In the 5th bar, I'm puzzled as to why the running
trill line does not span
to the end of the bar when I explicitly attached the
\stopTrillSpan at the
last spacer quarter note of the bar? I could "cheat"
by attaching
\stopTrillSpan to a hidden grace note at the end of
the bar but I wouldn't
like to do this everytime.
In fact this is what I do every time. Is it so much
trouble? You can also attach the \stopTrillSpan to a
rest and hide that, eg.
\once \override Rest #'transparent = ##t
r8\stopTrillSpan