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-rw-r--r--sphinx/util/nodes.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/sphinx/util/nodes.py b/sphinx/util/nodes.py
index 17584e7c9..44c28f6b2 100644
--- a/sphinx/util/nodes.py
+++ b/sphinx/util/nodes.py
@@ -196,6 +196,7 @@ def traverse_translatable_index(doctree):
# type: (nodes.Node) -> Iterable[Tuple[nodes.Node, List[unicode]]]
"""Traverse translatable index node from a document tree."""
def is_block_index(node):
+ # type: (nodes.Node) -> bool
return isinstance(node, addnodes.index) and \
node.get('inline') is False
for node in doctree.traverse(is_block_index):