zsh: option with value breaks completions #369
Description
Having an flag that takes a value seems to break tab completion in zsh because the value is considered a subcommand.
I think this might be a clap bug but I'm having issues reproducing the exact example in clap, help to report this appropriately would be greatly appreciated!
The example works correctly with bash.
Code
use std::io::stdout;
use structopt::StructOpt;
use structopt::clap::Shell;
#[derive(Debug, StructOpt)]
pub struct Args {
#[structopt(short="f", long="foo")]
pub foo: Option<String>,
#[structopt(subcommand)]
pub subcommand: Option<SubCommand>,
}
#[derive(Debug, StructOpt)]
pub enum SubCommand {
Zsh,
Bash,
}
fn main() {
let args = Args::from_args();
eprintln!("{:?}", args);
if let Some(c) = args.subcommand {
let shell = match c {
SubCommand::Zsh => Shell::Zsh,
SubCommand::Bash => Shell::Bash,
};
Args::clap().gen_completions_to("completion-bug", shell, &mut stdout());
}
}Steps to reproduce
cargo run -- zsh > ~/.zsh_completions/_completion-bug # you might need to tweak this for your setup
zsh
# this works
completion-bug z<tab>
# this doesn't
completion-bug -f x z<tab>
# this does something unexpected
completion-bug -f z<tab>