anchor.diff:    (typep object '(and sequence (not string))))
   
   (defun scalar-p (object)
  -  ;; See `sb-int::compound-object-p'.
  -  "Return true if OBJECT is a of one of the following types:
  +  ;; REVIEW: List direct T subclasses instead?
  +  "Return true if OBJECT is of one of the following types:
   - symbol,
   - character,
   - string,
  
positive.code:     :documentation "Local schemes are not accessible to the pages of other schemes.")
     (local-access-p
      nil
      :documentation "Local access allowed schemes can load resources from other schemes.
  
  QtWebEngine-specific.")
     (no-access-p
      nil
      :documentation "No-access schemes cannot access pages with any other scheme.
  
  Has slightly different behavior between ports.")
     (display-isolated-p
      nil
      :documentation "Display isolated schemes cannot be displayed by other schemes.
  
  WebKitGTK-specific.")
     (service-workers-allowed-p
  
negative.code:   (:export-class-name-p t)
    (:export-accessor-names-p t)
    (:accessor-name-transformer (class*:make-name-transformer name))
    (:documentation "Representation of Nyxt-specific internal schemes."))
  
  (defvar *internal-schemes*
    (make-hash-table :test 'equal)
  