From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 27 Jan 2010 07:24:23 GMT
Subject: Re: Testing if a certain commit is in the current branch
Message-ID: <7viqaorowo.fsf@alter.siamese.dyndns.org>
In-Reply-To: <201001270819.39819.elendil@planet.nl>

Frans Pop <elendil@planet.nl> writes:

> I'm currently using the following command for this:
>    git log --pretty=format:%H | grep -q '^<commit id>"
>
> Problem is that with large repos that can be quite slow.
>
> Is there a faster way to do the test?

test "$(git merge-base HEAD $commit)" = "$(git rev-parse $commit)"

But this is a literal answer that could be a less than optimal solution if
you are having an XY problem.