Re: concatenate BarNumber and string (\")?

[Aaron Hill]

On 2021-09-25 7:30 am, padovani wrote:
> Hi,
>
> I'm working with an algorithmic transcription of some sounds. I'm using 
> a
> 1/4 TimeSignature with custom barlines and would like to concatenate a
> seconds quote (") to the BarNumber...
>
> Do you have any tips on how to do that?
>
> It seems that I should deal with BarNumber.stencil, but I'm not getting 
> how
> to concatenate the printed number to an arbitrary string.
>
> Any suggestions?

grob-transformer on BarNumber.text would be ideal, but that property 
does not support a callback.

You could do the transform yourself either within a stencil callback or 
using before-line-breaking:

%%%%
asdf = {
  \override Score.BarNumber.break-visibility = #all-visible
  \time 1/4 \repeat unfold 9 b'4
}

{
  \override Score.BarNumber.stencil =
  #(lambda (grob)
    (let ((text (ly:grob-property grob 'text)))
     (grob-interpret-markup grob
      #{ \markup \concat { #text "\"" } #})))
  \asdf
}

{
  \override Score.BarNumber.before-line-breaking =
  #(lambda (grob)
    (let ((text (ly:grob-property grob 'text)))
     (ly:grob-set-property! grob 'text
      #{ \markup \concat { #text "\"" } #})))
  \asdf
}
%%%%


-- Aaron Hill