Nginx, try_files and the Accept-Language header

gistfile1.txt

location / {
  root /my/web/site;
  # Note (1) the '/' before $lang and (2) the lack of '/' before $uri (which
  # already starts with '/').
  try_files /$lang$uri /$lang$uri.html /$lang$uri/ $uri $uri.html $uri/ =404;
}