Global declarations override local declarations

[bsuth]

Global declarations should directly mutate _G. Currently, the compiled code simply adds or remove the local keyword, which is not sufficient as may simply be reassigning local variables:

local a = 1
global a = 2
print(a) -- 2, should be 1 since local scope should be favored
print(_G.a) -- nil

local function test() {
  return 2
}

global function test() {
  return 1
}

print(test()) -- 1
print(_G.test) -- nil

[bsuth]

fixed by https://github.com/erde-lang/erde/commit/2daff444d095c8a113f9803b524455be4462c45b