From 2db6069460e2982be5f8c39cdb0157a664a04bb2 Mon Sep 17 00:00:00 2001
From: Osman Gormus <osman@gorm.us>
Date: Wed, 24 Jan 2018 07:54:30 -0800
Subject: [PATCH] Update markdown.js

The code blocks in the markdown are rendered with the syntax highlighting with matching markup already available in `code.js` helper.
---
 helpers/markdown.js | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/helpers/markdown.js b/helpers/markdown.js
index 6b03f23..39a18a2 100644
--- a/helpers/markdown.js
+++ b/helpers/markdown.js
@@ -1,12 +1,25 @@
+var hljs = require('highlight.js');
 var marked = require('marked');
 
 /**
  * Handlebars block helper that converts Markdown to HTML.
+ * The code blocks in the markdown are rendered with the syntax highlighting.
  * @param {object} options - Handlebars object.
  * @example
  * {{#markdown}}Welcome to [zombo.com](http://zombo.com){{/markdown}}
  * @returns The Markdown inside the helper, converted to HTML.
  */
-module.exports = function(options) {
-  return marked(options.fn(this));
-}
+ module.exports = function(options) {
+   var renderer = new marked.Renderer();
+
+   renderer.code = function(code, language) {
+     if (typeof language === 'undefined') language = 'html';
+
+     var renderedCode = hljs.highlight(language, code).value;
+     var output = `<div class="code-example"><pre><code class="${language}">${renderedCode}</code></pre></div>`;
+
+     return output;
+   };
+
+   return marked(options.fn(this), { renderer });
+ }