Class TMail::MimeEncodeMulti < Object

# File rails/actionmailer/lib/action_mailer/vendor/tmail/net.rb, line 265
def exec( mail, top = true )
  mail.mime_version = '1.0' if top
  mail.set_content_type 'multipart', 'mixed'
  e = encoding(nil)
  if e and not %r\A(?:7bit|8bit|binary)\z/ === e
    raise ArgumentError,
          'using C.T.Encoding with multipart mail is not permitted'
  end
  mail.parts.each do |m|
    exec m, false if m._builtin_multipart?
  end
end