Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From f64e5ddc9bc47dd3bca79a1eac214525ba005caf Mon Sep 17 00:00:00 2001
|From: Alexander Courtis <acourtis@atlassian.com>
|Date: Sat, 15 Feb 2020 14:23:26 +1100
|Subject: [PATCH] Grab all keycodes that map to keys.keysym
|
|There may be multiple keycodes that map to a keys.keysym. One such scenario is using xkb to remap a key: `caps:escape`
|
|When grabbing keys, we now scan all X keycode mappings and look for match.
|
|Changing keymaps via xkb or other means will not cause the keys to be "re-grabbed". This existing behaviour is desirable.
|
|---
| dwm.c | 26 ++++++++++++++++++++------
| 1 file changed, 20 insertions(+), 6 deletions(-)
|
|diff --git a/dwm.c b/dwm.c
|index cc4fce7..04f6220 100644
|--- a/dwm.c
|+++ b/dwm.c
--------------------------
Patching file dwm.c using Plan A...
Hunk #1 succeeded at 952 (offset -152 lines).
Hmm...  Ignoring the trailing garbage.
done