Does LUA_ENVIRONINDEX make LUA_GLOBALSINDEX obsolete?

[Tim Maxwell <timmaxw@...>]

Hi,

The environment system is a powerful new feature for Lua. It seems to  
me that the globals table accessible through LUA_GLOBALSINDEX is just  
a special case of the environment table - unless I am mistaken,  
LUA_GLOBALSINDEX simply refers to the environment table that was  
created for the first Lua state. If I'm wrong, disregard the rest of  
this message.

Perhaps LUA_GLOBALSINDEX is unnecessary. lua_getglobal and  
lua_setglobal could be redirected to access LUA_ENVIRONINDEX instead  
of LUA_GLOBALSINDEX. Most global variable access should go to the  
environment table anyway, so lua_getglobal and lua_setglobal would be  
more useful if they want to the environment table. Other functions  
that use LUA_GLOBALSINDEX should probably go to LUA_ENVIRONINDEX as  
well.

Can anybody think of a use for LUA_GLOBALSINDEX over LUA_ENVIRONINDEX?

Is there anything that this change would break?

Is LUA_GLOBALSINDEX already being retired?

Tim Maxwell