Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -urp -x config.mk dwm-6.1/drw.h dwm-6.1-patched/drw.h
|--- dwm-6.1/drw.h	2015-11-09 06:39:37.000000000 +0800
|+++ dwm-6.1-patched/drw.h	2016-03-09 15:12:58.966751900 +0800
--------------------------
Patching file drw.h using Plan A...
Hunk #1 succeeded at 23.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff -urp -x config.mk dwm-6.1/dwm.c dwm-6.1-patched/dwm.c
|--- dwm-6.1/dwm.c	2015-11-09 06:39:37.000000000 +0800
|+++ dwm-6.1-patched/dwm.c	2016-03-09 15:55:35.723676356 +0800
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 201.
Hunk #2 succeeded at 270.
Hunk #3 succeeded at 487.
Hunk #4 succeeded at 813.
Hunk #5 succeeded at 1074.
Hunk #6 succeeded at 1540.
Hunk #7 succeeded at 1609.
Hunk #8 succeeded at 1677.
Hunk #9 succeeded at 1804.
Hunk #10 succeeded at 1844.
Hunk #11 succeeded at 1860.
done