Re: restating clef and StaffGroup brace after \startStaff

[Jean Abou Samra]

Le 21/10/2020 à 18:21, Gilberto Agostinho a écrit :
> Hello,
>
> Does anyone know if it would be possible to restate a staff's clef and 
> a StaffGroup's brace after the \startStaff command? I am again trying 
> to create a diagram showing non-consecutive measures side by side. I 
> am able to set the bar numbers of these measures to arbitrary values 
> as I wish, but I think the second measure would look better with clefs 
> and braces similarly to the first. Does anyone have any ideas how to 
> tackle this?
>
> \version "2.19.82"
> A = {
>     \once \override Score.BarNumber.break-visibility = 
> #end-of-line-invisible
>     \set Score.currentBarNumber = #2
>     \bar ""
>     c'2 d'2
>
>     \stopStaff
>     s1
>     \startStaff
>
>     \once \override Score.BarNumber.break-visibility = 
> #end-of-line-invisible
>     \set Score.currentBarNumber = #13
>     e'2 f'2
> }
> B = {
>     c'1
>     \stopStaff
>     s1
>     \startStaff
>     c'1
> }
>
> \score{
>     \new StaffGroup <<
>         \new Staff \A
>         \new Staff \B
>     >>
>     \layout{}
> }
>
> Producing: 
> https://i.postimg.cc/ydXVn8HM/Screenshot-from-2020-10-21-17-19-13.png
>
> Many thanks!
> Gilberto
Hello,

Maybe there are hacks. However, for achieving this kind of tasks,
I would rather create separate systems and stack them in markups.
For instance (adapt the code to your convenience):

\version "2.23.0"

\layout {
  \context {
    \Score
    \override Score.BarNumber.break-visibility = #end-of-line-invisible
  }
}

#(define-markup-command (make-snippet layout props bar-number upper lower)
                             (integer? ly:music? ly:music?)
   (interpret-markup layout props
   #{
     \markup
       \score {
         \new StaffGroup <<
           \new Staff {
             \set Score.currentBarNumber = #bar-number
             \bar ""
             #upper
           }
           \new Staff { #lower }
         >>
         \layout { }
       }
   #}))

\markup {
  \make-snippet #2
    {
      c'2 d'2
    }
    {
      c'1
    }
  \hspace #5
  \make-snippet #13
    {
        e'2 f'2
    }
    {
      c'1
    }
}

Best regards,
Jean

PS: Note that LilyPond 2.20 is available 
(http://lilypond.org/download.html).