Re: Alleviating issue #34

Am Do., 1. Jan. 2026 um 14:37 Uhr schrieb Dan Eble <[email protected]>:
>
> On 2025-12-31 05:42, Thomas Morley wrote:
> > At least for automatic repeats 'volta settings are entirely missing, why?
>
> Automatic repeats were enhanced to handle nested alternatives.  Manual
> repeats were not.
>
> Volta_engraver gets information about the music structure from
> volta-span-event:
>
>      void
>      Volta_engraver::boot ()
>      {
>        ADD_ACKNOWLEDGER (bar_line);
>        ADD_LISTENER (dal_segno);
>        ADD_LISTENER (fine);
>        ADD_LISTENER (volta_span);    //<<<<<<<<<<<<
>      }
>
> For backward compatibility, Volta_engraver also reads the repeatCommands
> context property and creates brackets that have a fixed relationship
> with automatic brackets.  This is one reason why the "Manual repeat
> marks" section of the NR begins with a cautionary note.
>
> I haven't reviewed your custom engraver, but an engraver concerned with
> repeat structure might listen for some of these events in addition to
> volta-span-event (from define-event-classes.scm):
>
>      (structural-event . (alternative-event
>                           coda-mark-event
>                           dal-segno-event
>                           fine-event
>                           section-event
>                           segno-mark-event
>                           volta-repeat-end-event
>                           volta-repeat-start-event))
>
> Summary: Engravers handling repeat structure should listen for events.
> If there is good reason to support the repeatCommands interface, they
> should also read repeatCommands, but repeatCommands does not support the
> same range of uses as automatic repeats.
> --
> Dan
>

Well, its not my engraver..., I may try to rewrite it, though.

Thanks for the insights,
  Harm