I moved on to an interesting job about a year ago, and there's only so much meaningful code you can write in a day...<p>I'm still working on metalua, but there are few things which are worth being published yet. Promising works in progress include:<p>- friendlier syntax to write grammar extensions (current grammars are too verbose, AST builders are ugly and barely readable)<p>- a library of "for ... in" generators, to walk through ASTs in a nicer, more lua-like way than with the current metalua.walk library. This should eventually become generic enough to become an interesting XML / JSON / whatever-kind-of-tree tool<p>- integration with LuaEclipse, and generally speaking, more focus on metalua as a way to manipulate / refactor plain Lua programs, rather than as an independent language.