The p. # 7 in the section « 10.1 Module units and purviews» says if it
(7.1.2) — is a namespace-definition with external linkage,
it is attached to the global module.
 
So if you have
 
export module A;
namespace N1
{
    int x;
}
 
or
 
export module A;
export namespace N1
{
    int x;
}
 
when is the namespace definition N1 attached to the global module (because it has external linkage) or to the purview of the module A?
 
 
 
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