What does this bogus code in urlparse do?

[John Nagle]

See "http://svn.python.org/view/python/trunk/Lib/urlparse.py?rev=60163&view=markup"

Look at "urljoin".

What does the code marked "# XXX The stuff below is bogus in various
ways..." do?

I think it's an attempt to remove leading "../" components in URLs, which are
generally ignored.  But it also does something with commas, and it's not
clear why.

				John Nagle