anchor.diff:  This leverages `mode-status' which can be specialized for individual modes."
     (spinneret:with-html-string
       (when (nosave-buffer-p buffer) (:span "⚠ nosave"))
  -    (:button :type "button"
  +    (:button :type "button" :class "button"
                :onclick (ps:ps (nyxt/ps:lisp-eval '(nyxt:toggle-modes)))
                :title (str:concat "Enabled modes: " (list-modes buffer)) "✚")
       (loop for mode in (sera:filter (alex:conjoin #'enabled-p #'visible-in-status-p)
  
positive.code: (export-always 'format-status-url)
  (defun format-status-url (buffer)
    (spinneret:with-html-string
      (:button :type "button"
               :onclick (ps:ps (nyxt/ps:lisp-eval '(nyxt:set-url)))
               (format nil " ~a — ~a"
                       (render-url (url buffer))
  
negative.code:                          (sera:filter-map #'quri:uri-domain
                                            (mapcar #'url (sort-by-time (buffer-list))))
                           :test #'equal)
            collect (:button :type "tab" :class "button"
                             :onclick (ps:ps (nyxt/ps:lisp-eval
                                              `(nyxt::switch-buffer-or-query-domain ,domain)))
                             domain))))
  