@ECHO OFF
IF "%~1"=="" (
	CLS
	ECHO Demo script showing how CALL adds its own caret escape characters to arguments
	ECHO.
	ECHO Note the loss of the percent sign even when doublequoted
	ECHO Command         : ECHO "%%A^("
	ECHO Expected output : "%%A^("
	ECHO Actual output   : "%A^("
	ECHO.
	ECHO Command         : ECHO %%A^^(
	ECHO Expected output : A^(
	ECHO Actual output   : %A^(
	ECHO.
	ECHO Command: CALL :Subroutine "%%A^("
	CALL :Subroutine "%A^("
	ECHO Command: CALL "%%~f0" "%%A^("
	CALL "%~f0" "%A^("
	ECHO.
) ELSE (
	ECHO.
	ECHO Start of rerun, note the automatically added escape characters and loss of percent signs
	ECHO Command         : ECHO "%%~1"
	ECHO Expected output : "%%A^("
	ECHO Actual output   : "%~1"
	ECHO.
	ECHO Command: ECHO.%%~1
	ECHO Expected output : A(
	ECHO Actual output   : %~1
	ECHO End of rerun
	ECHO.
)
GOTO:EOF

:Subroutine
ECHO.
ECHO Start of Subroutine, note the automatically added escape characters and loss of percent signs
ECHO Command         : ECHO "%%~1"
ECHO Expected output : "%%A^("
ECHO Actual   output : "%~1"
ECHO.
ECHO Command         : ECHO.%%~1
ECHO Expected output : A(
ECHO Actual   output : %~1
ECHO End of Subroutine
ECHO.
GOTO:EOF