Imported from ../bash-2.05.tar.gz.
This commit is contained in:
Jari Aalto
parent
bb70624e96
commit
28ef6c316f
251 changed files with 22319 additions and 12413 deletions
558
CHANGES
558
CHANGES
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@ -1,3 +1,559 @@
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This document details the changes between this version, bash-2.05-release,
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and the previous version, bash-2.05-beta2.
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1. Changes to Bash
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a. Make sure we note that the first line of a multi-line command was not
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saved in the history if the tests for HISTCONTROL succeed, but the
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HISTIGNORE check fails.
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b. Fixed a bug in the pattern matching code that caused `[' to be treated
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as a special character inside a `[...]' bracket expression.
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c. Fixed a bug in the pattern matching code that caused `]' to terminate
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a bracket expression even if it was the first character after the `['
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(or a leading `!' or `^').
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d. Made a small change to report a more user-friendly error message if
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execve(2) fails because of an error with the interpreter in a script
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with a leading `#! interpreter'.
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e. If the OS does not support an exec(2) magic number of `#!', make sure we
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have a non-null interpreter name before attempting to execute it.
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f. Fixed a bug that caused the shell process to end up in a different
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process group than the controlling terminal if a job-control shell was
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run with `exec' in the startup files.
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g. When started in POSIX mode, either by `bash --posix', `bash -o posix', or
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`sh', $SHELLOPTS includes `posix' and POSIXLY_CORRECT is set.
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h. Fixed a problem that caused the `\W' prompt string escape sequence to
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expand to nothing when $PWD was `//'.
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i. The `bashbug' shell script no longer uses $(...) command substitution.
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j. When `set' is invoked without options in POSIX mode, it no longer prints
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the names and definitions of shell functions.
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2. Changes to Readline
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||||
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a. rl_set_paren_blink_timeout() is now documented.
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b. Corrected history.3 man page: `$' is not in the default value of
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history_word_delimiters.
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c. If a hook function assigned to rl_event_hook sets rl_done to a non-zero
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value, rl_read_key() now immediately returns '\n' (which is assumed to
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be bound to accept-line).
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3. New Features in Bash
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a. The `>&word' redirection now works in POSIX mode as it does by default,
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since POSIX.2 leaves it unspecified.
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------------------------------------------------------------------------------
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This document details the changes between this version, bash-2.05-beta2,
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and the previous version, bash-2.05-beta1.
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1. Changes to Bash
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a. Fixed a bug in the arithmetic evaluation code so that a^=b is supported.
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b. Fixed startup so posixly_correct is retained across subshells begun to
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execute scripts without a leading `#!'.
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c. Fixed a bug that caused $(< file) to not work in a (...) subshell.
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d. Added config support for Linux running on the IBM S390.
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e. Fixed a bug that caused bash to get its input pointer out of sync when
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reading commands through a pipe and running a command with standard
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input redirected from a file.
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f. Made a change so that command completion now makes about half as many
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stat(2) calls when searching the $PATH.
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g. Fixed a bug that caused variable assignments preceding `return' to not
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be propagated to the shell environment in POSIX mode.
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h. Fixed a bug with ${parameter[:]?word} -- tilde expansion was not performed
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on `word'.
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i. In POSIX mode, `break' and `continue' do not complain and return success
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if called when the shell is not executing a loop.
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j. Fixed `bash -o posix' to work the same as `bash --posix'.
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k. Fixed a bug where variable assignments preceding `eval' or `source/.'
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would not show up in the environment exported to subshells run by the
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commands.
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l. In POSIX mode, shells started to execute command substitutions inherit
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the value of the `-e' option from their parent shell.
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m. In POSIX mode, aliases are expanded even in non-interactive shells.
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n. Changed some of the job control messages to display the text required by
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POSIX.2 when the shell is in POSIX mode.
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o. Fixed a bug in `test' that caused it to occasionally return incorrect
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results when non-numeric arguments were supplied to `-t'.
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2. Changes to Readline
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a. Some changes were made to avoid gcc warnings with -Wall.
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b. rl_get_keymap_by_name now finds keymaps case-insensitively, so
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`set keymap EMACS' works.
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c. The history file writing and truncation functions now return a useful
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status on error.
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d. Fixed a bug that could cause applications to dereference a NULL pointer
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if a NULL second argument was passed to history_expand().
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3. New Features in Bash
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a. doc/readline.3 has been moved to the readline distribution.
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4. New Features in Readline
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a. New function, rl_get_screen_size (int *rows, int *columns), returns
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readline's idea of the screen dimensions.
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b. The timeout in rl_gather_tyi (readline keyboard input polling function)
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is now settable via a function (rl_set_keyboard_input_timeout()).
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c. Renamed the max_input_history variable to history_max_entries; the old
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variable is maintained for backwards compatibility.
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d. The list of characters that separate words for the history tokenizer is
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now settable with a variable: history_word_delimiters. The default
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value is as before.
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------------------------------------------------------------------------------
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This document details the changes between this version, bash-2.05-beta1,
|
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and the previous version, bash-2.05-alpha1.
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1. Changes to Bash
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a. Changes to allow shared library and object building on the GNU Hurd.
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b. Fixes to the way exported functions are placed into the environment and
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cached.
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c. The globbing library once again respects locales when processing ranges
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in bracket expressions while doing pattern matching.
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d. System-specific configuration changes for: Tru 64, Interix
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e. Bashbug now uses /usr/bin/editor as one of the editing alternatives, and
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will use mktemp(1) or tempfile(1), if present, for temporary file creation.
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f. Bash no longer performs a binary file check on a script argument that's
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really a tty (like /dev/fd/0 or /dev/stdin).
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g. Fixed a bug in the execution of shell scripts that caused the effects of
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$BASH_ENV to be undone in some cases.
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h. Fixed several bugs that made `bash [-i] /dev/stdin' not work correctly.
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i. Several changes to the job control code to avoid some signal state
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manipulation.
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j. The Bash malloc no longer blocks signals as often, which should make it
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faster.
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k. Fixed a parsing bug that did not allow backslash to escape a single quote
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inside a $'...' construct.
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l. Fixed a bug that caused things like ${var:=$'value'} to be parsed
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incorrectly. This showed up in newer versions of autoconf.
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m. Fixed a bug in the bash-specific readline initialization that caused
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key bindings to bash-specific function names appearing in .inputrc to
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not be honored.
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n. Bash now sets the file descriptor it uses to save the file descriptor
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opened on a shell script to close on exec.
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o. Fixed a bug in the prompt string decoding that caused it to misbehave
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when presented an octal sequence of fewer than three characters.
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p. Fixed the `test' builtin to return an error if `[' is supplied a single
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argument that is not `]'.
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q. Fixed a bug that caused subshells started to run executable shell scripts
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without a leading `#!' to incorrectly inherit an argument list preceding
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a shell builtin (like such a script called from a script sourced with `.',
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||||
where there were variable assignments preceding the `.' command)
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r. Fixed a bug that caused changes to variables supplied in an assignment
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statement preceding a shell builtin to not be honored (like a script
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run with `.').
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s. HOSTTYPE, OSTYPE, and MACHTYPE are set only if they do not have values
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when the shell is started.
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t. Fixed a bug that caused SIGINT to kill shell scripts after the script
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called `wait'.
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u. The `fc' builtin now tries to create its temporary files in the directory
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named by $TMPDIR.
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v. Bash no longer calls any Readline functions or uses any Readline variables
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not declared in readline.h.
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w. Fixed a bug that caused some substitutions involving $@ to not be split
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||||
correctly, especially expansions of the form ${paramterOPword}.
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x. SSH2_CLIENT is now treated like SSH_CLIENT and not auto-exported if it
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appears in the initial environment.
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y. Fixed a couple of problems with shell scripts without a leading `#!'
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being executed out of shell functions that could cause core dumps if
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such a script attempted to execute `return'.
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z. Fixed a problem with the `-nt' and `-ot' binary operators for the
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`test/[' builtin and the `[[' conditional command that caused wrong
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return values if one of the file arguments did not exist.
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aa. Fixed a bug that caused non-interactive shells which had previously
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executed `shopt -s expand_aliases' to fail to expand aliases in a
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command like `(command) &'.
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||||
|
||||
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.
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b. More `const' changes in function arguments, mostly for completion
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||||
functions.
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c. Fixed a bug in rl_forward that could cause the point to be set to before
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the beginning of the line in vi mode.
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||||
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||||
d. Fixed a bug in the callback read-char interface to make it work when a
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readline function pushes some input onto the input stream with
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rl_execute_next (like the incremental search functions).
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||||
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e. Fixed a file descriptor leak in the history file manipulation code that
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was tripped when attempting to truncate a non-regular file (like
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/dev/null).
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||||
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||||
f. Some existing variables are now documented and part of the public
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||||
interface (declared in readline.h): rl_explict_arg, rl_numeric_arg,
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rl_editing_mode, rl_last_func.
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||||
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g. Renamed rltty_set_default_bindings to rl_tty_set_default_bindings and
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crlf to rl_crlf, so there are no public functions declared in readline.h
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without an `rl_' prefix. The old functions still exist for backwards
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||||
compatibility.
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|
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3. New Features in Bash
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||||
|
||||
a. A new loadable builtin, realpath, which canonicalizes and expands symlinks
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in pathname arguments.
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|
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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
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||||
`declare -p' as well.
|
||||
|
||||
4. New Features in Readline
|
||||
|
||||
a. New application-callable function rl_set_prompt(const char *prompt):
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expands its prompt string argument and sets rl_prompt to the result.
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||||
|
||||
b. New application-callable function rl_set_screen_size(int rows, int cols):
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||||
public method for applications to set readline's idea of the screen
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||||
dimensions.
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||||
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||||
c. The history example program (examples/histexamp.c) is now built as one
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||||
of the examples.
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||||
|
||||
------------------------------------------------------------------------------
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||||
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.
|
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|
||||
b. configure now checks for real-time signals with unusable values.
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|
||||
c. Interactive shells no longer exit if a substitution fails because of an
|
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unset variable within a sourced file.
|
||||
|
||||
d. Fixed a problem with incorrect matching of extended glob patterns when
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||||
doing pattern substitution.
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||||
|
||||
e. `{' is now quoted by the completion code when it appears in a filename.
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||||
|
||||
f. Fixed an error in pattern matching that caused the matcher to not
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||||
correctly skip the rest of a bracket expression after a character
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matched.
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g. Fixed a bug in the IFS word splitting code to make a non-whitespace IFS
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character preceded by IFS whitespace part of the current delimiter rather
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than generating a separate field.
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|
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h. The {!prefix@} expansion now generates separate words, analogous to $@,
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||||
when double-quoted.
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|
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i. Command substitution now ignores NUL bytes in the command output, and the
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parser ignores them on input.
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|
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j. A fix was made to the job control code to prevent hanging processes when
|
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the shell thinks background processes are running but the kernel returns
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||||
-1/ECHILD from waitpid().
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||||
|
||||
k. `pwd' now prints an error message if the write fails when displaying the
|
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current directory.
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||||
|
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l. When in POSIX mode, the shell prints trap dispostions without a leading
|
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`SIG' in the signal specification.
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|
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m. Fixed a parser bug that caused the current command's line count to be
|
||||
messed up by a compound array assignment.
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|
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n. Fixed a bug in the unwind-protect code that caused bad behavior on machines
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||||
where ints and pointers are not the same size.
|
||||
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o. System-specific configure changes for: MacOS X.
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||||
|
||||
p. Changes for Cygwin to translate \r\n and \r to \n and to set file
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||||
descriptors used for reading input to text mode in various places.
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q. Fixed a bug that caused `!' to occasionally not be honored when in
|
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a (...) subshell.
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r. Bash no longer assumes that getcwd() will return any useful error message
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in the buffer passed as an argument if the call fails.
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||||
|
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s. The `source', `.', and `fc' builtins no longer check whether a file is
|
||||
binary before reading commands from it.
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||||
|
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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.
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||||
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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
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||||
multi-line command.
|
||||
|
||||
w. Removed a `feature' that made `ulimit' silently translate `unlimited' to
|
||||
the current hard limit, which obscured some kernel error returns.
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||||
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||||
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 ; } }
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||||
|
||||
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.
|
||||
|
||||
|
|
@ -480,7 +1036,7 @@ 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 inaapropriate expansion of assignment
|
||||
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
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue