Pehaps a better solution would be to update the symlink resolution code at the top of sh.vim (line 30 et seq.) to know about dash.
That seems like it would have a better chance of being accepted upstream. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org