Re: Empty lyrics lead to inaccurate 'cannot find Voice' warning

[Dmytro O. Redchuk]

On Tue 13 Sep 2011, 16:51 Sietse Brouwer wrote:
> Dear bug auditor,
> 
> This bug concerns Lilypond 2.12.3. It may affect later versions, I
> have been unable to test this.
> When I add an empty set of lyrics to a voice with \addlyrics, the
> compiler gives the following warning:
> bug.ly:14:16: warning: cannot find Voice `vSoprano'
> when in fact the problem is that the Lyrics expression is empty
> 
> Why I think this could be a problem: I was typesetting a song in
> parts, and I'd made some dummy variables for the verses I had yet to
> enter. This warning cost me half an hour as I tried to figure out what
> was wrong with how I defined the Voice's name.
This has been fixed:
http://code.google.com/p/lilypond/issues/detail?id=750

You can use the latest stable, I believe.

> Desired behaviour: a warning like "Warning: skipping empty lyrics"
> would be more appropriate, I think, especially as that is indeed what
> seems to happen. (See example below. Verse C appears right under verse
> A.)
> 
> Kind regards,
> 
> Sietse
> Sietse Brouwer
> 
> <begin tiny example>
> %Lilypond problem: inaccurate warning when lyrics are empty
> 
> verseOne = \lyricmode { This is verse A }
> verseTwo = \lyricmode { } % empty verse
> verseThree = \lyricmode { This is verse C }
> 
> \score {
>   \new ChoirStaff <<
>     \new Staff = "upper" <<
>         \new Voice = "vSoprano" { a b c' d' }
>     >>
>     \new Lyrics \lyricsto "vSoprano" { \verseOne }
>     \new Lyrics \lyricsto "vSoprano" { \verseTwo }
>     \new Lyrics \lyricsto "vSoprano" { \verseThree }
>   >>
> }
> <end tiny example>
> 
> <begin output transcript>
> GNU LilyPond 2.12.3
> Processing `bug.ly'
> Parsing...
> Interpreting music...
> bug.ly:15:16: warning: cannot find Voice `vSoprano'
> 
>     \new Lyrics
>                 \lyricsto "vSoprano" { \verseTwo }
> Preprocessing graphical objects...
> Finding the ideal number of pages...
> Fitting music on 1 page...
> Drawing systems...
> Layout output to `bug.ps'...
> Converting to `./bug.pdf'...
> <end output transcript>

-- 
  Dmytro O. Redchuk                        "Easy to use" is easy to say.
  Bug Squad                                             -- Jeff Garbers