I believe most DEs read the .desktop files in /usr/share/applications when populating their applications menus, so I assume this question is common for most DEs.
The applications .desktop files contains a field named "Categories", but this field doesn't seem to be used in the placement of the applications in the application menus in the DEs?
I have 105 application categories as per the Categories entries in the .desktop files, but my unmodified XFCE application menu contains only 10 categories.
I can find most of my application menu categories among the .desktop file categories, but "Accessories" and "Multimedia" does not exist as categories in any .desktop file, and "Games" exist only as "Game" in the .desktop files.
So, I it seems one of the following two situations must be true:
- The "Categories" entry from the .desktop files are not used for application menu placement
- The .desktop files are used, but some sort of filtering or mapping takes place
Correspondingly, my question is:
- If 1 is true: Where would I find the application menu placement configuration?
- Or, if 2 is true: Where would I find the filtering or mapping configuration?