Re:StaffGroup bar line problem in polymetric notation

[Libero Mureddu]

Hi Carl,
even if I didn't try your example, I understand why it will work!
Thanks a lot for your help.
I have another question, though: should I make an example to add to
the LSR? Because both the groupstaff and pianostaff issues are somehow
part of a more real-life example of a polymetric score.
Regards,
Libero

> From: Carl Sorensen <address@hidden>
> Subject: Re: StaffGroup bar line problem in polymetric notation
> To: address@hidden
> Message-ID: <address@hidden>
> Content-Type: text/plain; charset=us-ascii
>
> Libero Mureddu <libero.mureddu <at> gmail.com> writes:
>
>>
>> Hi Carl and list,
>> I just realized that for some (to me) strange reason, with your
>> solution (using \override StaffGroup.SpanBar #'stencil = ##f instead
>> of \remove "Span_bar_engraver"), the grand piano staff doesn't have
>> anymore the barline across its two staves.
>> Do you have any idea about this behavior and how to get back the
>> pianostaff barline?
>> Thanks,
>>
>> Libero
>>
>
> You need to create the PianoStaff as an InnerStaffGroup, so it can have its
> own StaffBar stencil.
>
> %% Start of code: Polymetric notation with Group bars on and off.
>
> \version "2.11.48"
>
> \layout {
>       \context {
>         \Score
>         \remove "Timing_translator"
>         \remove "Default_bar_line_engraver"
>       }
>       \context {
>               \StaffGroup
>               % \remove "Span_bar_engraver"
>       }
>               \context {
>         \Staff
>         \consists "Timing_translator"
>         \consists "Default_bar_line_engraver"
>       }
>     }
>
>     % Now each staff has its own time signature.
>
>     \relative c' <<
>     \new StaffGroup <<
>      \override StaffGroup.SpanBar #'stencil = ##f
>     \new Staff
>      { \time 3/4
>         d c c |
>         c c c |
>         d c c |
>         c c c |
>         c8
>       }
>       \new Staff {
>         \time 2/4
>         c4 c |
>         c c |
>         c c |
>         \revert  StaffGroup.SpanBar #'stencil
>         c4 c |
>         \override StaffGroup.SpanBar #'stencil = ##f
>         c c |
>         c c |
>          \revert  StaffGroup.SpanBar #'stencil
>         c8
>         %\override StaffGroup.SpanBar #'stencil = ##f
>       }
>       \new Staff {
>         \time 3/8
>         c4. |
>         c8 c c |
>         c4. |
>         c8 c c |
>         c4. |
>         c8 c c |
>         c4. |
>         c8 c c |
>         c8
>       }
>       \new InnerStaffGroup <<
>         \override InnerStaffGroup.SpanBar #'stencil = #ly:span-bar::print
>         \set InnerStaffGroup.systemStartDelimiter = #'SystemStartBrace
>            \new Staff { \time 6/8
>            c2. |
>            c |
>            c2. |
>            c |
>            c8}
>            \new Staff { \time 6/8
>            c2. |
>            c2. |
>             c2. |
>            c2. |
>            c8}
>          >>
>
>       >>
>     >>
>
> %% End of code
>
> Carl