Re: Ambitus not in the beginning

[Colin Campbell]

On 11/28/2013 02:07 PM, pls wrote:
> On 25.11.2013, at 14:34, Kai Lautenschläger <address@hidden> wrote:
> > As you can see in the following not so tiny example inserting the ambitus makes 
> > the \RemoveEmptyStaves command ineffective.
> I reduced your example quite a bit and the problem is still there: 
> \RemoveEmptyStaves does not show any effect in staves containing voices in 
> which the ambitus engraver is added. AFAICS you are right and this is a bug.



I've modified it a bit further, putting the \consists in a \layout 
context. The effect is the same, in that an ambitus prevents a Staff 
from beiong considered empty, and this would be Bug 1.
The other effect I've noticed, which certainly seems to be Bug 2, is 
that declaring a \new Voice, when Ambitus_engraver is consisted in a 
Voice context, causes the ambitus  to be engraved at that point in 
musical time, wherever it occurs, and not at the start  of the staff.
 If it occurs at a \break, the ambitus gets engraved *both* at the end 
of the previous staff, i.e. before the break, and also at the start of 
the new staff. This may be Bug 3, or not: I'm not familiar enough with 
ambitus to be sure. We basses just have to know I, IV and V anyway.


\version "2.17.95"

\score {

<<

\new Staff {

R1

\break

\new Voice

\relative { a'4 b c d }

}

\new Staff {

c'1

\break

% \new Voice

\relative { a'4 b c d }

}

>>

\layout {

\context {

\Staff

\RemoveEmptyStaves

\override VerticalAxisGroup #'remove-first = ##t

\consists "Ambitus_engraver" % ambitus behaves, but empty staff remains

}

\context {

\Voice

% \consists "Ambitus_engraver" %ambitus and empty staff misbehave

}

}

}



Cheers,
Colin

--
I've learned that you shouldn't go through life with a catcher's mitt on both 
hands.
You need to be able to throw something back.
-Maya Angelou, poet (1928- )