Re: [bug-diffutils] Addition of a single line, diff thinks whole file has changed

[Paul Eggert]

On 12/28/2012 07:43 AM, Martin Puppe wrote:

https://github.com/puppe/resumeLater/commit/3f3da85d519ee06a64534fe329bba1610a2293db

I don't know whether github actually uses GNU diffutils

It doesn't.

I get the same result on Ubuntu 12.04 with diffutils 3.2

That's because every line did indeed change.
Try running the 'od' command on the old and new versions.