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email.utils.encode_rfc2231(string, None, None) returns broken value #85014
Description
| BPO | 40837 |
|---|---|
| Nosy | @warsaw, @orsenthil, @bitdancer, @maxking, @spaceone |
| PRs |
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 = None
created_at = <Date 2020-06-01.02:17:05.810>
labels = ['type-bug', 'library', 'expert-email', '3.10']
title = 'email.utils.encode_rfc2231(string, None, None) returns broken value'
updated_at = <Date 2020-06-05.04:08:13.869>
user = 'https://github.com/spaceone'bugs.python.org fields:
activity = <Date 2020-06-05.04:08:13.869>
actor = 'xtreak'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)', 'email']
creation = <Date 2020-06-01.02:17:05.810>
creator = 'spaceone'
dependencies = []
files = []
hgrepos = []
issue_num = 40837
keywords = []
message_count = 2.0
messages = ['370526', '370670']
nosy_count = 5.0
nosy_names = ['barry', 'orsenthil', 'r.david.murray', 'maxking', 'spaceone']
pr_nums = ['20564']
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue40837'
versions = ['Python 3.10']
Activity
spaceone commentedon Jun 1, 2020
encode_rfc2231()must not change the returned value if no transformation of the input was done.This is also mentioned in the docstring of that function.
Actual behavior:
encode_rfc2231('foo bar', None, None)
'foo%20bar'
Expected behavior:
encode_rfc2231('foo bar', None, None)
'foo bar'
orsenthil commentedon Jun 3, 2020
This will be a breaking change to the clients relying on current broken behavior, setting the fix version to 3.10 (current active).
spaceone commentedon Jun 3, 2026
NEWSentry written.CLA is signed.
→ PR #20564 is ready to go.