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From: Jacob Keller <jacob.keller@gmail.com>
To: Git mailing list <git@vger.kernel.org>
Subject: git describe/contains for submodule commits
Date: Wed, 22 May 2019 16:42:10 -0700	[thread overview]
Message-ID: <CA+P7+xrXz7-TgV4ufVkXqjgi8X1UD=pQJC3s2JA5fH-sEEnENA@mail.gmail.com> (raw)

Hi,

I've had a few times where I was curious of when a submodule got set
to a specific commit.

I noticed that git describe has "blob" support, which outputs something like

<commit>:/path/to/file

using the revision walking machinery.

I'm curious if anyone knows if that sort of revision walk could be
expected to find the first treeish that had a submodule commit instead
of a blob.

I'm not that familiar with the revision walking, so I was hoping to
get some pointers of whre to look before I began implementing.

Ultimately, I'd like to have some sort of command like:

  git submodule contains <submodule> <commit id>

and have it try to figure out the most recent commit htat has a
submodule change for which the submodule is a child of the specified
submodule commit.

I can sort of reverse engineer this through git log, but it's slow and
tedious, so I was hoping to be able to implement it into a revision
walk that did this.

Once I know the commit that introduces the submodule change, I could
feed that to git describe --contains to find the tag/version which
included the change easily enough.

Thanks,
Jake

             reply	other threads:[~2019-05-22 23:42 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-22 23:42 Jacob Keller [this message]
2019-05-23  0:04 ` git describe/contains for submodule commits Ævar Arnfjörð Bjarmason
2019-05-29 17:32   ` Jacob Keller

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