What my first sentence meant to say was:

A formal regular expression can only match an arbitrarily nested structure. Thus if we wanted to match to depth of say 6 we could do it, but if we want to match to any depth a formal regex wont work. And as I said above perls regexes arent formal regexes. They are decidedly irregular as they have support for backrefs.

Yves / DeMerphq
--
When to use Prototypes?

In reply to (Clarification of) How to Extract Nested IF/THEN elements by demerphq
in thread How to Extract Nested IF/THEN elements by Al Shiferaw

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