Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -r 406003e3a01f dwm.c
|--- a/dwm.c	Mon Sep 27 07:53:44 2010 +0000
|+++ b/dwm.c	Wed Oct 13 21:16:04 2010 +0300
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 36.
Hunk #2 succeeded at 94.
Hunk #3 succeeded at 860 (offset 37 lines).
Hunk #4 succeeded at 1065 with fuzz 2 (offset -30 lines).
Hunk #5 succeeded at 1187 (offset 37 lines).
Hunk #6 succeeded at 1682 (offset -24 lines).
done