--- a/hgext/churn.py
+++ b/hgext/churn.py
@@ -25,7 +25,7 @@ def __gather(ui, repo, node1, node2):
diff = mdiff.unidiff(to, "", tn, "", f).split("\n")
for line in diff:
- if not len(line):
+ if not line:
continue # skip EOF
if line.startswith(" "):
continue # context line