From 43c1657a2037040de565b4ca388f6fcb71576c2b Mon Sep 17 00:00:00 2001
From: Miro <200482516+Mirochill@users.noreply.github.com>
Date: Mon, 25 May 2026 20:42:01 +0200
Subject: [PATCH] Fix invalid escape sequences

---
 bash_kernel/display.py | 2 +-
 bash_kernel/kernel.py  | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/bash_kernel/display.py b/bash_kernel/display.py
index 24f357b..44baa42 100644
--- a/bash_kernel/display.py
+++ b/bash_kernel/display.py
@@ -8,7 +8,7 @@
 
 $ cat dog.png | display
 $ echo "<b>Dog</b>, not a cat." | displayHTML
-$ echo "alert('It is known khaleesi\!');" | displayJS
+$ echo "alert('It is known khaleesi\\!');" | displayJS
 
 ### Updating rich content cells
 
diff --git a/bash_kernel/kernel.py b/bash_kernel/kernel.py
index 3b9cf44..d0ed69d 100644
--- a/bash_kernel/kernel.py
+++ b/bash_kernel/kernel.py
@@ -127,11 +127,11 @@ def _start_bash(self):
             # replwrap seeing that as the next prompt, we'll embed the marker characters
             # for invisible characters in the prompt; these show up when inspecting the
             # environment variable, but not when bash displays the prompt.
-            ps1 = self.unique_prompt + u'\[\]' + ">"
-            ps2 = self.unique_prompt + u'\[\]' + "+"
+            ps1 = self.unique_prompt + u'\\[\\]' + ">"
+            ps2 = self.unique_prompt + u'\\[\\]' + "+"
             prompt_change = u"PS1='{0}' PS2='{1}' PROMPT_COMMAND=''".format(ps1, ps2)
             # Using IREPLWrapper to get incremental output
-            self.bashwrapper = IREPLWrapper(child, u'\$', prompt_change, self.unique_prompt,
+            self.bashwrapper = IREPLWrapper(child, u'\\$', prompt_change, self.unique_prompt,
                                             extra_init_cmd="export PAGER=cat",
                                             line_output_callback=self.process_output)
         finally: