===================================================================
RCS file: /cvs/mandoc/html.c,v
retrieving revision 1.180
retrieving revision 1.181
diff -u -p -r1.180 -r1.181
--- mandoc/html.c	2014/10/28 17:36:19	1.180
+++ mandoc/html.c	2014/10/29 00:17:43	1.181
@@ -1,4 +1,4 @@
-/*	$Id: html.c,v 1.180 2014/10/28 17:36:19 schwarze Exp $ */
+/*	$Id: html.c,v 1.181 2014/10/29 00:17:43 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011, 2012, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
@@ -422,9 +422,13 @@ print_encode(struct html *h, const char *p, int norecu
 			break;
 		case ESCAPE_NUMBERED:
 			c = mchars_num2char(seq, len);
+			if (c < 0)
+				continue;
 			break;
 		case ESCAPE_SPECIAL:
 			c = mchars_spec2cp(h->symtab, seq, len);
+			if (c <= 0)
+				continue;
 			break;
 		case ESCAPE_NOSPACE:
 			if ('\0' == *p)
@@ -433,9 +437,8 @@ print_encode(struct html *h, const char *p, int norecu
 		default:
 			continue;
 		}
-		if (c <= 0)
-			continue;
-		if (c < 0x20 || (c > 0x7E && c < 0xA0))
+		if ((c < 0x20 && c != 0x09) ||
+		    (c > 0x7E && c < 0xA0))
 			c = 0xFFFD;
 		if (c > 0x7E)
 			printf("&#%d;", c);