Re: Edition Engraver and staff changes

[Engraver]

Hallo Jan-Peter,

Thanks for the clarification. I had hoped it would be possible in some 
other way. Hopefully it will be possible in a future version of the EE. 
Until then I'll do it the old-fashioned way (manually).

Auke


Op 15 augustus 2018 07:50:57 schreef Jan-Peter Voigt <address@hidden>:

Hello Auke,

yes you are right, \change Staff cannot be used with the EE. Some time
ago I tried to make it possible, but it results in a fatal crash of
lilypond if the EE sends such an event. I add this to the issues.

Jan-Peter




Am 14.08.2018 um 21:51 schrieb Partitura Organum:
Hello all,

In organ music it is quite common that one of the hands plays a part
that is either to high or to low for the  'common' clefs, but that can
be perfectly rendered with the alto clef. Not many organists are still
able to read the alto clef, so I usually make to versions, one with the
alto clef, and one with the part distributed over two staves (see images
for an example).








Since the notes do not change, only the way they are rendered, I thought
it would be a good use case for the edition engraver.  Problem however
is that the Edition Engraver references contexts and I cannot tell one
context to become another. The command 'change Staff' cannot be used
with the Edition Engraver. Below is my (not so minimal) not-working
example. Is there a way to tell the Edition Engraver that a part should
switch Staff? Or is the Edition Engraver not suitable for my use case
(which means that I should continue to do it manually)?


%======================
\include "/oll-core/package.ily"
\loadPackage edition-engraver
%\addEdition alto
\addEdition nonalto
\consistToContexts #edition-engraver Score.Staff.Voice

righthand = \relative c''{
a2 a |
b1 |
c4 b a2\trill
}

lefthand = \relative c'{
f8 e d c d c b a |
gis8 a b c d e fis gis |
a8 a, b cis d d, e fis |
}

pedal = \relative c {
b2 d  |
e1  |
a,2 c
}

lefthandnonalto=\relative c'{
\clef bass
\change Staff="right" \voiceTwo f8 e d c d c \change Staff="left"
\oneVoice b a |
gis a b c \change Staff="right" \voiceTwo d e fis gis |
a \change Staff="left" \oneVoice a, b cis d d, e fis |
}


\editionMod alto 1 0/4 left.Voice.A \clef alto

\editionMod nonalto 1 0/4 right.Voice.A \voiceOne
\editionMod nonalto 1 0/4 left.Voice.A \change Staff="right"
\editionMod nonalto 1 0/4 left.Voice.A \voiceTwo

\score {
<<
\new Staff = "right" \with {
\editionID right
}
\new Voice {  \righthand }

\new Staff = "left" \with {
\editionID left
}
%\new Voice { \lefthand}
\new Voice { \lefthandnonalto}

\new Staff {
\clef bass \pedal
}
> >
}
%===========================================

Regards,
Auke



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