Would an ordinary black hole attract antimatter?

This question follows up on yesterday’s black hole question, What happens when a black hole evaporates? The few black holes that I am familiar with are composed of ordinary matter, lots and lots of ordinary matter. So is the gravity produced by a massive black hole of ordinary matter attractive to antimatter, or would antimatter find the black hole repulsive? If antimatter considers ordinary matter black holes attractive, when a black hole eats a chunk of antimatter, does it get lighter for having done so? Would there be an internal explosion even if we could not see it beyond the event horizon?