tampermonkey-github-expand-all

gistfile1.txt

// ==UserScript==
// @name         (github) Expand all hidden file contents
// @namespace    http://github.com/
// @version      0.1
// @description  (github) Expand all hidden file contents
// @author       You
// @match        https://github.com/*/*/pull/*
// @grant        GM_registerMenuCommand
// ==/UserScript==

(function() {
  'use strict';
  var expandHiddenFileContents = function() {
      document.querySelectorAll("button.load-diff-button").forEach(function(el) { el.click() })
  }

  GM_registerMenuCommand('(github) Expand all hidden codes', function() {
    expandHiddenFileContents();
  }, 'r');
})();