From dae9bc4e3c67ccd6bec8df855a41fbbca0f479b4 Mon Sep 17 00:00:00 2001
From: Dmitry Shachnev <mitya57@gmail.com>
Date: Sat, 31 Jan 2026 15:27:46 +0300
Subject: [PATCH] Support Sphinx 9

---
 sphinxcontrib/websupport/builder.py        | 12 +++++-------
 tests/roots/test-root/root/markup.txt      |  2 +-
 tests/roots/test-searchadapters/markup.txt |  4 ++--
 3 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/sphinxcontrib/websupport/builder.py b/sphinxcontrib/websupport/builder.py
index a8a2bd7..c9dba86 100644
--- a/sphinxcontrib/websupport/builder.py
+++ b/sphinxcontrib/websupport/builder.py
@@ -9,7 +9,6 @@
 from os import path
 from typing import TYPE_CHECKING, Any
 
-from docutils.io import StringOutput
 from sphinx.jinja2glue import BuiltinTemplateLoader
 from sphinx.util.osutil import copyfile, ensuredir, os_path, relative_uri
 
@@ -80,7 +79,6 @@ def prepare_writing(self, docnames: Iterable[str]) -> None:
         self.globalcontext['no_search_suffix'] = True
 
     def write_doc(self, docname: str, doctree: nodes.document) -> None:
-        destination = StringOutput(encoding='utf-8')
         doctree.settings = self.docsettings
 
         self.secnumbers = self.env.toc_secnumbers.get(docname, {})
@@ -88,12 +86,12 @@ def write_doc(self, docname: str, doctree: nodes.document) -> None:
         self.imgpath = '/' + posixpath.join(self.virtual_staticdir, self.imagedir)
         self.dlpath = '/' + posixpath.join(self.virtual_staticdir, '_downloads')
         self.current_docname = docname
-        self.docwriter.write(doctree, destination)
-        self.docwriter.assemble_parts()
-        body = self.docwriter.parts['fragment']
-        metatags = self.docwriter.clean_meta
+        visitor = self.create_translator(doctree, self)
+        doctree.walkabout(visitor)
+        body = ''.join(visitor.fragment)
+        clean_meta = ''.join(visitor.meta[2:])
 
-        ctx = self.get_doc_context(docname, body, metatags)
+        ctx = self.get_doc_context(docname, body, clean_meta)
         self.handle_page(docname, ctx, event_arg=doctree)
 
     def write_doc_serialized(self, docname: str, doctree: nodes.document) -> None:
diff --git a/tests/roots/test-root/root/markup.txt b/tests/roots/test-root/root/markup.txt
index 714dabe..668e6bd 100644
--- a/tests/roots/test-root/root/markup.txt
+++ b/tests/roots/test-root/root/markup.txt
@@ -369,7 +369,7 @@ Index markup
    pair: entry; pair
    double: entry; double
    triple: index; entry; triple
-   keyword: with
+   pair: keyword; with
    see: from; to
    seealso: fromalso; toalso
 
diff --git a/tests/roots/test-searchadapters/markup.txt b/tests/roots/test-searchadapters/markup.txt
index 77f245a..e0fb6c2 100644
--- a/tests/roots/test-searchadapters/markup.txt
+++ b/tests/roots/test-searchadapters/markup.txt
@@ -377,7 +377,7 @@ Index markup
    pair: entry; pair
    double: entry; double
    triple: index; entry; triple
-   keyword: with
+   pair: keyword; with
    see: from; to
    seealso: fromalso; toalso
 
@@ -386,7 +386,7 @@ Invalid index markup...
 .. index::
    single:
    pair:
-   keyword:
+   pair: keyword;
 
 .. index::
    !Main, !Other