While going through Jean's Extending LilyPond tutorial...
https://extending-lilypond.gitlab.io/en/scheme/expressions.html
...I came upon instructions to type this _expression_ into the scheme-sandbox:
(skip-of-length #{ { c'8 d' e' f' e' d' } #})
However, it produced this error:
$1 = #<Prob: Music C++: Music((elements #<Prob: Music C++: Music((duration . #<Duration 1*3/4 >))((display-methods #<procedure method (rest)>) (name . SkipEvent) (iterator-ctor . #<procedure ly:rhythmic-music-iterator::constructor ()>) (types event rhythmic-event skip-event)) >
))((display-methods #<procedure new-method (expr)> #<procedure new-method (expr)> #<procedure new-method (expr)> #<procedure new-method (expr)> #<procedure new-method (expr)> #<procedure method (chord)>) (name . EventChord) (iterator-ctor . #<procedure ly:event-chord-iterator::constructor ()>) (length-callback . #<procedure ly:music-sequence::event-chord-length-callback (_)>) (to-relative-callback . #<procedure ly:music-sequence::event-chord-relative-callback (_ _)>) (types event-chord simultaneous-music)) >
Is this a bug or something I have done?
LilyPond 2.24.1 installed from the Zip file, Ubuntu 22.04.2.