===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/cmd.c,v
retrieving revision 1.52
retrieving revision 1.53
diff -c -r1.52 -r1.53
*** src/usr.bin/tmux/cmd.c	2011/04/05 19:37:01	1.52
--- src/usr.bin/tmux/cmd.c	2011/04/06 21:51:31	1.53
***************
*** 1,4 ****
! /* $OpenBSD: cmd.c,v 1.52 2011/04/05 19:37:01 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
--- 1,4 ----
! /* $OpenBSD: cmd.c,v 1.53 2011/04/06 21:51:31 nicm Exp $ */
  
  /*
   * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
***************
*** 725,730 ****
--- 725,736 ----
  	if (arglen != 0 && tmparg[arglen - 1] == ':')
  		tmparg[arglen - 1] = '\0';
  
+ 	/* An empty session name is the current session. */
+ 	if (*tmparg == '\0') {
+ 		xfree (tmparg);
+ 		return (cmd_current_session(ctx, prefer_unattached));
+ 	}
+ 
  	/* Find the session, if any. */
  	s = cmd_lookup_session(tmparg, &ambiguous);
  
***************
*** 840,846 ****
  lookup_session:
  	if (ambiguous)
  		goto not_found;
! 	if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
  		goto no_session;
  
  	if (sp != NULL)
--- 846,852 ----
  lookup_session:
  	if (ambiguous)
  		goto not_found;
! 	if (*arg != '\0' && (s = cmd_lookup_session(arg, &ambiguous)) == NULL)
  		goto no_session;
  
  	if (sp != NULL)
***************
*** 981,987 ****
  lookup_session:
  	if (ambiguous)
  		goto not_found;
! 	if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
  		goto no_session;
  
  	if (sp != NULL)
--- 987,993 ----
  lookup_session:
  	if (ambiguous)
  		goto not_found;
! 	if (*arg != '\0' && (s = cmd_lookup_session(arg, &ambiguous)) == NULL)
  		goto no_session;
  
  	if (sp != NULL)