Re: define-music-function -> unexpected EVENT_FUNCTION

[Klaus Blum]

Hi Anders, 

the "\rightHandFinger" command can only be used for a single note, not for a
whole "music" expression that could also be a chord or a sequence of notes
and rests. 
Replacing "ly:music?" by "ly:pitch?" should do the trick:

%
---------------------------------------------------------------------------------
\version "2.19.15"

meTrans =
#(define-music-function (parser location mus txt) (ly:pitch? string?)
   #{
     \transpose c cis $mus \rightHandFinger
\markup\normal-text\bold\fontsize #0 $txt
   #}
   )


  {
  \transpose c cis c' \rightHandFinger \markup\normal-text\bold\fontsize #0
"A"
  \meTrans c' "a"
  }
%
---------------------------------------------------------------------------------

If you want to transpose more than just one note, you should split things
up: 
One function to apply the fingering markup on single notes, another function
to transpose the whole music expression:

%
---------------------------------------------------------------------------------
\version "2.19.15"

rhf =
#(define-music-function (parser location txt) (string?)
   #{
     -\rightHandFinger \markup\normal-text\bold\fontsize #0 $txt
   #}
   )

meTrans =
#(define-music-function (parser location mus) (ly:music?)
   #{
     \transpose c cis $mus
   #}
   )


  {
  \transpose c cis c' \rightHandFinger \markup\normal-text\bold\fontsize #0
"A"
  \meTrans {c' -\rhf "first" d' e' f' -\rhf "last"}
  }
%
---------------------------------------------------------------------------------

Cheers, 
Klaus



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