Re: recursively traverse globals table from C API

[Rici Lake <lua@...>]

On 19-Jan-07, at 10:29 PM, Raymond Jacobs wrote:

> This is now slightly off-topic, but
>
> I don't suppose there is a way to identify 'system' tables, such as
> os,_G,math, and etc.?

Nope. There's no such thing as a system table, really: the Lua core 
doesn't define any; they're all inserted by the embedding application.

If you're trying to maintain some sort of additional environment, I'd 
suggest you use an environment table; you can give it {__index = _G} as 
a metatable which will make the initial globals table the fallback. 
lua_next ignores metatables, so it will only iterate over keys that are 
actually in the table you're iterating.