If you're still looking, I quite like XKeysnail (https://github.com/mooz/xkeysnail https://github.com/mooz/xkeysnail) for that, although it does occasionally ge

If you're still looking, I quite like XKeysnail (https://github.com/mooz/xkeysnail https://github.com/mooz/xkeysnail) for that, although it does occasionally get confused. It does seem like it's something a WM should be capable of though.