Wordpress is a pretty neat blogging platform, but it falls over quite spectacularly when trying to write code in posts. I write a lot of code for #! code and so I have understand what needs to be encoded to make code examples work.

For code example on #! code I use the <code> tag and I encode the following characters.

• < into &lt;
• > into &gt;
• " into &quot;
• ' into &#39;

Note: You must be in HTML mode in your Wordpress editor or everything will be double encoded.