#!/usr/bin/ruby

def ttyin
  tty = open("/dev/tty", "r")
  if ( (s = tty.gets) == nil || s[0,1] == "q" )
    exit
  else
    return s[0,1]
  end
end

STDOUT.print "swap nl with space (y/n)? "
ans = ttyin
if (ans == "y" || ans == "Y")
  while (s = gets)
    print s.chomp, " "
  end
  print "\n"
else
  while (s = gets)
    puts
  end
end