Clicks all the visible [+] buttons in a list view. Useful in BC's Category / Classification view.

expand-all-tree-items.user.js

// ==UserScript==
// @name         Expand all tree items
// @namespace    https://gist.github.com/r-k-b/
// @version      1.0.0
// @description  Clicks all the visible [+] buttons in a list view. Useful in BC's Category / Classification view.
// @author       Robert K. Bell
// @homepage     https://gist.github.com/r-k-b/2ae9376e03f26d7b6713c576a177f349
// @downloadURL  https://gist.github.com/r-k-b/2ae9376e03f26d7b6713c576a177f349/raw/expand-all-tree-items.user.js
// @include      *://*/*
// @grant        none
// @run-at       context-menu
// ==/UserScript==

/* jshint esnext: true */

(() => {
  jQuery('.rtPlus').click();
  // TODO: repeat until all levels expanded
});