Hey,

I've noticed a strange behavior in 2.0.0 with nested namespaces, that used to work in 1.4.x.

It seems that using /:foo placeholder is only possible up to the first level of nesting for namespace paths.

I have created a minimal example showcasing this issue at: https://github.com/foxxx0/sinatra-2.0-namespace-nesting-issue

which boils down to:

# nesting namespaces seems to work just fine...
namespace '/working' do
  namespace '/:id' do
    # this works just fine
    get { params.inspect }
  end
end

# ... until it doesn't
namespace '/broken' do
  namespace '/foo' do
    namespace '/:id' do
      # for some reason this triggers Sinatra::NotFound, resulting in a 404
      get { params.inspect }
    end
  end
end

I was not able to find anything related in the 2.0.0 changelog, so I'm not sure if this intended behavior or a bug.

Cheers,
Thore