[luser001]

I would make a distinction between a CLI (to be used by ordinary users of the program) and a scripting interface (to be used to "extend" the program, to be used by power users and/or other programmers).

And I would further submit that the same language may not be the right choice for both tasks.

Tcl leans further towards being a pleasant CLI interface language, while AFAIK Lua leans further towards being a pleasant plugin development language.

IMHO.

[bch]

tclsh is a REPL (Read/Eval/Print Loop) coded against libtcl. libtcl is _easily_ integrated into any C (C++) development project. tclsh is but one.