Trying to come to terms with lilypond Scheme, as a beginner, I am trying to add items to a notehead stencil, using a callback function.
My first attempt to simply get the stencil and return it does not succeed. #(define expNoteHeadStencil (lambda (grob) (let* ((stil (ly:grob-property grob 'stencil))) stil))) calling with: \override Staff.NoteHead.stencil = #expNoteHeadStencil In general, how does one create a stencil for use with the stencil functions in Scheme? How can you make a stencil to be used as an argument to ly:stencil-add? Somebody should write a book Lilypond Programming for Dummies. (I am serious). Andrew
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