Re: Bash-5.1-rc3 available

[Alex fxmbsw7 Ratchev]

is this --branch bash-5.1-testing stilk actual, or should i use devel

On Wed, Nov 18, 2020, 17:03 Chet Ramey <chet.ramey@case.edu> wrote:

> The third release candidate of bash-5.1 is now available with the URL
>
> ftp://ftp.cwru.edu/pub/bash/bash-5.1-rc3.tar.gz
>
> and from the bash-5.1-testing branch in the bash git repository
> (http://git.savannah.gnu.org/cgit/bash.git/log/?h=bash-5.1-testing).
> You can use
>
> git clone --branch bash-5.1-testing git://git.savannah.gnu.org/bash.git
>
> to clone the testing branch.
>
> The CWRU FTP site works best if your client supports Extended Passive
> (EPSV) mode.
>
> This tar file includes the formatted documentation (you should be able to
> generate updated versions yourself).
>
> This release fixes several outstanding bugs in bash-5.0 and introduces
> several new features.  The most significant change is a return to the
> bash-4.4 behavior of not performing pathname expansion on a word that
> contains backslashes but does not contain any unquoted globbing special
> characters.  This comes after a long POSIX discussion that resulted in a
> change to the standard.  There are several changes regarding trap handling
> while reading from the terminal (e.g, for `read' and `select'.) There are a
> number of bug fixes, including several bugs that caused the shell to
> crash.
> Details are appended.
>
> The most notable new features are in the random number engine. There is a
> new variable, SRANDOM, which gets its random data from the system's entropy
> engine and so is not linear and cannot be reseeded to get an identical
> random sequence. The PROMPT_COMMANDS array variable can be used to run
> multiple commands before printing the primary prompt. Associative arrays
> may
> be assigned using a series of key-value pairs within a compound assignment.
> `wait' has a new `-p' option which stores PID information about the process
> reaped by `wait -n'. Process substitution is now available in posix mode.
> There are new parameter transformation operators. There is no new
> `compat50'
> option; use the BASH_COMPAT variable to select the compatibility level.
> All the new features are described below.
>
> The most visible new feature is in Readline: the addition of `faces', which
> highlights the text between the point and mark (the region, so this is also
> called the 'active region'). This was added to show visibly the text
> inserted by bracketed paste, and also marks the text found by incremental
> and non-incremental history searches.  Faces are currently tied to
> bracketed paste and are enabled and disabled along with bracketed paste
> mode.  Bracketed paste mode is enabled by default.
>
> There are a few incompatible changes between bash-5.0 and bash-5.1. The
> change to pathname expansion means that words containing backslashes, but
> no
> special globbing characters, will not undergo pathname expansion. While
> the bash-5.0 behavior was POSIX-conformant, the change was not
> well-received.
> Changes to the random number engines mean that seeding RANDOM will produce
> a different numeric sequence. Set the compatibility level to 50 to revert
> to the bash-5.0 behavior.
>
> `bashbug' may be used to report bugs with this version.  It will send
> mail to chet.ramey@case.edu if the shell's `release status' is alpha or
> beta.
>
> As always, thanks for your help.
>
> Chet
>
> +========== CHANGES ==========+
> This document details the changes between this version, bash-5.1-rc3, and
> the previous version, bash-5.1-rc2.
>
> 1. Changes to Bash
>
> a. The `assoc_expand_once' option now affects the evaluation of the -v
> primary
>    to test and the [[ compound command.
>
> 2. Changes to Readline
>
> a. Fixed a bug that could cause point to be set beyond the end of the line
>    buffer when aborting an incremental search.
>
> 3. New Features in Bash
>
> 4. New Features in Readline
>
>
> ------------------------------------------------------------------------------
> This document details the changes between this version, bash-5.1-rc2, and
> the previous version, bash-5.1-rc1.
>
> 1. Changes to Bash
>
> a. Process substitutions started from an interactive shell no longer have
> their
>    standard input implicitly redirected from /dev/null.
>
> b. Fixed an issue with setting the SIGINT trap handler in an interactive
> shell
>    when temporarily running $PROMPT_COMMAND non-interactively.
>
> 2. Changes to Readline
>
> a. Terminals that are named "dumb" or unknown do not enable bracketed paste
>    by default.
>
> b. Ensure that disabling bracketed paste turns off highlighting the
> incremental
>    search string when the search is successful.
>
> 3. New Features in Bash
>
> 4. New Features in Readline
>
>
> ------------------------------------------------------------------------------
> This document details the changes between this version, bash-5.1-rc1, and
> the previous version, bash-5.1-beta.
>
> 1. Changes to Bash
>
> a. Fixed an inconsistency in the way HISTCMD is calculated when it's
> expanded
>    during a multi-line command.
>
> b. Modified the change to here-document expansion containing
> backslash-quoted
>    double quotes.
>
> c. Fixed a case where the shells's exit status could be greater than 255.
>
> d. Modified changed to process substitution so the executed command has its
>    stdin redirected from /dev/null if it was previously interactive and
>    reading commands from the terminal.
>
> 2. New Features in Bash
>
> a. There is a new contributed loadable builtin: asort.
>
> 3. Changes to Readline
>
> a. Fixed a bug that could cause an application with an application-specific
>    redisplay function to crash if the line data structures had not been
>    initialized.
>
> 4. New Features in Readline
>
>
> ------------------------------------------------------------------------------
> This document details the changes between this version, bash-5.1-beta, and
> the previous version, bash-5.1-alpha.
>
> 1. Changes to Bash
>
> a. Fixed a bug that caused name references to variables to not update the
>    referenced variable's assignment side effects.
>
> b. Tightened up the parameter transformation error checking for invalid
>    transformation operators.
>
> c. System-specific changes for: FreeBSD
>
> d. A few minor changes to move potential uses of stdio functions out of
> signal
>    handling paths.
>
> e. Make sure SIGCHLD is blocked in all cases where waitchld() is not called
>    from a signal handler.
>
> f. Changed `command' builtin processing so it no longer starts an extra
> process
>    when run asynchronously (command x &).
>
> g. Avoid performing tilde expansion after `:' in words that look like
> assignment
>    statements when in posix mode.
>
> h. Slight changes to how the `complete' builtin prints out options and
> actions
>    for completion specifications.
>
> i. Several changes to how `local -' restores the values of options and
>    $SHELLOPTS.
>
> j. Don't treat a word in a compound assignment as an assignment statement
>    unless it has a valid subscript before the `='.
>
> k. Fixed a bug with the DEBUG trap and process substitution that caused the
>    terminal's process group to be set incorrectly.
>
> l. Fixed a bug that left readline's signal handlers installed while
> running a
>    shell command from a bindable readline command.
>
> m. Fixed the `fc' builtin to clamp out of range history specifications at
> the
>    boundaries of the history list for POSIX conformance.
>
> n. Fixed a bug that caused ${foo@a} to treat foo as an unset variable if
> it
>    was an array without a value for subscript 0/"0" but had other set
>    elements.
>
> o. Fixed a bug that caused the history code to attempt to parse command
>    substitutions looking for shell comments before adding them to the
> history,
>    even while parsing here-documents.
>
> p. Fixed a bug that could cause a syntax error in a command read by `eval'
> to
>    exit an interactive shell.
>
> 2. New Features in Bash
>
> a. If the hash builtin is listing hashed filenames portably, don't print
>    anything if the table is empty.
>
> b. GLOBIGNORE now ignores `.' and `..' as a terminal pathname component.
>
> c. Bash attempts to optimize away forks in the last command in a function
> body
>    under appropriate circumstances.
>
> d. The globbing code now uses fnmatch(3) to check collation elements (if
>    available) even in cases without multibyte characters.
>
> e. The `fg' and `bg' builtins now return an error in a command substitution
>    when asked to restart a job inherited from the parent shell.
>
> f. The shell now attempts to unlink all FIFOs on exit, whether a consuming
>    process has finished with them or not.
>
> 3. Changes to Readline
>
> a. Make sure that all undo groups are closed when leaving vi insertion
> mode.
>
> b. Make sure that the vi-mode `C' and `c' commands enter insert mode even
> if
>    the motion command doesn't have any effect.
>
> c. Fixed several potential memory leaks in the callback mode context
> handling.
>
> d. If readline is handling a SIGTTOU, make sure SIGTTOU is blocked while
>    executing the terminal cleanup code, since it's no longer run in a
> signal
>    handling context.
>
> 4. New Features in Readline
>
> a. The signal cleanup code now blocks SIGINT while processing after a
> SIGINT.
>
>
> ------------------------------------------------------------------------------
> This document details the changes between this version, bash-5.1-alpha, and
> the previous version, bash-5.0-release.
>
> 1. Changes to Bash
>
> a. Fixed a bug that caused a posix-mode shell to not exit if the return
> builtin
>    was executed outside a function or dot script.
>
> b. Fixed a bug where `declare +f' could potentially turn off the function
>    attribute.
>
> c. Restored bash-4.4 pathname expansion behavior when a word to be
> expanded had
>    only backslashes, not any of the other globbing characters. This came
> after
>    an extensive POSIX group discussion (interp #1234).
>
> d. There are more changes to avoid performing word expansions multiple
> times on
>    arithmetic expressions.
>
> e. Fixed a bug with alias expansion when the alias ends with a TAB.
>
> f. Fixed a bug that caused programmable completion to return an error if
> the
>    shell function name supplied as an argument to `complete -F' was
> invalid.
>
> g. There are several fixes to buffer overflows found as the result of
> fuzzing
>    with random input.
>
> h. Fixed a bug that caused the edit-and-execute-command editing command to
>    start with the previous history line if invoked on an empty line.
>
> i. Fixed a bug that potentially caused `bind --help' to change readline's
>    output stream.
>
> j. Turning off posix mode now restores the vi-insertion mode binding for
> TAB
>    that was in effect when posix mode was enabled.
>
> k. Restore the previous state of job control being enabled if `exec' fails
> in
>    an interactive shell.
>
> l. Fixed a bug that caused the terminal's process group to be set
> incorrectly
>    if job control was turned off before starting an interactive shell.
>
> m. Fixed a bug that caused a crash when HISTSIZE=0.
>
> n. Fixed a word expansion bug that caused null strings on the rhs of
> expansions
>    to be discarded incorrectly.
>
> o. History list management does a better job of handling the situation
> where
>    the number of history entries from the current shell session is greater
> than
>    the number of entries in the history list.
>
> p. Fixed a bug that caused the `fc' builtin to attempt to dereference a
> newly-
>    freed history entry.
>
> q. Fixed a bug that made the `Q' variable transformation not work well with
>    `set -u'.
>
> r. There are several word expansion fixes for expanding $* and $@ in
> contexts
>    where word splitting is not going to be performed, since each positional
>    parameter must expand to a separate word.
>
> s. Fixed a bug that could cause ^D to exit bash immediately even if there
> were
>    stopped jobs.
>
> t. Fixed a bug with double-quoting and backslash-quoting strings containing
>    multibyte characters for reuse.
>
> u. Fixed a bug that caused the line number to be reported incorrectly if
> the
>    shell executed a (command) subshell.
>
> v. Fixed a bug that caused the shell to fail to reap process substitutions
>    when they went out of scope, which had unpredictable results.
>
> w. Fixed a bug that caused null strings in arguments to [[ conditional
> command
>    operators to compare incorrectly.
>
> x. Changed the behavior of `wait' without arguments to only wait for
> background
>    processes the current shell instance started, not background children
> it may
>    have inherited.
>
> y. Fixed a bug that could cause command substitution to leave file
> descriptors
>    open if the shell received many SIGINTs.
>
> z. Bash now behaves better if the `**' filename expansion operator
> encounters a
>    symbolic link to a directory, avoiding more cases where it might return
>    duplicate pathnames.
>
> aa. Programmable completion now canonicalizes directory names in the same
> way
>     as bash word completion, so `..' is handled consistently.
>
> bb. Fixed a bug when using RETURN as the delimiter to the read builtin; it
>     caused readline to set the binding for RETURN incorrectly.
>
> cc. Fixed a bug that caused `history -d' to delay printing an out-of-range
>     error message.
>
> dd. Fixed a bug with `bash -c command' where `command' ends with an
> expanded
>     alias.
>
> ee. Fixed a bug that could result in `history -n' adding spurious line
> feeds to
>     commands in the history list.
>
> ff. The $RANDOM random number generator now XORs the top and bottom halves
> of
>     the internal 32-bit value to introduce more randomness. Setting the
> shell
>     compatibility level to 50 or lower undoes this.
>
> gg. Fixed several problems caused by running the DEBUG trap on simple
> commands
>     executed as part of a pipeline.
>
> ii. Fixed a bug that didn't allow `bind -r' to remove the binding for \C-@
> .
>
> jj. Several fixes to the bash-backward-shellword bindable readline command
> to
>     behave better when at the last character on the line.
>
> kk. If `set -x' is enabled, bash doesn't print a command twice if it's run
> by
>     the `command' builtin.
>
> ll. Fixed a bug with printing function definitions containing here
> documents.
>
> mm. Fixed a bug that could cause the `bind' builtin to set $? to -1.
>
> nn. Fixed a bug that didn't reset the timezone information correctly when
> the
>     TZ variable was unset.
>
> oo. Fixed several issues with assigning an associative array variable
> using a
>     compound assignment that expands the value of the same variable.
>
> pp. Fixed several places where the shell set $? without setting PIPESTATUS.
>
> qq. Fixed a problem with glob bracket expressions containing invalid
> character
>     classes, collating symbols, or equivalence classes -- they should not
>     require a closing right bracket.
>
> rr. Fixed a bug where running a builtin in a subshell did not run the EXIT
> trap.
>
> ss. Fixed several problems with posix-mode variable assignments preceding
>     shell function calls and posix special builtins, so that they create
> and
>     modify variables at the current scope.
>
> tt. Fix history initialization so `bash +o history' works as expected.
>
> uu. Fixed a bug in the bindable edit-and-execute-command command that could
>     interfere with the shell's parsing state.
>
> vv. Fixed an issue with nested traps running command substitutions in
> command
>     lines with command substitutions.
>
> ww. Fixed a bug with globbing pathnames that contain invalid multibyte
>     characters (sequences that don't correspond to a character in the
> current
>     locale).
>
> xx. Fixed a bug that caused the shell not to exit if a function definition
>     failed while errexit was enabled.
>
> yy. Process substitution processes now get their input from /dev/null,
> since
>     they are asynchronous, not interactive, and not jobs.
>
> zz. Setting nocaseglob no longer turns on case-insensitive regexp matching.
>
> aaa. Fixed a bug that resulted in extra blank lines being added to some
> history
>      entries containing here-documents.
>
> bbb. Fixed a bug that resulted in incorrect matching of some patterns in
> word
>      expansion if they expanded to the empty string.
>
> ccc. Fixed here-string expansion so it behaves the same as expansion of the
>      rhs of an assignment statement.
>
> ddd. Changed here-document parsing to no longer allow the end of the here
>      document to delimit a command substitution.
>
> eee. Several fixes to history expansion: multiple :p modifiers work, a ^
> word
>      designator works as part of a range, and a `-' is treated as part of a
>      search string if it immediately follows a `!'.
>
> fff. Fixed a bug in pattern substitution with null matches in a string
>      containing multibyte characters.
>
> ggg. Unbinding a key sequence bound with `bind -x' now removes the key
> sequence
>      from the additional keymap `bind -x' uses.
>
> hhh. Fixed a bug with command start detection for completion so that it
> doesn't
>      mistake brace expansion for the start of a command.
>
> iii. Fixed a bug that caused local variables with the same name as
> variables
>      appearing in a function's temporary environment to not be marked as
> local.
>
> jjj. Fixed a bug that could cause SIGCHLD to be blocked when executing
> return
>      or exec in the rightmost pipeline element with lastpipe enabled.
>
> kkk. Fixed a bug that could result in commands without the execute bit set
>      being added to the command hash table.
>
> lll. Fixed a bug that allowed non-digits to follow the `#' in a
> `base#number'
>      integer constant.
>
> mmm. Fixed a bug that made `time -- command' attempt to execute `--'.
>
> nnn. Fixed a couple of bugs with variable transformation using arrays
>      subscripted with `*' or `@'.
>
> ooo. A failure to create a variable using `declare' in a function no longer
>      causes the function to return immediately.
>
> ppp. Fixed a bug that could cause the := word expansion to add a non-null
>      value if attempting to assign a null string when double-quoted.
>
> qqq. Fixed a bug that could cause backslashes quoting double quotes in here
>      document bodies to not be removed when expanding the body.
>
> rrr. Fixed a bug that caused commands following a subshell while the shell
> is
>      reading input from stdin but not interactive, while job control is
>      enabled, to be executed twice.
>
> sss. Fixed a bug where receiving SIGTERM from a different process while
>      readline was active could cause the shell to terminate.
>
> ttt. In posix mode, running a trap after the read builtin now sees the exit
>      status of the read builtin (e.g., 130 after a SIGINT) in $?.
>
> uuu. Fixed a bug with nameref variables referencing array subscripts used
> in
>      arithmetic expressions.
>
> vvv. Fixed a bug that caused the pipeline process group id to be reset in
> the
>      middle of a command list run by a shell started to run a command
>      substitution.
>
> www. Restricted shells can no longer read and write history files with
> pathnames
>      containing slashes.
>
> xxx. Fixed a couple of problems with 0 and -0 used as arguments to `fc'
> when
>      not listing commands from the history.
>
> yyy. When `test' is supplied four or more arguments, treat an argument that
>      looks like an operator (e.g., -e), but is in a place where only a
> string
>      is valid, as a string, as it would be when using the POSIX rules,
> instead
>      of an operator with a missing argument.
>
> zzz. There is no `compat50' shopt option. Changes to the shell
> compatibility
>      level should use the BASH_COMPAT variable.
>
> aaaa. Redirection failures with compound commands are now treated as errors
>       that cause the shell to exit if `errexit' is enabled.
>
> bbbb. Redirection failure error messages no longer expand the word in the
>       redirection again.
>
> cccc. History expansion is no longer performed while parsing a
> here-document
>       inside a command substitution.
>
> 2. Changes to Readline
>
> a. There are a number of fixes that were found as the result of fuzzing
> with
>    random input.
>
> b. Changed the revert-all-at-newline behavior to make sure to start at the
> end
>    of the history list when doing it, instead of the line where the user
> hit
>    return.
>
> c. When parsing `set' commands from the inputrc file or an application,
> readline
>    now allows trailing whitespace.
>
> d. Fixed a bug that left a file descriptor open to the history file if the
>    file size was 0.
>
> e. Fixed a problem with binding key sequences containing meta characters.
>
> f. Fixed a bug that caused the wrong line to be displayed if the user
> tried to
>    move back beyond the beginning of the history list, or forward past the
> end
>    of the history list.
>
> g. If readline catches SIGTSTP, it now sets a hook that allows the calling
>    application to handle it if it desires.
>
> h. Fixed a redisplay problem with a prompt string containing embedded
> newlines.
>
> i. Fixed a problem with completing filenames containing invalid multibyte
>    sequences when case-insensitive comparisons are enabled.
>
> j. Fixed a redisplay problem with prompt strings containing invisible
> multibyte
>    characters.
>
> k. Fixed a problem with multibyte characters mapped to editing commands
> that
>    modify the search string in incremental search.
>
> l. Fixed a bug with maintaining the key sequence while resolving a bound
>    command in the presence of ambiguous sequences (sequences with a common
>    prefix), in most cases while attempting to unbind it.
>
> m. Fixed several buffer overflows found as the result of fuzzing.
>
> n. Reworked backslash handling when translating key sequences for key
> binding
>    to be more uniform and consistent, which introduces a slight backwards
>    incompatibility.
>
> o. Fixed a bug with saving the history that resulted in errors not being
>    propagated to the calling application when the history file is not
> writable.
>
> p. Readline only calls chown(2) on a newly-written history file if it
> really
>    needs to, instead of having it be a no-op.
>
> q. Readline now behaves better when operate-and-get-next is used when the
>    history list is `full': when there are already $HISTSIZE entries.
>
> r. Fixed a bug that could cause vi redo (`.') of a replace command not to
> work
>    correctly in the C or POSIX locale.
>
> 3. New Features in Bash
>
> a. `bind -x' now supports different bindings for different editing modes
> and
>    keymaps.
>
> b. Bash attempts to optimize the number of times it forks when executing
>    commands in subshells and from `bash -c'.
>
> c. Here documents and here strings now use pipes for the expanded document
> if
>    it's smaller than the pipe buffer size, reverting to temporary files if
> it's
>    larger.
>
> d. There are new loadable builtins: mktemp, accept, mkfifo, csv, cut/lcut
>
> e. In posix mode, `trap -p' now displays signals whose disposition is
> SIG_DFL
>    and those that were SIG_IGN when the shell starts.
>
> f. The shell now expands the history number (e.g., in PS1) even if it is
> not
>    currently saving commands to the history list.
>
> g. `read -e' may now be used with arbitrary file descriptors (`read -u N').
>
> h. The `select' builtin now runs traps if its internal call to the read
> builtin
>    is interrupted by a signal.
>
> i. SRANDOM: a new variable that expands to a 32-bit random number that is
> not
>    produced by an LCRNG, and uses getrandom/getentropy, falling back to
>    /dev/urandom or arc4random if available. There is a fallback generator
> if
>    none of these are available.
>
> j. shell-transpose-words: a new bindable readline command that uses the
> same
>    definition of word as shell-forward-word, etc.
>
> k. The shell now adds default bindings for shell-forward-word,
>    shell-backward-word, shell-transpose-words, and shell-kill-word.
>
> l. Bash now allows ARGV0 appearing in the initial shell environment to set
> $0.
>
> m. If `unset' is executed without option arguments, bash tries to unset a
> shell
>    function if a name argument cannot be a shell variable name because
> it's not
>    an identifier.
>
> n. The `test -N' operator uses nanosecond timestamp granularity if it's
>    available.
>
> o. Bash posix mode now treats assignment statements preceding shell
> function
>    definitions the same as in its default mode, since POSIX has changed and
>    no longer requires those assignments to persist after the function
> returns
>    (POSIX interp 654).
>
> p. BASH_REMATCH is no longer readonly.
>
> q. wait: has a new -p VARNAME option, which stores the PID returned by
> `wait -n'
>    or `wait' without arguments.
>
> r. Sorting the results of pathname expansion now uses byte-by-byte
> comparisons
>    if two strings collate equally to impose a total order; the result of a
>    POSIX interpretation (#963 and #1070).
>
> s. Bash now allows SIGINT trap handlers to execute recursively.
>
> t. Bash now saves and restores state around setting and unsetting posix
> mode,
>    instead of having unsetting posix mode set a known state.
>
> u. Process substitution is now available in posix mode.
>
> v. READLINE_MARK: a new variable available while executing commands bound
> with
>    `bind -x', contains the value of the mark.
>
> w. Bash removes SIGCHLD from the set of blocked signals if it's blocked at
> shell
>    startup.
>
> x. `test -v N' can now test whether or not positional parameter N is set.
>
> y. `local' now honors the `-p' option to display all local variables at the
>     current context.
>
> z. The `@a' variable transformation now prints attributes for unset array
>    variables.
>
> aa. The `@A' variable transformation now prints a declare command that
> sets a
>     variable's attributes if the variable has attributes but is unset.
>
> bb. `declare' and `local' now have a -I option that inherits attributes and
>     value from a variable with the same name at a previous scope.
>
> cc. When run from a -c command, `jobs' now reports the status of completed
> jobs.
>
> dd. New `U', `u', and `L' parameter transformations to convert to
> uppercase,
>     convert first character to uppercase, and convert to lowercase,
>     respectively.
>
> ee. PROMPT_COMMAND: can now be an  array variable, each element of which
> can
>     contain a command to be executed like a string PROMPT_COMMAND variable.
>
> ff. `ulimit' has a -R option to report and set the RLIMIT_RTTIME resource.
>
> gg. Associative arrays may be assigned using a list of key-value pairs
> within
>     a compound assignment. Compound assignments where the words are not of
>     the form [key]=value are assumed to be key-value assignments. A
> missing or
>     empty key is an error; a missing value is treated as NULL. Assignments
> may
>     not mix the two forms.
>
> hh. New `K' parameter transformation to display associative arrays as key-
>     value pairs.
>
> ii. Writing history to syslog now handles messages longer than the syslog
> max
>     length by writing multiple messages with a sequence number.
>
> jj. SECONDS and RANDOM may now be assigned using arithmetic expressions,
> since
>     they are nominally integer variables. LINENO is not an integer
> variable.
>
> kk. Bash temporarily suppresses the verbose option when running the DEBUG
> trap
>     while running a command from the `fc' builtin.
>
> ll. `wait -n' now accepts a list of job specifications as arguments and
> will
>     wait for the first one in the list to change state.
>
> mm. The associative array implementation can now dynamically increase the
>     size of the hash table based on insertion patterns.
>
> nn. HISTFILE is now readonly in a restricted shell.
>
> oo. The bash malloc now returns memory that is 16-byte aligned on 64-bit
>     systems.
>
> 4. New Features in Readline
>
> a. If a second consecutive completion attempt produces matches where the
> first
>    did not, treat it as a new completion attempt and insert a match as
>    appropriate.
>
> b. Bracketed paste mode works in more places: incremental search strings,
> vi
>    overstrike mode, character search, and reading numeric arguments.
>
> c. Readline automatically switches to horizontal scrolling if the terminal
> has
>    only one line.
>
> d. Unbinding all key sequences bound to a particular readline function now
>    descends into keymaps for multi-key sequences.
>
> e. rl-clear-display: new bindable command that clears the screen and, if
>    possible, the scrollback buffer (bound to emacs mode M-C-l by default).
>
> f. New active mark and face feature: when enabled, it will highlight the
> text
>    inserted by a bracketed paste (the `active region') and the text found
> by
>    incremental and non-incremental history searches. This is tied to
> bracketed
>    paste and can be disabled by turning off bracketed paste.
>
> g. Readline sets the mark in several additional commands.
>
> h. Bracketed paste mode is enabled by default.
>
> i. Readline tries to take advantage of the more regular structure of UTF-8
>    characters to identify the beginning and end of characters when moving
>    through the line buffer.
>
> j. The bindable operate-and-get-next command (and its default bindings) are
>    now part of readline instead of a bash-specific addition.
>
> --
> ``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/
>
>