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-rw-r--r--sphinx/util/compat.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/sphinx/util/compat.py b/sphinx/util/compat.py
index 1f3b0f445..438a86fad 100644
--- a/sphinx/util/compat.py
+++ b/sphinx/util/compat.py
@@ -59,7 +59,8 @@ class IndexEntriesMigrator(SphinxTransform):
"""Migrating indexentries from old style (4columns) to new style (5columns)."""
default_priority = 700
- def apply(self):
+ def apply(self, **kwargs):
+ # type: (Any) -> None
for node in self.document.traverse(addnodes.index):
for entries in node['entries']:
if len(entries) == 4: