From: Junio C Hamano <gitster@pobox.com>
Date: Fri, 20 Jun 2008 08:46:57 GMT
Subject: Re: [q] git-diff --reverse 7def2be1..7def2be1^
Message-ID: <7v3an8o5mm.fsf@gitster.siamese.dyndns.org>
In-Reply-To: <7v7icko61g.fsf@gitster.siamese.dyndns.org>

Junio C Hamano <gitster@pobox.com> writes:

> Ingo Molnar <mingo@elte.hu> writes:
>
>>     a) -R is not recognized by git-diff (so i cannot just standardize 
>>        myself on -R and have to waste neurons on remembering the 
>>        distinction ;-)
>
> Huh?  Have you actually tried "git diff -R"?  My copy of git 1.0.0 knows
> about it.  What year are you still in ;-)?
>
> If you apply the output of
>
> 	git diff -R HEAD^..HEAD
>
> to your tree, you can revert the tip commit.  It is the same as
>
> 	git diff HEAD..HEAD^
>
> If you want to write a forward diff in an obscure way, you could say
>
> 	git diff -R HEAD..HEAD^

By the way, not linking --reverse (traverse the history normally and then
show the commits in the reverse order than usual) to -R (show diff in the
opposite way while showing the change each commit introduces) allows you
to even say "log --reverse -R", which did not come from a conscious
design, but being able to say this _is_ a conscious design:

	$ git fetch j6t
	$ git log --reverse -p ..j6t/for-junio

When I review a branch somebody else offers me, I may want to view the
commits on them in reverse order (so that they build a bit by bit on top
of my tree), but I _certainly_ do not want to view the patch in reverse!