From: Chet Ramey Date: Fri, 9 Dec 2011 01:31:08 +0000 (-0500) Subject: bash-4.1 more stray file cleanup X-Git-Tag: bash-4.3-alpha~190 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5171e6eb24cfcb53ed118856ecae634db93def26;p=thirdparty%2Fbash.git bash-4.1 more stray file cleanup --- diff --git a/#pathexp.c# b/#pathexp.c# deleted file mode 100644 index 7ce7350f1..000000000 --- a/#pathexp.c# +++ /dev/null @@ -1,486 +0,0 @@ -/* pathexp.c -- The shell interface to the globbing library. */ - -/* Copyright (C) 1995-2009 Free Software Foundation, Inc. - - This file is part of GNU Bash, the Bourne Again SHell. - - Bash is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - Bash is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with Bash. If not, see . -*/ - -#include "config.h" - -#include "bashtypes.h" -#include - -#if defined (HAVE_UNISTD_H) -# include -#endif - -#include "bashansi.h" - -#include "shell.h" -#include "pathexp.h" -#include "flags.h" - -#include "shmbutil.h" -#include "bashintl.h" - -#include - -static int glob_name_is_acceptable __P((const char *)); -static void ignore_globbed_names __P((char **, sh_ignore_func_t *)); - -#if defined (USE_POSIX_GLOB_LIBRARY) -# include -typedef int posix_glob_errfunc_t __P((const char *, int)); -#else -# include -#endif - -/* Control whether * matches .files in globbing. */ -int glob_dot_filenames; - -/* Control whether the extended globbing features are enabled. */ -int extended_glob = EXTzg; - -/* Control enabling special handling of `**' */ -int glob_star = 0; - -/* Return nonzero if STRING has any unquoted special globbing chars in it. */ -int -unquoted_glob_pattern_p (string) - register char *string; -{ - register int c; - char *send; - int open; - - DECLARE_MBSTATE; - - open = 0; - send = string + strlen (string); - - while (c = *string++) - { - switch (c) - { - case '?': - case '*': - return (1); - - case '[': - open++; - continue; - - case ']': - if (open) - return (1); - continue; - - case '+': - case '@': - case '!': - if (*string == '(') /*)*/ - return (1); - continue; - - case CTLESC: - case '\\': - if (*string++ == '\0') - return (0); - } - - /* Advance one fewer byte than an entire multibyte character to - account for the auto-increment in the loop above. */ -#ifdef HANDLE_MULTIBYTE - string--; - ADVANCE_CHAR_P (string, send - string); - string++; -#else - ADVANCE_CHAR_P (string, send - string); -#endif - } - return (0); -} - -/* Return 1 if C is a character that is `special' in a POSIX ERE and needs to - be quoted to match itself. */ -static inline int -ere_char (c) - int c; -{ - switch (c) - { - case '.': - case '[': - case '\\': - case '(': - case ')': - case '*': - case '+': - case '?': - case '{': - case '|': - case '^': - case '$': - return 1; - default: - return 0; - } - return (0); -} - -int -glob_char_p (s) - const char *s; -{ - switch (*s) - { - case '*': - case '[': - case ']': - case '?': - case '\\': - return 1; - case '+': - case '@': - case '!': - if (s[1] == '(') /*(*/ - return 1; - break; - } - return 0; -} - -/* PATHNAME can contain characters prefixed by CTLESC; this indicates - that the character is to be quoted. We quote it here in the style - that the glob library recognizes. If flags includes QGLOB_CVTNULL, - we change quoted null strings (pathname[0] == CTLNUL) into empty - strings (pathname[0] == 0). If this is called after quote removal - is performed, (flags & QGLOB_CVTNULL) should be 0; if called when quote - removal has not been done (for example, before attempting to match a - pattern while executing a case statement), flags should include - QGLOB_CVTNULL. If flags includes QGLOB_FILENAME, appropriate quoting - to match a filename should be performed. */ -char * -quote_string_for_globbing (pathname, qflags) - const char *pathname; - int qflags; -{ - char *temp; - register int i, j; - - temp = (char *)xmalloc (strlen (pathname) + 1); - - if ((qflags & QGLOB_CVTNULL) && QUOTED_NULL (pathname)) - { - temp[0] = '\0'; - return temp; - } - - for (i = j = 0; pathname[i]; i++) - { - if (pathname[i] == CTLESC) - { - if ((qflags & QGLOB_FILENAME) && pathname[i+1] == '/') - continue; - if ((qflags & QGLOB_REGEXP) && ere_char (pathname[i+1]) == 0) - continue; - temp[j++] = '\\'; - i++; - if (pathname[i] == '\0') - break; - } - else if (pathname[i] == '\\') - { - temp[j++] = '\\'; - i++; - if (pathname[i] == '\0') - break; - } - temp[j++] = pathname[i]; - } - temp[j] = '\0'; - - return (temp); -} - -char * -quote_globbing_chars (string) - char *string; -{ - size_t slen; - char *temp, *s, *t, *send; - DECLARE_MBSTATE; - - slen = strlen (string); - send = string + slen; - - temp = (char *)xmalloc (slen * 2 + 1); - for (t = temp, s = string; *s; ) - { - if (glob_char_p (s)) - *t++ = '\\'; - - /* Copy a single (possibly multibyte) character from s to t, - incrementing both. */ - COPY_CHAR_P (t, s, send); - } - *t = '\0'; - return temp; -} - -/* Call the glob library to do globbing on PATHNAME. */ -char ** -shell_glob_filename (pathname) - const char *pathname; -{ -#if defined (USE_POSIX_GLOB_LIBRARY) - register int i; - char *temp, **results; - glob_t filenames; - int glob_flags; - - temp = quote_string_for_globbing (pathname, QGLOB_FILENAME); - - filenames.gl_offs = 0; - -# if defined (GLOB_PERIOD) - glob_flags = glob_dot_filenames ? GLOB_PERIOD : 0; -# else - glob_flags = 0; -# endif /* !GLOB_PERIOD */ - - glob_flags |= (GLOB_ERR | GLOB_DOOFFS); - - i = glob (temp, glob_flags, (posix_glob_errfunc_t *)NULL, &filenames); - - free (temp); - - if (i == GLOB_NOSPACE || i == GLOB_ABORTED) - return ((char **)NULL); - else if (i == GLOB_NOMATCH) - filenames.gl_pathv = (char **)NULL; - else if (i != 0) /* other error codes not in POSIX.2 */ - filenames.gl_pathv = (char **)NULL; - - results = filenames.gl_pathv; - - if (results && ((GLOB_FAILED (results)) == 0)) - { - if (should_ignore_glob_matches ()) - ignore_glob_matches (results); - if (results && results[0]) - strvec_sort (results); - else - { - FREE (results); - results = (char **)NULL; - } - } - - return (results); - -#else /* !USE_POSIX_GLOB_LIBRARY */ - - char *temp, **results; - - noglob_dot_filenames = glob_dot_filenames == 0; - - temp = quote_string_for_globbing (pathname, QGLOB_FILENAME); - results = glob_filename (temp, glob_star ? GX_GLOBSTAR : 0); - free (temp); - - if (results && ((GLOB_FAILED (results)) == 0)) - { - if (should_ignore_glob_matches ()) - ignore_glob_matches (results); - if (results && results[0]) - strvec_sort (results); - else - { - FREE (results); - results = (char **)&glob_error_return; - } - } - - return (results); -#endif /* !USE_POSIX_GLOB_LIBRARY */ -} - -/* Stuff for GLOBIGNORE. */ - -static struct ignorevar globignore = -{ - "GLOBIGNORE", - (struct ign *)0, - 0, - (char *)0, - (sh_iv_item_func_t *)0, -}; - -/* Set up to ignore some glob matches because the value of GLOBIGNORE - has changed. If GLOBIGNORE is being unset, we also need to disable - the globbing of filenames beginning with a `.'. */ -void -setup_glob_ignore (name) - char *name; -{ - char *v; - - v = get_string_value (name); - setup_ignore_patterns (&globignore); - - if (globignore.num_ignores) - glob_dot_filenames = 1; - else if (v == 0) - glob_dot_filenames = 0; -} - -int -should_ignore_glob_matches () -{ - return globignore.num_ignores; -} - -/* Return 0 if NAME matches a pattern in the globignore.ignores list. */ -static int -glob_name_is_acceptable (name) - const char *name; -{ - struct ign *p; - int flags; - - /* . and .. are never matched */ - if (name[0] == '.' && (name[1] == '\0' || (name[1] == '.' && name[2] == '\0'))) - return (0); - - flags = FNM_PATHNAME | FNMATCH_EXTFLAG; - for (p = globignore.ignores; p->val; p++) - { - if (strmatch (p->val, (char *)name, flags) != FNM_NOMATCH) - return (0); - } - return (1); -} - -/* Internal function to test whether filenames in NAMES should be - ignored. NAME_FUNC is a pointer to a function to call with each - name. It returns non-zero if the name is acceptable to the particular - ignore function which called _ignore_names; zero if the name should - be removed from NAMES. */ - -static void -ignore_globbed_names (names, name_func) - char **names; - sh_ignore_func_t *name_func; -{ - char **newnames; - int n, i; - - for (i = 0; names[i]; i++) - ; - newnames = strvec_create (i + 1); - - for (n = i = 0; names[i]; i++) - { - if ((*name_func) (names[i])) - newnames[n++] = names[i]; - else - free (names[i]); - } - - newnames[n] = (char *)NULL; - - if (n == 0) - { - names[0] = (char *)NULL; - free (newnames); - return; - } - - /* Copy the acceptable names from NEWNAMES back to NAMES and set the - new array end. */ - for (n = 0; newnames[n]; n++) - names[n] = newnames[n]; - names[n] = (char *)NULL; - free (newnames); -} - -void -ignore_glob_matches (names) - char **names; -{ - if (globignore.num_ignores == 0) - return; - - ignore_globbed_names (names, glob_name_is_acceptable); -} - -void -setup_ignore_patterns (ivp) - struct ignorevar *ivp; -{ - int numitems, maxitems, ptr; - char *colon_bit, *this_ignoreval; - struct ign *p; - - this_ignoreval = get_string_value (ivp->varname); - - /* If nothing has changed then just exit now. */ - if ((this_ignoreval && ivp->last_ignoreval && STREQ (this_ignoreval, ivp->last_ignoreval)) || - (!this_ignoreval && !ivp->last_ignoreval)) - return; - - /* Oops. The ignore variable has changed. Re-parse it. */ - ivp->num_ignores = 0; - - if (ivp->ignores) - { - for (p = ivp->ignores; p->val; p++) - free(p->val); - free (ivp->ignores); - ivp->ignores = (struct ign *)NULL; - } - - if (ivp->last_ignoreval) - { - free (ivp->last_ignoreval); - ivp->last_ignoreval = (char *)NULL; - } - - if (this_ignoreval == 0 || *this_ignoreval == '\0') - return; - - ivp->last_ignoreval = savestring (this_ignoreval); - - numitems = maxitems = ptr = 0; - - while (colon_bit = extract_colon_unit (this_ignoreval, &ptr)) - { - if (numitems + 1 >= maxitems) - { - maxitems += 10; - ivp->ignores = (struct ign *)xrealloc (ivp->ignores, maxitems * sizeof (struct ign)); - } - ivp->ignores[numitems].val = colon_bit; - ivp->ignores[numitems].len = strlen (colon_bit); - ivp->ignores[numitems].flags = 0; - if (ivp->item_func) - (*ivp->item_func) (&ivp->ignores[numitems]); - numitems++; - } - ivp->ignores[numitems].val = (char *)NULL; - ivp->num_ignores = numitems; -} diff --git a/CHANGES.autosave b/CHANGES.autosave deleted file mode 100644 index 16824eea9..000000000 --- a/CHANGES.autosave +++ /dev/null @@ -1,6440 +0,0 @@ -This document details the changes between this version, bash-4.1-alpha, -and the previous version, bash-4.0-release. - -1. Changes to Bash - -a. Fixed bugs in the parser involving new parsing of the commands contained - in command substitution when the substitution is read. - -b. Fixed a bug that caused the shell to dump core when performing programmable - completion using a shell function. - -c. Fixed a bug in `mapfile' that caused it to invoke callbacks at the wrong - time. - -d. Fixed a bug that caused the shell to dump core when listing jobs in the - `exit' builtin. - -e. Fixed several bugs encountered when reading subscripts in associative - array assignments and expansions. - -f. Fixed a bug that under some circumstances caused an associative array to - be converted to an indexed array. - -g. Fixed a bug that caused syntax errors and SIGINT interrupts to not set - $? to a value > 128. - -h. Fixed a bug that caused the shell to remove FIFOs associated with process - substitution inside shell functions. - -i. Fixed a bug that caused terminal attributes to not be reset when the - `read' builtin timed out. - -j. Fixed a bug in brace expansion that caused unwanted zero padding of the - expanded terms. - -k. Fixed a bug that prevented the |& construct from working as intended when - used with a simple command with additional redirections. - -l. Fixed a bug with the case statment ;& terminator that caused the shell to - dereference a NULL pointer. - -m. Fixed a bug that caused assignment statements or redirections preceding - a simple command name to inhibit alias expansion. - -n. Fixed the behavior of `set -u' to conform to the latest Posix interpretation: - every expansion of an unset variable except $@ and $* will cause the - shell to exit. - -o. Fixed a bug that caused double-quoted expansions of $* inside word - expansions like ${x#$*} to not expand properly when $IFS is empty. - -p. Fixed a bug that caused traps to set $LINENO to the wrong value when they - execute. - -q. Fixed a bug that caused off-by-one errors when computing history lines in - the `fc' builtin. - -r. Fixed a bug that caused some terminating signals to not exit the shell - quickly enough, forcing the kernel to send the signal (e.g., SIGSEGV) - multiple times. - -s. Fixed a bug that caused the shell to attempt to add empty lines to the - history list when reading here documents. - -t. Made some internal changes that dramatically speeds up sequential indexed - array access. - -u. Fixed a bug that caused the shell to write past the end of a string when - completing a double-quoted string ending in a backslash. - -v. Fixed a bug that caused the shell to replace too many characters when a - pattern match was null in a ${foo//bar} expansion. - -w. Fixed bugs in the expansion of ** that caused duplicate directory names - and the contents of the current directory to be omitted. - -x. Fixed a bug that caused $? to not be set correctly when referencing an - unset variable with set -u and set -e enabled. - -y. Fixed a bug caused by executing an external program from the DEBUG trap - while a pipeline was running. The effect was to disturb the pipeline - state, occasionally causing it to hang. - -z. Fixed a bug that caused the ** glob expansion to dump core if it - encountered an unsearchable directory. - -aa. Fixed a bug that caused `command -v' and `command -V' to not honor the - path set by the -p option. - -bb. Fixed a bug that caused brace expansion to take place too soon in some - compound array assignments. - -cc. Fixed a bug that caused programmable completion functions' changes to - READLINE_POINT to not be reflected back to readline. - -dd. Fixed a bug that caused the shell to dump core if a trap was executed - during a shell assignment statement. - -ee. Fixed an off-by-one error when computing the number of positional - parameters for the ${@:0:n} expansion. - -ff. Fixed a problem with setting COMP_CWORD for programmable completion - functions that could leave it set to -1. - -gg. Fixed a bug that caused the ERR trap to be triggered in some cases where - `set -e' would not have caused the shell to exit. - -hh. Fixed a bug that caused changes made by `compopt' to not persist past the - completion function in which compopt was executed. - -ii. Fixed a bug that caused the list of hostname completions to not be cleared - when HOSTNAME was unset. - -jj. Fixed a bug that caused variable expansion in here documents to look in - any temporary environment. - -kk. Bash and readline can now convert file names between precomposed and - decomposed Unicode on Mac OS X ("keyboard" and file system forms, - respectively). This affects filename completion and globbing. - -2. Changes to Readline - -a. The SIGWINCH signal handler now avoids calling the redisplay code if - one arrives while in the middle of redisplay. - -b. Changes to the timeout code to make sure that timeout values greater - than one second are handled better. - -c. Fixed a bug in the redisplay code that was triggered by a prompt - containing invisible characters exactly the width of the screen. - -d. Fixed a bug in the redisplay code encountered when running in horizontal - scroll mode. - -e. Fixed a bug that prevented menu completion from properly completing - filenames. - -f. Fixed a redisplay bug caused by a multibyte character causing a line to - wrap. - -g. Fixed a bug that caused key sequences of two characters to not be - recognized when a longer sequence identical in the first two characters - was bound. - -3. New Features in Bash - -a. Here-documents within $(...) command substitutions may once more be - delimited by the closing right paren, instead of requiring a newline. - -b. Bash's file status checks (executable, readable, etc.) now take file - system ACLs into account on file systems that support them. - -c. Bash now passes environment variables with names that are not valid - shell variable names through into the environment passed to child - processes. - -d. The `execute-unix-command' readline function now attempts to clear and - reuse the current line rather than move to a new one after the command - executes. - -e. `printf -v' can now assign values to array indices. - -f. New `complete -E' and `compopt -E' options that work on the "empty" - completion: completion attempted on an empty command line. - -g. New complete/compgen/compopt -D option to define a `default' completion: - a completion to be invoked on command for which no completion has been - defined. If this function returns 124, programmable completion is - attempted again, allowing a user to dynamically build a set of completions - as completion is attempted by having the default completion function - install individual completion functions each time it is invoked. - -h. When displaying associative arrays, subscripts are now quoted. - -i. Changes to dabbrev-expand to make it more `emacs-like': no space appended - after matches, completions are not sorted, and most recent history entries - are presented first. - -j. The [[ and (( commands are now subject to the setting of `set -e' and the - ERR trap. - -k. The source/. builtin now removes NUL bytes from the file before attempting - to parse commands. - -l. There is a new configuration option (in config-top.h) that forces bash to - forward all history entries to syslog. - -m. A new variable $BASHOPTS to export shell options settable using `shopt' to - child processes. - -n. Users may now set a configure-time option to force extglob to be on by - default. - -o. A new variable $BASH_XTRACEFD, set to an integer file descriptor where - the shell displays xtrace output. - -4. New Features in Readline - -a. New bindable function: menu-complete-backward. - -b. In the vi insertion keymap, C-n is now bound to menu-complete by default, - and C-p to menu-complete-backward. - -c. When in vi command mode, repeatedly hitting ESC now does nothing, even - when ESC introduces a bound key sequence. This is closer to how - historical vi behaves. - -d. New bindable function: skip-csi-sequence. Can be used as a default to - consume key sequences generated by keys like Home and End without having - to bind all keys. - -e. New application-settable function: rl_filename_rewrite_hook. Can be used - to rewite or modify filenames read from the file system before they are - compared to the word to be complet ------------------------------------------------------------------------------- -This document details the changes between this version, bash-4.0-release, -and the previous version, bash-4.0-rc1. - -1. Changes to Bash - -a. Changed the message printed when setlocale(3) fails to only include the - strerror error text if the call changes errno. - -b. Changed trap command execution to reset the line number before running a - trap (except DEBUG and RETURN traps). - -c. Fixed behavior of case-modifiying word expansions to not work on - individual words within a variable's value. - -d. Fixed a bug that caused mapfile to not be interruptible when run in an - interactive shell. - -e. Fixed a bug that caused mapfile to not run callbacks for the first line - read. - -f. Fixed a bug that caused mapfile to not honor EOF typed in an interactive - shell. - -g. Fixed the coprocess reaping code to not run straight from a signal handler. - -h. Fixed a bug that caused printf -b to ignore the first % conversion specifier - in the format string on 64-bit systems. - -i. Fixed a bug that caused incorrect word splitting when `:', `=', or `~' - appeared in $IFS. - -j. Fixed a bug that caused data corruption in the programmable completion code - when a shell function called from a completion aborted execution. - -k. Fixed a bug that caused the CPU usage reported by the `time' builtin to be - capped at 100%. - -l. Changed behavior of shell when -e option is in effect to reflect consensus - of Posix shell standardization working group. - -m. Fixed a bug introduced in bash-4.0-alpha that caused redirections to not - be displayed by `type' or `declare' when appearing in functions under - certain circumstances. - -2. Changes to Readline - -a. Fixed a bug that caused !(...) extended glob patterns to inhibit later - history expansion. - -b. Reworked the signal handling to avoid calling disallowed functions from a - signal handler. - -3. New Features in Bash - -a. `readarray' is now a synonym for `mapfile'. ------------------------------------------------------------------------------- -This document details the changes between this version, bash-4.0-rc1, -and the previous version, bash-4.0-beta2. - -1. Changes to Bash - -a. Fixed a bug that caused parsing errors when a $()-style command - substitution was follwed immediately by a quoted newline. - -b. Fixed a bug that caused extended shell globbing patterns beginning with - `*(' to not work when used with pattern substitution word expansions. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-4.0-beta2, -and the previous version, bash-4.0-beta. - -1. Changes to Bash - -a. Fixed a bug that caused failed word expansions to set $? but not - PIPESTATUS. - -b. Changed filename completion to quote the tilde in a filename with a - leading tilde that exists in the current directory. - -c. Fixed a bug that caused a file descriptor leak when performing - redirections attached to a compound command. - -d. Fixed a bug that caused expansions of $@ and $* to not exit the shell if - the -u option was enabled and there were no posititional parameters. - -e. Fixed a bug that resulted in bash not terminating immediately if a - terminating signal was received while performing output. - -f. Fixed a bug that caused the shell to crash after creating 256 process - substitutions during word completion. - -2. Changes to Readline - -a. Fixed a bug that caused redisplay errors when using prompts with invisible - characters and numeric arguments to a command in a multibyte locale. - -b. Fixed a bug that caused redisplay errors when using prompts with invisible - characters spanning more than two physical screen lines. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-4.0-beta, -and the previous version, bash-4.0-alpha. - -1. Changes to Bash - -a. Fixed a typo that caused a variable to be used before initialization - while parsing Posix-style command substitutions. - -b. Fixed a bug that caused stray ^? when the expansion of a parameter used - as part of a pattern removal expansion is empty, but part of a non- - empty string. - -c. Fixed a bug that could cause strings not converted to numbers by strtol - to be treated as if the conversion had been successful. - -d. The `return' builtin now accepts no options and requires a `--' before - a negative return value, as Posix requires. - -e. Fixed a bug that caused local variables to be created with the empty - string for a value rather than no value. - -f. Changed behavior so the shell now acts as if it received an interrupt - when a pipeline is killed by SIGINT while executing a list. - -g. Fixed a bug that caused `declare var' and `typeset var' to initialize - `var' to the empty string. - -h. Changed `bind' builtin to print a warning but proceed if invoked when - line editing is not active. - -i. Fixed a bug that caused the shell to exit when the `errexit' option is - set and a command in a pipeline returns a non-zero exit status. - -j. Fixed a bug that caused the shell to not run the exit trap in a command - run with `bash -c' under some circumstances. - -k. Fixed a bug that caused parser errors to occasionally not set $? when - running commands with `eval'. - -l. Fixed a bug that caused stray control characters when evaluating compound - array assignments containing $'\x7f' escapes. - -m. Fixed a bug that caused redirections involving file descriptor 10 as the - target to behave incorrectly. - -n. Fixed a bug that could cause memory to be freed multiple times when - assigning to COMP_WORDBREAKS. - -o. Fixed a bug that could cause NULL pointer dereferences when COMP_WORDBREAKS - was unset. - -2. Changes to Readline - -3. New Features in Bash - -a. A value of 0 for the -t option to `read' now returns success if there is - input available to be read from the specified file descriptor. - -b. CDPATH and GLOBIGNORE are ignored when the shell is running in privileged - mode. - -c. New bindable readline functions shell-forward-word and shell-backward-word, - which move forward and backward words delimited by shell metacharacters - and honor shell quoting. - -d. New bindable readline functions shell-backward-kill-word and shell-kill-word - which kill words backward and forward, but use the same word boundaries - as shell-forward-word and shell-backward-word. - -4. New Features in Readline - -a. If the kernel supports it, readline displays special characters - corresponding to a keyboard-generated signal when the signal is received. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-4.0-alpha, -and the previous version, bash-3.2-release. - -1. Changes to Bash - -a. Fixed several bugs in old-style `` command substitution parsing, including - comment parsing and quoted string handling. - -b. Fixed problems parsing arguments to the [[ command's =~ regular expression - matching operator: metacharacter and whitespace parsing. - -c. Fixed a bug that caused the shell to inappropriately reuse high-numbered - file descriptors it used internally. - -d. Fixed a bug in pattern replacement word expansions that caused a `/' as - the first character of an expanded pattern to be mistaken for a global - replacement specifier. - -e. Fixed several problems with the asprintf and snprintf replacement functions - that caused hangs and crashes. - -f. Fixed a bug in the calculation of the current and previous job that caused - it to refer to incorrect jobs. - -g. Fixed a bug in the check for the validity of a hashed command pathname that - caused unnecessary hash table deletions and additions. - -h. Fixed a bug that caused child processes to inherit the wrong value for $!. - -i. Fixed a bug that caused `.' to fail to read and execute commands from non- - regular files such as devices or named pipes. - -j. Fixed a bug in printf formatting for the %x and %X expansions that occurred - on some systems. - -k. Fixed a bug that caused the shell to crash when creating temporary files if - $TMPDIR named a non-writable directory. - -l. Fixed a bug that caused the shell to ignore $TMPDIR when creating temporary - files under some circumstances. - -m. Fixed a bug that caused named pipes created by process substitution to not - be cleaned up. - -n. Fixed a bug that caused HISTTIMEFORMAT to not be honored when it appeared - in the initial shell environment. - -o. Fixed several bugs in the expansion of $* and $@ (quoted and unquoted) - when IFS is null or contains non-whitespace characters; the same changes - apply to arrays subscripted with * or @. - -p. Fixed several problems with pattern substitution expansions on the - positional parameters and arrays subscripted with * or @ that occurred - when $IFS was set to the empty string. - -q. Made a change to the default locale initialization code that should - result in better behavior from the locale-aware library functions. - -r. Fixed a bug that caused compacting the jobs list to drop jobs. - -s. Fixed a bug that caused jumps back to the top-level processing loop from - a builtin command to leave the shell in an inconsistent state. - -t. Fixed a bug that caused characters that would be escaped internally to be - doubled when escaped with a backslash. - -u. Fixed the initialization of mailboxes to not cause maildirs to be read - (and stat(2) called for every message file) at shell startup. - -v. Fixed a bug that caused the shell to not display $PS2 when the read builtin - reads a line continued with a backslash. - -w. Fixed a bug that caused errors in word splitting when $IFS contained - characters used for internal quoting. - -x. Fixed bugs that caused problems with output from shell builtins not being - completely displayed on some systems. - -y. Fixed a bug that caused output to be lost when a redirection is acting on - the shell's output file descriptor. - -z. Fixed bugs caused by shell builtins not checking for all write errors. - -aa. Fixed a problem that caused the shell to dump core if expansions on the - pattern passed to the pattern removal word expansions resulted in expansion - errors. - -bb. Fixed a bug that caused bash to loop infinitely after creating and - waiting for 4096 jobs. - -cc. Fixed a bug that caused bash to lose the status of a background job under - certain circumstances. - -dd. Fixed a bug that caused bash to not look in the temporary environment - when performing variable lookup under certain circumstances. - -ee. Fixed a bug that caused bash to close file descriptors greater than 10 - when they were used in redirections. - -ff. Fixed a problem that caused the shell to attempt to read from the standard - input when called as `bash -i script'. - -gg. Fixed a memory leak and variable initialization problems when the -v option - was supplied to `printf' that could cause incorrect results. - -hh. Fixed a bug that caused the `read' builtin to count bytes when the -n option - was supplied, rather than (possibly multibyte) characters. - -ii. Fixed a bug when displaying a function due to not converting the function - to an external form. - -jj. Changed job control initialization to ensure that the shell has a tty - as its controlling terminal before enabling job control. - -kk. Fixed a bug with the `test' builtin that caused it to misinterpret - arguments beginning with `-' but containing more than one character. - -ll. Fixed bug that could cause the shell to dump core in certain cases where - a command sets the SIGINT disposition to the default. - -mm. Fixed a bug in the pattern replacement (affecting both word expansion - and the `fc' builtin) that occurred when the pattern and replacement - strings were empty. - -nn. Fixed a bug that caused an arithmetic evaluation error to disable all - further evaluation. - -oo. Fixed a bug in pathname expansion that caused it to interpret backslashes - in the pathname as quoting characters. - -pp. Fixed a bug in the replacement getcwd() implementation that could cause - memory to be overwritten. - -qq. When in Posix mode, the `ulimit' builtin now uses a block size of 512 for - the `-c' and `-f' options. - -rr. Brace expansion now allows process substitutions to pass through unchanged. - -ss. Fixed a problem in the command name completion code to avoid quoting - escaped special characters twice when the command name begins with a tilde. - -tt. Fixed a problem in the printf builtin that resulted in single-byte - output for the "'" escape, even when using multibyte characters. - -uu. Fixed a bug that caused the failure exit status to be lost when redirections - attached to a compound command failed. - -vv. Fixed a bug that caused the internal random number generator to not be - re-seeded correctly when creating a subshell. - -ww. Fixed a bug that could cause the bash replacement getcwd to overwrite - memory. - -xx. Fixed a bug that caused the shell to not receive SIGINT if it was sent - while the shell was waiting for a command substitution to terminate, and - make sure the exit status is correct when it does. - -yy. Fixed a bug that resulted in the second and subsequent children spawned - by a shell begun to run a command substitution being placed into the - wrong process group. - -zz. Fixed a bug that caused the results of successful tilde expansion to be - subject to pathname expansion and word splitting. - -aaa. Fixed a bug that could cause the shell to hang if it encountered an - error that caused it to jump back to the top processing loop during a - command substitution or `eval' command. - -bbb. Fixed a bug that caused the `read' builtin to use the tty's attributes - instead of those of the file descriptor passed with the -u option when - processing the -n and -d options. - -ccc. Fixed a bug that caused incorrect expansion of ${array[@]:foo} if the - first character of $IFS was not whitespace. - -ddd. Fixed a bug that occurred when scanning for the ending delimiter of a - ${parameter/pat/sub} expansion. - -eee. Fixed a bug that caused the shell to inappropriately expand command - substitutions in words when expanding directory names for completion. - -fff. Fixed a bug that caused the `fc' builtin to look too far back in the - history list under certain circumstances. - -ggg. Fixed a bug that caused a shell running in Posix mode to search $PWD for - a file specified as an argument to source/. when the file was not found - in $PATH. - -hhh. Fixed a bug that caused the shell to modify the case of a command word - found via command completion when the shell was performing case- - insensitive completion. - -iii. Fixed a bug that caused the shell to search $PATH for an argument to - source/. even when it contained a `/'. - -jjj. Fixed a bug that caused brace expansion to misorder expansions when the - locale did not have a collating order like aAbBcC...zZ. - -kkk. Fixed a bug that did not allow `set +o history' to have any effect when - run in a startup file or from a sourced file. - -lll. Fixed a bug with the precedence of the ?: conditional arithmetic operator. - -mmm. Fixed a bug that caused side effects of temporary variable assignments - to persist in the shell environment. - -nnn. Fixed a bug that caused the terminal to be left in non-canonical mode - when using editing commands that invoke the an editor on the current - command line. - -ooo. Fixed a bug that caused globbing characters and characters in $IFS to not - be quoted appropriately when displaying assignment statements. - -ppp. Fixed a bug that caused the `-e' option to be inherited when sourcing a - file or evaluating a command with `eval' even if the return value of the - command was supposed to be ignored. - -qqq. Fixed a bug that caused the shell to attempt to created variables with - invalid names if such names appeared in the initial environment. - -rrr. Fixed a bug with quote removal in strings where the final character is a - backslash. - -sss. Fixed a bug that caused the effects of special variables to persist even - when the variables were unset as part of the shell reinitializing itself - to execute a shell script. - -ttt. Fixed a bug that caused the history to not be saved after `history -c' or - `history -d' was executed until a sufficient number of commands had been - saved to the history. - -uuu. Bash now parses command substitutions according to Posix rules: parsing - the command contained in $() to find the closing delimiter. - -vvv. Fixed a bug that caused traps on SIGCHLD set in a SIGCHLD handler to - not persist. - -www. Fixed a bug that didn't allow SIGCHLD to interrupt the `wait' builtin - as Posix specifies. - -xxx. Invalid numeric arguments to shell builtins no longer cause the shell to - short-circuit any executing compound command. - -yyy. Fixed a bug that caused the exit status to be lost when `break' was - used to short-circuit a loop's execution. - -zzz. Fixed a bug that caused stray ^? characters to be left in expansions of - "${array[*]}". - -aaaa. Bash now prints better error messages for here documents terminated by - EOF and for identifying the incorrect token in an invalid arithmetic - expression. - -bbbb. Fixed a bug in the variable length word expansion that caused it to - incorrectly calculate the number of multibyte characters. - -cccc. Fixed a race condition that could result in the top-level shell setting - the terminal's process group to an incorrect value if the process - group was changed by a child of a child of the shell. - -dddd. Fixed a bug that caused here documents belonging to commands within a - compound command to be displayed in a syntactially-incorrect form, which - prevented them from being re-read as input. - -eeee. The shell displays more warnings about failures to set the locale. - -ffff. Fixed a bug that caused the body of a here-document to not be saved to - the history list. - -gggg. Fixed a bug that caused configure to incorrectly conclude that FreeBSD - had /dev/fd available, resulting in problems with process substitution. - -2. Changes to Readline - -a. Fixed a number of redisplay errors in environments supporting multibyte - characters. - -b. Fixed bugs in vi command mode that caused motion commands to inappropriately - set the mark. - -c. When using the arrow keys in vi insertion mode, readline allows movement - beyond the current end of the line (unlike command mode). - -d. Fixed bugs that caused readline to loop when the terminal has been taken - away and reads return -1/EIO. - -e. Fixed bugs in redisplay occurring when displaying prompts containing - invisible characters. - -f. Fixed a bug that caused the completion append character to not be reset to - the default after an application-specified completion function changed it. - -g. Fixed a problem that caused incorrect positioning of the cursor while in - emacs editing mode when moving forward at the end of a line while using - a locale supporting multibyte characters. - -h. Fixed an off-by-one error that caused readline to drop every 511th - character of buffered input. - -i. Fixed a bug that resulted in SIGTERM not being caught or cleaned up. - -j. Fixed redisplay bugs caused by multiline prompts with invisible characters - or no characters following the final newline. - -k. Fixed redisplay bug caused by prompts consisting solely of invisible - characters. - -l. Fixed a bug in the code that buffers characters received very quickly in - succession which caused characters to be dropped. - -m. Fixed a bug that caused readline to reference uninitialized data structures - if it received a SIGWINCH before completing initialzation. - -n. Fixed a bug that caused the vi-mode `last command' to be set incorrectly - and therefore unrepeatable. - -o. Fixed a bug that caused readline to disable echoing when it was being used - with an output file descriptor that was not a terminal. - -p. Readline now blocks SIGINT while manipulating internal data structures - during redisplay. - -q. Fixed a bug in redisplay that caused readline to segfault when pasting a - very long line (over 130,000 characters). - -r. Fixed bugs in redisplay when using prompts with no visible printing - characters. - -3. New Features in Bash - -a. When using substring expansion on the positional parameters, a starting - index of 0 now causes $0 to be prefixed to the list. - -b. The `help' builtin now prints its columns with entries sorted vertically - rather than horizontally. - -c. There is a new variable, $BASHPID, which always returns the process id of - the current shell. - -d. There is a new `autocd' option that, when enabled, causes bash to attempt - to `cd' to a directory name that is supplied as the first word of a - simple command. - -e. There is a new `checkjobs' option that causes the shell to check for and - report any running or stopped jobs at exit. - -f. The programmable completion code exports a new COMP_TYPE variable, set to - a character describing the type of completion being attempted. - -g. The programmable completion code exports a new COMP_KEY variable, set to - the character that caused the completion to be invoked (e.g., TAB). - -h. If creation of a child process fails due to insufficient resources, bash - will try again several times before reporting failure. - -i. The programmable completion code now uses the same set of characters as - readline when breaking the command line into a list of words. - -j. The block multiplier for the ulimit -c and -f options is now 512 when in - Posix mode, as Posix specifies. - -k. Changed the behavior of the read builtin to save any partial input received - in the specified variable when the read builtin times out. This also - results in variables specified as arguments to read to be set to the empty - string when there is no input available. When the read builtin times out, - it returns an exit status greater than 128. - -l. The shell now has the notion of a `compatibility level', controlled by - new variables settable by `shopt'. Setting this variable currently - restores the bash-3.1 behavior when processing quoted strings on the rhs - of the `=~' operator to the `[[' command. - -m. The `ulimit' builtin now has new -b (socket buffer size) and -T (number - of threads) options. - -n. The -p option to `declare' now displays all variable values and attributes - (or function values and attributes if used with -f). - -o. There is a new `compopt' builtin that allows completion functions to modify - completion options for existing completions or the completion currently - being executed. - -p. The `read' builtin has a new -i option which inserts text into the reply - buffer when using readline. - -q. A new `-E' option to the complete builtin allows control of the default - behavior for completion on an empty line. - -r. There is now limited support for completing command name words containing - globbing characters. - -s. Changed format of internal help documentation for all builtins to roughly - follow man page format. - -t. The `help' builtin now has a new -d option, to display a short description, - and a -m option, to print help information in a man page-like format. - -u. There is a new `mapfile' builtin to populate an array with lines from a - given file. - -v. If a command is not found, the shell attempts to execute a shell function - named `command_not_found_handle', supplying the command words as the - function arguments. - -w. There is a new shell option: `globstar'. When enabled, the globbing code - treats `**' specially -- it matches all directories (and files within - them, when appropriate) recursively. - -x. There is a new shell option: `dirspell'. When enabled, the filename - completion code performs spelling correction on directory names during - completion. - -y. The `-t' option to the `read' builtin now supports fractional timeout - values. - -z. Brace expansion now allows zero-padding of expanded numeric values and - will add the proper number of zeroes to make sure all values contain the - same number of digits. - -aa. There is a new bash-specific bindable readline function: `dabbrev-expand'. - It uses menu completion on a set of words taken from the history list. - -bb. The command assigned to a key sequence with `bind -x' now sets two new - variables in the environment of the executed command: READLINE_LINE_BUFFER - and READLINE_POINT. The command can change the current readline line - and cursor position by modifying READLINE_LINE_BUFFER and READLINE_POINT, - respectively. - -cc. There is a new &>> redirection operator, which appends the standard output - and standard error to the named file. - -dd. The parser now understands `|&' as a synonym for `2>&1 |', which redirects - the standard error for a command through a pipe. - -ee. The new `;&' case statement action list terminator causes execution to - continue with the action associated with the next pattern in the - statement rather than terminating the command. - -ff. The new `;;&' case statement action list terminator causes the shell to - test the next set of patterns after completing execution of the current - action, rather than terminating the command. - -gg. The shell understands a new variable: PROMPT_DIRTRIM. When set to an - integer value greater than zero, prompt expansion of \w and \W will - retain only that number of trailing pathname components and replace - the intervening characters with `...'. - -hh. There are new case-modifying word expansions: uppercase (^[^]) and - lowercase (,[,]). They can work on either the first character or - array element, or globally. They accept an optional shell pattern - that determines which characters to modify. There is an optionally- - configured feature to include capitalization operators. - -ii. The shell provides associative array variables, with the appropriate - support to create, delete, assign values to, and expand them. - -jj. The `declare' builtin now has new -l (convert value to lowercase upon - assignment) and -u (convert value to uppercase upon assignment) options. - There is an optionally-configurable -c option to capitalize a value at - assignment. - -kk. There is a new `coproc' reserved word that specifies a coprocess: an - asynchronous command run with two pipes connected to the creating shell. - Coprocs can be named. The input and output file descriptors and the - PID of the coprocess are available to the calling shell in variables - with coproc-specific names. - -4. New Features in Readline - -a. A new variable, rl_sort_completion_matches; allows applications to inhibit - match list sorting (but beware: some things don't work right if - applications do this). - -b. A new variable, rl_completion_invoking_key; allows applications to discover - the key that invoked rl_complete or rl_menu_complete. - -c. The functions rl_block_sigint and rl_release_sigint are now public and - available to calling applications who want to protect critical sections - (like redisplay). - -d. The functions rl_save_state and rl_restore_state are now public and - available to calling applications; documented rest of readline's state - flag values. - -e. A new user-settable variable, `history-size', allows setting the maximum - number of entries in the history list. - -f. There is a new implementation of menu completion, with several improvements - over the old; the most notable improvement is a better `completions - browsing' mode. - -g. The menu completion code now uses the rl_menu_completion_entry_function - variable, allowing applications to provide their own menu completion - generators. - -h. There is support for replacing a prefix of a pathname with a `...' when - displaying possible completions. This is controllable by setting the - `completion-prefix-display-length' variable. Matches with a common prefix - longer than this value have the common prefix replaced with `...'. - -i. There is a new `revert-all-at-newline' variable. If enabled, readline will - undo all outstanding changes to all history lines when `accept-line' is - executed. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.2-release, -and the previous version, bash-3.2-beta. - -1. Changes to Bash - -a. Fixed a bug that caused the temporary environment passed to a command to - affect the shell's environment under certain circumstances. - -b. Fixed a bug in the printf builtin that caused the %q format specifier to - ignore empty string arguments. - -c. Improved multibyte character environment detection at configuration time. - -d. Fixed a bug in the read builtin that left spurious escape characters in the - input after processing backslashes when assigning to an array variable. - -2. Changes to Readline - -a. Fixed a redisplay bug that occurred in multibyte-capable locales when the - prompt was one character longer than the screen width. ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.2-beta, -and the previous version, bash-3.2-alpha. - -1. Changes to Bash - -a. Changed the lexical analyzer to treat locale-specific blank characters as - white space. - -b. Fixed a bug in command printing to avoid confusion between redirections and - process substitution. - -c. Fixed problems with cross-compiling originating from inherited environment - variables. - -d. Added write error reporting to printf builtin. - -e. Fixed a bug in the variable expansion code that could cause a core dump in - a multi-byte locale. - -f. Fixed a bug that caused substring expansion of a null string to return - incorrect results. - -g. BASH_COMMAND now retains its previous value while executing commands as the - result of a trap, as the documentation states. - -2. Changes to Readline - -a. Fixed a bug with prompt redisplay in a multi-byte locale to avoid redrawing - the prompt and input line multiple times. - -b. Fixed history expansion to not be confused by here-string redirection. - -c. Readline no longer treats read errors by converting them to newlines, as - it does with EOF. This caused partial lines to be returned from readline(). - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.2-alpha, -and the previous version, bash-3.1-release. - -1. Changes to Bash - -a. Fixed a source bug that caused the minimal configuration to not compile. - -b. Fixed memory leaks in error handling for the `read' builtin. - -c. Changed the [[ and (( compound commands to set PIPESTATUS with their exit - status. - -d. Fixed some parsing problems with compound array assignments. - -e. Added additional configuration changes for: NetBSD (incomplete multibyte - character support) - -f. Fixed two bugs with local array variable creation when shadowing a variable - of the same name from a previous context. - -g. Fixed the `read' builtin to restore the correct set of completion functions - if a timeout occurs. - -h. Added code to defer the initialization of HISTSIZE (and its stifling of the - history list) until the history file is loaded, allowing a startup file to - override the default value. - -i. Tightened up the arithmetic expression parsing to produce better error - messages when presented with invalid operators. - -j. Fixed the cross-compilation support to build the signal list at shell - invocation rather than compile time if cross-compiling. - -k. Fixed multibyte support for non-gcc compilers (or compilers that do not - allow automatic array variable sizing based on a non-constant value). - -l. Several fixes to the code that manages the list of terminated jobs and - their exit statuses, and the list of active and recently-terminated jobs - to avoid pid aliasing/wraparound and allocation errors. - -m. Fixed a problem that allowed scripts to die due to SIGINT while waiting - for children, even when started in the background or otherwise ignoring - SIGINT. - -n. Fixed a bug that caused shells invoked as -/bin/bash from not being - recognized as login shells. - -o. Fixed a problem that caused shells in the background to give the terminal - to a process group other than the foreground shell process group. - -p. Fixed a problem with extracting the `varname' in ${#varname}. - -q. Fixed the code that handles SIGQUIT to not exit immediately -- thereby - calling functions that may not be called in a signal handler context -- - but set a flag and exit afterward (like SIGINT). - -r. Changed the brace expansion code to skip over braces that don't begin a - valid matched brace expansion construct. - -s. Fixed `typeset' and `declare' to not require that their shell function - operands to be valid shell identifiers. - -t. Changed `test' to use access(2) with a temporary uid/euid swap when testing - file attributes and running setuid, and access(2) in most other cases. - -u. Changed completion code to not attempt command name completion on a line - consisting solely of whitespace when no_empty_command_completion is set. - -v. The `hash' builtin now prints nothing in posix mode when the hash table is - empty, and prints a message to that effect to stdout instead of stderr - when not in posix mode. - -w. Fixed a bug in the extended pattern matching code that caused it to fail to - match periods with certain patterns. - -x. Fixed a bug that caused the shell to dump core when performing filename - generation in directories with thousands of files. - -y. Returned to the original Bourne shell rules for parsing ``: no recursive - parsing of embedded quoted strings or ${...} constructs. - -z. The inheritence of the DEBUG, RETURN, and ERR traps is now dependent only - on the settings of the `functrace' and `errtrace' shell options, rather - than whether or not the shell is in debugging mode. - -aa. Fixed a problem with $HOME being converted to ~ in the expansion of - members of the DIRSTACK array. - -bb. Fixed a problem with quoted arguments to arithmetic expansions in certain - constructs. - -cc. The command word completion code now no longer returns matching directories - while searching $PATH. - -dd. Fixed a bug with zero-padding and precision handling in snprintf() - replacement. - -ee. Fixed a bug that caused the command substitution code not to take embedded - shell comments into account. - -ff. Fixed a bug that caused $((...);(...)) to be misinterpreted as an - arithmetic substitution. - -gg. Fixed a bug in the prompt expansion code that inappropriately added a - \001 before a \002 under certain circumstances. - -hh. Fixed a bug that caused `unset LANG' to not properly reset the locale - (previous versions would set the locale back to what it was when bash - was started rather than the system's "native" locale). - -ii. Fixed a bug that could cause file descriptors > 10 to not be closed even - when closed explicitly by a script. - -jj. Fixed a bug that caused single quotes to be stripped from ANSI-C quoting - inside double-quoted command substitutions. - -kk. Fixed a bug that could cause core dumps when `return' was executed as the - last element of a pipeline inside a shell function. - -ll. Fixed a bug that caused DEBUG trap strings to overwrite commands stored in - the jobs list. - -2. Changes to Readline - -a. Fixed a problem that caused segmentation faults when using readline in - callback mode and typing consecutive DEL characters on an empty line. - -b. Fixed several redisplay problems with multibyte characters, all having to - do with the different code paths and variable meanings between single-byte - and multibyte character redisplay. - -c. Fixed a problem with key sequence translation when presented with the - sequence \M-\C-x. - -d. Fixed a problem that prevented the `a' command in vi mode from being - undone and redone properly. - -e. Fixed a problem that prevented empty inserts in vi mode from being undone - properly. - -f. Fixed a problem that caused readline to initialize with an incorrect idea - of whether or not the terminal can autowrap. - -g. Fixed output of key bindings (like bash `bind -p') to honor the setting of - convert-meta and use \e where appropriate. - -h. Changed the default filename completion function to call the filename - dequoting function if the directory completion hook isn't set. This means - that any directory completion hooks need to dequote the directory name, - since application-specific hooks need to know how the word was quoted, - even if no other changes are made. - -i. Fixed a bug with creating the prompt for a non-interactive search string - when there are non-printing characters in the primary prompt. - -j. Fixed a bug that caused prompts with invisible characters to be redrawn - multiple times in a multibyte locale. - -k. Fixed a bug that could cause the key sequence scanning code to return the - wrong function. - -l. Fixed a problem with the callback interface that caused it to fail when - using multi-character keyboard macros. - -m. Fixed a bug that could cause a core dump when an edited history entry was - re-executed under certain conditions. - -n. Fixed a bug that caused readline to reference freed memory when attmpting - to display a portion of the prompt. - -3. New Features in Bash - -a. Changed the parameter pattern replacement functions to not anchor the - pattern at the beginning of the string if doing global replacement - that - combination doesn't make any sense. - -b. When running in `word expansion only' mode (--wordexp option), inhibit - process substitution. - -c. Loadable builtins now work on MacOS X 10.[34]. - -d. Shells running in posix mode no longer set $HOME, as POSIX requires. - -e. The code that checks for binary files being executed as shell scripts now - checks only for NUL rather than any non-printing character. - -f. Quoting the string argument to the [[ command's =~ operator now forces - string matching, as with the other pattern-matching operators. - -4. New Features in Readline - -a. Calling applications can now set the keyboard timeout to 0, allowing - poll-like behavior. - -b. The value of SYS_INPUTRC (configurable at compilation time) is now used as - the default last-ditch startup file. - -c. The history file reading functions now allow windows-like \r\n line - terminators. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.1-release, -and the previous version, bash-3.1-rc2. - -1. Changes to Readline - -a. Several changes to the multibyte redisplay code to fix problems with - prompts containing invisible characters. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.1-rc2, -and the previous version, bash-3.1-rc1. - -1. Changes to Bash - -a. Fixed a bug that caused a DEBUG trap to overwrite a command string that's - eventually attached to a background job. - -b. Changed some code so that filenames with leading tildes with spaces in the - name aren't tilde-expanded by the bash completion code. - -c. Fixed a bug that caused the pushd builtin to fail to change to - directories with leading `-'. - -d. Fixed a small memory leak in the programmable completion code. - -2. Changes to Readline - -a. Fixed a redisplay bug caused by moving the cursor vertically to a line - with invisible characters in the prompt in a multibyte locale. - -b. Fixed a bug that could cause the terminal special chars to be bound in the - wrong keymap in vi mode. - -3. New Features in Bash - -a. If compiled for strict POSIX conformance, LINES and COLUMNS may now - override the true terminal size. - -4. New Features in Readline - -a. A new external application-controllable variable that allows the LINES - and COLUMNS environment variables to set the window size regardless of - what the kernel returns. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.1-rc1, -and the previous version, bash-3.1-beta1. - -1. Changes to Bash - -a. Fixed a bug that could cause core dumps due to accessing the current - pipeline while in the middle of modifying it. - -b. Fixed a bug that caused pathnames with backslashes still quoting characters - to be passed to opendir(). - -c. Command word completion now obeys the setting of completion-ignore-case. - -d. Fixed a problem with redirection that caused file descriptors greater than - 2 to be inappropriately marked as close-on-exec. - -e. In Posix mode, after `wait' is called to wait for a particular process - explicitly, that process is removed from the list of processes known to - the shell, and subsequent attempts to wait for it return errors. - -f. Fixed a bug that caused extended pattern matching to incorrectly scan - backslash-escaped pattern characters. - -g. Fixed a synchronization problem that could cause core dumps when handling - a SIGWINCH. - -h. Fixed a bug that caused an unmatched backquote to be accepted without an - error when processing here documents. - -i. Fixed a small memory leak in the `cd' builtin. - -j. Fix for MacOS X so it gets the values for the HOSTTYPE, MACHTYPE, and - OSTYPE variables at build time, to support universal binaries. - -k. Fixed a bug that could cause an exit trap to return the exit status of - the trap command rather than the status as it was before the trap was - run as the shell's exit status. - -2. New Features in Bash - -3. Changes to Readline - -a. Fixed a bug that caused reversing the incremental search direction to - not work correctly. - -b. Fixed the vi-mode `U' command to only undo up to the first time insert mode - was entered, as Posix specifies. - -c. Fixed a bug in the vi-mode `r' command that left the cursor in the wrong - place. - -4. New Features in Readline - -a. New application-callable auxiliary function, rl_variable_value, returns - a string corresponding to a readline variable's value. - -b. When parsing inputrc files and variable binding commands, the parser - strips trailing whitespace from values assigned to boolean variables - before checking them. - - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.1-beta1, -and the previous version, bash-3.1-alpha1. - -1. Changes to Bash - -a. Added some system-specific signal names. - -b. Fixed a typo in the ulimit builtin to make `x' the right option to - maniuplate the limit on file locks. - -c. Fixed a problem with using += to append to index 0 of an array variable - when not using subscript syntax. - -d. A few changes to configure.in to remove calls to obsolete or outdated - macros. - -e. Make sure changes to variables bash handles specially (e.g., LC_ALL) are - made when the variable is set in the temporary environment to a command. - -f. Make sure changes to variables bash handles specially (e.g., LC_ALL) are - made when the variable is modified using `printf -v'. - -g. The export environment is now remade on cygwin when HOME is changed, so - DLLs bash is linked against pick up the new value. This fixes problems - with tilde expansion when linking against and already-installed readline. - -h. Small fix to the logic for performing tilde expansion in posix mode, so - expansion on the right-hand side of an assignment statement takes place. - -i. Fixed a bug that prevented redirections associated with a shell function - from being executed when in a subshell. - -j. Fixed `source' and `.' builtins to not require an executable file when - searching $PATH for a file to source. - -k. Fixed a bug that caused incorrect word splitting in a function when IFS - was declared local, then unset. - -l. Fixed a problem with the `kill' builtin that prevented sending signals - to a process group under certain circumstances when providing a pid < 0. - -m. When in POSIX mode, `pwd' now checks that the value it prints is the same - directory as `.', even when displaying $PWD. - -n. Fixed a problem with the `read' builtin when reading a script from standard - input and reading data from the same file. - -o. Fixed a problem with the `type' and `command' builtins that caused absolute - pathnames to be displayed incorrectly. - -p. Some changes to the `bg' builtin for POSIX conformance. - -q. The `fc' builtin now removes the `fc' command that caused it to invoke an - editor on specified history entries from the history entirely, rather than - simply ignoring it. - -r. When in POSIX mode, the `v' command in vi editing mode simply invokes vi - on the current command, rather than checking $FCEDIT and $EDITOR. - -s. Fixed a small memory leak in the pathname canonicalization code. - -t. Fixed a bug that caused the expanded value of a $'...' string to be - incorrectly re-quoted if it occurred within a double-quoted ${...} - parameter expansion. - -u. Restored default emacs-mode key binding of M-TAB to dynamic-complete-history. - -v. Fixed a bug that caused core dumps when interrupting loops running builtins - on some systems. - -w. Make sure that some of the functions bash provides replacements for are - not cpp defines. - -x. The code that scans embedded commands for the parser (`...` and $(...)) is - now more aware of embedded comments and their effect on quoted strings. - -y. Changed the `-n' option to the `history' builtin to not reset the number of - history lines read in the current session after reading the new lines from - the history file if the history is being appended when it is written to - the file, since the appending takes care of the problem that the adjustment - was intended to solve. - -z. Improved the error message displayed when a shell script fails to execute - because the environment and size of command line arguments are too large. - -aa. A small fix to make sure that $HISTCMD is evaluated whenever the shell is - saving commands to the history list, not just when HISTSIZE is defined. - -2. Changes to Readline - -a. The `change-case' command now correctly changes the case of multibyte - characters. - -b. Changes to the shared library construction scripts to deal with Windows - DLL naming conventions for Cygwin. - -c. Fixed the redisplay code to avoid core dumps resulting from a poorly-timed - SIGWINCH. - -d. Fixed the non-incremental search code in vi mode to dispose of any current - undo list when copying a line from the history into the current editing - buffer. - -e. The variable assignment code now ignores whitespace at the end of lines - when assigning to boolean variables. - -f. The `C-w' binding in incremental search now understands multibyte - characters. - -3. New Features in Bash - -a. A new configuration option, `--enable-strict-posix-default', which will - build bash to be POSIX conforming by default. - -4. New Features in Readline - -a. If the rl_completion_query_items is set to a value < 0, readline never - asks the user whether or not to view the possible completions. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.1-alpha1, -and the previous version, bash-3.0-release. - -1. Changes to Bash - -a. Fixed a bug that caused bash to crash if referencing an unset local array. - -b. Fixed a problem that caused tilde expansion to not be performed before - attempting globbing word completion. - -c. Fixed an incompatibility so that a first argument to trap that's a valid - signal number will be trated as a signal rather than a command to execute. - -d. Fixed ${#word} expansion to correctly compute the length of a string - containing multibyte characters. - -e. Fixed a bug that caused bash to not pass the correct flags for signal - disposition to child processes. - -f. Fixed a bug that caused `fc -l' to list one too many history entries. - -g. Some fixes to `fc' for POSIX conformance. - -h. Some fixes to job status display for POSIX conformance. - -i. Fixed a bug that caused `command -v' to display output if a command was not - found -- it should be silent. - -j. In POSIX mode, `type' and `command -[vV]' do not report non-executable - files, even if the shell will attempt to execute them. - -k. Fixed a bug that caused the `==' operator to the [[ command to not attempt - extended pattern matching. - -l. Fixed the brace expansion code to handle characters whose value exceeds 128. - -m. Fixed `printf' to handle strings with a leading `\0' whose length is - non-zero. - -n. Fixed a couple of problems with brace expansion where `${' was handled - incorrectly. - -o. Fixed off-by-one error when calculating the upper bound of `offset' when - processing the ${array[@]:offset:length} expansion. - -p. System-specific configuration changes for: FreeBSD 5.x, Interix, MacOS X - 10.4, Linux 2.4+ kernels, Linux 3.x kernels, Dragonfly BSD, QNX 6.x, - Cygwin - -q. Fixed a bug that caused the shell to ignore the status of the rightmost - command in a pipeline when the `pipefail' option was enabled. - -r. Fixed a completion bug that caused core dumps when expanding a directory - name. - -s. Fixed a bug that prevented `hash -d' from removing commands from the hash - table. - -t. Fixed word splitting to avoid really bad quadratic performance when - expanding long lists. - -u. Fixed a bug that caused negative offsets in substring expansion to use the - wrong values. - -v. Fixed a bug in printf that caused it to not return failure on write errors. - -w. Fixed a bug that caused commands in subshells to not be properly timed. - -x. The shell parser no longer attempts to parse a compound assignment specially - unless in a position where an assignment statement is acceptable or parsing - arguments to a builtin that accepts assignment statements. - -y. Fixed a problem that caused a `case' statement to be added to the history - incorrectly as a single command if the `case word' was on one line and the - `in' on another. - -z. Fixed a problem that caused internal shell quoting characters to be - incorrectly quoted with backslashes under some circumstances. - -aa. The shell now performs correct word splitting when IFS contains multibyte - characters. - -bb. The mail checking code now resets the cached file information if the size - drops to 0, even if the times don't change. - -cc. A completed command name that is found in $PATH as well as the name of a - directory in the current directory no longer has a slash appended in certain - circumstances: a single instance found in $PATH when `.' is not in $PATH, - and multiple instances found in $PATH, even when `.' is in $PATH. - -dd. Incorporated tilde expansion into the word expansion code rather than as a - separately-called function, fixing some cases where it was performed - inappropriately (e.g., after the second `=' in an assignment statement or - in a double-quoted parameter expansion). - -ee. Fixed several bugs encountered when parsing compound assignment statements, - so that compound assignments appearing as arguments to builtins are no - longer double-expanded. - -ff. Fixed a bug in the command execution code that caused asynchronous commands - containing command substitutions to not put the terminal in the wrong - process group. - -gg. Bash now handles the case where the WCONTINUED flag causes waitpid() to - return -1/EINVAL at runtime as well as configuration time. - -hh. Fixed parser to generate an error when the pipeline `argument' to `!' or - `time' is NULL. - -ii. The shell now takes a little more care when manipulating file descriptors - greater than 9 with the `exec' builtin. - -jj. Fixed a bug that caused variable assignments preceding the `command' builtin - preceding a special builtin to be preserved after the command completed in - POSIX mode. - -kk. Fixed a bug that allowed variables beginning with a digit to be created. - -ll. Fixed a bug that caused a \ to be removed when parsing a $'...' - construct. - -mm. A shell whose name begins with `-' will now be a restricted shell if the - remainder of the name indicates it should be restricted. - -nn. Fixed a bug that could cause a core dump if FUNCNAME were changed or unset - during a function's execution. - -oo. Fixed a bug that caused executing a `return' in a function to not execute - a RETURN trap. The RETURN trap is inherited by shell functions only if - function tracing is globally enabled or has been enabled for that function. - -pp. Fixed cases where var[@] was not handled exactly like var, when var is a - scalar variable. - -qq. Fixed a bug that caused the first character after a SIGINT to be discarded - under certain circumstances. - -rr. Fixed exit status code so that a suspended job returns 128+signal as its - exit status (preventing commands after it in `&&' lists from being - executed). - -ss. Fixed a bug that caused the shell parser state to be changed by executing - a shell function as a result of word completion. - -tt. Fixed a long-standing bug that caused '\177' characters in variable - values to be discarded when expanded in double-quoted strings. - -uu. Fixed a bug that caused $RANDOM to be re-seeded multiple times in a - subshell environment. - -vv. Extensive changes to the job management code to avoid the pid-reuse and - pid-aliasing problems caused by retaining the exit status of too many jobs, - but still retain as many background job statuses as POSIX requires. - -ww. Fixed a parser bug in processing \ that caused things like - - ((echo 5) \ - (echo 6)) - - to not work correctly. - -xx. `pwd -P' now sets $PWD to a directory name containing no symbolic links - when in posix mode, as POSIX requires. - -yy. In posix mode, bash no longer sets $PWD to a name containing no symbolic - links if a directory is chosen from $CDPATH. - -zz. The word splitting code now treats an IFS character that is not space, - tab, or newline and any adjacent IFS white space as a single delimiter, as - SUSv3/XPG6 require. - -aaa. The `read' builtin now checks whether or not the number of fields read is - exactly the same as the number of variables instead of just assigning the - rest of the line (minus any trailing IFS white space) to the last - variable. This is what POSIX/SUS/XPG all require. - -bbb. Fixed a bug that caused `read' to always check whether or not fd 0 was a - pipe, even when reading from another file descriptor. - -ccc. Fixed a bug that caused short-circuiting of execution even if the return - value was being inverted. - -ddd. Fixed a bug that caused a core dump while decoding \W escapes in PS1 if - PWD was unset. - -eee. Fixed a bug in `read' that counted internal quoting characters for the - purposes of `read -n'. - -fff. Fixed a bug so that a function definition in a pipeline causes a child - process to be forked at the right time. - -ggg. Bash will not attempt to link against a readline library that doesn't - have rl_gnu_readline_p == 1. - -hhh. Fixed a bug that caused `read' to consume one too many characters when - reading a fixed number of characters and the Nth character is a backslash. - -iii. Fixed a bug that caused `unset' on variables in the temporary environment - to leave them set when `unset' completed. - -jjj. Fixed a bug that caused bash to close fd 2 if an `exec' failed and the - shell didn't exit. - -kkk. The completion code is more careful to not turn `/' or `///' into `//', - for those systems on which `//' has special meaning. - -lll. Fixed a bug that caused command substitution in asynchronous commands to - close the wrong file descriptors. - -mmm. The shell no longer prints status messages about terminated background - processes unless job control is active. - -nnn. Fixed a bug that prevented multiple consecutive invocations of `history -s' - from adding all the commands to the history list. - -ooo. Added a couple of changes to make arithmetic expansion more consistent in - all its contexts (still not perfect). - -ppp. Fixed a bug that caused the parser to occasionally not find the right - terminating "`" in an old-style command substitution. - -qqq. Fixed a bug that caused core dumps when the shell was reading its non- - interactive input from fd 0 and fd 0 was duplicated and restored using a - combination of `exec' (to save) and redirection (to restore). - -rrr. Fixed a problem that caused loops in sourced scripts to not be cleaned - up properly when a `return' is executed. - -sss. Change internal command substitution completion function to append a slash - to directory names in the command. - -2. Changes to Readline - -a. Fixed a bug that caused multiliine prompts to be wrapped and displayed - incorrectly. - -b. Fixed a bug that caused ^P/^N in emacs mode to fail to display the current - line correctly. - -c. Fixed a problem in computing the number of invisible characters on the first - line of a prompt whose length exceeds the screen width. - -d. Fixed vi-mode searching so that failure preserves the current line rather - than the last line in the history list. - -e. Fixed the vi-mode `~' command (change-case) to have the correct behavior at - end-of-line when manipulating multibyte characters. - -f. Fixed the vi-mode `r' command (change-char) to have the correct behavior at - end-of-line when manipulating multibyte characters. - -g. Fixed multiple bugs in the redisplay of multibyte characters: displaying - prompts longer than the screen width containing multibyte characters, - -h. Fix the calculation of the number of physical characters in the prompt - string when it contains multibyte characters. - -i. A non-zero value for the `rl_complete_suppress_append' variable now causes - no `/' to be appended to a directory name. - -j. Fixed forward-word and backward-word to work when words contained - multibyte characters. - -k. Fixed a bug in finding the delimiter of a `?' substring when performing - history expansion in a locale that supports multibyte characters. - -l. Fixed a memory leak caused by not freeing the timestamp in a history entry. - -m. Fixed a bug that caused "\M-x" style key bindings to not obey the setting - of the `convert-meta' variable. - -n. Fixed saving and restoring primary prompt when prompting for incremental - and non-incremental searches; search prompts now display multibyte - characters correctly. - -o. Fixed a bug that caused keys originally bound to self-insert but shadowed - by a multi-character key sequence to not be inserted. - -p. Fixed code so rl_prep_term_function and rl_deprep_term_function aren't - dereferenced if NULL (matching the documentation). - -q. Extensive changes to readline to add enough state so that commands - requiring additional characters (searches, multi-key sequences, numeric - arguments, commands requiring an additional specifier character like - vi-mode change-char, etc.) work without synchronously waiting for - additional input. - -r. Lots of changes so readline builds and runs on MinGW. - -s. Readline no longer tries to modify the terminal settings when running in - callback mode. - -t. The Readline display code no longer sets the location of the last invisible - character in the prompt if the \[\] sequence is empty. - -3. New Features in Bash - -a. Bash now understands LC_TIME as a special variable so that time display - tracks the current locale. - -b. BASH_ARGC, BASH_ARGV, BASH_SOURCE, and BASH_LINENO are no longer created - as `invisible' variables and may not be unset. - -c. In POSIX mode, if `xpg_echo' option is enabled, the `echo' builtin doesn't - try to interpret any options at all, as POSIX requires. - -d. The `bg' builtin now accepts multiple arguments, as POSIX seems to specify. - -e. Fixed vi-mode word completion and glob expansion to perform tilde - expansion. - -f. The `**' mathematic exponentiation operator is now right-associative. - -g. The `ulimit' builtin has new options: -i (max number of pending signals), - -q (max size of POSIX message queues), and -x (max number of file locks). - -h. A bare `%' once again expands to the current job when used as a job - specifier. - -i. The `+=' assignment operator (append to the value of a string or array) is - now supported for assignment statements and arguments to builtin commands - that accept assignment statements. - -j. BASH_COMMAND now preserves its value when a DEBUG trap is executed. - -k. The `gnu_errfmt' option is enabled automatically if the shell is running - in an emacs terminal window. - -l. New configuration option: --single-help-strings. Causes long help text - to be written as a single string; intended to ease translation. - -m. The COMP_WORDBREAKS variable now causes the list of word break characters - to be emptied when the variable is unset. - -n. An unquoted expansion of $* when $IFS is empty now causes the positional - parameters to be concatenated if the expansion doesn't undergo word - splitting. - -o. Bash now inherits $_ from the environment if it appears there at startup. - -p. New shell option: nocasematch. If non-zero, shell pattern matching ignores - case when used by `case' and `[[' commands. - -q. The `printf' builtin takes a new option: -v var. That causes the output - to be placed into var instead of on stdout. - -r. By default, the shell no longer reports processes dying from SIGPIPE. - -s. Bash now sets the extern variable `environ' to the export environment it - creates, so C library functions that call getenv() (and can't use the - shell-provided replacement) get current values of environment variables. - -4. New Features in Readline - -a. The key sequence sent by the keypad `delete' key is now automatically - bound to delete-char. - -b. A negative argument to menu-complete now cycles backward through the - completion list. - -c. A new bindable readline variable: bind-tty-special-chars. If non-zero, - readline will bind the terminal special characters to their readline - equivalents when it's called (on by default). - -d. New bindable command: vi-rubout. Saves deleted text for possible - reinsertion, as with any vi-mode `text modification' command; `X' is bound - to this in vi command mode. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.0-release, -and the previous version, bash-3.0-rc1. - -1. Changes to Bash - -a. Fixed a boundary overrun that could cause segmentation faults when the - completion code hands an incomplete construct to the word expansion - functions. - -b. Changed posix mode behavior so that an error in a variable assignment - preceding a special builtin causes a non-interactive shell to exit. - -c. Change the directory expansion portion of the completion code to not - expand embedded command substitutions if the directory name appears in - the file system. - -d. Fixed a problem that caused `bash -r' to turn on restrictions before - reading the startup files. - -e. Fixed a problem with the default operation of the `umask' builtin. - -2. Changes to Readline - -a. Fixed a problem with readline saving the contents of the current line - before beginning a non-interactive search. - -b. Fixed a problem with EOF detection when using rl_event_hook. - -c. Fixed a problem with the vi mode `p' and `P' commands ignoring numeric - arguments. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.0-rc1, -and the previous version, bash-3.0-beta1. - -1. Changes to Bash - -a. Fixed a bug that caused incorrect behavior when referecing element 0 of - an array using $array, element 0 was unset, and `set -u' was enabled. - -b. System-specific changes for: SCO Unix 3.2, Tandem. - -c. Fixed a bug that caused inappropriate word splitting when a variable was - expanded within a double-quoted string that also included $@. - -d. Fixed a bug that caused `pwd' to not display anything in physical mode - when the file system had changed underneath the shell. - -e. Fixed a bug in the pre- and post- increment and decrement parsing in the - expression evaluator that caused errors when the operands and corresponding - operators were separated by whitespace. - -f. Fixed a bug that caused `history -p' to add an entry to the history list, - counter to the documentation. (Keeps the history expansions invoked by - emacs-mode command line editing from doing that as well.) - -g. Fixed a bug that could cause a core dump if `cd' is asked to print out a - pathname longer than PATH_MAX characters. - -h. Fixed a bug that caused jobs to be put into the wrong process group under - some circumstances after enabling job control with `set -m'. - -i. `unalias' now returns failure if no alias name arguments are supplied. - -j. Documented the characters not allowed to appear in an alias name. - -k. $* is no longer expanded as if in double quotes when it appears in the - body of a here document, as the SUS seems to require. - -l. The `bashbug' script now uses a directory in $TMPDIR for exclusive - access rather than trying to guess how the underlying OS provides for - secure temporary file creation. - -m. Fixed a few problems with `cd' and `pwd' when asked to operate on pathnames - longer than PATH_MAX characters. - -n. Fixed a memory leak caused when creating multiple local array variables - with identical names. - -o. Fixed a problem with calls to getcwd() so that bash now operates better - when the full pathname to the current directory is longer than PATH_MAX - bytes. - -p. The `trap' builtin now reports an error if a single non-signal argument - is specified. - -q. Fixed a bug that caused `umask' to not work correctly when presented - with a mask of all 0s. - -r. When `getopts' reaches the end of options, OPTARG is unset, as POSIX - appears to specify. - -s. Interactive mode now depends on whether or not stdin and stderr are - connected to a tty; formerly it was stdin and stdout. POSIX requires - this. - -t. Fixed vi-mode completion to work more as POSIX specifies (e.g., doing the - right kind of filename generation). - -2. Changes to Readline - -a. Fixed a problem that could cause readline to refer to freed memory when - moving between history lines while doing searches. - -b. Improvements to the code that expands and displays prompt strings - containing multibyte characters. - -c. Fixed a problem with vi-mode not correctly remembering the numeric argument - to the last `c'hange command for later use with `.'. - -d. Fixed a bug in vi-mode that caused multi-digit count arguments to work - incorrectly. - -e. Fixed a problem in vi-mode that caused the last text modification command - to not be remembered across different command lines. - -f. Fixed problems with changing characters and changing case at the end of - the line. - -3. New Features in Bash - -a. The `jobs', `kill', and `wait' builtins now accept job control notation - even if job control is not enabled. - -b. The historical behavior of `trap' that allows a missing `action' argument - to cause each specified signal's handling to be reset to its default is - now only supported when `trap' is given a single non-option argument. - -4. New Features in Readline - -a. When listing completions, directories have a `/' appended if the - `mark-directories' option has been enabled. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.0-beta1, -and the previous version, bash-3.0-alpha. - -1. Changes to Bash - -a. Fixes to build correctly when arrays are not compiled into the shell. - -b. Fixed command substitution to run any exit trap defined in the command - substitution before returning; the exit trap is not inherited from the - calling shell. - -c. Fixes to process group synchronization code so that every child process - attempts to set the terminal's process group; fixes some synchronization - problems on Linux kernels that schedule the child to always run before - the parent. - -d. Fixed processing of octal and hex constants in printf builtin for POSIX.2 - compliance. - -e. Fixed a couple of core dumps in the pattern removal code. - -f. Fixes to the array subrange extraction code to deal better with sparse - arrays. - -g. Parser errors and other errors that result in the shell exiting now cause - the exit trap to be run. - -h. Change the command substitution completion functions to not append any - closing quote, because it would be inserted a closing "`" or ")". - -i. Fix history initialization so assignments to $histchars made in startup - files are honored. - -j. If an exit trap does not contain a call to `exit', the shell now uses - the exit status of the last command executed before the trap as the exit - status of the shell. - -k. The parser now prompts with $PS2 if it reads a newline while parsing a - compound array assignment statement. - -l. When performing a compound array assignment, the parser doesn't treat - words of the form [index]=value as assignments if they're the result of - expansions. - -m. Fixed a bug that caused `return' executed in a trap command to make the - shell think it was still running the trap. - -n. Fixed the value of errno set by the pathname canonicalization functions. - -o. Changed the grammar so that `time' alone on a line times a null command - rather than being a syntax error. - -p. The pattern substitution code no longer performs quote removal on the - pattern before trying to match it, as the pattern removal functions do. - -q. Fixed a bug that could cause core dumps when checking whether a quoted - command name was being completed. - -r. Fixes to the pattern removal and pattern replacement expansions to deal - with multibyte characters better (and faster). - -s. Fix to the substring expansion (${param:off[:len]}) to deal with (possibly - multibyte) characters instead of raw bytes. - -t. Fixed a bug that caused some key bindings set in an inputrc to be ignored - at shell startup. - -u. Fixed a bug that caused unsetting a local variable within a function to - not work correctly. - -v. Fixed a bug that caused invalid variables to be created when using - `read -a'. - -w. Fixed a bug that caused "$@" to expand incorrectly when used as the right - hand side of a parameter expansion such as ${word:="$@"} if the first - character of $IFS was not a space. - -x. Fixed a slight cosmetic problem when printing commands containing a - `>&word' redirection. - -y. Fixed a problem that could cause here documents to not be created correctly - if the system temporary directory did not allow writing. - -2. Changes to Readline - -a. Change to history expansion functions to treat `^' as equivalent to word - one, as the documention states. - -b. Some changes to the display code to improve display and redisplay of - multibyte characters. - -c. Changes to speed up the multibyte character redisplay code. - -d. Fixed a bug in the vi-mode `E' command that caused it to skip over the - last character of a word if invoked while point was on the word's - next-to-last character. - -e. Fixed a bug that could cause incorrect filename quoting when - case-insensitive completion was enabled and the word being completed - contained backslashes quoting word break characters. - -f. Fixed a bug in redisplay triggered when the prompt string contains - invisible characters. - -g. Fixed some display (and other) bugs encountered in multibyte locales - when a non-ascii character was the last character on a line. - -h. Fixed some display bugs caused by multibyte characters in prompt strings. - -i. Fixed a problem with history expansion caused by non-whitespace characters - used as history word delimiters. - -3. New Features in Bash - -a. printf builtin understands two new escape sequences: \" and \?. - -b. `echo -e' understands two new escape sequences: \" and \?. - -c. The GNU `gettext' package and libintl have been integrated; the shell's - messages can be translated into different languages. - -d. The `\W' prompt expansion now abbreviates $HOME as `~', like `\w'. - -e. The error message printed when bash cannot open a shell script supplied - as argument 1 now includes the name of the shell, to better identify - the error as coming from bash. - -4. New Features in Readline - -a. New application variable, rl_completion_quote_character, set to any - quote character readline finds before it calls the application completion - function. - -b. New application variable, rl_completion_suppress_quote, settable by an - application completion function. If set to non-zero, readline does not - attempt to append a closing quote to a completed word. - -c. New application variable, rl_completion_found_quote, set to a non-zero - value if readline determines that the word to be completed is quoted. - Set before readline calls any application completion function. - -d. New function hook, rl_completion_word_break_hook, called when readline - needs to break a line into words when completion is attempted. Allows - the word break characters to vary based on position in the line. - -e. New bindable command: unix-filename-rubout. Does the same thing as - unix-word-rubout, but adds `/' to the set of word delimiters. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-3.0-alpha, -and the previous version, bash-2.05b-release. - -1. Changes to Bash - -a. Fixes so that the shell will compile without some of the default options - defined. - -b. Fixed an error message that did not pass enough arguments to printf. - -c. Fixed a bug that caused input redirection to a builtin inside a script - being read from standard input to result in the rest of the already- - read and buffered script to be discarded. - -d. Fixed a bug that caused subshell initialization to close the file - descriptor from which the shell was reading a script under certain - circumstances. - -e. Fixed a bug that caused the shell to not advance a string pointer over - a null wide character when doing string operations. - -f. Fixed the internal logout code so that shells that time out waiting for - input (using $TMOUT) run ~/.bash_logout. - -g. Portability and configuration changes for: cygwin, HP/UX, GNU/FreeBSD. - -h. The parser no longer adds implicit double quotes to ((...)) arithmetic - commands. - -i. The ((...)) arithmetic command evaluation code was fixed to not dump core - when the expanded string is null. - -j. The ((...)) arithmetic command evaluation code was fixed to not perform - variable assignments while expanding the expression. - -k. Fixed a bug that caused word splitting to be performed incorrectly when - IFS is set, but null. - -l. Fixed a bug in brace expansion that caused a quoted `$' preceding an - open brace to inhibit brace expansion. - -m. Fixed a bug that caused a leading `-' in the shell's name to cause it to - not be recognized as a restricted shell. - -n. Fixed a bug in the arithmetic evaluation code that could cause longjmps - to an invalid location and result in a core dump. - -o. Fixed a bug in the calculation of how many history lines are new in a - single shell session when reading new history lines from a file with - `history -n'. - -p. Fixed a bug in pathname canonicalization that caused the shell to dump - core when presented with a pathname longer than PATH_MAX. - -q. Fixed the parser so that it doesn't try to compare a char variable to - EOF, which fails when chars are unsigned. - -r. Fixed a bug in the simple command execution code that caused occasional - core dumps. - -s. The shell does a better job of saving any partial parsing state during - operations which cause a command to be executed while a line is being - entered and parsed. - -t. The completion code now splits words more like the expansion code when - $IFS is used to split. - -u. The locale code does a better job of recomputing the various locale - variable values when LC_ALL is unset. - -v. The programmable completion code does a better job of dequoting expanded - word lists before comparing them against the word to be matched. - -w. The shell no longer seg faults if the expanded value of $PS4 is null - and `set -x' is enabled. - -x. Fixed a bug that caused core dumps when a here string expanded to NULL. - -y. The mail checking code now makes sure the mailbox is bigger before - reporting the existence of new mail. - -z. The parser does not try to expand $'...' and $"..." when the appear - within double quotes unless the `extquote' option has been enabled with - `shopt'. For backwards compatibility, it is enabled by default. - -aa. Fixed a bug that caused `for x; do ...' and `select x; do ... to use - $@ instead of "$@" for the implicit list of arguments. - -bb. Fixed a bug that caused a subshell of a restricted shell (e.g., one - spawned to execute a pipeline) to not exit immediately if attempting - to use a command containing a slash. - -cc. Fixed a problem with empty replacements for a pattern that doesn't match - when performing ${param/word/} expansion. - -dd. Word expansions performed while expanding redirections no longer search - a command's temporary environment to expand variable values. - -ee. Improvements to the alias expansion code when expanding subsequent words - because an aliase's value ends with a space. - -ff. `cd -' now prints the current working directory after a successful chdir - even when the shell is not interactive, as the standard requires. - -gg. The shell does a better job of ensuring a child process dies of SIGINT - before resending SIGINT to itself. - -hh. The arithmetic expansion variable assignment code now does the right - thing when assigning to `special' variables like OPTIND. - -ii. When history expansion verification is enabled, the bash readline helper - functions that do history expansion on the current line don't print - the results. - -jj. Fixed bugs with multiple consecutive alias expansion when one of the - expansions ends with a space. - -kk. Fixed a problem in the programmable completion code that could cause core - dumps when trying to initialize a set of possible completions from a - list of variables. - -ll. The \[ and \] escape characters are now ignored when decoding the prompt - string if the shell is started with editing disabled. - -mm. Fixed a bug that could leave extra characters in a string when doing - quoted null character removal. - -nn. Command substitution and other subshell operations no longer reset the - line number (aids the bash debugger). - -oo. Better line number management when executing simple commands, conditional - commands, for commands, and select commands. - -pp. The globbing code now uses malloc, with its better failure properties, - rather than alloca(). - -qq. Fixed a bug that caused expansions like #{a[2]:=value} to create the - appropriate array element instead of a variable named `a[2]'. - -rr. Fixed a bug in the handling of a `?(...)' pattern immediately following - a `*' when extglob is enabled. - -ss. Fixed a bug that caused a `return' invoked in an exit trap when exit is - invoked in a function to misbehave. - -tt. Fixed a bug that caused CTLESC and CTLNUL characters to not be escaped - by the internal shell string quoting functions. - -uu. Fixed a bug that caused quoted null characters in an expanded word list - to be inappropriately assigned to an array variable when using `read -a'. - -vv. Fixed a bug that caused redirections accompanying a null command to persist - in the current shell. - -ww. Fixed a bug that caused the prompt to be printed when the shell was - expanding a multiline alias. - -xx. Fixed a bug that resulted in core dumps when the completion for a command - changed the compspec. - -yy. Fixed a bug that caused evaluation of programmable completions to print - notifications of completed jobs. - -zz. Bash now disables line editing when $EMACS == `t' and $TERM == `dumb' - (which is what emacs shell windows do). - -aaa. In posix mode, `kill -l' causes signal names to be displayed without - a leading `SIG'. - -bbb. Clear error flag on standard output so it doesn't persist across multiple - builtin commands. - -ccc. In posix mode, `alias' displays alias values without the leading `alias', - so the output cannot be used as subsequent input. - -ddd. In posix mode, the `trap' builtin doesn't check whether or not its - first argument is a signal specification and revert the signal handling - to its original disposition if it is. - -eee. Fixed several bugs in the handling of "$*" and "${array[*]}" by the - pattern substitution and removal expansions. - -fff. Fixed several problems with the handling of ${array[@]}, ${array[*]}, - $@, and $* by the indirect variable expansion code. - -ggg. Fixed a bug that did not allow `time' to be aliased. - -hhh. Improved the mail checking code so it won't check (and possibly cause an - NFS file system mount) until MAILPATH or MAIL is given a value -- there - is no default if DEFAULT_MAIL_DIRECTORY is not defined at compile time. - (It is computed by configure, but can be #undef'd in config-bot.h.) - -iii. If the `chkwinsize' option is enabled, the shell checks for window size - changes if a child process exits due to a signal. - -jjj. Removed the attempts to avoid adding a slash at the end of a completed - executable name if there was a directory with the same name in the - current directory. - -kkk. Fixed PATH lookup code so it treats the permission bits separately for - owner, group, and other, rather than checking them all. - -lll. Fixed the locale code to reset the parser's idea of the character class - , which controls how it splits tokens, when the locale changes. - -mmm. The shell now binds its special readline functions and key bindings only - if the user's inputrc file has not already bound them. - -nnn. The shell now reports on processes that dump core due to signals when - invoked as `-c command'. - -2. Changes to Readline - -a. Fixes to avoid core dumps because of null pointer references in the - multibyte character code. - -b. Fix to avoid infinite recursion caused by certain key combinations. - -c. Fixed a bug that caused the vi-mode `last command' to be set incorrectly. - -d. Readline no longer tries to read ahead more than one line of input, even - when more is available. - -e. Fixed the code that adjusts the point to not mishandle null wide - characters. - -f. Fixed a bug in the history expansion `g' modifier that caused it to skip - every other match. - -g. Fixed a bug that caused the prompt to overwrite previous output when the - output doesn't contain a newline and the locale supports multibyte - characters. This same change fixes the problem of readline redisplay - slowing down dramatically as the line gets longer in multibyte locales. - -h. History traversal with arrow keys in vi insertion mode causes the cursor - to be placed at the end of the new line, like in emacs mode. - -i. The locale initialization code does a better job of using the right - precedence and defaulting when checking the appropriate environment - variables. - -j. Fixed the history word tokenizer to handle <( and >( better when used as - part of bash. - -k. The overwrite mode code received several bug fixes to improve undo. - -l. Many speedups to the multibyte character redisplay code. - -m. The callback character reading interface should not hang waiting to read - keyboard input. - -n. Fixed a bug with redoing vi-mode `s' command. - -o. The code that initializes the terminal tracks changes made to the terminal - special characters with stty(1) (or equivalent), so that these changes - are reflected in the readline bindings. New application-callable function - to make it work: rl_tty_unset_default_bindings(). - -p. Fixed a bug that could cause garbage to be inserted in the buffer when - changing character case in vi mode when using a multibyte locale. - -q. Fixed a bug in the redisplay code that caused problems on systems - supporting multibyte characters when moving between history lines when the - new line has more glyphs but fewer bytes. - -r. Undo and redo now work better after exiting vi insertion mode. - -s. Make sure system calls are restarted after a SIGWINCH is received using - SA_RESTART. - -t. Improvements to the code that displays possible completions when using - multibyte characters. - -u. Fixed a problem when parsing nested if statements in inputrc files. - -v. The completer now takes multibyte characters into account when looking for - quoted substrings on which to perform completion. - -w. The history search functions now perform better bounds checking on the - history list. - -3. New Features in Bash - -a. ANSI string expansion now implements the \x{hexdigits} escape. - -b. There is a new loadable `strftime' builtin. - -c. New variable, COMP_WORDBREAKS, which controls the readline completer's - idea of word break characters. - -d. The `type' builtin no longer reports on aliases unless alias expansion - will actually be performed. - -e. HISTCONTROL is now a colon-separated list of values, which permits - more extensibility and backwards compatibility. - -f. HISTCONTROL may now include the `erasedups' option, which causes all lines - matching a line being added to be removed from the history list. - -g. `configure' has a new `--enable-multibyte' argument that permits multibyte - character support to be disabled even on systems that support it. - -h. New variables to support the bash debugger: BASH_ARGC, BASH_ARGV, - BASH_SOURCE, BASH_LINENO, BASH_SUBSHELL, BASH_EXECUTION_STRING, - BASH_COMMAND - -i. FUNCNAME has been changed to support the debugger: it's now an array - variable. - -j. for, case, select, arithmetic commands now keep line number information - for the debugger. - -k. There is a new `RETURN' trap executed when a function or sourced script - returns (not inherited child processes; inherited by command substitution - if function tracing is enabled and the debugger is active). - -l. New invocation option: --debugger. Enables debugging and turns on new - `extdebug' shell option. - -m. New `functrace' and `errtrace' options to `set -o' cause DEBUG and ERR - traps, respectively, to be inherited by shell functions. Equivalent to - `set -T' and `set -E' respectively. The `functrace' option also controls - whether or not the DEBUG trap is inherited by sourced scripts. - -n. The DEBUG trap is run before binding the variable and running the action - list in a `for' command, binding the selection variable and running the - query in a `select' command, and before attempting a match in a `case' - command. - -o. New `--enable-debugger' option to `configure' to compile in the debugger - support code. - -p. `declare -F' now prints out extra line number and source file information - if the `extdebug' option is set. - -q. If `extdebug' is enabled, a non-zero return value from a DEBUG trap causes - the next command to be skipped, and a return value of 2 while in a - function or sourced script forces a `return'. - -r. New `caller' builtin to provide a call stack for the bash debugger. - -s. The DEBUG trap is run just before the first command in a function body is - executed, for the debugger. - -t. `for', `select', and `case' command heads are printed when `set -x' is - enabled. - -u. There is a new {x..y} brace expansion, which is shorthand for {x.x+1, - x+2,...,y}. x and y can be integers or single characters; the sequence - may ascend or descend; the increment is always 1. - -v. New ksh93-like ${!array[@]} expansion, expands to all the keys (indices) - of array. - -w. New `force_fignore' shopt option; if enabled, suffixes specified by - FIGNORE cause words to be ignored when performing word completion even - if they're the only possibilities. - -x. New `gnu_errfmt' shopt option; if enabled, error messages follow the `gnu - style' (filename:lineno:message) format. - -y. New `-o bashdefault' option to complete and compgen; if set, causes the - whole set of bash completions to be performed if the compspec doesn't - result in a match. - -z. New `-o plusdirs' option to complete and compgen; if set, causes directory - name completion to be performed and the results added to the rest of the - possible completions. - -aa. `kill' is available as a builtin even when the shell is built without - job control. - -bb. New HISTTIMEFORMAT variable; value is a format string to pass to - strftime(3). If set and not null, the `history' builtin prints out - timestamp information according to the specified format when displaying - history entries. If set, bash tells the history library to write out - timestamp information when the history file is written. - -cc. The [[ ... ]] command has a new binary `=~' operator that performs - extended regular expression (egrep-like) matching. - -dd. `configure' has a new `--enable-cond-regexp' option (enabled by default) - to enable the =~ operator and regexp matching in [[ ... ]]. - -ee. Subexpressions matched by the =~ operator are placed in the new - BASH_REMATCH array variable. - -ff. New `failglob' option that causes an expansion error when pathname - expansion fails to produce a match. - -gg. New `set -o pipefail' option that causes a pipeline to return a failure - status if any of the processes in the pipeline fail, not just the last - one. - -4. New Features in Readline - -a. History expansion has a new `a' modifier equivalent to the `g' modifier - for compatibility with the BSD csh. - -b. History expansion has a new `G' modifier equivalent to the BSD csh `g' - modifier, which performs a substitution once per word. - -c. All non-incremental search operations may now undo the operation of - replacing the current line with the history line. - -d. The text inserted by an `a' command in vi mode can be reinserted with - `.'. - -e. New bindable variable, `show-all-if-unmodified'. If set, the readline - completer will list possible completions immediately if there is more - than one completion and partial completion cannot be performed. - -f. There is a new application-callable `free_history_entry()' function. - -g. History list entries now contain timestamp information; the history file - functions know how to read and write timestamp information associated - with each entry. - -h. Four new key binding functions have been added: - - rl_bind_key_if_unbound() - rl_bind_key_if_unbound_in_map() - rl_bind_keyseq_if_unbound() - rl_bind_keyseq_if_unbound_in_map() - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.05b-release, -and the previous version, bash-2.05b-beta2. - -1. Changes to Bash - -a. Fixed an off-by-one error in the function that translates job - specifications. - -b. Note that we're running under Emacs and disable line editing if - $EMACS == `t'. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.05b-beta2, -and the previous version, bash-2.05b-beta1. - -1. Changes to Bash - -a. Fixed the /= and %= arithmetic operators to catch division by zero. - -b. Added putenv, setenv, unsetenv to getenv replacement for completeness. - -c. Fixed a bug that could cause the -O expand_aliases invocation option - to not take effect. - -d. Fixed a problem with process substitution that resulted in incorrect - behavior when the number of process substitutions in an individual - command approached 64. - -2. Changes to Readline - -a. Fixed a problem with backward-char-search when on a system with support - for multibyte characters when running in a locale without any multibyte - characters. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.05b-beta1, -and the previous version, bash-2.05b-alpha1. - -1. Changes to Bash - -a. Fixed a problem when parsing a POSIX.2 character class name while - evaluating a bracket expression containing multibyte characters. - -b. Changed the help text for `bind' to make it clear that any command - that may be placed in ~/.inputrc is a valid argument to `bind'. - -c. Added `help' builtin entries for `((', `[[', and arithmetic for. - -d. malloc updated again: - o slightly better overflow and underflow detection by putting the - chunk size at the beginning and end of the chunk and making - sure they match in free/realloc - o partial page allocated to make things page-aligned no longer - completely wasted - o block coalescing now enabled by default - o splitting and coalescing enabled for 32-byte chunks, the most - common size requested - o fixed a problem that resulted in spurious underflow messages and - aborts - o bin sizes are precomputed and stored in an array rather than - being computed at run time - o malloc will return memory blocks back to the system if the block - being freed is at the top of the heap and of sufficient size to - make it worthwhile - o malloc/free/realloc now inline memset instead of calling the - libc function; uses Duff's device for good performance - -e. Check for getservent(); make the service name completion code dependent - on its presence. - -f. Changed the readline callback that executes a command bound to a key - sequence to not save the executed command on the history list and to - save and restore the parsing state. - -g. Changes to lib/sh/snprintf.c: fixed some bugs in the `g' and `G' - floating point format display; implemented the "'" flag character - that turns on thousands' grouping; fixed behavior on systems where - MB_CUR_MAX does not evaluate to a constant. - -h. The `unset' builtin no longer returns a failure status when asked to - unset a previously-unset variable or function. - -i. Changes to the build system to make it easier to cross-compile bash - for different systems. - -j. Added `,' to the characters that are backslash-escaped during filename - completion, to avoid problems with complete-into-braces and RCS filenames - containing commas. - -k. Some changes to the multibyte character support code to avoid many calls - to strlen(). - -l. Bash now correctly honors setting LANG to some value when LC_ALL does not - already have a value. - -m. Fixed a bug that could cause SIGSEGV when processing nested traps with - trap handlers. - -n. The `source/.' builtin now restores the positional parameters when it - returns unless they were changed using the `set' builtin during the file's - execution. - -o. Fixed a bug that caused a syntax error when a command was terminated by - EOF. - -2. New Features in Bash - -a. There is now support for placing the long help text into separate files - installed into ${datadir}/bash. Not enabled by default; can be turned - on with `--enable-separate-helpfiles' option to configure. - -b. All builtins that take operands accept a `--' pseudo-option, except - `echo'. - -c. The `echo' builtin now accepts \0xxx (zero to three octal digits following - the `0') in addition to \xxx (one to three octal digits) for SUSv3/XPG6/ - POSIX.1-2001 compliance. - -3. Changes to Readline - -a. Fixed a small problem in _rl_insert_char with multibyte characters. - -b. Fixes from IBM for line wrapping problems when using multibyte characters. - -c. Fixed a problem which caused the display to be messed up when the last - line of a multi-line prompt (possibly containing invisible characters) - was longer than the screen width. - -d. Fixed a problem with the vi-mode `r' command that ocurred on systems with - support for multibyte characters when running in a locale without any - multibyte characters. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.05b-alpha1, -and the previous version, bash-2.05a-release. - -1. Changes to Bash - -a. Some changes to work around inlining differences between compilers. - -b. Added more prototypes for internal shell typedefs, to catch argument - passing errors when using pointers to functions. - -c. The `cd' builtin now fails in posix mode when a valid directory cannot be - constructed from a relative pathname argument and the $PWD using pathname - canonicalization, and the -P option has not been supplied. Previously, - the shell would attempt to use what the user typed, leading to weird - values for $PWD and discrepancies between the value of $PWD and the - actual working directory. - -d. The `cd' builtin now resets $PWD when canonicalization fails but a chdir - to the pathname passed as an argument succeeds (when not in posix mode). - -e. The `fc' builtin has been fixed, as POSIX requires, to use the closest - history position in range when given an out-of-range argument. - -f. The history file loading code was changed to allow lines to be saved in - the history list from the shell startup files. - -g. `history -s args' now works better in compound commands. - -h. The tilde expansion code was fixed to better recognize when it's being - invoked in an assignment context, which enables expansion after `=' - and `:'. - -i. Fixed the command name completion code so a slash is no longer appended - to a single match if there happens to be a directory with that name in - $PWD. - -j. Fixed compound array assignment to no longer perform alias expansion, to - allow reserved words as array members, and to not produce extra output - when the `-v' option had been enabled. - -k. Fixed the programmable completion code to better handle newlines in lists - of possible completions (e.g., `complete -W'). - -l. Removed the reserved words from the `bash-builtins' manual page. - -m. Parser error reporting now attempts to do a better job of identifying the - token in error rather than doing straight textual analysis. - -n. Fixes for Inf/NaN, locales, wide/multibyte characters and zero-length - arguments in the library snprintf(3) replacement. - -o. `read -e' no longer does command name completion on the first word on - the line being read. - -p. `select' now returns failure if the read of the user's selection fails. - -q. Fixed a bug that could cause a core dump when setting $PIPESTATUS. - -r. Fixes to not allocate so many job slots when the shell is running a loop - with job control enabled in a subshell of an interactive shell. - -s. Fixed a bug in the trap code that caused traps to be inherited by - command substitutions in some cases. - -t. Fixed a bug that could cause alias expansion to inappropriately expand - the word following the alias. - -u. Fixed a bug in the `kill' builtin that mishandled negative pid arguments. - -v. The parser is less lenient when parsing assignment statements where the - characters before the `=' don't comprise a valid identifier. - -w. The arithmetic expression evaluation code now honors the setting of the - `-u' option when expanding variable names. - -x. Fixed the arithmetic evaluation code to allow array subscripts to be - assigned (`let b[7]=42') and auto-incremented and auto-decremented - (e.g., b[7]++). - -y. Reimplemented the existing prompt string date and time expansions using - strftime(3), which changed the output of \@ in some locales. - -z. Fixed a bug that could cause a core dump when a special shell variable - (like RANDOM) was converted to an array with a variable assignment. - -aa. Fixed a bug that would reset the handler for a signal the user had - trapped to a function that would exit the shell when setting the exit - trap in a non-interactive shell. - -bb. Changed the execve(2) wrapper code to check whether or not a failing - command is a directory before looking at whether a `#!' interpreter - failed for some reason. - -cc. Fixed a bug in the command printing code so it no longer inserts a `;' - after a newline, which produces a syntax error when reused as input. - -dd. The code that expands $PS4 no longer inherits the `-x' flag. - -ee. The bash-specific completion functions may now take advantage of the - double-TAB and M-? features of the standard readline completion - functions. - -ff. The mail checking code no longer prints a message if the checked file's - size has not increased, even if the access time is less than the modification time. - -gg. Rewrote the variable symbol table code: there is now a stack of - contexts, each possibly including a separate symbol table; there can - be more than one temporary environment supplied to nested invocations - of `./source'; the temporary environments no longer require so much - special-case code; shell functions now handle the temporary environment - and local variables more consistently; function scope exit is faster now - that the entire symbol table does not have to be traversed to dispose of - local variables; it is now easier to push vars from the temporary - environment to the shell's variable table in posix mode; some duplicated - code has been removed. - -hh. Regularized the error message printing code; builtin_error is now called - more consistently, and common error message strings are handled by small - functions. This should make eventual message translation easier. - -ii. Error messages now include the line number in a script when the shell - is not interactive. - -jj. Array subscript expansion now takes place even when the array variable is - unset, so side effects will take place. - -kk. Fixed a bug in the SICGHLD child-reaping code so that it won't find - jobs already marked as terminated if the OS reuses pids quickly enough. - -ll. Fixed a bug that could cause a signal to not interrupt the `wait' - builtin while it was waiting for a background process to terminate. - -mm. A couple of changes to make it easier for multiple shells to share history - files using `history -n', `history -r', and `history -w'. - -nn. The `getopts' builtin always increments OPTIND to point to the next - option to be handled when an option is returned, whether it's valid - or not, as POSIX 1003.x-2001 requires. - -oo. Changed some parts of the expansion code to avoid allocating and - immediately freeing memory without using the results for anything. - -pp. The shell now keeps track of $IFS internally, updating its internal map - each time the variable is assigned a new value (or at local scope exit). - This saves thousands of hash lookups for IFS, which, while individually - cheap, add up. - -qq. Rewrote the hash table code: searching and insertion are much faster now, - and it uses a better string hashing function; augmented the function - interface to simplify other parts of the code and remove duplicated code - -rr. The shell now uses a simple, generic `object cache' for allocating and - caching words and word lists, which were the major users of - malloc/free. - -ss. Fixed the assignment statement parsing code to allow whitespace and - newlines in subscripts when performing array element assignment. - -tt. The shell now issues many fewer calls to sigprocmask and other signal - masking system calls. - -uu. Fixed the `test' and conditional command file comparison operators to - work right when one file has a non-positive timestamp and the other - does not exist. - -vv. Fixed some cases where the special characters '\001' and '\177' in the - values of variables or positional parameters caused incorrect expansion - results. - -2. Changes to Readline - -a. Fixed output of comment-begin character when listing variable values. - -b. Added some default key bindings for common escape sequences produced by - HOME and END keys. - -c. Fixed the mark handling code to be more emacs-compatible. - -d. A bug was fixed in the code that prints possible completions to keep it - from printing empty strings in certain circumstances. - -e. Change the key sequence printing code to print ESC as M\- if ESC is a - meta-prefix character -- it's easier for users to understand than \e. - -f. Fixed unstifle_history() to return values that match the documentation. - -g. Fixed the event loop (rl_event_hook) to handle the case where the input - file descriptor is invalidated. - -h. Fixed the prompt display code to work better when the application has a - custom redisplay function. - -i. Changes to make reading and writing the history file a little faster, and - to cope with huge history files without calling abort(3) from xmalloc. - -j. The vi-mode `S' and `s' commands are now undone correctly. - -3. New Features in Bash - -a. If set, TMOUT is the default timeout for the `read' builtin. - -b. `type' has two new options: `-f' suppresses shell function lookup, and - `-P' forces a $PATH search. - -c. New code to handle multibyte characters. - -d. `select' was changed to be more ksh-compatible, in that the menu is - reprinted each time through the loop only if REPLY is set to NULL. - The previous behavior is available as a compile-time option. - -e. `complete -d' and `complete -o dirnames' now force a slash to be - appended to names which are symlinks to directories. - -f. There is now a bindable edit-and-execute-command readline command, - like the vi-mode `v' command, bound to C-xC-e in emacs mode. - -g. Added support for ksh93-like [:word:] character class in pattern matching. - -h. The $'...' quoting construct now expands \cX to Control-X. - -i. A new \D{...} prompt expansion; passes the `...' to strftime and inserts - the result into the expanded prompt. - -j. The shell now performs arithmetic in the largest integer size the - machine supports (intmax_t), instead of long. - -k. If a numeric argument is supplied to one of the bash globbing completion - functions, a `*' is appended to the word before expansion is attempted. - -l. The bash globbing completion functions now allow completions to be listed - with double tabs or if `show-all-if-ambiguous' is set. - -m. New `-o nospace' option for `complete' and `compgen' builtins; suppresses - readline's appending a space to the completed word. - -n. 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). - -p. There is a new configuration option `--enable-mem-scramble', controls - bash malloc behavior of writing garbage characters into memory at - allocation and free time. - -q. The `complete' and `compgen' builtins now have a new `-s/-A service' - option to complete on names from /etc/services. - -r. `read' has a new `-u fd' option to read from a specified file descriptor. - -s. Fix the completion code so that expansion errors in a directory name - don't cause a longjmp back to the command loop. - -t. Fixed word completion inside command substitution to work a little more - intuitively. - -u. The `printf' %q format specifier now uses $'...' quoting to print the - argument if it contains non-printing characters. - -v. The `declare' and `typeset' builtins have a new `-t' option. When applied - to functions, it causes the DEBUG trap to be inherited by the named - function. Currently has no effect on variables. - -w. The DEBUG trap is now run *before* simple commands, ((...)) commands, - [[...]] conditional commands, and for ((...)) loops. - -x. 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. - -y. 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. Code - from Gary Vaughan. - -z. New [n]<&word- and [n]>&word- redirections from ksh93 -- move fds (dup - and close). - -aa. There is a new `-l' invocation option, equivalent to `--login'. - -bb. The `hash' builtin has a new `-l' option to list contents in a reusable - format, and a `-d' option to remove a name from the hash table. - -4. New Features in Readline - -a. Support for key `subsequences': allows, e.g., ESC and ESC-a to both - be bound to readline functions. Now the arrow keys may be used in vi - insert mode. - -b. When listing completions, and the number of lines displayed is more than - the screen length, readline uses an internal pager to display the results. - This is controlled by the `page-completions' variable (default on). - -c. New code to handle editing and displaying multibyte characters. - -d. The behavior introduced in bash-2.05a of deciding whether or not to - append a slash to a completed name that is a symlink to a directory has - been made optional, controlled by the `mark-symlinked-directories' - variable (default is the 2.05a behavior). - -e. The `insert-comment' command now acts as a toggle if given a numeric - argument: if the first characters on the line don't specify a - comment, insert one; if they do, delete the comment text - -f. New application-settable completion variable: - rl_completion_mark_symlink_dirs, allows an application's completion - function to temporarily override the user's preference for appending - slashes to names which are symlinks to directories. - -g. New function available to application completion functions: - rl_completion_mode, to tell how the completion function was invoked - and decide which argument to supply to rl_complete_internal (to list - completions, etc.). - -h. Readline now has an overwrite mode, toggled by the `overwrite-mode' - bindable command, which could be bound to `Insert'. - -i. New application-settable completion variable: - rl_completion_suppress_append, inhibits appending of - rl_completion_append_character to completed words. - -j. New key bindings when reading an incremental search string: ^W yanks - the currently-matched word out of the current line into the search - string; ^Y yanks the rest of the current line into the search string, - DEL or ^H deletes characters from the search string. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.05a-release, -and the previous version, bash-2.05a-rc1. - -1. Changes to Bash - -a. Fixed the `printf' builtin so that the variable name supplied as an - argument to a %n conversion must be a valid shell identifier. - -b. Improved the random number generator slightly. - -c. Changes to configuration to not put -I/usr/include into $CFLAGS, since - it messes up some includes. - -d. Corrected description of POSIXLY_CORRECT in man page and info manual. - -e. Fixed a couple of cases of incorrect function prototypes that sneaked - through and caused compilation problems. - -f. A few changes to avoid potential core dumps in the programmable completion - code. - -g. Fixed a configure problem that could cause a non-existent file to show - up in LIBOBJS. - -h. Fixed a configure problem that could cause siglist.o to not be built when - required. - -i. Changes to the strtoimax and strtoumax replacement functions to work - around buggy compilers. - -j. Fixed a problem with the snprintf replacement function that could - potentially cause a core dump. - -2. Changes to Readline - -a. Fixed a locale-specific problem in the vi-mode `goto mark' command. - -b. Fixed Makefile to not put -I/usr/include into CFLAGS, since it can cause - include file problems. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.05a-rc1, -and the previous version, bash-2.05a-beta1. - -1. Changes to Bash - -a. Fixed the snprintf replacement to correctly implement the `alternate form' - of the %g and %G conversions. - -b. Fixed snprintf to correctly handle the optional precision with the %g and - %G conversions. - -c. Fixed the arithmetic evaluation code to correct the values of `@' and `_' - when translating base-64 constants (they were backwards). - -d. New library functions for formatting long and long long ints. - -e. Fixed a few places where negative array subscripts could have occurred, - mostly as the result of systems using signed characters. - -f. Fixed a few places that assumed a pid_t was no wider than an int. - -g. Fixed the `maildir' mail checking code to work on systems where a - `struct stat' doesn't include an `st_blocks' member. - -h. Fixed snprintf to make `unsigned long long' conversion formats (%llu) - work better. - -i. Fixed snprintf to not print a sign when asked to do an unsigned conversion. - -j. Made configure changes to avoid compiling empty source files in lib/sh. - -k. New replacement functions (if necessary) for strtoull, strtoll, strtoimax, - strtoumax. - -l. The `printf' builtin now handles the `ll' and `j' length modifiers - directly, since they can affect the type and width of the argument - passed to printf(3). - -m. Renamed a number of the bash-specific autoconf macros in aclocal.m4 to - have more sytematic naming, with accompanying changes to configure.in. - -n. Fixed snprintf to handle long doubles and the %a/%A conversions by - falling back to sprintf, as long as sprintf supports them. - -o. Fixed return value from vsnprintf/snprintf to be the number of characters - that would have been printed, even if that number exceeds the buffer - size passed as an argument. - -p. Bash no longer attempts to define its own versions of some ctype macros - if they are implemented as functions in libc but not as macros in - . - -q. Changed the variable printing code (used by `set', `export', etc.) to - not use the $'...' syntax when in posix mode, since that caused - interoperability problems with other shells (most notably with autoconf). - When not in posix mode, it uses $'...' if the string to be printed - contains non-printing characters and regular single quotes otherwise. - -r. snprintf now recognizes the %F conversion. - -s. Fixed a bug that could cause the wrong status to be returned by a shell - function when the shell is compiled without job control and a null - command containing a command substutition was executed in the function. - -t. When in posix mode, the default value for MAILCHECK is 600. - -u. Bash only initializes FUNCNAME, GROUPS, and DIRSTACK as special variables - if they're not in the initial environment. - -v. If SECONDS appears in the initial environment with a valid integer value, - bash uses that as the starting value, as if an assignment had been - performed. - -w. Bash no longer auto-exports HOME, PATH, SHELL, or TERM, even though it - gives them default values if they don't appear in the initial environment. - -x. Bash no longer auto-exports HOSTNAME, HOSTTYPE, MACHTYPE, or OSTYPE, - even if it assigns them default values. - -y. Bash no longer removes the export attribute from SSH_CLIENT or SSH2_CLIENT - if they appear in the initial environment. - -z. Bash no longer attempts to discover if it's being run by sshd in order to - run the startup files. If the SSH_SOURCE_BASHRC is uncommented in - config-top.h it will attempt to do so as previously, but that's commented - out in the distributed version. - -aa. Fixed a typo in the code that tests for LC_NUMERIC. - -bb. The POSIXLY_CORRECT shell variable and its effects are now documented. - -cc. Some changes to several of the support shell scripts included in the - definitions to try to avoid race conditions and attacks. - -dd. Several changes to avoid warnings from `gcc -Wall'. - -ee. Fixed a problem with the `unset' builtin that could cause incorrect - results if asked to unset a variable and an array subscript in the - same command. - -ff. A few changes to the shell's temporary file creation code to avoid - potential file descriptor leaks and to prefer the system's idea of - the temporary directory to use. - -gg. Fixes to build with the C alloca in lib/malloc/alloca.c if the system - requires it but the shell has been configured --without-bash-malloc. - -hh. Updated the documentation to note that only interactive shells resend - SIGHUP to all jobs before exiting. - -ii. Fixes to only pass unquoted tilde words to tilde_expand, rather than - rely on tilde_expand or getpwnam(3) to handle the quotes (MacOS 10.x - will remove backslashes in any login name passed to getpwnam(3)). - -jj. Small change from Paul Eggert to make LINENO right in commands run with - `bash -c'. - -2. New Features in Bash - -a. The `printf' builtin now handles the %a and %A conversions if they're - implemented by printf(3). - -b. The `printf' builtin now handles the %F conversion (just about like %f). - -c. The `printf' builtin now handles the %n conversion like printf(3). The - corresponding argument is the name of a shell variable to which the - value is assigned. - -3. Changes to Readline - -a. Fixed a few places where negative array subscripts could have occurred. - -b. Fixed the vi-mode code to use a better method to determine the bounds of - the array used to hold the marks. - -c. Fixed the defines in chardefs.h to work better when chars are signed. - -d. Fixed configure.in to use the new names for bash autoconf macros. - -e. Readline no longer attempts to define its own versions of some ctype - macros if they are implemented as functions in libc but not as macros in - . - -f. Fixed a problem where rl_backward could possibly set point to before - the beginning of the line. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.05a-beta1, -and the previous version, bash-2.05a-alpha1. - -1. Changes to Bash - -a. Fixed a bug in the evalution of arithmetic `for' statements when the - expanded expression is NULL. - -b. Fixed an unassigned variable problem in the redirection printing code. - -c. Added more prototypes to extern function declarations in the header - files and to static function declarations in C source files. - -d. Make sure called functions have a prototype in scope, to get the arguments - and return values right instead of casting. Removed extern function - declarations from C source files that were already included in header - files. - -e. Changed some function arguments to use function typedefs in general.h so - the prototypes can be checked. The only use of Function and VFunction - now is for unwind-protects. - -f. More const changes to function arguments and appropriate variables. - -g. Changed the mail checking support to handle `maildir'-style mail - directories. - -h. Augmented the bash malloc to pass in the file and line number information - for each malloc, realloc, and free. This should result in better error - messages. - -i. The `old' gnu malloc is no longer a configuration option. - -j. Augmented the bash malloc with optional tracing and registering allocated - and freed memory. - -k. Prompt string decoding now saves and restores the value of $? when it - expands the prompt string, so command substitutions don't change $?. - -i. Array indices are now `long', since shell arithmetic is performed as long, - and the internal arrayind_t type is used consistently. - -j. Some more `unsigned char *' fixes from Paul Eggert. - -k. Fixed a bad call to builtin_error that could cause core dumps when making - local variables. - -l. `return' may no longer be used to terminate a `select' command, for - compatibility with ksh. - -m. Changed code that reads octal numbers to do a better job of detecting - overflows. - -n. The time formatting code no longer uses absolute indices into a buffer, - because the buffer size changes depending on the size of a `time_t'. - -o. `umask' now prints four digits when printing in octal mode, for - compatibility with other shells. - -p. Lots of changes to the `printf' builtin from Paul Eggert: it handles `L' - formats and long doubles better, and internal functions have been - simpified where appropriate. - -q. Some `time_t' fixes for machines were a time_t is bigger than a long. - -r. Replaced some bash-specific autoconf macros with standard equivalents. - -s. Improvmed the code that constructs temporary filenames to make the - generated names a bit more random. - -t. Added code that checks for ascii before calling any of the is* ctype - functions. - -u. Changed some places where a `char' was used as an array subscript to use - `unsigned char', since a `char' can be negative if it's signed by default. - -v. Lots of changes to the `ulimit' builtin from Paul Eggert to add support - for the new POSIX-200x RLIM_SAVED_CUR and RLIM_SAVED_MAX values and - simplify the code. - -w. `ulimit' now prints the description of a resource in any error message - relating to fetching or setting that resource's limits. - -x. The `snprintf' replacement now computes maximum values at compile - time rather than using huge constants for things like long long. - -y. Interactive shells now ignore `set -n'. - -z. Changed the malloc bookkeeping information so that it's now 8 bytes - instead of 12 on most 32-bit machines (saving 4 bytes per allocation), - restoring 8-byte alignment. - -aa. The malloc error reporting code now attempts to print the file and line - number of the call that caused the error. - -bb. Changed the redirection error reporting code to catch EBADF errors and - report the file descriptor number rather than the file being redirected - to or from (e.g., things like `exec 4242&word' redirection now works in POSIX mode as it does by default, - since POSIX.2 leaves it unspecified. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.05-beta2, -and the previous version, bash-2.05-beta1. - -1. Changes to Bash - -a. Fixed a bug in the arithmetic evaluation code so that a^=b is supported. - -b. Fixed startup so posixly_correct is retained across subshells begun to - execute scripts without a leading `#!'. - -c. Fixed a bug that caused $(< file) to not work in a (...) subshell. - -d. Added config support for Linux running on the IBM S390. - -e. Fixed a bug that caused bash to get its input pointer out of sync when - reading commands through a pipe and running a command with standard - input redirected from a file. - -f. Made a change so that command completion now makes about half as many - stat(2) calls when searching the $PATH. - -g. Fixed a bug that caused variable assignments preceding `return' to not - be propagated to the shell environment in POSIX mode. - -h. Fixed a bug with ${parameter[:]?word} -- tilde expansion was not performed - on `word'. - -i. In POSIX mode, `break' and `continue' do not complain and return success - if called when the shell is not executing a loop. - -j. Fixed `bash -o posix' to work the same as `bash --posix'. - -k. Fixed a bug where variable assignments preceding `eval' or `source/.' - would not show up in the environment exported to subshells run by the - commands. - -l. In POSIX mode, shells started to execute command substitutions inherit - the value of the `-e' option from their parent shell. - -m. In POSIX mode, aliases are expanded even in non-interactive shells. - -n. Changed some of the job control messages to display the text required by - POSIX.2 when the shell is in POSIX mode. - -o. Fixed a bug in `test' that caused it to occasionally return incorrect - results when non-numeric arguments were supplied to `-t'. - -2. Changes to Readline - -a. Some changes were made to avoid gcc warnings with -Wall. - -b. rl_get_keymap_by_name now finds keymaps case-insensitively, so - `set keymap EMACS' works. - -c. The history file writing and truncation functions now return a useful - status on error. - -d. Fixed a bug that could cause applications to dereference a NULL pointer - if a NULL second argument was passed to history_expand(). - -3. New Features in Bash - -a. doc/readline.3 has been moved to the readline distribution. - -4. New Features in Readline - -a. New function, rl_get_screen_size (int *rows, int *columns), returns - readline's idea of the screen dimensions. - -b. The timeout in rl_gather_tyi (readline keyboard input polling function) - is now settable via a function (rl_set_keyboard_input_timeout()). - -c. Renamed the max_input_history variable to history_max_entries; the old - variable is maintained for backwards compatibility. - -d. The list of characters that separate words for the history tokenizer is - now settable with a variable: history_word_delimiters. The default - value is as before. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.05-beta1, -and the previous version, bash-2.05-alpha1. - -1. Changes to Bash - -a. Changes to allow shared library and object building on the GNU Hurd. - -b. Fixes to the way exported functions are placed into the environment and - cached. - -c. The globbing library once again respects locales when processing ranges - in bracket expressions while doing pattern matching. - -d. System-specific configuration changes for: Tru 64, Interix - -e. Bashbug now uses /usr/bin/editor as one of the editing alternatives, and - will use mktemp(1) or tempfile(1), if present, for temporary file creation. - -f. Bash no longer performs a binary file check on a script argument that's - really a tty (like /dev/fd/0 or /dev/stdin). - -g. Fixed a bug in the execution of shell scripts that caused the effects of - $BASH_ENV to be undone in some cases. - -h. Fixed several bugs that made `bash [-i] /dev/stdin' not work correctly. - -i. Several changes to the job control code to avoid some signal state - manipulation. - -j. The Bash malloc no longer blocks signals as often, which should make it - faster. - -k. Fixed a parsing bug that did not allow backslash to escape a single quote - inside a $'...' construct. - -l. Fixed a bug that caused things like ${var:=$'value'} to be parsed - incorrectly. This showed up in newer versions of autoconf. - -m. Fixed a bug in the bash-specific readline initialization that caused - key bindings to bash-specific function names appearing in .inputrc to - not be honored. - -n. Bash now sets the file descriptor it uses to save the file descriptor - opened on a shell script to close on exec. - -o. Fixed a bug in the prompt string decoding that caused it to misbehave - when presented an octal sequence of fewer than three characters. - -p. Fixed the `test' builtin to return an error if `[' is supplied a single - argument that is not `]'. - -q. Fixed a bug that caused subshells started to run executable shell scripts - without a leading `#!' to incorrectly inherit an argument list preceding - a shell builtin (like such a script called from a script sourced with `.', - where there were variable assignments preceding the `.' command) - -r. Fixed a bug that caused changes to variables supplied in an assignment - statement preceding a shell builtin to not be honored (like a script - run with `.'). - -s. HOSTTYPE, OSTYPE, and MACHTYPE are set only if they do not have values - when the shell is started. - -t. Fixed a bug that caused SIGINT to kill shell scripts after the script - called `wait'. - -u. The `fc' builtin now tries to create its temporary files in the directory - named by $TMPDIR. - -v. Bash no longer calls any Readline functions or uses any Readline variables - not declared in readline.h. - -w. Fixed a bug that caused some substitutions involving $@ to not be split - correctly, especially expansions of the form ${paramterOPword}. - -x. SSH2_CLIENT is now treated like SSH_CLIENT and not auto-exported if it - appears in the initial environment. - -y. Fixed a couple of problems with shell scripts without a leading `#!' - being executed out of shell functions that could cause core dumps if - such a script attempted to execute `return'. - -z. Fixed a problem with the `-nt' and `-ot' binary operators for the - `test/[' builtin and the `[[' conditional command that caused wrong - return values if one of the file arguments did not exist. - -aa. Fixed a bug that caused non-interactive shells which had previously - executed `shopt -s expand_aliases' to fail to expand aliases in a - command like `(command) &'. - -2. Changes to Readline - -a. Changes to make most (but not yet all -- there is still crlf()) of the - exported readline functions declared in readline.h have an rl_ prefix. - -b. More `const' changes in function arguments, mostly for completion - functions. - -c. Fixed a bug in rl_forward that could cause the point to be set to before - the beginning of the line in vi mode. - -d. Fixed a bug in the callback read-char interface to make it work when a - readline function pushes some input onto the input stream with - rl_execute_next (like the incremental search functions). - -e. Fixed a file descriptor leak in the history file manipulation code that - was tripped when attempting to truncate a non-regular file (like - /dev/null). - -f. Some existing variables are now documented and part of the public - interface (declared in readline.h): rl_explict_arg, rl_numeric_arg, - rl_editing_mode, rl_last_func. - -g. Renamed rltty_set_default_bindings to rl_tty_set_default_bindings and - crlf to rl_crlf, so there are no public functions declared in readline.h - without an `rl_' prefix. The old functions still exist for backwards - compatibility. - -3. New Features in Bash - -a. A new loadable builtin, realpath, which canonicalizes and expands symlinks - in pathname arguments. - -b. 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. - -4. New Features in Readline - -a. New application-callable function rl_set_prompt(const char *prompt): - expands its prompt string argument and sets rl_prompt to the result. - -b. New application-callable function rl_set_screen_size(int rows, int cols): - public method for applications to set readline's idea of the screen - dimensions. - -c. The history example program (examples/histexamp.c) is now built as one - of the examples. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.05-alpha1, -and the previous version, bash-2.04-release. - -1. Changes to Bash - -a. A fix was made to allow newlines in compond array assignments. - -b. configure now checks for real-time signals with unusable values. - -c. Interactive shells no longer exit if a substitution fails because of an - unset variable within a sourced file. - -d. Fixed a problem with incorrect matching of extended glob patterns when - doing pattern substitution. - -e. `{' is now quoted by the completion code when it appears in a filename. - -f. Fixed an error in pattern matching that caused the matcher to not - correctly skip the rest of a bracket expression after a character - matched. - -g. Fixed a bug in the IFS word splitting code to make a non-whitespace IFS - character preceded by IFS whitespace part of the current delimiter rather - than generating a separate field. - -h. The {!prefix@} expansion now generates separate words, analogous to $@, - when double-quoted. - -i. Command substitution now ignores NUL bytes in the command output, and the - parser ignores them on input. - -j. A fix was made to the job control code to prevent hanging processes when - the shell thinks background processes are running but the kernel returns - -1/ECHILD from waitpid(). - -k. `pwd' now prints an error message if the write fails when displaying the - current directory. - -l. When in POSIX mode, the shell prints trap dispostions without a leading - `SIG' in the signal specification. - -m. Fixed a parser bug that caused the current command's line count to be - messed up by a compound array assignment. - -n. Fixed a bug in the unwind-protect code that caused bad behavior on machines - where ints and pointers are not the same size. - -o. System-specific configure changes for: MacOS X. - -p. Changes for Cygwin to translate \r\n and \r to \n and to set file - descriptors used for reading input to text mode in various places. - -q. Fixed a bug that caused `!' to occasionally not be honored when in - a (...) subshell. - -r. Bash no longer assumes that getcwd() will return any useful error message - in the buffer passed as an argument if the call fails. - -s. The `source', `.', and `fc' builtins no longer check whether a file is - binary before reading commands from it. - -t. Subshells no longer turn off job control when they exit, since that - sometimes resulted in the terminal being reset to the wrong process - group. - -u. The history code no longer tries to save the second and subsequent lines - of a multi-line command if the first line was not saved. - -v. The history saving code now does a better job of saving blank lines in a - multi-line command. - -w. Removed a `feature' that made `ulimit' silently translate `unlimited' to - the current hard limit, which obscured some kernel error returns. - -x. Fixed the grammar so that `}' is recognized as a reserved word after - another reserved word, rather than requiring a `;' or newline. This - means that constructs like - - { { echo a b c ; } } - - work as expected. - -y. Conditional commands ([[...]]) now perform tilde expansion on their - arguments. - -z. Noted in the documentation that `set -a' will cause functions to be - exported if they are defined after `set -a' is executed. - -aa. When an interactive login shell starts, if $PWD and $HOME refer to the - same directory but are not the same string, $PWD is set to $HOME. - -bb. Fixed `printf' to handle invalid floating point numbers better. - -cc. Temporary files are now created with random filenames, to improve security. - -dd. The readline initialization code now binds the custom bash functions and - key bindings after the readline defaults are set up. - -ee. Fixed the `source' builtin to no longer overwrite a shell function's - argument list, even if the sourced file changes the positional parameters. - -ff. A bug fix was made in the expansion of `$*' in contexts where it should - not be split, like assignment statements. - -gg. Fixed a bug in the parameter substring expansion to handle conditional - arithmetic expressions ( exp ? val1 : val2 ) without cutting the expression - off at the wrong `:'. - -hh. The `<>' redirection is no longer subject to the current setting of - `noclobber', as POSIX.2 specifies. - -ii. Fixed a bug in the conditional command parsing code that caused expressions - in parentheses to occasionally be parsed incorrectly. - -jj. Fixed a bug in the ((...)) arithmetic command to allow do...done or - {...} to follow the )) without an intervening list terminator. - -kk. `printf' now treats `\E' the same as `\e' when performing backslash escape - expansion for the `%b' format specifier. - -ll. When in POSIX mode, the shell no longer searches the current directory for - a file to be sourced with `.' or `source' if `.' is not in $PATH. - -mm. Interactive comments are no longer turned off when POSIX mode is disabled. - -nn. The UID, EUID, HOSTNAME variables are not set if they are in the shell's - environment when it starts up. - -oo. Fixed a bug in the `command' builtin so the effect of a command like - `command exec 4(...) - expansions to defer removal until after any current shell function has - finished executing. - -f. Fixed a bug in `select' which caused it to not handle the `continue' - builtin correctly. - -g. Autoconf tests added for cygwin32 and mingw32. - -2. New Features in Bash - -a. The `--with-bash-malloc' configure option replaces `--with-gnu-malloc' - (which is still there for backwards compatibility). - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.04-beta1, -and the previous version, bash-2.04-alpha1. - -1. Changes to Bash - -a. Fixed a bug in the programmable completion code that occurred when - trying to complete command lines containing a `;' or `@'. - -b. The file descriptor from which the shell is reading a script is now - moved to a file descriptor above the user-addressible range. - -c. Changes to `printf' so that it can handle integers beginning with 0 - or 0x as octal and hex, respectively. - -d. Fixes to the programmable completion code so it handles nonsense like - `compgen -C xyz' gracefully. - -e. The shell no longer modifies the signal handler for SIGPROF, allowing - profiling again on certain systems. - -f. The shell checks for a new window size, if the user has requested it, - after a process exits due to a signal. - -g. Fixed a bug with variables with null values in a program's temporary - environment and the bash getenv() replacement. - -h. `declare' and the other builtins that take variable assignments as - arguments now honor `set -a' and mark modified variables for export. - -i. Some changes were made for --dump-po-strings mode when writing strings - with embedded newlines. - -j. The code that caches export strings from the initial environment now - duplicates the string rather than just pointing into the environment. - -k. The filename completion quoting code now uses single quotes by default - if the filename being completed contains newlines, since \ - has a special meaning to the parser. - -l. Bash now uses typedefs bits32_t and u_bits32_t instead of int32_t and - u_int32_t, respectively to avoid conflicts on certain Unix versions. - -m. Configuration changes were made for: Rhapsody, Mac OS, FreeBSD-3.x. - -n. Fixed a problem with hostname-to-ip-address translation in the - /dev/(tcp|udp)/hostname/port redirection code. - -o. The texinfo manual has been reorganized slightly. - -p. Filename generation (globbing) range comparisons in bracket expressions - no longer use strcoll(3) even if it is available, since it has unwanted - effects in certain locales. - -q. Fixed a cosmetic problem in the source that caused the shell to not - compile if DPAREN_ARITHMETIC was not defined but ARITH_FOR_COMMAND was. - -r. Fixed a bug in the here-document code tripped when the file descriptor - opened to the file containing the text of the here document was the - same as a redirector specified by the user. - -s. Fixed a bug where the INVERT_RETURN flag was not being set for `pipeline' - in `time ! pipeline'. - -t. Fixed a bug with the `wait' builtin which manifested itself when an - interrupt was received while the shell was waiting for asynchronous - processes in a shell script. - -u. Fixed the DEBUG trap code so that it has the correct value of $?. - -v. Fixed a bug in the parameter pattern substitution code that could cause - the shell to attempt to free unallocated memory if the pattern started - with `/' and an expansion error occurs. - -w. Fixed a bug in the positional parameter substring code that could - cause the shell to loop freeing freed memory. - -x. Fixed a bug in the positional parameter pattern substitution code so - that it correctly handles null replacement strings with a pattern - string prefixed with `%' or `#'. - -y. The shell no longer attempts to import functions from the environment if - started with `-n'. - -z. Fixed a bug that caused `return' in a command substitution executed in - a shell function to return from the function in a subshell and continue - execution. - -aa. `hash -p /pathname/with/slashes name' is no longer allowed when the shell - is restricted. - -bb. The wait* job control functions now behave better if called when there - are no unwaited-for children. - -cc. Command substitution no longer unconditionally disables job control in - the subshell started to run the command. - -dd. A bug was fixed that occasionally caused traps to mess up the parser - state. - -ee. `bashbug' now honors user headers in the mail message it sends. - -ff. A bug was fixed that caused the `:p' history modifier to not print the - history expansion if the `histverify' option was set. - -2. Changes to Readline - -a. Fixed a bug in the redisplay code for lines with more than 256 line - breaks. - -b. A bug was fixed which caused invisible character markers to not be - stripped from the prompt string if the terminal was in no-echo mode. - -c. Readline no longer tries to get the variables it needs for redisplay - from the termcap entry if the calling application has specified its - own redisplay function. Readline treats the terminal as `dumb' in - this case. - -d. Fixes to the SIGWINCH code so that a multiple-line prompt with escape - sequences is redrawn correctly. - -3. New Features in Bash - -a. `bashbug' now accepts `--help' and `--version' options. - -b. There is a new `xpg_echo' option to `shopt' that controls the behavior - of echo with respect to backslash-escaped characters at runtime. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.04-alpha1, -and the previous version, bash-2.04-devel. - -1. Changes to Bash - -a. Fixed a bug that could cause core dumps when performing substring - expansion. - -b. Shared object configuration changes for: Solaris, OSF/1 - -c. The POSIX_GLOB_LIBRARY code that uses the POSIX.2 globbing facilities - for pathname expansion now understands GLOBIGNORE. - -d. The code that implements `eval' was changed to save the value of the - current prompt, so an eval in a shell function called by the programmable - completion code will not change the prompt to $PS2. - -e. Restored the undocumented NON_INTERACTIVE_LOGIN_SHELLS #define to - config-top.h. If this is defined, all login shells will read the - startup files, not just interactive and non-interactive started with - the `--login' option. - -f. Fixed a bug that caused the expansion code to occasionally dump core if - IFS contained characters > 128. - -g. Fixed a problem with the grammar so that a newline is not required - after the `))' in the new-style arithmetic for statement; a semicolon - may be used as expected. - -h. Variable indirection may now reference the shell's special variables. - -i. The $'...' and $"..." constructs are now added to the history correctly - if they contain newlines and command-oriented history is enabled. - -j. It is now an error to try to assign a value to a function-local copy - of a readonly shell variable (declared with the `local' builtin). - -2. Changes to Readline - -a. The history file code now uses O_BINARY mode when reading and writing - the history file on cygwin32. - -3. New Features in Bash - -a. A new programmable completion facility, with two new builtin commands: - complete and compgen. - -b. configure has a new option, `--enable-progcomp', to compile in the - programmable completion features (enabled by default). - -c. `shopt' has a new option, `progcomp', to enable and disable programmable - completion at runtime. - -d. Unsetting HOSTFILE now clears the list of hostnames used for completion. - -4. New Features in Readline - -a. A new variable, rl_gnu_readline_p, always 1. The intent is that an - application can verify whether or not it is linked with the `real' - readline library or some substitute. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.04-devel, -and the previous version, bash-2.03-release. - -1. Changes to Bash - -a. System-specific configuration and source changes for: Interix, Rhapsody - -b. Fixed a bug in execute_cmd.c that resulted in a compile-time error if - JOB_CONTROL was not defined. - -c. An obscure race condition in the trap code was fixed. - -d. The string resulting from $'...' is now requoted to avoid any further - expansion. - -e. The $'...' quoting syntax now allows backslash to escape a single quote, - for ksh-93 compatibility. - -f. The $"..." quoting syntax now escapes backslashes and double quotes in - the translated string when displaying them with the --dump-po-strings - option. - -g. `echo -e' no longer converts \' to '. - -h. Fixes were made to the extended globbing code to handle embedded (...) - patterns better. - -i. Some improvements were made to the code that unsets `nodelay' mode on - the file descriptor from which bash is reading input. - -j. Some changes were made to the replacement termcap library for better - operation on MS-DOS. - -k. Some changes were made to the tilde expansion code to handle backslash - as a pathname separator on MS-DOS. - -l. The source has been reorganized a little bit -- there is now an `include' - subdirectory, and lib/posixheaders has been removed. - -m. Improvements were made to the `read' builtin so that it makes many - fewer read(2) system calls. - -n. The expansion of $- will include `c' and `s' when those options are - supplied at shell invocation. - -o. Several improvments were made to the completion code: variable completion - now works better when there are unterminated expansions, command - completion understands quotes better, and completion now works in certain - unclosed $(... constructs. - -p. The arithmetic expansion code was fixed to not need the value of a - variable being assigned a value (fixes the "ss=09; let ss=10" bug). - -q. Some changes were made to make exported environment creation faster. - -r. The html documentation will be installed into $(htmldir) if that variable - has a value when `make install' is run. - -s. Fixed a bug that would cause the bashrc file to be sourced inappropriately - when bash is started by sshd. - -t. The SSH_CLIENT environment variable is no longer auto-exported. - -u. A bug that caused redirections with (...) subshells to be performed in - the wrong order was fixed. - -v. A bug that occasionally caused inappropriate expansion of assignment - statements in compound array assignments was fixed. - -w. The code that parses the words in a compound array assignment was - simplified considerably and should work better now. - -x. Fixes to the non-job-control code in nojobs.c to make it POSIX.2-compliant - when a user attempts to retrieve the status of a terminated background - process. - -y. Fixes to the `printf' builtin so that it doesn't try to expand all - backslash escape sequences in the format string before parsing it for - % format specifiers. - -2. Changes to Readline - -a. The history library tries to truncate the history file only if it is a - regular file. - -b. A bug that caused _rl_dispatch to address negative array indices on - systems with signed chars was fixed. - -c. rl-yank-nth-arg now leaves the history position the same as when it was - called. - -d. Changes to the completion code to handle MS-DOS drive-letter:pathname - filenames. - -e. Completion is now case-insensitive by default on MS-DOS. - -f. Fixes to the history file manipulation code for MS-DOS. - -g. Readline attempts to bind the arrow keys to appropriate defaults on MS-DOS. - -h. Some fixes were made to the redisplay code for better operation on MS-DOS. - -i. The quoted-insert code will now insert tty special chars like ^C. - -j. A bug was fixed that caused the display code to reference memory before - the start of the prompt string. - -k. More support for __EMX__ (OS/2). - -l. A bug was fixed in readline's signal handling that could cause infinite - recursion in signal handlers. - -m. A bug was fixed that caused the point to be less than zero when rl_forward - was given a very large numeric argument. - -n. The vi-mode code now gets characters via the application-settable value - of rl_getc_function rather than calling rl_getc directly. - -3. New Features in Bash - -a. The history builtin has a `-d offset' option to delete the history entry - at position `offset'. - -b. The prompt expansion code has two new escape sequences: \j, the number of - active jobs; and \l, the basename of the shell's tty device name. - -c. The `bind' builtin has a new `-x' option to bind key sequences to shell - commands. - -d. There is a new shell option, no_empty_command_completion, which, when - enabled, disables command completion when TAB is typed on an empty line. - -e. The `help' builtin has a `-s' option to just print a builtin's usage - synopsys. - -f. There are several new arithmetic operators: id++, id-- (variable - post-increment/decrement), ++id, --id (variabl pre-increment/decrement), - expr1 , expr2 (comma operator). - -g. There is a new ksh-93 style arithmetic for command: - for ((expr1 ; expr2; expr3 )); do list; done - -h. The `read' builtin has a number of new options: - -t timeout only wait timeout seconds for input - -n nchars only read nchars from input instead of a full line - -d delim read until delim rather than newline - -s don't echo input chars as they are read - -i. The redirection code now handles several filenames specially: - /dev/fd/N, /dev/stdin, /dev/stdout, and /dev/stderr, whether or - not they are present in the file system. - -j. The redirection code now recognizes pathnames of the form - /dev/tcp/host/port and /dev/udp/host/port, and tries to open a socket - of the appropriate type to the specified port on the specified host. - -k. The ksh-93 ${!prefix*} expansion, which expands to the names of all - shell variables whose names start with prefix, has been implemented. - -l. There is a new dynamic variable, FUNCNAME, which expands to the name of - a currently-executing function. Assignments to FUNCNAME have no effect. - -m. The GROUPS variable is no longer readonly; assignments to it are silently - discarded. This means it can be unset. - -4. New Features in Readline - -a. Parentheses matching is now always compiled into readline, and enabled - or disabled when the value of the `blink-matching-paren' variable is - changed. - -b. MS-DOS systems now use ~/_inputrc as the last-ditch inputrc filename. - -c. MS-DOS systems now use ~/_history as the default history file. - -d. history-search-{forward,backward} now leave the point at the end of the - line when the string to search for is empty, like - {reverse,forward}-search-history. - -e. history-search-{forward,backward} now leave the last history line found - in the readline buffer if the second or subsequent search fails. - -f. New function for use by applications: rl_on_new_line_with_prompt, used - when an application displays the prompt itself before calling readline(). - -g. New variable for use by applications: rl_already_prompted. An application - that displays the prompt itself before calling readline() must set this to - a non-zero value. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.03-release, -and the previous version, bash-2.03-beta2. - -1. Changes to Bash - -a. A file descriptor leak in the `fc' builtin was fixed. - -b. A bug was fixed in the `read' builtin that caused occasional spurious - failures when using `read -e'. - -c. The version code needed to use the value of the cpp variable - CONF_MACHTYPE rather than MACHTYPE. - -d. A new test was added to exercise the command printing and copying code. - -e. A bug was fixed that caused `time' to be recognized as a reserved word - if it was the first pattern in a `case' statement pattern list. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.03-beta2, -and the previous version, bash-2.03-beta1. - -1. Changes to Bash - -a. Slight additions to support/shobj-conf, mostly for the benefit of AIX 4.2. - -b. config.{guess,sub} support added for the NEC SX4. - -c. Changed some of the cross-compiling sections of the configure macros in - aclocal.m4 so that configure won't abort. - -d. Slight changes to how the HTML versions of the bash and readline manuals - are generated. - -e. Fixed conditional command printing to avoid interpreting printf `%'-escapes - in arguments to [[. - -f. Don't include the bash malloc on all variants of the alpha processor. - -g. Changes to configure to make --enable-profiling work on Solaris 2.x. - -h. Fixed a bug that manifested itself when shell functions were called - between calls to `getopts'. - -i. Fixed pattern substitution so that a bare `#'as a pattern causes the - replacement string to be prefixed to the search string, and a bare - `%' causes the replacement string to be appended to the search string. - -j. Fixed a bug in the command execution code that caused child processes - to occasionally have the wrong value for $!. - -2. Changes to Readline - -a. Added code to the history library to catch history substitutions using - `&' without a previous history substitution or search having been - performed. - -3. New Features in Bash - -4. New Features in Readline - -a. New bindable variable: `isearch-terminators'. - -b. New bindable function: `forward-backward-delete-char' (unbound by default). - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.03-beta1, -and the previous version, bash-2.03-alpha. - -1. Changes to Bash - -a. A change was made to the help text for `{...}' to make it clear that a - semicolon is required before the closing brace. - -b. A fix was made to the `test' builtin so that syntax errors cause test - to return an exit status > 1. - -c. Globbing is no longer performed on assignment statements that appear as - arguments to `assignment builtins' such as `export'. - -d. System-specific configuration changes were made for: Rhapsody, - AIX 4.2/gcc, BSD/OS 4.0. - -e. New loadable builtins: ln, unlink. - -f. Some fixes were made to the globbing code to handle extended glob patterns - which immediately follow a `*'. - -g. A fix was made to the command printing code to ensure that redirections - following compound commands have a space separating them from the rest - of the command. - -h. The pathname canonicalization code was changed to produce fewer leading - `//' sequences, since those are interpreted as network file system - pathnames on some systems. - -i. A fix was made so that loops containing `eval' commands in commands passed - to `bash -c' would not exit prematurely. - -j. Some changes were made to the job reaping code when the shell is not - interactive, so the shell will retain exit statuses longer for examination - by `wait'. - -k. A fix was made so that `jobs | command' works again. - -l. The erroneous compound array assignment var=((...)) is now a syntax error. - -m. A change was made to the dynamic loading code in `enable' to support - Tenon's MachTen. - -n. A fix was made to the globbing code so that extended globbing patterns - will correctly match `.' in a bracket expression. - -2. Changes to Readline - -a. A fix was made to the completion code in which a typo caused the wrong - value to be passed to the function that computed the longest common - prefix of the list of matches. - -b. The completion code now checks the value of rl_filename_completion_desired, - which is set by application-supplied completion functions to indicate - that filename completion is being performed, to decide whether or not to - call an application-supplied `ignore completions' function. - -3. New Features in Bash - -a. A change was made to the startup file code so that any shell begun with - the `--login' option, even non-interactive shells, will source the login - shell startup files. - -4. New Features in Readline - -a. A new variable, rl_erase_empty_line, which, if set by an application using - readline, will cause readline to erase, prompt and all, lines on which the - only thing typed was a newline. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.03-alpha, -and the previous version, bash-2.02.1-release. - -1. Changes to Bash - -a. System-specific configuration changes were made for: Irix 6.x, Unixware 7. - -b. The texi2dvi and texi2html scripts were updated to the latest versions - from the net. - -c. The configure tests that determine which native type is 32 bits were - changed to not require a compiled program. - -d. Fixed a bug in shell_execve that could cause memory to be freed twice - after a failed exec. - -e. The `printf' test uses `diff -a' if it's available to prevent confusion - due to the non-ascii output. - -f. Shared object configuration is now performed by a shell script, - support/shobj-conf, which generates values to be substituted into - makefiles by configure. - -g. Some changes were made to `ulimit' to avoid the use of RLIM_INVALID as a - return value. - -h. Changes were made to `ulimit' to work around HPUX 9.x's peculiar - handling of RLIMIT_FILESIZE. - -i. Some new loadable builtins were added: id, printenv, sync, whoami, push, - mkdir. `pushd', `popd', and `dirs' can now be built as regular or - loadable builtins from the same source file. - -j. Changes were made to `printf' to handle NUL bytes in the expanded format - string. - -k. The various `make clean' Makefile targets now descend into lib/sh. - -l. The `type' builtin was changed to use the internal `getopt' so that things - like `type -ap' work as expected. - -m. There is a new configuration option, --with-installed-readline, to link - bash with a locally-installed version of readline. Only readline version - 4.0 and later releases can support this. Shared and static libraries - are supported. The installed include files are used. - -n. There is a new autoconf macro used to find which basic type is 64 bits. - -o. Dynamic linking and loadable builtins should now work on SCO 3.2v5*, - AIX 4.2 with gcc, Unixware 7, and many other systems using gcc, where - the `-shared' options works correctly. - -p. A bug was fixed in the bash filename completion code that caused memory to - be freed twice if a directory name containing an unset variable was - completed and the -u option was set. - -q. The prompt expansion code now quotes the `$' in the `\$' expansion so it - is not processed by subsequent parameter expansion. - -r. Fixed a parsing bug that caused a single or double quote after a `$$' to - trigger ANSI C expansion or locale translation. - -s. Fixed a bug in the globbing code that caused quoted filenames containing - no globbing characters to sometimes be incorrectly expanded. - -t. Changes to the default prompt strings if prompt string decoding is not - compiled into the shell. - -u. Added `do', `then', `else', `{', and `(' to the list of keywords that may - precede the `time' reserved word. - -v. The shell may now be cross-built for BeOS as well as cygwin32. - -w. The conditional command execution code now treats `=' the same as `==' - for deciding when to perform pattern matching. - -x. The `-e' option no longer causes the shell to exit if a command exits - with a non-zero status while running the startup files. - -y. The `printf' builtin no longer dumps core if a modifier is supplied in - the format string without a conversion character (e.g. `%h'). - -z. Array assignments of the form a=(...) no longer show up in the history - list. - -aa. The parser was fixed to obey the POSIX.2 rules for finding the closing - `}' in a ${...} expression. - -bb. The history file is now opened with mode 0600 rather than 0666, so bash - no longer relies on the user's umask being set appropriately. - -cc. Setting LANG no longer causes LC_ALL to be assigned a value; bash now - relies on proper behavior from the C library. - -dd. Minor changes were made to allow quoted variable expansions using - ${...} to be completed correctly if there is no closing `"'. - -ee. Changes were made to builtins/Makefile.in so that configuring the shell - with `--enable-profiling' works right and builtins/mkbuiltins is - generated. - -2. Changes to Readline - -a. The version number is now 4.0. - -b. There is no longer any #ifdef SHELL code in the source files. - -c. Some changes were made to the key binding code to fix memory leaks and - better support Win32 systems. - -d. Fixed a silly typo in the paren matching code -- it's microseconds, not - milliseconds. - -e. The readline library should be compilable by C++ compilers. - -f. The readline.h public header file now includes function prototypes for - all readline functions, and some changes were made to fix errors in the - source files uncovered by the use of prototypes. - -g. The maximum numeric argument is now clamped at 1000000. - -h. Fixes to rl_yank_last_arg to make it behave better. - -i. Fixed a bug in the display code that caused core dumps if the prompt - string length exceeded 1024 characters. - -j. The menu completion code was fixed to properly insert a single completion - if there is only one match. - -k. A bug was fixed that caused the display code to improperly display tabs - after newlines. - -3. New Features in Bash - -a. New `shopt' option, `restricted_shell', indicating whether or not the - shell was started in restricted mode, for use in startup files. - -b. Filename generation is now performed on the words between ( and ) in - array assignments (which it probably should have done all along). - -c. OLDPWD is now auto-exported, as POSIX.2 seems to require. - -d. ENV and BASH_ENV are read-only variables in a restricted shell. - -4. New Features in Readline - -a. Many changes to the signal handling: - o Readline now catches SIGQUIT and cleans up the tty before returning; - o A new variable, rl_catch_signals, is available to application writers - to indicate to readline whether or not it should install its own - signal handlers for SIGINT, SIGTERM, SIGQUIT, SIGALRM, SIGTSTP, - SIGTTIN, and SIGTTOU; - o A new variable, rl_catch_sigwinch, is available to application - writers to indicate to readline whether or not it should install its - own signal handler for SIGWINCH, which will chain to the calling - applications's SIGWINCH handler, if one is installed; - o There is a new function, rl_free_line_state, for application signal - handlers to call to free up the state associated with the current - line after receiving a signal; - o There is a new function, rl_cleanup_after_signal, to clean up the - display and terminal state after receiving a signal; - o There is a new function, rl_reset_after_signal, to reinitialize the - terminal and display state after an application signal handler - returns and readline continues - -b. There is a new function, rl_resize_terminal, to reset readline's idea of - the screen size after a SIGWINCH. - -c. New public functions: rl_save_prompt and rl_restore_prompt. These were - previously private functions with a `_' prefix. - -d. New function hook: rl_pre_input_hook, called just before readline starts - reading input, after initialization. - -e. New function hook: rl_display_matches_hook, called when readline would - display the list of completion matches. The new function - rl_display_match_list is what readline uses internally, and is available - for use by application functions called via this hook. - -f. New bindable function, delete-char-or-list, like tcsh. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.02.1-release, -and the previous version, bash-2.02-release. - -1. Changes to Bash - -a. A bug that caused the bash readline support to not compile unless aliases - and csh-style history were configured into the shell was fixed. - -b. Fixed a bug that could cause a core dump when here documents contained - more than 1000 characters. - -c. Fixed a bug that caused a CDPATH entry of "" to not be treated the same - as the current directory when in POSIX mode. - -d. Fixed an alignment problem with the memory returned by the bash malloc, - so returned memory is now 64-bit aligned. - -e. Fixed a bug that caused command substitutions executed within pipelines - to put the terminal in the wrong process group. - -f. Fixes to support/config.sub for: alphas, SCO Open Server and Open Desktop, - Unixware 2, and Unixware 7. - -g. Fixes to the pattern matching code to make it work correctly for eight-bit - characters. - -h. Fixed a problem that occasionally caused the shell to display the wrong - value for the new working directory when changing to a directory found - in $CDPATH when in physical mode. - -i. Fixed a bug that caused core dumps when using conditional commands in - shell functions. - -j. Fixed a bug that caused the printf builtin to loop forever if the format - string did not consume any of the arguments. - -k. Fixed a bug in the parameter expansion code that caused "$@" to be - incorrectly split if $IFS did not contain a space character. - -l. Fixed a bug that could cause a core dump when completing hostnames if - the number of matching hostnames was an exact multiple of 16. - -m. Fixed a bug that caused the shell to fork too early when a command - such as `%2 &' was given. - -2. Changes to Readline - -a. Fixed a problem with redisplay that showed up when the prompt string was - longer than the screen width and the prompt contained invisible characters. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.02-release, -and the previous version, bash-2.02-beta2. - -1. Changes to Bash - -a. A bug was fixed that caused the terminal process group to be set - incorrectly when performing command substitution of builtins in a - pipeline. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.02-beta2, -and the previous version, bash-2.02-beta1. - -1. Changes to Bash - -a. Attempting to `wait' for stopped jobs now generates a warning message. - -b. Pipelines which exit due to SIGPIPE in non-interactive shells are now - not reported if the shell is compiled -DDONT_REPORT_SIGPIPE. - -c. Some changes were made to builtins/psize.sh and support/bashbug.sh to - attempt to avoid some /tmp file races and surreptitious file - substitutions. - -d. Fixed a bug that caused the shell not to compile if configured with - dparen arithmetic but without aliases. - -e. Fixed a bug that caused the input stream to be switched when assigning - empty arrays with `bash -c'. - -f. A bug was fixed in the readline expansion glue code that caused bash to - dump core when expanding lines with an unclosed single quote. - -g. A fix was made to the `cd' builtin so that using a non-empty directory - from $CDPATH results in an absolute pathname of the new current working - directory to be displayed after the current directory is changed. - -h. Fixed a bug in the variable assignment code that caused the shell to - dump core when referencing an unset variable with `set -u' enabled in - an assignment statement preceding a command. - -i. Fixed a bug in the exit trap code that caused reserved words to not be - recognized under certain circumstances. - -j. Fixed a bug in the parameter pattern substitution code so that quote - removal is performed. - -k. The shell should now configure correctly on Apple Rhapsody systems. - -l. The `kill' builtin now prints a usage message if it is not passed any - arguments. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.02-beta1, -and the previous version, bash-2.02-alpha1. - -1. Changes to Bash - -a. A few compilation bugs were fixed in the new extended globbing code. - -b. Executing arithmetic commands now sets the command name to `((' so - error messages look right. - -c. Fixed some build problems with various configuration options. - -d. The `printf' builtin now aborts immediately if an illegal format - character is encountered. - -e. The code that creates here-documents now behaves better if the file it's - trying to create already exists for some reason. - -f. Fixed a problem with the extended globbing code that made patterns like - `x+*' expand incorrectly. - -g. The prompt string expansion code no longer quotes tildes with backslashes. - -h. The bash getcwd() implementation in lib/sh/getcwd.c now behaves better in - the presence of lstat(2) failures. - -i. Fixed a bug with strsub() that caused core dumps when executing `fc -s'. - -j. The mail checking code now ensures that it has a valid default mailpath. - -k. A bug was fixed that caused local variables to be unset inappropriately - when sourcing a script from within another sourced script. - -l. A bug was fixed in the history saving code so that functions are saved - in the history list correctly if `cmdhist' is enabled, but `lithist' - is not. - -m. A bug was fixed that caused printf overflows when displaying error - messages. - -n. It should be easier to build the loadble builtins in examples/loadables, - though some manual editing of the generated Makefile is still required. - -o. The user's primary group is now always ${GROUPS[0]}. - -p. Some updates were made to support/config.guess from the GNU master copy. - -q. Some changes were made to the autoconf support for Solaris 2.6 large - files. - -r. The `command' builtins now does the right thing when confstr(3) cannot - find a value for _CS_PATH. - -s. Extended globbing expressions like `*.!(c)' are not history expanded if - `extglob' is enabled. - -t. Using the `-P' option to `cd' will force the value that is assigned to - PWD to not contain any symbolic links. - -2. Changes to Readline - -a. The code that prints completion listings now behaves better if one or - more of the filenames contains non-printable characters. - -b. The time delay when showing matching parentheses is now 0.5 seconds. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.02-alpha1, -and the previous version, bash-2.01.1-release. - -1. Changes to Bash - -a. OS-specific configuration changes for: BSD/OS 3.x, Minix 2.x, - Solaris 2.6, SINIX SVR4. - -b. Changes were made to the generated `info' files so that `install-info' - works correctly. - -c. PWD is now auto-exported. - -d. A fix was made to the pipeline code to make sure that the shell forks - to execute simple commands consisting solely of assignment statements. - -e. Changes to the test suite for systems with 14-character filenames. - -f. The default sizes of some internal hash tables have been made smaller - to reduce the shell's memory footprint. - -g. The `((...))' arithmetic command is now executed directly instead of - being translated into `let "..."'. - -h. Fixes were made to the expansion code so that "$*", "$@", "${array[@]}", - and "${array[@]}" expand correctly when IFS does not contain a space - character, is unset, or is set to NULL. - -i. The indirect expansion code (${!var}) was changed so that the only - valid values of `var' are variable names, positional parameters, `#', - `@', and `*'. - -j. An arithmetic expression error in a $((...)) expansion now causes a - non-interactive shell running in posix mode to exit. - -k. Compound array assignment now splits the words within the parentheses - on shell metacharacters like the parser would before expansing them - and performing the assignment. This is for compatibility with ksh-93. - -l. The internal shell backslash-quoting code (used in the output of `set' - and completion) now quotes tildes if they appear at the start of the - string or after a `=' or `:'. - -m. A couple of bugs with `shopt -o' were fixed. - -n. `bash +o' now displays the same output as `set +o' before starting an - interactive shell. - -o. A bug that caused command substitution and the `eval' builtin to - occasionally free memory twice when an error was encountered was fixed. - -p. The filename globbing code no longer requires read permission for a - directory when the filename to be matched does not contain any globbing - characters, as POSIX.2 specifies. - -q. A bug was fixed so that the job containing the last asynchronous - process is not removed from the job table until a `wait' is executed - for that process or another asynchronous process is started. This - satisfies a POSIX.2 requirement. - -r. A `select' bug was fixed so that a non-numeric user response is treated - the same as a numeric response that is out of range. - -s. The shell no longer parses the value of SHELLOPTS from the environment - if it is restricted, running setuid, or running in `privileged mode'. - -t. Fixes were made to enable large file support on systems such as - Solaris 2.6, where the size of a file may be larger than can be held - in an `int'. - -u. The filename hashing code was fixed to not add `./' to the beginning of - filenames which already begin with `./'. - -v. The configure script was changed so that the GNU termcap library is not - compiled in if `prefer-curses' has been specified. - -w. HISTCONTROL and HISTIGNORE are no longer applied to the second and - subsequent lines of a multi-line command. - -x. A fix was made to `disown' so that it does a better job of catching - out-of-range jobs. - -y. Non-interactive shells no longer report the status of processes terminated - due to SIGINT, even if the standard output is a terminal. - -z. A bug that caused the output of `jobs' to have extra carriage returns - was fixed. - -aa. A bug that caused PIPESTATUS to not be set when builtins or shell - functions were executed in the foreground was fixed. - -bb. Bash now attempts to detect when it is being run by sshd, and treats - that case identically to being run by rshd. - -cc. A bug that caused `set -a' to export SHELLOPTS when one of the shell - options was changed was fixed. - -dd. The `kill' builtin now disallows empty or missing process id arguments - instead of treating them as identical to `0', which means the current - process. - -ee. `var=value declare -x var' now behaves identically to - `var=value export var'. Similarly for `var=value declare -r var' and - `var=value readonly var'. - -ff. A few memory leaks were fixed. - -gg. `alias' and `unalias' now print error messages when passed an argument - that is not an alias for printing or deletion, even when the shell is - not interactive, as POSIX.2 specifies. - -hh. `alias' and `alias -p' now return a status of 0 when no aliases are - defined, as POSIX.2 specifes. - -ii. `cd -' now prints the pathname of the new working directory if the shell - is interactive. - -jj. A fix was made so that the code that binds $PWD now copes with getcwd() - returning NULL. - -kk. `unset' now checks whether or not a function name it's trying to unset - is a valid shell identifier only when the shell is running in posix mode. - -ll. A change was made to the code that generates filenames for here documents - to make them less prone to name collisions. - -mm. The parser was changed so that `time' is recognized as a reserved word - only at the beginning of a pipeline. - -nn. The pathname canonicalization code was changed so that `//' is converted - into `/', but all other pathnames beginning with `//' are left alone, as - POSIX.2 specifies. - -oo. The `logout' builtin will no longer exit a non-interactive non-login - shell. - -2. Changes to Readline - -a. Fixed a problem in the readline test program rltest.c that caused a core - dump. - -b. The code that handles parser directives in inputrc files now displays - more error messages. - -c. The history expansion code was fixed so that the appearance of the - history comment character at the beginning of a word inhibits history - expansion for that word and the rest of the input line. - -3. New Features in Bash - -a. A new version of malloc, based on the older GNU malloc, that has many - changes, is more page-based, is more conservative with memory usage, - and does not `orphan' large blocks when they are freed. - -b. A new version of gmalloc, based on the old GLIBC malloc, with many - changes and range checking included by default. - -c. A new implementation of fnmatch(3) that includes full POSIX.2 Basic - Regular Expression matching, including character classes, collating - symbols, equivalence classes, and support for case-insensitive pattern - matching. - -d. ksh-88 egrep-style extended pattern matching ([@+*?!](patlist)) has been - implemented, controlled by a new `shopt' option, `extglob'. - -e. There is a new ksh-like `[[' compound command, which implements - extended `test' functionality. - -f. There is a new `printf' builtin, implemented according to the POSIX.2 - specification. - -g. There is a new feature for command substitution: $(< filename) now expands - to the contents of `filename', with any trailing newlines removed - (equivalent to $(cat filename)). - -h. There are new tilde prefixes which expand to directories from the - directory stack. - -i. There is a new `**' arithmetic operator to do exponentiation. - -j. There are new configuration options to control how bash is linked: - `--enable-profiling', to allow bash to be profiled with gprof, and - `--enable-static-link', to allow bash to be linked statically. - -k. There is a new configuration option, `--enable-cond-command', which - controls whether or not the `[[' command is included. It is on by - default. - -l. There is a new configuration option, `--enable-extended-glob', which - controls whether or not the ksh extended globbing feature is included. - It is enabled by default. - -m. There is a new configuration #define in config.h.top that, when enabled, - will cause all login shells to source /etc/profile and one of the user- - specific login shell startup files, whether or not the shell is - interactive. - -n. There is a new invocation option, `--dump-po-strings', to dump - a shell script's translatable strings ($"...") in GNU `po' format. - -o. There is a new `shopt' option, `nocaseglob', to enable case-insensitive - pattern matching when globbing filenames and using the `case' construct. - -p. There is a new `shopt' option, `huponexit', which, when enabled, causes - the shell to send SIGHUP to all jobs when an interactive login shell - exits. - -q. `bind' has a new `-u' option, which takes a readline function name as an - argument and unbinds all key sequences bound to that function in a - specified keymap. - -r. `disown' now has `-a' and `-r' options, to limit operation to all jobs - and running jobs, respectively. - -s. The `shopt' `-p' option now causes output to be displayed in a reusable - format. - -t. `test' has a new `-N' option, which returns true if the filename argument - has been modified since it was last accessed. - -u. `umask' now has a `-p' option to print output in a reusable format. - -v. A new escape sequence, `\xNNN', has been added to the `echo -e' and $'...' - translation code. It expands to the character whose ascii code is NNN - in hexadecimal. - -w. The prompt string expansion code has a new `\r' escape sequence. - -x. The shell may now be cross-compiled for the CYGWIN32 environment on - a Unix machine. - -4. New Features in Readline - -a. There is now an option for `iterative' yank-last-arg handline, so a user - can keep entering `M-.', yanking the last argument of successive history - lines. - -b. New variable, `print-completions-horizontally', which causes completion - matches to be displayed across the screen (like `ls -x') rather than up - and down the screen (like `ls'). - -c. New variable, `completion-ignore-case', which causes filename completion - and matching to be performed case-insensitively. - -d. There is a new bindable command, `magic-space', which causes history - expansion to be performed on the current readline buffer and a space to - be inserted into the result. - -e. There is a new bindable command, `menu-complete', which enables tcsh-like - menu completion (successive executions of menu-complete insert a single - completion match, cycling through the list of possible completions). - -f. There is a new bindable command, `paste-from-clipboard', for use on Win32 - systems, to insert the text from the Win32 clipboard into the editing - buffer. - -g. The key sequence translation code now understands printf-style backslash - escape sequences, including \NNN octal escapes. These escape sequences - may be used in key sequence definitions or macro values. - -h. An `$include' inputrc file parser directive has been added. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.01.1-release, -and the previous version, bash-2.01-release. - -1. Changes to Bash - -a. The select command was fixed to check the validity of the user's - input more strenuously. - -b. A bug was fixed that prevented `time' from timing commands correctly - when supplied as an argument to `bash -c'. - -c. A fix was made to the mail checking code to keep from adding the same - mail file to the list of files to check multiple times when parsing - $MAILPATH. - -d. Fixed an off-by-one error in the tilde expansion library. - -e. When using the compound array assignment syntax, the old value of - the array is cleared before assigning the new value. - -f. Fixed a bug that could cause a core dump when a trap handler was reset - to the default in the trap command associated with that signal. - -g. Fixed a bug in the locale code that occurred when assigning a value - to LC_ALL. - -h. A change was made to the parser so that words of the form xxx=(...) - are not considered compound assignment statements unless there are - characters before the `='. - -i. A fix was made to the command tracing code to correctly quote each - word of output. - -j. Some changes were made to the bash-specific autoconf tests to make them - more portable. - -k. Completion of words with globbing characters now correctly quotes the - result. - -l. The directory /var/spool/mail is now preferred to /usr/spool/mail when - configure is deciding on the default mail directory. - -m. The brace completion code was fixed to not quote the `{' and `}'. - -n. Some fixes were made to make $RANDOM more random in subshells. - -o. System-specific changes were made to configure for: SVR4.2 - -p. Changes were made so that completion of words containing globbing chars - substitutes the result only if a single filename was matched. - -q. The window size is now recomputed after a job is stopped with SIGTSTP if - the user has set `checkwinsize' with `shopt'. - -r. When doing substring expansion, out-of-range substring specifiers now - cause nothing to be substituted rather than an expansion error. - -s. A fix was made so that you can no longer trap `SIGEXIT' or `SIGDEBUG' -- - only `EXIT' and `DEBUG' are accepted. - -t. The display of trapped signals now uses the signal number if signals - for which bash does not know the name are trapped. - -u. A fix was made so that `bash -r' does not turn on restricted mode until - after the startup files are executed. - -v. A bug was fixed that occasionally caused a core dump when a variable - found in the temporary environment of export/declare/readonly had a - null value. - -w. A bug that occasionally caused unallocated memory to be passed to free() - when doing arithmetic substitution was fixed. - -x. A bug that caused a buffer overrun when expanding a prompt string - containing `\w' and ${#PWD} exceeded PATH_MAX was fixed. - -y. A problem with the completion code that occasionally caused it to - refer to a character before the beginning of the readline line buffer - was fixed. - -z. A bug was fixed so that the `read' builtin restarts reads when - interrupted by signals other than SIGINT. - -aa. Fixed a bug that caused a command to be freed twice when there was - an evaluation error in the `eval' command. - -2. Changes to Readline - -a. Added a missing `extern' to a declaration in readline.h that kept - readline from compiling cleanly on some systems. - -b. The history file is now opened with mode 0600 when it is written for - better security. - -c. Changes were made to the SIGWINCH handling code so that prompt redisplay - is done better. - -d. ^G now interrupts incremental searches correctly. - -e. A bug that caused a core dump when the set of characters to be quoted - when completing words was empty was fixed. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.01-release, -and the previous version, bash-2.01-beta2. - -1. Changes to Bash - -a. The `distclean' target should remove the `printenv' executable if it - has been created. - -b. The test suite was changed slightly to ensure that the error messages - are printed in English. - -c. A bug that caused the shell to dump core when a filename containing a - `/' was passed to `hash' was fixed. - -d. Pathname canonicalization now leaves a leading `//' intact, as POSIX.1 - requires. - -e. A memory leak when completing commands was fixed. - -f. A memory leak that occurred when checking the hash table for commands - with relative paths was fixed. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.01-beta2, -and the previous version, bash-2.01-beta1. - -1. Changes to Bash - -a. The `ulimit' builtin translates RLIM_INFINITY to the hard limit only if - the current (soft) limit is less than or equal to the hard limit. - -b. Fixed a bug that caused the bash emulation of strcasecmp to produce - incorrect results. - -c. A bug that caused memory to be freed twice when a trap handler resets - the trap more than once was fixed. - -d. A bug that caused machines where sizeof (pointer) > sizeof (int) to - fail (and possibly dump core) when trying to unwind-protect a null - pointer was fixed. - -e. The startup files should not be run with job control enabled. This fix - allows SIGINT to once again interrupt startup file execution. - -f. Bash should not change the SIGPROF handler if it is set to something - other than SIG_DFL. - -g. The completion code that provides bash-specific completions for readline - now quotes characters that the readline code would treat as word break - characters if they appear in a file name. - -h. The completion code now correctly quotes filenames containing a `!', - even if the user attempted to use double quotes when attempting - completion. - -i. A bug that caused the shell to dump core when `disown' was called without - arguments and there was no current job was fixed. - -j. A construct like $((foo);bar) is now processed as a command substitution - rather than as a bad arithmetic substitution. - -k. A couple of bugs that caused `fc' to not obey the `cmdhist' and `lithist' - shell options when editing and re-executing a series of commands were - fixed. - -l. A fix was made to the grammar -- the list of commands between `do' and - `done' in the body of a `for' command should be treated the same as a - while loop. - -2. Changes to Readline - -a. A couple of bugs that caused the history search functions to attempt to - free a NULL pointer were fixed. - -b. If the C library provides setlocale(3), readline does not need to look - at various environment variables to decide whether or not to go into - eight-bit mode automatically -- just check whether the current locale - is not `C' or `POSIX'. - -c. If the filename completion function finds that a directory was not closed - by a previous (interrupted) completion, it closes the directory with - closedir(). - -3. New Features in Bash - -a. New bindable readline commands: history-and-alias-expand-line and - alias-expand-line. The code was always in there, there was just no - way to execute it. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.01-beta1, -and the previous version, bash-2.01-alpha1. - -1. Changes to Bash - -a. Fixed a problem that could cause file descriptors used for process - substitution to conflict with those used explicitly in redirections. - -b. Made it easier to regenerate configure if the user changes configure.in. - -c. ${GROUPS[0]} should always be the primary group, even on systems without - multiple groups. - -d. Spelling correction is no longer enabled by default. - -e. Fixes to quoting problems in `bashbug'. - -f. OS-specific configuration changes were made for: Irix 6. - -g. OS-specific code changes were made for: QNX. - -h. A more meaningful message is now printed when the file in /tmp for a - here document cannot be created. - -i. Many changes to the shell's variable initialization code to speed - non-interactive startup. - -j. Changes to the non-job-control code so that it does not try to open - /dev/tty. - -k. The output of `set' and `export' is once again sorted, as POSIX wants. - -l. Fixed a problem caused by a recursive call reparsing the value of - $SHELLOPTS. - -m. The tilde code no longer calls getenv() when it's compiled as part of - the shell, which should eliminate problems on systems that cannot - redefine getenv(), like the NeXT OS. - -n. Fixed a problem that caused `bash -o' or `bash +o' to not list all - the shell options. - -o. Fixed `ulimit' to convert RLIM_INFINITY to the appropriate hard limit - only if the hard limit is greater than the current (soft) limit. - -p. Fixed a problem that arose when building bash in a different directory - than the source and y.tab.[ch] were remade with something other than - bison. This came up most often on NetBSD. - -q. Fixed a problem with completion -- it thought that `pwd`/[TAB] indicated - an unfinished command completion (`/), which generated errors. - -r. The bash special tilde expansions (~-, ~+) are now attempted before - calling the standard tilde expansion code, which should eliminate the - problems people have been seeing with this on Solaris 2.5.1. - -s. Added support for to places where it was missing. - -t. Changed the code that reads the output of a command substitution to not - go through stdio. This reduces the memory requirements and is faster. - -u. A number of changes to speed up export environment creation were made. - -v. A number of memory leaks were fixed as the result of running the test - scripts through Purify. - -w. Fixed a bug that caused subshells forked to interpret executable - scripts without a leading `#!' to not reinitialize the values of - the shell options. - -2. Changes to Readline - -a. History library has less `#ifdef SHELL' code -- abstracted stuff out - into application-specific function hooks. - -b. Readline no longer calls getenv() if it's compiled as part of the shell, - which should eliminate problems on systems that cannot redefine getenv(), - like the NeXT OS. - -c. Fixed translation of ESC when `untranslating' macro values. - -d. The region kill operation now fixes the mark if it ends up beyond the - boundaries of the line after the region is deleted. - -3. New Features in Bash - -a. New argument for `configure': `--with-curses'. This can be used to - override the selection of the termcap library on systems where it is - deficient. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.01-alpha1, -and the previous version, bash-2.0-release. - -1. Changes to Bash - -a. System-specific configuration changes for: FreeBSD, SunOS4, Irix, - MachTen, QNX 4.2, Harris Night Hawk, SunOS5. - -b. System-specific code changes were made for: Linux, 4.4 BSD, QNX 4.2, - HP-UX, AIX 4.2. - -c. A bug that caused the exec builtin to fail because the full pathname of - the command could not be found was fixed. - -d. The code that performs output redirections is now more resistant to - race conditions and possible security exploits. - -e. A bug that caused the shell to dump core when performing pattern - substitutions on variable values was fixed. - -f. More hosts are now recognized by the auto-configuration mechanism - (OpenBSD, QNX, others). - -g. Assignments to read-only variables that attempt to convert them to - arrays are now errors. - -h. A bug that caused shell scripts using array assignments in POSIX mode - to exit after the assignment was performed was fixed. - -i. The substring expansion code is now more careful about running off the - ends of the expanded variable value. - -j. A bug that caused completion to fail if a backquoted command substitution - appeared anywhere on the line was fixed. - -k. The `source' builtin no longer turns off history if it has been enabled - in a non-interactive shell. - -l. A bug that caused the shell to crash when `disown' was given a pid - instead of a job number was fixed. - -m. The `cd' spelling correction code will not try to change to `.' if no - directory entries match a single-character argument. - -n. A bad variable name supplied to `declare', `export', or `readonly' no - longer causes a non-interactive shell in POSIX mode to exit. - -o. Some fixes were made to the test suite to handle peculiarities of - various Unix versions. - -p. The bash completion code now quotes characters that readline would - treat as word breaks for completion but are not shell metacharacters. - -q. Bad options supplied at invocation now cause a usage message to be - displayed. - -r. Fixes were made to the code that handles DEBUG traps so that the trap - string is not freed inappropriately. - -s. Some changes were made to the bash debugger in examples/bashdb -- it - should be closer to working now. - -t. A problem that caused the default filename used for mail checking to be - wrong was fixed. - -u. A fix was made to the `echo' builtin so that NUL characters printed with - `echo -e' do not cause the output to be truncated. - -v. A fix was made to the job control code so that the shell behaves better - when monitor mode is enabled in a non-interactive shell. - -w. Bash no longer catches all of the terminating signals in a non- - interactive shell until a trap is set on EXIT, which should result in - quicker startup. - -x. A fix was made to the command timing code so that `time' can be used in - a loop. - -y. A fix was made to the parser so that `((cmd); cmd2)' is now parsed as - a nested subshell rather than strictly as an (erroneous) arithmetic - command. - -z. A fix was made to the globbing code so that it correctly matches quoted - filenames beginning with a `.'. - -aa. A bug in `fc' that caused some multi-line commands to not be stored as - one command in the history when they were re-executed after editing - (with `fc -e') was fixed. - -bb. The `ulimit' builtin now attempts to catch some classes of integer - overflows. - -cc. The command-oriented-history code no longer attempts to add `;' - inappropriately when a newline appears while reading a $(...) command - substitution. - -dd. A bug that caused the shell to dump core when `help --' was executed - was fixed. - -ee. A bug that caused the shell to crash when an unset variable appeared - in the body of a here document after `set -u' had been executed was - fixed. - -ff. Implicit input redirections from /dev/null for asynchronous commands - are now handled better. - -gg. A bug that caused the shell to fail to compile when configured with - `--disable-readline' was fixed. - -hh. The globbing code should now be interruptible. - -ii. Bash now notices when the `kill' builtin is used to send SIGCONT to a - stopped job and adjusts the data structures accordingly, as if `bg' had - been executed instead. - -jj. A bug that caused the shell to crash when mixing calls to `getopts' - and `shift' on the same set of positional parameters was fixed. - -kk. The command printing code now preserves the `-p' flag to `time'. - -ll. The command printing code now handles here documents better when there - are other redirections associated with the command. - -mm. The special glibc environment variable (NNN_GNU_nonoption_argv_flags_) - is no longer placed into the environment of executed commands -- users - of glibc had too many problems with it. - -nn. Reorganized the code that generates signames.h. The signal_names list - is now more complete but may be slightly different (SIGABRT is favored - over SIGIOT, for example). The preferred signal names are those - listed in the POSIX.2 standard. - -oo. `bashbug' now uses a filename shorter than 14 characters for its - temporary file, and asks for confirmation before sending the bug - report. - -pp. A bug that caused TAB completion in vi editing mode to not be turned - off when `set -o posix' was executed or back on when `set +o posix' - was executed was fixed. - -qq. A bug in the brace expansion code that caused brace expansions appearing - in new-style $(...) command substitutions to be inappropriately expanded - was fixed. - -rr. A bug in the readline hook shell-expand-line that could cause memory to - be inappropriately freed was fixed. - -ss. A bug that caused some arithmetic expressions containing `&&' and `||' - to be parsed with the wrong precedence has been fixed. - -tt. References to unbound variables after `set -u' has been executed now - cause the shell to exit immediately, as they should. - -uu. A bug that caused the shell to exit inappropriately when `set -e' had - been executed and a command's return status was being inverted with the - `!' reserved word was fixed. - -vv. A bug that could occasionally cause the shell to crash with a - divide-by-zero error when timing a command was fixed. - -ww. A bug that caused parameter pattern substitution to leave stray - backslashes in the replacement string when the expression is in - double quotes was fixed. - -xx. The `break' and `continue' builtins now break out of all loops when an - invalid count argument is supplied. - -yy. Fixed a bug that caused PATH to be set to the empty string if - `command -p' is executed with PATH unset. - -zz. Fixed `kill -l signum' to print the signal name without the `SIG' prefix, - as POSIX specifies. - -aaa. Fixed a bug that caused the shell to crash while setting $SHELLOPTS - if there were no shell options set. - -bbb. Fixed `export -p' and `readonly -p' so that when the shell is in POSIX - mode, their output is as POSIX.2 specifies. - -ccc. Fixed a bug in `readonly' so that `readonly -a avar=(...)' actually - creates an array variable. - -ddd. Fixed a bug that prevented `time' from correctly timing background - pipelines. - -2. Changes to Readline - -a. A bug that caused an extra newline to be printed when the cursor was on - an otherwise empty line was fixed. - -b. An instance of memory being used after it was freed was corrected. - -c. The redisplay code now works when the prompt is longer than the screen - width. - -d. `dump-macros' is now a bindable name, as it should have been all along. - -e. Non-printable characters are now expanded when displaying macros and - their values. - -f. The `dump-variables' and `dump-macros' commands now output a leading - newline if they're called as the result of a key sequence, rather - than directly by an application. - -3. New Features in Bash - -a. There is a new builtin array variable: GROUPS, the set of groups to which - the user belongs. This is used by the test suite. - -4. New Features in Readline - -a. If a key sequence bound to `universal-argument' is read while reading a - numeric argument started with `universal-argument', it terminates the - argument but is otherwise ignored. This provides a way to insert multiple - instances of a digit string, and is how GNU emacs does it. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.0-release, -and the previous version, bash-2.0-beta3. - -1. Changes to Bash - -a. Fix to the `getopts' builtin so that it does the right thing when a - required option argument is not present. - -b. The completion code now updates the common prefix of matched names - after FIGNORE processing is done, since any names that were removed - may have changed the common prefix. - -c. Fixed a bug that made messages in MAILPATH entries not work correctly. - -d. Fixed a serious documentation error in the description of the new - ${parameter:offset[:length]} expansion. - -e. Fixes to make parameter substring expansion ({$param:offset[:length]}) - work when within double quotes. - -f. Fixes to make ^A (CTLESC) survive an unquoted expansion of positional - parameters. - -g. Corrected a misspelling of `unlimited' in the output of `ulimit'. - -h. Fixed a bug that caused executable scripts without a leading `#!' to - occasionally pick up the wrong set of positional parameters. - -i. Linux systems now have a working `ulimit -v', using RLIMIT_AS. - -j. Updated config.guess so that many more machine types are recognized. - -k. Fixed a bug with backslash-quoted slashes in the ${param/pat[/sub]} - expansion. - -l. If the shell is named `-su', and `-c command' is supplied, read and - execute the login shell startup files even though the shell is not - interactive. This is to support the `-' option to `su'. - -m. Fixed a bug that caused core dumps when the DEBUG trap was ignored - with `trap "" DEBUG' and a shell function was subsequently executed. - -n. Fixed a bug that caused core dumps in the read builtin when IFS was - set to the null string and the input had leading whitespace. - -2. Changes to Readline - -a. Fixed a bug that caused a numeric argument of 1024 to be ignored when - inserting text. - -b. Fixed the display code so that the numeric argument is displayed as it's - being entered. - -c. Fixed the numeric argument reading code so that `M-- command' is - equivalent to `M--1 command', as the prompt implies. - -3. New Features in Bash - -a. `ulimit' now sets both hard and soft limits and reports the soft limit - by default (when neither -H nor -S is specified). This is compatible - with versions of sh and ksh that implement `ulimit'. - -b. Integer constants have been extended to base 64. - -4. New Features in Readline - -a. The `home' and `end' keys are now bound to beginning-of-line and - end-of-line, respectively, if the corresponding termcap capabilities - are present. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.0-beta3, -and the previous version, bash-2.0-beta2. - -1. Changes to Bash - -a. System-specific changes for: AIX 4.2, SCO 3.2v[45], HP-UX. - -b. When in POSIX mode, variable assignments preceding a special builtin - persist in the shell environment after the builtin completes. - -c. Changed all calls to getwd() to getcwd(). Improved check for systems - where the libc getcwd() calls popen(), since that breaks on some - systems when job control is being used. - -d. Fixed a bug that caused seg faults when executing scripts with the - execute bit set but without a leading `#!'. - -e. The environment passed to executed commands is never sorted. - -f. A bug was fixed in the code that expands ${name[@]} to the number of - elements in an array variable. - -g. A bug was fixed in the array compound assignment code ( A=( ... ) ). - -h. Window size changes now correctly propagate down to readline if - the shopt `checkwinsize' option is enabled. - -i. A fix was made in the code that expands to the length of a variable - value (${#var}). - -j. A fix was made to the command builtin so that it did not turn on the - `no fork' flag inappropriately. - -k. A fix was made to make `set -n' work more reliably. - -l. A fix was made to the job control initialization code so that the - terminal process group is set to the shell's process group if the - shell changes its own process group. - -2. Changes to Readline - -a. System-specific changes for: SCO 3.2v[45]. - -b. The behavior of the vi-mode `.' when redoing an `i' command was changed - to insert the text previously inserted by the `i' command rather than - simply entering insert mode. - -3. New features in Bash - -a. There is a new version of the autoload function package, in - examples/functions/autoload.v2, that uses arrays and provides more - functionality. - -b. Support for LC_COLLATE and locale-specific sorting of the results of - pathname expansion if strcoll() is available. - -4. New Features in Readline - -a. Support for locale-specific sorting of completion possibilities if - strcoll() is available. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.0-beta2, -and the previous version, bash-2.0-beta1. - -1. Changes to Bash - -a. `pushd -' is once again equivalent to `pushd $OLDPWD'. - -b. OS-specific changes for: SCO 3.2v[45]. - -c. A change was made to the fix for the recently-reported security hole - when reading characters with octal value 255 to make it work better on - systems with restartable system calls when not using readline. - -d. Some changes were made to the test suite so that it works if you - configure bash with --enable-usg-echo-default. - -e. A fix was made to the parsing of conditional arithmetic expressions. - -f. Illegal arithmetic bases now cause an arithmetic evaluation error rather - than being silently reset. - -g. Multiple arithmetic bases now cause an arithmetic evaluation error - instead of being ignored. - -h. A fix was made to the evaluation of ${param?word} to conform to POSIX.2. - -i. A bug that sometimes caused array indices to be evaluated twice (which - would cause errors when they contained assignment statements) was fixed. - -j. `ulimit' was rewritten to avoid problems with getrlimit(2) returning - unsigned values and to simplify the code. - -k. A bug in the command-oriented-history code that caused it to sometimes - put semicolons after right parens inappropriately was fixed. - -l. The values inserted into the prompt by the \w and \W escape sequences - are now quoted to prevent further expansion. - -m. An interactive shell invoked as `sh' now reads and executes commands - from the file named by $ENV when it starts up. If it's a login shell, - it does this after reading /etc/profile and ~/.profile. - -n. The file named by $ENV is never read by non-interactive shells. - -2. Changes to Readline - -a. A few changes were made to hide some macros and functions that should not - be public. - -b. An off-by-one error that caused seg faults in the history expansion code - was fixed. - -3. New Features in Bash - -a. The ksh-style ((...)) arithmetic command was implemented. It is exactly - identical to let "...". This is controlled by a new option to configure, - `--enable-dparen-arithmetic', which is on by default. - -b. There is a new #define available in config.h.top: SYS_BASH_LOGOUT. If - defined to a filename, bash reads and executes commands from that file - when a login shell exits. It's commented out by default. - -c. `ulimit' has a `-l' option that reports the maximum amount of data that - may be locked into memory on 4.4BSD-based systems. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.0-beta1, -and the previous version, bash-2.0-alpha4. - -1. Changes to Bash - -a. A bug that sometimes caused traps to be ignored on signals the - shell treats specially was fixed. - -b. The internationalization code was changed to track the values of - LC_* variables and call setlocale() as appropriate. The TEXTDOMAIN - and TEXTDOMAINDIR variables are also tracked; changes cause calls - to textdomain() and bindtextdomain(), if available. - -c. A bug was fixed that sometimes caused double-quoted strings to be - parsed incorrectly. - -d. Changes were made so that the siglist code compiles correctly on - Solaris 2.5. - -e. Added `:' to the set of characters that cause word breaks for the - completion code so that pathnames in assignments to $PATH can be - completed. - -f. The `select' command was fixed to print $PS3 to stderr. - -g. Fixed an error in the manual page section describing the effect that - setting and unsetting GLOBIGNORE has on the setting of the `dotglob' - option. - -h. The time conversion code now uses CLK_TCK rather than CLOCKS_PER_SEC - on systems without gettimeofday() and resources. - -i. The getopt static variables are now initialized each time a subshell - is started, so subshells using `getopts' work right. - -j. A sign-extension bug that caused a possible security hole was fixed. - -k. The parser now reads characters between backquotes within a double- - quoted string as a single word, so double quotes in the backquoted - string don't terminate the enclosing double-quoted string. - -l. A bug that caused `^O' to work incorrectly when typed as the first - thing to an interactive shell was fixed. - -m. A rarely-exercised off-by-one error in the code that quotes variable - values was fixed. - -n. Some memory and file descriptor leaks encountered when running a - shell script that is executable but does not have a leading `#!' - were plugged. - -2. Changes to Readline - -a. A bug that sometimes caused incorrect results when trying to read - typeahead on systems without FIONREAD was fixed. - -3. New Features in Bash - -a. The command timing code now uses the value of the TIMEFORMAT variable - to format and display timing statistics. - -b. The `time' reserved word now accepts a `-p' option to force the - POSIX.2 output format. - -c. There are a couple of new and updated scripts to convert csh startup - files to bash format. - -d. There is a new builtin array variable: BASH_VERSINFO. The various - members hold the parts of the version information in BASH_VERSION, - plus the value of MACHTYPE. - -4. New Features in Readline - -a. Setting LANG to `en_US.ISO8859-1' now causes readline to enter - eight-bit mode. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.0-alpha4, -and the previous version, bash-2.0-alpha3. - -1. Changes to Bash - -a. There is better detection of rsh connections on Solaris 2. - -b. Assignments to read-only variables preceding a command name are now - variable assignment errors. Variable assignment errors cause - non-interactive shells running in posix mode to exit. - -c. The word tokenizer was rewritten to handle nested quotes and pairs - ('', "", ``, ${...}, $(...), $[...], $'...', $"...", <(...), >(...)) - correctly. Some of the parameter expansion code was updated as a - consequence. - -d. A fix was made to `test' when given three arguments so that a binary - operator is checked for first, before checking that the first argument - is `!'. - -e. 2''>/dev/null is no longer equivalent to 2>/dev/null. - -f. Parser error messages were regularized, and in most cases the name of - the shell script being read by a non-interactive shell is not printed - twice. - -g. A fix was made to the completion code so that it no longer removes the - text the user typed in some cases. - -h. The special glibc `getopt' environment variable is no longer put into - the environment on machines with small values of ARG_MAX. - -i. The expansion of ${...} now follows the POSIX.2 rules for finding the - closing `}'. - -j. The shell no longer displays spurious status messages for background - jobs in shell scripts that complete successfully when the script is - run from a terminal. - -k. `shopt -o' now correctly updates $SHELLOPTS. - -l. A bug that caused the $PATH searching code to return a non-executable - file even when an executable file with the same name appeared later in - $PATH was fixed. - -m. The shell now does tilde expansions on unquoted `:~' in assignment - statements when not in posix mode. - -n. Variable assignment errors when a command consists only of assignments - now cause non-interactive shells to exit when in posix mode. - -o. If the variable in a `for' or `select' command is read-only, or not a - legal shell identifier, a variable assignment error occurs. - -p. `test' now handles `-a' and `-o' as binary operators when three arguments - are supplied, and correctly parses `( word )' as equivalent to `word'. - -q. `test' was fixed so that file names of the form /dev/fd/NN mean the same - thing on all systems, even Linux. - -r. Fixed a bug in the globbing code that caused patterns with multiple - consecutive `*'s to not be matched correctly. - -s. Fixed a bug that caused $PS2 to not be printed when an interactive shell - not using readline is reading a here document. - -t. Fixed a bug that caused history expansion to be performed inappropriately - when a single-quoted string spanned more than one line. - -u. `getopts' now checks that the variable name passed by the user as the - second argument is a legal shell identifier and that the variable is - not read-only. - -v. Fixed `getopts' to obey POSIX.2 rules for setting $OPTIND when it - encounters an error. - -w. Fixed `set' to display variable values in a form that can be re-read. - -x. Fixed a bug in the code that keeps track of whether or not local variables - have been declared at the current level of function nesting. - -y. Non-interactive shells in posix mode now exit if the name in a function - declaration is not a legal identifier. - -z. The job control code now ignores stopped children when the shell is not - interactive. - -aa. The `cd' builtin no longer attempts spelling correction on the directory - name if the shell is not interactive, regardless of the setting of the - `cdspell' option. - -bb. Some OS-specific changes were made for SCO 3.2v[45] and AIX 4.2. - -cc. `time' now prints its output to stderr, as POSIX.2 specifies. - -2. Fixes to Readline - -a. After printing possible completions, all lines of a multi-line prompt - are redisplayed. - -b. Some changes were made to the terminal handling code in rltty.c to - work around AIX 4.2 bugs. - -3. New Features in Bash - -a. There is a new loadable builtin: sprintf, with calling syntax - sprintf var format [args] - This provides an easy way to simulate ksh left- and right-justified - variable values. - -b. The expansions of \h and \H in prompt strings were swapped. \h now - expands to the hostname up to the first `.', as in bash-1.14. - -4. New Features in Readline - -a. The bash-1.14 behavior when ^M is typed while doing an incremental - search was restored. ^J may now be used to terminate the search without - accepting the line. - -b. There is a new bindable variable: disable-completion. This inhibits - word completion and causes the completion character to be inserted as - if it had been bound to self-insert. - ------------------------------------------------------------------------------- -This document details the changes between this version, bash-2.0-alpha3, -and the previous version, bash-2.0-alpha2. - -There is now a file `COMPAT' included in the distribution that lists the -user-visible incompatibilities between 1.14 and 2.0. - -1. Changes to Bash - -a. Some work was done so that word splitting of the rhs of assignment - statements conforms more closely to historical practice. - -b. A couple of errant memory frees were fixed. - -c. A fix was made to the test builtin so it recognizes `<' and `>' as - binary operators. - -d. The GNU malloc in lib/malloc/malloc.c now scrambles memory as it's - allocated and freed. This is to catch callers that refer to freed - memory or assume something about newly-allocated memory. - -e. Fixed a problem with conversion to 12-hour time in the prompt - expansion code. - -f. Fixed a problem with configure's argument parsing order. Now you can - correctly turn on specific options after using --enable-minimal-config. - -g. The configure script now automatically disables the use of GNU malloc - on systems where it's appropriate (better than having people read the - NOTES file and do it manually). - -h. There are new prompt expansions (\v and \V) to insert version information - into the prompt strings. - -i. The default prompt string now includes the version number. - -j. Most of the builtins that take no options were changed to use the - internal getopt so they can produce proper error messages for -? - and incorrect options. - -k. Some system-specific changes were made for SVR4.2 and Solaris 2.5. - -l. Bash now uses PATH_MAX instead of MAXPATHLEN and NAME_MAX instead of - MAXNAMLEN. - -m. A couple of problems caused by uninitialized variables were fixed. - -n. There are a number of new loadable builtin examples: logname, basename, - dirname, tty, pathchk, tee, head, and rmdir. All of these conform to - POSIX.2. - -o. Bash now notices changes in TZ and calls tzset() if present, so - changing TZ will alter the time printed by prompt expansions. - -p. The source was reorganized a bit so I don't have to wait so long for - some files to compile, and to facilitate the creation of a `shell - library' at some future point. - -q. Bash no longer turns off job control if called as `sh', since the - POSIX.2 spec includes job control as a standard feature. - -r. `bash -o posix' now works as intended. - -s. Fixed a problem with the completion code: when completing a filename - that contained globbing characters, if show-all-if-ambiguous was set, - the completion code would remove the user's text. - -t. Fixed ulimit so that (hopefully) the full range of limits is available - on HPUX systems. - -u. A new `shopt' option (`hostcomplete') enables and disables hostname - completion. - -v. The shell no longer attempts to save the history on an abort(), - which is usually called by programming_error(). - -w. The `-s' option to `fc' was changed to echo the command to be executed - to stderr instead of stdout. - -x. If the editor invoked by `fc -e' exits with a non-zero status, no - commands are executed. - -y. Fixed a bug that made the shopt `histverify' option work incorrectly. - -z. There is a new variable `MACHTYPE' whose value is the GNU-style - `cpu-company-system' system description as set by configure. (The - values of MACHTYPE and HOSTTYPE should really be swapped.) - -aa. The `ulimit' builtin now allows the maximum virtual memory size to be - set via setrlimit(2) if RLIMIT_VMEM is defined. - -bb. `bash -nc 'command'' no longer runs `command'. - -2. Changes to Readline - -a. Fixed a typo in the code that checked for FIONREAD in input.c. - -b. Fixed a bug in the code that outputs keybindings, so things like C-\ - are quoted properly. - -c. Fixed a bug in the inputrc file parsing code to handle the problems - caused by inputrc files created from the output of `bind -p' in - previous versions of bash. The problem was due to the bug fixed - in item b above. - -d. Readline no longer turns off the terminal's meta key, and turns it on - once the first time it's called. - ------------------------------------------------------------------------------- -This file documents the changes between this version, bash-2.0-alpha2, -and the previous version, bash-2.0-alpha. - -1. Changes to Bash - -a. The shell no longer thinks directories are executable. - -b. `disown' has a new option, `h', which inhibits the resending of SIGHUP - but does not remove the job from the jobs table. - -c. The varargs functions in error.c now use ANSI-C `stdarg' if available. - -d. The build process now treats the `build version' in .build as local to - the build directory, so different versions built from the same source - tree have different `build versions'. - -e. Some problems with the grammar have been fixed. (It used `list' in a few - productions where `compound_list' was needed. A `list' must be terminated - with a newline or semicolon; a `compound_list' need not be.) - -f. A fix was made to keep `wait' from hanging when waiting for all background - jobs. - -g. `bash --help' now writes its output to stdout, like the GNU Coding Standards - specify, and includes the machine type (the value of MACHTYPE). - -h. `bash --version' now prints more information and exits successfully, like - the GNU Coding Standards specify. - -i. The output of `time' and `times' now prints fractional seconds with three - places after the decimal point. - -j. A bug that caused process substitutions to screw up the pipeline printed - by `jobs' was fixed. - -k. Fixes were made to the code that implements $'...' and $"..." so they - work as documented. - -l. The process substitution code now opens named pipes for reading with - O_NONBLOCK to avoid hanging. - -m. Fixes were made to the trap code so the shell cleans up correctly if the - trap command contains a `return' and we're executing a function or - sourcing a script with `.'. - -n. Fixes to doc/Makefile.in so that it doesn't try to remake all of the - documentation (ps, dvi, etc.) on a `make install'. - -o. Fixed an auto-increment error that caused bash -c args to sometimes dump - core. - -p. Fixed a bug that caused $HISTIGNORE to fail when the history line - contained globbing characters. - -2. Changes to Readline - -a. There is a new string variable, rl_library_version, available for use by - applications. The current value is "2.1". - -b. A bug encountered when expand-tilde was enabled and file completion was - attempted on a word beginning with `~/' was fixed. - -c. A slight change was made to the incremental search termination behavior. - ESC still terminates the search, but if input is pending or arrives - within 0.1 seconds (on systems with select(2)), it is used as a prefix - character. This is intented to allow users to terminate searches with - the arrow keys and get the behavior they expect. diff --git a/copyright-comment b/copyright-comment deleted file mode 100644 index 83f754417..000000000 --- a/copyright-comment +++ /dev/null @@ -1,13 +0,0 @@ - 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 . -*/ diff --git a/copyright-def b/copyright-def deleted file mode 100644 index 1d083e4c8..000000000 --- a/copyright-def +++ /dev/null @@ -1,12 +0,0 @@ -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 . diff --git a/copyright-makefile b/copyright-makefile deleted file mode 100644 index e9f3fab05..000000000 --- a/copyright-makefile +++ /dev/null @@ -1,13 +0,0 @@ -# This program is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see . -# diff --git a/ddd b/ddd deleted file mode 100644 index 74d0b69dd..000000000 --- a/ddd +++ /dev/null @@ -1,286 +0,0 @@ -*** ../bash-20090903/redir.c 2009-08-17 17:46:34.000000000 -0400 ---- redir.c 2009-09-11 17:29:54.000000000 -0400 -*************** -*** 99,111 **** - int oflags; - - allocname = 0; -! if (temp->redirector < 0) - /* This can happen when read_token_word encounters overflow, like in - exec 4294967297>x */ - filename = _("file descriptor out of range"); - #ifdef EBADF - /* This error can never involve NOCLOBBER */ -! else if (error != NOCLOBBER_REDIRECT && temp->redirector >= 0 && error == EBADF) - { - /* If we're dealing with two file descriptors, we have to guess about - which one is invalid; in the cases of r_{duplicating,move}_input and ---- 99,113 ---- - int oflags; - - allocname = 0; -! if (temp->rflags & REDIR_VARASSIGN) -! filename = savestring (temp->redirector.filename->word); -! else if (temp->redirector.dest < 0) - /* This can happen when read_token_word encounters overflow, like in - exec 4294967297>x */ - filename = _("file descriptor out of range"); - #ifdef EBADF - /* This error can never involve NOCLOBBER */ -! else if (error != NOCLOBBER_REDIRECT && temp->redirector.dest >= 0 && error == EBADF) - { - /* If we're dealing with two file descriptors, we have to guess about - which one is invalid; in the cases of r_{duplicating,move}_input and -*************** -*** 119,125 **** - filename = allocname = itos (temp->redirectee.dest); - break; - default: -! filename = allocname = itos (temp->redirector); - break; - } - } ---- 121,127 ---- - filename = allocname = itos (temp->redirectee.dest); - break; - default: -! filename = allocname = itos (temp->redirector.dest); - break; - } - } -*************** -*** 162,167 **** ---- 164,173 ---- - internal_error (_("cannot create temp file for here-document: %s"), strerror (heredoc_errno)); - break; - -+ case BADVAR_REDIRECT: -+ internal_error (_("cannot assign fd to variable %s"), filename); -+ break; -+ - default: - internal_error ("%s: %s", filename, strerror (error)); - break; -*************** -*** 649,658 **** - char *redirectee_word; - enum r_instruction ri; - REDIRECT *new_redirect; - - redirectee = redirect->redirectee.filename; - redir_fd = redirect->redirectee.dest; -! redirector = redirect->redirector; - ri = redirect->instruction; - - if (redirect->flags & RX_INTERNAL) ---- 655,665 ---- - char *redirectee_word; - enum r_instruction ri; - REDIRECT *new_redirect; -+ REDIRECTEE sd; - - redirectee = redirect->redirectee.filename; - redir_fd = redirect->redirectee.dest; -! redirector = redirect->redirector.dest; - ri = redirect->instruction; - - if (redirect->flags & RX_INTERNAL) -*************** -*** 670,680 **** - return (AMBIGUOUS_REDIRECT); - else if (redirectee_word[0] == '-' && redirectee_word[1] == '\0') - { - rd.dest = 0; -! new_redirect = make_redirection (redirector, r_close_this, rd); - } - else if (all_digits (redirectee_word)) - { - if (legal_number (redirectee_word, &lfd) && (int)lfd == lfd) - rd.dest = lfd; - else ---- 677,689 ---- - return (AMBIGUOUS_REDIRECT); - else if (redirectee_word[0] == '-' && redirectee_word[1] == '\0') - { -+ sd.dest = redirector; - rd.dest = 0; -! new_redirect = make_redirection (sd, r_close_this, rd, 0); - } - else if (all_digits (redirectee_word)) - { -+ sd.dest = redirector; - if (legal_number (redirectee_word, &lfd) && (int)lfd == lfd) - rd.dest = lfd; - else -*************** -*** 682,704 **** - switch (ri) - { - case r_duplicating_input_word: -! new_redirect = make_redirection (redirector, r_duplicating_input, rd); - break; - case r_duplicating_output_word: -! new_redirect = make_redirection (redirector, r_duplicating_output, rd); - break; - case r_move_input_word: -! new_redirect = make_redirection (redirector, r_move_input, rd); - break; - case r_move_output_word: -! new_redirect = make_redirection (redirector, r_move_output, rd); - break; - } - } - else if (ri == r_duplicating_output_word && redirector == 1) - { - rd.filename = make_bare_word (redirectee_word); -! new_redirect = make_redirection (1, r_err_and_out, rd); - } - else - { ---- 691,714 ---- - switch (ri) - { - case r_duplicating_input_word: -! new_redirect = make_redirection (sd, r_duplicating_input, rd, 0); - break; - case r_duplicating_output_word: -! new_redirect = make_redirection (sd, r_duplicating_output, rd, 0); - break; - case r_move_input_word: -! new_redirect = make_redirection (sd, r_move_input, rd, 0); - break; - case r_move_output_word: -! new_redirect = make_redirection (sd, r_move_output, rd, 0); - break; - } - } - else if (ri == r_duplicating_output_word && redirector == 1) - { -+ sd.dest = 1; - rd.filename = make_bare_word (redirectee_word); -! new_redirect = make_redirection (sd, r_err_and_out, rd, 0); - } - else - { -*************** -*** 730,736 **** - redirectee = new_redirect->redirectee.filename; - - redir_fd = new_redirect->redirectee.dest; -! redirector = new_redirect->redirector; - ri = new_redirect->instruction; - - /* Overwrite the flags element of the old redirect with the new value. */ ---- 740,746 ---- - redirectee = new_redirect->redirectee.filename; - - redir_fd = new_redirect->redirectee.dest; -! redirector = new_redirect->redirector.dest; - ri = new_redirect->instruction; - - /* Overwrite the flags element of the old redirect with the new value. */ -*************** -*** 1021,1026 **** ---- 1031,1037 ---- - { - int new_fd, clexec_flag; - REDIRECT *new_redirect, *closer, *dummy_redirect; -+ REDIRECTEE sd; - - new_fd = fcntl (fd, F_DUPFD, (fdbase < SHELL_FD_BASE) ? SHELL_FD_BASE : fdbase+1); - if (new_fd < 0) -*************** -*** 1034,1049 **** - - clexec_flag = fcntl (fd, F_GETFD, 0); - - rd.dest = 0; -! closer = make_redirection (new_fd, r_close_this, rd); - closer->flags |= RX_INTERNAL; - dummy_redirect = copy_redirects (closer); - - rd.dest = new_fd; - if (fd == 0) -! new_redirect = make_redirection (fd, r_duplicating_input, rd); - else -! new_redirect = make_redirection (fd, r_duplicating_output, rd); - new_redirect->flags |= RX_INTERNAL; - if (clexec_flag == 0 && fd >= 3 && new_fd >= SHELL_FD_BASE) - new_redirect->flags |= RX_SAVCLEXEC; ---- 1045,1062 ---- - - clexec_flag = fcntl (fd, F_GETFD, 0); - -+ sd.dest = new_fd; - rd.dest = 0; -! closer = make_redirection (sd, r_close_this, rd, 0); - closer->flags |= RX_INTERNAL; - dummy_redirect = copy_redirects (closer); - -+ sd.dest = fd; - rd.dest = new_fd; - if (fd == 0) -! new_redirect = make_redirection (sd, r_duplicating_input, rd, 0); - else -! new_redirect = make_redirection (sd, r_duplicating_output, rd, 0); - new_redirect->flags |= RX_INTERNAL; - if (clexec_flag == 0 && fd >= 3 && new_fd >= SHELL_FD_BASE) - new_redirect->flags |= RX_SAVCLEXEC; -*************** -*** 1066,1073 **** - to save others. */ - if (fd >= SHELL_FD_BASE && ri != r_close_this && clexec_flag) - { - rd.dest = new_fd; -! new_redirect = make_redirection (fd, r_duplicating_output, rd); - new_redirect->flags |= RX_INTERNAL; - - add_exec_redirect (new_redirect); ---- 1079,1087 ---- - to save others. */ - if (fd >= SHELL_FD_BASE && ri != r_close_this && clexec_flag) - { -+ sd.dest = fd; - rd.dest = new_fd; -! new_redirect = make_redirection (sd, r_duplicating_output, rd, 0); - new_redirect->flags |= RX_INTERNAL; - - add_exec_redirect (new_redirect); -*************** -*** 1096,1104 **** - int fd; - { - REDIRECT *closer; - - rd.dest = 0; -! closer = make_redirection (fd, r_close_this, rd); - closer->flags |= RX_INTERNAL; - closer->next = redirection_undo_list; - redirection_undo_list = closer; ---- 1110,1120 ---- - int fd; - { - REDIRECT *closer; -+ REDIRECTEE sd; - -+ sd.dest = fd; - rd.dest = 0; -! closer = make_redirection (sd, r_close_this, rd, 0); - closer->flags |= RX_INTERNAL; - closer->next = redirection_undo_list; - redirection_undo_list = closer; -*************** -*** 1154,1159 **** - int n; - - for (n = 0, rp = redirs; rp; rp = rp->next) -! n += stdin_redirection (rp->instruction, rp->redirector); - return n; - } ---- 1170,1175 ---- - int n; - - for (n = 0, rp = redirs; rp; rp = rp->next) -! n += stdin_redirection (rp->instruction, rp->redirector.dest); - return n; - } diff --git a/ddd1 b/ddd1 deleted file mode 100644 index 7674dc451..000000000 --- a/ddd1 +++ /dev/null @@ -1,118 +0,0 @@ -*** array.c 2009-03-29 17:21:09.000000000 -0400 ---- array.c.save3 2009-03-28 18:16:49.000000000 -0400 -*************** -*** 56,59 **** ---- 56,84 ---- - static char *array_to_string_internal __P((ARRAY_ELEMENT *, ARRAY_ELEMENT *, char *, int)); - -+ static ARRAY *lastarray = 0; -+ static ARRAY_ELEMENT *lastref = 0; -+ -+ #define IS_LASTREF(a) ((a) == lastarray) -+ -+ #define INVALIDATE_LASTREF(a) \ -+ do { \ -+ if ((a) == lastarray) { \ -+ lastarray = 0; \ -+ lastref = 0; \ -+ } \ -+ } while (0) -+ -+ #define SET_LASTREF(a, e) \ -+ do { \ -+ lastarray = (a); \ -+ lastref = (e); \ -+ } while (0) -+ -+ #define UNSET_LASTREF() \ -+ do { \ -+ lastarray = 0; \ -+ lastref = 0; \ -+ } while (0) -+ - ARRAY * - array_create() -*************** -*** 88,91 **** ---- 113,117 ---- - a->max_index = -1; - a->num_elements = 0; -+ INVALIDATE_LASTREF(a); - } - -*************** -*** 186,189 **** ---- 212,216 ---- - return ((ARRAY_ELEMENT *)NULL); - -+ INVALIDATE_LASTREF(a); - for (i = 0, ret = ae = element_forw(a->head); ae != a->head && i < n; ae = element_forw(ae), i++) - ; -*************** -*** 264,267 **** ---- 291,295 ---- - a->max_index = element_index(a->head->prev); - -+ INVALIDATE_LASTREF(a); - return (a->num_elements); - } -*************** -*** 595,598 **** ---- 623,627 ---- - a->max_index = i; - a->num_elements++; -+ SET_LASTREF(a, new); - return(0); - } -*************** -*** 608,618 **** ---- 637,650 ---- - free(element_value(ae)); - ae->value = v ? savestring(v) : (char *)NULL; -+ SET_LASTREF(a, ae); - return(0); - } else if (element_index(ae) > i) { - ADD_BEFORE(ae, new); - a->num_elements++; -+ SET_LASTREF(a, new); - return(0); - } - } -+ INVALIDATE_LASTREF(a); - return (-1); /* problem */ - } -*************** -*** 638,641 **** ---- 670,674 ---- - if (i == array_max_index(a)) - a->max_index = element_index(ae->prev); -+ INVALIDATE_LASTREF(a); - return(ae); - } -*************** -*** 655,661 **** - if (a == 0 || array_empty(a)) - return((char *) NULL); -! for (ae = element_forw(a->head); ae != a->head; ae = element_forw(ae)) -! if (element_index(ae) == i) - return(element_value(ae)); - return((char *) NULL); - } ---- 688,704 ---- - if (a == 0 || array_empty(a)) - return((char *) NULL); -! if (i > array_max_index(a)) -! return ((char *)NULL); -! /* Keep roving pointer into array to optimize sequential access */ -! if (lastref && IS_LASTREF(a)) -! ae = (i >= element_index(lastref)) ? lastref : element_forw(a->head); -! else -! ae = element_forw(a->head); -! for ( ; ae != a->head; ae = element_forw(ae)) -! if (element_index(ae) == i) { -! SET_LASTREF(a, ae); - return(element_value(ae)); -+ } -+ UNSET_LASTREF(); - return((char *) NULL); - } diff --git a/lib/readline/copyright-comment b/lib/readline/copyright-comment deleted file mode 100644 index eea44d2e4..000000000 --- a/lib/readline/copyright-comment +++ /dev/null @@ -1,12 +0,0 @@ - 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 . diff --git a/lib/readline/copyright-history b/lib/readline/copyright-history deleted file mode 100644 index 6e7422e55..000000000 --- a/lib/readline/copyright-history +++ /dev/null @@ -1,12 +0,0 @@ - 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 . diff --git a/menu-complete-state b/menu-complete-state deleted file mode 100644 index f36a54cdb..000000000 --- a/menu-complete-state +++ /dev/null @@ -1,59 +0,0 @@ -*** ../bash-4.0-patched/lib/readline/complete.c 2009-01-22 15:15:14.000000000 -0500 ---- lib/readline/complete.c 2009-08-26 17:15:59.000000000 -0400 -*************** -*** 2209,2213 **** - /* The first time through, we generate the list of matches and set things - up to insert them. */ -! if (rl_last_func != rl_menu_complete) - { - /* Clean up from previous call, if any. */ ---- 2252,2256 ---- - /* The first time through, we generate the list of matches and set things - up to insert them. */ -! if (rl_last_func != rl_old_menu_complete) - { - /* Clean up from previous call, if any. */ -*************** -*** 2221,2224 **** ---- 2264,2269 ---- - rl_completion_invoking_key = invoking_key; - -+ RL_SETSTATE(RL_STATE_COMPLETING); -+ - /* Only the completion entry function can change these. */ - set_completion_defaults ('%'); -*************** -*** 2260,2266 **** ---- 2305,2314 ---- - orig_text = (char *)0; - completion_changed_buffer = 0; -+ RL_UNSETSTATE(RL_STATE_COMPLETING); - return (0); - } - -+ RL_UNSETSTATE(RL_STATE_COMPLETING); -+ - for (match_list_size = 0; matches[match_list_size]; match_list_size++) - ; -*************** -*** 2338,2341 **** ---- 2386,2391 ---- - full_completion = 0; - -+ RL_SETSTATE(RL_STATE_COMPLETING); -+ - /* Only the completion entry function can change these. */ - set_completion_defaults ('%'); -*************** -*** 2379,2385 **** ---- 2429,2438 ---- - orig_text = (char *)0; - completion_changed_buffer = 0; -+ RL_UNSETSTATE(RL_STATE_COMPLETING); - return (0); - } - -+ RL_UNSETSTATE(RL_STATE_COMPLETING); -+ - for (match_list_size = 0; matches[match_list_size]; match_list_size++) - ;