Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/dmenu.c b/dmenu.c
|index 7361377..fcec79b 100644
|--- a/dmenu.c
|+++ b/dmenu.c
--------------------------
Patching file dmenu.c using Plan A...
Hunk #1 succeeded at 311 (offset -6 lines).
Hunk #2 succeeded at 439 (offset -6 lines).
Hunk #3 succeeded at 496 (offset -6 lines).
done