Modifying constructor for escape-letter-r structures.
(change-escape-letter-r x )
This is an often useful alternative to make-escape-letter-r.
We construct a new escape-letter-r structure that is a copy of
This is an ordinary
Macro:
(defmacro change-escape-letter-r (x &rest args) (std::change-aggregate 'escape-letter-r x args 'nil 'change-escape-letter-r 'nil))