prompt_toolkit: Ansi codes instead of color when an exception occurs during completion

[bambu]

Ansi codes are displayed in the console instead of the colors when an exception occurs when tab completing. This happens on the prompt-toolkit branch. On the main branch, the exception works as expected.

Easy way to reproduce the error on the prompt-toolkit branch is by modifying argparse_completion.py with the following:

diff --git a/examples/argparse_completion.py b/examples/argparse_completion.py
index 8d2c3dca..46aa5c8d 100755
--- a/examples/argparse_completion.py
+++ b/examples/argparse_completion.py
@@ -48,6 +48,7 @@ class ArgparseCompletion(Cmd):
             "These things can\ncontain newlines and\n",
             Text("styled text!!", style=Style(color=Color.BRIGHT_YELLOW, underline=True)),
         )
+        raise Exception("poc!")

         table_item = Table(
             "Left Column",

After running the output looks like this when attempting to tab complete completion_item:

python argparse_completion.py

?[1;91mException: ?[0mpoc!

?[93mTo enable full traceback, run the following command: ?[0m?[1;36mset debug true?[0m


?[1;91mException: ?[0mpoc!

?[93mTo enable full traceback, run the following command: ?[0m?[1;36mset debug true?[0m

(Cmd) example --completion_item 

[github-actions]

🤖 Hi @bambu, I've received your request, and I'm working on it now! You can track my progress in the logs for more details.

[github-actions]

🤖 I'm sorry @bambu, but I was unable to process your request. Please see the logs for more details.