anchor.diff:  
   (defun load-history-url (url-or-node
                            &key (buffer (current-buffer))
  -                           (message "History entry is already the current URL."))
  +                              (message "History entry is already the current URL."))
     "Go to HISTORY-NODE's URL."
     (unless (quri:uri-p url-or-node)
       (setf url-or-node (url (htree:data url-or-node))))
  
positive.code:     (copy-to-clipboard input)
      (echo "Text copied.")))
  
  (define-command autofill ()
    "Fill in a field with a value from a saved list."
    (let ((selected-fill (prompt
                          :prompt "Autofill"
                          :sources (make-instance 'prompter:source
                                                  :name "Autofills"
                                                  :constructor (autofills *browser*)
                                                  :actions '()))))
      (cond ((stringp (autofill-fill selected-fill))
             (%paste :input-text (autofill-fill selected-fill)))
            ((functionp (autofill-fill selected-fill))
             (%paste :input-text (funcall (autofill-fill selected-fill)))))))
  
  (defmethod nyxt:on-signal-notify-uri ((mode web-mode) url)
    (declare (type quri:uri url))
  
negative.code:     (lambda (minibuffer)
        (fuzzy-match (input-buffer minibuffer) ring-items))))
  
  (define-class ring-source (prompter:source)
    ((prompter:name "Ring")
     (ring :initarg :ring :accessor ring :initform nil)
     (prompter:must-match-p t)
     (prompter:constructor
      (lambda (source)
        (containers:container->list (ring source))))
     (prompter:actions
      (list (make-command paste* (ring-items)
              (%paste :input-text (first ring-items))))))
    (:export-class-name-p t))
  
  (define-command paste-from-ring ()
    "Show `*browser*' clipboard ring and paste selected entry."
    (prompt
     :prompt "Paste from ring"
     :sources (list (make-instance 'ring-source
                                   :ring (nyxt::clipboard-ring *browser*)))))
  
  (define-command copy ()
    "Copy selected text to clipboard."
  