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[ANNOUNCEMENT] Updated: bash-3.1-5


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A new release of bash, 3.1-5, is available, replacing 3.0-9 as the current
version.

NEWS:
=====
This is a new upstream release, and includes all 17 official upstream
patches to date.  It also contains various cygwin-specific patches to
speed up completion within the // file system, to behave correctly with
ACLs, and to behave correctly in the presence of windows-style drive
letter paths.  It also has a new cygwin-specific patch that forces
temporary files used by heredocs to be opened in binary mode, even if /tmp
is mistakenly mounted as textmode.  This release will work with
cygwin-1.5.19-4 or later.  A list of changes from the NEWS file appears
below; see also /usr/share/doc/bash-3.1/.

DESCRIPTION:
============
Bash is an sh-compatible shell that incorporates useful features from the
Korn shell (ksh) and C shell (csh).  It is intended to conform to the IEEE
POSIX P1003.2/ISO 9945.2 Shell and Tools standard.  It offers functional
improvements over sh for both programming and interactive use. In
addition, most sh scripts can be run by Bash without modification.

As of the bash 3.0 series, cygwin /bin/sh defaults to bash, not ash,
similar to Linux distributions.

UPDATE:
=======
To update your installation, click on the "Install Cygwin now" link on the
http://cygwin.com/ web page.  This downloads setup.exe to your system.
Save it and run setup, answer the questions and pick up 'bash' in the
'Base' category (it should already be selected).

DOWNLOAD:
=========
Note that downloads from sources.redhat.com (aka cygwin.com) aren't
allowed due to bandwidth limitations.  This means that you will need to
find a mirror which has this update, please choose the one nearest to you:
http://cygwin.com/mirrors.html

QUESTIONS:
==========
If you want to make a point or ask a question the Cygwin mailing list is
the appropriate place.

- --
Eric Blake
volunteer cygwin bash maintainer

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This is a terse description of the new features added to bash-3.1 since
the release of bash-3.0.  As always, the manual page (doc/bash.1) is
the place to look for complete descriptions.

1.  New Features in Bash

a.  Bash now understands LC_TIME as a special variable so that time display
    tracks the current locale.

b.  BASH_ARGC, BASH_ARGV, BASH_SOURCE, and BASH_LINENO are no longer created
    as `invisible' variables and may not be unset.

c.  In POSIX mode, if `xpg_echo' option is enabled, the `echo' builtin doesn't
    try to interpret any options at all, as POSIX requires.

d.  The `bg' builtin now accepts multiple arguments, as POSIX seems to specify.

e.  Fixed vi-mode word completion and glob expansion to perform tilde
    expansion.

f.  The `**' mathematic exponentiation operator is now right-associative.

g.  The `ulimit' builtin has new options: -i (max number of pending signals),
    -q (max size of POSIX message queues), and -x (max number of file locks).

h.  A bare `%' once again expands to the current job when used as a job
    specifier.

i.  The `+=' assignment operator (append to the value of a string or array) is
    now supported for assignment statements and arguments to builtin commands
    that accept assignment statements.

j.  BASH_COMMAND now preserves its value when a DEBUG trap is executed.

k.  The `gnu_errfmt' option is enabled automatically if the shell is running
    in an emacs terminal window.

l.  New configuration option:  --single-help-strings.  Causes long help text
    to be written as a single string; intended to ease translation.

m.  The COMP_WORDBREAKS variable now causes the list of word break characters
    to be emptied when the variable is unset.

n.  An unquoted expansion of $* when $IFS is empty now causes the positional
    parameters to be concatenated if the expansion doesn't undergo word
    splitting.

o.  Bash now inherits $_ from the environment if it appears there at startup.

p.  New shell option: nocasematch.  If non-zero, shell pattern matching ignores
    case when used by `case' and `[[' commands.

q.  The `printf' builtin takes a new option: -v var.  That causes the output
    to be placed into var instead of on stdout.

r.  By default, the shell no longer reports processes dying from SIGPIPE.

s.  Bash now sets the extern variable `environ' to the export environment it
    creates, so C library functions that call getenv() (and can't use the
    shell-provided replacement) get current values of environment variables.

t.  A new configuration option, `--enable-strict-posix-default', which will
    build bash to be POSIX conforming by default.

u.  If compiled for strict POSIX conformance, LINES and COLUMNS may now
    override the true terminal size.

2.  New Features in Readline

a.  The key sequence sent by the keypad `delete' key is now automatically
    bound to delete-char.

b.  A negative argument to menu-complete now cycles backward through the
    completion list.

c.  A new bindable readline variable:  bind-tty-special-chars.  If non-zero,
    readline will bind the terminal special characters to their readline
    equivalents when it's called (on by default).

d.  New bindable command: vi-rubout.  Saves deleted text for possible
    reinsertion, as with any vi-mode `text modification' command; `X' is bound
    to this in vi command mode.

e.  A new external application-controllable variable that allows the LINES
    and COLUMNS environment variables to set the window size regardless of
    what the kernel returns: rl_prefer_env_winsize


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