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Rust Version

1.80.0

Clap Version

4.5.11

Minimal reproducible code

use clap::*;// 4.5.11#[derive(Parser)]structTopLevel{first:String,#[command(flatten)]second:Inner,}// *** Note: the user can specify *either* a positional argument *or* a named argument#[derive(Args)]#[group(required =true, multiple =false)]structInner{value:Option<String>,#[arg(long)]path:Option<String>,}fnmain(){letmut cmd =TopLevel::command();    _ = cmd.print_long_help();let parsed =TopLevel::parse_from(["test","a","b"]);assert_eq!(parsed.first,"a");assert_eq!(parsed.second.value,"b");}

Steps to reproduce the bug with the above code

Run on play.rust-lang.org

Actual Behaviour

Usage: playground <VALUE|--path <PATH>> <FIRST>

even though the assertions show that theFIRST argument is in fact getting parsed first, as desired.

Expected Behaviour

Usage: playground <FIRST> <VALUE|--path <PATH>>

It does work to put the flag argument after the first positional argument, so this isn't even wrong, even if it's a little unconventional.

Additional Context

I tried manually specifyingindex on the arguments, but it did not affect the help output.

Debug Output

No response