Add option for cookie checking [feature request] about nginx_accept_language_module HOT 1 OPEN

I actually do this on my nginx configuration file:

set_from_accept_language $lang en fr de;

map $cookie_lang $header_lang {
default $cookie_lang;
"" $lang;
}

So I set $header_lang to the value of either the lang cookie or if there's no cookie to the value of my set_from_accept_language.

I'm planning to write a case a study in the next few weeks of how I use this in production together with Varnish.

from nginx_accept_language_module.