Re: Possible bug with tempo mark spacing

[Saul Tobin]

It's not that special of a case. Hiding a staff containing notes and using a MarkLine are normal techniques for managing a large ensemble score.

From property-init.ly:

markLengthOn = {

  \override Score.MetronomeMark.extra-spacing-width = #'(0 . 1.0)

  \override Score.RehearsalMark.extra-spacing-width = #'(-0.5 . 0.5)

  % Raise as much as four staff-spaces before pushing notecolumns right

  \override Score.MetronomeMark.extra-spacing-height = #'(4 . 4)

  \override Score.RehearsalMark.extra-spacing-height = #'(4 . 4)

}

So it appears the relevant difference is setting some positive extra-spacing-height when setting extra-spacing-width. On further testing with ledger lines and placing a staff above the MarkLine, the right setting seems to be MetronomeMark.extra-spacing-height = #'(4 . 0), rather than #'(4 . 4).

I still wonder if there is a bug in the interaction with hidden staves. Staves shouldn't be affecting spacing on systems where they are dead.

On Fri, Dec 28, 2018 at 6:47 AM Malte Meyn <address@hidden> wrote:

Am 28.12.18 um 04:54 schrieb Saul Tobin:
>
> When using a context like MarkLine for tempo marks, if the staff
> immediately below the MarkLine is hidden but contains rhythmic activity,
> and if BOTH Y-offset and extra-spacing-width are overridden for
> MetronomeMark, the first rhythmic column will stretch to the width of
> the tempo mark.

That sounds like a really special case: MarkLine context AND hidden
Staff AND this staff contains notes (why is it hidden then?) AND
Y-offset is set AND extra-spacing-width is set …

>
> Is this a bug?

I’m not sure, maybe it’s expected behaviour in many cases and only your
case is so special that it looks buggy even if it’s consistent.

Using \markLengthOn instead of \override
MetronomeMark.extra-spacing-width = #'(0 . 0) works for me. Would that
help in your use case?

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