I'm using 2.18.0, and I need to move the "8va" part of an ottava bracket to the left to avoid a collision with a beam. I've tried several things, to no avail: using \override Staff.OttavaBracket.X-offset has no effect as far as I can tell; using \override Staff.OttavaBracket.shorten-pair gives me control over the dashed line, but doesn't affect the "8va" text. I've looked at the other properties in the internals reference, but I can't find anything that looks promising. What do I have to override to make this change?
Nick
--
And she forgot the stars, the moon, and sun,
And she forgot the blue above the trees,
And she forgot the dells where waters run,
And she forgot the chilly autumn breeze...
— Keats, "Isabella, or the Pot of Basil"