===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/options.c,v
retrieving revision 1.47
retrieving revision 1.48
diff -c -r1.47 -r1.48
*** src/usr.bin/tmux/options.c	2019/05/30 20:54:03	1.47
--- src/usr.bin/tmux/options.c	2019/06/08 21:48:29	1.48
***************
*** 1,4 ****
! /* $OpenBSD: options.c,v 1.47 2019/05/30 20:54:03 nicm Exp $ */
  
  /*
   * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
--- 1,4 ----
! /* $OpenBSD: options.c,v 1.48 2019/06/08 21:48:29 nicm Exp $ */
  
  /*
   * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
***************
*** 361,367 ****
  		return (-1);
  	}
  
! 	if (OPTIONS_IS_COMMAND(o)) {
  		pr = cmd_parse_from_string(value, NULL);
  		switch (pr->status) {
  		case CMD_PARSE_EMPTY:
--- 361,367 ----
  		return (-1);
  	}
  
! 	if (OPTIONS_IS_COMMAND(o) && value != NULL) {
  		pr = cmd_parse_from_string(value, NULL);
  		switch (pr->status) {
  		case CMD_PARSE_EMPTY: