2015-09-23 17:50 GMT+02:00 Simon Albrecht <simon.albre...@mail.de>:
> Hello,
>
> is it possible to have a Scheme function output a bookpart? In the attached
> example and my real-world setup, I get ‘error: bad expression type’.
>
> TIA, Simon

Hi Simon,

this may give you a starting point:

\version "2.19.27"

test =
#(define-scheme-function (mus) (ly:music?)
  (ly:book-process
    (ly:make-book-part (list (ly:make-score mus)))
    $defaultpaper
    $defaultlayout
    (ly:parser-output-name)))

m = { c'4 }

\test \m


HTH,
  Harm

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