texmath-0.12.5: test/roundtrip/mtable-13.native

[ EArray
    [ AlignCenter , AlignCenter , AlignCenter ]
    [ [ [ EUnder
            False (EIdentifier "HT") (EPhantom (EText TextNormal "fail"))
        ]
      , [ ESymbol Rel "=" ]
      , [ EIdentifier "TH" ]
      ]
    ]
]