From 3af09ac94697097d5a8cd45b82638ed9c3e941cc Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicm@openbsd.org>
Date: Fri, 9 Oct 2009 07:27:00 +0000
Subject: [PATCH] Add a simple synchronize-panes window option: when set, all
 input to any pane that is part of the window is also sent to all other panes
 in the same window. Suggested by several, most recently Tomasz Pajor.

---
 cmd-set-window-option.c |  1 +
 tmux.1                  |  5 +++++
 tmux.c                  |  1 +
 window.c                | 16 ++++++++++++++--
 4 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/cmd-set-window-option.c b/cmd-set-window-option.c
index 76d00e19..1ac62147 100644
--- a/cmd-set-window-option.c
+++ b/cmd-set-window-option.c
@@ -64,6 +64,7 @@ const struct set_option_entry set_window_option_table[] = {
 	{ "monitor-activity", SET_OPTION_FLAG, 0, 0, NULL },
 	{ "monitor-content", SET_OPTION_STRING, 0, 0, NULL },
 	{ "remain-on-exit", SET_OPTION_FLAG, 0, 0, NULL },
+	{ "synchronize-panes", SET_OPTION_FLAG, 0, 0, NULL },
 	{ "utf8", SET_OPTION_FLAG, 0, 0, NULL },
 	{ "window-status-attr", SET_OPTION_ATTRIBUTES, 0, 0, NULL },
 	{ "window-status-bg", SET_OPTION_COLOUR, 0, 0, NULL },
diff --git a/tmux.1 b/tmux.1
index 938dba43..397ff83b 100644
--- a/tmux.1
+++ b/tmux.1
@@ -1662,6 +1662,11 @@ The window may be reactivated with the
 .Ic respawn-window
 command.
 .Pp
+.It Xo Ic synchronize-panes
+.Op Ic on | off
+.Xc
+Duplicate input to any pane to all other panes in the same window, except
+for panes that are not in output mode.
 .It Xo Ic utf8
 .Op Ic on | off
 .Xc
diff --git a/tmux.c b/tmux.c
index 5673282f..eed7e9e1 100644
--- a/tmux.c
+++ b/tmux.c
@@ -441,6 +441,7 @@ main(int argc, char **argv)
 	options_set_number(wo, "window-status-fg", 8);
 	options_set_number(wo, "xterm-keys", 0);
  	options_set_number(wo, "remain-on-exit", 0);
+	options_set_number(wo, "synchronize-panes", 0);
 
  	if (flags & IDENTIFY_UTF8) {
 		options_set_number(so, "status-utf8", 1);
diff --git a/window.c b/window.c
index b663acf3..9d2f3975 100644
--- a/window.c
+++ b/window.c
@@ -610,14 +610,26 @@ window_pane_parse(struct window_pane *wp)
 void
 window_pane_key(struct window_pane *wp, struct client *c, int key)
 {
+	struct window_pane	*wp2;
+
 	if (wp->fd == -1 || !window_pane_visible(wp))
 		return;
 
 	if (wp->mode != NULL) {
 		if (wp->mode->key != NULL)
 			wp->mode->key(wp, c, key);
-	} else
-		input_key(wp, key);
+		return;
+	} 
+
+	input_key(wp, key);
+	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 && window_pane_visible(wp2))
+				input_key(wp2, key);
+		}
+	}
 }
 
 void