Re: SpanBar and Lyrics [now also new: with Segfault]

[Alexander Kobel]

Alexander Kobel wrote:
> Note that the second example in the file produces a segfault for me, 
> with 2.12.2 and 2.13.7; 

Sorry for the noise, it's my fault - StaffGroup already has a 
Span_bar_engraver.
Although this should not produce a segfault, but a warning, it's 
certainly not related. And I'm almost certain /this/ bug is already known.

In essence, the snippet now shows that it works as expected if the 
Span_bar_engraver is not in a context containing the Lyrics as a 
sub-context. Don't know if this helps anything.
\version "2.13.7"

\score {
  <<
    \new Staff { \repeat unfold 24 { c''8 } \bar "|." }
    \new ChoirStaff <<
      \new Staff {
        \override Staff.BarLine #'allow-span-bar = ##f
        \override Staff.SpanBar #'allow-span-bar = ##f %% seems to do nothing 
at all
        \new Voice = "upper" \repeat unfold 6 { c''2 }
        \revert Staff.BarLine #'allow-span-bar
      }
      \new Lyrics \lyricsto "upper" \lyricmode {
        %% long-syllables position should not be affected by the forbidden 
SpanBar.
        long-syllable a b c long-syllable d
      }
      \new Staff \repeat unfold 6 { c''2 }
    >>
  >>
  \layout {
    \context {
      \Score
      %% Comment this out to get the expected behaviour, but - well - the 
SpanBar.
      \consists Span_bar_engraver
    }
  }
}

\score {
  <<
    \new StaffGroup {
      <<
        \new Staff { \repeat unfold 24 { c''8 } \bar "|." }
        \new Staff \repeat unfold 24 { c''8 }
      >>
    }
    \new ChoirStaff <<
      \new Staff {
        \new Voice = "upper" \repeat unfold 6 { c''2 }
      }
      \new Lyrics \lyricsto "upper" \lyricmode {
        %% long-syllables position is not affected by the SpanBar in the above 
StaffGroup.
        %% This is the expected behaviour.
        long-syllable a b c long-syllable d
      }
      \new Staff \repeat unfold 6 { c''2 }
    >>
  >>
  \layout {}
}