problem with hidden notes

[kristof]

hi list,

i hope you can help me again with a little problem i have..

context:
i'm trying to do some complex notation for a piece in contemporary 
idiom, and as the \laissezVibrer didn't want to behave like i wanted, 
i tried to simulate one more suitable to my needs,  so that i can let 
it depart only from only the highest and lowest notes of a chord (the 
normal behaviour with chords seems to be to let it either come from 
every note or from none?) , and so that i can control the length and 
tilt the slur a bit up or down.

the strategy i tried for now, is by using phrasing slurs with hidden 
endnotes, with doubleSlurs set to true..
(maybe this is not the best approach and some one can give me some 
hints for a better way to do this?)

anyway, below is the way i'm trying to do it (and the result in attachement)
it may seem a bit awkward as a music example, but that's because i 
stripped out a lot of things that weren't relevant to show my problem

so, the actual problem i have now:
after hiding the noteheads and stem of my hidden chord (the last one 
on the staff), there still remains a dashed vertical line..

can anyone tell me why it is there and how i can get rid of it?

thanks a lot!

Kristof


---leftoverlinetest.ly----


{
        \time 2/16
        \override Staff.TimeSignature #'break-visibility = ##(#f #f 
#f)  %break-visibility property requires a vector of three booleans. 
These control respectively whether bar lines are printed at the end 
of a line, in the middle of lines, and at the beginning of lines
        \override DynamicLineSpanner #'staff-padding = #4
        \cadenzaOn

        <<
                \relative c'
                {
                        \voiceOne \stemUp
                        \set doubleSlurs = ##t
                        \override Stem #'transparent = ##t   %hide stem
                        <a~ beh fih'~>16(
                        \revert Stem #'transparent %restore stem in 
original state
                }
        >>
        \time 4/32
        <<
                \relative c'
                {
                        \override Stem #'transparent = ##t   %hide stem
                        c!32 cih
                        \override NoteHead #'stencil = 
#ly:text-interface::print  %hide notehead
                        \override NoteHead #'text = #(markup #:musicglyph "")
                        <d, fih'>16)
                        \revert Stem #'transparent %restore stem in 
original state
                        \revert NoteHead #'stencil %restore notehead
                        \revert NoteHead #'text
                }
        >>
}

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