texmath-0.12.5: test/roundtrip/munderover-10.native

[ EUnderover
    False (EIdentifier "B") (EIdentifier "under") (EIdentifier "over")
, ESymbol Rel "="
, EOver
    False
    (EUnder False (EIdentifier "B") (EIdentifier "under"))
    (EIdentifier "over")
]