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@@ -0,0 +1,995 @@ +This document details the changes between this version, readline-5.2, +and the previous version, readline-5.1. + +1. 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. + +o. Fixed a bug with prompt redisplay in a multi-byte locale to avoid redrawing + the prompt and input line multiple times. + +p. Fixed history expansion to not be confused by here-string redirection. + +q. 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(). + +r. Fixed a redisplay bug that occurred in multibyte-capable locales when the + prompt was one character longer than the screen width. + +2. 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, readline-5.1, +and the previous version, readline-5.0. + +1. 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. + +u. The `change-case' command now correctly changes the case of multibyte + characters. + +v. Changes to the shared library construction scripts to deal with Windows + DLL naming conventions for Cygwin. + +w. Fixed the redisplay code to avoid core dumps resulting from a poorly-timed + SIGWINCH. + +x. 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. + +y. Fixed a bug that caused reversing the incremental search direction to + not work correctly. + +z. Fixed the vi-mode `U' command to only undo up to the first time insert mode + was entered, as Posix specifies. + +aa. Fixed a bug in the vi-mode `r' command that left the cursor in the wrong + place. + +bb. Fixed a redisplay bug caused by moving the cursor vertically to a line + with invisible characters in the prompt in a multibyte locale. + +cc. Fixed a bug that could cause the terminal special chars to be bound in the + wrong keymap in vi mode. + +2. 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. + +e. 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. + +f. The `C-w' binding in incremental search now understands multibyte + characters. + +g. New application-callable auxiliary function, rl_variable_value, returns + a string corresponding to a readline variable's value. + +h. When parsing inputrc files and variable binding commands, the parser + strips trailing whitespace from values assigned to boolean variables + before checking them. + +i. 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, readline-5.0, +and the previous version, readline-4.3. + +1. 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. + +x. Change to history expansion functions to treat `^' as equivalent to word + one, as the documention states. + +y. Some changes to the display code to improve display and redisplay of + multibyte characters. + +z. Changes to speed up the multibyte character redisplay code. + +aa. 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. + +bb. 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. + +cc. Fixed a bug in redisplay triggered when the prompt string contains + invisible characters. + +dd. Fixed some display (and other) bugs encountered in multibyte locales + when a non-ascii character was the last character on a line. + +ee. Fixed some display bugs caused by multibyte characters in prompt strings. + +ff. Fixed a problem with history expansion caused by non-whitespace characters + used as history word delimiters. + +gg. Fixed a problem that could cause readline to refer to freed memory when + moving between history lines while doing searches. + +hh. Improvements to the code that expands and displays prompt strings + containing multibyte characters. + +ii. Fixed a problem with vi-mode not correctly remembering the numeric argument + to the last `c'hange command for later use with `.'. + +jj. Fixed a bug in vi-mode that caused multi-digit count arguments to work + incorrectly. + +kk. Fixed a problem in vi-mode that caused the last text modification command + to not be remembered across different command lines. + +ll. Fixed problems with changing characters and changing case at the end of + the line. + +mm. Fixed a problem with readline saving the contents of the current line + before beginning a non-interactive search. + +nn. Fixed a problem with EOF detection when using rl_event_hook. + +oo. Fixed a problem with the vi mode `p' and `P' commands ignoring numeric + arguments. + +2. 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() + +i. New application variable, rl_completion_quote_character, set to any + quote character readline finds before it calls the application completion + function. + +j. 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. + +k. 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. + +l. 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. + +m. New bindable command: unix-filename-rubout. Does the same thing as + unix-word-rubout, but adds `/' to the set of word delimiters. + +n. When listing completions, directories have a `/' appended if the + `mark-directories' option has been enabled. + +------------------------------------------------------------------------------- +This document details the changes between this version, readline-4.3, +and the previous version, readline-4.2a. + +1. 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. + +k. 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. + +2. 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, readline-4.2a, +and the previous version, readline-4.2. + +1. 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. + +h. 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. + +i. Readline defaults to not echoing the input and lets the terminal + initialization code enable echoing if there is a controlling terminal. + +j. 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. + +k. Fixed a few places where negative array subscripts could have occurred. + +l. Fixed the vi-mode code to use a better method to determine the bounds of + the array used to hold the marks, and to avoid out-of-bounds references. + +m. Fixed the defines in chardefs.h to work better when chars are signed. + +n. Fixed configure.in to use the new names for bash autoconf macros. + +o. 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>. + +p. Fixed a problem where rl_backward could possibly set point to before + the beginning of the line. + +q. Fixed Makefile to not put -I/usr/include into CFLAGS, since it can cause + include file problems. + +2. 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. + +h. 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, readline-4.2, +and the previous version, readline-4.1. + +1. 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. + +s. Added a missing `includedir' variable to the Makefile. + +t. When installing the shared libraries, make sure symbolic links are relative. + +u. Added configure test so that it can set `${MAKE}' appropriately. + +v. Fixed a bug in rl_forward that could cause the point to be set to before + the beginning of the line in vi mode. + +w. 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). + +x. 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). + +y. Changes to make all of the exported readline functions declared in + readline.h have an rl_ prefix (rltty_set_default_bindings is now + rl_tty_set_default_bindings, crlf is now rl_crlf, etc.) + +z. The formatted documentation included in the base readline distribution + is no longer removed on a `make distclean'. + +aa. Some changes were made to avoid gcc warnings with -Wall. + +bb. rl_get_keymap_by_name now finds keymaps case-insensitively, so + `set keymap EMACS' works. + +cc. The history file writing and truncation functions now return a useful + status on error. + +dd. Fixed a bug that could cause applications to dereference a NULL pointer + if a NULL second argument was passed to history_expand(). + +ee. 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). + +2. New Features in Readline + +a. The blink timeout for paren matching is now settable by applications, + via the rl_set_paren_blink_timeout() function. + +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. + +d. rlfe has a new -l option to log input and output (-a appends to logfile), + a new -n option to set the readline application name, and -v and -h + options for version and help information. + +e. rlfe can now perform filename completion for the inferior process if the + OS has a /proc/<PID>/cwd that can be read with readlink(2) to get the + inferior's current working directory. + +f. A new file, rltypedefs.h, contains the new typedefs for function pointers + and is installed by `make install'. + +g. New application-callable function rl_set_prompt(const char *prompt): + expands its prompt string argument and sets rl_prompt to the result. + +h. 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. + +i. The history example program (examples/histexamp.c) is now built as one + of the examples. + +j. The documentation has been updated to cover nearly all of the public + functions and variables declared in readline.h. + +k. New function, rl_get_screen_size (int *rows, int *columns), returns + readline's idea of the screen dimensions. + +l. The timeout in rl_gather_tyi (readline keyboard input polling function) + is now settable via a function (rl_set_keyboard_input_timeout()). + +m. Renamed the max_input_history variable to history_max_entries; the old + variable is maintained for backwards compatibility. + +n. 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. + +o. There is a new history.3 manual page documenting the history library. + +------------------------------------------------------------------------------- +This document details the changes between this version, readline-4.1, +and the previous version, readline-4.0. + +1. Changes to Readline + +a. Changed the HTML documents so that the table-of-contents is no longer + a separate file. + +b. Changes to the shared object configuration for: Irix 5.x, Irix 6.x, + OSF/1. + +c. The shared library major and minor versions are now constructed + automatically by configure and substituted into the makefiles. + +d. It's now possible to install the shared libraries separately from the + static libraries. + +e. The history library tries to truncate the history file only if it is a + regular file. + +f. A bug that caused _rl_dispatch to address negative array indices on + systems with signed chars was fixed. + +g. rl-yank-nth-arg now leaves the history position the same as when it was + called. + +h. Changes to the completion code to handle MS-DOS drive-letter:pathname + filenames. + +i. Completion is now case-insensitive by default on MS-DOS. + +j. Fixes to the history file manipulation code for MS-DOS. + +k. Readline attempts to bind the arrow keys to appropriate defaults on MS-DOS. + +l. Some fixes were made to the redisplay code for better operation on MS-DOS. + +m. The quoted-insert code will now insert tty special chars like ^C. + +n. A bug was fixed that caused the display code to reference memory before + the start of the prompt string. + +o. More support for __EMX__ (OS/2). + +p. A bug was fixed in readline's signal handling that could cause infinite + recursion in signal handlers. + +q. A bug was fixed that caused the point to be less than zero when rl_forward + was given a very large numeric argument. + +r. The vi-mode code now gets characters via the application-settable value + of rl_getc_function rather than calling rl_getc directly. + +s. The history file code now uses O_BINARY mode when reading and writing + the history file on cygwin32. + +t. Fixed a bug in the redisplay code for lines with more than 256 line + breaks. + +u. 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. + +v. 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. + +w. Fixes to the SIGWINCH code so that a multiple-line prompt with escape + sequences is redrawn correctly. + +x. Changes to the install and install-shared targets so that the libraries + and header files are installed separately. + +2. New Features in Readline + +a. A new Readline `user manual' is in doc/rluserman.texinfo. + +b. Parentheses matching is now always compiled into readline, and enabled + or disabled when the value of the `blink-matching-paren' variable is + changed. + +c. MS-DOS systems now use ~/_inputrc as the last-ditch inputrc filename. + +d. MS-DOS systems now use ~/_history as the default history file. + +e. 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. + +f. history-search-{forward,backward} now leave the last history line found + in the readline buffer if the second or subsequent search fails. + +g. New function for use by applications: rl_on_new_line_with_prompt, used + when an application displays the prompt itself before calling readline(). + +h. 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. + +i. 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. + +j. Per Bothner's `rlfe' (pronounced `Ralphie') readline front-end program + is included in the examples subdirectory, though it is not built + by default. + +------------------------------------------------------------------------------- +This document details the changes between this version, readline-4.0, +and the previous version, readline-2.2. + +1. Changes to Readline + +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. Fixed a typo in the `make install' recipe that copied libreadline.a + to libhistory.old right after installing it. + +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. 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. + +1. 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. + +f. Fixed a problem in the readline test program rltest.c that caused a core + dump. + +g. The code that handles parser directives in inputrc files now displays + more error messages. + +h. 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. + +i. The code that prints completion listings now behaves better if one or + more of the filenames contains non-printable characters. + +j. The time delay when showing matching parentheses is now 0.5 seconds. + + +2. 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. |