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@@ -1,3 +1,322 @@ +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. @@ -795,7 +1114,7 @@ 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 (errnoeous) arithmetic + a nested subshell rather than strictly as an (erroneous) arithmetic command. z. A fix was made to the globbing code so that it correctly matches quoted |