Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -up ./tabbed.c ../tabbed-0.5/tabbed.c
|--- ./tabbed.c	2013-06-24 14:34:47.208245039 +0200
|+++ ../tabbed-0.5/tabbed.c	2013-06-24 14:36:58.423921877 +0200
--------------------------
Patching file tabbed.c using Plan A...
Hunk #1 succeeded at 311.
done