# File lib/fpm/util.rb, line 378
  def copied_entries
    # TODO(sissel): I wonder that this entry-copy knowledge needs to be put
    # into a separate class/module. As is, calling copy_entry the same way
    # in slightly different contexts will result in weird or bad behavior.
    # What I mean is if we do:
    #   pkg = FPM::Package::Dir...
    #   pkg.output()...
    #   pkg.output()...
    # The 2nd output call will fail or behave weirdly because @copied_entries
    # is already populated. even though this is anew round of copying.
    return @copied_entries ||= {}
  end