The following snippet shows an unexpected behaviour. If proportional spacing is enabled, the stems become unevenly spaced, but only when using \change Staff. With proportional spacing not enabled, there is no problem.
What is going on here? I am wanting proportional notation for the score, and even stem spacing for bars like this. Any enlightenment most appreciated.
\version "2.17.18"
upper = \relative c'' {
\time 1/8
\stemUp
\once \override TupletBracket.bracket-visibility = ##f
\once \override TupletNumber.stencil = ##f
\tuplet 10/1 {
c8[
\change Staff = bass d,,
\change Staff = treble e''
\change Staff = bass f,,
\change Staff = treble g''
\change Staff = bass a,,
\change Staff = treble b''
\change Staff = bass c,,
\change Staff = treble b''
\change Staff = bass a,,]
}
}
lower = \relative c {
\clef bass
\time 1/8
s8
}
\score {
\new StaffGroup {
<<
\new Staff = "treble" { \upper }
\new Staff = "bass" { \lower }
>>
}
\layout {
\context {
\Score
\accidentalStyle Score.dodecaphonic
proportionalNotationDuration = #(ly:make-moment 1/20)
}
}
}