But, in the very last days I stumbled upon Wren.
It’s a young language, but it sounds quite promising.
The syntax is quite compact, juicy and expressive (although I miss the ending semi-color). It natively supports concurrence and generators. The embedding API is simple but essential. Apparently, it’s performances beats Lua up, too.
And it’s (very) actively developed.
To be honest, the language is certainly not production ready since it lacks (among the other things) of a debug/trace API facility. But my engine is, primarily, developed to have fun and experiment… so, why don’t give to this sugar-coated little bird a try?
( I honestly think I surely will! )