On 17/09/2023 00:11, Jean Abou Samra wrote:
Is is possible to conditionally execute the #@ expression based on
whether the 'textArray' variable is bound?
\version "2.24.2"
textArray = <<
{ \lyricmode { \set stanza = "1" fo -- o bar } }
{ \lyricmode { \set stanza = "2" fo -- o bar } }
\score {
<<
\new Voice = "soprano" { c'1 1 1 }
#@(if (defined? 'textArray)
(map (lambda (mus) #{ \new Lyrics { \lyricsto "soprano" { #mus } }
#})
(ly:music-property textArray 'elements))
'())
>>
}
Thank you very much Jean.
I was missing the '().
Without the empty '() in the else branch, when the if condition is false
nothing is returned to the #@ operator.
