From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jason Sewall" <jasonsewall@gmail.com>
Subject: Re: git annotate runs out of memory
Date: Tue, 11 Dec 2007 14:27:37 -0500
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Cc: "Marco Costalba" <mcostalba@gmail.com>, git@vger.kernel.org
To: "Daniel Berlin" <dberlin@dberlin.org>
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On Dec 11, 2007 2:03 PM, Daniel Berlin <dberlin@dberlin.org> wrote:
> It is stored in an easier format. However, can you not simply provide
> side-indexes to do the annotation?
>
> I guess that own't work in git because you can change history (in
> other scm's, history is readonly so you could know the results for
> committed revisions will never change).
>

I don't know how other scms work, but history is definitely readonly
in git - whatever sha1 you have that describes a commit was calculated
based on its ancestor commits.

If you have a commit's id, it will *always* refer to the same thing -
a tree state and its complete ancestry.