The blog link is missed, appended here:
https://findlab.github.io/2020/11/15/music-layout-language/
On Sun, Nov 15, 2020 at 6:20 PM K.L. <k.l.lam...@gmail.com> wrote:
> Hi all.
>
> For a multiple voices music score, all voices share the same repeat
> positions. Such as:
>
> <<
>> {
>> \repeat volta 2 { g1 g g g }
>> \repeat volta 2 { g g g g }
>> }
>> {
>> \repeat volta 2 { c1 c c c }
>> \repeat volta 2 { c c c c }
>> }
>> >>
>
>
> The repeat layout information occurred 2 times, that is waste and
> error-leading.
>
> Considering change it like this:
>
> \repeat layout "2*[1..4], 2*[5..8]" <<
>> {
>> g1 g g g g g g g
>> }
>> {
>> c1 c c c c c c c
>> }
>> >>
>
>
> We can define a new DSL to express all kinds of repeat types, including
> volta, volta-alternative and *D.C. al Fine* and so on. For some examples:
>
> [image: image.png]
> code: *1, 2, 3, 4*
> or: *1..4*
>
> [image: image.png]
> code: *2*[1, 2], 3*
>
> [image: image.png]
>
> code: *2*[1, 2]{3, 4}*
>
> [image: image.png]
> code: *<[1, 2], 3, 4>*
>
> Via this, exact MIDI performing for D.C. & D.S. can also be done.
>
> I have implemented a basic grammar parser in my project to facilitate
> score edition. See the demo video
> <https://www.youtube.com/watch?v=uUOV-Kjrt4M>. And my blog to descript
> details.
>
>>
> Beside measure indices, we can consider adding some grammar to express
> partial measure, like '1 + 1/4'. But the upbeat beginning music's measure
> index rule seems a little ambiguous. We should clarify how the measure
> index works in any situation first.
>
> Glad to hear any ideas.
>
>
