clap_complete: incorrect args appear on nested subcommands with the same name

[m4rch3n1ng]

Please complete the following tasks

• I have searched the discussions
• I have searched the open and rejected issues

Rust Version

rustc 1.75.0-beta.4 (bd45872d9 2023-11-28)

Clap Version

[[package]]
name = "clap"
version = "4.4.10"

Minimal reproducible code

use clap::{Args, CommandFactory, Parser, Subcommand};
use clap_complete::{generate, Shell};

#[derive(Parser)]
struct Cli {
	#[command(subcommand)]
	sub: Option<Top>,
}

#[derive(Subcommand)]
enum Top {
	Config(TopConfigArgs),
	Sync(SyncArgs),
}

#[derive(Args)]
struct TopConfigArgs {
	/// should only appear for top level config
	#[arg(long)]
	test: bool,
}

#[derive(Args)]
struct SyncArgs {
	#[command(subcommand)]
	pub sub: SyncCmd,
}

#[derive(Subcommand)]
enum SyncCmd {
	Config,
}

fn main() {
	let _ = Cli::parse();

	let mut cli = Cli::command();
	generate(Shell::Fish, &mut cli, "stuff", &mut std::io::stdout());
}

Steps to reproduce the bug with the above code

(only tested in fish shell)

$ cargo run > complete.fish
$ source complete.fish

and then test the completions for stuff config -- and stuff sync config --

Actual Behaviour

it works as expected if you try to complete for stuff config --

but it also shows it as a possible argument for stuff sync config

even though running cargo run -- sync config --test gives an unexpected argument error

Expected Behaviour

i would expect the --test option to not be suggested for stuff sync config

Additional Context

$ grep -C1 clap Cargo.lock
[[package]]
name = "clap"
version = "4.4.10"
# -- snip --
[[package]]
name = "clap_complete"
version = "4.4.4"

Debug Output

No response

[epage]

As I believe this is resolved with the native completions, I'm going to close this. If this was incorrect, let us know!

You can track stabilization at #3166