""
"foo"
"\x12"
"3"
"\xff""f"
"foo\
bar"
"a猫🍌"
u8"a猫🍌"
u"a猫🍌"
U"a猫🍌"
L"a猫🍌"
----------------------------------------------------
[
["string", "\"\""],
["string", "\"foo\""],
["string", "\"\\x12\""],
["string", "\"3\""],
["string", "\"\\xff\""], ["string", "\"f\""],
["string", "\"foo\\\r\nbar\""],
["string", "\"a猫🍌\""],
"\r\nu8", ["string", "\"a猫🍌\""],
"\r\nu", ["string", "\"a猫🍌\""],
"\r\nU", ["string", "\"a猫🍌\""],
"\r\nL", ["string", "\"a猫🍌\""]
]