texmath-0.12.5: test/roundtrip/mtable-01.native

[ EArray
    [ AlignCenter ]
    [ [ [ EIdentifier "H" ] ]
    , [ [ EIdentifier "T" ] ]
    , [ [ EIdentifier "U" ] ]
    ]
, ESymbol Rel "="
, EArray
    [ AlignCenter ]
    [ [ [ EIdentifier "H" ] ]
    , [ [ EIdentifier "T" ] ]
    , [ [ EIdentifier "U" ] ]
    ]
]