From 4c7ee22af241e0511350948217dfd29ee1b12b7b Mon Sep 17 00:00:00 2001
From: Chris Mayo <aklhfex@gmail.com>
Date: Tue, 30 Sep 2025 19:31:25 +0100
Subject: [PATCH] Docutils 0.22 compatibility

backrefs attribute no longer used.

Upstream-PR: https://github.com/pradyunsg/sphinx-inline-tabs/pull/51

diff --git a/src/sphinx_inline_tabs/_impl.py b/src/sphinx_inline_tabs/_impl.py
index 48e9537..f23ca28 100644
--- a/src/sphinx_inline_tabs/_impl.py
+++ b/src/sphinx_inline_tabs/_impl.py
@@ -23,7 +23,7 @@ def visit(translator, node):
         attributes.pop("classes")
         attributes.pop("names")
         attributes.pop("dupnames")
-        attributes.pop("backrefs")
+        attributes.pop("backrefs", None)
 
         if node._endtag:
             text = translator.starttag(node, node._tagname, **attributes)