Re: Devnull: how to make it take no space

[Jean-Charles Malahieude]

Le 18/06/2011 15:57, Kieren MacMillan disait :
> Hi Jean-Charles,
>
> > In the book I'm engraving, it happens that some instruments get "tacet"
> > for certain pieces. In order to generate a full table of contents, I
> > treat them through "Devnull". The problem is that I often get what follows.
> > In this tiny example, I would like the "devnull" to not take any
> > vertical space. I've played with the various variables, but with no success.
> >
> > ---8<---
> > \version "2.14.0"
> > \score {
> >   \repeat unfold 4 { c'1 \break }
> >   \header { piece = "Piece one" }
> > }
> > \score {
> >   \new Devnull { s4 }
> >   \header { piece = "Piece two" opus = "TACET." }
> > }
> > \score {
> >   \repeat unfold 9 { e'1 \break }
> >   \header { piece = "Piece three" }
> > }
> > --->8---
>
> Is there any reason you don't simply use top-level markup instead?

The reason is that if I happen to "customize" the layout of those header 
variables, I would prefer it to apply in this particular case as well. 
And I find it useful when extracting instrumental parts of the opera I'm 
engraving (King Arthur).

By the way, I discovered that Devnull, despite it is told to not 
generate any printable matter, takes some space, as I reported on bugs
http://lists.gnu.org/archive/html/bug-lilypond/2011-06/msg00193.html

Cheers,
Jean-Charles