#3982: readline-7.0
 Reporter:  bdubbs@…  |      Owner:  lfs-book@…
     Type:  task      |     Status:  new
 Priority:  normal    |  Milestone:  7.11
Component:  Book      |    Version:  SVN
 Severity:  normal    |   Keywords:
 New major version.

 1.  Changes to Readline

 a.  A bug that caused vi-mode `.' to be unable to redo `c', `d', and `y'
 commands with modifiers was fixed.

 b.  Fixed a bug that caused callback mode to dump core when reading a
 multiple-key sequence (e.g., arrow keys).

 c.  Fixed a bug that caused the redisplay code to erase some of the line
 when using horizontal scrolling with incremental search.

 d.  Readline's input handler now performs signal processing if read(2) is
 interrupted by SIGALRM or SIGVTALRM.

 e.  Fixed a problem with revert-all-at-newline freeing freed memory.

 f.  Clarified the documentation for the history_quotes_inhibit_expansion
 variable to note that it inhibits scanning for the history comment
 character and that it only affects double-quoted strings.

 g.  Fixed an off-by-one error in the prompt printed when performing

 h.  Use pselect(2), if available, to wait for input before calling
 read(2), so a SIGWINCH can interrupt it, since it doesn't interrupt

 i.  Some memory leaks caused by signals interrupting filename completion
 have been fixed.

 j.  Reading EOF twice on a non-empty line causes EOF to be returned,
 rather than the partial line.  This can cause partial lines to be executed
 on SIGHUP, for example.

 k.  Fixed a bug concerning deleting multibyte characters from the search
 string while performing an incremental search.

 l.  Fixed a bug with tilde expanding directory names in filename

 m.  Fixed a bug that did not allow binding sequences beginning with a `\'.

 n.  Fixed a redisplay bug involving incorrect line wrapping when the
 prompt contains a multibyte character in the last screen column.

 o.  Fixed a bug that caused history expansion to disregard characters that
 are documented to delimit a history event specifier without requiring `:'.

 p.  Fixed a bug that could cause reading past the end of a string when
 reading the value when binding the set of isearch terminators.

 q.  Fixed a bug that caused readline commands that depend on knowing which
 key invoked them to misbehave when dispatching key sequences that are
 prefixes of other key bindings.

 r.  Paren matching now works in vi insert mode.

 s.  Colored completion prefixes are now displayed using a different color,
 less likely to collide with files.

 t.  Fixed a bug that caused vi-mode character search to misbehave when
 running in callback mode.

 u.  Fixed a bug that caused output to be delayed when input is coming from
 a macro in vi-mode.

 v.  Fixed a bug that caused the vi-mode `.' command to misbehave when
 redoing a multi-key key sequence via a macro.

 w.  Fixed a bug that caused problems with applications that supply their
 own input function when performing completion.

 x.  When read returns -1/EIO when attempting to read a key, return an
 error instead of line termination back to the caller.

 y.  Updated tty auditing feature based on patch from Red Hat.

 z.  Fixed a bug that could cause the history library to crash on overflows
 introduced by malicious editing of timestamps in the history file.

 aa. The history file writing functions only attempt to create and use a
 backup history file if the history file exists and is a regular file.

 bb. Fixed an out-of-bounds read in readline's internal tilde expansion

 cc. Fixed several redisplay bugs with prompt strings containing multibyte
 and non-visible characters whose physical length is longer than the screen

 dd. Fixed a redisplay bug with prompt strings containing invisible
 characters whose physical length exceeds the screen width and using
 incremental search.

 ee. Readline prints more descriptive error messages when it encounters
 errors while reading an inputrc file.

 ff. Fixed a bug in the character insertion code that attempts to optimize
 typeahead when it reads a character that is not bound to self-insert and
 resets the key sequence state.

 gg.  When refreshing the line as the result of a key sequence, Readline
 attempts to redraw only the last line of a multiline prompt.

 hh.  Fixed an issue that caused completion of git commands to display
 incorrectly when using colored-completion-prefix.

 ii.  Fixed several redisplay bugs having to do with multibyte characters
 and invisible characters in prompt strings.

 jj. Fixed a bug that caused mode strings to be displayed incorrectly if
 the prompt was shorter than the mode string.

 2.  New Features in Readline

 a.  The history truncation code now uses the same error recovery mechansim
 as the history writing code, and restores the old version of the history
 file on error.  The error recovery mechanism handles symlinked history

 b.  There is a new bindable variable, `enable-bracketed-paste', which
 enables support for a terminal's bracketed paste mode.

 c.  The editing mode indicators can now be strings and are user-settable
 (new `emacs-mode-string', `vi-cmd-mode-string' and `vi-ins-mode-string'
 variables).  Mode strings can contain invisible character sequences.
 Setting mode strings to null strings restores the defaults.

 d.  Prompt expansion adds the mode string to the last line of a multi-line
 prompt (one with embedded newlines).

 e.  There is a new bindable variable, `colored-completion-prefix', which,
 if set, causes the common prefix of a set of possible completions to be
 displayed in color.

 f.  There is a new bindable command `vi-yank-pop', a vi-mode version of
 emacs-mode yank-pop.

 g.  The redisplay code underwent several efficiency improvements for
 multibyte locales.

 h.  The insert-char function attempts to batch-insert all pending
 typeahead that maps to self-insert, as long as it is coming from the

 i.  rl_callback_sigcleanup: a new application function that can clean up
 and unset any state set by readline's callback mode.  Intended to be used
 after a signal.

 j.  If an incremental search string has its last character removed with
 DEL, the resulting empty search string no longer matches the previous

 k.  If readline reads a history file that begins with `#' (or the value of
 the history comment character) and has enabled history timestamps, the
 history entries are assumed to be delimited by timestamps.  This allows
 multi-line history entries.

 l.  Readline now throws an error if it parses a key binding without a
 terminating `:' or whitespace.

 m.  The default binding for ^W in vi mode now uses word boundaries
 specified by Posix (vi-unix-word-rubout is bindable command name).

 o.  rl_tty_set_echoing: application-callable function that controls
 whether or not readline thinks it is echoing terminal output.

 p.  Handle >| and strings of digits preceding and following redirection
 specifications as single tokens when tokenizing the line for history

 q.  Fixed a bug with displaying completions when the prefix display length
 is greater than the length of the completions to be displayed.

 r.  The :p history modifier now applies to the entire line, so any
 expansion specifying :p causes the line to be printed instead of expanded.

 s.  New application-callable function: rl_pending_signal(): returns the
 signal number of any signal readline has caught but not yet handled.

 t.  New application-settable variable: rl_persistent_signal_handlers: if
 set to a non-zero value, readline will enable the readline-6.2 signal
 handler behavior in callback mode: handlers are installed when
 rl_callback_handler_install is called and removed removed when a complete
 line has been read.

Ticket URL: <http://wiki.linuxfromscratch.org/lfs/ticket/3982>
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