[issue18022] Inconsistency between quopri.decodestring() and email.quoprimime.decode()

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

>>> import quopri, email.quoprimime
>>> quopri.decodestring(b'==41')
b'=41'
>>> email.quoprimime.decode('==41')
'=A'

I don't see a rule about double '=' in RFC 1521-1522 or RFCs 2045-2047 and I think quopri is wrong.

Other half of this bug (encoding '=' as '==') was fixed in 9bc52706d283.

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components: Library (Lib), email
messages: 189663
nosy: Jeremy.Hylton, barry, gvanrossum, r.david.murray, serhiy.storchaka
priority: normal
severity: normal
status: open
title: Inconsistency between quopri.decodestring() and email.quoprimime.decode()
type: behavior
versions: Python 2.7, Python 3.3, Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18022>
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