<p>These should all get escaped:</p>
<p>Backslash: \</p>
<p>Backtick: `</p>
<p>Asterisk: *</p>
<p>Underscore: _</p>
<p>Left brace: {</p>
<p>Right brace: }</p>
<p>Left bracket: [</p>
<p>Right bracket: ]</p>
<p>Left paren: (</p>
<p>Right paren: )</p>
<p>Greater-than: &gt;</p>
<p>Hash: #</p>
<p>Period: .</p>
<p>Bang: !</p>
<p>Plus: +</p>
<p>Minus: -</p>
<p>These should not, because they occur within a code block:</p>
<pre><code>Backslash: \\

Backtick: \`

Asterisk: \*

Underscore: \_

Left brace: \{

Right brace: \}

Left bracket: \[

Right bracket: \]

Left paren: \(

Right paren: \)

Greater-than: \&gt;

Hash: \#

Period: \.

Bang: \!

Plus: \+

Minus: \-
</code></pre>
<p>Nor should these, which occur in code spans:</p>
<p>Backslash: <code>\\</code></p>
<p>Backtick: <code>\`</code></p>
<p>Asterisk: <code>\*</code></p>
<p>Underscore: <code>\_</code></p>
<p>Left brace: <code>\{</code></p>
<p>Right brace: <code>\}</code></p>
<p>Left bracket: <code>\[</code></p>
<p>Right bracket: <code>\]</code></p>
<p>Left paren: <code>\(</code></p>
<p>Right paren: <code>\)</code></p>
<p>Greater-than: <code>\&gt;</code></p>
<p>Hash: <code>\#</code></p>
<p>Period: <code>\.</code></p>
<p>Bang: <code>\!</code></p>
<p>Plus: <code>\+</code></p>
<p>Minus: <code>\-</code></p>