diff --git a/regress/hooks-notify.sh b/regress/hooks-notify.sh
index 37d1cd651..045b80af6 100644
--- a/regress/hooks-notify.sh
+++ b/regress/hooks-notify.sh
@@ -11,11 +11,13 @@ OUT=$(mktemp -d)
 TMUX_TMPDIR="$OUT"
 export TMUX_TMPDIR
 TMUX="$TEST_TMUX -LtestA$$ -f/dev/null"
+TMUX2="$TEST_TMUX -LtestB$$ -f/dev/null"
 
 fail()
 {
 	echo "$*" >&2
 	$TMUX kill-server 2>/dev/null || true
+	$TMUX2 kill-server 2>/dev/null || true
 	rm -rf "$OUT"
 	exit 1
 }
@@ -23,6 +25,7 @@ fail()
 cleanup()
 {
 	$TMUX kill-server 2>/dev/null || true
+	$TMUX2 kill-server 2>/dev/null || true
 	rm -rf "$OUT"
 }
 trap cleanup EXIT
@@ -92,6 +95,23 @@ wait_for @w 'window-unlinked:main:mywin'
 $TMUX set-hook -gu window-linked || fail "unset window-linked failed"
 $TMUX set-hook -gu window-unlinked || fail "unset window-unlinked failed"
 
+# window-created and window-closed are actual window lifetime hooks.
+$TMUX set -g @wc 0 || fail "set @wc failed"
+$TMUX set-hook -g window-created \
+	'set -gF @wc "#{@wc}|#{hook}:#{hook_window}:#{hook_window_name}"' ||
+	fail "set-hook window-created failed"
+$TMUX set-hook -g window-closed \
+	'set -gF @wc "#{@wc}|#{hook}:#{hook_window}:#{hook_window_name}"' ||
+	fail "set-hook window-closed failed"
+$TMUX neww -d -t main: -n lifetime || fail "new-window lifetime failed"
+window=$($TMUX display -pt main:lifetime '#{window_id}') ||
+	fail "display lifetime window failed"
+wait_for @wc "0|window-created:$window:lifetime"
+$TMUX kill-window -t main:lifetime || fail "kill-window lifetime failed"
+wait_for @wc "0|window-created:$window:lifetime|window-closed:$window:lifetime"
+$TMUX set-hook -gu window-created || fail "unset window-created failed"
+$TMUX set-hook -gu window-closed || fail "unset window-closed failed"
+
 # window-renamed sees the window id.
 window=$($TMUX display -pt main:0 '#{window_id}') ||
 	fail "display window_id failed"
@@ -114,26 +134,75 @@ $TMUX set-hook -gu window-layout-changed ||
 	fail "unset window-layout-changed failed"
 
 # window-pane-changed from select-pane.
+old_pane=$($TMUX display -pt main:0.0 '#{pane_id}') ||
+	fail "display old pane failed"
+new_pane=$($TMUX display -pt main:0.1 '#{pane_id}') ||
+	fail "display new pane failed"
 $TMUX set -g @p 0 || fail "set @p failed"
 $TMUX set-hook -g window-pane-changed \
-	'set -gF @p "#{hook}:#{hook_window}"' ||
+	'set -gF @p "#{hook}:#{hook_window}:#{hook_pane}:#{hook_old_pane}:#{hook_new_pane}"' ||
 	fail "set-hook window-pane-changed failed"
 $TMUX selectp -t main:0.1 || fail "select-pane failed"
-wait_for @p "window-pane-changed:$window"
+wait_for @p "window-pane-changed:$window:$new_pane:$old_pane:$new_pane"
+
+# window-pane-changed from removing the active pane.
+$TMUX set -g @p 0 || fail "reset @p failed"
+$TMUX killp -t "$new_pane" || fail "kill active pane failed"
+wait_for @p "window-pane-changed:$window:$old_pane:$new_pane:$old_pane"
 $TMUX set-hook -gu window-pane-changed ||
 	fail "unset window-pane-changed failed"
 
 # session-window-changed from select-window.
 $TMUX neww -d -t main: -n w2 || fail "new-window w2 failed"
+old_window=$($TMUX display -pt main:0 '#{window_id}') ||
+	fail "display old window failed"
+new_window=$($TMUX display -pt main:w2 '#{window_id}') ||
+	fail "display new window failed"
+old_index=$($TMUX display -pt main:0 '#{window_index}') ||
+	fail "display old window index failed"
+new_index=$($TMUX display -pt main:w2 '#{window_index}') ||
+	fail "display new window index failed"
 $TMUX set -g @c 0 || fail "set @c failed"
 $TMUX set-hook -g session-window-changed \
-	'set -gF @c "#{hook}:#{hook_session_name}"' ||
+	'set -gF @c "#{hook}:#{hook_session_name}:#{hook_window}:#{hook_old_window}:#{hook_new_window}:#{hook_old_window_index}->#{hook_new_window_index}"' ||
 	fail "set-hook session-window-changed failed"
 $TMUX selectw -t main:w2 || fail "select-window failed"
-wait_for @c 'session-window-changed:main'
+wait_for @c "session-window-changed:main:$new_window:$old_window:$new_window:$old_index->$new_index"
 $TMUX set-hook -gu session-window-changed ||
 	fail "unset session-window-changed failed"
 
+# session-added-to-group and session-removed-from-group carry group details.
+$TMUX set -g @sg 0 || fail "set @sg failed"
+$TMUX set-hook -g session-added-to-group \
+	'set -gF @sg "#{@sg}|#{hook}:#{hook_session_name}:#{hook_group}:#{hook_group_size}"' ||
+	fail "set-hook session-added-to-group failed"
+$TMUX set-hook -g session-removed-from-group \
+	'set -gF @sg "#{@sg}|#{hook}:#{hook_session_name}:#{hook_group}:#{hook_group_size}"' ||
+	fail "set-hook session-removed-from-group failed"
+$TMUX new -d -s group-a || fail "new-session group-a failed"
+$TMUX new -d -s group-b -t group-a || fail "new-session group-b failed"
+wait_for @sg "0|session-added-to-group:group-a:group-a:1|session-added-to-group:group-b:group-a:2"
+$TMUX kill-session -t group-b || fail "kill-session group-b failed"
+wait_for @sg "0|session-added-to-group:group-a:group-a:1|session-added-to-group:group-b:group-a:2|session-removed-from-group:group-b:group-a:2"
+$TMUX set-hook -gu session-added-to-group ||
+	fail "unset session-added-to-group failed"
+$TMUX set-hook -gu session-removed-from-group ||
+	fail "unset session-removed-from-group failed"
+$TMUX kill-session -t group-a || fail "kill-session group-a failed"
+
+# window-resized carries old and new dimensions.
+old_size=$($TMUX display -pt main:0 '#{window_width},#{window_height}') ||
+	fail "display old window size failed"
+$TMUX set -g @wr 0 || fail "set @wr failed"
+$TMUX set-hook -g window-resized \
+	'set -gF @wr "#{hook}:#{hook_window}:#{hook_old_width},#{hook_old_height}->#{hook_width},#{hook_height}"' ||
+	fail "set-hook window-resized failed"
+$TMUX resizew -t main:0 -x 70 -y 20 || fail "resize-window failed"
+new_size=$($TMUX display -pt main:0 '#{window_width},#{window_height}') ||
+	fail "display new window size failed"
+wait_for @wr "window-resized:$old_window:$old_size->$new_size"
+$TMUX set-hook -gu window-resized || fail "unset window-resized failed"
+
 # pane-mode-changed from entering and leaving copy mode.
 $TMUX set -g @m 0 || fail "set @m failed"
 pane=$($TMUX display -pt main:0.0 '#{pane_id}') ||
@@ -168,18 +237,44 @@ $TMUX set-hook -gu pane-died || fail "unset pane-died failed"
 $TMUX killp -t "$pane" || fail "kill-pane failed"
 $TMUX set -g remain-on-exit off || fail "reset remain-on-exit failed"
 
-# pane-title-changed when a pane sets its title.
+# pane-title-changed from split-window -T.
 $TMUX set -g @t 0 || fail "set @t failed"
 $TMUX set-hook -g pane-title-changed \
-	'set -gF @t "#{hook}:#{hook_pane}:#{pane_title}"' ||
+	'set -gF @t "#{hook}:#{hook_pane}:#{hook_new_title}:#{pane_title}"' ||
 	fail "set-hook pane-title-changed failed"
+pane=$($TMUX splitw -d -t main:0 -T splittitle -P -F '#{pane_id}' \
+	'sleep 30') ||
+	fail "split-window title option failed"
+wait_for @t "pane-title-changed:$pane:splittitle:splittitle"
+$TMUX killp -t "$pane" || fail "kill-pane title option failed"
+
+# pane-title-changed from select-pane -T.
+$TMUX set -g @t 0 || fail "reset @t select title failed"
+pane=$($TMUX display -pt main:0.0 '#{pane_id}') ||
+	fail "display select title pane failed"
+$TMUX selectp -t "$pane" -T selecttitle || fail "select-pane title failed"
+wait_for @t "pane-title-changed:$pane:selecttitle:selecttitle"
+
+# pane-title-changed when a pane sets its title.
+$TMUX set -g @t 0 || fail "reset @t OSC title failed"
 pane=$($TMUX splitw -d -t main:0 -P -F '#{pane_id}' \
 	'printf "\033]2;mytitle\007"; sleep 30') ||
 	fail "split-window title failed"
-wait_for @t "pane-title-changed:$pane:mytitle"
+wait_for @t "pane-title-changed:$pane:mytitle:mytitle"
+$TMUX killp -t "$pane" || fail "kill-pane title failed"
+
+# pane-title-changed from popping the title stack.
+$TMUX set -g @t 0 || fail "reset @t title pop failed"
+$TMUX set-hook -g pane-title-changed \
+	'set -gF @t "#{@t}|#{hook_new_title}"' ||
+	fail "set-hook pane-title-changed pop failed"
+pane=$($TMUX splitw -d -t main:0 -P -F '#{pane_id}' \
+	'printf "\033]2;stackbase\007\033[22;0t\033]2;stacktemp\007\033[23;0t"; sleep 30') ||
+	fail "split-window title pop failed"
+wait_for @t "0|stackbase|stacktemp|stackbase"
 $TMUX set-hook -gu pane-title-changed ||
 	fail "unset pane-title-changed failed"
-$TMUX killp -t "$pane" || fail "kill-pane title failed"
+$TMUX killp -t "$pane" || fail "kill-pane title pop failed"
 
 # pane-created payload from a command pane, an empty pane, and a respawn.
 $TMUX set -g @pc 0 || fail "set @pc failed"
@@ -204,6 +299,82 @@ wait_for @pc "pane-created:$pane:\"sleep 30\":0:1"
 $TMUX killp -t "$pane" || fail "kill-pane pane-created respawn failed"
 $TMUX set-hook -gu pane-created || fail "unset pane-created failed"
 
+# pane-moved from break-pane and join-pane.
+$TMUX neww -d -t main: -n move-a 'sleep 30' ||
+	fail "new-window move-a failed"
+pane=$($TMUX splitw -d -t main:move-a -P -F '#{pane_id}' 'sleep 30') ||
+	fail "split-window pane-moved failed"
+target=$($TMUX display -pt main:move-a.0 '#{pane_id}') ||
+	fail "display pane-moved target failed"
+old_window=$($TMUX display -pt "$pane" '#{window_id}') ||
+	fail "display pane-moved old window failed"
+old_index=$($TMUX display -pt "$pane" '#{window_index}') ||
+	fail "display pane-moved old index failed"
+$TMUX set -g @pm 0 || fail "set @pm failed"
+$TMUX set-hook -g pane-moved \
+	'set -gF @pm "#{hook}:#{hook_pane}:#{hook_old_window}:#{hook_old_window_index}->#{hook_new_window}:#{hook_new_window_index}"' ||
+	fail "set-hook pane-moved failed"
+$TMUX breakp -d -s "$pane" -n move-b -t main: ||
+	fail "break-pane pane-moved failed"
+new_window=$($TMUX display -pt "$pane" '#{window_id}') ||
+	fail "display pane-moved break new window failed"
+new_index=$($TMUX display -pt "$pane" '#{window_index}') ||
+	fail "display pane-moved break new index failed"
+wait_for @pm "pane-moved:$pane:$old_window:$old_index->$new_window:$new_index"
+
+$TMUX set -g @pm 0 || fail "reset @pm join failed"
+old_window=$new_window
+old_index=$new_index
+$TMUX joinp -d -s "$pane" -t "$target" ||
+	fail "join-pane pane-moved failed"
+new_window=$($TMUX display -pt "$pane" '#{window_id}') ||
+	fail "display pane-moved join new window failed"
+new_index=$($TMUX display -pt "$pane" '#{window_index}') ||
+	fail "display pane-moved join new index failed"
+wait_for @pm "pane-moved:$pane:$old_window:$old_index->$new_window:$new_index"
+$TMUX kill-window -t main:move-a || fail "kill-window move-a failed"
+
+# pane-moved from cross-window swap-pane fires once for each pane.
+$TMUX neww -d -t main: -n swap-a 'sleep 30' ||
+	fail "new-window swap-a failed"
+$TMUX neww -d -t main: -n swap-b 'sleep 30' ||
+	fail "new-window swap-b failed"
+pane1=$($TMUX display -pt main:swap-a.0 '#{pane_id}') ||
+	fail "display swap pane1 failed"
+pane2=$($TMUX display -pt main:swap-b.0 '#{pane_id}') ||
+	fail "display swap pane2 failed"
+window1=$($TMUX display -pt "$pane1" '#{window_id}') ||
+	fail "display swap window1 failed"
+window2=$($TMUX display -pt "$pane2" '#{window_id}') ||
+	fail "display swap window2 failed"
+index1=$($TMUX display -pt "$pane1" '#{window_index}') ||
+	fail "display swap index1 failed"
+index2=$($TMUX display -pt "$pane2" '#{window_index}') ||
+	fail "display swap index2 failed"
+$TMUX set -g @pm 0 || fail "reset @pm swap failed"
+$TMUX set-hook -g pane-moved \
+	'set -gF @pm "#{@pm}|#{hook_pane}:#{hook_old_window}:#{hook_old_window_index}->#{hook_new_window}:#{hook_new_window_index}"' ||
+	fail "set-hook pane-moved swap failed"
+$TMUX swapp -d -s "$pane1" -t "$pane2" ||
+	fail "swap-pane pane-moved failed"
+wait_for @pm "0|$pane1:$window1:$index1->$window2:$index2|$pane2:$window2:$index2->$window1:$index1"
+$TMUX set-hook -gu pane-moved || fail "unset pane-moved failed"
+$TMUX kill-window -t main:swap-a || fail "kill-window swap-a failed"
+$TMUX kill-window -t main:swap-b || fail "kill-window swap-b failed"
+
+# pane-bell fires for the actual pane even when bell alerts are disabled.
+pane=$($TMUX neww -d -t main: -n raw-bell -P -F '#{pane_id}' 'cat') ||
+	fail "new-window pane-bell failed"
+$TMUX setw -t main:raw-bell monitor-bell off ||
+	fail "set monitor-bell off failed"
+$TMUX set -g @pb 0 || fail "set @pb failed"
+$TMUX set-hook -g pane-bell 'set -gF @pb "#{hook}:#{hook_pane}"' ||
+	fail "set-hook pane-bell failed"
+$TMUX send-keys -t "$pane" -H 07 0a || fail "send-keys pane-bell failed"
+wait_for @pb "pane-bell:$pane"
+$TMUX set-hook -gu pane-bell || fail "unset pane-bell failed"
+$TMUX kill-window -t main:raw-bell || fail "kill-window pane-bell failed"
+
 # pane-resized carries old and new dimensions.
 pane=$($TMUX splitw -d -t main:0 -P -F '#{pane_id}' 'sleep 30') ||
 	fail "split-window pane-resized failed"
@@ -276,6 +447,13 @@ $TMUX killp -t "$pane" || fail "kill-pane zoom failed"
 
 # client-attached and client-detached using a control client.
 $TMUX set -g @a 0 || fail "set @a failed"
+$TMUX set -g @cl 0 || fail "set @cl failed"
+$TMUX set-hook -g client-created \
+	'set -gF @cl "#{@cl}|#{hook}:#{hook_client}"' ||
+	fail "set-hook client-created failed"
+$TMUX set-hook -g client-closed \
+	'set -gF @cl "#{@cl}|#{hook}:#{hook_client}"' ||
+	fail "set-hook client-closed failed"
 $TMUX set-hook -g client-attached 'set -gF @a "#{hook}"' ||
 	fail "set-hook client-attached failed"
 $TMUX set-hook -g client-detached 'set -gF @a "#{hook}"' ||
@@ -284,9 +462,72 @@ mkfifo "$OUT/fifo" || fail "mkfifo failed"
 $TMUX -C attach -t main <"$OUT/fifo" >"$OUT/control.out" 2>&1 &
 exec 3>"$OUT/fifo"
 wait_for @a 'client-attached'
+
+# client-session-changed carries old and new sessions.
+$TMUX new -d -s client-target || fail "new-session client target failed"
+client=$($TMUX list-clients -F '#{client_name} #{client_control_mode}' |
+	awk '$2 == 1 { print $1; exit }') ||
+	fail "list control client failed"
+[ -n "$client" ] || fail "no control client found"
+wait_for @cl "0|client-created:$client"
+old_session=$($TMUX display -pt main '#{session_id}') ||
+	fail "display old client session failed"
+new_session=$($TMUX display -pt client-target '#{session_id}') ||
+	fail "display new client session failed"
+$TMUX set -g @cs 0 || fail "set @cs failed"
+$TMUX set-hook -g client-session-changed \
+	'set -gF @cs "#{hook}:#{hook_client}:#{hook_session}:#{hook_old_session}:#{hook_new_session}"' ||
+	fail "set-hook client-session-changed failed"
+$TMUX switch-client -c "$client" -t client-target ||
+	fail "switch-client session failed"
+wait_for @cs "client-session-changed:$client:$new_session:$old_session:$new_session"
+$TMUX set-hook -gu client-session-changed ||
+	fail "unset client-session-changed failed"
+
 exec 3>&-
 wait_for @a 'client-detached'
+wait_for @cl "0|client-created:$client|client-closed:$client"
+$TMUX set-hook -gu client-created || fail "unset client-created failed"
+$TMUX set-hook -gu client-closed || fail "unset client-closed failed"
 $TMUX set-hook -gu client-attached || fail "unset client-attached failed"
 $TMUX set-hook -gu client-detached || fail "unset client-detached failed"
 
+# client-resized carries old and new dimensions.
+$TMUX2 new -d -s resize -x 80 -y 24 'sleep 30' ||
+	fail "new-session client-resized failed"
+$TMUX2 set -g @cr 0 || fail "set @cr failed"
+$TMUX2 set-hook -g client-resized \
+	'set -gF @cr "#{hook}:#{hook_client}:#{hook_old_width},#{hook_old_height}->#{hook_width},#{hook_height}"' ||
+	fail "set-hook client-resized failed"
+$TMUX neww -d -n resize-client "$TMUX2 attach -t resize" ||
+	fail "new outer window for client-resized failed"
+i=0
+client=
+while [ $i -lt 30 ]; do
+	client=$($TMUX2 list-clients -F '#{client_name}' 2>/dev/null |
+		awk 'NR == 1 { print; exit }')
+	[ -n "$client" ] && break
+	i=$((i + 1))
+	sleep 0.2
+done
+[ -n "$client" ] || fail "inner client did not attach"
+old_size=$($TMUX2 list-clients -F '#{client_width},#{client_height}') ||
+	fail "display old client size failed"
+$TMUX resizew -t resize-client -x 70 -y 20 ||
+	fail "resize outer client window failed"
+i=0
+while [ $i -lt 30 ]; do
+	value=$($TMUX2 show -gqv @cr 2>/dev/null || true)
+	new_size=$($TMUX2 list-clients -F '#{client_width},#{client_height}' \
+		2>/dev/null || true)
+	expected="client-resized:$client:$old_size->$new_size"
+	[ "$new_size" != "$old_size" ] && [ "$value" = "$expected" ] &&
+		break
+	i=$((i + 1))
+	sleep 0.2
+done
+[ "$value" = "$expected" ] ||
+	fail "expected @cr to be '$expected' but got '$value'"
+$TMUX2 set-hook -gu client-resized || fail "unset client-resized failed"
+
 exit 0