Indicate the marked pane in choose mode in reverse and add key to set

and clear it (m and M) and a key to jump to the starting pane (H).

mode-tree.c

@@ -256,8 +256,8 @@ mode_tree_expand_current(struct mode_tree_data *mtd)
 	}
 }
 
-void
+static int
-mode_tree_set_current(struct mode_tree_data *mtd, uint64_t tag)
+mode_tree_get_tag(struct mode_tree_data *mtd, uint64_t tag, u_int *found)
 {
 	u_int	i;
 
@@ -266,15 +266,41 @@ mode_tree_set_current(struct mode_tree_data *mtd, uint64_t tag)
 			break;
 	}
 	if (i != mtd->line_size) {
-		mtd->current = i;
+		*found = i;
+		return (1);
+	}
+	return (0);
+}
+
+void
+mode_tree_expand(struct mode_tree_data *mtd, uint64_t tag)
+{
+	u_int	found;
+
+	if (!mode_tree_get_tag(mtd, tag, &found))
+	    return;
+	if (!mtd->line_list[found].item->expanded) {
+		mtd->line_list[found].item->expanded = 1;
+		mode_tree_build(mtd);
+	}
+}
+
+int
+mode_tree_set_current(struct mode_tree_data *mtd, uint64_t tag)
+{
+	u_int	found;
+
+	if (mode_tree_get_tag(mtd, tag, &found)) {
+		mtd->current = found;
 		if (mtd->current > mtd->height - 1)
 			mtd->offset = mtd->current - mtd->height + 1;
 		else
 			mtd->offset = 0;
-	} else {
+		return (1);
-		mtd->current = 0;
-		mtd->offset = 0;
 	}
+	mtd->current = 0;
+	mtd->offset = 0;
+	return (0);
 }
 
 u_int

tmux.h

@@ -2621,7 +2621,8 @@ typedef void (*mode_tree_each_cb)(void *, void *, struct client *, key_code);
 u_int	 mode_tree_count_tagged(struct mode_tree_data *);
 void	*mode_tree_get_current(struct mode_tree_data *);
 void	 mode_tree_expand_current(struct mode_tree_data *);
-void	 mode_tree_set_current(struct mode_tree_data *, uint64_t);
+void	 mode_tree_expand(struct mode_tree_data *, uint64_t);
+int	 mode_tree_set_current(struct mode_tree_data *, uint64_t);
 void	 mode_tree_each_tagged(struct mode_tree_data *, mode_tree_each_cb,
 	     struct client *, key_code, int);
 void	 mode_tree_down(struct mode_tree_data *, int);

window-tree.c

@@ -37,9 +37,11 @@ static void		 window_tree_key(struct window_mode_entry *,
 
 #define WINDOW_TREE_DEFAULT_FORMAT \
 	"#{?pane_format," \
-		"#{pane_current_command} \"#{pane_title}\"" \
+		"#{?pane_marked,#[reverse],}" \
+		"#{pane_current_command}#{?pane_active,*,}#{?pane_marked,M,} \"#{pane_title}\"" \
 	"," \
 		"#{?window_format," \
+			"#{?window_marked_flag,#[reverse],}" \
 			"#{window_name}#{window_flags} " \
 			"(#{window_panes} panes)" \
 			"#{?#{==:#{window_panes},1}, \"#{pane_title}\",}" \
@@ -56,6 +58,7 @@ static void		 window_tree_key(struct window_mode_entry *,
 static const struct menu_item window_tree_menu_items[] = {
 	{ "Select", '\r', NULL },
 	{ "Expand", KEYC_RIGHT, NULL },
+	{ "Mark", 'm', NULL },
 	{ "", KEYC_NONE, NULL },
 	{ "Tag", 't', NULL },
 	{ "Tag All", '\024', NULL },
@@ -1170,7 +1173,7 @@ window_tree_key(struct window_mode_entry *wme, struct client *c,
 	struct window_tree_modedata	*data = wme->data;
 	struct window_tree_itemdata	*item, *new_item;
 	char				*name, *prompt = NULL;
-	struct cmd_find_state		 fs;
+	struct cmd_find_state		 fs, *fsp = &data->fs;
 	int				 finished;
 	u_int				 tagged, x, y, idx;
 	struct session			*ns;
@@ -1192,6 +1195,21 @@ window_tree_key(struct window_mode_entry *wme, struct client *c,
 	case '>':
 		data->offset++;
 		break;
+	case 'H':
+		mode_tree_expand(data->data, (uint64_t)fsp->s);
+		mode_tree_expand(data->data, (uint64_t)fsp->wl);
+		if (!mode_tree_set_current(data->data, (uint64_t)wme->wp))
+			mode_tree_set_current(data->data, (uint64_t)fsp->wl);
+		break;
+	case 'm':
+		window_tree_pull_item(item, &ns, &nwl, &nwp);
+		server_set_marked(ns, nwl, nwp);
+		mode_tree_build(data->data);
+		break;
+	case 'M':
+		server_clear_marked();
+		mode_tree_build(data->data);
+		break;
 	case 'x':
 		window_tree_pull_item(item, &ns, &nwl, &nwp);
 		switch (item->type) {