//% keywords:
//%   line_comment: ["//"]
//
//% escapes:
//%     extended: true
//%     ask: true
//%     octal: true
//%     partial_x: true
//%     uppercase_x: true
//%     old_style_unicode: true
""
''
"foo"
'bar'
"A string with \"nested quotes\" in it"
'Another with \'nested quotes\' inside'
"Some whitespace:\n\r\t\v"
'Hex escaped bytes: \x01\x2\X03\X4'
'A string with a literal back-slash \\ in it'
"A string that has a NULL character in hex: \x00"
"Another with a NULL in octal: \00"
"A unicode right arrow can use unicode escape \u2192 or not →\?"
'Long unicode escape can represent emojis \U0001F389 but isn\'t necessary 🎉'
