avl-tree--do-deleteavl-tree--do-delete is a compiled Lisp function in `
avl-tree.el'. (avl-tree--do-delete CMPFUN ROOT BRANCH DATA TEST NILFLAG) Delete DATA from BRANCH of node ROOT. (See `avl-tree-delete' for TEST and NILFLAG). Return cons cell (SHRUNK . DATA), where SHRUNK is t if the height of the tree has shrunk and nil otherwise, and DATA is the related data.