konsti 972f9a9c15 Fix formatting lambda with empty arguments (#5944) ... **Summary** Fix implemented in https://github.com/astral-sh/RustPython-Parser/pull/35: Previously, empty lambda arguments (e.g. `lambda: 1`) would get the range of the entire expression, which leads to incorrect comment placement. Now empty lambda arguments get an empty range between the `lambda` and the `:` tokens. **Test Plan** Added a regression test. 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 149 ```		2023-07-21 15:48:45 +02:00
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snapshots	Fix formatting lambda with empty arguments (#5944)	2023-07-21 15:48:45 +02:00
fixtures.rs	Format target: annotation = value? expressions (#5661)	2023-07-11 16:40:28 +02:00