+ (X-offset . ,(ly:make-simple-closure
+ `(,+
+ ,(ly:make-simple-closure
+ (list ly:break-alignable-interface::self-align-callback))
+ ,(ly:make-simple-closure
+ (list ly:self-alignment-interface::x-aligned-on-self)))))
+ (self-alignment-X . ,LEFT)
+ (break-align-symbols . (time-signature))
+ (non-break-align-symbols . (multi-measure-rest-interface))
+ (non-musical . #t)