Note that at least Adobe has started to put significant amounts of Lua into their user facing applications, as the glue on top of C++ components. Outside of th

Note that at least Adobe has started to put significant amounts of Lua into their user facing applications, as the glue on top of C++ components. Outside of the lack of bindings to proper UI frameworks, I couldn't say why you shouldn't write e.g. Word in a higher level language than C++. You might have to be careful with memory usage in some components, maybe even write those in native code, but for the vast majority of interactions something higher level should work, shouldn't it? After all you can implement something akin to Word in JS + HTML (Google Docs).