From: Felipe Contreras <felipe.contreras@gmail.com>
Date: Wed, 30 Apr 2014 06:49:18 GMT
Subject: Re: [PATCH] rerere: fix for merge.conflictstyle
Message-ID: <53609cee92532_4c3af672f0f4@nysa.notmuch>
In-Reply-To: <20140430060835.GA21698@sigill.intra.peff.net>

Jeff King wrote:
> On Tue, Apr 29, 2014 at 11:08:29PM -0500, Felipe Contreras wrote:
> 
> > If we use a different conflict style `git rerere forget` is not able to
> > find the matching conflict SHA-1 because the diff generated is actually
> > different from what `git merge` generated.
> 
> Can you show an example or test case?

% git clone https://github.com/felipec/git
% git config merge.conflictstyle diff3
% git checkout master
% git merge --no-ff origin/fc/branch/nice-verbose
% git merge --no-ff origin/fc/publish
# fix conflicts as per -Xtheir strategy
% git commit
% git rerere forget builtin/branch.c
error: no remembered resolution for builtin/branch.c

> I could not reproduce the problem with a trivial case, and rerere
> specifically tries to handle the differences between "merge" and "diff3"
> styles by throwing away the base content between "|" and "=" lines.
> However, I wonder if it could still miss a match in some cases because
> the "merge" style uses XDL_MERGE_ZEALOUS, whereas diff3 bumps it
> down to XDL_MERGE_EAGER, which could lead to a slightly different
> preimage.

That's probably it.

-- 
Felipe Contreras