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Email header with ;;;; stuffing takes very long to parse #87075

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@eriker-fsc

Description

@eriker-fsc
BPO 42909
Nosy @warsaw, @bitdancer, @akulakov, @eriker-fsc
Files
  • repro.py: Simple self-contained repro script - should take less than 1s but takes more than 30
  • 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 2021-01-12.13:13:10.953>
    labels = ['3.8', 'expert-email', '3.10', 'performance', '3.7', '3.9']
    title = 'Email header with ;;;; stuffing takes very long to parse'
    updated_at = <Date 2021-07-09.22:18:24.963>
    user = 'https://github.com/eriker-fsc'

    bugs.python.org fields:

    activity = <Date 2021-07-09.22:18:24.963>
    actor = 'andrei.avk'
    assignee = 'none'
    closed = False
    closed_date = None
    closer = None
    components = ['email']
    creation = <Date 2021-01-12.13:13:10.953>
    creator = 'eriker'
    dependencies = []
    files = ['49736']
    hgrepos = []
    issue_num = 42909
    keywords = []
    message_count = 3.0
    messages = ['384931', '384938', '397228']
    nosy_count = 4.0
    nosy_names = ['barry', 'r.david.murray', 'andrei.avk', 'eriker']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'open'
    superseder = None
    type = 'resource usage'
    url = 'https://bugs.python.org/issue42909'
    versions = ['Python 3.6', 'Python 3.7', 'Python 3.8', 'Python 3.9', 'Python 3.10']

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