How to do completion properly with clap derive?

[HuakunShen]

I am following this tutorial https://github.com/clap-rs/clap/blob/master/clap_complete/examples/completion-derive.rs

I could run the example, but I can't run the same script in my project, does it require some specific dependencies?

Although the example works, it only works for subcommand. Flag completion doesn't work for me.

How can I make completion work properly? Did not find a similar discussion yet.

Environment:

• Ubuntu 20.04 and MacOS
• zsh

[epage]

but I can't run the same script in my project,

What do you mean by this? Was there a compiler error? Or some kind of runtime error? If so, could you include it?

[HuakunShen]

I got the completion scription generation working.

And I noticed that in order to get flag tag completion working, I have to first type --, then tab.

Is it possible to tab complete the flags without --?

[epage]

That is likely left up to your shell. #3166 will shift it from the shell to clap.