如何在不带“标志”包的情况下在Go中获取命令行参数？

I'm trying to write a GNU-style command-line parser for Go, since the flags package doesn't handle all these yet:

program -aAtGc --long-option-1 argument-to-1 --long-option-2 -- real-argument

Obviously, I don't want to use the flags package, since I'm trying to replace it. Is there any other way to get to the command line?

Nevermind.

package main

import (
    "fmt"
    "os"
)

func main() {
    args := os.Args
    fmt.Printf("%d
", len(args))

    for i := 0; i<len(args); i++ {
        fmt.Printf("%s
", args[i])
    }
}

The documentation is quite incomplete, though.