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 }
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
