Re: Adding durations (for \after)

[Lukas-Fabian Moser]

Hi Joel,

Am 11.11.22 um 15:37 schrieb Joel C. Salomon:

> But if
>       that can be done from a Scheme function, it’s probably sufficient;
>       no need to tamper with Lilypond grammar.
>       
>       
>       To use Lucas’s example:
>       
>     
    [which was wrong, as I forgot the tied notes, sigh - but that
    doesn't matter.]
>       
> > r8 es2.-8 f2 ges8~
> >         
> >         8 as2.-8 8
> >         
> >       
>       
>       can
>       
>       
>           r8 es \duration_subtract{2.}{8} f2 …
>       
>       
>       be made to work?  (With whatever syntax.)
>       
>

This seems to be difficult, as it seems a scheme function returning a duration is not accepted in this position:

\version "2.23.5"

test = #
(define-scheme-function () ()
  (ly:make-duration 1 1))

{
  c'\test
}

% this works:
{
  c' $(test)
}

Which is a pity since this makes for a much less convenient syntax: It would look something like

c' $(duration_substract #{ 2. #} #{ 8 #})

As far as I know there's no LilyPond syntax equivalent to $(...) for a LilyPond scheme function...?

Lukas