# File lib/sass/script/functions.rb, line 2366
    def random(limit = nil)
      generator = Sass::Script::Functions.random_number_generator
      if limit
        assert_integer limit, "limit"
        if limit.to_i < 1
          raise ArgumentError.new("$limit #{limit} must be greater than or equal to 1")
        end
        number(1 + generator.rand(limit.to_i))
      else
        number(generator.rand)
      end
    end