8862 lines
349 KiB
Text
8862 lines
349 KiB
Text
This document details the changes between this version, bash-4.4-release, and
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the previous version, bash-4.4-rc2.
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1. Changes to Bash
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a. Fixed a bug that could potentially result in a crash due to an integer
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overflow.
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b. Fixed a bug in where commands printed due to `set -x' could be incorrectly
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quoted if being printed in contexts where they haven't yet been expanded.
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c. Fixed several memory leaks.
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d. Fixed a bug that could potentially cause the terminal attributes to be
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set incorrectly by a command run from a programmable completion.
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e. Fixed several potential buffer overflow issues in the word expansion code.
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2. Changes to Readline
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3. New Features in Bash
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4. New Features in Readline
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------------------------------------------------------------------------------
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This document details the changes between this version, bash-4.4-rc2, and
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the previous version, bash-4.4-beta2.
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1. Changes to Bash
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a. Fixed an out-of-bounds read in the redirection operator completion code.
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b. Fixed execution context so `until continue' doesn't disable execution for
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subsequent commands.
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c. Fixed trap handling code so traps don't inherit a command's temporary
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environment.
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d. Fixed a bug that resulted in incorrect line numbers when a function is
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defined as part of another function's execution.
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e. Fixed a bug in the expansion of ${a[@]} in contexts where word splitting
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is not performed and $IFS is not the default.
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f. Fixed a bug that caused ''"$@" to not expand to an empty argument when
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there are no positional parameters.
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g. Fixed a bug that caused a shell compiled without job control to use the
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incorrect exit status for builtin commands preceded by a command executed
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from the file system that causes the shell to call waitpid().
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h. Improved word completion for quoted strings containing unterminated command
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substitutions with embedded double quotes.
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2. Changes to Readline
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a. Fixed a bug that caused mode strings to be displayed incorrectly if the
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prompt was shorter than the mode string.
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3. New Features in Bash
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a. Using ${a[@]} or ${a[*]} with an array without any assigned elements when
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the nounset option is enabled no longer throws an unbound variable error.
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4. New Features in Readline
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a. New application-callable function: rl_pending_signal(): returns the signal
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number of any signal readline has caught but not yet handled.
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b. New application-settable variable: rl_persistent_signal_handlers: if set
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to a non-zero value, readline will enable the readline-6.2 signal handler
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behavior in callback mode: handlers are installed when
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rl_callback_handler_install is called and removed removed when a complete
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line has been read.
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------------------------------------------------------------------------------
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This document details the changes between this version, bash-4.4-beta2, and
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the previous version, bash-4.4-rc1.
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1. Changes to Bash
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a. Fixed a memory leak when processing ${!var[@]}.
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b. Fixed a bug that caused subshells to free trap strings associated with
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inherited signals.
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c. Inheriting BASHOPTS from the environment now works to force actions
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associated with enabling an option, instead of just marking the option
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as enabled.
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d. Fixed a bug that allowed assignments to BASH_CMDS when the shell was in
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restricted mode.
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e. Fixed a bug caused by an accidental omission of part of the original patch
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for EXECIGNORE.
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e. Prompt expansion now quotes the results of the \s, \h, and \H expansions.
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f. Fixed a bug that caused parsing errors in command substitutions with
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consecutive case statements separated by newlines.
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g. Updated logic used to decide whether bash is running inside an emacs
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terminal emulator to work with future emacs versions.
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h. Fixed two extended pattern matching bugs caused by premature short-
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circuiting.
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i. Fixed a memory leak in the code that removes duplicate history entries.
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j. There are a number of bug fixes to coproc, mapfile, declare, unset,
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and assignment statements that prevent nameref variables from creating
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and unsetting variables with invalid names.
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k. Fixed a bug that caused variables to be inadvertently marked as both an
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associative and an indexed array.
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l. Fixed a bug that caused `bash -c' to not run a trap specified in the
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command string.
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j. There are a number of bug fixes to coproc, mapfile, declare, and assignment
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statements that prevent nameref variables from overwriting or modifying
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attributes of readonly variables.
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k. Fixed a bug that caused command substitution to attempt to set the
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terminal's process group incorrectly.
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l. Fixed a bug that could cause prompt string expansion to display error
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messages when the `nounset' shell option is set.
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m. Fixed a bug that caused "$@" to not expand to an empty string under the
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circumstances when Posix says it should ("${@-${@-$@}}").
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n. Fixed several bugs caused by referencing nameref variables whose values
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are names of unset variables (or names that are valid for referencing
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but not assignment), including creating variables in the temporary
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environment.
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o. Function tracing and error tracing are disabled if --debugger is supplied
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at startup but the shell can't find the debugger start file.
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p. Fixed a bug when IFS is used as the control variable in a for statement.
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q. Fixed a bug with SIGINT received by a command substitution in an interactive
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shell.
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r. The checks for nameref variable self-references are more thorough.
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s. Fixed several bugs with multi-line aliases.
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t. Fixed `test' to handle the four-argument case where $1 == '(' and
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$4 == ')'.
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u. Fixed a bug in the expansion of $* in the cases where word splitting is
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not performed.
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v. Fixed a bug in execution of case statements where IFS includes the
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pattern matching characters.
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2. Changes to Readline
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a. When refreshing the line as the result of a key sequence, Readline attempts
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to redraw only the last line of a multiline prompt.
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b. Fixed an issue that caused completion of git commands to display
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incorrectly when using colored-completion-prefix.
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c. Fixed several redisplay bugs having to do with multibyte characters and
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invisible characters in prompt strings.
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3. New Features in Bash
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a. Value conversions (arithmetic expansions, case modification, etc.) now
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happen when assigning elements of an array using compound assignment.
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b. There is a new option settable in config-top.h that makes multiple
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directory arguments to `cd' a fatal error.
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c. Bash now uses mktemp() when creating internal temporary files; it produces
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a warning at build time on many Linux systems.
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4. New Features in Readline
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a. The default binding for ^W in vi mode now uses word boundaries specified
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by Posix (vi-unix-word-rubout is bindable command name).
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b. rl_clear_visible_line: new application-callable function; clears all
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screen lines occupied by the current visible readline line.
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c. rl_tty_set_echoing: application-callable function that controls whether
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or not readline thinks it is echoing terminal output.
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d. Handle >| and strings of digits preceding and following redirection
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specifications as single tokens when tokenizing the line for history
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expansion.
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e. Fixed a bug with displaying completions when the prefix display length
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is greater than the length of the completions to be displayed.
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f. The :p history modifier now applies to the entire line, so any expansion
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specifying :p causes the line to be printed instead of expanded.
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------------------------------------------------------------------------------
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This document details the changes between this version, bash-4.4-rc1, and
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|
the previous version, bash-4.4-beta.
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1. Changes to Bash
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a. Fixed several problems with bash completion not special-casing bash syntax
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constructs.
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b. Fixed a bug that caused the mapfile builtin to not create array variables
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when a variable of the same name appears in the temporary environment.
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c. Fixed a bug that caused prompt expansion to loop when PS1 contained a
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syntax error.
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d. Fixed a bug that caused the ${array[@]@A} expansion to split the results
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|
even when double-quoted.
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e. There is a new implementation of the code that saves the last CHILD_MAX
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exited background pids so their status can be queried later.
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f. Bash-4.4 can now be configured and built on very old versions of Solaris 2.
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g. Fixed problems with --help support for several builtins.
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h. Fixed values added to BASH_SOURCE and BASH_LINENO for functions inherited
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from the environment.
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i. Fixed a bug that caused background processes run from non-interactive shells
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with job control enabled to place the terminal in the wrong process group
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under certain circumstances.
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j. Fixed a bug that caused `fc' to return an incorrect exit status when
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executing commands from the history list.
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k. Fixed a bug that caused the shell to exit when a process substitution
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received a SIGINT when run in certain terminal emulators.
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l. EXECIGNORE now honors the setting of `extglob' when attempting to match
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executable names.
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m. Fixed a bug where `return' used the wrong exit status when executed in a
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DEBUG trap.
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n. Fixed a bug that caused a command containing a here-document and an escaped
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newline to be stored in the history list incorrectly.
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o. Fixed a bug that caused set -e to be honored in cases of builtins invoking
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other builtins when it should be ignored.
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p. Fixed a bug that caused `readonly' and `export' to create local array
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variables when used within shell functions.
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q. Fixed a bug that allowed subshells begun to execute process substitutions
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to have access to the command's temporary environment.
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r. Fixed a bug that could cause the shell to dump core when receiving a
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SIGCHLD for which a trap has been set while running in posix mode.
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s. Fixed a bug that caused bash to not restore BASH_ARGC, BASH_ARGV,
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BASH_SOURCE, BASH_LINENO, and FUNCNAME if the shell received a SIGINT
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while reading commands from a file while executing `.'.
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t. Fixed a bug that caused the `-o history' option to have no effect when
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supplied on the command line when starting a new shell.
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u. Fixed a bug that caused history expansions occurring in command
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substitutions to not be performed.
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v. Fixed a bug that caused `eval' run in a non-interactive shell to disable
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history expansion for the remainder of the shell script, even if the script
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had previously enabled it.
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w. Fixed a bug that caused "$@" to not expand to multiple words when IFS is set
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to the empty string.
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x. Fixed a bug that caused process and command substitution to inherit output
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buffered in the stdio library but not written.
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y. Fixed a bug that caused a terminating signal received during `echo' to run
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an exit trap in a signal handler context.
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z. Fixed a bug that caused a builtin command containing a process substitution
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|
to return the wrong exit status.
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aa. Fixed a bug that caused `()' subshells with piped input to incorrectly
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|
redirect the standard input of some of the commands in the subshell from
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/dev/null.
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bb. The history builtin now uses more descriptive error messages for missing or
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invalid timestamps.
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|
2. Changes to Readline
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a. The history file writing functions only attempt to create and use a backup
|
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history file if the history file exists and is a regular file.
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b. Fixed an out-of-bounds read in readline's internal tilde expansion
|
|
interface.
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c. Fixed several redisplay bugs with prompt strings containing multibyte
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and non-visible characters whose physical length is longer than the screen
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width.
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d. Fixed a redisplay bug with prompt strings containing invisible characters
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whose physical length exceeds the screen width and using incremental search.
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e. Readline prints more descriptive error messages when it encounters errors
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|
while reading an inputrc file.
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f. Fixed a bug in the character insertion code that attempts to optimize
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typeahead when it reads a character that is not bound to self-insert and
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|
resets the key sequence state.
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3. New Features in Bash
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|
a. BASH_COMPAT and FUNCNEST can be inherited and set from the shell's initial
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environment.
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b. inherit_errexit: a new `shopt' option that, when set, causes command
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substitutions to inherit the -e option. By default, those subshells disable
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-e. It's enabled as part of turning on posix mode.
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c. New prompt string: PS0. Expanded and displayed by interactive shells after
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reading a complete command but before executing it.
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d. Interactive shells now behave as if SIGTSTP/SIGTTIN/SIGTTOU are set to
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SIG_DFL when the shell is started, so they are set to SIG_DFL in child
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processes.
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e. Posix-mode shells now allow double quotes to quote the history expansion
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character.
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f. OLDPWD can be inherited from the environment if it names a directory.
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g. Shells running as root no longer inherit PS4 from the environment, closing
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a security hole involving PS4 expansion performing command substitution.
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h. If executing an implicit `cd' when the `autocd' option is set, bash will
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now invoke a function named `cd' if one exists before executing the `cd'
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builtin.
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4. New Features in Readline
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a. If an incremental search string has its last character removed with DEL,
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the resulting empty search string no longer matches the previous line.
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b. If readline reads a history file that begins with `#' (or the value of
|
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the history comment character) and has enabled history timestamps, the
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history entries are assumed to be delimited by timestamps. This allows
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multi-line history entries.
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c. Readline now throws an error if it parses a key binding without a
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terminating `:' or whitespace.
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------------------------------------------------------------------------------
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|
This document details the changes between this version, bash-4.4-beta, and
|
|
the previous version, bash-4.4-alpha.
|
|
|
|
1. Changes to Bash
|
|
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|
a. Fixed two bugs that caused out-of-bounds reads when skipping over assignment
|
|
statements while finding the word on which to perform programmable
|
|
completion.
|
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|
b. Fixed a memory leak in programmable completion.
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|
c. Fixed a bug that could cause the shell to crash when interrupting the
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|
wait builtin.
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|
d. Fixed a bug that caused ${!vvv@} to be interpreted as introducing the new
|
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`@' operator.
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e. Fixed a bug that caused the && and || operators to be incorrectly optimized.
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|
f. The shell now undoes redirections before exiting the shell when the `-e'
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option is enabled, and a shell function fails.
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|
g. History expansion now skips over the history expansion character in command
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and process substitution.
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|
h. Fixed a bug that caused stray '\001' characters to be added to the output
|
|
of `declare -p'.
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i. Fixed a memory leak when processing declare commands that perform compound
|
|
array assignments.
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j. Fixed a bug that could cause the shell to crash when reading input from a
|
|
file and the limit on open file descriptors is high.
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|
k. Fixed a bug that caused the ERR and RETURN traps to be unset if they were
|
|
set in a shell function but unset previously.
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l. Fixed a bug that caused several signals to be ignored if `exec' failed in
|
|
an interactive shell.
|
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m. A posix-mode non-interactive shell now considers a parameter expansion error
|
|
to be a fatal error.
|
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|
n. The `time' command now prints timing statistics for failed commands when
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the -e option is enabled.
|
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|
o. Fixed a bug that caused the shell to crash when attempting to indirectly
|
|
expand a shell variable with an invalid name.
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|
p. Fixed a bug that caused the shell to crash when running a trap containing
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a process substitution.
|
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q. Bash now prints the keyword `function' before a function with the same name
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|
as a reserved word when using `declare -f' to avoid parse errors when
|
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reusing the output as input.
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r. Fixed a bug that caused the shell to crash when using declare -g to attempt
|
|
to redefine an existing global indexed array variable as an associative
|
|
array.
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s. Fixed a memory leak that occurred when interrupting brace expansions
|
|
generating a sequence.
|
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t. Fixed a bug that resulted in alias expansion in redirections.
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|
u. The `declare -a' and `declare -A' commands now print fewer warnings when
|
|
attempting to create and initialize an array at the same time, but
|
|
relying on word expansions to construct the compound assignment.
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v. The `help' builtin now behaves better in locales where each wide
|
|
character occupies more than one display column.
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|
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|
w. The `read' builtin no longer has a possible race condition when a timeout
|
|
occurs.
|
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|
x. Fixed several expansion problems encountered when IFS="'".
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|
y. Fixed a problem with the expansion of $'\c?'.
|
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|
z. Bash no longer splits the expansion of here-strings, as the documentation
|
|
has always said.
|
|
|
|
aa. Bash now puts `s' in the value of $- if the shell is reading from standard
|
|
input, as Posix requires.
|
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|
bb. Fixed a bug that caused the shell to crash if invoked with a NULL
|
|
environment.
|
|
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cc. The shell now only trusts an inherited value for $PWD if it begins with a
|
|
`/'.
|
|
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|
dd. Fixed a memory leak when creating local array variables and assigning to
|
|
them using compound assignment with the `declare' builtin.
|
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|
ee. Fixed a bug that could cause the shell to crash when processing nested here
|
|
documents inside a command substitution.
|
|
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|
ff. Array keys and values are now displayed using $'...' quoting where
|
|
appropriate.
|
|
|
|
gg. Fixed a bug that could cause the shell to crash if the replacement string
|
|
in pattern substitution was NULL.
|
|
|
|
hh. Fixed a bug that could cause the shell to crash if a command substitution
|
|
contained a non-fatal syntax error.
|
|
|
|
ii. Fixed a bug that could cause the shell to crash if variable indirection
|
|
resulted in a NULL variable.
|
|
|
|
jj. Fixed a bug that could cause the shell to crash if a long string contained
|
|
multiple unterminated parameter expansion constructs.
|
|
|
|
kk. Improved the code that acts on SIGINT received while waiting for a child
|
|
process only if the child exits due to SIGINT.
|
|
|
|
ll. $BASH_SUBSHELL now has more consistent values in asynchronous simple
|
|
commands.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Colored completion prefixes are now displayed using a different color, less
|
|
likely to collide with files.
|
|
|
|
b. Fixed a bug that caused vi-mode character search to misbehave when
|
|
running in callback mode.
|
|
|
|
c. Fixed a bug that caused output to be delayed when input is coming from a
|
|
macro in vi-mode.
|
|
|
|
d. Fixed a bug that caused the vi-mode `.' command to misbehave when redoing
|
|
a multi-key key sequence via a macro.
|
|
|
|
e. Fixed a bug that caused problems with applications that supply their own
|
|
input function when performing completion.
|
|
|
|
f. When read returns -1/EIO when attempting to read a key, return an error
|
|
instead of line termination back to the caller.
|
|
|
|
g. Updated tty auditing feature based on patch from Red Hat.
|
|
|
|
h. Fixed a bug that could cause the history library to crash on overflows
|
|
introduced by malicious editing of timestamps in the history file.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. `make install' now installs the example loadable builtins and a set of
|
|
bash headers to use when developing new loadable builtins.
|
|
|
|
b. `enable -f' now attempts to call functions named BUILTIN_builtin_load when
|
|
loading BUILTIN, and BUILTIN_builtin_unload when deleting it. This allows
|
|
loadable builtins to run initialization and cleanup code.
|
|
|
|
c. There is a new BASH_LOADABLES_PATH variable containing a list of directories
|
|
where the `enable -f' command looks for shared objects containing loadable
|
|
builtins.
|
|
|
|
d. The `complete_fullquote' option to `shopt' changes filename completion to
|
|
quote all shell metacharacters in filenames and directory names.
|
|
|
|
e. The `kill' builtin now has a `-L' option, equivalent to `-l', for
|
|
compatibility with Linux standalone versions of kill.
|
|
|
|
4. New Features in Readline
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.4-alpha, and
|
|
the previous version, bash-4.3-release.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. A bug that caused pipelines to be corrupted while running the DEBUG trap
|
|
was fixed.
|
|
|
|
b. A bug that accidentally omitted the `-R' unary operator from `test' was
|
|
fixed.
|
|
|
|
c. A bug that could cause the shell to not restore the terminal's process
|
|
group on shell exit was fixed.
|
|
|
|
d. Several changes were made to programmable completion to accommodate
|
|
assumptions made by the bash-completion package.
|
|
|
|
e. Bash no longer inhibits C-style escape processing ($'...') while performing
|
|
pattern substitution word expansions.
|
|
|
|
f. Fixed a bug that caused `return' executed from a trap handler to use the
|
|
wrong return status when one was not supplied as an argument.
|
|
|
|
g. In Posix mode, defining a function with the same name as a special
|
|
builtin is now an error, fatal only when the shell is not interactive.
|
|
|
|
h. Fixed a bug that caused compound array assignments to discard unset or null
|
|
variables used as subscripts, thereby making it appear as if the index was
|
|
not present.
|
|
|
|
i. Fixed a bug that caused extended glob patterns to incorrectly match
|
|
filenames with a leading `.'.
|
|
|
|
j. Fixed a bug involving sign extension when reallocating the input line
|
|
after a history expansion, causing segmentation faults.
|
|
|
|
k. Bash now does a better job at identifying syntax errors during word
|
|
completion and tailoring completion appropriately.
|
|
|
|
l. Bash now uses the current locale's decimal point in comamnd timing output.
|
|
|
|
m. Fixed a bug that caused segmentation faults while reading here documents if
|
|
PS2 contains a command substitution.
|
|
|
|
n. There are several changes to how $@ is expanded when unquoted but in a
|
|
context where word splitting is not performed (e.g., on the rhs of an
|
|
assignment or in a conditional command).
|
|
|
|
o. Bash now quotes command hash table entries that contain shell metacharacters
|
|
when displaying hash table contents.
|
|
|
|
p. Fixed a potential file descriptor leak when dup2() fails while performing a
|
|
redirection.
|
|
|
|
q. Fixed a bug that caused directory names evaluated during word completion to
|
|
be dequoted twice.
|
|
|
|
r. Fixed several bugs which could result in indirect variable expansion and
|
|
namerefs creating variables with invalid names or referencing variables
|
|
set to the empty string.
|
|
|
|
s. Fixed a bug that caused bash to not expand $0 in word expansions where it
|
|
should.
|
|
|
|
t. Fixed a bug that caused bash to perform process substitution if <(
|
|
appeared inside an arithmetic context.
|
|
|
|
u. Fixed a bug in extglob pattern parsing that caused slashes in the pattern
|
|
to be confused as directory names.
|
|
|
|
v. Fixed several bugs with treatment of invisible variables (variables with
|
|
attributes that are unset because they have never been assigned values).
|
|
|
|
w. Fixed a bug that caused the `read' builtin to not clean up readline's
|
|
state when using the -e and -t options together and the read timed out.
|
|
|
|
x. Fixed a bug that caused the shell to exit with the wrong (but non-zero)
|
|
value if a command was not found or was not executable.
|
|
|
|
y. Fixed a bug that caused the `time' reserved word to not be recognized as
|
|
such in all contexts where it should have been.
|
|
|
|
z. Fixed a bug that caused the shell to close process subsitution file
|
|
descriptors when executing a script without the `#!' leading line.
|
|
|
|
aa. Fixed a typo that caused the `compat42' shell option to set the wrong
|
|
compatibility level.
|
|
|
|
bb. The shell now handles process substitution commands with embedded
|
|
parentheses the same way as it does when parsing command substitution.
|
|
|
|
cc. Fixed a bug that caused nested pipelines and the `lastpipe' shell option
|
|
to produce core dumps.
|
|
|
|
dd. Fixed a bug that caused patterns containing `*' to match pathnames in cases
|
|
where slashes must be matched explicitly.
|
|
|
|
ee. Fixed a problem with patterns containing `:' in colon-separated variables
|
|
like GLOBIGNORE.
|
|
|
|
ff. Fixed a bug that caused indirect variable expansion using indexed arrays to
|
|
always use index 0.
|
|
|
|
gg. Fixed a parsing problem that caused quoted newlines immediately following a
|
|
command substitution to be mishandled in certain cases.
|
|
|
|
hh. Fixed a potential buffer overflow on systems without locale_charset or the
|
|
bash replacement.
|
|
|
|
ii. Fixed a bug that caused background processes to modify the terminal's
|
|
process group under certain circumstances.
|
|
|
|
jj. Asynchronous commands now always set $? to 0 and are not affected by
|
|
whether or not the command's exit status is being inverted.
|
|
|
|
kk. Fixed a problem that caused a line ending with an escaped newline and
|
|
containingh a prior `eval' to be incorrectly parsed.
|
|
|
|
ll. Fixed an issue with programmable completion and `!' in extglob patterns
|
|
used as arguments to `compgen -X'.
|
|
|
|
mm. Word completion now treats the two-character token `>|' as requiring
|
|
filename expansion.
|
|
|
|
nn. Bash no longer expands tildes in $PATH elements while in Posix mode.
|
|
|
|
oo. Fixed a bug that caused bash to not clean up readline's state, including
|
|
the terminal settings, if it received a fatal signal while in a readline()
|
|
call (including `read -e' and `read -s').
|
|
|
|
pp. Fixed bug that caused importing shell functions from the environment to
|
|
execute additional commands following the function.
|
|
|
|
qq. Fixed a bug that caused the parser to return a lookahead character pushed
|
|
back by a previous call, even when on another line.
|
|
|
|
rr. Fixed a bug that caused many here-documents or many nested case statements
|
|
to overflow an internal stack.
|
|
|
|
ss. Changed the way bash encodes exported functions for inclusion in the
|
|
environment to avoid name collisions with valid variable names and to
|
|
indicate that they are exported functions.
|
|
|
|
tt. Fixed a bug that could result in an invalid memory access when processing
|
|
a here document delimited by end of file or end of string.
|
|
|
|
uu. Fixed a bug that could cause an invalid memory access if a command was run
|
|
before initializing the job control framework.
|
|
|
|
vv. When in Posix mode, bash prints shell function definitions as Posix
|
|
specifies them, without the leading `function' keyword.
|
|
|
|
ww. The variable attribute display builtins no longer display variables with
|
|
invalid names that were imported from the environment.
|
|
|
|
xx. Fixed a bug that could allow `break' or `continue' executed from shell
|
|
functions to affect loops running outside of the function.
|
|
|
|
yy. Fixed a bug that could cause a restricted shell to attempt to import shell
|
|
functions from the environment.
|
|
|
|
zz. The shell now allows double-quoted identifiers in arithmetic expressions.
|
|
|
|
aaa. Fixed a bug that could allow scalar variables subscripted using [@] in
|
|
word expansions to be incorrectly quoted.
|
|
|
|
bbb. The shell now makes sure to ignore SIGTSTP/SIGTTIN/SIGTTOU in child
|
|
processes if they were ignored at shell startup, even if job control is
|
|
in effect.
|
|
|
|
ccc. Fixed a bug that could cause $* to be split on spaces when IFS is set to
|
|
the empty string.
|
|
|
|
ddd. Posix says that expanding $* in a pattern context where the expansion is
|
|
double-quoted should not treat $* as if it were double quoted.
|
|
|
|
eee. Bash now restores getopts' internal state between calls to getopts even if
|
|
a shell function declares a local copy of OPTIND.
|
|
|
|
fff. Fixed a bug that could cause `history -r' or `history -n' to read identical
|
|
lines from the history file more than once.
|
|
|
|
ggg. The commands executed by `bind -x' now redisplay at most the final line
|
|
of a multi-line prompt, and those commands may return 124 to indicate that
|
|
the entire prompt should be redrawn.
|
|
|
|
hhh. Fixed a bug that could cause `mapfile' to create variables with invalid
|
|
names.
|
|
|
|
iii. The shell only goes into debugging mode when --debugger is supplied if
|
|
the debugger initialization file is present.
|
|
|
|
jjj. Fixed a bug that disallowed an assignment to (implicit) subscript 0 of an
|
|
existing array in a declare command that set the readonly attribute.
|
|
|
|
kkk. Fixed a bug that inadvertently allowed assignments to FUNCNAME to disable
|
|
its special status.
|
|
|
|
lll. Appending to an existing array variable using the compound assignment
|
|
syntax (var+=(aaa)) should not affect assignments to existing subscripts
|
|
appearing in the compound assignment.
|
|
|
|
mmm. Fixed a bug that could cause the shell to crash when a variable with a
|
|
null value was passed in the temporary environment and the variable's
|
|
attributes are modified using `declare' while performing a redirection.
|
|
|
|
nnn. Fixed a bug in printf so that a missing precision specifier after a `.'
|
|
is treated as 0.
|
|
|
|
ooo. Fixed a bug that attempted to use the internal command timing to time
|
|
pipeline components if the pipeline elements are separated by newlines.
|
|
|
|
ppp. Fixed a bug that caused `declare -al foo=(ONE TWO THREE)' to not lowercase
|
|
the values on assignment.
|
|
|
|
qqq. Bash does a better job of determining whether or not files are executable
|
|
when running on Windows, since the X_OK flag to access(2) is not supported.
|
|
|
|
rrr. Fixed a bug that caused some of the shell's internal traps (e.g., ERR) to
|
|
be interrupted (and leave incorrect state) by pending SIGINTs.
|
|
|
|
sss. Fixed a bug in the bash interface to history expansion to avoid attempting
|
|
expansion if the history expansion character occurs in a command
|
|
substitution.
|
|
|
|
ttt. Fixed a bug that caused the select command to crash if the REPLY variable
|
|
ends up empty (e.g., if it's made readonly)
|
|
|
|
uuu. Bash handles backslash-quoting of multibyte characters better when quoting
|
|
output that is intended to be reused.
|
|
|
|
vvv. System-specific changes for: Windows, Cygwin.
|
|
|
|
www. Fixes for upper and lower-casing multibyte characters, some locales have
|
|
characters whose upper and lowercase versions have different numbers of
|
|
bytes.
|
|
|
|
xxx. Fixed a bug that caused the ERR trap in a shell function to have the
|
|
wrong value for $LINENO.
|
|
|
|
yyy. Fixed a bug that resulted in incorrect quoting of regexps for the =~
|
|
operator when an open brace appears without a close brace.
|
|
|
|
zzz. Fixed a bug in the array unset operation that caused it to attempt to
|
|
parse embedded single and double quotes.
|
|
|
|
aaaa. Fixed a bug that caused $* to not expand with the first character of
|
|
$IFS as a separator in a context where word splitting will not take
|
|
place.
|
|
|
|
bbbb. Fixed two bugs that could cause the shell to dereference a null pointer
|
|
while attempting to print an error message from arithmetic expansion.
|
|
|
|
cccc. Fixed a bug that resulted in short-circuited evaluation when reading
|
|
commands from a string ending in an unquoted backslash, or when sourcing
|
|
a file that ends with an unquoted backslash.
|
|
|
|
dddd. Fixed a bug that resulted in the no-fork optimization not cleaning up
|
|
any FIFOs created by process substitution.
|
|
|
|
eeee. If the -T option is not set, allow the source builtin and shell functions
|
|
to set a DEBUG trap that persists after the sourced file or function
|
|
returns, instead of restoring the old (unset) value unconditionally.
|
|
|
|
ffff. Fixed a bug that caused redirections to not be undone on some syntax
|
|
errors, e.g., when parsing a command substitution.
|
|
|
|
gggg. Bash only adds asynchronous commands to the table of background pids
|
|
whose status it remembers, to avoid it growing too large during scripts
|
|
that create and reap large numbers of child processes. This means that
|
|
`wait' no longer works on synchronous jobs, but $? can be used to get
|
|
the exit status in those cases.
|
|
|
|
hhhh. Bash now checks whether or not a shell script argument is a directory
|
|
before trying to open it; Posix says implementations may allow open(2)
|
|
on a directory.
|
|
|
|
iiii. Fixed a bug that could cause the shell to set the terminal's process
|
|
group to a background process group when running as part of a pipeline.
|
|
|
|
jjjj. Made a few changes to strings to avoid possible potential negative effects
|
|
caused by malicious translations.
|
|
|
|
kkkk. Fixed a bug that caused the `unset' builtin to continue to treat its
|
|
arguments as functions after unsetting a function when invoked with no
|
|
options.
|
|
|
|
llll. Fixed a bug that would not replace empty strings using pattern
|
|
substitution even if the pattern matched the empty string.
|
|
|
|
mmmm. Fixed a bug with word completion that prevented some characters from
|
|
being backslash-quoted (backquote, dollar sign).
|
|
|
|
nnnn. Fixed a bug that prevented a command from the history re-executed by the
|
|
`fc' builtin from setting verbose mode.
|
|
|
|
oooo. Fixed a bug that caused the shell to not enable and disable function
|
|
tracing with changes to the `extdebug' shell option.
|
|
|
|
pppp. Fixed a bug that caused assignments to nameref variables pointing to
|
|
unset variables with attributes but no values to create variables with
|
|
incorrect names.
|
|
|
|
qqqq. Fixed a bug that caused `unset' on nameref variables (without -n) to
|
|
unset the wrong variable under certain circumstances.
|
|
|
|
rrrr. Fixed a bug that caused close braces occurring in brace expansions within
|
|
command substitutions to incorrectly terminate parameter expansions.
|
|
|
|
ssss. Fixed a bug that caused `command -p' to temporarily alter $PATH.
|
|
|
|
tttt. Fixed a bug that caused interactive shells compiled without job control
|
|
to return incorrect status values for child processes when running a
|
|
single command that creates enough children to use the entire PID space.
|
|
|
|
uuuu. `esac' should not be recognized as a reserved word when it appears as the
|
|
second or later pattern in a case statement pattern list.
|
|
|
|
vvvv. Fixed a bug that caused the completion code to read past the end of the
|
|
readline line buffer while skipping assignment statements to find the
|
|
command name.
|
|
|
|
wwww. Fixed a bug that caused case statements within loops contained in a
|
|
command substitution to be parsed incorrectly.
|
|
|
|
xxxx. Fixed a bug that could cause SIGCHLD handling to be delayed after
|
|
running `wait' with no arguments and interrupting it with ^C without
|
|
a trap handler installed.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. A bug that caused vi-mode `.' to be unable to redo `c', `d', and `y'
|
|
commands with modifiers was fixed.
|
|
|
|
b. Fixed a bug that caused callback mode to dump core when reading a
|
|
multiple-key sequence (e.g., arrow keys).
|
|
|
|
c. Fixed a bug that caused the redisplay code to erase some of the line when
|
|
using horizontal scrolling with incremental search.
|
|
|
|
d. Readline's input handler now performs signal processing if read(2) is
|
|
interrupted by SIGALRM or SIGVTALRM.
|
|
|
|
e. Fixed a problem with revert-all-at-newline freeing freed memory.
|
|
|
|
f. Clarified the documentation for the history_quotes_inhibit_expansion
|
|
variable to note that it inhibits scanning for the history comment
|
|
character and that it only affects double-quoted strings.
|
|
|
|
g. Fixed an off-by-one error in the prompt printed when performing searches.
|
|
|
|
h. Use pselect(2), if available, to wait for input before calling read(2), so
|
|
a SIGWINCH can interrupt it, since it doesn't interrupt read(2).
|
|
|
|
i. Some memory leaks caused by signals interrupting filename completion have
|
|
been fixed.
|
|
|
|
j. Reading EOF twice on a non-empty line causes EOF to be returned, rather
|
|
than the partial line. This can cause partial lines to be executed on
|
|
SIGHUP, for example.
|
|
|
|
k. Fixed a bug concerning deleting multibyte characters from the search
|
|
string while performing an incremental search.
|
|
|
|
l. Fixed a bug with tilde expanding directory names in filename completion.
|
|
|
|
m. Fixed a bug that did not allow binding sequences beginning with a `\'.
|
|
|
|
n. Fixed a redisplay bug involving incorrect line wrapping when the prompt
|
|
contains a multibyte character in the last screen column.
|
|
|
|
o. Fixed a bug that caused history expansion to disregard characters that are
|
|
documented to delimit a history event specifier without requiring `:'.
|
|
|
|
p. Fixed a bug that could cause reading past the end of a string when reading
|
|
the value when binding the set of isearch terminators.
|
|
|
|
q. Fixed a bug that caused readline commands that depend on knowing which
|
|
key invoked them to misbehave when dispatching key sequences that are
|
|
prefixes of other key bindings.
|
|
|
|
r. Paren matching now works in vi insert mode.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. There is now a settable configuration #define that will cause the shell
|
|
to exit if the shell is running setuid without the -p option and setuid
|
|
to the real uid fails.
|
|
|
|
b. Command and process substitutions now turn off the `-v' option when
|
|
executing, as other shells seem to do.
|
|
|
|
c. The default value for the `checkhash' shell option may now be set at
|
|
compile time with a #define.
|
|
|
|
d. The `mapfile' builtin now has a -d option to use an arbitrary character
|
|
as the record delimiter, and a -t option to strip the delimiter as
|
|
supplied with -d.
|
|
|
|
e. The maximum number of nested recursive calls to `eval' is now settable in
|
|
config-top.h; the default is no limit.
|
|
|
|
f. The `-p' option to declare and similar builtins will display attributes for
|
|
named variables even when those variables have not been assigned values
|
|
(which are technically unset).
|
|
|
|
g. The maximum number of nested recursive calls to `source' is now settable
|
|
in config-top.h; the default is no limit.
|
|
|
|
h. All builtin commands recognize the `--help' option and print a usage
|
|
summary.
|
|
|
|
i. Bash does not allow function names containing `/' and `=' to be exported.
|
|
|
|
j. The `ulimit' builtin has new -k (kqueues) and -P (pseudoterminals) options.
|
|
|
|
k. The shell now allows `time ; othercommand' to time null commands.
|
|
|
|
l. There is a new `--enable-function-import' configuration option to allow
|
|
importing shell functions from the environment; import is enabled by
|
|
default.
|
|
|
|
m. `printf -v var ""' will now set `var' to the empty string, as if `var=""'
|
|
had been executed.
|
|
|
|
n. GLOBIGNORE, the pattern substitution word expansion, and programmable
|
|
completion match filtering now honor the value of the `nocasematch' option.
|
|
|
|
o. There is a new ${parameter@spec} family of operators to transform the
|
|
value of `parameter'.
|
|
|
|
p. Bash no longer attempts to perform compound assignment if a variable on the
|
|
rhs of an assignment statement argument to `declare' has the form of a
|
|
compound assignment (e.g., w='(word)' ; declare foo=$w); compound
|
|
assignments are accepted if the variable was already declared as an array,
|
|
but with a warning.
|
|
|
|
q. The declare builtin no longer displays array variables using the compound
|
|
assignment syntax with quotes; that will generate warnings when re-used as
|
|
input, and isn't necessary.
|
|
|
|
r. Executing the rhs of && and || will no longer cause the shell to fork if
|
|
it's not necessary.
|
|
|
|
s. The `local' builtin takes a new argument: `-', which will cause it to save
|
|
the single-letter shell options and restore their previous values at
|
|
function return.
|
|
|
|
t. `complete' and `compgen' have a new `-o nosort' option, which forces
|
|
readline to not sort the completion matches.
|
|
|
|
u. Bash now allows waiting for the most recent process substitution, since it
|
|
appears as $!.
|
|
|
|
v. The `unset' builtin now unsets a scalar variable if it is subscripted with
|
|
a `0', analogous to the ${var[0]} expansion.
|
|
|
|
w. `set -i' is no longer valid, as in other shells.
|
|
|
|
x. BASH_SUBSHELL is now updated for process substitution and group commands
|
|
in pipelines, and is available with the same value when running any exit
|
|
trap.
|
|
|
|
y. Bash now checks $INSIDE_EMACS as well as $EMACS when deciding whether or
|
|
not bash is being run in a GNU Emacs shell window.
|
|
|
|
z. Bash now treats SIGINT received when running a non-builtin command in a
|
|
loop the way it has traditionally treated running a builtin command:
|
|
running any trap handler and breaking out of the loop.
|
|
|
|
aa. New variable: EXECIGNORE; a colon-separate list of patterns that will
|
|
cause matching filenames to be ignored when searching for commands.
|
|
|
|
bb. Aliases whose value ends in a shell metacharacter now expand in a way to
|
|
allow them to be `pasted' to the next token, which can potentially change
|
|
the meaning of a command (e.g., turning `&' into `&&').
|
|
|
|
4. New Features in Readline
|
|
|
|
a. The history truncation code now uses the same error recovery mechansim as
|
|
the history writing code, and restores the old version of the history file
|
|
on error. The error recovery mechanism handles symlinked history files.
|
|
|
|
b. There is a new bindable variable, `enable-bracketed-paste', which enables
|
|
support for a terminal's bracketed paste mode.
|
|
|
|
c. The editing mode indicators can now be strings and are user-settable
|
|
(new `emacs-mode-string', `vi-cmd-mode-string' and `vi-ins-mode-string'
|
|
variables). Mode strings can contain invisible character sequences.
|
|
Setting mode strings to null strings restores the defaults.
|
|
|
|
d. Prompt expansion adds the mode string to the last line of a multi-line
|
|
prompt (one with embedded newlines).
|
|
|
|
e. There is a new bindable variable, `colored-completion-prefix', which, if
|
|
set, causes the common prefix of a set of possible completions to be
|
|
displayed in color.
|
|
|
|
f. There is a new bindable command `vi-yank-pop', a vi-mode version of emacs-
|
|
mode yank-pop.
|
|
|
|
g. The redisplay code underwent several efficiency improvements for multibyte
|
|
locales.
|
|
|
|
h. The insert-char function attempts to batch-insert all pending typeahead
|
|
that maps to self-insert, as long as it is coming from the terminal.
|
|
|
|
i. rl_callback_sigcleanup: a new application function that can clean up and
|
|
unset any state set by readline's callback mode. Intended to be used
|
|
after a signal.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.3-release, and
|
|
the previous version, bash-4.3-rc2.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Only Posix-mode shells should exit on an assignment failure in the
|
|
temporary environment preceding a special builtin. This is how it's been
|
|
documented.
|
|
|
|
b. Fixed a bug that caused a failed special builtin to not exit a posix-mode
|
|
shell if the failing builtin was on the LHS of a && or ||.
|
|
|
|
c. Changed the handling of unquoted backslashes in regular expressions to be
|
|
closer to bash-4.2.
|
|
|
|
d. globstar (**) no longer traverses symbolic links that resolve to
|
|
directories. This eliminates some duplicate entries.
|
|
|
|
e. Fixed a bug that caused a SIGCHLD trap handler to not be able to change the
|
|
SIGCHLD disposition.
|
|
|
|
f. Fixed a bug that caused a crash when -x was enabled and a command
|
|
contained a printable multibyte (wide) character.
|
|
|
|
g. Fixed a bug that caused an interactive shell without line editing enabled
|
|
to read invalid data after receiving a SIGINT.
|
|
|
|
h. Fixed a bug that caused command word completion to fail if the directory in
|
|
$PATH where the completion would be found contained single or double quotes.
|
|
|
|
i. Fixed a bug that caused a shell with -v enabled to print commands in $()
|
|
multiple times.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug that caused `undo' to reference freed memory or null pointers.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. The [[ -v ]] option now understands array references (foo[1]) and returns
|
|
success if the referenced element has a value.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.3-rc2, and the
|
|
previous version, bash-4.3-rc1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that left variables set by printf -v marked as invisible.
|
|
|
|
b. Fixed an off-by-one error in a job control warning message.
|
|
|
|
c. Fixed a bug that caused the shell to crash after declaring a nameref variable
|
|
without a value.
|
|
|
|
d. Fixed a bug that caused asynchronous commands to not set $? correctly.
|
|
|
|
e. Fixed a bug that caused out-of-order execution when executing aliases with
|
|
embedded newlines containing `.' commands.
|
|
|
|
f. Fixed a bug that caused error messages generated by expansion errors in
|
|
`for' commands to have the wrong line number.
|
|
|
|
g. Fixed a bug that caused the `wait' builtin to not be interruptible in an
|
|
interactive shell with job control enabled.
|
|
|
|
h. Fixed a bug that caused SIGINT and SIGQUIT to not be trappable in
|
|
asynchronous subshell commands.
|
|
|
|
i. Bash now requires that the value assigned to a nameref variable be a valid
|
|
shell identifier (variable name or array reference).
|
|
|
|
j. Converting an existing variable to a nameref variable now turns off the
|
|
-i/-l/-u/-c attributes.
|
|
|
|
k. Displaying a nameref variable with `declare -p' now displays the nameref
|
|
variable and its value rather than following the nameref chain.
|
|
|
|
l. Fixed a problem with interrupt handling that caused a second and subsequent
|
|
SIGINT to be ignored by interactive shells.
|
|
|
|
m. Fixed a bug that caused certain positional parameter and array expansions
|
|
to mishandle (discard) null positional parameters and array elements.
|
|
|
|
n. The shell no longer blocks receipt of signals while running trap handlers
|
|
for those signals, and allows most trap handlers to be run recursively
|
|
(running trap handlers while a trap handler is executing).
|
|
|
|
o. The shell now handles backslashes in regular expression arguments to the
|
|
[[ command's =~ operator slightly differently, resulting in more
|
|
consistent behavior.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug that could cause readline to crash and seg fault attempting to
|
|
expand an empty history entry.
|
|
|
|
b. Fixed a bug that caused a bad entry in the $LS_COLORS variable to abort all
|
|
color processing but leave color enabled.
|
|
|
|
c. Fixed a bug that caused display problems with multi-line prompts containing
|
|
invisible characters on multiple lines.
|
|
|
|
d. Fixed a bug that caused effects made by undoing changes to a history line to
|
|
be discarded.
|
|
|
|
3. New Features in Bash
|
|
|
|
4. New Features in Readline
|
|
|
|
a. When creating shared libraries on Mac OS X, the pathname written into the
|
|
library (install_name) no longer includes the minor version number.
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.3-rc1, and the
|
|
previous version, bash-4.3-beta2.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug in bash completion that caused a tilde to be expanded even if
|
|
the `direxpand' option was not enabled.
|
|
|
|
b. Fixed a potential bug that could cause corrupted input in interactive shells
|
|
running without line editing and with `ignoreeof' enabled.
|
|
|
|
c. Fixed a bug that could cause failures when opening pipes back to shells
|
|
created to run process substitutions.
|
|
|
|
d. Fixed a bug that caused an assignment to TEXTDOMAIN to require TEXTDOMAINDIR
|
|
to be set in order to actually change the current text domain.
|
|
|
|
e. Changed the way redirections are printed to avoid confusion when the target
|
|
of an output redirection is a process substitution beginning with `>'.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Shared library building is now supported on Mac OS X 10.9 (Darwin 13).
|
|
|
|
3. New Features in Bash
|
|
|
|
a. `cd' has a new `-@' option to browse a file's extended attributes on
|
|
systems that support O_XATTR.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. There are additional default key bindings for MinGW32
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.3-beta2, and the
|
|
previous version, bash-4.3-beta.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that caused assignment to an unset variable using a negative
|
|
subscript to result in a segmentation fault.
|
|
|
|
b. Fixed a bug that caused assignment to a string variable using a negative
|
|
subscript to use the incorrect index.
|
|
|
|
c. Fixed a bug that caused some strings to be interpreted as invalid
|
|
extended globbing expressions when used with the help builtin.
|
|
|
|
d. Fixed a bug that caused an attempt to trap a signal whose disposition
|
|
cannot be changed to reference uninitialized memory.
|
|
|
|
e. Command completion now skips assignment statements preceding a command
|
|
name and completes the command.
|
|
|
|
f. Fixed a bug that caused `compgen -f' in a non-interactive shell to dump
|
|
core under certain circumstances.
|
|
|
|
g. Fixed a bug that caused the `read -N' to misbehave when the input stream
|
|
contains 0xff.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Changed message when an incremental search fails to include "failed" in
|
|
the prompt and display the entire search string instead of just the last
|
|
matching portion.
|
|
|
|
b. Fixed a bug that caused an arrow key typed to an incremental search prompt
|
|
to process the key sequence incorrectly.
|
|
|
|
c. Additional key bindings for arrow keys on MinGW.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. The help builtin now attempts substring matching (as it did through
|
|
bash-4.2) if exact string matching fails.
|
|
|
|
b. The fc builtin now interprets -0 as the current command line.
|
|
|
|
c. Completing directory names containing shell variables now adds a trailing
|
|
slash if the expanded result is a directory.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. rl_change_environment: new application-settable variable that controls
|
|
whether or not Readline modifies the environment (currently readline
|
|
modifies only LINES and COLUMNS).
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.3-beta, and the
|
|
previous version, bash-4.3-alpha.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug in the prompt directory name "trimming" code that caused
|
|
memory corruption and garbled the results.
|
|
|
|
b. Fixed a bug that caused single quotes that resulted from $'...' quoting
|
|
in the replacement portion of a double-quoted ${word/pat/rep} expansion
|
|
to be treated as quote characters.
|
|
|
|
c. Fixed a bug that caused assignment statements preceding a command word to
|
|
result in assignment statements following a declaration command to not be
|
|
expanded like assignment statements.
|
|
|
|
d. Fixed a bug with variable search order in the presence of local variables
|
|
with the same name as variables in the temporary environment supplied to
|
|
a shell function.
|
|
|
|
e. Fixed a bug that caused constructs like 1<(2) to be interpreted as process
|
|
substitutions even in an arithmetic context.
|
|
|
|
f. Fixed several cases where `invisible' variables (variables with attributes
|
|
but no values, which are technically unset) were treated incorrectly.
|
|
|
|
g. Fixed a bug that caused group commands in pipelines that were not the
|
|
last element to not run the EXIT trap.
|
|
|
|
h. Fixed a bug that caused `unset -n' to not unset a nameref variable in
|
|
certain cases.
|
|
|
|
i. Fixed the nameref circular reference checking to be less strict and only
|
|
disallow a nameref variable with the same value as its name at the global
|
|
scope.
|
|
|
|
j. Fixed a bug that caused trap handlers to be executed recursively,
|
|
corrupting internal data structures.
|
|
|
|
k. Fixed a bug that could result in bash not compiling if certain options were
|
|
not enabled.
|
|
|
|
l. Fixed a bug that caused the arithmetic expansion code to attempt variable
|
|
assignments when operator precedence prohibited them.
|
|
|
|
m. Word expansions like ${foo##bar} now understand indirect variable references.
|
|
|
|
n. Fixed a bug that caused `declare -fp name' to not display a function
|
|
definition.
|
|
|
|
o. Fixed a bug that caused asynchronous child processes to modify the stdin
|
|
file pointer when bash was using it to read a script, which modified the
|
|
parent's value as well.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug in vi mode that caused the arrow keys to set the saved last
|
|
vi-mode command to the wrong value.
|
|
|
|
b. Fixed a bug that caused double-quoted strings to be scanned incorrectly
|
|
when being used as the value of a readline variable assignment.
|
|
|
|
c. Fixed a bug with vi mode that prevented `.' from repeating a command
|
|
entered on a previous line (command).
|
|
|
|
d. Fixed a bug that could cause completion to core dump if it was interrupted
|
|
by a signal.
|
|
|
|
e. Readline now sends the meta-key enable string to the terminal if the
|
|
terminal has been successfully initialized.
|
|
|
|
f. Readline now calls the signal hook after resizing the terminal when it
|
|
receives a SIGWINCH.
|
|
|
|
g. Fixed a bug that could cause the history list code to perform an out-of-
|
|
bounds array reference if the history list is empty.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. Shells started to run process substitutions now run any trap set on EXIT.
|
|
|
|
b. There is now a configure-time option to enable the globasciiranges option
|
|
by default.
|
|
|
|
c. The read builtin now checks its first variable argument for validity before
|
|
trying to read any input.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.3-alpha,
|
|
and the previous version, bash-4.2-release.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed several bugs concerning incomplete bracket expressions in filename
|
|
generation (globbing) patterns.
|
|
|
|
b. Fixed a bug with single quotes and WORD in ${param op WORD} when running
|
|
in Posix mode.
|
|
|
|
c. Fixed a bug that caused the pattern removal and pattern substitution word
|
|
expansions and case statement word expansion to not match the empty string.
|
|
|
|
d. Fixed a bug that caused the tzset() function to not work after changing
|
|
the TZ enviroment variable.
|
|
|
|
e. Fixed a bug that caused the RHS of an assignment statement to undergo
|
|
word splitting when it contained an unquoted $@.
|
|
|
|
f. Fixed bugs that caused the shell to not react to a SIGINT sent while
|
|
waiting for a child process to exit.
|
|
|
|
g. Bash doesn't try to run things in a signal handler context when it gets a
|
|
signal (SIGINT/SIGHUP/etc) while reading input using readline but still
|
|
be responsive to terminating signals.
|
|
|
|
h. Fixed a bug that caused bash to go into an infinite loop if a filename
|
|
to be matched contained an invalid multibyte character.
|
|
|
|
i. Fixed a bug that caused PS4 to end up being truncated if it is longer
|
|
than 128 bytes.
|
|
|
|
j. Fixed a bug that caused brace expansion to not skip over double-quoted
|
|
command substitution.
|
|
|
|
k. System-specific updates for: DJGPP, HP/UX, Mac OS X
|
|
|
|
l. Fixed a bug in displaying commands that caused redirections to be associated
|
|
with the wrong part of the command.
|
|
|
|
m. Fixed the coproc cleanup to unset the appropriate shell variables when a
|
|
coproc terminates.
|
|
|
|
n. Fixed a bug that caused `fc' to dump core due to incorrect calculation of
|
|
the last history entry.
|
|
|
|
o. Added workarounds for FreeBSD's implementation of faccessat/eaccess and
|
|
`test -x'.
|
|
|
|
p. Fixed a bug that caused the shell to not match patterns containing
|
|
control-A.
|
|
|
|
q. Fixed a bug that could result in doubled error messages when the `printf'
|
|
builtin got a write error.
|
|
|
|
r. Fixed a bug that caused the shell to not correctly expand words containing
|
|
multiple consecutive quoted empty strings (""""""aa).
|
|
|
|
s. Fixed a bug that caused the shell to not correctly parse multi-line
|
|
process substitutions containing comments and quoted strings.
|
|
|
|
t. Fixed a problem with the bash malloc's internal idea of the top of the
|
|
memory heap that resulted in incorrect decisions to try to reduce the
|
|
break and give memory back to the kernel.
|
|
|
|
u. There are changes to the expansions peformed on compound array assignments,
|
|
in an effort to make foo=( [ind1]=bar [ind2]=baz ) identical to
|
|
foo[ind1]=bar foo[ind2]=baz.
|
|
|
|
v. Bash now reports an error if `read -a name' is used when `name' is an
|
|
existing associative array.
|
|
|
|
w. Fixed a bug that allowed an attempted assignment to a readonly variable
|
|
in an arithmetic expression to not return failure.
|
|
|
|
x. Fixed several bugs that caused completion functions to be invoked even when
|
|
the cursor was before the first word in the command.
|
|
|
|
y. Fixed a bug that caused parsing a command substitution to overwrite the
|
|
parsing state associated with the complete input line.
|
|
|
|
z. Fixed several bugs with the built-in snprintf replacement and field widths
|
|
and floating point.
|
|
|
|
aa. Fixed a bug that caused incorrect offset calculations and input buffer
|
|
corruption when reading files longer than 2^31 bytes.
|
|
|
|
bb. Fixed several bugs where bash performed arithmetic evaluation in contexts
|
|
where evaluation is suppressed.
|
|
|
|
cc. Fixed a bug that caused bash to close FIFOs used for process substitution
|
|
too early when a shell function was executing, but protect against using
|
|
all file descriptors when the shell functions are invoked inside loops.
|
|
|
|
dd. Added checks for printable (and non-printable) multibyte characters for
|
|
use in error messages.
|
|
|
|
ee. Fixed a bug that caused ^O (operate-and-get-next) to not work correctly
|
|
at the end of the history list.
|
|
|
|
ff. Fixed a bug that caused command-oriented history to incorrectly combine
|
|
here documents into one line.
|
|
|
|
gg. Fixed a bug that caused importing SHELLOPTS from the environment into a
|
|
Posix-mode shell to print an error message and refuse to parse it.
|
|
|
|
hh. Fixed a bug that caused the shell to delete an extra history entry when
|
|
using `history -s'.
|
|
|
|
ii. Fixed a bug that caused floating-point exceptions and overflow errors
|
|
for the / and % arithmetic operators when using INTMAX_MIN and -1.
|
|
|
|
jj. Fixed a bug that caused parsing errors when reading an arithmetic for
|
|
loop inside a command substitution.
|
|
|
|
kk. Fixed a bug that caused a readonly function to be unset when unset was
|
|
called without the -f or -v option.
|
|
|
|
ll. Fixed several bugs in the code that quotes characters special to regular
|
|
expressions when used in a quoted string on the RHS of the =~ operator
|
|
to the [[ command.
|
|
|
|
mm. Fixed a bug that caused redirections to fail because the file descriptor
|
|
limit was set to a value less than 10.
|
|
|
|
nn. Fixed a bug that caused the `read' builtin to execute code in a signal
|
|
handler context if read timed out.
|
|
|
|
oo. Fixed a bug that caused extended globbing patterns to not match files
|
|
beginning with `.' correctly when a `.' was explicitly supplied in the
|
|
pattern.
|
|
|
|
pp. Fixed a bug that caused key sequences longer than two characters to not
|
|
work when used with `bind -x'.
|
|
|
|
qq. Fixed a bug that resulted in redefined functions having the wrong source
|
|
file names in BASH_SOURCE.
|
|
|
|
rr. Fixed a bug that caused the read builtin to assign null strings to variables
|
|
when using `read -N', which caused core dumps when referenced
|
|
|
|
ss. Fixed a bug that caused `bash -m script' to not enable job control while
|
|
running the script.
|
|
|
|
tt. Fixed a bug that caused `printf -v var' to dump core when used with the
|
|
%b format code.
|
|
|
|
uu. Fixed a bug that caused the shell to exit with the wrong status if -e was
|
|
active and the shell exited on a substitution error.
|
|
|
|
vv. Fixed a bug that caused the shell to seg fault if an array variable with
|
|
the same name as an existing associative array was implicitly created by
|
|
an assignment (declare a[n]=b).
|
|
|
|
ww. Fixed a bug that caused a redirection to misbehave if the number specified
|
|
for a file descriptor overflows an intmax_t.
|
|
|
|
xx. Fixed several bugs with the handling of valid and invalid unicode character
|
|
values when used with the \u and \U escape sequences to printf and $'...'.
|
|
|
|
yy. Fixed a bug that caused tildes to not be escaped in expanded filenames,
|
|
making them subject to later expansion.
|
|
|
|
zz. When using the pattern substitution word expansion, bash now runs the
|
|
replacement string through quote removal, since it allows quotes in that
|
|
string to act as escape characters. This is not backwards compatible, so
|
|
it can be disabled by setting the bash compatibility mode to 4.2.
|
|
|
|
aaa. Fixed the rest of the cases where the shell runs non-allowed code in a
|
|
signal handler context.
|
|
|
|
bbb. Fixed a bug that caused spurious DEL characters (\177) to appear in
|
|
double-quoted expansion where the RHS is evaluated to the empty string.
|
|
|
|
ccc. Fixed a bug that caused the use of the shell's internal random number
|
|
generator for temporary file names to perturb the random number
|
|
sequence.
|
|
|
|
ddd. Fixed several bugs that caused `declare -g' to not set the right global
|
|
variables or to misbehave when declaring global indexed arrays.
|
|
|
|
eee. Fixed a logic bug that caused extended globbing in a multibyte locale to
|
|
cause failures when using the pattern substititution word expansions.
|
|
|
|
fff. Fixed a bug that caused the `lastpipe' option to corrupt the file
|
|
descriptor used to read the script.
|
|
|
|
ggg. Fixed a bug that causes the shell to delete DEL characters in the
|
|
expanded value of variables used in the same quoted string as variables
|
|
that expand to nothing.
|
|
|
|
hhh. Fixed a bug that caused the shell to assign the wrong value from an
|
|
assignment like (( x=7 )) when `x' was an existing array variable.
|
|
|
|
iii. Fixed a bug that caused the shell to misbehave when generating sequences
|
|
and the boundary values overflow an intmax_t.
|
|
|
|
jjj. Fixed a bug caused expansion errors if an expansion of "$@" appeared
|
|
next to another expansion (e.g.. "${@}${x}").
|
|
|
|
kkk. Fixed a potential buffer overflow bug when performing /dev/fd expansion.
|
|
|
|
lll. Fixed a bug that resulted in an extra semicolon being added to compound
|
|
assignments when they were added to the history list.
|
|
|
|
mmm. Fixed a bug that caused mapfile to read one extra line from the input.
|
|
|
|
nnn. Fixed a bug that caused the mail checking code to use uninitialized
|
|
values.
|
|
|
|
ooo. Fixed a bug that prevented history timestamps from being saved if the
|
|
history comment character is unset.
|
|
|
|
ppp. Fixed a bug that caused the case-modifying expansions to not work with
|
|
multibyte characters.
|
|
|
|
qqq. Fixed a bug that caused the edit-and-execute bindable readline command
|
|
to see the wrong data if invoked in the middle of a multi-line quoted
|
|
string.
|
|
|
|
rrr. Fixed a bug that resulted in the shell returning the wrong exit status
|
|
for a background command on systems that recycle PIDs very quickly.
|
|
|
|
sss. Fixed a bug that caused asynchronous group commands to not run any EXIT
|
|
trap defined in the body of the command.
|
|
|
|
ttt. Fixed a bug that caused `eval "... ; return"' to not clean up properly.
|
|
|
|
uuu. Fixed a bug that caused the shell to dump core if `read' reads an escaped
|
|
IFS whitespace character.
|
|
|
|
vvv. Fixed a bug that caused BASH_COMMAND to be set to an incorrect value when
|
|
executing a (...) subshell.
|
|
|
|
www. Fixed a couple of pointer aliasing bugs with the token string in arithmetic
|
|
evaluation.
|
|
|
|
xxx. Fixed a bug with parsing multi-line command substitutions when reading
|
|
the `do' keyword followed by whitespace.
|
|
|
|
yyy. Fixed a bug that caused the shell to seg fault if the time given to the
|
|
printf %(...)T format overflowed the value accepted by localtime(3).
|
|
|
|
zzz. Fixed a problem with displaying help topics in two columns when the
|
|
translated text contained multibyte characters.
|
|
|
|
aaaa. Fixed a bug with the extended globbing pattern matcher where a `*' was
|
|
followed by a negated extended glob pattern.
|
|
|
|
bbbb. Fixed a race condition with short-lived coproc creation and reaping that
|
|
caused the child process to be reaped before the various coproc shell
|
|
variables were initialized.
|
|
|
|
cccc. Fixed a bug where turning off `errexit' in command substitution subshells
|
|
was not reflected in $SHELLOPTS.
|
|
|
|
dddd. Partially fixed an inconsistency in how the shell treated shell
|
|
functions run from an EXIT trap.
|
|
|
|
eeee. Fixed a bug in how the shell invalidated FIFOs used for process
|
|
substitution when executing a pipeline (once rather than in every child).
|
|
|
|
ffff. Fixed a bug that occurred when expanding a special variable ($@, $*)
|
|
within double quotes and the expansion resulted in an empty string.
|
|
|
|
gggg. Fixed bugs with executing a SIGCHLD trap handler to make sure that it's
|
|
executed once per exited child.
|
|
|
|
hhhh. Fixed a bug that caused `declare' and `test' to find variables that
|
|
had been given attributes but not assigned values. Such variables are
|
|
not set.
|
|
|
|
iiii. Fixed a bug that caused commands in process substitutions to not look in
|
|
the local temporary environment when performing word expansions.
|
|
|
|
jjjj. Fixed several problems with globstar expansions (**/**) returning null
|
|
filenames and multiple instances of the same pathname.
|
|
|
|
kkkk. Fixed an oversight that did not allow the exit status of `coproc' to
|
|
be inverted using `!'.
|
|
|
|
llll. Fixed a bug that caused the -e option to be re-enabled using `set -e'
|
|
even when executing in a context where -e is ignored.
|
|
|
|
mmmm. Fixed a (mostly theoretical) bug with input lines longer than SIZE_MAX.
|
|
|
|
nnnn. Fixed a bug that could result in double evaluation of command
|
|
substitutions when they appear in failed redirections.
|
|
|
|
oooo. Fixed a bug that could cause seg faults during `mapfile' callbacks if
|
|
the callback unsets the array variable mapfile is using.
|
|
|
|
pppp. Fixed several problems with variable assignments using ${var:=value}
|
|
when the variable assignment is supposed to have side effects.
|
|
|
|
qqqq. Fixed a bug that caused a failure of an assignment statement preceding a
|
|
builtin caused the next invocation of a special builtin to exit the shell.
|
|
|
|
rrrr. Fixed several problems with IFS when it appears in the temporary environment
|
|
and is used in redirections.
|
|
|
|
ssss. Fixed a problem that caused IFS changes using ${IFS:=value} to modify
|
|
how preceding expansions were split.
|
|
|
|
tttt. Fixed a problem that caused subshells to not run an EXIT trap they set.
|
|
|
|
uuuu. Fixed a problem that caused shells started in posix mode to attempt to
|
|
import shell functions with invalid names from the environment. We now
|
|
print a warning.
|
|
|
|
vvvv. Worked around a kernel problem that caused SIGCHLD to interrupt open(2)
|
|
on a FIFO used for process substitution, even if the SIGCHLD handler was
|
|
installed with the SA_RESTART flag.
|
|
|
|
wwww. Fixed a problem that resulted in inconsistent expansion of $* and ${a[*]}.
|
|
|
|
xxxx. Fixed a problem that caused `read -t' to crash when interrupted by
|
|
SIGINT.
|
|
|
|
yyyy. Fixed a problem that caused pattern removal to fail randomly because the
|
|
pattern matcher read beyond the end of a string.
|
|
|
|
zzzz. Fixed a bug that caused core dumps when shell functions tried to create
|
|
local shadow copies of special variables like GROUPS.
|
|
|
|
aaaaa. Fixed a bug that caused SIGTERM to be occasionally lost by children of
|
|
interactive shells when it arrived before the child process reset the
|
|
handler from SIG_DFL.
|
|
|
|
bbbbb. Fixed a bug that caused redirections like <&n- to leave file descriptor
|
|
n closed if executed with a builtin command.
|
|
|
|
ccccc. Fixed a bug that caused incorrect completion quoting when completing a
|
|
word containing a globbing character with `show-all-if-ambiguous' set.
|
|
|
|
ddddd. Fixed a bug that caused printf's %q format specifier not to quote a
|
|
tilde even if it appeared in a location where it would be subject to
|
|
tilde expansion.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug that did not allow the `dd', `cc', or `yy' vi editing mode
|
|
commands to work on the entire line.
|
|
|
|
b. Fixed a bug that caused redisplay problems with prompts longer than 128
|
|
characters and history searches.
|
|
|
|
c. Fixed a bug that caused readline to try and run code to modify its idea
|
|
of the screen size in a signal handler context upon receiving a SIGWINCH.
|
|
|
|
d. Fixed a bug that caused the `meta' key to be enabled beyond the duration
|
|
of an individual call top readline().
|
|
|
|
e. Added a workaround for a wcwidth bug in Mac OS X that caused readline's
|
|
redisplay to mishandle zero-width combining characters.
|
|
|
|
f. Fixed a bug that caused readline to `forget' part of a key sequence when
|
|
a multiple-key sequence caused it to break out of an incremental search.
|
|
|
|
g. Fixed bugs that caused readline to execute code in a signal handler
|
|
context if interrupted while reading from the file system during completion.
|
|
|
|
h. Fixed a bug that caused readline to `forget' part of a key sequence when
|
|
reading an unbound multi-character key sequence.
|
|
|
|
i. Fixed a bug that caused Readline's signal handlers to be installed beyond
|
|
the bounds of a single call to readline().
|
|
|
|
j. Fixed a bug that caused the `.' command to not redo the most recent `R'
|
|
command in vi mode.
|
|
|
|
k. Fixed a bug that caused ignoring case in completion matches to result in
|
|
readline using the wrong match.
|
|
|
|
l. Paren matching now works in vi insert mode.
|
|
|
|
m. Fix menu-completion to make show-all-if-ambiguous and menu-complete-display-prefix
|
|
work together.
|
|
|
|
n. Fixed a bug that didn't allow the `cc', `dd', or `yy' commands to be redone
|
|
in vi editing mode.
|
|
|
|
o. Fixed a bug that caused the filename comparison code to not compare
|
|
multibyte characters correctly when using case-sensitive or case-mapping
|
|
comparisons.
|
|
|
|
p. Fixed the input reading loop to call the input hook function only when there
|
|
is no terminal input available.
|
|
|
|
q. Fixed a bug that caused binding a macro to a multi-character key sequence
|
|
where the sequence and macro value share a common prefix to not perform
|
|
the macro replacement.
|
|
|
|
r. Fixed several redisplay errors with multibyte characters and prompts
|
|
containing invisible characters when using horizontal scrolling.
|
|
|
|
s. Fixed a bug that caused redisplay errors when trying to overwrite
|
|
existing characters using multibyte characters.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. The `helptopic' completion action now maps to all the help topics, not just
|
|
the shell builtins.
|
|
|
|
b. The `help' builtin no longer does prefix substring matching, so `help read'
|
|
does not match `readonly'.
|
|
|
|
c. The shell can be compiled to not display a message about processes that
|
|
terminate due to SIGTERM.
|
|
|
|
d. Non-interactive shells now react to the setting of checkwinsize and set
|
|
LINES and COLUMNS after a foreground job exits.
|
|
|
|
e. There is a new shell option, `globasciiranges', which, when set to on,
|
|
forces globbing range comparisons to use character ordering as if they
|
|
were run in the C locale.
|
|
|
|
f. There is a new shell option, `direxpand', which makes filename completion
|
|
expand variables in directory names in the way bash-4.1 did.
|
|
|
|
g. In Posix mode, the `command' builtin does not change whether or not a
|
|
builtin it shadows is treated as an assignment builtin.
|
|
|
|
h. The `return' and `exit' builtins accept negative exit status arguments.
|
|
|
|
i. The word completion code checks whether or not a filename containing a
|
|
shell variable expands to a directory name and appends `/' to the word
|
|
as appropriate. The same code expands shell variables in command names
|
|
when performing command completion.
|
|
|
|
j. In Posix mode, it is now an error to attempt to define a shell function
|
|
with the same name as a Posix special builtin.
|
|
|
|
k. When compiled for strict Posix conformance, history expansion is disabled
|
|
by default.
|
|
|
|
l. The history expansion character (!) does not cause history expansion when
|
|
followed by the closing quote in a double-quoted string.
|
|
|
|
m. `complete' and its siblings compgen/compopt now takes a new `-o noquote'
|
|
option to inhibit quoting of the completions.
|
|
|
|
n. Setting HISTSIZE to a value less than zero causes the history list to be
|
|
unlimited (setting it 0 zero disables the history list).
|
|
|
|
o. Setting HISTFILESIZE to a value less than zero causes the history file size
|
|
to be unlimited (setting it to 0 causes the history file to be truncated
|
|
to zero size).
|
|
|
|
p. The `read' builtin now skips NUL bytes in the input.
|
|
|
|
q. There is a new `bind -X' option to print all key sequences bound to Unix
|
|
commands.
|
|
|
|
r. When in Posix mode, `read' is interruptible by a trapped signal. After
|
|
running the trap handler, read returns 128+signal and throws away any
|
|
partially-read input.
|
|
|
|
s. The command completion code skips whitespace and assignment statements
|
|
before looking for the command name word to be completed.
|
|
|
|
t. The build process has a new mechanism for constructing separate help files
|
|
that better reflects the current set of compilation options.
|
|
|
|
u. The -nt and -ot options to test now work with files with nanosecond
|
|
timestamp resolution.
|
|
|
|
v. The shell saves the command history in any shell for which history is
|
|
enabled and HISTFILE is set, not just interactive shells.
|
|
|
|
w. The shell has `nameref' variables and new -n(/+n) options to declare and
|
|
unset to use them, and a `test -R' option to test for them.
|
|
|
|
x. The shell now allows assigning, referencing, and unsetting elements of
|
|
indexed arrays using negative subscripts (a[-1]=2, echo ${a[-1]}) which
|
|
count back from the last element of the array.
|
|
|
|
y. The {x}<word redirection feature now allows words like {array[ind]} and
|
|
can use variables with special meanings to the shell (e.g., BASH_XTRACEFD).
|
|
|
|
z. There is a new CHILD_MAX special shell variable; its value controls the
|
|
number of exited child statuses the shell remembers.
|
|
|
|
aa. There is a new configuration option (--enable-direxpand-default) that
|
|
causes the `direxpand' shell option to be enabled by default.
|
|
|
|
bb. Bash does not do anything special to ensure that the file descriptor
|
|
assigned to X in {x}<foo remains open after the block containing it
|
|
completes.
|
|
|
|
cc. The `wait' builtin has a new `-n' option to wait for the next child to
|
|
change status.
|
|
|
|
dd. The `printf' %(...)T format specifier now uses the current time if no
|
|
argument is supplied.
|
|
|
|
ee. There is a new variable, BASH_COMPAT, that controls the current shell
|
|
compatibility level.
|
|
|
|
ff. The `popd' builtin now treats additional arguments as errors.
|
|
|
|
gg. The brace expansion code now treats a failed sequence expansion as a
|
|
simple string and will continue to expand brace terms in the remainder
|
|
of the word.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. Readline is now more responsive to SIGHUP and other fatal signals when
|
|
reading input from the terminal or performing word completion but no
|
|
longer attempts to run any not-allowable functions from a signal handler
|
|
context.
|
|
|
|
b. There are new bindable commands to search the history for the string of
|
|
characters between the beginning of the line and the point
|
|
(history-substring-search-forward, history-substring-search-backward)
|
|
|
|
c. Readline allows quoted strings as the values of variables when setting
|
|
them with `set'. As a side effect, trailing spaces and tabs are ignored
|
|
when setting a string variable's value.
|
|
|
|
d. The history library creates a backup of the history file when writing it
|
|
and restores the backup on a write error.
|
|
|
|
e. New application-settable variable: rl_filename_stat_hook: a function called
|
|
with a filename before using it in a call to stat(2). Bash uses it to
|
|
expand shell variables so things like $HOME/Downloads have a slash
|
|
appended.
|
|
|
|
f. New bindable function `print-last-kbd-macro', prints the most-recently-
|
|
defined keyboard macro in a reusable format.
|
|
|
|
g. New user-settable variable `colored-stats', enables use of colored text
|
|
to denote file types when displaying possible completions (colored analog
|
|
of visible-stats).
|
|
|
|
h. New user-settable variable `keyseq-timout', acts as an inter-character
|
|
timeout when reading input or incremental search strings.
|
|
|
|
i. New application-callable function: rl_clear_history. Clears the history list
|
|
and frees all readline-associated private data.
|
|
|
|
j. New user-settable variable, show-mode-in-prompt, adds a characters to the
|
|
beginning of the prompt indicating the current editing mode.
|
|
|
|
k. New application-settable variable: rl_input_available_hook; function to be
|
|
called when readline needs to check whether there is data available on its
|
|
input source. The default hook checks rl_instream.
|
|
|
|
l. Readline calls an application-set event hook (rl_signal_event_hook) after
|
|
it gets a signal while reading input (read returns -1/EINTR but readline
|
|
does not handle the signal immediately) to allow the application to handle
|
|
or otherwise note it. Not currently called for SIGHUP or SIGTERM.
|
|
|
|
m. If the user-settable variable `history-size' is set to a value less than
|
|
0, the history list size is unlimited.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.2-release,
|
|
and the previous version, bash-4.2-rc2.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that caused some variables to be clobbered by a longjmp,
|
|
resulting in stack corruption.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.2-rc2,
|
|
and the previous version, bash-4.2-rc1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Changes to bash_directory_completion_hook so that it's assigned to the
|
|
readline rl_directory_rewrite_hook variable, which modifies the directory
|
|
name passed to opendir without modifying the directory name the user
|
|
typed.
|
|
|
|
b. Fixed bug in select builtin that caused it to not terminate correctly if
|
|
the read timed out due to $TMOUT.
|
|
|
|
c. Fixed a problem that resulted in non-repeatable sequences of random
|
|
numbers when RANDOM=0.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.2-rc1,
|
|
and the previous version, bash-4.2-beta.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that caused some redirection errors to leak file descriptors.
|
|
|
|
b. Fixed a bug that caused unary `+' and `-' arithmetic operators to have a
|
|
higher precedence than unary `!' and `~'.
|
|
|
|
c. Fixed a bug that caused simple commands in a pipeline to affect the exit
|
|
status ($?) seen by subsequent pipeline commands.
|
|
|
|
d. A number of cygwin-specific changes to avoid the use of text-mode files
|
|
and file access, and to make sure that \r is handled correctly.
|
|
|
|
e. Fixed a bug that caused the read builtin to not return failure if an
|
|
attempt is made to assign to a readonly variable.
|
|
|
|
f. Fixed a bug that caused some builtin usage messages to not be translated.
|
|
|
|
g. Fixed a bug that caused the getopts builtin to not return failure if an
|
|
attempt is made to assign to a readonly variable. Now it returns 2.
|
|
|
|
h. Fixed the cd and pwd builtins to return failure if PWD is readonly and
|
|
cannot be assigned to.
|
|
|
|
i. Added code to check the return value of access(2) on Solaris systems,
|
|
since it returns success for executable tests (e.g., `test -x') when
|
|
run by root, even if the file permissions don't allow execution.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug that caused directory names in words to be completed to not
|
|
be dequoted correctly.
|
|
|
|
3. New Features in Bash
|
|
|
|
4. New Features in Readline
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.2-beta,
|
|
and the previous version, bash-4.2-alpha.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that caused the \W prompt string escape to not add a closing
|
|
NULL.
|
|
|
|
b. Fixed a bug that caused partially-quoted words that were not subject to
|
|
word splitting to retained quoted NULLs.
|
|
|
|
c. Added considerable efficiency speedups when pattern matching in multibyte
|
|
locales by skipping multibyte character functions where possible.
|
|
|
|
d. Added considerable speedups to variable expansion when in multibyte locales.
|
|
|
|
e. Fixed a bug that caused the expansion of $* when there are no positional
|
|
parameters to cause the shell to dump core when used in a pattern
|
|
matching context.
|
|
|
|
f. Fixed a bug that caused variable expansions preceding regular builtins to
|
|
not change the shell environment during their execution.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug that made an explicit argument of 0 to yank-last-arg behave
|
|
as if it were a negative argument.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.2-alpha,
|
|
and the previous version, bash-4.1-release.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug in the parser when processing alias expansions containing
|
|
quoted newlines.
|
|
|
|
b. Fixed a memory leak in associative array expansion.
|
|
|
|
c. Fixed a bug that caused quoted here-strings to be requoted when printed.
|
|
|
|
d. Fixed a bug in arithmetic expansion that caused the index in an array
|
|
expansion to be evaluated twice under certain circumstances.
|
|
|
|
e. Fixed several bugs with the expansion and display of variables that have
|
|
been given attributes but not values and are technically unset.
|
|
|
|
f. Fixed a bug that caused core dumps when using filename completion that
|
|
expands to a filename containing a globbing character.
|
|
|
|
g. Fixed a bug that caused assignment statements preceding a special builtin
|
|
when running in Posix mode to not persist after the builtin completed
|
|
when the special builtin was executed in a shell function without any
|
|
local variables.
|
|
|
|
h. Fixed a bug that caused a command to remain in the hash table even after
|
|
`hash command' did not find anything if there was already an existing
|
|
hashed pathname.
|
|
|
|
i. Fixed several bugs caused by executing unsafe functions from a signal
|
|
handler in the cases where a signal handler is executed immediately
|
|
rather than setting a flag for later execution.
|
|
|
|
j. Fixed a bug that caused some internal flag variables to be set
|
|
incorrectly if `read -t' timed out.
|
|
|
|
k. Fixed a Posix compatibility issue by making sure that a backslash escaping
|
|
a `}' within a double-quoted ${...} parameter expansion is removed as part
|
|
of the parameter expansion.
|
|
|
|
l. Fixed a bug that caused execution of a trap to overwrite PIPESTATUS.
|
|
|
|
m. Fixed a bug that caused here documents to not be displayed correctly
|
|
when attached to commands inside compound commands.
|
|
|
|
n. Fixed a bug that caused the printf builtin to use the wrong precision
|
|
when using the `*' modifier.
|
|
|
|
o. Fixed a bug that caused an arriving SIGCHLD to interrupt output functions
|
|
like those invoked by echo or printf.
|
|
|
|
p. Changed to use a more robust mechanism than eaccess(2) when test is
|
|
checking filenames for execution permission.
|
|
|
|
q. Fixed a bug that caused spurious semicolons to be added into the command
|
|
history in certain cases.
|
|
|
|
r. Fixed a bug that caused the shell to free non-allocated memory when
|
|
unsetting element 0 of an associative array after it was assigned
|
|
implicitly.
|
|
|
|
s. Fixed a bug that could cause the shell to dump core if using the `v'
|
|
vi editing command on a multi-line command.
|
|
|
|
t. Fixed a bug that left FIFOs opened by process substitutions open long
|
|
enough to potentially cause file descriptor exhaustion when running a
|
|
shell function or shell builtin.
|
|
|
|
u. Fixed a bug that caused the history expansion functions to not recognize
|
|
process substitution or extended glob patterns as single words.
|
|
|
|
v. Fixed a bug that caused restricted shells to set a restricted command's
|
|
exit status incorrectly.
|
|
|
|
w. Fixed a bug that caused bash to ignore the wrong set of filenames when
|
|
completing a command using the `complete-filename' readline command.
|
|
|
|
x. Fixed a bug that caused a -PID argument following a -s sig or -n sig to
|
|
not be interpreted as a signal specification.
|
|
|
|
y. Changed posix-mode behavior of a parse error in a `.' script or `eval'
|
|
command to exit the shell under Posix-specified conditions. Previous
|
|
versions printed a warning.
|
|
|
|
z. Fixed a bug in \W prompt expansion that resulted in incorrect expansion
|
|
in the event of overlapping strings.
|
|
|
|
aa. Fixed a bug that caused the := parameter expansion operator to return the
|
|
wrong value as the result of the expansion.
|
|
|
|
bb. When in Posix mode, a single quote is not treated specially in a
|
|
double-quoted ${...} expansion, unless the expansion operator is
|
|
# or % or the non-Posix `//', `^', and `,'. In particular, it does
|
|
not define a new quoting context. This is from Posix interpretation 221.
|
|
|
|
cc. Fixed a bug that inadvertently allowed program names containing slashes
|
|
to be entered into the command hash table.
|
|
|
|
dd. Fixed a bug that caused the select builtin to incorrectly compute the
|
|
display width of the arguments in the presence of multibyte characters.
|
|
|
|
ee. Fixed a bug that caused bash to not change the xtrace file descriptor if
|
|
BASH_XTRACEFD was found in the shell environment at startup.
|
|
|
|
ff. Fixed a memory leak in the pattern removal parameter expansion.
|
|
|
|
gg. Fixed a bug that caused SIGINT to fail to interrupt a nested loop if the
|
|
loop was in a pipeline.
|
|
|
|
hh. Fixed a problem in $(...) parsing that caused the parser to add an extra
|
|
space to a here-document delimiter if the first word contained a `/'.
|
|
|
|
ii. Fixed a bug that caused functions defined with the `function' reserved
|
|
word to require braces around the function body.
|
|
|
|
jj. Fixed a bug that caused bash to dump core when a variable expansion being
|
|
used as an array subscript failed.
|
|
|
|
kk. Fixed a bug that caused bash to dump core if the case-modification
|
|
expansions were used on a variable with a null value.
|
|
|
|
ll. Fixed a bug that caused partially-quoted strings to be split incorrectly
|
|
if a variable with a null value was expanded within double quotes.
|
|
|
|
mm. The pattern substitution word expansion has been sped up dramatically
|
|
when running in a locale with multibyte characters.
|
|
|
|
nn. Fixed a bug that caused history -a to not write the correct lines to
|
|
the history file if all the new lines in the history list were added
|
|
since the last time the history file was read or written.
|
|
|
|
oo. Fixed a bug that caused completion of a word with an unclosed `` command
|
|
substitution to set the prompt incorrectly.
|
|
|
|
pp. Fixed a bug that caused extended globbing patterns in $HISTIGNORE or
|
|
$GLOBIGNORE to be incorrectly scanned.
|
|
|
|
qq. Fixed a bug caused by closing file descriptors 3-20 on shell startup. The
|
|
shell now sets them to close-on-exec.
|
|
|
|
rr. Fixed a bug that caused the exit status of `exec file' to be set incorrectly
|
|
if `file' was a directory.
|
|
|
|
ss. Fixed a bug in the `.' builtin to make a non-interactive posix-mode shell
|
|
exit if the file argument to `.' is not found. Prefixing exec with
|
|
`command' makes the shell not exit. Posix requires this behavior.
|
|
|
|
tt. Fixed a bug that caused `sh -c 'command exec; exit 1' to hang.
|
|
|
|
uu. Fixed a bug in $(...) command substitution parsing that caused the shell
|
|
to treat backslash-newline incorrectly when parsing a comment.
|
|
|
|
vv. Fixed bug that caused brace expansion sequence generation to misbehave
|
|
when supplied integers greater than 2**31 - 1.
|
|
|
|
ww. Fixed a bug that caused failure to save file descriptors for redirections
|
|
to corrupt shell file descriptors.
|
|
|
|
xx. Fixed a bug that caused bash-forward-shellword to not correctly handle
|
|
quoted strings.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug that caused the unconverted filename to be added to the list of
|
|
completions when the application specified filename conversion functions.
|
|
|
|
b. Fixed a bug that caused the wrong filename to be passed to opendir when the
|
|
application has specified a filename dequoting function.
|
|
|
|
c. Fixed a bug when repeating a character search in vi mode in the case where
|
|
there was no search to repeat.
|
|
|
|
d. When show-all-if-ambiguous is set, the completion routines no longer insert
|
|
a common match prefix that is shorter than the text being completed.
|
|
|
|
e. The full set of vi editing commands may now be used in callback mode.
|
|
|
|
f. Fixed a bug that caused readline to not update its idea of the terminal
|
|
dimensions while running in `no-echo' mode.
|
|
|
|
h. Fixed a bug that caused readline to dump core if an application called
|
|
rl_prep_terminal without setting rl_instream.
|
|
|
|
i. Fixed a bug that caused meta-prefixed characters bound to incremental
|
|
search forward or backward to not be recognized if they were typed
|
|
subsequently.
|
|
|
|
j. The incremental search code treats key sequences that map to the same
|
|
functions as (default) ^G, ^W, and ^Y as equivalent to those characters.
|
|
|
|
k. Fixed a bug in menu-complete that caused it to misbehave with large
|
|
negative argument.
|
|
|
|
l. Fixed a bug that caused vi-mode yank-last-arg to ring the bell when invoked
|
|
at the end of the line.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. `exec -a foo' now sets $0 to `foo' in an executable shell script without a
|
|
leading #!.
|
|
|
|
b. Subshells begun to execute command substitutions or run shell functions or
|
|
builtins in subshells do not reset trap strings until a new trap is
|
|
specified. This allows $(trap) to display the caller's traps and the
|
|
trap strings to persist until a new trap is set.
|
|
|
|
c. `trap -p' will now show signals ignored at shell startup, though their
|
|
disposition still cannot be modified.
|
|
|
|
d. $'...', echo, and printf understand \uXXXX and \UXXXXXXXX escape sequences.
|
|
|
|
e. declare/typeset has a new `-g' option, which creates variables in the
|
|
global scope even when run in a shell function.
|
|
|
|
f. test/[/[[ have a new -v variable unary operator, which returns success if
|
|
`variable' has been set.
|
|
|
|
g. Posix parsing changes to allow `! time command' and multiple consecutive
|
|
instances of `!' (which toggle) and `time' (which have no cumulative
|
|
effect).
|
|
|
|
h. Posix change to allow `time' as a command by itself to print the elapsed
|
|
user, system, and real times for the shell and its children.
|
|
|
|
j. $((...)) is always parsed as an arithmetic expansion first, instead of as
|
|
a potential nested command substitution, as Posix requires.
|
|
|
|
k. A new FUNCNEST variable to allow the user to control the maximum shell
|
|
function nesting (recursive execution) level.
|
|
|
|
l. The mapfile builtin now supplies a third argument to the callback command:
|
|
the line about to be assigned to the supplied array index.
|
|
|
|
m. The printf builtin has a new %(fmt)T specifier, which allows time values
|
|
to use strftime-like formatting.
|
|
|
|
n. There is a new `compat41' shell option.
|
|
|
|
o. The cd builtin has a new Posix-mandated `-e' option.
|
|
|
|
p. Negative subscripts to indexed arrays, previously errors, now are treated
|
|
as offsets from the maximum assigned index + 1.
|
|
|
|
q. Negative length specifications in the ${var:offset:length} expansion,
|
|
previously errors, are now treated as offsets from the end of the variable.
|
|
|
|
r. Parsing change to allow `time -p --'.
|
|
|
|
s. Posix-mode parsing change to not recognize `time' as a keyword if the
|
|
following token begins with a `-'. This means no more Posix-mode
|
|
`time -p'. Posix interpretation 267.
|
|
|
|
t. There is a new `lastpipe' shell option that runs the last command of a
|
|
pipeline in the current shell context. The lastpipe option has no
|
|
effect if job control is enabled.
|
|
|
|
u. History expansion no longer expands the `$!' variable expansion.
|
|
|
|
v. Posix mode shells no longer exit if a variable assignment error occurs
|
|
with an assignment preceding a command that is not a special builtin.
|
|
|
|
w. Non-interactive mode shells exit if -u is enabled and an attempt is made
|
|
to use an unset variable with the % or # expansions, the `//', `^', or
|
|
`,' expansions, or the parameter length expansion.
|
|
|
|
x. Posix-mode shells use the argument passed to `.' as-is if a $PATH search
|
|
fails, effectively searching the current directory. Posix-2008 change.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. The history library does not try to write the history filename in the
|
|
current directory if $HOME is unset. This closes a potential security
|
|
problem if the application does not specify a history filename.
|
|
|
|
b. New bindable variable `completion-display-width' to set the number of
|
|
columns used when displaying completions.
|
|
|
|
c. New bindable variable `completion-case-map' to cause case-insensitive
|
|
completion to treat `-' and `_' as identical.
|
|
|
|
d. There are new bindable vi-mode command names to avoid readline's case-
|
|
insensitive matching not allowing them to be bound separately.
|
|
|
|
e. New bindable variable `menu-complete-display-prefix' causes the menu
|
|
completion code to display the common prefix of the possible completions
|
|
before cycling through the list, instead of after.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.1-rc,
|
|
and the previous version, bash-4.1-beta.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that caused printf to not return a partial value when it
|
|
encountered an error while converting an integer argument.
|
|
|
|
b. Fixed a bug that caused setting one of the compatNN options to not
|
|
turn off the others.
|
|
|
|
c. The (undocumented) --wordexp option is no longer included by default.
|
|
|
|
d. Fixed a bug in conditional command execution that caused it to not
|
|
correctly ignore the exit status under certain circumstances.
|
|
|
|
e. Added a configure-time check for correctly-working asprintf/snprintf.
|
|
|
|
f. Fixed some problems with line number calculation and display when sourcing
|
|
a file in an interactive shell.
|
|
|
|
g. Fixed a bug that caused the shell to crash when using `declare -A foo=bar'.
|
|
|
|
h. Fixed a bug that caused an off-by-one error when calculating the directories
|
|
to display with the PROMPT_DIRTRIM option.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug that caused applications using the callback interface to not
|
|
react to SIGINT (or other signals) until another character arrived.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.1-beta,
|
|
and the previous version, bash-4.1-alpha.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug in mapfile that caused the shell to crash if it was passed the
|
|
name of an associative array.
|
|
|
|
b. Fixed a bug that caused the shell to incorrectly split case patterns if
|
|
they contained characters in $IFS.
|
|
|
|
c. Fixed a bug that caused the shell to set $? to the wrong value when using
|
|
a construct ending with a variable assignment with set -x enabled and PS4
|
|
containing a command substitution.
|
|
|
|
d. Fixed a bug that caused the shell to read commands incorrectly if an
|
|
expansion error occurred under certain conditions in a user-specified
|
|
subshell.
|
|
|
|
e. Fixed a bug that caused the shell to set $? incorrectly if a parse error
|
|
occurred in an evaluation context ("eval", trap command, dot script, etc.)
|
|
|
|
f. Fixed a bug that caused the shell to attempt command substitution
|
|
completion within a single-quoted string.
|
|
|
|
g. Fixed a bug that caused the shell to insert an extra single quote during
|
|
word completion.
|
|
|
|
h. Fixed a bug that caused the shell to crash if invoked with the environment
|
|
variable EMACS having a null value.
|
|
|
|
i. Fixed a bug that caused bash to incorrectly report the presence of new
|
|
mail in a `maildir' environment.
|
|
|
|
j. Fixed a bug that caused the shell to not recognize a here-document ending
|
|
delimiter inside a command substitution.
|
|
|
|
k. Fixed a bug that caused the shell to crash when a a dynamic array variable
|
|
was assigned a scalar value.
|
|
|
|
2. Changes to Readline
|
|
|
|
3. New Features in Bash
|
|
|
|
a. The mapfile/readarray builtin no longer stores the commands it invokes via
|
|
callbacks in the history list.
|
|
|
|
b. There is a new `compat40' shopt option.
|
|
|
|
c. The < and > operators to [[ do string comparisons using the current locale
|
|
only if the compatibility level is greater than 40 (set to 41 by default).
|
|
|
|
4. New Features in Readline
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.1-alpha,
|
|
and the previous version, bash-4.0-release.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed bugs in the parser involving new parsing of the commands contained
|
|
in command substitution when the substitution is read.
|
|
|
|
b. Fixed a bug that caused the shell to dump core when performing programmable
|
|
completion using a shell function.
|
|
|
|
c. Fixed a bug in `mapfile' that caused it to invoke callbacks at the wrong
|
|
time.
|
|
|
|
d. Fixed a bug that caused the shell to dump core when listing jobs in the
|
|
`exit' builtin.
|
|
|
|
e. Fixed several bugs encountered when reading subscripts in associative
|
|
array assignments and expansions.
|
|
|
|
f. Fixed a bug that under some circumstances caused an associative array to
|
|
be converted to an indexed array.
|
|
|
|
g. Fixed a bug that caused syntax errors and SIGINT interrupts to not set
|
|
$? to a value > 128.
|
|
|
|
h. Fixed a bug that caused the shell to remove FIFOs associated with process
|
|
substitution inside shell functions.
|
|
|
|
i. Fixed a bug that caused terminal attributes to not be reset when the
|
|
`read' builtin timed out.
|
|
|
|
j. Fixed a bug in brace expansion that caused unwanted zero padding of the
|
|
expanded terms.
|
|
|
|
k. Fixed a bug that prevented the |& construct from working as intended when
|
|
used with a simple command with additional redirections.
|
|
|
|
l. Fixed a bug with the case statment ;& terminator that caused the shell to
|
|
dereference a NULL pointer.
|
|
|
|
m. Fixed a bug that caused assignment statements or redirections preceding
|
|
a simple command name to inhibit alias expansion.
|
|
|
|
n. Fixed the behavior of `set -u' to conform to the latest Posix interpretation:
|
|
every expansion of an unset variable except $@ and $* will cause the
|
|
shell to exit.
|
|
|
|
o. Fixed a bug that caused double-quoted expansions of $* inside word
|
|
expansions like ${x#$*} to not expand properly when $IFS is empty.
|
|
|
|
p. Fixed a bug that caused traps to set $LINENO to the wrong value when they
|
|
execute.
|
|
|
|
q. Fixed a bug that caused off-by-one errors when computing history lines in
|
|
the `fc' builtin.
|
|
|
|
r. Fixed a bug that caused some terminating signals to not exit the shell
|
|
quickly enough, forcing the kernel to send the signal (e.g., SIGSEGV)
|
|
multiple times.
|
|
|
|
s. Fixed a bug that caused the shell to attempt to add empty lines to the
|
|
history list when reading here documents.
|
|
|
|
t. Made some internal changes that dramatically speeds up sequential indexed
|
|
array access.
|
|
|
|
u. Fixed a bug that caused the shell to write past the end of a string when
|
|
completing a double-quoted string ending in a backslash.
|
|
|
|
v. Fixed a bug that caused the shell to replace too many characters when a
|
|
pattern match was null in a ${foo//bar} expansion.
|
|
|
|
w. Fixed bugs in the expansion of ** that caused duplicate directory names
|
|
and the contents of the current directory to be omitted.
|
|
|
|
x. Fixed a bug that caused $? to not be set correctly when referencing an
|
|
unset variable with set -u and set -e enabled.
|
|
|
|
y. Fixed a bug caused by executing an external program from the DEBUG trap
|
|
while a pipeline was running. The effect was to disturb the pipeline
|
|
state, occasionally causing it to hang.
|
|
|
|
z. Fixed a bug that caused the ** glob expansion to dump core if it
|
|
encountered an unsearchable directory.
|
|
|
|
aa. Fixed a bug that caused `command -v' and `command -V' to not honor the
|
|
path set by the -p option.
|
|
|
|
bb. Fixed a bug that caused brace expansion to take place too soon in some
|
|
compound array assignments.
|
|
|
|
cc. Fixed a bug that caused programmable completion functions' changes to
|
|
READLINE_POINT to not be reflected back to readline.
|
|
|
|
dd. Fixed a bug that caused the shell to dump core if a trap was executed
|
|
during a shell assignment statement.
|
|
|
|
ee. Fixed an off-by-one error when computing the number of positional
|
|
parameters for the ${@:0:n} expansion.
|
|
|
|
ff. Fixed a problem with setting COMP_CWORD for programmable completion
|
|
functions that could leave it set to -1.
|
|
|
|
gg. Fixed a bug that caused the ERR trap to be triggered in some cases where
|
|
`set -e' would not have caused the shell to exit.
|
|
|
|
hh. Fixed a bug that caused changes made by `compopt' to not persist past the
|
|
completion function in which compopt was executed.
|
|
|
|
ii. Fixed a bug that caused the list of hostname completions to not be cleared
|
|
when HOSTNAME was unset.
|
|
|
|
jj. Fixed a bug that caused variable expansion in here documents to look in
|
|
any temporary environment.
|
|
|
|
kk. Bash and readline can now convert file names between precomposed and
|
|
decomposed Unicode on Mac OS X ("keyboard" and file system forms,
|
|
respectively). This affects filename completion (using new
|
|
rl_filename_rewrite_hook), globbing, and readline redisplay.
|
|
|
|
ll. The ERR and EXIT traps now see a non-zero value for $? when a parser
|
|
error after set -e has been enabled causes the shell to exit.
|
|
|
|
mm. Fixed a bug that in brace expansion that caused zero-prefixed terms to
|
|
not contain the correct number of digits.
|
|
|
|
nn. Fixed a bug that caused the shell to free non-allocated memory when
|
|
unsetting an associative array which had had a value implicitly assigned
|
|
to index "0".
|
|
|
|
oo. Fixed a memory leak in the ${!prefix@} expansion.
|
|
|
|
pp. Fixed a bug that caused printf to not correctly report all write errors.
|
|
|
|
qq. Fixed a bug that caused single and double quotes to act as delimiters
|
|
when splitting a command line into words for programmable completion.
|
|
|
|
rr. Fixed a bug that caused ** globbing that caused **/path/* to match every
|
|
directory, not just those matching `path'.
|
|
|
|
ss. Fixed a bug that caused the shell to dump core when running `help' without
|
|
arguments if the terminal width was fewer than 7 characters.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. The SIGWINCH signal handler now avoids calling the redisplay code if
|
|
one arrives while in the middle of redisplay.
|
|
|
|
b. Changes to the timeout code to make sure that timeout values greater
|
|
than one second are handled better.
|
|
|
|
c. Fixed a bug in the redisplay code that was triggered by a prompt
|
|
containing invisible characters exactly the width of the screen.
|
|
|
|
d. Fixed a bug in the redisplay code encountered when running in horizontal
|
|
scroll mode.
|
|
|
|
e. Fixed a bug that prevented menu completion from properly completing
|
|
filenames.
|
|
|
|
f. Fixed a redisplay bug caused by a multibyte character causing a line to
|
|
wrap.
|
|
|
|
g. Fixed a bug that caused key sequences of two characters to not be
|
|
recognized when a longer sequence identical in the first two characters
|
|
was bound.
|
|
|
|
h. Fixed a bug that caused history expansion to be attempted on $'...'
|
|
single-quoted strings.
|
|
|
|
i. Fixed a bug that caused incorrect redisplay when the prompt contained
|
|
multibyte characters in an `invisible' sequence bracketed by \[ and
|
|
\].
|
|
|
|
j. Fixed a bug that caused history expansion to short-circuit after
|
|
encountering a multibyte character.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. Here-documents within $(...) command substitutions may once more be
|
|
delimited by the closing right paren, instead of requiring a newline.
|
|
|
|
b. Bash's file status checks (executable, readable, etc.) now take file
|
|
system ACLs into account on file systems that support them.
|
|
|
|
c. Bash now passes environment variables with names that are not valid
|
|
shell variable names through into the environment passed to child
|
|
processes.
|
|
|
|
d. The `execute-unix-command' readline function now attempts to clear and
|
|
reuse the current line rather than move to a new one after the command
|
|
executes.
|
|
|
|
e. `printf -v' can now assign values to array indices.
|
|
|
|
f. New `complete -E' and `compopt -E' options that work on the "empty"
|
|
completion: completion attempted on an empty command line.
|
|
|
|
g. New complete/compgen/compopt -D option to define a `default' completion:
|
|
a completion to be invoked on command for which no completion has been
|
|
defined. If this function returns 124, programmable completion is
|
|
attempted again, allowing a user to dynamically build a set of completions
|
|
as completion is attempted by having the default completion function
|
|
install individual completion functions each time it is invoked.
|
|
|
|
h. When displaying associative arrays, subscripts are now quoted.
|
|
|
|
i. Changes to dabbrev-expand to make it more `emacs-like': no space appended
|
|
after matches, completions are not sorted, and most recent history entries
|
|
are presented first.
|
|
|
|
j. The [[ and (( commands are now subject to the setting of `set -e' and the
|
|
ERR trap.
|
|
|
|
k. The source/. builtin now removes NUL bytes from the file before attempting
|
|
to parse commands.
|
|
|
|
l. There is a new configuration option (in config-top.h) that forces bash to
|
|
forward all history entries to syslog.
|
|
|
|
m. A new variable $BASHOPTS to export shell options settable using `shopt' to
|
|
child processes.
|
|
|
|
n. There is a new confgure option that forces the extglob option to be
|
|
enabled by default.
|
|
|
|
o. New variable $BASH_XTRACEFD; when set to an integer bash will write xtrace
|
|
output to that file descriptor.
|
|
|
|
p. If the optional left-hand-side of a redirection is of the form {var}, the
|
|
shell assigns the file descriptor used to $var or uses $var as the file
|
|
descriptor to move or close, depending on the redirection operator.
|
|
|
|
q. The < and > operators to the [[ conditional command now do string
|
|
comparison according to the current locale.
|
|
|
|
r. Programmable completion now uses the completion for `b' instead of `a'
|
|
when completion is attempted on a line like: a $(b c.
|
|
|
|
s. Force extglob on temporarily when parsing the pattern argument to
|
|
the == and != operators to the [[ command, for compatibility.
|
|
|
|
t. Changed the behavior of interrupting the wait builtin when a SIGCHLD is
|
|
received and a trap on SIGCHLD is set to be Posix-mode only.
|
|
|
|
u. The read builtin has a new `-N nchars' option, which reads exactly NCHARS
|
|
characters, ignoring delimiters like newline.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. New bindable function: menu-complete-backward.
|
|
|
|
b. In the vi insertion keymap, C-n is now bound to menu-complete by default,
|
|
and C-p to menu-complete-backward.
|
|
|
|
c. When in vi command mode, repeatedly hitting ESC now does nothing, even
|
|
when ESC introduces a bound key sequence. This is closer to how
|
|
historical vi behaves.
|
|
|
|
d. New bindable function: skip-csi-sequence. Can be used as a default to
|
|
consume key sequences generated by keys like Home and End without having
|
|
to bind all keys.
|
|
|
|
e. New application-settable function: rl_filename_rewrite_hook. Can be used
|
|
to rewite or modify filenames read from the file system before they are
|
|
compared to the word to be completed.
|
|
|
|
f. New bindable variable: skip-completed-text, active when completing in the
|
|
middle of a word. If enabled, it means that characters in the completion
|
|
that match characters in the remainder of the word are "skipped" rather
|
|
than inserted into the line.
|
|
|
|
g. The pre-readline-6.0 version of menu completion is available as
|
|
"old-menu-complete" for users who do not like the readline-6.0 version.
|
|
|
|
h. New bindable variable: echo-control-characters. If enabled, and the
|
|
tty ECHOCTL bit is set, controls the echoing of characters corresponding
|
|
to keyboard-generated signals.
|
|
|
|
i. New bindable variable: enable-meta-key. Controls whether or not readline
|
|
sends the smm/rmm sequences if the terminal indicates it has a meta key
|
|
that enables eight-bit characters.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.0-release,
|
|
and the previous version, bash-4.0-rc1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Changed the message printed when setlocale(3) fails to only include the
|
|
strerror error text if the call changes errno.
|
|
|
|
b. Changed trap command execution to reset the line number before running a
|
|
trap (except DEBUG and RETURN traps).
|
|
|
|
c. Fixed behavior of case-modifiying word expansions to not work on
|
|
individual words within a variable's value.
|
|
|
|
d. Fixed a bug that caused mapfile to not be interruptible when run in an
|
|
interactive shell.
|
|
|
|
e. Fixed a bug that caused mapfile to not run callbacks for the first line
|
|
read.
|
|
|
|
f. Fixed a bug that caused mapfile to not honor EOF typed in an interactive
|
|
shell.
|
|
|
|
g. Fixed the coprocess reaping code to not run straight from a signal handler.
|
|
|
|
h. Fixed a bug that caused printf -b to ignore the first % conversion specifier
|
|
in the format string on 64-bit systems.
|
|
|
|
i. Fixed a bug that caused incorrect word splitting when `:', `=', or `~'
|
|
appeared in $IFS.
|
|
|
|
j. Fixed a bug that caused data corruption in the programmable completion code
|
|
when a shell function called from a completion aborted execution.
|
|
|
|
k. Fixed a bug that caused the CPU usage reported by the `time' builtin to be
|
|
capped at 100%.
|
|
|
|
l. Changed behavior of shell when -e option is in effect to reflect consensus
|
|
of Posix shell standardization working group.
|
|
|
|
m. Fixed a bug introduced in bash-4.0-alpha that caused redirections to not
|
|
be displayed by `type' or `declare' when appearing in functions under
|
|
certain circumstances.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug that caused !(...) extended glob patterns to inhibit later
|
|
history expansion.
|
|
|
|
b. Reworked the signal handling to avoid calling disallowed functions from a
|
|
signal handler.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. `readarray' is now a synonym for `mapfile'.
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.0-rc1,
|
|
and the previous version, bash-4.0-beta2.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that caused parsing errors when a $()-style command
|
|
substitution was follwed immediately by a quoted newline.
|
|
|
|
b. Fixed a bug that caused extended shell globbing patterns beginning with
|
|
`*(' to not work when used with pattern substitution word expansions.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.0-beta2,
|
|
and the previous version, bash-4.0-beta.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that caused failed word expansions to set $? but not
|
|
PIPESTATUS.
|
|
|
|
b. Changed filename completion to quote the tilde in a filename with a
|
|
leading tilde that exists in the current directory.
|
|
|
|
c. Fixed a bug that caused a file descriptor leak when performing
|
|
redirections attached to a compound command.
|
|
|
|
d. Fixed a bug that caused expansions of $@ and $* to not exit the shell if
|
|
the -u option was enabled and there were no posititional parameters.
|
|
|
|
e. Fixed a bug that resulted in bash not terminating immediately if a
|
|
terminating signal was received while performing output.
|
|
|
|
f. Fixed a bug that caused the shell to crash after creating 256 process
|
|
substitutions during word completion.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug that caused redisplay errors when using prompts with invisible
|
|
characters and numeric arguments to a command in a multibyte locale.
|
|
|
|
b. Fixed a bug that caused redisplay errors when using prompts with invisible
|
|
characters spanning more than two physical screen lines.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.0-beta,
|
|
and the previous version, bash-4.0-alpha.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a typo that caused a variable to be used before initialization
|
|
while parsing Posix-style command substitutions.
|
|
|
|
b. Fixed a bug that caused stray ^? when the expansion of a parameter used
|
|
as part of a pattern removal expansion is empty, but part of a non-
|
|
empty string.
|
|
|
|
c. Fixed a bug that could cause strings not converted to numbers by strtol
|
|
to be treated as if the conversion had been successful.
|
|
|
|
d. The `return' builtin now accepts no options and requires a `--' before
|
|
a negative return value, as Posix requires.
|
|
|
|
e. Fixed a bug that caused local variables to be created with the empty
|
|
string for a value rather than no value.
|
|
|
|
f. Changed behavior so the shell now acts as if it received an interrupt
|
|
when a pipeline is killed by SIGINT while executing a list.
|
|
|
|
g. Fixed a bug that caused `declare var' and `typeset var' to initialize
|
|
`var' to the empty string.
|
|
|
|
h. Changed `bind' builtin to print a warning but proceed if invoked when
|
|
line editing is not active.
|
|
|
|
i. Fixed a bug that caused the shell to exit when the `errexit' option is
|
|
set and a command in a pipeline returns a non-zero exit status.
|
|
|
|
j. Fixed a bug that caused the shell to not run the exit trap in a command
|
|
run with `bash -c' under some circumstances.
|
|
|
|
k. Fixed a bug that caused parser errors to occasionally not set $? when
|
|
running commands with `eval'.
|
|
|
|
l. Fixed a bug that caused stray control characters when evaluating compound
|
|
array assignments containing $'\x7f' escapes.
|
|
|
|
m. Fixed a bug that caused redirections involving file descriptor 10 as the
|
|
target to behave incorrectly.
|
|
|
|
n. Fixed a bug that could cause memory to be freed multiple times when
|
|
assigning to COMP_WORDBREAKS.
|
|
|
|
o. Fixed a bug that could cause NULL pointer dereferences when COMP_WORDBREAKS
|
|
was unset.
|
|
|
|
2. Changes to Readline
|
|
|
|
3. New Features in Bash
|
|
|
|
a. A value of 0 for the -t option to `read' now returns success if there is
|
|
input available to be read from the specified file descriptor.
|
|
|
|
b. CDPATH and GLOBIGNORE are ignored when the shell is running in privileged
|
|
mode.
|
|
|
|
c. New bindable readline functions shell-forward-word and shell-backward-word,
|
|
which move forward and backward words delimited by shell metacharacters
|
|
and honor shell quoting.
|
|
|
|
d. New bindable readline functions shell-backward-kill-word and shell-kill-word
|
|
which kill words backward and forward, but use the same word boundaries
|
|
as shell-forward-word and shell-backward-word.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. If the kernel supports it, readline displays special characters
|
|
corresponding to a keyboard-generated signal when the signal is received.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-4.0-alpha,
|
|
and the previous version, bash-3.2-release.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed several bugs in old-style `` command substitution parsing, including
|
|
comment parsing and quoted string handling.
|
|
|
|
b. Fixed problems parsing arguments to the [[ command's =~ regular expression
|
|
matching operator: metacharacter and whitespace parsing.
|
|
|
|
c. Fixed a bug that caused the shell to inappropriately reuse high-numbered
|
|
file descriptors it used internally.
|
|
|
|
d. Fixed a bug in pattern replacement word expansions that caused a `/' as
|
|
the first character of an expanded pattern to be mistaken for a global
|
|
replacement specifier.
|
|
|
|
e. Fixed several problems with the asprintf and snprintf replacement functions
|
|
that caused hangs and crashes.
|
|
|
|
f. Fixed a bug in the calculation of the current and previous job that caused
|
|
it to refer to incorrect jobs.
|
|
|
|
g. Fixed a bug in the check for the validity of a hashed command pathname that
|
|
caused unnecessary hash table deletions and additions.
|
|
|
|
h. Fixed a bug that caused child processes to inherit the wrong value for $!.
|
|
|
|
i. Fixed a bug that caused `.' to fail to read and execute commands from non-
|
|
regular files such as devices or named pipes.
|
|
|
|
j. Fixed a bug in printf formatting for the %x and %X expansions that occurred
|
|
on some systems.
|
|
|
|
k. Fixed a bug that caused the shell to crash when creating temporary files if
|
|
$TMPDIR named a non-writable directory.
|
|
|
|
l. Fixed a bug that caused the shell to ignore $TMPDIR when creating temporary
|
|
files under some circumstances.
|
|
|
|
m. Fixed a bug that caused named pipes created by process substitution to not
|
|
be cleaned up.
|
|
|
|
n. Fixed a bug that caused HISTTIMEFORMAT to not be honored when it appeared
|
|
in the initial shell environment.
|
|
|
|
o. Fixed several bugs in the expansion of $* and $@ (quoted and unquoted)
|
|
when IFS is null or contains non-whitespace characters; the same changes
|
|
apply to arrays subscripted with * or @.
|
|
|
|
p. Fixed several problems with pattern substitution expansions on the
|
|
positional parameters and arrays subscripted with * or @ that occurred
|
|
when $IFS was set to the empty string.
|
|
|
|
q. Made a change to the default locale initialization code that should
|
|
result in better behavior from the locale-aware library functions.
|
|
|
|
r. Fixed a bug that caused compacting the jobs list to drop jobs.
|
|
|
|
s. Fixed a bug that caused jumps back to the top-level processing loop from
|
|
a builtin command to leave the shell in an inconsistent state.
|
|
|
|
t. Fixed a bug that caused characters that would be escaped internally to be
|
|
doubled when escaped with a backslash.
|
|
|
|
u. Fixed the initialization of mailboxes to not cause maildirs to be read
|
|
(and stat(2) called for every message file) at shell startup.
|
|
|
|
v. Fixed a bug that caused the shell to not display $PS2 when the read builtin
|
|
reads a line continued with a backslash.
|
|
|
|
w. Fixed a bug that caused errors in word splitting when $IFS contained
|
|
characters used for internal quoting.
|
|
|
|
x. Fixed bugs that caused problems with output from shell builtins not being
|
|
completely displayed on some systems.
|
|
|
|
y. Fixed a bug that caused output to be lost when a redirection is acting on
|
|
the shell's output file descriptor.
|
|
|
|
z. Fixed bugs caused by shell builtins not checking for all write errors.
|
|
|
|
aa. Fixed a problem that caused the shell to dump core if expansions on the
|
|
pattern passed to the pattern removal word expansions resulted in expansion
|
|
errors.
|
|
|
|
bb. Fixed a bug that caused bash to loop infinitely after creating and
|
|
waiting for 4096 jobs.
|
|
|
|
cc. Fixed a bug that caused bash to lose the status of a background job under
|
|
certain circumstances.
|
|
|
|
dd. Fixed a bug that caused bash to not look in the temporary environment
|
|
when performing variable lookup under certain circumstances.
|
|
|
|
ee. Fixed a bug that caused bash to close file descriptors greater than 10
|
|
when they were used in redirections.
|
|
|
|
ff. Fixed a problem that caused the shell to attempt to read from the standard
|
|
input when called as `bash -i script'.
|
|
|
|
gg. Fixed a memory leak and variable initialization problems when the -v option
|
|
was supplied to `printf' that could cause incorrect results.
|
|
|
|
hh. Fixed a bug that caused the `read' builtin to count bytes when the -n option
|
|
was supplied, rather than (possibly multibyte) characters.
|
|
|
|
ii. Fixed a bug when displaying a function due to not converting the function
|
|
to an external form.
|
|
|
|
jj. Changed job control initialization to ensure that the shell has a tty
|
|
as its controlling terminal before enabling job control.
|
|
|
|
kk. Fixed a bug with the `test' builtin that caused it to misinterpret
|
|
arguments beginning with `-' but containing more than one character.
|
|
|
|
ll. Fixed bug that could cause the shell to dump core in certain cases where
|
|
a command sets the SIGINT disposition to the default.
|
|
|
|
mm. Fixed a bug in the pattern replacement (affecting both word expansion
|
|
and the `fc' builtin) that occurred when the pattern and replacement
|
|
strings were empty.
|
|
|
|
nn. Fixed a bug that caused an arithmetic evaluation error to disable all
|
|
further evaluation.
|
|
|
|
oo. Fixed a bug in pathname expansion that caused it to interpret backslashes
|
|
in the pathname as quoting characters.
|
|
|
|
pp. Fixed a bug in the replacement getcwd() implementation that could cause
|
|
memory to be overwritten.
|
|
|
|
qq. When in Posix mode, the `ulimit' builtin now uses a block size of 512 for
|
|
the `-c' and `-f' options.
|
|
|
|
rr. Brace expansion now allows process substitutions to pass through unchanged.
|
|
|
|
ss. Fixed a problem in the command name completion code to avoid quoting
|
|
escaped special characters twice when the command name begins with a tilde.
|
|
|
|
tt. Fixed a problem in the printf builtin that resulted in single-byte
|
|
output for the "'" escape, even when using multibyte characters.
|
|
|
|
uu. Fixed a bug that caused the failure exit status to be lost when redirections
|
|
attached to a compound command failed.
|
|
|
|
vv. Fixed a bug that caused the internal random number generator to not be
|
|
re-seeded correctly when creating a subshell.
|
|
|
|
ww. Fixed a bug that could cause the bash replacement getcwd to overwrite
|
|
memory.
|
|
|
|
xx. Fixed a bug that caused the shell to not receive SIGINT if it was sent
|
|
while the shell was waiting for a command substitution to terminate, and
|
|
make sure the exit status is correct when it does.
|
|
|
|
yy. Fixed a bug that resulted in the second and subsequent children spawned
|
|
by a shell begun to run a command substitution being placed into the
|
|
wrong process group.
|
|
|
|
zz. Fixed a bug that caused the results of successful tilde expansion to be
|
|
subject to pathname expansion and word splitting.
|
|
|
|
aaa. Fixed a bug that could cause the shell to hang if it encountered an
|
|
error that caused it to jump back to the top processing loop during a
|
|
command substitution or `eval' command.
|
|
|
|
bbb. Fixed a bug that caused the `read' builtin to use the tty's attributes
|
|
instead of those of the file descriptor passed with the -u option when
|
|
processing the -n and -d options.
|
|
|
|
ccc. Fixed a bug that caused incorrect expansion of ${array[@]:foo} if the
|
|
first character of $IFS was not whitespace.
|
|
|
|
ddd. Fixed a bug that occurred when scanning for the ending delimiter of a
|
|
${parameter/pat/sub} expansion.
|
|
|
|
eee. Fixed a bug that caused the shell to inappropriately expand command
|
|
substitutions in words when expanding directory names for completion.
|
|
|
|
fff. Fixed a bug that caused the `fc' builtin to look too far back in the
|
|
history list under certain circumstances.
|
|
|
|
ggg. Fixed a bug that caused a shell running in Posix mode to search $PWD for
|
|
a file specified as an argument to source/. when the file was not found
|
|
in $PATH.
|
|
|
|
hhh. Fixed a bug that caused the shell to modify the case of a command word
|
|
found via command completion when the shell was performing case-
|
|
insensitive completion.
|
|
|
|
iii. Fixed a bug that caused the shell to search $PATH for an argument to
|
|
source/. even when it contained a `/'.
|
|
|
|
jjj. Fixed a bug that caused brace expansion to misorder expansions when the
|
|
locale did not have a collating order like aAbBcC...zZ.
|
|
|
|
kkk. Fixed a bug that did not allow `set +o history' to have any effect when
|
|
run in a startup file or from a sourced file.
|
|
|
|
lll. Fixed a bug with the precedence of the ?: conditional arithmetic operator.
|
|
|
|
mmm. Fixed a bug that caused side effects of temporary variable assignments
|
|
to persist in the shell environment.
|
|
|
|
nnn. Fixed a bug that caused the terminal to be left in non-canonical mode
|
|
when using editing commands that invoke the an editor on the current
|
|
command line.
|
|
|
|
ooo. Fixed a bug that caused globbing characters and characters in $IFS to not
|
|
be quoted appropriately when displaying assignment statements.
|
|
|
|
ppp. Fixed a bug that caused the `-e' option to be inherited when sourcing a
|
|
file or evaluating a command with `eval' even if the return value of the
|
|
command was supposed to be ignored.
|
|
|
|
qqq. Fixed a bug that caused the shell to attempt to created variables with
|
|
invalid names if such names appeared in the initial environment.
|
|
|
|
rrr. Fixed a bug with quote removal in strings where the final character is a
|
|
backslash.
|
|
|
|
sss. Fixed a bug that caused the effects of special variables to persist even
|
|
when the variables were unset as part of the shell reinitializing itself
|
|
to execute a shell script.
|
|
|
|
ttt. Fixed a bug that caused the history to not be saved after `history -c' or
|
|
`history -d' was executed until a sufficient number of commands had been
|
|
saved to the history.
|
|
|
|
uuu. Bash now parses command substitutions according to Posix rules: parsing
|
|
the command contained in $() to find the closing delimiter.
|
|
|
|
vvv. Fixed a bug that caused traps on SIGCHLD set in a SIGCHLD handler to
|
|
not persist.
|
|
|
|
www. Fixed a bug that didn't allow SIGCHLD to interrupt the `wait' builtin
|
|
as Posix specifies.
|
|
|
|
xxx. Invalid numeric arguments to shell builtins no longer cause the shell to
|
|
short-circuit any executing compound command.
|
|
|
|
yyy. Fixed a bug that caused the exit status to be lost when `break' was
|
|
used to short-circuit a loop's execution.
|
|
|
|
zzz. Fixed a bug that caused stray ^? characters to be left in expansions of
|
|
"${array[*]}".
|
|
|
|
aaaa. Bash now prints better error messages for here documents terminated by
|
|
EOF and for identifying the incorrect token in an invalid arithmetic
|
|
expression.
|
|
|
|
bbbb. Fixed a bug in the variable length word expansion that caused it to
|
|
incorrectly calculate the number of multibyte characters.
|
|
|
|
cccc. Fixed a race condition that could result in the top-level shell setting
|
|
the terminal's process group to an incorrect value if the process
|
|
group was changed by a child of a child of the shell.
|
|
|
|
dddd. Fixed a bug that caused here documents belonging to commands within a
|
|
compound command to be displayed in a syntactially-incorrect form, which
|
|
prevented them from being re-read as input.
|
|
|
|
eeee. The shell displays more warnings about failures to set the locale.
|
|
|
|
ffff. Fixed a bug that caused the body of a here-document to not be saved to
|
|
the history list.
|
|
|
|
gggg. Fixed a bug that caused configure to incorrectly conclude that FreeBSD
|
|
had /dev/fd available, resulting in problems with process substitution.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a number of redisplay errors in environments supporting multibyte
|
|
characters.
|
|
|
|
b. Fixed bugs in vi command mode that caused motion commands to inappropriately
|
|
set the mark.
|
|
|
|
c. When using the arrow keys in vi insertion mode, readline allows movement
|
|
beyond the current end of the line (unlike command mode).
|
|
|
|
d. Fixed bugs that caused readline to loop when the terminal has been taken
|
|
away and reads return -1/EIO.
|
|
|
|
e. Fixed bugs in redisplay occurring when displaying prompts containing
|
|
invisible characters.
|
|
|
|
f. Fixed a bug that caused the completion append character to not be reset to
|
|
the default after an application-specified completion function changed it.
|
|
|
|
g. Fixed a problem that caused incorrect positioning of the cursor while in
|
|
emacs editing mode when moving forward at the end of a line while using
|
|
a locale supporting multibyte characters.
|
|
|
|
h. Fixed an off-by-one error that caused readline to drop every 511th
|
|
character of buffered input.
|
|
|
|
i. Fixed a bug that resulted in SIGTERM not being caught or cleaned up.
|
|
|
|
j. Fixed redisplay bugs caused by multiline prompts with invisible characters
|
|
or no characters following the final newline.
|
|
|
|
k. Fixed redisplay bug caused by prompts consisting solely of invisible
|
|
characters.
|
|
|
|
l. Fixed a bug in the code that buffers characters received very quickly in
|
|
succession which caused characters to be dropped.
|
|
|
|
m. Fixed a bug that caused readline to reference uninitialized data structures
|
|
if it received a SIGWINCH before completing initialzation.
|
|
|
|
n. Fixed a bug that caused the vi-mode `last command' to be set incorrectly
|
|
and therefore unrepeatable.
|
|
|
|
o. Fixed a bug that caused readline to disable echoing when it was being used
|
|
with an output file descriptor that was not a terminal.
|
|
|
|
p. Readline now blocks SIGINT while manipulating internal data structures
|
|
during redisplay.
|
|
|
|
q. Fixed a bug in redisplay that caused readline to segfault when pasting a
|
|
very long line (over 130,000 characters).
|
|
|
|
r. Fixed bugs in redisplay when using prompts with no visible printing
|
|
characters.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. When using substring expansion on the positional parameters, a starting
|
|
index of 0 now causes $0 to be prefixed to the list.
|
|
|
|
b. The `help' builtin now prints its columns with entries sorted vertically
|
|
rather than horizontally.
|
|
|
|
c. There is a new variable, $BASHPID, which always returns the process id of
|
|
the current shell.
|
|
|
|
d. There is a new `autocd' option that, when enabled, causes bash to attempt
|
|
to `cd' to a directory name that is supplied as the first word of a
|
|
simple command.
|
|
|
|
e. There is a new `checkjobs' option that causes the shell to check for and
|
|
report any running or stopped jobs at exit.
|
|
|
|
f. The programmable completion code exports a new COMP_TYPE variable, set to
|
|
a character describing the type of completion being attempted.
|
|
|
|
g. The programmable completion code exports a new COMP_KEY variable, set to
|
|
the character that caused the completion to be invoked (e.g., TAB).
|
|
|
|
h. If creation of a child process fails due to insufficient resources, bash
|
|
will try again several times before reporting failure.
|
|
|
|
i. The programmable completion code now uses the same set of characters as
|
|
readline when breaking the command line into a list of words.
|
|
|
|
j. The block multiplier for the ulimit -c and -f options is now 512 when in
|
|
Posix mode, as Posix specifies.
|
|
|
|
k. Changed the behavior of the read builtin to save any partial input received
|
|
in the specified variable when the read builtin times out. This also
|
|
results in variables specified as arguments to read to be set to the empty
|
|
string when there is no input available. When the read builtin times out,
|
|
it returns an exit status greater than 128.
|
|
|
|
l. The shell now has the notion of a `compatibility level', controlled by
|
|
new variables settable by `shopt'. Setting this variable currently
|
|
restores the bash-3.1 behavior when processing quoted strings on the rhs
|
|
of the `=~' operator to the `[[' command.
|
|
|
|
m. The `ulimit' builtin now has new -b (socket buffer size) and -T (number
|
|
of threads) options.
|
|
|
|
n. The -p option to `declare' now displays all variable values and attributes
|
|
(or function values and attributes if used with -f).
|
|
|
|
o. There is a new `compopt' builtin that allows completion functions to modify
|
|
completion options for existing completions or the completion currently
|
|
being executed.
|
|
|
|
p. The `read' builtin has a new -i option which inserts text into the reply
|
|
buffer when using readline.
|
|
|
|
q. A new `-E' option to the complete builtin allows control of the default
|
|
behavior for completion on an empty line.
|
|
|
|
r. There is now limited support for completing command name words containing
|
|
globbing characters.
|
|
|
|
s. Changed format of internal help documentation for all builtins to roughly
|
|
follow man page format.
|
|
|
|
t. The `help' builtin now has a new -d option, to display a short description,
|
|
and a -m option, to print help information in a man page-like format.
|
|
|
|
u. There is a new `mapfile' builtin to populate an array with lines from a
|
|
given file.
|
|
|
|
v. If a command is not found, the shell attempts to execute a shell function
|
|
named `command_not_found_handle', supplying the command words as the
|
|
function arguments.
|
|
|
|
w. There is a new shell option: `globstar'. When enabled, the globbing code
|
|
treats `**' specially -- it matches all directories (and files within
|
|
them, when appropriate) recursively.
|
|
|
|
x. There is a new shell option: `dirspell'. When enabled, the filename
|
|
completion code performs spelling correction on directory names during
|
|
completion.
|
|
|
|
y. The `-t' option to the `read' builtin now supports fractional timeout
|
|
values.
|
|
|
|
z. Brace expansion now allows zero-padding of expanded numeric values and
|
|
will add the proper number of zeroes to make sure all values contain the
|
|
same number of digits.
|
|
|
|
aa. There is a new bash-specific bindable readline function: `dabbrev-expand'.
|
|
It uses menu completion on a set of words taken from the history list.
|
|
|
|
bb. The command assigned to a key sequence with `bind -x' now sets two new
|
|
variables in the environment of the executed command: READLINE_LINE_BUFFER
|
|
and READLINE_POINT. The command can change the current readline line
|
|
and cursor position by modifying READLINE_LINE_BUFFER and READLINE_POINT,
|
|
respectively.
|
|
|
|
cc. There is a new &>> redirection operator, which appends the standard output
|
|
and standard error to the named file.
|
|
|
|
dd. The parser now understands `|&' as a synonym for `2>&1 |', which redirects
|
|
the standard error for a command through a pipe.
|
|
|
|
ee. The new `;&' case statement action list terminator causes execution to
|
|
continue with the action associated with the next pattern in the
|
|
statement rather than terminating the command.
|
|
|
|
ff. The new `;;&' case statement action list terminator causes the shell to
|
|
test the next set of patterns after completing execution of the current
|
|
action, rather than terminating the command.
|
|
|
|
gg. The shell understands a new variable: PROMPT_DIRTRIM. When set to an
|
|
integer value greater than zero, prompt expansion of \w and \W will
|
|
retain only that number of trailing pathname components and replace
|
|
the intervening characters with `...'.
|
|
|
|
hh. There are new case-modifying word expansions: uppercase (^[^]) and
|
|
lowercase (,[,]). They can work on either the first character or
|
|
array element, or globally. They accept an optional shell pattern
|
|
that determines which characters to modify. There is an optionally-
|
|
configured feature to include capitalization operators.
|
|
|
|
ii. The shell provides associative array variables, with the appropriate
|
|
support to create, delete, assign values to, and expand them.
|
|
|
|
jj. The `declare' builtin now has new -l (convert value to lowercase upon
|
|
assignment) and -u (convert value to uppercase upon assignment) options.
|
|
There is an optionally-configurable -c option to capitalize a value at
|
|
assignment.
|
|
|
|
kk. There is a new `coproc' reserved word that specifies a coprocess: an
|
|
asynchronous command run with two pipes connected to the creating shell.
|
|
Coprocs can be named. The input and output file descriptors and the
|
|
PID of the coprocess are available to the calling shell in variables
|
|
with coproc-specific names.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. A new variable, rl_sort_completion_matches; allows applications to inhibit
|
|
match list sorting (but beware: some things don't work right if
|
|
applications do this).
|
|
|
|
b. A new variable, rl_completion_invoking_key; allows applications to discover
|
|
the key that invoked rl_complete or rl_menu_complete.
|
|
|
|
c. The functions rl_block_sigint and rl_release_sigint are now public and
|
|
available to calling applications who want to protect critical sections
|
|
(like redisplay).
|
|
|
|
d. The functions rl_save_state and rl_restore_state are now public and
|
|
available to calling applications; documented rest of readline's state
|
|
flag values.
|
|
|
|
e. A new user-settable variable, `history-size', allows setting the maximum
|
|
number of entries in the history list.
|
|
|
|
f. There is a new implementation of menu completion, with several improvements
|
|
over the old; the most notable improvement is a better `completions
|
|
browsing' mode.
|
|
|
|
g. The menu completion code now uses the rl_menu_completion_entry_function
|
|
variable, allowing applications to provide their own menu completion
|
|
generators.
|
|
|
|
h. There is support for replacing a prefix of a pathname with a `...' when
|
|
displaying possible completions. This is controllable by setting the
|
|
`completion-prefix-display-length' variable. Matches with a common prefix
|
|
longer than this value have the common prefix replaced with `...'.
|
|
|
|
i. There is a new `revert-all-at-newline' variable. If enabled, readline will
|
|
undo all outstanding changes to all history lines when `accept-line' is
|
|
executed.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.2-release,
|
|
and the previous version, bash-3.2-beta.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that caused the temporary environment passed to a command to
|
|
affect the shell's environment under certain circumstances.
|
|
|
|
b. Fixed a bug in the printf builtin that caused the %q format specifier to
|
|
ignore empty string arguments.
|
|
|
|
c. Improved multibyte character environment detection at configuration time.
|
|
|
|
d. Fixed a bug in the read builtin that left spurious escape characters in the
|
|
input after processing backslashes when assigning to an array variable.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a redisplay bug that occurred in multibyte-capable locales when the
|
|
prompt was one character longer than the screen width.
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.2-beta,
|
|
and the previous version, bash-3.2-alpha.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Changed the lexical analyzer to treat locale-specific blank characters as
|
|
white space.
|
|
|
|
b. Fixed a bug in command printing to avoid confusion between redirections and
|
|
process substitution.
|
|
|
|
c. Fixed problems with cross-compiling originating from inherited environment
|
|
variables.
|
|
|
|
d. Added write error reporting to printf builtin.
|
|
|
|
e. Fixed a bug in the variable expansion code that could cause a core dump in
|
|
a multi-byte locale.
|
|
|
|
f. Fixed a bug that caused substring expansion of a null string to return
|
|
incorrect results.
|
|
|
|
g. BASH_COMMAND now retains its previous value while executing commands as the
|
|
result of a trap, as the documentation states.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug with prompt redisplay in a multi-byte locale to avoid redrawing
|
|
the prompt and input line multiple times.
|
|
|
|
b. Fixed history expansion to not be confused by here-string redirection.
|
|
|
|
c. Readline no longer treats read errors by converting them to newlines, as
|
|
it does with EOF. This caused partial lines to be returned from readline().
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.2-alpha,
|
|
and the previous version, bash-3.1-release.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a source bug that caused the minimal configuration to not compile.
|
|
|
|
b. Fixed memory leaks in error handling for the `read' builtin.
|
|
|
|
c. Changed the [[ and (( compound commands to set PIPESTATUS with their exit
|
|
status.
|
|
|
|
d. Fixed some parsing problems with compound array assignments.
|
|
|
|
e. Added additional configuration changes for: NetBSD (incomplete multibyte
|
|
character support)
|
|
|
|
f. Fixed two bugs with local array variable creation when shadowing a variable
|
|
of the same name from a previous context.
|
|
|
|
g. Fixed the `read' builtin to restore the correct set of completion functions
|
|
if a timeout occurs.
|
|
|
|
h. Added code to defer the initialization of HISTSIZE (and its stifling of the
|
|
history list) until the history file is loaded, allowing a startup file to
|
|
override the default value.
|
|
|
|
i. Tightened up the arithmetic expression parsing to produce better error
|
|
messages when presented with invalid operators.
|
|
|
|
j. Fixed the cross-compilation support to build the signal list at shell
|
|
invocation rather than compile time if cross-compiling.
|
|
|
|
k. Fixed multibyte support for non-gcc compilers (or compilers that do not
|
|
allow automatic array variable sizing based on a non-constant value).
|
|
|
|
l. Several fixes to the code that manages the list of terminated jobs and
|
|
their exit statuses, and the list of active and recently-terminated jobs
|
|
to avoid pid aliasing/wraparound and allocation errors.
|
|
|
|
m. Fixed a problem that allowed scripts to die due to SIGINT while waiting
|
|
for children, even when started in the background or otherwise ignoring
|
|
SIGINT.
|
|
|
|
n. Fixed a bug that caused shells invoked as -/bin/bash from not being
|
|
recognized as login shells.
|
|
|
|
o. Fixed a problem that caused shells in the background to give the terminal
|
|
to a process group other than the foreground shell process group.
|
|
|
|
p. Fixed a problem with extracting the `varname' in ${#varname}.
|
|
|
|
q. Fixed the code that handles SIGQUIT to not exit immediately -- thereby
|
|
calling functions that may not be called in a signal handler context --
|
|
but set a flag and exit afterward (like SIGINT).
|
|
|
|
r. Changed the brace expansion code to skip over braces that don't begin a
|
|
valid matched brace expansion construct.
|
|
|
|
s. Fixed `typeset' and `declare' to not require that their shell function
|
|
operands to be valid shell identifiers.
|
|
|
|
t. Changed `test' to use access(2) with a temporary uid/euid swap when testing
|
|
file attributes and running setuid, and access(2) in most other cases.
|
|
|
|
u. Changed completion code to not attempt command name completion on a line
|
|
consisting solely of whitespace when no_empty_command_completion is set.
|
|
|
|
v. The `hash' builtin now prints nothing in posix mode when the hash table is
|
|
empty, and prints a message to that effect to stdout instead of stderr
|
|
when not in posix mode.
|
|
|
|
w. Fixed a bug in the extended pattern matching code that caused it to fail to
|
|
match periods with certain patterns.
|
|
|
|
x. Fixed a bug that caused the shell to dump core when performing filename
|
|
generation in directories with thousands of files.
|
|
|
|
y. Returned to the original Bourne shell rules for parsing ``: no recursive
|
|
parsing of embedded quoted strings or ${...} constructs.
|
|
|
|
z. The inheritence of the DEBUG, RETURN, and ERR traps is now dependent only
|
|
on the settings of the `functrace' and `errtrace' shell options, rather
|
|
than whether or not the shell is in debugging mode.
|
|
|
|
aa. Fixed a problem with $HOME being converted to ~ in the expansion of
|
|
members of the DIRSTACK array.
|
|
|
|
bb. Fixed a problem with quoted arguments to arithmetic expansions in certain
|
|
constructs.
|
|
|
|
cc. The command word completion code now no longer returns matching directories
|
|
while searching $PATH.
|
|
|
|
dd. Fixed a bug with zero-padding and precision handling in snprintf()
|
|
replacement.
|
|
|
|
ee. Fixed a bug that caused the command substitution code not to take embedded
|
|
shell comments into account.
|
|
|
|
ff. Fixed a bug that caused $((...);(...)) to be misinterpreted as an
|
|
arithmetic substitution.
|
|
|
|
gg. Fixed a bug in the prompt expansion code that inappropriately added a
|
|
\001 before a \002 under certain circumstances.
|
|
|
|
hh. Fixed a bug that caused `unset LANG' to not properly reset the locale
|
|
(previous versions would set the locale back to what it was when bash
|
|
was started rather than the system's "native" locale).
|
|
|
|
ii. Fixed a bug that could cause file descriptors > 10 to not be closed even
|
|
when closed explicitly by a script.
|
|
|
|
jj. Fixed a bug that caused single quotes to be stripped from ANSI-C quoting
|
|
inside double-quoted command substitutions.
|
|
|
|
kk. Fixed a bug that could cause core dumps when `return' was executed as the
|
|
last element of a pipeline inside a shell function.
|
|
|
|
ll. Fixed a bug that caused DEBUG trap strings to overwrite commands stored in
|
|
the jobs list.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a problem that caused segmentation faults when using readline in
|
|
callback mode and typing consecutive DEL characters on an empty line.
|
|
|
|
b. Fixed several redisplay problems with multibyte characters, all having to
|
|
do with the different code paths and variable meanings between single-byte
|
|
and multibyte character redisplay.
|
|
|
|
c. Fixed a problem with key sequence translation when presented with the
|
|
sequence \M-\C-x.
|
|
|
|
d. Fixed a problem that prevented the `a' command in vi mode from being
|
|
undone and redone properly.
|
|
|
|
e. Fixed a problem that prevented empty inserts in vi mode from being undone
|
|
properly.
|
|
|
|
f. Fixed a problem that caused readline to initialize with an incorrect idea
|
|
of whether or not the terminal can autowrap.
|
|
|
|
g. Fixed output of key bindings (like bash `bind -p') to honor the setting of
|
|
convert-meta and use \e where appropriate.
|
|
|
|
h. Changed the default filename completion function to call the filename
|
|
dequoting function if the directory completion hook isn't set. This means
|
|
that any directory completion hooks need to dequote the directory name,
|
|
since application-specific hooks need to know how the word was quoted,
|
|
even if no other changes are made.
|
|
|
|
i. Fixed a bug with creating the prompt for a non-interactive search string
|
|
when there are non-printing characters in the primary prompt.
|
|
|
|
j. Fixed a bug that caused prompts with invisible characters to be redrawn
|
|
multiple times in a multibyte locale.
|
|
|
|
k. Fixed a bug that could cause the key sequence scanning code to return the
|
|
wrong function.
|
|
|
|
l. Fixed a problem with the callback interface that caused it to fail when
|
|
using multi-character keyboard macros.
|
|
|
|
m. Fixed a bug that could cause a core dump when an edited history entry was
|
|
re-executed under certain conditions.
|
|
|
|
n. Fixed a bug that caused readline to reference freed memory when attmpting
|
|
to display a portion of the prompt.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. Changed the parameter pattern replacement functions to not anchor the
|
|
pattern at the beginning of the string if doing global replacement - that
|
|
combination doesn't make any sense.
|
|
|
|
b. When running in `word expansion only' mode (--wordexp option), inhibit
|
|
process substitution.
|
|
|
|
c. Loadable builtins now work on MacOS X 10.[34].
|
|
|
|
d. Shells running in posix mode no longer set $HOME, as POSIX requires.
|
|
|
|
e. The code that checks for binary files being executed as shell scripts now
|
|
checks only for NUL rather than any non-printing character.
|
|
|
|
f. Quoting the string argument to the [[ command's =~ operator now forces
|
|
string matching, as with the other pattern-matching operators.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. Calling applications can now set the keyboard timeout to 0, allowing
|
|
poll-like behavior.
|
|
|
|
b. The value of SYS_INPUTRC (configurable at compilation time) is now used as
|
|
the default last-ditch startup file.
|
|
|
|
c. The history file reading functions now allow windows-like \r\n line
|
|
terminators.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.1-release,
|
|
and the previous version, bash-3.1-rc2.
|
|
|
|
1. Changes to Readline
|
|
|
|
a. Several changes to the multibyte redisplay code to fix problems with
|
|
prompts containing invisible characters.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.1-rc2,
|
|
and the previous version, bash-3.1-rc1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that caused a DEBUG trap to overwrite a command string that's
|
|
eventually attached to a background job.
|
|
|
|
b. Changed some code so that filenames with leading tildes with spaces in the
|
|
name aren't tilde-expanded by the bash completion code.
|
|
|
|
c. Fixed a bug that caused the pushd builtin to fail to change to
|
|
directories with leading `-'.
|
|
|
|
d. Fixed a small memory leak in the programmable completion code.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a redisplay bug caused by moving the cursor vertically to a line
|
|
with invisible characters in the prompt in a multibyte locale.
|
|
|
|
b. Fixed a bug that could cause the terminal special chars to be bound in the
|
|
wrong keymap in vi mode.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. If compiled for strict POSIX conformance, LINES and COLUMNS may now
|
|
override the true terminal size.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. A new external application-controllable variable that allows the LINES
|
|
and COLUMNS environment variables to set the window size regardless of
|
|
what the kernel returns.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.1-rc1,
|
|
and the previous version, bash-3.1-beta1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that could cause core dumps due to accessing the current
|
|
pipeline while in the middle of modifying it.
|
|
|
|
b. Fixed a bug that caused pathnames with backslashes still quoting characters
|
|
to be passed to opendir().
|
|
|
|
c. Command word completion now obeys the setting of completion-ignore-case.
|
|
|
|
d. Fixed a problem with redirection that caused file descriptors greater than
|
|
2 to be inappropriately marked as close-on-exec.
|
|
|
|
e. In Posix mode, after `wait' is called to wait for a particular process
|
|
explicitly, that process is removed from the list of processes known to
|
|
the shell, and subsequent attempts to wait for it return errors.
|
|
|
|
f. Fixed a bug that caused extended pattern matching to incorrectly scan
|
|
backslash-escaped pattern characters.
|
|
|
|
g. Fixed a synchronization problem that could cause core dumps when handling
|
|
a SIGWINCH.
|
|
|
|
h. Fixed a bug that caused an unmatched backquote to be accepted without an
|
|
error when processing here documents.
|
|
|
|
i. Fixed a small memory leak in the `cd' builtin.
|
|
|
|
j. Fix for MacOS X so it gets the values for the HOSTTYPE, MACHTYPE, and
|
|
OSTYPE variables at build time, to support universal binaries.
|
|
|
|
k. Fixed a bug that could cause an exit trap to return the exit status of
|
|
the trap command rather than the status as it was before the trap was
|
|
run as the shell's exit status.
|
|
|
|
2. New Features in Bash
|
|
|
|
3. Changes to Readline
|
|
|
|
a. Fixed a bug that caused reversing the incremental search direction to
|
|
not work correctly.
|
|
|
|
b. Fixed the vi-mode `U' command to only undo up to the first time insert mode
|
|
was entered, as Posix specifies.
|
|
|
|
c. Fixed a bug in the vi-mode `r' command that left the cursor in the wrong
|
|
place.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. New application-callable auxiliary function, rl_variable_value, returns
|
|
a string corresponding to a readline variable's value.
|
|
|
|
b. When parsing inputrc files and variable binding commands, the parser
|
|
strips trailing whitespace from values assigned to boolean variables
|
|
before checking them.
|
|
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.1-beta1,
|
|
and the previous version, bash-3.1-alpha1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Added some system-specific signal names.
|
|
|
|
b. Fixed a typo in the ulimit builtin to make `x' the right option to
|
|
maniuplate the limit on file locks.
|
|
|
|
c. Fixed a problem with using += to append to index 0 of an array variable
|
|
when not using subscript syntax.
|
|
|
|
d. A few changes to configure.in to remove calls to obsolete or outdated
|
|
macros.
|
|
|
|
e. Make sure changes to variables bash handles specially (e.g., LC_ALL) are
|
|
made when the variable is set in the temporary environment to a command.
|
|
|
|
f. Make sure changes to variables bash handles specially (e.g., LC_ALL) are
|
|
made when the variable is modified using `printf -v'.
|
|
|
|
g. The export environment is now remade on cygwin when HOME is changed, so
|
|
DLLs bash is linked against pick up the new value. This fixes problems
|
|
with tilde expansion when linking against and already-installed readline.
|
|
|
|
h. Small fix to the logic for performing tilde expansion in posix mode, so
|
|
expansion on the right-hand side of an assignment statement takes place.
|
|
|
|
i. Fixed a bug that prevented redirections associated with a shell function
|
|
from being executed when in a subshell.
|
|
|
|
j. Fixed `source' and `.' builtins to not require an executable file when
|
|
searching $PATH for a file to source.
|
|
|
|
k. Fixed a bug that caused incorrect word splitting in a function when IFS
|
|
was declared local, then unset.
|
|
|
|
l. Fixed a problem with the `kill' builtin that prevented sending signals
|
|
to a process group under certain circumstances when providing a pid < 0.
|
|
|
|
m. When in POSIX mode, `pwd' now checks that the value it prints is the same
|
|
directory as `.', even when displaying $PWD.
|
|
|
|
n. Fixed a problem with the `read' builtin when reading a script from standard
|
|
input and reading data from the same file.
|
|
|
|
o. Fixed a problem with the `type' and `command' builtins that caused absolute
|
|
pathnames to be displayed incorrectly.
|
|
|
|
p. Some changes to the `bg' builtin for POSIX conformance.
|
|
|
|
q. The `fc' builtin now removes the `fc' command that caused it to invoke an
|
|
editor on specified history entries from the history entirely, rather than
|
|
simply ignoring it.
|
|
|
|
r. When in POSIX mode, the `v' command in vi editing mode simply invokes vi
|
|
on the current command, rather than checking $FCEDIT and $EDITOR.
|
|
|
|
s. Fixed a small memory leak in the pathname canonicalization code.
|
|
|
|
t. Fixed a bug that caused the expanded value of a $'...' string to be
|
|
incorrectly re-quoted if it occurred within a double-quoted ${...}
|
|
parameter expansion.
|
|
|
|
u. Restored default emacs-mode key binding of M-TAB to dynamic-complete-history.
|
|
|
|
v. Fixed a bug that caused core dumps when interrupting loops running builtins
|
|
on some systems.
|
|
|
|
w. Make sure that some of the functions bash provides replacements for are
|
|
not cpp defines.
|
|
|
|
x. The code that scans embedded commands for the parser (`...` and $(...)) is
|
|
now more aware of embedded comments and their effect on quoted strings.
|
|
|
|
y. Changed the `-n' option to the `history' builtin to not reset the number of
|
|
history lines read in the current session after reading the new lines from
|
|
the history file if the history is being appended when it is written to
|
|
the file, since the appending takes care of the problem that the adjustment
|
|
was intended to solve.
|
|
|
|
z. Improved the error message displayed when a shell script fails to execute
|
|
because the environment and size of command line arguments are too large.
|
|
|
|
aa. A small fix to make sure that $HISTCMD is evaluated whenever the shell is
|
|
saving commands to the history list, not just when HISTSIZE is defined.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. The `change-case' command now correctly changes the case of multibyte
|
|
characters.
|
|
|
|
b. Changes to the shared library construction scripts to deal with Windows
|
|
DLL naming conventions for Cygwin.
|
|
|
|
c. Fixed the redisplay code to avoid core dumps resulting from a poorly-timed
|
|
SIGWINCH.
|
|
|
|
d. Fixed the non-incremental search code in vi mode to dispose of any current
|
|
undo list when copying a line from the history into the current editing
|
|
buffer.
|
|
|
|
e. The variable assignment code now ignores whitespace at the end of lines
|
|
when assigning to boolean variables.
|
|
|
|
f. The `C-w' binding in incremental search now understands multibyte
|
|
characters.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. A new configuration option, `--enable-strict-posix-default', which will
|
|
build bash to be POSIX conforming by default.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. If the rl_completion_query_items is set to a value < 0, readline never
|
|
asks the user whether or not to view the possible completions.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.1-alpha1,
|
|
and the previous version, bash-3.0-release.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that caused bash to crash if referencing an unset local array.
|
|
|
|
b. Fixed a problem that caused tilde expansion to not be performed before
|
|
attempting globbing word completion.
|
|
|
|
c. Fixed an incompatibility so that a first argument to trap that's a valid
|
|
signal number will be trated as a signal rather than a command to execute.
|
|
|
|
d. Fixed ${#word} expansion to correctly compute the length of a string
|
|
containing multibyte characters.
|
|
|
|
e. Fixed a bug that caused bash to not pass the correct flags for signal
|
|
disposition to child processes.
|
|
|
|
f. Fixed a bug that caused `fc -l' to list one too many history entries.
|
|
|
|
g. Some fixes to `fc' for POSIX conformance.
|
|
|
|
h. Some fixes to job status display for POSIX conformance.
|
|
|
|
i. Fixed a bug that caused `command -v' to display output if a command was not
|
|
found -- it should be silent.
|
|
|
|
j. In POSIX mode, `type' and `command -[vV]' do not report non-executable
|
|
files, even if the shell will attempt to execute them.
|
|
|
|
k. Fixed a bug that caused the `==' operator to the [[ command to not attempt
|
|
extended pattern matching.
|
|
|
|
l. Fixed the brace expansion code to handle characters whose value exceeds 128.
|
|
|
|
m. Fixed `printf' to handle strings with a leading `\0' whose length is
|
|
non-zero.
|
|
|
|
n. Fixed a couple of problems with brace expansion where `${' was handled
|
|
incorrectly.
|
|
|
|
o. Fixed off-by-one error when calculating the upper bound of `offset' when
|
|
processing the ${array[@]:offset:length} expansion.
|
|
|
|
p. System-specific configuration changes for: FreeBSD 5.x, Interix, MacOS X
|
|
10.4, Linux 2.4+ kernels, Linux 3.x kernels, Dragonfly BSD, QNX 6.x,
|
|
Cygwin
|
|
|
|
q. Fixed a bug that caused the shell to ignore the status of the rightmost
|
|
command in a pipeline when the `pipefail' option was enabled.
|
|
|
|
r. Fixed a completion bug that caused core dumps when expanding a directory
|
|
name.
|
|
|
|
s. Fixed a bug that prevented `hash -d' from removing commands from the hash
|
|
table.
|
|
|
|
t. Fixed word splitting to avoid really bad quadratic performance when
|
|
expanding long lists.
|
|
|
|
u. Fixed a bug that caused negative offsets in substring expansion to use the
|
|
wrong values.
|
|
|
|
v. Fixed a bug in printf that caused it to not return failure on write errors.
|
|
|
|
w. Fixed a bug that caused commands in subshells to not be properly timed.
|
|
|
|
x. The shell parser no longer attempts to parse a compound assignment specially
|
|
unless in a position where an assignment statement is acceptable or parsing
|
|
arguments to a builtin that accepts assignment statements.
|
|
|
|
y. Fixed a problem that caused a `case' statement to be added to the history
|
|
incorrectly as a single command if the `case word' was on one line and the
|
|
`in' on another.
|
|
|
|
z. Fixed a problem that caused internal shell quoting characters to be
|
|
incorrectly quoted with backslashes under some circumstances.
|
|
|
|
aa. The shell now performs correct word splitting when IFS contains multibyte
|
|
characters.
|
|
|
|
bb. The mail checking code now resets the cached file information if the size
|
|
drops to 0, even if the times don't change.
|
|
|
|
cc. A completed command name that is found in $PATH as well as the name of a
|
|
directory in the current directory no longer has a slash appended in certain
|
|
circumstances: a single instance found in $PATH when `.' is not in $PATH,
|
|
and multiple instances found in $PATH, even when `.' is in $PATH.
|
|
|
|
dd. Incorporated tilde expansion into the word expansion code rather than as a
|
|
separately-called function, fixing some cases where it was performed
|
|
inappropriately (e.g., after the second `=' in an assignment statement or
|
|
in a double-quoted parameter expansion).
|
|
|
|
ee. Fixed several bugs encountered when parsing compound assignment statements,
|
|
so that compound assignments appearing as arguments to builtins are no
|
|
longer double-expanded.
|
|
|
|
ff. Fixed a bug in the command execution code that caused asynchronous commands
|
|
containing command substitutions to not put the terminal in the wrong
|
|
process group.
|
|
|
|
gg. Bash now handles the case where the WCONTINUED flag causes waitpid() to
|
|
return -1/EINVAL at runtime as well as configuration time.
|
|
|
|
hh. Fixed parser to generate an error when the pipeline `argument' to `!' or
|
|
`time' is NULL.
|
|
|
|
ii. The shell now takes a little more care when manipulating file descriptors
|
|
greater than 9 with the `exec' builtin.
|
|
|
|
jj. Fixed a bug that caused variable assignments preceding the `command' builtin
|
|
preceding a special builtin to be preserved after the command completed in
|
|
POSIX mode.
|
|
|
|
kk. Fixed a bug that allowed variables beginning with a digit to be created.
|
|
|
|
ll. Fixed a bug that caused a \<newline> to be removed when parsing a $'...'
|
|
construct.
|
|
|
|
mm. A shell whose name begins with `-' will now be a restricted shell if the
|
|
remainder of the name indicates it should be restricted.
|
|
|
|
nn. Fixed a bug that could cause a core dump if FUNCNAME were changed or unset
|
|
during a function's execution.
|
|
|
|
oo. Fixed a bug that caused executing a `return' in a function to not execute
|
|
a RETURN trap. The RETURN trap is inherited by shell functions only if
|
|
function tracing is globally enabled or has been enabled for that function.
|
|
|
|
pp. Fixed cases where var[@] was not handled exactly like var, when var is a
|
|
scalar variable.
|
|
|
|
qq. Fixed a bug that caused the first character after a SIGINT to be discarded
|
|
under certain circumstances.
|
|
|
|
rr. Fixed exit status code so that a suspended job returns 128+signal as its
|
|
exit status (preventing commands after it in `&&' lists from being
|
|
executed).
|
|
|
|
ss. Fixed a bug that caused the shell parser state to be changed by executing
|
|
a shell function as a result of word completion.
|
|
|
|
tt. Fixed a long-standing bug that caused '\177' characters in variable
|
|
values to be discarded when expanded in double-quoted strings.
|
|
|
|
uu. Fixed a bug that caused $RANDOM to be re-seeded multiple times in a
|
|
subshell environment.
|
|
|
|
vv. Extensive changes to the job management code to avoid the pid-reuse and
|
|
pid-aliasing problems caused by retaining the exit status of too many jobs,
|
|
but still retain as many background job statuses as POSIX requires.
|
|
|
|
ww. Fixed a parser bug in processing \<newline> that caused things like
|
|
|
|
((echo 5) \
|
|
(echo 6))
|
|
|
|
to not work correctly.
|
|
|
|
xx. `pwd -P' now sets $PWD to a directory name containing no symbolic links
|
|
when in posix mode, as POSIX requires.
|
|
|
|
yy. In posix mode, bash no longer sets $PWD to a name containing no symbolic
|
|
links if a directory is chosen from $CDPATH.
|
|
|
|
zz. The word splitting code now treats an IFS character that is not space,
|
|
tab, or newline and any adjacent IFS white space as a single delimiter, as
|
|
SUSv3/XPG6 require.
|
|
|
|
aaa. The `read' builtin now checks whether or not the number of fields read is
|
|
exactly the same as the number of variables instead of just assigning the
|
|
rest of the line (minus any trailing IFS white space) to the last
|
|
variable. This is what POSIX/SUS/XPG all require.
|
|
|
|
bbb. Fixed a bug that caused `read' to always check whether or not fd 0 was a
|
|
pipe, even when reading from another file descriptor.
|
|
|
|
ccc. Fixed a bug that caused short-circuiting of execution even if the return
|
|
value was being inverted.
|
|
|
|
ddd. Fixed a bug that caused a core dump while decoding \W escapes in PS1 if
|
|
PWD was unset.
|
|
|
|
eee. Fixed a bug in `read' that counted internal quoting characters for the
|
|
purposes of `read -n'.
|
|
|
|
fff. Fixed a bug so that a function definition in a pipeline causes a child
|
|
process to be forked at the right time.
|
|
|
|
ggg. Bash will not attempt to link against a readline library that doesn't
|
|
have rl_gnu_readline_p == 1.
|
|
|
|
hhh. Fixed a bug that caused `read' to consume one too many characters when
|
|
reading a fixed number of characters and the Nth character is a backslash.
|
|
|
|
iii. Fixed a bug that caused `unset' on variables in the temporary environment
|
|
to leave them set when `unset' completed.
|
|
|
|
jjj. Fixed a bug that caused bash to close fd 2 if an `exec' failed and the
|
|
shell didn't exit.
|
|
|
|
kkk. The completion code is more careful to not turn `/' or `///' into `//',
|
|
for those systems on which `//' has special meaning.
|
|
|
|
lll. Fixed a bug that caused command substitution in asynchronous commands to
|
|
close the wrong file descriptors.
|
|
|
|
mmm. The shell no longer prints status messages about terminated background
|
|
processes unless job control is active.
|
|
|
|
nnn. Fixed a bug that prevented multiple consecutive invocations of `history -s'
|
|
from adding all the commands to the history list.
|
|
|
|
ooo. Added a couple of changes to make arithmetic expansion more consistent in
|
|
all its contexts (still not perfect).
|
|
|
|
ppp. Fixed a bug that caused the parser to occasionally not find the right
|
|
terminating "`" in an old-style command substitution.
|
|
|
|
qqq. Fixed a bug that caused core dumps when the shell was reading its non-
|
|
interactive input from fd 0 and fd 0 was duplicated and restored using a
|
|
combination of `exec' (to save) and redirection (to restore).
|
|
|
|
rrr. Fixed a problem that caused loops in sourced scripts to not be cleaned
|
|
up properly when a `return' is executed.
|
|
|
|
sss. Change internal command substitution completion function to append a slash
|
|
to directory names in the command.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug that caused multiliine prompts to be wrapped and displayed
|
|
incorrectly.
|
|
|
|
b. Fixed a bug that caused ^P/^N in emacs mode to fail to display the current
|
|
line correctly.
|
|
|
|
c. Fixed a problem in computing the number of invisible characters on the first
|
|
line of a prompt whose length exceeds the screen width.
|
|
|
|
d. Fixed vi-mode searching so that failure preserves the current line rather
|
|
than the last line in the history list.
|
|
|
|
e. Fixed the vi-mode `~' command (change-case) to have the correct behavior at
|
|
end-of-line when manipulating multibyte characters.
|
|
|
|
f. Fixed the vi-mode `r' command (change-char) to have the correct behavior at
|
|
end-of-line when manipulating multibyte characters.
|
|
|
|
g. Fixed multiple bugs in the redisplay of multibyte characters: displaying
|
|
prompts longer than the screen width containing multibyte characters,
|
|
|
|
h. Fix the calculation of the number of physical characters in the prompt
|
|
string when it contains multibyte characters.
|
|
|
|
i. A non-zero value for the `rl_complete_suppress_append' variable now causes
|
|
no `/' to be appended to a directory name.
|
|
|
|
j. Fixed forward-word and backward-word to work when words contained
|
|
multibyte characters.
|
|
|
|
k. Fixed a bug in finding the delimiter of a `?' substring when performing
|
|
history expansion in a locale that supports multibyte characters.
|
|
|
|
l. Fixed a memory leak caused by not freeing the timestamp in a history entry.
|
|
|
|
m. Fixed a bug that caused "\M-x" style key bindings to not obey the setting
|
|
of the `convert-meta' variable.
|
|
|
|
n. Fixed saving and restoring primary prompt when prompting for incremental
|
|
and non-incremental searches; search prompts now display multibyte
|
|
characters correctly.
|
|
|
|
o. Fixed a bug that caused keys originally bound to self-insert but shadowed
|
|
by a multi-character key sequence to not be inserted.
|
|
|
|
p. Fixed code so rl_prep_term_function and rl_deprep_term_function aren't
|
|
dereferenced if NULL (matching the documentation).
|
|
|
|
q. Extensive changes to readline to add enough state so that commands
|
|
requiring additional characters (searches, multi-key sequences, numeric
|
|
arguments, commands requiring an additional specifier character like
|
|
vi-mode change-char, etc.) work without synchronously waiting for
|
|
additional input.
|
|
|
|
r. Lots of changes so readline builds and runs on MinGW.
|
|
|
|
s. Readline no longer tries to modify the terminal settings when running in
|
|
callback mode.
|
|
|
|
t. The Readline display code no longer sets the location of the last invisible
|
|
character in the prompt if the \[\] sequence is empty.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. Bash now understands LC_TIME as a special variable so that time display
|
|
tracks the current locale.
|
|
|
|
b. BASH_ARGC, BASH_ARGV, BASH_SOURCE, and BASH_LINENO are no longer created
|
|
as `invisible' variables and may not be unset.
|
|
|
|
c. In POSIX mode, if `xpg_echo' option is enabled, the `echo' builtin doesn't
|
|
try to interpret any options at all, as POSIX requires.
|
|
|
|
d. The `bg' builtin now accepts multiple arguments, as POSIX seems to specify.
|
|
|
|
e. Fixed vi-mode word completion and glob expansion to perform tilde
|
|
expansion.
|
|
|
|
f. The `**' mathematic exponentiation operator is now right-associative.
|
|
|
|
g. The `ulimit' builtin has new options: -i (max number of pending signals),
|
|
-q (max size of POSIX message queues), and -x (max number of file locks).
|
|
|
|
h. A bare `%' once again expands to the current job when used as a job
|
|
specifier.
|
|
|
|
i. The `+=' assignment operator (append to the value of a string or array) is
|
|
now supported for assignment statements and arguments to builtin commands
|
|
that accept assignment statements.
|
|
|
|
j. BASH_COMMAND now preserves its value when a DEBUG trap is executed.
|
|
|
|
k. The `gnu_errfmt' option is enabled automatically if the shell is running
|
|
in an emacs terminal window.
|
|
|
|
l. New configuration option: --single-help-strings. Causes long help text
|
|
to be written as a single string; intended to ease translation.
|
|
|
|
m. The COMP_WORDBREAKS variable now causes the list of word break characters
|
|
to be emptied when the variable is unset.
|
|
|
|
n. An unquoted expansion of $* when $IFS is empty now causes the positional
|
|
parameters to be concatenated if the expansion doesn't undergo word
|
|
splitting.
|
|
|
|
o. Bash now inherits $_ from the environment if it appears there at startup.
|
|
|
|
p. New shell option: nocasematch. If non-zero, shell pattern matching ignores
|
|
case when used by `case' and `[[' commands.
|
|
|
|
q. The `printf' builtin takes a new option: -v var. That causes the output
|
|
to be placed into var instead of on stdout.
|
|
|
|
r. By default, the shell no longer reports processes dying from SIGPIPE.
|
|
|
|
s. Bash now sets the extern variable `environ' to the export environment it
|
|
creates, so C library functions that call getenv() (and can't use the
|
|
shell-provided replacement) get current values of environment variables.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. The key sequence sent by the keypad `delete' key is now automatically
|
|
bound to delete-char.
|
|
|
|
b. A negative argument to menu-complete now cycles backward through the
|
|
completion list.
|
|
|
|
c. A new bindable readline variable: bind-tty-special-chars. If non-zero,
|
|
readline will bind the terminal special characters to their readline
|
|
equivalents when it's called (on by default).
|
|
|
|
d. New bindable command: vi-rubout. Saves deleted text for possible
|
|
reinsertion, as with any vi-mode `text modification' command; `X' is bound
|
|
to this in vi command mode.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.0-release,
|
|
and the previous version, bash-3.0-rc1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a boundary overrun that could cause segmentation faults when the
|
|
completion code hands an incomplete construct to the word expansion
|
|
functions.
|
|
|
|
b. Changed posix mode behavior so that an error in a variable assignment
|
|
preceding a special builtin causes a non-interactive shell to exit.
|
|
|
|
c. Change the directory expansion portion of the completion code to not
|
|
expand embedded command substitutions if the directory name appears in
|
|
the file system.
|
|
|
|
d. Fixed a problem that caused `bash -r' to turn on restrictions before
|
|
reading the startup files.
|
|
|
|
e. Fixed a problem with the default operation of the `umask' builtin.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a problem with readline saving the contents of the current line
|
|
before beginning a non-interactive search.
|
|
|
|
b. Fixed a problem with EOF detection when using rl_event_hook.
|
|
|
|
c. Fixed a problem with the vi mode `p' and `P' commands ignoring numeric
|
|
arguments.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.0-rc1,
|
|
and the previous version, bash-3.0-beta1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a bug that caused incorrect behavior when referecing element 0 of
|
|
an array using $array, element 0 was unset, and `set -u' was enabled.
|
|
|
|
b. System-specific changes for: SCO Unix 3.2, Tandem.
|
|
|
|
c. Fixed a bug that caused inappropriate word splitting when a variable was
|
|
expanded within a double-quoted string that also included $@.
|
|
|
|
d. Fixed a bug that caused `pwd' to not display anything in physical mode
|
|
when the file system had changed underneath the shell.
|
|
|
|
e. Fixed a bug in the pre- and post- increment and decrement parsing in the
|
|
expression evaluator that caused errors when the operands and corresponding
|
|
operators were separated by whitespace.
|
|
|
|
f. Fixed a bug that caused `history -p' to add an entry to the history list,
|
|
counter to the documentation. (Keeps the history expansions invoked by
|
|
emacs-mode command line editing from doing that as well.)
|
|
|
|
g. Fixed a bug that could cause a core dump if `cd' is asked to print out a
|
|
pathname longer than PATH_MAX characters.
|
|
|
|
h. Fixed a bug that caused jobs to be put into the wrong process group under
|
|
some circumstances after enabling job control with `set -m'.
|
|
|
|
i. `unalias' now returns failure if no alias name arguments are supplied.
|
|
|
|
j. Documented the characters not allowed to appear in an alias name.
|
|
|
|
k. $* is no longer expanded as if in double quotes when it appears in the
|
|
body of a here document, as the SUS seems to require.
|
|
|
|
l. The `bashbug' script now uses a directory in $TMPDIR for exclusive
|
|
access rather than trying to guess how the underlying OS provides for
|
|
secure temporary file creation.
|
|
|
|
m. Fixed a few problems with `cd' and `pwd' when asked to operate on pathnames
|
|
longer than PATH_MAX characters.
|
|
|
|
n. Fixed a memory leak caused when creating multiple local array variables
|
|
with identical names.
|
|
|
|
o. Fixed a problem with calls to getcwd() so that bash now operates better
|
|
when the full pathname to the current directory is longer than PATH_MAX
|
|
bytes.
|
|
|
|
p. The `trap' builtin now reports an error if a single non-signal argument
|
|
is specified.
|
|
|
|
q. Fixed a bug that caused `umask' to not work correctly when presented
|
|
with a mask of all 0s.
|
|
|
|
r. When `getopts' reaches the end of options, OPTARG is unset, as POSIX
|
|
appears to specify.
|
|
|
|
s. Interactive mode now depends on whether or not stdin and stderr are
|
|
connected to a tty; formerly it was stdin and stdout. POSIX requires
|
|
this.
|
|
|
|
t. Fixed vi-mode completion to work more as POSIX specifies (e.g., doing the
|
|
right kind of filename generation).
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a problem that could cause readline to refer to freed memory when
|
|
moving between history lines while doing searches.
|
|
|
|
b. Improvements to the code that expands and displays prompt strings
|
|
containing multibyte characters.
|
|
|
|
c. Fixed a problem with vi-mode not correctly remembering the numeric argument
|
|
to the last `c'hange command for later use with `.'.
|
|
|
|
d. Fixed a bug in vi-mode that caused multi-digit count arguments to work
|
|
incorrectly.
|
|
|
|
e. Fixed a problem in vi-mode that caused the last text modification command
|
|
to not be remembered across different command lines.
|
|
|
|
f. Fixed problems with changing characters and changing case at the end of
|
|
the line.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. The `jobs', `kill', and `wait' builtins now accept job control notation
|
|
even if job control is not enabled.
|
|
|
|
b. The historical behavior of `trap' that allows a missing `action' argument
|
|
to cause each specified signal's handling to be reset to its default is
|
|
now only supported when `trap' is given a single non-option argument.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. When listing completions, directories have a `/' appended if the
|
|
`mark-directories' option has been enabled.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.0-beta1,
|
|
and the previous version, bash-3.0-alpha.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixes to build correctly when arrays are not compiled into the shell.
|
|
|
|
b. Fixed command substitution to run any exit trap defined in the command
|
|
substitution before returning; the exit trap is not inherited from the
|
|
calling shell.
|
|
|
|
c. Fixes to process group synchronization code so that every child process
|
|
attempts to set the terminal's process group; fixes some synchronization
|
|
problems on Linux kernels that schedule the child to always run before
|
|
the parent.
|
|
|
|
d. Fixed processing of octal and hex constants in printf builtin for POSIX.2
|
|
compliance.
|
|
|
|
e. Fixed a couple of core dumps in the pattern removal code.
|
|
|
|
f. Fixes to the array subrange extraction code to deal better with sparse
|
|
arrays.
|
|
|
|
g. Parser errors and other errors that result in the shell exiting now cause
|
|
the exit trap to be run.
|
|
|
|
h. Change the command substitution completion functions to not append any
|
|
closing quote, because it would be inserted a closing "`" or ")".
|
|
|
|
i. Fix history initialization so assignments to $histchars made in startup
|
|
files are honored.
|
|
|
|
j. If an exit trap does not contain a call to `exit', the shell now uses
|
|
the exit status of the last command executed before the trap as the exit
|
|
status of the shell.
|
|
|
|
k. The parser now prompts with $PS2 if it reads a newline while parsing a
|
|
compound array assignment statement.
|
|
|
|
l. When performing a compound array assignment, the parser doesn't treat
|
|
words of the form [index]=value as assignments if they're the result of
|
|
expansions.
|
|
|
|
m. Fixed a bug that caused `return' executed in a trap command to make the
|
|
shell think it was still running the trap.
|
|
|
|
n. Fixed the value of errno set by the pathname canonicalization functions.
|
|
|
|
o. Changed the grammar so that `time' alone on a line times a null command
|
|
rather than being a syntax error.
|
|
|
|
p. The pattern substitution code no longer performs quote removal on the
|
|
pattern before trying to match it, as the pattern removal functions do.
|
|
|
|
q. Fixed a bug that could cause core dumps when checking whether a quoted
|
|
command name was being completed.
|
|
|
|
r. Fixes to the pattern removal and pattern replacement expansions to deal
|
|
with multibyte characters better (and faster).
|
|
|
|
s. Fix to the substring expansion (${param:off[:len]}) to deal with (possibly
|
|
multibyte) characters instead of raw bytes.
|
|
|
|
t. Fixed a bug that caused some key bindings set in an inputrc to be ignored
|
|
at shell startup.
|
|
|
|
u. Fixed a bug that caused unsetting a local variable within a function to
|
|
not work correctly.
|
|
|
|
v. Fixed a bug that caused invalid variables to be created when using
|
|
`read -a'.
|
|
|
|
w. Fixed a bug that caused "$@" to expand incorrectly when used as the right
|
|
hand side of a parameter expansion such as ${word:="$@"} if the first
|
|
character of $IFS was not a space.
|
|
|
|
x. Fixed a slight cosmetic problem when printing commands containing a
|
|
`>&word' redirection.
|
|
|
|
y. Fixed a problem that could cause here documents to not be created correctly
|
|
if the system temporary directory did not allow writing.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Change to history expansion functions to treat `^' as equivalent to word
|
|
one, as the documention states.
|
|
|
|
b. Some changes to the display code to improve display and redisplay of
|
|
multibyte characters.
|
|
|
|
c. Changes to speed up the multibyte character redisplay code.
|
|
|
|
d. Fixed a bug in the vi-mode `E' command that caused it to skip over the
|
|
last character of a word if invoked while point was on the word's
|
|
next-to-last character.
|
|
|
|
e. Fixed a bug that could cause incorrect filename quoting when
|
|
case-insensitive completion was enabled and the word being completed
|
|
contained backslashes quoting word break characters.
|
|
|
|
f. Fixed a bug in redisplay triggered when the prompt string contains
|
|
invisible characters.
|
|
|
|
g. Fixed some display (and other) bugs encountered in multibyte locales
|
|
when a non-ascii character was the last character on a line.
|
|
|
|
h. Fixed some display bugs caused by multibyte characters in prompt strings.
|
|
|
|
i. Fixed a problem with history expansion caused by non-whitespace characters
|
|
used as history word delimiters.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. printf builtin understands two new escape sequences: \" and \?.
|
|
|
|
b. `echo -e' understands two new escape sequences: \" and \?.
|
|
|
|
c. The GNU `gettext' package and libintl have been integrated; the shell's
|
|
messages can be translated into different languages.
|
|
|
|
d. The `\W' prompt expansion now abbreviates $HOME as `~', like `\w'.
|
|
|
|
e. The error message printed when bash cannot open a shell script supplied
|
|
as argument 1 now includes the name of the shell, to better identify
|
|
the error as coming from bash.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. New application variable, rl_completion_quote_character, set to any
|
|
quote character readline finds before it calls the application completion
|
|
function.
|
|
|
|
b. New application variable, rl_completion_suppress_quote, settable by an
|
|
application completion function. If set to non-zero, readline does not
|
|
attempt to append a closing quote to a completed word.
|
|
|
|
c. New application variable, rl_completion_found_quote, set to a non-zero
|
|
value if readline determines that the word to be completed is quoted.
|
|
Set before readline calls any application completion function.
|
|
|
|
d. New function hook, rl_completion_word_break_hook, called when readline
|
|
needs to break a line into words when completion is attempted. Allows
|
|
the word break characters to vary based on position in the line.
|
|
|
|
e. New bindable command: unix-filename-rubout. Does the same thing as
|
|
unix-word-rubout, but adds `/' to the set of word delimiters.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-3.0-alpha,
|
|
and the previous version, bash-2.05b-release.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixes so that the shell will compile without some of the default options
|
|
defined.
|
|
|
|
b. Fixed an error message that did not pass enough arguments to printf.
|
|
|
|
c. Fixed a bug that caused input redirection to a builtin inside a script
|
|
being read from standard input to result in the rest of the already-
|
|
read and buffered script to be discarded.
|
|
|
|
d. Fixed a bug that caused subshell initialization to close the file
|
|
descriptor from which the shell was reading a script under certain
|
|
circumstances.
|
|
|
|
e. Fixed a bug that caused the shell to not advance a string pointer over
|
|
a null wide character when doing string operations.
|
|
|
|
f. Fixed the internal logout code so that shells that time out waiting for
|
|
input (using $TMOUT) run ~/.bash_logout.
|
|
|
|
g. Portability and configuration changes for: cygwin, HP/UX, GNU/FreeBSD.
|
|
|
|
h. The parser no longer adds implicit double quotes to ((...)) arithmetic
|
|
commands.
|
|
|
|
i. The ((...)) arithmetic command evaluation code was fixed to not dump core
|
|
when the expanded string is null.
|
|
|
|
j. The ((...)) arithmetic command evaluation code was fixed to not perform
|
|
variable assignments while expanding the expression.
|
|
|
|
k. Fixed a bug that caused word splitting to be performed incorrectly when
|
|
IFS is set, but null.
|
|
|
|
l. Fixed a bug in brace expansion that caused a quoted `$' preceding an
|
|
open brace to inhibit brace expansion.
|
|
|
|
m. Fixed a bug that caused a leading `-' in the shell's name to cause it to
|
|
not be recognized as a restricted shell.
|
|
|
|
n. Fixed a bug in the arithmetic evaluation code that could cause longjmps
|
|
to an invalid location and result in a core dump.
|
|
|
|
o. Fixed a bug in the calculation of how many history lines are new in a
|
|
single shell session when reading new history lines from a file with
|
|
`history -n'.
|
|
|
|
p. Fixed a bug in pathname canonicalization that caused the shell to dump
|
|
core when presented with a pathname longer than PATH_MAX.
|
|
|
|
q. Fixed the parser so that it doesn't try to compare a char variable to
|
|
EOF, which fails when chars are unsigned.
|
|
|
|
r. Fixed a bug in the simple command execution code that caused occasional
|
|
core dumps.
|
|
|
|
s. The shell does a better job of saving any partial parsing state during
|
|
operations which cause a command to be executed while a line is being
|
|
entered and parsed.
|
|
|
|
t. The completion code now splits words more like the expansion code when
|
|
$IFS is used to split.
|
|
|
|
u. The locale code does a better job of recomputing the various locale
|
|
variable values when LC_ALL is unset.
|
|
|
|
v. The programmable completion code does a better job of dequoting expanded
|
|
word lists before comparing them against the word to be matched.
|
|
|
|
w. The shell no longer seg faults if the expanded value of $PS4 is null
|
|
and `set -x' is enabled.
|
|
|
|
x. Fixed a bug that caused core dumps when a here string expanded to NULL.
|
|
|
|
y. The mail checking code now makes sure the mailbox is bigger before
|
|
reporting the existence of new mail.
|
|
|
|
z. The parser does not try to expand $'...' and $"..." when the appear
|
|
within double quotes unless the `extquote' option has been enabled with
|
|
`shopt'. For backwards compatibility, it is enabled by default.
|
|
|
|
aa. Fixed a bug that caused `for x; do ...' and `select x; do ... to use
|
|
$@ instead of "$@" for the implicit list of arguments.
|
|
|
|
bb. Fixed a bug that caused a subshell of a restricted shell (e.g., one
|
|
spawned to execute a pipeline) to not exit immediately if attempting
|
|
to use a command containing a slash.
|
|
|
|
cc. Fixed a problem with empty replacements for a pattern that doesn't match
|
|
when performing ${param/word/} expansion.
|
|
|
|
dd. Word expansions performed while expanding redirections no longer search
|
|
a command's temporary environment to expand variable values.
|
|
|
|
ee. Improvements to the alias expansion code when expanding subsequent words
|
|
because an aliase's value ends with a space.
|
|
|
|
ff. `cd -' now prints the current working directory after a successful chdir
|
|
even when the shell is not interactive, as the standard requires.
|
|
|
|
gg. The shell does a better job of ensuring a child process dies of SIGINT
|
|
before resending SIGINT to itself.
|
|
|
|
hh. The arithmetic expansion variable assignment code now does the right
|
|
thing when assigning to `special' variables like OPTIND.
|
|
|
|
ii. When history expansion verification is enabled, the bash readline helper
|
|
functions that do history expansion on the current line don't print
|
|
the results.
|
|
|
|
jj. Fixed bugs with multiple consecutive alias expansion when one of the
|
|
expansions ends with a space.
|
|
|
|
kk. Fixed a problem in the programmable completion code that could cause core
|
|
dumps when trying to initialize a set of possible completions from a
|
|
list of variables.
|
|
|
|
ll. The \[ and \] escape characters are now ignored when decoding the prompt
|
|
string if the shell is started with editing disabled.
|
|
|
|
mm. Fixed a bug that could leave extra characters in a string when doing
|
|
quoted null character removal.
|
|
|
|
nn. Command substitution and other subshell operations no longer reset the
|
|
line number (aids the bash debugger).
|
|
|
|
oo. Better line number management when executing simple commands, conditional
|
|
commands, for commands, and select commands.
|
|
|
|
pp. The globbing code now uses malloc, with its better failure properties,
|
|
rather than alloca().
|
|
|
|
qq. Fixed a bug that caused expansions like #{a[2]:=value} to create the
|
|
appropriate array element instead of a variable named `a[2]'.
|
|
|
|
rr. Fixed a bug in the handling of a `?(...)' pattern immediately following
|
|
a `*' when extglob is enabled.
|
|
|
|
ss. Fixed a bug that caused a `return' invoked in an exit trap when exit is
|
|
invoked in a function to misbehave.
|
|
|
|
tt. Fixed a bug that caused CTLESC and CTLNUL characters to not be escaped
|
|
by the internal shell string quoting functions.
|
|
|
|
uu. Fixed a bug that caused quoted null characters in an expanded word list
|
|
to be inappropriately assigned to an array variable when using `read -a'.
|
|
|
|
vv. Fixed a bug that caused redirections accompanying a null command to persist
|
|
in the current shell.
|
|
|
|
ww. Fixed a bug that caused the prompt to be printed when the shell was
|
|
expanding a multiline alias.
|
|
|
|
xx. Fixed a bug that resulted in core dumps when the completion for a command
|
|
changed the compspec.
|
|
|
|
yy. Fixed a bug that caused evaluation of programmable completions to print
|
|
notifications of completed jobs.
|
|
|
|
zz. Bash now disables line editing when $EMACS == `t' and $TERM == `dumb'
|
|
(which is what emacs shell windows do).
|
|
|
|
aaa. In posix mode, `kill -l' causes signal names to be displayed without
|
|
a leading `SIG'.
|
|
|
|
bbb. Clear error flag on standard output so it doesn't persist across multiple
|
|
builtin commands.
|
|
|
|
ccc. In posix mode, `alias' displays alias values without the leading `alias',
|
|
so the output cannot be used as subsequent input.
|
|
|
|
ddd. In posix mode, the `trap' builtin doesn't check whether or not its
|
|
first argument is a signal specification and revert the signal handling
|
|
to its original disposition if it is.
|
|
|
|
eee. Fixed several bugs in the handling of "$*" and "${array[*]}" by the
|
|
pattern substitution and removal expansions.
|
|
|
|
fff. Fixed several problems with the handling of ${array[@]}, ${array[*]},
|
|
$@, and $* by the indirect variable expansion code.
|
|
|
|
ggg. Fixed a bug that did not allow `time' to be aliased.
|
|
|
|
hhh. Improved the mail checking code so it won't check (and possibly cause an
|
|
NFS file system mount) until MAILPATH or MAIL is given a value -- there
|
|
is no default if DEFAULT_MAIL_DIRECTORY is not defined at compile time.
|
|
(It is computed by configure, but can be #undef'd in config-bot.h.)
|
|
|
|
iii. If the `chkwinsize' option is enabled, the shell checks for window size
|
|
changes if a child process exits due to a signal.
|
|
|
|
jjj. Removed the attempts to avoid adding a slash at the end of a completed
|
|
executable name if there was a directory with the same name in the
|
|
current directory.
|
|
|
|
kkk. Fixed PATH lookup code so it treats the permission bits separately for
|
|
owner, group, and other, rather than checking them all.
|
|
|
|
lll. Fixed the locale code to reset the parser's idea of the character class
|
|
<blank>, which controls how it splits tokens, when the locale changes.
|
|
|
|
mmm. The shell now binds its special readline functions and key bindings only
|
|
if the user's inputrc file has not already bound them.
|
|
|
|
nnn. The shell now reports on processes that dump core due to signals when
|
|
invoked as `-c command'.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixes to avoid core dumps because of null pointer references in the
|
|
multibyte character code.
|
|
|
|
b. Fix to avoid infinite recursion caused by certain key combinations.
|
|
|
|
c. Fixed a bug that caused the vi-mode `last command' to be set incorrectly.
|
|
|
|
d. Readline no longer tries to read ahead more than one line of input, even
|
|
when more is available.
|
|
|
|
e. Fixed the code that adjusts the point to not mishandle null wide
|
|
characters.
|
|
|
|
f. Fixed a bug in the history expansion `g' modifier that caused it to skip
|
|
every other match.
|
|
|
|
g. Fixed a bug that caused the prompt to overwrite previous output when the
|
|
output doesn't contain a newline and the locale supports multibyte
|
|
characters. This same change fixes the problem of readline redisplay
|
|
slowing down dramatically as the line gets longer in multibyte locales.
|
|
|
|
h. History traversal with arrow keys in vi insertion mode causes the cursor
|
|
to be placed at the end of the new line, like in emacs mode.
|
|
|
|
i. The locale initialization code does a better job of using the right
|
|
precedence and defaulting when checking the appropriate environment
|
|
variables.
|
|
|
|
j. Fixed the history word tokenizer to handle <( and >( better when used as
|
|
part of bash.
|
|
|
|
k. The overwrite mode code received several bug fixes to improve undo.
|
|
|
|
l. Many speedups to the multibyte character redisplay code.
|
|
|
|
m. The callback character reading interface should not hang waiting to read
|
|
keyboard input.
|
|
|
|
n. Fixed a bug with redoing vi-mode `s' command.
|
|
|
|
o. The code that initializes the terminal tracks changes made to the terminal
|
|
special characters with stty(1) (or equivalent), so that these changes
|
|
are reflected in the readline bindings. New application-callable function
|
|
to make it work: rl_tty_unset_default_bindings().
|
|
|
|
p. Fixed a bug that could cause garbage to be inserted in the buffer when
|
|
changing character case in vi mode when using a multibyte locale.
|
|
|
|
q. Fixed a bug in the redisplay code that caused problems on systems
|
|
supporting multibyte characters when moving between history lines when the
|
|
new line has more glyphs but fewer bytes.
|
|
|
|
r. Undo and redo now work better after exiting vi insertion mode.
|
|
|
|
s. Make sure system calls are restarted after a SIGWINCH is received using
|
|
SA_RESTART.
|
|
|
|
t. Improvements to the code that displays possible completions when using
|
|
multibyte characters.
|
|
|
|
u. Fixed a problem when parsing nested if statements in inputrc files.
|
|
|
|
v. The completer now takes multibyte characters into account when looking for
|
|
quoted substrings on which to perform completion.
|
|
|
|
w. The history search functions now perform better bounds checking on the
|
|
history list.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. ANSI string expansion now implements the \x{hexdigits} escape.
|
|
|
|
b. There is a new loadable `strftime' builtin.
|
|
|
|
c. New variable, COMP_WORDBREAKS, which controls the readline completer's
|
|
idea of word break characters.
|
|
|
|
d. The `type' builtin no longer reports on aliases unless alias expansion
|
|
will actually be performed.
|
|
|
|
e. HISTCONTROL is now a colon-separated list of values, which permits
|
|
more extensibility and backwards compatibility.
|
|
|
|
f. HISTCONTROL may now include the `erasedups' option, which causes all lines
|
|
matching a line being added to be removed from the history list.
|
|
|
|
g. `configure' has a new `--enable-multibyte' argument that permits multibyte
|
|
character support to be disabled even on systems that support it.
|
|
|
|
h. New variables to support the bash debugger: BASH_ARGC, BASH_ARGV,
|
|
BASH_SOURCE, BASH_LINENO, BASH_SUBSHELL, BASH_EXECUTION_STRING,
|
|
BASH_COMMAND
|
|
|
|
i. FUNCNAME has been changed to support the debugger: it's now an array
|
|
variable.
|
|
|
|
j. for, case, select, arithmetic commands now keep line number information
|
|
for the debugger.
|
|
|
|
k. There is a new `RETURN' trap executed when a function or sourced script
|
|
returns (not inherited child processes; inherited by command substitution
|
|
if function tracing is enabled and the debugger is active).
|
|
|
|
l. New invocation option: --debugger. Enables debugging and turns on new
|
|
`extdebug' shell option.
|
|
|
|
m. New `functrace' and `errtrace' options to `set -o' cause DEBUG and ERR
|
|
traps, respectively, to be inherited by shell functions. Equivalent to
|
|
`set -T' and `set -E' respectively. The `functrace' option also controls
|
|
whether or not the DEBUG trap is inherited by sourced scripts.
|
|
|
|
n. The DEBUG trap is run before binding the variable and running the action
|
|
list in a `for' command, binding the selection variable and running the
|
|
query in a `select' command, and before attempting a match in a `case'
|
|
command.
|
|
|
|
o. New `--enable-debugger' option to `configure' to compile in the debugger
|
|
support code.
|
|
|
|
p. `declare -F' now prints out extra line number and source file information
|
|
if the `extdebug' option is set.
|
|
|
|
q. If `extdebug' is enabled, a non-zero return value from a DEBUG trap causes
|
|
the next command to be skipped, and a return value of 2 while in a
|
|
function or sourced script forces a `return'.
|
|
|
|
r. New `caller' builtin to provide a call stack for the bash debugger.
|
|
|
|
s. The DEBUG trap is run just before the first command in a function body is
|
|
executed, for the debugger.
|
|
|
|
t. `for', `select', and `case' command heads are printed when `set -x' is
|
|
enabled.
|
|
|
|
u. There is a new {x..y} brace expansion, which is shorthand for {x.x+1,
|
|
x+2,...,y}. x and y can be integers or single characters; the sequence
|
|
may ascend or descend; the increment is always 1.
|
|
|
|
v. New ksh93-like ${!array[@]} expansion, expands to all the keys (indices)
|
|
of array.
|
|
|
|
w. New `force_fignore' shopt option; if enabled, suffixes specified by
|
|
FIGNORE cause words to be ignored when performing word completion even
|
|
if they're the only possibilities.
|
|
|
|
x. New `gnu_errfmt' shopt option; if enabled, error messages follow the `gnu
|
|
style' (filename:lineno:message) format.
|
|
|
|
y. New `-o bashdefault' option to complete and compgen; if set, causes the
|
|
whole set of bash completions to be performed if the compspec doesn't
|
|
result in a match.
|
|
|
|
z. New `-o plusdirs' option to complete and compgen; if set, causes directory
|
|
name completion to be performed and the results added to the rest of the
|
|
possible completions.
|
|
|
|
aa. `kill' is available as a builtin even when the shell is built without
|
|
job control.
|
|
|
|
bb. New HISTTIMEFORMAT variable; value is a format string to pass to
|
|
strftime(3). If set and not null, the `history' builtin prints out
|
|
timestamp information according to the specified format when displaying
|
|
history entries. If set, bash tells the history library to write out
|
|
timestamp information when the history file is written.
|
|
|
|
cc. The [[ ... ]] command has a new binary `=~' operator that performs
|
|
extended regular expression (egrep-like) matching.
|
|
|
|
dd. `configure' has a new `--enable-cond-regexp' option (enabled by default)
|
|
to enable the =~ operator and regexp matching in [[ ... ]].
|
|
|
|
ee. Subexpressions matched by the =~ operator are placed in the new
|
|
BASH_REMATCH array variable.
|
|
|
|
ff. New `failglob' option that causes an expansion error when pathname
|
|
expansion fails to produce a match.
|
|
|
|
gg. New `set -o pipefail' option that causes a pipeline to return a failure
|
|
status if any of the processes in the pipeline fail, not just the last
|
|
one.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. History expansion has a new `a' modifier equivalent to the `g' modifier
|
|
for compatibility with the BSD csh.
|
|
|
|
b. History expansion has a new `G' modifier equivalent to the BSD csh `g'
|
|
modifier, which performs a substitution once per word.
|
|
|
|
c. All non-incremental search operations may now undo the operation of
|
|
replacing the current line with the history line.
|
|
|
|
d. The text inserted by an `a' command in vi mode can be reinserted with
|
|
`.'.
|
|
|
|
e. New bindable variable, `show-all-if-unmodified'. If set, the readline
|
|
completer will list possible completions immediately if there is more
|
|
than one completion and partial completion cannot be performed.
|
|
|
|
f. There is a new application-callable `free_history_entry()' function.
|
|
|
|
g. History list entries now contain timestamp information; the history file
|
|
functions know how to read and write timestamp information associated
|
|
with each entry.
|
|
|
|
h. Four new key binding functions have been added:
|
|
|
|
rl_bind_key_if_unbound()
|
|
rl_bind_key_if_unbound_in_map()
|
|
rl_bind_keyseq_if_unbound()
|
|
rl_bind_keyseq_if_unbound_in_map()
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.05b-release,
|
|
and the previous version, bash-2.05b-beta2.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed an off-by-one error in the function that translates job
|
|
specifications.
|
|
|
|
b. Note that we're running under Emacs and disable line editing if
|
|
$EMACS == `t'.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.05b-beta2,
|
|
and the previous version, bash-2.05b-beta1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed the /= and %= arithmetic operators to catch division by zero.
|
|
|
|
b. Added putenv, setenv, unsetenv to getenv replacement for completeness.
|
|
|
|
c. Fixed a bug that could cause the -O expand_aliases invocation option
|
|
to not take effect.
|
|
|
|
d. Fixed a problem with process substitution that resulted in incorrect
|
|
behavior when the number of process substitutions in an individual
|
|
command approached 64.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a problem with backward-char-search when on a system with support
|
|
for multibyte characters when running in a locale without any multibyte
|
|
characters.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.05b-beta1,
|
|
and the previous version, bash-2.05b-alpha1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a problem when parsing a POSIX.2 character class name while
|
|
evaluating a bracket expression containing multibyte characters.
|
|
|
|
b. Changed the help text for `bind' to make it clear that any command
|
|
that may be placed in ~/.inputrc is a valid argument to `bind'.
|
|
|
|
c. Added `help' builtin entries for `((', `[[', and arithmetic for.
|
|
|
|
d. malloc updated again:
|
|
o slightly better overflow and underflow detection by putting the
|
|
chunk size at the beginning and end of the chunk and making
|
|
sure they match in free/realloc
|
|
o partial page allocated to make things page-aligned no longer
|
|
completely wasted
|
|
o block coalescing now enabled by default
|
|
o splitting and coalescing enabled for 32-byte chunks, the most
|
|
common size requested
|
|
o fixed a problem that resulted in spurious underflow messages and
|
|
aborts
|
|
o bin sizes are precomputed and stored in an array rather than
|
|
being computed at run time
|
|
o malloc will return memory blocks back to the system if the block
|
|
being freed is at the top of the heap and of sufficient size to
|
|
make it worthwhile
|
|
o malloc/free/realloc now inline memset instead of calling the
|
|
libc function; uses Duff's device for good performance
|
|
|
|
e. Check for getservent(); make the service name completion code dependent
|
|
on its presence.
|
|
|
|
f. Changed the readline callback that executes a command bound to a key
|
|
sequence to not save the executed command on the history list and to
|
|
save and restore the parsing state.
|
|
|
|
g. Changes to lib/sh/snprintf.c: fixed some bugs in the `g' and `G'
|
|
floating point format display; implemented the "'" flag character
|
|
that turns on thousands' grouping; fixed behavior on systems where
|
|
MB_CUR_MAX does not evaluate to a constant.
|
|
|
|
h. The `unset' builtin no longer returns a failure status when asked to
|
|
unset a previously-unset variable or function.
|
|
|
|
i. Changes to the build system to make it easier to cross-compile bash
|
|
for different systems.
|
|
|
|
j. Added `,' to the characters that are backslash-escaped during filename
|
|
completion, to avoid problems with complete-into-braces and RCS filenames
|
|
containing commas.
|
|
|
|
k. Some changes to the multibyte character support code to avoid many calls
|
|
to strlen().
|
|
|
|
l. Bash now correctly honors setting LANG to some value when LC_ALL does not
|
|
already have a value.
|
|
|
|
m. Fixed a bug that could cause SIGSEGV when processing nested traps with
|
|
trap handlers.
|
|
|
|
n. The `source/.' builtin now restores the positional parameters when it
|
|
returns unless they were changed using the `set' builtin during the file's
|
|
execution.
|
|
|
|
o. Fixed a bug that caused a syntax error when a command was terminated by
|
|
EOF.
|
|
|
|
2. New Features in Bash
|
|
|
|
a. There is now support for placing the long help text into separate files
|
|
installed into ${datadir}/bash. Not enabled by default; can be turned
|
|
on with `--enable-separate-helpfiles' option to configure.
|
|
|
|
b. All builtins that take operands accept a `--' pseudo-option, except
|
|
`echo'.
|
|
|
|
c. The `echo' builtin now accepts \0xxx (zero to three octal digits following
|
|
the `0') in addition to \xxx (one to three octal digits) for SUSv3/XPG6/
|
|
POSIX.1-2001 compliance.
|
|
|
|
3. Changes to Readline
|
|
|
|
a. Fixed a small problem in _rl_insert_char with multibyte characters.
|
|
|
|
b. Fixes from IBM for line wrapping problems when using multibyte characters.
|
|
|
|
c. Fixed a problem which caused the display to be messed up when the last
|
|
line of a multi-line prompt (possibly containing invisible characters)
|
|
was longer than the screen width.
|
|
|
|
d. Fixed a problem with the vi-mode `r' command that ocurred on systems with
|
|
support for multibyte characters when running in a locale without any
|
|
multibyte characters.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.05b-alpha1,
|
|
and the previous version, bash-2.05a-release.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Some changes to work around inlining differences between compilers.
|
|
|
|
b. Added more prototypes for internal shell typedefs, to catch argument
|
|
passing errors when using pointers to functions.
|
|
|
|
c. The `cd' builtin now fails in posix mode when a valid directory cannot be
|
|
constructed from a relative pathname argument and the $PWD using pathname
|
|
canonicalization, and the -P option has not been supplied. Previously,
|
|
the shell would attempt to use what the user typed, leading to weird
|
|
values for $PWD and discrepancies between the value of $PWD and the
|
|
actual working directory.
|
|
|
|
d. The `cd' builtin now resets $PWD when canonicalization fails but a chdir
|
|
to the pathname passed as an argument succeeds (when not in posix mode).
|
|
|
|
e. The `fc' builtin has been fixed, as POSIX requires, to use the closest
|
|
history position in range when given an out-of-range argument.
|
|
|
|
f. The history file loading code was changed to allow lines to be saved in
|
|
the history list from the shell startup files.
|
|
|
|
g. `history -s args' now works better in compound commands.
|
|
|
|
h. The tilde expansion code was fixed to better recognize when it's being
|
|
invoked in an assignment context, which enables expansion after `='
|
|
and `:'.
|
|
|
|
i. Fixed the command name completion code so a slash is no longer appended
|
|
to a single match if there happens to be a directory with that name in
|
|
$PWD.
|
|
|
|
j. Fixed compound array assignment to no longer perform alias expansion, to
|
|
allow reserved words as array members, and to not produce extra output
|
|
when the `-v' option had been enabled.
|
|
|
|
k. Fixed the programmable completion code to better handle newlines in lists
|
|
of possible completions (e.g., `complete -W').
|
|
|
|
l. Removed the reserved words from the `bash-builtins' manual page.
|
|
|
|
m. Parser error reporting now attempts to do a better job of identifying the
|
|
token in error rather than doing straight textual analysis.
|
|
|
|
n. Fixes for Inf/NaN, locales, wide/multibyte characters and zero-length
|
|
arguments in the library snprintf(3) replacement.
|
|
|
|
o. `read -e' no longer does command name completion on the first word on
|
|
the line being read.
|
|
|
|
p. `select' now returns failure if the read of the user's selection fails.
|
|
|
|
q. Fixed a bug that could cause a core dump when setting $PIPESTATUS.
|
|
|
|
r. Fixes to not allocate so many job slots when the shell is running a loop
|
|
with job control enabled in a subshell of an interactive shell.
|
|
|
|
s. Fixed a bug in the trap code that caused traps to be inherited by
|
|
command substitutions in some cases.
|
|
|
|
t. Fixed a bug that could cause alias expansion to inappropriately expand
|
|
the word following the alias.
|
|
|
|
u. Fixed a bug in the `kill' builtin that mishandled negative pid arguments.
|
|
|
|
v. The parser is less lenient when parsing assignment statements where the
|
|
characters before the `=' don't comprise a valid identifier.
|
|
|
|
w. The arithmetic expression evaluation code now honors the setting of the
|
|
`-u' option when expanding variable names.
|
|
|
|
x. Fixed the arithmetic evaluation code to allow array subscripts to be
|
|
assigned (`let b[7]=42') and auto-incremented and auto-decremented
|
|
(e.g., b[7]++).
|
|
|
|
y. Reimplemented the existing prompt string date and time expansions using
|
|
strftime(3), which changed the output of \@ in some locales.
|
|
|
|
z. Fixed a bug that could cause a core dump when a special shell variable
|
|
(like RANDOM) was converted to an array with a variable assignment.
|
|
|
|
aa. Fixed a bug that would reset the handler for a signal the user had
|
|
trapped to a function that would exit the shell when setting the exit
|
|
trap in a non-interactive shell.
|
|
|
|
bb. Changed the execve(2) wrapper code to check whether or not a failing
|
|
command is a directory before looking at whether a `#!' interpreter
|
|
failed for some reason.
|
|
|
|
cc. Fixed a bug in the command printing code so it no longer inserts a `;'
|
|
after a newline, which produces a syntax error when reused as input.
|
|
|
|
dd. The code that expands $PS4 no longer inherits the `-x' flag.
|
|
|
|
ee. The bash-specific completion functions may now take advantage of the
|
|
double-TAB and M-? features of the standard readline completion
|
|
functions.
|
|
|
|
ff. The mail checking code no longer prints a message if the checked file's
|
|
size has not increased, even if the access time is less than the modification time.
|
|
|
|
gg. Rewrote the variable symbol table code: there is now a stack of
|
|
contexts, each possibly including a separate symbol table; there can
|
|
be more than one temporary environment supplied to nested invocations
|
|
of `./source'; the temporary environments no longer require so much
|
|
special-case code; shell functions now handle the temporary environment
|
|
and local variables more consistently; function scope exit is faster now
|
|
that the entire symbol table does not have to be traversed to dispose of
|
|
local variables; it is now easier to push vars from the temporary
|
|
environment to the shell's variable table in posix mode; some duplicated
|
|
code has been removed.
|
|
|
|
hh. Regularized the error message printing code; builtin_error is now called
|
|
more consistently, and common error message strings are handled by small
|
|
functions. This should make eventual message translation easier.
|
|
|
|
ii. Error messages now include the line number in a script when the shell
|
|
is not interactive.
|
|
|
|
jj. Array subscript expansion now takes place even when the array variable is
|
|
unset, so side effects will take place.
|
|
|
|
kk. Fixed a bug in the SICGHLD child-reaping code so that it won't find
|
|
jobs already marked as terminated if the OS reuses pids quickly enough.
|
|
|
|
ll. Fixed a bug that could cause a signal to not interrupt the `wait'
|
|
builtin while it was waiting for a background process to terminate.
|
|
|
|
mm. A couple of changes to make it easier for multiple shells to share history
|
|
files using `history -n', `history -r', and `history -w'.
|
|
|
|
nn. The `getopts' builtin always increments OPTIND to point to the next
|
|
option to be handled when an option is returned, whether it's valid
|
|
or not, as POSIX 1003.x-2001 requires.
|
|
|
|
oo. Changed some parts of the expansion code to avoid allocating and
|
|
immediately freeing memory without using the results for anything.
|
|
|
|
pp. The shell now keeps track of $IFS internally, updating its internal map
|
|
each time the variable is assigned a new value (or at local scope exit).
|
|
This saves thousands of hash lookups for IFS, which, while individually
|
|
cheap, add up.
|
|
|
|
qq. Rewrote the hash table code: searching and insertion are much faster now,
|
|
and it uses a better string hashing function; augmented the function
|
|
interface to simplify other parts of the code and remove duplicated code
|
|
|
|
rr. The shell now uses a simple, generic `object cache' for allocating and
|
|
caching words and word lists, which were the major users of
|
|
malloc/free.
|
|
|
|
ss. Fixed the assignment statement parsing code to allow whitespace and
|
|
newlines in subscripts when performing array element assignment.
|
|
|
|
tt. The shell now issues many fewer calls to sigprocmask and other signal
|
|
masking system calls.
|
|
|
|
uu. Fixed the `test' and conditional command file comparison operators to
|
|
work right when one file has a non-positive timestamp and the other
|
|
does not exist.
|
|
|
|
vv. Fixed some cases where the special characters '\001' and '\177' in the
|
|
values of variables or positional parameters caused incorrect expansion
|
|
results.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed output of comment-begin character when listing variable values.
|
|
|
|
b. Added some default key bindings for common escape sequences produced by
|
|
HOME and END keys.
|
|
|
|
c. Fixed the mark handling code to be more emacs-compatible.
|
|
|
|
d. A bug was fixed in the code that prints possible completions to keep it
|
|
from printing empty strings in certain circumstances.
|
|
|
|
e. Change the key sequence printing code to print ESC as M\- if ESC is a
|
|
meta-prefix character -- it's easier for users to understand than \e.
|
|
|
|
f. Fixed unstifle_history() to return values that match the documentation.
|
|
|
|
g. Fixed the event loop (rl_event_hook) to handle the case where the input
|
|
file descriptor is invalidated.
|
|
|
|
h. Fixed the prompt display code to work better when the application has a
|
|
custom redisplay function.
|
|
|
|
i. Changes to make reading and writing the history file a little faster, and
|
|
to cope with huge history files without calling abort(3) from xmalloc.
|
|
|
|
j. The vi-mode `S' and `s' commands are now undone correctly.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. If set, TMOUT is the default timeout for the `read' builtin.
|
|
|
|
b. `type' has two new options: `-f' suppresses shell function lookup, and
|
|
`-P' forces a $PATH search.
|
|
|
|
c. New code to handle multibyte characters.
|
|
|
|
d. `select' was changed to be more ksh-compatible, in that the menu is
|
|
reprinted each time through the loop only if REPLY is set to NULL.
|
|
The previous behavior is available as a compile-time option.
|
|
|
|
e. `complete -d' and `complete -o dirnames' now force a slash to be
|
|
appended to names which are symlinks to directories.
|
|
|
|
f. There is now a bindable edit-and-execute-command readline command,
|
|
like the vi-mode `v' command, bound to C-xC-e in emacs mode.
|
|
|
|
g. Added support for ksh93-like [:word:] character class in pattern matching.
|
|
|
|
h. The $'...' quoting construct now expands \cX to Control-X.
|
|
|
|
i. A new \D{...} prompt expansion; passes the `...' to strftime and inserts
|
|
the result into the expanded prompt.
|
|
|
|
j. The shell now performs arithmetic in the largest integer size the
|
|
machine supports (intmax_t), instead of long.
|
|
|
|
k. If a numeric argument is supplied to one of the bash globbing completion
|
|
functions, a `*' is appended to the word before expansion is attempted.
|
|
|
|
l. The bash globbing completion functions now allow completions to be listed
|
|
with double tabs or if `show-all-if-ambiguous' is set.
|
|
|
|
m. New `-o nospace' option for `complete' and `compgen' builtins; suppresses
|
|
readline's appending a space to the completed word.
|
|
|
|
n. New `here-string' redirection operator: <<< word.
|
|
|
|
o. When displaying variables, function attributes and definitions are shown
|
|
separately, allowing them to be re-used as input (attempting to re-use
|
|
the old output would result in syntax errors).
|
|
|
|
p. There is a new configuration option `--enable-mem-scramble', controls
|
|
bash malloc behavior of writing garbage characters into memory at
|
|
allocation and free time.
|
|
|
|
q. The `complete' and `compgen' builtins now have a new `-s/-A service'
|
|
option to complete on names from /etc/services.
|
|
|
|
r. `read' has a new `-u fd' option to read from a specified file descriptor.
|
|
|
|
s. Fix the completion code so that expansion errors in a directory name
|
|
don't cause a longjmp back to the command loop.
|
|
|
|
t. Fixed word completion inside command substitution to work a little more
|
|
intuitively.
|
|
|
|
u. The `printf' %q format specifier now uses $'...' quoting to print the
|
|
argument if it contains non-printing characters.
|
|
|
|
v. The `declare' and `typeset' builtins have a new `-t' option. When applied
|
|
to functions, it causes the DEBUG trap to be inherited by the named
|
|
function. Currently has no effect on variables.
|
|
|
|
w. The DEBUG trap is now run *before* simple commands, ((...)) commands,
|
|
[[...]] conditional commands, and for ((...)) loops.
|
|
|
|
x. The expansion of $LINENO inside a shell function is only relative to the
|
|
function start if the shell is interactive -- if the shell is running a
|
|
script, $LINENO expands to the line number in the script. This is as
|
|
POSIX-2001 requires.
|
|
|
|
y. The bash debugger in examples/bashdb has been modified to work with the
|
|
new DEBUG trap semantics, the command set has been made more gdb-like,
|
|
and the changes to $LINENO make debugging functions work better. Code
|
|
from Gary Vaughan.
|
|
|
|
z. New [n]<&word- and [n]>&word- redirections from ksh93 -- move fds (dup
|
|
and close).
|
|
|
|
aa. There is a new `-l' invocation option, equivalent to `--login'.
|
|
|
|
bb. The `hash' builtin has a new `-l' option to list contents in a reusable
|
|
format, and a `-d' option to remove a name from the hash table.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. Support for key `subsequences': allows, e.g., ESC and ESC-a to both
|
|
be bound to readline functions. Now the arrow keys may be used in vi
|
|
insert mode.
|
|
|
|
b. When listing completions, and the number of lines displayed is more than
|
|
the screen length, readline uses an internal pager to display the results.
|
|
This is controlled by the `page-completions' variable (default on).
|
|
|
|
c. New code to handle editing and displaying multibyte characters.
|
|
|
|
d. The behavior introduced in bash-2.05a of deciding whether or not to
|
|
append a slash to a completed name that is a symlink to a directory has
|
|
been made optional, controlled by the `mark-symlinked-directories'
|
|
variable (default is the 2.05a behavior).
|
|
|
|
e. The `insert-comment' command now acts as a toggle if given a numeric
|
|
argument: if the first characters on the line don't specify a
|
|
comment, insert one; if they do, delete the comment text
|
|
|
|
f. New application-settable completion variable:
|
|
rl_completion_mark_symlink_dirs, allows an application's completion
|
|
function to temporarily override the user's preference for appending
|
|
slashes to names which are symlinks to directories.
|
|
|
|
g. New function available to application completion functions:
|
|
rl_completion_mode, to tell how the completion function was invoked
|
|
and decide which argument to supply to rl_complete_internal (to list
|
|
completions, etc.).
|
|
|
|
h. Readline now has an overwrite mode, toggled by the `overwrite-mode'
|
|
bindable command, which could be bound to `Insert'.
|
|
|
|
i. New application-settable completion variable:
|
|
rl_completion_suppress_append, inhibits appending of
|
|
rl_completion_append_character to completed words.
|
|
|
|
j. New key bindings when reading an incremental search string: ^W yanks
|
|
the currently-matched word out of the current line into the search
|
|
string; ^Y yanks the rest of the current line into the search string,
|
|
DEL or ^H deletes characters from the search string.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.05a-release,
|
|
and the previous version, bash-2.05a-rc1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed the `printf' builtin so that the variable name supplied as an
|
|
argument to a %n conversion must be a valid shell identifier.
|
|
|
|
b. Improved the random number generator slightly.
|
|
|
|
c. Changes to configuration to not put -I/usr/include into $CFLAGS, since
|
|
it messes up some includes.
|
|
|
|
d. Corrected description of POSIXLY_CORRECT in man page and info manual.
|
|
|
|
e. Fixed a couple of cases of incorrect function prototypes that sneaked
|
|
through and caused compilation problems.
|
|
|
|
f. A few changes to avoid potential core dumps in the programmable completion
|
|
code.
|
|
|
|
g. Fixed a configure problem that could cause a non-existent file to show
|
|
up in LIBOBJS.
|
|
|
|
h. Fixed a configure problem that could cause siglist.o to not be built when
|
|
required.
|
|
|
|
i. Changes to the strtoimax and strtoumax replacement functions to work
|
|
around buggy compilers.
|
|
|
|
j. Fixed a problem with the snprintf replacement function that could
|
|
potentially cause a core dump.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a locale-specific problem in the vi-mode `goto mark' command.
|
|
|
|
b. Fixed Makefile to not put -I/usr/include into CFLAGS, since it can cause
|
|
include file problems.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.05a-rc1,
|
|
and the previous version, bash-2.05a-beta1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed the snprintf replacement to correctly implement the `alternate form'
|
|
of the %g and %G conversions.
|
|
|
|
b. Fixed snprintf to correctly handle the optional precision with the %g and
|
|
%G conversions.
|
|
|
|
c. Fixed the arithmetic evaluation code to correct the values of `@' and `_'
|
|
when translating base-64 constants (they were backwards).
|
|
|
|
d. New library functions for formatting long and long long ints.
|
|
|
|
e. Fixed a few places where negative array subscripts could have occurred,
|
|
mostly as the result of systems using signed characters.
|
|
|
|
f. Fixed a few places that assumed a pid_t was no wider than an int.
|
|
|
|
g. Fixed the `maildir' mail checking code to work on systems where a
|
|
`struct stat' doesn't include an `st_blocks' member.
|
|
|
|
h. Fixed snprintf to make `unsigned long long' conversion formats (%llu)
|
|
work better.
|
|
|
|
i. Fixed snprintf to not print a sign when asked to do an unsigned conversion.
|
|
|
|
j. Made configure changes to avoid compiling empty source files in lib/sh.
|
|
|
|
k. New replacement functions (if necessary) for strtoull, strtoll, strtoimax,
|
|
strtoumax.
|
|
|
|
l. The `printf' builtin now handles the `ll' and `j' length modifiers
|
|
directly, since they can affect the type and width of the argument
|
|
passed to printf(3).
|
|
|
|
m. Renamed a number of the bash-specific autoconf macros in aclocal.m4 to
|
|
have more sytematic naming, with accompanying changes to configure.in.
|
|
|
|
n. Fixed snprintf to handle long doubles and the %a/%A conversions by
|
|
falling back to sprintf, as long as sprintf supports them.
|
|
|
|
o. Fixed return value from vsnprintf/snprintf to be the number of characters
|
|
that would have been printed, even if that number exceeds the buffer
|
|
size passed as an argument.
|
|
|
|
p. Bash no longer attempts to define its own versions of some ctype macros
|
|
if they are implemented as functions in libc but not as macros in
|
|
<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.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. The select command was fixed to check the validity of the user's
|
|
input more strenuously.
|
|
|
|
b. A bug was fixed that prevented `time' from timing commands correctly
|
|
when supplied as an argument to `bash -c'.
|
|
|
|
c. A fix was made to the mail checking code to keep from adding the same
|
|
mail file to the list of files to check multiple times when parsing
|
|
$MAILPATH.
|
|
|
|
d. Fixed an off-by-one error in the tilde expansion library.
|
|
|
|
e. When using the compound array assignment syntax, the old value of
|
|
the array is cleared before assigning the new value.
|
|
|
|
f. Fixed a bug that could cause a core dump when a trap handler was reset
|
|
to the default in the trap command associated with that signal.
|
|
|
|
g. Fixed a bug in the locale code that occurred when assigning a value
|
|
to LC_ALL.
|
|
|
|
h. A change was made to the parser so that words of the form xxx=(...)
|
|
are not considered compound assignment statements unless there are
|
|
characters before the `='.
|
|
|
|
i. A fix was made to the command tracing code to correctly quote each
|
|
word of output.
|
|
|
|
j. Some changes were made to the bash-specific autoconf tests to make them
|
|
more portable.
|
|
|
|
k. Completion of words with globbing characters now correctly quotes the
|
|
result.
|
|
|
|
l. The directory /var/spool/mail is now preferred to /usr/spool/mail when
|
|
configure is deciding on the default mail directory.
|
|
|
|
m. The brace completion code was fixed to not quote the `{' and `}'.
|
|
|
|
n. Some fixes were made to make $RANDOM more random in subshells.
|
|
|
|
o. System-specific changes were made to configure for: SVR4.2
|
|
|
|
p. Changes were made so that completion of words containing globbing chars
|
|
substitutes the result only if a single filename was matched.
|
|
|
|
q. The window size is now recomputed after a job is stopped with SIGTSTP if
|
|
the user has set `checkwinsize' with `shopt'.
|
|
|
|
r. When doing substring expansion, out-of-range substring specifiers now
|
|
cause nothing to be substituted rather than an expansion error.
|
|
|
|
s. A fix was made so that you can no longer trap `SIGEXIT' or `SIGDEBUG' --
|
|
only `EXIT' and `DEBUG' are accepted.
|
|
|
|
t. The display of trapped signals now uses the signal number if signals
|
|
for which bash does not know the name are trapped.
|
|
|
|
u. A fix was made so that `bash -r' does not turn on restricted mode until
|
|
after the startup files are executed.
|
|
|
|
v. A bug was fixed that occasionally caused a core dump when a variable
|
|
found in the temporary environment of export/declare/readonly had a
|
|
null value.
|
|
|
|
w. A bug that occasionally caused unallocated memory to be passed to free()
|
|
when doing arithmetic substitution was fixed.
|
|
|
|
x. A bug that caused a buffer overrun when expanding a prompt string
|
|
containing `\w' and ${#PWD} exceeded PATH_MAX was fixed.
|
|
|
|
y. A problem with the completion code that occasionally caused it to
|
|
refer to a character before the beginning of the readline line buffer
|
|
was fixed.
|
|
|
|
z. A bug was fixed so that the `read' builtin restarts reads when
|
|
interrupted by signals other than SIGINT.
|
|
|
|
aa. Fixed a bug that caused a command to be freed twice when there was
|
|
an evaluation error in the `eval' command.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Added a missing `extern' to a declaration in readline.h that kept
|
|
readline from compiling cleanly on some systems.
|
|
|
|
b. The history file is now opened with mode 0600 when it is written for
|
|
better security.
|
|
|
|
c. Changes were made to the SIGWINCH handling code so that prompt redisplay
|
|
is done better.
|
|
|
|
d. ^G now interrupts incremental searches correctly.
|
|
|
|
e. A bug that caused a core dump when the set of characters to be quoted
|
|
when completing words was empty was fixed.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.01-release,
|
|
and the previous version, bash-2.01-beta2.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. The `distclean' target should remove the `printenv' executable if it
|
|
has been created.
|
|
|
|
b. The test suite was changed slightly to ensure that the error messages
|
|
are printed in English.
|
|
|
|
c. A bug that caused the shell to dump core when a filename containing a
|
|
`/' was passed to `hash' was fixed.
|
|
|
|
d. Pathname canonicalization now leaves a leading `//' intact, as POSIX.1
|
|
requires.
|
|
|
|
e. A memory leak when completing commands was fixed.
|
|
|
|
f. A memory leak that occurred when checking the hash table for commands
|
|
with relative paths was fixed.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.01-beta2,
|
|
and the previous version, bash-2.01-beta1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. The `ulimit' builtin translates RLIM_INFINITY to the hard limit only if
|
|
the current (soft) limit is less than or equal to the hard limit.
|
|
|
|
b. Fixed a bug that caused the bash emulation of strcasecmp to produce
|
|
incorrect results.
|
|
|
|
c. A bug that caused memory to be freed twice when a trap handler resets
|
|
the trap more than once was fixed.
|
|
|
|
d. A bug that caused machines where sizeof (pointer) > sizeof (int) to
|
|
fail (and possibly dump core) when trying to unwind-protect a null
|
|
pointer was fixed.
|
|
|
|
e. The startup files should not be run with job control enabled. This fix
|
|
allows SIGINT to once again interrupt startup file execution.
|
|
|
|
f. Bash should not change the SIGPROF handler if it is set to something
|
|
other than SIG_DFL.
|
|
|
|
g. The completion code that provides bash-specific completions for readline
|
|
now quotes characters that the readline code would treat as word break
|
|
characters if they appear in a file name.
|
|
|
|
h. The completion code now correctly quotes filenames containing a `!',
|
|
even if the user attempted to use double quotes when attempting
|
|
completion.
|
|
|
|
i. A bug that caused the shell to dump core when `disown' was called without
|
|
arguments and there was no current job was fixed.
|
|
|
|
j. A construct like $((foo);bar) is now processed as a command substitution
|
|
rather than as a bad arithmetic substitution.
|
|
|
|
k. A couple of bugs that caused `fc' to not obey the `cmdhist' and `lithist'
|
|
shell options when editing and re-executing a series of commands were
|
|
fixed.
|
|
|
|
l. A fix was made to the grammar -- the list of commands between `do' and
|
|
`done' in the body of a `for' command should be treated the same as a
|
|
while loop.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. A couple of bugs that caused the history search functions to attempt to
|
|
free a NULL pointer were fixed.
|
|
|
|
b. If the C library provides setlocale(3), readline does not need to look
|
|
at various environment variables to decide whether or not to go into
|
|
eight-bit mode automatically -- just check whether the current locale
|
|
is not `C' or `POSIX'.
|
|
|
|
c. If the filename completion function finds that a directory was not closed
|
|
by a previous (interrupted) completion, it closes the directory with
|
|
closedir().
|
|
|
|
3. New Features in Bash
|
|
|
|
a. New bindable readline commands: history-and-alias-expand-line and
|
|
alias-expand-line. The code was always in there, there was just no
|
|
way to execute it.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.01-beta1,
|
|
and the previous version, bash-2.01-alpha1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fixed a problem that could cause file descriptors used for process
|
|
substitution to conflict with those used explicitly in redirections.
|
|
|
|
b. Made it easier to regenerate configure if the user changes configure.in.
|
|
|
|
c. ${GROUPS[0]} should always be the primary group, even on systems without
|
|
multiple groups.
|
|
|
|
d. Spelling correction is no longer enabled by default.
|
|
|
|
e. Fixes to quoting problems in `bashbug'.
|
|
|
|
f. OS-specific configuration changes were made for: Irix 6.
|
|
|
|
g. OS-specific code changes were made for: QNX.
|
|
|
|
h. A more meaningful message is now printed when the file in /tmp for a
|
|
here document cannot be created.
|
|
|
|
i. Many changes to the shell's variable initialization code to speed
|
|
non-interactive startup.
|
|
|
|
j. Changes to the non-job-control code so that it does not try to open
|
|
/dev/tty.
|
|
|
|
k. The output of `set' and `export' is once again sorted, as POSIX wants.
|
|
|
|
l. Fixed a problem caused by a recursive call reparsing the value of
|
|
$SHELLOPTS.
|
|
|
|
m. The tilde code no longer calls getenv() when it's compiled as part of
|
|
the shell, which should eliminate problems on systems that cannot
|
|
redefine getenv(), like the NeXT OS.
|
|
|
|
n. Fixed a problem that caused `bash -o' or `bash +o' to not list all
|
|
the shell options.
|
|
|
|
o. Fixed `ulimit' to convert RLIM_INFINITY to the appropriate hard limit
|
|
only if the hard limit is greater than the current (soft) limit.
|
|
|
|
p. Fixed a problem that arose when building bash in a different directory
|
|
than the source and y.tab.[ch] were remade with something other than
|
|
bison. This came up most often on NetBSD.
|
|
|
|
q. Fixed a problem with completion -- it thought that `pwd`/[TAB] indicated
|
|
an unfinished command completion (`/), which generated errors.
|
|
|
|
r. The bash special tilde expansions (~-, ~+) are now attempted before
|
|
calling the standard tilde expansion code, which should eliminate the
|
|
problems people have been seeing with this on Solaris 2.5.1.
|
|
|
|
s. Added support for <stdarg.h> to places where it was missing.
|
|
|
|
t. Changed the code that reads the output of a command substitution to not
|
|
go through stdio. This reduces the memory requirements and is faster.
|
|
|
|
u. A number of changes to speed up export environment creation were made.
|
|
|
|
v. A number of memory leaks were fixed as the result of running the test
|
|
scripts through Purify.
|
|
|
|
w. Fixed a bug that caused subshells forked to interpret executable
|
|
scripts without a leading `#!' to not reinitialize the values of
|
|
the shell options.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. History library has less `#ifdef SHELL' code -- abstracted stuff out
|
|
into application-specific function hooks.
|
|
|
|
b. Readline no longer calls getenv() if it's compiled as part of the shell,
|
|
which should eliminate problems on systems that cannot redefine getenv(),
|
|
like the NeXT OS.
|
|
|
|
c. Fixed translation of ESC when `untranslating' macro values.
|
|
|
|
d. The region kill operation now fixes the mark if it ends up beyond the
|
|
boundaries of the line after the region is deleted.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. New argument for `configure': `--with-curses'. This can be used to
|
|
override the selection of the termcap library on systems where it is
|
|
deficient.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.01-alpha1,
|
|
and the previous version, bash-2.0-release.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. System-specific configuration changes for: FreeBSD, SunOS4, Irix,
|
|
MachTen, QNX 4.2, Harris Night Hawk, SunOS5.
|
|
|
|
b. System-specific code changes were made for: Linux, 4.4 BSD, QNX 4.2,
|
|
HP-UX, AIX 4.2.
|
|
|
|
c. A bug that caused the exec builtin to fail because the full pathname of
|
|
the command could not be found was fixed.
|
|
|
|
d. The code that performs output redirections is now more resistant to
|
|
race conditions and possible security exploits.
|
|
|
|
e. A bug that caused the shell to dump core when performing pattern
|
|
substitutions on variable values was fixed.
|
|
|
|
f. More hosts are now recognized by the auto-configuration mechanism
|
|
(OpenBSD, QNX, others).
|
|
|
|
g. Assignments to read-only variables that attempt to convert them to
|
|
arrays are now errors.
|
|
|
|
h. A bug that caused shell scripts using array assignments in POSIX mode
|
|
to exit after the assignment was performed was fixed.
|
|
|
|
i. The substring expansion code is now more careful about running off the
|
|
ends of the expanded variable value.
|
|
|
|
j. A bug that caused completion to fail if a backquoted command substitution
|
|
appeared anywhere on the line was fixed.
|
|
|
|
k. The `source' builtin no longer turns off history if it has been enabled
|
|
in a non-interactive shell.
|
|
|
|
l. A bug that caused the shell to crash when `disown' was given a pid
|
|
instead of a job number was fixed.
|
|
|
|
m. The `cd' spelling correction code will not try to change to `.' if no
|
|
directory entries match a single-character argument.
|
|
|
|
n. A bad variable name supplied to `declare', `export', or `readonly' no
|
|
longer causes a non-interactive shell in POSIX mode to exit.
|
|
|
|
o. Some fixes were made to the test suite to handle peculiarities of
|
|
various Unix versions.
|
|
|
|
p. The bash completion code now quotes characters that readline would
|
|
treat as word breaks for completion but are not shell metacharacters.
|
|
|
|
q. Bad options supplied at invocation now cause a usage message to be
|
|
displayed.
|
|
|
|
r. Fixes were made to the code that handles DEBUG traps so that the trap
|
|
string is not freed inappropriately.
|
|
|
|
s. Some changes were made to the bash debugger in examples/bashdb -- it
|
|
should be closer to working now.
|
|
|
|
t. A problem that caused the default filename used for mail checking to be
|
|
wrong was fixed.
|
|
|
|
u. A fix was made to the `echo' builtin so that NUL characters printed with
|
|
`echo -e' do not cause the output to be truncated.
|
|
|
|
v. A fix was made to the job control code so that the shell behaves better
|
|
when monitor mode is enabled in a non-interactive shell.
|
|
|
|
w. Bash no longer catches all of the terminating signals in a non-
|
|
interactive shell until a trap is set on EXIT, which should result in
|
|
quicker startup.
|
|
|
|
x. A fix was made to the command timing code so that `time' can be used in
|
|
a loop.
|
|
|
|
y. A fix was made to the parser so that `((cmd); cmd2)' is now parsed as
|
|
a nested subshell rather than strictly as an (erroneous) arithmetic
|
|
command.
|
|
|
|
z. A fix was made to the globbing code so that it correctly matches quoted
|
|
filenames beginning with a `.'.
|
|
|
|
aa. A bug in `fc' that caused some multi-line commands to not be stored as
|
|
one command in the history when they were re-executed after editing
|
|
(with `fc -e') was fixed.
|
|
|
|
bb. The `ulimit' builtin now attempts to catch some classes of integer
|
|
overflows.
|
|
|
|
cc. The command-oriented-history code no longer attempts to add `;'
|
|
inappropriately when a newline appears while reading a $(...) command
|
|
substitution.
|
|
|
|
dd. A bug that caused the shell to dump core when `help --' was executed
|
|
was fixed.
|
|
|
|
ee. A bug that caused the shell to crash when an unset variable appeared
|
|
in the body of a here document after `set -u' had been executed was
|
|
fixed.
|
|
|
|
ff. Implicit input redirections from /dev/null for asynchronous commands
|
|
are now handled better.
|
|
|
|
gg. A bug that caused the shell to fail to compile when configured with
|
|
`--disable-readline' was fixed.
|
|
|
|
hh. The globbing code should now be interruptible.
|
|
|
|
ii. Bash now notices when the `kill' builtin is used to send SIGCONT to a
|
|
stopped job and adjusts the data structures accordingly, as if `bg' had
|
|
been executed instead.
|
|
|
|
jj. A bug that caused the shell to crash when mixing calls to `getopts'
|
|
and `shift' on the same set of positional parameters was fixed.
|
|
|
|
kk. The command printing code now preserves the `-p' flag to `time'.
|
|
|
|
ll. The command printing code now handles here documents better when there
|
|
are other redirections associated with the command.
|
|
|
|
mm. The special glibc environment variable (NNN_GNU_nonoption_argv_flags_)
|
|
is no longer placed into the environment of executed commands -- users
|
|
of glibc had too many problems with it.
|
|
|
|
nn. Reorganized the code that generates signames.h. The signal_names list
|
|
is now more complete but may be slightly different (SIGABRT is favored
|
|
over SIGIOT, for example). The preferred signal names are those
|
|
listed in the POSIX.2 standard.
|
|
|
|
oo. `bashbug' now uses a filename shorter than 14 characters for its
|
|
temporary file, and asks for confirmation before sending the bug
|
|
report.
|
|
|
|
pp. A bug that caused TAB completion in vi editing mode to not be turned
|
|
off when `set -o posix' was executed or back on when `set +o posix'
|
|
was executed was fixed.
|
|
|
|
qq. A bug in the brace expansion code that caused brace expansions appearing
|
|
in new-style $(...) command substitutions to be inappropriately expanded
|
|
was fixed.
|
|
|
|
rr. A bug in the readline hook shell-expand-line that could cause memory to
|
|
be inappropriately freed was fixed.
|
|
|
|
ss. A bug that caused some arithmetic expressions containing `&&' and `||'
|
|
to be parsed with the wrong precedence has been fixed.
|
|
|
|
tt. References to unbound variables after `set -u' has been executed now
|
|
cause the shell to exit immediately, as they should.
|
|
|
|
uu. A bug that caused the shell to exit inappropriately when `set -e' had
|
|
been executed and a command's return status was being inverted with the
|
|
`!' reserved word was fixed.
|
|
|
|
vv. A bug that could occasionally cause the shell to crash with a
|
|
divide-by-zero error when timing a command was fixed.
|
|
|
|
ww. A bug that caused parameter pattern substitution to leave stray
|
|
backslashes in the replacement string when the expression is in
|
|
double quotes was fixed.
|
|
|
|
xx. The `break' and `continue' builtins now break out of all loops when an
|
|
invalid count argument is supplied.
|
|
|
|
yy. Fixed a bug that caused PATH to be set to the empty string if
|
|
`command -p' is executed with PATH unset.
|
|
|
|
zz. Fixed `kill -l signum' to print the signal name without the `SIG' prefix,
|
|
as POSIX specifies.
|
|
|
|
aaa. Fixed a bug that caused the shell to crash while setting $SHELLOPTS
|
|
if there were no shell options set.
|
|
|
|
bbb. Fixed `export -p' and `readonly -p' so that when the shell is in POSIX
|
|
mode, their output is as POSIX.2 specifies.
|
|
|
|
ccc. Fixed a bug in `readonly' so that `readonly -a avar=(...)' actually
|
|
creates an array variable.
|
|
|
|
ddd. Fixed a bug that prevented `time' from correctly timing background
|
|
pipelines.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. A bug that caused an extra newline to be printed when the cursor was on
|
|
an otherwise empty line was fixed.
|
|
|
|
b. An instance of memory being used after it was freed was corrected.
|
|
|
|
c. The redisplay code now works when the prompt is longer than the screen
|
|
width.
|
|
|
|
d. `dump-macros' is now a bindable name, as it should have been all along.
|
|
|
|
e. Non-printable characters are now expanded when displaying macros and
|
|
their values.
|
|
|
|
f. The `dump-variables' and `dump-macros' commands now output a leading
|
|
newline if they're called as the result of a key sequence, rather
|
|
than directly by an application.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. There is a new builtin array variable: GROUPS, the set of groups to which
|
|
the user belongs. This is used by the test suite.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. If a key sequence bound to `universal-argument' is read while reading a
|
|
numeric argument started with `universal-argument', it terminates the
|
|
argument but is otherwise ignored. This provides a way to insert multiple
|
|
instances of a digit string, and is how GNU emacs does it.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.0-release,
|
|
and the previous version, bash-2.0-beta3.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Fix to the `getopts' builtin so that it does the right thing when a
|
|
required option argument is not present.
|
|
|
|
b. The completion code now updates the common prefix of matched names
|
|
after FIGNORE processing is done, since any names that were removed
|
|
may have changed the common prefix.
|
|
|
|
c. Fixed a bug that made messages in MAILPATH entries not work correctly.
|
|
|
|
d. Fixed a serious documentation error in the description of the new
|
|
${parameter:offset[:length]} expansion.
|
|
|
|
e. Fixes to make parameter substring expansion ({$param:offset[:length]})
|
|
work when within double quotes.
|
|
|
|
f. Fixes to make ^A (CTLESC) survive an unquoted expansion of positional
|
|
parameters.
|
|
|
|
g. Corrected a misspelling of `unlimited' in the output of `ulimit'.
|
|
|
|
h. Fixed a bug that caused executable scripts without a leading `#!' to
|
|
occasionally pick up the wrong set of positional parameters.
|
|
|
|
i. Linux systems now have a working `ulimit -v', using RLIMIT_AS.
|
|
|
|
j. Updated config.guess so that many more machine types are recognized.
|
|
|
|
k. Fixed a bug with backslash-quoted slashes in the ${param/pat[/sub]}
|
|
expansion.
|
|
|
|
l. If the shell is named `-su', and `-c command' is supplied, read and
|
|
execute the login shell startup files even though the shell is not
|
|
interactive. This is to support the `-' option to `su'.
|
|
|
|
m. Fixed a bug that caused core dumps when the DEBUG trap was ignored
|
|
with `trap "" DEBUG' and a shell function was subsequently executed.
|
|
|
|
n. Fixed a bug that caused core dumps in the read builtin when IFS was
|
|
set to the null string and the input had leading whitespace.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a bug that caused a numeric argument of 1024 to be ignored when
|
|
inserting text.
|
|
|
|
b. Fixed the display code so that the numeric argument is displayed as it's
|
|
being entered.
|
|
|
|
c. Fixed the numeric argument reading code so that `M-- command' is
|
|
equivalent to `M--1 command', as the prompt implies.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. `ulimit' now sets both hard and soft limits and reports the soft limit
|
|
by default (when neither -H nor -S is specified). This is compatible
|
|
with versions of sh and ksh that implement `ulimit'.
|
|
|
|
b. Integer constants have been extended to base 64.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. The `home' and `end' keys are now bound to beginning-of-line and
|
|
end-of-line, respectively, if the corresponding termcap capabilities
|
|
are present.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.0-beta3,
|
|
and the previous version, bash-2.0-beta2.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. System-specific changes for: AIX 4.2, SCO 3.2v[45], HP-UX.
|
|
|
|
b. When in POSIX mode, variable assignments preceding a special builtin
|
|
persist in the shell environment after the builtin completes.
|
|
|
|
c. Changed all calls to getwd() to getcwd(). Improved check for systems
|
|
where the libc getcwd() calls popen(), since that breaks on some
|
|
systems when job control is being used.
|
|
|
|
d. Fixed a bug that caused seg faults when executing scripts with the
|
|
execute bit set but without a leading `#!'.
|
|
|
|
e. The environment passed to executed commands is never sorted.
|
|
|
|
f. A bug was fixed in the code that expands ${name[@]} to the number of
|
|
elements in an array variable.
|
|
|
|
g. A bug was fixed in the array compound assignment code ( A=( ... ) ).
|
|
|
|
h. Window size changes now correctly propagate down to readline if
|
|
the shopt `checkwinsize' option is enabled.
|
|
|
|
i. A fix was made in the code that expands to the length of a variable
|
|
value (${#var}).
|
|
|
|
j. A fix was made to the command builtin so that it did not turn on the
|
|
`no fork' flag inappropriately.
|
|
|
|
k. A fix was made to make `set -n' work more reliably.
|
|
|
|
l. A fix was made to the job control initialization code so that the
|
|
terminal process group is set to the shell's process group if the
|
|
shell changes its own process group.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. System-specific changes for: SCO 3.2v[45].
|
|
|
|
b. The behavior of the vi-mode `.' when redoing an `i' command was changed
|
|
to insert the text previously inserted by the `i' command rather than
|
|
simply entering insert mode.
|
|
|
|
3. New features in Bash
|
|
|
|
a. There is a new version of the autoload function package, in
|
|
examples/functions/autoload.v2, that uses arrays and provides more
|
|
functionality.
|
|
|
|
b. Support for LC_COLLATE and locale-specific sorting of the results of
|
|
pathname expansion if strcoll() is available.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. Support for locale-specific sorting of completion possibilities if
|
|
strcoll() is available.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.0-beta2,
|
|
and the previous version, bash-2.0-beta1.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. `pushd -' is once again equivalent to `pushd $OLDPWD'.
|
|
|
|
b. OS-specific changes for: SCO 3.2v[45].
|
|
|
|
c. A change was made to the fix for the recently-reported security hole
|
|
when reading characters with octal value 255 to make it work better on
|
|
systems with restartable system calls when not using readline.
|
|
|
|
d. Some changes were made to the test suite so that it works if you
|
|
configure bash with --enable-usg-echo-default.
|
|
|
|
e. A fix was made to the parsing of conditional arithmetic expressions.
|
|
|
|
f. Illegal arithmetic bases now cause an arithmetic evaluation error rather
|
|
than being silently reset.
|
|
|
|
g. Multiple arithmetic bases now cause an arithmetic evaluation error
|
|
instead of being ignored.
|
|
|
|
h. A fix was made to the evaluation of ${param?word} to conform to POSIX.2.
|
|
|
|
i. A bug that sometimes caused array indices to be evaluated twice (which
|
|
would cause errors when they contained assignment statements) was fixed.
|
|
|
|
j. `ulimit' was rewritten to avoid problems with getrlimit(2) returning
|
|
unsigned values and to simplify the code.
|
|
|
|
k. A bug in the command-oriented-history code that caused it to sometimes
|
|
put semicolons after right parens inappropriately was fixed.
|
|
|
|
l. The values inserted into the prompt by the \w and \W escape sequences
|
|
are now quoted to prevent further expansion.
|
|
|
|
m. An interactive shell invoked as `sh' now reads and executes commands
|
|
from the file named by $ENV when it starts up. If it's a login shell,
|
|
it does this after reading /etc/profile and ~/.profile.
|
|
|
|
n. The file named by $ENV is never read by non-interactive shells.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. A few changes were made to hide some macros and functions that should not
|
|
be public.
|
|
|
|
b. An off-by-one error that caused seg faults in the history expansion code
|
|
was fixed.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. The ksh-style ((...)) arithmetic command was implemented. It is exactly
|
|
identical to let "...". This is controlled by a new option to configure,
|
|
`--enable-dparen-arithmetic', which is on by default.
|
|
|
|
b. There is a new #define available in config.h.top: SYS_BASH_LOGOUT. If
|
|
defined to a filename, bash reads and executes commands from that file
|
|
when a login shell exits. It's commented out by default.
|
|
|
|
c. `ulimit' has a `-l' option that reports the maximum amount of data that
|
|
may be locked into memory on 4.4BSD-based systems.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.0-beta1,
|
|
and the previous version, bash-2.0-alpha4.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. A bug that sometimes caused traps to be ignored on signals the
|
|
shell treats specially was fixed.
|
|
|
|
b. The internationalization code was changed to track the values of
|
|
LC_* variables and call setlocale() as appropriate. The TEXTDOMAIN
|
|
and TEXTDOMAINDIR variables are also tracked; changes cause calls
|
|
to textdomain() and bindtextdomain(), if available.
|
|
|
|
c. A bug was fixed that sometimes caused double-quoted strings to be
|
|
parsed incorrectly.
|
|
|
|
d. Changes were made so that the siglist code compiles correctly on
|
|
Solaris 2.5.
|
|
|
|
e. Added `:' to the set of characters that cause word breaks for the
|
|
completion code so that pathnames in assignments to $PATH can be
|
|
completed.
|
|
|
|
f. The `select' command was fixed to print $PS3 to stderr.
|
|
|
|
g. Fixed an error in the manual page section describing the effect that
|
|
setting and unsetting GLOBIGNORE has on the setting of the `dotglob'
|
|
option.
|
|
|
|
h. The time conversion code now uses CLK_TCK rather than CLOCKS_PER_SEC
|
|
on systems without gettimeofday() and resources.
|
|
|
|
i. The getopt static variables are now initialized each time a subshell
|
|
is started, so subshells using `getopts' work right.
|
|
|
|
j. A sign-extension bug that caused a possible security hole was fixed.
|
|
|
|
k. The parser now reads characters between backquotes within a double-
|
|
quoted string as a single word, so double quotes in the backquoted
|
|
string don't terminate the enclosing double-quoted string.
|
|
|
|
l. A bug that caused `^O' to work incorrectly when typed as the first
|
|
thing to an interactive shell was fixed.
|
|
|
|
m. A rarely-exercised off-by-one error in the code that quotes variable
|
|
values was fixed.
|
|
|
|
n. Some memory and file descriptor leaks encountered when running a
|
|
shell script that is executable but does not have a leading `#!'
|
|
were plugged.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. A bug that sometimes caused incorrect results when trying to read
|
|
typeahead on systems without FIONREAD was fixed.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. The command timing code now uses the value of the TIMEFORMAT variable
|
|
to format and display timing statistics.
|
|
|
|
b. The `time' reserved word now accepts a `-p' option to force the
|
|
POSIX.2 output format.
|
|
|
|
c. There are a couple of new and updated scripts to convert csh startup
|
|
files to bash format.
|
|
|
|
d. There is a new builtin array variable: BASH_VERSINFO. The various
|
|
members hold the parts of the version information in BASH_VERSION,
|
|
plus the value of MACHTYPE.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. Setting LANG to `en_US.ISO8859-1' now causes readline to enter
|
|
eight-bit mode.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.0-alpha4,
|
|
and the previous version, bash-2.0-alpha3.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. There is better detection of rsh connections on Solaris 2.
|
|
|
|
b. Assignments to read-only variables preceding a command name are now
|
|
variable assignment errors. Variable assignment errors cause
|
|
non-interactive shells running in posix mode to exit.
|
|
|
|
c. The word tokenizer was rewritten to handle nested quotes and pairs
|
|
('', "", ``, ${...}, $(...), $[...], $'...', $"...", <(...), >(...))
|
|
correctly. Some of the parameter expansion code was updated as a
|
|
consequence.
|
|
|
|
d. A fix was made to `test' when given three arguments so that a binary
|
|
operator is checked for first, before checking that the first argument
|
|
is `!'.
|
|
|
|
e. 2''>/dev/null is no longer equivalent to 2>/dev/null.
|
|
|
|
f. Parser error messages were regularized, and in most cases the name of
|
|
the shell script being read by a non-interactive shell is not printed
|
|
twice.
|
|
|
|
g. A fix was made to the completion code so that it no longer removes the
|
|
text the user typed in some cases.
|
|
|
|
h. The special glibc `getopt' environment variable is no longer put into
|
|
the environment on machines with small values of ARG_MAX.
|
|
|
|
i. The expansion of ${...} now follows the POSIX.2 rules for finding the
|
|
closing `}'.
|
|
|
|
j. The shell no longer displays spurious status messages for background
|
|
jobs in shell scripts that complete successfully when the script is
|
|
run from a terminal.
|
|
|
|
k. `shopt -o' now correctly updates $SHELLOPTS.
|
|
|
|
l. A bug that caused the $PATH searching code to return a non-executable
|
|
file even when an executable file with the same name appeared later in
|
|
$PATH was fixed.
|
|
|
|
m. The shell now does tilde expansions on unquoted `:~' in assignment
|
|
statements when not in posix mode.
|
|
|
|
n. Variable assignment errors when a command consists only of assignments
|
|
now cause non-interactive shells to exit when in posix mode.
|
|
|
|
o. If the variable in a `for' or `select' command is read-only, or not a
|
|
legal shell identifier, a variable assignment error occurs.
|
|
|
|
p. `test' now handles `-a' and `-o' as binary operators when three arguments
|
|
are supplied, and correctly parses `( word )' as equivalent to `word'.
|
|
|
|
q. `test' was fixed so that file names of the form /dev/fd/NN mean the same
|
|
thing on all systems, even Linux.
|
|
|
|
r. Fixed a bug in the globbing code that caused patterns with multiple
|
|
consecutive `*'s to not be matched correctly.
|
|
|
|
s. Fixed a bug that caused $PS2 to not be printed when an interactive shell
|
|
not using readline is reading a here document.
|
|
|
|
t. Fixed a bug that caused history expansion to be performed inappropriately
|
|
when a single-quoted string spanned more than one line.
|
|
|
|
u. `getopts' now checks that the variable name passed by the user as the
|
|
second argument is a legal shell identifier and that the variable is
|
|
not read-only.
|
|
|
|
v. Fixed `getopts' to obey POSIX.2 rules for setting $OPTIND when it
|
|
encounters an error.
|
|
|
|
w. Fixed `set' to display variable values in a form that can be re-read.
|
|
|
|
x. Fixed a bug in the code that keeps track of whether or not local variables
|
|
have been declared at the current level of function nesting.
|
|
|
|
y. Non-interactive shells in posix mode now exit if the name in a function
|
|
declaration is not a legal identifier.
|
|
|
|
z. The job control code now ignores stopped children when the shell is not
|
|
interactive.
|
|
|
|
aa. The `cd' builtin no longer attempts spelling correction on the directory
|
|
name if the shell is not interactive, regardless of the setting of the
|
|
`cdspell' option.
|
|
|
|
bb. Some OS-specific changes were made for SCO 3.2v[45] and AIX 4.2.
|
|
|
|
cc. `time' now prints its output to stderr, as POSIX.2 specifies.
|
|
|
|
2. Fixes to Readline
|
|
|
|
a. After printing possible completions, all lines of a multi-line prompt
|
|
are redisplayed.
|
|
|
|
b. Some changes were made to the terminal handling code in rltty.c to
|
|
work around AIX 4.2 bugs.
|
|
|
|
3. New Features in Bash
|
|
|
|
a. There is a new loadable builtin: sprintf, with calling syntax
|
|
sprintf var format [args]
|
|
This provides an easy way to simulate ksh left- and right-justified
|
|
variable values.
|
|
|
|
b. The expansions of \h and \H in prompt strings were swapped. \h now
|
|
expands to the hostname up to the first `.', as in bash-1.14.
|
|
|
|
4. New Features in Readline
|
|
|
|
a. The bash-1.14 behavior when ^M is typed while doing an incremental
|
|
search was restored. ^J may now be used to terminate the search without
|
|
accepting the line.
|
|
|
|
b. There is a new bindable variable: disable-completion. This inhibits
|
|
word completion and causes the completion character to be inserted as
|
|
if it had been bound to self-insert.
|
|
|
|
------------------------------------------------------------------------------
|
|
This document details the changes between this version, bash-2.0-alpha3,
|
|
and the previous version, bash-2.0-alpha2.
|
|
|
|
There is now a file `COMPAT' included in the distribution that lists the
|
|
user-visible incompatibilities between 1.14 and 2.0.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. Some work was done so that word splitting of the rhs of assignment
|
|
statements conforms more closely to historical practice.
|
|
|
|
b. A couple of errant memory frees were fixed.
|
|
|
|
c. A fix was made to the test builtin so it recognizes `<' and `>' as
|
|
binary operators.
|
|
|
|
d. The GNU malloc in lib/malloc/malloc.c now scrambles memory as it's
|
|
allocated and freed. This is to catch callers that refer to freed
|
|
memory or assume something about newly-allocated memory.
|
|
|
|
e. Fixed a problem with conversion to 12-hour time in the prompt
|
|
expansion code.
|
|
|
|
f. Fixed a problem with configure's argument parsing order. Now you can
|
|
correctly turn on specific options after using --enable-minimal-config.
|
|
|
|
g. The configure script now automatically disables the use of GNU malloc
|
|
on systems where it's appropriate (better than having people read the
|
|
NOTES file and do it manually).
|
|
|
|
h. There are new prompt expansions (\v and \V) to insert version information
|
|
into the prompt strings.
|
|
|
|
i. The default prompt string now includes the version number.
|
|
|
|
j. Most of the builtins that take no options were changed to use the
|
|
internal getopt so they can produce proper error messages for -?
|
|
and incorrect options.
|
|
|
|
k. Some system-specific changes were made for SVR4.2 and Solaris 2.5.
|
|
|
|
l. Bash now uses PATH_MAX instead of MAXPATHLEN and NAME_MAX instead of
|
|
MAXNAMLEN.
|
|
|
|
m. A couple of problems caused by uninitialized variables were fixed.
|
|
|
|
n. There are a number of new loadable builtin examples: logname, basename,
|
|
dirname, tty, pathchk, tee, head, and rmdir. All of these conform to
|
|
POSIX.2.
|
|
|
|
o. Bash now notices changes in TZ and calls tzset() if present, so
|
|
changing TZ will alter the time printed by prompt expansions.
|
|
|
|
p. The source was reorganized a bit so I don't have to wait so long for
|
|
some files to compile, and to facilitate the creation of a `shell
|
|
library' at some future point.
|
|
|
|
q. Bash no longer turns off job control if called as `sh', since the
|
|
POSIX.2 spec includes job control as a standard feature.
|
|
|
|
r. `bash -o posix' now works as intended.
|
|
|
|
s. Fixed a problem with the completion code: when completing a filename
|
|
that contained globbing characters, if show-all-if-ambiguous was set,
|
|
the completion code would remove the user's text.
|
|
|
|
t. Fixed ulimit so that (hopefully) the full range of limits is available
|
|
on HPUX systems.
|
|
|
|
u. A new `shopt' option (`hostcomplete') enables and disables hostname
|
|
completion.
|
|
|
|
v. The shell no longer attempts to save the history on an abort(),
|
|
which is usually called by programming_error().
|
|
|
|
w. The `-s' option to `fc' was changed to echo the command to be executed
|
|
to stderr instead of stdout.
|
|
|
|
x. If the editor invoked by `fc -e' exits with a non-zero status, no
|
|
commands are executed.
|
|
|
|
y. Fixed a bug that made the shopt `histverify' option work incorrectly.
|
|
|
|
z. There is a new variable `MACHTYPE' whose value is the GNU-style
|
|
`cpu-company-system' system description as set by configure. (The
|
|
values of MACHTYPE and HOSTTYPE should really be swapped.)
|
|
|
|
aa. The `ulimit' builtin now allows the maximum virtual memory size to be
|
|
set via setrlimit(2) if RLIMIT_VMEM is defined.
|
|
|
|
bb. `bash -nc 'command'' no longer runs `command'.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. Fixed a typo in the code that checked for FIONREAD in input.c.
|
|
|
|
b. Fixed a bug in the code that outputs keybindings, so things like C-\
|
|
are quoted properly.
|
|
|
|
c. Fixed a bug in the inputrc file parsing code to handle the problems
|
|
caused by inputrc files created from the output of `bind -p' in
|
|
previous versions of bash. The problem was due to the bug fixed
|
|
in item b above.
|
|
|
|
d. Readline no longer turns off the terminal's meta key, and turns it on
|
|
once the first time it's called.
|
|
|
|
------------------------------------------------------------------------------
|
|
This file documents the changes between this version, bash-2.0-alpha2,
|
|
and the previous version, bash-2.0-alpha.
|
|
|
|
1. Changes to Bash
|
|
|
|
a. The shell no longer thinks directories are executable.
|
|
|
|
b. `disown' has a new option, `h', which inhibits the resending of SIGHUP
|
|
but does not remove the job from the jobs table.
|
|
|
|
c. The varargs functions in error.c now use ANSI-C `stdarg' if available.
|
|
|
|
d. The build process now treats the `build version' in .build as local to
|
|
the build directory, so different versions built from the same source
|
|
tree have different `build versions'.
|
|
|
|
e. Some problems with the grammar have been fixed. (It used `list' in a few
|
|
productions where `compound_list' was needed. A `list' must be terminated
|
|
with a newline or semicolon; a `compound_list' need not be.)
|
|
|
|
f. A fix was made to keep `wait' from hanging when waiting for all background
|
|
jobs.
|
|
|
|
g. `bash --help' now writes its output to stdout, like the GNU Coding Standards
|
|
specify, and includes the machine type (the value of MACHTYPE).
|
|
|
|
h. `bash --version' now prints more information and exits successfully, like
|
|
the GNU Coding Standards specify.
|
|
|
|
i. The output of `time' and `times' now prints fractional seconds with three
|
|
places after the decimal point.
|
|
|
|
j. A bug that caused process substitutions to screw up the pipeline printed
|
|
by `jobs' was fixed.
|
|
|
|
k. Fixes were made to the code that implements $'...' and $"..." so they
|
|
work as documented.
|
|
|
|
l. The process substitution code now opens named pipes for reading with
|
|
O_NONBLOCK to avoid hanging.
|
|
|
|
m. Fixes were made to the trap code so the shell cleans up correctly if the
|
|
trap command contains a `return' and we're executing a function or
|
|
sourcing a script with `.'.
|
|
|
|
n. Fixes to doc/Makefile.in so that it doesn't try to remake all of the
|
|
documentation (ps, dvi, etc.) on a `make install'.
|
|
|
|
o. Fixed an auto-increment error that caused bash -c args to sometimes dump
|
|
core.
|
|
|
|
p. Fixed a bug that caused $HISTIGNORE to fail when the history line
|
|
contained globbing characters.
|
|
|
|
2. Changes to Readline
|
|
|
|
a. There is a new string variable, rl_library_version, available for use by
|
|
applications. The current value is "2.1".
|
|
|
|
b. A bug encountered when expand-tilde was enabled and file completion was
|
|
attempted on a word beginning with `~/' was fixed.
|
|
|
|
c. A slight change was made to the incremental search termination behavior.
|
|
ESC still terminates the search, but if input is pending or arrives
|
|
within 0.1 seconds (on systems with select(2)), it is used as a prefix
|
|
character. This is intented to allow users to terminate searches with
|
|
the arrow keys and get the behavior they expect.
|