Re: show key signature but also alterations

[Frédéric]

> > \key d\major
> > \set Staff.keyAlterations = #'()
> > \accidentalStyle dodecaphonic
>
> Obviously not \accidentalStyle dodecaphonic though.
> \accidentalStyle forget I think?

apparently, this doesn't work:
\version "2.19.0"
\language "english"
{
  \key d \major
  \set Staff.keyAlterations = #'()
  \accidentalStyle forget
  d' e' fs' g' a' b' cs'' d''
}

The effect of \set Staff.keyAlterations = #'() seems to be the same as
\key c \major, it removes the key signature.
I would like to write my own accidental style in scheme but I'm a bit
lost about where to start.

F