Code blocks

````md
```js
x
```
````
.
<pre><code class="language-md">```js
x
```
</code></pre>

> ```
> a
b
.
<blockquote>
<pre><code>a
</code></pre>
</blockquote>
<p>b</p>
.
```

````
<div>&copy;</div>
    code
***
````
.
<pre><code>&lt;div&gt;&amp;copy;&lt;/div&gt;
    code
***
</code></pre>

```aAb
```
.
<pre><code class="language-aAb"></code></pre>

A reference decodes after the split, so a tab it writes stays in the language.

```a	b c
```
.
<pre><code class="language-a	b"></code></pre>