I take it that none of the arc people are worried that the arc solution to the challenge doesn't work? I can't write the symbol for the British pound or other high Latin-1 characters, and it doesn't escape correctly for display in HTML.
So far I've only seen a couple of people mention the lack of proper Unicode support and the huge XSS hole, and these were people who implemented the complete problem using some other language.
When will there be an arc program which implements the arc challenge?
