In Vim, what is the simplest way to join all lines in a file into a single line?

Question

I want to join all lines in a file into a single line. What is the simplest way of doing this? I\'ve had poor luck trying to use substitution (\\r\\n or

Answer 1

Cryptic way:

qqqqqJ@qq@q

(the first three q's clear the q register, the qqJ@qq records a macro to the q register that performs a Join, then calls q, and the last @q runs it.