diff --git a/cmd-new-session.c b/cmd-new-session.c
index a3e74888..a397ccf9 100644
--- a/cmd-new-session.c
+++ b/cmd-new-session.c
@@ -102,7 +102,7 @@ cmd_new_session_exec(struct cmd *self, struct cmdq_item *item)
 	tmp = args_get(args, 's');
 	if (tmp != NULL) {
 		name = format_single(item, tmp, c, NULL, NULL, NULL);
-		newname = session_check_name(name);
+		newname = clean_name(name, "#:.");
 		if (newname == NULL) {
 			cmdq_error(item, "invalid session: %s", name);
 			free(name);
@@ -142,7 +142,7 @@ cmd_new_session_exec(struct cmd *self, struct cmdq_item *item)
 		else if (groupwith != NULL)
 			prefix = xstrdup(groupwith->name);
 		else {
-			prefix = session_check_name(group);
+			prefix = clean_name(group, "#:.");
 			if (prefix == NULL) {
 				cmdq_error(item, "invalid session group: %s",
 				    group);
diff --git a/cmd-rename-session.c b/cmd-rename-session.c
index 694f3c97..37b26100 100644
--- a/cmd-rename-session.c
+++ b/cmd-rename-session.c
@@ -52,7 +52,7 @@ cmd_rename_session_exec(struct cmd *self, struct cmdq_item *item)
 	char			*newname, *tmp;
 
 	tmp = format_single_from_target(item, args_string(args, 0));
-	newname = session_check_name(tmp);
+	newname = clean_name(tmp, "#:.");
 	if (newname == NULL) {
 		cmdq_error(item, "invalid session: %s", tmp);
 		free(tmp);
diff --git a/format.c b/format.c
index c693fca3..ef3453b4 100644
--- a/format.c
+++ b/format.c
@@ -120,6 +120,9 @@ format_job_cmp(struct format_job *fj1, struct format_job *fj2)
 /* Limit on recursion. */
 #define FORMAT_LOOP_LIMIT 100
 
+/* Limit on time taken (milliseconds). */
+#define FORMAT_TIME_LIMIT 100
+
 /* Format expand flags. */
 #define FORMAT_EXPAND_TIME 0x1
 #define FORMAT_EXPAND_NOJOBS 0x2
@@ -169,9 +172,11 @@ RB_GENERATE_STATIC(format_entry_tree, format_entry, entry, format_entry_cmp);
 struct format_expand_state {
 	struct format_tree	*ft;
 	u_int			 loop;
+	uint64_t		 start_time;
+	int			 flags;
+
 	time_t			 time;
 	struct tm		 tm;
-	int			 flags;
 };
 
 /* Format modifier. */
@@ -292,6 +297,7 @@ format_copy_state(struct format_expand_state *to,
 	to->time = from->time;
 	memcpy(&to->tm, &from->tm, sizeof to->tm);
 	to->flags = from->flags|flags;
+	to->start_time = from->start_time;
 }
 
 /* Format job update callback. */
@@ -5247,7 +5253,7 @@ format_replace(struct format_expand_state *es, const char *key, size_t keylen,
 			value = format_search(search, wp, new);
 		}
 		free(new);
-    } else if (modifiers & FORMAT_REPEAT) {
+	} else if (modifiers & FORMAT_REPEAT) {
 		/* Repeat multiple times. */
 		if (format_choose(es, copy, &left, &right, 1) != 0) {
 			format_log(es, "repeat syntax error: %s", copy);
@@ -5266,7 +5272,7 @@ format_replace(struct format_expand_state *es, const char *key, size_t keylen,
 		}
 		free(right);
 		free(left);
-    } else if (modifiers & FORMAT_NOT) {
+	} else if (modifiers & FORMAT_NOT) {
 		value = format_bool_op_1(es, copy, 1);
 	} else if (modifiers & FORMAT_NOT_NOT) {
 		value = format_bool_op_1(es, copy, 0);
@@ -5532,10 +5538,16 @@ format_expand1(struct format_expand_state *es, const char *fmt)
 	size_t			 off, len, n, outlen;
 	int			 ch, brackets;
 	char			 expanded[8192];
+	uint64_t		 t = get_timer();
 
 	if (fmt == NULL || *fmt == '\0')
 		return (xstrdup(""));
 
+	if (t - es->start_time >= FORMAT_TIME_LIMIT) {
+		format_log(es, "reached time limit (%llu)",
+		    (unsigned long long)(t - es->start_time));
+		return (xstrdup(""));
+	}
 	if (es->loop == FORMAT_LOOP_LIMIT) {
 		format_log(es, "reached loop limit (%u)", FORMAT_LOOP_LIMIT);
 		return (xstrdup(""));
@@ -5702,6 +5714,7 @@ format_expand_time(struct format_tree *ft, const char *fmt)
 	memset(&es, 0, sizeof es);
 	es.ft = ft;
 	es.flags = FORMAT_EXPAND_TIME;
+	es.start_time = get_timer();
 	return (format_expand1(&es, fmt));
 }
 
@@ -5714,6 +5727,7 @@ format_expand(struct format_tree *ft, const char *fmt)
 	memset(&es, 0, sizeof es);
 	es.ft = ft;
 	es.flags = 0;
+	es.start_time = get_timer();
 	return (format_expand1(&es, fmt));
 }
 
diff --git a/input.c b/input.c
index 671f5788..07f0ce76 100644
--- a/input.c
+++ b/input.c
@@ -2663,12 +2663,9 @@ input_exit_osc(struct input_ctx *ictx)
 		input_osc_4(ictx, p);
 		break;
 	case 7:
-		if (utf8_isvalid(p)) {
-			screen_set_path(sctx->s, p);
-			if (wp != NULL) {
-				server_redraw_window_borders(wp->window);
-				server_status_window(wp->window);
-			}
+		if (screen_set_path(sctx->s, p) && wp != NULL) {
+			server_redraw_window_borders(wp->window);
+			server_status_window(wp->window);
 		}
 		break;
 	case 8:
diff --git a/key-bindings.c b/key-bindings.c
index 9bc69045..16e77f52 100644
--- a/key-bindings.c
+++ b/key-bindings.c
@@ -467,6 +467,10 @@ key_bindings_init(void)
 		"bind -n MouseDown1Status { switch-client -t= }",
 		"bind -n C-MouseDown1Status { swap-window -t@ }",
 
+		/* Mouse button 1 down on default pane-border-format */
+		"bind -n MouseDown1Control9 { display-menu -t= -xM -yM -O -T 'Kill pane #{pane_index}?' 'Yes' 'y' { kill-pane -t= } 'No' 'n' {}}",
+		"bind -n MouseDown1Control8 { resize-pane -Z }",
+
 		/* Mouse wheel down on status line. */
 		"bind -n WheelDownStatus { next-window }",
 
diff --git a/names.c b/names.c
index aeb67338..8a04df73 100644
--- a/names.c
+++ b/names.c
@@ -166,7 +166,9 @@ parse_window_name(const char *in)
 
 	if (*name == '/')
 		name = basename(name);
-	name = xstrdup(name);
+	name = clean_name(name, "#");
 	free(copy);
+	if (name == NULL)
+		return (xstrdup(""));
 	return (name);
 }
diff --git a/options-table.c b/options-table.c
index 9070d94d..15da714c 100644
--- a/options-table.c
+++ b/options-table.c
@@ -1304,7 +1304,14 @@ const struct options_table_entry options_table[] = {
 	  .type = OPTIONS_TABLE_STRING,
 	  .scope = OPTIONS_TABLE_WINDOW|OPTIONS_TABLE_PANE,
 	  .default_str = "#{?pane_active,#[reverse],}#{pane_index}#[default] "
-			 "\"#{pane_title}\"",
+			 "\"#{pane_title}\""
+			 "#{?#{mouse},"
+				"#[align=right]"
+				"#[range=control|8]["
+					"#{?#{window_zoomed_flag},u,z}"
+				"]#[norange]"
+				"#[range=control|9][x]#[norange]"
+			",}",
 	  .text = "Format of text in the pane status lines."
 	},
 
diff --git a/screen.c b/screen.c
index 63c6009c..c93a689b 100644
--- a/screen.c
+++ b/screen.c
@@ -245,19 +245,28 @@ screen_set_cursor_colour(struct screen *s, int colour)
 int
 screen_set_title(struct screen *s, const char *title)
 {
-	if (!utf8_isvalid(title))
+	char	*new_title;
+
+	new_title = clean_name(title, "#");
+	if (new_title == NULL)
 		return (0);
 	free(s->title);
-	s->title = xstrdup(title);
+	s->title = new_title;
 	return (1);
 }
 
 /* Set screen path. */
-void
+int
 screen_set_path(struct screen *s, const char *path)
 {
+	char	*new_path;
+
+	new_path = clean_name(path, "#");
+	if (new_path == NULL)
+		return (0);
 	free(s->path);
-	utf8_stravis(&s->path, path, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
+	s->path = new_path;
+	return (1);
 }
 
 /* Push the current title onto the stack. */
diff --git a/server-client.c b/server-client.c
index 27131a89..ddc81032 100644
--- a/server-client.c
+++ b/server-client.c
@@ -41,6 +41,7 @@ static void	server_client_check_redraw(struct client *);
 static void	server_client_check_modes(struct client *);
 static void	server_client_set_title(struct client *);
 static void	server_client_set_path(struct client *);
+static void	server_client_set_progress_bar(struct client *);
 static void	server_client_reset_state(struct client *);
 static void	server_client_update_latest(struct client *);
 static void	server_client_dispatch(struct imsg *, void *);
@@ -2056,6 +2057,7 @@ server_client_check_redraw(struct client *c)
 			server_client_set_title(c);
 			server_client_set_path(c);
 		}
+		server_client_set_progress_bar(c);
 		screen_redraw_screen(c);
 	}
 
@@ -2122,6 +2124,23 @@ server_client_set_path(struct client *c)
 	}
 }
 
+/* Set client progress bar. */
+static void
+server_client_set_progress_bar(struct client *c)
+{
+	struct session		*s = c->session;
+	struct progress_bar	*pane_pb;
+
+	if (s->curw == NULL)
+		return;
+	pane_pb = &s->curw->window->active->base.progress_bar;
+	if (pane_pb->state == c->progress_bar.state &&
+	    pane_pb->progress == c->progress_bar.progress)
+		return;
+	memcpy(&c->progress_bar, pane_pb, sizeof c->progress_bar);
+	tty_set_progress_bar(&c->tty, &c->progress_bar);
+}
+
 /* Dispatch message from client. */
 static void
 server_client_dispatch(struct imsg *imsg, void *arg)
diff --git a/session.c b/session.c
index f58ec3f6..1e558977 100644
--- a/session.c
+++ b/session.c
@@ -229,24 +229,6 @@ session_destroy(struct session *s, int notify, const char *from)
 	session_remove_ref(s, __func__);
 }
 
-/* Sanitize session name. */
-char *
-session_check_name(const char *name)
-{
-	char	*copy, *cp, *new_name;
-
-	if (*name == '\0')
-		return (NULL);
-	copy = xstrdup(name);
-	for (cp = copy; *cp != '\0'; cp++) {
-		if (*cp == ':' || *cp == '.')
-			*cp = '_';
-	}
-	utf8_stravis(&new_name, copy, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
-	free(copy);
-	return (new_name);
-}
-
 /* Lock session if it has timed out. */
 static void
 session_lock_timer(__unused int fd, __unused short events, void *arg)
diff --git a/spawn.c b/spawn.c
index 964d0334..1c3c2a14 100644
--- a/spawn.c
+++ b/spawn.c
@@ -82,6 +82,7 @@ spawn_window(struct spawn_context *sc, char **cause)
 	struct winlink		*wl;
 	int			 idx = sc->idx;
 	u_int			 sx, sy, xpixel, ypixel;
+	char			*name;
 
 	spawn_log(__func__, sc);
 
@@ -180,8 +181,11 @@ spawn_window(struct spawn_context *sc, char **cause)
 	if (~sc->flags & SPAWN_RESPAWN) {
 		free(w->name);
 		if (sc->name != NULL) {
-			w->name = format_single(item, sc->name, c, s, NULL,
-			    NULL);
+			name = format_single(item, sc->name, c, s, NULL, NULL);
+			w->name = clean_name(name, "#");
+			free(name);
+			if (w->name == NULL)
+				w->name = xstrdup("");
 			options_set_number(w->options, "automatic-rename", 0);
 		} else
 			w->name = default_window_name(w);
diff --git a/status.c b/status.c
index 5ecf7bf9..f1e74c91 100644
--- a/status.c
+++ b/status.c
@@ -972,6 +972,49 @@ status_prompt_space(const struct utf8_data *ud)
 	return (*ud->data == ' ');
 }
 
+static key_code
+status_prompt_keypad_key(key_code key)
+{
+	if (key & KEYC_MASK_MODIFIERS)
+		return (key);
+
+	switch (key) {
+	case KEYC_KP_SLASH:
+		return ('/');
+	case KEYC_KP_STAR:
+		return ('*');
+	case KEYC_KP_MINUS:
+		return ('-');
+	case KEYC_KP_SEVEN:
+		return ('7');
+	case KEYC_KP_EIGHT:
+		return ('8');
+	case KEYC_KP_NINE:
+		return ('9');
+	case KEYC_KP_PLUS:
+		return ('+');
+	case KEYC_KP_FOUR:
+		return ('4');
+	case KEYC_KP_FIVE:
+		return ('5');
+	case KEYC_KP_SIX:
+		return ('6');
+	case KEYC_KP_ONE:
+		return ('1');
+	case KEYC_KP_TWO:
+		return ('2');
+	case KEYC_KP_THREE:
+		return ('3');
+	case KEYC_KP_ENTER:
+		return ('\r');
+	case KEYC_KP_ZERO:
+		return ('0');
+	case KEYC_KP_PERIOD:
+		return ('.');
+	}
+	return (key);
+}
+
 /*
  * Translate key from vi to emacs. Return 0 to drop key, 1 to process the key
  * as an emacs key; return 2 to append to the buffer.
@@ -1383,6 +1426,9 @@ status_prompt_key(struct client *c, key_code key)
 	}
 	size = utf8_strlen(c->prompt_buffer);
 
+	key &= ~KEYC_MASK_FLAGS;
+	key = status_prompt_keypad_key(key);
+
 	if (c->prompt_flags & PROMPT_NUMERIC) {
 		if (key >= '0' && key <= '9')
 			goto append_key;
@@ -1392,7 +1438,6 @@ status_prompt_key(struct client *c, key_code key)
 		free(s);
 		return (1);
 	}
-	key &= ~KEYC_MASK_FLAGS;
 
 	if (c->prompt_flags & (PROMPT_SINGLE|PROMPT_QUOTENEXT)) {
 		if ((key & KEYC_MASK_KEY) == KEYC_BSPACE)
diff --git a/tmux.1 b/tmux.1
index a678b1a5..3ec0457a 100644
--- a/tmux.1
+++ b/tmux.1
@@ -4489,6 +4489,8 @@ mouse sequences.
 Supports the OSC 7 working directory extension.
 .It overline
 Supports the overline SGR attribute.
+.It progressbar
+Supports the OSC 9;4 progress bar extension.
 .It rectfill
 Supports the DECFRA rectangle fill escape sequence.
 .It RGB
@@ -7267,7 +7269,6 @@ Display a popup running
 when omitted) on
 .Ar target\-client .
 A popup is a rectangular box drawn over the top of any panes.
-Panes are not updated while a popup is present.
 If the command is run inside an existing popup, that popup is modified.
 Only the
 .Fl b ,
@@ -7855,6 +7856,8 @@ $ printf \[aq]\e033[4 q\[aq]
 If
 .Em Se
 is not set, \&Ss with argument 0 will be used to reset the cursor style instead.
+.It Em \&Spb
+Set the state and progress for the OSC9;4 progress bar.
 .It Em \&Swd
 Set the opening sequence for the working directory notification.
 The sequence is terminated using the standard
diff --git a/tmux.c b/tmux.c
index 8d390203..251b0336 100644
--- a/tmux.c
+++ b/tmux.c
@@ -281,6 +281,23 @@ get_timer(void)
 	return ((ts.tv_sec * 1000ULL) + (ts.tv_nsec / 1000000ULL));
 }
 
+char *
+clean_name(const char *name, const char* forbid)
+{
+	char	*copy, *cp, *new_name;
+
+	if (*name == '\0' || !utf8_isvalid(name))
+		return (NULL);
+	copy = xstrdup(name);
+	for (cp = copy; *cp != '\0'; cp++) {
+		if (strchr(forbid, *cp) != NULL)
+			*cp = '_';
+	}
+	utf8_stravis(&new_name, copy, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
+	free(copy);
+	return (new_name);
+}
+
 const char *
 sig2name(int signo)
 {
diff --git a/tmux.h b/tmux.h
index 6d420e09..56d96165 100644
--- a/tmux.h
+++ b/tmux.h
@@ -638,6 +638,7 @@ enum tty_code_code {
 	TTYC_SMUL,
 	TTYC_SMULX,
 	TTYC_SMXX,
+	TTYC_SPB,
 	TTYC_SXL,
 	TTYC_SS,
 	TTYC_SWD,
@@ -2017,6 +2018,7 @@ struct client {
 	char			*title;
 	char			*path;
 	const char		*cwd;
+	struct progress_bar	 progress_bar;
 
 	char			*term_name;
 	int			 term_features;
@@ -2361,6 +2363,7 @@ int		 checkshell(const char *);
 void		 setblocking(int, int);
 char 		*shell_argv0(const char *, int);
 uint64_t	 get_timer(void);
+char		*clean_name(const char *, const char *);
 const char	*sig2name(int);
 const char	*find_cwd(void);
 const char	*find_home(void);
@@ -2655,6 +2658,7 @@ void	tty_repeat_requests(struct tty *, int);
 void	tty_stop_tty(struct tty *);
 void	tty_set_title(struct tty *, const char *);
 void	tty_set_path(struct tty *, const char *);
+void	tty_set_progress_bar(struct tty *, struct progress_bar *);
 void	tty_default_attributes(struct tty *, const struct grid_cell *,
 	    struct colour_palette *, u_int, struct hyperlinks *);
 void	tty_update_mode(struct tty *, int, struct screen *);
@@ -3330,7 +3334,7 @@ void	 screen_set_default_cursor(struct screen *, struct options *);
 void	 screen_set_cursor_style(u_int, enum screen_cursor_style *, int *);
 void	 screen_set_cursor_colour(struct screen *, int);
 int	 screen_set_title(struct screen *, const char *);
-void	 screen_set_path(struct screen *, const char *);
+int	 screen_set_path(struct screen *, const char *);
 void	 screen_push_title(struct screen *);
 void	 screen_pop_title(struct screen *);
 void	 screen_set_progress_bar(struct screen *, enum progress_bar_state, int);
@@ -3636,7 +3640,6 @@ struct session	*session_create(const char *, const char *, const char *,
 void		 session_destroy(struct session *, int,	 const char *);
 void		 session_add_ref(struct session *, const char *);
 void		 session_remove_ref(struct session *, const char *);
-char		*session_check_name(const char *);
 void		 session_update_activity(struct session *, struct timeval *);
 struct session	*session_next_session(struct session *, struct sort_criteria *);
 struct session	*session_previous_session(struct session *,
diff --git a/tty-features.c b/tty-features.c
index c620c383..74e7922f 100644
--- a/tty-features.c
+++ b/tty-features.c
@@ -357,6 +357,17 @@ static const struct tty_feature tty_feature_sixel = {
 	TERM_SIXEL
 };
 
+/* Terminal supports the OSC 9;4 progress bar. */
+static const char *const tty_feature_progressbar_capabilities[] = {
+	"Spb=\\E]9;4;%p1%d;%p2%d\\E\\\\",
+	NULL
+};
+static const struct tty_feature tty_feature_progressbar = {
+	"progressbar",
+	tty_feature_progressbar_capabilities,
+	0
+};
+
 /* Available terminal features. */
 static const struct tty_feature *const tty_features[] = {
 	&tty_feature_256,
@@ -372,6 +383,7 @@ static const struct tty_feature *const tty_features[] = {
 	&tty_feature_mouse,
 	&tty_feature_osc7,
 	&tty_feature_overline,
+	&tty_feature_progressbar,
 	&tty_feature_rectfill,
 	&tty_feature_rgb,
 	&tty_feature_sixel,
@@ -475,45 +487,56 @@ tty_default_features(int *feat, const char *name, u_int version)
 	"256,RGB,bpaste,clipboard,mouse,strikethrough,title"
 		{ .name = "mintty",
 		  .features = TTY_FEATURES_BASE_MODERN_XTERM ","
-		              "ccolour,"
-		              "cstyle,"
-		              "extkeys,"
-		              "margins,"
-		              "overline,"
-		              "usstyle"
+			      "ccolour,"
+			      "cstyle,"
+			      "extkeys,"
+			      "margins,"
+			      "overline,"
+			      "usstyle"
 		},
 		{ .name = "tmux",
 		  .features = TTY_FEATURES_BASE_MODERN_XTERM ","
-		              "ccolour,"
-		              "cstyle,"
-		              "extkeys,"
-		              "focus,"
-		              "overline,"
-		              "usstyle,"
-		              "hyperlinks"
+			      "ccolour,"
+			      "cstyle,"
+			      "extkeys,"
+			      "focus,"
+			      "overline,"
+			      "usstyle,"
+			      "hyperlinks,"
+		  	      "progressbar"
 		},
 		{ .name = "rxvt-unicode",
 		  .features = "256,"
-		              "bpaste,"
-		              "ccolour,"
-		              "cstyle,"
-		              "mouse,"
-		              "title,"
-		              "ignorefkeys"
+			      "bpaste,"
+			      "ccolour,"
+			      "cstyle,"
+			      "mouse,"
+			      "title,"
+			      "ignorefkeys"
 		},
 		{ .name = "iTerm2",
 		  .features = TTY_FEATURES_BASE_MODERN_XTERM ","
-		              "cstyle,"
-		              "extkeys,"
-		              "margins,"
-		              "usstyle,"
-		              "sync,"
-		              "osc7,hyperlinks"
+			      "cstyle,"
+			      "extkeys,"
+			      "margins,"
+			      "usstyle,"
+			      "sync,"
+			      "osc7,"
+			      "hyperlinks,"
+		  	      "progressbar"
 		},
 		{ .name = "foot",
 		  .features = TTY_FEATURES_BASE_MODERN_XTERM ","
-		              "cstyle,"
-		              "extkeys"
+			      "cstyle,"
+			      "extkeys"
+		},
+		{ .name = "WezTerm",
+		  .features = TTY_FEATURES_BASE_MODERN_XTERM ","
+			      "ccolour,"
+			      "cstyle,"
+			      "extkeys,"
+			      "focus,"
+			      "usstyle"
 		},
 		{ .name = "XTerm",
 		  /*
@@ -522,10 +545,10 @@ tty_default_features(int *feat, const char *name, u_int version)
 		   * secondary DA shows VT420.
 		   */
 		  .features = TTY_FEATURES_BASE_MODERN_XTERM ","
-		              "ccolour,"
-		              "cstyle,"
-		              "extkeys,"
-		              "focus"
+			      "ccolour,"
+			      "cstyle,"
+			      "extkeys,"
+			      "focus"
 		}
 	};
 	u_int	i;
diff --git a/tty-keys.c b/tty-keys.c
index 05ec63c8..1336188d 100644
--- a/tty-keys.c
+++ b/tty-keys.c
@@ -1640,6 +1640,8 @@ tty_keys_extended_device_attributes(struct tty *tty, const char *buf,
 		tty_default_features(features, "mintty", 0);
 	else if (strncmp(tmp, "foot(", 5) == 0)
 		tty_default_features(features, "foot", 0);
+	else if (strncmp(tmp, "WezTerm ", 7) == 0)
+		tty_default_features(features, "WezTerm", 0);
 	log_debug("%s: received extended DA %.*s", c->name, (int)*size, buf);
 
 	free(c->term_type);
diff --git a/tty-term.c b/tty-term.c
index 29dbaf59..39bfd9d6 100644
--- a/tty-term.c
+++ b/tty-term.c
@@ -280,6 +280,7 @@ static const struct tty_term_code_entry tty_term_codes[] = {
 	[TTYC_SMULX] = { TTYCODE_STRING, "Smulx" },
 	[TTYC_SMUL] = { TTYCODE_STRING, "smul" },
 	[TTYC_SMXX] =  { TTYCODE_STRING, "smxx" },
+	[TTYC_SPB] = { TTYCODE_STRING, "Spb" },
 	[TTYC_SS] = { TTYCODE_STRING, "Ss" },
 	[TTYC_SWD] = { TTYCODE_STRING, "Swd" },
 	[TTYC_SYNC] = { TTYCODE_STRING, "Sync" },
diff --git a/tty.c b/tty.c
index 4f23d583..1fdd5c2f 100644
--- a/tty.c
+++ b/tty.c
@@ -3053,3 +3053,10 @@ tty_clipboard_query(struct tty *tty)
 		evtimer_add(&tty->clipboard_timer, &tv);
 	}
 }
+
+void
+tty_set_progress_bar(struct tty *tty, struct progress_bar *pb)
+{
+	if (tty_term_has(tty->term, TTYC_SPB))
+		tty_putcode_ii(tty, TTYC_SPB, pb->state, pb->progress);
+}
diff --git a/window-clock.c b/window-clock.c
index ecac43ec..27bde027 100644
--- a/window-clock.c
+++ b/window-clock.c
@@ -279,6 +279,7 @@ window_clock_draw_screen(struct window_mode_entry *wme)
 	memcpy(&gc, &grid_default_cell, sizeof gc);
 	gc.flags |= GRID_FLAG_NOPALETTE;
 	gc.bg = colour;
+	gc.fg = colour;
 	for (ptr = tim; *ptr != '\0'; ptr++) {
 		if (*ptr >= '0' && *ptr <= '9')
 			idx = *ptr - '0';
@@ -299,7 +300,7 @@ window_clock_draw_screen(struct window_mode_entry *wme)
 			for (i = 0; i < 5; i++) {
 				screen_write_cursormove(&ctx, x + i, y + j, 0);
 				if (window_clock_table[idx][j][i])
-					screen_write_putc(&ctx, &gc, ' ');
+					screen_write_putc(&ctx, &gc, '#');
 			}
 		}
 		x += 6;
diff --git a/window-copy.c b/window-copy.c
index 16626563..ac89dc56 100644
--- a/window-copy.c
+++ b/window-copy.c
@@ -463,8 +463,10 @@ window_copy_init(struct window_mode_entry *wme,
 	data->scroll_exit = args_has(args, 'e');
 	data->hide_position = args_has(args, 'H');
 
-	if (base->hyperlinks != NULL)
+	if (base->hyperlinks != NULL) {
+		hyperlinks_free(data->screen.hyperlinks);
 		data->screen.hyperlinks = hyperlinks_copy(base->hyperlinks);
+	}
 	data->screen.cx = data->cx;
 	data->screen.cy = data->cy;
 	data->mx = data->cx;
diff --git a/window.c b/window.c
index 216bf351..c9a0fbfc 100644
--- a/window.c
+++ b/window.c
@@ -406,9 +406,14 @@ window_remove_ref(struct window *w, const char *from)
 void
 window_set_name(struct window *w, const char *new_name)
 {
-	free(w->name);
-	utf8_stravis(&w->name, new_name, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
-	notify_window("window-renamed", w);
+	char	*name;
+
+	name = clean_name(new_name, "#");
+	if (name != NULL) {
+		free(w->name);
+		utf8_stravis(&w->name, new_name, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
+		notify_window("window-renamed", w);
+	}
 }
 
 void