Support C++ output language

Rakefile

@@ -1,5 +1,7 @@
 require "rake/clean"
 require "rspec/core/rake_task"
+require "simplecov"
+require "stringio"
 
 CLEAN.include %w[spec/run gen .yardoc yard coverage dist]
 
@@ -12,6 +14,16 @@ RSpec::Core::RakeTask.new(:spec, :example_pattern) do |task, args|
     task.rspec_opts = %W[-e "#{args.example_pattern}" -f documentation]
   end
 end
+task :spec do |task, args|
+  original_stdout = $stdout
+  sio = StringIO.new
+  $stdout = sio
+  SimpleCov.collate Dir["coverage/.resultset.json"]
+  $stdout = original_stdout
+  sio.string.lines.each do |line|
+    $stdout.write(line) unless line =~ /Coverage report generated for/
+  end
+end
 
 # dspec task is useful to test the distributable release script, but is not
 # useful for coverage information.