-This document details the changes between this version, readline-2.2.1,
+This document details the changes between this version, readline-4.0,
and the previous version, readline-2.2.
1. Changes to Readline
-a. The `make install' target was corrected so that it did not move the
- newly-installed libreadline.a to libhistory.old
+a. The version number is now 4.0, to match the major and minor version
+ numbers on the shared readline and history libraries. Future
+ releases will maintain the identical numbering.
-b. The `make install' target for the documentation will now install the
- info files from the source directory if they do not appear in the
- build directory, since they are shipped in the readline tar file.
+b. Fixed a typo in the `make install' recipe that copied libreadline.a
+ to libhistory.old right after installing it.
-c. Fixed a problem with redisplay that showed up when the prompt string was
- longer than the screen width and the prompt contained invisible characters.
+c. The readline and history info files are now installed out of the source
+ directory if they are not found in the build directory.
-d. Fixed a problem with the paren matching code -- the blink was far too
- short (it's specified in microseconds, not milliseconds, Chet!).
+d. The library no longer exports a function named `savestring' -- backwards
+ compatibility be damned.
-------------------------------------------------------------------------------
+e. There is no longer any #ifdef SHELL code in the source files.
+
+f. Some changes were made to the key binding code to fix memory leaks and
+ better support Win32 systems.
+
+g. Fixed a silly typo in the paren matching code -- it's microseconds, not
+ milliseconds.
+
+h. The readline library should be compilable by C++ compilers.
+
+i. 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.
+
+j. The maximum numeric argument is now clamped at 1000000.
+
+k. Fixes to rl_yank_last_arg to make it behave better.
+
+l. Fixed a bug in the display code that caused core dumps if the prompt
+ string length exceeded 1024 characters.
+
+m. The menu completion code was fixed to properly insert a single completion
+ if there is only one match.
+
+n. A bug was fixed that caused the display code to improperly display tabs
+ after newlines.
+
+o. 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.
+
+p. 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.
+
+q. Code was added to the history library to catch history substitutions
+ using `&' without a previous history substitution or search having been
+ performed.
+
+
+2. New Features in Readline
+
+a. There is a new script, support/shobj-conf, to do system-specific shared
+ object and library configuration. It generates variables for configure
+ to substitute into makefiles. The README file provides a detailed
+ explanation of the shared library creation process.
+
+b. Shared libraries and objects are now built in the `shlib' subdirectory.
+ There is a shlib/Makefile.in to control the build process. `make shared'
+ from the top-level directory is still the right way to build shared
+ versions of the libraries.
+
+c. rlconf.h is now installed, so applications can find out which features
+ have been compiled into the installed readline and history libraries.
+
+d. rlstdc.h is now an installed header file.
+
+e. 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
+
+f. There is a new function, rl_resize_terminal, to reset readline's idea of
+ the screen size after a SIGWINCH.
+
+g. New public functions: rl_save_prompt and rl_restore_prompt. These were
+ previously private functions with a `_' prefix. These functions are
+ used when an application wants to write a message to the `message area'
+ with rl_message and have the prompt restored correctly when the message
+ is erased.
+
+h. New function hook: rl_pre_input_hook, called just before readline starts
+ reading input, after initialization.
+
+i. 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.
+
+j. New bindable function, delete-char-or-list, like tcsh.
+
+k. 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.
+
+l. There is a new script, support/shlib-install, to install and uninstall
+ the shared readline and history libraries.
+
+m. A new bindable variable, `isearch-terminators', which is a string
+ containing the set of characters that should terminate an incremental
+ search without being executed as a command.
+
+n. A new bindable function, forward-backward-delete-char.
+
+-------------------------------------------------------------------------------
This document details the changes between this version, readline-2.2,
and the previous version, readline-2.1.
projects / binutils-gdb.git / blobdiff