[alicebot-archcomm] Ok we have some more, but a simple item at that...

[Gary Dubuque]

Program D logs this when it gets a duplicate pattern:

"Duplicate category:", pattern + " : " + that + " : " + topic, " in \"" +
filename + "\"", "conflicts with category already loaded from",
(String)node.get(Graphmaster.FILENAME)}

And does not add it to the Graphmaster's set of keys.  In truth, the
template may not be the same, so it is not necessarily a duplicate category
as logged in the error.

The AIML 1.01 standard says nothing about this.  It is left to the reader to
assume such a thing as identical patterns may rarely exist, if not only by
accident, in some large AIML documents.  Nor does it address what could
happen when this AIML is loaded into the ALICE engine.

For Graphmaster to work, duplicate patterns cannot exist.  This should be
clarified in the standards.  Of course, Graphmaster is not required by the
standards, so here we have a problem with which template to waste when other
options are used.  Program D's Graphmaster always discards any but the
first.  Another Graphmaster implementation may always clobber existing ones
leaving only the last.

This could have serious effects on how the AIML works (especially if
<pattern>*</pattern> is duplicated.)  If standard AIML is to work (mostly)
across the engines, shouldn't this warning be obvious in the official AIML
document?

Regards,
  Gary Dubuque
  Characterized in AIML edits