From: ts <decoux@...>
Date: 2001-05-15T23:50:37+09:00
Subject: [ruby-talk:15167] Regexp (a)|\1


 Apparently ruby can match a group which have never matched, normal ?

pigeon% ruby -e 'puts "OK #$&" if /(a)|\1/ =~ "x"'
OK 
pigeon% 

Guy Decoux