emacs mode indentation

[Rune Zedeler]

The following example is indented with the emacs mode.
Problems with double scripts at end of block.

\score {
    \context Voice \notes \relative c' {
        < c d e f \sustainUp \sustainDown >
          < c d e f \sustainUp \sustainDown >
            < c d e f \sustainUp \sustainDown >
          }
        }