Function: hierarchy-has-root

hierarchy-has-root is a byte-compiled function defined in hierarchy.el.gz.

Signature

(hierarchy-has-root HIERARCHY ITEM)

Documentation

Return t if one of HIERARCHY's roots is ITEM.

A root is an item with no parent.

Source Code

;; Defined in /usr/src/emacs/lisp/emacs-lisp/hierarchy.el.gz
(defun hierarchy-has-root (hierarchy item)
  "Return t if one of HIERARCHY's roots is ITEM.

A root is an item with no parent."
  (seq-contains-p (hierarchy-roots hierarchy) item))