Re: \fine, pre-process-in-final-translation-timestep & co.

[Jean Abou Samra]

> Le 9 juil. 2022 à 18:28, Dan Eble <dan@lyric.works> a écrit :
> 
> Are you serious enough about this suggestion to propose syntax that you would 
> consider acceptably explicit and that could actually be implemented?



To be clear, I’m not trying to find syntax acceptably explicit for me; this is 
not a judgement. I just wonder if we can find syntax that is explicit, period, 
i.e. syntax that lets the user tell which events that should be kept at \fine 
and which that shouldn’t.

My understanding is that there are two use cases for \fine right now: using it 
as a kind of memorable shorthand for \bar "|." at the end of the piece, and 
using it in \repeat segno to mark the end of the played music so that engraving 
can print "fine" and (unfoldRepeats-ed) MIDI can stop.

The problem may be simpler if we accept to make separate commands for these two 
uses cases. For example, instead of

\repeat segno 2 {
  …
  \volta 2 \fine
  …
}

one can imagine

\repeat segno 2 {
  …
  \volta 1 {
    …
  }
}

Repeats are complicated and I didn’t give this much thought, so it might make 
no sense, but you see the basic idea: \unfoldRepeats would be able to unfold 
the music in a way that doesn’t need interrupting translation with an event in 
the middle. In the above, which … an event at the point of fine was entered in 
determines whether it is included at the unfolded end.