You currently can't set the filter name in a GtkBuilder file in a translatable way. I propose setting the name through a property. This is a backport of the proposed change into master (!376) to allow easier migration to GTK 4.
Step 1. Fetch and check out the branch for this merge request
git fetch https://gitlab.gnome.org/robert.ancell/gtk.git file-filter-name-property-3-24 git checkout -b robert.ancell/gtk-file-filter-name-property-3-24 FETCH_HEAD
Step 2. Review the changes locally
Step 3. Merge the branch and fix any conflicts that come up
git fetch origin git checkout origin/gtk-3-24 git merge --no-ff robert.ancell/gtk-file-filter-name-property-3-24
Step 4. Push the result of the merge to GitLab
git push origin gtk-3-24
Note that pushing to GitLab requires write access to this repository.
Tip: You can also checkout merge requests locally by following these guidelines.