During November 2024, Benoit Grossot focused on backend development in the red/red repository, addressing a nuanced bug in file extension handling. He implemented a targeted fix in Rebol that corrected the removal of file extensions from filenames lacking directory paths, ensuring consistent behavior across various input forms. By refining the extension parsing logic, Benoit reduced edge-case errors in file utilities and improved reliability for downstream build and deployment tooling. His work demonstrated precise debugging and a disciplined, minimal patch approach, resulting in an auditable change that enhanced the robustness of file-related operations within the Rebol backend codebase.