texmath-0.12.5: test/writer/tex/msupBsize2.test

<<< native
[ ESuper (EIdentifier "x") (ENumber "1")
, ESymbol Bin "+"
, ESuper (EIdentifier "x") (EIdentifier "a")
, ESymbol Bin "+"
, ESuper (EIdentifier "H") (EIdentifier "a")
, ESymbol Bin "+"
, ESuper (EIdentifier "H") (ENumber "1")
]
>>> tex
x^{1} + x^{a} + H^{a} + H^{1}