Slurs and PhrasingSlurs with simultaneous start or end

[Nick Payne]

The automatic positioning of Slurs and PhrasingSlurs that both either 
start or finish on the same note is not very good. See below. Commercial 
scores that I have where this happens position the two slurs so that 
they don't intersect or touch, as in the second bar where the 
PhrasingSlur has been tweaked so that it doesn't intersect the slur:

\version "2.14.0"

offsetPhrasingSlurPos =
  #(define-music-function (parser location offsets) (pair?)
    #{
       \once \override PhrasingSlur #'positions = #(lambda (grob)
     `(,(+ (car $offsets) (cdar (ly:phrasingslur::calc-control-points 
grob))) .
       ,(+ (cdr $offsets) (cdr (cadddr 
(ly:phrasingslur::calc-control-points grob))))))
    #})

\relative c'' {
    \time 3/4
    \slurDashed
    c16\(( d) e f g8\) c,8 d16\(( c) b a\)
    \offsetPhrasingSlurPos #'(0.3 . 0) c16\(( d) e f g8\) c,8 
\offsetPhrasingSlurPos #'(0.3 . 0) d16\(( c) b a\)
}


Nick

test.preview.png
Description: PNG image