---input---
'symbol
'a'
'\u1234'
'\n'

---tokens---
"'symbol"     Text.Symbol
'\n'          Text

"'a'"         Literal.String.Char
'\n'          Text

"'\\u1234'"   Literal.String.Char
'\n'          Text

"'\\n'"       Literal.String.Char
'\n'          Text
