[developers] Expanding a grammar with defaults

Francis Bond fcbond at gmail.com
Thu Feb 26 05:31:07 CET 2009


I believe that approach should work, assuming all defaults are
> `lexical' rather than `persistent'.  I'd be happy to try and advise if
> there seem to be problems

Thank you.


The value of *description-persistence* is L, and the only default I could
find was:

lexeme := canon-sign &
 [ ORTH [ LIST [ REST #last ],
          LAST #last ],
   SYN [ HEAD.TOPIC /l -,
         LEX +,
         VAL.GAP <! !> ],
   SEM [ HOOK [ LTOP #ltop,
                INDEX #index ],
         KEY #key & [ LBL #ltop,
                      ARG0 #index ],
         RELS.LIST.FIRST #key ] ].

So it looks as though we are in luck :-).

Is there any way of testing for the existence of persistent defaults?

Francis Bond <http://www2.nict.go.jp/x/x161/en/member/bond/>
NICT Language Infrastructure Group
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