The engraver certainly works correctly, since RhythmicStaff contexts work
correctly. On the other hand, I looked back into earlier versions of the
manual
as far back as version 2.2 and I doubt that the example has ever worked.
The problem is not the engraver itself, but that the \improvisationOn
> I'm not top posting.
%% pitch_squash_engraver is broken in 2.11.22
%% consequently \improvisationOn is broken
%% this is example from
%%http://lilypond.org/doc/v2.11/Documentation/user/lilypond/Improvisation#Improvisation
%% consider adding this to regression test?
\new Staff \with {
\consis
