This is the revision history for re in <freenode.net:#regex>

factoid_idsubjectcopulapredicateauthornamespace
16024 re is `compose `eval use PPR; $x=`quote d `arg!!; ($l, $r) = ($x=~m/((?&PerlSubstitution))\s+(.*)$PPR::GRAMMAR/); $_=$r; s/'/\\'/; sprintf '[eval $x=\'%s\'; $x =~ %s; "output: ".$x]', $_, $l;!!
Compose failed to find a plugin named: a-fA-F0-9
digitok