Re: Single line percussion staff with automatic note splitting

[Thomas Morley]

Hi,

2011/12/11 James <address@hidden>:
> Hello,
>
> On 11 December 2011 09:00, Bart Nagel <address@hidden> wrote:
>>
>> Hi. I'm trying to make a single line percussion staff with automatic
>> note splitting.
>>
>> The single staff is confusing but I got it working by following an
>> example in the documentation. I have this:
>>
>>    \version "2.12.3"
>>
>>    #(define snaredrum '((snare default #t 0)))
>>
>>    \new DrumStaff {
>>        \override Staff.StaffSymbol #'line-positions = #'( 0 )
>>        \override Staff.BarLine #'bar-size = #2
>>        \set DrumStaff.drumStyleTable = #(alist->hash-table snaredrum)
>>
>>        \drummode {
>>            \time 4/4
>>            sn2.  sn16  sn2.  sn2.  sn4  sn16
>>        }
>>    }
>>
>> (The notes are just random values.)
>>
>> That works, but when I try to add the code to enable automatic note
>> splitting things go wrong. Following the documentation again I modify
>> my source to this:
>>
>>    \version "2.12.3"
>>
>>    #(define snaredrum '((snare default #t 0)))
>>
>>    \new DrumStaff \with {
>>        \remove "Note_heads_engraver"
>>        \consists "Completion_heads_engraver"
>>    } {
>>        \override Staff.StaffSymbol #'line-positions = #'( 0 )
>>        \override Staff.BarLine #'bar-size = #2
>>        \set DrumStaff.drumStyleTable = #(alist->hash-table snaredrum)
>>
>>        \drummode {
>>            \time 4/4
>>            sn2.  sn16  sn2.  sn2.  sn4  sn16
>>        }
>>    }
>>
>> But now Lilypond exits with a segmentation fault.
>
>
> In 2.14.1 it does but the message is more explicit (I don't know what 2.12.x
> message is perhaps the same?)
>
> --snip--
>
> GNU LilyPond 2.14.1
> Processing `untitled.ly'
> Parsing...
> Interpreting music...
> warning: cannot find property type-check for `bar-size' (backend-type?).
>  perhaps a typing error?
> warning: doing assignment anyway
> Segmentation fault
>
> --snip--
>
> So that is a clue. Although it is beyond me.
>
> regards
>
> --
> --
>
> James

engraver-init.ly states, that the "Note_heads_engraver" is removed
from the DrumVoice per default. Instead the "Drum_notes_engraver" is
used.
But

   \new DrumVoice
   \with {
       \remove "Drum_notes_engraver"
       \consists "Completion_heads_engraver"
   }
      {
       \override Staff.StaffSymbol #'line-positions = #'( 0 )
       \override Staff.BarLine #'bar-size = #2
       \set DrumStaff.drumStyleTable = #(alist->hash-table snaredrum)

       \drummode {
           \time 4/4
           sn2.  sn16  sn2.  sn2.  sn4  sn16
       }
   }

gives the same error. So I don't know if it's possible.

BTW in "2.14" t'bar-size was altered to 'bar-extent (expecting a pair).

Cheers,
  Harm