Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/dmenu.c b/dmenu.c
|index 76acee6..3588890 100644
|--- a/dmenu.c
|+++ b/dmenu.c
--------------------------
Patching file dmenu.c using Plan A...
Hunk #1 succeeded at 500 (offset -46 lines).
Hunk #2 succeeded at 680 (offset -46 lines).
Hunk #3 succeeded at 780 (offset -46 lines).
done