Re: [Lilypond-auto] Issue 3223 in lilypond: Document known issue with Ottava bracket in one voice

[lilypond]

Comment #3 on issue 3223 by address@hidden: Document known issue with  
Ottava bracket in one voice
http://code.google.com/p/lilypond/issues/detail?id=3223

I suggest it be normal text in NR1.1.3, rather than "known issues and  
warnings" because there is nothing troublesome or surprising about  
LilyPonds normal behavior in having the ottava indication apply to all  
voices on the staff.  Only in exceptional cases can the ottava apply to  
just one voice without ambiguity.  The \ottava shortcut does not handle  
those exceptional cases, but normal LilyPond commands can.

The workaround suggested in issue 1473 puts the octavation commands in the  
affected voice only:

%{If you have more than one voice on the staff, setting octavation in one  
voice
will transpose the position of notes in all voices for the duration of the
ottava bracket. If the ottavation is only intended to apply to one voice,
the middleCPosition and ottava bracket may be set explicitly.  Below, the
treble clef usually has middleCPosition -6, six positions below the center
line, so in the 8va portion middleCPosition is 7 positions, one octave,  
lower
still. %}

  \new Staff << {
    r4

    \set Staff.ottavation = #"8va"
    \once \override Staff.OttavaBracket #'direction = #UP
    \set Voice.middleCPosition = #(+ -6 -7)  %  = #-13
    f''' r g''' |

    \unset Staff.ottavation
    \unset Voice.middleCPosition
    <e'' a''>1
  } \\ {
    <c' e'>1~ q
  } >>

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