I've attached a (slightly) modded ebuild that builds perl regexp support based on the perl and -perl use flags. I see this as a slightly better alternative then actually not supporting it by default. Reproducible: Always Steps to Reproduce: 1.emerge grep 2.perl regexp support disabled by default 3.
Created attachment 31530 [details] Grep ebuild that supports perl USE flags
*** Bug 51216 has been marked as a duplicate of this bug. ***
Added grep-2.5.1-r2.ebuild to CVS for testing.