Re: [RFC] use typechange as rename source

Jeff King [off-list ref] writes:

OK. What next? Did the patch I sent make sense? Do you want a cleaned up
version with a commit message and signoff, or does it need work?

It just hit me that breaking (as in diffcore-break) a filepair that is a
typechange may yield the same result, and if it works, that would be
conceptually cleaner.  After all, a typechange is the ultimate form of
total rewriting (the similarity between the preimage and the postimage
is very low -- even their types are different, let alone contents).

Compared to that, the rename_used++ in that codepath you touched feels
more magic to me.