===================================================================
RCS file: /cvs/mandoc/mdoc_man.c,v
retrieving revision 1.112
retrieving revision 1.134
diff -u -p -r1.112 -r1.134
--- mandoc/mdoc_man.c	2017/05/05 13:17:55	1.112
+++ mandoc/mdoc_man.c	2020/02/20 00:29:16	1.134
@@ -1,6 +1,6 @@
-/*	$Id: mdoc_man.c,v 1.112 2017/05/05 13:17:55 schwarze Exp $ */
+/*	$Id: mdoc_man.c,v 1.134 2020/02/20 00:29:16 schwarze Exp $ */
 /*
- * Copyright (c) 2011-2017 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2011-2019 Ingo Schwarze <schwarze@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
@@ -36,7 +36,7 @@
 typedef	int	(*int_fp)(DECL_ARGS);
 typedef	void	(*void_fp)(DECL_ARGS);
 
-struct	manact {
+struct	mdoc_man_act {
 	int_fp		  cond; /* DON'T run actions */
 	int_fp		  pre; /* pre-node action */
 	void_fp		  post; /* post-node action */
@@ -73,9 +73,9 @@ static	void	  post_nm(DECL_ARGS);
 static	void	  post_percent(DECL_ARGS);
 static	void	  post_pf(DECL_ARGS);
 static	void	  post_sect(DECL_ARGS);
-static	void	  post_sp(DECL_ARGS);
 static	void	  post_vt(DECL_ARGS);
 static	int	  pre__t(DECL_ARGS);
+static	int	  pre_abort(DECL_ARGS);
 static	int	  pre_an(DECL_ARGS);
 static	int	  pre_ap(DECL_ARGS);
 static	int	  pre_aq(DECL_ARGS);
@@ -102,17 +102,19 @@ static	int	  pre_in(DECL_ARGS);
 static	int	  pre_it(DECL_ARGS);
 static	int	  pre_lk(DECL_ARGS);
 static	int	  pre_li(DECL_ARGS);
-static	void	  pre_ll(DECL_ARGS);
 static	int	  pre_nm(DECL_ARGS);
 static	int	  pre_no(DECL_ARGS);
+static	void	  pre_noarg(DECL_ARGS);
 static	int	  pre_ns(DECL_ARGS);
+static	void	  pre_onearg(DECL_ARGS);
 static	int	  pre_pp(DECL_ARGS);
 static	int	  pre_rs(DECL_ARGS);
 static	int	  pre_sm(DECL_ARGS);
-static	int	  pre_sp(DECL_ARGS);
+static	void	  pre_sp(DECL_ARGS);
 static	int	  pre_sect(DECL_ARGS);
 static	int	  pre_sy(DECL_ARGS);
 static	void	  pre_syn(const struct roff_node *);
+static	void	  pre_ta(DECL_ARGS);
 static	int	  pre_vt(DECL_ARGS);
 static	int	  pre_xr(DECL_ARGS);
 static	void	  print_word(const char *);
@@ -124,13 +126,22 @@ static	void	  print_width(const struct mdoc_bl *,
 static	void	  print_count(int *);
 static	void	  print_node(DECL_ARGS);
 
-static	const void_fp roff_manacts[ROFF_MAX] = {
-	pre_br,
-	pre_ft,
-	pre_ll,
+static const void_fp roff_man_acts[ROFF_MAX] = {
+	pre_br,		/* br */
+	pre_onearg,	/* ce */
+	pre_noarg,	/* fi */
+	pre_ft,		/* ft */
+	pre_onearg,	/* ll */
+	pre_onearg,	/* mc */
+	pre_noarg,	/* nf */
+	pre_onearg,	/* po */
+	pre_onearg,	/* rj */
+	pre_sp,		/* sp */
+	pre_ta,		/* ta */
+	pre_onearg,	/* ti */
 };
 
-static	const struct manact __manacts[MDOC_MAX - MDOC_Dd] = {
+static const struct mdoc_man_act mdoc_man_acts[MDOC_MAX - MDOC_Dd] = {
 	{ NULL, NULL, NULL, NULL, NULL }, /* Dd */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Dt */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Os */
@@ -165,7 +176,7 @@ static	const struct manact __manacts[MDOC_MAX - MDOC_D
 	{ cond_head, pre_enc, NULL, "\\- ", NULL }, /* Nd */
 	{ NULL, pre_nm, post_nm, NULL, NULL }, /* Nm */
 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Op */
-	{ NULL, pre_Ft, post_font, NULL, NULL }, /* Ot */
+	{ NULL, pre_abort, NULL, NULL, NULL }, /* Ot */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Pa */
 	{ NULL, pre_ex, NULL, NULL, NULL }, /* Rv */
 	{ NULL, NULL, NULL, NULL, NULL }, /* St */
@@ -191,22 +202,22 @@ static	const struct manact __manacts[MDOC_MAX - MDOC_D
 	{ NULL, pre_bf, post_bf, NULL, NULL }, /* Bf */
 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Bo */
 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Bq */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Bsx */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Bx */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Bsx */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Bx */
 	{ NULL, pre_skip, NULL, NULL, NULL }, /* Db */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Dc */
-	{ cond_body, pre_enc, post_enc, "\\(Lq", "\\(Rq" }, /* Do */
-	{ cond_body, pre_enc, post_enc, "\\(Lq", "\\(Rq" }, /* Dq */
+	{ cond_body, pre_enc, post_enc, "\\(lq", "\\(rq" }, /* Do */
+	{ cond_body, pre_enc, post_enc, "\\(lq", "\\(rq" }, /* Dq */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ec */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ef */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Em */
 	{ cond_body, pre_eo, post_eo, NULL, NULL }, /* Eo */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Fx */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Fx */
 	{ NULL, pre_sy, post_font, NULL, NULL }, /* Ms */
 	{ NULL, pre_no, NULL, NULL, NULL }, /* No */
 	{ NULL, pre_ns, NULL, NULL, NULL }, /* Ns */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Nx */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Ox */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Nx */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Ox */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Pc */
 	{ NULL, NULL, post_pf, NULL, NULL }, /* Pf */
 	{ cond_body, pre_enc, post_enc, "(", ")" }, /* Po */
@@ -238,7 +249,7 @@ static	const struct manact __manacts[MDOC_MAX - MDOC_D
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Fr */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ud */
 	{ NULL, NULL, post_lb, NULL, NULL }, /* Lb */
-	{ NULL, pre_pp, NULL, NULL, NULL }, /* Lp */
+	{ NULL, pre_abort, NULL, NULL, NULL }, /* Lp */
 	{ NULL, pre_lk, NULL, NULL, NULL }, /* Lk */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Mt */
 	{ cond_body, pre_enc, post_enc, "{", "}" }, /* Brq */
@@ -247,13 +258,13 @@ static	const struct manact __manacts[MDOC_MAX - MDOC_D
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %C */
 	{ NULL, pre_skip, NULL, NULL, NULL }, /* Es */
 	{ cond_body, pre_en, post_en, NULL, NULL }, /* En */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Dx */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Dx */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %Q */
-	{ NULL, pre_sp, post_sp, NULL, NULL }, /* sp */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %U */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ta */
+	{ NULL, pre_skip, NULL, NULL, NULL }, /* Tg */
 };
-static	const struct manact *const manacts = __manacts - MDOC_Dd;
+static const struct mdoc_man_act *mdoc_man_act(enum roff_tok);
 
 static	int		outflags;
 #define	MMAN_spc	(1 << 0)  /* blank character before next word */
@@ -284,6 +295,13 @@ static	struct {
 }	fontqueue;
 
 
+static const struct mdoc_man_act *
+mdoc_man_act(enum roff_tok tok)
+{
+	assert(tok >= MDOC_Dd && tok <= MDOC_MAX);
+	return mdoc_man_acts + (tok - MDOC_Dd);
+}
+
 static int
 man_strlen(const char *cp)
 {
@@ -311,6 +329,7 @@ man_strlen(const char *cp)
 		case ESCAPE_UNICODE:
 		case ESCAPE_NUMBERED:
 		case ESCAPE_SPECIAL:
+		case ESCAPE_UNDEF:
 		case ESCAPE_OVERSTRIKE:
 			if (skip)
 				skip = 0;
@@ -444,7 +463,6 @@ static void
 print_line(const char *s, int newflags)
 {
 
-	outflags &= ~MMAN_br;
 	outflags |= MMAN_nl;
 	print_word(s);
 	outflags |= newflags;
@@ -473,6 +491,7 @@ print_offs(const char *v, int keywords)
 {
 	char		  buf[24];
 	struct roffsu	  su;
+	const char	 *end;
 	int		  sz;
 
 	print_line(".RS", MMAN_Bk_susp);
@@ -484,8 +503,11 @@ print_offs(const char *v, int keywords)
 		sz = 6;
 	else if (keywords && !strcmp(v, "indent-two"))
 		sz = 12;
-	else if (a2roffsu(v, &su, SCALE_EN) > 1) {
-		if (SCALE_EN == su.unit)
+	else {
+		end = a2roffsu(v, &su, SCALE_EN);
+		if (end == NULL || *end != '\0')
+			sz = man_strlen(v);
+		else if (SCALE_EN == su.unit)
 			sz = su.scale;
 		else {
 			/*
@@ -499,8 +521,7 @@ print_offs(const char *v, int keywords)
 			outflags |= MMAN_nl;
 			return;
 		}
-	} else
-		sz = man_strlen(v);
+	}
 
 	/*
 	 * We are inside an enclosing list.
@@ -522,6 +543,7 @@ print_width(const struct mdoc_bl *bl, const struct rof
 {
 	char		  buf[24];
 	struct roffsu	  su;
+	const char	 *end;
 	int		  numeric, remain, sz, chsz;
 
 	numeric = 1;
@@ -530,15 +552,17 @@ print_width(const struct mdoc_bl *bl, const struct rof
 	/* Convert the width into a number (of characters). */
 	if (bl->width == NULL)
 		sz = (bl->type == LIST_hang) ? 6 : 0;
-	else if (a2roffsu(bl->width, &su, SCALE_MAX) > 1) {
-		if (SCALE_EN == su.unit)
+	else {
+		end = a2roffsu(bl->width, &su, SCALE_MAX);
+		if (end == NULL || *end != '\0')
+			sz = man_strlen(bl->width);
+		else if (SCALE_EN == su.unit)
 			sz = su.scale;
 		else {
 			sz = 0;
 			numeric = 0;
 		}
-	} else
-		sz = man_strlen(bl->width);
+	}
 
 	/* XXX Rough estimation, might have multiple parts. */
 	if (bl->type == LIST_enum)
@@ -582,27 +606,21 @@ print_count(int *count)
 }
 
 void
-man_man(void *arg, const struct roff_man *man)
+man_mdoc(void *arg, const struct roff_meta *mdoc)
 {
-
-	/*
-	 * Dump the keep buffer.
-	 * We're guaranteed by now that this exists (is non-NULL).
-	 * Flush stdout afterward, just in case.
-	 */
-	fputs(mparse_getkeep(man_mparse(man)), stdout);
-	fflush(stdout);
-}
-
-void
-man_mdoc(void *arg, const struct roff_man *mdoc)
-{
 	struct roff_node *n;
 
+	printf(".\\\" Automatically generated from an mdoc input file."
+	    "  Do not edit.\n");
+	for (n = mdoc->first->child; n != NULL; n = n->next) {
+		if (n->type != ROFFT_COMMENT)
+			break;
+		printf(".\\\"%s\n", n->string);
+	}
+
 	printf(".TH \"%s\" \"%s\" \"%s\" \"%s\" \"%s\"\n",
-	    mdoc->meta.title,
-	    (mdoc->meta.msec == NULL ? "" : mdoc->meta.msec),
-	    mdoc->meta.date, mdoc->meta.os, mdoc->meta.vol);
+	    mdoc->title, (mdoc->msec == NULL ? "" : mdoc->msec),
+	    mdoc->date, mdoc->os, mdoc->vol);
 
 	/* Disable hyphenation and if nroff, disable justification. */
 	printf(".nh\n.if n .ad l");
@@ -613,17 +631,17 @@ man_mdoc(void *arg, const struct roff_man *mdoc)
 		fontqueue.head = fontqueue.tail = mandoc_malloc(8);
 		*fontqueue.tail = 'R';
 	}
-	for (n = mdoc->first->child; n != NULL; n = n->next)
-		print_node(&mdoc->meta, n);
+	for (; n != NULL; n = n->next)
+		print_node(mdoc, n);
 	putchar('\n');
 }
 
 static void
 print_node(DECL_ARGS)
 {
-	const struct manact	*act;
-	struct roff_node	*sub;
-	int			 cond, do_sub;
+	const struct mdoc_man_act	*act;
+	struct roff_node		*sub;
+	int				 cond, do_sub;
 
 	if (n->flags & NODE_NOPRT)
 		return;
@@ -661,15 +679,14 @@ print_node(DECL_ARGS)
 		else if (outflags & MMAN_Sm)
 			outflags |= MMAN_spc;
 	} else if (n->tok < ROFF_MAX) {
-		(*roff_manacts[n->tok])(meta, n);
+		(*roff_man_acts[n->tok])(meta, n);
 		return;
 	} else {
-		assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
 		/*
 		 * Conditionally run the pre-node action handler for a
 		 * node.
 		 */
-		act = manacts + n->tok;
+		act = mdoc_man_act(n->tok);
 		cond = act->cond == NULL || (*act->cond)(meta, n);
 		if (cond && act->pre != NULL &&
 		    (n->end == ENDBODY_NOT || n->child != NULL))
@@ -713,11 +730,17 @@ cond_body(DECL_ARGS)
 }
 
 static int
+pre_abort(DECL_ARGS)
+{
+	abort();
+}
+
+static int
 pre_enc(DECL_ARGS)
 {
 	const char	*prefix;
 
-	prefix = manacts[n->tok].prefix;
+	prefix = mdoc_man_act(n->tok)->prefix;
 	if (NULL == prefix)
 		return 1;
 	print_word(prefix);
@@ -730,7 +753,7 @@ post_enc(DECL_ARGS)
 {
 	const char *suffix;
 
-	suffix = manacts[n->tok].suffix;
+	suffix = mdoc_man_act(n->tok)->suffix;
 	if (NULL == suffix)
 		return;
 	outflags &= ~(MMAN_spc | MMAN_nl);
@@ -755,7 +778,7 @@ static void
 post_percent(DECL_ARGS)
 {
 
-	if (pre_em == manacts[n->tok].pre)
+	if (mdoc_man_act(n->tok)->pre == pre_em)
 		font_pop();
 	if (n->next) {
 		print_word(",");
@@ -801,7 +824,7 @@ pre_sect(DECL_ARGS)
 
 	if (n->type == ROFFT_HEAD) {
 		outflags |= MMAN_sp;
-		print_block(manacts[n->tok].prefix, 0);
+		print_block(mdoc_man_act(n->tok)->prefix, 0);
 		print_word("");
 		putchar('\"');
 		outflags &= ~MMAN_spc;
@@ -917,7 +940,6 @@ post_aq(DECL_ARGS)
 static int
 pre_bd(DECL_ARGS)
 {
-
 	outflags &= ~(MMAN_PP | MMAN_sp | MMAN_br);
 
 	if (DISP_unfilled == n->norm->Bd.type ||
@@ -932,12 +954,27 @@ pre_bd(DECL_ARGS)
 static void
 post_bd(DECL_ARGS)
 {
+	enum roff_tok	 bef, now;
 
 	/* Close out this display. */
 	print_line(".RE", MMAN_nl);
-	if (DISP_unfilled == n->norm->Bd.type ||
-	    DISP_literal  == n->norm->Bd.type)
-		print_line(".fi", MMAN_nl);
+	bef = n->flags & NODE_NOFILL ? ROFF_nf : ROFF_fi;
+	if (n->last == NULL)
+		now = n->norm->Bd.type == DISP_unfilled ||
+		    n->norm->Bd.type == DISP_literal ? ROFF_nf : ROFF_fi;
+	else if (n->last->tok == ROFF_nf)
+		now = ROFF_nf;
+	else if (n->last->tok == ROFF_fi)
+		now = ROFF_fi;
+	else
+		now = n->last->flags & NODE_NOFILL ? ROFF_nf : ROFF_fi;
+	if (bef != now) {
+		outflags |= MMAN_nl;
+		print_word(".");
+		outflags &= ~MMAN_spc;
+		print_word(roff_name[bef]);
+		outflags |= MMAN_nl;
+	}
 
 	/* Maybe we are inside an enclosing list? */
 	if (NULL != n->parent->next)
@@ -981,11 +1018,11 @@ post_bf(DECL_ARGS)
 static int
 pre_bk(DECL_ARGS)
 {
-
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		return 1;
 	case ROFFT_BODY:
+	case ROFFT_ELEM:
 		outflags |= MMAN_Bk;
 		return 1;
 	default:
@@ -996,9 +1033,18 @@ pre_bk(DECL_ARGS)
 static void
 post_bk(DECL_ARGS)
 {
-
-	if (n->type == ROFFT_BODY)
+	switch (n->type) {
+	case ROFFT_ELEM:
+		while ((n = n->parent) != NULL)
+			 if (n->tok == MDOC_Bk)
+				return;
+		/* FALLTHROUGH */
+	case ROFFT_BODY:
 		outflags &= ~MMAN_Bk;
+		break;
+	default:
+		break;
+	}
 }
 
 static int
@@ -1388,7 +1434,7 @@ pre_it(DECL_ARGS)
 			if (bln->norm->Bl.type == LIST_diag)
 				print_line(".B \"", 0);
 			else
-				print_line(".R \"", 0);
+				print_line(".BR \\& \"", 0);
 			outflags &= ~MMAN_spc;
 			return 1;
 		case LIST_bullet:
@@ -1526,16 +1572,21 @@ post_lb(DECL_ARGS)
 static int
 pre_lk(DECL_ARGS)
 {
-	const struct roff_node *link, *descr;
-	int display;
+	const struct roff_node *link, *descr, *punct;
 
 	if ((link = n->child) == NULL)
 		return 0;
 
+	/* Find beginning of trailing punctuation. */
+	punct = n->last;
+	while (punct != link && punct->flags & NODE_DELIMC)
+		punct = punct->prev;
+	punct = punct->next;
+
 	/* Link text. */
-	if ((descr = link->next) != NULL && !(descr->flags & NODE_DELIMC)) {
+	if ((descr = link->next) != NULL && descr != punct) {
 		font_push('I');
-		while (descr != NULL && !(descr->flags & NODE_DELIMC)) {
+		while (descr != punct) {
 			print_word(descr->string);
 			descr = descr->next;
 		}
@@ -1544,39 +1595,36 @@ pre_lk(DECL_ARGS)
 	}
 
 	/* Link target. */
-	display = man_strlen(link->string) >= 26;
-	if (display) {
-		print_line(".RS", MMAN_Bk_susp);
-		print_word("6n");
-		outflags |= MMAN_nl;
-	}
 	font_push('B');
 	print_word(link->string);
 	font_pop();
 
 	/* Trailing punctuation. */
-	while (descr != NULL) {
-		print_word(descr->string);
-		descr = descr->next;
+	while (punct != NULL) {
+		print_word(punct->string);
+		punct = punct->next;
 	}
-	if (display)
-		print_line(".RE", MMAN_nl);
 	return 0;
 }
 
 static void
-pre_ll(DECL_ARGS)
+pre_onearg(DECL_ARGS)
 {
-	print_line(".ll", 0);
+	outflags |= MMAN_nl;
+	print_word(".");
+	outflags &= ~MMAN_spc;
+	print_word(roff_name[n->tok]);
 	if (n->child != NULL)
 		print_word(n->child->string);
 	outflags |= MMAN_nl;
+	if (n->tok == ROFF_ce)
+		for (n = n->child->next; n != NULL; n = n->next)
+			print_node(meta, n);
 }
 
 static int
 pre_li(DECL_ARGS)
 {
-
 	font_push('R');
 	return 1;
 }
@@ -1609,7 +1657,6 @@ pre_nm(DECL_ARGS)
 static void
 post_nm(DECL_ARGS)
 {
-
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		outflags &= ~MMAN_Bk;
@@ -1627,15 +1674,23 @@ post_nm(DECL_ARGS)
 static int
 pre_no(DECL_ARGS)
 {
-
 	outflags |= MMAN_spc_force;
 	return 1;
 }
 
+static void
+pre_noarg(DECL_ARGS)
+{
+	outflags |= MMAN_nl;
+	print_word(".");
+	outflags &= ~MMAN_spc;
+	print_word(roff_name[n->tok]);
+	outflags |= MMAN_nl;
+}
+
 static int
 pre_ns(DECL_ARGS)
 {
-
 	outflags &= ~MMAN_spc;
 	return 0;
 }
@@ -1694,22 +1749,17 @@ pre_sm(DECL_ARGS)
 	return 0;
 }
 
-static int
+static void
 pre_sp(DECL_ARGS)
 {
-
-	if (MMAN_PP & outflags) {
+	if (outflags & MMAN_PP) {
 		outflags &= ~MMAN_PP;
 		print_line(".PP", 0);
-	} else
+	} else {
 		print_line(".sp", 0);
-	return 1;
-}
-
-static void
-post_sp(DECL_ARGS)
-{
-
+		if (n->child != NULL)
+			print_word(n->child->string);
+	}
 	outflags |= MMAN_nl;
 }
 
@@ -1719,6 +1769,15 @@ pre_sy(DECL_ARGS)
 
 	font_push('B');
 	return 1;
+}
+
+static void
+pre_ta(DECL_ARGS)
+{
+	print_line(".ta", 0);
+	for (n = n->child; n != NULL; n = n->next)
+		print_word(n->string);
+	outflags |= MMAN_nl;
 }
 
 static int