From a618271e1287c90653cdda4442868c2d4e94de49 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicholas.marriott@gmail.com>
Date: Mon, 10 Sep 2018 07:19:17 +0100
Subject: [PATCH] Bring back window_pane_visible to stop input going to panes
 which are hidden by zoom.

---
 input-keys.c |  2 ++
 tmux.h       |  1 +
 window.c     | 19 ++++++++++++++-----
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/input-keys.c b/input-keys.c
index d3ff0dc0..f0a38c09 100644
--- a/input-keys.c
+++ b/input-keys.c
@@ -249,6 +249,8 @@ input_key_mouse(struct window_pane *wp, struct mouse_event *m)
 		return;
 	if (cmd_mouse_at(wp, m, &x, &y, 0) != 0)
 		return;
+	if (!window_pane_visible(wp))
+		return;
 
 	/* If this pane is not in button or all mode, discard motion events. */
 	if (MOUSE_DRAG(m->b) &&
diff --git a/tmux.h b/tmux.h
index 9308f6e5..6c5d4402 100644
--- a/tmux.h
+++ b/tmux.h
@@ -2177,6 +2177,7 @@ 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_visible(struct window_pane *);
 u_int		 window_pane_search(struct window_pane *, const char *);
 const char	*window_printable_flags(struct winlink *);
 struct window_pane *window_pane_find_up(struct window_pane *);
diff --git a/window.c b/window.c
index cf29ae48..aabfbdf1 100644
--- a/window.c
+++ b/window.c
@@ -1286,15 +1286,24 @@ window_pane_key(struct window_pane *wp, struct client *c, struct session *s,
 		return;
 	if (options_get_number(wp->window->options, "synchronize-panes")) {
 		TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
-			if (wp2 == wp || wp2->mode != NULL)
-				continue;
-			if (wp2->fd == -1 || wp2->flags & PANE_INPUTOFF)
-				continue;
-			input_key(wp2, key, NULL);
+			if (wp2 != wp &&
+			    wp2->mode == NULL &&
+			    wp2->fd != -1 &&
+			    (~wp2->flags & PANE_INPUTOFF) &&
+			    window_pane_visible(wp2))
+				input_key(wp2, key, NULL);
 		}
 	}
 }
 
+int
+window_pane_visible(struct window_pane *wp)
+{
+	if (~wp->window->flags & WINDOW_ZOOMED)
+		return (1);
+	return (wp == wp->window->active);
+}
+
 u_int
 window_pane_search(struct window_pane *wp, const char *searchstr)
 {