There are a couple things i wonder about, from time to time, about the code tag. One, the width makes a lot of code wrap when on my screen there is no need. Two, code can get longer and i wish it were a readmore tag instead.
The code tag seems to wrap at 70 characters, is that to support terminals? Perhaps that could be an option, so those with wider screens have the option of seeing it unwrapped.
The readmore tag is intended to keep a post from being too long. Yet, though a code tag pretties it up, it does not shorten it. Leaving it long certainly allows for quicker reading on the page, though it hinders getting to the start of the next post.
Just some thoughts.