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# Copyright (C) 2001-2009 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# GNU Mailman.  If not, see <http://www.gnu.org/licenses/>.

"""LLNL's custom Sendmail bounce message."""

import re
import email

acre = re.compile(r',\s*(?P<addr>\S+@[^,]+),', re.IGNORECASE)



def process(msg):
    for line in email.Iterators.body_line_iterator(msg):
        mo = acre.search(line)
        if mo:
            return [mo.group('addr')]
    return []