Modifying constructor for eprefix-option-some structures.
(change-eprefix-option-some x [:val <val>])
This is an often useful alternative to make-eprefix-option-some.
We construct a new eprefix-option-some structure that is a copy of
This is an ordinary
Macro:
(defmacro change-eprefix-option-some (x &rest args) (std::change-aggregate 'eprefix-option-some x args '((:val . eprefix-option-some->val)) 'change-eprefix-option-some 'nil))