about ngnix conf

i have two config file, how to combine these.
i tried to do this, but seems not work well. the /edit is not correct for me.

first is

```
log_format www.xxx.com '$remote_addr - $remote_user [$time_local] $request '
'$status $body_bytes_sent $http_referer '
'$http_user_agent $http_x_forwarded_for';
server
{
listen 80;
server_name www.xxx.com xxx.com;
index index.html index.htm index.php default.html default.htm default.php;
root /home/wwwroot/www.xxx.com;

# enforce www (exclude certain subdomains)
# if ($host !~* ^(www|subdomain))
# {
# rewrite ^/(.*)$ $scheme://www.$host/$1 permanent;
# }

# enforce NO www
if ($host ~* ^www\.(.*))
{
set $host_without_www $1;
rewrite ^/(.*)$ $scheme://$host_without_www/$1 permanent;
}

# canonicalize codeigniter url end points
# if your default controller is something other than "welcome" you should change the following
if ($request_uri ~* ^(/welcome(/index)?|/index(.php)?)/?$)
{
rewrite ^(.*)$ / permanent;
}

# removes trailing "index" from all controllers
if ($request_uri ~* index/?$)
{
rewrite ^/(.*)/index/?$ /$1 permanent;
}

# removes trailing slashes (prevents SEO duplicate content issues)
if (!-d $request_filename)
{
rewrite ^/(.+)/$ /$1 permanent;
}

# removes access to "system" folder, also allows a "System.php" controller
if ($request_uri ~* ^/system)
{
rewrite ^/(.*)$ /index.php?/$1 last;
break;
}

# unless the request is for a valid file (image, js, css, etc.), send to bootstrap
if (!-e $request_filename)
{
rewrite ^/(.*)$ /index.php?/$1 last;
break;
}

# catch all
error_page 404 /index.php;

location ~ .*\.(php|php5)?$
{
try_files $uri =404;
fastcgi_pass unix:/tmp/php-cgi.sock;
fastcgi_index index.php;
include fcgi.conf;
}

location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
{
expires 30d;
}

location ~ .*\.(js|css)?$
{
expires 12h;
}

# deny access to apache .htaccess files
location ~ /\.ht
{
deny all;
}

access_log /home/wwwlogs/www.xxx.com.log www.xxx.com;
}
```

second is
```
server {
listen 80;
server_name .xxx.com;

location /edit {
proxy_pass http://10.10.10.10:3000/;
proxy_redirect 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;
}
}
```

detail info plz check http://stackoverflow.com/questions/18545799/nginx-conf-how-to-make-these-together-and-work-well

plz give me a help.