\forgetAccidentals and his friends, have no effect

[Alexandre B]

I'm using lily v2.1.0 as compiled for mdk: lilypond-2.1.0-2thac...rpm

I'm having a problem with \forgetAccidentals (or any of those 
\modernAccidentals, \pianoAccidentals, \piano and \modernCautionaries , etc..

They don't seem to affect anything.
Note that I tried with and without the:
        \property Score.timing = ##f
line. So, that omitted.. this score is really nothing weird!

I'm posting an excerpt of the file for reference. I'm new to this list.. so if 
sending large scores through it isn't something the users want.. please tell 
me in a reply :)

thanks!

Alexandre Bourget



the file:


mainDroite = \notes \relative c''' {
    \forgetAccidentals
    \clef treble
    \key c \major

    
                    % début
    r4 bes r e,, r
    #(set-octavation 1)
    b''' r r d
    #(set-octavation 0)
    b,,
                    % accords mg début.
    r a b c, f
    \bar "" \break
    \clef bass <e, g bes> \clef treble ees''' r
                    % ensemble deux derniers avant les accords qui montent
    f, aes,
    
                    % accords
    < bes, c des ees aes >
    < bes des ees ges bes >
    < bes ees ges aes c >
    < bes ees ges bes des >
    < c ges' aes bes des >
    < des ees' >     \bar "" \break   < des ees' >
    < ees bes' des f > < ees f' >
    < f bes des ges > < f ges' >
    < ges des' ees aes > < ges aes' >
            % ici avec la tête
            % on alterne avec la tête et un accord.
    < aes bes' >    r
    < aes bes' >    r
    < bes c' >      r
    < bes c' >      r
            % grande final
    des' <c,, des!>
    %< e, aes c >
            % puis on quitte.
}

mainGauche = \notes \relative c {
    \forgetAccidentals
    \clef bass
    \key c \major    

                    % début
    aes4 r d r c' r gis,, a' c' f,,
                    % accords mg début
    <g e' g> r <f e' f> <e e' f>
    <fis gis ais fis'> e r cis
                    % ensemble deux derniers avant les accords qui montent
    ees' c'
    
                    % accords
    <aes,, aes'> <aes aes'>
    <aes aes'> <aes aes'>
    <aes aes'> <aes aes'>
    <des, des'> <des des'>
    <des des'> <des des'>
    <des des'> <des des'>
    <ges ges'> r
                    % clusters, avec la tête là.
    \apply #notes-to-clusters { <c c'> }
    %cluster
    r
    \apply #notes-to-clusters { <c c'> }
    %cluster
    r
    \apply #notes-to-clusters { <c c'> }
    %cluster
    r
    \apply #notes-to-clusters { <c c'> }
    %cluster
    r2
                    % on quitte
}

\score {
    \context PianoStaff <<
        \property Score.timing = ##f
        \mainDroite \\
        \mainGauche
    >>
    \paper {    
        \translator {
            \ScoreContext SpacingSpanner \override #'shortest-duration-space = 
#2.0
        }

        papersize = "letter"
    }
}