It's a little slower, but you may also want to take a look at the PPI module.

It currently works great for syntax highlighting, although it's eventually meant as a more general perl parser.

Demos at

http://ali.as/cgi-bin/CPAN/samples/PPI/syntax/cgi.pl

(Yes, this is blatant self interest, but hey, it still handles perl syntax highlighting better than anything else I've ever seen)