap_offset into account here so we can pass correct
+ information to _rl_move_cursor_relative. */
+ _rl_last_c_pos = _rl_col_width (local_prompt, 0, lendiff, 1) - wrap_offset + modmark;
+ cpos_adjusted = 1;
+ }
+ else
+ _rl_last_c_pos = lendiff + modmark;
+ }
+
+ o_cpos = _rl_last_c_pos;
+
+ /* When this function returns, _rl_last_c_pos is correct, and an absolute
+ cursor postion in multibyte mode, but a buffer index when not in a
+ multibyte locale. */
+ _rl_move_cursor_relative (od, old);
+
+#if defined (HANDLE_MULTIBYTE)
+ /* We need to indicate that the cursor position is correct in the presence of
+ invisible characters in the prompt string. Let's see if setting this when
+ we make sure we're at the end of the drawn prompt string works. */
+ if (current_line == 0 && MB_CUR_MAX > 1 && rl_byte_oriented == 0 &&
+ (_rl_last_c_pos > 0 || o_cpos > 0) &&
+ _rl_last_c_pos == prompt_physical_chars)
+ cpos_adjusted = 1;
+#endif
+
+ /* if (len (new) > len (old))
+ lendiff == difference in buffer (bytes)
+ col_lendiff == difference on screen (columns)
+ When not using multibyte characters, these are equal */
+ lendiff = (nls - nfd) - (ols - ofd);
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ col_lendiff = _rl_col_width (new, nfd - new, nls - new, 1) - _rl_col_width (old, ofd - old, ols - old, 1);
+ else
+ col_lendiff = lendiff;
+
+ /* If we are changing the number of invisible characters in a line, and
+ the spot of first difference is before the end of the invisible chars,
+ lendiff needs to be adjusted. */
+ if (current_line == 0 && !_rl_horizontal_scroll_mode &&
+ current_invis_chars != visible_wrap_offset)
+ {
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ lendiff += visible_wrap_offset - current_invis_chars;
+ col_lendiff += visible_wrap_offset - current_invis_chars;
+ }
+ else
+ {
+ lendiff += visible_wrap_offset - current_invis_chars;
+ col_lendiff = lendiff;
+ }
+ }
+
+ /* We use temp as a count of the number of bytes from the first difference
+ to the end of the new line. col_temp is the corresponding number of
+ screen columns. A `dumb' update moves to the spot of first difference
+ and writes TEMP bytes. */
+ /* Insert (diff (len (old), len (new)) ch. */
+ temp = ne - nfd;
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ col_temp = _rl_col_width (new, nfd - new, ne - new, 1);
+ else
+ col_temp = temp;
+
+ /* how many bytes from the new line buffer to write to the display */
+ bytes_to_insert = nls - nfd;
+
+ /* col_lendiff > 0 if we are adding characters to the line */
+ if (col_lendiff > 0) /* XXX - was lendiff */
+ {
+ /* Non-zero if we're increasing the number of lines. */
+ int gl = current_line >= _rl_vis_botlin && inv_botlin > _rl_vis_botlin;
+ /* If col_lendiff is > 0, implying that the new string takes up more
+ screen real estate than the old, but lendiff is < 0, meaning that it
+ takes fewer bytes, we need to just output the characters starting
+ from the first difference. These will overwrite what is on the
+ display, so there's no reason to do a smart update. This can really
+ only happen in a multibyte environment. */
+ if (lendiff < 0)
+ {
+ _rl_output_some_chars (nfd, temp);
+ _rl_last_c_pos += col_temp; /* XXX - was _rl_col_width (nfd, 0, temp, 1); */
+ /* If nfd begins before any invisible characters in the prompt,
+ adjust _rl_last_c_pos to account for wrap_offset and set
+ cpos_adjusted to let the caller know. */
+ if (current_line == 0 && displaying_prompt_first_line && wrap_offset && ((nfd - new) <= prompt_last_invisible))
+ {
+ _rl_last_c_pos -= wrap_offset;
+ cpos_adjusted = 1;
+ }
+ return;
+ }
+ /* Sometimes it is cheaper to print the characters rather than
+ use the terminal's capabilities. If we're growing the number
+ of lines, make sure we actually cause the new line to wrap
+ around on auto-wrapping terminals. */
+ else if (_rl_terminal_can_insert && ((2 * col_temp) >= col_lendiff || _rl_term_IC) && (!_rl_term_autowrap || !gl))
+ {
+ /* If lendiff > prompt_visible_length and _rl_last_c_pos == 0 and
+ _rl_horizontal_scroll_mode == 1, inserting the characters with
+ _rl_term_IC or _rl_term_ic will screw up the screen because of the
+ invisible characters. We need to just draw them. */
+ /* The same thing happens if we're trying to draw before the last
+ invisible character in the prompt string or we're increasing the
+ number of invisible characters in the line and we're not drawing
+ the entire prompt string. */
+ if (*ols && ((_rl_horizontal_scroll_mode &&
+ _rl_last_c_pos == 0 &&
+ lendiff > prompt_visible_length &&
+ current_invis_chars > 0) == 0) &&
+ (((MB_CUR_MAX > 1 && rl_byte_oriented == 0) &&
+ current_line == 0 && wrap_offset &&
+ ((nfd - new) <= prompt_last_invisible) &&
+ (col_lendiff < prompt_visible_length)) == 0) &&
+ (visible_wrap_offset >= current_invis_chars))
+ {
+ open_some_spaces (col_lendiff);
+ _rl_output_some_chars (nfd, bytes_to_insert);
+ _rl_last_c_pos += _rl_col_width (nfd, 0, bytes_to_insert, 1);
+ }
+ else if ((MB_CUR_MAX == 1 || rl_byte_oriented != 0) && *ols == 0 && lendiff > 0)
+ {
+ /* At the end of a line the characters do not have to
+ be "inserted". They can just be placed on the screen. */
+ /* However, this screws up the rest of this block, which
+ assumes you've done the insert because you can. */
+ _rl_output_some_chars (nfd, lendiff);
+ _rl_last_c_pos += col_lendiff;
+ }
+ else /* just write from first difference to end of new line */
+ {
+ _rl_output_some_chars (nfd, temp);
+ _rl_last_c_pos += col_temp;
+ /* If nfd begins before the last invisible character in the
+ prompt, adjust _rl_last_c_pos to account for wrap_offset
+ and set cpos_adjusted to let the caller know. */
+ if ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) && current_line == 0 && displaying_prompt_first_line && wrap_offset && ((nfd - new) <= prompt_last_invisible))
+ {
+ _rl_last_c_pos -= wrap_offset;
+ cpos_adjusted = 1;
+ }
+ return;
+ }
+
+ if (bytes_to_insert > lendiff)
+ {
+ /* If nfd begins before the last invisible character in the
+ prompt, adjust _rl_last_c_pos to account for wrap_offset
+ and set cpos_adjusted to let the caller know. */
+ if ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) && current_line == 0 && displaying_prompt_first_line && wrap_offset && ((nfd - new) <= prompt_last_invisible))
+ {
+ _rl_last_c_pos -= wrap_offset;
+ cpos_adjusted = 1;
+ }
+ }
+ }
+ else
+ {
+ /* cannot insert chars, write to EOL */
+ _rl_output_some_chars (nfd, temp);
+ _rl_last_c_pos += col_temp;
+ /* If we're in a multibyte locale and were before the last invisible
+ char in the current line (which implies we just output some invisible
+ characters) we need to adjust _rl_last_c_pos, since it represents
+ a physical character position. */
+ if ((MB_CUR_MAX > 1 && rl_byte_oriented == 0) &&
+ current_line == prompt_last_screen_line && wrap_offset &&
+ displaying_prompt_first_line &&
+ wrap_offset != prompt_invis_chars_first_line &&
+ ((nfd-new) < (prompt_last_invisible-(current_line*_rl_screenwidth))))
+ {
+ _rl_last_c_pos -= wrap_offset - prompt_invis_chars_first_line;
+ cpos_adjusted = 1;
+ }
+ }
+ }
+ else /* Delete characters from line. */
+ {
+ /* If possible and inexpensive to use terminal deletion, then do so. */
+ if (_rl_term_dc && (2 * col_temp) >= -col_lendiff)
+ {
+ /* If all we're doing is erasing the invisible characters in the
+ prompt string, don't bother. It screws up the assumptions
+ about what's on the screen. */
+ if (_rl_horizontal_scroll_mode && _rl_last_c_pos == 0 &&
+ displaying_prompt_first_line &&
+ -lendiff == visible_wrap_offset)
+ col_lendiff = 0;
+
+ /* If we have moved lmargin and we're shrinking the line, we've
+ already moved the cursor to the first character of the new line,
+ so deleting -col_lendiff characters will mess up the cursor
+ position calculation */
+ if (_rl_horizontal_scroll_mode && displaying_prompt_first_line == 0 &&
+ col_lendiff && _rl_last_c_pos < -col_lendiff)
+ col_lendiff = 0;
+
+ if (col_lendiff)
+ delete_chars (-col_lendiff); /* delete (diff) characters */
+
+ /* Copy (new) chars to screen from first diff to last match,
+ overwriting what is there. */
+ if (bytes_to_insert > 0)
+ {
+ /* If nfd begins at the prompt, or before the invisible
+ characters in the prompt, we need to adjust _rl_last_c_pos
+ in a multibyte locale to account for the wrap offset and
+ set cpos_adjusted accordingly. */
+ _rl_output_some_chars (nfd, bytes_to_insert);
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ _rl_last_c_pos += _rl_col_width (nfd, 0, bytes_to_insert, 1);
+ if (current_line == 0 && wrap_offset &&
+ displaying_prompt_first_line &&
+ _rl_last_c_pos > wrap_offset &&
+ ((nfd - new) <= prompt_last_invisible))
+ {
+ _rl_last_c_pos -= wrap_offset;
+ cpos_adjusted = 1;
+ }
+ }
+ else
+ _rl_last_c_pos += bytes_to_insert;
+
+ if (_rl_horizontal_scroll_mode && ((oe-old) > (ne-new)))
+ goto clear_rest_of_line;
+ }
+ }
+ /* Otherwise, print over the existing material. */
+ else
+ {
+ if (temp > 0)
+ {
+ /* If nfd begins at the prompt, or before the invisible
+ characters in the prompt, we need to adjust _rl_last_c_pos
+ in a multibyte locale to account for the wrap offset and
+ set cpos_adjusted accordingly. */
+ _rl_output_some_chars (nfd, temp);
+ _rl_last_c_pos += col_temp; /* XXX */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ if (current_line == 0 && wrap_offset &&
+ displaying_prompt_first_line &&
+ _rl_last_c_pos > wrap_offset &&
+ ((nfd - new) <= prompt_last_invisible))
+ {
+ _rl_last_c_pos -= wrap_offset;
+ cpos_adjusted = 1;
+ }
+ }
+ }
+clear_rest_of_line:
+ lendiff = (oe - old) - (ne - new);
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ col_lendiff = _rl_col_width (old, 0, oe - old, 1) - _rl_col_width (new, 0, ne - new, 1);
+ else
+ col_lendiff = lendiff;
+
+ /* If we've already printed over the entire width of the screen,
+ including the old material, then col_lendiff doesn't matter and
+ space_to_eol will insert too many spaces. XXX - maybe we should
+ adjust col_lendiff based on the difference between _rl_last_c_pos
+ and _rl_screenwidth */
+ if (col_lendiff && ((MB_CUR_MAX == 1 || rl_byte_oriented) || (_rl_last_c_pos < _rl_screenwidth)))
+ {
+ if (_rl_term_autowrap && current_line < inv_botlin)
+ space_to_eol (col_lendiff);
+ else
+ _rl_clear_to_eol (col_lendiff);
+ }
+ }
+ }
+}
+
+/* Tell the update routines that we have moved onto a new (empty) line. */
+int
+rl_on_new_line ()
+{
+ if (visible_line)
+ visible_line[0] = '\0';
+
+ _rl_last_c_pos = _rl_last_v_pos = 0;
+ _rl_vis_botlin = last_lmargin = 0;
+ if (vis_lbreaks)
+ vis_lbreaks[0] = vis_lbreaks[1] = 0;
+ visible_wrap_offset = 0;
+ return 0;
+}
+
+/* Tell the update routines that we have moved onto a new line with the
+ prompt already displayed. Code originally from the version of readline
+ distributed with CLISP. rl_expand_prompt must have already been called
+ (explicitly or implicitly). This still doesn't work exactly right. */
+int
+rl_on_new_line_with_prompt ()
+{
+ int prompt_size, i, l, real_screenwidth, newlines;
+ char *prompt_last_line, *lprompt;
+
+ /* Initialize visible_line and invisible_line to ensure that they can hold
+ the already-displayed prompt. */
+ prompt_size = strlen (rl_prompt) + 1;
+ init_line_structures (prompt_size);
+
+ /* Make sure the line structures hold the already-displayed prompt for
+ redisplay. */
+ lprompt = local_prompt ? local_prompt : rl_prompt;
+ strcpy (visible_line, lprompt);
+ strcpy (invisible_line, lprompt);
+
+ /* If the prompt contains newlines, take the last tail. */
+ prompt_last_line = strrchr (rl_prompt, '\n');
+ if (!prompt_last_line)
+ prompt_last_line = rl_prompt;
+
+ l = strlen (prompt_last_line);
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ _rl_last_c_pos = _rl_col_width (prompt_last_line, 0, l, 1); /* XXX */
+ else
+ _rl_last_c_pos = l;
+
+ /* Dissect prompt_last_line into screen lines. Note that here we have
+ to use the real screenwidth. Readline's notion of screenwidth might be
+ one less, see terminal.c. */
+ real_screenwidth = _rl_screenwidth + (_rl_term_autowrap ? 0 : 1);
+ _rl_last_v_pos = l / real_screenwidth;
+ /* If the prompt length is a multiple of real_screenwidth, we don't know
+ whether the cursor is at the end of the last line, or already at the
+ beginning of the next line. Output a newline just to be safe. */
+ if (l > 0 && (l % real_screenwidth) == 0)
+ _rl_output_some_chars ("\n", 1);
+ last_lmargin = 0;
+
+ newlines = 0; i = 0;
+ while (i <= l)
+ {
+ _rl_vis_botlin = newlines;
+ vis_lbreaks[newlines++] = i;
+ i += real_screenwidth;
+ }
+ vis_lbreaks[newlines] = l;
+ visible_wrap_offset = 0;
+
+ rl_display_prompt = rl_prompt; /* XXX - make sure it's set */
+
+ return 0;
+}
+
+/* Actually update the display, period. */
+int
+rl_forced_update_display ()
+{
+ register char *temp;
+
+ if (visible_line)
+ {
+ temp = visible_line;
+ while (*temp)
+ *temp++ = '\0';
+ }
+ rl_on_new_line ();
+ forced_display++;
+ (*rl_redisplay_function) ();
+ return 0;
+}
+
+/* Move the cursor from _rl_last_c_pos to NEW, which are buffer indices.
+ (Well, when we don't have multibyte characters, _rl_last_c_pos is a
+ buffer index.)
+ DATA is the contents of the screen line of interest; i.e., where
+ the movement is being done. */
+void
+_rl_move_cursor_relative (new, data)
+ int new;
+ const char *data;
+{
+ register int i;
+ int woff; /* number of invisible chars on current line */
+ int cpos, dpos; /* current and desired cursor positions */
+ int adjust;
+
+ woff = WRAP_OFFSET (_rl_last_v_pos, wrap_offset);
+ cpos = _rl_last_c_pos;
+
+ if (cpos == 0 && cpos == new)
+ return;
+
+#if defined (HANDLE_MULTIBYTE)
+ /* If we have multibyte characters, NEW is indexed by the buffer point in
+ a multibyte string, but _rl_last_c_pos is the display position. In
+ this case, NEW's display position is not obvious and must be
+ calculated. We need to account for invisible characters in this line,
+ as long as we are past them and they are counted by _rl_col_width. */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ adjust = 1;
+ /* Try to short-circuit common cases and eliminate a bunch of multibyte
+ character function calls. */
+ /* 1. prompt string */
+ if (new == local_prompt_len && memcmp (data, local_prompt, new) == 0)
+ {
+ dpos = prompt_physical_chars;
+ cpos_adjusted = 1;
+ adjust = 0;
+ }
+ /* 2. prompt_string + line contents */
+ else if (new > local_prompt_len && local_prompt && memcmp (data, local_prompt, local_prompt_len) == 0)
+ {
+ dpos = prompt_physical_chars + _rl_col_width (data, local_prompt_len, new, 1);
+ cpos_adjusted = 1;
+ adjust = 0;
+ }
+ else
+ dpos = _rl_col_width (data, 0, new, 1);
+
+ if (displaying_prompt_first_line == 0)
+ adjust = 0;
+
+ /* Use NEW when comparing against the last invisible character in the
+ prompt string, since they're both buffer indices and DPOS is a
+ desired display position. */
+ if (adjust && ((new > prompt_last_invisible) || /* XXX - don't use woff here */
+ (prompt_physical_chars >= _rl_screenwidth &&
+ _rl_last_v_pos == prompt_last_screen_line &&
+ wrap_offset >= woff && dpos >= woff &&
+ new > (prompt_last_invisible-(_rl_screenwidth*_rl_last_v_pos)-wrap_offset))))
+ /* XXX last comparison might need to be >= */
+ {
+ dpos -= woff;
+ /* Since this will be assigned to _rl_last_c_pos at the end (more
+ precisely, _rl_last_c_pos == dpos when this function returns),
+ let the caller know. */
+ cpos_adjusted = 1;
+ }
+ }
+ else
+#endif
+ dpos = new;
+
+ /* If we don't have to do anything, then return. */
+ if (cpos == dpos)
+ return;
+
+ /* It may be faster to output a CR, and then move forwards instead
+ of moving backwards. */
+ /* i == current physical cursor position. */
+#if defined (HANDLE_MULTIBYTE)
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ i = _rl_last_c_pos;
+ else
+#endif
+ i = _rl_last_c_pos - woff;
+ if (dpos == 0 || CR_FASTER (dpos, _rl_last_c_pos) ||
+ (_rl_term_autowrap && i == _rl_screenwidth))
+ {
+#if defined (__MSDOS__)
+ putc ('\r', rl_outstream);
+#else
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+#endif /* !__MSDOS__ */
+ cpos = _rl_last_c_pos = 0;
+ }
+
+ if (cpos < dpos)
+ {
+ /* Move the cursor forward. We do it by printing the command
+ to move the cursor forward if there is one, else print that
+ portion of the output buffer again. Which is cheaper? */
+
+ /* The above comment is left here for posterity. It is faster
+ to print one character (non-control) than to print a control
+ sequence telling the terminal to move forward one character.
+ That kind of control is for people who don't know what the
+ data is underneath the cursor. */
+
+ /* However, we need a handle on where the current display position is
+ in the buffer for the immediately preceding comment to be true.
+ In multibyte locales, we don't currently have that info available.
+ Without it, we don't know where the data we have to display begins
+ in the buffer and we have to go back to the beginning of the screen
+ line. In this case, we can use the terminal sequence to move forward
+ if it's available. */
+ if (MB_CUR_MAX > 1 && rl_byte_oriented == 0)
+ {
+ if (_rl_term_forward_char)
+ {
+ for (i = cpos; i < dpos; i++)
+ tputs (_rl_term_forward_char, 1, _rl_output_character_function);
+ }
+ else
+ {
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+ for (i = 0; i < new; i++)
+ putc (data[i], rl_outstream);
+ }
+ }
+ else
+ for (i = cpos; i < new; i++)
+ putc (data[i], rl_outstream);
+ }
+
+#if defined (HANDLE_MULTIBYTE)
+ /* NEW points to the buffer point, but _rl_last_c_pos is the display point.
+ The byte length of the string is probably bigger than the column width
+ of the string, which means that if NEW == _rl_last_c_pos, then NEW's
+ display point is less than _rl_last_c_pos. */
+#endif
+ else if (cpos > dpos)
+ _rl_backspace (cpos - dpos);
+
+ _rl_last_c_pos = dpos;
+}
+
+/* PWP: move the cursor up or down. */
+void
+_rl_move_vert (to)
+ int to;
+{
+ register int delta, i;
+
+ if (_rl_last_v_pos == to || to > _rl_screenheight)
+ return;
+
+ if ((delta = to - _rl_last_v_pos) > 0)
+ {
+ for (i = 0; i < delta; i++)
+ putc ('\n', rl_outstream);
+#if defined (__MSDOS__)
+ putc ('\r', rl_outstream);
+#else
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+#endif
+ _rl_last_c_pos = 0;
+ }
+ else
+ { /* delta < 0 */
+#ifdef __DJGPP__
+ int row, col;
+
+ fflush (rl_outstream);
+ ScreenGetCursor (&row, &col);
+ ScreenSetCursor (row + delta, col);
+ i = -delta;
+#else
+ if (_rl_term_up && *_rl_term_up)
+ for (i = 0; i < -delta; i++)
+ tputs (_rl_term_up, 1, _rl_output_character_function);
+#endif /* !__DJGPP__ */
+ }
+
+ _rl_last_v_pos = to; /* Now TO is here */
+}
+
+/* Physically print C on rl_outstream. This is for functions which know
+ how to optimize the display. Return the number of characters output. */
+int
+rl_show_char (c)
+ int c;
+{
+ int n = 1;
+ if (META_CHAR (c) && (_rl_output_meta_chars == 0))
+ {
+ fprintf (rl_outstream, "M-");
+ n += 2;
+ c = UNMETA (c);
+ }
+
+#if defined (DISPLAY_TABS)
+ if ((CTRL_CHAR (c) && c != '\t') || c == RUBOUT)
+#else
+ if (CTRL_CHAR (c) || c == RUBOUT)
+#endif /* !DISPLAY_TABS */
+ {
+ fprintf (rl_outstream, "C-");
+ n += 2;
+ c = CTRL_CHAR (c) ? UNCTRL (c) : '?';
+ }
+
+ putc (c, rl_outstream);
+ fflush (rl_outstream);
+ return n;
+}
+
+int
+rl_character_len (c, pos)
+ register int c, pos;
+{
+ unsigned char uc;
+
+ uc = (unsigned char)c;
+
+ if (META_CHAR (uc))
+ return ((_rl_output_meta_chars == 0) ? 4 : 1);
+
+ if (uc == '\t')
+ {
+#if defined (DISPLAY_TABS)
+ return (((pos | 7) + 1) - pos);
+#else
+ return (2);
+#endif /* !DISPLAY_TABS */
+ }
+
+ if (CTRL_CHAR (c) || c == RUBOUT)
+ return (2);
+
+ return ((ISPRINT (uc)) ? 1 : 2);
+}
+/* How to print things in the "echo-area". The prompt is treated as a
+ mini-modeline. */
+static int msg_saved_prompt = 0;
+
+#if defined (USE_VARARGS)
+int
+#if defined (PREFER_STDARG)
+rl_message (const char *format, ...)
+#else
+rl_message (va_alist)
+ va_dcl
+#endif
+{
+ va_list args;
+#if defined (PREFER_VARARGS)
+ char *format;
+#endif
+#if defined (HAVE_VSNPRINTF)
+ int bneed;
+#endif
+
+#if defined (PREFER_STDARG)
+ va_start (args, format);
+#else
+ va_start (args);
+ format = va_arg (args, char *);
+#endif
+
+ if (msg_buf == 0)
+ msg_buf = xmalloc (msg_bufsiz = 128);
+
+#if defined (HAVE_VSNPRINTF)
+ bneed = vsnprintf (msg_buf, msg_bufsiz - 1, format, args);
+ if (bneed >= msg_bufsiz - 1)
+ {
+ msg_bufsiz = bneed + 1;
+ msg_buf = xrealloc (msg_buf, msg_bufsiz);
+ va_end (args);
+
+#if defined (PREFER_STDARG)
+ va_start (args, format);
+#else
+ va_start (args);
+ format = va_arg (args, char *);
+#endif
+ vsnprintf (msg_buf, msg_bufsiz - 1, format, args);
+ }
+#else
+ vsprintf (msg_buf, format, args);
+ msg_buf[msg_bufsiz - 1] = '\0'; /* overflow? */
+#endif
+ va_end (args);
+
+ if (saved_local_prompt == 0)
+ {
+ rl_save_prompt ();
+ msg_saved_prompt = 1;
+ }
+ else if (local_prompt != saved_local_prompt)
+ {
+ FREE (local_prompt);
+ FREE (local_prompt_prefix);
+ local_prompt = (char *)NULL;
+ }
+ rl_display_prompt = msg_buf;
+ local_prompt = expand_prompt (msg_buf, &prompt_visible_length,
+ &prompt_last_invisible,
+ &prompt_invis_chars_first_line,
+ &prompt_physical_chars);
+ local_prompt_prefix = (char *)NULL;
+ local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
+ (*rl_redisplay_function) ();
+
+ return 0;
+}
+#else /* !USE_VARARGS */
+int
+rl_message (format, arg1, arg2)
+ char *format;
+{
+ if (msg_buf == 0)
+ msg_buf = xmalloc (msg_bufsiz = 128);
+
+ sprintf (msg_buf, format, arg1, arg2);
+ msg_buf[msg_bufsiz - 1] = '\0'; /* overflow? */
+
+ rl_display_prompt = msg_buf;
+ if (saved_local_prompt == 0)
+ {
+ rl_save_prompt ();
+ msg_saved_prompt = 1;
+ }
+ else if (local_prompt != saved_local_prompt)
+ {
+ FREE (local_prompt);
+ FREE (local_prompt_prefix);
+ local_prompt = (char *)NULL;
+ }
+ local_prompt = expand_prompt (msg_buf, &prompt_visible_length,
+ &prompt_last_invisible,
+ &prompt_invis_chars_first_line,
+ &prompt_physical_chars);
+ local_prompt_prefix = (char *)NULL;
+ local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
+ (*rl_redisplay_function) ();
+
+ return 0;
+}
+#endif /* !USE_VARARGS */
+
+/* How to clear things from the "echo-area". */
+int
+rl_clear_message ()
+{
+ rl_display_prompt = rl_prompt;
+ if (msg_saved_prompt)
+ {
+ rl_restore_prompt ();
+ msg_saved_prompt = 0;
+ }
+ (*rl_redisplay_function) ();
+ return 0;
+}
+
+int
+rl_reset_line_state ()
+{
+ rl_on_new_line ();
+
+ rl_display_prompt = rl_prompt ? rl_prompt : "";
+ forced_display = 1;
+ return 0;
+}
+
+void
+rl_save_prompt ()
+{
+ saved_local_prompt = local_prompt;
+ saved_local_prefix = local_prompt_prefix;
+ saved_prefix_length = prompt_prefix_length;
+ saved_local_length = local_prompt_len;
+ saved_last_invisible = prompt_last_invisible;
+ saved_visible_length = prompt_visible_length;
+ saved_invis_chars_first_line = prompt_invis_chars_first_line;
+ saved_physical_chars = prompt_physical_chars;
+
+ local_prompt = local_prompt_prefix = (char *)0;
+ local_prompt_len = 0;
+ prompt_last_invisible = prompt_visible_length = prompt_prefix_length = 0;
+ prompt_invis_chars_first_line = prompt_physical_chars = 0;
+}
+
+void
+rl_restore_prompt ()
+{
+ FREE (local_prompt);
+ FREE (local_prompt_prefix);
+
+ local_prompt = saved_local_prompt;
+ local_prompt_prefix = saved_local_prefix;
+ local_prompt_len = saved_local_length;
+ prompt_prefix_length = saved_prefix_length;
+ prompt_last_invisible = saved_last_invisible;
+ prompt_visible_length = saved_visible_length;
+ prompt_invis_chars_first_line = saved_invis_chars_first_line;
+ prompt_physical_chars = saved_physical_chars;
+
+ /* can test saved_local_prompt to see if prompt info has been saved. */
+ saved_local_prompt = saved_local_prefix = (char *)0;
+ saved_local_length = 0;
+ saved_last_invisible = saved_visible_length = saved_prefix_length = 0;
+ saved_invis_chars_first_line = saved_physical_chars = 0;
+}
+
+char *
+_rl_make_prompt_for_search (pchar)
+ int pchar;
+{
+ int len;
+ char *pmt, *p;
+
+ rl_save_prompt ();
+
+ /* We've saved the prompt, and can do anything with the various prompt
+ strings we need before they're restored. We want the unexpanded
+ portion of the prompt string after any final newline. */
+ p = rl_prompt ? strrchr (rl_prompt, '\n') : 0;
+ if (p == 0)
+ {
+ len = (rl_prompt && *rl_prompt) ? strlen (rl_prompt) : 0;
+ pmt = (char *)xmalloc (len + 2);
+ if (len)
+ strcpy (pmt, rl_prompt);
+ pmt[len] = pchar;
+ pmt[len+1] = '\0';
+ }
+ else
+ {
+ p++;
+ len = strlen (p);
+ pmt = (char *)xmalloc (len + 2);
+ if (len)
+ strcpy (pmt, p);
+ pmt[len] = pchar;
+ pmt[len+1] = '\0';
+ }
+
+ /* will be overwritten by expand_prompt, called from rl_message */
+ prompt_physical_chars = saved_physical_chars + 1;
+ return pmt;
+}
+
+/* Quick redisplay hack when erasing characters at the end of the line. */
+void
+_rl_erase_at_end_of_line (l)
+ int l;
+{
+ register int i;
+
+ _rl_backspace (l);
+ for (i = 0; i < l; i++)
+ putc (' ', rl_outstream);
+ _rl_backspace (l);
+ for (i = 0; i < l; i++)
+ visible_line[--_rl_last_c_pos] = '\0';
+ rl_display_fixed++;
+}
+
+/* Clear to the end of the line. COUNT is the minimum
+ number of character spaces to clear, */
+void
+_rl_clear_to_eol (count)
+ int count;
+{
+#ifndef __MSDOS__
+ if (_rl_term_clreol)
+ tputs (_rl_term_clreol, 1, _rl_output_character_function);
+ else
+#endif
+ if (count)
+ space_to_eol (count);
+}
+
+/* Clear to the end of the line using spaces. COUNT is the minimum
+ number of character spaces to clear, */
+static void
+space_to_eol (count)
+ int count;
+{
+ register int i;
+
+ for (i = 0; i < count; i++)
+ putc (' ', rl_outstream);
+
+ _rl_last_c_pos += count;
+}
+
+void
+_rl_clear_screen ()
+{
+#ifndef __DJGPP__
+ if (_rl_term_clrpag)
+ tputs (_rl_term_clrpag, 1, _rl_output_character_function);
+ else
+ rl_crlf ();
+#else
+ ScreenClear ();
+ ScreenSetCursor (0, 0);
+#endif /* __DJGPP__ */
+}
+
+/* Insert COUNT characters from STRING to the output stream at column COL. */
+static void
+insert_some_chars (string, count, col)
+ char *string;
+ int count, col;
+{
+ open_some_spaces (col);
+ _rl_output_some_chars (string, count);
+}
+
+/* Insert COL spaces, keeping the cursor at the same position. We follow the
+ ncurses documentation and use either im/ei with explicit spaces, or IC/ic
+ by itself. We assume there will either be ei or we don't need to use it. */
+static void
+open_some_spaces (col)
+ int col;
+{
+#if !defined (__MSDOS__) && !defined (__MINGW32__)
+ char *buffer;
+ register int i;
+
+ /* If IC is defined, then we do not have to "enter" insert mode. */
+ if (_rl_term_IC)
+ {
+ buffer = tgoto (_rl_term_IC, 0, col);
+ tputs (buffer, 1, _rl_output_character_function);
+ }
+ else if (_rl_term_im && *_rl_term_im)
+ {
+ tputs (_rl_term_im, 1, _rl_output_character_function);
+ /* just output the desired number of spaces */
+ for (i = col; i--; )
+ _rl_output_character_function (' ');
+ /* If there is a string to turn off insert mode, use it now. */
+ if (_rl_term_ei && *_rl_term_ei)
+ tputs (_rl_term_ei, 1, _rl_output_character_function);
+ /* and move back the right number of spaces */
+ _rl_backspace (col);
+ }
+ else if (_rl_term_ic && *_rl_term_ic)
+ {
+ /* If there is a special command for inserting characters, then
+ use that first to open up the space. */
+ for (i = col; i--; )
+ tputs (_rl_term_ic, 1, _rl_output_character_function);
+ }
+#endif /* !__MSDOS__ && !__MINGW32__ */
+}
+
+/* Delete COUNT characters from the display line. */
+static void
+delete_chars (count)
+ int count;
+{
+ if (count > _rl_screenwidth) /* XXX */
+ return;
+
+#if !defined (__MSDOS__) && !defined (__MINGW32__)
+ if (_rl_term_DC && *_rl_term_DC)
+ {
+ char *buffer;
+ buffer = tgoto (_rl_term_DC, count, count);
+ tputs (buffer, count, _rl_output_character_function);
+ }
+ else
+ {
+ if (_rl_term_dc && *_rl_term_dc)
+ while (count--)
+ tputs (_rl_term_dc, 1, _rl_output_character_function);
+ }
+#endif /* !__MSDOS__ && !__MINGW32__ */
+}
+
+void
+_rl_update_final ()
+{
+ int full_lines;
+
+ full_lines = 0;
+ /* If the cursor is the only thing on an otherwise-blank last line,
+ compensate so we don't print an extra CRLF. */
+ if (_rl_vis_botlin && _rl_last_c_pos == 0 &&
+ visible_line[vis_lbreaks[_rl_vis_botlin]] == 0)
+ {
+ _rl_vis_botlin--;
+ full_lines = 1;
+ }
+ _rl_move_vert (_rl_vis_botlin);
+ /* If we've wrapped lines, remove the final xterm line-wrap flag. */
+ if (full_lines && _rl_term_autowrap && (VIS_LLEN(_rl_vis_botlin) == _rl_screenwidth))
+ {
+ char *last_line;
+
+ last_line = &visible_line[vis_lbreaks[_rl_vis_botlin]];
+ cpos_buffer_position = -1; /* don't know where we are in buffer */
+ _rl_move_cursor_relative (_rl_screenwidth - 1, last_line); /* XXX */
+ _rl_clear_to_eol (0);
+ putc (last_line[_rl_screenwidth - 1], rl_outstream);
+ }
+ _rl_vis_botlin = 0;
+ rl_crlf ();
+ fflush (rl_outstream);
+ rl_display_fixed++;
+}
+
+/* Move to the start of the current line. */
+static void
+cr ()
+{
+ if (_rl_term_cr)
+ {
+#if defined (__MSDOS__)
+ putc ('\r', rl_outstream);
+#else
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+#endif
+ _rl_last_c_pos = 0;
+ }
+}
+
+/* Redraw the last line of a multi-line prompt that may possibly contain
+ terminal escape sequences. Called with the cursor at column 0 of the
+ line to draw the prompt on. */
+static void
+redraw_prompt (t)
+ char *t;
+{
+ char *oldp;
+
+ oldp = rl_display_prompt;
+ rl_save_prompt ();
+
+ rl_display_prompt = t;
+ local_prompt = expand_prompt (t, &prompt_visible_length,
+ &prompt_last_invisible,
+ &prompt_invis_chars_first_line,
+ &prompt_physical_chars);
+ local_prompt_prefix = (char *)NULL;
+ local_prompt_len = local_prompt ? strlen (local_prompt) : 0;
+
+ rl_forced_update_display ();
+
+ rl_display_prompt = oldp;
+ rl_restore_prompt();
+}
+
+/* Redisplay the current line after a SIGWINCH is received. */
+void
+_rl_redisplay_after_sigwinch ()
+{
+ char *t;
+
+ /* Clear the last line (assuming that the screen size change will result in
+ either more or fewer characters on that line only) and put the cursor at
+ column 0. Make sure the right thing happens if we have wrapped to a new
+ screen line. */
+ if (_rl_term_cr)
+ {
+ _rl_move_vert (_rl_vis_botlin);
+
+#if defined (__MSDOS__)
+ putc ('\r', rl_outstream);
+#else
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+#endif
+ _rl_last_c_pos = 0;
+#if defined (__MSDOS__)
+ space_to_eol (_rl_screenwidth);
+ putc ('\r', rl_outstream);
+#else
+ if (_rl_term_clreol)
+ tputs (_rl_term_clreol, 1, _rl_output_character_function);
+ else
+ {
+ space_to_eol (_rl_screenwidth);
+ tputs (_rl_term_cr, 1, _rl_output_character_function);
+ }
+#endif
+ if (_rl_last_v_pos > 0)
+ _rl_move_vert (0);
+ }
+ else
+ rl_crlf ();
+
+ /* Redraw only the last line of a multi-line prompt. */
+ t = strrchr (rl_display_prompt, '\n');
+ if (t)
+ redraw_prompt (++t);
+ else
+ rl_forced_update_display ();
+}
+
+void
+_rl_clean_up_for_exit ()
+{
+ if (_rl_echoing_p)
+ {
+ _rl_move_vert (_rl_vis_botlin);
+ _rl_vis_botlin = 0;
+ fflush (rl_outstream);
+ rl_restart_output (1, 0);
+ }
+}
+
+void
+_rl_erase_entire_line ()
+{
+ cr ();
+ _rl_clear_to_eol (0);
+ cr ();
+ fflush (rl_outstream);
+}
+
+/* return the `current display line' of the cursor -- the number of lines to
+ move up to get to the first screen line of the current readline line. */
+int
+_rl_current_display_line ()
+{
+ int ret, nleft;
+
+ /* Find out whether or not there might be invisible characters in the
+ editing buffer. */
+ if (rl_display_prompt == rl_prompt)
+ nleft = _rl_last_c_pos - _rl_screenwidth - rl_visible_prompt_length;
+ else
+ nleft = _rl_last_c_pos - _rl_screenwidth;
+
+ if (nleft > 0)
+ ret = 1 + nleft / _rl_screenwidth;
+ else
+ ret = 0;
+
+ return ret;
+}
+
+#if defined (HANDLE_MULTIBYTE)
+/* Calculate the number of screen columns occupied by STR from START to END.
+ In the case of multibyte characters with stateful encoding, we have to
+ scan from the beginning of the string to take the state into account. */
+static int
+_rl_col_width (str, start, end, flags)
+ const char *str;
+ int start, end, flags;
+{
+ wchar_t wc;
+ mbstate_t ps;
+ int tmp, point, width, max;
+
+ if (end <= start)
+ return 0;
+ if (MB_CUR_MAX == 1 || rl_byte_oriented)
+ /* this can happen in some cases where it's inconvenient to check */
+ return (end - start);
+
+ memset (&ps, 0, sizeof (mbstate_t));
+
+ point = 0;
+ max = end;
+
+ /* Try to short-circuit common cases. The adjustment to remove wrap_offset
+ is done by the caller. */
+ /* 1. prompt string */
+ if (flags && start == 0 && end == local_prompt_len && memcmp (str, local_prompt, local_prompt_len) == 0)
+ return (prompt_physical_chars + wrap_offset);
+ /* 2. prompt string + line contents */
+ else if (flags && start == 0 && local_prompt_len > 0 && end > local_prompt_len && local_prompt && memcmp (str, local_prompt, local_prompt_len) == 0)
+ {
+ tmp = prompt_physical_chars + wrap_offset;
+ /* XXX - try to call ourselves recursively with non-prompt portion */
+ tmp += _rl_col_width (str, local_prompt_len, end, flags);
+ return (tmp);
+ }
+
+ while (point < start)
+ {
+ tmp = mbrlen (str + point, max, &ps);
+ if (MB_INVALIDCH ((size_t)tmp))
+ {
+ /* In this case, the bytes are invalid or too short to compose a
+ multibyte character, so we assume that the first byte represents
+ a single character. */
+ point++;
+ max--;
+
+ /* 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 (MB_NULLWCH (tmp))
+ break; /* Found '\0' */
+ else
+ {
+ point += tmp;
+ max -= tmp;
+ }
+ }
+
+ /* If START is not a byte that starts a character, then POINT will be
+ greater than START. In this case, assume that (POINT - START) gives
+ a byte count that is the number of columns of difference. */
+ width = point - start;
+
+ while (point < end)
+ {
+ tmp = mbrtowc (&wc, str + point, max, &ps);
+ if (MB_INVALIDCH ((size_t)tmp))
+ {
+ /* In this case, the bytes are invalid or too short to compose a
+ multibyte character, so we assume that the first byte represents
+ a single character. */
+ point++;
+ max--;
+
+ /* and assume that the byte occupies a single column. */
+ width++;
+
+ /* 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 (MB_NULLWCH (tmp))
+ break; /* Found '\0' */
+ else
+ {
+ point += tmp;
+ max -= tmp;
+ tmp = WCWIDTH(wc);
+ width += (tmp >= 0) ? tmp : 1;
+ }
+ }
+
+ width += point - end;
+
+ return width;
+}
+#endif /* HANDLE_MULTIBYTE */
--- /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
#endif
}
- /* EOF typed to a non-blank line is a <NL>. */
+ /* EOF typed to a non-blank line is a <NL>. If we want to change this,
+ to force any existing line to be ignored when read(2) reads EOF,
+ for example, this is the place to change. */
if (c == EOF && rl_end)
c = NEWLINE;
{
/* 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;
char *
sh_get_home_dir ()
{
- char *home_dir;
+ static char *home_dir = (char *)NULL;
struct passwd *entry;
+ if (home_dir)
+ return (home_dir);
+
home_dir = (char *)NULL;
#if defined (HAVE_GETPWUID)
# if defined (__TANDEM)
entry = getpwuid (getuid ());
# endif
if (entry)
- home_dir = entry->pw_dir;
+ home_dir = savestring (entry->pw_dir);
+#endif
+
+#if defined (HAVE_GETPWENT)
+ endpwent (); /* some systems need this */
#endif
+
return (home_dir);
}
return ((char *)getenv (varname));
}
+/* If we're not using $HOME, assume that the passwd file information won't
+ change while this shell instance is running. */
char *
get_home_dir ()
{
- char *home_dir;
+ static char *home_dir = (char *)NULL;
struct passwd *entry;
- home_dir = (char *)NULL;
+ if (home_dir)
+ return (home_dir);
+
+#if defined (HAVE_GETPWUID)
entry = getpwuid (getuid ());
if (entry)
- home_dir = entry->pw_dir;
+ home_dir = savestring (entry->pw_dir);
+#endif
+
+#if defined (HAVE_GETPWENT)
+ endpwent (); /* some systems need this */
+#endif
+
return (home_dir);
}
#if !defined (_QUIT_H_)
#define _QUIT_H_
+#include "sig.h" /* for sig_atomic_t */
+
/* Non-zero means SIGINT has already ocurred. */
-extern volatile int interrupt_state;
-extern volatile int terminating_signal;
+extern volatile sig_atomic_t interrupt_state;
+extern volatile sig_atomic_t terminating_signal;
/* Macro to call a great deal. SIGINT just sets the interrupt_state variable.
When it is safe, put QUIT in the code, and the "interrupt" will take
--- /dev/null
+/* quit.h -- How to handle SIGINT gracefully. */
+
+/* Copyright (C) 1993-2013 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/>.
+*/
+
+#if !defined (_QUIT_H_)
+#define _QUIT_H_
+
+/* Non-zero means SIGINT has already ocurred. */
+extern volatile sig_atomic_t interrupt_state;
+extern volatile sig_atomic_t terminating_signal;
+
+/* Macro to call a great deal. SIGINT just sets the interrupt_state variable.
+ When it is safe, put QUIT in the code, and the "interrupt" will take
+ place. The same scheme is used for terminating signals (e.g., SIGHUP)
+ and the terminating_signal variable. That calls a function which will
+ end up exiting the shell. */
+#define QUIT \
+ do { \
+ if (terminating_signal) termsig_handler (terminating_signal); \
+ if (interrupt_state) throw_to_top_level (); \
+ } while (0)
+
+#define CHECK_ALRM \
+ do { \
+ if (sigalrm_seen) \
+ longjmp (alrmbuf, 1); \
+ } while (0)
+
+#define SETINTERRUPT interrupt_state = 1
+#define CLRINTERRUPT interrupt_state = 0
+
+#define ADDINTERRUPT interrupt_state++
+#define DELINTERRUPT interrupt_state--
+
+/* The same sort of thing, this time just for signals that would ordinarily
+ cause the shell to terminate. */
+
+#define CHECK_TERMSIG \
+ do { \
+ if (terminating_signal) termsig_handler (terminating_signal); \
+ } while (0)
+
+#define LASTSIG() \
+ (terminating_signal ? terminating_signal : (interrupt_state ? SIGINT : 0))
+
+#define CHECK_WAIT_INTR \
+ do { \
+ if (wait_signal_received && this_shell_builtin && (this_shell_builtin == wait_builtin)) \
+ longjmp (wait_intr_buf, 1); \
+ } while (0)
+
+#define RESET_SIGTERM \
+ do { \
+ sigterm_received = 0; \
+ } while (0)
+
+#define CHECK_SIGTERM \
+ do { \
+ if (sigterm_received) termsig_handler (SIGTERM); \
+ } while (0)
+#endif /* _QUIT_H_ */
extern void initialize_siglist ();
/* Non-zero after SIGINT. */
-volatile int interrupt_state = 0;
+volatile sig_atomic_t interrupt_state = 0;
/* Non-zero after SIGWINCH */
-sig_atomic_t sigwinch_received = 0;
+volatile sig_atomic_t sigwinch_received = 0;
/* Non-zero after SIGTERM */
-sig_atomic_t sigterm_received = 0;
+volatile sig_atomic_t sigterm_received = 0;
/* Set to the value of any terminating signal received. */
-volatile int terminating_signal = 0;
+volatile sig_atomic_t terminating_signal = 0;
/* The environment at the top-level R-E loop. We use this in
the case of error return. */
an interactive shell is running in a terminal window that gets closed
with the `close' button. We can't test for RL_STATE_READCMD because
readline no longer handles SIGTERM synchronously. */
- if (interactive_shell && interactive && sig == SIGHUP && remember_on_history)
+ if (interactive_shell && interactive && (sig == SIGHUP || sig == SIGTERM) && remember_on_history)
maybe_save_shell_history ();
#endif /* HISTORY */
loop_level = continuing = breaking = funcnest = 0;
executing_list = comsub_ignore_return = return_catch_flag = 0;
- run_exit_trap ();
+ run_exit_trap (); /* XXX - run exit trap possibly in signal context? */
set_signal_handler (sig, SIG_DFL);
kill (getpid (), sig);
}
#endif /* !HAVE_POSIX_SIGNALS */
/* Extern variables */
-extern sig_atomic_t sigwinch_received;
-extern sig_atomic_t sigterm_received;
+extern volatile sig_atomic_t sigwinch_received;
+extern volatile sig_atomic_t sigterm_received;
-extern int interrupt_immediately;
+extern int interrupt_immediately; /* no longer used */
extern int terminate_immediately;
/* Functions from sig.c. */
last_command_exit_value = EXECUTION_FAILURE;
exp_jump_to_top_level ((result == &expand_word_error) ? DISCARD : FORCE_EOF);
/* NOTREACHED */
+ return (NULL);
}
else
return (result);
#define NROFF 0
+#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#endif
#include "bashansi.h"
+#include <stdio.h> /* puts */
extern char **environ;
-BUILD_DIR=/usr/local/build/chet/bash/bash-current
+BUILD_DIR=/usr/local/build/bash/bash-current
THIS_SH=$BUILD_DIR/bash
PATH=$PATH:$BUILD_DIR
--- /dev/null
+BUILD_DIR=/usr/local/build/chet/bash/bash-current
+THIS_SH=$BUILD_DIR/bash
+PATH=$PATH:$BUILD_DIR
+
+export THIS_SH PATH
+
+rm -f /tmp/xx
+
+/bin/sh "$@"
*) echo bad 4;;
esac
+# tests for the effect of quoting $* and $@ in an assignment context (plus
+# arrays) -- bugs through bash 4.2
+${THIS_SH} ./dollar-at-star1.sub
+
# tests for special expansion of "$*" and "${array[*]}" when used with other
# expansions -- bugs through bash-2.05b
${THIS_SH} ./dollar-star1.sub
--- /dev/null
+# from dan douglas
+expassign()
+{
+ typeset -a a
+ a=("$@")
+ typeset var asn
+
+ while IFS= read -r asn; do
+ IFS=: command eval "$asn"
+ printf '%-14s... %s\n' "$asn" "$var"
+ done <<\EOF
+var=${a[*]}
+var="${a[*]}"
+var=$*
+var="$*"
+var=${a[@]}
+var="${a[@]}"
+var=$@
+var="$@"
+EOF
+}
+
+expassign one:::two three:::four
ok 2
ok 3
ok 4
+var=${a[*]} ... one:::two:three:::four
+var="${a[*]}" ... one:::two:three:::four
+var=$* ... one:::two:three:::four
+var="$*" ... one:::two:three:::four
+var=${a[@]} ... one:::two three:::four
+var="${a[@]}" ... one:::two three:::four
+var=$@ ... one:::two three:::four
+var="$@" ... one:::two three:::four
xa|xb|xc
xa|xb|xc
a|b|c
after exec1.sub with args: 0
after exec1.sub without args: 0
-./execscript: line 20: notthere: command not found
+after exec1.sub: one two three
+./execscript: line 21: notthere: command not found
127
/tmp/bash: notthere: No such file or directory
127
/bin/sh: /bin/sh: cannot execute binary file
126
-./execscript: line 39: /: Is a directory
+./execscript: line 40: /: Is a directory
126
/: /: is a directory
126
-./execscript: line 46: .: /: is a directory
+./execscript: line 47: .: /: is a directory
1
126
0
this is bashenv
./exec3.sub: line 3: /tmp/bash-notthere: No such file or directory
127
-./execscript: line 70: notthere: No such file or directory
+./execscript: line 71: notthere: No such file or directory
127
-./execscript: line 73: notthere: No such file or directory
+./execscript: line 74: notthere: No such file or directory
127
-./execscript: line 76: notthere: command not found
+./execscript: line 77: notthere: command not found
127
this is sh
this is sh
echo after exec1.sub with args: $?
./exec1.sub
echo after exec1.sub without args: $?
+echo after exec1.sub: "$@"
# set up a fixed path so we know notthere will not be found
PATH=/usr/bin:/bin:/usr/local/bin:
--- /dev/null
+export LC_ALL=C
+export LANG=C
+
+if [ $UID -eq 0 ]; then
+ echo "execscript: the test suite should not be run as root" >&2
+fi
+
+set -- one two three
+echo before exec1.sub: "$@"
+echo calling exec1.sub
+./exec1.sub aa bb cc dd ee
+echo after exec1.sub with args: $?
+./exec1.sub
+echo after exec1.sub without args: $?
+
+# set up a fixed path so we know notthere will not be found
+PATH=/usr/bin:/bin:/usr/local/bin:
+export PATH
+
+notthere
+echo $?
+
+# this is iffy, since the error messages may vary from system to system
+# and /tmp might not exist
+ln -s ${THIS_SH} /tmp/bash 2>/dev/null
+if [ -f /tmp/bash ]; then
+ /tmp/bash notthere
+else
+ ${THIS_SH} notthere
+fi
+echo $?
+rm -f /tmp/bash
+
+# /bin/sh should be there on all systems
+${THIS_SH} /bin/sh
+echo $?
+
+# try executing a directory
+/
+echo $?
+
+${THIS_SH} /
+echo $?
+
+# try sourcing a directory
+. /
+echo $?
+
+# try sourcing a binary file -- post-2.04 versions don't do the binary file
+# check, and will probably fail with `command not found', or status 127
+# bash-4.1 and later check for 256 NUL characters and fail as binary files
+# if there are more than that, it's probably binary
+. ${THIS_SH} 2>/dev/null
+echo $?
+
+# post-bash-2.05 versions allow sourcing non-regular files
+. /dev/null
+echo $?
+
+# kill two birds with one test -- test out the BASH_ENV code
+echo echo this is bashenv > /tmp/bashenv
+export BASH_ENV=/tmp/bashenv
+${THIS_SH} ./exec3.sub
+rm -f /tmp/bashenv
+unset BASH_ENV
+
+# we're resetting the $PATH to empty, so this should be last
+PATH=
+
+notthere
+echo $?
+
+command notthere
+echo $?
+
+command -p notthere
+echo $?
+
+# but -p should guarantee that we find all the standard utilities, even
+# with an empty or unset $PATH
+command -p sh -c 'echo this is $0'
+unset PATH
+command -p sh -c 'echo this is $0'
+
+# a bug in bash before bash-2.01 caused PATH to be set to the empty string
+# when command -p was run with PATH unset
+echo ${PATH-unset}
+
+echo "echo ok" | ${THIS_SH} -t
+
+${THIS_SH} ./exec2.sub
+echo $?
+
+${THIS_SH} ./exec4.sub
+
+# try exec'ing a command that cannot be found in $PATH
+${THIS_SH} ./exec5.sub
+
+# this was a bug in bash versions before bash-2.04
+${THIS_SH} -c 'cat </dev/null | cat >/dev/null' >&-
+
+# checks for proper return values in subshell commands with inverted return
+# values
+
+${THIS_SH} ./exec6.sub
+
+# checks for properly deciding what constitutes an executable file
+${THIS_SH} ./exec7.sub
+
+${THIS_SH} -i ./exec8.sub
+
+${THIS_SH} ./exec9.sub
+
+true | `echo true` &
+
+echo after
+
+# Problem with bash at least back to version 3.0
+${THIS_SH} -c 'VAR=0; VAR=1 command exec; exit ${VAR}'
+
+# problem with bash through bash-4.1
+(
+ exec /var/empty/nosuch
+ echo bad
+) 2>/dev/null
+[ $? = 127 ] || echo FAIL: bad exit status $? at $LINENO
--- /dev/null
+:; ./shx
+
+sh:
+<&$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
projects / thirdparty / bash.git / commitdiff
