Hi,
if https://gitlab.com/lilypond/lilypond/-/merge_requests/1052 gets
merged, it will be possible to do:
\version "2.23.6"
{
\once \override Timing.TimeSignature.stencil =
#(lambda (grob)
(grob-interpret-markup grob
#{
\markup
\override #'(baseline-skip . 1)
\override #`(dots-direction . ,UP)
\center-column
{
\number 3
\with-dimensions-from \note { 4 } #DOWN
\note { 4. } #DOWN
}
#}))
\time 9/8
\repeat unfold 9 c'8
}
The commit has now been merged; hence, the code will (probably) work as
promised when 2.23.6 is released.
Lukas