Developed a robust solution for safe path handling in the onekey-sec/unblob repository, focusing on ExtFS extraction workflows. Built the ExtFSExtractor class in Python to securely manage output paths containing metacharacters, ensuring debugfs commands are properly quoted and escaped to prevent parsing errors. Enhanced backend development by updating and expanding the test suite, particularly targeting scenarios with double quotes and edge cases in output directory names. Delivered a targeted fix to maintain compatibility with existing extraction flows while improving reliability. The work demonstrated careful attention to secure file handling, comprehensive testing, and seamless integration within the project’s established Python backend architecture.