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