1 files changed, 14 insertions, 0 deletions
diff --git a/lib/irb/cmd/debug.rb b/lib/irb/cmd/debug.rb
index 2c09c99cf0..76f17e3c2f 100644
--- a/lib/irb/cmd/debug.rb
+++ b/lib/irb/cmd/debug.rb
@@ -5,6 +5,9 @@ module IRB
 
   module ExtendCommand
     class Debug < Nop
+      category "Debugging"
+      description "Start the debugger of debug.gem."
+
       BINDING_IRB_FRAME_REGEXPS = [
         '<internal:prelude>',
         binding.method(:irb).source_location.first,
@@ -108,5 +111,16 @@ module IRB
         end
       end
     end
+
+    class DebugCommand < Debug
+      def self.category
+        "Debugging"
+      end
+
+      def self.description
+        command_name = self.name.split("::").last.downcase
+        "Start the debugger of debug.gem and run its `#{command_name}` command."
+      end
+    end
   end
 end