Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/surf.c b/surf.c
|index f2170a4..8803c64 100644
|--- a/surf.c
|+++ b/surf.c
--------------------------
Patching file surf.c using Plan A...
Hunk #1 succeeded at 91.
Hunk #2 succeeded at 184.
Hunk #3 succeeded at 845.
Hunk #4 succeeded at 1178.
done