trivial-toplevel-prompt
Trivial Toplevel Prompt is a portability library to change REPL prompt. Prompt can be set to a format control or a function accepting debug level, command number, and other REPL parameters for maximal usefulness. Supports SBCL, CCL, ECL, ABCL, CLISP, and ACL.

Repository and homepage: https://github.com/aartaka/trivial-toplevel-prompt

License: BSD

trivial repl