Re: Issue 3457: Add snippet `Using \partcombine with lyrics'. (issue 11328043)

[dak]

On 2013/07/19 06:10:17, Mark Polesky wrote:
> On 2013/07/18 20:47:05, dak wrote:
> > Folks, this is the reference manual, not "obscure hacks
> > for adventureous geeks".  If we anticipate that a task is
> > common enough to warrant an entry in the reference manual,
> > it warrants a user interface.

> Fair enough.

> > We might or might not want to cobble this user interface
> > together using a technique like that, but if we are really
> > proud of it, we can still point out that the
> > implementation, to be found in xxx.ly, might be
> > instructive.
> >
> > So what would be a nice and natural user interface, and
> > what pieces are missing from it?

> <<
>    \new Staff \with { printPartCombineTexts = ##f } <<
>      \new HiddenVoice = "voiceForLyrics" \sopranoNotes
>      \new Voice {
>        \key g \major
>        \partcombine \sopranoNotes \altoNotes
>      }
>    >>
>    \new Lyrics \lyricsto "voiceForLyrics" \words
> >>

> "HiddenVoice" could also be "LyricsVoice" I suppose, but
> "HiddenVoice" seems more sematically flexible.

> This interface could possibly also solve another problem
> that I have from time to time: in chorales, when the voices
> use the same lyrics but have slightly different rhythms,
> sometimes it's preferable to print a lyric syllable *in
> between* where it would fall in the different voices.  A
> hidden voice (that the lyrics could align with) could solve
> that (as long as it doesn't alter the spacing of the printed
> voices, that is).

> As for its usefulness, for me it would be an enormous
> time-saver.  A lot of my LilyPond work is typesetting 4-part
> choir pieces, and without this feature I often end up
> entering two voices as one like this:

> upperNotes = \relative d' {
>    <d g>4 << { fis8( g) } \\ d4 } >> <d a'>4 <d g> |
>    <d c'>4 <d c'> <d b'>2
> }

> ... just so the Lyrics context has something to align to.

Ok.  Is the _output_ from the following what you'd consider appropriate?

sopranoNotes = { c''2 d''4 e'' }
altoNotes = { \repeat unfold 8 { a'16 g'16 } }
words = \lyricmode { Oh my head }

<<
  \new Staff \with { printPartCombineTexts = ##f \accepts "Devnull" } <<
    \new Voice {
      \key g \major
      \partcombine \sopranoNotes \altoNotes
    }
    \new Devnull = "aligner" { \sopranoNotes }
  >>
  \new Lyrics \lyricsto "aligner" \words


Basically, the question is whether we can do something like NullVoice
and get along without any engravers/properties in it.

https://codereview.appspot.com/11328043/