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This post is auto-generated from RSS feed The Rust Programming Language Forum - Latest topics. Source: Custom version output with clap

I'd like to mimic the behavior of of -h vs --help for -V vs --version, in that I'd like -V to give just application name an version, but --version outputs more information.

I would settle for requiring -v/--verbose for the long version output, rather than activating it via --version.

But I'm unsure how to accomplish any of these.

I think I could accomplish the --verbose variant by simply disabling the default "version" logic:

#[derive(Parser, Debug)]
#[command(disable_version_flag = true)]
struct Args {
  ...
}

.. and then just add my own option for -V and --version.

But how would one go about implementing the other one -- where -V and --version are basically two different options, but are treated as one (with regards to help texts and such)? Is this something ArgGroups can be used for?

Taking a step back .. are there some other mechanisms in clap that can help me achieve this?

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