Nested \repeat volta, \repeat segno, \jump ?

[Thomas Morley]

Hi,

please consider this small code:
{
  \repeat volta 2 {
    b4 b b b
    \mark \default
    c' c' c' c'
    \mark \default
    \alternative { d'1 e'1 }
  }
  f'4 f' f' f'
  \mark \default
  g'1
}
If \unfoldRepeats is applied (for midi) it should be:
{
  b4 b b b
  c' c' c' c'
  d'1
  b4 b b b
  c' c' c' c'
  e'1
  f'4 f' f' f'
  c' c' c' c'
  g'1
}

How to do with \repeat volta ..., \repeat segno ..., \jump ... or else?

Thanks,
  Harm