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Re: [Q] Determing if a commit is reachable from the HEAD ?

From
David Brown <davidb@codeaurora.org>
Date
Jan 20, 2012, 18:06 UTC
Message-ID
<20120120180620.GA8504@codeaurora.org>
In-Reply-To
<m2ehuu8nrt.fsf@igel.home>
On Fri, Jan 20, 2012 at 03:13:58PM +0100, Andreas Schwab wrote:
Show 6 quoted lines
> Brian Foster <brian.foster@maxim-ic.com> writes:
> 
> >  In a script, how can I determine commit Y is reachable
> >  from the current HEAD ?
> 
> test $(git merge-base HEAD Y) = $(git rev-parse Y)

Almost. It works as long as there is only one merge base. You really need to check if $(git rev-parse Y) is one of $(git merge-base --all HEAD Y)

if HEAD is a named branch, you can do
  git name-rev --refs=refs/heads/branchname Y

which will give you Y relative to branchname if it is contained within it.

David
-- 
Sent by an employee of the Qualcomm Innovation Center, Inc.
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Previous: Andreas SchwabNext: Junio C Hamano
Message 3 of 12 in “[Q] Determing if a commit is reachable from the HEAD ?”
  1. Brian FosterJan 20, 2012
  2. Andreas SchwabJan 20, 2012
  3. David BrownJan 20, 2012
  4. Junio C HamanoJan 20, 2012
  5. David BrownJan 20, 2012
  6. Junio C HamanoJan 21, 2012
  7. David BrownJan 21, 2012
  8. Sitaram ChamartyJan 20, 2012
  9. Brian FosterJan 23, 2012
  10. Junio C HamanoJan 23, 2012
  11. Brian FosterJan 24, 2012
  12. Brian FosterJan 24, 2012

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