code: func normalizeWorkdir(platform string, current string, requested string) (string, error) {
  	if platform == "" {
  		platform = "windows"
  	}
  	if platform == "windows" {
  		return normalizeWorkdirWindows(current, requested)
  	}
  	return normalizeWorkdirUnix(current, requested)
  }
docs: // normalizeWorkdir normalizes a user requested working directory in a
  // platform semantically consistent way.