Re: Absolute stack indexes

[Coroutines <coroutines@...>]

On Wed, Mar 5, 2014 at 9:05 PM, Rena <hyperhacker@gmail.com> wrote:
> Am I correct in understanding that this macro:
>
> #define LUA_ABS_INDEX(L, i) ((i) > 0 || (i) <= LUA_REGISTRYINDEX ? (i) : \
>     lua_gettop(L) + (i) + 1)
>
> will turn a negative stack index into a positive one, which will continue to
> refer to the same object even after I push/pop things onto the stack (as
> long as I don't remove that object)? If not, how can I achieve this?
>
> Am I also correct in that this functionality is not exposed in the Lua API,
> or has that been changed (or was never true to begin with)?
>
> --
> Sent from my Game Boy.


I think you want this one?  It's there in 5.2:
http://www.lua.org/manual/5.2/manual.html#lua_absindex