Ah-ha!
In my case the syntax file seems to be more fresh: 
fisher% cd /usr/share/vim/vim72/syntax/ 
fisher% head -7 perl.vim
" Vim syntax file
" Language:     Perl 5
" Maintainer:   Andy Lester <andy@petdance.com>
" URL:          http://github.com/petdance/vim-perl/tree/master
" Last Change:  2009-09-2
" Contributors: Andy Lester <andy@petdance.com>
"               Hinrik Örn Sigurðsson <hinrik.sig@gmail.com>

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This is vanilla packages from debian/squeeze (stable release starting from 5th feb 2011 =)

In reply to Re^3: Useful syntax highlighting to illustrate variable interpolation? by fisher
in thread Useful syntax highlighting to illustrate variable interpolation? by will_

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