Lua looks like a nice language, but I've never really tried it. The Lua JITs are really impressive. Metaprogramming is a pretty widespread feature these days.

Lua looks like a nice language, but I've never really tried it. The Lua JITs are really impressive. Metaprogramming is a pretty widespread feature these days. Even Rust, for example, has both Scheme-style rewrite-rule macros, and (unstable) programmatic macros, for example.