no_version have to be marked twice to hide version info of subcommand

[epage]

Issue by loichyan
Friday Feb 12, 2021 at 10:36 GMT
Originally opened as TeXitoi/structopt#465

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In code below, I have to mark no_version at both P1 and P2 to hide version info of sub1. For subcommands, their version info should be successfully hided when I marked no_version anywhere.

use structopt::clap::AppSettings::DisableVersion;

#[derive(structopt::StructOpt)]
enum Cmd {
    #[structopt(no_version)]  // P1
    Sub1(Sub1),
}

#[derive(structopt::StructOpt)]
#[structopt(
    no_version,  // P2
    global_settings = &[DisableVersion])]
struct Sub1 {}

#[paw::main]
fn main(cmd: Cmd) {
    match cmd {
        Cmd::Sub1(_s1) => {}
    }
}

BTW, this sounds a little similar to #324.

[epage]

Comment by TeXitoi
Friday Mar 05, 2021 at 13:33 GMT

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There is no way of removing the version of a subcommand, as the different enum can't know each others.

The real solution to this problem would be to have no default version handling, and a argument less version to find automatically the version number. It would be coherent with authors. But that's a breaking change, and that's not enough to justify a new major version.

[epage]

version is now opt-in, instead of opt-out. We also only propagate populated versions. I believe this is now fixed.