Removing the stem engraver?

[Don Blaheta]

When I run the following code, I get no syntax errors, but it doesn't
work; it gets as far as "Calculated line breaks..." and then lilypond
exits abnormally with exit code 246.  If I remove any one of the lines
marked with a "%---", it runs just fine.  So it appears to be some sort
of interaction between making new pseudo-"nested" Voice contexts,
stacking them, and removing the stems.

  \version "2.7.33"
  
  \score {
    \new Voice { <<
      \new Voice  %---
        { c'' }   %---
      { g }   %---
    >> }
    \layout {
      \context {
        \Voice
        \remove "Stem_engraver"    %---
      }
    }
  }

It may be related to the following curious behaviour: when you remove
the Stem_engraver, every note that interacts with a slur (including just
being underneath it) gives a "programming error: no stem for note
column; continuing, cross fingers".  For example, with the following
code:

  \version "2.7.33"
  \score {
    \new Voice \relative c' {
      d e( f) g
    }
    \layout {
      \context {
        \Voice
        \remove "Stem_engraver"
      }
    }
  }

In these cases, though, the program finishes and actually renders a .ps
file with serviceable if not optimal slurs.  All of this is in 2.7.33-1
on OS X.

-- 
-=-Don address@hidden<http://www.blahedo.org/>-=-
The one good thing about repeating your mistakes is that you know when
to cringe.