Re: Determining if two commits are on a separate branch

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On Fri, Jun 27, 2008 at 16:55, Adr3nal D0S <adr3nald0s@xxxxxxxxx> wrote:
[...]

> So, is there a "correct" or "best" way to determine if one commit's
> SHA follows directly from another's SHA in the commit history?

You can compute the merge-base of these two commits and if the base is
one of them then it is a fast-forward.

For example, in git.git:

$ git merge-base origin/next origin/master
d54467b8c319571b5dc433b1f7e471c4b0f21caf

$ git rev-parse origin/next origin/master
3e7d305293ce93d00d5e0e6371311f7caa94f497
d54467b8c319571b5dc433b1f7e471c4b0f21caf

The merge-base is origin/master so it is an ancestor of origin/next.

HTH

Santi
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