realpath.exe for windows

realpath.go

// Git for Windows or git-bash contains a realpath.exe which is required by git code.editor
// However I'm using Git distribution from VS, which doesn't have it.
// Copying from Git for Windows isn't a good choice because it needs msys-2.0.dll
// This program offers similar function, which is enough for me.
// It won't resolve '~'. It works when path contains whitespaces.

package main

import (
	"fmt"
	"os"
	"path/filepath"
)

func main() {
	for _, p := range os.Args[1:] {
		rp, err := filepath.Abs(p)
		if err != nil {
			panic(err)
		}
		fmt.Println(rp)
	}
}