===================================================================
RCS file: /cvs/mandoc/mdoc_html.c,v
retrieving revision 1.49
retrieving revision 1.50
diff -u -p -r1.49 -r1.50
--- mandoc/mdoc_html.c	2009/12/02 10:16:55	1.49
+++ mandoc/mdoc_html.c	2010/01/01 13:17:58	1.50
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_html.c,v 1.49 2009/12/02 10:16:55 kristaps Exp $ */
+/*	$Id: mdoc_html.c,v 1.50 2010/01/01 13:17:58 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -659,12 +659,33 @@ mdoc_fl_pre(MDOC_ARGS)
 {
 	struct htmlpair	 tag;
 
+	/* `Cm' has no leading hyphen. */
+
+	if (MDOC_Cm == n->tok) {
+		PAIR_CLASS_INIT(&tag, "flag");
+		print_otag(h, TAG_SPAN, 1, &tag);
+		return(1);
+	}
+
+	/* A zero-length child shouldn't get a dash. */
+
+	if (n->child) {
+		assert(MDOC_TEXT == n->child->type);
+		assert(n->child->string);
+		if ('\0' == *n->child->string)
+			return(0);
+	}
+
 	PAIR_CLASS_INIT(&tag, "flag");
 	print_otag(h, TAG_SPAN, 1, &tag);
-	if (MDOC_Fl == n->tok) {
-		print_text(h, "\\-");
+
+	print_text(h, "\\-");
+
+	/* A blank `Fl' should incur a subsequent space. */
+
+	if (n->child)
 		h->flags |= HTML_NOSPACE;
-	}
+
 	return(1);
 }