===================================================================
RCS file: /cvs/mandoc/mdoc_html.c,v
retrieving revision 1.23
retrieving revision 1.65
diff -u -p -r1.23 -r1.65
--- mandoc/mdoc_html.c	2009/10/07 12:35:24	1.23
+++ mandoc/mdoc_html.c	2010/05/17 22:11:42	1.65
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_html.c,v 1.23 2009/10/07 12:35:24 kristaps Exp $ */
+/*	$Id: mdoc_html.c,v 1.65 2010/05/17 22:11:42 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -14,21 +14,24 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <sys/types.h>
-#include <sys/param.h>
-#include <sys/queue.h>
 
 #include <assert.h>
 #include <ctype.h>
-#include <err.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
+#include "mandoc.h"
 #include "out.h"
 #include "html.h"
 #include "mdoc.h"
+#include "main.h"
 
 #define	INDENT		 5
 #define	HALFINDENT	 3
@@ -37,6 +40,10 @@
 			  const struct mdoc_node *n, \
 			  struct html *h
 
+#ifndef MIN
+#define	MIN(a,b)	((/*CONSTCOND*/(a)<(b))?(a):(b))
+#endif
+
 struct	htmlmdoc {
 	int		(*pre)(MDOC_ARGS);
 	void		(*post)(MDOC_ARGS);
@@ -49,16 +56,11 @@ static	void		  print_mdoc_nodelist(MDOC_ARGS);
 
 static	void		  a2width(const char *, struct roffsu *);
 static	void		  a2offs(const char *, struct roffsu *);
+
 static	int		  a2list(const struct mdoc_node *);
 
 static	void		  mdoc_root_post(MDOC_ARGS);
 static	int		  mdoc_root_pre(MDOC_ARGS);
-static	int		  mdoc_it_block_pre(MDOC_ARGS, int, 
-				struct roffsu *, int, 
-				struct roffsu *);
-static	int		  mdoc_it_head_pre(MDOC_ARGS, int, 
-				struct roffsu *);
-static	int		  mdoc_it_body_pre(MDOC_ARGS, int);
 
 static	void		  mdoc__x_post(MDOC_ARGS);
 static	int		  mdoc__x_pre(MDOC_ARGS);
@@ -96,6 +98,11 @@ static	void		  mdoc_fo_post(MDOC_ARGS);
 static	int		  mdoc_fo_pre(MDOC_ARGS);
 static	int		  mdoc_ic_pre(MDOC_ARGS);
 static	int		  mdoc_in_pre(MDOC_ARGS);
+static	int		  mdoc_it_block_pre(MDOC_ARGS, int, int,
+				struct roffsu *, struct roffsu *);
+static	int		  mdoc_it_head_pre(MDOC_ARGS, int, 
+				struct roffsu *);
+static	int		  mdoc_it_body_pre(MDOC_ARGS, int);
 static	int		  mdoc_it_pre(MDOC_ARGS);
 static	int		  mdoc_lb_pre(MDOC_ARGS);
 static	int		  mdoc_li_pre(MDOC_ARGS);
@@ -127,11 +134,6 @@ static	int		  mdoc_vt_pre(MDOC_ARGS);
 static	int		  mdoc_xr_pre(MDOC_ARGS);
 static	int		  mdoc_xx_pre(MDOC_ARGS);
 
-#ifdef __linux__
-extern	size_t	  	  strlcpy(char *, const char *, size_t);
-extern	size_t	  	  strlcat(char *, const char *, size_t);
-#endif
-
 static	const struct htmlmdoc mdocs[MDOC_MAX] = {
 	{mdoc_ap_pre, NULL}, /* Ap */
 	{NULL, NULL}, /* Dd */
@@ -199,7 +201,7 @@ static	const struct htmlmdoc mdocs[MDOC_MAX] = {
 	{NULL, NULL}, /* Dc */
 	{mdoc_dq_pre, mdoc_dq_post}, /* Do */
 	{mdoc_dq_pre, mdoc_dq_post}, /* Dq */
-	{NULL, NULL}, /* Ec */
+	{NULL, NULL}, /* Ec */ /* FIXME: no space */
 	{NULL, NULL}, /* Ef */
 	{mdoc_em_pre, NULL}, /* Em */ 
 	{NULL, NULL}, /* Eo */
@@ -253,6 +255,7 @@ static	const struct htmlmdoc mdocs[MDOC_MAX] = {
 	{mdoc__x_pre, mdoc__x_post}, /* %Q */ 
 	{mdoc_sp_pre, NULL}, /* br */
 	{mdoc_sp_pre, NULL}, /* sp */ 
+	{mdoc__x_pre, mdoc__x_post}, /* %U */ 
 };
 
 
@@ -264,7 +267,7 @@ html_mdoc(void *arg, const struct mdoc *m)
 
 	h = (struct html *)arg;
 
-	print_gen_doctype(h);
+	print_gen_decls(h);
 	t = print_otag(h, TAG_HTML, 0, NULL);
 	print_mdoc(mdoc_meta(m), mdoc_node(m), h);
 	print_tagq(h, t);
@@ -326,8 +329,10 @@ static void
 a2width(const char *p, struct roffsu *su)
 {
 
-	if ( ! a2roffsu(p, su))
-		SCALE_HS_INIT(su, (int)strlen(p));
+	if ( ! a2roffsu(p, su, SCALE_MAX)) {
+		su->unit = SCALE_EM;
+		su->scale = (int)strlen(p);
+	}
 }
 
 
@@ -340,14 +345,18 @@ static void
 a2offs(const char *p, struct roffsu *su)
 {
 
+	/* FIXME: "right"? */
+
 	if (0 == strcmp(p, "left"))
 		SCALE_HS_INIT(su, 0);
 	else if (0 == strcmp(p, "indent"))
 		SCALE_HS_INIT(su, INDENT);
 	else if (0 == strcmp(p, "indent-two"))
 		SCALE_HS_INIT(su, INDENT * 2);
-	else if ( ! a2roffsu(p, su))
-		SCALE_HS_INIT(su, (int)strlen(p));
+	else if ( ! a2roffsu(p, su, SCALE_MAX)) {
+		su->unit = SCALE_EM;
+		su->scale = (int)strlen(p);
+	}
 }
 
 
@@ -379,7 +388,7 @@ print_mdoc_head(MDOC_ARGS)
 
 	print_gen_head(h);
 	bufinit(h);
-	buffmt(h, "%s(%d)", m->title, m->msec);
+	buffmt(h, "%s(%s)", m->title, m->msec);
 
 	if (m->arch) {
 		bufcat(h, " (");
@@ -409,7 +418,7 @@ print_mdoc_node(MDOC_ARGS)
 	struct tag	*t;
 
 	child = 1;
-	t = SLIST_FIRST(&h->tags);
+	t = h->tags.head;
 
 	bufinit(h);
 	switch (n->type) {
@@ -418,7 +427,7 @@ print_mdoc_node(MDOC_ARGS)
 		break;
 	case (MDOC_TEXT):
 		print_text(h, n->string);
-		break;
+		return;
 	default:
 		if (mdocs[n->tok].pre)
 			child = (*mdocs[n->tok].pre)(m, n, h);
@@ -435,8 +444,6 @@ print_mdoc_node(MDOC_ARGS)
 	case (MDOC_ROOT):
 		mdoc_root_post(m, n, h);
 		break;
-	case (MDOC_TEXT):
-		break;
 	default:
 		if (mdocs[n->tok].post)
 			(*mdocs[n->tok].post)(m, n, h);
@@ -449,26 +456,24 @@ print_mdoc_node(MDOC_ARGS)
 static void
 mdoc_root_post(MDOC_ARGS)
 {
-	struct tm	 tm;
-	struct htmlpair	 tag[2];
+	struct htmlpair	 tag[3];
 	struct tag	*t, *tt;
-	char		 b[BUFSIZ];
+	char		 b[DATESIZ];
 
+	time2a(m->date, b, DATESIZ);
+
 	/*
 	 * XXX: this should use divs, but in Firefox, divs with nested
 	 * divs for some reason puke when trying to put a border line
 	 * below.  So I use tables, instead.
 	 */
 
-	(void)localtime_r(&m->date, &tm);
-
-	if (0 == strftime(b, BUFSIZ - 1, "%B %e, %Y", &tm))
-		err(EXIT_FAILURE, "strftime");
-
 	PAIR_CLASS_INIT(&tag[0], "footer");
 	bufcat_style(h, "width", "100%");
 	PAIR_STYLE_INIT(&tag[1], h);
-	t = print_otag(h, TAG_TABLE, 2, tag);
+	PAIR_SUMMARY_INIT(&tag[2], "footer");
+
+	t = print_otag(h, TAG_TABLE, 3, tag);
 	tt = print_otag(h, TAG_TR, 0, NULL);
 
 	bufinit(h);
@@ -492,7 +497,7 @@ mdoc_root_post(MDOC_ARGS)
 static int
 mdoc_root_pre(MDOC_ARGS)
 {
-	struct htmlpair	 tag[2];
+	struct htmlpair	 tag[3];
 	struct tag	*t, *tt;
 	char		 b[BUFSIZ], title[BUFSIZ];
 
@@ -505,14 +510,17 @@ mdoc_root_pre(MDOC_ARGS)
 	}
 
 	(void)snprintf(title, BUFSIZ - 1, 
-			"%s(%d)", m->title, m->msec);
+			"%s(%s)", m->title, m->msec);
 
 	/* XXX: see note in mdoc_root_post() about divs. */
 
 	PAIR_CLASS_INIT(&tag[0], "header");
 	bufcat_style(h, "width", "100%");
 	PAIR_STYLE_INIT(&tag[1], h);
-	t = print_otag(h, TAG_TABLE, 2, tag);
+	PAIR_SUMMARY_INIT(&tag[2], "header");
+
+	t = print_otag(h, TAG_TABLE, 3, tag);
+
 	tt = print_otag(h, TAG_TR, 0, NULL);
 
 	bufinit(h);
@@ -548,7 +556,7 @@ mdoc_sh_pre(MDOC_ARGS)
 {
 	struct htmlpair		 tag[2];
 	const struct mdoc_node	*nn;
-	char			 link[BUFSIZ];
+	char			 buf[BUFSIZ];
 	struct roffsu		 su;
 
 	if (MDOC_BODY == n->type) {
@@ -575,21 +583,16 @@ mdoc_sh_pre(MDOC_ARGS)
 		return(1);
 	}
 
-	link[0] = 0;
+	buf[0] = '\0';
 	for (nn = n->child; nn; nn = nn->next) {
-		(void)strlcat(link, nn->string, BUFSIZ);
+		html_idcat(buf, nn->string, BUFSIZ);
 		if (nn->next)
-			(void)strlcat(link, "_", BUFSIZ);
+			html_idcat(buf, " ", BUFSIZ);
 	}
 
-	/* 
-	 * TODO: make sure there are no duplicates, as HTML does not
-	 * allow for multiple `id' tags of the same name.
-	 */
-
 	PAIR_CLASS_INIT(&tag[0], "sec-head");
-	tag[1].key = ATTR_ID;
-	tag[1].val = link;
+	PAIR_ID_INIT(&tag[1], buf);
+
 	print_otag(h, TAG_DIV, 2, tag);
 	return(1);
 }
@@ -601,7 +604,7 @@ mdoc_ss_pre(MDOC_ARGS)
 {
 	struct htmlpair	 	 tag[3];
 	const struct mdoc_node	*nn;
-	char			 link[BUFSIZ];
+	char			 buf[BUFSIZ];
 	struct roffsu		 su;
 
 	SCALE_VS_INIT(&su, 1);
@@ -628,11 +631,11 @@ mdoc_ss_pre(MDOC_ARGS)
 
 	/* TODO: see note in mdoc_sh_pre() about duplicates. */
 
-	link[0] = 0;
+	buf[0] = '\0';
 	for (nn = n->child; nn; nn = nn->next) {
-		(void)strlcat(link, nn->string, BUFSIZ);
+		html_idcat(buf, nn->string, BUFSIZ);
 		if (nn->next)
-			(void)strlcat(link, "_", BUFSIZ);
+			html_idcat(buf, " ", BUFSIZ);
 	}
 
 	SCALE_HS_INIT(&su, INDENT - HALFINDENT);
@@ -641,8 +644,8 @@ mdoc_ss_pre(MDOC_ARGS)
 
 	PAIR_CLASS_INIT(&tag[0], "ssec-head");
 	PAIR_STYLE_INIT(&tag[1], h);
-	tag[2].key = ATTR_ID;
-	tag[2].val = link;
+	PAIR_ID_INIT(&tag[2], buf);
+
 	print_otag(h, TAG_DIV, 3, tag);
 	return(1);
 }
@@ -656,10 +659,19 @@ mdoc_fl_pre(MDOC_ARGS)
 
 	PAIR_CLASS_INIT(&tag, "flag");
 	print_otag(h, TAG_SPAN, 1, &tag);
-	if (MDOC_Fl == n->tok) {
-		print_text(h, "\\-");
+
+	/* `Cm' has no leading hyphen. */
+
+	if (MDOC_Cm == n->tok)
+		return(1);
+
+	print_text(h, "\\-");
+
+	if (n->child)
 		h->flags |= HTML_NOSPACE;
-	}
+	else if (n->next && n->next->line == n->line)
+		h->flags |= HTML_NOSPACE;
+
 	return(1);
 }
 
@@ -673,7 +685,8 @@ mdoc_nd_pre(MDOC_ARGS)
 	if (MDOC_BODY != n->type)
 		return(1);
 
-	/* XXX - this can contain block elements! */
+	/* XXX: this tag in theory can contain block elements. */
+
 	print_text(h, "\\(em");
 	PAIR_CLASS_INIT(&tag, "desc-body");
 	print_otag(h, TAG_SPAN, 1, &tag);
@@ -690,7 +703,8 @@ mdoc_op_pre(MDOC_ARGS)
 	if (MDOC_BODY != n->type)
 		return(1);
 
-	/* XXX - this can contain block elements! */
+	/* XXX: this tag in theory can contain block elements. */
+
 	print_text(h, "\\(lB");
 	h->flags |= HTML_NOSPACE;
 	PAIR_CLASS_INIT(&tag, "opt");
@@ -716,13 +730,16 @@ mdoc_nm_pre(MDOC_ARGS)
 {
 	struct htmlpair	tag;
 
-	if ( ! (HTML_NEWLINE & h->flags))
-		if (SEC_SYNOPSIS == n->sec) {
-			bufcat_style(h, "clear", "both");
-			PAIR_STYLE_INIT(&tag, h);
-			print_otag(h, TAG_BR, 1, &tag);
-		}
+	if (NULL == n->child && NULL == m->name)
+		return(1);
 
+	if (SEC_SYNOPSIS == n->sec && 
+			n->prev && MDOC_LINE & n->flags) {
+		bufcat_style(h, "clear", "both");
+		PAIR_STYLE_INIT(&tag, h);
+		print_otag(h, TAG_BR, 1, &tag);
+	}
+
 	PAIR_CLASS_INIT(&tag, "name");
 	print_otag(h, TAG_SPAN, 1, &tag);
 	if (NULL == n->child)
@@ -739,14 +756,16 @@ mdoc_xr_pre(MDOC_ARGS)
 	struct htmlpair	 	 tag[2];
 	const struct mdoc_node	*nn;
 
+	if (NULL == n->child)
+		return(0);
+
 	PAIR_CLASS_INIT(&tag[0], "link-man");
 
 	if (h->base_man) {
 		buffmt_man(h, n->child->string, 
 				n->child->next ? 
 				n->child->next->string : NULL);
-		tag[1].key = ATTR_HREF;
-		tag[1].val = h->buf;
+		PAIR_HREF_INIT(&tag[1], h->buf);
 		print_otag(h, TAG_A, 2, tag);
 	} else
 		print_otag(h, TAG_A, 1, tag);
@@ -801,7 +820,7 @@ mdoc_xx_pre(MDOC_ARGS)
 		pp = "BSDI BSD/OS";
 		break;
 	case (MDOC_Dx):
-		pp = "DragonFlyBSD";
+		pp = "DragonFly";
 		break;
 	case (MDOC_Fx):
 		pp = "FreeBSD";
@@ -849,8 +868,8 @@ mdoc_bx_pre(MDOC_ARGS)
 
 /* ARGSUSED */
 static int
-mdoc_it_block_pre(MDOC_ARGS, int type, struct roffsu *offs, 
-		int comp, struct roffsu *width)
+mdoc_it_block_pre(MDOC_ARGS, int type, int comp,
+		struct roffsu *offs, struct roffsu *width)
 {
 	struct htmlpair	 	 tag;
 	const struct mdoc_node	*nn;
@@ -859,12 +878,20 @@ mdoc_it_block_pre(MDOC_ARGS, int type, struct roffsu *
 	nn = n->parent->parent;
 	assert(nn->args);
 
-	if (MDOC_Column == type)
-		comp = 0;
+	/* XXX: see notes in mdoc_it_pre(). */
+
+	if (MDOC_Column == type) {
+		/* Don't width-pad on the left. */
+		SCALE_HS_INIT(width, 0);
+		/* Also disallow non-compact. */
+		comp = 1;
+	}
 	if (MDOC_Diag == type)
+		/* Mandate non-compact with empty prior. */
 		if (n->prev && NULL == n->prev->body->child)
 			comp = 1;
 
+	bufcat_style(h, "clear", "both");
 	if (offs->scale > 0)
 		bufcat_su(h, "margin-left", offs);
 	if (width->scale > 0)
@@ -872,6 +899,8 @@ mdoc_it_block_pre(MDOC_ARGS, int type, struct roffsu *
 
 	PAIR_STYLE_INIT(&tag, h);
 
+	/* Mandate compact following `Ss' and `Sh' starts. */
+
 	for (nn = n; nn && ! comp; nn = nn->parent) {
 		if (MDOC_BLOCK != nn->type)
 			continue;
@@ -892,6 +921,7 @@ mdoc_it_block_pre(MDOC_ARGS, int type, struct roffsu *
 }
 
 
+/* ARGSUSED */
 static int
 mdoc_it_body_pre(MDOC_ARGS, int type)
 {
@@ -906,6 +936,10 @@ mdoc_it_body_pre(MDOC_ARGS, int type)
 	case (MDOC_Column):
 		break;
 	default:
+		/* 
+		 * XXX: this tricks CSS into aligning the bodies with
+		 * the right-padding in the head. 
+		 */
 		SCALE_HS_INIT(&su, 2);
 		bufcat_su(h, "margin-left", &su);
 		PAIR_STYLE_INIT(&tag, h);
@@ -917,6 +951,7 @@ mdoc_it_body_pre(MDOC_ARGS, int type)
 }
 
 
+/* ARGSUSED */
 static int
 mdoc_it_head_pre(MDOC_ARGS, int type, struct roffsu *width)
 {
@@ -926,10 +961,10 @@ mdoc_it_head_pre(MDOC_ARGS, int type, struct roffsu *w
 
 	switch (type) {
 	case (MDOC_Item):
-		/* FALLTHROUGH */
+		return(0);
 	case (MDOC_Ohang):
-		print_otag(h, TAG_DIV, 0, NULL);
-		break;
+		print_otag(h, TAG_DIV, 0, &tag);
+		return(1);
 	case (MDOC_Column):
 		bufcat_su(h, "min-width", width);
 		bufcat_style(h, "clear", "none");
@@ -944,6 +979,8 @@ mdoc_it_head_pre(MDOC_ARGS, int type, struct roffsu *w
 		bufcat_su(h, "margin-left", width);
 		if (n->next && n->next->child)
 			bufcat_style(h, "float", "left");
+
+		/* XXX: buffer if we run into body. */
 		SCALE_HS_INIT(width, 1);
 		bufcat_su(h, "margin-right", width);
 		PAIR_STYLE_INIT(&tag, h);
@@ -957,7 +994,7 @@ mdoc_it_head_pre(MDOC_ARGS, int type, struct roffsu *w
 		print_otag(h, TAG_SPAN, 1, &tag);
 		break;
 	case (MDOC_Enum):
-		ord = SLIST_FIRST(&h->ords);
+		ord = h->ords.head;
 		assert(ord);
 		nbuf[BUFSIZ - 1] = 0;
 		(void)snprintf(nbuf, BUFSIZ - 1, "%d.", ord->pos++);
@@ -987,7 +1024,11 @@ mdoc_it_pre(MDOC_ARGS)
 	const struct mdoc_node	*bl, *nn;
 	struct roffsu		 width, offs;
 
-	/* This is the `Bl' block parent. */
+	/* 
+	 * XXX: be very careful in changing anything, here.  Lists in
+	 * mandoc have many peculiarities; furthermore, they don't
+	 * translate well into HTML and require a bit of mangling.
+	 */
 
 	bl = n->parent->parent;
 	if (MDOC_BLOCK != n->type)
@@ -997,6 +1038,8 @@ mdoc_it_pre(MDOC_ARGS)
 
 	/* Set default width and offset. */
 
+	SCALE_HS_INIT(&offs, 0);
+
 	switch (type) {
 	case (MDOC_Enum):
 		/* FALLTHROUGH */
@@ -1012,14 +1055,14 @@ mdoc_it_pre(MDOC_ARGS)
 		break;
 	}
 
-	SCALE_HS_INIT(&offs, 0);
-
 	/* Get width, offset, and compact arguments. */
 
 	for (wp = -1, comp = i = 0; i < (int)bl->args->argc; i++) 
 		switch (bl->args->argv[i].arg) {
+		case (MDOC_Column):
+			wp = i; /* Save for later. */
+			break;
 		case (MDOC_Width):
-			wp = i; /* Save offset. */
 			a2width(bl->args->argv[i].value[0], &width);
 			break;
 		case (MDOC_Offset):
@@ -1035,6 +1078,10 @@ mdoc_it_pre(MDOC_ARGS)
 	/* Override width in some cases. */
 
 	switch (type) {
+	case (MDOC_Ohang):
+		/* FALLTHROUGH */
+	case (MDOC_Item):
+		/* FALLTHROUGH */
 	case (MDOC_Inset):
 		/* FALLTHROUGH */
 	case (MDOC_Diag):
@@ -1051,8 +1098,8 @@ mdoc_it_pre(MDOC_ARGS)
 	if (MDOC_BODY == n->type)
 		return(mdoc_it_body_pre(m, n, h, type));
 	if (MDOC_BLOCK == n->type)
-		return(mdoc_it_block_pre(m, n, h, type, 
-					&offs, comp, &width));
+		return(mdoc_it_block_pre(m, n, h, type, comp,
+					&offs, &width));
 
 	/* Override column widths. */
 
@@ -1060,7 +1107,7 @@ mdoc_it_pre(MDOC_ARGS)
 		nn = n->parent->child;
 		for (i = 0; nn && nn != n; nn = nn->next, i++)
 			/* Counter... */ ;
-		if (wp >= 0 && i < (int)bl->args[wp].argv->sz)
+		if (i < (int)bl->args->argv[wp].sz)
 			a2width(bl->args->argv[wp].value[i], &width);
 	}
 
@@ -1074,17 +1121,22 @@ mdoc_bl_pre(MDOC_ARGS)
 {
 	struct ord	*ord;
 
+	if (MDOC_HEAD == n->type)
+		return(0);
 	if (MDOC_BLOCK != n->type)
 		return(1);
 	if (MDOC_Enum != a2list(n))
 		return(1);
 
 	ord = malloc(sizeof(struct ord));
-	if (NULL == ord)
-		err(EXIT_FAILURE, "malloc");
+	if (NULL == ord) {
+		perror(NULL);
+		exit(EXIT_FAILURE);
+	}
 	ord->cookie = n;
 	ord->pos = 1;
-	SLIST_INSERT_HEAD(&h->ords, ord, entry);
+	ord->next = h->ords.head;
+	h->ords.head = ord;
 	return(1);
 }
 
@@ -1100,9 +1152,9 @@ mdoc_bl_post(MDOC_ARGS)
 	if (MDOC_Enum != a2list(n))
 		return;
 
-	ord = SLIST_FIRST(&h->ords);
+	ord = h->ords.head;
 	assert(ord);
-	SLIST_REMOVE_HEAD(&h->ords, entry);
+	h->ords.head = ord->next;
 	free(ord);
 }
 
@@ -1133,7 +1185,7 @@ mdoc_ex_pre(MDOC_ARGS)
 			h->flags &= ~HTML_NOSPACE;
 	}
 
-	if (n->child->next)
+	if (n->child && n->child->next)
 		print_text(h, "utilities exit");
 	else
 		print_text(h, "utility exits");
@@ -1239,7 +1291,9 @@ mdoc_d1_pre(MDOC_ARGS)
 	if (MDOC_BLOCK != n->type)
 		return(1);
 
-	SCALE_VS_INIT(&su, INDENT - 2);
+	/* FIXME: D1 shouldn't be literal. */
+
+	SCALE_VS_INIT(&su, INDENT - 1);
 	bufcat_su(h, "margin-left", &su);
 	PAIR_CLASS_INIT(&tag[0], "lit");
 	PAIR_STYLE_INIT(&tag[1], h);
@@ -1254,20 +1308,17 @@ mdoc_sx_pre(MDOC_ARGS)
 {
 	struct htmlpair		 tag[2];
 	const struct mdoc_node	*nn;
-	char			 link[BUFSIZ];
+	char			 buf[BUFSIZ];
 
-	/* FIXME: duplicates? */
-
-	(void)strlcpy(link, "#", BUFSIZ);
+	strlcpy(buf, "#", BUFSIZ);
 	for (nn = n->child; nn; nn = nn->next) {
-		(void)strlcat(link, nn->string, BUFSIZ);
+		html_idcat(buf, nn->string, BUFSIZ);
 		if (nn->next)
-			(void)strlcat(link, "_", BUFSIZ);
+			html_idcat(buf, " ", BUFSIZ);
 	}
 
 	PAIR_CLASS_INIT(&tag[0], "link-sec");
-	tag[1].key = ATTR_HREF;
-	tag[1].val = link;
+	PAIR_HREF_INIT(&tag[1], buf);
 
 	print_otag(h, TAG_A, 2, tag);
 	return(1);
@@ -1315,16 +1366,19 @@ mdoc_bd_pre(MDOC_ARGS)
 	else
 		bl = n->parent;
 
+	SCALE_VS_INIT(&su, 0);
+
 	type = comp = 0;
 	for (i = 0; i < (int)bl->args->argc; i++) 
 		switch (bl->args->argv[i].arg) {
 		case (MDOC_Offset):
 			a2offs(bl->args->argv[i].value[0], &su);
-			bufcat_su(h, "margin-left", &su);
 			break;
 		case (MDOC_Compact):
 			comp = 1;
 			break;
+		case (MDOC_Centred):
+			/* FALLTHROUGH */
 		case (MDOC_Ragged):
 			/* FALLTHROUGH */
 		case (MDOC_Filled):
@@ -1334,9 +1388,15 @@ mdoc_bd_pre(MDOC_ARGS)
 		case (MDOC_Literal):
 			type = bl->args->argv[i].arg;
 			break;
+		default:
+			break;
 		}
 
+	/* FIXME: -centered, etc. formatting. */
+	/* FIXME: does not respect -offset ??? */
+
 	if (MDOC_BLOCK == n->type) {
+		bufcat_su(h, "margin-left", &su);
 		for (nn = n; nn && ! comp; nn = nn->parent) {
 			if (MDOC_BLOCK != nn->type)
 				continue;
@@ -1346,7 +1406,8 @@ mdoc_bd_pre(MDOC_ARGS)
 				break;
 		}
 		if (comp) {
-			print_otag(h, TAG_DIV, 0, tag);
+			PAIR_STYLE_INIT(&tag[0], h);
+			print_otag(h, TAG_DIV, 1, tag);
 			return(1);
 		}
 		SCALE_VS_INIT(&su, 1);
@@ -1423,6 +1484,7 @@ mdoc_cd_pre(MDOC_ARGS)
 {
 	struct htmlpair	tag;
 
+	print_otag(h, TAG_DIV, 0, NULL);
 	PAIR_CLASS_INIT(&tag, "config");
 	print_otag(h, TAG_SPAN, 1, &tag);
 	return(1);
@@ -1501,7 +1563,7 @@ mdoc_fd_pre(MDOC_ARGS)
 	struct htmlpair	 tag;
 	struct roffsu	 su;
 
-	if (SEC_SYNOPSIS == n->sec) {
+	if (SEC_SYNOPSIS == n->sec && MDOC_LINE & n->flags) {
 		if (n->next && MDOC_Fd != n->next->tok) {
 			SCALE_VS_INIT(&su, 1);
 			bufcat_su(h, "margin-bottom", &su);
@@ -1524,7 +1586,7 @@ mdoc_vt_pre(MDOC_ARGS)
 	struct htmlpair	 tag;
 	struct roffsu	 su;
 
-	if (SEC_SYNOPSIS == n->sec) {
+	if (SEC_SYNOPSIS == n->sec && MDOC_BLOCK == n->type) {
 		if (n->next && MDOC_Vt != n->next->tok) {
 			SCALE_VS_INIT(&su, 1);
 			bufcat_su(h, "margin-bottom", &su);
@@ -1532,7 +1594,10 @@ mdoc_vt_pre(MDOC_ARGS)
 			print_otag(h, TAG_DIV, 1, &tag);
 		} else
 			print_otag(h, TAG_DIV, 0, NULL);
-	}
+		
+		return(1);
+	} else if (MDOC_HEAD == n->type)
+		return(0);
 
 	PAIR_CLASS_INIT(&tag, "type");
 	print_otag(h, TAG_SPAN, 1, &tag);
@@ -1545,17 +1610,9 @@ static int
 mdoc_ft_pre(MDOC_ARGS)
 {
 	struct htmlpair	 tag;
-	struct roffsu	 su;
 
-	if (SEC_SYNOPSIS == n->sec) {
-		if (n->prev && MDOC_Fo == n->prev->tok) {
-			SCALE_VS_INIT(&su, 1);
-			bufcat_su(h, "margin-top", &su);
-			PAIR_STYLE_INIT(&tag, h);
-			print_otag(h, TAG_DIV, 1, &tag);
-		} else
-			print_otag(h, TAG_DIV, 0, NULL);
-	}
+	if (SEC_SYNOPSIS == n->sec && MDOC_LINE & n->flags)
+		print_otag(h, TAG_DIV, 0, NULL);
 
 	PAIR_CLASS_INIT(&tag, "ftype");
 	print_otag(h, TAG_SPAN, 1, &tag);
@@ -1575,7 +1632,7 @@ mdoc_fn_pre(MDOC_ARGS)
 	int			 sz, i;
 	struct roffsu		 su;
 
-	if (SEC_SYNOPSIS == n->sec) {
+	if (SEC_SYNOPSIS == n->sec && MDOC_LINE & n->flags) {
 		SCALE_HS_INIT(&su, INDENT);
 		bufcat_su(h, "margin-left", &su);
 		su.scale = -su.scale;
@@ -1592,7 +1649,8 @@ mdoc_fn_pre(MDOC_ARGS)
 	assert(n->child->string);
 	sp = n->child->string;
 
-	if ((ep = strchr(sp, ' '))) {
+	ep = strchr(sp, ' ');
+	if (NULL != ep) {
 		PAIR_CLASS_INIT(&tag[0], "ftype");
 		t = print_otag(h, TAG_SPAN, 1, tag);
 	
@@ -1608,10 +1666,27 @@ mdoc_fn_pre(MDOC_ARGS)
 	}
 
 	PAIR_CLASS_INIT(&tag[0], "fname");
+
+	/*
+	 * FIXME: only refer to IDs that we know exist.
+	 */
+
+#if 0
+	if (SEC_SYNOPSIS == n->sec) {
+		nbuf[0] = '\0';
+		html_idcat(nbuf, sp, BUFSIZ);
+		PAIR_ID_INIT(&tag[1], nbuf);
+	} else {
+		strlcpy(nbuf, "#", BUFSIZ);
+		html_idcat(nbuf, sp, BUFSIZ);
+		PAIR_HREF_INIT(&tag[1], nbuf);
+	}
+#endif
+
 	t = print_otag(h, TAG_SPAN, 1, tag);
 
 	if (sp) {
-		(void)strlcpy(nbuf, sp, BUFSIZ);
+		strlcpy(nbuf, sp, BUFSIZ);
 		print_text(h, nbuf);
 	}
 
@@ -1669,8 +1744,11 @@ mdoc_sp_pre(MDOC_ARGS)
 	bufcat_su(h, "height", &su);
 	PAIR_STYLE_INIT(&tag, h);
 	print_otag(h, TAG_DIV, 1, &tag);
-	return(1);
+	/* So the div isn't empty: */
+	print_text(h, "\\~");
 
+	return(0);
+
 }
 
 
@@ -1709,10 +1787,12 @@ mdoc_lk_pre(MDOC_ARGS)
 	nn = n->child;
 
 	PAIR_CLASS_INIT(&tag[0], "link-ext");
-	tag[1].key = ATTR_HREF;
-	tag[1].val = nn->string;
+	PAIR_HREF_INIT(&tag[1], nn->string);
 	print_otag(h, TAG_A, 2, tag);
 
+	if (NULL == nn->next) 
+		return(1);
+
 	for (nn = nn->next; nn; nn = nn->next) 
 		print_text(h, nn->string);
 
@@ -1734,7 +1814,7 @@ mdoc_mt_pre(MDOC_ARGS)
 		bufinit(h);
 		bufcat(h, "mailto:");
 		bufcat(h, nn->string);
-		PAIR_STYLE_INIT(&tag[1], h);
+		PAIR_HREF_INIT(&tag[1], h->buf);
 		t = print_otag(h, TAG_A, 2, tag);
 		print_text(h, nn->string);
 		print_tagq(h, t);
@@ -1749,14 +1829,20 @@ static int
 mdoc_fo_pre(MDOC_ARGS)
 {
 	struct htmlpair	tag;
+	struct roffsu	su;
 
 	if (MDOC_BODY == n->type) {
 		h->flags |= HTML_NOSPACE;
 		print_text(h, "(");
 		h->flags |= HTML_NOSPACE;
 		return(1);
-	} else if (MDOC_BLOCK == n->type)
+	} else if (MDOC_BLOCK == n->type && n->next) {
+		SCALE_VS_INIT(&su, 1);
+		bufcat_su(h, "margin-bottom", &su);
+		PAIR_STYLE_INIT(&tag, h);
+		print_otag(h, TAG_DIV, 1, &tag);
 		return(1);
+	}
 
 	PAIR_CLASS_INIT(&tag, "fname");
 	print_otag(h, TAG_SPAN, 1, &tag);
@@ -1787,7 +1873,7 @@ mdoc_in_pre(MDOC_ARGS)
 	int			 i;
 	struct roffsu		 su;
 
-	if (SEC_SYNOPSIS == n->sec) {
+	if (SEC_SYNOPSIS == n->sec && MDOC_LINE & n->flags) {
 		if (n->next && MDOC_In != n->next->tok) {
 			SCALE_VS_INIT(&su, 1);
 			bufcat_su(h, "margin-bottom", &su);
@@ -1797,6 +1883,8 @@ mdoc_in_pre(MDOC_ARGS)
 			print_otag(h, TAG_DIV, 0, NULL);
 	}
 
+	/* FIXME: there's a buffer bug in here somewhere. */
+
 	PAIR_CLASS_INIT(&tag[0], "includes");
 	print_otag(h, TAG_SPAN, 1, tag);
 
@@ -1811,10 +1899,11 @@ mdoc_in_pre(MDOC_ARGS)
 	for (nn = n->child; nn; nn = nn->next) {
 		PAIR_CLASS_INIT(&tag[0], "link-includes");
 		i = 1;
+		bufinit(h);
 		if (h->base_includes) {
 			buffmt_includes(h, nn->string);
-			tag[i].key = ATTR_HREF;
-			tag[i++].val = h->buf;
+			PAIR_HREF_INIT(&tag[i], h->buf);
+			i++;
 		}
 		t = print_otag(h, TAG_A, i, tag);
 		print_mdoc_node(m, nn, h);
@@ -1866,7 +1955,7 @@ mdoc_rv_pre(MDOC_ARGS)
 			print_text(h, "()");
 	}
 
-	if (n->child->next)
+	if (n->child && n->child->next)
 		print_text(h, "functions return");
 	else
 		print_text(h, "function returns");
@@ -2089,7 +2178,7 @@ mdoc_lb_pre(MDOC_ARGS)
 {
 	struct htmlpair	tag;
 
-	if (SEC_SYNOPSIS == n->sec)
+	if (SEC_LIBRARY == n->sec && MDOC_LINE & n->flags)
 		print_otag(h, TAG_DIV, 0, NULL);
 	PAIR_CLASS_INIT(&tag, "lib");
 	print_otag(h, TAG_SPAN, 1, &tag);
@@ -2101,56 +2190,63 @@ mdoc_lb_pre(MDOC_ARGS)
 static int
 mdoc__x_pre(MDOC_ARGS)
 {
-	struct htmlpair	tag;
+	struct htmlpair	tag[2];
 
 	switch (n->tok) {
 	case(MDOC__A):
-		PAIR_CLASS_INIT(&tag, "ref-auth");
+		PAIR_CLASS_INIT(&tag[0], "ref-auth");
 		break;
 	case(MDOC__B):
-		PAIR_CLASS_INIT(&tag, "ref-book");
+		PAIR_CLASS_INIT(&tag[0], "ref-book");
 		break;
 	case(MDOC__C):
-		PAIR_CLASS_INIT(&tag, "ref-city");
+		PAIR_CLASS_INIT(&tag[0], "ref-city");
 		break;
 	case(MDOC__D):
-		PAIR_CLASS_INIT(&tag, "ref-date");
+		PAIR_CLASS_INIT(&tag[0], "ref-date");
 		break;
 	case(MDOC__I):
-		PAIR_CLASS_INIT(&tag, "ref-issue");
+		PAIR_CLASS_INIT(&tag[0], "ref-issue");
 		break;
 	case(MDOC__J):
-		PAIR_CLASS_INIT(&tag, "ref-jrnl");
+		PAIR_CLASS_INIT(&tag[0], "ref-jrnl");
 		break;
 	case(MDOC__N):
-		PAIR_CLASS_INIT(&tag, "ref-num");
+		PAIR_CLASS_INIT(&tag[0], "ref-num");
 		break;
 	case(MDOC__O):
-		PAIR_CLASS_INIT(&tag, "ref-opt");
+		PAIR_CLASS_INIT(&tag[0], "ref-opt");
 		break;
 	case(MDOC__P):
-		PAIR_CLASS_INIT(&tag, "ref-page");
+		PAIR_CLASS_INIT(&tag[0], "ref-page");
 		break;
 	case(MDOC__Q):
-		PAIR_CLASS_INIT(&tag, "ref-corp");
+		PAIR_CLASS_INIT(&tag[0], "ref-corp");
 		break;
 	case(MDOC__R):
-		PAIR_CLASS_INIT(&tag, "ref-rep");
+		PAIR_CLASS_INIT(&tag[0], "ref-rep");
 		break;
 	case(MDOC__T):
-		PAIR_CLASS_INIT(&tag, "ref-title");
-		print_text(h, "\\(lq");
-		h->flags |= HTML_NOSPACE;
+		PAIR_CLASS_INIT(&tag[0], "ref-title");
 		break;
+	case(MDOC__U):
+		PAIR_CLASS_INIT(&tag[0], "link-ref");
+		break;
 	case(MDOC__V):
-		PAIR_CLASS_INIT(&tag, "ref-vol");
+		PAIR_CLASS_INIT(&tag[0], "ref-vol");
 		break;
 	default:
 		abort();
 		/* NOTREACHED */
 	}
 
-	print_otag(h, TAG_SPAN, 1, &tag);
+	if (MDOC__U != n->tok) {
+		print_otag(h, TAG_SPAN, 1, tag);
+		return(1);
+	}
+
+	PAIR_HREF_INIT(&tag[1], n->child->string);
+	print_otag(h, TAG_A, 2, tag);
 	return(1);
 }
 
@@ -2160,14 +2256,8 @@ static void
 mdoc__x_post(MDOC_ARGS)
 {
 
+	/* TODO: %U */
+
 	h->flags |= HTML_NOSPACE;
-	switch (n->tok) {
-	case (MDOC__T):
-		print_text(h, "\\(rq");
-		h->flags |= HTML_NOSPACE;
-		break;
-	default:
-		break;
-	}
 	print_text(h, n->next ? "," : ".");
 }