UnicodeEncodeError when using redirect_to with non-ascii keywords

[Ian Lewis]

I have a urls.py that looks something like

from django.conf.urls.defaults import *

urlpatterns = patterns('django.views.generic.simple',
    url(r'^jp/(?P<tag_name>.+)\;', 'redirect_to', {'url': '/jp/tag/%(tag_name)s'}),
)

But if the tag_name is non-ascii then I get the following error:

Traceback (most recent call last):

 File "/home/ianlewis/.virtualenvs/test/lib/python2.5/site-packages/django/core/handlers/base.py", line 92, in get_response
   response = callback(request, *callback_args, **callback_kwargs)

 File "/home/ianlewis/.virtualenvs/test/lib/python2.5/site-packages/django/views/generic/simple.py", line 39, in redirect_to
   return klass(url % kwargs)

 File "/home/ianlewis/.virtualenvs/test/lib/python2.5/site-packages/django/http/__init__.py", line 414, in __init__
   self['Location'] = redirect_to

 File "/home/ianlewis/.virtualenvs/test/lib/python2.5/site-packages/django/http/__init__.py", line 320, in __setitem__
   header, value = self._convert_to_ascii(header, value)

 File "/home/ianlewis/.virtualenvs/test/lib/python2.5/site-packages/django/http/__init__.py", line 309, in _convert_to_ascii
   value = value.encode('us-ascii')

UnicodeEncodeError: 'ascii' codec can't encode characters in position 8-11: ordinal not in range(128), HTTP response headers must be in US-ASCII format

This may be related to #11522 but as I'm not redirecting to a relative url I wanted to make sure this case was also covered.

[Karen Tracey]

Dupe of #11522. I changed the summary there to remove the overly specific problem description; the discussion already made it clear the root of the problem is the location header is not consistently being url-encoded before being converted to ASCII.