+ 'optional_config' =>
+ { 'stdout' => '/^(
+ dkim_(canon|domain|private_key|selector|sign_headers|strict)
+ |gnutls_require_(kx|mac|protocols)
+ |hosts_(requ(est|ire)|try)_(dane|ocsp)
+ |hosts_(avoid|nopass|require|verify_avoid)_tls
+ |socks_proxy
+ |tls_[^ ]*
+ )($|[ ]=)/x' },
+