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Re: git merge commits are non-deterministic? what changed?

From
Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Date
Nov 9, 2012, 15:52 UTC
Message-ID
<vpq390idb8v.fsf@grenoble-inp.fr>
In-Reply-To
<20121109154245.GP69724@acme.spoerlein.net>
Ulrich Spörlein <uqs@spoerlein.net> writes:
Show 13 quoted lines
>> > 2. Why the hell is the commit hash dependent on the ordering of the
>> > parent commits? IMHO it should sort the set of parents before
>> > calculating the hash ...
>> 
>> What would be the sort key?
>
> Trivially, the hash of the parents itself. So you'd always get
>
> ...
> parent 0000
> parent 1111
> parent aaaa
> parent ffff

That would change the behavior of --first-parent. Or you'd need to compute the sha1 of the sorted list, but keep the unsorted one in the commit. Possible, but weird ;-).

-- 
Matthieu Moy
http://www-verimag.imag.fr/~moy/
Previous: Ulrich SpörleinNext: Jeff King
Message 4 of 9 in “git merge commits are non-deterministic? what changed?”
  1. Ulrich SpörleinNov 9, 2012
  2. Andreas SchwabNov 9, 2012
  3. Ulrich SpörleinNov 9, 2012
  4. Matthieu MoyNov 9, 2012
  5. Jeff KingNov 9, 2012
  6. Ulrich SpörleinNov 9, 2012
  7. Michael J GruberNov 12, 2012
  8. Ulrich SpörleinNov 20, 2012
  9. Junio C HamanoNov 20, 2012

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