Jeff King [off-list ref] 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.