Am Mo., 13. Juni 2022 um 19:39 Uhr schrieb William Rehwinkel via
bug-lilypond <bug-lilypond@gnu.org>:
>
> Dear Lilypond,
>
> After not being able to find any bugs discussing this in the tracker, I
> would like to share the following miniature example which I believe
> shows that dashed bar-lines are misplaced in vertically compressed
> scores (using default lilypond spacing settings). After testing in
> 2.22.2 and 2.23.9, the same behavior persists. The dashed lines should
> have rendered in the same way as the double bar and dotted bar did, but
> it does not connect between the two Piano Staves and extends above the
> top staff. Note that if the spacing of systems is manually expanded, via
> "\paper{ systems-per-page = 4 }", for example, the dashed bar-lines are
> rendered properly.
>
> Thank you,
>
> -William
>
> ---
>
> \version "2.23.9" % "2.22.2"
> \score {
> <<
> \new PianoStaff <<
> \new Staff \repeat unfold 32 { 8 8 8 8 \bar "!" 8 8 8 8
> \bar "||" 8 8 8 8 \bar ";" 8 8 8 8 }
> \new Staff \repeat unfold 32 { 8 8 8 8 8 8 8 8 8 8 8 8 8 8
> 8 8 }
> >>
> \new Staff \repeat unfold 32 { 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 }
> >>
> }
Confirmed.
Here a more tiny example:
mus = {
\override Staff.BarLine.bar-extent =
#(lambda (grob) (interval-widen (ly:bar-line::calc-bar-extent grob) 0.5))
f'4 \bar "!" f''4
}
\new PianoStaff
<<
\new Staff \mus
\new Staff \mus
>>
Actually a dashed bar line uses dashed-line _or_ a line constructed
from filled boxes, depending on certain conditions.
Iirc, this is due to wished different behaviour if BarLine.color is
different from StaffSymbol.color. I may be wrong here though...
If a _SpanBar_ is dashed with filled boxes the result needs to be
moved between the staves.Though, this is a very rare case and not
covered by any regtest afaict, thus it was undetected so far.
Many thanks for your report.
On it ...
Cheers,
Harm
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