- ;; Stems in unnatural (forced) direction should be shortened by
- ;; one staff space, according to [Roush & Gourlay].
- ;; Flagged stems we shorten only half a staff space.
- (stem-shorten . (1.0 0.5))
+ ;; FIXME. 3.5 yields too long beams (according to Ross and
+ ;; looking at Baerenreiter examples) for a number of common
+ ;; boundary cases. Subtracting half a beam thickness fixes
+ ;; this, but the bug may well be somewhere else.