Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/dwm.c b/dwm.c
|index d27cb67..464c9d6 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 163.
Hunk #2 succeeded at 237 (offset -1 lines).
Hunk #3 succeeded at 486 (offset 2 lines).
Hunk #4 succeeded at 693 (offset 2 lines).
Hunk #5 succeeded at 804 (offset 2 lines).
Hunk #6 succeeded at 1664 (offset -7 lines).
done