Support `if let` guards in `matches!()` and `assert_matches!()`
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A-macros
A-patterns
C-feature-request
T-libs
- Dominant language
- Rust
- Stars
- 119k
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- 16.2k
- PR merge metrics
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Description
Once https://github.com/rust-lang/rust/pull/141295 (stabilizing if_let_guards) is merged, we should probably support if let guards in matches!() and assert_matches!().
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reviewing pull request 141295 and locating the definitions and tests for matches!() and assert_matches!(). Confirm how the stabilized if let guard syntax should be accepted, then add support and tests demonstrating both macros handle it correctly.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100