Replace None filename with '' in Sphinx.add_js_file() (#13402)

mitya57 · AA-Turner · web-flow · commit 13d2899666c9 · 2025-03-02T19:57:02.000Z
Co-authored-by: Adam Turner &lt;9087854+aa-turner@users.noreply.github.com&gt;
diff --git a/CHANGES.rst b/CHANGES.rst
@@ -17,6 +17,7 @@ Bugs fixed
 ----------
 
 * #13392: Fix argument type for ``jieba.load_userdict()``.
+* #13402: Ensure inline ``<script>`` tags are written exactly once.
 
 Testing
 -------
diff --git a/sphinx/application.py b/sphinx/application.py
@@ -1507,6 +1507,7 @@ def add_js_file(
         elif loading_method == 'defer':
             kwargs['defer'] = 'defer'
 
+        filename = filename or ''
         self.registry.add_js_file(filename, priority=priority, **kwargs)
         with contextlib.suppress(AttributeError):
             self.builder.add_js_file(  # type: ignore[attr-defined]
