I encountered an unexpected error where reduce is unbound when
specifying a lambda within a \context block:
%%%%
\version "2.19.82"
\layout { \context { \Voice
\override NoteHead.color = #(lambda (grob)
(display (reduce + 0 '(1 2 3 4))) red)
} }
{ b'4 }
%%%%
Compare to the following snippets that work:
%%%%
\version "2.19.82"
{ \override NoteHead.color = #(lambda (grob)
(display (reduce + 0 '(1 2 3 4))) red)
b'4 }
%%%%
\version "2.19.82"
#(define (foo grob)
(display (reduce + 0 '(1 2 3 4))) red)
\layout { \context { \Voice
\override NoteHead.color = #foo
} }
{ b'4 }
%%%%
fold is also unbound, although map works fine.
Am I missing a subtlety here, or is this a bug?
-- Aaron Hill
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