[Ranger-users] ranger: bash code example in man page doesn't work

[ping]

I want to have range to continue exactly where I left off when re-run, but these code from the man page seems doesn't work.

   Bash: cd to last path after exit
       This is a bash function (for ~/.bashrc) to change the directory to the last visited one after ranger quits.  You can always type "cd -" to go back
       to the original one.

I put these into my .bashrc

        function ranger-cd {
          tempfile='/tmp/chosendir'
          /usr/bin/ranger --choosedir="$tempfile" "${@:-$(pwd)}"
          test -f "$tempfile" &&
          if [ "$(cat -- "$tempfile")" != "$(echo -n `pwd`)" ]; then
            cd -- "$(cat "$tempfile")"
          fi
          rm -f -- "$tempfile"
        }

        # This binds Ctrl-O to ranger-cd:
        bind '"\C-o":"ranger-cd\C-m"'


am I missing anything here?