===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/session.c,v
retrieving revision 1.48
retrieving revision 1.49
diff -c -r1.48 -r1.49
*** src/usr.bin/tmux/session.c	2015/04/25 18:09:28	1.48
--- src/usr.bin/tmux/session.c	2015/05/06 08:35:39	1.49
***************
*** 1,4 ****
! /* $OpenBSD: session.c,v 1.48 2015/04/25 18:09:28 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
--- 1,4 ----
! /* $OpenBSD: session.c,v 1.49 2015/05/06 08:35:39 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
***************
*** 335,340 ****
--- 335,354 ----
  			return (1);
  	}
  	return (0);
+ }
+ 
+ /*
+  * Return 1 if a window is linked outside this session (not including session
+  * groups). The window must be in this session!
+  */
+ int
+ session_is_linked(struct session *s, struct window *w)
+ {
+ 	struct session_group	*sg;
+ 
+ 	if ((sg = session_group_find(s)) != NULL)
+ 		return (w->references != session_group_count(sg));
+ 	return (w->references != 1);
  }
  
  struct winlink *