moved NullSearchException to sphinx.websupport.errors

sphinx/websupport/errors.py

@@ -10,7 +10,8 @@
 """
 
 __all__ = ['DocumentNotFoundError', 'SrcdirNotSpecifiedError',
-           'UserNotAuthorizedError', 'CommentNotAllowedError']
+           'UserNotAuthorizedError', 'CommentNotAllowedError',
+           'NullSearchException']
 
 class DocumentNotFoundError(Exception):
     pass
@@ -26,3 +27,7 @@ class UserNotAuthorizedError(Exception):
 
 class CommentNotAllowedError(Exception):
     pass
+
+
+class NullSearchException(Exception):
+    pass

sphinx/websupport/search/nullsearch.py

@@ -10,11 +10,12 @@
 """
 
 from sphinx.websupport.search import BaseSearch
-
-class NullSearchException(Exception):
-    pass
+from sphinx.websupport.errors import *
 
 class NullSearch(BaseSearch):
+    """A search adapter that does nothing. Used when no search adapter
+    is specified.
+    """
     def feed(self, pagename, title, doctree):
         pass