613 lines
25 KiB
Plaintext
613 lines
25 KiB
Plaintext
This document details the changes between this version, readline-4.3,
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and the previous version, readline-4.2a.
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1. Changes to Readline
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a. Fixed output of comment-begin character when listing variable values.
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b. Added some default key bindings for common escape sequences produced by
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HOME and END keys.
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c. Fixed the mark handling code to be more emacs-compatible.
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d. A bug was fixed in the code that prints possible completions to keep it
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from printing empty strings in certain circumstances.
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e. Change the key sequence printing code to print ESC as M\- if ESC is a
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meta-prefix character -- it's easier for users to understand than \e.
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f. Fixed unstifle_history() to return values that match the documentation.
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g. Fixed the event loop (rl_event_hook) to handle the case where the input
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file descriptor is invalidated.
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h. Fixed the prompt display code to work better when the application has a
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custom redisplay function.
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i. Changes to make reading and writing the history file a little faster, and
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to cope with huge history files without calling abort(3) from xmalloc.
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j. The vi-mode `S' and `s' commands are now undone correctly.
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k. Fixed a problem which caused the display to be messed up when the last
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line of a multi-line prompt (possibly containing invisible characters)
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was longer than the screen width.
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2. New Features in Readline
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a. Support for key `subsequences': allows, e.g., ESC and ESC-a to both
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be bound to readline functions. Now the arrow keys may be used in vi
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insert mode.
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b. When listing completions, and the number of lines displayed is more than
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the screen length, readline uses an internal pager to display the results.
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This is controlled by the `page-completions' variable (default on).
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c. New code to handle editing and displaying multibyte characters.
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d. The behavior introduced in bash-2.05a of deciding whether or not to
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append a slash to a completed name that is a symlink to a directory has
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been made optional, controlled by the `mark-symlinked-directories'
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variable (default is the 2.05a behavior).
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e. The `insert-comment' command now acts as a toggle if given a numeric
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argument: if the first characters on the line don't specify a
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comment, insert one; if they do, delete the comment text
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f. New application-settable completion variable:
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rl_completion_mark_symlink_dirs, allows an application's completion
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function to temporarily override the user's preference for appending
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slashes to names which are symlinks to directories.
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g. New function available to application completion functions:
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rl_completion_mode, to tell how the completion function was invoked
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and decide which argument to supply to rl_complete_internal (to list
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completions, etc.).
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h. Readline now has an overwrite mode, toggled by the `overwrite-mode'
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bindable command, which could be bound to `Insert'.
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i. New application-settable completion variable:
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rl_completion_suppress_append, inhibits appending of
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rl_completion_append_character to completed words.
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j. New key bindings when reading an incremental search string: ^W yanks
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the currently-matched word out of the current line into the search
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string; ^Y yanks the rest of the current line into the search string,
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DEL or ^H deletes characters from the search string.
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-------------------------------------------------------------------------------
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This document details the changes between this version, readline-4.2a,
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and the previous version, readline-4.2.
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1. Changes to Readline
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a. More `const' and type casting fixes.
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b. Changed rl_message() to use vsnprintf(3) (if available) to fix buffer
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overflow problems.
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c. The completion code no longer appends a `/' or ` ' to a match when
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completing a symbolic link that resolves to a directory name, unless
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the match does not add anything to the word being completed. This
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means that a tab will complete the word up to the full name, but not
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add anything, and a subsequent tab will add a slash.
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d. Fixed a trivial typo that made the vi-mode `dT' command not work.
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e. Fixed the tty code so that ^S and ^Q can be inserted with rl_quoted_insert.
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f. Fixed the tty code so that ^V works more than once.
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g. Changed the use of __P((...)) for function prototypes to PARAMS((...))
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because the use of __P in typedefs conflicted g++ and glibc.
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h. The completion code now attempts to do a better job of preserving the
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case of the word the user typed if ignoring case in completions.
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i. Readline defaults to not echoing the input and lets the terminal
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initialization code enable echoing if there is a controlling terminal.
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j. The key binding code now processes only two hex digits after a `\x'
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escape sequence, and the documentation was changed to note that the
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octal and hex escape sequences result in an eight-bit value rather
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than strict ASCII.
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k. Fixed a few places where negative array subscripts could have occurred.
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l. Fixed the vi-mode code to use a better method to determine the bounds of
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the array used to hold the marks, and to avoid out-of-bounds references.
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m. Fixed the defines in chardefs.h to work better when chars are signed.
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n. Fixed configure.in to use the new names for bash autoconf macros.
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o. Readline no longer attempts to define its own versions of some ctype
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macros if they are implemented as functions in libc but not as macros in
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<ctype.h>.
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p. Fixed a problem where rl_backward could possibly set point to before
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the beginning of the line.
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q. Fixed Makefile to not put -I/usr/include into CFLAGS, since it can cause
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include file problems.
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2. New Features in Readline
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a. Added extern declaration for rl_get_termcap to readline.h, making it a
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public function (it was always there, just not in readline.h).
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b. New #defines in readline.h: RL_READLINE_VERSION, currently 0x0402,
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RL_VERSION_MAJOR, currently 4, and RL_VERSION_MINOR, currently 2.
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c. New readline variable: rl_readline_version, mirrors RL_READLINE_VERSION.
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d. New bindable boolean readline variable: match-hidden-files. Controls
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completion of files beginning with a `.' (on Unix). Enabled by default.
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e. The history expansion code now allows any character to terminate a
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`:first-' modifier, like csh.
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f. The incremental search code remembers the last search string and uses
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it if ^R^R is typed without a search string.
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h. New bindable variable `history-preserve-point'. If set, the history
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code attempts to place the user at the same location on each history
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line retrived with previous-history or next-history.
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-------------------------------------------------------------------------------
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This document details the changes between this version, readline-4.2,
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and the previous version, readline-4.1.
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1. Changes to Readline
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a. When setting the terminal attributes on systems using `struct termio',
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readline waits for output to drain before changing the attributes.
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b. A fix was made to the history word tokenization code to avoid attempts to
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dereference a null pointer.
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c. Readline now defaults rl_terminal_name to $TERM if the calling application
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has left it unset, and tries to initialize with the resultant value.
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d. Instead of calling (*rl_getc_function)() directly to get input in certain
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places, readline now calls rl_read_key() consistently.
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e. Fixed a bug in the completion code that allowed a backslash to quote a
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single quote inside a single-quoted string.
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f. rl_prompt is no longer assigned directly from the argument to readline(),
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but uses memory allocated by readline. This allows constant strings to
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be passed to readline without problems arising when the prompt processing
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code wants to modify the string.
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g. Fixed a bug that caused non-interactive history searches to return the
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wrong line when performing multiple searches backward for the same string.
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h. Many variables, function arguments, and function return values are now
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declared `const' where appropriate, to improve behavior when linking with
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C++ code.
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i. The control character detection code now works better on systems where
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`char' is unsigned by default.
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j. The vi-mode numeric argument is now capped at 999999, just like emacs mode.
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k. The Function, CPFunction, CPPFunction, and VFunction typedefs have been
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replaced with a set of specific prototyped typedefs, though they are
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still in the readline header files for backwards compatibility.
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m. Nearly all of the (undocumented) internal global variables in the library
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now have an _rl_ prefix -- there were a number that did not, like
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screenheight, screenwidth, alphabetic, etc.
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n. The ding() convenience function has been renamed to rl_ding(), though the
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old function is still defined for backwards compatibility.
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o. The completion convenience functions filename_completion_function,
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username_completion_function, and completion_matches now have an rl_
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prefix, though the old names are still defined for backwards compatibility.
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p. The functions shared by readline and bash (linkage is satisfied from bash
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when compiling with bash, and internally otherwise) now have an sh_ prefix.
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q. Changed the shared library creation procedure on Linux and BSD/OS 4.x so
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that the `soname' contains only the major version number rather than the
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major and minor numbers.
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r. Fixed a redisplay bug that occurred when the prompt spanned more than one
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physical line and contained invisible characters.
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s. Added a missing `includedir' variable to the Makefile.
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t. When installing the shared libraries, make sure symbolic links are relative.
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u. Added configure test so that it can set `${MAKE}' appropriately.
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v. 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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w. 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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x. 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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y. Changes to make all of the exported readline functions declared in
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readline.h have an rl_ prefix (rltty_set_default_bindings is now
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rl_tty_set_default_bindings, crlf is now rl_crlf, etc.)
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z. The formatted documentation included in the base readline distribution
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is no longer removed on a `make distclean'.
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aa. Some changes were made to avoid gcc warnings with -Wall.
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bb. rl_get_keymap_by_name now finds keymaps case-insensitively, so
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`set keymap EMACS' works.
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cc. The history file writing and truncation functions now return a useful
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status on error.
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dd. 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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ee. 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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2. New Features in Readline
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a. The blink timeout for paren matching is now settable by applications,
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via the rl_set_paren_blink_timeout() function.
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b. _rl_executing_macro has been renamed to rl_executing_macro, which means
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it's now part of the public interface.
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c. Readline has a new variable, rl_readline_state, which is a bitmap that
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encapsulates the current state of the library; intended for use by
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callbacks and hook functions.
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d. rlfe has a new -l option to log input and output (-a appends to logfile),
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a new -n option to set the readline application name, and -v and -h
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options for version and help information.
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e. rlfe can now perform filename completion for the inferior process if the
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OS has a /proc/<PID>/cwd that can be read with readlink(2) to get the
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inferior's current working directory.
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f. A new file, rltypedefs.h, contains the new typedefs for function pointers
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and is installed by `make install'.
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g. 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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h. 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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i. The history example program (examples/histexamp.c) is now built as one
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of the examples.
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j. The documentation has been updated to cover nearly all of the public
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functions and variables declared in readline.h.
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k. 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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l. 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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m. 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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n. 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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o. There is a new history.3 manual page documenting the history library.
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-------------------------------------------------------------------------------
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This document details the changes between this version, readline-4.1,
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and the previous version, readline-4.0.
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1. Changes to Readline
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a. Changed the HTML documents so that the table-of-contents is no longer
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a separate file.
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b. Changes to the shared object configuration for: Irix 5.x, Irix 6.x,
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OSF/1.
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c. The shared library major and minor versions are now constructed
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automatically by configure and substituted into the makefiles.
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d. It's now possible to install the shared libraries separately from the
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static libraries.
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e. The history library tries to truncate the history file only if it is a
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regular file.
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f. A bug that caused _rl_dispatch to address negative array indices on
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systems with signed chars was fixed.
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g. rl-yank-nth-arg now leaves the history position the same as when it was
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called.
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h. Changes to the completion code to handle MS-DOS drive-letter:pathname
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filenames.
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i. Completion is now case-insensitive by default on MS-DOS.
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j. Fixes to the history file manipulation code for MS-DOS.
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k. Readline attempts to bind the arrow keys to appropriate defaults on MS-DOS.
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l. Some fixes were made to the redisplay code for better operation on MS-DOS.
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m. The quoted-insert code will now insert tty special chars like ^C.
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n. A bug was fixed that caused the display code to reference memory before
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the start of the prompt string.
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o. More support for __EMX__ (OS/2).
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p. A bug was fixed in readline's signal handling that could cause infinite
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recursion in signal handlers.
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q. A bug was fixed that caused the point to be less than zero when rl_forward
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was given a very large numeric argument.
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r. The vi-mode code now gets characters via the application-settable value
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of rl_getc_function rather than calling rl_getc directly.
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s. The history file code now uses O_BINARY mode when reading and writing
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the history file on cygwin32.
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t. Fixed a bug in the redisplay code for lines with more than 256 line
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breaks.
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u. A bug was fixed which caused invisible character markers to not be
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stripped from the prompt string if the terminal was in no-echo mode.
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v. Readline no longer tries to get the variables it needs for redisplay
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from the termcap entry if the calling application has specified its
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own redisplay function. Readline treats the terminal as `dumb' in
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this case.
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w. Fixes to the SIGWINCH code so that a multiple-line prompt with escape
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sequences is redrawn correctly.
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x. Changes to the install and install-shared targets so that the libraries
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and header files are installed separately.
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2. New Features in Readline
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a. A new Readline `user manual' is in doc/rluserman.texinfo.
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b. Parentheses matching is now always compiled into readline, and enabled
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or disabled when the value of the `blink-matching-paren' variable is
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changed.
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c. MS-DOS systems now use ~/_inputrc as the last-ditch inputrc filename.
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d. MS-DOS systems now use ~/_history as the default history file.
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e. history-search-{forward,backward} now leave the point at the end of the
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line when the string to search for is empty, like
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{reverse,forward}-search-history.
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f. history-search-{forward,backward} now leave the last history line found
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in the readline buffer if the second or subsequent search fails.
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g. New function for use by applications: rl_on_new_line_with_prompt, used
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when an application displays the prompt itself before calling readline().
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h. New variable for use by applications: rl_already_prompted. An application
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that displays the prompt itself before calling readline() must set this to
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a non-zero value.
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i. A new variable, rl_gnu_readline_p, always 1. The intent is that an
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application can verify whether or not it is linked with the `real'
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readline library or some substitute.
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j. Per Bothner's `rlfe' (pronounced `Ralphie') readline front-end program
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is included in the examples subdirectory, though it is not built
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by default.
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-------------------------------------------------------------------------------
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This document details the changes between this version, readline-4.0,
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and the previous version, readline-2.2.
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1. Changes to Readline
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a. The version number is now 4.0, to match the major and minor version
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numbers on the shared readline and history libraries. Future
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releases will maintain the identical numbering.
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b. Fixed a typo in the `make install' recipe that copied libreadline.a
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to libhistory.old right after installing it.
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c. The readline and history info files are now installed out of the source
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directory if they are not found in the build directory.
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d. The library no longer exports a function named `savestring' -- backwards
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compatibility be damned.
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e. There is no longer any #ifdef SHELL code in the source files.
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f. Some changes were made to the key binding code to fix memory leaks and
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better support Win32 systems.
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g. Fixed a silly typo in the paren matching code -- it's microseconds, not
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milliseconds.
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h. The readline library should be compilable by C++ compilers.
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i. The readline.h public header file now includes function prototypes for
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all readline functions, and some changes were made to fix errors in the
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source files uncovered by the use of prototypes.
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j. The maximum numeric argument is now clamped at 1000000.
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k. Fixes to rl_yank_last_arg to make it behave better.
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l. Fixed a bug in the display code that caused core dumps if the prompt
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string length exceeded 1024 characters.
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m. The menu completion code was fixed to properly insert a single completion
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if there is only one match.
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n. A bug was fixed that caused the display code to improperly display tabs
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after newlines.
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o. A fix was made to the completion code in which a typo caused the wrong
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value to be passed to the function that computed the longest common
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prefix of the list of matches.
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p. The completion code now checks the value of rl_filename_completion_desired,
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which is set by application-supplied completion functions to indicate
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that filename completion is being performed, to decide whether or not to
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call an application-supplied `ignore completions' function.
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q. Code was added to the history library to catch history substitutions
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using `&' without a previous history substitution or search having been
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performed.
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2. New Features in Readline
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a. There is a new script, support/shobj-conf, to do system-specific shared
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object and library configuration. It generates variables for configure
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to substitute into makefiles. The README file provides a detailed
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explanation of the shared library creation process.
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b. Shared libraries and objects are now built in the `shlib' subdirectory.
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There is a shlib/Makefile.in to control the build process. `make shared'
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from the top-level directory is still the right way to build shared
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versions of the libraries.
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c. rlconf.h is now installed, so applications can find out which features
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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.
|