How to get list of valid revision numbers for an element?

I'm considering writing a script which (among other things) can iterate
through all the valid revisions for an element. I'm trying to figure
out the best way to do that. I could easily just start at "1" up to the
latest revision number, and just check for errors on each one, but that
seems pretty painful. Is there a straightforward way to get a list of
valid revision numbers for an element? I would like the ability to
start at the beginning and iterate to the latest, and also start at the
latest and iterate to the earliest.

This would be done in a Bash or Perl script.
Received on 2010-04-19 21:30:41 CEST