===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/eqn_html.c,v
retrieving revision 1.10
retrieving revision 1.11
diff -c -r1.10 -r1.11
*** src/usr.bin/mandoc/eqn_html.c	2017/06/23 22:59:27	1.10
--- src/usr.bin/mandoc/eqn_html.c	2017/07/05 15:03:20	1.11
***************
*** 1,4 ****
! /*	$OpenBSD: eqn_html.c,v 1.10 2017/06/23 22:59:27 schwarze Exp $ */
  /*
   * Copyright (c) 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
   * Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
--- 1,4 ----
! /*	$OpenBSD: eqn_html.c,v 1.11 2017/07/05 15:03:20 schwarze Exp $ */
  /*
   * Copyright (c) 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
   * Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
***************
*** 49,55 ****
  	if (EQN_MATRIX == bp->type) {
  		if (NULL == bp->first)
  			goto out;
! 		if (EQN_LIST != bp->first->type) {
  			eqn_box(p, bp->first);
  			goto out;
  		}
--- 49,56 ----
  	if (EQN_MATRIX == bp->type) {
  		if (NULL == bp->first)
  			goto out;
! 		if (bp->first->type != EQN_LIST ||
! 		    bp->first->expectargs == 1) {
  			eqn_box(p, bp->first);
  			goto out;
  		}
***************
*** 129,137 ****
  
  	if (EQN_PILE == bp->type) {
  		assert(NULL == post);
! 		if (bp->first != NULL && bp->first->type == EQN_LIST)
  			post = print_otag(p, TAG_MTABLE, "");
! 	} else if (bp->type == EQN_LIST &&
  	    bp->parent && bp->parent->type == EQN_PILE) {
  		assert(NULL == post);
  		post = print_otag(p, TAG_MTR, "");
--- 130,140 ----
  
  	if (EQN_PILE == bp->type) {
  		assert(NULL == post);
! 		if (bp->first != NULL &&
! 		    bp->first->type == EQN_LIST &&
! 		    bp->first->expectargs > 1)
  			post = print_otag(p, TAG_MTABLE, "");
! 	} else if (bp->type == EQN_LIST && bp->expectargs > 1 &&
  	    bp->parent && bp->parent->type == EQN_PILE) {
  		assert(NULL == post);
  		post = print_otag(p, TAG_MTR, "");