Merge pull request #10481 from ipython/auto-backport-of-pr-10479

Backport PR  #10479 on branch 5.x

IPython/terminal/debugger.py

@@ -64,6 +64,7 b' class TerminalPdb(Pdb):'
                             mouse_support=self.shell.mouse_support,
                             get_prompt_tokens=get_prompt_tokens,
                             display_completions_in_columns=multicolumn,
+                            style=self.shell.style
         )
         self.pt_cli = CommandLineInterface(self._pt_app, eventloop=self.shell._eventloop)
 

IPython/terminal/interactiveshell.py

@@ -243,7 +243,7 b' class TerminalInteractiveShell(InteractiveShell):'
                 last_cell = cell
 
         self._style = self._make_style_from_name_or_cls(self.highlighting_style)
-        style = DynamicStyle(lambda: self._style)
+        self.style = DynamicStyle(lambda: self._style)
 
         editing_mode = getattr(EditingMode, self.editing_mode.upper())
 
@@ -257,7 +257,7 b' class TerminalInteractiveShell(InteractiveShell):'
                             completer=IPythonPTCompleter(shell=self,
                                                     patch_stdout=patch_stdout),
                             enable_history_search=True,
-                            style=style,
+                            style=self.style,
                             mouse_support=self.mouse_support,
                             **self._layout_options()
         )