Disambiguation between
Theorem:
(defthm fail-dot-when-match-alt-rest (implies (and (tree-list-match-repetition-p trees (*_ (!_ (/_ (*_ *c-wsp*) "/" (*_ *c-wsp*) *concatenation*))) *grammar*) (tree-list-terminatedp trees) (mv-nth 0 (parse-ichar #\. rest-input))) (mv-nth 0 (parse-ichar #\. (append (tree-list->string trees) rest-input)))))