Surprisingly, I couldn't find a straight answer to this. It's not entirely clear in the Community Wiki FAQ.
There are (at least?) four different types of edit actions:
- Body edits
- Title edits
- Retags
- Rollbacks
And a few actions that show up in the history but aren't really "edits":
- Close/Reopen
- Delete/Undelete
The FAQ seems to indicate that only body edits are important as far as "wikification" is concerned, but I'm not sure if that's really correct or if I'm just interpreting the post too literally.
The FAQ also says that rollbacks don't reverse the calculations - fine, but are they considered to be additional edits or are they ignored?
Can anyone tell me which of these actually count toward the wikification of a post, and whether the rules are any different for owner edits vs. multiple editors?