Linebreaks in fragments & Lily-book

[Bostjan Kuzman]

In 2.1.28, if I input a music fragment with
 
\begin[raggedright]{lilypond}
\score{\notes{ ... } 
\end[lilypond]
 
the longer fragments are printed out of page and won't split in several
lines automaticaly anymore as they did in 2.0.0.
 
What should I do?
 
I know I can specify "linewidth=150" as an option, but there is probably
a better solution.
 
Thanks. 
 
Bostjan