On 2019-05-12 3:40 am, David Kastrup wrote:
Rok Kršmanc <rok.krsm...@gmail.com> writes:
Hi!
I would like to write a function for the next music expression:
\once \override TextScript.extra-offset = #'(0 . 1)
c^"o"
Here is my try:
f =
#(define-music-function (parser location offset music)
(number? ly:music?)
#{
\once \override TextScript.extra-offset = #'(0 . $offset)
$music ^"o"
#})
When I call this function:
\f #1 c
I get syntax error:
unexpected '^'
What am I doing wrong?
First it seems like a bad idea to redefine \f ("forte"). But the main
problem is that an expression like $music cannot take articulations
(this has been ameliorated to some degree in current development,
likely
appearing as 2.21 eventually).
You can achieve about the same effect with << $music <>-"o" >> namely
putting the articulation instead on a simultaneously executing empty
chord.
Would an event function possibly make more sense? Consider:
%%%%
\version "2.19.82"
foo = #(define-event-function (offset) (number?)
#{ \tweak extra-offset #(cons 0 offset)
^"foo" #})
{ b'4 \foo #0.5 b' b' \foo #-1 }
%%%%
-- Aaron Hill
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