Auto merge of #11818 - y21:more_redundant_guards, r=llogiq

[`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`

0 files changed, 0 insertions, 0 deletions