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grep-2.15 released [stable]

Item posted by Jim Meyering <meyering> on Sat 26 Oct 2013 05:36:15 PM UTC.

This is to announce grep-2.15, a stable, bug-fix release.

There have been 57 commits by 9 people in the 62 weeks since 2.14.
See the NEWS below for a brief summary.

Thanks to everyone who has contributed!
The following people contributed changes to this release:

Corinna Vinschen (1)
Eric Blake (2)
Jaroslav Škarvada (1)
Jim Meyering (31)
Mike Haertel (1)
Paolo Bonzini (3)
Paul Eggert (15)
Petr Pisar (1)
Stefano Lattarini (2)

Jim [on behalf of the grep maintainers]
==================================================================

Here is the GNU grep home page:
http://gnu.org/s/grep/

For a summary of changes and contributors, see:
http://git.sv.gnu.org/gitweb/?p=grep.git;a=shortlog;h=v2.15
or run this command from a git-cloned grep directory:
git shortlog v2.14..v2.15

To summarize the 486 gnulib-related changes, run these commands
from a git-cloned grep directory:
git checkout v2.15
git submodule summary v2.14

Here are the compressed sources and a GPG detached signature[*]:
http://ftp.gnu.org/gnu/grep/grep-2.15.tar.xz
http://ftp.gnu.org/gnu/grep/grep-2.15.tar.xz.sig

Use a mirror for higher download bandwidth:
http://ftpmirror.gnu.org/grep/grep-2.15.tar.xz
http://ftpmirror.gnu.org/grep/grep-2.15.tar.xz.sig

[*] Use a .sig file to verify that the corresponding file (without the
.sig suffix) is intact. First, be sure to download both the .sig file
and the corresponding tarball. Then, run a command like this:

gpg --verify grep-2.15.tar.xz.sig

If that command fails because you don't have the required public key,
then run this command to import it:

gpg --keyserver keys.gnupg.net --recv-keys 7FD9FCCB000BEEEE

and rerun the 'gpg --verify' command.

This release was bootstrapped with the following tools:
Autoconf 2.69.112-f181
Automake 1.99a
Gnulib v0.0-8059-g974b76b

NEWS

* Noteworthy changes in release 2.15 (2013-10-26) [stable]

** Bug fixes

grep's \s and \S failed to work with multi-byte white space characters.
For example, \s would fail to match a non-breaking space, and this
would print nothing: printf '\xc2\xa0' | LC_ALL=en_US.UTF-8 grep '\s'
A related bug is that \S would mistakenly match an invalid multibyte
character. For example, the following would match:
printf '\x82\n' | LC_ALL=en_US.UTF-8 grep '^\S$'
[bug present since grep-2.6]

grep -i would segfault on systems using UTF-16-based wchar_t (Cygwin)
when converting an input string containing certain 4-byte UTF-8
sequences to lower case. The conversions to wchar_t and back to
a UTF-8 multibyte string did not take surrogate pairs into account.
[bug present since at least grep-2.6, though the segfault is new with 2.13]

grep -E would segfault when given a regexp like '([^.]*[M]){1,2}'
for any multibyte character M. [bug introduced in grep-2.6, which would
segfault, but 2.7 and 2.8 had no problem, and 2.9 through 2.14 would
hit a failed assertion. ]

grep -F would get stuck in an infinite loop when given a search string
that is an invalid byte sequence in the current locale and that matches
the bytes of the input twice on a line. Now grep fails with exit status 1.

grep -P could misbehave. While multi-byte mode is only supported by PCRE
with UTF-8 locales, grep did not activate it. This would cause failures
to match multibyte characters against some regular expressions, especially
those including the '.' or '\p' metacharacters.

** New features

grep -P can now use a just-in-time compiler to greatly speed up matches,
This feature is transparent to the user; no flag is required to enable
it. It is only available if the corresponding support in the PCRE
library is detected when grep is compiled.