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GeezerVison is showing github.com — fix: handle empty string in match_regex_list to prevent IndexError by wahajahmed010 · Pull Request #6509 · getsentry/sentry-python

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@wahajahmed010

@wahajahmed010 wahajahmed010 commented Jun 6, 2026

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Description

When match_regex_list receives a pattern list containing an empty string, item_matcher[-1] raises IndexError because empty strings have no characters. This is reachable from the Celery integration when CeleryIntegration.exclude_beat_tasks contains an empty string.

Fix: skip empty strings in the iteration loop before the [-1] access.

Issues

  • resolves: match_regex_list raises IndexError when a pattern list contains an empty string #6504

Reminders

  • Added tests to validate changes
  • Conventional commit format in PR title

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@wahajahmed010
fix: handle empty string in match_regex_list to prevent IndexError
b710e13 
When match_regex_list receives a pattern list containing an empty string,
item_matcher[-1] raises IndexError because empty strings have no characters.
This is reachable from the Celery integration when CeleryIntegration.exclude_beat_tasks
contains an empty string.

Fix: skip empty strings in the iteration loop before the [-1] access.

Fixes: getsentry#6504
Signed-off-by: Wahaj Ahmed <[email protected]>
@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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@wahajahmed010 @alexander-alderman-webb
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