Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 1a2f76ad1a0ebf65ae7739cd102b69c02fdcd0ba Mon Sep 17 00:00:00 2001
|From: Miles Alan <m@milesalan.com>
|Date: Wed, 30 Sep 2020 08:16:47 -0500
|Subject: [PATCH] nonblockingstdincontrol: Add Non-blocking stdin and control
| character reloading
|
|Read from stdin continously in parallel to X events. And also adds support
|for using control characters for reloading options (e.g. emptying list
|and setting curr/sel).
|
|The following control characters are supported when sent at the beginning of
|a line:
|\f - Clear the current items prior to following line
|\a - Set the following line to be equal to sel
|\b - Set the following line to be equal to curr
|---
| dmenu.1 |   6 +--
| dmenu.c | 144 ++++++++++++++++++++++++++++++++++++++------------------
| 2 files changed, 98 insertions(+), 52 deletions(-)
|
|diff --git a/dmenu.1 b/dmenu.1
|index 323f93c..a07532d 100644
|--- a/dmenu.1
|+++ b/dmenu.1
--------------------------
Patching file dmenu.1 using Plan A...
Hunk #1 succeeded at 3.
Hunk #2 succeeded at 40.
Hmm...  The next patch looks like a unified diff to me...
The text leading up to this was:
--------------------------
|diff --git a/dmenu.c b/dmenu.c
|index 6b8f51b..cc87b04 100644
|--- a/dmenu.c
|+++ b/dmenu.c
--------------------------
Patching file dmenu.c using Plan A...
Hunk #1 succeeded at 1.
Hunk #2 succeeded at 9.
Hunk #3 succeeded at 34.
Hunk #4 succeeded at 45.
Hunk #5 succeeded at 178.
Hunk #6 succeeded at 226.
Hunk #7 succeeded at 237.
Hunk #8 succeeded at 271.
Hunk #9 succeeded at 532.
Hunk #10 succeeded at 564.
Hunk #11 succeeded at 740.
Hunk #12 succeeded at 749.
Hunk #13 succeeded at 758.
Hunk #14 succeeded at 808.
Hmm...  Ignoring the trailing garbage.
done