Show outdated (not missing) i18n strings

[RickCogley]

This is problematic I think. Everything I think of has major caveats.

Another thread is kind of ongoing about maintaining translations…:

How do you maintain (update) your translations?

I want to setup a workflow to maintain translations. Please think of a translated website with a canonical language and dependent translations. When a file in the canonical language is changed I would like to update the translations ASAP. Currently my idea is to use git to track changes in the canonical files as git diff --name-only returns the changed files between two commits. This would imply that I tag my translations to have a point of reference. I am not sure whether this is a good idea. …

Edit: by the way, nice shortcode!