From: Chet Ramey Date: Wed, 27 Mar 2013 01:17:40 +0000 (-0400) Subject: initial fork from devel branch X-Git-Tag: bash-4.3-alpha~2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e65506dd94ecdd7288dd2f9c97b54ffac5a9fc01;p=thirdparty%2Fbash.git initial fork from devel branch --- diff --git a/CHANGES-4.3 b/CHANGES-4.3 deleted file mode 100644 index 3ef846056..000000000 --- a/CHANGES-4.3 +++ /dev/null @@ -1,553 +0,0 @@ -This document details the changes between this version, bash-4.3-alpha, -and the previous version, bash-4.2-release. - -1. Changes to Bash - -a. Fixed several bugs concerning incomplete bracket expressions in filename - generation (globbing) patterns. - -b. Fixed a bug with single quotes and WORD in ${param op WORD} when running - in Posix mode. - -c. Fixed a bug that caused the pattern removal and pattern substitution word - expansions and case statement word expansion to not match the empty string. - -d. Fixed a bug that caused the tzset() function to not work after changing - the TZ enviroment variable. - -e. Fixed a bug that caused the RHS of an assignment statement to undergo - word splitting when it contained an unquoted $@. - -f. Fixed bugs that caused the shell to not react to a SIGINT sent while - waiting for a child process to exit. - -g. Bash doesn't try to run things in a signal handler context when it gets a - signal (SIGINT/SIGHUP/etc) while reading input using readline but still - be responsive to terminating signals. - -h. Fixed a bug that caused bash to go into an infinite loop if a filename - to be matched contained an invalid multibyte character. - -i. Fixed a bug that caused PS4 to end up being truncated if it is longer - than 128 bytes. - -j. Fixed a bug that caused brace expansion to not skip over double-quoted - command substitution. - -k. System-specific updates for: DJGPP, HP/UX, Mac OS X - -l. Fixed a bug in displaying commands that caused redirections to be associated - with the wrong part of the command. - -m. Fixed the coproc cleanup to unset the appropriate shell variables when a - coproc terminates. - -n. Fixed a bug that caused `fc' to dump core due to incorrect calculation of - the last history entry. - -o. Added workarounds for FreeBSD's implementation of faccessat/eaccess and - `test -x'. - -p. Fixed a bug that caused the shell to not match patterns containing - control-A. - -q. Fixed a bug that could result in doubled error messages when the `printf' - builtin got a write error. - -r. Fixed a bug that caused the shell to not correctly expand words containing - multiple consecutive quoted empty strings (""""""aa). - -s. Fixed a bug that caused the shell to not correctly parse multi-line - process substitutions containing comments and quoted strings. - -t. Fixed a problem with the bash malloc's internal idea of the top of the - memory heap that resulted in incorrect decisions to try to reduce the - break and give memory back to the kernel. - -u. There are changes to the expansions peformed on compound array assignments, - in an effort to make foo=( [ind1]=bar [ind2]=baz ) identical to - foo[ind1]=bar foo[ind2]=baz. - -v. Bash now reports an error if `read -a name' is used when `name' is an - existing associative array. - -w. Fixed a bug that allowed an attempted assignment to a readonly variable - in an arithmetic expression to not return failure. - -x. Fixed several bugs that caused completion functions to be invoked even when - the cursor was before the first word in the command. - -y. Fixed a bug that caused parsing a command substitution to overwrite the - parsing state associated with the complete input line. - -z. Fixed several bugs with the built-in snprintf replacement and field widths - and floating point. - -aa. Fixed a bug that caused incorrect offset calculations and input buffer - corruption when reading files longer than 2^31 bytes. - -bb. Fixed several bugs where bash performed arithmetic evaluation in contexts - where evaluation is suppressed. - -cc. Fixed a bug that caused bash to close FIFOs used for process substitution - too early when a shell function was executing, but protect against using - all file descriptors when the shell functions are invoked inside loops. - -dd. Added checks for printable (and non-printable) multibyte characters for - use in error messages. - -ee. Fixed a bug that caused ^O (operate-and-get-next) to not work correctly - at the end of the history list. - -ff. Fixed a bug that caused command-oriented history to incorrectly combine - here documents into one line. - -gg. Fixed a bug that caused importing SHELLOPTS from the environment into a - Posix-mode shell to print an error message and refuse to parse it. - -hh. Fixed a bug that caused the shell to delete an extra history entry when - using `history -s'. - -ii. Fixed a bug that caused floating-point exceptions and overflow errors - for the / and % arithmetic operators when using INTMAX_MIN and -1. - -jj. Fixed a bug that caused parsing errors when reading an arithmetic for - loop inside a command substitution. - -kk. Fixed a bug that caused a readonly function to be unset when unset was - called without the -f or -v option. - -ll. Fixed several bugs in the code that quotes characters special to regular - expressions when used in a quoted string on the RHS of the =~ operator - to the [[ command. - -mm. Fixed a bug that caused redirections to fail because the file descriptor - limit was set to a value less than 10. - -nn. Fixed a bug that caused the `read' builtin to execute code in a signal - handler context if read timed out. - -oo. Fixed a bug that caused extended globbing patterns to not match files - beginning with `.' correctly when a `.' was explicitly supplied in the - pattern. - -pp. Fixed a bug that caused key sequences longer than two characters to not - work when used with `bind -x'. - -qq. Fixed a bug that resulted in redefined functions having the wrong source - file names in BASH_SOURCE. - -rr. Fixed a bug that caused the read builtin to assign null strings to variables - when using `read -N', which caused core dumps when referenced - -ss. Fixed a bug that caused `bash -m script' to not enable job control while - running the script. - -tt. Fixed a bug that caused `printf -v var' to dump core when used with the - %b format code. - -uu. Fixed a bug that caused the shell to exit with the wrong status if -e was - active and the shell exited on a substitution error. - -vv. Fixed a bug that caused the shell to seg fault if an array variable with - the same name as an existing associative array was implicitly created by - an assignment (declare a[n]=b). - -ww. Fixed a bug that caused a redirection to misbehave if the number specified - for a file descriptor overflows an intmax_t. - -xx. Fixed several bugs with the handling of valid and invalid unicode character - values when used with the \u and \U escape sequences to printf and $'...'. - -yy. Fixed a bug that caused tildes to not be escaped in expanded filenames, - making them subject to later expansion. - -zz. When using the pattern substitution word expansion, bash now runs the - replacement string through quote removal, since it allows quotes in that - string to act as escape characters. This is not backwards compatible, so - it can be disabled by setting the bash compatibility mode to 4.2. - -aaa. Fixed the rest of the cases where the shell runs non-allowed code in a - signal handler context. - -bbb. Fixed a bug that caused spurious DEL characters (\177) to appear in - double-quoted expansion where the RHS is evaluated to the empty string. - -ccc. Fixed a bug that caused the use of the shell's internal random number - generator for temporary file names to perturb the random number - sequence. - -ddd. Fixed several bugs that caused `declare -g' to not set the right global - variables or to misbehave when declaring global indexed arrays. - -eee. Fixed a logic bug that caused extended globbing in a multibyte locale to - cause failures when using the pattern substititution word expansions. - -fff. Fixed a bug that caused the `lastpipe' option to corrupt the file - descriptor used to read the script. - -ggg. Fixed a bug that causes the shell to delete DEL characters in the - expanded value of variables used in the same quoted string as variables - that expand to nothing. - -hhh. Fixed a bug that caused the shell to assign the wrong value from an - assignment like (( x=7 )) when `x' was an existing array variable. - -iii. Fixed a bug that caused the shell to misbehave when generating sequences - and the boundary values overflow an intmax_t. - -jjj. Fixed a bug caused expansion errors if an expansion of "$@" appeared - next to another expansion (e.g.. "${@}${x}"). - -kkk. Fixed a potential buffer overflow bug when performing /dev/fd expansion. - -lll. Fixed a bug that resulted in an extra semicolon being added to compound - assignments when they were added to the history list. - -mmm. Fixed a bug that caused mapfile to read one extra line from the input. - -nnn. Fixed a bug that caused the mail checking code to use uninitialized - values. - -ooo. Fixed a bug that prevented history timestamps from being saved if the - history comment character is unset. - -ppp. Fixed a bug that caused the case-modifying expansions to not work with - multibyte characters. - -qqq. Fixed a bug that caused the edit-and-execute bindable readline command - to see the wrong data if invoked in the middle of a multi-line quoted - string. - -rrr. Fixed a bug that resulted in the shell returning the wrong exit status - for a background command on systems that recycle PIDs very quickly. - -sss. Fixed a bug that caused asynchronous group commands to not run any EXIT - trap defined in the body of the command. - -ttt. Fixed a bug that caused `eval "... ; return"' to not clean up properly. - -uuu. Fixed a bug that caused the shell to dump core if `read' reads an escaped - IFS whitespace character. - -vvv. Fixed a bug that caused BASH_COMMAND to be set to an incorrect value when - executing a (...) subshell. - -www. Fixed a couple of pointer aliasing bugs with the token string in arithmetic - evaluation. - -xxx. Fixed a bug with parsing multi-line command substitutions when reading - the `do' keyword followed by whitespace. - -yyy. Fixed a bug that caused the shell to seg fault if the time given to the - printf %(...)T format overflowed the value accepted by localtime(3). - -zzz. Fixed a problem with displaying help topics in two columns when the - translated text contained multibyte characters. - -aaaa. Fixed a bug with the extended globbing pattern matcher where a `*' was - followed by a negated extended glob pattern. - -bbbb. Fixed a race condition with short-lived coproc creation and reaping that - caused the child process to be reaped before the various coproc shell - variables were initialized. - -cccc. Fixed a bug where turning off `errexit' in command substitution subshells - was not reflected in $SHELLOPTS. - -dddd. Partially fixed an inconsistency in how the shell treated shell - functions run from an EXIT trap. - -eeee. Fixed a bug in how the shell invalidated FIFOs used for process - substitution when executing a pipeline (once rather than in every child). - -ffff. Fixed a bug that occurred when expanding a special variable ($@, $*) - within double quotes and the expansion resulted in an empty string. - -gggg. Fixed bugs with executing a SIGCHLD trap handler to make sure that it's - executed once per exited child. - -hhhh. Fixed a bug that caused `declare' and `test' to find variables that - had been given attributes but not assigned values. Such variables are - not set. - -iiii. Fixed a bug that caused commands in process substitutions to not look in - the local temporary environment when performing word expansions. - -jjjj. Fixed several problems with globstar expansions (**/**) returning null - filenames and multiple instances of the same pathname. - -kkkk. Fixed an oversight that did not allow the exit status of `coproc' to - be inverted using `!'. - -llll. Fixed a bug that caused the -e option to be re-enabled using `set -e' - even when executing in a context where -e is ignored. - -mmmm. Fixed a (mostly theoretical) bug with input lines longer than SIZE_MAX. - -nnnn. Fixed a bug that could result in double evaluation of command - substitutions when they appear in failed redirections. - -oooo. Fixed a bug that could cause seg faults during `mapfile' callbacks if - the callback unsets the array variable mapfile is using. - -pppp. Fixed several problems with variable assignments using ${var:=value} - when the variable assignment is supposed to have side effects. - -qqqq. Fixed a bug that caused a failure of an assignment statement preceding a - builtin caused the next invocation of a special builtin to exit the shell. - -rrrr. Fixed several problems with IFS when it appears in the temporary environment - and is used in redirections. - -ssss. Fixed a problem that caused IFS changes using ${IFS:=value} to modify - how preceding expansions were split. - -tttt. Fixed a problem that caused subshells to not run an EXIT trap they set. - -uuuu. Fixed a problem that caused shells started in posix mode to attempt to - import shell functions with invalid names from the environment. We now - print a warning. - -vvvv. Worked around a kernel problem that caused SIGCHLD to interrupt open(2) - on a FIFO used for process substitution, even if the SIGCHLD handler was - installed with the SA_RESTART flag. - -wwww. Fixed a problem that resulted in inconsistent expansion of $* and ${a[*]}. - -xxxx. Fixed a problem that caused `read -t' to crash when interrupted by - SIGINT. - -yyyy. Fixed a problem that caused pattern removal to fail randomly because the - pattern matcher read beyond the end of a string. - -zzzz. Fixed a bug that caused core dumps when shell functions tried to create - local shadow copies of special variables like GROUPS. - -aaaaa. Fixed a bug that caused SIGTERM to be occasionally lost by children of - interactive shells when it arrived before the child process reset the - handler from SIG_DFL. - -bbbbb. Fixed a bug that caused redirections like <&n- to leave file descriptor - n closed if executed with a builtin command. - -2. Changes to Readline - -a. Fixed a bug that did not allow the `dd', `cc', or `yy' vi editing mode - commands to work on the entire line. - -b. Fixed a bug that caused redisplay problems with prompts longer than 128 - characters and history searches. - -c. Fixed a bug that caused readline to try and run code to modify its idea - of the screen size in a signal handler context upon receiving a SIGWINCH. - -d. Fixed a bug that caused the `meta' key to be enabled beyond the duration - of an individual call top readline(). - -e. Added a workaround for a wcwidth bug in Mac OS X that caused readline's - redisplay to mishandle zero-width combining characters. - -f. Fixed a bug that caused readline to `forget' part of a key sequence when - a multiple-key sequence caused it to break out of an incremental search. - -g. Fixed bugs that caused readline to execute code in a signal handler - context if interrupted while reading from the file system during completion. - -h. Fixed a bug that caused readline to `forget' part of a key sequence when - reading an unbound multi-character key sequence. - -i. Fixed a bug that caused Readline's signal handlers to be installed beyond - the bounds of a single call to readline(). - -j. Fixed a bug that caused the `.' command to not redo the most recent `R' - command in vi mode. - -k. Fixed a bug that caused ignoring case in completion matches to result in - readline using the wrong match. - -l. Paren matching now works in vi insert mode. - -m. Fix menu-completion to make show-all-if-ambiguous and menu-complete-display-prefix - work together. - -n. Fixed a bug that didn't allow the `cc', `dd', or `yy' commands to be redone - in vi editing mode. - -o. Fixed a bug that caused the filename comparison code to not compare - multibyte characters correctly when using case-sensitive or case-mapping - comparisons. - -p. Fixed the input reading loop to call the input hook function only when there - is no terminal input available. - -q. Fixed a bug that caused binding a macro to a multi-character key sequence - where the sequence and macro value share a common prefix to not perform - the macro replacement. - -r. Fixed several redisplay errors with multibyte characters and prompts - containing invisible characters when using horizontal scrolling. - -s. Fixed a bug that caused redisplay errors when trying to overwrite - existing characters using multibyte characters. - -3. New Features in Bash - -a. The `helptopic' completion action now maps to all the help topics, not just - the shell builtins. - -b. The `help' builtin no longer does prefix substring matching, so `help read' - does not match `readonly'. - -c. The shell can be compiled to not display a message about processes that - terminate due to SIGTERM. - -d. Non-interactive shells now react to the setting of checkwinsize and set - LINES and COLUMNS after a foreground job exits. - -e. There is a new shell option, `globasciiranges', which, when set to on, - forces globbing range comparisons to use character ordering as if they - were run in the C locale. - -f. There is a new shell option, `direxpand', which makes filename completion - expand variables in directory names in the way bash-4.1 did. - -g. In Posix mode, the `command' builtin does not change whether or not a - builtin it shadows is treated as an assignment builtin. - -h. The `return' and `exit' builtins accept negative exit status arguments. - -i. The word completion code checks whether or not a filename containing a - shell variable expands to a directory name and appends `/' to the word - as appropriate. The same code expands shell variables in command names - when performing command completion. - -j. In Posix mode, it is now an error to attempt to define a shell function - with the same name as a Posix special builtin. - -k. When compiled for strict Posix conformance, history expansion is disabled - by default. - -l. The history expansion character (!) does not cause history expansion when - followed by the closing quote in a double-quoted string. - -m. `complete' and its siblings compgen/compopt now takes a new `-o noquote' - option to inhibit quoting of the completions. - -n. Setting HISTSIZE to a value less than zero causes the history list to be - unlimited (setting it 0 zero disables the history list). - -o. Setting HISTFILESIZE to a value less than zero causes the history file size - to be unlimited (setting it to 0 causes the history file to be truncated - to zero size). - -p. The `read' builtin now skips NUL bytes in the input. - -q. There is a new `bind -X' option to print all key sequences bound to Unix - commands. - -r. When in Posix mode, `read' is interruptible by a trapped signal. After - running the trap handler, read returns 128+signal and throws away any - partially-read input. - -s. The command completion code skips whitespace and assignment statements - before looking for the command name word to be completed. - -t. The build process has a new mechanism for constructing separate help files - that better reflects the current set of compilation options. - -u. The -nt and -ot options to test now work with files with nanosecond - timestamp resolution. - -v. The shell saves the command history in any shell for which history is - enabled and HISTFILE is set, not just interactive shells. - -w. The shell has `nameref' variables and new -n(/+n) options to declare and - unset to use them, and a `test -R' option to test for them. - -x. The shell now allows assigning, referencing, and unsetting elements of - indexed arrays using negative subscripts (a[-1]=2, echo ${a[-1]}) which - count back from the last element of the array. - -y. The {x} - Copyright (C) 19yy - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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If not, see . - -Also add information on how to contact you by electronic and paper mail. - - If the program does terminal interaction, make it output a short -notice like this when it starts in an interactive mode: - - Copyright (C) - This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. - This is free software, and you are welcome to redistribute it - under certain conditions; type `show c' for details. - -The hypothetical commands `show w' and `show c' should show the appropriate -parts of the General Public License. Of course, your program's commands -might be different; for a GUI interface, you would use an "about box". - - You should also get your employer (if you work as a programmer) or school, -if any, to sign a "copyright disclaimer" for the program, if necessary. -For more information on this, and how to apply and follow the GNU GPL, see -. - - The GNU General Public License does not permit incorporating your program -into proprietary programs. If your program is a subroutine library, you -may consider it more useful to permit linking proprietary applications with -the library. If this is what you want to do, use the GNU Lesser General -Public License instead of this License. But first, please read -. diff --git a/NEWS-4.3 b/NEWS-4.3 deleted file mode 100644 index 94e309312..000000000 --- a/NEWS-4.3 +++ /dev/null @@ -1,164 +0,0 @@ -This is a terse description of the new features added to bash-4.3 since -the release of bash-4.2. As always, the manual page (doc/bash.1) is -the place to look for complete descriptions. - -1. New Features in Bash - -a. The `helptopic' completion action now maps to all the help topics, not just - the shell builtins. - -b. The `help' builtin no longer does prefix substring matching, so `help read' - does not match `readonly'. - -c. The shell can be compiled to not display a message about processes that - terminate due to SIGTERM. - -d. Non-interactive shells now react to the setting of checkwinsize and set - LINES and COLUMNS after a foreground job exits. - -e. There is a new shell option, `globasciiranges', which, when set to on, - forces globbing range comparisons to use character ordering as if they - were run in the C locale. - -f. There is a new shell option, `direxpand', which makes filename completion - expand variables in directory names in the way bash-4.1 did. - -g. In Posix mode, the `command' builtin does not change whether or not a - builtin it shadows is treated as an assignment builtin. - -h. The `return' and `exit' builtins accept negative exit status arguments. - -i. The word completion code checks whether or not a filename containing a - shell variable expands to a directory name and appends `/' to the word - as appropriate. The same code expands shell variables in command names - when performing command completion. - -j. In Posix mode, it is now an error to attempt to define a shell function - with the same name as a Posix special builtin. - -k. When compiled for strict Posix conformance, history expansion is disabled - by default. - -l. The history expansion character (!) does not cause history expansion when - followed by the closing quote in a double-quoted string. - -m. `complete' and its siblings compgen/compopt now takes a new `-o noquote' - option to inhibit quoting of the completions. - -n. Setting HISTSIZE to a value less than zero causes the history list to be - unlimited (setting it 0 zero disables the history list). - -o. Setting HISTFILESIZE to a value less than zero causes the history file size - to be unlimited (setting it to 0 causes the history file to be truncated - to zero size). - -p. The `read' builtin now skips NUL bytes in the input. - -q. There is a new `bind -X' option to print all key sequences bound to Unix - commands. - -r. When in Posix mode, `read' is interruptible by a trapped signal. After - running the trap handler, read returns 128+signal and throws away any - partially-read input. - -s. The command completion code skips whitespace and assignment statements - before looking for the command name word to be completed. - -t. The build process has a new mechanism for constructing separate help files - that better reflects the current set of compilation options. - -u. The -nt and -ot options to test now work with files with nanosecond - timestamp resolution. - -v. The shell saves the command history in any shell for which history is - enabled and HISTFILE is set, not just interactive shells. - -w. The shell has `nameref' variables and new -n(/+n) options to declare and - unset to use them, and a `test -R' option to test for them. - -x. The shell now allows assigning, referencing, and unsetting elements of - indexed arrays using negative subscripts (a[-1]=2, echo ${a[-1]}) which - count back from the last element of the array. - -y. The {x}