is there any way to make Substitution module to work with gzip?

[tOmasEn]

Substitution module http://wiki.nginx.org/NginxHttpSubModule can replace
text for content from proxy_pass.

In order to use this function, it have to turn gzip transfer off from server
to server, which is understandable all right.

But I want when after substitution module replaced the text, nginx can gzip
it and send it to client. Is there any way to do that?

here is my sample conf

location  /source {
                proxy_set_header  X-Forwarded-For
$proxy_add_x_forwarded_for;
                proxy_set_header Host $http_host;
                proxy_redirect off;
                proxy_pass http://source;
                proxy_set_header    Accept-Encoding "";
                sub_filter_types text/xml;
                sub_filter '3236699304584559'  '9418887123196030' ;
                sub_filter_once off;
                break;
 }

-- 
Tomasen
http://twitter.com/ShooterPlayer
http://t.sina.com.cn/Tomasen
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