SPUG: minimal unmatching regex

[Ken Clarke]

Late to the party but I love regexes.

Patrick's /[^\w\W]/ made me think of /[\d\D]/ or /[\s\S]/ or any character 
class containing complementary subsets

My own invention is /^^/  or /$$/ or any match which can only occur once 
occuring twice

Still, my vote goes to Ingy's /.^/ because not only does it use the least 
characters (at least I havn't seen any single character candidate), but it 
also uses the least ink :)

>> Ken