Use nil instead of len for arg check.

[jonreyna]

The fix in #155 for go test -v breaks SetArgs().

package main

import (
    "fmt"
    "strings"

    "github.com/spf13/cobra"
)

func main() {

    var cmdPrint = &cobra.Command{
        Use:   "print [string to print]",
        Short: "Print anything to the screen",
        Long: `print is for printing anything back to the screen.
        For many years people have printed back to the screen.
        `,
        Run: func(cmd *cobra.Command, args []string) {
            fmt.Println("Print: " + strings.Join(args, " "))
        },
    }

    cmdPrint.SetArgs([]string{})

    cmdPrint.Execute()
}

meddling_monk at BorgCube in /media/meddling_monk/Bear/dev/golang/src/github.com/JReyLBC/testCobra 
$ go run test_cobra1.go abc
Print: abc

Checking if args is nil, instead of having a zero length, honors the use of SetArgs(), and doesn't break go test -v.

[CLAassistant]

All committers have accepted the CLA.

[spf13]

Thanks for the fix. Merged as 1ef0913