1 files changed, 50 insertions, 38 deletions
diff --git a/tasks/doc.rake b/tasks/doc.rake
index 11b76bb3f..8013ed038 100644
--- a/tasks/doc.rake
+++ b/tasks/doc.rake
@@ -1,48 +1,60 @@
 desc 'generate document'
-task :doc => [:api_doc, :capi_doc] do
-
-end
-
-desc 'generate yard docs'
-task :api_doc do
-  begin
-    sh "mrbdoc"
-  rescue
-    puts "ERROR: To generate yard documentation, you should install yard-mruby gem."
-    puts "  $ gem install yard-mruby yard-coderay"
+task :doc => %w[doc:api doc:capi]
+
+namespace :doc do
+  desc 'generate yard docs'
+  task :api do
+    begin
+      sh "mrbdoc"
+    rescue
+      puts "ERROR: To generate yard documentation, you should install yard-mruby gem."
+      puts "  $ gem install yard-mruby yard-coderay"
+    end
   end
-end
 
-desc 'generate doxygen docs'
-task :capi_doc do
-  begin
-    sh "doxygen Doxyfile"
-  rescue
-    puts "ERROR: To generate C API documents, you need Doxygen."
-    puts "  $ sudo apt-get install doxygen"
+  desc 'generate doxygen docs'
+  task :capi do
+    begin
+      sh "doxygen Doxyfile"
+    rescue
+      puts "ERROR: To generate C API documents, you need Doxygen."
+      puts "  $ sudo apt-get install doxygen"
+    end
   end
-end
 
-desc 'clean all built docs'
-task :clean_api_doc do
-  rm_rf 'doc/api'
-end
+  desc 'clean all built docs'
+  task :clean => %w[clean:api clean:capi]
 
-desc 'clean all built docs'
-task :clean_capi_doc do
-  rm_rf 'doc/capi'
-end
+  namespace :clean do
+    desc 'clean yard docs'
+    task :api do
+      rm_rf 'doc/api'
+    end
 
-desc 'clean all built docs'
-task :clean_doc => [:clean_api_doc, :clean_capi_doc] do
-end
+    desc 'clean doxygen docs'
+    task :capi do
+      rm_rf 'doc/capi'
+    end
+  end
 
-desc 'clean all built docs'
-task :view_api => [:api_doc] do
-  sh 'xdg-open doc/api/index.html'
-end
+  namespace :view do
+    desc 'open yard docs'
+    task :api do
+      sh 'xdg-open doc/api/index.html'
+    end
 
-desc 'clean all built docs'
-task :view_capi => [:capi_doc] do
-  sh 'xdg-open doc/capi/html/index.html'
+    desc 'open doxygen docs'
+    task :capi do
+      sh 'xdg-open doc/capi/html/index.html'
+    end
+  end
 end
+
+# deprecated
+task "api_doc" => "doc:api"
+task "capi_doc" => "doc:capi"
+task "clean_doc" => "doc:clean"
+task "clean_api_doc" => "doc:clean:api"
+task "clean_capi_doc" => "doc:clean:capi"
+task "view_api" => "doc:view:api"
+task "view_capi" => "doc:view:capi"