Hi Don,
Here's a way to do it I believe, simplifying your sample.
I personally don't have any musical objections to this - it's perfectly clear, and clarity of intent what I am always seeking. Musicians will read this just fine I reckon.
Andrew
== snip
\version "2.19.56"
treble = {
\time 2/4
\set Score.alternativeNumberingStyle = #'numbers-with-letters
\repeat volta 2 {
c' d' e' d'
}
\alternative {
{ c'8 d' e' d' }
{ c'8 d' d' s }
}
\override Score.BarNumber.break-visibility = ##(#f #f #f)
\repeat volta 2 {
\partial 8
c'8
\override Score.BarNumber.break-visibility = ##(#t #t #t)
\set Score.currentBarNumber = #4
c'4 d'
e' d'
c'8 c' c'
}
}
\score {
\new Staff \treble
\layout {
\context {
\Score
\override BarNumber.break-visibility = ##(#t #t #t)
}
}
}
== snip