Implement the obsolete macros .En .Es .Fr .Ot for backward compatibility,

since this is hardly more complicated than explicitly ignoring them
as we did in the past.  Of course, do not use them!

12 files changed, 173 insertions, 55 deletions

diff --git a/libmdoc.h b/libmdoc.h
index 3f5e13dd..417948c3 100644
--- a/libmdoc.h
+++ b/libmdoc.h
@@ -41,6 +41,7 @@ struct	mdoc {
 	enum mdoc_next	  next; /* where to put the next node */
 	struct mdoc_node *last; /* the last node parsed */
 	struct mdoc_node *first; /* the first node parsed */
+	struct mdoc_node *last_es; /* the most recent Es node */
 	struct mdoc_meta  meta; /* document meta-data */
 	enum mdoc_sec	  lastnamed;
 	enum mdoc_sec	  lastsec;
diff --git a/mandoc.h b/mandoc.h
index d438421b..97138567 100644
--- a/mandoc.h
+++ b/mandoc.h
@@ -71,7 +71,7 @@ enum	mandocerr {
 	MANDOCERR_SEC_MSEC, /* unexpected section: title for ... only */
 
 	/* related to macros and nesting */
-	MANDOCERR_MACROOBS, /* skipping obsolete macro */
+	MANDOCERR_MACRO_OBS, /* obsolete macro: macro */
 	MANDOCERR_IGNPAR, /* skipping paragraph macro */
 	MANDOCERR_MOVEPAR, /* moving paragraph macro out of list */
 	MANDOCERR_IGNNS, /* skipping no-space macro */
diff --git a/mdoc.7 b/mdoc.7
index 401ffff9..90b866ad 100644
--- a/mdoc.7
+++ b/mdoc.7
@@ -1487,8 +1487,14 @@ See also
 and
 .Sx \&Sy .
 .Ss \&En
-This macro is obsolete and ignored by
-.Xr mandoc 1 .
+This macro is obsolete.
+Use
+.Sx \&Eo
+or any of the other enclosure macros.
+.Pp
+It encloses its argument in the delimiters specified by the last
+.Sx \&Es
+macro.
 .Ss \&Eo
 An arbitrary enclosure.
 Its syntax is as follows:
@@ -1514,8 +1520,14 @@ See also
 .Sx \&Dv
 for general constants.
 .Ss \&Es
-This macro is obsolete and ignored by
-.Xr mandoc 1 .
+This macro is obsolete.
+Use
+.Sx \&Eo
+or any of the other enclosure macros.
+.Pp
+It takes two arguments, defining the delimiters to be used by subsequent
+.Sx \&En
+macros.
 .Ss \&Ev
 Environmental variables such as those specified in
 .Xr environ 7 .
@@ -1695,13 +1707,10 @@ See also
 and
 .Sx \&Ft .
 .Ss \&Fr
-This macro is obsolete and ignored by
-.Xr mandoc 1 .
-.Pp
-It was used to show function return values.
-The syntax was:
+This macro is obsolete.
+No replacement markup is needed.
 .Pp
-.Dl Pf . Sx \&Fr Ar value
+It was used to show numerical function return values in an italic font.
 .Ss \&Ft
 A function type.
 Its syntax is as follows:
@@ -2114,8 +2123,12 @@ See also
 and
 .Sx \&Dt .
 .Ss \&Ot
-This macro is obsolete and ignored by
-.Xr mandoc 1 .
+This macro is obsolete.
+Use
+.Sx \&Ft
+instead; with
+.Xr mandoc 1 ,
+both have the same effect.
 .Pp
 Historical
 .Nm
@@ -2890,6 +2903,7 @@ end of the line.
 .It Sx \&D1  Ta    \&No     Ta    \&Yes
 .It Sx \&Dl  Ta    \&No     Ta    Yes
 .It Sx \&Dq  Ta    Yes      Ta    Yes
+.It Sx \&En  Ta    Yes      Ta    Yes
 .It Sx \&Op  Ta    Yes      Ta    Yes
 .It Sx \&Pq  Ta    Yes      Ta    Yes
 .It Sx \&Ql  Ta    Yes      Ta    Yes
@@ -2967,16 +2981,15 @@ then the macro accepts an arbitrary number of arguments.
 .It Sx \&Dv  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Dx  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Em  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&En  Ta    \&No     Ta    \&No     Ta    0
 .It Sx \&Er  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Es  Ta    \&No     Ta    \&No     Ta    0
+.It Sx \&Es  Ta    Yes      Ta    Yes      Ta    2
 .It Sx \&Ev  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Ex  Ta    \&No     Ta    \&No     Ta    n
 .It Sx \&Fa  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Fd  Ta    \&No     Ta    \&No     Ta    >0
 .It Sx \&Fl  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Fn  Ta    Yes      Ta    Yes      Ta    >0
-.It Sx \&Fr  Ta    \&No     Ta    \&No     Ta    n
+.It Sx \&Fr  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Ft  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Fx  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Hf  Ta    \&No     Ta    \&No     Ta    n
@@ -2993,7 +3006,7 @@ then the macro accepts an arbitrary number of arguments.
 .It Sx \&Ns  Ta    Yes      Ta    Yes      Ta    0
 .It Sx \&Nx  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Os  Ta    \&No     Ta    \&No     Ta    n
-.It Sx \&Ot  Ta    \&No     Ta    \&No     Ta    n
+.It Sx \&Ot  Ta    Yes      Ta    Yes      Ta    >0
 .It Sx \&Ox  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Pa  Ta    Yes      Ta    Yes      Ta    n
 .It Sx \&Pf  Ta    Yes      Ta    Yes      Ta    1
diff --git a/mdoc.c b/mdoc.c
index 8f7ae1d0..1dfe8f51 100644
--- a/mdoc.c
+++ b/mdoc.c
@@ -516,6 +516,8 @@ mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
 		/* FALLTHROUGH */
 	case MDOC_Bl:
 		/* FALLTHROUGH */
+	case MDOC_En:
+		/* FALLTHROUGH */
 	case MDOC_Rs:
 		p->norm = mandoc_calloc(1, sizeof(union mdoc_data));
 		break;
diff --git a/mdoc.h b/mdoc.h
index cd86a4f8..43ab3b5c 100644
--- a/mdoc.h
+++ b/mdoc.h
@@ -338,6 +338,7 @@ union	mdoc_data {
 	struct mdoc_bd	  Bd;
 	struct mdoc_bf	  Bf;
 	struct mdoc_bl	  Bl;
+	struct mdoc_node *Es;
 	struct mdoc_rs	  Rs;
 };
 
diff --git a/mdoc_argv.c b/mdoc_argv.c
index c35c4157..7e3b1fe1 100644
--- a/mdoc_argv.c
+++ b/mdoc_argv.c
@@ -179,7 +179,7 @@ static	const struct mdocarg mdocargs[MDOC_MAX] = {
 	{ ARGSFL_NONE, NULL }, /* Nd */
 	{ ARGSFL_DELIM, NULL }, /* Nm */
 	{ ARGSFL_DELIM, NULL }, /* Op */
-	{ ARGSFL_NONE, NULL }, /* Ot */
+	{ ARGSFL_DELIM, NULL }, /* Ot */
 	{ ARGSFL_DELIM, NULL }, /* Pa */
 	{ ARGSFL_NONE, args_Ex }, /* Rv */
 	{ ARGSFL_DELIM, NULL }, /* St */
@@ -249,7 +249,7 @@ static	const struct mdocarg mdocargs[MDOC_MAX] = {
 	{ ARGSFL_NONE, NULL }, /* Ek */
 	{ ARGSFL_NONE, NULL }, /* Bt */
 	{ ARGSFL_NONE, NULL }, /* Hf */
-	{ ARGSFL_NONE, NULL }, /* Fr */
+	{ ARGSFL_DELIM, NULL }, /* Fr */
 	{ ARGSFL_NONE, NULL }, /* Ud */
 	{ ARGSFL_DELIM, NULL }, /* Lb */
 	{ ARGSFL_NONE, NULL }, /* Lp */
@@ -260,7 +260,7 @@ static	const struct mdocarg mdocargs[MDOC_MAX] = {
 	{ ARGSFL_DELIM, NULL }, /* Brc */
 	{ ARGSFL_NONE, NULL }, /* %C */
 	{ ARGSFL_NONE, NULL }, /* Es */
-	{ ARGSFL_NONE, NULL }, /* En */
+	{ ARGSFL_DELIM, NULL }, /* En */
 	{ ARGSFL_DELIM, NULL }, /* Dx */
 	{ ARGSFL_NONE, NULL }, /* %Q */
 	{ ARGSFL_NONE, NULL }, /* br */
diff --git a/mdoc_html.c b/mdoc_html.c
index 023cf748..30c0132d 100644
--- a/mdoc_html.c
+++ b/mdoc_html.c
@@ -97,7 +97,6 @@ static	int		  mdoc_it_pre(MDOC_ARGS);
 static	int		  mdoc_lb_pre(MDOC_ARGS);
 static	int		  mdoc_li_pre(MDOC_ARGS);
 static	int		  mdoc_lk_pre(MDOC_ARGS);
-static	int		  mdoc_ll_pre(MDOC_ARGS);
 static	int		  mdoc_mt_pre(MDOC_ARGS);
 static	int		  mdoc_ms_pre(MDOC_ARGS);
 static	int		  mdoc_nd_pre(MDOC_ARGS);
@@ -111,6 +110,7 @@ static	int		  mdoc_quote_pre(MDOC_ARGS);
 static	int		  mdoc_rs_pre(MDOC_ARGS);
 static	int		  mdoc_rv_pre(MDOC_ARGS);
 static	int		  mdoc_sh_pre(MDOC_ARGS);
+static	int		  mdoc_skip_pre(MDOC_ARGS);
 static	int		  mdoc_sm_pre(MDOC_ARGS);
 static	int		  mdoc_sp_pre(MDOC_ARGS);
 static	int		  mdoc_ss_pre(MDOC_ARGS);
@@ -157,7 +157,7 @@ static	const struct htmlmdoc mdocs[MDOC_MAX] = {
 	{mdoc_nd_pre, NULL}, /* Nd */
 	{mdoc_nm_pre, NULL}, /* Nm */
 	{mdoc_quote_pre, mdoc_quote_post}, /* Op */
-	{NULL, NULL}, /* Ot */
+	{mdoc_ft_pre, NULL}, /* Ot */
 	{mdoc_pa_pre, NULL}, /* Pa */
 	{mdoc_rv_pre, NULL}, /* Rv */
 	{NULL, NULL}, /* St */
@@ -227,7 +227,7 @@ static	const struct htmlmdoc mdocs[MDOC_MAX] = {
 	{NULL, NULL}, /* Ek */
 	{mdoc_bt_pre, NULL}, /* Bt */
 	{NULL, NULL}, /* Hf */
-	{NULL, NULL}, /* Fr */
+	{mdoc_em_pre, NULL}, /* Fr */
 	{mdoc_ud_pre, NULL}, /* Ud */
 	{mdoc_lb_pre, NULL}, /* Lb */
 	{mdoc_pp_pre, NULL}, /* Lp */
@@ -237,15 +237,15 @@ static	const struct htmlmdoc mdocs[MDOC_MAX] = {
 	{mdoc_quote_pre, mdoc_quote_post}, /* Bro */
 	{NULL, NULL}, /* Brc */
 	{mdoc__x_pre, mdoc__x_post}, /* %C */
-	{NULL, NULL}, /* Es */  /* TODO */
-	{NULL, NULL}, /* En */  /* TODO */
+	{mdoc_skip_pre, NULL}, /* Es */
+	{mdoc_quote_pre, mdoc_quote_post}, /* En */
 	{mdoc_xx_pre, NULL}, /* Dx */
 	{mdoc__x_pre, mdoc__x_post}, /* %Q */
 	{mdoc_sp_pre, NULL}, /* br */
 	{mdoc_sp_pre, NULL}, /* sp */
 	{mdoc__x_pre, mdoc__x_post}, /* %U */
 	{NULL, NULL}, /* Ta */
-	{mdoc_ll_pre, NULL}, /* ll */
+	{mdoc_skip_pre, NULL}, /* ll */
 };
 
 static	const char * const lists[LIST_MAX] = {
@@ -1545,7 +1545,7 @@ mdoc_sm_pre(MDOC_ARGS)
 }
 
 static int
-mdoc_ll_pre(MDOC_ARGS)
+mdoc_skip_pre(MDOC_ARGS)
 {
 
 	return(0);
@@ -2085,6 +2085,12 @@ mdoc_quote_pre(MDOC_ARGS)
 		PAIR_CLASS_INIT(&tag, "opt");
 		print_otag(h, TAG_SPAN, 1, &tag);
 		break;
+	case MDOC_En:
+		if (NULL == n->norm->Es ||
+		    NULL == n->norm->Es->child)
+			return(1);
+		print_text(h, n->norm->Es->child->string);
+		break;
 	case MDOC_Eo:
 		break;
 	case MDOC_Do:
@@ -2128,7 +2134,8 @@ mdoc_quote_post(MDOC_ARGS)
 	if (MDOC_BODY != n->type)
 		return;
 
-	h->flags |= HTML_NOSPACE;
+	if (MDOC_En != n->tok)
+		h->flags |= HTML_NOSPACE;
 
 	switch (n->tok) {
 	case MDOC_Ao:
@@ -2150,6 +2157,14 @@ mdoc_quote_post(MDOC_ARGS)
 	case MDOC_Bq:
 		print_text(h, "\\(rB");
 		break;
+	case MDOC_En:
+		if (NULL != n->norm->Es &&
+		    NULL != n->norm->Es->child &&
+		    NULL != n->norm->Es->child->next) {
+			h->flags |= HTML_NOSPACE;
+			print_text(h, n->norm->Es->child->next->string);
+		}
+		break;
 	case MDOC_Eo:
 		break;
 	case MDOC_Qo:
diff --git a/mdoc_macro.c b/mdoc_macro.c
index 47b84287..b891df79 100644
--- a/mdoc_macro.c
+++ b/mdoc_macro.c
@@ -48,7 +48,6 @@ static	int		ctx_synopsis(MACRO_PROT_ARGS);
 static	int		in_line_eoln(MACRO_PROT_ARGS);
 static	int		in_line_argn(MACRO_PROT_ARGS);
 static	int		in_line(MACRO_PROT_ARGS);
-static	int		obsolete(MACRO_PROT_ARGS);
 static	int		phrase_ta(MACRO_PROT_ARGS);
 
 static	int		dword(struct mdoc *, int, int, const char *,
@@ -104,7 +103,7 @@ const	struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
 	{ blk_full, MDOC_JOIN }, /* Nd */
 	{ ctx_synopsis, MDOC_CALLABLE | MDOC_PARSED }, /* Nm */
 	{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED }, /* Op */
-	{ obsolete, 0 }, /* Ot */
+	{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Ot */
 	{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Pa */
 	{ in_line_eoln, 0 }, /* Rv */
 	{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* St */
@@ -191,7 +190,7 @@ const	struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
 	{ blk_exp_close, MDOC_EXPLICIT | MDOC_JOIN }, /* Ek */
 	{ in_line_eoln, 0 }, /* Bt */
 	{ in_line_eoln, 0 }, /* Hf */
-	{ obsolete, 0 }, /* Fr */
+	{ in_line, MDOC_CALLABLE | MDOC_PARSED }, /* Fr */
 	{ in_line_eoln, 0 }, /* Ud */
 	{ in_line, 0 }, /* Lb */
 	{ in_line_eoln, 0 }, /* Lp */
@@ -203,8 +202,8 @@ const	struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
 	{ blk_exp_close, MDOC_CALLABLE | MDOC_PARSED |
 			 MDOC_EXPLICIT | MDOC_JOIN }, /* Brc */
 	{ in_line_eoln, MDOC_JOIN }, /* %C */
-	{ obsolete, 0 }, /* Es */
-	{ obsolete, 0 }, /* En */
+	{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Es */
+	{ blk_part_imp, MDOC_CALLABLE | MDOC_PARSED | MDOC_JOIN }, /* En */
 	{ in_line_argn, MDOC_CALLABLE | MDOC_PARSED }, /* Dx */
 	{ in_line_eoln, MDOC_JOIN }, /* %Q */
 	{ in_line_eoln, 0 }, /* br */
@@ -1528,6 +1527,8 @@ in_line_argn(MACRO_PROT_ARGS)
 		break;
 	case MDOC_Bx:
 		/* FALLTHROUGH */
+	case MDOC_Es:
+		/* FALLTHROUGH */
 	case MDOC_Xr:
 		maxargs = 2;
 		break;
@@ -1715,14 +1716,6 @@ ctx_synopsis(MACRO_PROT_ARGS)
 	return(blk_part_imp(mdoc, tok, line, ppos, pos, buf));
 }
 
-static int
-obsolete(MACRO_PROT_ARGS)
-{
-
-	mdoc_pmsg(mdoc, line, ppos, MANDOCERR_MACROOBS);
-	return(1);
-}
-
 /*
  * Phrases occur within `Bl -column' entries, separated by `Ta' or tabs.
  * They're unusual because they're basically free-form text until a
diff --git a/mdoc_man.c b/mdoc_man.c
index 6483cce9..8e81a1fb 100644
--- a/mdoc_man.c
+++ b/mdoc_man.c
@@ -51,6 +51,7 @@ static	void	  post_bf(DECL_ARGS);
 static	void	  post_bk(DECL_ARGS);
 static	void	  post_bl(DECL_ARGS);
 static	void	  post_dl(DECL_ARGS);
+static	void	  post_en(DECL_ARGS);
 static	void	  post_enc(DECL_ARGS);
 static	void	  post_eo(DECL_ARGS);
 static	void	  post_fa(DECL_ARGS);
@@ -78,8 +79,10 @@ static	int	  pre_bl(DECL_ARGS);
 static	int	  pre_br(DECL_ARGS);
 static	int	  pre_bx(DECL_ARGS);
 static	int	  pre_dl(DECL_ARGS);
+static	int	  pre_en(DECL_ARGS);
 static	int	  pre_enc(DECL_ARGS);
 static	int	  pre_em(DECL_ARGS);
+static	int	  pre_es(DECL_ARGS);
 static	int	  pre_fa(DECL_ARGS);
 static	int	  pre_fd(DECL_ARGS);
 static	int	  pre_fl(DECL_ARGS);
@@ -150,7 +153,7 @@ static	const struct manact manacts[MDOC_MAX + 1] = {
 	{ cond_head, pre_enc, NULL, "\\- ", NULL }, /* Nd */
 	{ NULL, pre_nm, post_nm, NULL, NULL }, /* Nm */
 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Op */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Ot */
+	{ NULL, pre_ft, post_font, NULL, NULL }, /* Ot */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Pa */
 	{ NULL, pre_enc, post_enc, "The \\fB",
 		"\\fP\nfunction returns the value 0 if successful;\n"
@@ -224,7 +227,7 @@ static	const struct manact manacts[MDOC_MAX + 1] = {
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ek */
 	{ NULL, pre_ux, NULL, "is currently in beta test.", NULL }, /* Bt */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Hf */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Fr */
+	{ NULL, pre_em, post_font, NULL, NULL }, /* Fr */
 	{ NULL, pre_ux, NULL, "currently under development.", NULL }, /* Ud */
 	{ NULL, NULL, post_lb, NULL, NULL }, /* Lb */
 	{ NULL, pre_pp, NULL, NULL, NULL }, /* Lp */
@@ -234,8 +237,8 @@ static	const struct manact manacts[MDOC_MAX + 1] = {
 	{ cond_body, pre_enc, post_enc, "{", "}" }, /* Bro */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Brc */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %C */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Es */
-	{ NULL, NULL, NULL, NULL, NULL }, /* En */
+	{ NULL, pre_es, NULL, NULL, NULL }, /* Es */
+	{ cond_body, pre_en, post_en, NULL, NULL }, /* En */
 	{ NULL, pre_ux, NULL, "DragonFly", NULL }, /* Dx */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %Q */
 	{ NULL, pre_br, NULL, NULL, NULL }, /* br */
@@ -1035,6 +1038,33 @@ pre_em(DECL_ARGS)
 	return(1);
 }
 
+static int
+pre_en(DECL_ARGS)
+{
+
+	if (NULL == n->norm->Es ||
+	    NULL == n->norm->Es->child)
+		return(1);
+
+	print_word(n->norm->Es->child->string);
+	outflags &= ~MMAN_spc;
+	return(1);
+}
+
+static void
+post_en(DECL_ARGS)
+{
+
+	if (NULL == n->norm->Es ||
+	    NULL == n->norm->Es->child ||
+	    NULL == n->norm->Es->child->next)
+		return;
+
+	outflags &= ~MMAN_spc;
+	print_word(n->norm->Es->child->next->string);
+	return;
+}
+
 static void
 post_eo(DECL_ARGS)
 {
@@ -1044,6 +1074,13 @@ post_eo(DECL_ARGS)
 }
 
 static int
+pre_es(DECL_ARGS)
+{
+
+	return(0);
+}
+
+static int
 pre_fa(DECL_ARGS)
 {
 	int	 am_Fa;
diff --git a/mdoc_term.c b/mdoc_term.c
index 280c0aaf..98eafa4f 100644
--- a/mdoc_term.c
+++ b/mdoc_term.c
@@ -95,6 +95,7 @@ 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_es_pre(DECL_ARGS);
 static	int	  termp_ex_pre(DECL_ARGS);
 static	int	  termp_fa_pre(DECL_ARGS);
 static	int	  termp_fd_pre(DECL_ARGS);
@@ -158,7 +159,7 @@ static	const struct termact termacts[MDOC_MAX] = {
 	{ termp_nd_pre, NULL }, /* Nd */
 	{ termp_nm_pre, termp_nm_post }, /* Nm */
 	{ termp_quote_pre, termp_quote_post }, /* Op */
-	{ NULL, NULL }, /* Ot */
+	{ termp_ft_pre, NULL }, /* Ot */
 	{ termp_under_pre, NULL }, /* Pa */
 	{ termp_rv_pre, NULL }, /* Rv */
 	{ NULL, NULL }, /* St */
@@ -228,7 +229,7 @@ static	const struct termact termacts[MDOC_MAX] = {
 	{ NULL, NULL }, /* Ek */
 	{ termp_bt_pre, NULL }, /* Bt */
 	{ NULL, NULL }, /* Hf */
-	{ NULL, NULL }, /* Fr */
+	{ termp_under_pre, NULL }, /* Fr */
 	{ termp_ud_pre, NULL }, /* Ud */
 	{ NULL, termp_lb_post }, /* Lb */
 	{ termp_sp_pre, NULL }, /* Lp */
@@ -238,8 +239,8 @@ static	const struct termact termacts[MDOC_MAX] = {
 	{ termp_quote_pre, termp_quote_post }, /* Bro */
 	{ NULL, NULL }, /* Brc */
 	{ NULL, termp____post }, /* %C */
-	{ NULL, NULL }, /* Es */ /* TODO */
-	{ NULL, NULL }, /* En */ /* TODO */
+	{ termp_es_pre, NULL }, /* Es */
+	{ termp_quote_pre, termp_quote_post }, /* En */
 	{ termp_xx_pre, NULL }, /* Dx */
 	{ NULL, termp____post }, /* %Q */
 	{ termp_sp_pre, NULL }, /* br */
@@ -1829,6 +1830,13 @@ termp_sp_pre(DECL_ARGS)
 }
 
 static int
+termp_es_pre(DECL_ARGS)
+{
+
+	return(0);
+}
+
+static int
 termp_quote_pre(DECL_ARGS)
 {
 
@@ -1860,6 +1868,12 @@ termp_quote_pre(DECL_ARGS)
 	case MDOC_Dq:
 		term_word(p, "\\(lq");
 		break;
+	case MDOC_En:
+		if (NULL == n->norm->Es ||
+		    NULL == n->norm->Es->child)
+			return(1);
+		term_word(p, n->norm->Es->child->string);
+		break;
 	case MDOC_Eo:
 		break;
 	case MDOC_Po:
@@ -1897,7 +1911,8 @@ termp_quote_post(DECL_ARGS)
 	if (MDOC_BODY != n->type && MDOC_ELEM != n->type)
 		return;
 
-	p->flags |= TERMP_NOSPACE;
+	if (MDOC_En != n->tok)
+		p->flags |= TERMP_NOSPACE;
 
 	switch (n->tok) {
 	case MDOC_Ao:
@@ -1924,6 +1939,14 @@ termp_quote_post(DECL_ARGS)
 	case MDOC_Dq:
 		term_word(p, "\\(rq");
 		break;
+	case MDOC_En:
+		if (NULL != n->norm->Es &&
+		    NULL != n->norm->Es->child &&
+		    NULL != n->norm->Es->child->next) {
+			p->flags |= TERMP_NOSPACE;
+			term_word(p, n->norm->Es->child->next->string);
+		}
+		break;
 	case MDOC_Eo:
 		break;
 	case MDOC_Po:
diff --git a/mdoc_validate.c b/mdoc_validate.c
index 827f2d79..54257b29 100644
--- a/mdoc_validate.c
+++ b/mdoc_validate.c
@@ -98,6 +98,8 @@ static	int	 post_bx(POST_ARGS);
 static	int	 post_defaults(POST_ARGS);
 static	int	 post_dd(POST_ARGS);
 static	int	 post_dt(POST_ARGS);
+static	int	 post_en(POST_ARGS);
+static	int	 post_es(POST_ARGS);
 static	int	 post_eoln(POST_ARGS);
 static	int	 post_hyph(POST_ARGS);
 static	int	 post_ignpar(POST_ARGS);
@@ -125,6 +127,7 @@ static	int	 pre_display(PRE_ARGS);
 static	int	 pre_dt(PRE_ARGS);
 static	int	 pre_it(PRE_ARGS);
 static	int	 pre_literal(PRE_ARGS);
+static	int	 pre_obsolete(PRE_ARGS);
 static	int	 pre_os(PRE_ARGS);
 static	int	 pre_par(PRE_ARGS);
 static	int	 pre_sh(PRE_ARGS);
@@ -145,6 +148,8 @@ static	v_post	 posts_d1[] = { bwarn_ge1, post_hyph, NULL };
 static	v_post	 posts_dd[] = { post_dd, post_prol, NULL };
 static	v_post	 posts_dl[] = { post_literal, bwarn_ge1, NULL };
 static	v_post	 posts_dt[] = { post_dt, post_prol, NULL };
+static	v_post	 posts_en[] = { post_en, NULL };
+static	v_post	 posts_es[] = { post_es, NULL };
 static	v_post	 posts_fo[] = { hwarn_eq1, bwarn_ge1, NULL };
 static	v_post	 posts_hyph[] = { post_hyph, NULL };
 static	v_post	 posts_hyphtext[] = { ewarn_ge1, post_hyph, NULL };
@@ -173,6 +178,7 @@ static	v_pre	 pres_dl[] = { pre_literal, pre_display, NULL };
 static	v_pre	 pres_dd[] = { pre_dd, NULL };
 static	v_pre	 pres_dt[] = { pre_dt, NULL };
 static	v_pre	 pres_it[] = { pre_it, pre_par, NULL };
+static	v_pre	 pres_obsolete[] = { pre_obsolete, NULL };
 static	v_pre	 pres_os[] = { pre_os, NULL };
 static	v_pre	 pres_pp[] = { pre_par, NULL };
 static	v_pre	 pres_sh[] = { pre_sh, NULL };
@@ -214,7 +220,7 @@ static	const struct valids mdoc_valids[MDOC_MAX] = {
 	{ NULL, posts_nd },			/* Nd */
 	{ NULL, posts_nm },			/* Nm */
 	{ NULL, NULL },				/* Op */
-	{ NULL, NULL },				/* Ot */
+	{ pres_obsolete, NULL },		/* Ot */
 	{ NULL, posts_defaults },		/* Pa */
 	{ pres_std, posts_std },		/* Rv */
 	{ NULL, posts_st },			/* St */
@@ -284,7 +290,7 @@ static	const struct valids mdoc_valids[MDOC_MAX] = {
 	{ NULL, NULL },				/* Ek */
 	{ NULL, posts_eoln },			/* Bt */
 	{ NULL, NULL },				/* Hf */
-	{ NULL, NULL },				/* Fr */
+	{ pres_obsolete, NULL },		/* Fr */
 	{ NULL, posts_eoln },			/* Ud */
 	{ NULL, posts_lb },			/* Lb */
 	{ pres_pp, posts_pp },			/* Lp */
@@ -294,8 +300,8 @@ static	const struct valids mdoc_valids[MDOC_MAX] = {
 	{ NULL, NULL },				/* Bro */
 	{ NULL, NULL },				/* Brc */
 	{ NULL, posts_text },			/* %C */
-	{ NULL, NULL },				/* Es */
-	{ NULL, NULL },				/* En */
+	{ pres_obsolete, posts_es },		/* Es */
+	{ pres_obsolete, posts_en },		/* En */
 	{ NULL, NULL },				/* Dx */
 	{ NULL, posts_text },			/* %Q */
 	{ NULL, posts_pp },			/* br */
@@ -931,6 +937,16 @@ pre_std(PRE_ARGS)
 }
 
 static int
+pre_obsolete(PRE_ARGS)
+{
+
+	if (MDOC_ELEM == n->type || MDOC_BLOCK == n->type)
+		mandoc_msg(MANDOCERR_MACRO_OBS, mdoc->parse,
+		    n->line, n->pos, mdoc_macronames[n->tok]);
+	return(1);
+}
+
+static int
 pre_dt(PRE_ARGS)
 {
 
@@ -1230,6 +1246,23 @@ post_an(POST_ARGS)
 }
 
 static int
+post_en(POST_ARGS)
+{
+
+	if (MDOC_BLOCK == mdoc->last->type)
+		mdoc->last->norm->Es = mdoc->last_es;
+	return(1);
+}
+
+static int
+post_es(POST_ARGS)
+{
+
+	mdoc->last_es = mdoc->last;
+	return(1);
+}
+
+static int
 post_it(POST_ARGS)
 {
 	int		  i, cols;
diff --git a/read.c b/read.c
index 009c79dc..1672efb9 100644
--- a/read.c
+++ b/read.c
@@ -115,7 +115,7 @@ static	const char * const	mandocerrs[MANDOCERR_MAX] = {
 	"unexpected section",
 
 	/* related to macros and nesting */
-	"skipping obsolete macro",
+	"obsolete macro",
 	"skipping paragraph macro",
 	"moving paragraph macro out of list",
 	"skipping no-space macro",