>>>>> "C" == Christian Kaiser <chk / online.de> writes:

C> Maybe I need some good literature on that to find out where and when such a
C> thing could happen.

 Well, you have perhaps the best case : what you must see is that the
 regexp engine want really, really match, and for this it will try all
 combinations possibles. 

 In some case (regexp with combination of more than one quantifier) it will
 take exponential time to  try all possibilities and you just need to be
 patient :-)



Guy Decoux