[issue20747] Charset.header_encode in email.charset doesn't take a maxlinelen argument and has inconsistent behavior with different encodings

[R. David Murray]

R. David Murray added the comment:

Well, we have to make base64mime.header_encode also handle a None value...so perhaps instead we should just use 10000, which is what the Header wrapping code in python3 does.

Python3's Header doesn't have this bug.

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<http://bugs.python.org/issue20747>
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