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grep-3.5 released [stable]

Item posted by Jim Meyering <meyering> on Mon 28 Sep 2020 03:30:42 AM UTC.

This is to announce grep-3.5, a stable release.

Thanks especially to Paul Eggert, Norihiro Tanaka and Bruno Haible
for changes both in grep proper and in gnulib.

There have been 56 commits by 3 people in the 38 weeks since 3.4.

See the NEWS below for a summary.

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

Jim Meyering (22)
Norihiro Tanaka (1)
Paul Eggert (33)

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=v3.5
or run this command from a git-cloned grep directory:
git shortlog v3.4-almost..v3.5

To summarize the 806 gnulib-related changes, run these commands
from a git-cloned grep directory:
git checkout v3.5
git submodule summary v3.4-almost

==================================================================
Here are the compressed sources:
https://ftp.gnu.org/gnu/grep/grep-3.5.tar.gz   (2.6MB)
https://ftp.gnu.org/gnu/grep/grep-3.5.tar.xz   (1.6MB)

Here are the GPG detached signatures[*]:
https://ftp.gnu.org/gnu/grep/grep-3.5.tar.gz.sig
https://ftp.gnu.org/gnu/grep/grep-3.5.tar.xz.sig

Use a mirror for higher download bandwidth:
https://www.gnu.org/order/ftp.html

[*] 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-3.5.tar.gz.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 2.69c
Automake 1.16b
Gnulib v0.1-3927-g02b29b878

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

* Noteworthy changes in release 3.5 (2020-09-27) [stable]

** Changes in behavior

The message that a binary file matches is now sent to standard error
and the message has been reworded from "Binary file FOO matches" to
"grep: FOO: binary file matches", to avoid confusion with ordinary
output or when file names contain spaces and the like, and to be
more consistent with other diagnostics. For example, commands
like 'grep PATTERN FILE | wc' no longer add 1 to the count of
matching text lines due to the presence of the message. Like other
stderr messages, the message is now omitted if the --no-messages
(-s) option is given.

Two other stderr messages now use the typical form too. They are
now "grep: FOO: warning: recursive directory loop" and "grep: FOO:
input file is also the output".

The --files-without-match (-L) option has reverted to its behavior
in grep 3.1 and earlier. That is, grep -L again succeeds when a
line is selected, not when a file is listed. The behavior in grep
3.2 through 3.4 was causing compatibility problems.

** Bug fixes

grep -I no longer issues a spurious "Binary file FOO matches" line.
[Bug#33552 introduced in grep 2.23]

In UTF-8 locales, grep -w no longer ignores a multibyte word
constituent just before what would otherwise be a word match.
[Bug#43225 introduced in grep 2.28]

grep -i no longer mishandles ASCII characters that match multibyte
characters. For example, 'LC_ALL=tr_TR.utf8 grep -i i' no longer
dumps core merely because 'i' matches 'İ' (U+0130 LATIN CAPITAL
LETTER I WITH DOT ABOVE) in Turkish when ignoring case.
[Bug#43577 introduced partly in grep 2.28 and partly in grep 3.4]

A performance regression with -E and many patterns has been mostly fixed.
"Mostly" as there is a performance tradeoff between Bug#22357 and Bug#40634.
[Bug#40634 introduced in grep 2.28]

A performance regression with many duplicate patterns has been fixed.
[Bug#43040 introduced in grep 3.4]

An N^2 RSS performance regression with many patterns has been fixed
in common cases (no backref, and no use of -o or --color).
With only 80,000 lines of /usr/share/dict/linux.words, the following
would use 100GB of RSS and take 3 minutes. With the fix, it used less
than 400MB and took less than one second:
    head -80000 /usr/share/dict/linux.words > w; grep -vf w w
[Bug#43527 introduced in grep 3.4]

** Build-related

"make dist" builds .tar.gz files again, as they are still used in
some barebones builds.