texmath-0.7: tests/readers/mml/msup-04.native
[ESuper (ENumber "2") (ESuper (ENumber "3") (ENumber "4")),ESymbol Rel "=",ESuper (ENumber "2") (ESuper (ENumber "3") (ESuper (ENumber "4") (EPhantom (EIdentifier "fail"))))]
[ESuper (ENumber "2") (ESuper (ENumber "3") (ENumber "4")),ESymbol Rel "=",ESuper (ENumber "2") (ESuper (ENumber "3") (ESuper (ENumber "4") (EPhantom (EIdentifier "fail"))))]