Hi Vaughan,
you have to wrap the scheme-expression in another \bookpart{} statement
and use "instant" scheme expressions with a '$'-sign for this to work:
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
...
\book {
\bookpart {
$(if
(string-contains compileTheseMovements "1")
FirstMovement
EmptyBookpart)
}
\bookpart {
$(if
(string-contains compileTheseMovements "2")
SecondMovement
EmptyBookpart)
}
} % \book
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
HTH
Am 25.02.2016 um 00:48 schrieb Vaughan McAlley:
Greetings,
I’d like to be able to specify at the top of my main score which
movements are printed. I can store a \bookpart in a variable, but I
can’t seem to return it from a scheme expression. Is there a bookpart
equivalent to define-music-function that I haven’t found?
Vaughan
%%%%%%%%%%%%%%%%%%
\version "2.18.2"
compileTheseMovements = "2" % change to "12" to compile both movements
EmptyBookpart = \bookpart {}
FirstMovement = \bookpart {
\tocItem "First Movement"
\header {
title = "Multi-movement piece"
composer = "LvB"
subtitle = "First Movement"
}
\score {
{ \time 2/4 r8 g' [ g' g'] es'2 }
\layout {}
\midi {}
}
}
SecondMovement = \bookpart {
\tocItem "Second Movement"
\header {
title = ##f
subtitle = "Second Movement"
}
\score {
{ \time 3/8 \partial 8 es16. as32 c'8 c'16. bes32 as16. c'32 f4 }
\layout {}
\midi {}
}
}
\book {
#(if
(string-contains compileTheseMovements "1")
FirstMovement
EmptyBookpart)
#(if
(string-contains compileTheseMovements "2")
SecondMovement
EmptyBookpart)
%{
% This works fine
\FirstMovement
\SecondMovement
%}
} % \book
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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