display tuplet ratio in \rhythm markup

[damianlegassick]

Hi all

in the following, is there any way to have the metric modulation markup via \rhythm show the ratio '5:7' instead of just '5'? I've tried \override TupletNumber.text = #tuplet-number::calc-fraction-text in various places but no joy.

thanks, D

\version "2.25.2"

{

  \time 7/8

  \tuplet 5/7 {c'8 8 8 8 8}

  \time 2/8

  c'16 16 16 16

  \tempo \markup { \rhythm {\tuplet 5/7 {8}} = \rhythm {8}}

  \time 2/4

  c'8 8 8 8

}