add tag v2_2_9

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v2_2_9@61257 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 45 insertions, 0 deletions

diff --git a/ruby_2_2/lib/irb/ext/change-ws.rb b/ruby_2_2/lib/irb/ext/change-ws.rb
new file mode 100644
index 0000000000..0ae9097285
--- /dev/null
+++ b/ruby_2_2/lib/irb/ext/change-ws.rb
@@ -0,0 +1,45 @@
+#
+#   irb/ext/cb.rb -
+#   	$Release Version: 0.9.6$
+#   	$Revision$
+#   	by Keiju ISHITSUKA(keiju@ruby-lang.org)
+#
+# --
+#
+#
+#
+
+module IRB # :nodoc:
+  class Context
+
+    # Inherited from +TOPLEVEL_BINDING+.
+    def home_workspace
+      if defined? @home_workspace
+        @home_workspace
+      else
+        @home_workspace = @workspace
+      end
+    end
+
+    # Changes the current workspace to given object or binding.
+    #
+    # If the optional argument is omitted, the workspace will be
+    # #home_workspace which is inherited from +TOPLEVEL_BINDING+ or the main
+    # object, <code>IRB.conf[:MAIN_CONTEXT]</code> when irb was initialized.
+    #
+    # See IRB::WorkSpace.new for more information.
+    def change_workspace(*_main)
+      if _main.empty?
+        @workspace = home_workspace
+        return main
+      end
+
+      @workspace = WorkSpace.new(_main[0])
+
+      if !(class<<main;ancestors;end).include?(ExtendCommandBundle)
+        main.extend ExtendCommandBundle
+      end
+    end
+  end
+end
+