control-points dont seem to work for tupletbracket

[Ricardo Teruel]

I think it's quite common to have curved tuplet brackets 
specifically for triplets. 
In any case I would really appreciate the option.
Lilypond is such a beatiful program.
Other tuplets usually use straight brackets.

I tried to curve the bracket with #'control-points 
but only the first and second nodes would define the bracket. 
The tird and fourth would do nothing.

I tried the same with a Slur and it worked perfectly with the slur.


snippet:

\version "2.11.61"

\score {

  \new Staff = "Prueba" {
    \relative c' { % abre \relative de prueba

 \override TupletBracket #'bracket-visibility = ##t
  \override Staff.TupletBracket #'control-points = #'( ( 0 . -10 ) (20 . 14)(30
. -25) (40  . -36 ) (50 . 52) )
 \override Slur  #'control-points = #'( ( 0 . -10 ) (20 . 14)(30 . -25) (40  .
-36 ) (50 . 52) )
        \times 2/3{ c'8 (d e} f4 f f |
        c d e f)

} % fin \relative
} % fin de \new Staff prueba



\layout { }

}



Thanks,

Ricardo