wok-next annotate grep/description.txt @ rev 19764

Patch python, up cookutils.
author Aleksej Bobylev <al.bobylev@gmail.com>
date Sun Jun 11 00:18:04 2017 +0300 (2017-06-11)
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al@19222 1 This is GNU grep, the "fastest grep in the west" (we hope). All bugs reported
al@19222 2 in previous releases have been fixed. Many exciting new bugs have probably been
al@19222 3 introduced in this revision.
al@19222 4
al@19222 5 GNU grep is provided "as is" with no warranty. The exact terms under which you
al@19222 6 may use and (re)distribute this program are detailed in the GNU General Public
al@19222 7 License.
al@19222 8
al@19222 9 GNU grep is based on a fast lazy-state deterministic matcher (about twice as
al@19222 10 fast as stock Unix egrep) hybridized with a Boyer-Moore-Gosper search for a
al@19222 11 fixed string that eliminates impossible text from being considered by the full
al@19222 12 regexp matcher without necessarily having to look at every character. The
al@19222 13 result is typically many times faster than Unix grep or egrep. (Regular
al@19222 14 expressions containing backreferencing will run more slowly, however.)
al@19222 15
al@19222 16 Send bug reports to bug-grep@gnu.org.
al@19222 17
al@19222 18
al@19222 19 KNOWN BUGS:
al@19222 20
al@19222 21 Several tests in fmbtest.sh and foad1.sh fail under the cs_CZ.UTF-8 locale
al@19222 22 and have been disabled.
al@19222 23
al@19222 24 The combination of -o and -i options is broken and the known failing cases
al@19222 25 are disabled in foad1.sh
al@19222 26
al@19222 27 The option -i does not work properly in some multibyte locales such as
al@19222 28 tr_TR.UTF-8 where the upper case and lower case forms of a character are not
al@19222 29 necessarily of the same byte length.