===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/mdoc.c,v
retrieving revision 1.156
retrieving revision 1.157
diff -u -r1.156 -r1.157
--- src/usr.bin/mandoc/mdoc.c	2017/06/17 13:05:47	1.156
+++ src/usr.bin/mandoc/mdoc.c	2017/08/11 16:55:10	1.157
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mdoc.c,v 1.156 2017/06/17 13:05:47 schwarze Exp $ */
+/*	$OpenBSD: mdoc.c,v 1.157 2017/08/11 16:55:10 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010, 2012-2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -295,8 +295,8 @@
 		if (end - c < 3)
 			break;
 		if (c[1] != ' ' ||
-		    isalpha((unsigned char)c[-2]) == 0 ||
-		    isalpha((unsigned char)c[-1]) == 0 ||
+		    isalnum((unsigned char)c[-2]) == 0 ||
+		    isalnum((unsigned char)c[-1]) == 0 ||
 		    (c[-2] == 'n' && c[-1] == 'c') ||
 		    (c[-2] == 'v' && c[-1] == 's'))
 			continue;