Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/dwm.c b/dwm.c
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 122.
Hunk #2 succeeded at 258.
Hunk #3 succeeded at 616 (offset 2 lines).
Hunk #4 succeeded at 627 (offset 2 lines).
Hunk #5 succeeded at 1507 (offset 6 lines).
Hunk #6 succeeded at 1521 (offset 2 lines).
Hunk #7 succeeded at 1568 (offset 6 lines).
Hunk #8 succeeded at 1674 (offset 2 lines).
Hunk #9 succeeded at 1698 (offset 6 lines).
Hunk #10 succeeded at 1982 (offset 3 lines).
done