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-rw-r--r--python/servo/mutation/mutator.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/python/servo/mutation/mutator.py b/python/servo/mutation/mutator.py
index 8018ddc6116..0f359cb5107 100644
--- a/python/servo/mutation/mutator.py
+++ b/python/servo/mutation/mutator.py
@@ -138,8 +138,8 @@ class DuplicateLine(Strategy):
plus_equals_statement = r".+?\s\+\=\s.*"
minus_equals_statement = r".+?\s\-\=\s.*"
self._replace_strategy = {
- 'regex': (append_statement + '|' + remove_statement + '|' + push_statement +
- '|' + pop_statement + '|' + plus_equals_statement + '|' + minus_equals_statement),
+ 'regex': (append_statement + '|' + remove_statement + '|' + push_statement
+ + '|' + pop_statement + '|' + plus_equals_statement + '|' + minus_equals_statement),
'replaceString': r"\g<0>\n\g<0>",
}