[no subject]

[Stefan Thomas]

Dear Sandeep,
Yes, there is an solution, hope You can use it:
#(define  (naturalize-pitch p)
  (let* ((o (ly:pitch-octave p))
         (a (* 4 (ly:pitch-alteration p)))
    ; alteration, a, in quarter tone steps, for historical reasons
         (n (ly:pitch-notename p)))
    (cond
     ((and (> a 1) (or (eq? n 6) (eq? n 2)))
      (set! a (- a 2))
      (set! n (+ n 1)))
     ((and (< a -1) (or (eq? n 0) (eq? n 3)))
      (set! a (+ a 2))
      (set! n (- n 1))))
    (cond
     ((> a 2) (set! a (- a 4)) (set! n (+ n 1)))
     ((< a -2) (set! a (+ a 4)) (set! n (- n 1))))
    (if (< n 0) (begin (set! o (- o 1)) (set! n (+ n 7))))
    (if (> n 6) (begin (set! o (+ o 1)) (set! n (- n 7))))
    (ly:make-pitch o n (/ a 4))))

#(define (naturalize music)
  (let* ((es (ly:music-property music 'elements))
         (e (ly:music-property music 'element))
         (p (ly:music-property music 'pitch)))
    (if (pair? es)
        (ly:music-set-property!
         music 'elements
         (map (lambda (x) (naturalize x)) es)))
    (if (ly:music? e)
        (ly:music-set-property!
         music 'element
         (naturalize e)))
    (if (ly:pitch? p)
        (begin
          (set! p (naturalize-pitch p))
          (ly:music-set-property! music 'pitch p)))
    music))

naturalizeMusic =
#(define-music-function (parser location m)
                    (ly:music?)
            (naturalize m))
#(define vereinfachs naturalizeMusic)  
%Enharmonische Verwechslung
%Nur Kreuze zeigen
kreuze = #(define-music-function (parser location x) (ly:music?)
     #{
          \transpose  ges fis  $x 
     #})
%nur Bes zeigen
bees = #(define-music-function (parser location x) (ly:music?)
     #{
          \transpose  fis ges  $x 
     #})
meistkreuze = #(define-music-function (parser location x) (ly:music?)
     #{
      \vereinfachs  \transpose  ges fis  $x 
     #})
meistbees = #(define-music-function (parser location x) (ly:music?)
     #{
      \vereinfachs  \transpose  fis ges  $x 
     #})
You can use it like:
\new Staff { \transpose c, c { \kreuze ges1 \bees fis \meistkreuze {c d es e fis g a b }   }}
Note, that it doesn't not work in relative mode.
I usually use the possbilitie to expand abbreviations in Frescobaldi.
I type s then <strg> <space> and then I get "\kreuze"
> Hi list,
>
> Is there a scheme snippet that will reprint a sharp as the enharmonic
> flat if it appears after a flat, reprint a flat as the enharmonic
> sharp if it appears after a sharp, and leave a note alone if it
> appears after a natural?  Better yet would be if it always left fis
> and bes alone.
>
> Thanks very much,
> Sandeep