You mention OCaml, so you probably are aware, but others may not be: there is an `utop` project, which does exactly this for OCaml REPL. It looks like this:

You mention OCaml, so you probably are aware, but others may not be: there is an `utop` project, which does exactly this for OCaml REPL. It looks like this: ─( 16:36:52 )─< command 0 >───────────────────────{ counter: 0 }─ utop # ┌───┬────────────┬─────┬───────────┬──────────────┬───────┬─────┐ │Arg│Arith_status│Array│ArrayLabels│Assert_failure│Big_int│Bigar│ └───┴────────────┴─────┴───────────┴──────────────┴───────┴─────┘ and supports syntax highlighting and autocompletion, among other features. Similar to bpython in Python-land. Link: https://opam.ocaml.org/blog/about-utop/ https://opam.ocaml.org/blog/about-utop/