Re: setfenv/getfenv

[Renato Maia <maia@...>]

On 12 Jan 2010, at 19:02, Leo Razoumov wrote:
> --code inside the chunk:
> local mt_saved= getmetatable(_G)

You should make '_G' point to the actual table containing the global  
variables instead of the proxy table.

> Please, note that here one cannot use __metatable trick to disable
> access to the metatable. Ability to update __index/__newindex is
> needed to setup proxy table for calling the chunk in other
> compartments.

The '__metatable' trick does not prevent you from saving a reference  
for the metatable and use it to change the '__index'/'__newindex'  
fields.


--
Renato Maia
Computer Scientist
Tecgraf/PUC-Rio
__________________________
http://www.inf.puc-rio.br/~maia/

--
Renato Maia
Computer Scientist
Tecgraf/PUC-Rio
__________________________
http://www.inf.puc-rio.br/~maia/