FilePath completion not working with CompleteEnv

[windsource]

When using clap_complete with CompleteEnv the ValueHint::FilePath completion always produces a space after the path. This does not happen with the official example using the generator.

To reproduce:

use std::path::PathBuf;

use clap::{CommandFactory, Parser, ValueHint};
use clap_complete::CompleteEnv;

#[derive(Parser, Debug, PartialEq)]
#[command(name = "mycomp")]
struct Opt {
    #[arg(short, long, value_hint = ValueHint::FilePath)]
    file: Option<PathBuf>,
}

fn main() {
    CompleteEnv::with_factory(|| Opt::command()).complete();
    let opt = Opt::parse();

    println!("{opt:#?}");
}

Then source <(COMPLETE=zsh mycomp) and then use the completion with:

mycomp -f <TAB>

There is always a space after the first folder pressing TAB again to jump into the second level folder does not work.

Is there a general issue or I am using something wrong here?

[epage]

#5587 is our issue for handling o spaces. Whats interesting is that I don't think I'm seeing this specific problem in bash.

[windsource]

@epage You are right. The problem does not occur with bash but with zsh it does. Should I create an issue for that or comment on #5587?

[epage]

As its inconsistent, let's go ahead and have an issue. #5587 is about giving control over when it happens.

[windsource]

I have created an issue: #6178.