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authorJari Aalto <jari.aalto@cante.net>1996-08-26 18:22:31 +0000
committerJari Aalto <jari.aalto@cante.net>2009-09-12 16:46:49 +0000
commit726f63884db0132f01745f1fb4465e6621088ccf (patch)
tree6c2f7765a890a97e0e513cb539df43283a8f7c4d /RELEASE
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+This file details the changes between the previous release of bash (1.13.5)
+and this release (1.14.0).
+
+1. New Features in Bash
+
+a. The source has been reorganized: nearly all extern function
+ declarations have been moved to header files, function prototypes
+ have been added to most header files, function declarations have
+ been moved to file scope, dead code has been removed, the
+ bash history code has been isolated in bashhist.[ch], and several
+ new header files have been created
+
+b. `set -o posix' puts bash into Posix.2 mode
+
+c. If $POSIX_PEDANTIC exists in the initial environment or is assigned
+ a value, bash enters Posix.2 mode
+
+d. Bash sets $OSTYPE to a string describing the UNIX version
+
+e. The features.info file was completely rewritten and now reflects
+ the current state of things
+
+f. A manual page for readline is in documentation/readline.{3,ps}
+
+g. The test builtin emulates /dev/fd/x for systems without /dev/fd
+
+h. `dirs' has -n and +n options to access members of the directory stack
+
+i. Prompt string expansion handles invisible characters in the prompt;
+ \[ and \] are used (and required) to start and end sequences of
+ invisible chars
+
+j. NO_PROMPT_VARS has been removed
+
+k. New machine descriptions have been added: IBM AIX/ESA, NEC EWS, NetBSD,
+ FreeBSD, QNX 4.2, concurrent, MIPS SVR4.2, Lynx 2.1
+
+l. RESTRICTED_SHELL is no longer defined by default in config.h
+
+m. The version string in $BASH_VERSION has changed to dist.patch(build)
+
+n. $history_control has been renamed to $HISTCONTROL and now takes the
+ value `ignoreboth' ($history_control is still accepted for backwards
+ compatibility)
+
+o. There is a new program `bashbug' for reporting bugs. Eventually I will
+ probably switch to gnats.
+
+p. auto_resume can take the values `exact' and `substring'
+
+q. `set -P' (`set -o physical') enables the same physical view of the
+ file system that `nolinks' enables (`nolinks' will remain for one
+ more release)
+
+r. There is a `mkmachtype' program to generate a GNU-style machine type
+ string (e.g., `sparc-sun-sunos4.1.2') suitable for assigning to
+ $MACHTYPE
+
+s. The variable $HISTCMD returns the current history number
+
+t. Variables in directory names are now expanded while doing completion
+
+u. The test suite has been expanded and is runnable as a regression test
+ with `make tests'
+
+v. `bye' is no longer a builtin synonym for `exit'
+
+w. The ksh `select' control construct has been implemented
+
+x. The `ignoreeof' attribute can be inherited if $IGNOREEOF is exported
+
+y. The `USG-style' echo is now a configuration option. Define
+ DEFAULT_ECHO_TO_USG for default \-interpretation without the -e flag
+
+z. There is a copy of an article I wrote about bash for the Linux
+ Journal in documentation/article.{ms,ps}
+
+aa. The `pwd' builtin now obeys the setting of `set -o physical' (`nolinks')
+
+bb. Process substitution is no longer performed when the shell is in
+ `posix mode'
+
+cc. Users may change the debugging and optimization flags to cc by specifying
+ CFLAGS to make
+
+2. New Features in Readline
+
+a. Readline now understands sequences of invisible characters in the prompt
+ string, as long as they are escaped (e.g., by the bash \[ and \] escapes)
+
+b. A `set keymap' variable assignment
+
+c. A `bell-style' variable that can be set to `visible', `audio', or `none'
+
+d. A `show-all-if-ambiguous' variable, which causes non-unique completion
+ to immediately list the possible completions
+
+e. An `output-meta' variable to make readline directly output chars
+ with the eighth bit set
+
+f. New bindable readline commands: kill-whole-line, tilde-expand,
+ vi-redo, vi-tilde-expand, emacs-editing-mode,
+ non-incremental-forward-search-history-again,
+ non-incremental-reverse-search-history-again
+
+g. New history-search-forward and history-search-backward to search for
+ the characters between the start of the current line and point
+
+h. Readline takes the name of the startup file from the INPUTRC variable
+ before defaulting to ~/.inputrc
+
+i. isearch no longer finds identical lines multiple times in succession
+
+j. M-C-H bound to backward-kill-word in emacs mode
+
+k. M-~ bound to tilde-expand in emacs mode
+
+l. History expansion is now fully csh-compatible: missing modifiers and
+ substitutions have been added, and bugs fixed
+
+m. When asking whether or not to display the possible completions, readline
+ now accepts space as equivalent to `y' and rubout for `n'
+
+n. Readline now attempts to find and bind the arrow keys into the vi mode
+ movement keymap
+
+3. Bugs fixed in Bash
+
+a. Portability fixes: `index' and `rindex' are gone completely, many
+ OS-specific defines have been replaced with feature-test macros,
+ the use of alloca has been reduced, and other platform-specific fixes
+ (e.g. cray) have been made
+
+b. The man page has been fixed up and brought up to date
+
+c. Speed improvements: here documents, variable expansion, history
+ expansion, command substitution
+
+d. If history is stifled, the history list replaces the history file at
+ exit
+
+e. Asynchronous jobs re-run with fc -s now print the job number
+
+f. Output redirections do not perform filename expansion in Posix.2 mode
+ when the shell is not interactive
+
+g. operate_and_get_next now works on the most recent line even if the
+ history is unstifled
+
+h. $PROMPT_COMMAND execution no longer causes recursive invocations
+ of yyparse()
+
+i. An error message is printed if job control initialization fails
+
+j. A command found in $PATH from the temporary environment is not hashed
+
+k. Errors display the name of the script if the shell is not interactive
+
+l. Fixed expression evaluation so blank expressions return 0
+
+m. Fixed a bug that caused SIGINT and SIGQUIT not to be ignored in some
+ asynchronous children
+
+n. Pipes used for /dev/fd process substitution are now closed on errors
+
+o. Fixed /dev/null redirection so that ( list ) subshells inherit the
+ `stdin-has-been-redirected' flag as in sh
+
+p. Process substitution now works only when unquoted
+
+q. Fixed a bug where the async flag was added inappropriately in a command
+ like `a;b;c;d &'
+
+r. Fixed off-by-one bug which caused negative history offsets in `fc' to
+ be wrong
+
+s. Shell now remembers mail dates at startup on all systems
+
+t. Posix systems without job control no longer create so many zombies
+
+u. $ENV is now sourced by shells forked to execute scripts without a
+ leading `#!' line
+
+v. Non-root users can now use the `unlimited' argument to ulimit and have
+ the resource value set to the hard limit
+
+w. Made bash more sh-compatible by assigning the first argument after
+ `-c command' to $0
+
+x. Fixed mail checking bug to note that *new* mail has arrived
+
+y. Fixed off-by-one error in mailcheck.c:free_mail_files()
+
+z. Fixed a bug where command strings passed to `bash -c' would be truncated
+ after executing the first disk command in the string
+
+aa. Fixed a bug which caused redirections passed to executable commands with
+ input or output pipes to be closed before the command was executed
+
+bb. Fixed a bug which caused bash to search for files supplied on the command
+ line in the $PATH if the initial open failed, even if the names contained
+ a slash
+
+cc. The initial argument parsing was fixed up so that other options can
+ be supplied with -c (that is, `sh -ec command' now works as make
+ intends), and so `bash -o' lists all the shell options at startup.
+
+dd. Error messages are consistently prefixed with the name of the shell
+ or shell script when non-interactive.
+
+ee. Fixed up a problem with the `read' builtin that occurred when more
+ variables than arguments were supplied.
+
+ff. Unset the variables passed to `read' as arguments when EOF is
+ read from stdin (sh, Posix.2 compatibility).
+
+gg. Fixes to the command printing code to make the output of `type'
+ available as legal shell input.
+
+ii. Fixes so that command completion is attempted after all of the shell
+ command separator characters.
+
+jj. Fixes to the shell completion code so that it handles quoted characters
+ and substrings better.
+
+kk. Bash no longer looks through $PATH for a shell script passed as an
+ argument if the name contains slashes.
+
+ll. Bash now checks that the `name' in a `name[=value]' argument to `declare'
+ (and thus `typeset', `export', and `readonly') is a legal shell variable
+ name.
+
+4. Bugs fixed in Readline
+
+a. The ^W and ^U bindings in non-incremental search mode have been changed
+ to be closer to what Posix specifies
+
+b. Tries to initialize the keypad to enable the arrow keys
+
+c. Multiple words are now killed and yanked in the right order
+
+d. rl_read_init_file now reads filenames in a more regular order: the last
+ one read, $INPUTRC, then ~/.inputrc
+
+e. yank_nth_arg inserts a space in the right place in vi mode
+
+f. Fixed a bug in the history library that tried to write to a file opened
+ O_RDONLY
+
+g. Binding of `0' in vi command mode is now right
+
+h. The VISIBLE_STATS completion listing code now follows symlinks
+
+i. Memory allocated with alloca() is no longer passed to other functions
+
+j. Error messages are now printed for unrecognized history modifiers
+
+k. Fixed a problem with history library and `!#'; now it is more csh-like.
+
+l. Fixed a csh incompatibility in the history library: now only an end of
+ line or `?' terminates a ?string history search string.
+
+m. Fixed a problem with readline completion that sometimes caused possible
+ matches to be listed one per line when `show-all-if-ambiguous' was set.
+
+n. Fixed a problem in the readline display code that caused divide-by-zero
+ errors.
+
+o. Fixed an off-by-one error in the kill ring reallocation code.