Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 4e33fe0d465fb24f6b42d4a1fb63d4d7902f1986 Mon Sep 17 00:00:00 2001
|From: Gunther Klessinger <gunther.klessinger@axiros.com>
|Date: Thu, 1 Jul 2021 09:19:07 +0200
|Subject: [PATCH] Supporting xfce4-panel in dwm
|
|We treat the panel as special window which
|- never has borders
|- never has focus
|- always has y=0
|- is never shown as active window in the indicators
|- is shown on all tags (via config rule)
|- is ignored on focusstack (MOD+j, MOD+k)
|
|Which window? "xfce4-panel" - configurable in config.h
|---
| config.def.h |  2 ++
| dwm.c        | 28 +++++++++++++++++++++-------
| 2 files changed, 23 insertions(+), 7 deletions(-)
|
|diff --git a/config.def.h b/config.def.h
|index 1c0b587..3b9e7d6 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 3.
Hunk #2 succeeded at 30.
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 b0b3466..956d402 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 175.
Hunk #2 succeeded at 711.
Hunk #3 succeeded at 796.
Hunk #4 succeeded at 859.
Hunk #5 succeeded at 971.
Hunk #6 succeeded at 1061.
Hunk #7 succeeded at 1296.
Hunk #8 succeeded at 2005.
Hmm...  Ignoring the trailing garbage.
done