Regex Question: how do I replace a single space with a newline in VI

Question

Regex Question: how do I replace a single space with a newline in VI.

Answer 1

:%s/ /^V^M/g

note: hit ctrl-v, ctrl-m.

edit: if you really mean all single spaces, meaning spaces not followed by another space, use this:

:%s/ \{1\}/^V^M/g

and if you really meant just the first single space in the document, use this:

:%s/ /^V^M/