class Sass::Util::CrossPlatformRandom

Ruby 1.8 doesn’t support an actual Random class with a settable seed.

def initialize(seed = nil) 

def initialize(seed = nil)
  if Sass::Util.ruby1_8?
    srand(seed) if seed
  else
    @random = seed ? ::Random.new(seed) : ::Random.new
  end
end

def rand(*args) 

def rand(*args)
  return @random.rand(*args) if @random
  Kernel.rand(*args)
end