===================================================================
RCS file: /cvs/mandoc/man_term.c,v
retrieving revision 1.22
retrieving revision 1.25
diff -u -p -r1.22 -r1.25
--- mandoc/man_term.c	2009/08/13 12:54:52	1.22
+++ mandoc/man_term.c	2009/08/19 09:14:50	1.25
@@ -1,4 +1,4 @@
-/*	$Id: man_term.c,v 1.22 2009/08/13 12:54:52 kristaps Exp $ */
+/*	$Id: man_term.c,v 1.25 2009/08/19 09:14:50 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -27,15 +27,14 @@
 #define	INDENT		  7
 #define	HALFINDENT	  3
 
-#ifdef __linux__
-extern	size_t		  strlcpy(char *, const char *, size_t);
-extern	size_t		  strlcat(char *, const char *, size_t);
-#endif
-
+struct	mtermp {
+	int		  fl;
 #define	MANT_LITERAL	 (1 << 0)
+	int		  lmargin;
+};
 
 #define	DECL_ARGS 	  struct termp *p, \
-			  int *fl, \
+			  struct mtermp *mt, \
 			  const struct man_node *n, \
 			  const struct man_meta *m
 
@@ -101,8 +100,15 @@ static const struct termact termacts[MAN_MAX] = {
 	{ pre_nf, NULL }, /* nf */
 	{ pre_fi, NULL }, /* fi */
 	{ pre_r, NULL }, /* r */
+	{ NULL, NULL }, /* RE */
+	{ NULL, NULL }, /* RS */
 };
 
+#ifdef __linux__
+extern	size_t		  strlcpy(char *, const char *, size_t);
+extern	size_t		  strlcat(char *, const char *, size_t);
+#endif
+
 static	void		  print_head(struct termp *, 
 				const struct man_meta *);
 static	void		  print_body(DECL_ARGS);
@@ -117,16 +123,18 @@ static	int		  arg_width(const struct man_node *);
 int
 man_run(struct termp *p, const struct man *m)
 {
-	int		 fl;
+	struct mtermp	 mt;
 
 	print_head(p, man_meta(m));
 	p->flags |= TERMP_NOSPACE;
 	assert(man_node(m));
 	assert(MAN_ROOT == man_node(m)->type);
 
-	fl = 0;
+	mt.fl = 0;
+	mt.lmargin = INDENT;
+
 	if (man_node(m)->child)
-		print_body(p, &fl, man_node(m)->child, man_meta(m));
+		print_body(p, &mt, man_node(m)->child, man_meta(m));
 	print_foot(p, man_meta(m));
 
 	return(1);
@@ -223,7 +231,7 @@ static int
 pre_fi(DECL_ARGS)
 {
 
-	*fl &= ~MANT_LITERAL;
+	mt->fl &= ~MANT_LITERAL;
 	return(1);
 }
 
@@ -234,7 +242,7 @@ pre_nf(DECL_ARGS)
 {
 
 	term_newln(p);
-	*fl |= MANT_LITERAL;
+	mt->fl |= MANT_LITERAL;
 	return(1);
 }
 
@@ -251,7 +259,7 @@ pre_IR(DECL_ARGS)
 			p->flags |= TERMP_UNDER;
 		if (i > 0)
 			p->flags |= TERMP_NOSPACE;
-		print_node(p, fl, nn, m);
+		print_node(p, mt, nn, m);
 		if ( ! (i % 2))
 			p->flags &= ~TERMP_UNDER;
 	}
@@ -270,7 +278,7 @@ pre_IB(DECL_ARGS)
 		p->flags |= i % 2 ? TERMP_BOLD : TERMP_UNDER;
 		if (i > 0)
 			p->flags |= TERMP_NOSPACE;
-		print_node(p, fl, nn, m);
+		print_node(p, mt, nn, m);
 		p->flags &= i % 2 ? ~TERMP_BOLD : ~TERMP_UNDER;
 	}
 	return(0);
@@ -289,7 +297,7 @@ pre_RB(DECL_ARGS)
 			p->flags |= TERMP_BOLD;
 		if (i > 0)
 			p->flags |= TERMP_NOSPACE;
-		print_node(p, fl, nn, m);
+		print_node(p, mt, nn, m);
 		if (i % 2)
 			p->flags &= ~TERMP_BOLD;
 	}
@@ -309,7 +317,7 @@ pre_RI(DECL_ARGS)
 			p->flags |= TERMP_UNDER;
 		if (i > 0)
 			p->flags |= TERMP_NOSPACE;
-		print_node(p, fl, nn, m);
+		print_node(p, mt, nn, m);
 		if ( ! (i % 2))
 			p->flags &= ~TERMP_UNDER;
 	}
@@ -329,7 +337,7 @@ pre_BR(DECL_ARGS)
 			p->flags |= TERMP_BOLD;
 		if (i > 0)
 			p->flags |= TERMP_NOSPACE;
-		print_node(p, fl, nn, m);
+		print_node(p, mt, nn, m);
 		if ( ! (i % 2))
 			p->flags &= ~TERMP_BOLD;
 	}
@@ -348,7 +356,7 @@ pre_BI(DECL_ARGS)
 		p->flags |= i % 2 ? TERMP_UNDER : TERMP_BOLD;
 		if (i > 0)
 			p->flags |= TERMP_NOSPACE;
-		print_node(p, fl, nn, m);
+		print_node(p, mt, nn, m);
 		p->flags &= i % 2 ? ~TERMP_UNDER : ~TERMP_BOLD;
 	}
 	return(0);
@@ -409,21 +417,40 @@ pre_br(DECL_ARGS)
 static int
 pre_HP(DECL_ARGS)
 {
+	size_t			 len;
+	int			 ival;
+	const struct man_node	*nn;
 
 	switch (n->type) {
 	case (MAN_BLOCK):
 		fmt_block_vspace(p, n);
-		break;
+		return(1);
 	case (MAN_BODY):
 		p->flags |= TERMP_NOBREAK;
 		p->flags |= TERMP_TWOSPACE;
-		p->offset = INDENT;
-		p->rmargin = INDENT * 2;
 		break;
 	default:
 		return(0);
 	}
 
+	len = (size_t)mt->lmargin;
+	ival = -1;
+
+	/* Calculate offset. */
+
+	if (NULL != (nn = n->parent->head->child))
+		if ((ival = arg_width(nn)) >= 0)
+			len = (size_t)ival;
+
+	if (0 == len)
+		len = 1;
+
+	p->offset = INDENT;
+	p->rmargin = INDENT + len;
+
+	if (ival >= 0)
+		mt->lmargin = ival;
+
 	return(1);
 }
 
@@ -434,6 +461,9 @@ post_HP(DECL_ARGS)
 {
 
 	switch (n->type) {
+	case (MAN_BLOCK):
+		term_flushln(p);
+		break;
 	case (MAN_BODY):
 		term_flushln(p);
 		p->flags &= ~TERMP_NOBREAK;
@@ -454,6 +484,7 @@ pre_PP(DECL_ARGS)
 
 	switch (n->type) {
 	case (MAN_BLOCK):
+		mt->lmargin = INDENT;
 		fmt_block_vspace(p, n);
 		break;
 	default:
@@ -474,9 +505,6 @@ pre_IP(DECL_ARGS)
 	int			 ival;
 
 	switch (n->type) {
-	case (MAN_BLOCK):
-		fmt_block_vspace(p, n);
-		return(1);
 	case (MAN_BODY):
 		p->flags |= TERMP_NOLPAD;
 		p->flags |= TERMP_NOSPACE;
@@ -485,11 +513,14 @@ pre_IP(DECL_ARGS)
 		p->flags |= TERMP_NOBREAK;
 		p->flags |= TERMP_TWOSPACE;
 		break;
+	case (MAN_BLOCK):
+		fmt_block_vspace(p, n);
+		/* FALLTHROUGH */
 	default:
 		return(1);
 	}
 
-	len = INDENT * 2;
+	len = (size_t)mt->lmargin;
 	ival = -1;
 
 	/* Calculate offset. */
@@ -503,20 +534,27 @@ pre_IP(DECL_ARGS)
 		}
 
 	switch (n->type) {
-	case (MAN_BODY):
-		p->offset = INDENT + len;
-		p->rmargin = p->maxrmargin;
-		break;
 	case (MAN_HEAD):
+		/* Handle zero-width lengths. */
+		if (0 == len)
+			len = 1;
+
 		p->offset = INDENT;
 		p->rmargin = INDENT + len;
 		if (ival < 0)
 			break;
 
+		/* Set the saved left-margin. */
+		mt->lmargin = ival;
+
 		/* Don't print the length value. */
 		for (nn = n->child; nn->next; nn = nn->next)
-			print_node(p, fl, nn, m);
+			print_node(p, mt, nn, m);
 		return(0);
+	case (MAN_BODY):
+		p->offset = INDENT + len;
+		p->rmargin = p->maxrmargin;
+		break;
 	default:
 		break;
 	}
@@ -551,24 +589,60 @@ post_IP(DECL_ARGS)
 static int
 pre_TP(DECL_ARGS)
 {
+	const struct man_node	*nn;
+	size_t			 len;
+	int			 ival;
 
 	switch (n->type) {
-	case (MAN_BLOCK):
-		fmt_block_vspace(p, n);
-		break;
 	case (MAN_HEAD):
-		p->rmargin = INDENT * 2;
-		p->offset = INDENT;
 		p->flags |= TERMP_NOBREAK;
 		p->flags |= TERMP_TWOSPACE;
 		break;
 	case (MAN_BODY):
 		p->flags |= TERMP_NOLPAD;
 		p->flags |= TERMP_NOSPACE;
-		p->offset = INDENT * 2;
 		break;
+	case (MAN_BLOCK):
+		fmt_block_vspace(p, n);
+		/* FALLTHROUGH */
 	default:
+		return(1);
+	}
+
+	len = (size_t)mt->lmargin;
+	ival = -1;
+
+	/* Calculate offset. */
+
+	if (NULL != (nn = n->parent->head->child))
+		if (NULL != nn->next)
+			if ((ival = arg_width(nn)) >= 0)
+				len = (size_t)ival;
+
+	switch (n->type) {
+	case (MAN_HEAD):
+		/* Handle zero-length properly. */
+		if (0 == len)
+			len = 1;
+
+		p->offset = INDENT;
+		p->rmargin = INDENT + len;
+
+		/* Don't print same-line elements. */
+		for (nn = n->child; nn; nn = nn->next) 
+			if (nn->line > n->line)
+				print_node(p, mt, nn, m);
+
+		if (ival >= 0)
+			mt->lmargin = ival;
+
+		return(0);
+	case (MAN_BODY):
+		p->offset = INDENT + len;
+		p->rmargin = p->maxrmargin;
 		break;
+	default:
+		break;
 	}
 
 	return(1);
@@ -604,17 +678,24 @@ pre_SS(DECL_ARGS)
 
 	switch (n->type) {
 	case (MAN_BLOCK):
-		term_newln(p);
-		if (n->prev)
-			term_vspace(p);
+		mt->lmargin = INDENT;
+		/* If following a prior empty `SS', no vspace. */
+		if (n->prev && MAN_SS == n->prev->tok)
+			if (NULL == n->prev->body->child)
+				break;
+		if (NULL == n->prev)
+			break;
+		term_vspace(p);
 		break;
 	case (MAN_HEAD):
 		p->flags |= TERMP_BOLD;
 		p->offset = HALFINDENT;
 		break;
-	default:
+	case (MAN_BODY):
 		p->offset = INDENT;
 		break;
+	default:
+		break;
 	}
 
 	return(1);
@@ -631,6 +712,9 @@ post_SS(DECL_ARGS)
 		term_newln(p);
 		p->flags &= ~TERMP_BOLD;
 		break;
+	case (MAN_BODY):
+		term_newln(p);
+		break;
 	default:
 		break;
 	}
@@ -644,6 +728,7 @@ pre_SH(DECL_ARGS)
 
 	switch (n->type) {
 	case (MAN_BLOCK):
+		mt->lmargin = INDENT;
 		/* If following a prior empty `SH', no vspace. */
 		if (n->prev && MAN_SH == n->prev->tok)
 			if (NULL == n->prev->body->child)
@@ -709,23 +794,23 @@ print_node(DECL_ARGS)
 				n->string[sz - 2] == '\\')
 			p->flags |= TERMP_NOSPACE;
 		/* FIXME: this means that macro lines are munged!  */
-		if (MANT_LITERAL & *fl) {
+		if (MANT_LITERAL & mt->fl) {
 			p->flags |= TERMP_NOSPACE;
 			term_flushln(p);
 		}
 		break;
 	default:
 		if (termacts[n->tok].pre)
-			c = (*termacts[n->tok].pre)(p, fl, n, m);
+			c = (*termacts[n->tok].pre)(p, mt, n, m);
 		break;
 	}
 
 	if (c && n->child)
-		print_body(p, fl, n->child, m);
+		print_body(p, mt, n->child, m);
 
 	if (MAN_TEXT != n->type)
 		if (termacts[n->tok].post)
-			(*termacts[n->tok].post)(p, fl, n, m);
+			(*termacts[n->tok].post)(p, mt, n, m);
 }
 
 
@@ -733,10 +818,10 @@ static void
 print_body(DECL_ARGS)
 {
 
-	print_node(p, fl, n, m);
+	print_node(p, mt, n, m);
 	if ( ! n->next)
 		return;
-	print_body(p, fl, n->next, m);
+	print_body(p, mt, n->next, m);
 }