Problem with terminating an extender

[Johannes Koch]

Hi,

I have a problem with extenders for a split Voice context:
"Lyrics Soprano 1" contains lyrics for the upper soprano voice when the 
soprano is split. I want the extenders in the lyrics to terminate when 
the voice split ends. This is not possible after the first "Ooo", while 
the extender terminates with the word "psst" which of course is not 
connected to a note.

I use lilypond version 2.10.29.

--- snip ---------------
\include "deutsch.ly"

sop = {
\clef violin
\key c \major
\time 4/4
<<
 \new Voice = "Soprano.1" {\voiceOne e'1-( | f' | e'4-) }
 \new Voice = "Soprano.2" {\voiceTwo r2 c'-( | d'1 | c'4-) }
>>
 \breathe c'2.-(
d'2. c'8-) r
<<
 \new Voice = "Soprano.1" {\voiceOne r2 r8 e'4.-( | f'1 | e'8-) }
 \new Voice = "Soprano.2" {\voiceTwo r8 c'4.-(~ c'2 | d'1 | c'8-) }
 >>
 r8 r4 r2
r e'4-( c'-)
}

ten = {
\clef "G_8"
\key c \major
\time 4/4
r4 g2.-(
a1
g4-) \breathe <<
 {g2.-( | a~ a8-)}
 \\
 {e2.-( | f~ f8-)}
 >> r8
r2 g-(
a1
g8-) r r4 r2
r2 g4-( e-)
}

lyrSopA = \lyricmode {
\set associatedVoice = #"Soprano.1"
Ooo1*9/4 __
_1*13/8 _8
_2 _8 Ooo1. __
psst_8 _2. _1
}

lyrSop = \lyricmode {
\set associatedVoice = #"Soprano.2"
_2 _8 Ooo1*13/8 __
\set associatedVoice = #"Soprano"
ooo1*13/8 __ _8
\set associatedVoice = #"Soprano.2"
_8
Ooo1*2 __ _8 _2. _2
\set associatedVoice = #"Soprano"
ooo __
}

lyrTen = \lyricmode {
\set associatedVoice = #"Tenor"
_4 Ooo1*2 __
\set associatedVoice = #"Tenor.2"
ooo1*13/8 __ _8
\set associatedVoice = #"Tenor"
_2
Ooo1*13/8 __ _8 _1*5/4
ooo2 __
}

\score {
  \context ChoirStaff <<
    \context Lyrics = "Lyrics Soprano 1" \lyrSopA
    \context Voice = "Soprano" \sop
    \context Lyrics = "Lyrics Soprano" \lyrSop
    \context Voice = "Tenor" \ten
    \context Lyrics = "Lyrics Tenor" \lyrTen
  >>
  \layout {
  }
}
--- snip ---------------

--
Johannes Koch
In te domine speravi; non confundar in aeternum.
                            (Te Deum, 4th cent.)