Developed a targeted feature for the go-gitea/gitea repository, enabling users to copy just the filename from a pull request diff view. This work involved backend development in Go to implement the supporting function, as well as frontend enhancements using Go Template to add a dedicated button in the diff viewer interface. The feature also included internationalization support by introducing a new locale string, ensuring usability across different languages. By focusing on both backend logic and user interface improvements, the developer addressed a specific workflow need without introducing new bugs, demonstrating a balanced approach to feature delivery and code maintainability.