Consistently wrap UntrustedRegexp patterns in () for RE2
What does this MR do?
This is a fix for a regression reported in #63115 (closed) / https://sentry.gitlab.net/gitlab/devgitlaborg/issues/795304/
Because of a difference in how RE2 and Ruby return matches from patterns with match groups, we optionally wrapped patterns in ()
if none were present. However this is insufficient since we started using actual match data instead of just a simple match-presence check in !27925 (merged).
The fix here removes the check for an existing match group, and instead opts directly in to the existing behavior for patterns without any match group. Specs are added to cover the cases that had been throwing the errors picked up in Sentry.
Does this MR meet the acceptance criteria?
Conformity
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Changelog entry -
Documentation created/updated or follow-up review issue created -
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Separation of EE specific content
Performance and testing
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Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process. -
Tested in all supported browsers
Security
If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:
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Label as security and @ mention @gitlab-com/gl-security/appsec
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The MR includes necessary changes to maintain consistency between UI, API, email, or other methods -
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