Thanks again.
Now, from what I see, I can extract if #mus is a Beam
with (ly:music-property mus 'name) --> BeamEvent
After that, how can I set, inside the same function you wrote, a variable
with the beam-thickness value of the corresponding Beam?
something like (pseudo code): (set! myVar current-value-of-beam-thickness )
On Wed, Dec 18, 2019 at 5:14 AM Aaron Hill <lilyp...@hillvisions.com> wrote:
> On 2019-12-17 6:01 pm, Paolo Prete wrote:
> > And thanks again to the Scheme-master Aaron.
>
> I appreciate the kind words, though I doubt my experience rises to the
> level of "master".
>
> > One last thing:
> >
> > how can I arrange that function so to obtain output-attributes =
> > output-attributes + id ?
> >
> > For example: if output-attributes is (('a' . 'aa') ('i' . 'ii')) it
> > must
> > become: (('a' . 'aa') ('i' . 'ii') ('id' . 'foobar_1'))
>
> Where or how are the other output-attributes being set? It is my
> understanding that output-attributes is unset by default, so any
> \override or \tweak would not need to worry about existing definitions.
>
> That said, consider this pattern:
>
> %%%%
> \version "2.19.83"
> { \tweak Accidental.output-attributes.id 123 bes'4 }
> %%%%
>
> Keep in mind this only *adds* a new key-value pair to the alist; it does
> not change an existing entry with the same key.
>
>
> -- Aaron Hill
>
>
