mms/mmk differences - depends_on as source

[hb--]

MMS and MMK disagree on how depends_on can be used in a dependency:

$ mms/id
%MMS-I-IDENT, MMS V3.3-4 � Digital Equipment Corporation 1989, 1998. All rights 
reserved. � Electronic Data Systems Limited 1995, 1998 
$ 

$ mms/desc=tt:
a depends_on depends_on 


        a depends_on depends_on 
%MMS-W-DRVPARSERR, Parser error: "syntax error" in file _FTA595:[DECUSERVE_USER.USER]DESCRIP.MMS;, line 0.
%MMS-F-DRVBADPARSE, Parser detected a fatal syntax error in the description file.
$

$ mmk/id
%MMK-I-IDENT, this is the MMK Make Utility V5.0
-MMK-I-COPYRIGHT, Copyright (c) 2008, Matthew Madison.
    Copyright (c) 2013, Endless Software Solutions.
  See LICENSE.TXT in distribution kit for license information.

$ mmk/desc=tt:
a depends_on depends_on 
        show time
^Z 
%MMK-F-CANTUPD, cannot update target DEPENDS_ON - sources unknown
$
$ copy nl: depends_on.
$ mmk/desc=tt:
a depends_on depends_on 
        show time
^Z 
  16-JUN-2015 18:57:21
$

[tesneddon]

I'll add this to the MMK documentation.