# File lib/sass/script/funcall.rb, line 56
      def to_sass(opts = {})
        arg_to_sass = lambda do |arg|
          sass = arg.to_sass(opts)
          sass = "(#{sass})" if arg.is_a?(Sass::Script::List) && arg.separator == :comma
          sass
        end

        args = @args.map(&arg_to_sass).join(', ')
        keywords = Sass::Util.hash_to_a(@keywords).
          map {|k, v| "$#{dasherize(k, opts)}: #{arg_to_sass[v]}"}.join(', ')
        if self.splat
          splat = (args.empty? && keywords.empty?) ? "" : ", "
          splat = "#{splat}#{arg_to_sass[self.splat]}..."
        end
        "#{dasherize(name, opts)}(#{args}#{', ' unless args.empty? || keywords.empty?}#{keywords}#{splat})"
      end