texmath-0.12.5: test/writer/eqn/embStretch1.test

<<< native
[ ESuper
    (EDelimited
       "("
       ")"
       [ Right (EFraction NormalFrac (ENumber "2") (EIdentifier "x")) ])
    (ESymbol Bin "-")
]
>>> eqn
{left ( 2 over x right )} sup -