#4405: readline-8.0
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Reporter: avmaisak | Owner: lfs-book
Type: task | Status: new
Priority: normal | Milestone: 8.4
Component: Book | Version: SVN
Severity: normal | Resolution:
Keywords: |
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Description changed by avmaisak:
Old description:
> ftp://ftp.cwru.edu/pub/bash/readline-8.0.tar.gz
New description:
ftp://ftp.cwru.edu/pub/bash/readline-8.0.tar.gz
1. Changes to Readline
a. Added a guard to prevent nested macros from causing an infinite
expansion
loop.
b. Instead of allocating enough history list entries to hold the maximum
list
size, cap the number allocated initially.
c. Added a strategy to avoid allocating huge amounts of memory if a block
of
history entries without timestamps occurs after a block with
timestamps.
d. Added support for keyboard timeouts when an ESC character is the last
character in a macro.
e. There are several performance improvements when in a UTF-8 locale.
f. Readline does a better job of preserving the original set of blocked
signals when using pselect() to wait for input.
g. Fixed a bug that caused multibyte characters in macros to be
mishandled.
h. Fixed several bugs in the code that calculates line breaks when
expanding
prompts that span several lines, contain multibyte characters, and
contain
invisible character seqeuences.
i. Fixed several bugs in cursor positioning when displaying lines with
prompts
containing invisible characters and multibyte characters.
j. When performing case-insensitive completion, Readline no longer sorts
the
list of matches unless directed to do so.
k. Fixed a problem with key sequences ending with a backslash.
l. Fixed out-of-bounds and free memory read errors found via fuzzing.
m. Fixed several cases where the mark was set to an invalid value.
n. Fixed a problem with the case-changing operators in the case where the
lower and upper case versions of a character do not have the same
number
of bytes.
o. Handle incremental and non-incremental search character reads returning
EOF.
p. Handle the case where a failing readline command at the end of a multi-
key
sequence could be misinterpreted.
q. The history library now prints a meaningful error message if the
history
file isn't a regular file.
r. Fixed a problem with vi-mode redo (`.') on a command when trying to
replace
a multibyte character.
s. The key binding code now attempts to remove a keymap if a key unbinding
leaves it empty.
t. Fixed a line-wrapping issue that caused problems for some terminal
emulators.
u. If there is a key bound to the tty's VDISCARD special character,
readline
disables VDISCARD while it is active.
v. Fixed a problem with exiting bracketed paste mode on terminals that
assume
the bracketed paste mode character sequence contains visible
characters.
w. Fixed a bug that could cause a key binding command to refer to an
uninitialized variable.
x. Added more UTF-8-specific versions of multibyte functions, and
optimized
existing functions if the current locale uses UTF-8 encoding.
y. Fixed a problem with bracketed-paste inserting more than one character
and
interacting with other readline functions.
z. Fixed a bug that caused the history library to attempt to append a
history
line to a non-existent history entry.
aa. If using bracketed paste mode, output a newline after the \r that is
the
last character of the mode disable string to avoid overwriting output.
bb. Fixes to the vi-mode `b', `B', `w', `W', `e', and `E' commands to
better
handle multibyte characters.
cc. Fixed a redisplay problem that caused an extra newline to be generated
on
accept-line when the line length is exactly the screenwidth.
dd. Fixed a bug with adding multibyte characters to an incremental search
string.
ee. Fixed a bug with redoing text insertions in vi mode.
ff. Fixed a bug with pasting text into an incremental search string if
bracketed
paste mode is enabled. ESC cannot be one of the incremental search
terminator characters for this to work.
gg. Fixed a bug with anchored search patterns when performing searches in
vi
mode.
2. New Features in Readline
a. Non-incremental vi-mode search (`N', `n') can search for a shell
pattern, as
Posix specifies (uses fnmatch(3) if available).
b. There are new `next-screen-line' and `previous-screen-line' bindable
commands, which move the cursor to the same column in the next, or
previous,
physical line, respectively.
c. There are default key bindings for control-arrow-key key combinations.
d. A negative argument (-N) to `quoted-insert' means to insert the next N
characters using quoted-insert.
e. New public function: rl_check_signals(), which allows applications to
respond to signals that readline catches while waiting for input using
a custom read function.
f. There is new support for conditionally testing the readline version in
an
inputrc file, with a full set of arithmetic comparison operators
available.
g. There is a simple variable comparison facility available for use within
an
inputrc file. Allowable operators are equality and inequality; string
variables may be compared to a value; boolean variables must be
compared to
either `on' or `off'; variable names are separated from the operator by
whitespace.
h. The history expansion library now understands command and process
substitution and extended globbing and allows them to appear anywhere
in a
word.
i. The history library has a new variable that allows applications to set
the
initial quoting state, so quoting state can be inherited from a
previous
line.
j. Readline now allows application-defined keymap names; there is a new
public
function, rl_set_keymap_name(), to do that.
k. The "Insert" keypad key, if available, now puts readline into overwrite
mode.
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