This would appear to be a feature of the "implicit" voice creation, as
described in the Notation Reference 1.5.2. If you explicitly name the
voices:
alt = \relative c'' { a2 << { \voiceTwo \stemDown \hs \ignore e2 } \new
Voice { \voiceTwo a4( gis) } >> }
I think you'll find you get what you want.
For future reference, queries where it's not clear it's a bug are usually
best sent to the lilypond-user group initially.
--
Phil Holmes
Bug Squad
"Herman Grootaers" <her...@grootaers-nl.com> wrote in message
news:loom.20100803t175510-...@post.gmane.org...
I'm not top posting.
Greetings all,
I have recently restarted a project of myself, because I do have some free
time to spare.
So I started to upgrade a number of scores I had already done and I
discovered
the following excerpt which does behave weird. It is in the alto-part of a
four-voice a-capella choir-piece which in one bar is split. The lyrics
however
are not handled correctly, due to the fact that the alto-part is
completely
gone, but will be taken on in the next bar.
If I reduce the excerpt to the offending part of the bar I get an error
indicating that the alto-part is missing, although is printed. strange
This behaviour is also in version 2.12.2, earlier versions I cannot
remember
if this was already in place.
Yours,
Herman Grootaers
Ps: I am subscribed to the bu-list, i.e. I do receive the mails from the
bug-
list.
Lilypond-listing <<
\version "2.12.3"
global = { \key g \major
\time 4/4
}
ignore = \override NoteColumn #'ignore-collision = ##t
hs = \once \override NoteColumn #'force-hshift = #1.7
sop = \relative c'' { c2 \hs b }
alt = \relative c'' { a2 << { \stemDown \hs \ignore e2 } \\ { a4( gis) }
>> }
ten = \relative c' { e2 d }
bas = \relative c { e2 <<e, e'>> }
koor = \lyricmode { bla bla }
\score
{ \context ChoirStaff
<< \context Staff = "women"
<< \clef treble
\set Staff.instrumentName = \markup { \center-column { Soprano
Alto } }
\context Voice = "soprano" { \voiceOne << \global \sop >> }
\context Voice = "alto" { \voiceTwo << \global \alt >> }
\context Lyrics = alto { s1 }
>>
\context Staff = "men"
<< \clef bass
\set Staff.instrumentName = \markup { \center-column { Tenor
Bas } }
\context Voice = "tenor" { \voiceOne << \global \ten >> }
\context Voice = "bass" { \voiceTwo << \global \bas >> }
>>
\context Lyrics = alto \lyricsto alto \koor
>>
\layout { \context { \Staff } }
}
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