\override ClefModifier.text has no effect

[Malte Meyn]

Hi list,

I’m not sure: Is this a bug? According to the Internals Reference, 
ClefModifier has ly:text-interface::print as a stencil and should use 
the 'text property. But the following doesn’t show “8va” as expected but 
“8”:

\version "2.21.0" % same for 2.19.82, 2.18.2
{
  % make sure the correct grob is targeted
  \override Staff.ClefModifier.color = #red
  % nothing happens:
  \override Staff.ClefModifier.text = "8va"
  \clef "treble^8"
  R1
}

I suppose that there’s a reason for that behaviour (maybe in the 
definition of the \clef command?) but could be considered a bug 
nevertheless. I found the following workaround but it’s not very 
comfortable:

{
  \override Staff.ClefModifier.before-line-breaking =
  #(lambda (grob)
     (ly:grob-set-property! grob 'text "8va"))
  \clef "treble^8"
  R1
}

Cheers,
Malte