[typo] Markdown Textfilter

[Mike Purvis]

Hi folks,

I'm hoping there's some easy way to do this. Basically, I really like 
Markdown. A lot more than Textile. So I currently have my Typo set to 
use Markdown for both entries and comments.

One of my favourite features is the ability to just use HTML in places 
where there isn't a markdown equivalent. However, this is not acceptable 
for the comment box... how can I have the comment box use a slightly 
modified Markdown that always encodes angle brackets?

Thanks,

Mike