module InstallRenamed def install_p src, new_basename = nil super do |src, dst| dst += "/#{File.basename(src)}" if File.directory? dst append_default_if_different(src, dst) end end def cp_path_sub pattern, replacement super do |src, dst| append_default_if_different(src, dst) end end private def append_default_if_different src, dst if File.file? dst and !FileUtils.identical?(src, dst) dst += ".default" end dst end end