string("");
string("WAVE🌊");
string("\\\'\"\t\n\r");
string("'\'\u{27}");
string("☃\u{2603}\u{002603}");
// Multiline: empty
string("""
""");
// Multiline: escapes
string("""
Break up double quote sequences: ""\""
Other escapes work: \\\'\"\t\n\r\u{2603}
""");
// Multiline: indent behavior
string("""
Trailing indent
determines dedent
behavior.
""");
// Multiline: empty lines
string("""
Empty leading and trailing lines are retained
""")