Status: Accepted
Owner: ----
Labels: Type-Defect
New issue 1902 by [email protected]: scheme engravers
cause "warning: Attempting to remove nonexisting listener."
http://code.google.com/p/lilypond/issues/detail?id=1902
Reported by Reinhold:
"If one uses a scheme engraver that instantiates itself for each context,
i.e.
\consists #(lambda (context) ...)
then using listeners will cause the warning:
"Warnung: Attempting to remove nonexisting listener.""
\layout {
\context {
\Voice
\consists
#(lambda (context) `((listeners . ((note-event . ,(lambda (eng ev)
#t))))))
% This works, because it does not create a copy for each voice:
% \consists
% #'((listeners . ((note-event . ,(lambda (eng ev) #t)))))
}
}
\relative c'' { <<
{ c4 } \\ { c4 }
}
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