Which is very computer-science-y approach, and totally uninteresting at that, because the (?PARNO) syntax is still embedded in the same regexp engine for any pr

Which is very computer-science-y approach, and totally uninteresting at that, because the (?PARNO) syntax is still embedded in the same regexp engine for any practical purpose or distinction. If you didn't know, a regexp engine with capture groups is already stronger than what in formal languages theory is called "regular expressions".