Subject: bug#18402: [bug-diffutils] bug#18402: bug#18402: Wrong output for single character files without newline

From: Paul Eggert <[email-masked]>
Date: Wed, 03 Sep 2014 17:20:08 -0700

Jim Meyering wrote:
> can you give performance deltas on moderate
> or pathologically affected inputs?

Maybe something like this:

diff --horizon-lines=100000000000000000000 gnulib/ChangeLog /tmp/ChangeLog

where the two files are copies.  The bug fix sped up performance about 
5x on my platform, which is Fedora 20 x86-64, AMD Phenom II X4 910e.