Am Mi., 25. Jan. 2023 um 17:54 Uhr schrieb David Kastrup <d...@gnu.org>: > > Stu McKenzie <swws...@handsmck.com> writes: > > > There seems to have been various reports of bugs when the first note > > is a grace note, but this bug has been in many LilyPond versions to > > date. > > > > When the first note of a drum score has a grace note, LilyPond outputs > > the default note, rather than the custom percussion style. > > > > In this case, \acciaccatura is used to create each grace note - main > > note combination. > > > > Here's a "Tiny example": > > > > \version "2.24.0" > > #(define mydrums '( (hightom default #f 3))) > > \score { > > \new DrumStaff << > > \set DrumStaff.drumStyleTable = #(alist->hash-table mydrums) > > \new DrumVoice { \voiceTwo \drummode { \partial 2 \acciaccatura > > tomh8 tomh4 \acciaccatura tomh8 tomh4 } } > > >> > > } > > This is not a bug. You specify you _want_ simultaneous music by using > << ... >> and the settings of DrumStaff.drumStyleTable are performed > _on_ the beat while the grace notes are performed _before_ the beat. > > This is _exactly_ as you tell LilyPond you want things to happen. If > you want to have things to happen in sequence, you have to write them in > sequence. > > Using { ... } instead of << ... >> here probably gives something closer > to your expectations. > > Now for things that _pervade_ a context rather than switch around, it > makes sense not to set them at the first time step but generally, by > using a \with block: > > \version "2.24.0" > #(define mydrums '( (hightom default #f 3))) > \score { > \new DrumStaff \with { drumStyleTable = #(alist->hash-table mydrums) } > { > \new DrumVoice { \voiceTwo \drummode { \partial 2 \acciaccatura tomh8 > tomh4 \acciaccatura tomh8 tomh4 } } > } > } > > -- > David Kastrup >
It's unfortunate that we provide an example like: \new DrumStaff << \set DrumStaff.drumStyleTable = #(alist->hash-table mydrums) \new DrumVoice { \voiceOne \up } \new DrumVoice { \voiceTwo \down } >> as first code example in NR 2.5 Percussion Custom percussion staves. I've put up https://gitlab.com/lilypond/lilypond/-/merge_requests/1822 to fix the docs Cheers, Harm