break-align-symbol setup for left-aligning a RehearsalMark with the first note

[Kieren MacMillan]

Hello all,

Is there a break-align-symbols list such that a RehearsalMark left-aligns with 
the first note in the measure, rather than the barline?

%%%  M[N]WE:
{
  \tweak RehearsalMark.self-alignment-X #LEFT
  \tweak RehearsalMark.break-align-symbols #'()
  \mark \default
  c''1
}

Thanks,
Kieren.
________________________________

Kieren MacMillan, composer
‣ website: www.kierenmacmillan.info
‣ email: address@hidden