这仅允许使用字母，数字和破折号:

This allows only letters, numbers, and dashes:

@echo off & setlocal

:top
set /P "name="Enter a name: "
setlocal enabledelayedexpansion
echo(!name!| findstr /i "[^a-z0-9-]" >NUL && (
    endlocal
    set /P "=Invalid name. " <NUL
    goto top
)

endlocal
echo Thank you %name%!
pause