hb_set_intersect (hb_set_t       *set,
		  const hb_set_t *other)
{
  /* Immutible-safe. */
  set->intersect (*other);
}
hb_set_intersect (hb_set_t       *set,
		  const hb_set_t *other)
{
   
  set->intersect (*other);
}