Unnamed namespaces should not be nested within each other

Clean Code New rules / language support
1

Very similar to https://rules.sonarsource.com/cpp/RSPEC-3609 When you already inside an unnamed namespace, opening another unnamed namespace is redundant.

namespace { // Outer namespace begin
...
namespace { // Redundant namespace
...
} // Redundant namespae end
...
} // Outer namespace end
4

Hello @torgeir.skogen.

Thanks for this other interesting idea. I’ve raised [CPP-4026] - Jira for this purpose.