Hi Michael, > There were many 8th notes alternating with 8th rests > (which should be merged by Lilypond, but can't be automatically)
Did you try the merge-rests-on-positioning trick? \version "2.19.15" #(define (rest-score r) (let ((score 0) (yoff (ly:grob-property-data r 'Y-offset)) (sp (ly:grob-property-data r 'staff-position))) (if (number? yoff) (set! score (+ score 2)) (if (eq? yoff 'calculation-in-progress) (set! score (- score 3)))) (and (number? sp) (<= 0 2 sp) (set! score (+ score 2)) (set! score (- score (abs (- 1 sp))))) score)) #(define (merge-rests-on-positioning grob) (let* ((can-merge #f) (elts (ly:grob-object grob 'elements)) (num-elts (and (ly:grob-array? elts) (ly:grob-array-length elts))) (two-voice? (= num-elts 2))) (if two-voice? (let* ((v1-grob (ly:grob-array-ref elts 0)) (v2-grob (ly:grob-array-ref elts 1)) (v1-rest (ly:grob-object v1-grob 'rest)) (v2-rest (ly:grob-object v2-grob 'rest))) (and (ly:grob? v1-rest) (ly:grob? v2-rest) (let* ((v1-duration-log (ly:grob-property v1-rest 'duration-log)) (v2-duration-log (ly:grob-property v2-rest 'duration-log)) (v1-dot (ly:grob-object v1-rest 'dot)) (v2-dot (ly:grob-object v2-rest 'dot)) (v1-dot-count (and (ly:grob? v1-dot) (ly:grob-property v1-dot 'dot-count -1))) (v2-dot-count (and (ly:grob? v2-dot) (ly:grob-property v2-dot 'dot-count -1)))) (set! can-merge (and (number? v1-duration-log) (number? v2-duration-log) (= v1-duration-log v2-duration-log) (eq? v1-dot-count v2-dot-count))) (if can-merge ;; keep the rest that looks best: (let* ((keep-v1? (>= (rest-score v1-rest) (rest-score v2-rest))) (rest-to-keep (if keep-v1? v1-rest v2-rest)) (dot-to-kill (if keep-v1? v2-dot v1-dot))) ;; uncomment if you're curious of which rest was chosen: ;;(ly:grob-set-property! v1-rest 'color green) ;;(ly:grob-set-property! v2-rest 'color blue) (ly:grob-suicide! (if keep-v1? v2-rest v1-rest)) (if (ly:grob? dot-to-kill) (ly:grob-suicide! dot-to-kill)) (ly:grob-set-property! rest-to-keep 'direction 0) (ly:rest::y-offset-callback rest-to-keep))))))) (if can-merge #t (ly:rest-collision::calc-positioning-done grob)))) alternating_A = { c''8 r d'' r e'' r d'' r c''1 } alternating_B = \transpose c'' c' \alternating_A \score { \new Staff \with { \override RestCollision.positioning-done = #merge-rests-on-positioning } << << { \voiceOne \alternating_A } \\ \new Voice { \voiceTwo \alternating_B } >> >> } \score { \new Staff \with { \override RestCollision.positioning-done = #merge-rests-on-positioning } << \transpose c'' d'' << { \voiceOne \alternating_A } \\ \new Voice { \voiceTwo \alternating_B } >> >> } Hope this helps! Kieren. _______________________ Kieren MacMillan, composer www: <http://www.kierenmacmillan.info> email: i...@kierenmacmillan.info _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user