Disambiguation between
Theorem:
(defthm fail-alpha/digit/dash-when-match-alt-rest-comp (implies (and (tree-match-element-p tree (!_ (/_ (*_ *c-wsp*) "/" (*_ *c-wsp*) *concatenation*)) *grammar*) (tree-terminatedp tree)) (mv-nth 0 (parse-alpha/digit/dash (append (tree->string tree) rest-input)))))