Re: alternate note of trill and its accidental

[Paul Scott]

Jacob Smullyan wrote:

> Hi --
>
> I'd like to be able to specify the chromatic alteration of a trill's
> alternate note, by placing the accidental over the trill sign.  (In
> fact, I'd really prefer to extend with trill with a wavy line and
> extend that over multiple notes, changing the alternate pitch over
> different noteheads but using only one trill sign -- but for my first
> day of lilypond typesetting I'd be quite happy to accomplish the
> former, lesser goal!) 
>
> I have not yet been able to find an example of this anywhere.  Does
> anyone know the/a right way to go about this, or have a pointer about
> roughly how to approach it?
This worked as suggested by Alexandre.Beneteau:

Just a cut and paste from a score I've typeset a few weeks ago (no 
guarantee !!!) :

trillNatural = \markup { \musicglyph #"scripts-trill" \raise #0.8 { 
\musicglyph #"accidentals-0" } }

trillFlat = \markup { \musicglyph #"scripts-trill" \raise #0.8 { 
\musicglyph #"accidentals--1" } }

Cheers,

   Alex.

HTH,

Paul Scott