Re: AccidentalCautionary in NullVoice

[Dan Eble]

On Aug 18, 2014, at 04:51 , David Kastrup <address@hidden> wrote:

> "Keith OHara" <address@hidden> writes:
> 
>> Not if there are uses of NullVoice as a completely invisible voice.
>> If NullVoice does not show its own accidentals, alterations on
>> NullVoice notes should not count for figuring which further notes need
>> visible accidentals.
> 
> So NullVoice needs its own local accidental style?

With the accidental styles for vocal music, the accidentals engraved for one 
voice depend on what has happened in other voices, so it would seem a little 
dissonant to define the style within the voice context.

Should all kinds of Voice have a property telling the Accidental engraver 
whether or not to pay attention to them?  If NullVoice is meant to be an 
invisible voice, then this property would be set to false for it.  In my case, 
where I don’t want to fix just the lyrics, but also dynamics and accidentals, I 
would set this property to false in the part combiner’s voices and true in a 
WorkaroundVoice (or whatever).

Or is there another way to filter out information from X context before it is 
given to Y engraver?  I expect that would reduce the amount of conditional code 
in the engraver (though my knowledge of Lilypond internals is superficial).
— 
Dan