collision beam with staff-crossing beam

[Werner LEMBERG]

[originally sent to lilypond-devel, resent to this list after
 recommendation, with slight modifications]


Folks,


consider this real-life example (omitting the unimportant voices).

  <<
    \new Staff = "R" \relative c' {
      \voiceTwo
       d16[ b
        \change Staff = "L" \stemUp
        g
        \change Staff = "R" \stemDown
        b d b]
    }

    \new Staff = "L" \relative c' {
      \clef "bass"
      \voiceOne
      g8[ s g]
    }
  >>

There is an ugly clash between the two beams.  Due to the cross-staff
beam, this is sort-of expected.

What can I do to improve the formatting?  Note that globally
increasing the distance between the staves is not a possible solution
since this would ruin the layout of the whole piece.


     Werner