====== Option +quote_empty+

Specifies the boolean that determines whether an empty value is to be double-quoted.

Default value:
  CSV::DEFAULT_OPTIONS.fetch(:quote_empty) # => true

With the default +true+:
  CSV.generate_line(['"', ""]) # => "\"\"\"\",\"\"\n"

With +false+:
    CSV.generate_line(['"', ""], quote_empty: false) # => "\"\"\"\",\n"
