During January 2025, Sin Prajjwal developed a new copy command and clipboard support for the IRB console in the ruby/ruby repository. This feature enables users to copy IRB command output directly to the system clipboard, with cross-platform detection for tools like pbcopy and xclip. Sin focused on robust error handling to ensure IRB sessions remain stable even if clipboard utilities are missing or fail. The implementation also enhanced the color printer, allowing optional disabling of colorization to preserve output fidelity. Sin utilized Ruby, CLI development, and system integration skills to streamline developer workflows and improve cross-platform usability within IRB.