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On 09/12/14 04:05 PM, Dirk Laurie wrote:

2014-12-09 19:43 GMT+02:00 Thiago L. <fakedme@gmail.com>:

On 09/12/14 03:46 AM, Dirk Laurie wrote:

2014-12-08 21:48 GMT+02:00 Thiago L. <fakedme@gmail.com>:

On 08/12/14 05:47 PM, Thiago L. wrote:


On 08/12/14 02:15 PM, Dirk Laurie wrote:

Do you expect the relationship
      `_ENV.string == getmetatable"".__index`
to survive?


local _ENV = {string = {}}
print(_ENV.string == getmetatable"".__index) --> false


Wait actually I'm not sure what you're asking...?

Do you want string.sub(str,i,j) and str:sub(i,j) to do the
same (as it now does) after you have assigned something
to _META.string?


I want to be able to tweak it as needed (aka if I change the string table I
wanna be able to change the string metatable to do the same as the string
table _BUT_ only inside the sandboxed environment)

So technically, considering I can _ENV.string = {}, it doesn't actually do
the same does it?

Since string is the only type that works this way, maybe just coding it
in plain Lua is readable enough.

_META = getmetatable""
_INDEX = {sub = function(s, i, j) return "nope" end}

s = "test"
print(s:sub(1,2))

do
    local string = _INDEX
   _META.__index = string
    print(s:sub(1,2),string.sub(s,1,2))
end

_META.__index = string
print(s:sub(1,2))


function f(s)
  return s:sub(1,2)
end

_META = getmetatable""
_INDEX = {sub = function(s, i, j) return "nope" end}

s = "test"
print(s:sub(1,2))

do
   local string = _INDEX
  _META.__index = string
   print(f(s)) --> prints "nope", with my proposal it would print "te"
end

_META.__index = string
print(s:sub(1,2))


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