From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH 4/2] Fix parent rewriting in --early-output
Date: Tue, 13 Nov 2007 10:53:01 -0800
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Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Marco Costalba <mcostalba@gmail.com>,
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To: Paul Mackerras <paulus@samba.org>
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Paul Mackerras <paulus@samba.org> writes:

> In fact it would be easier for me if, instead of getting the id of
> some random ancestor commit, I got an explicit indication to say
> "unknown parent", such as just a "-" in place of the id of the
> unknown parent(s).  Would that be doable?  I could then just not do
> the processing for any unknown parent, and make sure to do it when I
> see the final version of the commit.

I suspect that a "-" in place of a commit object name may not be
enough for your purpose, as the _number_ of parents can later
change in the later re-output.

I wonder if the presense of "incomplete" on the "Final output"
line is a good enough indication for that.  That is, until you
see "Final output: $N done", you will treat the parent
information as unreliable.