From 63c4effb16bdc1b154eb02222b8e172f8e83ee52 2021-08-29 16:37:31
From: Artur Svistunov <madbirddiary@gmail.com>
Date: 2021-08-29 16:37:31
Subject: [PATCH] User `EditingMode` instance instead of upper-cased name of a mode

---

diff --git a/IPython/terminal/interactiveshell.py b/IPython/terminal/interactiveshell.py
index 1792523..df170eb 100644
--- a/IPython/terminal/interactiveshell.py
+++ b/IPython/terminal/interactiveshell.py
@@ -201,10 +201,12 @@ class TerminalInteractiveShell(InteractiveShell):
 
         return self.editing_mode
 
-    @observe("editing_mode")
+
+    @observe('editing_mode')
     def _editing_mode_changed(self, change):
+        u_mode = change.new.upper()
         if self.pt_app:
-            self.init_prompt_toolkit_cli()
+            self.pt_app.editing_mode = getattr(EditingMode, u_mode)
 
     @observe('autoformatter')
     def _autoformatter_changed(self, change):