From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Bryan Donlan" <bdonlan@gmail.com>
Subject: Re: Git tree/blob and corresponding commit
Date: Fri, 15 Aug 2008 15:39:14 -0400
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Cc: "Jonathan Nieder" <jrnieder@uchicago.edu>,
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On Thu, Aug 14, 2008 at 10:02 AM, Pascal Obry <pascal@obry.net> wrote:
> Jonathan,
>
>> but I actually meant
>>
>> <http://thread.gmane.org/gmane.comp.version-control.git/44750/focus=44849>.
>> Anyway, the whole thread is interesting.  Sorry for the noise.
>
> Thanks, I had a look. This is indeed giving some procedure... I was hopping
> for something faster (git rev-list takes some time!).

It's not really meant to be a common case; if the same file is created
under different names by different commits that aren't ancestors of
each other, then it's unclear which should be reported. As such,
there's no index or other such thing to quickly find the commits
corresponding to a blob, so you just have to walk the entire history.