Attribute Macro bitbar_derive::command

#[command]

Registers a subcommand that you can run from a menu item’s command.

Commands should have the signature fn(impl Iterator<Item = OsString>) -> Result<(), Error>, where Error is any type that implements Display. If a command errors, bitbar will attempt to send a macOS notification containing the error message.

Using this requires a main function annotated with bitbar::main.