_kt_assign_action
_kt_assign_action(kt->table + first, binder, keyfn, data);
_kt_assign_action(sym, binder, keyfn, data);
static void _kt_assign_action(KeySym *sym, KtBinder binder, KtKeyFn *keyfn,
_kt_assign_action(kt->table + oldkey, binder, 0, NULL);