use delayedexpansion

hazedumper/generate.bat

@@ -1,4 +1,5 @@
-@ECHO off
+@ECHO OFF
+SETLOCAL ENABLEDELAYEDEXPANSION
 
 IF NOT EXIST .\hazedumper.exe (
     ECHO Download latest release of hazedumper
@@ -15,15 +16,15 @@ IF NOT EXIST .\hazedumper.exe (
     :: Unzip the file
     PowerShell -NoLogo -NoProfile -Command "& { $shell = New-Object -COM" ^
         "Shell.Application; $target = $shell.NameSpace('%CD%'); $zip =" ^
-    "$shell.NameSpace('%CD%\%dir%.zip'); $target.CopyHere($zip.Items(), 16); }" ^
-    "%dir%"
+        "$shell.NameSpace('%CD%\!dir!.zip'); $target.CopyHere($zip.Items()," ^
+        "16); }" "!dir!"
 
     :: Move the binary to the current directory
-    MOVE .\%dir%\*.exe .\
+    MOVE .\!dir!\*.exe .\
 
     :: Delete unnecessary file and directory
-    DEL %dir%.zip
-    RMDIR %dir%\
+    DEL !dir!.zip
+    RMDIR !dir!\
 )
 
 IF NOT EXIST .\config.json (

run.bat

@@ -1,11 +1,12 @@
-@ECHO off
+@ECHO OFF
+SETLOCAL ENABLEDELAYEDEXPANSION
 
 :: Variables
 SET "pipR=pip install -r .\requirements.txt"
 SET "py=python.exe"
 
 :: Check python installation
-%py% --version > NUL
+!py! --version > NUL
 
 :: Clean potential error or python version
 CLS
@@ -19,19 +20,19 @@ IF ERRORLEVEL 1 (
     ECHO Download and installation of dependencies...
 
     :: Location of Python
-    SET "py=%LOCALAPPDATA%\Microsoft\WindowsApps\%py%"
+    SET "py=%LOCALAPPDATA%\Microsoft\WindowsApps\!py!"
 
     :: Update pip
-    %py% -m pip install --upgrade pip
+    !py! -m pip install --upgrade pip
 
     :: Install dependencies
-    %py% -m %pipR%
+    !py! -m !pipR!
 ) ELSE (
     :: Check dependencies
-    %py% -m %pipR% > NUL
+    !py! -m !pipR! > NUL
 )
 
 :: Run app
-%py% .\main.py
+!py! .\main.py
 
 EXIT /b