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    <p>I just got this answer from David Kastrup, one of the developers of LilyPond:</p> <hr> <p>The "octave transposition" happens because basically \transpose c c is the same as \absolute (as LilyPond does not apply \relative to transposed music).</p> <p>\absolute is not necessary in connection with \repeat unfold: \repeat unfold knows how to deal with relative music.</p> <p>Version 2.14.2 is awfully old. At any rate, there is currently issue <a href="http://code.google.com/p/lilypond/issues/detail?id=3673" rel="nofollow">http://code.google.com/p/lilypond/issues/detail?id=3673</a> in the LilyPond tracker, and the respective code can be found at <a href="https://codereview.appspot.com/30890043/diff/40001/scm/music-functions.scm" rel="nofollow">https://codereview.appspot.com/30890043/diff/40001/scm/music-functions.scm</a></p> <p>And there we get indeed into Scheme programming. The respective defmacro-public would likely work even in 2.14 though #{ #} might not work properly.</p> <p>With that definition, your double definition would become:</p> <p>double = #(define-music-function (parser location note) (ly:music?) (make-relative (note) note #{ $note $note #}))</p> <p>and would then work in both absolute and relative mode. If the 2.14 #{ #} does not jibe with make-relative, writing (make-sequential-music (list (ly:music-deep-copy note) (ly:music-deep-copy note))) should serve as a Scheme replacement.</p> <p>The original problem becomes easier to understand once you realize that it's just a simple code replacement, so \relative { \double c' } becomes \relative { c' c' } using different octaves. The make-relative macro will to the \relative operation only on a single note, and then paste the results into the music expression.</p>
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    1. POHow to abbreviate 'note with the same note an octave higher, parenthesized' in Lilypond?
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    1. USgilberto.agostinho.f
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