How to replace a character for a newline in Vim?

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I'm trying to replace each , in the current file by a new line: :%s/,/\n/g But it inserts what looks like a ^@ instead of an actual newline. The file is not in DOS mode or anything. What should I do? EDIT: If you are curious, like me, check the question Why is \r a newline for Vim? as well.

Use \r instead of \n.