Re: Accidentals from note grob

[Thomas Morley]

Am Do., 1. Aug. 2019 um 15:23 Uhr schrieb Nils Nommensen
<address@hidden>:
>
> Sorry to bother you with this, but I'm really new to Lilypond and Scheme. I 
> need a String representation of the name. If I use display on the return 
> value, I get something like: "accidentals.natural"#<unspecified>".
> How can I extract the "natural" part?

Well, it's not clear what you want.
"accidentals.natural" _is_ the glyph-name in the Emmentaler-font.
Ofcourse you could do some string-operation on it to get the
"natural", but I have my doubts this would be helpfull.

Probably you don't want the glyph-name displayed, but rather see
whether there is some (which) alteration:

\version "2.19.83"

#(define get-accidental
  (lambda (note)
    (let*  ((acc (ly:grob-object note 'accidental-grob))
            (alt (ly:grob-property acc 'alteration)))

      (newline)
      (write
        (case alt
          ((-1) "double-flat")
          ((-1/2) "flat")
          ((0) "natural")
          ((1/2) "sharp")
          ((1) "double-sharp")
          (else (format #f "not yet kown alteration: ~a" alt)))
      ))))

{
    \override NoteHead.after-line-breaking = #get-accidental
    ceses'
    ces'
    c'
    cis'
    cisis'

    ceh'
}

HTH,
  Harm