Do not forbid targets to specify non-visible panes - the checks for

visibility are better where the target is used. GitHub issue 1049.

cmd-find.c

@@ -510,7 +510,7 @@ cmd_find_get_pane(struct cmd_find_state *fs, const char *pane, int only)
 	/* Check for pane ids starting with %. */
 	if (*pane == '%') {
 		fs->wp = window_pane_find_by_id_str(pane);
-		if (fs->wp == NULL || window_pane_outside(fs->wp))
+		if (fs->wp == NULL)
 			return (-1);
 		fs->w = fs->wp->window;
 		return (cmd_find_best_session_with_window(fs));
@@ -547,7 +547,7 @@ cmd_find_get_pane_with_session(struct cmd_find_state *fs, const char *pane)
 	/* Check for pane ids starting with %. */
 	if (*pane == '%') {
 		fs->wp = window_pane_find_by_id_str(pane);
-		if (fs->wp == NULL || window_pane_outside(fs->wp))
+		if (fs->wp == NULL)
 			return (-1);
 		fs->w = fs->wp->window;
 		return (cmd_find_best_winlink_with_window(fs));
@@ -579,7 +579,7 @@ cmd_find_get_pane_with_window(struct cmd_find_state *fs, const char *pane)
 	/* Check for pane ids starting with %. */
 	if (*pane == '%') {
 		fs->wp = window_pane_find_by_id_str(pane);
-		if (fs->wp == NULL || window_pane_outside(fs->wp))
+		if (fs->wp == NULL)
 			return (-1);
 		if (fs->wp->window != fs->w)
 			return (-1);
@@ -591,27 +591,27 @@ cmd_find_get_pane_with_window(struct cmd_find_state *fs, const char *pane)
 		if (fs->w->last == NULL)
 			return (-1);
 		fs->wp = fs->w->last;
-		if (fs->wp == NULL || window_pane_outside(fs->wp))
+		if (fs->wp == NULL)
 			return (-1);
 		return (0);
 	} else if (strcmp(pane, "{up-of}") == 0) {
 		fs->wp = window_pane_find_up(fs->w->active);
-		if (fs->wp == NULL || window_pane_outside(fs->wp))
+		if (fs->wp == NULL)
 			return (-1);
 		return (0);
 	} else if (strcmp(pane, "{down-of}") == 0) {
 		fs->wp = window_pane_find_down(fs->w->active);
-		if (fs->wp == NULL || window_pane_outside(fs->wp))
+		if (fs->wp == NULL)
 			return (-1);
 		return (0);
 	} else if (strcmp(pane, "{left-of}") == 0) {
 		fs->wp = window_pane_find_left(fs->w->active);
-		if (fs->wp == NULL || window_pane_outside(fs->wp))
+		if (fs->wp == NULL)
 			return (-1);
 		return (0);
 	} else if (strcmp(pane, "{right-of}") == 0) {
 		fs->wp = window_pane_find_right(fs->w->active);
-		if (fs->wp == NULL || window_pane_outside(fs->wp))
+		if (fs->wp == NULL)
 			return (-1);
 		return (0);
 	}
@@ -627,7 +627,7 @@ cmd_find_get_pane_with_window(struct cmd_find_state *fs, const char *pane)
 			fs->wp = window_pane_next_by_number(fs->w, wp, n);
 		else
 			fs->wp = window_pane_previous_by_number(fs->w, wp, n);
-		if (fs->wp != NULL && !window_pane_outside(fs->wp))
+		if (fs->wp != NULL)
 			return (0);
 	}
 
@@ -635,13 +635,13 @@ cmd_find_get_pane_with_window(struct cmd_find_state *fs, const char *pane)
 	idx = strtonum(pane, 0, INT_MAX, &errstr);
 	if (errstr == NULL) {
 		fs->wp = window_pane_at_index(fs->w, idx);
-		if (fs->wp != NULL && !window_pane_outside(fs->wp))
+		if (fs->wp != NULL)
 			return (0);
 	}
 
 	/* Try as a description. */
 	fs->wp = window_find_string(fs->w, pane);
-	if (fs->wp != NULL && !window_pane_outside(fs->wp))
+	if (fs->wp != NULL)
 		return (0);
 
 	return (-1);
@@ -689,9 +689,7 @@ cmd_find_valid_state(struct cmd_find_state *fs)
 	if (fs->w != fs->wl->window)
 		return (0);
 
-	if (!window_has_pane(fs->w, fs->wp))
-		return (0);
-	return (!window_pane_outside(fs->wp));
+	return (window_has_pane(fs->w, fs->wp));
 }
 
 /* Copy a state. */
@@ -818,10 +816,6 @@ cmd_find_from_pane(struct cmd_find_state *fs, struct window_pane *wp)
 {
 	if (cmd_find_from_window(fs, wp->window) != 0)
 		return (-1);
-	if (window_pane_outside(wp)) {
-		cmd_find_clear_state(fs, 0);
-		return (-1);
-	}
 	fs->wp = wp;
 
 	cmd_find_log_state(__func__, fs);
@@ -1016,7 +1010,7 @@ cmd_find_target(struct cmd_find_state *fs, struct cmdq_item *item,
 		switch (type) {
 		case CMD_FIND_PANE:
 			fs->wp = cmd_mouse_pane(m, &fs->s, &fs->wl);
-			if (fs->wp != NULL && !window_pane_outside(fs->wp))
+			if (fs->wp != NULL)
 				fs->w = fs->wl->window;
 			break;
 		case CMD_FIND_WINDOW:

resize.c

@@ -159,6 +159,8 @@ recalculate_sizes(void)
 			if (w->active == wp)
 			       break;
 		}
+		if (w->active == w->last)
+			w->last = NULL;
 
 		server_redraw_window(w);
 		notify_window("window-layout-changed", w);

tmux.h

@@ -2162,7 +2162,6 @@ int		 window_pane_set_mode(struct window_pane *,
 void		 window_pane_reset_mode(struct window_pane *);
 void		 window_pane_key(struct window_pane *, struct client *,
 		     struct session *, key_code, struct mouse_event *);
-int		 window_pane_outside(struct window_pane *);
 int		 window_pane_visible(struct window_pane *);
 u_int		 window_pane_search(struct window_pane *, const char *);
 const char	*window_printable_flags(struct winlink *);

window.c

@@ -634,6 +634,8 @@ window_add_pane(struct window *w, struct window_pane *other, int before,
 void
 window_lost_pane(struct window *w, struct window_pane *wp)
 {
+	log_debug("%s: @%u pane %%%u", __func__, w->id, wp->id);
+
 	if (wp == marked_pane.wp)
 		server_clear_marked();
 
@@ -1279,23 +1281,18 @@ window_pane_key(struct window_pane *wp, struct client *c, struct session *s,
 }
 
 int
-window_pane_outside(struct window_pane *wp)
+window_pane_visible(struct window_pane *wp)
 {
 	struct window	*w = wp->window;
 
-	if (wp->xoff >= w->sx || wp->yoff >= w->sy)
-		return (1);
-	if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
-		return (1);
-	return (0);
-}
-
-int
-window_pane_visible(struct window_pane *wp)
-{
 	if (wp->layout_cell == NULL)
 		return (0);
-	return (!window_pane_outside(wp));
+
+	if (wp->xoff >= w->sx || wp->yoff >= w->sy)
+		return (0);
+	if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
+		return (0);
+	return (1);
 }
 
 u_int