Status: Accepted
Owner: ----
Labels: Type-Defect
New issue 3734 by [email protected]: NullVoice should not use transparent stencils
http://code.google.com/p/lilypond/issues/detail?id=3734
The behavior of NullVoice is often confusing (cf.
<URL:http://lists.gnu.org/archive/html/bug-lilypond/2013-12/msg00089.html>).
It should really not turn stencils transparent but omit them completely.
This has not been done so far since it
a) results in several warnings, like slurs not finding attachment points
b) restricts functionality, like forming attachment points for lyrics
The main question seems to be that of "attachment points" which could be
addressed by using point-stencil rather than clearing stencils. However,
this again triggers collision avoidance. So what seems to be rather wanted
is that notes trigger NoteColumns (or similar) without placing stencils of
their own, and omitted stencils like slurs don't even start looking for
attachment points but short-circuit out of their calculations once they
find their stencil being #f.
I am labelling this as "Defect" rather than "Enhancement" since the current
NullVoice behavior is "as designed", but the design is not as much
intentional as it is a concession to unresolved issues.
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