From 748e4c77e836a3b7676f399c35d9606acad2855a Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sat, 8 Feb 2025 08:03:46 +0530
Subject: [PATCH] Conversion: Fix a regression in the previous release that
 broke heuristic processing

---
 src/calibre/ebooks/conversion/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/ebooks/conversion/utils.py b/src/calibre/ebooks/conversion/utils.py
index 861ae760b2..42a126c5e7 100644
--- a/src/calibre/ebooks/conversion/utils.py
+++ b/src/calibre/ebooks/conversion/utils.py
@@ -876,5 +876,5 @@ class HeuristicProcessor:
 
         if self.deleted_nbsps:
             # put back non-breaking spaces in empty paragraphs so they render correctly
-            html = self.anyblank.sub(r'\n\g<openline>\u00a0\g<closeline>', html)
+            html = self.anyblank.sub(r'\n\g<openline>' + '\u00a0' + r'\g<closeline>', html)
         return html