title: Jade syntax about multiple line string in pre tag
body: <p>I have Jade code like this:</p>
  
  <pre><code>pre='&lt;!DOCTYPE html&gt;\n&lt;html lang="en"&gt;\nfoo bar\n&lt;/html&gt;'
  </code></pre>
  
  <p>and it render like this:</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html lang="en"&gt;
  foo bar
  &lt;/html&gt;
  </code></pre>
  
  <p>How can I achieve something like this:</p>
  
  <pre><code>pre='&lt;!DOCTYPE html&gt;\n'
      +'&lt;html lang="en"&gt;\n'
      +'foo bar\n'
      +'&lt;/html&gt;'
  </code></pre>
  
  <p>or like this:</p>
  
  <pre><code>pre="""&lt;!DOCTYPE html&gt;\n"""
      """&lt;html lang="en"&gt;\n"""
      """foo bar\n"""
      """&lt;/html&gt;"""
  </code></pre>
  
  <p><strong>Update:</strong>
  I have tried following code in <a href="https://naltatis.github.io/jade-syntax-docs/" rel="nofollow noreferrer">jade-syntax-docs</a>, it <strong>works</strong>!</p>
  
  <pre><code>   pre
      | &lt;!DOCTYPE html&gt;
      | &lt;html lang="en"&gt;
      | foo bar
      | &lt;/html&gt;
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/KESSy.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KESSy.png" alt="enter image description here"></a></p>
  
  <p>But it <strong>not works</strong> in my test website. My website is generated by <strong>express generator</strong>.
  It render like this:</p>
  
  <p><a href="https://i.stack.imgur.com/PaTgb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PaTgb.png" alt="enter image description here"></a></p>
  
  <p>and html is this:</p>
  
  <p><a href="https://i.stack.imgur.com/g6PYL.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/g6PYL.png" alt="enter image description here"></a></p>
  
  <p>If jade version matters, this is <code>package.json</code>:</p>
  
  <pre><code>{
    "name": "nodejs-crud",
    "version": "0.0.0",
    "private": true,
    "scripts": {
      "start": "node ./bin/www"
    },
    "dependencies": {
      "body-parser": "~1.13.2",
      "cookie-parser": "~1.3.5",
      "debug": "~2.2.0",
      "express": "~4.13.1",
      "jade": "~1.11.0",
      "morgan": "~1.6.1",
      "serve-favicon": "~2.3.0"
    }
  }
  </code></pre>
  
  <p>By the way, I use <code>bootstrap</code>.</p>