One final twist: you can juxtapose multiple string literals. Two or
more adjacent string literals (but not arbitrary expressions!)
separated only by whitespace will be concatenated (without intervening
whitespace) into a single string object at compile time. This makes
it possible to continue a long string on the next line without
sacrificing indentation or performance, unlike the use of the string
concatenation operator + or the continuation of the literal
itself on the next line (since leading whitespace is significant
inside all types of string literals). Note that this feature, like
all string features except triple-quoted strings, is borrowed from
Standard C.