Request for author, or another contributor:

In the pluging 'write metadata' https://piwigo.org/ext/extension_view.php?eid=769

It would be very beneficial (to me at least) if that when a trigger of 'I just edited / added a tag to this picture' that it automagically wrote that out to the file.

This way I could ensure that when I tagged a photo, that those tags were automatically written out to the file, and would not require additional administration.