Non local variables not becoming global?

[Saptarshi Guha <saptarshi.guha@...>]

Hello,

I have a question about locals for some constructs.

Suppose I have

f1 = function(a)
local x = 1
for i=1,3 do
 y=2
end
end

f2=function(a)
 f1(a)
 print(y)
end

Then, when f2 is called, y is created in the global scope. To avoid
this i can write

local y

just below the 'local x=1' line.

Is there anyway to force chunks to create variable in the current context rather
than in global when local is not specified?
So that in the above, print(y) would display nil?

Thanks

S

(I'm using 5.1, does the _ENV (in 5.2) help in any way?)