I've heard about several in-house forks of Lua, but usually, they happened because companies settled on a specific version (e.g Lua 4.0) and imported it into th

I've heard about several in-house forks of Lua, but usually, they happened because companies settled on a specific version (e.g Lua 4.0) and imported it into their project. Lua's small enough that maintaining a private fork of the whole language is reasonable, though. The only public fork of the whole language I've heard of is Metalua, though.