Hi,
I'm confused about the handling of accidentals in tied notes/chords.
ly:note-column-accidentals returns either an AccidentalPlacement object
or an empty list. I found out that the AccidentalPlacement's X-extent
interacts in a somehow strange way with the NoteColumn's X-offset, but
that's (probably) not the issue here.
What I'm wondering here is: in a tied note/chord there is an
AccidentalPlacement object with an X-extent, even if the accidentals are
not displayed:
\version "2.19.57"
{
\override TieColumn.after-line-breaking =
#(lambda (tc)
(let* ((rb (ly:grob-parent (ly:spanner-bound tc RIGHT) Y))
(accs (ly:note-column-accidentals rb))
(accs-extent
(if (null? accs)
"No AccidentalPlacement object."
(ly:grob-property accs 'X-extent))))
(display accs-extent)))
% No accidentals in chord: No AccidentalPlacement object
%<c' f' g' b'>1 ~ q
% Accidentals in chord: AccidentalPlacement object on the right column
% even if it is not shown.
<c' fis' gis' bis'>1 ~ q
}
% displays (-4.05 . -0.35)
In order to determine the spacing to the left of a tied note column I
thought I could rely on the presence or absence of the
AccidentalPlacement, but obviously this isn't the case. So could someone
give an explanation (or at least a suggestion) why this
AccidentalPlacement is there and - more importantly - how I can reliably
determine the presence or absence of the visual accidentals (at the time
of stencil override)? TIA Urs
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