Comment by dhamidi

Feather, a fresh implementation of TCL: https://www.feather-lang.dev

Command languages are underrated, and being able to add a Bash-like REPL for agents and users alike is something I want to see more of.

Feather solves the "rest of the Owl" problem: agents/users get loops, conditionals, online help for free from Feather, as the embedder you only need to add application-specific commands.

Feather itself has no GC (uses the host's), no own data structures (uses the host's, e.g. JavaScript arrays for lists in the js version), and no I/O.

The core is implemented in stdlib-less C