I have this section which provides the syntax highlighting. Putting it in .gvimrc will give it to your user, having it in /etc/gvimrc will do the trick systemwide.
" Switch on syntax highlighting if it wasn't on yet.
if !exists("syntax_on")
syntax on
endif
If you mean you want sytax for perl to be included with the syntax vim recognizes, I'm not sure how to go about that.
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