===================================================================
RCS file: /cvs/mandoc/mdoc_validate.c,v
retrieving revision 1.325
retrieving revision 1.329
diff -u -p -r1.325 -r1.329
--- mandoc/mdoc_validate.c	2017/05/05 13:17:55	1.325
+++ mandoc/mdoc_validate.c	2017/05/31 15:31:00	1.329
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_validate.c,v 1.325 2017/05/05 13:17:55 schwarze Exp $ */
+/*	$Id: mdoc_validate.c,v 1.329 2017/05/31 15:31:00 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010-2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -53,6 +53,7 @@ typedef	void	(*v_post)(POST_ARGS);
 
 static	int	 build_list(struct roff_man *, int);
 static	void	 check_text(struct roff_man *, int, int, char *);
+static	void	 check_bsd(struct roff_man *, int, int, char *);
 static	void	 check_argv(struct roff_man *,
 			struct roff_node *, struct mdoc_argv *);
 static	void	 check_args(struct roff_man *, struct roff_node *);
@@ -105,6 +106,7 @@ static	void	 post_sh_authors(POST_ARGS);
 static	void	 post_sm(POST_ARGS);
 static	void	 post_st(POST_ARGS);
 static	void	 post_std(POST_ARGS);
+static	void	 post_useless(POST_ARGS);
 static	void	 post_xr(POST_ARGS);
 static	void	 post_xx(POST_ARGS);
 
@@ -201,7 +203,7 @@ static	const v_post __mdoc_valids[MDOC_MAX - MDOC_Dd] 
 	post_sm,	/* Sm */
 	post_hyph,	/* Sx */
 	NULL,		/* Sy */
-	NULL,		/* Tn */
+	post_useless,	/* Tn */
 	post_xx,	/* Ux */
 	NULL,		/* Xc */
 	NULL,		/* Xo */
@@ -227,7 +229,6 @@ static	const v_post __mdoc_valids[MDOC_MAX - MDOC_Dd] 
 	post_en,	/* En */
 	post_xx,	/* Dx */
 	NULL,		/* %Q */
-	post_par,	/* sp */
 	NULL,		/* %U */
 	NULL,		/* Ta */
 };
@@ -302,6 +303,10 @@ mdoc_node_validate(struct roff_man *mdoc)
 		if (n->sec != SEC_SYNOPSIS ||
 		    (n->parent->tok != MDOC_Cd && n->parent->tok != MDOC_Fd))
 			check_text(mdoc, n->line, n->pos, n->string);
+		if (n->parent->tok == MDOC_Sh ||
+		    n->parent->tok == MDOC_Ss ||
+		    n->parent->tok == MDOC_It)
+			check_bsd(mdoc, n->line, n->pos, n->string);
 		break;
 	case ROFFT_EQN:
 	case ROFFT_TBL:
@@ -328,6 +333,7 @@ mdoc_node_validate(struct roff_man *mdoc)
 		if (n->tok < ROFF_MAX) {
 			switch(n->tok) {
 			case ROFF_br:
+			case ROFF_sp:
 				post_par(mdoc);
 				break;
 			default:
@@ -383,6 +389,25 @@ check_text(struct roff_man *mdoc, int ln, int pos, cha
 }
 
 static void
+check_bsd(struct roff_man *mdoc, int ln, int pos, char *p)
+{
+	const char	*cp;
+
+	if ((cp = strstr(p, "OpenBSD")) != NULL)
+		mandoc_msg(MANDOCERR_BX, mdoc->parse,
+		    ln, pos + (cp - p), "Ox");
+	if ((cp = strstr(p, "NetBSD")) != NULL)
+		mandoc_msg(MANDOCERR_BX, mdoc->parse,
+		    ln, pos + (cp - p), "Nx");
+	if ((cp = strstr(p, "FreeBSD")) != NULL)
+		mandoc_msg(MANDOCERR_BX, mdoc->parse,
+		    ln, pos + (cp - p), "Fx");
+	if ((cp = strstr(p, "DragonFly")) != NULL)
+		mandoc_msg(MANDOCERR_BX, mdoc->parse,
+		    ln, pos + (cp - p), "Dx");
+}
+
+static void
 post_bl_norm(POST_ARGS)
 {
 	struct roff_node *n;
@@ -671,6 +696,7 @@ post_eoln(POST_ARGS)
 {
 	struct roff_node	*n;
 
+	post_useless(mdoc);
 	n = mdoc->last;
 	if (n->child != NULL)
 		mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse, n->line,
@@ -866,6 +892,16 @@ post_obsolete(POST_ARGS)
 		    n->line, n->pos, roff_name[n->tok]);
 }
 
+static void
+post_useless(POST_ARGS)
+{
+	struct roff_node *n;
+
+	n = mdoc->last;
+	mandoc_msg(MANDOCERR_MACRO_USELESS, mdoc->parse,
+	    n->line, n->pos, roff_name[n->tok]);
+}
+
 /*
  * Block macros.
  */
@@ -1879,7 +1915,7 @@ post_sh_see_also(POST_ARGS)
 			if (isalpha((const unsigned char)*name))
 				return;
 		lastpunct = n->string;
-		if (n->next == NULL)
+		if (n->next == NULL || n->next->tok == MDOC_Rs)
 			mandoc_vmsg(MANDOCERR_XR_PUNCT, mdoc->parse,
 			    n->line, n->pos, "%s after %s(%s)",
 			    lastpunct, lastname, lastsec);
@@ -2096,10 +2132,10 @@ post_par(POST_ARGS)
 	struct roff_node *np;
 
 	np = mdoc->last;
-	if (np->tok != ROFF_br && np->tok != MDOC_sp)
+	if (np->tok != ROFF_br && np->tok != ROFF_sp)
 		post_prevpar(mdoc);
 
-	if (np->tok == MDOC_sp) {
+	if (np->tok == ROFF_sp) {
 		if (np->child != NULL && np->child->next != NULL)
 			mandoc_vmsg(MANDOCERR_ARG_EXCESS, mdoc->parse,
 			    np->child->next->line, np->child->next->pos,
@@ -2115,7 +2151,7 @@ post_par(POST_ARGS)
 			return;
 	} else if (np->tok != MDOC_Pp && np->tok != MDOC_Lp &&
 	    (mdoc->last->tok != ROFF_br ||
-	     (np->tok != MDOC_sp && np->tok != ROFF_br)))
+	     (np->tok != ROFF_sp && np->tok != ROFF_br)))
 		return;
 
 	mandoc_vmsg(MANDOCERR_PAR_SKIP, mdoc->parse,
@@ -2264,11 +2300,19 @@ static void
 post_bx(POST_ARGS)
 {
 	struct roff_node	*n, *nch;
+	const char		*macro;
 
 	n = mdoc->last;
 	nch = n->child;
 
 	if (nch != NULL) {
+		macro = !strcmp(nch->string, "Open") ? "Ox" :
+		    !strcmp(nch->string, "Net") ? "Nx" :
+		    !strcmp(nch->string, "Free") ? "Fx" :
+		    !strcmp(nch->string, "DragonFly") ? "Dx" : NULL;
+		if (macro != NULL)
+			mandoc_msg(MANDOCERR_BX, mdoc->parse,
+			    n->line, n->pos, macro);
 		mdoc->last = nch;
 		nch = nch->next;
 		mdoc->next = ROFF_NEXT_SIBLING;