Titlecase as defined in Unicode Case Mappings not followed

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
internationalization

Research direction

Review the attached test_unicode.titlecase.diff and unicodeobject.titlecase.diff files first, then locate the current implementations of str.title() and str.istitle(). Compare their behavior with the Unicode Case Mappings referenced by the issue. Done means the titlecase behavior and its tests follow those mappings, including the cases covered by the historical patches.

Written by the indexing model from the issue text.

Description

stdlib topic-unicode type-bug
BPO 6412
Nosy @malemburg, @rhettinger, @terryjreedy, @pitrou, @ezio-melotti, @bitdancer, @int-ua
Files
  • test_unicode.titlecase.diff: Patch adding a test case for istitle()
  • unicodeobject.titlecase.diff: Incomplete patch fixing title() and istitle()
  • unicodeobject.titlecase.2.diff: Patch fixing title() and istitle()
  • unicodeobject.titlecase.3.diff
    		•

    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 2009-07-03.23:14:47.639>
labels = ['type-bug', 'library']
title = 'Titlecase as defined in Unicode Case Mappings not followed'
updated_at = <Date 2017-11-08.20:08:20.093>
user = 'https://bugs.python.org/christoph'

    bugs.python.org fields:

    activity = <Date 2017-11-08.20:08:20.093>
actor = 'Serhiy Int'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2009-07-03.23:14:47.639>
creator = 'christoph'
dependencies = []
files = ['14443', '14444', '14890', '14994']
hgrepos = []
issue_num = 6412
keywords = ['patch']
message_count = 14.0
messages = ['90086', '90087', '90563', '92635', '92636', '93263', '93265', '93267', '93273', '94036', '94037', '94039', '112791', '112840']
nosy_count = 10.0
nosy_names = ['lemburg', 'rhettinger', 'terry.reedy', 'ggenellina', 'pitrou', 'senn', 'christoph', 'ezio.melotti', 'r.david.murray', 'Serhiy Int']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue6412'
versions = ['Python 2.7', 'Python 3.2', 'Python 3.3', 'Python 3.4']

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