===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/server-client.c,v
retrieving revision 1.232
retrieving revision 1.233
diff -c -r1.232 -r1.233
*** src/usr.bin/tmux/server-client.c	2017/05/16 12:57:26	1.232
--- src/usr.bin/tmux/server-client.c	2017/05/29 20:37:30	1.233
***************
*** 1,4 ****
! /* $OpenBSD: server-client.c,v 1.232 2017/05/16 12:57:26 nicm Exp $ */
  
  /*
   * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
--- 1,4 ----
! /* $OpenBSD: server-client.c,v 1.233 2017/05/29 20:37:30 nicm Exp $ */
  
  /*
   * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
***************
*** 48,53 ****
--- 48,68 ----
  static void	server_client_dispatch_command(struct client *, struct imsg *);
  static void	server_client_dispatch_identify(struct client *, struct imsg *);
  static void	server_client_dispatch_shell(struct client *);
+ 
+ /* Number of attached clients. */
+ u_int
+ server_client_how_many(void)
+ {
+ 	struct client  	*c;
+ 	u_int		 n;
+ 
+ 	n = 0;
+ 	TAILQ_FOREACH(c, &clients, entry) {
+ 		if (c->session != NULL && (~c->flags & CLIENT_DETACHING))
+ 			n++;
+ 	}
+ 	return (n);
+ }
  
  /* Identify mode callback. */
  static void