Yes, now it's clear.
Many thanks David, Cheers.
Paolo
Il giorno mar 22 gen 2019 alle ore 22:29 David Kastrup <d...@gnu.org> ha
scritto:
> Paolo Cantamessa <paolocantamess...@gmail.com> writes:
>
> > Hi David,
> > I use lilypond version "2.19.82".
>
> Check Issue 5327 in the issue tracker. Slated for 21.0.
>
> > I don't understand which type data is " * 2 " in this example { R1 * 2 }.
> > Char? String? Integer? Symbol? Whatever else?
> > Which mathematical operation should I do?
>
> * 2 is not a data type. 1*2 is a duration with a multiplier.
>
> >> > But I need of this and doesn't work:
> >> > { R1 * #(+ 2 3) }
>
> You could write
>
> { R $(ly:make-duration 0 0 (+ 2 3)) }
>
> which creates a duration of duration-log 0, with 0 dots, and a
> multiplier of 5 .
>
> --
> David Kastrup
>
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