http://www.perlmonks.org?node_id=424250


in reply to Re: I wonder...
in thread Things you think you'll never use.

Yes this is exactly what I meant :-) But it's not the point of my post. The point was: this matching task is a real challenge for 'normal regexes'. This technique using ??{} is indeed a way to solve it. I wondered whether there are other ways, using more standard regex operators.