src/modules/inactive/rangy-commands_new.js
function getFurthestAncestor(node) {
        var root = node;
        while (root.parentNode != null) {
            root = root.parentNode;
        }
        return root;
    }
function getFurthestAncestor(node) {
        var root = node;
        while (root.parentNode != null) {
            root = root.parentNode;
        }
        return root;
    }
function getFurthestAncestor ( node ) { var root = node ; while ( root . parentNode != null ) { root = root . parentNode ; } return root ; }
Returns the furthest ancestor of a Node as defined by DOM Range.
Returns the furthest ancestor of a Node as defined by DOM Range .