Bring some new formats from the floating panes work: pane_zoomed_flag,

pane_flags, pane_floating_flag. By Michael Grant.

cmd-select-layout.c

@@ -90,7 +90,7 @@ cmd_select_layout_exec(struct cmd *self, struct cmdq_item *item)
 		previous = 1;
 
 	oldlayout = w->old_layout;
-	w->old_layout = layout_dump(w->layout_root);
+	w->old_layout = layout_dump(w, w->layout_root);
 
 	if (next || previous) {
 		if (next)

format.c

@@ -811,8 +811,8 @@ format_cb_window_layout(struct format_tree *ft)
 		return (NULL);
 
 	if (w->saved_layout_root != NULL)
-		return (layout_dump(w->saved_layout_root));
-	return (layout_dump(w->layout_root));
+		return (layout_dump(w, w->saved_layout_root));
+	return (layout_dump(w, w->layout_root));
 }
 
 /* Callback for window_visible_layout. */
@@ -824,7 +824,7 @@ format_cb_window_visible_layout(struct format_tree *ft)
 	if (w == NULL)
 		return (NULL);
 
-	return (layout_dump(w->layout_root));
+	return (layout_dump(w, w->layout_root));
 }
 
 /* Callback for pane_start_command. */
@@ -990,6 +990,29 @@ format_cb_pane_fg(struct format_tree *ft)
 	return (xstrdup(colour_tostring(gc.fg)));
 }
 
+/* Callback for pane_flags. */
+static void *
+format_cb_pane_flags(struct format_tree *ft)
+{
+	if (ft->wp != NULL)
+		return (xstrdup(window_pane_printable_flags(ft->wp)));
+	return (NULL);
+}
+
+/* Callback for pane_floating_flag. */
+static void *
+format_cb_pane_floating_flag(struct format_tree *ft)
+{
+	struct window_pane	*wp = ft->wp;
+
+	if (wp != NULL) {
+		if (wp->flags & PANE_FLOATING)
+			return (xstrdup("1"));
+		return (xstrdup("0"));
+	}
+	return (NULL);
+}
+
 /* Callback for pane_bg. */
 static void *
 format_cb_pane_bg(struct format_tree *ft)
@@ -2351,6 +2374,20 @@ format_cb_pane_width(struct format_tree *ft)
 	return (NULL);
 }
 
+/* Callback for pane_zoomed_flag. */
+static void *
+format_cb_pane_zoomed_flag(struct format_tree *ft)
+{
+	struct window_pane	*wp = ft->wp;
+
+	if (wp != NULL) {
+		if (wp->flags & PANE_ZOOMED)
+			return (xstrdup("1"));
+		return (xstrdup("0"));
+	}
+	return (NULL);
+}
+
 /* Callback for scroll_region_lower. */
 static void *
 format_cb_scroll_region_lower(struct format_tree *ft)
@@ -3326,6 +3363,12 @@ static const struct format_table_entry format_table[] = {
 	{ "pane_fg", FORMAT_TABLE_STRING,
 	  format_cb_pane_fg
 	},
+	{ "pane_flags", FORMAT_TABLE_STRING,
+	  format_cb_pane_flags
+	},
+	{ "pane_floating_flag", FORMAT_TABLE_STRING,
+	  format_cb_pane_floating_flag
+	},
 	{ "pane_format", FORMAT_TABLE_STRING,
 	  format_cb_pane_format
 	},
@@ -3413,6 +3456,9 @@ static const struct format_table_entry format_table[] = {
 	{ "pane_width", FORMAT_TABLE_STRING,
 	  format_cb_pane_width
 	},
+	{ "pane_zoomed_flag", FORMAT_TABLE_STRING,
+	  format_cb_pane_zoomed_flag
+	},
 	{ "pid", FORMAT_TABLE_STRING,
 	  format_cb_pid
 	},

layout-custom.c

@@ -58,7 +58,7 @@ layout_checksum(const char *layout)
 
 /* Dump layout as a string. */
 char *
-layout_dump(struct layout_cell *root)
+layout_dump(__unused struct window *w, struct layout_cell *root)
 {
 	char	layout[8192], *out;
 

tmux.1

@@ -6369,6 +6369,8 @@ The following variables are available, where appropriate:
 .It Li "pane_dead_status" Ta "" Ta "Exit status of process in dead pane"
 .It Li "pane_dead_time" Ta "" Ta "Exit time of process in dead pane"
 .It Li "pane_fg" Ta "" Ta "Pane foreground colour"
+.It Li "pane_flags" Ta "" Ta "Pane flags"
+.It Li "pane_floating_flag" Ta "" Ta "1 if pane is floating"
 .It Li "pane_format" Ta "" Ta "1 if format is for a pane"
 .It Li "pane_height" Ta "" Ta "Height of pane"
 .It Li "pane_id" Ta "#D" Ta "Unique pane ID"
@@ -6398,6 +6400,7 @@ The following variables are available, where appropriate:
 .It Li "pane_tty" Ta "" Ta "Pseudo terminal of pane"
 .It Li "pane_unseen_changes" Ta "" Ta "1 if there were changes in pane while in mode"
 .It Li "pane_width" Ta "" Ta "Width of pane"
+.It Li "pane_floating_flag" Ta "" Ta "1 if pane is floating"
 .It Li "pid" Ta "" Ta "Server PID"
 .It Li "prev_window_active" Ta "" Ta "1 if previous window in W: loop is active"
 .It Li "prev_window_index" Ta "" Ta "Index of previous window in W: loop"

tmux.h

@@ -1218,7 +1218,7 @@ struct window_pane {
 #define PANE_FOCUSED 0x4
 #define PANE_VISITED 0x8
 #define PANE_ZOOMED 0x10
-/* 0x20 unused */
+#define PANE_FLOATING 0x20
 #define PANE_INPUTOFF 0x40
 #define PANE_CHANGED 0x80
 #define PANE_EXITED 0x100
@@ -3372,6 +3372,7 @@ int		 window_pane_exited(struct window_pane *);
 u_int		 window_pane_search(struct window_pane *, const char *, int,
 		     int);
 const char	*window_printable_flags(struct winlink *, int);
+const char      *window_pane_printable_flags(struct window_pane *);
 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 *);
@@ -3439,7 +3440,7 @@ int		 layout_spread_cell(struct window *, struct layout_cell *);
 void		 layout_spread_out(struct window_pane *);
 
 /* layout-custom.c */
-char		*layout_dump(struct layout_cell *);
+char		*layout_dump(struct window *, struct layout_cell *);
 int		 layout_parse(struct window *, const char *, char **);
 
 /* layout-set.c */

window.c

@@ -882,9 +882,8 @@ window_printable_flags(struct winlink *wl, int escape)
 {
 	struct session	*s = wl->session;
 	static char	 flags[32];
-	int		 pos;
+	u_int		 pos = 0;
 
-	pos = 0;
 	if (wl->flags & WINLINK_ACTIVITY) {
 		flags[pos++] = '#';
 		if (escape)
@@ -906,6 +905,25 @@ window_printable_flags(struct winlink *wl, int escape)
 	return (flags);
 }
 
+const char *
+window_pane_printable_flags(struct window_pane *wp)
+{
+	struct window	*w = wp->window;
+	static char	 flags[32];
+	u_int		 pos = 0;
+
+	if (wp == w->active)
+		flags[pos++] = '*';
+	if (wp == TAILQ_FIRST(&w->last_panes))
+		flags[pos++] = '-';
+	if (wp->flags & PANE_ZOOMED)
+		flags[pos++] = 'Z';
+	if (wp->flags & PANE_FLOATING)
+		flags[pos++] = 'F';
+	flags[pos] = '\0';
+	return (flags);
+}
+
 struct window_pane *
 window_pane_find_by_id_str(const char *s)
 {