python / python/cpython

readline history, vi-editingmode and ANSI color codes bug

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3.9 (EOL) stdlib type-bug
Dominant language
Python
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Description

BPO 42626
Nosy @akulakov, @nijoakim
Files
  • readline-example.py: Minimal program to reproduce the bug
  • readline-example.py: Remove mistake in example
  • 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 2020-12-12.17:51:50.534>
    labels = ['type-bug', 'library', '3.9']
    title = 'readline history, vi-editingmode and ANSI color codes bug'
    updated_at = <Date 2021-07-30.09:29:04.390>
    user = 'https://github.com/nijoakim'
    

    bugs.python.org fields:

    activity = <Date 2021-07-30.09:29:04.390>
    actor = 'nijoakim'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['Library (Lib)']
    creation = <Date 2020-12-12.17:51:50.534>
    creator = 'nijoakim'
    dependencies = []
    files = ['49673', '50190']
    hgrepos = []
    issue_num = 42626
    keywords = []
    message_count = 7.0
    messages = ['382917', '397626', '398488', '398498', '398499', '398523', '398530']
    nosy_count = 2.0
    nosy_names = ['andrei.avk', 'nijoakim']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'behavior'
    url = 'https://bugs.python.org/issue42626'
    versions = ['Python 3.9']
    

    Contributor guide

    Open the contributing guide

    First steps

    1. Read the whole issue, then the project's contributing guide.
    2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
    3. Fork the repository and make your change on a branch.
    4. Open a pull request that references the issue number.

    Research direction

    Start by running the attached readline-example.py reproducer files, especially the corrected second version, and observe the interaction between history, vi editing mode, and ANSI color codes. Done means the reported behavior is understood and no longer reproduces, but the payload does not identify a target source file or expected result.

    Written by the indexing model from the issue text.

    Assessment

    Tech stack
    python
    Domain
    cli
    Issue type
    Bug
    Difficulty
    4/5
    Estimated time
    3-5 days
    Activity status
    Stale
    Clarity
    Needs clarification
    Newbie friendliness
    25/100

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