# File lib/rspec/core/world.rb, line 62
      def announce_inclusion_filter
        if inclusion_filter
          if @configuration.run_all_when_everything_filtered? && RSpec.world.example_count.zero?
            @configuration.reporter.message "No examples were matched by #{inclusion_filter.inspect}, running all"
            @configuration.clear_inclusion_filter
            filtered_examples.clear
          else
            @configuration.reporter.message "Run filtered using #{inclusion_filter.inspect}"
          end
        end
      end