Preview
tildes in urls are not special:
http://example.org/~user/-> http://example.org/~user/
~ escapes the URL, but the URL is not parsed as inline text:
~http://example**.org**/~user/-> http://example**.org**/~user/~http://example//.org///~user/-> http://example//.org///~user/
Another test; there is no Creole formatting inside URLs:
http://example//.org///~user/-> http://example//.org///~user/http://example**.org**/~user/-> http://example**.org**/~user/
