Mechanize problem with proxies

Hi, I’m using Mechanize-0.8.4 to pass some traffic through a custom
proxy. This proxy requires basic authentication.
If I request, I will get redirected to or
whatever. The problem is that if the request is https, and if the
proxy server sends a redirect (302) to the client, mechanize will

c:/ruby/lib/ruby/1.8/net/http.rb:2106:in error!': 302 "Moved Temporarily" (Net::HTTPRetriableError) from c:/ruby/lib/ruby/1.8/net/http.rb:2115:in value’
from c:/ruby/lib/ruby/1.8/net/http.rb:588:in connect' from c:/ruby/lib/ruby/1.8/net/http.rb:557:in do_start’
from c:/ruby/lib/ruby/1.8/net/http.rb:552:in start' from c:/ruby/lib/ruby/gems/1.8/gems/mechanize-0.8.4/lib/www/mechanize.rb:450:in fetch_page’

Instead of giving this error, I would expect mechanize to follow the
redirect, as it normally does without using a proxy.

Any hint appreciated, thanks!