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This is an intermediate solution for #4408. As there were no agreeed upon goals, I went with what I felt read well and that I saw commonly used on non-clap commands. - "information" isn't really a necessary word. - I originally favored `Print this help` but realied that doesn't read correctly in completions. - Besides being shorter, the reason for the flipped short/long hint is it gives people the context they need for scanning, emphasizing "summary" and "more". Fixes #4409
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For more on creating a custom subcommand, see the cargo
book.
The crate clap-cargo can help in
mimicking cargo's interface.
The help looks like:
$ cargo-example-derive --help
Usage: cargo <COMMAND>
Commands:
example-derive A simple to use, efficient, and full-featured Command Line Argument Parser
help Print this message or the help of the given subcommand(s)
Options:
-h, --help Print help
$ cargo-example-derive example-derive --help
A simple to use, efficient, and full-featured Command Line Argument Parser
Usage: cargo example-derive [OPTIONS]
Options:
--manifest-path <MANIFEST_PATH>
-h, --help Print help
-V, --version Print version
Then to directly invoke the command, run:
$ cargo-example-derive example-derive
None
$ cargo-example-derive example-derive --manifest-path Cargo.toml
Some("Cargo.toml")