Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -r c361034c5a1c dwm.c
|--- a/dwm.c	Sat Sep 11 19:00:18 2010 +0000
|+++ b/dwm.c	Thu Nov 25 22:54:04 2010 -0800
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 252 (offset 9 lines).
Hunk #2 succeeded at 267 (offset 9 lines).
Hunk #3 succeeded at 275 (offset 9 lines).
Hunk #4 succeeded at 298 (offset 9 lines).
done