cross-staff beams

[Martin Tarenskeen]

Hi,

Please try the following example, which is rendered less than optimal 
using 2.13.40. Do you agree Lilypond should be able to 
do better than this ? Is it worth a bug report ?

%---------------------8<-------------------------

\version "2.13.40"

upper = \relative c' {
  \clef treble
  \time 2/4
  \set Staff.beatStructure = #'(2)
  e4 e | e e |
}

lower = \relative c {
  \clef bass
  \time 2/4
  R2 |
  \change Staff = "up" e'8
  \change Staff = "down" a,,
  \change Staff = "up" e''
  \change Staff = "down" a,, |
}

\score {
  \new PianoStaff <<
    \new Staff="up" \upper
    \new Staff="down" \lower
  >>
  \layout {}
}

%------------------------------8<--------------------------------------