Regular Expression global redirect

[altiamge]

I'm not able to get either one of these to work. I just upgraded to
nginx 1.0.12 just to make sure my version wasn't an issue. I also
checked my PCRE version.

# pcretest
PCRE version 6.6 06-Feb-2006

Here are the errors I'm getting with each example:

Example 1
-----------------------------------------------
server {
     listen 80;
     server_name ~^www\.(?<domain>.+)$;
     rewrite ^ $scheme://$domain$request_uri? permanent;
}

## Error:
[emerg] pcre_compile() failed: unrecognized character after (?< in
"^www\.(?<domain>.+)$" at "domain>.+)$"


Example 2
------------------------------------------------
server {
     server_name ^~www\.(?<domain>.*)$;
     return 301 http://$domain;
}

server {
     server_name ^~(?<domain_name>[^\.]*)\.(?<tld>[^\.]*)$;
     location / {
          proxy_pass  http://websites;
     }
}

## Error:
nginx: [emerg] unknown "domain" variable


thanks,
altimage

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,222984,222990#msg-222990