Update clap to v4

[CosmicHorrorDev]

Resolves #13

This updates clap to v4 and switches to the derive API. It looks like the flag order got changed to the declaration order, so it's possible you may want that changed to match, but other than that everything seems more or less the same

I can't seem to get the author or version to set in the help message no matter what I try (enabling the cargo command, explicitly setting it, using clap::crate_authors!(), etc), so I'll have to dig into that some more

The help text before and after

[Aloso]

Thank you for this. To include version and author, it seems like help_template must be used:

#[command(
    author,
    version,
    about,
    max_term_width = 100,
    help_template = "\
{before-help}{name} {version}
{author-with-newline}{about-with-newline}
{usage-heading} {usage}

{all-args}{after-help}"
)]

I found this by looking at the docs for clap 4.1.8, since the documentation for Command is missing in the latest version.

[CosmicHorrorDev]

Nice find! I wonder if that was an intentional change by clap or not?

Either way that should work fine. You can push a commit for it if ya want since I'll be AFK for the rest of the day

[CosmicHorrorDev]

I missed this note under Command::authors() before. It does indeed seem to be an intentional change

NOTE: A custom help_template is needed for author to show up.

[Aloso]

@CosmicHorrorDev I just pushed a change, which adds the version and author and minor tweaks to the help message.

[CosmicHorrorDev]

Thanks! It all LGTM 👍

[Aloso]

It does indeed seem to be an intentional change

Yes, though I can't say I approve. When someone writes #[command(version, author)], that usually means that they want this information to be displayed.

[CosmicHorrorDev]

I'm in the same boat. It seems incredibly uncommon that someone wants to set the author info for something other than the help message

I know that clap v0.5 is planned, so could be worth opening a discussion to voice your opinion, and potentially get better insight into things

[Aloso]

Yes, I might do that.

The code looks good, thank you for the contribution 🙂

[CosmicHorrorDev]

I've got more contributions planned too 😁

I'll make sure to open issues beforehand though. No worries

[Aloso]

I appreciate that! I just hope it doesn't keep you from writing blog posts 😆