texmath-0.12.5: test/writer/tex/stretchVert2.test

<<< native
[ EDelimited
    "|"
    ""
    [ Right (EIdentifier "H")
    , Left "|"
    , Right (ESymbol Bin "+")
    , Right
        (EDelimited
           "\10216"
           "\10217"
           [ Right (EIdentifier "H")
           , Right (ESymbol Rel "\8739")
           , Right (EIdentifier "H")
           ])
    ]
]
>>> tex
\left| H \middle| + \left\langle H \mid H \right\rangle \right.