Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From eacbcf7de84e81a27759d086ad1a5ea9e41f9894 Mon Sep 17 00:00:00 2001
|From: Santtu Lakkala <inz@inz.fi>
|Date: Wed, 16 Feb 2022 20:34:20 +0200
|Subject: [PATCH] Loop through urls on screen and copy to clipboard
|
|Based on the previous highlighting patches, slightly simplified and
|fixes graphical issues with mixed copyurl and selection.
|---
| config.def.h |  1 +
| st.c         | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++
| st.h         |  1 +
| 3 files changed, 83 insertions(+)
|
|diff --git a/config.def.h b/config.def.h
|index 91ab8ca..3f365c7 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 201.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/st.c b/st.c
|index 51049ba..931b29f 100644
|--- a/st.c
|+++ b/st.c
--------------------------
Patching file st.c using Plan A...
Hunk #1 succeeded at 200.
Hunk #2 succeeded at 2689.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/st.h b/st.h
|index 519b9bd..0458005 100644
|--- a/st.h
|+++ b/st.h
--------------------------
Patching file st.h using Plan A...
Hunk #1 succeeded at 85.
Hmm...  Ignoring the trailing garbage.
done