Hi all,
I'm trying to apply event functions to music passed into a music
function like that:
\version "2.19.57"
test =
#(define-music-function (mus)(ly:music?)
#{
#mus \startGroup
#})
{
\test c' d' e' f' \stopGroup
}
(of course this is not what I ultimately want to achieve, but the
nucleus from which I'll be able to continue on my own).
This fails with "error: syntax error, unexpected EVENT_IDENTIFIER". I
think it is because the #mus expression is somehow already complete
(differently from when used in regular input) and I have to somehow
*apply* the \startGroup event function to the #mus argument.
>From \displayMusic I can see that it is added as a NoteGroupingEvent to
the note's articulations, but I'd like to ask if there's a more
straightforward way to attach the event to the music than rebuilding the
music expression in Scheme.
OTOH I will want to do that for the first *and last* element in a music
expression (in order to apply the start and stop command to a sequence
of notes), so I may *have* to extract the Scheme representation anyway?
TIA
Urs
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