spaces in URI

[cgarver]

As I have other countries like Canada to deal with, it can get rather
unwieldy doing every permutation of case.  What about something like
this:

rewrite (?i)^/us(.*)$ /us$1;
location ^~ /us {
    proxy_pass       http://backendcms/;
    proxy_set_header Host xxx.xxx.xxx;

It seems to be allowing www.xxxx.xxx/uS/ to work.  Not sure if there
will be any pitfalls later...

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,97031,135058#msg-135058