Re: port .htaccess to nginx conf

I have tried this:
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location / {
rewrite ^(.*)$ /index.php?q=$1 break;
}
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And this:
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if ($request_filename !~ "index.php$"){
set $rule_0 1$rule_0;
}
if ($rule_0 = "1"){
rewrite ^/(.*)$ /index.php?q=$1 last;
}
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Not working, code 500, Internal Server Error.

Any comments?