# File lib/fpm/package.rb, line 350
  def to_s(fmt=nil)
    fmt = "NAME.EXTENSION" if fmt.nil?
    return fmt.gsub("ARCH", to_s_arch) \
      .gsub("NAME",         to_s_name) \
      .gsub("FULLVERSION",  to_s_fullversion) \
      .gsub("VERSION",      to_s_version) \
      .gsub("ITERATION",    to_s_iteration) \
      .gsub("EPOCH",        to_s_epoch) \
      .gsub("TYPE",         to_s_type) \
      .gsub("EXTENSION",    to_s_extension)
  end