When building a blog entry, if i use the 'code' element (or others that I've added to the mix), any double carriage-return gets parsed into a closing paragraph tag and a new opening paragraph tag.

(i've had to replace the [ and ] marks and < and > tags but you'll see what I mean)

So doing something like:
{code}my first line of code

second line{/code}

This obviously causes XML errors, since the parsed content looks something like:

(pre)my first line of code(/p)(p)second line(/pre)

How would I 'fix' this, where the line feeds are all just interpreted as break tags instead of paragraph tags, only when in a 'code' element?