Re: problem with line breaking with polyrhythm

[Libero Mureddu]

I've also tried the following solution, with tuplets instead of
compressMusic, but \break doesn't work.
Libero

\score {
                        <<
        \set Score.proportionalNotationDuration = #(ly:make-moment 1 16)
        \new Staff {    % first staff
                                \time 3/4
                                c c c
                                c c c  \bar "|" \break
                                c c c
                                } % end staff

        \new Staff {    % second staff
                                \time 9/4
                                \times 3/4 {c c c \bar "|" c } %\bar "|"
                                \times 3/4 {c c \bar "|" c c } %\bar "|"
                                \times 3/4 {c \bar "|" c c c } %\bar "|"
                                } % end staff

        \new Staff {    % third staff
                                \time 6/4
                                \times 2/3 {c c c \bar "|"} %\bar "|"
                                \times 2/3 {c c c \bar "|"} %\bar "|"
                                \times 2/3 {c c c \bar "|"}
                                } % end staff

                        >> %end of expression together
        } %end of \score

\layout {
        \context {
                        \Score
                                \remove "Timing_translator"
                                \remove "Default_bar_line_engraver"
                        } % end of context Score
        
        \context {
                        \Staff
                        \consists "Timing_translator"
                        \consists "Default_bar_line_engraver"
                        } % end of context Staff

        \context {
                        \Voice
                        \remove "Forbid_line_break_engraver"
                        } % end of context Voice
        } % end of layout