Removing index.php from WordPress URLs with nginx

Since I use nginx and varnish with WordPress (and lighttpd as the webserver), I was interested in using nginx to remove the index.php “directory” that is added to WordPress URLs. Perhaps this can be disabled with a more appropriate WordPress configuration, however since I didn’t want to mess with that, I did it myself. The code is “simple,” however it took a few hours to figure out.

if ($uri ~ index.php)
{
	set $redirect_allow 1;
}
if ($uri !~ ((154)|(admin-ajax.php)))
{
	set $redirect_allow 1$redirect_allow;
}

if ($redirect_allow = 11)
{
	rewrite ^\/(index.php)\/(.*)$ /$2 redirect;
}

if ($uri !~ ((!((\/)!(.+))))|(\/index.php\/(.)$)|(\/(wp-admin)(.))|(\/(wp-content)(.))|(\/(wp-login)(.))|(\/(wp-includes)(.*)))
# If the URL is not empty, or it doesn't contain index.php or or doesn't contain wp-content, wp-login, wp-includes, then:
{
	rewrite ^\/(.+)$ /index.php/$1 break;
}

proxy_pass http://127.0.0.1:8070/;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;

And that is how it is done.