How to write raw code in WordPress

As a corollary to one of my previous posts, and after extensive googling to avoid one bloody fastidious problem for one trying to blog about code (the WordPress auto-formatting which will trim your indentation and convert code enclosed between html tags in.. well what's turns out to be in reality), I found this guideline by WordPress support which is definitely godsend.

While WordPress.com doesn’t allow you to use potentially dangerous code on your blog, there is a way to post source code for viewing. We have created a shortcode you can wrap around source code that preserves its formatting and even provides syntax highlighting for certain languages, like so:
Wrap your code in these tags:
[sourcecode language='css']
your code here
[/sourcecode]
Any of the following can be used for the language parameter (using one is required):

• cpp
• csharp
• css
• delphi
• html
• java
• jscript
• php
• python
• ruby
• sql
• vb
• xml

Code in between the [sourcecode] tags will automatically be encoded for display, you don’t need to worry about HTML entities or anything.
Alex Gorbatchev’s syntaxhighligher Google Code project was used to implement this feature.