NGinx as a reverse proxy and http_sub_folder module (and httpsubs)

[thms007]

I am trying to reverse proxy my website and modify the content. To do so, I
compiled nginx with sub_filter --with-http-sub_module as well as httpsubs .
It now accepts the sub_filter directive, but it does not work
somehow.(http://wiki.nginx.org/HttpSubsModule)

Here is my configuration:
server {
    listen       8080;
    server_name  www.xxx.com;

    access_log  /var/log/nginx/www.xxx.access.log  main;
    error_log  /var/log/nginx/www.xxx.error.log;
    root   /usr/share/nginx/html;
    index  index.html index.htm;

    ## send request back to apache1 ##
    location / {
       sub_filter <title> '<title>test</title>';
       sub_filter_once on;


     proxy_pass  http://www.google.fr;
     proxy_next_upstream error timeout invalid_header http_500 http_502
http_503 http_504;
     proxy_redirect off;
     proxy_buffering off;
     proxy_set_header        Host            $host;
     proxy_set_header        X-Real-IP       $remote_addr;
     proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;

   }
}

I also tried with the subs_filter directives, none of them work.

Can anyone help me ? 

Regards,

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,260892,260892#msg-260892