As far as I can see, there is currently no way for an extension to react to a
page being undeleted (restored) or an edit being rolled-back.
This means that extensions which cache meta-data based on the page contents will
go out of sync if either of these situations occur.
I don't know if either of these warrant a new hook, or whether
ArticleInsertComplete (for undelete) and ArticleSave/ArticleSaveComplete (for
rollback) should be re-used.
I am happy to implement a patch for this if someone can advise me on the best
method.
Version: unspecified
Severity: enhancement