anchor.diff:                 (str:split
                   "."
                   (or (uiop:getenv "LANG") "")))))
  -  (setf (ffi-tracking-prevention (buffer mode)) nil))
  +  (setf (ffi-tracking-prevention (buffer mode)) nil)
  +  (hooks:remove-hook (request-resource-hook (buffer mode))
  +                     #'strip-tracking-parameters))
  
positive.code:     :export nil
      :documentation "The timezone the system had before enabling this mode.")))
  
  (defmethod enable ((mode reduce-tracking-mode) &key)
    (setf (old-timezone mode) (uiop:getenv "TZ")
          (uiop:getenv "TZ") "UTC")
    (setf (old-user-agent mode) (ffi-buffer-user-agent (buffer mode))
          (ffi-buffer-user-agent (buffer mode)) (preferred-user-agent mode))
    (setf (ffi-preferred-languages (buffer mode)) (preferred-languages mode))
    (setf (ffi-tracking-prevention (buffer mode)) t))
  
  (defmethod disable ((mode reduce-tracking-mode) &key)
    (setf (uiop:getenv "TZ") (old-timezone mode))
  
negative.code:     :documentation "The user agent to set when enabling `reduce-tracking-mode'.
  It's Safari on macOS by default, because this way we break fewer websites while
  still being less noticeable in the crowd.")
     ;; Taken from https://github.com/brave/brave-core/blob/master/browser/net/brave_site_hacks_network_delegate_helper.cc#L31
     (query-tracking-parameters
      '("fbclid" "gclid" "msclkid" "mc_eid"
        "dclid"
        "oly_anon_id" "oly_enc_id"
        "_openstat"
        "vero_conv" "vero_id"
        "wickedid"
        "yclid"
        "__s"
        "rb_clickid"
        "s_cid"
        "ml_subscriber" "ml_subscriber_hash"
        "twclid"
        "gbraid" "wbraid"
        "_hsenc" "__hssc" "__hstc" "__hsfp" "hsCtaTracking"
        "oft_id" "oft_k" "oft_lk" "oft_d" "oft_c" "oft_ck" "oft_ids"
        "oft_sk"
        "igshid"))
     (old-user-agent
      nil
      :type (or null string)
  