This user subpage is currently inactive and is retained for historical reference. If you want to revive discussion regarding the subject, you might try contacting the user in question or seeking broader input via a forum such as the village pump.
TemplatePreviewGuard
Description
Warns when you try to use "Preview page with this template" with a page that doesn't transclude the template
Have you ever used the "Preview page with this template" feature and wondered why your changes weren't being reflected in the preview only to realize you were editing the wrong template? If you have, this script is for you. It'll show you a confirmation dialog if you click "Show preview" under "Preview page with this template" and the entered page doesn't transclude the page being edited.
