Replace the ShowDown Markdown engine with marked

README.md

@@ -37,7 +37,7 @@ Markup hierarchy needs to be ``<div class="reveal"> <div class="slides"> <sectio
 
 It's possible to write your slides using Markdown. To enable Markdown, add the ```data-markdown``` attribute to your ```<section>``` elements and wrap the contents in a ```<script type="text/template">``` like the example below.
 
-This is based on [data-markdown](https://gist.github.com/1343518) from [Paul Irish](https://github.com/paulirish) which in turn uses [showdown](https://github.com/coreyti/showdown/). Sensitive to indentation (avoid mixing tabs and spaces) and line breaks (avoid consecutive breaks).
+This is based on [data-markdown](https://gist.github.com/1343518) from [Paul Irish](https://github.com/paulirish) modified to use [marked](https://github.com/chjj/marked) to support [Github Flavoured Markdown](https://help.github.com/articles/github-flavored-markdown). Sensitive to indentation (avoid mixing tabs and spaces) and line breaks (avoid consecutive breaks).
 
 ```html
 <section data-markdown>
@@ -161,7 +161,7 @@ Reveal.initialize({
 		{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
 
 		// Interpret Markdown in <section> elements
-		{ src: 'plugin/markdown/showdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
+		{ src: 'plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
 		{ src: 'plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
 
 		// Syntax highlight for <code> elements

index.html

@@ -363,7 +363,7 @@ function linkify( selector ) {
 				// Optional libraries used to extend on reveal.js
 				dependencies: [
 					{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
-					{ src: 'plugin/markdown/showdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
+					{ src: 'plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
 					{ src: 'plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
 					{ src: 'plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
 					{ src: 'plugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } },

plugin/markdown/example.html

@@ -86,7 +86,7 @@
 				// Optional libraries used to extend on reveal.js
 				dependencies: [
 					{ src: '../../lib/js/classList.js', condition: function() { return !document.body.classList; } },
-					{ src: 'showdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
+					{ src: 'marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
 					{ src: 'markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } }
 				]
 			});

plugin/markdown/markdown.js

@@ -2,8 +2,8 @@
 // Modified by Hakim to handle Markdown indented with tabs
 (function(){
 
-    if( typeof Showdown === 'undefined' ) {
-        throw 'The reveal.js Markdown plugin requires Showdown to be loaded';
+    if( typeof marked === 'undefined' ) {
+        throw 'The reveal.js Markdown plugin requires marked to be loaded';
     }
 
     var stripLeadingWhitespace = function(section) {
@@ -175,7 +175,7 @@
 
         var markdown = stripLeadingWhitespace(section);
 
-        section.innerHTML = (new Showdown.converter()).makeHtml(markdown);
+        section.innerHTML = marked(markdown);
 
         if( notes ) {
             section.appendChild( notes );

plugin/markdown/showdown.js

-//
-// showdown.js -- A javascript port of Markdown.
-//
-// Copyright (c) 2007 John Fraser.
-//
-// Original Markdown Copyright (c) 2004-2005 John Gruber
-//   <http://daringfireball.net/projects/markdown/>
-//
-// Redistributable under a BSD-style open source license.
-// See license.txt for more information.
-//
-// The full source distribution is at:
-//
-//				A A L
-//				T C A
-//				T K B
-//
-//   <http://www.attacklab.net/>
-//
-//
-// Wherever possible, Showdown is a straight, line-by-line port
-// of the Perl version of Markdown.
-//
-// This is not a normal parser design; it's basically just a
-// series of string substitutions.  It's hard to read and
-// maintain this way,  but keeping Showdown close to the original
-// design makes it easier to port new features.
-//
-// More importantly, Showdown behaves like markdown.pl in most
-// edge cases.  So web applications can do client-side preview
-// in Javascript, and then build identical HTML on the server.
-//
-// This port needs the new RegExp functionality of ECMA 262,
-// 3rd Edition (i.e. Javascript 1.5).  Most modern web browsers
-// should do fine.  Even with the new regular expression features,
-// We do a lot of work to emulate Perl's regex functionality.
-// The tricky changes in this file mostly have the "attacklab:"
-// label.  Major or self-explanatory changes don't.
-//
-// Smart diff tools like Araxis Merge will be able to match up
-// this file with markdown.pl in a useful way.  A little tweaking
-// helps: in a copy of markdown.pl, replace "#" with "//" and
-// replace "$text" with "text".  Be sure to ignore whitespace
-// and line endings.
-//
-//
-// Showdown usage:
-//
-//   var text = "Markdown *rocks*.";
-//
-//   var converter = new Showdown.converter();
-//   var html = converter.makeHtml(text);
-//
-//   alert(html);
-//
-// Note: move the sample code to the bottom of this
-// file before uncommenting it.
-//
-//
-// Showdown namespace
-//
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\ No newline at end of file

plugin/notes-server/notes.html

@@ -99,7 +99,7 @@
 		<div id="notes"></div>
 
 		<script src="/socket.io/socket.io.js"></script>
-		<script src="/plugin/markdown/showdown.js"></script>
+		<script src="/plugin/markdown/marked.js"></script>
 
 		<script>
 		var socketId = '{{socketId}}';
@@ -113,7 +113,7 @@
 			if (data.socketId !== socketId) { return; }
 
 			if (data.markdown) {
-				notes.innerHTML = (new Showdown.converter()).makeHtml(data.notes);
+				notes.innerHTML = marked(data.notes);
 			}
 			else {
 				notes.innerHTML = data.notes;

plugin/notes/notes.html

@@ -159,7 +159,7 @@
 
 		<div id="notes"></div>
 
-		<script src="../../plugin/markdown/showdown.js"></script>
+		<script src="../../plugin/markdown/marked.js"></script>
 		<script>
 
 			window.addEventListener( 'load', function() {
@@ -175,7 +175,7 @@
 						// No need for updating the notes in case of fragment changes
 						if ( data.notes !== undefined) {
 							if( data.markdown ) {
-								notes.innerHTML = (new Showdown.converter()).makeHtml( data.notes );
+								notes.innerHTML = marked( data.notes );
 							}
 							else {
 								notes.innerHTML = data.notes;