Expose bin_path after parsing

[yanganto]

fix #137

[yanganto]

Hi @tertsdiepraam
The CI fail of Clippy is nothing about the change in the PR. If you want me to fix it in this PR, I am happy to do so.

[yanganto]

Hi @tertsdiepraam
How do you think about this PR?

The bin name is exposed as PathBuf now.

Additionally, when a user developing with uutils-args with cargo run -- -h the bin name in the doc will show the bin name, and not the path to the bin.

If you have any further concern, I am happy to work on it. 😄

[tertsdiepraam]

Hi! Looks good!

There are some things we should probably think about after this change. Maybe it makes sense to not return a tuple but a struct like this:

struct Parsed<S> {
    bin_name: PathBuf,
    operands: Vec<OsString>,
    settings: S,
}

Happy to accept this PR as it is too, but if you agree we can still make that change here.

[yanganto]

Hi, @tertsdiepraam

The struct Parsed<S> is implemented, and also fn trim(self) -> S for Parsed<S> is provided, such that in the happy case, user can straightforwardly get the settings.

If there is anything better to have, I am happy to add it into the PR. 😃

[yanganto]

Hi, @tertsdiepraam

Does anything need to change in the PR?

[tertsdiepraam]

After getting rid of a lot of notifications, I found this again. I'm not really involved with the project anymore so I'm gonna defer to the other maintainers (@sylvestre?). But it looks good

[yanganto]

Hi @sylvestre
I am looking forward to your reviews and comments,
The key change is return struct Parsed after parse.
https://github.com/yanganto/uutils-args/blob/7a55903a455cf547898b15c3b256c686d83b2c65/src/lib.rs#L225-L229

If there is anything need to change please let me know.