version_terms() code question

Reading the code, I wonder why you added this action. Does it enhance WP or is it needed because of the way the plugin maintains revisions?

I’ve been working on clearing up some misconceptions about revision delete code here: http://wordpress.org/support/topic/deleting-post-revisions-do-not-use-the-abc-join-code-you-see-everywhere and your code seems the cleanest.

Thanks.

http://wordpress.org/plugins/revision-control/