konsti 46f8961292 Formatter: Add EmptyWithDanglingComments helper (#5951) ... **Summary** Add a `EmptyWithDanglingComments` format helper that formats comments inside empty parentheses, brackets or curly braces. Previously, this was implemented separately, and partially incorrectly, for each use case. Empty `()`, `[]` and `{}` are special because there can be dangling comments, and they can be in two positions: ```python x = [  # end-of-line     # own line ] ``` These comments are dangling because they can't be assigned to any element inside as they would in all other cases. **Test Plan** Added a regression test. 145 (from previously 149) instances of unstable formatting remaining. ``` $ cargo run --bin ruff_dev --release -- format-dev --stability-check --error-file formatter-ecosystem-errors.txt --multi-project target/checkouts > formatter-ecosystem-progress.txt $ rg "Unstable formatting" target/formatter-ecosystem-errors.txt | wc -l 145 ```		2023-07-23 14:32:16 +02:00
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snapshots	Formatter: Add EmptyWithDanglingComments helper (#5951)	2023-07-23 14:32:16 +02:00
fixtures.rs	Format target: annotation = value? expressions (#5661)	2023-07-11 16:40:28 +02:00