Hello everybody, I'm sending it to -user, to discuss it before making a bug report.
As I said in the title, there's an annoying thing when typesetting an orchestral score with some Piano or Harp parts in it: when your harp (or piano) only plays a few notes with one single hand, the RemoveEmptyStaffContext makes the other staff (for the other hand) disappear. You're left with a single staff, and it's hard to remember this single staff is actually a Piano or Harp part (both are usually written on *two* staves at least). The existing solutions are: -remove the Hara_kiri_engraver from the staves of the PianoStaff context. This way (which I've been using until now), the two staves are *always* displayed, no matter whether they've notes or not. -whenever only one hand is playing, systematically add invisible notes to the other hand so the staff doesn't disappear. As Neil mentioned, it is ugly. -use the trick described in http://lsr.dsi.unimi.it/LSR/Item?u=1&id=312 , i.e. add the multi-measure-rest-interface to the list of keepAliveInterfaces whenever needed, then unset it. It is the most elegant solution, but then again, it has to be done *manually* whenever you need it. But this is, IMO, a bug: neither a Piano nor a Harp part should ever be reduced to a single staff! Here is the minimal example for a bug report. In this example, the piano staves should only be hidden in the third system. %%%% % (based on Neil's snippet) one = { \repeat unfold 4 { a4 b c' d'} \break \repeat unfold 4 { a4 b c' d'} \break \repeat unfold 4 { a4 b c' d'} \break a1 } two = { \clef bass \repeat unfold 4 { a4 b c' d'} \break \repeat unfold 4 { a4 b c' d'} \break R1*4 \break a1 } three = { \clef bass \repeat unfold 4 { a4 b c' d'} \break R1*4 \break R1*4 \break a1 } \score {<< \context Staff = one \one \new PianoStaff << \context Staff = two \two \context Staff = three \three >> >> \layout { \context { \RemoveEmptyStaffContext } } } %%%% Regards, Valentin _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user
