UP !
after hours hours of struggle, trying to understand why mupen64plus doesn’t get my hotkey/exit emulator combination, i found this file to edit as well.
i personally tried
Joy Mapping Stop = “button(8) button(9)”
(i guess you have the same N64 replica controller than i do)
But nothing happened either, does anyone have a solution ? having to hit escape on a keyboard to exit the emulator isn’t an option …