===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/session.c,v
retrieving revision 1.20
retrieving revision 1.21
diff -c -r1.20 -r1.21
*** src/usr.bin/tmux/session.c	2010/09/08 22:02:28	1.20
--- src/usr.bin/tmux/session.c	2010/12/20 00:03:55	1.21
***************
*** 1,4 ****
! /* $OpenBSD: session.c,v 1.20 2010/09/08 22:02:28 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
--- 1,4 ----
! /* $OpenBSD: session.c,v 1.21 2010/12/20 00:03:55 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
***************
*** 34,39 ****
--- 34,51 ----
  
  struct winlink *session_next_alert(struct winlink *);
  struct winlink *session_previous_alert(struct winlink *);
+ 
+ /*
+  * Find if session is still alive. This is true if it is still on the global
+  * sessions list.
+  */
+ int
+ session_alive(struct session *s)
+ {
+ 	u_int	idx;
+ 
+ 	return (session_index(s, &idx) == 0);
+ }
  
  /* Find session by name. */
  struct session *