Enable passing options for parsing Markdown.

bnjmnt4n · bnjmnt4n · commit 90b301d0a03b · 2016-12-08T17:41:55.000+08:00
Closes #1163, #1495.
diff --git a/README.md b/README.md
@@ -160,6 +160,18 @@ Special syntax (in html comment) is available for adding attributes to the slide
 </section>
 ```
 
+#### Configuring `marked`
+
+We use [marked](https://github.com/chjj/marked) to parse Markdown. To customise marked's rendering, you can pass in options when [configuring Reveal](#configuration):
+
+```javascript
+Reveal.initialize({
+	// Options which are passed into marked
+	// See https://github.com/chjj/marked#options-1
+	markdown: {
+		smartypants: true
+	}
+});
 
 ### Configuration
 
diff --git a/plugin/markdown/markdown.js b/plugin/markdown/markdown.js
@@ -17,18 +17,6 @@
 	}
 }( this, function( marked ) {
 
-	if( typeof marked === 'undefined' ) {
-		throw 'The reveal.js Markdown plugin requires marked to be loaded';
-	}
-
-	if( typeof hljs !== 'undefined' ) {
-		marked.setOptions({
-			highlight: function( code, lang ) {
-				return hljs.highlightAuto( code, [lang] ).value;
-			}
-		});
-	}
-
 	var DEFAULT_SLIDE_SEPARATOR = '^\r?\n---\r?\n$',
 		DEFAULT_NOTES_SEPARATOR = 'note:',
 		DEFAULT_ELEMENT_ATTRIBUTES_SEPARATOR = '\\\.element\\\s*?(.+?)$',
@@ -189,7 +177,7 @@
 				markdownSections += '<section '+ options.attributes +'>';
 
 				sectionStack[i].forEach( function( child ) {
-					markdownSections += '<section data-markdown>' +  createMarkdownSlide( child, options ) + '</section>';
+					markdownSections += '<section data-markdown>' + createMarkdownSlide( child, options ) + '</section>';
 				} );
 
 				markdownSections += '</section>';
@@ -391,6 +379,24 @@
 	return {
 
 		initialize: function() {
+			if( typeof marked === 'undefined' ) {
+				throw 'The reveal.js Markdown plugin requires marked to be loaded';
+			}
+
+			if( typeof hljs !== 'undefined' ) {
+				marked.setOptions({
+					highlight: function( code, lang ) {
+						return hljs.highlightAuto( code, [lang] ).value;
+					}
+				});
+			}
+
+			var options = Reveal.getConfig().markdown;
+
+			if ( options ) {
+				marked.setOptions( options );
+			}
+
 			processSlides();
 			convertSlides();
 		},
diff --git a/test/test-markdown-options.html b/test/test-markdown-options.html
@@ -0,0 +1,41 @@
+<!doctype html>
+<html lang="en">
+
+	<head>
+		<meta charset="utf-8">
+
+		<title>reveal.js - Test Markdown Options</title>
+
+		<link rel="stylesheet" href="../css/reveal.css">
+		<link rel="stylesheet" href="qunit-1.12.0.css">
+	</head>
+
+	<body style="overflow: auto;">
+
+		<div id="qunit"></div>
+		<div id="qunit-fixture"></div>
+
+		<div class="reveal" style="display: none;">
+
+			<div class="slides">
+
+				<section data-markdown>
+					<script type="text/template">
+						## Testing Markdown Options
+
+						This "slide" should contain 'smart' quotes.
+					</script>
+				</section>
+
+			</div>
+
+		</div>
+
+		<script src="../lib/js/head.min.js"></script>
+		<script src="../js/reveal.js"></script>
+		<script src="qunit-1.12.0.js"></script>
+
+		<script src="test-markdown-options.js"></script>
+
+	</body>
+</html>
diff --git a/test/test-markdown-options.js b/test/test-markdown-options.js
@@ -0,0 +1,26 @@
+Reveal.addEventListener( 'ready', function() {
+
+	QUnit.module( 'Markdown' );
+
+	test( 'Options are set', function() {
+		strictEqual( marked.defaults.smartypants, true );
+	});
+
+	test( 'Smart quotes are activated', function() {
+		var text = document.querySelector( '.reveal .slides>section>p' ).textContent;
+
+		strictEqual( /['"]/.test( text ), false );
+		strictEqual( /[“”‘’]/.test( text ), true );
+	});
+
+} );
+
+Reveal.initialize({
+	dependencies: [
+		{ src: '../plugin/markdown/marked.js' },
+		{ src: '../plugin/markdown/markdown.js' },
+	],
+	markdown: {
+		smartypants: true
+	}
+});
diff --git a/test/test-markdown.html b/test/test-markdown.html
@@ -13,7 +13,7 @@
 	<body style="overflow: auto;">
 
 		<div id="qunit"></div>
-  		<div id="qunit-fixture"></div>
+		<div id="qunit-fixture"></div>
 
 		<div class="reveal" style="display: none;">
 
