Neither bcd(6) nor morse(6) produce output containing slashes, and the

-d (decode) option works just fine with dashes.  :)

games/bcd/bcd.6

@@ -1,4 +1,4 @@
-.\"	$NetBSD: bcd.6,v 1.16 2003/08/07 09:37:04 agc Exp $
+.\"	$NetBSD: bcd.6,v 1.17 2018/01/16 06:43:53 pgoyette Exp $
 .\"
 .\" Copyright (c) 1988, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"	@(#)bcd.6	8.1 (Berkeley) 5/31/93
 .\"
-.Dd November 26, 2002
+.Dd January 9, 2018
 .Dt BCD 6
 .Os
 .Sh NAME
@@ -65,7 +65,7 @@ Decode
 .Nm ppt
 output, or
 .Nm morse
-output consisting of dots and slashes (as generated by using the
+output consisting of dots and dashes (as generated by using the
 .Fl s
 option).
 .El