Disambiguation between
Theorem:
(defthm fail-hexdig-when-match-*cwsp (implies (and (tree-list-match-repetition-p trees (*_ *c-wsp*) *grammar*) (tree-list-terminatedp trees) (mv-nth 0 (parse-hexdig rest-input))) (mv-nth 0 (parse-hexdig (append (tree-list->string trees) rest-input)))))