---input---
'a' 'b' f'{x}' '{c}' f'str<{y:^4}>' 'd' 'e'

---tokens---
"'"           Literal.String.Single
'a'           Literal.String.Single
"'"           Literal.String.Single
' '           Text
"'"           Literal.String.Single
'b'           Literal.String.Single
"'"           Literal.String.Single
' '           Text
'f'           Literal.String.Affix
"'"           Literal.String.Single
'{'           Literal.String.Interpol
'x'           Name
'}'           Literal.String.Interpol
"'"           Literal.String.Single
' '           Text
"'"           Literal.String.Single
'{c}'         Literal.String.Interpol
"'"           Literal.String.Single
' '           Text
'f'           Literal.String.Affix
"'"           Literal.String.Single
'str<'        Literal.String.Single
'{'           Literal.String.Interpol
'y'           Name
':'           Literal.String.Interpol
'^4'          Literal.String.Single
'}'           Literal.String.Interpol
'>'           Literal.String.Single
"'"           Literal.String.Single
' '           Text
"'"           Literal.String.Single
'd'           Literal.String.Single
"'"           Literal.String.Single
' '           Text
"'"           Literal.String.Single
'e'           Literal.String.Single
"'"           Literal.String.Single
'\n'          Text.Whitespace