From 041326f08721fc39e0f5621fcbd794ad3cde231e Mon Sep 17 00:00:00 2001
From: Dimitri Papadopoulos Orfanos
 <3234522+DimitriPapadopoulos@users.noreply.github.com>
Date: Wed, 13 Nov 2024 23:22:19 +0100
Subject: [PATCH] Apply flake8-implicit-str-concat rule ISC001  (#13115)

---
 sphinx/builders/epub3.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sphinx/builders/epub3.py b/sphinx/builders/epub3.py
index 44b2cb10e16..d60c9dd132c 100644
--- a/sphinx/builders/epub3.py
+++ b/sphinx/builders/epub3.py
@@ -65,7 +65,7 @@ class NavPoint(NamedTuple):
     '|[\ufdf0-\ufffd]|[\U00010000-\U000effff]'
 )
 _xml_name_char = (
-    _xml_name_start_char + r'\-|\.' '|[0-9]|\u00b7|[\u0300-\u036f]|[\u203f-\u2040]'
+    _xml_name_start_char + r'\-|\.|[0-9]|\u00b7|[\u0300-\u036f]|[\u203f-\u2040]'
 )
 _XML_NAME_PATTERN = re.compile(f'({_xml_name_start_char})({_xml_name_char})*')