Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From e45e286b3d639b90ef202996d87054cced1fd80e Mon Sep 17 00:00:00 2001
|From: tdu <tdukv@protonmail.com>
|Date: Mon, 31 Aug 2020 00:07:32 +0300
|Subject: [PATCH] Right clicking the layout symbol opens an xmenu prompt to
| select layout.
|
|Xmenu need to be installed for this to work.
|Edit layoutmenu.sh with the correct layout table, and place in PATH.
|---
| config.def.h  |  3 ++-
| dwm.c         | 19 +++++++++++++++++++
| layoutmenu.sh |  7 +++++++
| 3 files changed, 28 insertions(+), 1 deletion(-)
| create mode 100755 layoutmenu.sh
|
|diff --git a/config.def.h b/config.def.h
|index 1c0b587..c9e0833 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 58.
Hunk #2 succeeded at 102.
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 4465af1..2508a0a 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 177.
Hunk #2 succeeded at 1015.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/layoutmenu.sh b/layoutmenu.sh
|new file mode 100755
|index 0000000..1bf95f2
|--- /dev/null
|+++ b/layoutmenu.sh
--------------------------
(Creating file layoutmenu.sh...)
Patching file layoutmenu.sh using Plan A...
Empty context always matches.
Hunk #1 succeeded at 1.
Hmm...  Ignoring the trailing garbage.
done