Re: OK, how should I have done this...

From: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Date: Nov 22, 2010, 13:34 UTC
Message-ID: <vpq4ob9qy6f.fsf@bauges.imag.fr>
In-Reply-To: <AANLkTim0_J0i_a0o+z1oCC4mramfUxCGtCg_Y+ab+h+-@mail.gmail.com>

Patrick Doyle <wpdster@gmail.com> writes:

> I just checked in modifications to 1/2 dozen or so files in a single
> commit and pushed them to my server.

> So now I want to figure out which modification(s) in which file(s)
> introduced the problem.

'didn't read all the details of your message, but the way I'd have done this would be with stash --keep-index:

(untested)

git checkout the-one-that-works # staging area and tree checked out.
git reset the-one-that-doesnt   # just change the staging area
git add -p
# pick some commits
git stash --keep-index
# run some tests
# if test fail then
   # happy, "git diff --staged" tells you what.
# else
   git commit -m "first modification"
   git stash pop
   # goto the git add -p step.
# fi

-- 
Matthieu Moy
http://www-verimag.imag.fr/~moy/