Still confused with try_files

[mike]

for a site with multiple "if file does not exist, use this master
controller file" like wordpress, drupal, etc, does a config like this
make sense?

because right now, it doesn't.

the /blog one does, but the /second one doesn.t

server {
        listen 80;
        server_name proto.foo.net;
        index index.php index.html;
        root /home/proto/web/proto.foo.net;
        include /etc/nginx/defaults.conf;
        include /etc/nginx/expires.conf;
        location /blog {
                error_page 404 = /wordpress/index.php?q=$request_uri;
        }
        location /second {
                try_files $uri $uri/ /second/controller.php?slug=$request_uri;
        }
        location ~ \.php$ {
                fastcgi_pass 127.0.0.1:11020;
        }
}


2009/03/16 21:40:29 [error] 29669#0: *638 rewrite or internal
redirection cycle while internal redirect to
"/second/controller.php?slug=/second/contro", client: 123.5.226.17,
server: proto.foo.net, request: "GET /second/contro HTTP/1.1", host:
"proto.mikehost.net"

I really want to use try_files as I believe it is better than using
error_page 404 and if ( !-e $request_filename) type stuff, right? All
I need is to understand the routing better and I'll be on my way. :)

I guess it makes sense about the internal redirection cycle but how
else can I route only requests to the prefix of /second to that
application's controller?

Thanks.