[ruby/irb] Add "show_cmds" command to list all commands'

descriptions
(https://github.com/ruby/irb/pull/463)

https://github.com/ruby/irb/commit/7e857655ac

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/irb/cmd/chws.rb b/lib/irb/cmd/chws.rb
index b28c090686..7c84ba0a4b 100644
--- a/lib/irb/cmd/chws.rb
+++ b/lib/irb/cmd/chws.rb
@@ -19,12 +19,18 @@ module IRB
   module ExtendCommand
 
     class CurrentWorkingWorkspace < Nop
+      category "IRB"
+      description "Show the current workspace."
+
       def execute(*obj)
         irb_context.main
       end
     end
 
     class ChangeWorkspace < Nop
+      category "IRB"
+      description "Change the current workspace to an object."
+
       def execute(*obj)
         irb_context.change_workspace(*obj)
         irb_context.main