Termdebug is a set of utilities for recording and replaying the input and output of terminal programs. Its main goal is to aid in developing and debugging terminal programs. Other programs such as termrec/termplay, nethack-recorder/player, and script/scriptreplay only record the output. However, when debugging an interactive terminal program, the input is often as important as the output.
Release Notes: A visual comparison mode was added, which provides a comparison of what the user sees, rather than a byte-by-byte comparison of the output.