Perl-Compatible Regular Expressions. A superset of Regular Expressions with a few extra features introduced by [Perl], less a couple of features that could not be enforced without [Perl] itself. Welcome by many, hated by many others.

http://www.pcre.org/man.txt

----
[DKF] - Wow.  There's more Features from the Black Lagoon in there than you can shake a B-Movie at...
----
[[
[Category Acronym]
]]