Wikimedia Bugzilla is closed!

I was thinking that it might be a good idea to extract the difference engine
from the Mediawiki software, and release it as another open source piece of
software. 

This would benefit many people that are working on their own wiki website, and
need some way to let the user know of the difference easily. For example, I am
creating a guitar tab wiki (http://tabmatic.com), but can't find any suitable
difference engine for the site. 

I have looked at the source of DifferenceEngine.php, but I realize that most of
the code is specific to Mediawiki, and it would be hard to extract it myself,
without knowing how it is organized.