UTF7 encoding of slash (character 47) is incorrect

[NickBarnes]

BPO	4425
Nosy	@pitrou, @vstinner

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2009-05-04.11:07:18.547>
created_at = <Date 2008-11-25.11:03:51.995>
labels = ['type-bug', 'expert-unicode']
title = 'UTF7 encoding of slash (character 47) is incorrect'
updated_at = <Date 2009-05-04.11:07:18.546>
user = 'https://bugs.python.org/NickBarnes'

bugs.python.org fields:

activity = <Date 2009-05-04.11:07:18.546>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2009-05-04.11:07:18.547>
closer = 'vstinner'
components = ['Unicode']
creation = <Date 2008-11-25.11:03:51.995>
creator = 'Nick Barnes'
dependencies = []
files = []
hgrepos = []
issue_num = 4425
keywords = []
message_count = 3.0
messages = ['76404', '76410', '87112']
nosy_count = 3.0
nosy_names = ['pitrou', 'vstinner', 'Nick Barnes']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = None
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue4425'
versions = ['Python 2.6']

[NickBarnes]

'/'.encode('utf7') returns '+AC8-'. It should return '/'. See RFC 2152.

'/'.decode('utf7') raises an exception (this is a special case of a
general problem with UTF-7 decoding, which I will report as a separate bug).

[vstinner]

Related issue: bpo-4426

[vstinner]

I think that we can merge this issue with bpo-4426.