Add show alternate.

show-alternate/index.js

+// ==UserScript==
+// @name	Show alternate links
+// @namespace	http://hugo.hornquist.se
+// @version 0.1.0
+// @description Show alternate links
+// @author	hugo@lysator.liu.se
+// @match *
+// @updateURL https://git.lysator.liu.se/hugo/web-monkey-scripts/raw/master/show-alternate/index.js
+// @downloadURL https://git.lysator.liu.se/hugo/web-monkey-scripts/raw/master/show-alternate/index.js
+// @source https://git.lysator.liu.se/hugo/web-monkey-scripts/-/tree/master/show-alternate
+// @grant GM_addStyle
+// ==/UserScript==
+
+(function () {
+	'use strict';
+
+	let id = `id-${Math.random()}`
+
+	let outer = document.createElement('div');
+	let inner = document.createElement('div');
+	outer.id = id
+	let ul = document.createElement('ul');
+	outer.appendChild(inner);
+	inner.appendChild(ul);
+
+	for (let link of document.querySelectorAll('link[rel=alternate]')) {
+		let li = document.createElement('li');
+		let a = document.createElement('a')
+		a.href = link.href
+		a.textContent = `${link.type} - ${link.title}`
+		li.appendChild(a)
+		ul.appendChild(li)
+	}
+
+	GM_addStyle(`
+	#${id} {
+		margin: 0 !important;
+		position: absolute;
+		top: 0;
+		right: 0;
+		background: red;
+	}
+
+	#${id} > div {
+		display: none;
+	}
+
+	#${id}:hover > div {
+		display: block;
+	}
+	`)
+})();