It appears that LilyPond 2.18.2 prints a warning if a trill pitch
occurs under a slur, regardless of the chance of collision.
\relative c' {
% OK
\pitchedTrill d2\startTrillSpan ~ e d4. r8\stopTrillSpan
% warning: Ignoring grob for slur: TrillPitchAccidental. avoid-slur
not set?
% But the slur is nowhere near colliding with the trill pitch accidental!
c4 ( \pitchedTrill d4\startTrillSpan e ~ d4. ) r8\stopTrillSpan
}
This fixes it:
\override TrillPitchAccidental.avoid-slur = #'inside
But shouldn't this be a default? When would you seriously want a trill
pitch accidental to be outside the slur? Not to mention that it would
make no sense to put the trill pitch accidental outside, and the trill
pitch head inside.
Small issue, work-around-able, but seems a bit untidy.
hjh
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