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version 1.1.1.1, 2014/07/30 08:16:45
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version 1.1.1.2, 2021/03/17 01:01:01
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This document details the changes between this version, readline-8.1, and |
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the previous version, readline-8.0. |
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|
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1. Changes to Readline |
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|
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a. There are a number of fixes that were found as the result of fuzzing with |
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random input. |
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|
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b. Changed the revert-all-at-newline behavior to make sure to start at the end |
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of the history list when doing it, instead of the line where the user hit |
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return. |
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|
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c. When parsing `set' commands from the inputrc file or an application, readline |
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now allows trailing whitespace. |
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|
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d. Fixed a bug that left a file descriptor open to the history file if the |
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file size was 0. |
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|
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e. Fixed a problem with binding key sequences containing meta characters. |
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|
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f. Fixed a bug that caused the wrong line to be displayed if the user tried to |
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move back beyond the beginning of the history list, or forward past the end |
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of the history list. |
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|
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g. If readline catches SIGTSTP, it now sets a hook that allows the calling |
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application to handle it if it desires. |
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|
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h. Fixed a redisplay problem with a prompt string containing embedded newlines. |
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|
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i. Fixed a problem with completing filenames containing invalid multibyte |
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sequences when case-insensitive comparisons are enabled. |
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|
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j. Fixed a redisplay problem with prompt strings containing invisible multibyte |
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characters. |
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|
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k. Fixed a problem with multibyte characters mapped to editing commands that |
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modify the search string in incremental search. |
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|
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l. Fixed a bug with maintaining the key sequence while resolving a bound |
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command in the presence of ambiguous sequences (sequences with a common |
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prefix), in most cases while attempting to unbind it. |
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|
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m. Fixed several buffer overflows found as the result of fuzzing. |
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|
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n. Reworked backslash handling when translating key sequences for key binding |
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to be more uniform and consistent, which introduces a slight backwards |
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incompatibility. |
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|
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o. Fixed a bug with saving the history that resulted in errors not being |
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propagated to the calling application when the history file is not writable. |
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|
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p. Readline only calls chown(2) on a newly-written history file if it really |
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needs to, instead of having it be a no-op. |
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|
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q. Readline now behaves better when operate-and-get-next is used when the |
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history list is `full': when there are already $HISTSIZE entries. |
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|
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r. Fixed a bug that could cause vi redo (`.') of a replace command not to work |
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correctly in the C or POSIX locale. |
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|
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s. Fixed a bug with vi-mode digit arguments that caused the last command to be |
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set incorrectly. This prevents yank-last-arg from working as intended, for |
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example. |
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|
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t. Make sure that all undo groups are closed when leaving vi insertion mode. |
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|
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u. Make sure that the vi-mode `C' and `c' commands enter insert mode even if |
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the motion command doesn't have any effect. |
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|
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v. Fixed several potential memory leaks in the callback mode context handling. |
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|
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w. If readline is handling a SIGTTOU, make sure SIGTTOU is blocked while |
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executing the terminal cleanup code, since it's no longer run in a signal |
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handling context. |
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|
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x. Fixed a bug that could cause an application with an application-specific |
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redisplay function to crash if the line data structures had not been |
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initialized. |
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|
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y. Terminals that are named "dumb" or unknown do not enable bracketed paste |
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by default. |
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|
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z. Ensure that disabling bracketed paste turns off highlighting the incremental |
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search string when the search is successful. |
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|
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2. New Features in Readline |
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|
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a. If a second consecutive completion attempt produces matches where the first |
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did not, treat it as a new completion attempt and insert a match as |
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appropriate. |
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|
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b. Bracketed paste mode works in more places: incremental search strings, vi |
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overstrike mode, character search, and reading numeric arguments. |
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|
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c. Readline automatically switches to horizontal scrolling if the terminal has |
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only one line. |
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|
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d. Unbinding all key sequences bound to a particular readline function now |
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descends into keymaps for multi-key sequences. |
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|
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e. rl-clear-display: new bindable command that clears the screen and, if |
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possible, the scrollback buffer (bound to emacs mode M-C-l by default). |
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|
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f. New active mark and face feature: when enabled, it will highlight the text |
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inserted by a bracketed paste (the `active region') and the text found by |
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incremental and non-incremental history searches. This is tied to bracketed |
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paste and can be disabled by turning off bracketed paste. |
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|
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g. Readline sets the mark in several additional commands. |
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|
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h. Bracketed paste mode is enabled by default. There is a configure-time |
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option (--enable-bracketed-paste-default) to set the default to on or off. |
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|
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i. Readline tries to take advantage of the more regular structure of UTF-8 |
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characters to identify the beginning and end of characters when moving |
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through the line buffer. |
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|
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j. The bindable operate-and-get-next command (and its default bindings) are |
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now part of readline instead of a bash-specific addition. |
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|
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k. The signal cleanup code now blocks SIGINT while processing after a SIGINT. |
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|
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------------------------------------------------------------------------------- |
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This document details the changes between this version, readline-8.0, and the |
| |
previous version, readline-7.0. |
| |
|
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1. Changes to Readline |
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|
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a. Added a guard to prevent nested macros from causing an infinite expansion |
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loop. |
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|
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b. Instead of allocating enough history list entries to hold the maximum list |
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size, cap the number allocated initially. |
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|
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c. Added a strategy to avoid allocating huge amounts of memory if a block of |
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history entries without timestamps occurs after a block with timestamps. |
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|
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d. Added support for keyboard timeouts when an ESC character is the last |
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character in a macro. |
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|
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e. There are several performance improvements when in a UTF-8 locale. |
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|
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f. Readline does a better job of preserving the original set of blocked |
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signals when using pselect() to wait for input. |
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|
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g. Fixed a bug that caused multibyte characters in macros to be mishandled. |
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|
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h. Fixed several bugs in the code that calculates line breaks when expanding |
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prompts that span several lines, contain multibyte characters, and contain |
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invisible character seqeuences. |
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|
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i. Fixed several bugs in cursor positioning when displaying lines with prompts |
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containing invisible characters and multibyte characters. |
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|
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j. When performing case-insensitive completion, Readline no longer sorts the |
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list of matches unless directed to do so. |
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|
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k. Fixed a problem with key sequences ending with a backslash. |
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|
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l. Fixed out-of-bounds and free memory read errors found via fuzzing. |
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|
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m. Fixed several cases where the mark was set to an invalid value. |
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|
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n. Fixed a problem with the case-changing operators in the case where the |
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lower and upper case versions of a character do not have the same number |
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of bytes. |
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|
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o. Handle incremental and non-incremental search character reads returning EOF. |
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|
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p. Handle the case where a failing readline command at the end of a multi-key |
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sequence could be misinterpreted. |
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|
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q. The history library now prints a meaningful error message if the history |
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file isn't a regular file. |
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|
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r. Fixed a problem with vi-mode redo (`.') on a command when trying to replace |
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a multibyte character. |
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|
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s. The key binding code now attempts to remove a keymap if a key unbinding |
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leaves it empty. |
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|
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t. Fixed a line-wrapping issue that caused problems for some terminal |
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emulators. |
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|
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u. If there is a key bound to the tty's VDISCARD special character, readline |
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disables VDISCARD while it is active. |
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|
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v. Fixed a problem with exiting bracketed paste mode on terminals that assume |
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the bracketed paste mode character sequence contains visible characters. |
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|
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w. Fixed a bug that could cause a key binding command to refer to an |
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uninitialized variable. |
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|
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x. Added more UTF-8-specific versions of multibyte functions, and optimized |
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existing functions if the current locale uses UTF-8 encoding. |
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|
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y. Fixed a problem with bracketed-paste inserting more than one character and |
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interacting with other readline functions. |
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|
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z. Fixed a bug that caused the history library to attempt to append a history |
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line to a non-existent history entry. |
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|
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aa. If using bracketed paste mode, output a newline after the \r that is the |
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last character of the mode disable string to avoid overwriting output. |
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|
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bb. Fixes to the vi-mode `b', `B', `w', `W', `e', and `E' commands to better |
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handle multibyte characters. |
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|
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cc. Fixed a redisplay problem that caused an extra newline to be generated on |
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accept-line when the line length is exactly the screenwidth. |
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|
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dd. Fixed a bug with adding multibyte characters to an incremental search |
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string. |
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|
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ee. Fixed a bug with redoing text insertions in vi mode. |
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|
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ff. Fixed a bug with pasting text into an incremental search string if bracketed |
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paste mode is enabled. ESC cannot be one of the incremental search |
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terminator characters for this to work. |
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|
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gg. Fixed a bug with anchored search patterns when performing searches in vi |
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mode. |
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|
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2. New Features in Readline |
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|
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a. Non-incremental vi-mode search (`N', `n') can search for a shell pattern, as |
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Posix specifies (uses fnmatch(3) if available). |
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|
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b. There are new `next-screen-line' and `previous-screen-line' bindable |
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commands, which move the cursor to the same column in the next, or previous, |
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physical line, respectively. |
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|
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c. There are default key bindings for control-arrow-key key combinations. |
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|
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d. A negative argument (-N) to `quoted-insert' means to insert the next N |
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characters using quoted-insert. |
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|
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e. New public function: rl_check_signals(), which allows applications to |
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respond to signals that readline catches while waiting for input using |
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a custom read function. |
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|
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f. There is new support for conditionally testing the readline version in an |
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inputrc file, with a full set of arithmetic comparison operators available. |
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|
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g. There is a simple variable comparison facility available for use within an |
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inputrc file. Allowable operators are equality and inequality; string |
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variables may be compared to a value; boolean variables must be compared to |
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either `on' or `off'; variable names are separated from the operator by |
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whitespace. |
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|
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h. The history expansion library now understands command and process |
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substitution and extended globbing and allows them to appear anywhere in a |
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word. |
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|
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i. The history library has a new variable that allows applications to set the |
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initial quoting state, so quoting state can be inherited from a previous |
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line. |
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|
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j. Readline now allows application-defined keymap names; there is a new public |
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function, rl_set_keymap_name(), to do that. |
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|
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k. The "Insert" keypad key, if available, now puts readline into overwrite |
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mode. |
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|
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------------------------------------------------------------------------------- |
| |
This document details the changes between this version, readline-7.0, and the |
| |
previous version, readline-6.3. |
| |
|
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1. Changes to Readline |
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|
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a. A bug that caused vi-mode `.' to be unable to redo `c', `d', and `y' |
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commands with modifiers was fixed. |
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|
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b. Fixed a bug that caused callback mode to dump core when reading a |
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multiple-key sequence (e.g., arrow keys). |
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|
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c. Fixed a bug that caused the redisplay code to erase some of the line when |
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using horizontal scrolling with incremental search. |
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|
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d. Readline's input handler now performs signal processing if read(2) is |
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interrupted by SIGALRM or SIGVTALRM. |
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|
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e. Fixed a problem with revert-all-at-newline freeing freed memory. |
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|
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f. Clarified the documentation for the history_quotes_inhibit_expansion |
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variable to note that it inhibits scanning for the history comment |
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character and that it only affects double-quoted strings. |
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|
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g. Fixed an off-by-one error in the prompt printed when performing searches. |
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|
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h. Use pselect(2), if available, to wait for input before calling read(2), so |
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a SIGWINCH can interrupt it, since it doesn't interrupt read(2). |
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|
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i. Some memory leaks caused by signals interrupting filename completion have |
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been fixed. |
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|
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j. Reading EOF twice on a non-empty line causes EOF to be returned, rather |
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than the partial line. This can cause partial lines to be executed on |
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SIGHUP, for example. |
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|
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k. Fixed a bug concerning deleting multibyte characters from the search |
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string while performing an incremental search. |
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|
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l. Fixed a bug with tilde expanding directory names in filename completion. |
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|
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m. Fixed a bug that did not allow binding sequences beginning with a `\'. |
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|
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n. Fixed a redisplay bug involving incorrect line wrapping when the prompt |
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contains a multibyte character in the last screen column. |
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|
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o. Fixed a bug that caused history expansion to disregard characters that are |
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documented to delimit a history event specifier without requiring `:'. |
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|
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p. Fixed a bug that could cause reading past the end of a string when reading |
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the value when binding the set of isearch terminators. |
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|
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q. Fixed a bug that caused readline commands that depend on knowing which |
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key invoked them to misbehave when dispatching key sequences that are |
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prefixes of other key bindings. |
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|
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r. Paren matching now works in vi insert mode. |
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|
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s. Colored completion prefixes are now displayed using a different color, less |
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likely to collide with files. |
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|
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t. Fixed a bug that caused vi-mode character search to misbehave when |
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running in callback mode. |
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|
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u. Fixed a bug that caused output to be delayed when input is coming from a |
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macro in vi-mode. |
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|
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v. Fixed a bug that caused the vi-mode `.' command to misbehave when redoing |
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a multi-key key sequence via a macro. |
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|
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w. Fixed a bug that caused problems with applications that supply their own |
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input function when performing completion. |
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|
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x. When read returns -1/EIO when attempting to read a key, return an error |
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instead of line termination back to the caller. |
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|
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y. Updated tty auditing feature based on patch from Red Hat. |
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|
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z. Fixed a bug that could cause the history library to crash on overflows |
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introduced by malicious editing of timestamps in the history file. |
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|
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aa. The history file writing functions only attempt to create and use a backup |
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history file if the history file exists and is a regular file. |
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|
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bb. Fixed an out-of-bounds read in readline's internal tilde expansion interface. |
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|
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cc. Fixed several redisplay bugs with prompt strings containing multibyte |
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and non-visible characters whose physical length is longer than the screen |
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width. |
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|
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dd. Fixed a redisplay bug with prompt strings containing invisible characters |
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whose physical length exceeds the screen width and using incremental search. |
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|
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ee. Readline prints more descriptive error messages when it encounters errors |
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while reading an inputrc file. |
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|
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ff. Fixed a bug in the character insertion code that attempts to optimize |
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typeahead when it reads a character that is not bound to self-insert and |
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resets the key sequence state. |
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|
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gg. When refreshing the line as the result of a key sequence, Readline attempts |
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to redraw only the last line of a multiline prompt. |
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|
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hh. Fixed an issue that caused completion of git commands to display |
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incorrectly when using colored-completion-prefix. |
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|
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ii. Fixed several redisplay bugs having to do with multibyte characters and |
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invisible characters in prompt strings. |
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|
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jj. Fixed a bug that caused mode strings to be displayed incorrectly if the |
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prompt was shorter than the mode string. |
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|
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2. New Features in Readline |
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|
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a. The history truncation code now uses the same error recovery mechansim as |
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the history writing code, and restores the old version of the history file |
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on error. The error recovery mechanism handles symlinked history files. |
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|
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b. There is a new bindable variable, `enable-bracketed-paste', which enables |
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support for a terminal's bracketed paste mode. |
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|
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c. The editing mode indicators can now be strings and are user-settable |
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(new `emacs-mode-string', `vi-cmd-mode-string' and `vi-ins-mode-string' |
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variables). Mode strings can contain invisible character sequences. |
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Setting mode strings to null strings restores the defaults. |
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|
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d. Prompt expansion adds the mode string to the last line of a multi-line |
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prompt (one with embedded newlines). |
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|
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e. There is a new bindable variable, `colored-completion-prefix', which, if |
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set, causes the common prefix of a set of possible completions to be |
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displayed in color. |
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|
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f. There is a new bindable command `vi-yank-pop', a vi-mode version of emacs- |
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mode yank-pop. |
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|
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g. The redisplay code underwent several efficiency improvements for multibyte |
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locales. |
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|
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h. The insert-char function attempts to batch-insert all pending typeahead |
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that maps to self-insert, as long as it is coming from the terminal. |
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|
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i. rl_callback_sigcleanup: a new application function that can clean up and |
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unset any state set by readline's callback mode. Intended to be used |
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after a signal. |
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|
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j. If an incremental search string has its last character removed with DEL, the |
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resulting empty search string no longer matches the previous line. |
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|
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k. If readline reads a history file that begins with `#' (or the value of |
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the history comment character) and has enabled history timestamps, the history |
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entries are assumed to be delimited by timestamps. This allows multi-line |
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history entries. |
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|
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l. Readline now throws an error if it parses a key binding without a terminating |
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`:' or whitespace. |
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|
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m. The default binding for ^W in vi mode now uses word boundaries specified |
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by Posix (vi-unix-word-rubout is bindable command name). |
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|
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n. rl_clear_visible_line: new application-callable function; clears all |
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screen lines occupied by the current visible readline line. |
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|
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o. rl_tty_set_echoing: application-callable function that controls whether |
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or not readline thinks it is echoing terminal output. |
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|
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p. Handle >| and strings of digits preceding and following redirection |
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specifications as single tokens when tokenizing the line for history |
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expansion. |
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|
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q. Fixed a bug with displaying completions when the prefix display length |
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is greater than the length of the completions to be displayed. |
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|
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r. The :p history modifier now applies to the entire line, so any expansion |
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specifying :p causes the line to be printed instead of expanded. |
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|
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s. New application-callable function: rl_pending_signal(): returns the signal |
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number of any signal readline has caught but not yet handled. |
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|
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t. New application-settable variable: rl_persistent_signal_handlers: if set |
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to a non-zero value, readline will enable the readline-6.2 signal handler |
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behavior in callback mode: handlers are installed when |
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rl_callback_handler_install is called and removed removed when a complete |
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line has been read. |
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|
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------------------------------------------------------------------------------- |
| This document details the changes between this version, readline-6.3, and the |
This document details the changes between this version, readline-6.3, and the |
| previous version, readline-6.2. |
previous version, readline-6.2. |
| |
|
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