Feature ARGS

[Dan Flickinger]

Dear Soma -

Like Ann, I don't believe that you should need to make the change to
the grammar that you describe.  The ARGS feature is to be used both by
phrasal rules and by lexical rules.  If you want to refer to the
single daughter in a lexical rule without always making reference to
the ARGS attribute, you can simply create another attribute LXDTR on
the type for lexical rules, and make the value of that attribute
reentrant with the single element of the ARGS list.  Then your
constraints on lexical rules can always make reference to the LXDTR
attribute, and the parser can continue to make reference to the ARGS
attribute.

Cheers,

  Dan