From 73042686d8df4e9b6fc984120cc1b14021d3922e Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicholas.marriott@gmail.com>
Date: Sun, 20 Sep 2026 09:19:35 +0100
Subject: [PATCH] Test for 5599.

---
 regress/alerts.sh | 34 ++++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/regress/alerts.sh b/regress/alerts.sh
index 60d9a05f7..3f97b5328 100644
--- a/regress/alerts.sh
+++ b/regress/alerts.sh
@@ -2,8 +2,9 @@
 
 # monitor-activity, monitor-bell and monitor-silence: both the
 # alert-activity, alert-bell and alert-silence hooks and the winlink alert
-# flags (window_activity_flag, window_bell_flag, window_silence_flag and
-# the #, !, ~ characters in window_flags). The sessions are detached so
+# flags (window_activity_flag, window_bell_flag, window_silence_flag,
+# their session equivalents and the #, !, ~ characters in window_flags).
+# The sessions are detached so
 # alert flags are set even on the current window; the *-action options
 # still decide whether the hooks fire. Panes run cat: activity is
 # generated by the tty echo of send-keys and a bell by sending a BEL and
@@ -111,6 +112,24 @@ flags_have()
 	esac
 }
 
+assert_session_flag()
+{
+	flag="#{session_${1}_flag}"
+	expected=$2
+
+	# Only mon exists here. Check both window contexts and list-sessions.
+	for target in mon:w0 "mon:$3"; do
+		value=$($TMUX display -pt "$target" "$flag") ||
+			fail "display $flag failed"
+		[ "$value" = "$expected" ] ||
+			fail "expected $flag for $target to be '$expected' but got '$value'"
+	done
+	value=$($TMUX list-sessions -F "$flag") ||
+		fail "list-sessions $flag failed"
+	[ "$value" = "$expected" ] ||
+		fail "expected list-sessions $flag to be '$expected' but got '$value'"
+}
+
 flags_lack()
 {
 	target=$1
@@ -150,10 +169,12 @@ $TMUX set-hook -g alert-silence \
 # alert-bell and sets the bell flag, shown as ! in window_flags.
 $TMUX neww -d -t mon: -n bellw cat || fail "new-window bellw failed"
 assert_fmt_unchanged mon:bellw '#{window_bell_flag}' 0
+assert_session_flag bell 0 bellw
 flags_lack mon:bellw '!'
 bell mon:bellw
 wait_for @log '|alert-bell:mon:bellw'
 wait_for_fmt mon:bellw '#{window_bell_flag}' 1
+assert_session_flag bell 1 bellw
 flags_have mon:bellw '!'
 
 # Bells are not deduplicated: a second bell fires the hook again even
@@ -164,6 +185,7 @@ wait_for @log '|alert-bell:mon:bellw|alert-bell:mon:bellw'
 # Selecting the window clears the alert flags.
 $TMUX selectw -t mon:bellw || fail "select-window bellw failed"
 wait_for_fmt mon:bellw '#{window_bell_flag}' 0
+assert_session_flag bell 0 bellw
 flags_lack mon:bellw '!'
 $TMUX selectw -t mon:w0 || fail "select-window w0 failed"
 
@@ -173,6 +195,7 @@ $TMUX set -g @log '' || fail "reset @log failed"
 bell mon:w0
 wait_for @log '|alert-bell:mon:w0'
 wait_for_fmt mon:w0 '#{window_bell_flag}' 1
+assert_session_flag bell 1 bellw
 $TMUX selectw -t mon:bellw || fail "select-window bellw failed"
 $TMUX selectw -t mon:w0 || fail "select-window w0 failed"
 wait_for_fmt mon:w0 '#{window_bell_flag}' 0
@@ -199,6 +222,7 @@ $TMUX neww -d -t mon: -n actw cat || fail "new-window actw failed"
 $TMUX set -g @log '' || fail "reset @log failed"
 activity mon:actw
 assert_fmt_unchanged mon:actw '#{window_activity_flag}' 0
+assert_session_flag activity 0 actw
 assert_unchanged @log ''
 
 # With monitor-activity on, output fires alert-activity and sets the
@@ -208,6 +232,7 @@ $TMUX set -wt mon:actw monitor-activity on ||
 activity mon:actw
 wait_for @log '|alert-activity:mon:actw'
 wait_for_fmt mon:actw '#{window_activity_flag}' 1
+assert_session_flag activity 1 actw
 flags_have mon:actw '#'
 
 # While the flag is set further activity does not fire the hook again.
@@ -234,6 +259,7 @@ exec 3>"$OUT/fifo"
 wait_for_fmt mon: '#{session_attached}' 1
 $TMUX selectw -t mon:actw || fail "select-window actw failed"
 wait_for_fmt mon:actw '#{window_activity_flag}' 0
+assert_session_flag activity 0 actw
 flags_lack mon:actw '#'
 $TMUX selectw -t mon:w0 || fail "select-window w0 failed"
 exec 3>&-
@@ -250,6 +276,7 @@ $TMUX set -wt mon:w0 monitor-activity on ||
 $TMUX set -g @log '' || fail "reset @log failed"
 activity mon:w0
 wait_for_fmt mon:w0 '#{window_activity_flag}' 1
+assert_session_flag activity 1 actw
 assert_unchanged @log ''
 $TMUX set -wut mon:w0 monitor-activity ||
 	fail "unset monitor-activity w0 failed"
@@ -273,16 +300,19 @@ $TMUX selectw -t mon:w0 || fail "select-window w0 failed"
 # running.
 $TMUX neww -d -t mon: -n silw cat || fail "new-window silw failed"
 assert_fmt_unchanged mon:silw '#{window_silence_flag}' 0
+assert_session_flag silence 0 silw
 $TMUX set -g @log '' || fail "reset @log failed"
 $TMUX set -wt mon:silw monitor-silence 1 || fail "set monitor-silence failed"
 wait_for @log '|alert-silence:mon:silw'
 wait_for_fmt mon:silw '#{window_silence_flag}' 1
+assert_session_flag silence 1 silw
 flags_have mon:silw '~'
 assert_unchanged @log '|alert-silence:mon:silw'
 $TMUX set -wt mon:silw monitor-silence 0 ||
 	fail "reset monitor-silence failed"
 $TMUX selectw -t mon:silw || fail "select-window silw failed"
 wait_for_fmt mon:silw '#{window_silence_flag}' 0
+assert_session_flag silence 0 silw
 flags_lack mon:silw '~'
 $TMUX selectw -t mon:w0 || fail "select-window w0 failed"