Re: slur moves on its own (in specific situations)

[Dmytro O. Redchuk]

On Wed 08 Jun 2011, 23:30 Mark Polesky wrote:
> Hey guys,
> 
> I found another head-scratcher bug...  This is the sort of thing
> you can only find by accident.  The first measure contains two
> identical halves; the slur in the first half is printed properly,
> but the slur in the second half is printed too high above the
> beam.
I've added this as 1703:
http://code.google.com/p/lilypond/issues/detail?id=1703

Thank you.

> I honestly tried to make this example file as tiny as possible,
> but the combination of elements needed to trigger the bug seems
> curiously specific.  For example, if I remove any one of these
> elements, the problem disappears:
> 
> #(set-default-paper-size "letter")
> #(set-global-staff-size 17)
> left-margin = 0.75\in  --and--  right-margin = 0.75\in
> \key bf \major
> \break
> 
> Stranger still, if I change staff-size to 15, 16, 18, 19, or 20,
> the problem goes away, and if I change both margins to 0.5\in or
> 1\in, the problem also goes away.
> 
> So, what's going on?  This is bizarre...
> 
> Thanks.
> - Mark
> 
> 
> * * * * * * * * * * * * * * * *
> 
> 
> \version "2.14.0"
> 
> #(set-default-paper-size "letter")
> #(set-global-staff-size 17)
> 
> \paper {
>   left-margin = 0.75\in
>   right-margin = 0.75\in
> }
> 
> \relative bes' {
>   \key bes \major
>   <<
>     { bes='4 f8 f16( f-.) bes4 f8 f16( f-.) | }
>     \\
>     { d='8 d4 d16 r d8 d4 d16 r | }
>     \\
>     { d='8 d16 f s4 d8 d16 f s4 | }
>   >>
>   \break
>   bes4 r2. |
> }
> 
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-- 
  Dmytro O. Redchuk
  Bug Squad