On Fri, 10 Jul 2009, Matthias B. wrote: > I've read about the recursion feature in pcre.txt. I also tried it with > simple expressions like "\w(?R)" - shouldn't that match the same like > "\w\w"?
No. >It doesn't and I don't understand why. Can you mention that to me? A usable recursive regex, like a recursive function in a programming language, must have some way of stopping the recursion. Your pattern goes on for ever. It matches an infinite number of \w (which is of course impossible). A slightly different pattern: \w($|(?R)) is the same as \w+ Notice the option for stopping when the end of the text is reached. Philip -- Philip Hazel -- ## List details at http://lists.exim.org/mailman/listinfo/pcre-dev
