mandoc: Input lines that are not blank but generate no output, for

mandoc: Input lines that are not blank but generate no output, for

[schwarze]

Log Message:
-----------
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.

Modified Files:
--------------
    mandoc:
        man_html.c

Revision Data
-------------
Index: man_html.c
===================================================================
RCS file: /home/cvs/mandoc/mandoc/man_html.c,v
retrieving revision 1.156
retrieving revision 1.157
diff -Lman_html.c -Lman_html.c -u -p -r1.156 -r1.157
--- man_html.c
+++ man_html.c
@@ -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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