Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From a37879a10bbca1591a2677ddecd641a4bcb8ffbd Mon Sep 17 00:00:00 2001
|From: Santtu Lakkala <inz@inz.fi>
|Date: Thu, 13 Jul 2023 15:48:14 +0300
|Subject: [PATCH] Command FIFO for dwm
|
|Builds on the previous version of dwmfifo, but:
| - proper buffering and line detection
| - basic argument parsing
| - new commands to show a window by xid or name pattern
|---
| config.def.h |  26 +++++++
| dwm.c        | 200 ++++++++++++++++++++++++++++++++++++++++++++++++++-
| 2 files changed, 223 insertions(+), 3 deletions(-)
|
|diff --git a/config.def.h b/config.def.h
|index 9efa774..fc4db01 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 114.
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..202ed6a 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 21.
Hunk #2 succeeded at 29.
Hunk #3 succeeded at 144.
Hunk #4 succeeded at 171.
Hunk #5 succeeded at 238.
Hunk #6 succeeded at 280.
Hunk #7 succeeded at 560.
Hunk #8 succeeded at 762.
Hunk #9 succeeded at 1511.
Hunk #10 succeeded at 1759.
Hunk #11 succeeded at 2213.
Hmm...  Ignoring the trailing garbage.
done