Hi folks,
I just stumbled over a bug with \displayLilyMusic and scheme-engravers.
The following fails in recent devel:
%%%
\version "2.19.55"
\displayLilyMusic \new Staff \with {
\consists #(lambda (context)
(make-engraver))
} \relative { bes'4 a c b }
%%%
ERROR: In procedure symbol->string:
ERROR: Wrong type argument in position 1 (expecting symbol): #<procedure
#f (context)>
%%%
Until 2.19.53 or 54 this didn't crash, but the output was not a
serialization of the context-mod (\with), so I assume, someone is
working on it :-)
I will have a look into the internals after lunch.
Jan-Peter
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