In the last days I worked quite a lot on my Perl6-syntax-enhanced version of Emacs cperl-mode. I synchronized it with ilyaz' version 5.19 and walked through a lot of scripts in pugs/examples and some synopses to find missing syntax that troubles cperl-mode.
I would love to hear *any* feedback whether or how it works for you.
So if you normally use (X)Emacs and experiment with Pugs/Perl6, please give cperl-mode a try and drop me a (non)success message.
You can find it in Pugs:
http://svn.openfoundry.org/pugs/util/cperl-mode.el>
and you can read more detailed usage instructions here:
http://renormalist.net/cgi-bin/twiki/view/Renormalist/CPerlMode>