HOWTO: Inter-plugin communication

[xoft]

No, it cannot, mainly because functions in Lua are really closures - they take with them the local values of their containing functions and are able to modify those; this cannot be safely ported to another Lua state structure. Consider the following example:

function FnOuter(ParamOuter)
  local VarOuter = 10;
  local FnInner = function(ParamInner)
    local VarInner = VarOuter + 1;  -- It can read FnOuter's local variables
    VarOuter = VarOuter * 3;  -- It can modify them
    local VarInner2 = ParamOuter + 1;  -- It can even read FnOuter's parameters
  end
  SomeOtherFunction(FnInner);  -- Perfeclt valid Lua code, SomeOtherFunction() can call FnInner however it wants
end