I am not sure exactly what bugs were found in my patch, as Darren's response does not seem to indicate this. I believe Perl support in 5.5.4 is not up to par (pretty crippled, actually), compared to my patch.

I am working on the next patch, which I will post on ctags mailing list and on perlmonks. New features include support for generating tags for exceptions definitions, method calls (ABC::XYZ->new(), for instance), et al.