Re: [PATCH v3 2/2] checkpatch: warn on known non-plural rust doc headers

[Benno Lossin <benno.lossin@proton.me>]

On 12.09.24 21:56, Patrick Miller wrote:
> Adds a check for documentation in rust file. Warns if certain known
> documentation headers are not plural.
> 
> The rust maintainers prefer document headers to be plural. This is to enforce
> consistency among the documentation as well as to protect against errors when
> additions are made. For example, if the header said "Example" because there was
> only 1 example, if a second example was added, making the header plural could
> easily be missed and the maintainers prefer to not have to remind people to fix
> their documentation.

Nit: this is wrapped to 80 chars, but a maximum of 75 columns is
preferred. I usually use 72.

---
Cheers,
Benno

> Link: https://github.com/Rust-for-Linux/linux/issues/1110
> 
> v1: https://lore.kernel.org/rust-for-linux/2024090628-bankable-refusal-5f20@gregkh/T/#t
> v2: https://lore.kernel.org/rust-for-linux/92be0b48-cde9-4241-8ef9-7fe4d7c42466@proton.me/T/#t
>   - fixed whitespace that was formatted due to editor settings
> v3:
>   - move && to previous line and remove whitespace in WARN per Joe Perches
>   - reformat following C coding style
> ---
>  scripts/checkpatch.pl | 7 ++++
> +++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 39032224d504..5b18246ad511 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -3900,6 +3900,13 @@ sub process {
>  			     "Avoid using '.L' prefixed local symbol names for denoting a range of code via 'SYM_*_START/END' annotations; see Documentation/core-api/asm-annotations.rst\n" . $herecurr);
>  		}
> 
> +# check that document section headers are plural in rust files
> +		if ($realfile =~ /\.rs$/ &&
> +		    $rawline =~ /^\+\s*\/\/\/\s+#+\s+(Example|Invariant|Guarantee|Panic)\s*$/) {
> +			WARN("RUST_DOC_HEADER",
> +			     "Rust doc headers should be plural\n" . $herecurr);
> +		}
> +
>  # check we are in a valid source file C or perl if not then ignore this hunk
>  		next if ($realfile !~ /\.(h|c|pl|dtsi|dts)$/);
> 
> --
> 2.46.0
>