--- parse tree ---
[ Comment
, SoftBreak
, Code
    "typ/text/features-02.typ"
    ( line 2 , column 2 )
    (Set
       (Ident (Identifier "text"))
       [ KeyValArg (Identifier "font") (Literal (String "IBM Plex Serif"))
       ])
, SoftBreak
, Text "a"
, Space
, Text "vs"
, Space
, Code
    "typ/text/features-02.typ"
    ( line 3 , column 7 )
    (FuncCall
       (Ident (Identifier "text"))
       [ KeyValArg (Identifier "alternates") (Literal (Boolean True))
       , BlockArg [ Text "a" ]
       ])
, Space
, HardBreak
, Text "\223"
, Space
, Text "vs"
, Space
, Code
    "typ/text/features-02.typ"
    ( line 4 , column 7 )
    (FuncCall
       (Ident (Identifier "text"))
       [ KeyValArg (Identifier "stylistic-set") (Literal (Int 5))
       , BlockArg [ Text "\223" ]
       ])
, ParBreak
]
--- evaluated ---
document(body: { text(body: [
]), 
                 text(body: [
a vs ], 
                      font: "IBM Plex Serif"), 
                 text(alternates: true, 
                      body: text(body: [a], 
                                 font: "IBM Plex Serif"), 
                      font: "IBM Plex Serif"), 
                 text(body: [ ], 
                      font: "IBM Plex Serif"), 
                 linebreak(), 
                 text(body: [ß vs ], 
                      font: "IBM Plex Serif"), 
                 text(body: text(body: [ß], 
                                 font: "IBM Plex Serif"), 
                      font: "IBM Plex Serif", 
                      stylistic-set: 5), 
                 parbreak() })
