Here's the situation:
\version "2.18.2"
\relative c' {
\omit TupletBracket
\omit TupletNumber
\tuplet 3/2 4 { r8 << { fis g } \\ { <c, f!> <c f> } >> }
}
%% My idea to get a readable score: =>
\relative c' {
\omit TupletBracket
\omit TupletNumber
\tuplet 3/2 4 {
r8
<<
{
fis
%% ugh, ugly hack:
\tweak X-offset #2.1
\tweak extra-offset #'(-2.1 . 0)
g
}
\\
{
\once\override NoteColumn.force-hshift = #2.1
<c, f>
%% => j'imposerai le bécarre ici afin d'éviter
%% l'espacement indésirable du silence :
%% (natural sign placed here to avoid the rest misplacement)
\once\override Accidental.extra-offset = #'(-2.8 . 0)
<c f!>
}
>>
}
}
Now I'm sure to have read something about this situation but I cannot find it...