Re: [Lilypond-auto] Issue 645 in lilypond: \transposition + \partcombine = wrong MIDI output

[lilypond]

Comment #14 on issue 645 by address@hidden: \transposition + \partcombine =  
wrong MIDI output
http://code.google.com/p/lilypond/issues/detail?id=645

Oops, remnants of debug output: remove the = after \new Staff.  But at any  
rate, the transposition is a red herring.  It may seem to be related  
because the partcombiner takes specific notice of the transposition  
setting, but one can demonstrate the problem perfectly well _without_ any  
transposition: in the following excerpt, _both_ staves play with trumpet  
when the repetition count is 2.

\version "2.16.0"

untrumpet = \relative c'' {
  c4 c d d
}

trumpet = \relative c'' {
  % Setting the number of repetitions to 1 fixes the problem in the
  % MIDI output.  With the number set to 2, the trumpet invades
  % the "untrumpet" Staff in MIDI.

  \repeat unfold 2 \set Staff.midiInstrument = #"trumpet"

  R1
}

\score {
  <<
    \new Staff \untrumpet
    \new Staff \partcombine \trumpet \trumpet
  >>
  \layout{ }
  \midi{ }
}


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