Hello,
As an interface administrator, I've renamed this page: https://fr.wikiquote.org/w/index.php?title=MediaWiki%3AGadget-OptimizedSuivi.js&type=revision&diff=270110&oldid=135503
Although it has stayed into the same namespace, I could modify it before, but not after the renaming, because of the following error:
You cannot edit this revision because its content model is wikitext, which differs from the current content model of the page javascript.
You can view and copy the source of this page.