Option quote_char¶ ↑

Specifies the character (String of length 1) used used to quote fields in both parsing and generating. This String will be transcoded into the data's Encoding before use.

Default value:

CSV::DEFAULT_OPTIONS.fetch(:quote_char) # => "\"" (double quote)

This is useful for an application that incorrectly uses ' (single-quote) to quote fields, instead of the correct " (double-quote).

Using the default (double quote):

str = CSV.generate do |csv|
  csv << ['foo', 0]
  csv << ["'bar'", 1]
  csv << ['"baz"', 2]
end
str # => "foo,0\n'bar',1\n\"\"\"baz\"\"\",2\n"
ary = CSV.parse(str)
ary # => [["foo", "0"], ["'bar'", "1"], ["\"baz\"", "2"]]

Using ' (single-quote):

quote_char = "'"
str = CSV.generate(quote_char: quote_char) do |csv|
  csv << ['foo', 0]
  csv << ["'bar'", 1]
  csv << ['"baz"', 2]
end
str # => "foo,0\n'''bar''',1\n\"baz\",2\n"
ary = CSV.parse(str, quote_char: quote_char)
ary # => [["foo", "0"], ["'bar'", "1"], ["\"baz\"", "2"]]

Raises an exception if the String length is greater than 1:

# Raises ArgumentError (:quote_char has to be nil or a single character String)
CSV.new('', quote_char: 'xx')

Raises an exception if the value is not a String:

# Raises ArgumentError (:quote_char has to be nil or a single character String)
CSV.new('', quote_char: :foo)

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