zsh completion candidates are offered only once for Sequence @Arguments.

A * must be prepended to the arg_spec for the @Argument. I just do not know how to determine in argumentSpecAndSetupScript if the ArgumentDefinition (ArgumentInfoV0 after the switch to ToolInfoV0) is for a var whose type is Sequence or not.

ArgumentParser version: main
Swift version:
swift-driver version: 1.120.5 Apple Swift version 6.1 (swiftlang-6.1.0.110.21 clang-1700.0.13.3)
Target: arm64-apple-macosx15.0

Checklist

• If possible, I've reproduced the issue using the main branch of this package
• I've searched for existing GitHub issues

Steps to Reproduce

Swift @Argument (sole argument or parameter for the Command):

@Argument(help: ArgumentHelp("App ID", valueName: "app-id"), completion: .custom(appIDCompletions))
var appIDs: [AppID]

No completion candidates are offered if completion candidates are requested at the end of the following zsh command line:

mycommand 123 4

Expected behavior

Completion candidates are offered.

Actual behavior

No completion candidates are offered.