;;; Regression testing for AVL trees. : :;; Bungled heights in `avltree_splitroot'. = ((((_ 1 _) 7 (_ 9 (_ 10 _))) 15 (((_ 16 _) 20 (_ 21 (_ 22 _))) 23 ((_ 25 _) 26 (_ 27 _)))) 28 (((_ 29 _) 32 ((_ 37 _) 41 (_ 42 _))) 44 (((_ 45 _) 46 (_ 51 (_ 52 _))) 55 (((_ 56 _) 57 _) 58 ((_ 59 _) 61 _))))) D ( = (((_ 3 (_ 4 _)) 6 ((_ 9 _) 10 (_ 12 _))) 15 ((_ 16 (_ 17 _)) 19 ((_ 20 _) 25 _))) D | D ) D