Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|From 1892290c3b0ef064083c8af4e4bec443a36ca5c8 Mon Sep 17 00:00:00 2001
|From: "Avi Halachmi (:avih)" <avihpit@yahoo.com>
|Date: Tue, 26 Feb 2019 22:37:49 +0200
|Subject: [PATCH] auto-sync: draw on idle to avoid flicker/tearing
|
|st could easily tear/flicker with animation or other unattended
|output. This commit eliminates most of the tear/flicker.
|
|Before this commit, the display timing had two "modes":
|
|- Interactively, st was waiting fixed `1000/xfps` ms after forwarding
|  the kb/mouse event to the application and before drawing.
|
|- Unattended, and specifically with animations, the draw frequency was
|  throttled to `actionfps`. Animation at a higher rate would throttle
|  and likely tear, and at lower rates it was tearing big frames
|  (specifically, when one `read` didn't get a full "frame").
|
|The interactive behavior was decent, but it was impossible to get good
|unattended-draw behavior even with carefully chosen configuration.
|
|This commit changes the behavior such that it draws on idle instead of
|using fixed latency/frequency. This means that it tries to draw only
|when it's very likely that the application has completed its output
|(or after some duration without idle), so it mostly succeeds to avoid
|tear, flicker, and partial drawing.
|
|The config values minlatency/maxlatency replace xfps/actionfps and
|define the range which the algorithm is allowed to wait from the
|initial draw-trigger until the actual draw. The range enables the
|flexibility to choose when to draw - when least likely to flicker.
|
|It also unifies the interactive and unattended behavior and config
|values, which makes the code simpler as well - without sacrificing
|latency during interactive use, because typically interactively idle
|arrives very quickly, so the wait is typically minlatency.
|
|While it only slighly improves interactive behavior, for animations
|and other unattended-drawing it improves greatly, as it effectively
|adapts to any [animation] output rate without tearing, throttling,
|redundant drawing, or unnecessary delays (sounds impossible, but it
|works).
|---
| config.def.h |  11 +++--
| x.c          | 120 ++++++++++++++++++++++++---------------------------
| 2 files changed, 65 insertions(+), 66 deletions(-)
|
|diff --git a/config.def.h b/config.def.h
|index 0895a1f..fdbacfd 100644
|--- a/config.def.h
|+++ b/config.def.h
--------------------------
Patching file config.def.h using Plan A...
Hunk #1 succeeded at 43.
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 e5f1737..cbbd11f 100644
|--- a/x.c
|+++ b/x.c
--------------------------
Patching file x.c using Plan A...
Hunk #1 succeeded at 1867.
Hunk #2 succeeded at 1890.
Hmm...  Ignoring the trailing garbage.
done