setglobals and Lua 5.0

["paul_winwood" <paul_winwood@...>]

>The way this used to work for Lua version 4.x was I would trap the
>getglobal using a tag method and then I would redirect this to the
>zeus_function where I would test if a call to a Zeus builtin 
>function was required.

With Lua 5 globals are just another table accessed by the special 
index LUA_GLOBALSINDEX, therefore the getglobal tag method is 
redundant. You should be able to set a metatable on the globals table 
and then install __newindex or __index or __call (as required) 
metamethods. See the Metatables section of the Lua 5.0 manual for 
more info. 
I am about to release version 2 of wxLua that uses Lua 5.0 and I must 
say when you get your head around the change it is much more rational 
and consistent.