Refactor exit command

README.md

@@ -109,22 +109,23 @@ Hello World
 
 The following commands are available on IRB. You can get the same output from the `show_cmds` command.
 
-```
-Workspace
-  cwws           Show the current workspace.
-  chws           Change the current workspace to an object.
-  workspaces     Show workspaces.
-  pushws         Push an object to the workspace stack.
-  popws          Pop a workspace from the workspace stack.
-
+```txt
 IRB
+  exit           Exit the current irb session.
   irb_load       Load a Ruby file.
   irb_require    Require a Ruby file.
   source         Loads a given file in the current session.
   irb_info       Show information about IRB.
   show_cmds      List all available commands and their description.
   history        Shows the input history. `-g [query]` or `-G [query]` allows you to filter the output.
 
+Workspace
+  cwws           Show the current workspace.
+  chws           Change the current workspace to an object.
+  workspaces     Show workspaces.
+  pushws         Push an object to the workspace stack.
+  popws          Pop a workspace from the workspace stack.
+
 Multi-irb (DEPRECATED)
   irb            Start a child IRB.
   jobs           List of current sessions.
@@ -153,6 +154,10 @@ Context
   ls             Show methods, constants, and variables. `-g [query]` or `-G [query]` allows you to filter out the output.
   show_source    Show the source code of a given method or constant.
   whereami       Show the source code around binding.irb again.
+
+Aliases
+  $              Alias for `show_source`
+  @              Alias for `whereami`
 ```
 
 ## Debugging with IRB

lib/irb.rb

@@ -886,8 +886,8 @@ def IRB.start(ap_path = nil)
   end
 
   # Quits irb
-  def IRB.irb_exit(irb, ret)
-    throw :IRB_EXIT, ret
+  def IRB.irb_exit(*)
+    throw :IRB_EXIT
   end
 
   # Aborts then interrupts irb.

lib/irb/cmd/exit.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require_relative "nop"
+
+module IRB
+  # :stopdoc:
+
+  module ExtendCommand
+    class Exit < Nop
+      category "IRB"
+      description "Exit the current irb session."
+
+      def execute(*)
+        IRB.irb_exit
+      rescue UncaughtThrowError
+        Kernel.exit
+      end
+    end
+  end
+
+  # :startdoc:
+end

lib/irb/context.rb

@@ -573,14 +573,6 @@ def inspect_last_value # :nodoc:
       @inspect_method.inspect_value(@last_value)
     end
 
-    alias __exit__ exit
-    # Exits the current session, see IRB.irb_exit
-    def exit(ret = 0)
-      IRB.irb_exit(@irb, ret)
-    rescue UncaughtThrowError
-      super
-    end
-
     NOPRINTING_IVARS = ["@last_value"] # :nodoc:
     NO_INSPECTING_IVARS = ["@irb", "@io"] # :nodoc:
     IDNAME_IVARS = ["@prompt_mode"] # :nodoc:

lib/irb/extend-command.rb

@@ -16,15 +16,6 @@ module ExtendCommandBundle
     # See #install_alias_method.
     OVERRIDE_ALL = 0x02
 
-    # Quits the current irb context
-    #
-    # +ret+ is the optional signal or message to send to Context#exit
-    #
-    # Same as <code>IRB.CurrentContext.exit</code>.
-    def irb_exit(ret = 0)
-      irb_context.exit(ret)
-    end
-
     # Displays current configuration.
     #
     # Modifying the configuration is achieved by sending a message to IRB.conf.
@@ -35,13 +26,16 @@ def irb_context
     @ALIASES = [
       [:context, :irb_context, NO_OVERRIDE],
       [:conf, :irb_context, NO_OVERRIDE],
-      [:irb_quit, :irb_exit, OVERRIDE_PRIVATE_ONLY],
-      [:exit, :irb_exit, OVERRIDE_PRIVATE_ONLY],
-      [:quit, :irb_exit, OVERRIDE_PRIVATE_ONLY],
     ]
 
 
     @EXTEND_COMMANDS = [
+      [
+        :irb_exit, :Exit, "cmd/exit",
+        [:exit, OVERRIDE_PRIVATE_ONLY],
+        [:quit, OVERRIDE_PRIVATE_ONLY],
+        [:irb_quit, OVERRIDE_PRIVATE_ONLY],
+      ],
       [
         :irb_current_working_workspace, :CurrentWorkingWorkspace, "cmd/chws",
         [:cwws, NO_OVERRIDE],