Le vendredi 05 mai 2023 à 11:02 -0700, Eric Benson a écrit :
> Would there be a way to conditionally include a \pageBreak at top level? E.g.
> \if #(some-predicate) { \pageBreak }
Try
```
$(if (some-predicate) #{ \pageBreak #})
```
Generally speaking, LilyPond doesn't reinvent the wheel through a full-fledged
programming language of its own, but just reuses its host language, Scheme.
Reading these pages might help:
[https://extending-lilypond.gitlab.io/en/scheme/conditions.html#if-syntax](https://extending-lilypond.gitlab.io/en/scheme/conditions.html#if-syntax)
[https://extending-lilypond.gitlab.io/en/extending/intro.html#inserting-scheme-inside-lilypond](https://extending-lilypond.gitlab.io/en/extending/intro.html#inserting-scheme-inside-lilypond)
[https://extending-lilypond.gitlab.io/en/extending/lily-and-scheme.html](https://extending-lilypond.gitlab.io/en/extending/lily-and-scheme.html)
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