1 files changed, 5 insertions, 0 deletions
diff --git a/sphinx/io.py b/sphinx/io.py
index 8813cb3b6..9b27e04fd 100644
--- a/sphinx/io.py
+++ b/sphinx/io.py
@@ -143,6 +143,11 @@ class SphinxDummyWriter(UnfilteredWriter):
         pass
 
 
+def SphinxDummySourceClass(source, *args, **kwargs):
+    """Bypass source object as is to cheat Publisher."""
+    return source
+
+
 class SphinxFileInput(FileInput):
     def __init__(self, app, env, *args, **kwds):
         # type: (Sphinx, BuildEnvironment, Any, Any) -> None