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[Bug-readline] Readline-6.3-rc1 available for FTP
[Bug-readline] Readline-6.3-rc1 available for FTP
Sun, 1 Dec 2013 17:41:19 -0500
The first release candidate of the GNU Readline library, version 6.3,
is now available for FTP with the URL
This distribution is essentially a standalone version of the
readline library that appears in bash-4.3-rc1 together with
an `autoconf' framework. The documentation has been updated and
is current. Postscript, DVI, and Info versions of the Readline
and History manuals are included. A list of changes in this
release is appended to this announcement.
This release accompanies the simultaneous release of bash-4.3-rc1.
There are more improvements in the programming interface and new
user-visible variables and bindable commands.
The signal handling has been reworked to not run code in a signal
handler context, and there is a new application-settable hook that is
called when a read(2) is interrupted by a signal that readline does
not handle immediately. The inter-character key sequence timeout is
now user-settable. An application using readline can specify a hook
function to modify a filename before readline calls stat(2) (e.g., to
perform variable expansion). There is a user-settable option to have
readline print possible completions using various colors to denote
different file types.
GNU Readline is a library which provides programs with an input
facility including command-line editing and history. Editing
commands similar to both emacs and vi are included. The GNU
History library, which provides facilities for managing a list of
previously-typed command lines and an interactive command line
recall facility similar to that provided by csh, is also present.
The history library is built as part of the readline as well as
Since this is an beta release, please send readline bug reports to
As always, thanks for your help.
+========== CHANGES ==========+
This document details the changes between this version, readline-6.3, and the
previous version, readline-6.2.
1. Changes to Readline
a. Fixed a bug that did not allow the `dd', `cc', or `yy' vi editing mode
commands to work on the entire line.
b. Fixed a bug that caused redisplay problems with prompts longer than 128
characters and history searches.
c. Fixed a bug that caused readline to try and run code to modify its idea
of the screen size in a signal handler context upon receiving a SIGWINCH.
d. Fixed a bug that caused the `meta' key to be enabled beyond the duration
of an individual call top readline().
e. Added a workaround for a wcwidth bug in Mac OS X that caused readline's
redisplay to mishandle zero-width combining characters.
f. Fixed a bug that caused readline to `forget' part of a key sequence when
a multiple-key sequence caused it to break out of an incremental search.
g. Fixed bugs that caused readline to execute code in a signal handler
context if interrupted while reading from the file system during completion.
h. Fixed a bug that caused readline to `forget' part of a key sequence when
reading an unbound multi-character key sequence.
i. Fixed a bug that caused Readline's signal handlers to be installed beyond
the bounds of a single call to readline().
j. Fixed a bug that caused the `.' command to not redo the most recent `R'
command in vi mode.
k. Fixed a bug that caused ignoring case in completion matches to result in
readline using the wrong match.
l. Paren matching now works in vi insert mode.
m. Fix menu-completion to make show-all-if-ambiguous and
n. Fixed a bug that didn't allow the `cc', `dd', or `yy' commands to be redone
in vi editing mode.
o. Fixed a bug that caused the filename comparison code to not compare
multibyte characters correctly when using case-sensitive or case-mapping
p. Fixed the input reading loop to call the input hook function only when there
is no terminal input available.
q. Fixed a bug that caused binding a macro to a multi-character key sequence
where the sequence and macro value share a common prefix to not perform
the macro replacement.
r. Fixed several redisplay errors with multibyte characters and prompts
containing invisible characters when using horizontal scrolling.
s. Fixed a bug that caused redisplay errors when trying to overwrite
existing characters using multibyte characters.
t. Fixed a bug in vi mode that caused the arrow keys to set the saved last
vi-mode command to the wrong value.
u. Fixed a bug that caused double-quoted strings to be scanned incorrectly
when being used as the value of a readline variable assignment.
v. Fixed a bug with vi mode that prevented `.' from repeating a command
entered on a previous line (command).
w. Fixed a bug that could cause completion to core dump if it was interrupted
by a signal.
2. New Features in Readline
a. Readline is now more responsive to SIGHUP and other fatal signals when
reading input from the terminal or performing word completion but no
longer attempts to run any not-allowable functions from a signal handler
b. There are new bindable commands to search the history for the string of
characters between the beginning of the line and the point
c. Readline allows quoted strings as the values of variables when setting
them with `set'. As a side effect, trailing spaces and tabs are ignored
when setting a string variable's value.
d. The history library creates a backup of the history file when writing it
and restores the backup on a write error.
e. New application-settable variable: rl_filename_stat_hook: a function called
with a filename before using it in a call to stat(2). Bash uses it to
expand shell variables so things like $HOME/Downloads have a slash
f. New bindable function `print-last-kbd-macro', prints the most-recently-
defined keyboard macro in a reusable format.
g. New user-settable variable `colored-stats', enables use of colored text
to denote file types when displaying possible completions (colored analog
h. New user-settable variable `keyseq-timout', acts as an inter-character
timeout when reading input or incremental search strings.
i. New application-callable function: rl_clear_history. Clears the history list
and frees all readline-associated private data.
j. New user-settable variable, show-mode-in-prompt, adds a characters to the
beginning of the prompt indicating the current editing mode.
k. New application-settable variable: rl_input_available_hook; function to be
called when readline detects there is data available on its input file
l. Readline calls an application-set event hook (rl_signal_event_hook) after
it gets a signal while reading input (read returns -1/EINTR but readline
does not handle the signal immediately) to allow the application to handle
or otherwise note it. Not currently called for SIGHUP or SIGTERM.
m. If the user-settable variable `history-size' is set to a value less than
0, the history list size is unlimited.
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU address@hidden http://cnswww.cns.cwru.edu/~chet/
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