Ok, i was trying to do drupal as a subdirectory on my site, but i've hit a problem and I think its a bug. Im using 10.04 ubuntu, the nginx ppa with 1.0.11 nginx.

If i have the following config's and i try to retrieve the file http://mysite/drupal/somefile:

location ~ /drupal(.*) {
index index.php;
alias /local_config/$1;
try_files $uri @drupalrewrite;
}

The file nginx is apparently trying retrieve "/local_config//somefile/drupal/somefile" rather then "/local_config//somefile", which leads me to believe $uri isnt being set correctly by nginx.

If instead, i have this as a config:

location /drupal/ {
index index.php;
alias /local_config/;
try_files $uri @drupalrewrite;
}

it does the right thing, and try files will attempt to get "/local_config/somefile", so im really confused as to why it happens. Either im doing something wrong or in the first example, $uri gets set incorrectly? some small chunks of debug output to show what i mean:

From the first config:
2012/01/13 04:03:18 [debug] 22504#0: *4 http request line: "GET /drupal/somefile HTTP/1.1"
2012/01/13 04:03:18 [debug] 22504#0: *4 http uri: "/drupal/somefile"
2012/01/13 04:03:18 [debug] 22504#0: *4 http args: ""
...
2012/01/13 04:03:18 [debug] 22504#0: *4 using configuration "/drupal(.*)"
...
2012/01/13 04:03:18 [debug] 22504#0: *4 trying to use file: "/drupal/somefile" "/local_config//somefile/drupal/somefile" <-- path looks incorrect?


From the second config:
2012/01/13 04:26:58 [debug] 23019#0: *1 http request line: "GET /drupal/somefile HTTP/1.1"
2012/01/13 04:26:58 [debug] 23019#0: *1 http uri: "/drupal/somefile"
...
2012/01/13 04:26:58 [debug] 23019#0: *1 using configuration "/drupal/"
...
2012/01/13 04:26:58 [debug] 23019#0: *1 trying to use file: "somefile" "/local_config/somefile" <--- correct