Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From cb3cac91db32403bb581aecbc2957b00bb49c898 Mon Sep 17 00:00:00 2001
|From: aleks <aleks.stier@icloud.com>
|Date: Mon, 6 May 2019 16:34:58 +0200
|Subject: [PATCH] Add deck-layout
|
|deck is a dwm-layout which is inspired by the TTWM window manager.
|It applies the monocle-layout to the clients in the stack.
|The master-client is still visible. The stacked clients are like
|a deck of cards, hence the name.
|
|The vanilla patch doesn't work properly with patches which add gaps.
|This means that when the deck-layout is activated gaps are omitted.
|To make it work with the tilegap-patch apply the dwm-deck-tilegap patch
|on top of the dwm-deck patch.
|
|The vanilla patch doesn't respect the master-area which is defined by
|the rmaster-patch. To make it work with the rmaster-patch apply the
|dwm-deck-rmaster patch on top of the dwm-deck patch.
|---
| config.def.h |  2 ++
| dwm.c        | 26 ++++++++++++++++++++++++++
| 2 files changed, 28 insertions(+)
|
|diff --git a/config.def.h b/config.def.h
|index 77ff358..55d8a07 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 32.
Hunk #2 succeeded at 67.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/dwm.c b/dwm.c
|index 1d78655..356ab44 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 171.
Hunk #2 succeeded at 670.
Hmm...  Ignoring the trailing garbage.
done