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Fix internal magic commas not being force expanded #3377

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Fix internal magic commas not being force expanded #3377

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7b2c2ca
Create failing test case
KindaOK Nov 9, 2022
8429ebc
Correct quote type in test case
KindaOK Nov 9, 2022
6079db6
Fix another test bug
KindaOK Nov 16, 2022
48042ee
Move `omit` yield to end of generator
KindaOK Nov 16, 2022
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2 changes: 1 addition & 1 deletion src/black/linegen.py
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Expand Up @@ -1231,7 +1231,6 @@ def generate_trailers_to_omit(line: Line, line_length: int) -> Iterator[Set[Leaf
omit.add(id(closing_bracket))
omit.update(inner_brackets)
inner_brackets.clear()
yield omit

if (
prev
Expand All @@ -1246,6 +1245,7 @@ def generate_trailers_to_omit(line: Line, line_length: int) -> Iterator[Set[Leaf
if leaf.value:
opening_bracket = leaf.opening_bracket
closing_bracket = leaf
yield omit


def run_transformer(
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33 changes: 33 additions & 0 deletions tests/data/simple_cases/deep_trailing_commas.py
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@@ -0,0 +1,33 @@
assert foo(1, 2, 3,)[0] == {"bar": "baz"}

a = [1,][2]()
b = [1,][2](3)

[1, 2,]()(3, 4,)()(5, 6,)(0)(0)

# output


assert foo(
1,
2,
3,
)[0] == {"bar": "baz"}

a = [
1,
][2]()
b = [
1,
][2](3)

[
1,
2,
]()(
3,
4,
)()(
5,
6,
)(0)(0)