From bae92ec6e921e6f16d040d805a371e027dd9a23f Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicm@cvs.openbsd.org>
Date: Fri, 15 Nov 2024 09:01:17 +0000
Subject: Turn off scrollbar when pane is in alternate screen, from Michael
 Grant, GitHub issue 4231.

---
 usr.bin/tmux/window.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'usr.bin/tmux/window.c')

diff --git a/usr.bin/tmux/window.c b/usr.bin/tmux/window.c
index e916410608c..f30a30ffd91 100644
--- a/usr.bin/tmux/window.c
+++ b/usr.bin/tmux/window.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: window.c,v 1.296 2024/11/05 09:41:17 nicm Exp $ */
+/* $OpenBSD: window.c,v 1.297 2024/11/15 09:01:16 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -1726,3 +1726,16 @@ window_pane_mode(struct window_pane *wp)
 	}
 	return (WINDOW_PANE_NO_MODE);
 }
+
+/* Return 1 if scrollbar is or should be displayed. */
+int
+window_pane_show_scrollbar(struct window_pane *wp, int sb_option)
+{
+	if (SCREEN_IS_ALTERNATE(wp->screen))
+		return (0);
+	if (sb_option == PANE_SCROLLBARS_ALWAYS ||
+	    (sb_option == PANE_SCROLLBARS_MODAL &&
+	    window_pane_mode(wp) != WINDOW_PANE_NO_MODE))
+		return (1);
+	return (0);
+}
-- 
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