I would like to use the right cursor-key as right Ctrl-key on my notebook keyboard. (I'm using the koy-layout  so the idea is not as stupid as it might look at a first glance.)I tried to do add the following to /usr/share/X11/xkb/symbols/pc   key <RGHT> { [  Control_R        ]   };   modifier_map Control{ Control_L, Control_R, <RGHT> };and just   modifier_map Control{ Right };and several more variations  without forgetting to sudo rm -rf /var/lib/xkb/* and logout/login again.The best I achieved was that the key did both: being Ctrl and Right at the same time (I mean I could use it as Ctrl-key but the cursor once moved one position right).Any hints anybody to what I'm missing?
How to define Right-key as Control with xkb?
keyboard layout;xkb