Re: [PATCHv2 0/3] Fix unnecessary (mtime) updates of files during merge

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Hi,

Thanks for all the feedback.

On Tue, Mar 1, 2011 at 12:31 PM, Jeff King <peff@xxxxxxxx> wrote:
...
> As you mention, this second testcase is not a regression at all, and
> while it would be great if we could avoid touching those files at all, I
> don't think anybody will be too upset at files being rewritten that were
> actually involved in the conflict.

Well, technically they weren't involved in a conflict.  One side had
an unmodified directory of files, the other side removed that
directory and just put a file there.  Someone starts the merge on the
side that only has a file there.  There's no conflict, but we update
the file.

Still, it's a lot better than erroring out and claiming there was a
conflict, so it's still an improvement over what we had.

> I think the fix you have for the first testcase is reasonable. It feels
> a little like a band-aid, as we are throwing away stat information early
> on and then pulling it again from the filesyste at the end. But from
> your description, the real fix to that would probably involve some
> changes to the way unpack_trees works, and that's probably complex
> enough that the band-aid is a good fix for now.

I agree, it does seem like a bit of a band-aid, but as you say I was
worried about the complexity of changing unpack_trees and wanted a
good interim fix.  Of course, Junio's point about
deleted-as-unmodified files might be sticky enough that we have to
start looking at such alternatives or do something more.  We'll have
to see what he says.
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