[PATCH] copies: optimize forward copy detection logic for rebases

[Martin von Zweigbergk]

On Fri, Feb 5, 2016 at 12:51 PM, Augie Fackler <raf at durin42.com> wrote:
> On Fri, Feb 05, 2016 at 11:48:10AM -0800, Durham Goode wrote:
>> # HG changeset patch
>> # User Durham Goode <durham at fb.com>
>> # Date 1454701571 28800
>> #      Fri Feb 05 11:46:11 2016 -0800
>> # Node ID 6eca9fcd1a9cce2f07a212a9c0eaf05dacd082df
>> # Parent  01a5143cd25f285f8c745a92986cd7186bb32c90
>> copies: optimize forward copy detection logic for rebases
>
> This looks great to me. I've spent a few minutes trying to puzzle out
> a case where it would be wrong, and I can't. As such: queued!

How about when b is a merge?