Worked on the swiftlang/swift-foundation repository to deliver a locale-aware string comparison feature for non-Darwin platforms, focusing on internationalization and robust string manipulation in Swift. The implementation introduced ICU locale support behind a conditional compilation flag, allowing for safe and configurable deployment across diverse environments. Expanded test coverage ensured that locale-specific scenarios were validated, reducing the risk of regressions and improving reliability for cross-platform applications. Addressed pull request feedback to enhance code maintainability, clarity, and documentation. The work demonstrated a methodical approach to feature rollout, emphasizing thorough testing and configurability while leveraging Swift and internationalization best practices.