From b4e74f4310d90affd4e1a4a7328082ac4beb5461 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicholas.marriott@gmail.com>
Date: Tue, 25 Sep 2018 09:54:47 +0100
Subject: [PATCH] Add a B flag to mark windows bigger than the client.

---
 cmd-select-pane.c | 7 ++++---
 tmux.1            | 1 +
 tmux.h            | 4 ++--
 tty.c             | 3 +--
 window.c          | 4 +++-
 5 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/cmd-select-pane.c b/cmd-select-pane.c
index 5cec82f2..34b0a3c3 100644
--- a/cmd-select-pane.c
+++ b/cmd-select-pane.c
@@ -58,6 +58,7 @@ static void
 cmd_select_pane_redraw(struct window *w)
 {
 	struct client	*c;
+	struct window	*loop;
 
 	/*
 	 * Redraw entire window if it is bigger than the client (the
@@ -67,15 +68,15 @@ cmd_select_pane_redraw(struct window *w)
 	TAILQ_FOREACH(c, &clients, entry) {
 		if (c->session == NULL)
 			continue;
-		if (c->session->curw->window == w && tty_window_bigger(&c->tty))
+		loop = c->session->curw->window;
+		if (loop == w && tty_window_bigger(&c->tty, w))
 			server_redraw_client(c);
 		else {
-			if (c->session->curw->window == w)
+			if (loop == w)
 				c->flags |= CLIENT_REDRAWBORDERS;
 			if (session_has(c->session, w))
 				c->flags |= CLIENT_REDRAWSTATUS;
 		}
-
 	}
 }
 
diff --git a/tmux.1 b/tmux.1
index a85ff7a5..15904010 100644
--- a/tmux.1
+++ b/tmux.1
@@ -4095,6 +4095,7 @@ The flag is one of the following symbols appended to the window name:
 .It Li "#" Ta "Window activity is monitored and activity has been detected."
 .It Li "\&!" Ta "Window bells are monitored and a bell has occurred in the window."
 .It Li "~" Ta "The window has been silent for the monitor-silence interval."
+.It Li "+" Ta "The window is larger than is visible."
 .It Li "M" Ta "The window contains the marked pane."
 .It Li "Z" Ta "The window's active pane is zoomed."
 .El
diff --git a/tmux.h b/tmux.h
index 7378927a..4ae6d6ad 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1669,7 +1669,7 @@ struct environ *environ_for_session(struct session *, int);
 
 /* tty.c */
 void	tty_create_log(void);
-int	tty_window_bigger(struct tty *);
+int	tty_window_bigger(struct tty *, struct window *);
 int	tty_window_offset(struct tty *, u_int *, u_int *, u_int *, u_int *);
 void	tty_update_window_offset(struct window *);
 void	tty_update_client_offset(struct client *);
@@ -2184,7 +2184,7 @@ void		 window_pane_key(struct window_pane *, struct client *,
 		     struct session *, key_code, struct mouse_event *);
 int		 window_pane_visible(struct window_pane *);
 u_int		 window_pane_search(struct window_pane *, const char *);
-const char	*window_printable_flags(struct winlink *);
+const char	*window_printable_flags(struct winlink *, struct client *);
 struct window_pane *window_pane_find_up(struct window_pane *);
 struct window_pane *window_pane_find_down(struct window_pane *);
 struct window_pane *window_pane_find_left(struct window_pane *);
diff --git a/tty.c b/tty.c
index bf4c1424..f3cbbf23 100644
--- a/tty.c
+++ b/tty.c
@@ -701,11 +701,10 @@ tty_repeat_space(struct tty *tty, u_int n)
 
 /* Is this window bigger than the terminal? */
 int
-tty_window_bigger(struct tty *tty)
+tty_window_bigger(struct tty *tty, struct window *w)
 {
 	struct client	*c = tty->client;
 	struct session	*s = c->session;
-	struct window	*w = s->curw->window;
 
 	return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy);
 }
diff --git a/window.c b/window.c
index 7d3b0748..3704a633 100644
--- a/window.c
+++ b/window.c
@@ -739,7 +739,7 @@ window_destroy_panes(struct window *w)
 }
 
 const char *
-window_printable_flags(struct winlink *wl)
+window_printable_flags(struct winlink *wl, struct client *c)
 {
 	struct session	*s = wl->session;
 	static char	 flags[32];
@@ -760,6 +760,8 @@ window_printable_flags(struct winlink *wl)
 		flags[pos++] = 'M';
 	if (wl->window->flags & WINDOW_ZOOMED)
 		flags[pos++] = 'Z';
+	if (c != NULL && tty_window_bigger(&c->tty, wl->window))
+		flags[pos++] = 'B';
 	flags[pos] = '\0';
 	return (flags);
 }