Re: Using change staff in tight spaces leads to wrongly positionednotes with duplet in crossing notes

[Thomas Morley]

2013/6/10 Keith OHara <address@hidden>:
> On Mon, 10 Jun 2013 11:23:08 -0700, Phil Holmes <address@hidden> wrote:
>
>> ----- Original Message -----
>> From: "Keith OHara"
>> Subject: Re: Using change staff in tight spaces leads to wrongly
>> positionednotes with duplet in crossing notes
>>
>>
>>> Phil Holmes <email <at> philholmes.net> writes:
>>>
>>>> Should I just go ahead and raise a bug report?
>>>>
>>> If
>>
>> only it didn't do this?
>
>
> If only I could use a mouse.
>
> You might give the bug-list a couple days to help minimize the example,
> but I would think non-minimal bug-reports are fine if they isolate the
> problem.  In this example the second measure with different rhythm that
> avoids the problem might be a useful clue.
>
> If I were to try to fix this I would start by minimizing, because I would
> add print statements to show me the key distances set by each rule that
> the note spacing applies, and compare with what I expected them to be.
>
> Probably it could be one measure, with a short \paper {line-width or
> line-length or whatever}.   Maybe a kneed beam on a single staff also
> shows the problem.  Probably the interleaved rhythm is key
> 1       2       3       1
> 1  2  3  4  5  6  7  8  1
> but maybe not the tuplets.  Just to be sure the tuplet math isn't causing
> trouble I'd try it with equivalent interleaving rhythm in 24/16 time
> using dotted notes.
>
> It might be the same cause as issue 3304, or we might be missing a
> rarely-needed rule that stems should be in order, even in emergencies
> of tight spacing.  I think it is a bug, not a missing rule, because
> the sequence of notes  fis b a  are right on top of each other, while
> the other notes do not look like they are having an emergency of tight
> spacing.
>
>
>
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Hi,

here a small, boiled down code attaching output from 2.14.2, 2.16.2 and 2.17.19

%\version "2.17.19"

\paper { line-width = 50 }

\new PianoStaff <<
  \new Staff = "RH"  \with {
    \override VerticalAxisGroup #'staff-staff-spacing = #'((padding . 5))
  }
  { f2 f8 \change Staff = LH  f,16[ c f \change Staff = RH a c' f'] }
  \new Staff = "LH"
  { \clef "bass" s1 }
>>


Cheers,
  Harm

phil-bug-2-14-2.png
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phil-bug-2-16-2.png
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phil-bug-2-17-19.png
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