Some minor nits...
https://codereview.appspot.com/555160043/diff/549440043/lily/slur.cc File lily/slur.cc (right): https://codereview.appspot.com/555160043/diff/549440043/lily/slur.cc#newcode495 lily/slur.cc:495: "Slurs are formatted by a number of combination of left/right " s/combination/combinations/ And please replace all trailing blanks in the documentation string with leading ones. https://codereview.appspot.com/555160043/diff/549440043/lily/slur.cc#newcode496 lily/slur.cc:496: "end-point, and then picking the slur with the lowest demerit score. " s/end-point/end points/ https://codereview.appspot.com/555160043/diff/549440043/lily/slur.cc#newcode498 lily/slur.cc:498: "(ie. note heads) in the direction in half space increments until we " s/ie./i.e.,/ (the final comma is for the sake of PDF output) https://codereview.appspot.com/555160043/
