bgu: An application that seems to almost exactly match the requirements you give is described in Dominus's book "Higher Order Perl" (freely downloadable here) in section 4.3.2 "Genomic Sequence Generator". A more general discussion of generating strings given a regex is contained in section 6.5 "Regex String Generation".

In reply to Re: CPAN module for generating regexp matches by AnomalousMonk
in thread CPAN module for generating regexp matches by bgu

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