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# encoding: utf-8
# frozen_string_literal: true
require 'mail/fields/common_field'
module Mail
# Provides access to a structured header field
#
# ===Per RFC 2822:
# 2.2.2. Structured Header Field Bodies
#
# Some field bodies in this standard have specific syntactical
# structure more restrictive than the unstructured field bodies
# described above. These are referred to as "structured" field bodies.
# Structured field bodies are sequences of specific lexical tokens as
# described in sections 3 and 4 of this standard. Many of these tokens
# are allowed (according to their syntax) to be introduced or end with
# comments (as described in section 3.2.3) as well as the space (SP,
# ASCII value 32) and horizontal tab (HTAB, ASCII value 9) characters
# (together known as the white space characters, WSP), and those WSP
# characters are subject to header "folding" and "unfolding" as
# described in section 2.2.3. Semantic analysis of structured field
# bodies is given along with their syntax.
class StructuredField < CommonField #:nodoc:
end
end
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