From 1913e393212aaa2d58011b9a3803c2b441c2b16a Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 15 Mar 2021 16:38:11 +0530
Subject: [PATCH] Sanitize replacement strings

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

diff --git a/src/calibre/ebooks/metadata/rtf.py b/src/calibre/ebooks/metadata/rtf.py
index 1d629c50d0..f425137321 100644
--- a/src/calibre/ebooks/metadata/rtf.py
+++ b/src/calibre/ebooks/metadata/rtf.py
@@ -206,7 +206,7 @@ def set_metadata(stream, options):
         def replace_or_create(src, name, val):
             val = encode(val)
             pat = re.compile(base_pat.replace('name', name), re.DOTALL)
-            src, num = pat.subn(r'{\\' + name + ' ' + val + '}', src)
+            src, num = pat.subn(r'{\\' + name.replace('\\', r'\\') + ' ' + val.replace('\\', r'\\') + '}', src)
             if num == 0:
                 src = add_metadata_item(src, name, val)
             return src