Hello, In *scratch*, by hitting M-x browse-url, I see the following error, Args out of range: #<buffer "*scratch*">, 0, 0 The immediate cause is that set-text-properties calls for the [0, 0] range of the current buffer in browse-url-url-at-point when there is no URL text around point. (defun browse-url-url-at-point () (let ((url (thing-at-point 'url))) (set-text-properties 0 (length url) nil url) url)) GNU Emacs's set-text-properties, however, doesn't fail in the same situation. I don't know which is a better place to fix the symptoms, fsf-compat/text-props.el or browse-url.el. Regards, -- Daiki Ueno