So is "rewrite_by_lua" also evil?

[Nginx User]

On 13 October 2011 07:30, Nginx User <nginx at nginxuser.net> wrote:
> On 13 October 2011 04:34, agentzh <agentzh at gmail.com> wrote:
>> The debug log data you've provided contains a lot of references to the
>> location @pretty_urls which is missing from your original nginx.conf
>> snippet. Could you please provide a minimized but complete nginx.conf
>> that can reproduce this problem as well as the corresponding debug.log
>> snippet?
>
> server {
>       ...
>       location @pretty_urls {
>               # some rewrite rules to php
>       }
>       location @proxy {
>               include /etc/nginx/firewall.default;
>               proxy_pass http://127.0.0.1:8080;
>               ...
>       }
>       location ~ ^.+\.php$ {
>               content_by_lua 'ngx.exec("@proxy");';
>       }
>       location / {
>               try_files $uri $uri/ @pretty_urls;
>       }
> }
>
> If request ends in ".php" it is sent to @proxy by php location. If not
> ".php", Nginx tries to find and serve resource. If not found, sent to
> @pretty_urls where it will either be rewritten to ".php" or a 404
> error returned.
>

PS: I had earlier thought the issue might be with  the content_by_lua
'ngx.exec("@proxy");'; line but when I tried to use the following ...

      location ~ ^.+\.php$ {
              rewrite_by_lua 'ngx.exec("@proxy");';
      }

... which I thought should work and seems more appropriate, I got an
error equivalent to issuing "return 444".