;; todo.
+ (collision-bias . -2.0)
+ (collision-padding . 0.5)
(direction . ,ly:script-interface::calc-direction)
(extra-spacing-width . (+inf.0 . -inf.0))
(font-encoding . fetaText)
(X-offset . ,ly:self-alignment-interface::x-aligned-on-self)
(Y-offset . ,ly:self-alignment-interface::y-aligned-on-self)
(meta . ((class . Item)
+ (object-callbacks . ((X-colliding-grobs . ,ly:self-alignment-interface::x-colliding-grobs)))
(interfaces . (dynamic-interface
dynamic-text-interface
font-interface