Hi Paul,
> To get a single bar-letter but as you mention in the original post the
> challenge is automating it.
> If I could get the answer to the question in this thread I could at least
> simplify the code and maybe have a complete solution.
Here’s a way hacking volta repeats:
%%% SNIPPET BEGINS
\version "2.25.24"
\layout {
system-count = 3
}
altBNs = {
\set Score.alternativeNumberingStyle = #'numbers-with-letters
\set Score.startRepeatBarType = "|"
\set Score.endRepeatBarType = "|"
}
regBNs = {
\unset Score.alternativeNumberingStyle
\undo \omit Score.VoltaBracket
\set Score.startRepeatBarType = ".|:"
\set Score.endRepeatBarType = ":|."
}
music = \relative c' {
\override Score.BarNumber.break-visibility = ##(#f #t #t)
\set Score.currentBarNumber = #46
c4 d e f
c4 d e f |
\altBNs
\repeat volta 5 {
{ c4 d e f }
\omit Score.VoltaBracket
\set Score.currentBarNumber = #48
\alternative {
{ c4 d e f }
{ c4 d e f }
{ c4 d e f }
{ c4 d e f }
{ c4 d e f }
}
}
\regBNs
c1
\repeat volta 2 {
c1
\alternative {
{ c1 }
{ c1 }
}
}
c1 \bar "|."
}
{ \music }
%%% SNIPPET ENDS
Not perfect by any stretch, but better than my first hack! :)
Even this one can be automated further [by having the function “subdivide” the
music by measure and do the alternative-setting automatically]… I just haven’t
had the time to figure out the right incantation.
> It's interesting that numbers-with-letters was added to Lily without
> bar-letters.
> I would also like to be able to make the letters in numbers-with-letters
> upper case.
Maybe submit a feature request? This seems like something that Someone Smart™
(David, Tina, Jean, Lukas, etc.) could do fairly easily, if they felt inspired
to do so.
In the meantime, I’ll see if I can up my Scheme-fu enough to build a
fully-automated music function or engraver that will do the job for you.
Best,
Kieren.
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