From ea3ec1f27b24f6bcb55fdeb9047a6488c07e8233 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Fri, 2 Oct 2026 04:23:05 +0000
Subject: [PATCH] =?UTF-8?q?=E2=9A=A1=20Bolt:=20Optimize=20regex=20replacem?=
 =?UTF-8?q?ent=20in=20template=20init=20script?=
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---
 scripts/init.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/scripts/init.py b/scripts/init.py
index 06a0290..32f9b17 100644
--- a/scripts/init.py
+++ b/scripts/init.py
@@ -134,8 +134,9 @@ def update_file(filepath: str, file_replacements: list[tuple[re.Pattern, str]]):
             return
         new_content = content
         for pattern, replacement in file_replacements:
-            # Use a lambda for replacement to avoid regex backreference injection
-            new_content = pattern.sub(lambda _, r=replacement: r, new_content)
+            # Performance Optimization: Escape backslashes in replacement string so re.sub handles
+            # it directly in C without invoking a Python lambda function per match or risking Ruff B023.
+            new_content = pattern.sub(replacement.replace("\\", "\\\\"), new_content)
 
         if new_content != content:
             path.write_text(new_content)