Bookmarklet to expand all collapsed comments in a GitHub pull request (places where it says "discussed an outdated diff")

bookmarklet.js

// DEPRECATED: See "Expand All Comments" at https://gist.github.com/peterflynn/ace5dd3d7a8ec645cd42 for
// a more up to date, maintained version of this.

// Original bookmarklet from this gist (does not work anymore):
// javascript:(function() { $(".outdated-diff-comment-container").addClass("open"); }());

// Newer, working version (from link above as of Jan 2017):
// javascript:(function() { document.querySelectorAll(".outdated-diff-comment-container").forEach(function(n) {n.classList.add("open")}) }());

Updated version:

javascript: Array.from(document.getElementsByClassName('outdated-diff-comment-container'))
.concat(Array.from(document.getElementsByClassName('outdated-comment')))
.forEach(l => l.classList.add('open'));

Detail:
https://coderwall.com/p/akdgoq/expand-all-outdated-diff-comments-in-a-github-pull-request

In case you are interested: This was recently implemented in the browser extension sindresorhus/refined-github

Updated JS bookmark for recent Github redesign:
javascript:Array.from(document.getElementsByClassName('outdated-comment')).forEach(l => l.setAttribute('open',true));