2014-10-24 13:57 GMT+02:00 Peter Crighton <petecrigh...@gmail.com>: > 2014-10-24 11:05 GMT+02:00 Robin Bannister <r...@dataway.ch>: > >> >> The source file music-functions.scm defines >> music-map >> which you can use for this: >> >> >> bgr = #(define-music-function (parser location music) (ly:music?) >> (music-map (lambda (note) >> #{ >> \tweak NoteHead.font-size #-2 >> \tweak Accidental.font-size #-2 >> #note >> #}) >> music )) >> >> >> There is an advanced example in the regression tests: >> http://www.lilypond.org/doc/v2.18/input/regression/ >> collated-files.html#music-map.ly > > > Thanks a lot, Robin! I wouldn’t have thought it would be this easy … >
Although I now came upon the following situation with rests: \version "2.19.13" bgr = #(define-music-function (parser location music) (ly:music?) (music-map (lambda (note) #{ \tweak NoteHead.font-size #-2 \tweak Accidental.font-size #-2 #note #}) music)) \new Voice << \relative c' { c4 d r f } \relative c' \bgr { e4 f r a } >> I get these warnings: /home/peter/bgr.ly:21:16: warning: Two simultaneous rest events, junking this one \relative c' \bgr { /home/peter/bgr.ly:18:10: warning: Previous rest event here c4 d r f Although it doesn’t seem to affect the output, it is still not desired behaviour, and I don’t know why the \bgr function causes it. Any ideas? > > But maybe this could be better documented? I never would have thought of > looking for it in the regression tests (in fact I didn’t even know about > them). > Are there other places to learn about Scheme in LilyPond than the Scheme > tutorial? > -- Peter Crighton | Musician & Music Engraver based in Mainz, Germany http://www.petercrighton.de
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