Maybe take a look at chapter 6.5 "Regex String Generation" of Dominus's excellent "Higher-Order Perl" book (free download here). Sez MJD:

Given a regex, how can one generate a list of all the strings matched by the regex? The problem can be rather difficult to solve. But the solution with streams is straightforward and compact.
So there you have it: "rather difficult to solve," "straightforward and compact," what are we waiting for?

Give a man a fish:  <%-{-{-{-<

In reply to Re: Searching for regular expression overlaps by AnomalousMonk
in thread Searching for regular expression overlaps by Giardap

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