Disambiguation between
Theorem:
(defthm fail-equal-slash-when-match-equal-and-rest-fail-slash (implies (and (tree-match-element-p tree (element-char-val (char-val-insensitive nil "=")) *grammar*) (mv-nth 0 (parse-ichar #\/ rest-input))) (mv-nth 0 (parse-ichar2 #\= #\/ (append (tree->string tree) rest-input)))))