From dec80745ea3f5d059dbf60680136a44f3096b59e Mon Sep 17 00:00:00 2001
From: Ingo Schwarze <schwarze@openbsd.org>
Date: Tue, 23 Oct 2018 17:18:01 +0000
Subject: Input lines that are not blank but generate no output, for example
 lines containing nothing but "\&", are significant in no-fill mode and can be
 represented by blank lines inside <pre>. Fixing a bug that Pali dot Rohar at
 gmail dot com found in pod2man(1) output, for example Email::Address::XS(3p).

While here, inside no-fill mode, there is no need to encode
totally blank input lines by emulating .PP - just let them
through as we are inside <pre> anyway.
---
 man_html.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/man_html.c b/man_html.c
index 12cf8ea7..d487c6e7 100644
--- a/man_html.c
+++ b/man_html.c
@@ -1,4 +1,4 @@
-/*	$Id: man_html.c,v 1.156 2018/08/18 02:08:27 schwarze Exp $ */
+/*	$Id: man_html.c,v 1.157 2018/10/23 17:18:01 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2013,2014,2015,2017,2018 Ingo Schwarze <schwarze@openbsd.org>
@@ -264,7 +264,7 @@ print_man_node(MAN_ARGS)
 		    n->flags & NODE_LINE && *n->string == ' ' &&
 		    (h->flags & HTML_NONEWLINE) == 0)
 			print_otag(h, TAG_BR, "");
-		if (*n->string != '\0')
+		if (want_fillmode == MAN_nf || *n->string != '\0')
 			break;
 		print_paragraph(h);
 		return;
@@ -338,8 +338,11 @@ print_man_node(MAN_ARGS)
 	print_stagq(h, t);
 
 	if (fillmode(h, 0) == MAN_nf &&
-	    n->next != NULL && n->next->flags & NODE_LINE)
+	    n->next != NULL && n->next->flags & NODE_LINE) {
+		/* In .nf = <pre>, print even empty lines. */
+		h->col++;
 		print_endline(h);
+	}
 }
 
 /*
-- 
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