# File lib/packaging/util/date.rb, line 6
    def timestamp(separator=nil)
      if s = separator
        format = "%Y#{s}%m#{s}%d#{s}%H#{s}%M#{s}%S"
      else
        format = "%Y-%m-%d %H:%M:%S"
      end
      Time.now.strftime(format)
    end