
It looks weird to have Alt+Space pop up under the cursor instead of the top-left corner of the window, and the Wayland request will pass through the coordinates as well. Add it to the compositor interface, and extend the _GTK_SHOW_WINDOW_MENU ClientMessage to support it as well.
Intro ===== Fix me. Env Vars ======== MUTTER_DISABLE_MIPMAPS - set to disable use of mipmaped windows.