some related bugs with cross-staff beams and clef changes

[Wilbert Berendsen]

Hi all,

this file: http://www.xs4all.nl/~wbsoft/prelude.pdf (my try to typeset music 
by Pierné which enters the public domain next year) shows some related bugs 
in todays git. Source: http://www.xs4all.nl/~wbsoft/prelude.ly .

There is one voice with music constantly switching staves, with kneed 
cross-staff beams and some clef changes.

These are the 'defects' in lilypond's typesetting:

- the small clefs take up unnecessary space when there are notes in that 
measure before the clef change. E.g. measure 1 and 2. When the clef change is 
the first thing to happen inside a measure the display is ok, e.g. measure 9 
and 16 (the first clef, the second one takes too much space).

- measure 19 shows a bigger bug: the notes are drawn over the key signature. 
When I lower the music one octave, the problem goes away. So this must be 
some side-spacing related bug, occuring with kneed cross-staff beams. I was 
not able to reproduce this bug in a smaller file, that's why I post the full 
file.

Another bug which is possibly related is: 
http://lists.gnu.org/archive/html/bug-lilypond/2007-07/msg00087.html

(should i post this to bug-lilypond?)

thanks, 
Wilbert

-- 
http://www.wilbertberendsen.nl/
"You must be the change you wish to see in the world."
        -- Mahatma Gandi