Dear scheme experts,
I am trying to supply a constructed pair as a value for a grob property in
a music function, but it seems no matter what I try I get an error such as:
`warning: type check for `bracket-flare' failed; value `(num . num)' must
be of type `pair of numbers''. A non-working example is pasted below. In
addition to the code below, I also tried binding the variables in advance
with let* and I tried constructing the pair with cons. I even tried binding
a value to the constructed pair, but everything returned the same error.
Please help!
Kevin
\version "2.18.2"
rotateBracket =
#(define-music-function (parser location num)
(number?)
#{
\once \override HorizontalBracket.bracket-flare = #'(num . num)
#})
\relative {
\rotateBracket #1
b\startGroup b\stopGroup
}
\layout {
\context {
\Voice
\consists "Horizontal_bracket_engraver"
}
}
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