[phicoh]

In practice, with Rust the problem is somewhere else. There is a libc crate that wraps the Unix system calls, so no need to worry about that. What is a lot harder is that Unix filenames are not guaranteed to be UTF-8. So you can't convert to &str or String. At least, not without loss. So you have to keep this around as an OsString.

[kreco]

Yeah that's the kind of thing I'm talking about.

Even when you don't care about being cross-platform, you still need to rely on specific routines instead of having the most low level `ut8fopen(buffer, len, mode);`

My point is that I wish we would have a new "standard OS-related API", not even talking about introducing span type or anything, just creating something way more sane and care about moving forward from this point.

If I was about to create my own OS and decided to eliminate null-terminating string, and keep it as tiny and efficient as possible, I would face so many issues because I cannot reuse 99% of the code (related to file API) that already exists, I would need to think how to properly parse arguments from "main" without overhead etc.