Question

Creates a module.
If there is a table in package.loaded[name],
this table is the module.
Otherwise, if there is a global table t with the given name,
this table is the module.
Otherwise creates a new table t and
sets it as the value of the global name and
the value of package.loaded[name].
This function also initializes t._NAME with the given name,
t._M with the module (t itself),
and t._PACKAGE with the package name
(the full module name minus last component; see below).
Finally, module sets t as the new environment
of the current function and the new value of package.loaded[name],
so that require returns t.

If name is a compound name
(that is, one with components separated by dots),
module creates (or reuses, if they already exist)
tables for each component.
For instance, if name is a.b.c,
then module stores the module table in field c of
field b of global a.

This function may receive optional options after
the module name,
where each option is a function to be applied over the module.