Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From e655302a4bd74c1f2778f94761c87381d1dfc0e2 Mon Sep 17 00:00:00 2001
|From: midspec <obleque@protonmail.com>
|Date: Sat, 4 Nov 2023 19:17:50 +0000
|Subject: [PATCH] Add window-gaps for the tile-layout
|
|Adds gaps between windows in the tile-layout. The proposed advantage to some
|other patches which try to accomplish the same goal is that the gap-size between
|master and stack, window and window, and window and screen-edge is the
|same. The gap-size can be configured in the config.h with the
|gappx-variable.
|
|---
| config.def.h |  1 +
| dwm.c        | 23 +++++++++++++----------
| 2 files changed, 14 insertions(+), 10 deletions(-)
|
|diff --git a/config.def.h b/config.def.h
|index 9efa774..82ba41f 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 2.
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 f1d86b2..fa8b3d6 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 1669 (offset -18 lines).
Hmm...  Ignoring the trailing garbage.
done