Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -r 23b71491e149 dwm.c
|--- a/dwm.c	Thu Dec 02 10:16:47 2010 +0000
|+++ b/dwm.c	Mon Dec 13 08:18:03 2010 -0500
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 57.
Hunk #2 succeeded at 212.
Hunk #3 succeeded at 228.
Hunk #4 succeeded at 1484 (offset 15 lines).
Hunk #5 succeeded at 1526 (offset 15 lines).
Hunk #6 succeeded at 1555 (offset 15 lines).
Hunk #7 succeeded at 1579 (offset 15 lines).
Hunk #8 succeeded at 1711 (offset 1 line).
Hunk #9 succeeded at 1801 (offset 15 lines).
Hunk #10 succeeded at 1981 (offset 2 lines).
done