Ruby在某个地方有跨平台EOL的常量吗？

I need to format a String that ends with a newline. I'd just add a "\n", but I want this to work on Windows too. Many languages have a constant that provides the appropriate CR/LF/CRLF sequence according to the platform, but I can't seem to find anything in Ruby. Does it exist?I need to format a String that ends with a newl