Re: using oneVoice vs force-hshift in polyphany and alternatives

[Mats Bengtsson]

Quoting Stephen <address@hidden>:

> Sure, the notes are in the right place. The interaction between the 
> various parts is baffling though. Using \oneVoice to set the notes 
> over one another seems to make the stems go up; \stemDown erases the 
> effect of \oneVoice and \oneVoice cancels \stemDown. Apparently 
> \override NoteColumn #'force-hshift = #0.0 accomplishes the what I 
> want without side effects.
>
> What is \oneVoice meant to be used for? Can someone list separately 
> all the things it does?

See Sect. "Explicitly instantiating voices" for a list of what 
\voiceOne, ..., \voiceFour do. \oneVoice reverts the settings
done by any of \voiceOne ... \voiceFour, so among others it does
a \revert Stem #'direction
which is what you noted.

  /Mats

> Finally, I don't understand the scoping rules at play here. How come 
> I can comment out some of the stem overrides while leaving them in 
> effect?
>
> Stephen