def unquoted_body(to_charset = 'utf-8')
from_charset = sub_header("content-type", "charset")
case (content_transfer_encoding || "7bit").downcase
when "quoted-printable"
if !from_charset.blank? && from_charset.downcase == 'us-ascii'
from_charset = 'iso-8859-1'
end
Unquoter.unquote_quoted_printable_and_convert_to(quoted_body,
to_charset, from_charset, true)
when "base64"
Unquoter.unquote_base64_and_convert_to(quoted_body, to_charset,
from_charset)
when "7bit", "8bit"
Unquoter.convert_to(quoted_body, to_charset, from_charset)
when "binary"
quoted_body
else
quoted_body
end
end