Worked on enhancing the user experience and stability of command-line error handling in the fastapi/typer repository. Focused on refining the formatting of suggestion messages for NoSuchOption errors, the work aimed to improve clarity and reduce confusion for users interacting with CLI prompts. Utilized Python programming and error handling techniques to update the NoSuchOption.format_message() method, ensuring that user-facing guidance is more readable and consistent. Although no new features were introduced during this period, the targeted bug fix addressed a key usability issue, laying the foundation for more coherent and user-friendly messaging across future command-line interactions in the project.