How to replace multiple newlines in a row with one newline using Ruby

Question

I have a script written in ruby. I need to remove any duplicate newlines (e.g.)

\\n
\\n
\\n

to

\\n

My current

Answer 1

Simply splitting and recombining the lines will give the desired result

>> "one\ntwo\n\nthree\n".split.join("\n")
=> "one\ntwo\nthree"

Edit: I just noticed this will replace ALL whitespace substrings with newlines, e.g.

>> "one    two three\n".split.join("\n")
=> "one\ntwo\nthree"

First check that this is what you want!