Zsh shell completion doesn't work for flags/args that come after positional values

[gbrlsnchs]

Discussed in #4648

^{Originally posted by gbrlsnchs January 18, 2023}
One practical example is the tool I wrote using clap, park. When I mix values and flags/args, the shell completion no longer works.

This works:

$ park --<Tab>

This doesn't:

$ park something --<Tab>

And despite the completion not working, flags/args that come after values effectively work when run, so... am I missing something? I just want to confirm whether it's a misconfiguration by my part, otherwise I'll proceed to open an issue.

[epage]

Could you provide a complete, minimal reproduction case, meaning a program that combined with those completion examples will show the problem?