perl-pod-gt.el has some small helpers for C<...> etc style Perl POD markup. It can be added on to PerlMode, CPerlMode, PodMode, or similar. Get it from
The features are
> inserting E<gt> (which is where the name “perl-pod-gt” comes from)C<<...>> and in the non-break S<...> for FillParagraphC<$foo->bar> (which is almost certainly meant to be E<gt>)C<...> to C<<...>> when you want to step up