_kt_set_action
if(_kt_set_action(gl->bindings, name, action_fn, cb)) {
if(_kt_set_action(gl->bindings, name, action_fn, a)) {
if(_kt_set_action(gl->bindings, gl_actions[i].name, gl_actions[i].fn, NULL))
int _kt_set_action(KeyTab *kt, const char *action, KtKeyFn *fn, void *data);