From: Adam Mercer <ramercer@gmail.com>
Date: Sat, 06 Mar 2010 20:33:22 GMT
Subject: Re: Determining if a tree is clean
Message-ID: <799406d61003061233w60633e26t4c2434042b7f216d@mail.gmail.com>
In-Reply-To: <7vy6i5fe5h.fsf@alter.siamese.dyndns.org>

On Sat, Mar 6, 2010 at 13:23, Junio C Hamano <gitster@pobox.com> wrote:

> It is expected that a Porcelain script that implements a custom feature
> may call diff-files, diff-index and other plumbing commands many times
> during its lifetime, and that it knows what it is doing (namely, when
> it touches the working tree itself and why).

Makes sense.

> Your Porcelain script should look something like:
>
>    git update-index --refresh
>    git diff-files -q || { echo "modified working tree"; exit 1 }
>    git diff-index --cached -q HEAD || { echo "modified index"; exit 2 }
>
> See contrib/examples/*.sh for examples

Thanks, Junio. That does the trick, I'd recently found the
update-index command and had run into the problem (but not the
solution) that the call to diff-files addresses.

Cheers

Adam