IdentifierPattern's right-hand side Pattern cannot be an IdentifierPattern
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Assessment
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Newbie friendliness
- 45/100
- Issue type
- Documentation
- Clarity
- Clearly specified
- Activity status
- Stale
- Tech stack
- rust
- Domain
- documentation
Research direction
Read the IdentifierPattern section in src/patterns.md and reproduce the linked playground example to confirm the parsing behavior. Update the reference so the right-hand-side Pattern is explicitly described as disallowing another IdentifierPattern, then verify the wording matches the example's behavior.
Written by the indexing model from the issue text.
Description
https://github.com/rust-lang-nursery/reference/blob/master/src/patterns.md currently mentions that IdentifierPattern's right-hand side is a Pattern, which is allowed to be an IdentifierPattern.
However, the following code doesn't parse let x @ y @ () = (); println!("{:?} {:?}", x, y); (playground) due to pattern bindings not being allowed after the @.
As a consequence, I think the reference should be updated to mention that an IdentifierPattern's right-hand-side Pattern is not actually a full Pattern, but is instead not allowed to be another IdentifierPattern.
- Dominant language
- Rust
- Stars
- 1.6k
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- Avg merge
- 1d 1h
- Merged PRs (30d)
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