2015-06-16 0:10 GMT+02:00 Klaus Blum <benbigno...@gmx.de>: > Dear list fellows, > > I am trying to write a function which outputs chord symbols after > transposing them. > But what type of data do I need for the input of the "\chordmode" or > "\chords" function, i.e stuff like > { c1 d:m f g:7 } > ? > > > > \chords { c1 d:m f g:7 } > > returns: > C Dm F G7 > as expected. > > > > mychords = > #(define-music-function (parser location arg) (ly:music?) > #{ > \chords { $arg } > #}) > \mychords { c1 d:m f g:7 }
The above is equivalent to \mychords \notemode { c1 d:m f g:7 } Can't work. You have to state \chordmode explicitly or work _inside_ chordmode. Either of this work: \mychords \chordmode { c1 d:m f g:7 } \chordmode { \mychords { c1 d:m f g:7 } } Ofcourse 'mychords' contains some redundancy then ;) Below the same HTH, Harm > > returns: > C D F G > Additions like ":m" or ":7" are ignored and produce an error message > because they are not part of a regular music expression. > > > transchordsI = > #(define-music-function (parser location arg) (ly:music?) > #{ > \chords { \transpose c d { $arg } } > #}) > \transchordsI { c1 d:m f g:7 } > > and > > transchordsII = > #(define-music-function (parser location arg) (ly:music?) > #{ > \transpose c d { \chords { $arg } } > #}) > \transchordsII { c1 d:m f g:7 } > > obviously suffer the same problem. > > > However, > \trans { \chords { c1 d:m f g:7 } } > works without problems. > It seems that the OUTPUT of "\chords" is accepted as a music expression. > > Surprisingly, even > \chords { \trans { c1 d:m f g:7 } } > works, and I can't understand why... > > > > I've tried nearly each and every data type ("predicate"). If "ly:music?" > isn't the right choice, what do I need? > Am I missing something else? > > Thanks for any hint > Klaus > > chord_function_fail.ly > <http://lilypond.1069038.n5.nabble.com/file/n177895/chord_function_fail.ly> > chord_function_fail.pdf > <http://lilypond.1069038.n5.nabble.com/file/n177895/chord_function_fail.pdf> > > > > -- > View this message in context: > http://lilypond.1069038.n5.nabble.com/Input-for-chords-What-data-type-tp177895.html > Sent from the User mailing list archive at Nabble.com. > > _______________________________________________ > lilypond-user mailing list > lilypond-user@gnu.org > https://lists.gnu.org/mailman/listinfo/lilypond-user _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user