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-(define (shift-one-duration-log music shift dot)
- " add SHIFT to ly:duration-log and optionally
+(define-public (shift-one-duration-log music shift dot)
+ " add SHIFT to duration-log of 'duration in music and optionally
a dot to any note encountered. This scales the music up by a factor
2^shift * (2 - (1/2)^dot)"
(let ((d (ly:music-property music 'duration)))