Hi,
LilyPond incorrectly compresses consecutive, proportionally spaced measures
when the following conditions hold:
1. first measure in the sequence sets \proportionalNotationDuration; and
2. last measure in sequence is followed by \newSpacingSection; and
3. all measures in sequence carry \noBreak commands.
%%% BEGIN SPACING BUG %%%
\version "2.19.82"
\layout {
indent = #0
ragged-right = ##t
}
\new Staff
\with
{
\remove Time_signature_engraver
}
{
\time 2/8
\set Score.proportionalNotationDuration = #(ly:make-moment 1 32)
c'4
^ \markup \with-color #red "First three measures aren't wide enough"
\noBreak
c'4
\noBreak
c'4
\noBreak
\newSpacingSection
c'4
c'4
c'4
c'4
c'4
}
%%% END %%%
Output looks like this:
[image: no-break-spacing-bug.png]
Correct output looks like this:
%%% BEGIN NON-BUG %%%
\version "2.19.82"
\layout {
indent = #0
ragged-right = ##t
}
\new Staff
\with
{
\remove Time_signature_engraver
}
{
\time 2/8
\set Score.proportionalNotationDuration = #(ly:make-moment 1 32)
c'4
c'4
c'4
\newSpacingSection
c'4
c'4
c'4
c'4
c'4
}
%%% END %%%
Visual:
[image: correct-output.png]
Note, again, that *all* measures spaced incorrectly must carry a \noBreak
command; removing *any one* of the three \noBreak commands in the bug
snippet causes the bug to disappear.
Trevor.
--
Trevor Bača
www.trevorbaca.com
soundcloud.com/trevorbaca
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