Re: [PATCH] rust: str: add to_ascii_{upper,lower}case() to CString

[Miguel Ojeda]

On Mon, Jan 22, 2024 at 7:46 PM Danilo Krummrich <dakr@xxxxxxxxxx> wrote:
>
> Add functions to convert a CString to upper- / lowercase assuming all
> characters are ASCII encoded.

Like Alice mentioned, please mention the use case, i.e. the "why?"
(perhaps also linking the Zulip discussion if you like [1]).

[1] https://rust-for-linux.zulipchat.com/#narrow/stream/288089-General/topic/String.20manipulation.20in.20kernel.20Rust

> +    /// Converts the whole CString to lowercase.

Please use Markdown and, if possible, an intra-doc link, i.e.

    /// Converts the whole [`CString`] to lowercase.

Also perhaps we should mimic the standard library docs?

> +    pub fn to_ascii_lowercase(&mut self) {
> +        self.buf.make_ascii_lowercase();
> +    }

Why did you choose the `to_ascii_*()` name for these? In the standard
library, the in-place ones are `make_ascii_*()` (like the one you call
in the implementation).

Should the new-object-returned ones be added, by the way, if we are
adding these?

Cheers,
Miguel