Add a -O flag to display-menu to change the mouse behaviour and not

close the menu when the mouse is released, from teo_paul1 at yahoo dot
com.

cmd-display-menu.c

@@ -36,8 +36,8 @@ const struct cmd_entry cmd_display_menu_entry = {
 	.name = "display-menu",
 	.alias = "menu",
 
-	.args = { "c:t:T:x:y:", 1, -1 },
-	.usage = "[-c target-client] " CMD_TARGET_PANE_USAGE " [-T title] "
+	.args = { "c:t:OT:x:y:", 1, -1 },
+	.usage = "[-O] [-c target-client] " CMD_TARGET_PANE_USAGE " [-T title] "
 		 "[-x position] [-y position] name key command ...",
 
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -229,6 +229,8 @@ cmd_display_menu_exec(struct cmd *self, struct cmdq_item *item)
 	cmd_display_menu_get_position(tc, item, args, &px, &py, menu->width + 4,
 	    menu->count + 2);
 
+	if (args_has(args, 'O'))
+		flags |= MENU_STAYOPEN;
 	if (!event->m.valid)
 		flags |= MENU_NOMOUSE;
 	if (menu_display(menu, flags, item, px, py, tc, target, NULL,

menu.c

@@ -203,16 +203,28 @@ menu_key_cb(struct client *c, struct key_event *event)
 		    m->x > md->px + 4 + menu->width ||
 		    m->y < md->py + 1 ||
 		    m->y > md->py + 1 + count - 1) {
+			if (~md->flags & MENU_STAYOPEN) {
 				if (MOUSE_RELEASE(m->b))
 					return (1);
+			} else {
+				if (!MOUSE_RELEASE(m->b) &&
+				    MOUSE_WHEEL(m->b) == 0 &&
+				    !MOUSE_DRAG(m->b))
+					return (1);
+			}
 			if (md->choice != -1) {
 				md->choice = -1;
 				c->flags |= CLIENT_REDRAWOVERLAY;
 			}
 			return (0);
 		}
+		if (~md->flags & MENU_STAYOPEN) {
 			if (MOUSE_RELEASE(m->b))
 				goto chosen;
+		} else {
+			if (MOUSE_WHEEL(m->b) == 0 && !MOUSE_DRAG(m->b))
+				goto chosen;
+		}
 		md->choice = m->y - (md->py + 1);
 		if (md->choice != old)
 			c->flags |= CLIENT_REDRAWOVERLAY;
@@ -303,6 +315,8 @@ chosen:
 	if (md->choice == -1)
 		return (1);
 	item = &menu->items[md->choice];
+	if ((md->flags & MENU_STAYOPEN) && item->name == NULL)
+		return (0);
 	if (item->name == NULL || *item->name == '-')
 		return (1);
 	if (md->cb != NULL) {

server-client.c

@@ -1693,8 +1693,8 @@ server_client_reset_state(struct client *c)
 	 * mode.
 	 */
 	if (options_get_number(oo, "mouse")) {
-		mode &= ~ALL_MOUSE_MODES;
 		if (c->overlay_draw == NULL) {
+			mode &= ~ALL_MOUSE_MODES;
 			TAILQ_FOREACH(loop, &w->panes, entry) {
 				if (loop->screen->mode & MODE_MOUSE_ALL)
 					mode |= MODE_MOUSE_ALL;

tmux.1

@@ -5331,6 +5331,7 @@ option.
 This command works only from inside
 .Nm .
 .It Xo Ic display-menu
+.Op Fl O
 .Op Fl c Ar target-client
 .Op Fl t Ar target-pane
 .Op Fl T Ar title
@@ -5382,8 +5383,14 @@ Both may be a row or column number, or one of the following special values:
 Each menu consists of items followed by a key shortcut shown in brackets.
 If the menu is too large to fit on the terminal, it is not displayed.
 Pressing the key shortcut chooses the corresponding item.
-If the mouse is enabled and the menu is opened from a mouse key binding, releasing
-the mouse button with an item selected will choose that item.
+If the mouse is enabled and the menu is opened from a mouse key binding,
+releasing the mouse button with an item selected chooses that item and
+releasing the mouse button without an item selected closes the menu.
+.Fl O
+changes this behaviour so that the menu does not close when the mouse button is
+released without an item selected the menu is not closed and a mouse button
+must be clicked to choose an item.
+.Pp
 The following keys are also available:
 .Bl -column "Key" "Function" -offset indent
 .It Sy "Key" Ta Sy "Function"

tmux.h

@@ -2978,6 +2978,7 @@ __dead void printflike(1, 2) fatalx(const char *, ...);
 /* menu.c */
 #define MENU_NOMOUSE 0x1
 #define MENU_TAB 0x2
+#define MENU_STAYOPEN 0x4
 struct menu	*menu_create(const char *);
 void		 menu_add_items(struct menu *, const struct menu_item *,
 		    struct cmdq_item *, struct client *,