bug#17025: [PATCH] grep: matching line-by-line with regex

[Norihiro Tanaka]

Package: grep
Tags: patch

I ran following test, which used the regex enging in non-UTF8 locale.

$ yes abcd.abc | head -10000 > m
$ time -p env LC_ALL=ja_JP.eucJP src/grep abcd.abd m
real 7.28
user 6.36
sys 0.57

It's extremally slow.  When regex engine is used in grep, a text is
splitted by line.  However all of buffer is passed to re_search and
re_match.  I seem that it's wrong.

Norihiro

patch1.txt
Description: Text document