From: Santi Béjar <santi@agolina.net>
Date: Fri, 09 Apr 2010 23:33:01 GMT
Subject: Re: potential improvement to 'git log' with a range
Message-ID: <h2gadf1fd3d1004091633qe27d49f0m2ecb461e56f405b1@mail.gmail.com>
In-Reply-To: <w2j3abd05a91004091624mb2836ff4v118a1ae9ac5ca6e7@mail.gmail.com>

On Sat, Apr 10, 2010 at 1:24 AM, Aghiles <aghilesk@gmail.com> wrote:
> If I type:
>
>    git log FETCH_HEAD~4..HEAD
>
> I get something. But if I type:
>
>    git log HEAD..FETCH_HEAD~4
>
> I get nothing. Is there a good reason for that ?
>

Yes.

$ git log -h
usage: git log [<options>] [<since>..<until>] [[--] <path>...]

So <since> and <until> are not equivalent. It list commits in <until>
but not in <since>.

In your case HEAD has commits not in FETCH_HEAD~4 (your first command)
while FETCH_HEAD~4 does not have commits not in HEAD. So HEAD is a
descendent of FETCH_HEAD~4.

Hope I didn't misunderstood your question.

HTH,
Santi