[PATCH V2] patch: don't separate \r and \n when colorizing diff output

[Augie Fackler]

> On Jul 11, 2018, at 10:26, Sune Foldager via Mercurial-devel <mercurial-devel at mercurial-scm.org> wrote:
> 
>> Also please fix the check-code failure.
> 
> Hm what’s wrong with -i? At any rate, I don’t have time to do this today. 

-i was added with different behaviors on BSD and GNU sed. It's incompatible between those seds.