# File lib/sass/script/funcall.rb, line 56
      def to_sass(opts = {})
        args = @args.map {|a| a.to_sass(opts)}.join(', ')
        keywords = Sass::Util.hash_to_a(@keywords).
          map {|k, v| "$#{dasherize(k, opts)}: #{v.to_sass(opts)}"}.join(', ')
        if self.splat
          splat = (args.empty? && keywords.empty?) ? "" : ", "
          splat = "#{splat}#{self.splat.inspect}..."
        end
        "#{dasherize(name, opts)}(#{args}#{', ' unless args.empty? || keywords.empty?}#{keywords}#{splat})"
      end