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move modules from kebab-case to snake_case #14439

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move modules from kebab-case to snake_case #14439

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e6f5383
move modules from kebab-case to snake_case
DSchroer Aug 21, 2024
e31e430
Revert "move modules from kebab-case to snake_case"
DSchroer Aug 22, 2024
c2e6f84
call out binaries vs modules in naming
DSchroer Aug 22, 2024
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16 changes: 8 additions & 8 deletions src/doc/src/guide/project-layout.md
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@weihanglo weihanglo Aug 23, 2024 •
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In reply to #14439 (comment):

Are cargo targets a cargo concept?

Yes. See https://doc.rust-lang.org/nightly/cargo/reference/cargo-targets.html.

If so can we define the naming convention somewhere here in the cargo docs that says those targets should be kebab-case?

What's the benefit of it?

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The thing is without a codified standard its hard to enforce. So people will start drifting and you will end up with multiple groups doing different things. If it becomes part of the docs then its easier to PR lints into Clippy in order to enable automatic enforcement for projects and makes the ecosystem easier and more coherent.

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Thank you for explaining that :)

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If it becomes part of the docs then its easier to PR lints into Clippy in order to enable automatic enforcement for projects and makes the ecosystem easier and more coherent.

I suspect this lint should live in cargo, not clippy.

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That's fair. However we still need to spell out the rule in some docs first and I think this is the place for it.

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I disagree that this is the place for it.

Also, even better than documenting this is to lint for it. If we have specific naming recommendations, we can use #12235 (unstable implementation is in place) to lint for naming like rustc does for functions, structs, etc.

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Also, even better than documenting this is to lint for it.

100% agree. However you end up in a chicken and egg problem. If I propose a semantic lint like this with no docs to support it, then I will end up with a really hard time getting it merged. So its just a first step here to remove an ambiguous situation.

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So where specifically should I try to put this?

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Original file line number Diff line number Diff line change
Expand Up @@ -11,24 +11,24 @@ Cargo [package][def-package]:
│   ├── lib.rs
│   ├── main.rs
│   └── bin/
│ ├── named-executable.rs
│      ├── another-executable.rs
│      └── multi-file-executable/
│ ├── named_executable.rs
│      ├── another_executable.rs
│      └── multi_file_executable/
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I believe this would have end-user affects, making the default binary names use _ when the status quo is for binaries to use -.

As these are not just mod names but build target names, i would be inclined to leave all of these as -

│      ├── main.rs
│      └── some_module.rs
├── benches/
│   ├── large-input.rs
│   └── multi-file-bench/
│   ├── large_input.rs
│   └── multi_file_bench/
│   ├── main.rs
│   └── bench_module.rs
├── examples/
│   ├── simple.rs
│   └── multi-file-example/
│   └── multi_file_example/
│   ├── main.rs
│   └── ex_module.rs
└── tests/
├── some-integration-tests.rs
└── multi-file-test/
├── some_integration_tests.rs
└── multi_file_test/
├── main.rs
└── test_module.rs
```
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