re.IGNORECASE strips combining character from lower case of LATIN CAPITAL LETTER I WITH DOT ABOVE

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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

Start with the linked casing.py reproduction and run it against the current Python checkout to confirm how re.IGNORECASE handles LATIN CAPITAL LETTER I WITH DOT ABOVE. Trace the relevant regular-expression case-folding behavior and determine the expected preservation of the combining character; the issue is resolved when the reported mismatch is corrected and covered by a regression test.

Written by the indexing model from the issue text.

Description

stdlib topic-regex
BPO 31193
Nosy @tomviner
Files
  • casing.py
    		•

    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 2017-08-13.13:43:47.172>
labels = ['library']
title = 're.IGNORECASE strips combining character from lower case of LATIN CAPITAL LETTER I WITH DOT ABOVE'
updated_at = <Date 2017-08-14.18:03:49.939>
user = 'https://bugs.python.org/DavidMacIver'

    bugs.python.org fields:

    activity = <Date 2017-08-14.18:03:49.939>
actor = 'David MacIver'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2017-08-13.13:43:47.172>
creator = 'David MacIver'
dependencies = []
files = ['47080']
hgrepos = []
issue_num = 31193
keywords = []
message_count = 3.0
messages = ['300219', '300257', '300258']
nosy_count = 3.0
nosy_names = ['mrabarnett', 'David MacIver', 'tomviner']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue31193'
versions = ['Python 3.6']

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