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A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.E-easyCall for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.E-help-wantedCall for participation: Help is requested to fix this issue.Call for participation: Help is requested to fix this issue.E-mentorCall for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.
Description
Types can be parenthesized, which is useful for e.g. dyn (Foo + 'static)
or similar, but often these parentheses are unnecessary. Whenever a trivial type is parenthesized the compiler should suggest to remove the parentheses
pub fn foo() -> (i32) { 42 }
Errors:
Compiling playground v0.0.1 (/playground)
Finished dev [unoptimized + debuginfo] target(s) in 0.64s
This issue has been assigned to @sjmann via this comment.
leonardo-m, estebank, scottmcm, NewWorldVulture and agausmann
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A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.E-easyCall for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.E-help-wantedCall for participation: Help is requested to fix this issue.Call for participation: Help is requested to fix this issue.E-mentorCall for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.