# File lib/facet/lisp-format.rb, line 1494
        def initialize(*args)
          super(*args)
          if (colon_mod? or at_mod?) and @params.size > 0
            param_error 0, 'no parameters allowed together with' +
              ': and/or @ modifiers'
          end
          @clauses = []
          @default = -1
        end