fix batch script asking for module tag if none is given

extract-elx-internals.bat

@@ -1,18 +1,26 @@
 @echo off
+SETLOCAL EnableDelayedExpansion
 echo %cmdcmdline% | findstr /i /c:"%~nx0" >NUL && set iscommandline=1
-echo %PSModulePath% | findstr "%USERPROFILE%" >NUL && set ispowershell=1
+echo %PSModulePath% | findstr /i /c:"%USERPROFILE%" >NUL && set ispowershell=1
 cd /D "%~dp0"
 
-echo.
+SET UserModuleTag=
+IF "%~1"=="" (
+    echo Module tag not specified.
+    set /p UserModuleTag=Insert module tag: 
+    IF "!UserModuleTag!"=="" (
+        echo Module tag is required to extract internals!
+        exit /b 1
+    ) ELSE (
+        echo Using module tag: !UserModuleTag!
+        set ModuleTag=!UserModuleTag!
+    )
+) ELSE (
+    echo Using module tag: %~1
+    set ModuleTag=%~1
+)
 
-@REM IF %* == "" echo "Module tag not specified."
-@REM     #set /p "ModuleTag=Insert module tag: "
-@REM ) ELSE (
-@REM     #set "ModuleTag=%*"
-@REM )
-
-@powershell -NoProfile -ExecutionPolicy Bypass -Command .\scripts\extract-elx-internals.ps1 -ModuleTag %*
-
-echo.
+@powershell -NoProfile -ExecutionPolicy Bypass -Command .\scripts\extract-elx-internals.ps1 -ModuleTag %ModuleTag%
 
 IF DEFINED iscommandline IF NOT DEFINED ispowershell pause
+ENDLOCAL