===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/roff_validate.c,v
retrieving revision 1.11
retrieving revision 1.12
diff -c -r1.11 -r1.12
*** src/usr.bin/mandoc/roff_validate.c	2018/12/04 02:53:45	1.11
--- src/usr.bin/mandoc/roff_validate.c	2018/12/04 03:28:54	1.12
***************
*** 1,4 ****
! /*	$OpenBSD: roff_validate.c,v 1.11 2018/12/04 02:53:45 schwarze Exp $ */
  /*
   * Copyright (c) 2010, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
   *
--- 1,4 ----
! /*	$OpenBSD: roff_validate.c,v 1.12 2018/12/04 03:28:54 schwarze Exp $ */
  /*
   * Copyright (c) 2010, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
   *
***************
*** 66,71 ****
--- 66,79 ----
  	if (n->child != NULL)
  		mandoc_vmsg(MANDOCERR_ARG_SKIP, man->parse,
  		    n->line, n->pos, "br %s", n->child->string);
+ 
+ 	if (n->next != NULL && n->next->type == ROFFT_TEXT &&
+ 	    *n->next->string == ' ') {
+ 		mandoc_msg(MANDOCERR_PAR_SKIP, man->parse, n->line, n->pos,
+ 		    "br before text line with leading blank");
+ 		roff_node_delete(man, n);
+ 		return;
+ 	}
  
  	if ((np = n->prev) == NULL)
  		return;