However, Perl is not really capable of DSLs...
Back to Perl, by Cosine Jeremiah
I seem to recall writing several parsers in Perl. Perhaps the author was thinking of PERL, a so-called language with a confusingly similar name which stubbornly resists the efforts of even the best programmers to do anything useful.
I can't understand that phrase one bit, unless I change the meaning of at least one of the nouns substantially.