Handling of Ties in chords individually?

[Roland Goretzki]

Hi at all.

I'm still using lilypond 2.2.0, and I wonder, wether it is possible to
determine at tied chords explicitely, which direction every tie shall
have.

To demonstrate that this is necessary, here a little piece of code:

  \include "deutsch.ly"
  \score {
    \context Staff \notes\relative c'' {
      \key c \major
      g4 g' cis, b g' g, g'
      <g, b cis g'> ~
      <g b cis g'>
      g' cis, b g1 
    } 
  }

The second tie (from bottom to top) between 'b' and 'b' would look much
better, if its direction would be down. The other ties should behold
their directions.

With \tieDown, \tieUp or \tieBoth I can't get a good result.

Any ideas?
Or perhaps a solution to this is planned for a later lilypond version?

Thanks and Best Regards           Roland