From: Jonathan Nieder <jrnieder@gmail.com>
Date: Wed, 21 Jul 2010 01:05:39 GMT
Subject: git name-rev for fun and profit (Re: [PATCH] t/: work around one-shot variable assignment with test_must_fail)
Message-ID: <20100721010539.GF4282@burratino>
In-Reply-To: <AANLkTil8gyaOcjHGm0tLTdYDdTT4VckUr9nELNiBlKNa@mail.gmail.com>

Ævar Arnfjörð Bjarmason wrote:

> As an aside, how do you make these 61-commits-after-rc0 commit ids. Is
> there a sha1->that tool that I haven't spotted?

 GIT_PAGER_IN_USE=1 git log --all-match --grep=shell --grep=export |
 git -p name-rev --tags --stdin

v1.5.6-rc0~61 is 61 commits before rc0 (well, the 61st-generation
grandparent using the first parent where there is a choice).  The
distinction matters because “61 commits _after_ 1.5.6-rc0” is not
well-defined.

If you want the latter sort of description anyway, ‘git describe’
might help.