void vterm_screen_set_callbacks(VTermScreen *screen, const VTermScreenCallbacks *callbacks, void *user)
{
  screen->callbacks = callbacks;
  screen->cbdata = user;
}
void vterm_screen_set_callbacks(VTermScreen *screen, const VTermScreenCallbacks *callbacks, void *user)
{
  screen->callbacks = callbacks;
  screen->cbdata = user;
}