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Don't use matches! when == suffices#150405

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Dec 27, 2025
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Don't use matches! when == suffices#150405
bors merged 1 commit intorust-lang:mainfrom
estebank:matches-could-be-equals

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@estebank estebank commented Dec 26, 2025 •
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In the codebase we sometimes use matches! for values that can actually just be compared. Replace them with ==.

Subset of #149933.

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rustbot commented Dec 26, 2025

Some changes occurred in compiler/rustc_passes/src/check_attr.rs

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Some changes occurred to the CTFE / Miri interpreter

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cc @RalfJung, @oli-obk, @lcnr

@rustbot rustbot added A-attributes Area: Attributes (`#[…]`, `#![…]`) S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Dec 26, 2025
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Don't use matches! when == suffices
9f566f2 
In the codebase we sometimes use `matches!` for values that can actually just be compared. Replace them with `==`.
@estebank estebank force-pushed the matches-could-be-equals branch from f77875a to 9f566f2 Compare December 26, 2025 20:28
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Looks good to me, but honestly it's so unusual to read pattern matching with a ==, when I find matches! more familiar

If this is what we are in favour to, because as far as I understand previous discussion ended on that we want to use == instead of matches!, then yeah, let's do it, I guess i will get used to it pretty fast

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oli-obk commented Dec 27, 2025

I personally prefer using if let. matches! feels like a hack due to no chaining support in earlier Rust. See also my comment in #149933 (comment)

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Kivooeo commented Dec 27, 2025

r? me

@bors r+ rollup

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bors commented Dec 27, 2025

📌 Commit 9f566f2 has been approved by Kivooeo

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Dec 27, 2025
@JonathanBrouwer JonathanBrouwer mentioned this pull request Dec 27, 2025
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bors added a commit that referenced this pull request Dec 27, 2025
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Auto merge of #150430 - JonathanBrouwer:rollup-seh9m66, r=JonathanBro…
4c67064 
…uwer

Rollup of 2 pull requests

Successful merges:

 - #150393 (Document relative and absolute paths handling in `--remap-path-prefix`)
 - #150405 (Don't use `matches!` when `==` suffices)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit d63068b into rust-lang:main Dec 27, 2025
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rust-timer added a commit that referenced this pull request Dec 27, 2025
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Unrolled build for #150405
f4cac24 
Rollup merge of #150405 - estebank:matches-could-be-equals, r=Kivooeo

Don't use `matches!` when `==` suffices

In the codebase we sometimes use `matches!` for values that can actually just be compared. Replace them with `==`.

Subset of #149933.
@rustbot rustbot added this to the 1.94.0 milestone Dec 27, 2025
github-actions bot pushed a commit to rust-lang/miri that referenced this pull request Dec 28, 2025
@bors
Auto merge of #150430 - JonathanBrouwer:rollup-seh9m66, r=JonathanBro…
01fe329 
…uwer

Rollup of 2 pull requests

Successful merges:

 - rust-lang/rust#150393 (Document relative and absolute paths handling in `--remap-path-prefix`)
 - rust-lang/rust#150405 (Don't use `matches!` when `==` suffices)

r? `@ghost`
`@rustbot` modify labels: rollup
@github-actions github-actions bot mentioned this pull request Jan 27, 2026
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