--- parse tree ---
[ Code
    "test/typ/math/unbalanced-00.typ"
    ( line 1 , column 2 )
    (Let
       (BasicBind (Just (Identifier "test")))
       (FuncExpr
          [ NormalParam (Identifier "x") , NormalParam (Identifier "y") ]
          (Block
             (CodeBlock
                [ If
                    [ ( Equals (Ident (Identifier "x")) (Ident (Identifier "y"))
                      , Block (Content [ Text "\9989" ])
                      )
                    , ( Literal (Boolean True)
                      , Block
                          (Content
                             [ Text "\10060"
                             , Text "("
                             , Code
                                 "test/typ/math/unbalanced-00.typ"
                                 ( line 1 , column 47 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "x")) ])
                             , Space
                             , Text "/"
                             , Text "="
                             , Space
                             , Code
                                 "test/typ/math/unbalanced-00.typ"
                                 ( line 1 , column 59 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "y")) ])
                             , Text ")"
                             ])
                      )
                    ]
                ]))))
, SoftBreak
, Equation
    True
    [ MFrac
        (Text "1")
        (MGroup
           (Just "(")
           Nothing
           [ Text "2" , MGroup (Just "(") (Just ")") [ Text "x" ] ])
    ]
, SoftBreak
, Equation
    True
    [ MAttach
        (Just
           (MGroup
              (Just "(")
              Nothing
              [ Text "2"
              , Text "y"
              , MGroup (Just "(") (Just ")") [ Text "x" ]
              , MGroup (Just "(") (Just ")") []
              ]))
        Nothing
        (Text "1")
    ]
, SoftBreak
, Equation
    True
    [ MFrac
        (Text "1")
        (MGroup
           (Just "(")
           Nothing
           [ Text "2"
           , Text "y"
           , MGroup (Just "(") (Just ")") [ Text "x" ]
           , MGroup
               (Just "(")
               (Just ")")
               [ MGroup
                   Nothing
                   Nothing
                   [ Text "2" , MGroup (Just "(") (Just ")") [ Text "3" ] ]
               ]
           ])
    ]
, ParBreak
]
--- evaluated ---
document(body: { text(body: [
]), 
                 math.equation(block: true, 
                               body: math.frac(denom: { text(body: [(]), 
                                                        text(body: [2]), 
                                                        math.lr(body: ({ [(], 
                                                                         text(body: [x]), 
                                                                         [)] })) }, 
                                               num: text(body: [1])), 
                               numbering: none), 
                 text(body: [
]), 
                 math.equation(block: true, 
                               body: math.attach(b: { text(body: [(]), 
                                                      text(body: [2]), 
                                                      text(body: [y]), 
                                                      math.lr(body: ({ [(], 
                                                                       text(body: [x]), 
                                                                       [)] })), 
                                                      math.lr(body: ({ [(], 
                                                                       [)] })) }, 
                                                 base: text(body: [1]), 
                                                 t: none), 
                               numbering: none), 
                 text(body: [
]), 
                 math.equation(block: true, 
                               body: math.frac(denom: { text(body: [(]), 
                                                        text(body: [2]), 
                                                        text(body: [y]), 
                                                        math.lr(body: ({ [(], 
                                                                         text(body: [x]), 
                                                                         [)] })), 
                                                        math.lr(body: ({ [(], 
                                                                         text(body: [2]), 
                                                                         math.lr(body: ({ [(], 
                                                                                          text(body: [3]), 
                                                                                          [)] })), 
                                                                         [)] })) }, 
                                               num: text(body: [1])), 
                               numbering: none), 
                 parbreak() })