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17ceb5dcb3
## Summary
Given:
```python
if True:
if True:
pass
else:
pass
# a
# b
# c
else:
pass
```
We want to preserve the newline after the `# c` (before the `else`).
However, the `last_node` ends at the `pass`, and the comments are
trailing comments on the `pass`, not trailing comments on the
`last_node` (the `if`). As such, when counting the trailing newlines on
the outer `if`, we abort as soon as we see the comment (`# a`).
This PR changes the logic to skip _all_ comments (even those with
newlines between them). This is safe as we know that there are no
"leading" comments on the `else`, so there's no risk of skipping those
accidentally.
Closes https://github.com/astral-sh/ruff/issues/7602.
## Test Plan
No change in compatibility.
Before:
| project | similarity index | total files | changed files |
|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99963 | 2587 | 319 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99979 | 3496 | 22 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |
After:
| project | similarity index | total files | changed files |
|--------------|------------------:|------------------:|------------------:|
| cpython | 0.76083 | 1789 | 1631 |
| django | 0.99983 | 2760 | 36 |
| transformers | 0.99963 | 2587 | 319 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99983 | 3496 | 18 |
| warehouse | 0.99967 | 648 | 15 |
| zulip | 0.99972 | 1437 | 21 |
|
||
|---|---|---|
| .. | ||
| clause.rs | ||
| mod.rs | ||
| stmt_ann_assign.rs | ||
| stmt_assert.rs | ||
| stmt_assign.rs | ||
| stmt_aug_assign.rs | ||
| stmt_break.rs | ||
| stmt_class_def.rs | ||
| stmt_continue.rs | ||
| stmt_delete.rs | ||
| stmt_expr.rs | ||
| stmt_for.rs | ||
| stmt_function_def.rs | ||
| stmt_global.rs | ||
| stmt_if.rs | ||
| stmt_import.rs | ||
| stmt_import_from.rs | ||
| stmt_ipy_escape_command.rs | ||
| stmt_match.rs | ||
| stmt_nonlocal.rs | ||
| stmt_pass.rs | ||
| stmt_raise.rs | ||
| stmt_return.rs | ||
| stmt_try.rs | ||
| stmt_type_alias.rs | ||
| stmt_while.rs | ||
| stmt_with.rs | ||
| suite.rs | ||