First, continually pressed keys don’t behave in X11 quite as I expected. If I press and hold “up”, it repeats in the way I expect, but if I then press and release another key (say “a”) while still holding down “up”, then “up” stops repeating — but is still considered to be pressed.
It would not be usable for games and many other applications if it was otherwise.
It would not be usable for games and many other applications if it was otherwise.