From 68d4d6191c11a7318108124cea6b25ebbaeb9e64 Mon Sep 17 00:00:00 2001
From: Raphael Amorim <rapha850@gmail.com>
Date: Wed, 15 Apr 2026 09:03:44 +0200
Subject: [PATCH] add test progress bar

---
 misc/scripts/test-progress-bar.sh | 34 +++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100755 misc/scripts/test-progress-bar.sh

diff --git a/misc/scripts/test-progress-bar.sh b/misc/scripts/test-progress-bar.sh
new file mode 100755
index 00000000..82cdae25
--- /dev/null
+++ b/misc/scripts/test-progress-bar.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+#
+# Manual repro for OSC 9;4 progress-bar handling (issue #1509).
+# Run inside a Rio window. The fix is verified visually if the
+# indeterminate bar in phase 2 *moves* across the window — before
+# the fix it froze at the left edge because every heartbeat OSC
+# yanked the animation phase back to t=0.
+
+osc() { printf '\033]9;4;%s;%s\033\\' "$1" "$2"; }
+
+echo "== phase 1: determinate, climbing 0->100 =="
+for p in 0 10 20 30 40 50 60 70 80 90 100; do
+    osc 1 "$p"
+    sleep 0.15
+done
+
+echo "== phase 2: heartbeat indeterminate (issue #1509 repro) =="
+echo "(OSC 9;4;3 every 100ms for 6s — bar should slide L<->R, not freeze)"
+end=$(( $(date +%s) + 6 ))
+while [ "$(date +%s)" -lt "$end" ]; do
+    osc 3 0
+    sleep 0.1
+done
+
+echo "== phase 3: error state at 50% =="
+osc 2 50
+sleep 1.5
+
+echo "== phase 4: pause at 75% =="
+osc 4 75
+sleep 1.5
+
+echo "== phase 5: clear =="
+osc 0 0
-- 
2.51.2