Go でチルダ (~) 文字をホーム ディレクトリに展開するにはどうすればよいですか?

import (
    "os/user"
    "path/filepath"
    "strings"
)

func expandTilde(path string) string {
    if path == "~" {
        // Resolve "~" directly to the home directory
        usr, _ := user.Current()
        return usr.HomeDir
    } else if strings.HasPrefix(path, "~/") {
        // Expand paths starting with "~/"
        usr, _ := user.Current()
        return filepath.Join(usr.HomeDir, path[2:])
    }

    // Otherwise, leave the path untouched
    return path
}

func expandPath() {
    if path.IsAbs(*destination) {
        return
    }
    cwd, err := os.Getwd()
    checkError(err)
    *destination = path.Join(cwd, expandTilde(*destination))
}