Re: Converting setfenv getfenv to Lua 5.2

[Finn Wilcox <finnw@...>]

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On 30/11/2013 17:15, Andrew Starks wrote:
> _ENV is the first upvalue of every scope ...

This is not true.  Not every function has an _ENV, and when it is
present it is not always the first upvalue.

For example in this function:

local s = "Hello, world"
local function f()
  local s1 = s
  print(s1)
end

upvalue #1 is s and upvalue #2 is _ENV.


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