Am 15.01.2011 18:06, schrieb David Kastrup:
David Kastrup<d...@gnu.org> writes:
[...]
ud=#(define-music-function (parser location low high) (ly:music? ly:music?)
#{ \change Staff = "down" $low \change Staff = "up" $high #})
global={ \key es\major
\time 2/4 }
\new StaffGroup
<< \set StaffGroup.beatStructure = #'(2)
\new Staff = "up" { \global s2*3 }
\new Staff = "down" { \global
\relative c' { \repeat unfold 2 { \ud<c es f>8<g' bes c> }
\repeat unfold 2 { \ud<c, es f> <as' bes c> }
\repeat unfold 2 { \ud<c, es f> <g' bes c> } } }
Great, this makes the notation much easier. I will use it exactly in
this way.
But there is something I don't understand. In your music-function you
find a
\change Staff = "down" $low .....
When I write this outside a function I get a warning when the "down"
staff is the current staff. But when I use the function I don't:
----<>-----<>----<>-----<>----<>-----<>----<>-----<>----<>-----<>----n
\version "2.13.31"
ud=#(define-music-function (parser location low high) (ly:music? ly:music?)
#{ \change Staff = "down" $low \change Staff = "up" $high #})
global={ \key es\major
\time 2/4 }
\new StaffGroup
<<
\set StaffGroup.beatStructure = #'(2)
\new Staff = "up" { \global s2*2 }
\new Staff = "down" { \global
\relative c' {
% this 'change Staff' is also found in the \ud function
\change Staff = "down" c8 \change Staff = "up" c8
\repeat unfold 2 { \ud c8 c8 }
s4 } }
>>
----<>-----<>----<>-----<>----<>-----<>----<>-----<>----<>-----<>----
| <string>:1:69: Warnung: es kann kein Kontext zum Umschalten
| gefunden werden
| parseStringResult = \notemode { \change Staff = "down"
| \lilyvartmpe
| \change Staff = "up" \lilyvartmpf }
Helge
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