anchor.diff:              (:p (:a :class "button"
                       :href (lisp-url `(nyxt::configure-slot
                                         'default-modes
  -                                      'buffer
  +                                      '(buffer web-buffer)
                                         :value '(append '(emacs-mode) %slot-default))
                                       `(nyxt/emacs-mode:emacs-mode :activate t)
                                       `(nyxt/vi-mode:vi-normal-mode :activate nil))
  
positive.code:             (:p (:a :class "button"
                      :href (lisp-url `(nyxt::configure-slot
                                        'default-modes
                                        'buffer
                                        :value '%slot-default)
                                      `(nyxt/emacs-mode:emacs-mode :activate nil)
                                      `(nyxt/vi-mode:vi-normal-mode :activate nil))
  
negative.code:             (:p (:a :class "button"
                      :href (lisp-url `(nyxt::configure-slot
                                        'default-modes
                                        '(buffer web-buffer)
                                        :value '(append '(vi-normal-mode) %slot-default))
                                      `(nyxt/vi-mode:vi-normal-mode :activate t)
                                      `(nyxt/emacs-mode:emacs-mode :activate nil))
  