Thanks Valentin, that's quite helpful.  I ended up taking an approach you
suggested in a previous
post<http://lists.gnu.org/archive/html/lilypond-user/2010-10/msg00687.html>to
this list.  Using the NoteNames context with alternative note names
seems
to be doing pretty much everything I want.

Here's a revised version of my script that works as desired:

% Moveable Do as lyrics example

% define solfege pitchnames
pitchnames = #`(
(do . ,(ly:make-pitch -1 0 NATURAL))
(re . ,(ly:make-pitch -1 1 NATURAL))
(mi . ,(ly:make-pitch -1 2 NATURAL))
    )

#(ly:parser-set-note-names parser pitchnames)

% Apparently, LilyPond reverts to dutch names when
% using the NoteNames context. The following
% workaround was posted by V. Villenave at
% http://lists.gnu.org/archive/html/lilypond-user/2010-10/msg00687.html

newnames =
#`(("c" . "do")
   ("d" . "re")
   ("e" . "mi"))

myNoteNames =
#(lambda (grob)
   (let* ((default-name (ly:grob-property grob 'text))
          (new-name (assoc-get default-name newnames)))
         (ly:grob-set-property! grob 'text new-name)
   (ly:text-interface::print grob)))

% compose as though in C major
mynotes =  \relative do' {\key do \major do2 re4( mi4) }

% transpose to desired key
melody = \transpose do mi  { \mynotes }

% Produce score with solfege names as lyrics
\score {
    <<
    \new Voice = "myVoice" {
\melody
    }
    \context NoteNames \with {
       \override NoteName #'stencil = #myNoteNames
    } { \mynotes }

    >>
    }
\version "2.12.3"


This approach seems to work ok with a larger example where I defined all the
chromatic solfege names.  The only issue I seem to be encountering in the
larger example is an unintended doubling of voices on the midi output. Does
the NoteNames engraver produce a midi stream by default?  If so, how can I
turn it off?

My midi section looks like

\midi {
        %% voodoo that lets us specify instrument in melody
     \context {
       \Staff
       \remove "Staff_performer"
     }
     \context {
       \Voice
       \consists "Staff_performer"
        }
    }


Cheers,
Mike


On Tue, Dec 7, 2010 at 11:41 AM, Valentin Villenave
<valen...@villenave.net>wrote:

> On Tue, Dec 7, 2010 at 4:35 PM, Michael Ellis <michael.f.el...@gmail.com>
> wrote:
> > It seems to me that the best solution would be to use LilyPond's built-in
> > Scheme interpreter to extract the pitch names while the file is being
> > processed. I've made some attempts to use map with ly:note-pitchname, but
> so
> > far no success. This is probably because I know squat about Scheme,
> > especially as used in LilyPond scripts.
>
> Here's an attempt of a patch I recently made, that might give you some
> pointers:
>
> diff --git a/scm/chord-name.scm b/scm/chord-name.scm
> index 7f5909b..2853102 100644
> --- a/scm/chord-name.scm
> +++ b/scm/chord-name.scm
> @@ -59,15 +59,38 @@
>       (make-hspace-markup (if (= alteration SHARP) 0.2 0.1))
>       ))))
>
> +(define (note-names-vector alist)
> +  "Extract note names from a pitchnames ALIST."
> +  (let ((name-ls '()))
> +    (map (lambda (x)
> +          (let* ((pitch (cdr x))
> +                 (alteration (ly:pitch-alteration pitch)))
> +            (if (eq? alteration 0)
> +                (set! name-ls (cons
> +                               (string-capitalize (symbol->string (car
> x)))
> +                               name-ls)))))
> +         alist)
> +    (list->vector (reverse name-ls))))
> +
> -(define-public (note-name->markup pitch lowercase?)
> +(define-public (note-name->markup pitch lowercase? . input-language)
>  "Return pitch markup for PITCH."
> -  (make-line-markup
> -   (list
> -    (make-simple-markup
> -     (conditional-string-downcase
> -      (vector-ref #("C" "D" "E" "F" "G" "A" "B") (ly:pitch-notename
> pitch))
> -      lowercase?))
> -    (accidental->markup (ly:pitch-alteration pitch)))))
> +  (let* ((get-pitchnames (lambda (x)
> +                          (ly:assoc-get (string->symbol x)
> +                                        language-pitch-names)))
> +        (alist (get-pitchnames default-language)))
> +    (if input-language
> +       (cond ((string? input-language)
> +              (set! alist (get-pitchnames input-language)))
> +             ((boolean? input-language))
> +             (set! alist pitchnames)))
> +    (make-line-markup
> +     (list
> +      (make-simple-markup
> +       (conditional-string-downcase
> +       (vector-ref (note-names-vector alist)
> +                   (ly:pitch-notename pitch))
> +       lowercase?))
> +      (accidental->markup (ly:pitch-alteration pitch))))))
>
> Sorry for not being more helpful, if there are things you don't
> understand I'll try and help you further.
>
> Cheers,
> Valentin.
>
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