Function: ewoc-delete

ewoc-delete is a byte-compiled function defined in ewoc.el.gz.

Signature

(ewoc-delete EWOC &rest NODES)

Documentation

Delete NODES from EWOC.

View in manual

Probably introduced at or before Emacs version 22.1.

Source Code

;; Defined in /usr/src/emacs/lisp/emacs-lisp/ewoc.el.gz
(defun ewoc-delete (ewoc &rest nodes)
  "Delete NODES from EWOC."
  (ewoc--set-buffer-bind-dll-let* ewoc
      ((L nil) (R nil) (last (ewoc--last-node ewoc)))
    (dolist (node nodes)
      ;; If we are about to delete the node pointed at by last-node,
      ;; set last-node to nil.
      (when (eq last node)
        (setf last nil (ewoc--last-node ewoc) nil))
      (delete-region (ewoc--node-start-marker node)
                     (ewoc--node-start-marker (ewoc--node-next dll node)))
      (set-marker (ewoc--node-start-marker node) nil)
      (setf L (ewoc--node-left  node)
            R (ewoc--node-right node)
            ;; Link neighbors to each other.
            (ewoc--node-right L) R
            (ewoc--node-left  R) L
            ;; Forget neighbors.
            (ewoc--node-left  node) nil
            (ewoc--node-right node) nil))))