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[`redundant_guards`]: catch `is_empty`, `starts_with` and `ends_with` on slices and `str`s Fixes #11807 Few things worth mentioning: - Taking `snippet`s is now done at callsite, instead of passing a span and doing it in `emit_redundant_guards`. This is because we now need custom suggestion strings in certain places, like `""` for `str::is_empty`. - This now uses `snippet` instead of `snippet_with_applicability`. I don't think this really makes any difference for `MaybeIncorrect`, though? - This could also lint byte strings, as they're of type `&[u8; N]`, but that can be ugly so I decided to leave it out for now changelog: [`redundant_guards`]: catch `str::is_empty`, `slice::is_empty`, `slice::starts_with` and `slice::ends_with` |
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