2010年3月24日

[installer 2304] GNU grep-2.6

GNU grep-2.6 出ています。

☆ GNU grep-2.6
http://www.gnu.org/software/grep/
http://ftp.gnu.org/gnu/grep/grep-2.6.tar.gz
ftp://ftp.gnu.org/gnu/grep/grep-2.6.tar.gz

* Noteworthy changes in release 2.6 (2010-03-23) [stable]


** Speed improvements

grep is much faster on multibyte character sets, especially (but not
limited to) UTF-8 character sets. The speed improvement is also very
pronounced with case-insensitive matches.

** Bug fixes

Character classes would malfunction in multi-byte locales when using grep -i.
Examples which would print nothing for LC_ALL=en_US.UTF-8 include:
- for ranges, echo Z | grep -i '[a-z]'
- for single characters, echo Y | grep -i '[y]'
- for character types, echo Y | grep -i '[[:lower:]]'

grep -i -o would fail to report some matches; grep -i --color, while not
missing any line containing a match, would fail to color some matches.

grep would fail to report a match in a multibyte character set other than
UTF-8, if another match occurred earlier in the line but started in the
middle of a multibyte character.

Various bugs in grep -P, caused by expressions such as [^b] or \S matching
newlines, were fixed. grep -P also supports the special sequences \Z and
\z, and can be combined with the command-line option -z to perform searches
on NUL-separated records.

grep would mistakenly exit with status 1 upon error, rather than 2,
as it is documented to do.

Using options like -1 -2 or -1 -v -2 results in two lines of
context (the last value that appears on the command line) instead
twelve (the concatenation of all the values). This is consistent
with the behavior of options -A/-B/-C.

Two new command-line options, --group-separator=ARGUMENT and
--no-group-separator, enable further customization of the output
when -A, -B or -C is being used.

** Other changes

egrep accepts the -E option and fgrep accepts the -F option. If egrep
and fgrep are given another of the -E/-F/-G options, they print a more
meaningful error message.

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こがよういちろう


投稿者 xml-rpc : 2010年3月24日 16:08
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