Merge proxy_protocol setting of listen directives. It's now enough to specify proxy_protocol option in one listen directive to enable it in all servers listening on the same address/port. Previously, the setting from the first directive was always used.

au BufRead,BufNewFile *.nginx set ft=nginx
au BufRead,BufNewFile */etc/nginx/* set ft=nginx
au BufRead,BufNewFile */usr/local/nginx/conf/* set ft=nginx
au BufRead,BufNewFile nginx.conf set ft=nginx