If you can live without automatically enabling Perl mode in emacs, it should work to just trim off the stuff following the --, like this:

#!/bin/sh --
eval 'exec perl -wS $0 ${1+"$@"}'
if 0;
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I'm away from my RH box, so I can't test this.

As to your second question, you can post a note to Editor requests, or send an email to The Grand Abbot (there's a mailto: link at the bottom of every page).