From 936bb6e7cdff4fc7700a4f36a6b828b87d9f8241 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicholas.marriott@gmail.com>
Date: Fri, 21 Aug 2026 10:53:59 +0100
Subject: [PATCH] Regress for GitHub issue 5511 from Francesc Rosas.

---
 regress/tty-draw-line.sh | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/regress/tty-draw-line.sh b/regress/tty-draw-line.sh
index 09a956312..aa33982c9 100644
--- a/regress/tty-draw-line.sh
+++ b/regress/tty-draw-line.sh
@@ -105,6 +105,21 @@ sleep 1
 CLIENT=$($TMUX2 list-clients -F '#{client_name}' | head -1)
 [ -n "$CLIENT" ] || fail "no inner client"
 
+# A variation selector which widens the previous character must use window
+# coordinates when checking visibility in a pane with a nonzero x offset.
+$TMUX2 set -s variation-selector-always-wide on || exit 1
+WINDOW=$($TMUX2 neww -dPF '#{window_id}' "exec sleep 100") || exit 1
+PANE=$($TMUX2 splitw -dhPF '#{pane_id}' -t "$WINDOW" \
+	"exec sleep 100") || exit 1
+$TMUX2 selectw -t "$WINDOW" || exit 1
+$TMUX2 respawnp -k -t "$PANE" \
+	"printf '\nA\342\234\217\357\270\217B'; exec sleep 100" || exit 1
+sleep 1
+$TMUX2 capturep -p -t "$PANE" >$TMP || exit 1
+EXPECTED=$(printf 'A\342\234\217\357\270\217B')
+check_line 2 "$EXPECTED"
+$TMUX2 killw -t "$WINDOW" || exit 1
+
 # Long line, then short line: default cells after cellsize must clear stale text.
 capture
 check_line 1 "abcdefghijklmnopqrst"