Relevant code from the `email` module. Python 2.7: https://hg.python.org/releasing/2.7.9/file/tip/Lib/email/message.py#l296 https://hg.python.org/releasing/2.7

Relevant code from the `email` module. Python 2.7: https://hg.python.org/releasing/2.7.9/file/tip/Lib/email/message.py#l296 https://hg.python.org/releasing/2.7.9/file/tip/Lib/email/mes... Python 3.4: https://hg.python.org/releasing/3.4/file/tip/Lib/email/message.py#l388 https://hg.python.org/releasing/3.4/file/tip/Lib/email/messa... Ouch.