Re: Summer of Code project ideas due this Friday

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On Thu, Mar 10, 2011 at 11:21:47AM -0800, Junio C Hamano wrote:

> Jeff King <peff@xxxxxxxx> writes:
> 
> > One more wishlist item for this. I use "add -p" for almost all of my
> > adds these days, because I like the final review check. So after a
> > conflicted merge, I find myself doing "add -p" to stage my resolution.
> > The current behavior is that it shows the --cc diff and exits. It would
> > be cool to handle staging the resolution, which would involve converting
> > the combined diff into something that can be applied.
> 
> I think the end-result would be a nice feature. I suspect that it would
> not involve conversion from --cc, but more like using the difference
> between the HEAD and the working tree, generated as if there is no
> multi-stage index.

The trouble is that I would like to see the combined diff, then say "OK"
and have it apply the result to the index. But because we work on a
per-hunk basis, you need to match the combined diff hunks to the regular
diff hunks, taking into account that hunks could be split.  Which maybe
is straightforward, but I haven't convinced myself yet that there are no
corner cases where they don't line up.

I guess one could argue that I should be using mergetool, and making a
mergetool helper that is more like "add -p" (show hunks, say "choose
left, choose right, choose none"). But I generally fix up the conflict
using an editor and just want "add -p" as a final check.

I'll probably look into it more eventually, but it's not a high priority
at this point.

-Peff
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