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# encoding: utf-8
# frozen_string_literal: true
require 'mail/fields/common_message_id_field'
module Mail
# = References Field
#
# The References field inherits references StructuredField and handles the References: header
# field in the email.
#
# Sending references to a mail message will instantiate a Mail::Field object that
# has a ReferencesField as its field type. This includes all Mail::CommonAddress
# module instance metods.
#
# Note that, the #message_ids method will return an array of message IDs without the
# enclosing angle brackets which per RFC are not syntactically part of the message id.
#
# Only one References field can appear in a header, though it can have multiple
# Message IDs.
#
# == Examples:
#
# mail = Mail.new
# mail.references = '<F6E2D0B4-CC35-4A91-BA4C-C7C712B10C13@test.me.dom>'
# mail.references #=> '<F6E2D0B4-CC35-4A91-BA4C-C7C712B10C13@test.me.dom>'
# mail[:references] #=> '#<Mail::Field:0x180e5e8 @field=#<Mail::ReferencesField:0x180e1c4
# mail['references'] #=> '#<Mail::Field:0x180e5e8 @field=#<Mail::ReferencesField:0x180e1c4
# mail['References'] #=> '#<Mail::Field:0x180e5e8 @field=#<Mail::ReferencesField:0x180e1c4
#
# mail[:references].message_ids #=> ['F6E2D0B4-CC35-4A91-BA4C-C7C712B10C13@test.me.dom']
class ReferencesField < CommonMessageIdField #:nodoc:
NAME = 'References'
def self.singular?
true
end
def initialize(value = nil, charset = nil)
value = value.join("\r\n\s") if value.is_a?(Array)
super value, charset
end
end
end
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