pianostaff issues

[karim haddad]

Hello all

I am typesetting a piano score that i have done in an unammable  
program , now in lily because its far better. However i have some  
problems in rendering some stuff. These might not be bugs so sorry if  
it is not here that i must post this.

So , The old score is here :
http://karim.haddad.free.fr/pub/local/lily/42.pdf

the new one in progress here :

http://karim.haddad.free.fr/pub/local/lily/47f.pdf

the lily source file here :

http://karim.haddad.free.fr/pub/local/lily/47f.ly

Ok first issue :

1) I am not able to use mixed mode style for the Piano  
pedalSustainStyle below . Maybe i am missing an engraver ???

2) i don't know how to (or is it possible ?) to render a double beam  
chord like in measure five (bass voice c.f old score). This is  
indispensible if we have a cluster like chord with c cis d dis in the  
same register

3) how can i put a slash for a grouped gracenotes (accaciatura like)

4) how can i put brackets  around a chord  like in measure 14 in old  
score ?

Any suggestions ?

About the source i have started with the piano template from the  
documentation

I am using the 2.9.10-1 version on ppc macosx

By the way the musicxml2ly still doesn't work with chords,,,


Thank you
and best to u all
karim