While incorporating this code in another score I came across a layouting
problem: if the tempo name is sufficiently long, then the first measure
number will be rendered _above_ the tempo indicator.
This problem only occurs when \omitParenthesizedBarNumbers is invoked in the
layout block.
Probably it's a problem of prioritizing markup scripts, but I have no clue
yet on how to fix this.
Here's a snippet illustrating this issue:
%%% BEGIN snippet
\version "2.16.0"
omitParenthesizedBarNumbers =
\override Score.BarNumber #'after-line-breaking =
#(lambda (grob)
(let* ((text (ly:grob-property grob 'text))
(text-arg (caadr text))
(nmbr? (string->number text-arg)))
(if (not nmbr?)
(ly:grob-suicide! grob)
#f)))
\score {
\new Staff {
\relative c' {
\key g \major
\time 3/4
\tempo "Allegretto"
\clef "bass"
\compressFullBarRests
\override MultiMeasureRest #'expand-limit = #3
\override Score.BarNumber #'break-visibility = #end-of-line-invisible
\set Score.barNumberVisibility = #(every-nth-bar-number-visible 1)
\set Score.alternativeNumberingStyle = #'numbers-with-letters
\partial 4
g8.-\upbow-\pp-1 (a16_\markup{\italic con grazia})
b8.->-3 ( ais16 ) b8.-> ( ais16 ) b8.-> ( ais16 )
\break
}
}
\layout {
\context {
\Score
\omitParenthesizedBarNumbers
}
}
}
%%% END snippet
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