---input---
f"{ chr(65) =}"

---tokens---
'f'           Literal.String.Affix
'"'           Literal.String.Double
'{'           Literal.String.Interpol
' '           Text.Whitespace
'chr'         Name.Builtin
'('           Punctuation
'65'          Literal.Number.Integer
')'           Punctuation
' '           Text.Whitespace
'=}'          Literal.String.Interpol
'"'           Literal.String.Double
'\n'          Text.Whitespace