Jakob Hirsch wrote: > > Oh, cool, I didn't know that. Where is this documented? And is this > still true if you run egrep and therefore tell grep to use the pattern > as an extended regex? (hm, probably yes...)
That's the nature of a regexp. The regexp language is designed to be compilable into an FSM (as long as backrefs aren't used) which can be run very efficiently. http://en.wikipedia.org/wiki/Regular_expression#Implementations_and_running_times - Marc -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
