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> > Moreover,
> > a modified 'load' function forces everyone to live with its magic.
> Not necessarily; Fabio's original loader did this but loader5
> restricted the magic to the users of module().

Maybe I am missing something, but I got the impression that, with
loader5 (as posted to the list), I get an empty environment if I do not
call 'module'.

  local function loader(name, modpath)
    local mod, env = {}, {}
   env.module = function (name)  ...   -- not called
   local ret = assert(load(source, modpath, 'bt', env))(name)

Moreover, it seems that loader5 has some other drawbacks. (It needs to
read the whole module as a string; all accesses to globals go all the
time through function calls.)

-- Roberto