Charlie Marsh
4c4eceee36
Add dangling comment handling for lambda expressions (#7493)
## Summary
This PR adds dangling comment handling for `lambda` expressions. In
short, comments around the `lambda` and the `:` are all considered
dangling. Comments that come between the `lambda` and the `:` may be
moved after the colon for simplicity (this is an odd position for a
comment anyway), unless they also precede the lambda parameters, in
which case they're formatted before the parameters.
Closes https://github.com/astral-sh/ruff/issues/7470.
## Test Plan
`cargo test`
No change in similarity.
Before:
| project | similarity index | total files | changed files |
|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1632 |
| django | 0.99982 | 2760 | 37 |
| transformers | 0.99957 | 2587 | 398 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99983 | 3496 | 18 |
| warehouse | 0.99929 | 648 | 16 |
| zulip | 0.99962 | 1437 | 22 |
After:
| project | similarity index | total files | changed files |
|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1632 |
| django | 0.99982 | 2760 | 37 |
| transformers | 0.99957 | 2587 | 398 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99983 | 3496 | 18 |
| warehouse | 0.99929 | 648 | 16 |
| zulip | 0.99962 | 1437 | 22 |
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