Add "grouped sessions" which have independent name, options, current window and

so on but where the linked windows are synchronized (ie creating, killing
windows and so on are mirrored between the sessions). A grouped session may be
created by passing -t to new-session.

Had this around for a while, tested by a couple of people.

1 files changed, 16 insertions, 4 deletions

diff --git a/usr.bin/tmux/cmd-swap-window.c b/usr.bin/tmux/cmd-swap-window.c
index e51609f6e47..0c06d4d5c60 100644
--- a/usr.bin/tmux/cmd-swap-window.c
+++ b/usr.bin/tmux/cmd-swap-window.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: cmd-swap-window.c,v 1.3 2009/07/26 12:58:44 nicm Exp $ */
+/* $OpenBSD: cmd-swap-window.c,v 1.4 2009/10/10 10:02:48 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -44,6 +44,7 @@ cmd_swap_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 {
 	struct cmd_srcdst_data	*data = self->data;
 	struct session		*src, *dst;
+	struct session_group	*sg_src, *sg_dst;
 	struct winlink		*wl_src, *wl_dst;
 	struct window		*w;
 
@@ -52,6 +53,14 @@ cmd_swap_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	if ((wl_dst = cmd_find_window(ctx, data->dst, &dst)) == NULL)
 		return (-1);
 
+	sg_src = session_group_find(src);
+	sg_dst = session_group_find(dst);
+	if (src != dst &&
+	    sg_src != NULL && sg_dst != NULL && sg_src == sg_dst) {
+		ctx->error(ctx, "can't move window, sessions are grouped");
+		return (-1);
+	}
+
 	if (wl_dst->window == wl_src->window)
 		return (0);
 
@@ -64,9 +73,12 @@ cmd_swap_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		if (src != dst)
 			session_select(src, wl_src->idx);
 	}
-	server_redraw_session(src);
-	if (src != dst)
-		server_redraw_session(dst);
+	session_group_synchronize_from(src);
+	server_redraw_session_group(src);
+	if (src != dst) {
+		session_group_synchronize_from(dst);
+		server_redraw_session_group(dst);
+	}
 	recalculate_sizes();
 
 	return (0);