Re: shortcut for creating new Staff "subclass" context?

[Dan Eble]

On 2009-09-08, at 15:25 , Kieren MacMillan wrote:

> It would be so much easier to be able to force "inheritance" of  
> everything, e.g.
>
>  \context {
>    \name "MyStaff"
>    \from "Staff"
>    instrumentName = #"MyStaff"
>    shortInstrumentName = #"My"
>  }
>
> Is there anything like this? (From what I've read and experienced,  
> \alias does *NOT* do this.)

I might have done something like that in the recent past.  Does the  
following help?  SoloVoice is a kind of Voice.  UpperVoice and  
LowerVoice are kinds of SoloVoice.

\context
{
  \Staff
  \override TimeSignature #'style = #'numbered

  \accepts "SoloVoice"

  \accepts "UpperVoice"
  \accepts "LowerVoice"
}

\context
{
  \Voice
  \name SoloVoice
  \alias Voice
%% @todo 2.12.2 is crashing with a bus error in ambitus engraving
%  \consists "Ambitus_engraver"
}

\context
{
  \SoloVoice
  \name UpperVoice
  \alias Voice

%% @todo 2.12.2 is crashing with a bus error in ambitus engraving
%  \consists "Ambitus_engraver"
}

\context
{
  \SoloVoice
  \name LowerVoice
  \alias Voice

%% @todo 2.12.2 is crashing with a bus error in ambitus engraving
%  \consists "Ambitus_engraver"
  \override Ambitus #'X-offset = #3.0
}

Regards,
--
Dan