在Ruby CSV中，如何将空白（而不是“”）写入文件？

header %w[first second third]

data = [\"column one\",,\"column three\"]

CSV.open(\"myfile.csv\",\"w\") do |csv|
  csv << header
  csv << data
end

data = [\"column one\",nil,\"column three\"]

first,second,third
column one,,column three

[nil, nil]

quote_empty

false