Issue 1609 in lilypond: unpredictable change of voicing

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Critical

New issue 1609 by percival.music.ca: unpredictable change of voicing
http://code.google.com/p/lilypond/issues/detail?id=1609

While investigating the midi regtest "instability", I've extracted the  
following.  It's not quite yet Tiny, but I've spent the time I want to  
spend on it today, so hopefully somebody can pick it up and turn it into an  
actual Tiny example.

Output generated from 2.13.57 GUB  and  git master + metadata patch, but I  
really doubt that the patch did anything.


\version "2.13.57"

% it seems like you need both the _heads_ and _rest_ ?
\layout {
  \context {
    \Voice
    \remove "Note_heads_engraver"
    \consists "Completion_heads_engraver"
    \remove "Rest_engraver"
    \consists "Completion_rest_engraver"
  }
}

\score {
\new Staff <<
  \new Voice {
    \voiceOne
    r1
  }
  \new Voice \relative c {
    \voiceFour
     c'4 d e f
  }
  \new Voice {
    \voiceTwo
    r1
  }
  \new Voice {
    \voiceThree
    r1
  }
  >>
  \layout {}
  \midi {}
}

Attachments:
        foo-2.13.57.pdf  20.9 KB
        foo-git.pdf  20.4 KB