Re: Strange effect merging empty file

Jeff King [off-list ref] writes:

That is a slight layering violation, in that we are making assumptions
about how the diffcore-rename subsystem works.

I do not think I have to say any more than that.  The special case we want
to have is for the "empty to empty" case and nothing else, and I do not
want to see people having to remember to look at the merge-recursive code
if/when rename detection starts to treat "empty to small" as "rename with
minor modification."