In transcribing renaissance polyphony, I like to do three things:
1. represent the final "longa" of a section with a single note,
rather than a series of notes tied over barlines, while other
parts continue twiddling away;
2. use \RemoveEmptyStaves to produce a Frenched score; and
3. display bar numbers on the top (remaining) staff.
I recognise that there are valid objections to combining 1 & 3, but
please indulge me...
The following (almost) MWE, illustrates the default behaviour. I'd like
to remove the superfluous barline at bar "4" in the upper part (only).
By globally replacing "%{" with "%%{" you can uncomment my usual way of
achieving the objective.
This technique, however, feels really clumsy by Lilypond standards.
Have I overlooked a better way?
\version "2.19.40"
cantusVoice = {
c''1 \break R1 \break
%{
\omit \time 4/2 % invisibly change this to accommodate breve
%}
\breve
\bar "|."
}
altusVoice = {
%{ % Suppress bar numbers until RemoveEmptyStaffContext
% makes them necessary:
\override Staff.BarNumber.break-visibility = ##(#f #f #f)
%}
c'1
%{ % and show bar numbers again, when the upper line
disappears.
\temporary \override
Staff.BarNumber.break-visibility = ##(#f #f #t)
%}
1
%{
\revert Staff.BarNumber.break-visibility
%}
1 1
\bar "|."
}
\score {
\new ChoirStaff <<
\new Staff
%{
\with { \consists "Bar_number_engraver" }
%}
{ \cantusVoice }
\new Staff
%{
\with { \consists "Bar_number_engraver" }
%}
{ \altusVoice }
>>
\layout {
indent = 0
ragged-right = ##t
\context {
\Score
%{
\remove "Timing_translator"
\remove "Default_bar_line_engraver"
%}
}
\context {
\Staff
%{
\consists "Timing_translator"
\consists "Default_bar_line_engraver"
%}
\RemoveEmptyStaves
}
}
}
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