Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 1e4f29c34c3631e1d7350b02a199ae6000b33f6d Mon Sep 17 00:00:00 2001
|From: Miles Alan <m@milesalan.com>
|Date: Wed, 25 Mar 2020 21:40:10 -0500
|Subject: [PATCH] Add invert function which changes the current colors' RGB
| values to be inversed
|
|Bind invert function in example config.def.h to Ctrl-Shift-x
|---
| config.def.h |  1 +
| x.c          | 37 ++++++++++++++++++++++++++++++++++---
| 2 files changed, 35 insertions(+), 3 deletions(-)
|
|diff --git a/config.def.h b/config.def.h
|index 0e01717..6c7293c 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 178.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/x.c b/x.c
|index 0422421..7379969 100644
|--- a/x.c
|+++ b/x.c
--------------------------
Patching file x.c using Plan A...
Hunk #1 succeeded at 56.
Hunk #2 succeeded at 239.
Hunk #3 succeeded at 796.
Hunk #4 succeeded at 1371.
Hmm...  Ignoring the trailing garbage.
done