(Tested using latest version of goimports as of right now, commit golang/tools@477d3b9, go version go1.6.2 darwin/amd64.)

Given the following .go file input:

package main

import (
    "encoding/binary"

    // Some comment.
    "fmt"
)

func main() {
    fmt.Println()
}

goimports will try to remove "encoding/binary" and result in the following invalid Go code:

package main

import

// Some comment.
"fmt"

func main() {
    fmt.Println()
}

It should result in valid Go code (but I don't know how it should deal with the comment, exactly).