Remove the HTML title= attributes which harmed accessibility and

violated the principle of separation of content and presentation.
Instead, implement the tooltips purely in CSS.
Thanks to John Gardner <gardnerjohng at gmail dot com> for
suggesting most of the styling in the new ::before rules.

11 files changed, 146 insertions, 84 deletions

diff --git a/html.c b/html.c
index 55d5c99f..cc1bc394 100644
--- a/html.c
+++ b/html.c
@@ -1,4 +1,4 @@
-/*	$Id: html.c,v 1.250 2019/01/07 07:26:29 schwarze Exp $ */
+/*	$Id: html.c,v 1.251 2019/01/11 12:56:42 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011-2015, 2017-2019 Ingo Schwarze <schwarze@openbsd.org>
@@ -657,12 +657,6 @@ print_otag(struct html *h, enum htmltag tag, const char *fmt, ...)
 			print_encode(h, arg1, NULL, 1);
 			fmt++;
 			break;
-		case 'T':
-			print_encode(h, arg1, NULL, 1);
-			print_word(h, "\" title=\"");
-			print_encode(h, arg1, NULL, 1);
-			fmt++;
-			break;
 		default:
 			print_encode(h, arg1, NULL, 1);
 			break;
diff --git a/man_html.c b/man_html.c
index 8b4dd945..e11ed0e6 100644
--- a/man_html.c
+++ b/man_html.c
@@ -1,4 +1,4 @@
-/*	$Id: man_html.c,v 1.167 2019/01/07 07:26:29 schwarze Exp $ */
+/*	$Id: man_html.c,v 1.168 2019/01/11 12:56:43 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2013-2015, 2017-2019 Ingo Schwarze <schwarze@openbsd.org>
@@ -299,9 +299,9 @@ man_SH_pre(MAN_ARGS)
 	case ROFFT_HEAD:
 		id = html_make_id(n, 1);
 		if (n->tok == MAN_SH)
-			print_otag(h, TAG_H1, "cTi", "Sh", id);
+			print_otag(h, TAG_H1, "ci", "Sh", id);
 		else
-			print_otag(h, TAG_H2, "cTi", "Ss", id);
+			print_otag(h, TAG_H2, "ci", "Ss", id);
 		if (id != NULL)
 			print_otag(h, TAG_A, "chR", "permalink", id);
 		break;
@@ -513,7 +513,7 @@ man_SY_pre(MAN_ARGS)
 		break;
 	case ROFFT_HEAD:
 		print_otag(h, TAG_TD, "");
-		print_otag(h, TAG_CODE, "cT", "Nm");
+		print_otag(h, TAG_CODE, "c", "Nm");
 		break;
 	case ROFFT_BODY:
 		print_otag(h, TAG_TD, "");
@@ -535,10 +535,10 @@ man_UR_pre(MAN_ARGS)
 		assert(n->child->type == ROFFT_TEXT);
 		if (n->tok == MAN_MT) {
 			mandoc_asprintf(&cp, "mailto:%s", n->child->string);
-			print_otag(h, TAG_A, "cTh", "Mt", cp);
+			print_otag(h, TAG_A, "ch", "Mt", cp);
 			free(cp);
 		} else
-			print_otag(h, TAG_A, "cTh", "Lk", n->child->string);
+			print_otag(h, TAG_A, "ch", "Lk", n->child->string);
 	}
 
 	assert(n->next->type == ROFFT_BODY);
diff --git a/mandoc.css b/mandoc.css
index db17e9de..9526c74b 100644
--- a/mandoc.css
+++ b/mandoc.css
@@ -1,4 +1,4 @@
-/* $Id: mandoc.css,v 1.43 2019/01/10 07:40:10 schwarze Exp $ */
+/* $Id: mandoc.css,v 1.44 2019/01/11 12:56:43 schwarze Exp $ */
 /*
  * Standard style sheet for mandoc(1) -Thtml and man.cgi(8).
  *
@@ -65,7 +65,7 @@ td.foot-os {	text-align: right; }
 
 .manual-text {
 		margin-left: 3.8em; }
-.Nd {		display: inline; }
+.Nd { }
 .Sh {		margin-top: 1.2em;
 		margin-bottom: 0.6em;
 		margin-left: -3.2em;
@@ -254,6 +254,80 @@ a.In { }
 		font-weight: normal;
 		font-family: monospace; }
 
+/* Tooltip support. */
+
+.Sh, .Ss {	position: relative; }
+.An, .Ar, .Cd, .Cm, .Dv, .Em, .Er, .Ev, .Fa, .Fd, .Fl, .Fn, .Ft,
+.Ic, code.In, .Lb, .Lk, .Ms, .Mt, .Nd, code.Nm, .Pa, .Rs,
+.St, .Sx, .Sy, .Va, .Vt, .Xr {
+		display: inline-block;
+		position: relative; }
+
+.An::before {	content: "An"; }
+.Ar::before {	content: "Ar"; }
+.Cd::before {	content: "Cd"; }
+.Cm::before {	content: "Cm"; }
+.Dv::before {	content: "Dv"; }
+.Em::before {	content: "Em"; }
+.Er::before {	content: "Er"; }
+.Ev::before {	content: "Ev"; }
+.Fa::before {	content: "Fa"; }
+.Fd::before {	content: "Fd"; }
+.Fl::before {	content: "Fl"; }
+.Fn::before {	content: "Fn"; }
+.Ft::before {	content: "Ft"; }
+.Ic::before {	content: "Ic"; }
+code.In::before { content: "In"; }
+.Lb::before {	content: "Lb"; }
+.Lk::before {	content: "Lk"; }
+.Ms::before {	content: "Ms"; }
+.Mt::before {	content: "Mt"; }
+.Nd::before {	content: "Nd"; }
+code.Nm::before { content: "Nm"; }
+.Pa::before {	content: "Pa"; }
+.Rs::before {	content: "Rs"; }
+.Sh::before {	content: "Sh"; }
+.Ss::before {	content: "Ss"; }
+.St::before {	content: "St"; }
+.Sx::before {	content: "Sx"; }
+.Sy::before {	content: "Sy"; }
+.Va::before {	content: "Va"; }
+.Vt::before {	content: "Vt"; }
+.Xr::before {	content: "Xr"; }
+
+.An::before, .Ar::before, .Cd::before, .Cm::before,
+.Dv::before, .Em::before, .Er::before, .Ev::before,
+.Fa::before, .Fd::before, .Fl::before, .Fn::before, .Ft::before,
+.Ic::before, code.In::before, .Lb::before, .Lk::before,
+.Ms::before, .Mt::before, .Nd::before, code.Nm::before,
+.Pa::before, .Rs::before,
+.Sh::before, .Ss::before, .St::before, .Sx::before, .Sy::before,
+.Va::before, .Vt::before, .Xr::before {
+		opacity: 0;
+		transition: .15s ease opacity;
+		pointer-events: none;
+		position: absolute;
+		bottom: 100%;
+		box-shadow: 0 0 .35em #000;
+		padding: .15em .25em;
+		white-space: nowrap;
+		font-family: Helvetica,Arial,sans-serif;
+		font-style: normal;
+		font-weight: bold;
+		color: black;
+		background: #fff; }
+.An:hover::before, .Ar:hover::before, .Cd:hover::before, .Cm:hover::before,
+.Dv:hover::before, .Em:hover::before, .Er:hover::before, .Ev:hover::before,
+.Fa:hover::before, .Fd:hover::before, .Fl:hover::before, .Fn:hover::before,
+.Ft:hover::before, .Ic:hover::before, code.In:hover::before,
+.Lb:hover::before, .Lk:hover::before, .Ms:hover::before, .Mt:hover::before,
+.Nd:hover::before, code.Nm:hover::before, .Pa:hover::before,
+.Rs:hover::before, .Sh:hover::before, .Ss:hover::before, .St:hover::before,
+.Sx:hover::before, .Sy:hover::before, .Va:hover::before, .Vt:hover::before,
+.Xr:hover::before {
+		opacity: 1;
+		pointer-events: inherit; }
+
 /* Overrides to avoid excessive margins on small devices. */
 
 @media (max-width: 37.5em) {
diff --git a/mandoc_html.3 b/mandoc_html.3
index 9e922915..32407574 100644
--- a/mandoc_html.3
+++ b/mandoc_html.3
@@ -1,4 +1,4 @@
-.\"	$Id: mandoc_html.3,v 1.18 2018/11/26 01:38:23 schwarze Exp $
+.\"	$Id: mandoc_html.3,v 1.19 2019/01/11 12:56:43 schwarze Exp $
 .\"
 .\" Copyright (c) 2014, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: November 26 2018 $
+.Dd $Mdocdate: January 11 2019 $
 .Dt MANDOC_HTML 3
 .Os
 .Sh NAME
@@ -167,11 +167,6 @@ the respective attribute is not written.
 Print a
 .Cm class
 attribute.
-This attribute letter can optionally be followed by the modifier letter
-.Cm T .
-In that case, a
-.Cm title
-attribute with the same value is also printed.
 .It Cm h
 Print a
 .Cm href
diff --git a/mdoc_html.c b/mdoc_html.c
index 08a2dc82..fe62b80a 100644
--- a/mdoc_html.c
+++ b/mdoc_html.c
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_html.c,v 1.324 2019/01/10 07:40:10 schwarze Exp $ */
+/*	$Id: mdoc_html.c,v 1.325 2019/01/11 12:56:43 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2014,2015,2016,2017,2018 Ingo Schwarze <schwarze@openbsd.org>
@@ -573,7 +573,7 @@ mdoc_sh_pre(MDOC_ARGS)
 		break;
 	case ROFFT_HEAD:
 		id = html_make_id(n, 1);
-		print_otag(h, TAG_H1, "cTi", "Sh", id);
+		print_otag(h, TAG_H1, "ci", "Sh", id);
 		if (id != NULL)
 			print_otag(h, TAG_A, "chR", "permalink", id);
 		break;
@@ -605,7 +605,7 @@ mdoc_ss_pre(MDOC_ARGS)
 	}
 
 	id = html_make_id(n, 1);
-	print_otag(h, TAG_H2, "cTi", "Ss", id);
+	print_otag(h, TAG_H2, "ci", "Ss", id);
 	if (id != NULL)
 		print_otag(h, TAG_A, "chR", "permalink", id);
 	return 1;
@@ -618,7 +618,7 @@ mdoc_fl_pre(MDOC_ARGS)
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "permalink", id);
-	print_otag(h, TAG_CODE, "cTi", "Fl", id);
+	print_otag(h, TAG_CODE, "ci", "Fl", id);
 
 	print_text(h, "\\-");
 	if (!(n->child == NULL &&
@@ -637,7 +637,7 @@ mdoc_cm_pre(MDOC_ARGS)
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "permalink", id);
-	print_otag(h, TAG_CODE, "cTi", "Cm", id);
+	print_otag(h, TAG_CODE, "ci", "Cm", id);
 	return 1;
 }
 
@@ -657,7 +657,7 @@ mdoc_nd_pre(MDOC_ARGS)
 	}
 	print_text(h, "\\(em");
 	/* Cannot use TAG_SPAN because it may contain blocks. */
-	print_otag(h, TAG_DIV, "cT", "Nd");
+	print_otag(h, TAG_DIV, "c", "Nd");
 	return 1;
 }
 
@@ -671,7 +671,7 @@ mdoc_nm_pre(MDOC_ARGS)
 		print_otag(h, TAG_TD, "");
 		/* FALLTHROUGH */
 	case ROFFT_ELEM:
-		print_otag(h, TAG_CODE, "cT", "Nm");
+		print_otag(h, TAG_CODE, "c", "Nm");
 		return 1;
 	case ROFFT_BODY:
 		print_otag(h, TAG_TD, "");
@@ -693,11 +693,11 @@ mdoc_xr_pre(MDOC_ARGS)
 		return 0;
 
 	if (h->base_man1)
-		print_otag(h, TAG_A, "cThM", "Xr",
+		print_otag(h, TAG_A, "chM", "Xr",
 		    n->child->string, n->child->next == NULL ?
 		    NULL : n->child->next->string);
 	else
-		print_otag(h, TAG_A, "cT", "Xr");
+		print_otag(h, TAG_A, "c", "Xr");
 
 	n = n->child;
 	print_text(h, n->string);
@@ -726,7 +726,7 @@ mdoc_ns_pre(MDOC_ARGS)
 static int
 mdoc_ar_pre(MDOC_ARGS)
 {
-	print_otag(h, TAG_VAR, "cT", "Ar");
+	print_otag(h, TAG_VAR, "c", "Ar");
 	return 1;
 }
 
@@ -898,14 +898,14 @@ mdoc_ex_pre(MDOC_ARGS)
 static int
 mdoc_st_pre(MDOC_ARGS)
 {
-	print_otag(h, TAG_SPAN, "cT", "St");
+	print_otag(h, TAG_SPAN, "c", "St");
 	return 1;
 }
 
 static int
 mdoc_em_pre(MDOC_ARGS)
 {
-	print_otag(h, TAG_I, "cT", "Em");
+	print_otag(h, TAG_I, "c", "Em");
 	return 1;
 }
 
@@ -935,7 +935,7 @@ mdoc_sx_pre(MDOC_ARGS)
 	char	*id;
 
 	id = html_make_id(n, 0);
-	print_otag(h, TAG_A, "cThR", "Sx", id);
+	print_otag(h, TAG_A, "chR", "Sx", id);
 	free(id);
 	return 1;
 }
@@ -987,7 +987,7 @@ mdoc_bd_pre(MDOC_ARGS)
 static int
 mdoc_pa_pre(MDOC_ARGS)
 {
-	print_otag(h, TAG_SPAN, "cT", "Pa");
+	print_otag(h, TAG_SPAN, "c", "Pa");
 	return 1;
 }
 
@@ -1018,7 +1018,7 @@ mdoc_an_pre(MDOC_ARGS)
 	if (n->sec == SEC_AUTHORS && ! (h->flags & HTML_NOSPLIT))
 		h->flags |= HTML_SPLIT;
 
-	print_otag(h, TAG_SPAN, "cT", "An");
+	print_otag(h, TAG_SPAN, "c", "An");
 	return 1;
 }
 
@@ -1026,7 +1026,7 @@ static int
 mdoc_cd_pre(MDOC_ARGS)
 {
 	synopsis_pre(h, n);
-	print_otag(h, TAG_CODE, "cT", "Cd");
+	print_otag(h, TAG_CODE, "c", "Cd");
 	return 1;
 }
 
@@ -1037,7 +1037,7 @@ mdoc_dv_pre(MDOC_ARGS)
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "permalink", id);
-	print_otag(h, TAG_CODE, "cTi", "Dv", id);
+	print_otag(h, TAG_CODE, "ci", "Dv", id);
 	return 1;
 }
 
@@ -1048,7 +1048,7 @@ mdoc_ev_pre(MDOC_ARGS)
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "permalink", id);
-	print_otag(h, TAG_CODE, "cTi", "Ev", id);
+	print_otag(h, TAG_CODE, "ci", "Ev", id);
 	return 1;
 }
 
@@ -1065,7 +1065,7 @@ mdoc_er_pre(MDOC_ARGS)
 
 	if (id != NULL)
 		print_otag(h, TAG_A, "chR", "permalink", id);
-	print_otag(h, TAG_CODE, "cTi", "Er", id);
+	print_otag(h, TAG_CODE, "ci", "Er", id);
 	return 1;
 }
 
@@ -1076,12 +1076,12 @@ mdoc_fa_pre(MDOC_ARGS)
 	struct tag		*t;
 
 	if (n->parent->tok != MDOC_Fo) {
-		print_otag(h, TAG_VAR, "cT", "Fa");
+		print_otag(h, TAG_VAR, "c", "Fa");
 		return 1;
 	}
 
 	for (nn = n->child; nn; nn = nn->next) {
-		t = print_otag(h, TAG_VAR, "cT", "Fa");
+		t = print_otag(h, TAG_VAR, "c", "Fa");
 		print_text(h, nn->string);
 		print_tagq(h, t);
 		if (nn->next) {
@@ -1112,11 +1112,11 @@ mdoc_fd_pre(MDOC_ARGS)
 	assert(n->type == ROFFT_TEXT);
 
 	if (strcmp(n->string, "#include")) {
-		print_otag(h, TAG_CODE, "cT", "Fd");
+		print_otag(h, TAG_CODE, "c", "Fd");
 		return 1;
 	}
 
-	print_otag(h, TAG_CODE, "cT", "In");
+	print_otag(h, TAG_CODE, "c", "In");
 	print_text(h, n->string);
 
 	if (NULL != (n = n->next)) {
@@ -1130,10 +1130,10 @@ mdoc_fd_pre(MDOC_ARGS)
 			cp = strchr(buf, '\0') - 1;
 			if (cp >= buf && (*cp == '>' || *cp == '"'))
 				*cp = '\0';
-			t = print_otag(h, TAG_A, "cThI", "In", buf);
+			t = print_otag(h, TAG_A, "chI", "In", buf);
 			free(buf);
 		} else
-			t = print_otag(h, TAG_A, "cT", "In");
+			t = print_otag(h, TAG_A, "c", "In");
 
 		print_text(h, n->string);
 		print_tagq(h, t);
@@ -1160,7 +1160,7 @@ mdoc_vt_pre(MDOC_ARGS)
 	} else if (n->type == ROFFT_HEAD)
 		return 0;
 
-	print_otag(h, TAG_VAR, "cT", "Vt");
+	print_otag(h, TAG_VAR, "c", "Vt");
 	return 1;
 }
 
@@ -1168,7 +1168,7 @@ static int
 mdoc_ft_pre(MDOC_ARGS)
 {
 	synopsis_pre(h, n);
-	print_otag(h, TAG_VAR, "cT", "Ft");
+	print_otag(h, TAG_VAR, "c", "Ft");
 	return 1;
 }
 
@@ -1189,7 +1189,7 @@ mdoc_fn_pre(MDOC_ARGS)
 
 	ep = strchr(sp, ' ');
 	if (NULL != ep) {
-		t = print_otag(h, TAG_VAR, "cT", "Ft");
+		t = print_otag(h, TAG_VAR, "c", "Ft");
 
 		while (ep) {
 			sz = MIN((int)(ep - sp), BUFSIZ - 1);
@@ -1202,7 +1202,7 @@ mdoc_fn_pre(MDOC_ARGS)
 		print_tagq(h, t);
 	}
 
-	t = print_otag(h, TAG_CODE, "cT", "Fn");
+	t = print_otag(h, TAG_CODE, "c", "Fn");
 
 	if (sp)
 		print_text(h, sp);
@@ -1215,10 +1215,10 @@ mdoc_fn_pre(MDOC_ARGS)
 
 	for (n = n->child->next; n; n = n->next) {
 		if (NODE_SYNPRETTY & n->flags)
-			t = print_otag(h, TAG_VAR, "cTs", "Fa",
+			t = print_otag(h, TAG_VAR, "cs", "Fa",
 			    "white-space", "nowrap");
 		else
-			t = print_otag(h, TAG_VAR, "cT", "Fa");
+			t = print_otag(h, TAG_VAR, "c", "Fa");
 		print_text(h, n->string);
 		print_tagq(h, t);
 		if (n->next) {
@@ -1291,7 +1291,7 @@ mdoc_lk_pre(MDOC_ARGS)
 	descr = link->next;
 	if (descr == punct)
 		descr = link;  /* no text */
-	t = print_otag(h, TAG_A, "cTh", "Lk", link->string);
+	t = print_otag(h, TAG_A, "ch", "Lk", link->string);
 	do {
 		if (descr->flags & (NODE_DELIMC | NODE_DELIMO))
 			h->flags |= HTML_NOSPACE;
@@ -1319,7 +1319,7 @@ mdoc_mt_pre(MDOC_ARGS)
 		assert(n->type == ROFFT_TEXT);
 
 		mandoc_asprintf(&cp, "mailto:%s", n->string);
-		t = print_otag(h, TAG_A, "cTh", "Mt", cp);
+		t = print_otag(h, TAG_A, "ch", "Mt", cp);
 		print_text(h, n->string);
 		print_tagq(h, t);
 		free(cp);
@@ -1347,7 +1347,7 @@ mdoc_fo_pre(MDOC_ARGS)
 		return 0;
 
 	assert(n->child->string);
-	t = print_otag(h, TAG_CODE, "cT", "Fn");
+	t = print_otag(h, TAG_CODE, "c", "Fn");
 	print_text(h, n->child->string);
 	print_tagq(h, t);
 	return 0;
@@ -1371,7 +1371,7 @@ mdoc_in_pre(MDOC_ARGS)
 	struct tag	*t;
 
 	synopsis_pre(h, n);
-	print_otag(h, TAG_CODE, "cT", "In");
+	print_otag(h, TAG_CODE, "c", "In");
 
 	/*
 	 * The first argument of the `In' gets special treatment as
@@ -1390,9 +1390,9 @@ mdoc_in_pre(MDOC_ARGS)
 		assert(n->type == ROFFT_TEXT);
 
 		if (h->base_includes)
-			t = print_otag(h, TAG_A, "cThI", "In", n->string);
+			t = print_otag(h, TAG_A, "chI", "In", n->string);
 		else
-			t = print_otag(h, TAG_A, "cT", "In");
+			t = print_otag(h, TAG_A, "c", "In");
 		print_text(h, n->string);
 		print_tagq(h, t);
 
@@ -1417,14 +1417,14 @@ mdoc_ic_pre(MDOC_ARGS)
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "permalink", id);
-	print_otag(h, TAG_CODE, "cTi", "Ic", id);
+	print_otag(h, TAG_CODE, "ci", "Ic", id);
 	return 1;
 }
 
 static int
 mdoc_va_pre(MDOC_ARGS)
 {
-	print_otag(h, TAG_VAR, "cT", "Va");
+	print_otag(h, TAG_VAR, "c", "Va");
 	return 1;
 }
 
@@ -1476,7 +1476,7 @@ mdoc_ms_pre(MDOC_ARGS)
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "permalink", id);
-	print_otag(h, TAG_SPAN, "cTi", "Ms", id);
+	print_otag(h, TAG_SPAN, "ci", "Ms", id);
 	return 1;
 }
 
@@ -1509,7 +1509,7 @@ mdoc_rs_pre(MDOC_ARGS)
 	case ROFFT_BODY:
 		if (n->sec == SEC_SEE_ALSO)
 			print_otag(h, TAG_P, "c", "Pp");
-		print_otag(h, TAG_CITE, "cT", "Rs");
+		print_otag(h, TAG_CITE, "c", "Rs");
 		break;
 	default:
 		abort();
@@ -1542,7 +1542,7 @@ mdoc_li_pre(MDOC_ARGS)
 static int
 mdoc_sy_pre(MDOC_ARGS)
 {
-	print_otag(h, TAG_B, "cT", "Sy");
+	print_otag(h, TAG_B, "c", "Sy");
 	return 1;
 }
 
@@ -1552,7 +1552,7 @@ mdoc_lb_pre(MDOC_ARGS)
 	if (SEC_LIBRARY == n->sec && NODE_LINE & n->flags && n->prev)
 		print_otag(h, TAG_BR, "");
 
-	print_otag(h, TAG_SPAN, "cT", "Lb");
+	print_otag(h, TAG_SPAN, "c", "Lb");
 	return 1;
 }
 
diff --git a/regress/man/IP/literal.out_html b/regress/man/IP/literal.out_html
index ae90758b..844eb1dd 100644
--- a/regress/man/IP/literal.out_html
+++ b/regress/man/IP/literal.out_html
@@ -24,7 +24,7 @@ literal
 paragraph
 </pre>
 regular text
-<h2 class="Ss" title="Ss" id="literal_into_indented_paragraph"><a class="permalink" href="#literal_into_indented_paragraph">literal
+<h2 class="Ss" id="literal_into_indented_paragraph"><a class="permalink" href="#literal_into_indented_paragraph">literal
   into indented paragraph</a></h2>
 regular text
 <pre>
@@ -42,7 +42,7 @@ text
     indented regular text</dd>
 </dl>
 <p class="Pp">new regular paragraph</p>
-<h2 class="Ss" title="Ss" id="literal_out_of_indented_paragraph"><a class="permalink" href="#literal_out_of_indented_paragraph">literal
+<h2 class="Ss" id="literal_out_of_indented_paragraph"><a class="permalink" href="#literal_out_of_indented_paragraph">literal
   out of indented paragraph</a></h2>
 regular text
 <dl class="Bl-tag">
diff --git a/regress/man/SH/paragraph.out_html b/regress/man/SH/paragraph.out_html
index 5aef80e2..49627f19 100644
--- a/regress/man/SH/paragraph.out_html
+++ b/regress/man/SH/paragraph.out_html
@@ -1,6 +1,6 @@
 BEGINTEST
-<h1 class="Sh" title="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
 This text immediately follows a section header.
 <p class="Pp">This is a paragraph.</p>
-<h1 class="Sh" title="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
+<h1 class="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
 ENDTEST
diff --git a/regress/man/SS/paragraph.out_html b/regress/man/SS/paragraph.out_html
index e36f2a06..bc803f86 100644
--- a/regress/man/SS/paragraph.out_html
+++ b/regress/man/SS/paragraph.out_html
@@ -1,8 +1,8 @@
 BEGINTEST
-<h2 class="Ss" title="Ss" id="First_subsection"><a class="permalink" href="#First_subsection">First
+<h2 class="Ss" id="First_subsection"><a class="permalink" href="#First_subsection">First
   subsection</a></h2>
 This text immediately follows a subsection header.
 <p class="Pp">This is a paragraph.</p>
-<h2 class="Ss" title="Ss" id="Second_subsection"><a class="permalink" href="#Second_subsection">Second
+<h2 class="Ss" id="Second_subsection"><a class="permalink" href="#Second_subsection">Second
   subsection</a></h2>
 ENDTEST
diff --git a/regress/man/SY/literal.out_html b/regress/man/SY/literal.out_html
index b1f378cf..5daf74ef 100644
--- a/regress/man/SY/literal.out_html
+++ b/regress/man/SY/literal.out_html
@@ -3,7 +3,7 @@ BEGINTEST
 initial regular text
 <table class="Nm">
   <tr>
-    <td><code class="Nm" title="Nm">command</code></td>
+    <td><code class="Nm">command</code></td>
     <td><i>arguments</i></td>
   </tr>
 </table>
@@ -14,7 +14,7 @@ before display
 </pre>
 <table class="Nm">
   <tr>
-    <td><code class="Nm" title="Nm">command</code></td>
+    <td><code class="Nm">command</code></td>
     <td>
     <pre>
 <i>arguments</i>
diff --git a/regress/mdoc/Rs/paragraph.out_html b/regress/mdoc/Rs/paragraph.out_html
index 19e9362c..ab2575e5 100644
--- a/regress/mdoc/Rs/paragraph.out_html
+++ b/regress/mdoc/Rs/paragraph.out_html
@@ -1,17 +1,16 @@
 BEGINTEST
 <br/>
-initial reference: <cite class="Rs" title="Rs"><span class="RsA">author
-  name</span>, <i class="RsB">book title</i>.</cite>
-<p class="Pp">in a paragraph:
-    <cite class="Rs" title="Rs"><span class="RsA">another author</span>,
-    <i class="RsB">another book</i>.</cite></p>
-<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
+initial reference: <cite class="Rs"><span class="RsA">author name</span>,
+  <i class="RsB">book title</i>.</cite>
+<p class="Pp">in a paragraph: <cite class="Rs"><span class="RsA">another
+    author</span>, <i class="RsB">another book</i>.</cite></p>
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
   ALSO</a></h1>
 initial reference:
-<p class="Pp"><cite class="Rs" title="Rs"><span class="RsA">author name</span>,
+<p class="Pp"><cite class="Rs"><span class="RsA">author name</span>,
     <i class="RsB">book title</i>.</cite></p>
 <p class="Pp">in a paragraph:</p>
-<p class="Pp"><cite class="Rs" title="Rs"><span class="RsA">another
-    author</span>, <i class="RsB">another book</i>.</cite></p>
+<p class="Pp"><cite class="Rs"><span class="RsA">another author</span>,
+    <i class="RsB">another book</i>.</cite></p>
 <pre>
 ENDTEST
diff --git a/regress/mdoc/Sh/paragraph.out_html b/regress/mdoc/Sh/paragraph.out_html
index 3eeb9fe8..7d4f0d40 100644
--- a/regress/mdoc/Sh/paragraph.out_html
+++ b/regress/mdoc/Sh/paragraph.out_html
@@ -1,7 +1,7 @@
 BEGINTEST
 <p class="Pp">descriptive text</p>
-<h2 class="Ss" title="Ss" id="Subsection"><a class="permalink" href="#Subsection">Subsection</a></h2>
+<h2 class="Ss" id="Subsection"><a class="permalink" href="#Subsection">Subsection</a></h2>
 initial subsection text
 <p class="Pp">subsection paragraph</p>
-<h1 class="Sh" title="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
+<h1 class="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
 ENDTEST