Is there a fast and easy way to find out which of a set of SHA1 ids refer to commits that (still) exist in a repository? This is for use in gitk and there could be several ids, so I'd prefer to avoid a fork/exec per id. I could do a git cat-file -t $id for each id, but that's a fork/exec per id. git rev-parse doesn't check whether an id actually refers to an existing commit, so it isn't the answer. What I want to be able to do is to cache the condensed topology information that gitk uses for working out next/previous tags. But when I read in the cache I need to be able to know if the topology includes commits that used to exist but have now been removed. Hence my question. Thanks, Paul. - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
