Initial front-end formatting for -man pages.

1 files changed, 2247 insertions, 0 deletions

diff --git a/mdoc_term.c b/mdoc_term.c
new file mode 100644
index 00000000..091c79ce
--- /dev/null
+++ b/mdoc_term.c
@@ -0,0 +1,2247 @@
+/* $Id: mdoc_term.c,v 1.1 2009/03/26 14:38:11 kristaps Exp $ */
+/*
+ * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all
+ * copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+ * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+#include <sys/types.h>
+
+#include <assert.h>
+#include <ctype.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "term.h"
+#include "mdoc.h"
+
+/* FIXME: macro arguments can be escaped. */
+/* FIXME: support more offset/width tokens. */
+
+#define	TTYPE_PROG	  0
+#define	TTYPE_CMD_FLAG	  1
+#define	TTYPE_CMD_ARG	  2
+#define	TTYPE_SECTION	  3
+#define	TTYPE_FUNC_DECL	  4
+#define	TTYPE_VAR_DECL	  5
+#define	TTYPE_FUNC_TYPE	  6
+#define	TTYPE_FUNC_NAME	  7
+#define	TTYPE_FUNC_ARG	  8
+#define	TTYPE_LINK	  9
+#define	TTYPE_SSECTION	  10
+#define	TTYPE_FILE	  11
+#define	TTYPE_EMPH	  12
+#define	TTYPE_CONFIG	  13
+#define	TTYPE_CMD	  14
+#define	TTYPE_INCLUDE	  15
+#define	TTYPE_SYMB	  16
+#define	TTYPE_SYMBOL	  17
+#define	TTYPE_DIAG	  18
+#define	TTYPE_LINK_ANCHOR 19
+#define	TTYPE_LINK_TEXT	  20
+#define	TTYPE_REF_JOURNAL 21
+#define	TTYPE_LIST	  22
+#define	TTYPE_NMAX	  23
+
+const	int ttypes[TTYPE_NMAX] = {
+	TERMP_BOLD, 		/* TTYPE_PROG */
+	TERMP_BOLD,		/* TTYPE_CMD_FLAG */
+	TERMP_UNDER, 		/* TTYPE_CMD_ARG */
+	TERMP_BOLD, 		/* TTYPE_SECTION */
+	TERMP_BOLD,		/* TTYPE_FUNC_DECL */
+	TERMP_UNDER,		/* TTYPE_VAR_DECL */
+	TERMP_UNDER,		/* TTYPE_FUNC_TYPE */
+	TERMP_BOLD, 		/* TTYPE_FUNC_NAME */
+	TERMP_UNDER, 		/* TTYPE_FUNC_ARG */
+	TERMP_UNDER, 		/* TTYPE_LINK */
+	TERMP_BOLD,	 	/* TTYPE_SSECTION */
+	TERMP_UNDER, 		/* TTYPE_FILE */
+	TERMP_UNDER, 		/* TTYPE_EMPH */
+	TERMP_BOLD,	 	/* TTYPE_CONFIG */
+	TERMP_BOLD,	 	/* TTYPE_CMD */
+	TERMP_BOLD,	 	/* TTYPE_INCLUDE */
+	TERMP_BOLD,	 	/* TTYPE_SYMB */
+	TERMP_BOLD,	 	/* TTYPE_SYMBOL */
+	TERMP_BOLD,	 	/* TTYPE_DIAG */
+	TERMP_UNDER, 		/* TTYPE_LINK_ANCHOR */
+	TERMP_BOLD,	 	/* TTYPE_LINK_TEXT */
+	TERMP_UNDER,	 	/* TTYPE_REF_JOURNAL */
+	TERMP_BOLD		/* TTYPE_LIST */
+};
+
+/* XXX - clean this up. */
+
+struct	termpair {
+	struct termpair	 *ppair;
+	int		  type;
+#define	TERMPAIR_FLAG	 (1 << 0)
+	int	  	  flag;
+	size_t	  	  offset;
+	size_t	  	  rmargin;
+	int		  count;
+};
+
+#define	TERMPAIR_SETFLAG(termp, p, fl) \
+	do { \
+		assert(! (TERMPAIR_FLAG & (p)->type)); \
+		(termp)->flags |= (fl); \
+		(p)->flag = (fl); \
+		(p)->type |= TERMPAIR_FLAG; \
+	} while ( /* CONSTCOND */ 0)
+
+#define	DECL_ARGS \
+	struct termp *p, struct termpair *pair, \
+	const struct mdoc_meta *meta, \
+	const struct mdoc_node *node
+
+#define	DECL_PRE(name) \
+static	int	 	  name##_pre(DECL_ARGS)
+#define	DECL_POST(name) \
+static	void	 	  name##_post(DECL_ARGS)
+#define	DECL_PREPOST(name) \
+DECL_PRE(name); \
+DECL_POST(name);
+
+DECL_PREPOST(termp__t);
+DECL_PREPOST(termp_aq);
+DECL_PREPOST(termp_bd);
+DECL_PREPOST(termp_bq);
+DECL_PREPOST(termp_brq);
+DECL_PREPOST(termp_d1);
+DECL_PREPOST(termp_dq);
+DECL_PREPOST(termp_fd);
+DECL_PREPOST(termp_fn);
+DECL_PREPOST(termp_fo);
+DECL_PREPOST(termp_ft);
+DECL_PREPOST(termp_in);
+DECL_PREPOST(termp_it);
+DECL_PREPOST(termp_lb);
+DECL_PREPOST(termp_op);
+DECL_PREPOST(termp_pf);
+DECL_PREPOST(termp_pq);
+DECL_PREPOST(termp_qq);
+DECL_PREPOST(termp_sh);
+DECL_PREPOST(termp_ss);
+DECL_PREPOST(termp_sq);
+DECL_PREPOST(termp_vt);
+
+DECL_PRE(termp__j);
+DECL_PRE(termp_ap);
+DECL_PRE(termp_ar);
+DECL_PRE(termp_at);
+DECL_PRE(termp_bf);
+DECL_PRE(termp_bsx);
+DECL_PRE(termp_bt);
+DECL_PRE(termp_cd);
+DECL_PRE(termp_cm);
+DECL_PRE(termp_dx);
+DECL_PRE(termp_em);
+DECL_PRE(termp_ex);
+DECL_PRE(termp_fa);
+DECL_PRE(termp_fl);
+DECL_PRE(termp_fx);
+DECL_PRE(termp_ic);
+DECL_PRE(termp_lk);
+DECL_PRE(termp_ms);
+DECL_PRE(termp_mt);
+DECL_PRE(termp_nd);
+DECL_PRE(termp_nm);
+DECL_PRE(termp_ns);
+DECL_PRE(termp_nx);
+DECL_PRE(termp_ox);
+DECL_PRE(termp_pa);
+DECL_PRE(termp_pp);
+DECL_PRE(termp_rs);
+DECL_PRE(termp_rv);
+DECL_PRE(termp_sm);
+DECL_PRE(termp_st);
+DECL_PRE(termp_sx);
+DECL_PRE(termp_sy);
+DECL_PRE(termp_ud);
+DECL_PRE(termp_ux);
+DECL_PRE(termp_va);
+DECL_PRE(termp_xr);
+
+DECL_POST(termp___);
+DECL_POST(termp_bl);
+DECL_POST(termp_bx);
+
+struct	termact {
+	int	(*pre)(DECL_ARGS);
+	void	(*post)(DECL_ARGS);
+};
+
+static const struct termact termacts[MDOC_MAX] = {
+	{ NULL, NULL }, /* \" */
+	{ NULL, NULL }, /* Dd */
+	{ NULL, NULL }, /* Dt */
+	{ NULL, NULL }, /* Os */
+	{ termp_sh_pre, termp_sh_post }, /* Sh */
+	{ termp_ss_pre, termp_ss_post }, /* Ss */ 
+	{ termp_pp_pre, NULL }, /* Pp */ 
+	{ termp_d1_pre, termp_d1_post }, /* D1 */
+	{ termp_d1_pre, termp_d1_post }, /* Dl */
+	{ termp_bd_pre, termp_bd_post }, /* Bd */
+	{ NULL, NULL }, /* Ed */
+	{ NULL, termp_bl_post }, /* Bl */
+	{ NULL, NULL }, /* El */
+	{ termp_it_pre, termp_it_post }, /* It */
+	{ NULL, NULL }, /* Ad */ 
+	{ NULL, NULL }, /* An */
+	{ termp_ar_pre, NULL }, /* Ar */
+	{ termp_cd_pre, NULL }, /* Cd */
+	{ termp_cm_pre, NULL }, /* Cm */
+	{ NULL, NULL }, /* Dv */ 
+	{ NULL, NULL }, /* Er */ 
+	{ NULL, NULL }, /* Ev */ 
+	{ termp_ex_pre, NULL }, /* Ex */
+	{ termp_fa_pre, NULL }, /* Fa */ 
+	{ termp_fd_pre, termp_fd_post }, /* Fd */ 
+	{ termp_fl_pre, NULL }, /* Fl */
+	{ termp_fn_pre, termp_fn_post }, /* Fn */ 
+	{ termp_ft_pre, termp_ft_post }, /* Ft */ 
+	{ termp_ic_pre, NULL }, /* Ic */ 
+	{ termp_in_pre, termp_in_post }, /* In */ 
+	{ NULL, NULL }, /* Li */
+	{ termp_nd_pre, NULL }, /* Nd */ 
+	{ termp_nm_pre, NULL }, /* Nm */ 
+	{ termp_op_pre, termp_op_post }, /* Op */
+	{ NULL, NULL }, /* Ot */
+	{ termp_pa_pre, NULL }, /* Pa */
+	{ termp_rv_pre, NULL }, /* Rv */
+	{ termp_st_pre, NULL }, /* St */ 
+	{ termp_va_pre, NULL }, /* Va */
+	{ termp_vt_pre, termp_vt_post }, /* Vt */ 
+	{ termp_xr_pre, NULL }, /* Xr */
+	{ NULL, termp____post }, /* %A */
+	{ NULL, termp____post }, /* %B */
+	{ NULL, termp____post }, /* %D */
+	{ NULL, termp____post }, /* %I */
+	{ termp__j_pre, termp____post }, /* %J */
+	{ NULL, termp____post }, /* %N */
+	{ NULL, termp____post }, /* %O */
+	{ NULL, termp____post }, /* %P */
+	{ NULL, termp____post }, /* %R */
+	{ termp__t_pre, termp__t_post }, /* %T */
+	{ NULL, termp____post }, /* %V */
+	{ NULL, NULL }, /* Ac */
+	{ termp_aq_pre, termp_aq_post }, /* Ao */
+	{ termp_aq_pre, termp_aq_post }, /* Aq */
+	{ termp_at_pre, NULL }, /* At */
+	{ NULL, NULL }, /* Bc */
+	{ termp_bf_pre, NULL }, /* Bf */ 
+	{ termp_bq_pre, termp_bq_post }, /* Bo */
+	{ termp_bq_pre, termp_bq_post }, /* Bq */
+	{ termp_bsx_pre, NULL }, /* Bsx */
+	{ NULL, termp_bx_post }, /* Bx */
+	{ NULL, NULL }, /* Db */
+	{ NULL, NULL }, /* Dc */
+	{ termp_dq_pre, termp_dq_post }, /* Do */
+	{ termp_dq_pre, termp_dq_post }, /* Dq */
+	{ NULL, NULL }, /* Ec */
+	{ NULL, NULL }, /* Ef */
+	{ termp_em_pre, NULL }, /* Em */ 
+	{ NULL, NULL }, /* Eo */
+	{ termp_fx_pre, NULL }, /* Fx */
+	{ termp_ms_pre, NULL }, /* Ms */
+	{ NULL, NULL }, /* No */
+	{ termp_ns_pre, NULL }, /* Ns */
+	{ termp_nx_pre, NULL }, /* Nx */
+	{ termp_ox_pre, NULL }, /* Ox */
+	{ NULL, NULL }, /* Pc */
+	{ termp_pf_pre, termp_pf_post }, /* Pf */
+	{ termp_pq_pre, termp_pq_post }, /* Po */
+	{ termp_pq_pre, termp_pq_post }, /* Pq */
+	{ NULL, NULL }, /* Qc */
+	{ termp_sq_pre, termp_sq_post }, /* Ql */
+	{ termp_qq_pre, termp_qq_post }, /* Qo */
+	{ termp_qq_pre, termp_qq_post }, /* Qq */
+	{ NULL, NULL }, /* Re */
+	{ termp_rs_pre, NULL }, /* Rs */
+	{ NULL, NULL }, /* Sc */
+	{ termp_sq_pre, termp_sq_post }, /* So */
+	{ termp_sq_pre, termp_sq_post }, /* Sq */
+	{ termp_sm_pre, NULL }, /* Sm */
+	{ termp_sx_pre, NULL }, /* Sx */
+	{ termp_sy_pre, NULL }, /* Sy */
+	{ NULL, NULL }, /* Tn */
+	{ termp_ux_pre, NULL }, /* Ux */
+	{ NULL, NULL }, /* Xc */
+	{ NULL, NULL }, /* Xo */
+	{ termp_fo_pre, termp_fo_post }, /* Fo */ 
+	{ NULL, NULL }, /* Fc */ 
+	{ termp_op_pre, termp_op_post }, /* Oo */
+	{ NULL, NULL }, /* Oc */
+	{ NULL, NULL }, /* Bk */
+	{ NULL, NULL }, /* Ek */
+	{ termp_bt_pre, NULL }, /* Bt */
+	{ NULL, NULL }, /* Hf */
+	{ NULL, NULL }, /* Fr */
+	{ termp_ud_pre, NULL }, /* Ud */
+	{ termp_lb_pre, termp_lb_post }, /* Lb */
+	{ termp_ap_pre, NULL }, /* Lb */
+	{ termp_pp_pre, NULL }, /* Pp */ 
+	{ termp_lk_pre, NULL }, /* Lk */ 
+	{ termp_mt_pre, NULL }, /* Mt */ 
+	{ termp_brq_pre, termp_brq_post }, /* Brq */ 
+	{ termp_brq_pre, termp_brq_post }, /* Bro */ 
+	{ NULL, NULL }, /* Brc */ 
+	{ NULL, NULL }, /* %C */ 
+	{ NULL, NULL }, /* Es */ 
+	{ NULL, NULL }, /* En */ 
+	{ termp_dx_pre, NULL }, /* Dx */ 
+	{ NULL, NULL }, /* %Q */ 
+};
+
+static	int	  arg_hasattr(int, const struct mdoc_node *);
+static	int	  arg_getattrs(const int *, int *, size_t,
+			const struct mdoc_node *);
+static	int	  arg_getattr(int, const struct mdoc_node *);
+static	size_t	  arg_offset(const struct mdoc_argv *);
+static	size_t	  arg_width(const struct mdoc_argv *, int);
+static	int	  arg_listtype(const struct mdoc_node *);
+static	int	  fmt_block_vspace(struct termp *,
+			const struct mdoc_node *,
+			const struct mdoc_node *);
+static	int  	  print_node(DECL_ARGS);
+static	int	  print_head(struct termp *, 
+			const struct mdoc_meta *);
+static	int	  print_body(DECL_ARGS);
+static	int	  print_foot(struct termp *, 
+			const struct mdoc_meta *);
+static	void	  sanity(const struct mdoc_node *);
+
+
+int
+mdoc_run(struct termp *p, const struct mdoc *m)
+{
+
+	if ( ! print_head(p, mdoc_meta(m)))
+		return(0);
+	if ( ! print_body(p, NULL, mdoc_meta(m), mdoc_node(m)))
+		return(0);
+	return(print_foot(p, mdoc_meta(m)));
+}
+
+
+static int
+print_body(DECL_ARGS)
+{
+
+	if ( ! print_node(p, pair, meta, node))
+		return(0);
+	if ( ! node->next)
+		return(1);
+	return(print_body(p, pair, meta, node->next));
+}
+
+
+static int
+print_node(DECL_ARGS)
+{
+	int		 dochild;
+	struct termpair	 npair;
+
+	/* Some quick sanity-checking. */
+
+	sanity(node);
+
+	/* Pre-processing. */
+
+	dochild = 1;
+	npair.ppair = pair;
+	npair.type = 0;
+	npair.offset = npair.rmargin = 0;
+	npair.flag = 0;
+	npair.count = 0;
+
+	if (MDOC_TEXT != node->type) {
+		if (termacts[node->tok].pre)
+			if ( ! (*termacts[node->tok].pre)(p, &npair, meta, node))
+				dochild = 0;
+	} else /* MDOC_TEXT == node->type */
+		term_word(p, node->string);
+
+	/* Children. */
+
+	if (TERMPAIR_FLAG & npair.type)
+		p->flags |= npair.flag;
+
+	if (dochild && node->child)
+		print_body(p, &npair, meta, node->child);
+
+	if (TERMPAIR_FLAG & npair.type)
+		p->flags &= ~npair.flag;
+
+	/* Post-processing. */
+
+	if (MDOC_TEXT != node->type)
+		if (termacts[node->tok].post)
+			(*termacts[node->tok].post)(p, &npair, meta, node);
+
+	return(1);
+}
+
+
+static int
+print_foot(struct termp *p, const struct mdoc_meta *meta)
+{
+	struct tm	*tm;
+	char		*buf, *os;
+
+	if (NULL == (buf = malloc(p->rmargin)))
+		err(1, "malloc");
+	if (NULL == (os = malloc(p->rmargin)))
+		err(1, "malloc");
+
+	tm = localtime(&meta->date);
+
+#ifdef __OpenBSD__
+	if (NULL == strftime(buf, p->rmargin, "%B %d, %Y", tm))
+#else
+	if (0 == strftime(buf, p->rmargin, "%B %d, %Y", tm))
+#endif
+		err(1, "strftime");
+
+	(void)strlcpy(os, meta->os, p->rmargin);
+
+	/*
+	 * This is /slightly/ different from regular groff output
+	 * because we don't have page numbers.  Print the following:
+	 *
+	 * OS                                            MDOCDATE
+	 */
+
+	term_vspace(p);
+
+	p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
+	p->rmargin = p->maxrmargin - strlen(buf);
+	p->offset = 0;
+
+	term_word(p, os);
+	term_flushln(p);
+
+	p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
+	p->offset = p->rmargin;
+	p->rmargin = p->maxrmargin;
+	p->flags &= ~TERMP_NOBREAK;
+
+	term_word(p, buf);
+	term_flushln(p);
+
+	free(buf);
+	free(os);
+
+	return(1);
+}
+
+
+static int
+print_head(struct termp *p, const struct mdoc_meta *meta)
+{
+	char		*buf, *title;
+
+	p->rmargin = p->maxrmargin;
+	p->offset = 0;
+
+	if (NULL == (buf = malloc(p->rmargin)))
+		err(1, "malloc");
+	if (NULL == (title = malloc(p->rmargin)))
+		err(1, "malloc");
+
+	/*
+	 * The header is strange.  It has three components, which are
+	 * really two with the first duplicated.  It goes like this:
+	 *
+	 * IDENTIFIER              TITLE                   IDENTIFIER
+	 *
+	 * The IDENTIFIER is NAME(SECTION), which is the command-name
+	 * (if given, or "unknown" if not) followed by the manual page
+	 * section.  These are given in `Dt'.  The TITLE is a free-form
+	 * string depending on the manual volume.  If not specified, it
+	 * switches on the manual section.
+	 */
+
+	assert(meta->vol);
+	(void)strlcpy(buf, meta->vol, p->rmargin);
+
+	if (meta->arch) {
+		(void)strlcat(buf, " (", p->rmargin);
+		(void)strlcat(buf, meta->arch, p->rmargin);
+		(void)strlcat(buf, ")", p->rmargin);
+	}
+
+	(void)snprintf(title, p->rmargin, "%s(%d)", 
+			meta->title, meta->msec);
+
+	p->offset = 0;
+	p->rmargin = (p->maxrmargin - strlen(buf)) / 2;
+	p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
+
+	term_word(p, title);
+	term_flushln(p);
+
+	p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
+	p->offset = p->rmargin;
+	p->rmargin = p->maxrmargin - strlen(title);
+
+	term_word(p, buf);
+	term_flushln(p);
+
+	p->offset = p->rmargin;
+	p->rmargin = p->maxrmargin;
+	p->flags &= ~TERMP_NOBREAK;
+	p->flags |= TERMP_NOLPAD | TERMP_NOSPACE;
+
+	term_word(p, title);
+	term_flushln(p);
+
+	p->rmargin = p->maxrmargin;
+	p->offset = 0;
+	p->flags &= ~TERMP_NOSPACE;
+
+	free(title);
+	free(buf);
+
+	return(1);
+}
+
+
+static void
+sanity(const struct mdoc_node *n)
+{
+	char		*p;
+
+	p = "regular form violated";
+
+	switch (n->type) {
+	case (MDOC_TEXT):
+		if (n->child) 
+			errx(1, p);
+		if (NULL == n->parent) 
+			errx(1, p);
+		if (NULL == n->string)
+			errx(1, p);
+		switch (n->parent->type) {
+		case (MDOC_TEXT):
+			/* FALLTHROUGH */
+		case (MDOC_ROOT):
+			errx(1, p);
+			/* NOTREACHED */
+		default:
+			break;
+		}
+		break;
+	case (MDOC_ELEM):
+		if (NULL == n->parent)
+			errx(1, p);
+		switch (n->parent->type) {
+		case (MDOC_TAIL):
+			/* FALLTHROUGH */
+		case (MDOC_BODY):
+			/* FALLTHROUGH */
+		case (MDOC_HEAD):
+			break;
+		default:
+			errx(1, p);
+			/* NOTREACHED */
+		}
+		if (n->child) switch (n->child->type) {
+		case (MDOC_TEXT):
+			break;
+		default:
+			errx(1, p);
+			/* NOTREACHED */
+		}
+		break;
+	case (MDOC_HEAD):
+		/* FALLTHROUGH */
+	case (MDOC_BODY):
+		/* FALLTHROUGH */
+	case (MDOC_TAIL):
+		if (NULL == n->parent)
+			errx(1, p);
+		if (MDOC_BLOCK != n->parent->type)
+			errx(1, p);
+		if (n->child) switch (n->child->type) {
+		case (MDOC_BLOCK):
+			/* FALLTHROUGH */
+		case (MDOC_ELEM):
+			/* FALLTHROUGH */
+		case (MDOC_TEXT):
+			break;
+		default:
+			errx(1, p);
+			/* NOTREACHED */
+		}
+		break;
+	case (MDOC_BLOCK):
+		if (NULL == n->parent)
+			errx(1, p);
+		if (NULL == n->child)
+			errx(1, p);
+		switch (n->parent->type) {
+		case (MDOC_ROOT):
+			/* FALLTHROUGH */
+		case (MDOC_HEAD):
+			/* FALLTHROUGH */
+		case (MDOC_BODY):
+			/* FALLTHROUGH */
+		case (MDOC_TAIL):
+			break;
+		default:
+			errx(1, p);
+			/* NOTREACHED */
+		}
+		switch (n->child->type) {
+		case (MDOC_ROOT):
+			/* FALLTHROUGH */
+		case (MDOC_ELEM):
+			errx(1, p);
+			/* NOTREACHED */
+		default:
+			break;
+		}
+		break;
+	case (MDOC_ROOT):
+		if (n->parent)
+			errx(1, p);
+		if (NULL == n->child)
+			errx(1, p);
+		switch (n->child->type) {
+		case (MDOC_BLOCK):
+			break;
+		default:
+			errx(1, p);
+			/* NOTREACHED */
+		}
+		break;
+	}
+}
+
+
+static size_t
+arg_width(const struct mdoc_argv *arg, int pos)
+{
+	size_t		 v;
+	int		 i, len;
+
+	assert(pos < (int)arg->sz && pos >= 0);
+	assert(arg->value[pos]);
+	if (0 == strcmp(arg->value[pos], "indent"))
+		return(INDENT);
+	if (0 == strcmp(arg->value[pos], "indent-two"))
+		return(INDENT * 2);
+
+	if (0 == (len = (int)strlen(arg->value[pos])))
+		return(0);
+
+	for (i = 0; i < len - 1; i++) 
+		if ( ! isdigit((u_char)arg->value[pos][i]))
+			break;
+
+	if (i == len - 1) {
+		if ('n' == arg->value[pos][len - 1]) {
+			v = (size_t)atoi(arg->value[pos]);
+			return(v);
+		}
+
+	}
+	return(strlen(arg->value[pos]) + 1);
+}
+
+
+static int
+arg_listtype(const struct mdoc_node *n)
+{
+	int		 i, len;
+
+	assert(MDOC_BLOCK == n->type);
+
+	len = (int)(n->args ? n->args->argc : 0);
+
+	for (i = 0; i < len; i++) 
+		switch (n->args->argv[i].arg) {
+		case (MDOC_Bullet):
+			/* FALLTHROUGH */
+		case (MDOC_Dash):
+			/* FALLTHROUGH */
+		case (MDOC_Enum):
+			/* FALLTHROUGH */
+		case (MDOC_Hyphen):
+			/* FALLTHROUGH */
+		case (MDOC_Tag):
+			/* FALLTHROUGH */
+		case (MDOC_Inset):
+			/* FALLTHROUGH */
+		case (MDOC_Diag):
+			/* FALLTHROUGH */
+		case (MDOC_Item):
+			/* FALLTHROUGH */
+		case (MDOC_Column):
+			/* FALLTHROUGH */
+		case (MDOC_Ohang):
+			return(n->args->argv[i].arg);
+		default:
+			break;
+		}
+
+	errx(1, "list type not supported");
+	/* NOTREACHED */
+}
+
+
+static size_t
+arg_offset(const struct mdoc_argv *arg)
+{
+
+	assert(*arg->value);
+	if (0 == strcmp(*arg->value, "indent"))
+		return(INDENT);
+	if (0 == strcmp(*arg->value, "indent-two"))
+		return(INDENT * 2);
+	return(strlen(*arg->value));
+}
+
+
+static int
+arg_hasattr(int arg, const struct mdoc_node *n)
+{
+
+	return(-1 != arg_getattr(arg, n));
+}
+
+
+static int
+arg_getattr(int v, const struct mdoc_node *n)
+{
+	int		 val;
+
+	return(arg_getattrs(&v, &val, 1, n) ? val : -1);
+}
+
+
+static int
+arg_getattrs(const int *keys, int *vals, 
+		size_t sz, const struct mdoc_node *n)
+{
+	int		 i, j, k;
+
+	if (NULL == n->args)
+		return(0);
+
+	for (k = i = 0; i < (int)n->args->argc; i++) 
+		for (j = 0; j < (int)sz; j++)
+			if (n->args->argv[i].arg == keys[j]) {
+				vals[j] = i;
+				k++;
+			}
+	return(k);
+}
+
+
+/* ARGSUSED */
+static int
+fmt_block_vspace(struct termp *p, 
+		const struct mdoc_node *bl, 
+		const struct mdoc_node *node)
+{
+	const struct mdoc_node *n;
+
+	term_newln(p);
+
+	if (arg_hasattr(MDOC_Compact, bl))
+		return(1);
+
+	for (n = node; n; n = n->parent) {
+		if (MDOC_BLOCK != n->type)
+			continue;
+		if (MDOC_Ss == n->tok)
+			break;
+		if (MDOC_Sh == n->tok)
+			break;
+		if (NULL == n->prev)
+			continue;
+		term_vspace(p);
+		break;
+	}
+
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_dq_pre(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return(1);
+
+	term_word(p, "\\(lq");
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_dq_post(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return;
+
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, "\\(rq");
+}
+
+
+/* ARGSUSED */
+static int
+termp_it_pre(DECL_ARGS)
+{
+	const struct mdoc_node *bl, *n;
+	char		        buf[7];
+	int		        i, type, keys[3], vals[3];
+	size_t		        width, offset;
+
+	if (MDOC_BLOCK == node->type)
+		return(fmt_block_vspace(p, node->parent->parent, node));
+
+	bl = node->parent->parent->parent;
+
+	/* Save parent attributes. */
+
+	pair->offset = p->offset;
+	pair->rmargin = p->rmargin;
+	pair->flag = p->flags;
+
+	/* Get list width and offset. */
+
+	keys[0] = MDOC_Width;
+	keys[1] = MDOC_Offset;
+	keys[2] = MDOC_Column;
+
+	vals[0] = vals[1] = vals[2] = -1;
+
+	width = offset = 0;
+
+	(void)arg_getattrs(keys, vals, 3, bl);
+
+	type = arg_listtype(bl);
+
+	/* Calculate real width and offset. */
+
+	switch (type) {
+	case (MDOC_Column):
+		if (MDOC_BODY == node->type)
+			break;
+		for (i = 0, n = node->prev; n; n = n->prev, i++)
+			offset += arg_width 
+				(&bl->args->argv[vals[2]], i);
+		assert(i < (int)bl->args->argv[vals[2]].sz);
+		width = arg_width(&bl->args->argv[vals[2]], i);
+		if (vals[1] >= 0) 
+			offset += arg_offset(&bl->args->argv[vals[1]]);
+		break;
+	default:
+		if (vals[0] >= 0) 
+			width = arg_width(&bl->args->argv[vals[0]], 0);
+		if (vals[1] >= 0) 
+			offset = arg_offset(&bl->args->argv[vals[1]]);
+		break;
+	}
+
+	/* 
+	 * List-type can override the width in the case of fixed-head
+	 * values (bullet, dash/hyphen, enum).  Tags need a non-zero
+	 * offset.
+	 */
+
+	switch (type) {
+	case (MDOC_Bullet):
+		/* FALLTHROUGH */
+	case (MDOC_Dash):
+		/* FALLTHROUGH */
+	case (MDOC_Enum):
+		/* FALLTHROUGH */
+	case (MDOC_Hyphen):
+		if (width < 4)
+			width = 4;
+		break;
+	case (MDOC_Tag):
+		if (0 == width)
+			width = 10;
+		break;
+	default:
+		break;
+	}
+
+	/* 
+	 * Whitespace control.  Inset bodies need an initial space.
+	 */
+
+	switch (type) {
+	case (MDOC_Diag):
+		/* FALLTHROUGH */
+	case (MDOC_Inset):
+		if (MDOC_BODY == node->type) 
+			p->flags &= ~TERMP_NOSPACE;
+		else
+			p->flags |= TERMP_NOSPACE;
+		break;
+	default:
+		p->flags |= TERMP_NOSPACE;
+		break;
+	}
+
+	/*
+	 * Style flags.  Diagnostic heads need TTYPE_DIAG.
+	 */
+
+	switch (type) {
+	case (MDOC_Diag):
+		if (MDOC_HEAD == node->type)
+			p->flags |= ttypes[TTYPE_DIAG];
+		break;
+	default:
+		break;
+	}
+
+	/*
+	 * Pad and break control.  This is the tricker part.  Lists with
+	 * set right-margins for the head get TERMP_NOBREAK because, if
+	 * they overrun the margin, they wrap to the new margin.
+	 * Correspondingly, the body for these types don't left-pad, as
+	 * the head will pad out to to the right.
+	 */
+
+	switch (type) {
+	case (MDOC_Bullet):
+		/* FALLTHROUGH */
+	case (MDOC_Dash):
+		/* FALLTHROUGH */
+	case (MDOC_Enum):
+		/* FALLTHROUGH */
+	case (MDOC_Hyphen):
+		/* FALLTHROUGH */
+	case (MDOC_Tag):
+		if (MDOC_HEAD == node->type)
+			p->flags |= TERMP_NOBREAK;
+		else
+			p->flags |= TERMP_NOLPAD;
+		if (MDOC_HEAD == node->type && MDOC_Tag == type)
+			if (NULL == node->next ||
+					NULL == node->next->child)
+				p->flags |= TERMP_NONOBREAK;
+		break;
+	case (MDOC_Column):
+		if (MDOC_HEAD == node->type) {
+			assert(node->next);
+			if (MDOC_BODY == node->next->type)
+				p->flags &= ~TERMP_NOBREAK;
+			else
+				p->flags |= TERMP_NOBREAK;
+			if (node->prev) 
+				p->flags |= TERMP_NOLPAD;
+		}
+		break;
+	case (MDOC_Diag):
+		if (MDOC_HEAD == node->type)
+			p->flags |= TERMP_NOBREAK;
+		break;
+	default:
+		break;
+	}
+
+	/* 
+	 * Margin control.  Set-head-width lists have their right
+	 * margins shortened.  The body for these lists has the offset
+	 * necessarily lengthened.  Everybody gets the offset.
+	 */
+
+	p->offset += offset;
+
+	switch (type) {
+	case (MDOC_Bullet):
+		/* FALLTHROUGH */
+	case (MDOC_Dash):
+		/* FALLTHROUGH */
+	case (MDOC_Enum):
+		/* FALLTHROUGH */
+	case (MDOC_Hyphen):
+		/* FALLTHROUGH */
+	case (MDOC_Tag):
+		if (MDOC_HEAD == node->type)
+			p->rmargin = p->offset + width;
+		else 
+			p->offset += width;
+		break;
+	case (MDOC_Column):
+		p->rmargin = p->offset + width;
+		break;
+	default:
+		break;
+	}
+
+	/* 
+	 * The dash, hyphen, bullet and enum lists all have a special
+	 * HEAD character.  Print it now.
+	 */
+
+	if (MDOC_HEAD == node->type)
+		switch (type) {
+		case (MDOC_Bullet):
+			term_word(p, "\\[bu]");
+			break;
+		case (MDOC_Dash):
+			/* FALLTHROUGH */
+		case (MDOC_Hyphen):
+			term_word(p, "\\-");
+			break;
+		case (MDOC_Enum):
+			(pair->ppair->ppair->count)++;
+			(void)snprintf(buf, sizeof(buf), "%d.", 
+					pair->ppair->ppair->count);
+			term_word(p, buf);
+			break;
+		default:
+			break;
+		}
+
+	/* 
+	 * If we're not going to process our children, indicate so here.
+	 */
+
+	switch (type) {
+	case (MDOC_Bullet):
+		/* FALLTHROUGH */
+	case (MDOC_Item):
+		/* FALLTHROUGH */
+	case (MDOC_Dash):
+		/* FALLTHROUGH */
+	case (MDOC_Hyphen):
+		/* FALLTHROUGH */
+	case (MDOC_Enum):
+		if (MDOC_HEAD == node->type)
+			return(0);
+		break;
+	case (MDOC_Column):
+		if (MDOC_BODY == node->type)
+			return(0);
+		break;
+	default:
+		break;
+	}
+
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_it_post(DECL_ARGS)
+{
+	int		   type;
+
+	if (MDOC_BODY != node->type && MDOC_HEAD != node->type)
+		return;
+
+	type = arg_listtype(node->parent->parent->parent);
+
+	switch (type) {
+	case (MDOC_Diag):
+		/* FALLTHROUGH */
+	case (MDOC_Item):
+		/* FALLTHROUGH */
+	case (MDOC_Inset):
+		if (MDOC_BODY == node->type)
+			term_flushln(p);
+		break;
+	case (MDOC_Column):
+		if (MDOC_HEAD == node->type)
+			term_flushln(p);
+		break;
+	default:
+		term_flushln(p);
+		break;
+	}
+
+	p->offset = pair->offset;
+	p->rmargin = pair->rmargin;
+	p->flags = pair->flag;
+}
+
+
+/* ARGSUSED */
+static int
+termp_nm_pre(DECL_ARGS)
+{
+
+	if (SEC_SYNOPSIS == node->sec)
+		term_newln(p);
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_PROG]);
+	if (NULL == node->child)
+		term_word(p, meta->name);
+
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_fl_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_CMD_FLAG]);
+	term_word(p, "\\-");
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_ar_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_CMD_ARG]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_ns_pre(DECL_ARGS)
+{
+
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_pp_pre(DECL_ARGS)
+{
+
+	term_vspace(p);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_st_pre(DECL_ARGS)
+{
+	const char	*cp;
+
+	if (node->child && (cp = mdoc_a2st(node->child->string)))
+		term_word(p, cp);
+	return(0);
+}
+
+
+/* ARGSUSED */
+static int
+termp_rs_pre(DECL_ARGS)
+{
+
+	if (MDOC_BLOCK == node->type && node->prev)
+		term_vspace(p);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_rv_pre(DECL_ARGS)
+{
+	int		 i;
+
+	if (-1 == (i = arg_getattr(MDOC_Std, node)))
+		errx(1, "expected -std argument");
+	if (1 != node->args->argv[i].sz)
+		errx(1, "expected -std argument");
+
+	term_newln(p);
+	term_word(p, "The");
+
+	p->flags |= ttypes[TTYPE_FUNC_NAME];
+	term_word(p, *node->args->argv[i].value);
+	p->flags &= ~ttypes[TTYPE_FUNC_NAME];
+	p->flags |= TERMP_NOSPACE;
+
+       	term_word(p, "() function returns the value 0 if successful;");
+       	term_word(p, "otherwise the value -1 is returned and the");
+       	term_word(p, "global variable");
+
+	p->flags |= ttypes[TTYPE_VAR_DECL];
+	term_word(p, "errno");
+	p->flags &= ~ttypes[TTYPE_VAR_DECL];
+
+       	term_word(p, "is set to indicate the error.");
+
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_ex_pre(DECL_ARGS)
+{
+	int		 i;
+
+	if (-1 == (i = arg_getattr(MDOC_Std, node)))
+		errx(1, "expected -std argument");
+	if (1 != node->args->argv[i].sz)
+		errx(1, "expected -std argument");
+
+	term_word(p, "The");
+	p->flags |= ttypes[TTYPE_PROG];
+	term_word(p, *node->args->argv[i].value);
+	p->flags &= ~ttypes[TTYPE_PROG];
+       	term_word(p, "utility exits 0 on success, and >0 if an error occurs.");
+
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_nd_pre(DECL_ARGS)
+{
+
+	term_word(p, "\\-");
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_bl_post(DECL_ARGS)
+{
+
+	if (MDOC_BLOCK == node->type)
+		term_newln(p);
+}
+
+
+/* ARGSUSED */
+static void
+termp_op_post(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type) 
+		return;
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, "\\(rB");
+}
+
+
+/* ARGSUSED */
+static int
+termp_xr_pre(DECL_ARGS)
+{
+	const struct mdoc_node *n;
+
+	if (NULL == (n = node->child))
+		errx(1, "expected text line argument");
+	term_word(p, n->string);
+	if (NULL == (n = n->next)) 
+		return(0);
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, "(");
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, n->string);
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, ")");
+	return(0);
+}
+
+
+/* ARGSUSED */
+static int
+termp_vt_pre(DECL_ARGS)
+{
+
+	/* FIXME: this can be "type name". */
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_VAR_DECL]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_vt_post(DECL_ARGS)
+{
+
+	if (node->sec == SEC_SYNOPSIS)
+		term_vspace(p);
+}
+
+
+/* ARGSUSED */
+static int
+termp_fd_pre(DECL_ARGS)
+{
+
+	/* 
+	 * FIXME: this naming is bad.  This value is used, in general,
+	 * for the #include header or other preprocessor statement.
+	 */
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_FUNC_DECL]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_fd_post(DECL_ARGS)
+{
+
+	if (node->sec != SEC_SYNOPSIS)
+		return;
+	term_newln(p);
+	if (node->next && MDOC_Fd != node->next->tok)
+		term_vspace(p);
+}
+
+
+/* ARGSUSED */
+static int
+termp_sh_pre(DECL_ARGS)
+{
+
+	switch (node->type) {
+	case (MDOC_HEAD):
+		term_vspace(p);
+		TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_SECTION]);
+		break;
+	case (MDOC_BODY):
+		p->offset = INDENT;
+		break;
+	default:
+		break;
+	}
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_sh_post(DECL_ARGS)
+{
+
+	switch (node->type) {
+	case (MDOC_HEAD):
+		term_newln(p);
+		break;
+	case (MDOC_BODY):
+		term_newln(p);
+		p->offset = 0;
+		break;
+	default:
+		break;
+	}
+}
+
+
+/* ARGSUSED */
+static int
+termp_op_pre(DECL_ARGS)
+{
+
+	switch (node->type) {
+	case (MDOC_BODY):
+		term_word(p, "\\(lB");
+		p->flags |= TERMP_NOSPACE;
+		break;
+	default:
+		break;
+	}
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_bt_pre(DECL_ARGS)
+{
+
+	term_word(p, "is currently in beta test.");
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_lb_pre(DECL_ARGS)
+{
+	const char	*lb;
+
+	if (NULL == node->child)
+		errx(1, "expected text line argument");
+	if ((lb = mdoc_a2lib(node->child->string))) {
+		term_word(p, lb);
+		return(0);
+	}
+	term_word(p, "library");
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_lb_post(DECL_ARGS)
+{
+
+	term_newln(p);
+}
+
+
+/* ARGSUSED */
+static int
+termp_ud_pre(DECL_ARGS)
+{
+
+	term_word(p, "currently under development.");
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_d1_pre(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return(1);
+	term_newln(p);
+	p->offset += (pair->offset = INDENT);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_d1_post(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type) 
+		return;
+	term_newln(p);
+	p->offset -= pair->offset;
+}
+
+
+/* ARGSUSED */
+static int
+termp_aq_pre(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return(1);
+	term_word(p, "\\(la");
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_aq_post(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return;
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, "\\(ra");
+}
+
+
+/* ARGSUSED */
+static int
+termp_ft_pre(DECL_ARGS)
+{
+
+	if (SEC_SYNOPSIS == node->sec)
+		if (node->prev && MDOC_Fo == node->prev->tok)
+			term_vspace(p);
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_FUNC_TYPE]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_ft_post(DECL_ARGS)
+{
+
+	if (SEC_SYNOPSIS == node->sec)
+		term_newln(p);
+}
+
+
+/* ARGSUSED */
+static int
+termp_fn_pre(DECL_ARGS)
+{
+	const struct mdoc_node *n;
+
+	if (NULL == node->child)
+		errx(1, "expected text line arguments");
+
+	/* FIXME: can be "type funcname" "type varname"... */
+
+	p->flags |= ttypes[TTYPE_FUNC_NAME];
+	term_word(p, node->child->string);
+	p->flags &= ~ttypes[TTYPE_FUNC_NAME];
+
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, "(");
+
+	for (n = node->child->next; n; n = n->next) {
+		p->flags |= ttypes[TTYPE_FUNC_ARG];
+		term_word(p, n->string);
+		p->flags &= ~ttypes[TTYPE_FUNC_ARG];
+		if (n->next)
+			term_word(p, ",");
+	}
+
+	term_word(p, ")");
+
+	if (SEC_SYNOPSIS == node->sec)
+		term_word(p, ";");
+
+	return(0);
+}
+
+
+/* ARGSUSED */
+static void
+termp_fn_post(DECL_ARGS)
+{
+
+	if (node->sec == SEC_SYNOPSIS && node->next)
+		term_vspace(p);
+
+}
+
+
+/* ARGSUSED */
+static int
+termp_sx_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_LINK]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_fa_pre(DECL_ARGS)
+{
+	struct mdoc_node *n;
+
+	if (node->parent->tok != MDOC_Fo) {
+		TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_FUNC_ARG]);
+		return(1);
+	}
+
+	for (n = node->child; n; n = n->next) {
+		p->flags |= ttypes[TTYPE_FUNC_ARG];
+		term_word(p, n->string);
+		p->flags &= ~ttypes[TTYPE_FUNC_ARG];
+		if (n->next)
+			term_word(p, ",");
+	}
+
+	if (node->child && node->next && node->next->tok == MDOC_Fa)
+		term_word(p, ",");
+
+	return(0);
+}
+
+
+/* ARGSUSED */
+static int
+termp_va_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_VAR_DECL]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_bd_pre(DECL_ARGS)
+{
+	int	         i, type, ln;
+
+	/*
+	 * This is fairly tricky due primarily to crappy documentation.
+	 * If -ragged or -filled are specified, the block does nothing
+	 * but change the indentation.
+	 *
+	 * If, on the other hand, -unfilled or -literal are specified,
+	 * then the game changes.  Text is printed exactly as entered in
+	 * the display: if a macro line, a newline is appended to the
+	 * line.  Blank lines are allowed.
+	 */
+
+	if (MDOC_BLOCK == node->type)
+		return(fmt_block_vspace(p, node, node));
+	else if (MDOC_BODY != node->type)
+		return(1);
+
+	if (NULL == node->parent->args)
+		errx(1, "missing display type");
+
+	pair->offset = p->offset;
+
+	for (type = -1, i = 0; 
+			i < (int)node->parent->args->argc; i++) {
+		switch (node->parent->args->argv[i].arg) {
+		case (MDOC_Ragged):
+			/* FALLTHROUGH */
+		case (MDOC_Filled):
+			/* FALLTHROUGH */
+		case (MDOC_Unfilled):
+			/* FALLTHROUGH */
+		case (MDOC_Literal):
+			type = node->parent->args->argv[i].arg;
+			i = (int)node->parent->args->argc;
+			break;
+		default:
+			break;
+		}
+	}
+
+	if (NULL == node->parent->args)
+		errx(1, "missing display type");
+
+	i = arg_getattr(MDOC_Offset, node->parent);
+	if (-1 != i) {
+		if (1 != node->parent->args->argv[i].sz)
+			errx(1, "expected single value");
+		p->offset += arg_offset(&node->parent->args->argv[i]);
+	}
+
+	switch (type) {
+	case (MDOC_Literal):
+		/* FALLTHROUGH */
+	case (MDOC_Unfilled):
+		break;
+	default:
+		return(1);
+	}
+
+	/*
+	 * Tricky.  Iterate through all children.  If we're on a
+	 * different parse line, append a newline and then the contents.
+	 * Ew.
+	 */
+
+	p->flags |= TERMP_LITERAL;
+	ln = node->child ? node->child->line : 0;
+
+	for (node = node->child; node; node = node->next) {
+		if (ln < node->line) {
+			term_flushln(p);
+			p->flags |= TERMP_NOSPACE;
+		}
+		ln = node->line;
+		print_node(p, pair, meta, node);
+	}
+
+	return(0);
+}
+
+
+/* ARGSUSED */
+static void
+termp_bd_post(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type) 
+		return;
+
+	term_flushln(p);
+	p->flags &= ~TERMP_LITERAL;
+	p->offset = pair->offset;
+	p->flags |= TERMP_NOSPACE;
+}
+
+
+/* ARGSUSED */
+static int
+termp_qq_pre(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return(1);
+	term_word(p, "\"");
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_qq_post(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return;
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, "\"");
+}
+
+
+/* ARGSUSED */
+static int
+termp_bsx_pre(DECL_ARGS)
+{
+
+	term_word(p, "BSDI BSD/OS");
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_bx_post(DECL_ARGS)
+{
+
+	if (node->child)
+		p->flags |= TERMP_NOSPACE;
+	term_word(p, "BSD");
+}
+
+
+/* ARGSUSED */
+static int
+termp_ox_pre(DECL_ARGS)
+{
+
+	term_word(p, "OpenBSD");
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_dx_pre(DECL_ARGS)
+{
+
+	term_word(p, "DragonFly");
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_ux_pre(DECL_ARGS)
+{
+
+	term_word(p, "UNIX");
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_fx_pre(DECL_ARGS)
+{
+
+	term_word(p, "FreeBSD");
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_nx_pre(DECL_ARGS)
+{
+
+	term_word(p, "NetBSD");
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_sq_pre(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return(1);
+	term_word(p, "\\(oq");
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_sq_post(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return;
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, "\\(aq");
+}
+
+
+/* ARGSUSED */
+static int
+termp_pf_pre(DECL_ARGS)
+{
+
+	p->flags |= TERMP_IGNDELIM;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_pf_post(DECL_ARGS)
+{
+
+	p->flags &= ~TERMP_IGNDELIM;
+	p->flags |= TERMP_NOSPACE;
+}
+
+
+/* ARGSUSED */
+static int
+termp_ss_pre(DECL_ARGS)
+{
+
+	switch (node->type) {
+	case (MDOC_BLOCK):
+		term_newln(p);
+		if (node->prev)
+			term_vspace(p);
+		break;
+	case (MDOC_HEAD):
+		TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_SSECTION]);
+		p->offset = INDENT / 2;
+		break;
+	default:
+		break;
+	}
+
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_ss_post(DECL_ARGS)
+{
+
+	switch (node->type) {
+	case (MDOC_HEAD):
+		term_newln(p);
+		p->offset = INDENT;
+		break;
+	default:
+		break;
+	}
+}
+
+
+/* ARGSUSED */
+static int
+termp_pa_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_FILE]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_em_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_EMPH]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_cd_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_CONFIG]);
+	term_newln(p);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_cm_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_CMD_FLAG]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_ic_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_CMD]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_in_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_INCLUDE]);
+	term_word(p, "#include");
+	term_word(p, "<");
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_in_post(DECL_ARGS)
+{
+
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, ">");
+
+	term_newln(p);
+	if (SEC_SYNOPSIS != node->sec)
+		return;
+	if (node->next && MDOC_In != node->next->tok)
+		term_vspace(p);
+}
+
+
+/* ARGSUSED */
+static int
+termp_at_pre(DECL_ARGS)
+{
+	const char	*att;
+
+	att = NULL;
+
+	if (node->child)
+		att = mdoc_a2att(node->child->string);
+	if (NULL == att)
+		att = "AT&T UNIX";
+
+	term_word(p, att);
+	return(0);
+}
+
+
+/* ARGSUSED */
+static int
+termp_brq_pre(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return(1);
+	term_word(p, "\\(lC");
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_brq_post(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return;
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, "\\(rC");
+}
+
+
+/* ARGSUSED */
+static int
+termp_bq_pre(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return(1);
+	term_word(p, "\\(lB");
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_bq_post(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return;
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, "\\(rB");
+}
+
+
+/* ARGSUSED */
+static int
+termp_pq_pre(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return(1);
+	term_word(p, "\\&(");
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp_pq_post(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return;
+	term_word(p, ")");
+}
+
+
+/* ARGSUSED */
+static int
+termp_fo_pre(DECL_ARGS)
+{
+	const struct mdoc_node *n;
+
+	if (MDOC_BODY == node->type) {
+		term_word(p, "(");
+		p->flags |= TERMP_NOSPACE;
+		return(1);
+	} else if (MDOC_HEAD != node->type) 
+		return(1);
+
+	/* XXX - groff shows only first parameter */
+
+	p->flags |= ttypes[TTYPE_FUNC_NAME];
+	for (n = node->child; n; n = n->next) {
+		if (MDOC_TEXT != n->type)
+			errx(1, "expected text line argument");
+		term_word(p, n->string);
+	}
+	p->flags &= ~ttypes[TTYPE_FUNC_NAME];
+
+	return(0);
+}
+
+
+/* ARGSUSED */
+static void
+termp_fo_post(DECL_ARGS)
+{
+
+	if (MDOC_BODY != node->type)
+		return;
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, ")");
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, ";");
+	term_newln(p);
+}
+
+
+/* ARGSUSED */
+static int
+termp_bf_pre(DECL_ARGS)
+{
+	const struct mdoc_node	*n;
+
+	if (MDOC_HEAD == node->type) {
+		return(0);
+	} else if (MDOC_BLOCK != node->type)
+		return(1);
+
+	if (NULL == (n = node->head->child)) {
+		if (arg_hasattr(MDOC_Emphasis, node))
+			TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_EMPH]);
+		else if (arg_hasattr(MDOC_Symbolic, node))
+			TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_SYMB]);
+
+		return(1);
+	} 
+
+	if (MDOC_TEXT != n->type)
+		errx(1, "expected text line arguments");
+
+	if (0 == strcmp("Em", n->string))
+		TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_EMPH]);
+	else if (0 == strcmp("Sy", n->string))
+		TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_EMPH]);
+
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_sy_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_SYMB]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp_ms_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_SYMBOL]);
+	return(1);
+}
+
+
+
+/* ARGSUSED */
+static int
+termp_sm_pre(DECL_ARGS)
+{
+
+	if (NULL == node->child || MDOC_TEXT != node->child->type)
+		errx(1, "expected boolean line argument");
+
+	if (0 == strcmp("on", node->child->string)) {
+		p->flags &= ~TERMP_NONOSPACE;
+		p->flags &= ~TERMP_NOSPACE;
+	} else
+		p->flags |= TERMP_NONOSPACE;
+
+	return(0);
+}
+
+
+/* ARGSUSED */
+static int
+termp_ap_pre(DECL_ARGS)
+{
+
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, "\\(aq");
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp__j_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_REF_JOURNAL]);
+	return(1);
+}
+
+
+/* ARGSUSED */
+static int
+termp__t_pre(DECL_ARGS)
+{
+
+	term_word(p, "\"");
+	p->flags |= TERMP_NOSPACE;
+	return(1);
+}
+
+
+/* ARGSUSED */
+static void
+termp__t_post(DECL_ARGS)
+{
+
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, "\"");
+	termp____post(p, pair, meta, node);
+}
+
+
+/* ARGSUSED */
+static void
+termp____post(DECL_ARGS)
+{
+
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, node->next ? "," : ".");
+}
+
+
+/* ARGSUSED */
+static int
+termp_lk_pre(DECL_ARGS)
+{
+	const struct mdoc_node *n;
+
+	if (NULL == (n = node->child))
+		errx(1, "expected line argument");
+
+	p->flags |= ttypes[TTYPE_LINK_ANCHOR];
+	term_word(p, n->string);
+	p->flags &= ~ttypes[TTYPE_LINK_ANCHOR];
+	p->flags |= TERMP_NOSPACE;
+	term_word(p, ":");
+
+	p->flags |= ttypes[TTYPE_LINK_TEXT];
+	for ( ; n; n = n->next) {
+		term_word(p, n->string);
+	}
+	p->flags &= ~ttypes[TTYPE_LINK_TEXT];
+
+	return(0);
+}
+
+
+/* ARGSUSED */
+static int
+termp_mt_pre(DECL_ARGS)
+{
+
+	TERMPAIR_SETFLAG(p, pair, ttypes[TTYPE_LINK_ANCHOR]);
+	return(1);
+}
+
+