Is it possible to remap a key combination to a key in X server based system, so that for example if I press End + Arrow_up, keycode for Home is generated? Google seems to be silent on this issue. It would be great if there was a solution, since it would open up many possibilities for more convenient keyboard mapping.
Take a look at this similar question over at superuser. Something like
"xdotool key Home" End + Up
.xbindkeysrc file should suffice.
If you really want to try to use xmodmap, a start would be to map either the
End key or the
Up key to a modifier key in .
Xmodmap. For example, you could grab your two keys with
xev and map the
End key to
keycode NN("End" keycode) = mode_switch
and then map the mode_switch part of
keycode NN("Up" keycode) = Up NoSymbol Home
But I am not sure about that part, you will have to experiment. What will definitely work is to let your desktop environmnet do the work(dconf etc.).
Another clue might be found here.