Due to popular demand, here is the draft code of markItUp! 2 started 3 years ago. Unfortunately I have no time to work on it and finish it, so, instead of letting the project die, here it is.
This version is slow, buggy, non cross-browser and absolutely not proper for production or anything else.
Please, do not contact me to tell me there are thousands of bugs. I know it ;)
Home: http://v2.markitup.jaysalvat.com/
Documentation: http://v2.markitup.jaysalvat.com/documentation/