anchor.diff:  
   
   a_expr_compare
  -   : a_expr_like ((LT | GT | EQUAL | LESS_EQUALS | GREATER_EQUALS | NOT_EQUALS) a_expr_like | (subquery_Op sub_type (select_with_parens | OPEN_PAREN a_expr CLOSE_PAREN)) /*21*/
  +   : a_expr_like ((LT | GT | EQUAL | LESS_EQUALS | GREATER_EQUALS | NOT_EQUALS) a_expr_like |subquery_Op sub_type (select_with_parens | OPEN_PAREN a_expr CLOSE_PAREN) /*21*/
   
      )?
      ;
  
positive.code:    ;
  
  ruleactionmulti
     : ruleactionmulti SEMI ruleactionstmtOrEmpty
     | ruleactionstmtOrEmpty
     ;
  
  ruleactionstmt
  
negative.code:    ;
  
  transform_type_list
     :FOR TYPE_P typename (COMMA FOR TYPE_P typename)*
     ;
  
  opt_definition
  