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GeezerVison is showing github.com — fix(match_regex_list): handle empty string patterns without IndexError by hiro-nikaitou · Pull Request #6802 · getsentry/sentry-python

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@hiro-nikaitou

@hiro-nikaitou hiro-nikaitou commented Jul 13, 2026

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An empty string pattern in the regex list causes an IndexError: string index out of range when item_matcher[-1] is accessed. This is reachable through integrations like Celery (CeleryIntegration.exclude_beat_tasks) when users accidentally configure an empty pattern.

Skip empty string patterns in the loop to prevent the crash. A pattern with no characters is a no-op anyway.

Closes #6504

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@hiro-nikaitou
fix(match_regex_list): handle empty string patterns without IndexError
1ec1ee5 
An empty string pattern in the regex list causes IndexError when
accessing item_matcher[-1]. Skip empty string patterns in the
loop to prevent the crash.

Closes getsentry#6504
@hiro-nikaitou
hiro-nikaitou requested a review from a team as a code owner July 13, 2026 01:31
@alexander-alderman-webb

alexander-alderman-webb commented Jul 28, 2026

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Closing in favor of #6896
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@alexander-alderman-webb alexander-alderman-webb closed this Jul 28, 2026
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match_regex_list raises IndexError when a pattern list contains an empty string

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@hiro-nikaitou @alexander-alderman-webb
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