[BACK]Return to mdoc_term.c CVS log [TXT][DIR] Up to [cvsweb.bsd.lv] / mandoc

File: [cvsweb.bsd.lv] / mandoc / mdoc_term.c (download)

Revision 1.258, Wed Dec 25 21:24:12 2013 UTC (7 years, 9 months ago) by schwarze
Branch: MAIN
CVS Tags: VERSION_1_12_3
Changes since 1.257: +2 -3 lines

Oops, .Fa never breaks the output line in the middle of any of its
arguments, not even outside SYNOPSIS mode.  Quite surprising as .Fn
does break the line in the middle of its arguments outside SYNOPSIS
mode, and only doesn't do that in SYNOPSIS mode.  Wonders of groff...

/*	$Id: mdoc_term.c,v 1.258 2013/12/25 21:24:12 schwarze Exp $ */
/*
 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
 * Copyright (c) 2010, 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
 * Copyright (c) 2013 Franco Fichtner <franco@lastsummer.de>
 *
 * 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.
 */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <sys/types.h>

#include <assert.h>
#include <ctype.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "mandoc.h"
#include "out.h"
#include "term.h"
#include "mdoc.h"
#include "main.h"

struct	termpair {
	struct termpair	 *ppair;
	int		  count;
};

#define	DECL_ARGS struct termp *p, \
		  struct termpair *pair, \
	  	  const struct mdoc_meta *meta, \
		  struct mdoc_node *n

struct	termact {
	int	(*pre)(DECL_ARGS);
	void	(*post)(DECL_ARGS);
};

static	size_t	  a2width(const struct termp *, const char *);
static	size_t	  a2height(const struct termp *, const char *);
static	size_t	  a2offs(const struct termp *, const char *);

static	void	  print_bvspace(struct termp *,
			const struct mdoc_node *,
			const struct mdoc_node *);
static	void  	  print_mdoc_node(DECL_ARGS);
static	void	  print_mdoc_nodelist(DECL_ARGS);
static	void	  print_mdoc_head(struct termp *, const void *);
static	void	  print_mdoc_foot(struct termp *, const void *);
static	void	  synopsis_pre(struct termp *, 
			const struct mdoc_node *);

static	void	  termp____post(DECL_ARGS);
static	void	  termp__t_post(DECL_ARGS);
static	void	  termp_an_post(DECL_ARGS);
static	void	  termp_bd_post(DECL_ARGS);
static	void	  termp_bk_post(DECL_ARGS);
static	void	  termp_bl_post(DECL_ARGS);
static	void	  termp_fd_post(DECL_ARGS);
static	void	  termp_fo_post(DECL_ARGS);
static	void	  termp_in_post(DECL_ARGS);
static	void	  termp_it_post(DECL_ARGS);
static	void	  termp_lb_post(DECL_ARGS);
static	void	  termp_nm_post(DECL_ARGS);
static	void	  termp_pf_post(DECL_ARGS);
static	void	  termp_quote_post(DECL_ARGS);
static	void	  termp_sh_post(DECL_ARGS);
static	void	  termp_ss_post(DECL_ARGS);

static	int	  termp__a_pre(DECL_ARGS);
static	int	  termp__t_pre(DECL_ARGS);
static	int	  termp_an_pre(DECL_ARGS);
static	int	  termp_ap_pre(DECL_ARGS);
static	int	  termp_bd_pre(DECL_ARGS);
static	int	  termp_bf_pre(DECL_ARGS);
static	int	  termp_bk_pre(DECL_ARGS);
static	int	  termp_bl_pre(DECL_ARGS);
static	int	  termp_bold_pre(DECL_ARGS);
static	int	  termp_bt_pre(DECL_ARGS);
static	int	  termp_bx_pre(DECL_ARGS);
static	int	  termp_cd_pre(DECL_ARGS);
static	int	  termp_d1_pre(DECL_ARGS);
static	int	  termp_ex_pre(DECL_ARGS);
static	int	  termp_fa_pre(DECL_ARGS);
static	int	  termp_fd_pre(DECL_ARGS);
static	int	  termp_fl_pre(DECL_ARGS);
static	int	  termp_fn_pre(DECL_ARGS);
static	int	  termp_fo_pre(DECL_ARGS);
static	int	  termp_ft_pre(DECL_ARGS);
static	int	  termp_in_pre(DECL_ARGS);
static	int	  termp_it_pre(DECL_ARGS);
static	int	  termp_li_pre(DECL_ARGS);
static	int	  termp_lk_pre(DECL_ARGS);
static	int	  termp_nd_pre(DECL_ARGS);
static	int	  termp_nm_pre(DECL_ARGS);
static	int	  termp_ns_pre(DECL_ARGS);
static	int	  termp_quote_pre(DECL_ARGS);
static	int	  termp_rs_pre(DECL_ARGS);
static	int	  termp_rv_pre(DECL_ARGS);
static	int	  termp_sh_pre(DECL_ARGS);
static	int	  termp_sm_pre(DECL_ARGS);
static	int	  termp_sp_pre(DECL_ARGS);
static	int	  termp_ss_pre(DECL_ARGS);
static	int	  termp_under_pre(DECL_ARGS);
static	int	  termp_ud_pre(DECL_ARGS);
static	int	  termp_vt_pre(DECL_ARGS);
static	int	  termp_xr_pre(DECL_ARGS);
static	int	  termp_xx_pre(DECL_ARGS);

static	const struct termact termacts[MDOC_MAX] = {
	{ termp_ap_pre, NULL }, /* Ap */
	{ NULL, NULL }, /* Dd */
	{ NULL, NULL }, /* Dt */
	{ NULL, NULL }, /* Os */
	{ termp_sh_pre, termp_sh_post }, /* Sh */
	{ termp_ss_pre, termp_ss_post }, /* Ss */ 
	{ termp_sp_pre, NULL }, /* Pp */ 
	{ termp_d1_pre, termp_bl_post }, /* D1 */
	{ termp_d1_pre, termp_bl_post }, /* Dl */
	{ termp_bd_pre, termp_bd_post }, /* Bd */
	{ NULL, NULL }, /* Ed */
	{ termp_bl_pre, termp_bl_post }, /* Bl */
	{ NULL, NULL }, /* El */
	{ termp_it_pre, termp_it_post }, /* It */
	{ termp_under_pre, NULL }, /* Ad */ 
	{ termp_an_pre, termp_an_post }, /* An */
	{ termp_under_pre, NULL }, /* Ar */
	{ termp_cd_pre, NULL }, /* Cd */
	{ termp_bold_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, NULL }, /* Fn */ 
	{ termp_ft_pre, NULL }, /* Ft */ 
	{ termp_bold_pre, NULL }, /* Ic */ 
	{ termp_in_pre, termp_in_post }, /* In */ 
	{ termp_li_pre, NULL }, /* Li */
	{ termp_nd_pre, NULL }, /* Nd */ 
	{ termp_nm_pre, termp_nm_post }, /* Nm */ 
	{ termp_quote_pre, termp_quote_post }, /* Op */
	{ NULL, NULL }, /* Ot */
	{ termp_under_pre, NULL }, /* Pa */
	{ termp_rv_pre, NULL }, /* Rv */
	{ NULL, NULL }, /* St */ 
	{ termp_under_pre, NULL }, /* Va */
	{ termp_vt_pre, NULL }, /* Vt */
	{ termp_xr_pre, NULL }, /* Xr */
	{ termp__a_pre, termp____post }, /* %A */
	{ termp_under_pre, termp____post }, /* %B */
	{ NULL, termp____post }, /* %D */
	{ termp_under_pre, termp____post }, /* %I */
	{ termp_under_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_quote_pre, termp_quote_post }, /* Ao */
	{ termp_quote_pre, termp_quote_post }, /* Aq */
	{ NULL, NULL }, /* At */
	{ NULL, NULL }, /* Bc */
	{ termp_bf_pre, NULL }, /* Bf */ 
	{ termp_quote_pre, termp_quote_post }, /* Bo */
	{ termp_quote_pre, termp_quote_post }, /* Bq */
	{ termp_xx_pre, NULL }, /* Bsx */
	{ termp_bx_pre, NULL }, /* Bx */
	{ NULL, NULL }, /* Db */
	{ NULL, NULL }, /* Dc */
	{ termp_quote_pre, termp_quote_post }, /* Do */
	{ termp_quote_pre, termp_quote_post }, /* Dq */
	{ NULL, NULL }, /* Ec */ /* FIXME: no space */
	{ NULL, NULL }, /* Ef */
	{ termp_under_pre, NULL }, /* Em */ 
	{ termp_quote_pre, termp_quote_post }, /* Eo */
	{ termp_xx_pre, NULL }, /* Fx */
	{ termp_bold_pre, NULL }, /* Ms */
	{ NULL, NULL }, /* No */
	{ termp_ns_pre, NULL }, /* Ns */
	{ termp_xx_pre, NULL }, /* Nx */
	{ termp_xx_pre, NULL }, /* Ox */
	{ NULL, NULL }, /* Pc */
	{ NULL, termp_pf_post }, /* Pf */
	{ termp_quote_pre, termp_quote_post }, /* Po */
	{ termp_quote_pre, termp_quote_post }, /* Pq */
	{ NULL, NULL }, /* Qc */
	{ termp_quote_pre, termp_quote_post }, /* Ql */
	{ termp_quote_pre, termp_quote_post }, /* Qo */
	{ termp_quote_pre, termp_quote_post }, /* Qq */
	{ NULL, NULL }, /* Re */
	{ termp_rs_pre, NULL }, /* Rs */
	{ NULL, NULL }, /* Sc */
	{ termp_quote_pre, termp_quote_post }, /* So */
	{ termp_quote_pre, termp_quote_post }, /* Sq */
	{ termp_sm_pre, NULL }, /* Sm */
	{ termp_under_pre, NULL }, /* Sx */
	{ termp_bold_pre, NULL }, /* Sy */
	{ NULL, NULL }, /* Tn */
	{ termp_xx_pre, NULL }, /* Ux */
	{ NULL, NULL }, /* Xc */
	{ NULL, NULL }, /* Xo */
	{ termp_fo_pre, termp_fo_post }, /* Fo */ 
	{ NULL, NULL }, /* Fc */ 
	{ termp_quote_pre, termp_quote_post }, /* Oo */
	{ NULL, NULL }, /* Oc */
	{ termp_bk_pre, termp_bk_post }, /* Bk */
	{ NULL, NULL }, /* Ek */
	{ termp_bt_pre, NULL }, /* Bt */
	{ NULL, NULL }, /* Hf */
	{ NULL, NULL }, /* Fr */
	{ termp_ud_pre, NULL }, /* Ud */
	{ NULL, termp_lb_post }, /* Lb */
	{ termp_sp_pre, NULL }, /* Lp */ 
	{ termp_lk_pre, NULL }, /* Lk */ 
	{ termp_under_pre, NULL }, /* Mt */ 
	{ termp_quote_pre, termp_quote_post }, /* Brq */ 
	{ termp_quote_pre, termp_quote_post }, /* Bro */ 
	{ NULL, NULL }, /* Brc */ 
	{ NULL, termp____post }, /* %C */ 
	{ NULL, NULL }, /* Es */ /* TODO */
	{ NULL, NULL }, /* En */ /* TODO */
	{ termp_xx_pre, NULL }, /* Dx */ 
	{ NULL, termp____post }, /* %Q */ 
	{ termp_sp_pre, NULL }, /* br */
	{ termp_sp_pre, NULL }, /* sp */ 
	{ NULL, termp____post }, /* %U */ 
	{ NULL, NULL }, /* Ta */ 
};


void
terminal_mdoc(void *arg, const struct mdoc *mdoc)
{
	const struct mdoc_node	*n;
	const struct mdoc_meta	*meta;
	struct termp		*p;

	p = (struct termp *)arg;

	if (0 == p->defindent)
		p->defindent = 5;

	p->overstep = 0;
	p->maxrmargin = p->defrmargin;
	p->tabwidth = term_len(p, 5);

	if (NULL == p->symtab)
		p->symtab = mchars_alloc();

	n = mdoc_node(mdoc);
	meta = mdoc_meta(mdoc);

	term_begin(p, print_mdoc_head, print_mdoc_foot, meta);

	if (n->child)
		print_mdoc_nodelist(p, NULL, meta, n->child);

	term_end(p);
}


static void
print_mdoc_nodelist(DECL_ARGS)
{

	print_mdoc_node(p, pair, meta, n);
	if (n->next)
		print_mdoc_nodelist(p, pair, meta, n->next);
}


/* ARGSUSED */
static void
print_mdoc_node(DECL_ARGS)
{
	int		 chld;
	struct termpair	 npair;
	size_t		 offset, rmargin;

	chld = 1;
	offset = p->offset;
	rmargin = p->rmargin;
	n->prev_font = term_fontq(p);

	memset(&npair, 0, sizeof(struct termpair));
	npair.ppair = pair;

	/*
	 * Keeps only work until the end of a line.  If a keep was
	 * invoked in a prior line, revert it to PREKEEP.
	 */

	if (TERMP_KEEP & p->flags) {
		if (n->prev ? (n->prev->lastline != n->line) :
		    (n->parent && n->parent->line != n->line)) {
			p->flags &= ~TERMP_KEEP;
			p->flags |= TERMP_PREKEEP;
		}
	}

	/*
	 * After the keep flags have been set up, we may now
	 * produce output.  Note that some pre-handlers do so.
	 */

	switch (n->type) {
	case (MDOC_TEXT):
		if (' ' == *n->string && MDOC_LINE & n->flags)
			term_newln(p);
		if (MDOC_DELIMC & n->flags)
			p->flags |= TERMP_NOSPACE;
		term_word(p, n->string);
		if (MDOC_DELIMO & n->flags)
			p->flags |= TERMP_NOSPACE;
		break;
	case (MDOC_EQN):
		term_eqn(p, n->eqn);
		break;
	case (MDOC_TBL):
		term_tbl(p, n->span);
		break;
	default:
		if (termacts[n->tok].pre && ENDBODY_NOT == n->end)
			chld = (*termacts[n->tok].pre)
				(p, &npair, meta, n);
		break;
	}

	if (chld && n->child)
		print_mdoc_nodelist(p, &npair, meta, n->child);

	term_fontpopq(p,
	    (ENDBODY_NOT == n->end ? n : n->pending)->prev_font);

	switch (n->type) {
	case (MDOC_TEXT):
		break;
	case (MDOC_TBL):
		break;
	case (MDOC_EQN):
		break;
	default:
		if ( ! termacts[n->tok].post || MDOC_ENDED & n->flags)
			break;
		(void)(*termacts[n->tok].post)(p, &npair, meta, n);

		/*
		 * Explicit end tokens not only call the post
		 * handler, but also tell the respective block
		 * that it must not call the post handler again.
		 */
		if (ENDBODY_NOT != n->end)
			n->pending->flags |= MDOC_ENDED;

		/*
		 * End of line terminating an implicit block
		 * while an explicit block is still open.
		 * Continue the explicit block without spacing.
		 */
		if (ENDBODY_NOSPACE == n->end)
			p->flags |= TERMP_NOSPACE;
		break;
	}

	if (MDOC_EOS & n->flags)
		p->flags |= TERMP_SENTENCE;

	p->offset = offset;
	p->rmargin = rmargin;
}


static void
print_mdoc_foot(struct termp *p, const void *arg)
{
	const struct mdoc_meta *meta;

	meta = (const struct mdoc_meta *)arg;

	term_fontrepl(p, TERMFONT_NONE);

	/* 
	 * Output the footer in new-groff style, that is, three columns
	 * with the middle being the manual date and flanking columns
	 * being the operating system:
	 *
	 * SYSTEM                  DATE                    SYSTEM
	 */

	term_vspace(p);

	p->offset = 0;
	p->rmargin = (p->maxrmargin - 
			term_strlen(p, meta->date) + term_len(p, 1)) / 2;
	p->trailspace = 1;
	p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;

	term_word(p, meta->os);
	term_flushln(p);

	p->offset = p->rmargin;
	p->rmargin = p->maxrmargin - term_strlen(p, meta->os);
	p->flags |= TERMP_NOSPACE;

	term_word(p, meta->date);
	term_flushln(p);

	p->offset = p->rmargin;
	p->rmargin = p->maxrmargin;
	p->trailspace = 0;
	p->flags &= ~TERMP_NOBREAK;
	p->flags |= TERMP_NOSPACE;

	term_word(p, meta->os);
	term_flushln(p);

	p->offset = 0;
	p->rmargin = p->maxrmargin;
	p->flags = 0;
}


static void
print_mdoc_head(struct termp *p, const void *arg)
{
	char		buf[BUFSIZ], title[BUFSIZ];
	size_t		buflen, titlen;
	const struct mdoc_meta *meta;

	meta = (const struct mdoc_meta *)arg;

	/*
	 * 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.
	 */

	p->offset = 0;
	p->rmargin = p->maxrmargin;

	assert(meta->vol);
	strlcpy(buf, meta->vol, BUFSIZ);
	buflen = term_strlen(p, buf);

	if (meta->arch) {
		strlcat(buf, " (", BUFSIZ);
		strlcat(buf, meta->arch, BUFSIZ);
		strlcat(buf, ")", BUFSIZ);
	}

	snprintf(title, BUFSIZ, "%s(%s)", meta->title, meta->msec);
	titlen = term_strlen(p, title);

	p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
	p->trailspace = 1;
	p->offset = 0;
	p->rmargin = 2 * (titlen+1) + buflen < p->maxrmargin ?
	    (p->maxrmargin -
	     term_strlen(p, buf) + term_len(p, 1)) / 2 :
	    p->maxrmargin - buflen;

	term_word(p, title);
	term_flushln(p);

	p->flags |= TERMP_NOSPACE;
	p->offset = p->rmargin;
	p->rmargin = p->offset + buflen + titlen < p->maxrmargin ?
	    p->maxrmargin - titlen : p->maxrmargin;

	term_word(p, buf);
	term_flushln(p);

	p->flags &= ~TERMP_NOBREAK;
	p->trailspace = 0;
	if (p->rmargin + titlen <= p->maxrmargin) {
		p->flags |= TERMP_NOSPACE;
		p->offset = p->rmargin;
		p->rmargin = p->maxrmargin;
		term_word(p, title);
		term_flushln(p);
	}

	p->flags &= ~TERMP_NOSPACE;
	p->offset = 0;
	p->rmargin = p->maxrmargin;
}


static size_t
a2height(const struct termp *p, const char *v)
{
	struct roffsu	 su;


	assert(v);
	if ( ! a2roffsu(v, &su, SCALE_VS))
		SCALE_VS_INIT(&su, atoi(v));

	return(term_vspan(p, &su));
}


static size_t
a2width(const struct termp *p, const char *v)
{
	struct roffsu	 su;

	assert(v);
	if ( ! a2roffsu(v, &su, SCALE_MAX))
		SCALE_HS_INIT(&su, term_strlen(p, v));

	return(term_hspan(p, &su));
}


static size_t
a2offs(const struct termp *p, const char *v)
{
	struct roffsu	 su;

	if ('\0' == *v)
		return(0);
	else if (0 == strcmp(v, "left"))
		return(0);
	else if (0 == strcmp(v, "indent"))
		return(term_len(p, p->defindent + 1));
	else if (0 == strcmp(v, "indent-two"))
		return(term_len(p, (p->defindent + 1) * 2));
	else if ( ! a2roffsu(v, &su, SCALE_MAX))
		SCALE_HS_INIT(&su, term_strlen(p, v));

	return(term_hspan(p, &su));
}


/*
 * Determine how much space to print out before block elements of `It'
 * (and thus `Bl') and `Bd'.  And then go ahead and print that space,
 * too.
 */
static void
print_bvspace(struct termp *p, 
		const struct mdoc_node *bl, 
		const struct mdoc_node *n)
{
	const struct mdoc_node	*nn;

	assert(n);

	term_newln(p);

	if (MDOC_Bd == bl->tok && bl->norm->Bd.comp)
		return;
	if (MDOC_Bl == bl->tok && bl->norm->Bl.comp)
		return;

	/* Do not vspace directly after Ss/Sh. */

	for (nn = n; nn; nn = nn->parent) {
		if (MDOC_BLOCK != nn->type)
			continue;
		if (MDOC_Ss == nn->tok)
			return;
		if (MDOC_Sh == nn->tok)
			return;
		if (NULL == nn->prev)
			continue;
		break;
	}

	/* A `-column' does not assert vspace within the list. */

	if (MDOC_Bl == bl->tok && LIST_column == bl->norm->Bl.type)
		if (n->prev && MDOC_It == n->prev->tok)
			return;

	/* A `-diag' without body does not vspace. */

	if (MDOC_Bl == bl->tok && LIST_diag == bl->norm->Bl.type)
		if (n->prev && MDOC_It == n->prev->tok) {
			assert(n->prev->body);
			if (NULL == n->prev->body->child)
				return;
		}

	term_vspace(p);
}


/* ARGSUSED */
static int
termp_it_pre(DECL_ARGS)
{
	const struct mdoc_node *bl, *nn;
	char		        buf[7];
	int		        i;
	size_t		        width, offset, ncols, dcol;
	enum mdoc_list		type;

	if (MDOC_BLOCK == n->type) {
		print_bvspace(p, n->parent->parent, n);
		return(1);
	}

	bl = n->parent->parent->parent;
	type = bl->norm->Bl.type;

	/* 
	 * First calculate width and offset.  This is pretty easy unless
	 * we're a -column list, in which case all prior columns must
	 * be accounted for.
	 */

	width = offset = 0;

	if (bl->norm->Bl.offs)
		offset = a2offs(p, bl->norm->Bl.offs);

	switch (type) {
	case (LIST_column):
		if (MDOC_HEAD == n->type)
			break;

		/*
		 * Imitate groff's column handling:
		 * - For each earlier column, add its width.
		 * - For less than 5 columns, add four more blanks per
		 *   column.
		 * - For exactly 5 columns, add three more blank per
		 *   column.
		 * - For more than 5 columns, add only one column.
		 */
		ncols = bl->norm->Bl.ncols;

		/* LINTED */
		dcol = ncols < 5 ? term_len(p, 4) : 
			ncols == 5 ? term_len(p, 3) : term_len(p, 1);

		/*
		 * Calculate the offset by applying all prior MDOC_BODY,
		 * so we stop at the MDOC_HEAD (NULL == nn->prev).
		 */

		for (i = 0, nn = n->prev; 
				nn->prev && i < (int)ncols; 
				nn = nn->prev, i++)
			offset += dcol + a2width
				(p, bl->norm->Bl.cols[i]);

		/*
		 * When exceeding the declared number of columns, leave
		 * the remaining widths at 0.  This will later be
		 * adjusted to the default width of 10, or, for the last
		 * column, stretched to the right margin.
		 */
		if (i >= (int)ncols)
			break;

		/*
		 * Use the declared column widths, extended as explained
		 * in the preceding paragraph.
		 */
		width = a2width(p, bl->norm->Bl.cols[i]) + dcol;
		break;
	default:
		if (NULL == bl->norm->Bl.width)
			break;

		/* 
		 * Note: buffer the width by 2, which is groff's magic
		 * number for buffering single arguments.  See the above
		 * handling for column for how this changes.
		 */
		assert(bl->norm->Bl.width);
		width = a2width(p, bl->norm->Bl.width) + term_len(p, 2);
		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 (LIST_bullet):
		/* FALLTHROUGH */
	case (LIST_dash):
		/* FALLTHROUGH */
	case (LIST_hyphen):
		/* FALLTHROUGH */
	case (LIST_enum):
		if (width < term_len(p, 2))
			width = term_len(p, 2);
		break;
	case (LIST_hang):
		if (0 == width)
			width = term_len(p, 8);
		break;
	case (LIST_column):
		/* FALLTHROUGH */
	case (LIST_tag):
		if (0 == width)
			width = term_len(p, 10);
		break;
	default:
		break;
	}

	/* 
	 * Whitespace control.  Inset bodies need an initial space,
	 * while diagonal bodies need two.
	 */

	p->flags |= TERMP_NOSPACE;

	switch (type) {
	case (LIST_diag):
		if (MDOC_BODY == n->type)
			term_word(p, "\\ \\ ");
		break;
	case (LIST_inset):
		if (MDOC_BODY == n->type) 
			term_word(p, "\\ ");
		break;
	default:
		break;
	}

	p->flags |= TERMP_NOSPACE;

	switch (type) {
	case (LIST_diag):
		if (MDOC_HEAD == n->type)
			term_fontpush(p, TERMFONT_BOLD);
		break;
	default:
		break;
	}

	/*
	 * Pad and break control.  This is the tricky part.  These flags
	 * are documented in term_flushln() in term.c.  Note that we're
	 * going to unset all of these flags in termp_it_post() when we
	 * exit.
	 */

	switch (type) {
	case (LIST_enum):
		/*
		 * Weird special case.
		 * Very narrow enum lists actually hang.
		 */
		if (width == term_len(p, 2))
			p->flags |= TERMP_HANG;
		/* FALLTHROUGH */
	case (LIST_bullet):
		/* FALLTHROUGH */
	case (LIST_dash):
		/* FALLTHROUGH */
	case (LIST_hyphen):
		if (MDOC_HEAD != n->type)
			break;
		p->flags |= TERMP_NOBREAK;
		p->trailspace = 1;
		break;
	case (LIST_hang):
		if (MDOC_HEAD != n->type)
			break;

		/*
		 * This is ugly.  If `-hang' is specified and the body
		 * is a `Bl' or `Bd', then we want basically to nullify
		 * the "overstep" effect in term_flushln() and treat
		 * this as a `-ohang' list instead.
		 */
		if (n->next->child && 
				(MDOC_Bl == n->next->child->tok ||
				 MDOC_Bd == n->next->child->tok))
			break;

		p->flags |= TERMP_NOBREAK | TERMP_HANG;
		p->trailspace = 1;
		break;
	case (LIST_tag):
		if (MDOC_HEAD != n->type)
			break;

		p->flags |= TERMP_NOBREAK;
		p->trailspace = 2;

		if (NULL == n->next || NULL == n->next->child)
			p->flags |= TERMP_DANGLE;
		break;
	case (LIST_column):
		if (MDOC_HEAD == n->type)
			break;

		if (NULL == n->next) {
			p->flags &= ~TERMP_NOBREAK;
			p->trailspace = 0;
		} else {
			p->flags |= TERMP_NOBREAK;
			p->trailspace = 1;
		}

		break;
	case (LIST_diag):
		if (MDOC_HEAD != n->type)
			break;
		p->flags |= TERMP_NOBREAK;
		p->trailspace = 1;
		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 (LIST_hang):
		/*
		 * Same stipulation as above, regarding `-hang'.  We
		 * don't want to recalculate rmargin and offsets when
		 * using `Bd' or `Bl' within `-hang' overstep lists.
		 */
		if (MDOC_HEAD == n->type && n->next->child &&
				(MDOC_Bl == n->next->child->tok || 
				 MDOC_Bd == n->next->child->tok))
			break;
		/* FALLTHROUGH */
	case (LIST_bullet):
		/* FALLTHROUGH */
	case (LIST_dash):
		/* FALLTHROUGH */
	case (LIST_enum):
		/* FALLTHROUGH */
	case (LIST_hyphen):
		/* FALLTHROUGH */
	case (LIST_tag):
		assert(width);
		if (MDOC_HEAD == n->type)
			p->rmargin = p->offset + width;
		else 
			p->offset += width;
		break;
	case (LIST_column):
		assert(width);
		p->rmargin = p->offset + width;
		/* 
		 * XXX - this behaviour is not documented: the
		 * right-most column is filled to the right margin.
		 */
		if (MDOC_HEAD == n->type)
			break;
		if (NULL == n->next && p->rmargin < p->maxrmargin)
			p->rmargin = p->maxrmargin;
		break;
	default:
		break;
	}

	/* 
	 * The dash, hyphen, bullet and enum lists all have a special
	 * HEAD character (temporarily bold, in some cases).  
	 */

	if (MDOC_HEAD == n->type)
		switch (type) {
		case (LIST_bullet):
			term_fontpush(p, TERMFONT_BOLD);
			term_word(p, "\\[bu]");
			term_fontpop(p);
			break;
		case (LIST_dash):
			/* FALLTHROUGH */
		case (LIST_hyphen):
			term_fontpush(p, TERMFONT_BOLD);
			term_word(p, "\\(hy");
			term_fontpop(p);
			break;
		case (LIST_enum):
			(pair->ppair->ppair->count)++;
			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 (LIST_bullet):
		/* FALLTHROUGH */
	case (LIST_item):
		/* FALLTHROUGH */
	case (LIST_dash):
		/* FALLTHROUGH */
	case (LIST_hyphen):
		/* FALLTHROUGH */
	case (LIST_enum):
		if (MDOC_HEAD == n->type)
			return(0);
		break;
	case (LIST_column):
		if (MDOC_HEAD == n->type)
			return(0);
		break;
	default:
		break;
	}

	return(1);
}


/* ARGSUSED */
static void
termp_it_post(DECL_ARGS)
{
	enum mdoc_list	   type;

	if (MDOC_BLOCK == n->type)
		return;

	type = n->parent->parent->parent->norm->Bl.type;

	switch (type) {
	case (LIST_item):
		/* FALLTHROUGH */
	case (LIST_diag):
		/* FALLTHROUGH */
	case (LIST_inset):
		if (MDOC_BODY == n->type)
			term_newln(p);
		break;
	case (LIST_column):
		if (MDOC_BODY == n->type)
			term_flushln(p);
		break;
	default:
		term_newln(p);
		break;
	}

	/* 
	 * Now that our output is flushed, we can reset our tags.  Since
	 * only `It' sets these flags, we're free to assume that nobody
	 * has munged them in the meanwhile.
	 */

	p->flags &= ~TERMP_DANGLE;
	p->flags &= ~TERMP_NOBREAK;
	p->flags &= ~TERMP_HANG;
	p->trailspace = 0;
}


/* ARGSUSED */
static int
termp_nm_pre(DECL_ARGS)
{

	if (MDOC_BLOCK == n->type) {
		p->flags |= TERMP_PREKEEP;
		return(1);
	}

	if (MDOC_BODY == n->type) {
		if (NULL == n->child)
			return(0);
		p->flags |= TERMP_NOSPACE;
		p->offset += term_len(p, 1) +
		    (NULL == n->prev->child ?
		     term_strlen(p, meta->name) :
		     MDOC_TEXT == n->prev->child->type ?
		     term_strlen(p, n->prev->child->string) :
		     term_len(p, 5));
		return(1);
	}

	if (NULL == n->child && NULL == meta->name)
		return(0);

	if (MDOC_HEAD == n->type)
		synopsis_pre(p, n->parent);

	if (MDOC_HEAD == n->type && n->next->child) {
		p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
		p->trailspace = 1;
		p->rmargin = p->offset + term_len(p, 1);
		if (NULL == n->child) {
			p->rmargin += term_strlen(p, meta->name);
		} else if (MDOC_TEXT == n->child->type) {
			p->rmargin += term_strlen(p, n->child->string);
			if (n->child->next)
				p->flags |= TERMP_HANG;
		} else {
			p->rmargin += term_len(p, 5);
			p->flags |= TERMP_HANG;
		}
	}

	term_fontpush(p, TERMFONT_BOLD);
	if (NULL == n->child)
		term_word(p, meta->name);
	return(1);
}


/* ARGSUSED */
static void
termp_nm_post(DECL_ARGS)
{

	if (MDOC_BLOCK == n->type) {
		p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
	} else if (MDOC_HEAD == n->type && n->next->child) {
		term_flushln(p);
		p->flags &= ~(TERMP_NOBREAK | TERMP_HANG);
		p->trailspace = 0;
	} else if (MDOC_BODY == n->type && n->child)
		term_flushln(p);
}

		
/* ARGSUSED */
static int
termp_fl_pre(DECL_ARGS)
{

	term_fontpush(p, TERMFONT_BOLD);
	term_word(p, "\\-");

	if (n->child)
		p->flags |= TERMP_NOSPACE;
	else if (n->next && n->next->line == n->line)
		p->flags |= TERMP_NOSPACE;

	return(1);
}


/* ARGSUSED */
static int
termp__a_pre(DECL_ARGS)
{

	if (n->prev && MDOC__A == n->prev->tok)
		if (NULL == n->next || MDOC__A != n->next->tok)
			term_word(p, "and");

	return(1);
}


/* ARGSUSED */
static int
termp_an_pre(DECL_ARGS)
{

	if (NULL == n->child)
		return(1);

	/*
	 * If not in the AUTHORS section, `An -split' will cause
	 * newlines to occur before the author name.  If in the AUTHORS
	 * section, by default, the first `An' invocation is nosplit,
	 * then all subsequent ones, regardless of whether interspersed
	 * with other macros/text, are split.  -split, in this case,
	 * will override the condition of the implied first -nosplit.
	 */
	
	if (n->sec == SEC_AUTHORS) {
		if ( ! (TERMP_ANPREC & p->flags)) {
			if (TERMP_SPLIT & p->flags)
				term_newln(p);
			return(1);
		}
		if (TERMP_NOSPLIT & p->flags)
			return(1);
		term_newln(p);
		return(1);
	}

	if (TERMP_SPLIT & p->flags)
		term_newln(p);

	return(1);
}


/* ARGSUSED */
static void
termp_an_post(DECL_ARGS)
{

	if (n->child) {
		if (SEC_AUTHORS == n->sec)
			p->flags |= TERMP_ANPREC;
		return;
	}

	if (AUTH_split == n->norm->An.auth) {
		p->flags &= ~TERMP_NOSPLIT;
		p->flags |= TERMP_SPLIT;
	} else if (AUTH_nosplit == n->norm->An.auth) {
		p->flags &= ~TERMP_SPLIT;
		p->flags |= TERMP_NOSPLIT;
	}

}


/* ARGSUSED */
static int
termp_ns_pre(DECL_ARGS)
{

	if ( ! (MDOC_LINE & n->flags))
		p->flags |= TERMP_NOSPACE;
	return(1);
}


/* ARGSUSED */
static int
termp_rs_pre(DECL_ARGS)
{

	if (SEC_SEE_ALSO != n->sec)
		return(1);
	if (MDOC_BLOCK == n->type && n->prev)
		term_vspace(p);
	return(1);
}


/* ARGSUSED */
static int
termp_rv_pre(DECL_ARGS)
{
	int		 nchild;

	term_newln(p);
	term_word(p, "The");

	nchild = n->nchild;
	for (n = n->child; n; n = n->next) {
		term_fontpush(p, TERMFONT_BOLD);
		term_word(p, n->string);
		term_fontpop(p);

		p->flags |= TERMP_NOSPACE;
		term_word(p, "()");

		if (nchild > 2 && n->next) {
			p->flags |= TERMP_NOSPACE;
			term_word(p, ",");
		}

		if (n->next && NULL == n->next->next)
			term_word(p, "and");
	}

	if (nchild > 1)
		term_word(p, "functions return");
	else
		term_word(p, "function returns");

       	term_word(p, "the value 0 if successful; otherwise the value "
			"-1 is returned and the global variable");

	term_fontpush(p, TERMFONT_UNDER);
	term_word(p, "errno");
	term_fontpop(p);

       	term_word(p, "is set to indicate the error.");
	p->flags |= TERMP_SENTENCE;

	return(0);
}


/* ARGSUSED */
static int
termp_ex_pre(DECL_ARGS)
{
	int		 nchild;

	term_newln(p);
	term_word(p, "The");

	nchild = n->nchild;
	for (n = n->child; n; n = n->next) {
		term_fontpush(p, TERMFONT_BOLD);
		term_word(p, n->string);
		term_fontpop(p);

		if (nchild > 2 && n->next) {
			p->flags |= TERMP_NOSPACE;
			term_word(p, ",");
		}

		if (n->next && NULL == n->next->next)
			term_word(p, "and");
	}

	if (nchild > 1)
		term_word(p, "utilities exit");
	else
		term_word(p, "utility exits");

       	term_word(p, "0 on success, and >0 if an error occurs.");

	p->flags |= TERMP_SENTENCE;
	return(0);
}


/* ARGSUSED */
static int
termp_nd_pre(DECL_ARGS)
{

	if (MDOC_BODY != n->type)
		return(1);

#if defined(__OpenBSD__) || defined(__linux__)
	term_word(p, "\\(en");
#else
	term_word(p, "\\(em");
#endif
	return(1);
}


/* ARGSUSED */
static int
termp_bl_pre(DECL_ARGS)
{

	return(MDOC_HEAD != n->type);
}


/* ARGSUSED */
static void
termp_bl_post(DECL_ARGS)
{

	if (MDOC_BLOCK == n->type)
		term_newln(p);
}

/* ARGSUSED */
static int
termp_xr_pre(DECL_ARGS)
{

	if (NULL == (n = n->child))
		return(0);

	assert(MDOC_TEXT == n->type);
	term_word(p, n->string);

	if (NULL == (n = n->next)) 
		return(0);

	p->flags |= TERMP_NOSPACE;
	term_word(p, "(");
	p->flags |= TERMP_NOSPACE;

	assert(MDOC_TEXT == n->type);
	term_word(p, n->string);

	p->flags |= TERMP_NOSPACE;
	term_word(p, ")");

	return(0);
}

/*
 * This decides how to assert whitespace before any of the SYNOPSIS set
 * of macros (which, as in the case of Ft/Fo and Ft/Fn, may contain
 * macro combos).
 */
static void
synopsis_pre(struct termp *p, const struct mdoc_node *n)
{
	/* 
	 * Obviously, if we're not in a SYNOPSIS or no prior macros
	 * exist, do nothing.
	 */
	if (NULL == n->prev || ! (MDOC_SYNPRETTY & n->flags))
		return;

	/*
	 * If we're the second in a pair of like elements, emit our
	 * newline and return.  UNLESS we're `Fo', `Fn', `Fn', in which
	 * case we soldier on.
	 */
	if (n->prev->tok == n->tok && 
			MDOC_Ft != n->tok && 
			MDOC_Fo != n->tok && 
			MDOC_Fn != n->tok) {
		term_newln(p);
		return;
	}

	/*
	 * If we're one of the SYNOPSIS set and non-like pair-wise after
	 * another (or Fn/Fo, which we've let slip through) then assert
	 * vertical space, else only newline and move on.
	 */
	switch (n->prev->tok) {
	case (MDOC_Fd):
		/* FALLTHROUGH */
	case (MDOC_Fn):
		/* FALLTHROUGH */
	case (MDOC_Fo):
		/* FALLTHROUGH */
	case (MDOC_In):
		/* FALLTHROUGH */
	case (MDOC_Vt):
		term_vspace(p);
		break;
	case (MDOC_Ft):
		if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
			term_vspace(p);
			break;
		}
		/* FALLTHROUGH */
	default:
		term_newln(p);
		break;
	}
}


static int
termp_vt_pre(DECL_ARGS)
{

	if (MDOC_ELEM == n->type) {
		synopsis_pre(p, n);
		return(termp_under_pre(p, pair, meta, n));
	} else if (MDOC_BLOCK == n->type) {
		synopsis_pre(p, n);
		return(1);
	} else if (MDOC_HEAD == n->type)
		return(0);

	return(termp_under_pre(p, pair, meta, n));
}


/* ARGSUSED */
static int
termp_bold_pre(DECL_ARGS)
{

	term_fontpush(p, TERMFONT_BOLD);
	return(1);
}


/* ARGSUSED */
static int
termp_fd_pre(DECL_ARGS)
{

	synopsis_pre(p, n);
	return(termp_bold_pre(p, pair, meta, n));
}


/* ARGSUSED */
static void
termp_fd_post(DECL_ARGS)
{

	term_newln(p);
}


/* ARGSUSED */
static int
termp_sh_pre(DECL_ARGS)
{

	/* No vspace between consecutive `Sh' calls. */

	switch (n->type) {
	case (MDOC_BLOCK):
		if (n->prev && MDOC_Sh == n->prev->tok)
			if (NULL == n->prev->body->child)
				break;
		term_vspace(p);
		break;
	case (MDOC_HEAD):
		term_fontpush(p, TERMFONT_BOLD);
		break;
	case (MDOC_BODY):
		p->offset = term_len(p, p->defindent);
		if (SEC_AUTHORS == n->sec)
			p->flags &= ~(TERMP_SPLIT|TERMP_NOSPLIT);
		break;
	default:
		break;
	}
	return(1);
}


/* ARGSUSED */
static void
termp_sh_post(DECL_ARGS)
{

	switch (n->type) {
	case (MDOC_HEAD):
		term_newln(p);
		break;
	case (MDOC_BODY):
		term_newln(p);
		p->offset = 0;
		break;
	default:
		break;
	}
}


/* ARGSUSED */
static int
termp_bt_pre(DECL_ARGS)
{

	term_word(p, "is currently in beta test.");
	p->flags |= TERMP_SENTENCE;
	return(0);
}


/* ARGSUSED */
static void
termp_lb_post(DECL_ARGS)
{

	if (SEC_LIBRARY == n->sec && MDOC_LINE & n->flags)
		term_newln(p);
}


/* ARGSUSED */
static int
termp_ud_pre(DECL_ARGS)
{

	term_word(p, "currently under development.");
	p->flags |= TERMP_SENTENCE;
	return(0);
}


/* ARGSUSED */
static int
termp_d1_pre(DECL_ARGS)
{

	if (MDOC_BLOCK != n->type)
		return(1);
	term_newln(p);
	p->offset += term_len(p, p->defindent + 1);
	return(1);
}


/* ARGSUSED */
static int
termp_ft_pre(DECL_ARGS)
{

	/* NB: MDOC_LINE does not effect this! */
	synopsis_pre(p, n);
	term_fontpush(p, TERMFONT_UNDER);
	return(1);
}


/* ARGSUSED */
static int
termp_fn_pre(DECL_ARGS)
{
	size_t		 rmargin = 0;
	int		 pretty;

	pretty = MDOC_SYNPRETTY & n->flags;

	synopsis_pre(p, n);

	if (NULL == (n = n->child))
		return(0);

	if (pretty) {
		rmargin = p->rmargin;
		p->rmargin = p->offset + term_len(p, 4);
		p->flags |= TERMP_NOBREAK | TERMP_HANG;
	}

	assert(MDOC_TEXT == n->type);
	term_fontpush(p, TERMFONT_BOLD);
	term_word(p, n->string);
	term_fontpop(p);

	if (pretty) {
		term_flushln(p);
		p->flags &= ~(TERMP_NOBREAK | TERMP_HANG);
		p->offset = p->rmargin;
		p->rmargin = rmargin;
	}

	p->flags |= TERMP_NOSPACE;
	term_word(p, "(");
	p->flags |= TERMP_NOSPACE;

	for (n = n->next; n; n = n->next) {
		assert(MDOC_TEXT == n->type);
		term_fontpush(p, TERMFONT_UNDER);
		if (pretty)
			p->flags |= TERMP_NBRWORD;
		term_word(p, n->string);
		term_fontpop(p);

		if (n->next) {
			p->flags |= TERMP_NOSPACE;
			term_word(p, ",");
		}
	}

	p->flags |= TERMP_NOSPACE;
	term_word(p, ")");

	if (pretty) {
		p->flags |= TERMP_NOSPACE;
		term_word(p, ";");
		term_flushln(p);
	}

	return(0);
}


/* ARGSUSED */
static int
termp_fa_pre(DECL_ARGS)
{
	const struct mdoc_node	*nn;

	if (n->parent->tok != MDOC_Fo) {
		term_fontpush(p, TERMFONT_UNDER);
		return(1);
	}

	for (nn = n->child; nn; nn = nn->next) {
		term_fontpush(p, TERMFONT_UNDER);
		p->flags |= TERMP_NBRWORD;
		term_word(p, nn->string);
		term_fontpop(p);

		if (nn->next || (n->next && n->next->tok == MDOC_Fa)) {
			p->flags |= TERMP_NOSPACE;
			term_word(p, ",");
		}
	}

	return(0);
}


/* ARGSUSED */
static int
termp_bd_pre(DECL_ARGS)
{
	size_t			 tabwidth, rm, rmax;
	struct mdoc_node	*nn;

	if (MDOC_BLOCK == n->type) {
		print_bvspace(p, n, n);
		return(1);
	} else if (MDOC_HEAD == n->type)
		return(0);

	if (n->norm->Bd.offs)
		p->offset += a2offs(p, n->norm->Bd.offs);

	/*
	 * If -ragged or -filled are specified, the block does nothing
	 * but change the indentation.  If -unfilled or -literal are
	 * specified, text is printed exactly as entered in the display:
	 * for macro lines, a newline is appended to the line.  Blank
	 * lines are allowed.
	 */
	
	if (DISP_literal != n->norm->Bd.type && 
			DISP_unfilled != n->norm->Bd.type)
		return(1);

	tabwidth = p->tabwidth;
	if (DISP_literal == n->norm->Bd.type)
		p->tabwidth = term_len(p, 8);

	rm = p->rmargin;
	rmax = p->maxrmargin;
	p->rmargin = p->maxrmargin = TERM_MAXMARGIN;

	for (nn = n->child; nn; nn = nn->next) {
		print_mdoc_node(p, pair, meta, nn);
		/*
		 * If the printed node flushes its own line, then we
		 * needn't do it here as well.  This is hacky, but the
		 * notion of selective eoln whitespace is pretty dumb
		 * anyway, so don't sweat it.
		 */
		switch (nn->tok) {
		case (MDOC_Sm):
			/* FALLTHROUGH */
		case (MDOC_br):
			/* FALLTHROUGH */
		case (MDOC_sp):
			/* FALLTHROUGH */
		case (MDOC_Bl):
			/* FALLTHROUGH */
		case (MDOC_D1):
			/* FALLTHROUGH */
		case (MDOC_Dl):
			/* FALLTHROUGH */
		case (MDOC_Lp):
			/* FALLTHROUGH */
		case (MDOC_Pp):
			continue;
		default:
			break;
		}
		if (nn->next && nn->next->line == nn->line)
			continue;
		term_flushln(p);
		p->flags |= TERMP_NOSPACE;
	}

	p->tabwidth = tabwidth;
	p->rmargin = rm;
	p->maxrmargin = rmax;
	return(0);
}


/* ARGSUSED */
static void
termp_bd_post(DECL_ARGS)
{
	size_t		 rm, rmax;

	if (MDOC_BODY != n->type) 
		return;

	rm = p->rmargin;
	rmax = p->maxrmargin;

	if (DISP_literal == n->norm->Bd.type || 
			DISP_unfilled == n->norm->Bd.type)
		p->rmargin = p->maxrmargin = TERM_MAXMARGIN;

	p->flags |= TERMP_NOSPACE;
	term_newln(p);

	p->rmargin = rm;
	p->maxrmargin = rmax;
}


/* ARGSUSED */
static int
termp_bx_pre(DECL_ARGS)
{

	if (NULL != (n = n->child)) {
		term_word(p, n->string);
		p->flags |= TERMP_NOSPACE;
		term_word(p, "BSD");
	} else {
		term_word(p, "BSD");
		return(0);
	}

	if (NULL != (n = n->next)) {
		p->flags |= TERMP_NOSPACE;
		term_word(p, "-");
		p->flags |= TERMP_NOSPACE;
		term_word(p, n->string);
	}

	return(0);
}


/* ARGSUSED */
static int
termp_xx_pre(DECL_ARGS)
{
	const char	*pp;
	int		 flags;

	pp = NULL;
	switch (n->tok) {
	case (MDOC_Bsx):
		pp = "BSD/OS";
		break;
	case (MDOC_Dx):
		pp = "DragonFly";
		break;
	case (MDOC_Fx):
		pp = "FreeBSD";
		break;
	case (MDOC_Nx):
		pp = "NetBSD";
		break;
	case (MDOC_Ox):
		pp = "OpenBSD";
		break;
	case (MDOC_Ux):
		pp = "UNIX";
		break;
	default:
		abort();
		/* NOTREACHED */
	}

	term_word(p, pp);
	if (n->child) {
		flags = p->flags;
		p->flags |= TERMP_KEEP;
		term_word(p, n->child->string);
		p->flags = flags;
	}
	return(0);
}


/* ARGSUSED */
static void
termp_pf_post(DECL_ARGS)
{

	p->flags |= TERMP_NOSPACE;
}


/* ARGSUSED */
static int
termp_ss_pre(DECL_ARGS)
{

	switch (n->type) {
	case (MDOC_BLOCK):
		term_newln(p);
		if (n->prev)
			term_vspace(p);
		break;
	case (MDOC_HEAD):
		term_fontpush(p, TERMFONT_BOLD);
		p->offset = term_len(p, (p->defindent+1)/2);
		break;
	default:
		break;
	}

	return(1);
}


/* ARGSUSED */
static void
termp_ss_post(DECL_ARGS)
{

	if (MDOC_HEAD == n->type)
		term_newln(p);
}


/* ARGSUSED */
static int
termp_cd_pre(DECL_ARGS)
{

	synopsis_pre(p, n);
	term_fontpush(p, TERMFONT_BOLD);
	return(1);
}


/* ARGSUSED */
static int
termp_in_pre(DECL_ARGS)
{

	synopsis_pre(p, n);

	if (MDOC_SYNPRETTY & n->flags && MDOC_LINE & n->flags) {
		term_fontpush(p, TERMFONT_BOLD);
		term_word(p, "#include");
		term_word(p, "<");
	} else {
		term_word(p, "<");
		term_fontpush(p, TERMFONT_UNDER);
	}

	p->flags |= TERMP_NOSPACE;
	return(1);
}


/* ARGSUSED */
static void
termp_in_post(DECL_ARGS)
{

	if (MDOC_SYNPRETTY & n->flags)
		term_fontpush(p, TERMFONT_BOLD);

	p->flags |= TERMP_NOSPACE;
	term_word(p, ">");

	if (MDOC_SYNPRETTY & n->flags)
		term_fontpop(p);
}


/* ARGSUSED */
static int
termp_sp_pre(DECL_ARGS)
{
	size_t		 i, len;

	switch (n->tok) {
	case (MDOC_sp):
		len = n->child ? a2height(p, n->child->string) : 1;
		break;
	case (MDOC_br):
		len = 0;
		break;
	default:
		len = 1;
		break;
	}

	if (0 == len)
		term_newln(p);
	for (i = 0; i < len; i++)
		term_vspace(p);

	return(0);
}


/* ARGSUSED */
static int
termp_quote_pre(DECL_ARGS)
{

	if (MDOC_BODY != n->type && MDOC_ELEM != n->type)
		return(1);

	switch (n->tok) {
	case (MDOC_Ao):
		/* FALLTHROUGH */
	case (MDOC_Aq):
		term_word(p, "<");
		break;
	case (MDOC_Bro):
		/* FALLTHROUGH */
	case (MDOC_Brq):
		term_word(p, "{");
		break;
	case (MDOC_Oo):
		/* FALLTHROUGH */
	case (MDOC_Op):
		/* FALLTHROUGH */
	case (MDOC_Bo):
		/* FALLTHROUGH */
	case (MDOC_Bq):
		term_word(p, "[");
		break;
	case (MDOC_Do):
		/* FALLTHROUGH */
	case (MDOC_Dq):
		term_word(p, "\\(lq");
		break;
	case (MDOC_Eo):
		break;
	case (MDOC_Po):
		/* FALLTHROUGH */
	case (MDOC_Pq):
		term_word(p, "(");
		break;
	case (MDOC__T):
		/* FALLTHROUGH */
	case (MDOC_Qo):
		/* FALLTHROUGH */
	case (MDOC_Qq):
		term_word(p, "\"");
		break;
	case (MDOC_Ql):
		/* FALLTHROUGH */
	case (MDOC_So):
		/* FALLTHROUGH */
	case (MDOC_Sq):
		term_word(p, "\\(oq");
		break;
	default:
		abort();
		/* NOTREACHED */
	}

	p->flags |= TERMP_NOSPACE;
	return(1);
}


/* ARGSUSED */
static void
termp_quote_post(DECL_ARGS)
{

	if (MDOC_BODY != n->type && MDOC_ELEM != n->type)
		return;

	p->flags |= TERMP_NOSPACE;

	switch (n->tok) {
	case (MDOC_Ao):
		/* FALLTHROUGH */
	case (MDOC_Aq):
		term_word(p, ">");
		break;
	case (MDOC_Bro):
		/* FALLTHROUGH */
	case (MDOC_Brq):
		term_word(p, "}");
		break;
	case (MDOC_Oo):
		/* FALLTHROUGH */
	case (MDOC_Op):
		/* FALLTHROUGH */
	case (MDOC_Bo):
		/* FALLTHROUGH */
	case (MDOC_Bq):
		term_word(p, "]");
		break;
	case (MDOC_Do):
		/* FALLTHROUGH */
	case (MDOC_Dq):
		term_word(p, "\\(rq");
		break;
	case (MDOC_Eo):
		break;
	case (MDOC_Po):
		/* FALLTHROUGH */
	case (MDOC_Pq):
		term_word(p, ")");
		break;
	case (MDOC__T):
		/* FALLTHROUGH */
	case (MDOC_Qo):
		/* FALLTHROUGH */
	case (MDOC_Qq):
		term_word(p, "\"");
		break;
	case (MDOC_Ql):
		/* FALLTHROUGH */
	case (MDOC_So):
		/* FALLTHROUGH */
	case (MDOC_Sq):
		term_word(p, "\\(cq");
		break;
	default:
		abort();
		/* NOTREACHED */
	}
}


/* ARGSUSED */
static int
termp_fo_pre(DECL_ARGS)
{
	size_t		 rmargin = 0;
	int		 pretty;

	pretty = MDOC_SYNPRETTY & n->flags;

	if (MDOC_BLOCK == n->type) {
		synopsis_pre(p, n);
		return(1);
	} else if (MDOC_BODY == n->type) {
		if (pretty) {
			rmargin = p->rmargin;
			p->rmargin = p->offset + term_len(p, 4);
			p->flags |= TERMP_NOBREAK | TERMP_HANG;
		}
		p->flags |= TERMP_NOSPACE;
		term_word(p, "(");
		p->flags |= TERMP_NOSPACE;
		if (pretty) {
			term_flushln(p);
			p->flags &= ~(TERMP_NOBREAK | TERMP_HANG);
			p->offset = p->rmargin;
			p->rmargin = rmargin;
		}
		return(1);
	}

	if (NULL == n->child)
		return(0);

	/* XXX: we drop non-initial arguments as per groff. */

	assert(n->child->string);
	term_fontpush(p, TERMFONT_BOLD);
	term_word(p, n->child->string);
	return(0);
}


/* ARGSUSED */
static void
termp_fo_post(DECL_ARGS)
{

	if (MDOC_BODY != n->type) 
		return;

	p->flags |= TERMP_NOSPACE;
	term_word(p, ")");

	if (MDOC_SYNPRETTY & n->flags) {
		p->flags |= TERMP_NOSPACE;
		term_word(p, ";");
		term_flushln(p);
	}
}


/* ARGSUSED */
static int
termp_bf_pre(DECL_ARGS)
{

	if (MDOC_HEAD == n->type)
		return(0);
	else if (MDOC_BODY != n->type)
		return(1);

	if (FONT_Em == n->norm->Bf.font) 
		term_fontpush(p, TERMFONT_UNDER);
	else if (FONT_Sy == n->norm->Bf.font) 
		term_fontpush(p, TERMFONT_BOLD);
	else 
		term_fontpush(p, TERMFONT_NONE);

	return(1);
}


/* ARGSUSED */
static int
termp_sm_pre(DECL_ARGS)
{

	assert(n->child && MDOC_TEXT == n->child->type);
	if (0 == strcmp("on", n->child->string)) {
		if (p->col)
			p->flags &= ~TERMP_NOSPACE;
		p->flags &= ~TERMP_NONOSPACE;
	} else
		p->flags |= TERMP_NONOSPACE;

	return(0);
}


/* ARGSUSED */
static int
termp_ap_pre(DECL_ARGS)
{

	p->flags |= TERMP_NOSPACE;
	term_word(p, "'");
	p->flags |= TERMP_NOSPACE;
	return(1);
}


/* ARGSUSED */
static void
termp____post(DECL_ARGS)
{

	/*
	 * Handle lists of authors.  In general, print each followed by
	 * a comma.  Don't print the comma if there are only two
	 * authors.
	 */
	if (MDOC__A == n->tok && n->next && MDOC__A == n->next->tok)
		if (NULL == n->next->next || MDOC__A != n->next->next->tok)
			if (NULL == n->prev || MDOC__A != n->prev->tok)
				return;

	/* TODO: %U. */

	if (NULL == n->parent || MDOC_Rs != n->parent->tok)
		return;

	p->flags |= TERMP_NOSPACE;
	if (NULL == n->next) {
		term_word(p, ".");
		p->flags |= TERMP_SENTENCE;
	} else
		term_word(p, ",");
}


/* ARGSUSED */
static int
termp_li_pre(DECL_ARGS)
{

	term_fontpush(p, TERMFONT_NONE);
	return(1);
}


/* ARGSUSED */
static int
termp_lk_pre(DECL_ARGS)
{
	const struct mdoc_node *link, *descr;

	if (NULL == (link = n->child))
		return(0);

	if (NULL != (descr = link->next)) {
		term_fontpush(p, TERMFONT_UNDER);
		while (NULL != descr) {
			term_word(p, descr->string);
			descr = descr->next;
		}
		p->flags |= TERMP_NOSPACE;
		term_word(p, ":");
		term_fontpop(p);
	}

	term_fontpush(p, TERMFONT_BOLD);
	term_word(p, link->string);
	term_fontpop(p);

	return(0);
}


/* ARGSUSED */
static int
termp_bk_pre(DECL_ARGS)
{

	switch (n->type) {
	case (MDOC_BLOCK):
		break;
	case (MDOC_HEAD):
		return(0);
	case (MDOC_BODY):
		if (n->parent->args || 0 == n->prev->nchild)
			p->flags |= TERMP_PREKEEP;
		break;
	default:
		abort();
		/* NOTREACHED */
	}

	return(1);
}


/* ARGSUSED */
static void
termp_bk_post(DECL_ARGS)
{

	if (MDOC_BODY == n->type)
		p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
}

/* ARGSUSED */
static void
termp__t_post(DECL_ARGS)
{

	/*
	 * If we're in an `Rs' and there's a journal present, then quote
	 * us instead of underlining us (for disambiguation).
	 */
	if (n->parent && MDOC_Rs == n->parent->tok &&
			n->parent->norm->Rs.quote_T)
		termp_quote_post(p, pair, meta, n);

	termp____post(p, pair, meta, n);
}

/* ARGSUSED */
static int
termp__t_pre(DECL_ARGS)
{

	/*
	 * If we're in an `Rs' and there's a journal present, then quote
	 * us instead of underlining us (for disambiguation).
	 */
	if (n->parent && MDOC_Rs == n->parent->tok &&
			n->parent->norm->Rs.quote_T)
		return(termp_quote_pre(p, pair, meta, n));

	term_fontpush(p, TERMFONT_UNDER);
	return(1);
}

/* ARGSUSED */
static int
termp_under_pre(DECL_ARGS)
{

	term_fontpush(p, TERMFONT_UNDER);
	return(1);
}