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Identifier List etc.


idlist   :  IDENTIFIER COMMA idlist
                          { $$ = cons($1, $3); }
         |  IDENTIFIER    { $$ = cons($1, NULL); }
         ;
vblock   :  VAR varspecs block       { $$ = $3; }
         |  block
         ;
varspecs :  vargroup SEMICOLON varspecs
         |  vargroup SEMICOLON
         ;
vargroup :  idlist COLON type
                            { instvars($1, $3); }
         ;
type     :  simpletype
         | ... ;
simpletype :  IDENTIFIER   { $$ = findtype($1); }
         | ... ;