CommandSet is Enumerable.

lib/pry/command_set.rb

@@ -31,6 +31,7 @@ class Pry
       end
     end
 
+    include Enumerable
     include Pry::Helpers::BaseHelpers
 
     attr_reader :commands
@@ -121,6 +122,16 @@ class Pry
       commands[name] = Command.new(name, description, options, block)
     end
 
+    def each &block
+      if block_given?
+        @commands.each do |name, struct|
+          yield(name, struct)
+        end
+      else
+        @commands.to_enum
+      end
+    end
+
     # Removes some commands from the set
     # @param [Array<String>] names name of the commands to remove
     def delete(*names)