From: Junio C Hamano <gitster@pobox.com>
Date: Mon, 27 Jul 2009 21:03:27 GMT
Subject: Re: Output from git diff-tree (documentation)
Message-ID: <7vbpn5g7og.fsf@alter.siamese.dyndns.org>
In-Reply-To: <87hbwxaolw.fsf@krank.kagedal.org>

David Kågedal <davidk@lysator.liu.se> writes:

> The "git diff-tree HEAD" command (with the default raw output) starts
> by printing a hash, which seems to be the hash for the commit (HEAD in
> this case).

That was because "git diff-tree" was the historical workhorse of "git
log".  The latter literally was "rev-list HEAD | git diff-tree --stdin".

Giving a commit on the command line and giving one from the stdin was made
consistent.  IOW, "rev-list HEAD | xargs -n1 git diff-tree" would give you
a similar output.