github.com raw diff link greasemonkey script

github-commit-diff-link.user.js

// ==UserScript==
// @name           github.com raw diff link
// @namespace      github.com
// @description    Appends raw diff link
// @include        https://github.com/*/*/commit/*
// ==/UserScript==

var
	file    = document.getElementsByClassName('file')[0],
	code    = file.getElementsByTagName('code')[0],
	li      = code.parentNode.parentNode,
	loc     = window.location + '',
	rawlink = document.createElement('a')
;

if(window.location.hash != ''){
	loc = loc.replace(window.location.hash,'');
}

rawlink.setAttribute('hotkey', 'r');
rawlink.appendChild(document.createTextNode('view diff'));
rawlink.setAttribute('href',loc + '.diff');
rawlink.setAttribute('style','margin-left:1em;');

li.appendChild(rawlink);