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Subject: |
Readline-8.2-rc1 available |
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Date: |
Fri, 17 Jun 2022 10:22:03 -0400 |
The first release candidate of the GNU Readline library, version 8.2,
is now available with the URLs
ftp://ftp.cwru.edu/pub/bash/readline-8.2-rc1.tar.gz
https://ftp.gnu.org/pub/gnu/readline/readline-8.2-rc1.tar.gz
and from the readline-8.2-testing branch in the readline git repository
(http://git.savannah.gnu.org/cgit/readline.git/log/?h=readline-8.2-testing).
You can use
git clone --branch readline-8.2-testing git://git.savannah.gnu.org/readline.git
to clone the testing branch.
The CWRU FTP site works best if your client supports Extended Passive
(EPSV) mode.
This distribution is essentially a standalone version of the
readline library that appears in bash-5.2-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-5.2-rc1.
There are more improvements in the programming interface and new
user-visible variables and bindable commands.
The most visible new feature is the addition of a new option which allows
users to turn off the active region support without disabling bracketed
paste. The option has the same default value as bracketed-paste, and
enabling bracketed paste enables the active region. When the default
value of of bracketed paste is enabled, unsetting this option in an
inputrc file should suffice to disable active region support.
There are two new bindable readline variables, active-region-start-color
and active-region-end-color. The first sets the color used to display the
active region; the second turns it off. If set, these are used in place of
the escape sequences that enable and disable terminal standout mode.
There are bug fixes for redisplaying the prompt when aborting incremental
searches or switching to and from a digit-argument prompt. There is a fix
for a redisplay problem that caused the prompt to be wrapped incorrectly
if the screen changed dimensions during a call to readline() and the prompt
became longer than the screen width. There are fixes for a couple of
problems that could cause rl_end to be set incorrectly.
Full details of the changes and bug fixes are below.
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
separately.
Since this is a testing release, please send readline bug reports to
chet.ramey@case.edu.
As always, thanks for your help.
Chet
+========== CHANGES ==========+
This document details the changes between this version, readline-8.2, and
the previous version, readline-8.1.
1. Changes to Readline
a. Fixed a problem with cleaning up active marks when using callback mode.
b. Fixed a problem with arithmetic comparison operators checking the version.
c. Fixed a problem that could cause readline not to build on systems without
POSIX signal functions.
d. Fixed a bug that could cause readline to crash if the application removed
the callback line handler before readline read all typeahead.
e. Added additional checks for read errors in the middle of readline commands.
f. Fixed a redisplay problem that occurred when switching from the digit-
argument prompt `(arg: N)' back to the regular prompt and the regular
prompt contained invisible characters.
g. Fixed a problem with restoring the prompt when aborting an incremental
search.
h. Fix a problem with characters > 128 not being displayed correctly in certain
single-byte encodings.
i. Fixed a problem with unix-filename-rubout that caused it to delete too much
when applied to a pathname consisting only of one or more slashes.
j. Fixed a display problem that caused the prompt to be wrapped incorrectly if
the screen changed dimensions during a call to readline() and the prompt
became longer than the screen width.
k. Fixed a problem that caused the \r output by turning off bracketed paste
to overwrite the line if terminal echo was disabled.
l. Fixed a bug that could cause colored-completion-prefix to not display if
completion-prefix-display-length was set.
m. Fixed a problem with line wrapping prompts when a group of invisible
characters runs to the right edge of the screen and the prompt extends
longer then the screen width.
n. Fixed a couple problems that could cause rl_end to be set incorrectly by
transpose-words.
o. Prevent some display problems when running a command as the result of a
trap or one bound using `bind -x' and the command generates output.
p. Fixed an issue with multi-line prompt strings that have one or more
invisible characters at the end of a physical line.
q. Fixed an issue that caused a history line's undo list to be cleared when
it should not have been.
2. New Features in Readline
a. There is now an HS_HISTORY_VERSION containing the version number of the
history library for applications to use.
b. History expansion better understands multiple history expansions that may
contain strings that would ordinarily inhibit history expansion (e.g.,
`abc!$!$').
c. There is a new framework for readline timeouts, including new public
functions to set timeouts and query how much time is remaining before a
timeout hits, and a hook function that can trigger when readline times
out. There is a new state value to indicate a timeout.
d. Automatically bind termcap key sequences for page-up and page-down to
history-search-backward and history-search-forward, respectively.
e. There is a new `fetch-history' bindable command that retrieves the history
entry corresponding to its numeric argument. Negative arguments count back
from the end of the history.
f. `vi-undo' is now a bindable command.
g. There is a new option: `enable-active-region'. This separates control of
the active region and bracketed-paste. It has the same default value as
bracketed-paste, and enabling bracketed paste enables the active region.
Users can now turn off the active region while leaving bracketed paste
enabled.
h. rl_completer_word_break_characters is now `const char *' like
rl_basic_word_break_characters.
i. Readline looks in $LS_COLORS for a custom filename extension
(*.readline-colored-completion-prefix) and uses that as the default color
for the common prefix displayed when `colored-completion-prefix' is set.
j. Two new bindable string variables: active-region-start-color and
active-region-end-color. The first sets the color used to display the
active region; the second turns it off. If set, these are used in place
of terminal standout mode.
k. New readline state (RL_STATE_EOF) and application-visible variable
(rl_eof_found) to allow applications to detect when readline reads EOF
before calling the deprep-terminal hook.
l. There is a new configuration option: --with-shared-termcap-library, which
forces linking the shared readline library with the shared termcap (or
curses/ncurses/termlib) library so applications don't have to do it.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/
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