newsgrep - News: grep-2.24 released [stable]

 
 
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grep-2.24 released [stable]

Item posted by Jim Meyering <meyering> on Fri 11 Mar 2016 06:01:22 AM UTC.

This is to announce grep-2.24, a stable bug-fix-only release.
This release, so soon after 2.23, was prompted by the discovery
of two bugs related to the --null-data (-z) option.
These bugs were introduced in 2010 and 2002 respectively.

There have been 8 commits by 2 people in the 5 weeks since 2.23.

See the NEWS below for a brief summary.

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

  Jim Meyering (7)
  Paul Eggert (1)

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=v2.24
or run this command from a git-cloned grep directory:
  git shortlog v2.23..v2.24

Here are the compressed sources and a GPG detached signature[*]:
  http://ftp.gnu.org/gnu/grep/grep-2.24.tar.xz
  http://ftp.gnu.org/gnu/grep/grep-2.24.tar.xz.sig

Use a mirror for higher download bandwidth:
  http://ftpmirror.gnu.org/grep/grep-2.24.tar.xz
  http://ftpmirror.gnu.org/grep/grep-2.24.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-2.24.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 2.69.147-5ad35
  Automake 1.99a
  Gnulib v0.1-697-gcd6a452

==================================================================
NEWS

* Noteworthy changes in release 2.24 (2016-03-10) [stable]

** Bug fixes

  grep -z would match strings it should not.  To trigger the bug, you'd
  have to use a regular expression including an anchor (^ or $) and a
  feature like a range or a backreference, causing grep to forego its DFA
  matcher and resort to using re_search.  With a multibyte locale, that
  matcher could mistakenly match a string containing a newline.
  For example, this command:
    printf 'a\nb\0' | LC_ALL=en_US.utf-8 grep -z '^[a-b]*b'
  would mistakenly match and print all four input bytes.  After the fix,
  there is no match, as expected.
  [bug introduced in grep-2.7]

  grep -Pz now diagnoses attempts to use patterns containing ^ and $,
  instead of mishandling these patterns.  This problem seems to be
  inherent to the PCRE API; removing this limitation is on PCRE's
  maint/README wish list.  Patterns can continue to match literal ^
  and $ by escaping them with \ (now needed even inside [...]).
  [bug introduced in grep-2.5]

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