Comment 4 for bug 672704

I imagine we should do what users expect and what works, rather than slavishly follow the spec - I don't think that gains us anything. We already do this for instance by not marking up trailing punctuation in a URL - technically, it could form part of the URL but in practice that is almost never the case.

We will need to work on this to sort I18N domain names too. http://www.☣.net/