subsup.test

<<< tex
 x^a_b\quad
 x_b^a\quad
 \min_A\quad
 \max_B\quad
 \det_C\quad
 \Pr_A\quad
 \gcd_A\quad
 \dot{u}^2\quad
 \overline{u}_\varepsilon\quad
 \underline{u}^a_b\quad
 \overbrace{a+b}^{\text{term}}\quad
 \overbracket{a+b}^{c}\quad
 \underbrace{a+b}_{c}\quad
 \underbracket{a+b}_{c}\quad
 ^He3\quad
 _xA\quad
 _x^3

>>> native
[ ESubsup (EIdentifier "x") (EIdentifier "b") (EIdentifier "a")
, ESpace (1 % 1)
, ESubsup (EIdentifier "x") (EIdentifier "b") (EIdentifier "a")
, ESpace (1 % 1)
, EUnder True (EMathOperator "min") (EIdentifier "A")
, ESpace (1 % 1)
, EUnder True (EMathOperator "max") (EIdentifier "B")
, ESpace (1 % 1)
, EUnder True (EMathOperator "det") (EIdentifier "C")
, ESpace (1 % 1)
, EUnder True (EMathOperator "Pr") (EIdentifier "A")
, ESpace (1 % 1)
, EUnder True (EMathOperator "gcd") (EIdentifier "A")
, ESpace (1 % 1)
, ESuper
    (EOver False (EIdentifier "u") (ESymbol Accent "\775"))
    (ENumber "2")
, ESpace (1 % 1)
, ESub
    (EOver False (EIdentifier "u") (ESymbol TOver "\175"))
    (EIdentifier "\949")
, ESpace (1 % 1)
, ESubsup
    (EUnder False (EIdentifier "u") (ESymbol TUnder "_"))
    (EIdentifier "b")
    (EIdentifier "a")
, ESpace (1 % 1)
, EOver
    False
    (EOver
       False
       (EGrouped [ EIdentifier "a" , ESymbol Bin "+" , EIdentifier "b" ])
       (ESymbol TOver "\9182"))
    (EText TextNormal "term")
, ESpace (1 % 1)
, EOver
    False
    (EOver
       False
       (EGrouped [ EIdentifier "a" , ESymbol Bin "+" , EIdentifier "b" ])
       (ESymbol TOver "\9140"))
    (EIdentifier "c")
, ESpace (1 % 1)
, EUnder
    False
    (EUnder
       False
       (EGrouped [ EIdentifier "a" , ESymbol Bin "+" , EIdentifier "b" ])
       (ESymbol TUnder "\9183"))
    (EIdentifier "c")
, ESpace (1 % 1)
, EUnder
    False
    (EUnder
       False
       (EGrouped [ EIdentifier "a" , ESymbol Bin "+" , EIdentifier "b" ])
       (ESymbol TUnder "\9141"))
    (EIdentifier "c")
, ESuper (ESpace (1 % 1)) (EIdentifier "H")
, EIdentifier "e"
, ENumber "3"
, ESub (ESpace (1 % 1)) (EIdentifier "x")
, EIdentifier "A"
, ESubsup (ESpace (1 % 1)) (EIdentifier "x") (ENumber "3")
]