(lambda (x)
(shift-one-duration-log x dur dots)) arg))
+slashedGrace =
+#(def-grace-function startSlashedGraceMusic stopSlashedGraceMusic
+ (_i "Create slashed graces (slashes through stems, but no slur) from
+the following music expression"))
+
spacingTweaks =
#(define-music-function (parser location parameters) (list?)
(_i "Set the system stretch, by reading the 'system-stretch property of