The good Gordon Williams implemented this tiny little interpreter some time ago.
.cpp pair) to be incorporated with almost no hassle.
I took the liberty to fork the original (no longer maintained?) project on GitHub and make some minor modifications to suit my needs.
I will certainly use it anytime I need some basic but versatile scripting facility in my applications without weighting them too much.
( for any advanced and mission critical uses I will go and use Lua, instead )