Hello list,
here's my approach to inherit the input-location in nested music-functions:
--snip--
\version "2.15.40"
% a test function, which simply outputs the location
test = #(define-music-function (parser location mus)(ly:music?)
(ly:input-message location "~A" location) mus)
% a scheme-function to execute a music-function with a specific location
argument
#(define-public (ly:music-function-exec fun parser location . args)
(apply (ly:music-function-extract fun) parser location args))
% a nested music-function
fun = #(define-music-function (parser location mus)(ly:music?)
#{
$(ly:music-function-exec test parser location mus)
#})
% example
\new Staff {
% this will output this location, *not* the location _inside_ of the fun
function
\fun \relative c'' {
c des ees
}
}
--snip--
This is helpful, if nested music-function-calls output warnings or other
ly:input-message's.
I use contructs like this (for example) to nest the \shape command and
calculate the needed offset parameters from "easier" values.
Cheers, Jan-Peter
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