Extend unnecessary_unwrap to look for expect in addition to unwrap
changelog: Extend ``[`unnecessary_unwrap`]`` to also check for `Option::expect` and `Result::expect`. Also give code suggestions in some cases.
Fixes#7581
Reference new diagnostic item docs in our docs :)
The title says it all. The rustc dev guide now has some information about diagnostic items that are worthwhile linking to 🙃
---
changelog: none
Issue 7548 fix
Close#7548
changelog: [`bool_assert_comparison`] fixes should be emitted only in case they are comparing a value of a type that implements the `Not` trait with an output of type `bool` against a boolean literal.
Fix `option_if_let_else`
fixes: #5822fixes: #6737fixes: #7567
The inference from #6137 still exists so I'm not sure if this should be moved from the nursery. Before doing that though I'd almost want to see this split into two lints. One suggesting `map_or` and the other suggesting `map_or_else`.
`map_or_else` tends to have longer expressions for both branches so it doesn't end up much shorter than a match expression in practice. It also seems most people find it harder to read. `map_or` at least has the terseness benefit of being on one line most of the time, especially when the `None` branch is just a literal or path expression.
changelog: `break` and `continue` statments local to the would-be closure are allowed in `option_if_let_else`
changelog: don't lint in const contexts in `option_if_let_else`
changelog: don't lint when yield expressions are used in `option_if_let_else`
changelog: don't lint when the captures made by the would-be closure conflict with the other branch in `option_if_let_else`
changelog: don't lint when a field of a local is used when the type could be pontentially moved from in `option_if_let_else`
changelog: in some cases, don't lint when scrutinee expression conflicts with the captures of the would-be closure in `option_if_let_else`
Updated issue templates(formatting and rustbot label reference)
This PR updates our issue templates. The changes are:
1. **Make the *Meta* section smaller and not indented**
The current format sometimes gets messed up when a user simply pasts the rustc version into the issue without indenting it to match the code block. Removing the indention should hopefully help with formatting in the future.
<details><summary>Example of messed up formatting </summary>
</details>
Additionally, I've removed the Version of Clippy from the template. Every issue that I have seen had matching rustc and Clippy versions, and just asking for `rustc -Vv` makes the issue look cleaner IMO.
2. **Add a comment explaining how additional labels can be added with ``@rustbot` label +<label>`. The explanation looks like this:**
```
<!--
Additional labels can be added to this issue by including the following command:
`@rustbot` label +<label>
Common labels for this issue type are:
* `I-suggestion-causes-error`
-->
```
The example ``@rustbot`` call can sadly not be marked as code inside a comment block. But the example will not cause the bot to add any labels. See rust-lang/rust-clippy#7599
---
changelog: none
cc: `@rust-lang/clippy`
Set applicability of needless_collect to MaybeIncorrect
Fixesrust-lang/rust#88333
changelog: Set applicability of [`needless_collect`] to MaybeIncorrect
Common tool documentation uses `match_trait_method` which is deprecated.
Additionally, adds information on why `is_trait_method` is not the
preferred way.
Add module_style lint to style
changelog: Add new [`module_style`] style lint
This is a configurable (no mod file/mod file) lint that determines if `mod.rs` is used consistently or if `mod.rs` is never used (using the new mod layout).
Don't report function calls as unnecessary operation if used in array index
Attempts to fix: #7412
changelog: Don't report function calls used in indexing as unnecessary operation. [`unnecessary_operation`]
Add tests for disallowed_mod in ui-cargo test section
Use correct algorithm to determine if mod.rs is missing
Move to two lints and remove config option
Switch lint names so they read "warn on ..."
Emit the same help info for self_named_mod_file warnings
Bail when both lints are Allow
Reword help message for both module_style lints
Get piece unchecked in `write`
We already use specialized `zip`, but it seems like we can do a little better by not checking `pieces` length at all.
`Arguments` constructors are now unsafe. So the `format_args!` expansion now includes an `unsafe` block.
<details>
<summary>Local Bench Diff</summary>
```text
name before ns/iter after ns/iter diff ns/iter diff % speedup
fmt::write_str_macro1 22,967 19,718 -3,249 -14.15% x 1.16
fmt::write_str_macro2 35,527 32,654 -2,873 -8.09% x 1.09
fmt::write_str_macro_debug 571,953 575,973 4,020 0.70% x 0.99
fmt::write_str_ref 9,579 9,459 -120 -1.25% x 1.01
fmt::write_str_value 9,573 9,572 -1 -0.01% x 1.00
fmt::write_u128_max 176 173 -3 -1.70% x 1.02
fmt::write_u128_min 138 134 -4 -2.90% x 1.03
fmt::write_u64_max 139 136 -3 -2.16% x 1.02
fmt::write_u64_min 129 135 6 4.65% x 0.96
fmt::write_vec_macro1 24,401 22,273 -2,128 -8.72% x 1.10
fmt::write_vec_macro2 37,096 35,602 -1,494 -4.03% x 1.04
fmt::write_vec_macro_debug 588,291 589,575 1,284 0.22% x 1.00
fmt::write_vec_ref 9,568 9,732 164 1.71% x 0.98
fmt::write_vec_value 9,516 9,625 109 1.15% x 0.99
```
</details>
