Constraints induced by a terminated tree that matches
Theorem:
(defthm constraints-from-tree-match-vchar (implies (and (tree-match-element-p tree (element-rulename *vchar*) *grammar*) (tree-terminatedp tree)) (and (<= (char-code #\!) (car (tree->string tree))) (<= (car (tree->string tree)) (char-code #\~)))) :rule-classes nil)