Bug in grep -P --color

[Behdad Esfahbod]

Hi

I think I have spotted a nasty bug somewhere in the perl-regexp
engine, with UTF-8 character classes and --color output!

Please run the attached shell script, the output from -G, -E, and
-P should all be the same, but in two cases the -P generates
garbage (at least on my setup.)  The test data is using Arabic
script.  A UTF-8 enabled terminal emulator and at least one
Arabic font is enough to confirm the bug, no need to be able to
read Arabic.

address@hidden search]$ grep --version
grep (GNU grep) 2.5.1


It's a Fedora Core 3 updated machine.


--behdad
http://behdad.org/

grep-bug
Description: Text document