Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -wu a/dmenu.c b/dmenu.c
|--- a/dmenu.c	2015-11-08 23:42:21.000000000 +0100
|+++ b/dmenu.c	2015-11-10 18:13:43.937450512 +0100
--------------------------
Patching file dmenu.c using Plan A...
Hunk #1 succeeded at 141.
Hunk #2 succeeded at 150.
done