+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
+ <ctype.h>.
+
+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
+ <ctype.h>.
+
+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<x' where 4242 is an out-of-range
+ file descriptor).
+
+cc. `printf', `echo -e', and the $'...' code now process only two hex digits
+ after a `\x' escape sequence for compatibility with other shells, and
+ the documentation was changed to note that the octal and hex escape
+ sequences result in an eight-bit value rather than strict ASCII.
+
+2. Changes to Readline
+
+a. The completion code now attempts to do a better job of preserving the
+ case of the word the user typed if ignoring case in completions.
+
+b. Readline defaults to not echoing the input and lets the terminal
+ initialization code enable echoing if there is a controlling terminal.
+
+c. The key binding code now processes only two hex digits after a `\x'
+ escape sequence, and the documentation was changed to note that the
+ octal and hex escape sequences result in an eight-bit value rather
+ than strict ASCII.
+
+3. New Features in Bash
+
+a. The builtin `ulimit' now takes two new non-numeric arguments: `hard',
+ meaning the current hard limit, and `soft', meaning the current soft
+ limit, in addition to `unlimited'
+
+b. `ulimit' now prints the option letter associated with a particular
+ resource when printing more than one limit.
+
+c. `ulimit' prints `hard' or `soft' when a value is not `unlimited' but is
+ one of RLIM_SAVED_MAX or RLIM_SAVED_CUR, respectively.
+
+4. New Features in Readline
+
+a. New bindable variable `history-preserve-point'. If set, the history
+ code attempts to place the user at the same location on each history
+ line retrived with previous-history or next-history.
+
+------------------------------------------------------------------------------
+This document details the changes between this version, bash-2.05a-alpha1,
+and the previous version, bash-2.05-release.
+
+1. Changes to Bash
+
+a. Better checks in the redirection code for write errors.
+
+b. bashbug now uses $TMPDIR, defaulting to /tmp, and uses mktemp(1) more
+ portably.
+
+c. System-specific configuration changes for: Interix, OpenBSD, FreeBSD,
+ MacOS X.
+
+d. Some more `const' cleanups through the code.
+
+e. Fixed a typo in the /dev/fd redirection code, better checks for valid
+ numeric fds in /dev/fd.
+
+f. Fixed many parts of the shell to handle integer overflow more gracefully
+ and to do more stringent checks for valid numbers.
+
+g. Fixed mksignames to include config.h.
+
+h. Fixed an uninitialized variable problem that could cause the shell to core
+ dump when replacing characters in a string.
+
+i. New mechanism for updating the patch level when official patches are
+ released (patchlevel.h).
+
+j. configure.in changed to no longer require external files _distribution and
+ _patchlevel.
+
+k. Fixed non-interactive shell initialization problem when bash started as
+ `bash -i filename'.
+
+l. Fixed printf builtin conversion error handling to be POSIX.2-conformant.
+
+m. autoconf-2.52 is now used to build configure; autoconf-2.50 or newer is
+ required. Some of the bash-specific macros were removed, since they are
+ now standard.
+
+n. Startup files and files read with source or `.' are no longer required to
+ be regular files.
+
+o. Fixed core dump in builtin printf when user-supplied precision or field
+ width is 0.
+
+p. Fixed builtin printf to treat a negative field width as a positive field
+ width with left-justification.
+
+r. New unwind-protect implementation from Paul Eggert.
+
+s. Fixed an inadvertently-unclosed comment in the bash completion code that
+ caused programmable completions to not add trailing slashes or spaces to
+ completions.
+
+t. Fixed the process substitution code to cope better when stdin is closed.
+
+v. Fixes, mostly from Paul Eggert, for a few possible buffer overflows in
+ the shell.
+
+w. Fixes from Paul Eggert to avoid most of the type casts in the shell code,
+ and use more appropriate types for a number of variables.
+
+x. Command substition no longer inherits the DEBUG trap.
+
+y. Some fixes to the process substition code on machines without /dev/fd so
+ that named pipes are not removed inappropriately.
+
+z. The loadable `getconf' builtin is now much more complete, and will become
+ part of the shell in the future.
+
+aa. The select command no longer terminates on a `return', so it can be used
+ to return from an enclosing function (as ksh does it).
+
+bb. Fixed the extended pattern matching code to behave better when presented
+ with incorrectly-formed patterns.
+
+cc. Some changes were made with the intent of making cross-compilation easier.
+
+dd. The network code (/dev/tcp and /dev/udp redirections) uses getaddrinfo(3)
+ if it's available, which adds support for IPv6.
+
+ee. Subshells of login shells no longer source ~/.bash_logout when they exit.
+
+ff. Fixes so that subshells don't exit inappropriately if the -e option has
+ been set.
+
+gg. Restricted shells no longer allow functions to be exported.
+
+hh. Changes to the pattern matching code so extended pattern matching works
+ on systems with deficient shared library implementations, like MacOS X.
+
+ii. Better error messages when a script with a leading `#!interp' fails
+ to execute because of problems with `interp'.
+
+jj. Fixed `compgen' to handle the `-o default' option better.
+
+kk. Fixed the job control code to force an asynchronous process's standard
+ input to /dev/null only if job control is not active.
+
+ll. Fixed a possible infinite recursion problem when `fc ""=abc' (a null
+ pattern) is used to re-execute a previous command.
+
+mm. Fixed `declare [-a] var=value' to assign VALUE to element 0 if VAR is an
+ array variable. Similarly for `declare [-a] var[N]=value'. This is like
+ ksh93.
+
+nn. Fixed a bug that caused `read -a aname' to work even if ANAME had been
+ declared readonly.
+
+oo. Fixed a possible integer overflow problem when constructing names for
+ temporary files.
+
+2. New Features in Bash
+
+a. Added support for DESTDIR installation root prefix, so you can do a
+ `make install DESTDIR=bash-root' and do easier binary packaging.
+
+b. Added support for builtin printf "'" flag character as per latest POSIX
+ drafts.
+
+c. Support for POSIX.2 printf(1) length specifiers `j', `t', and `z' (from
+ ISO C99).
+
+d. New autoconf macro, RL_LIB_READLINE_VERSION, for use by other applications
+ (bash doesn't use very much of what it returns).
+
+e. `set [-+]o nolog' is recognized as required by the latest POSIX drafts,
+ but ignored.
+
+f. New read-only `shopt' option: login_shell. Set to non-zero value if the
+ shell is a login shell.
+
+g. New `\A' prompt string escape sequence; expands to time in 24 HH:MM format.
+
+h. New `-A group/-g' option to complete and compgen; does group name
+ completion.
+
+i. New `-t' option to `hash' to list hash values for each filename argument.
+
+j. New [-+]O invocation option to set and unset `shopt' options at startup.
+
+k. configure's `--with-installed-readline' option now takes an optional
+ `=PATH' suffix to set the root of the tree where readline is installed
+ to PATH.
+
+l. The ksh-like `ERR' trap has been added. The `ERR' trap will be run
+ whenever the shell would have exited if the -e option were enabled.
+ It is not inherited by shell functions.
+
+m. `readonly', `export', and `declare' now print variables which have been
+ given attributes but not set by assigning a value as just a command and
+ a variable name (like `export foo') when listing, as the latest POSIX
+ drafts require.
+
+n. `bashbug' now requires that the subject be changed from the default.
+
+o. configure has a new `--enable-largefile' option, like other GNU utilities.
+
+p. `for' loops now allow empty word lists after `in', like the latest POSIX
+ drafts require.
+
+3. Changes to Readline
+
+a. More `const' and type casting fixes.
+
+b. Changed rl_message() to use vsnprintf(3) (if available) to fix buffer
+ overflow problems.
+
+c. The completion code no longer appends a `/' or ` ' to a match when
+ completing a symbolic link that resolves to a directory name, unless
+ the match does not add anything to the word being completed. This
+ means that a tab will complete the word up to the full name, but not
+ add anything, and a subsequent tab will add a slash.
+
+d. Fixed a trivial typo that made the vi-mode `dT' command not work.
+
+e. Fixed the tty code so that ^S and ^Q can be inserted with rl_quoted_insert.
+
+f. Fixed the tty code so that ^V works more than once.
+
+g. Changed the use of __P((...)) for function prototypes to PARAMS((...))
+ because the use of __P in typedefs conflicted g++ and glibc.
+
+4. New Features in Readline
+
+a. Added extern declaration for rl_get_termcap to readline.h, making it a
+ public function (it was always there, just not in readline.h).
+
+b. New #defines in readline.h: RL_READLINE_VERSION, currently 0x0402,
+ RL_VERSION_MAJOR, currently 4, and RL_VERSION_MINOR, currently 2.
+
+c. New readline variable: rl_readline_version, mirrors RL_READLINE_VERSION.
+
+d. New bindable boolean readline variable: match-hidden-files. Controls
+ completion of files beginning with a `.' (on Unix). Enabled by default.
+
+e. The history expansion code now allows any character to terminate a
+ `:first-' modifier, like csh.
+
+f. The incremental search code remembers the last search string and uses
+ it if ^R^R is typed without a search string.
+
+------------------------------------------------------------------------------
+This document details the changes between this version, bash-2.05-release,
+and the previous version, bash-2.05-beta2.
+
+1. Changes to Bash
+
+a. Make sure we note that the first line of a multi-line command was not
+ saved in the history if the tests for HISTCONTROL succeed, but the
+ HISTIGNORE check fails.
+
+b. Fixed a bug in the pattern matching code that caused `[' to be treated
+ as a special character inside a `[...]' bracket expression.
+
+c. Fixed a bug in the pattern matching code that caused `]' to terminate
+ a bracket expression even if it was the first character after the `['
+ (or a leading `!' or `^').
+
+d. Made a small change to report a more user-friendly error message if
+ execve(2) fails because of an error with the interpreter in a script
+ with a leading `#! interpreter'.
+
+e. If the OS does not support an exec(2) magic number of `#!', make sure we
+ have a non-null interpreter name before attempting to execute it.
+
+f. Fixed a bug that caused the shell process to end up in a different
+ process group than the controlling terminal if a job-control shell was
+ run with `exec' in the startup files.
+
+g. When started in POSIX mode, either by `bash --posix', `bash -o posix', or
+ `sh', $SHELLOPTS includes `posix' and POSIXLY_CORRECT is set.
+
+h. Fixed a problem that caused the `\W' prompt string escape sequence to
+ expand to nothing when $PWD was `//'.
+
+i. The `bashbug' shell script no longer uses $(...) command substitution.
+
+j. When `set' is invoked without options in POSIX mode, it no longer prints
+ the names and definitions of shell functions.
+
+2. Changes to Readline
+
+a. rl_set_paren_blink_timeout() is now documented.
+
+b. Corrected history.3 man page: `$' is not in the default value of
+ history_word_delimiters.
+
+c. If a hook function assigned to rl_event_hook sets rl_done to a non-zero
+ value, rl_read_key() now immediately returns '\n' (which is assumed to
+ be bound to accept-line).
+
+3. New Features in Bash
+
+a. The `>&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<file' is as if the `command' had been omitted.
+
+pp. ${foo[@]} and ${foo[*]} now work as in ksh93 if `foo' is not an array
+ variable.
+
+qq. ${#foo[X]}, where X is 0, @, or *, now work as in ksh93 if `foo' is not
+ an array variable.
+
+rr. The shell's idea of an absolute pathname now takes into account a
+ possible drive specification on Cygwin and other Windows systems.
+
+ss. Fixed a bug which caused incorrect parsing of some multi-character
+ constructs if they were split across input lines with backslash-newline
+ line continuation.
+
+tt. Fixed a bug that caused restricted shell mode to be set inappropriately
+ when trying to execute a shell script without a leading `#!'.
+
+uu. Shell function definitions no longer require that the body be a group
+ command ( {...} ), as POSIX.2 requires.
+
+vv. The `cd' and `pwd' builtins now process symlinks in pathnames internally
+ and should require many fewer calls to getcwd().
+
+ww. Fixed a bug that caused a pipeline's process group to be set incorrectly
+ if one of the pipeline elements contained a command substitution.
+
+xx. Fixed a bug that caused core dumps when expanding the value of HISTIGNORE.
+
+yy. The output of `set' is now quoted using $'...' so invisible characters are
+ displayed as escape sequences.
+
+zz. Fixed the help text for `unset', since PATH and IFS may both be unset.
+
+aaa. The shell no longer puts directory names into the command hash table.
+
+bbb. Fixed a bug in `read' that caused it to occasionally free memory twice if
+ it was interrupted after reading a large amount of data.
+
+ccc. Assignment statements that attempt to assign values to readonly variables
+ now cause the command to return an error status.
+
+ddd. Fixed a bug that could cause incorrect output if a $(<file) construct was
+ interrupted.
+
+eee. GROUPS and FUNCNAME now return an error status when assignment is
+ attempted, but may be unset (in which case they lose their special
+ properties). In all respects except unsetting, they are readonly.
+
+fff. The string-to-integer conversion code now ignores trailing whitespace in
+ the string, even if strtol(3) does not.
+
+ggg. The tcsh magic-space function now does a better job of inserting the
+ space close to where the point was before the history expansion, rather
+ than just appending it.
+
+hhh. Fixed a bug which caused a file sourced from an interactive shell to
+ fill up the jobs table if it ran lots of jobs.
+
+iii. Fixed a bug in the parameter pattern substitution code to avoid infinite
+ recursion on zero-length matches.
+
+2. Changes to Readline
+
+a. When setting the terminal attributes on systems using `struct termio',
+ readline waits for output to drain before changing the attributes.
+
+b. A fix was made to the history word tokenization code to avoid attempts to
+ dereference a null pointer.
+
+c. Readline now defaults rl_terminal_name to $TERM if the calling application
+ has left it unset, and tries to initialize with the resultant value.
+
+d. Instead of calling (*rl_getc_function)() directly to get input in certain
+ places, readline now calls rl_read_key() consistently.
+
+e. Fixed a bug in the completion code that allowed a backslash to quote a
+ single quote inside a single-quoted string.
+
+f. rl_prompt is no longer assigned directly from the argument to readline(),
+ but uses memory allocated by readline. This allows constant strings to
+ be passed to readline without problems arising when the prompt processing
+ code wants to modify the string.
+
+g. Fixed a bug that caused non-interactive history searches to return the
+ wrong line when performing multiple searches backward for the same string.
+
+h. Many variables, function arguments, and function return values are now
+ declared `const' where appropriate, to improve behavior when linking with
+ C++ code.
+
+i. The control character detection code now works better on systems where
+ `char' is unsigned by default.
+
+j. The vi-mode numeric argument is now capped at 999999, just like emacs mode.
+
+k. The Function, CPFunction, CPPFunction, and VFunction typedefs have been
+ replaced with a set of specific prototyped typedefs, though they are
+ still in the readline header files for backwards compatibility.
+
+m. Nearly all of the (undocumented) internal global variables in the library
+ now have an _rl_ prefix -- there were a number that did not, like
+ screenheight, screenwidth, alphabetic, etc.
+
+n. The ding() convenience function has been renamed to rl_ding(), though the
+ old function is still defined for backwards compatibility.
+
+o. The completion convenience functions filename_completion_function,
+ username_completion_function, and completion_matches now have an rl_
+ prefix, though the old names are still defined for backwards compatibility.
+
+p. The functions shared by readline and bash (linkage is satisfied from bash
+ when compiling with bash, and internally otherwise) now have an sh_ prefix.
+
+q. Changed the shared library creation procedure on Linux and BSD/OS 4.x so
+ that the `soname' contains only the major version number rather than the
+ major and minor numbers.
+
+r. Fixed a redisplay bug that occurred when the prompt spanned more than one
+ physical line and contained invisible characters.
+
+3. New Features in Bash
+
+a. Added a new `--init-file' invocation argument as a synonym for `--rcfile',
+ per the new GNU coding standards.
+
+b. The /dev/tcp and /dev/udp redirections now accept service names as well as
+ port numbers.
+
+c. `complete' and `compgen' now take a `-o value' option, which controls some
+ of the aspects of that compspec. Valid values are:
+
+ default - perform bash default completion if programmable
+ completion produces no matches
+ dirnames - perform directory name completion if programmable
+ completion produces no matches
+ filenames - tell readline that the compspec produces filenames,
+ so it can do things like append slashes to
+ directory names and suppress trailing spaces
+
+4. New Features in Readline
+
+a. The blink timeout for paren matching is now settable by applications.
+
+b. _rl_executing_macro has been renamed to rl_executing_macro, which means
+ it's now part of the public interface.
+
+c. Readline has a new variable, rl_readline_state, which is a bitmap that
+ encapsulates the current state of the library; intended for use by
+ callbacks and hook functions.
+
+------------------------------------------------------------------------------
+This document details the changes between this version, bash-2.04-release,
+and the previous version, bash-2.04-beta5.
+
+1. Changes to Bash
+
+a. Better compile-time and configure-time checks for the necessity of
+ inet_aton().
+
+b. A bug was fixed in the expansion of "${@:-}" when there are positional
+ parameters.
+
+c. A typo was fixed in the output of `complete'.
+
+d. The matches generated for a word by the `-W' argument to complete and
+ compgen are now matched against the word being completed, and only
+ matches are returned as the result.
+
+e. Some fixes were made for systems which do not restart read(2) when a
+ signal caught by bash is received.
+
+f. A bug was fixed which caused the umask to be set to 0 when an invalid
+ symbolic mode mask was parsed.
+
+g. Fixed a bug that could cause a core dump if a SIGCHLD was received while
+ performing an assignment statement using command substitution.
+
+h. Changed the word splitting function for programmable completion so cases
+ in which the cursor is between words are handled a bit better.
+
+2. Changes to Readline
+
+a. rl_funmap_names() is now documented.
+
+3. New Features in Bash
+
+a. The LC_NUMERIC variable is now treated specially, and used to set the
+ LC_NUMERIC locale category for number formatting, e.g., when `printf'
+ displays floating-point numbers.
+
+------------------------------------------------------------------------------
+This document details the changes between this version, bash-2.04-beta5,
+and the previous version, bash-2.04-beta4.
+
+1. Changes to Bash
+
+a. A couple of changes were made to the Makefiles for easier building on
+ non-Unix systems.
+
+b. Fixed a bug where the current prompt would be set to $PS2 at startup.
+
+c. The shell script that tests an already-installed version was changed to
+ remove the directory it created its test programs in at exit.
+
+d. Several changes were made to the code that tokenizes an input line for
+ the programmable completion code. Shell metacharacters will now appear
+ as individual words in the word list passed to the completion functions.
+ Some of the example completion shell functions were changed to understand
+ redirection operators.
+
+e. A bug was fixed that, under obscure circumstances, could confuse the
+ parser when a shell function was run by the programmable completion code.
+
+f. A bug was fixed in the ulimit builtin for systems not using getrlimit().
+
+g. The execution code now propagates the correct exit status back to the rest
+ of the code if the return value of a subshell command was being inverted.
+ Some new test cases for inverting return values with the `!' reserved
+ word have been added.
+
+h. Negative exponents in the arithmetic evaluation of v**e now return an
+ evaluation error.
+
+i. A bug that caused bash to check the wrong process in a pipeline for
+ abnormal termination (and consequently resetting the terminal attributes)
+ was fixed.
+
+j. Fixed a bug that caused $PS2 to be displayed after PROMPT_COMMAND was
+ executed.
+
+2. Changes to Readline
+
+1. Fixed a bug in a C preprocessor define that caused the keypad control
+ functions to be compiled out for all platforms except DJGPP.
+
+------------------------------------------------------------------------------
+This document details the changes between this version, bash-2.04-beta4,
+and the previous version, bash-2.04-beta3.
+
+1. Changes to Bash
+
+a. A couple of changes were made to the redirection to attempt to avoid
+ race conditions and malicious file replacement.
+
+2. A change was made to the string evaluation code (used for command
+ substitution, `eval', and the `.' builtin) to fix an obscure core
+ dump on alpha machines.
+
+3. A bug that caused $LINENO to be wrong when executing arithmetic for
+ commands was fixed.
+
+4. A couple of memory leaks in the programmable completion code were fixed.
+
+5. A bug that could cause a core dump by freeing memory twice during a call
+ to `eval' if `set -u' had been enabled and an undefined variable was
+ referenced was fixed.
+
+------------------------------------------------------------------------------
+This document details the changes between this version, bash-2.04-beta3,
+and the previous version, bash-2.04-beta2.
+
+1. Changes to Bash
+
+a. Bash should run the appropriate startup files when invoked by ssh2.
+
+b. Fixed a bug in the parsing of conditional commands that could cause a
+ core dump.
+
+c. Fixed a bug in parsing job specifications that occasionally caused
+ core dumps when an out-of-range job was referenced.
+
+d. Fixed the `type' and `command' builtins to do better reporting of
+ commands that are not found in $PATH or the hash table.
+
+e. Fixed a POSIX.2 compliance problem in the command builtin -- commands
+ are supposed to be reported as full pathnames.
+
+f. The `echo' builtin now returns failure if a write error occurs.
+
+g. Fixed a bug which caused the locale to not be reset correctly when
+ LC_ALL was unset.
+
+h. Changed description of `getopts' in man page and reference manual to make
+ it clear that option characters may be characters other than letters.
+
+i. If the shell exits while in a function, make sure that any trap on EXIT
+ doesn't think the function is still executing.
+
+j. Bashbug now tries harder to find a usable editor if $EDITOR is not set,
+ rather than simply defaulting to `emacs'.
+
+k. Changes to the scripts that guess and canonicalize the system type, from
+ the latest `automake' distribution via Debian.
+
+l. When using named pipes for process substitution, make sure the file
+ descriptors opened for reading are set to non-blocking mode.
+
+m. Fixed a bug that caused termination of pipelines that are killed by a
+ signal to not be reported in some cases.
+
+n. When not in literal-history mode, shell comment lines are not added to
+ the history list.
+
+o. When running in POSIX.2 mode, bash no longer performs word splitting on
+ the expanded value of the word supplied as the filename argument to
+ redirection operators.
+
+p. The prompt string decoding code now backslash-quotes only characters that
+ are special within double quotes when expanding the \w and \W escape
+ sequences.
+
+q. Fixed a bug in the prompt decoding code that could cause a non-interactive
+ shell to seg fault if `\u' was used in PS4 and the shell was in xtrace
+ mode.
+
+r. Fixed a bug that caused function definitions to be printed with any
+ redirections that should be attached to the entire function before the
+ closing brace.
+
+s. Changed the tilde expansion code for Cygwin systems to avoid creating
+ pathnames beginning with `//' if $HOME == `/'.
+
+t. Fixed a couple of autoconf tests to avoid creating files with fixed names
+ in /tmp.
+
+u. The `trap' and `kill' builtins now know the names of the POSIX.1b real-
+ time signals on systems which support them.
+
+2. Changes to Readline
+
+a. Fixed a problem with the single-quote quoting function that could cause
+ buffer overflows.
+
+b. Fixed a bug that caused incorrect `stat characters' to be printed if
+ the files being completed were in the root directory and visible-stats
+ was enabled.
+
+3. New Features in Bash
+
+a. There is a new `rbash.1' manual page, from the Debian release.
+
+b. The `--enable-usg-echo-default' option to `configure' has been renamed to
+ `--enable-xpg-echo-default'. The old option is still there for backwards
+ compatibility.
+
+------------------------------------------------------------------------------
+This document details the changes between this version, bash-2.04-beta2,
+and the previous version, bash-2.04-beta1.
+
+1. Changes to Bash
+
+a. Fixed a bug that could cause pipes to be closed inappropriately in
+ some obscure cases.
+
+b. Fixed a bug that caused creation of the exported environment to clobber
+ the current command string if there were any exported shell functions.
+
+c. Some changes were made to reduce bash's memory usage.
+
+d. Fixed a problem with programmable completion and filenames to be
+ completed containing quote characters.
+
+e. Changed the code the removes named pipes created for the <(...) and >(...)
+ 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 \<newline>
+ 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.
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 (errnoeous) arithmetic
+ 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
projects / platform / upstream / bash.git / blobdiff