Hi, I begun to made some work on a xdg menu for fvwm-menu-desktop that will provide FreeDesktop additional categories support out of the box.
It will provide /etc/xdg/menus/fvwm-applications.menu and its associated files. This is a work in progress, for just it just give an idea of what I want to do. A few additional categories are already supported, and it will take some time until all are incorporated. It is a repository on github: https://github.com/domichel/fvwm-xdg-menu [1] It is no icon support for the categories at that time, maybe later if I find the time. But maybe they are already in fvwm-themes? Best, Dominique