--- parse tree ---
[ Code
    "test/typ/math/matrix-alignment-01.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/matrix-alignment-01.typ"
                                 ( line 1 , column 47 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "x")) ])
                             , Space
                             , Text "/"
                             , Text "="
                             , Space
                             , Code
                                 "test/typ/math/matrix-alignment-01.typ"
                                 ( line 1 , column 59 )
                                 (FuncCall
                                    (Ident (Identifier "repr"))
                                    [ NormalArg (Ident (Identifier "y")) ])
                             , Text ")"
                             ])
                      )
                    ]
                ]))))
, SoftBreak
, Comment
, Equation
    True
    [ Code
        "test/typ/math/matrix-alignment-01.typ"
        ( line 3 , column 3 )
        (FuncCall
           (Ident (Identifier "mat"))
           [ ArrayArg
               [ [ MGroup
                     Nothing
                     Nothing
                     [ Text " a "
                     , MAlignPoint
                     , Text " a a a "
                     , MAlignPoint
                     , Text " a a"
                     ]
                 ]
               , [ MGroup
                     Nothing
                     Nothing
                     [ Text " a a "
                     , MAlignPoint
                     , Text " a a "
                     , MAlignPoint
                     , Text " a"
                     ]
                 ]
               , [ MGroup
                     Nothing
                     Nothing
                     [ Text " a a a "
                     , MAlignPoint
                     , Text " a "
                     , MAlignPoint
                     , Text " a a a"
                     ]
                 ]
               ]
           ])
    ]
, ParBreak
]
--- evaluated ---
document(body: { text(body: [
]), 
                 math.equation(block: true, 
                               body: math.mat(rows: (({ text(body: [ a ]), 
                                                        math.alignpoint(), 
                                                        text(body: [ a a a ]), 
                                                        math.alignpoint(), 
                                                        text(body: [ a a]) }), 
                                                     ({ text(body: [ a a ]), 
                                                        math.alignpoint(), 
                                                        text(body: [ a a ]), 
                                                        math.alignpoint(), 
                                                        text(body: [ a]) }), 
                                                     ({ text(body: [ a a a ]), 
                                                        math.alignpoint(), 
                                                        text(body: [ a ]), 
                                                        math.alignpoint(), 
                                                        text(body: [ a a a]) }))), 
                               numbering: none), 
                 parbreak() })