From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matt McClure <matthewlmcclure@gmail.com>
Subject: Re: [PATCH] difftool: Make directory diff symlink work tree
Date: Tue, 12 Mar 2013 17:12:28 -0600
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Cc: David Aguilar <davvid@gmail.com>,
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To: John Keeping <john@keeping.me.uk>
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On Mar 12, 2013, at 1:25 PM, John Keeping <john@keeping.me.uk> wrote:

> When I tried this I got the expected behaviour even without this patch.

    git diff --raw commit

emits the null SHA1 if the working tree file's stat differs from the
blob corresponding to commit. Is that the case you observed?