texmath-0.13.1.2: test/writer/tex/msupBsize3.test

<<< native
[ ESuper (ESymbol Op "\8747") (ENumber "1")
, ESymbol Bin "+"
, ESuper
    (EFraction NormalFrac (EIdentifier "x") (EIdentifier "y"))
    (EIdentifier "a")
, ESymbol Bin "+"
, ESuper
    (EFraction NormalFrac (EIdentifier "x") (EIdentifier "y"))
    (ENumber "1")
, ESymbol Bin "+"
, ESuper (ESymbol Op "\8747") (EIdentifier "a")
, ESymbol Bin "+"
, ESuper (ESymbol Op "\8747") (EIdentifier "a")
]
>>> tex
\int^{1} + \frac{x}{y}^{a} + \frac{x}{y}^{1} + \int^{a} + \int^{a}