From e361b8f8ffeab3cf7068a1e59bf3e0fa5a69419d Mon Sep 17 00:00:00 2001
From: nicm <nicm@openbsd.org>
Date: Mon, 21 Sep 2026 10:43:37 +0000
Subject: [PATCH] Do not trim all lines to make a zero line grid which reflow
 does not like, from Kaixuan Li.

---
 window-copy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/window-copy.c b/window-copy.c
index 3d33f3f86..fd42e91bd 100644
--- a/window-copy.c
+++ b/window-copy.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: window-copy.c,v 1.430 2026/09/21 10:22:31 nicm Exp $ */
+/* $OpenBSD: window-copy.c,v 1.431 2026/09/21 10:43:37 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -401,7 +401,7 @@ window_copy_clone_screen(struct screen *src, struct screen *hint, u_int *cx,
 
 	sy = screen_hsize(src) + screen_size_y(src);
 	if (trim) {
-		while (sy > screen_hsize(src)) {
+		while (sy > screen_hsize(src) + 1) {
 			gl = grid_peek_line(src->grid, sy - 1);
 			if (gl == NULL || gl->cellused != 0)
 				break;