dup

# File lib/rake/cloneable.rb, line 8
    def dup
      sibling = self.class.new
      instance_variables.each do |ivar|
        value = self.instance_variable_get(ivar)
        new_value = value.clone rescue value
        sibling.instance_variable_set(ivar, new_value)
      end
      sibling.taint if tainted?
      sibling
    end