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@ECHO OFF
CLS

ECHO ------------------------------------------------------------------
ECHO Output "Normal"
ECHO ------------------------------------------------------------------
ECHO %0
ECHO %1
ECHO ------------------------------------------------------------------
ECHO %~d1
ECHO %~p1
ECHO %~n1
ECHO %~x1
ECHO Concat
ECHO %~d1%~p1%~n1%~x1
ECHO.
REM ********************************************************************************************
REM * CALL must be called with parameters!                                                     *
REM * But here the parameters are renumbered!                                                  *
REM *                                                                                          *
REM * The parameters are passed:                                                               *
REM ™   %0 = name of batch file                                                                *
REM ™   %1 = name oftext file                                                                  *
REM *                                                                                          *
REM * But, because the CALL command was originally there to call another BATCH file            *
REM * and first later in the sense of calling a subroutine has been extended,                  *
REM * the semantics of call remained the same                                                  *
REM *                                                                                          *
REM * Essentially, another batch file is called here:                                          *
REM * get_drive_path_name_extension_from_file.bat with the parameters %1 %2                    *
REM *                                                                                          *
REM * However, this call redistributes the parameters!                                         *
REM ™   %0 = subroutine name                                                                   *
REM =   %1 = the "previous" %0 = Batchfile name                                                *
REM ™   %2 = the "previous  %1 = Texfile name                                                  *
REM ********************************************************************************************
CALL :get_drive_path_name_extension_from_file %0 %1
GOTO :EOF

:get_drive_path_name_extension_from_file
ECHO ------------------------------------------------------------------
ECHO Output via "call"
ECHO ------------------------------------------------------------------
ECHO %0
ECHO %1
ECHO %2
ECHO ------------------------------------------------------------------
ECHO %~d2
ECHO %~p2
ECHO %~n2
ECHO %~x2
ECHO Concat
ECHO %~d2%~p2%~n2%~x2
GOTO :EOF