prefs.js cleaner for Windows v1.0

thanks @claustromaniac!

prefsCleaner.bat

@@ -0,0 +1,115 @@
+@ECHO OFF
+TITLE prefs.js cleaner
+
+REM ### prefs.js cleaner for Windows
+REM ## author: @claustromaniac
+REM ## version: 1.0
+
+SETLOCAL EnableDelayedExpansion
+:begin
+ECHO:
+ECHO:
+ECHO                 ########################################
+ECHO                 ####  prefs.js cleaner for Windows  ####
+ECHO                 ####    author: @claustromaniac     ####
+ECHO                 ####          version: 1.0          ####
+ECHO                 ########################################
+ECHO:
+CALL :message "This script should be run from your Firefox profile directory."
+ECHO   It will remove any entries from prefs.js that also exist in user.js.
+CALL :message "This will allow inactive preferences to be reset to their default values."
+ECHO   This Firefox profile shouldn't be in use during the process.
+CALL :message ""
+CHOICE /C SHE /N /M "Start [S] Help [H] Exit [E]"
+CLS
+IF ERRORLEVEL 3 ( EXIT /B )
+IF ERRORLEVEL 2 ( GOTO :showhelp )
+IF NOT EXIST "user.js" ( CALL :abort "user.js not found in the current directory." 30 )
+IF NOT EXIST "prefs.js" ( CALL :abort "prefs.js not found in the current directory." 30 )
+CALL :FFcheck
+CALL :message "Backing up prefs.js..."
+COPY /B /V /Y prefs.js "prefs-backup-!date:/=-!_!time::=.!.js"
+CALL :message "Cleaning prefs.js... 
+CALL :cleanup
+CLS
+CALL :message "All done."
+TIMEOUT 5 >nul
+EXIT /B
+
+REM ########## Abort Function ###########
+:abort
+CALL :message %1
+TIMEOUT %~2 >nul
+EXIT
+REM ########## Message Function #########
+:message
+ECHO:
+ECHO:  %~1
+ECHO:
+GOTO :EOF
+REM ####### Firefox Check Function ######
+:FFcheck
+TASKLIST /FI "IMAGENAME eq firefox.exe" 2>NUL | FIND /I /N "firefox.exe">NUL
+IF NOT ERRORLEVEL 1 ( 
+	CLS
+	CALL :message "Firefox is still running."
+	ECHO   If you're not currently using this profile you can continue, otherwise
+	ECHO:
+	ECHO   close Firefox first^^!
+	ECHO:
+	ECHO:
+	PAUSE
+	CLS
+	CALL :message "Resuming..."
+	TIMEOUT 5 /nobreak >nul
+)
+GOTO :EOF
+REM ######### Cleanup Function ##########
+:cleanup
+SETLOCAL DisableDelayedExpansion
+(
+	FOR /F "tokens=1,* delims=:" %%G IN ( 'FINDSTR /N "^" prefs.js' ) DO (
+		SET "_line=%%H"
+		SETLOCAL EnableDelayedExpansion
+		SET "_pref=!_line: =!"
+		IF /I "user_pref"=="!_pref:~0,9!" (
+			FOR /F "delims=," %%X IN ("!_pref!") DO ( SET "_pref=%%X" )
+			SET _pref=!_pref:"=""!
+			FIND /I "!_pref!" user.js >nul
+			IF ERRORLEVEL 1 (
+				ECHO:!_line!
+			)
+		) ELSE (
+			ECHO:!_line!
+		)
+		ENDLOCAL
+	)
+)>tempcleanedprefs
+ENDLOCAL
+MOVE /Y tempcleanedprefs prefs.js
+GOTO :EOF
+REM ############### Help ##################
+:showhelp
+MODE 80,34
+CLS
+CALL :message "This script creates a backup of your prefs.js file before doing anything." 
+ECHO   It should be safe, but you can follow these steps if something goes wrong:
+ECHO:
+CALL :message "  1. Make sure Firefox is closed."
+ECHO     2. Delete prefs.js in your profile folder.
+CALL :message "  3. Delete Invalidprefs.js if you have one in the same folder."
+ECHO     4. Rename or copy your latest backup to prefs.js.
+CALL :message "  5. Run Firefox and see if you notice anything wrong with it."
+ECHO     6. If you do notice something wrong, especially with your extensions,
+CALL :message "     and/or with the UI, go to about:support, and restart Firefox with"
+ECHO        add-ons disabled. Then, restart it again normally, and see if the
+CALL :message "     problems were solved."
+ECHO:
+CALL :message "If you are able to identify the cause of your issues, please bring it up"
+ECHO   on ghacks-user.js GitHub repository.
+ECHO:
+ECHO:
+PAUSE
+CLS
+GOTO :begin
+REM #####################################