remove last directory folder from variable batch file command line

remove_last_folder.cmd

@echo off & setLocal EnableDelayedExpansion
set root_path="%~dp0"


set "remove_last_folder=%root_path:"=%"
::remove last back slash
set "remove_last_folder=%remove_last_folder:~0,-1%"
::last folder into var
set "last1=%remove_last_folder:\=" & set "lastfolder1=%"
::remove last folder from var
echo its "!remove_last_folder:%lastfolder1%=!"

pause