Tuplet on single-note tremolo

[Reinhold Kainhofer]

Hi, 
Schubert's Stabat Mater (D.383) contains lots of measures (3/4 time), where 
each beat is a eigth-tremolo using an additional triplet, ie. in lilypond 
notation:
  \times 2/3 { a4.:8 } \times 4/6 {a2.:8} | ....

If I use this in lilypond, it gets the timing correct, but unfortunately the 
tuplet (which appears only on a single printed note) does NOT display any 
tuplet number... How can I make the tuplet number appear (at least for the 
4/6 tuplet that's absolutely required!) ?

Attached is a "full" example of the problem and one correct note as it appears 
in two printed editions (one from 1897 and the other from 1996).

Thanks,
Reinhold

-- 
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Reinhold Kainhofer, Vienna University of Technology, Austria
email: address@hidden, http://reinhold.kainhofer.com/
 * Financial and Actuarial Mathematics, TU Wien, http://www.fam.tuwien.ac.at/
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