goreturns don't add zero-value return values when formatting

[bruceauyeung]

i have a file pks1/pkg1.go in my codebase

package pkg1

import (
"errors"
"fmt"
)

func Test3() {
fmt.Println("pkg1")
}
func Test1() (string, error) {

return errors.New("aaa")

}

when i run goreturns pkg1.go, the output is:

D:\GoStudy\src\suselinks.us\gostudy\pkg1>goreturns pkg1.go
package pkg1

import (
"errors"
"fmt"
)

func Test3() {
fmt.Println("pkg1")
}
func Test1() (string, error) {

    return errors.New("aaa")

}

the output show goreturns didn't add zero-value return values at all when formatting

goreturns code commit id:6937071b7e1702a52f31a199c2ebb3796475494f
os : windows 7 64bit