===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/man_validate.c,v
retrieving revision 1.128
retrieving revision 1.129
diff -c -r1.128 -r1.129
*** src/usr.bin/mandoc/man_validate.c	2023/04/28 20:14:19	1.128
--- src/usr.bin/mandoc/man_validate.c	2023/10/24 20:30:49	1.129
***************
*** 1,6 ****
! /* $OpenBSD: man_validate.c,v 1.128 2023/04/28 20:14:19 schwarze Exp $ */
  /*
!  * Copyright (c) 2010, 2012-2020 Ingo Schwarze <schwarze@openbsd.org>
   * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   *
   * Permission to use, copy, modify, and distribute this software for any
--- 1,6 ----
! /* $OpenBSD: man_validate.c,v 1.129 2023/10/24 20:30:49 schwarze Exp $ */
  /*
!  * Copyright (c) 2010, 2012-2020, 2023 Ingo Schwarze <schwarze@openbsd.org>
   * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   *
   * Permission to use, copy, modify, and distribute this software for any
***************
*** 31,36 ****
--- 31,37 ----
  
  #include "mandoc_aux.h"
  #include "mandoc.h"
+ #include "mandoc_xr.h"
  #include "roff.h"
  #include "man.h"
  #include "libmandoc.h"
***************
*** 52,57 ****
--- 53,59 ----
  static	void	  post_EE(CHKARGS);
  static	void	  post_EX(CHKARGS);
  static	void	  post_IP(CHKARGS);
+ static	void	  post_MR(CHKARGS);
  static	void	  post_OP(CHKARGS);
  static	void	  post_SH(CHKARGS);
  static	void	  post_TH(CHKARGS);
***************
*** 98,103 ****
--- 100,106 ----
  	NULL,       /* UE */
  	post_UR,    /* MT */
  	NULL,       /* ME */
+ 	post_MR,    /* MR */
  };
  
  
***************
*** 542,547 ****
--- 545,576 ----
  	 * meta-data.
  	 */
  	roff_node_delete(man, man->last);
+ }
+ 
+ static void
+ post_MR(CHKARGS)
+ {
+ 	struct roff_node *nch;
+ 
+ 	if ((nch = n->child) == NULL) {
+ 		mandoc_msg(MANDOCERR_NM_NONAME, n->line, n->pos, "MR");
+ 		return;
+ 	}
+ 	if (nch->next == NULL) {
+ 		mandoc_msg(MANDOCERR_XR_NOSEC,
+ 		    n->line, n->pos, "MR %s", nch->string);
+ 		return;
+ 	}
+ 	if (mandoc_xr_add(nch->next->string, nch->string, nch->line, nch->pos))
+ 		mandoc_msg(MANDOCERR_XR_SELF, nch->line, nch->pos,
+ 		    "MR %s %s", nch->string, nch->next->string);
+ 	if ((nch = nch->next->next) == NULL || nch->next == NULL)
+ 		return;
+ 
+ 	mandoc_msg(MANDOCERR_ARG_EXCESS, nch->next->line, nch->next->pos,
+ 	    "MR ... %s", nch->next->string);
+ 	while (nch->next != NULL)
+ 		roff_node_delete(man, nch->next);
  }
  
  static void