anchor.diff:  		SET "_line=%%H"
   		SETLOCAL EnableDelayedExpansion
   		IF /I "user_pref"=="!_line:~0,9!" (
  -			FOR /F "delims=," %%X IN ("!_line!") DO (SET "_pref=%%X")
  -			SET _pref=!_pref:"=""!
  -			FIND /I "!_pref!" user.js >nul
  -			IF ERRORLEVEL 1 (
  -				ECHO:!_line!
  +			FOR /F tokens^=2^ delims^=^" %%I IN ("!_line:.=\.!") DO (
  +				FINDSTR /R /C:"user_pref[ 	]*\([ 	]*[\"']%%I[\"'][ 	]*," user.js >nul
  +				IF ERRORLEVEL 1 (ECHO:!_line!)
   			)
   		) ELSE (
   			ECHO:!_line!
  
positive.code: ECHO:
  ECHO                 ########################################
  ECHO                 ####  prefs.js cleaner for Windows  ####
  ECHO                 ####    author: @claustromaniac     ####
  ECHO                 ####          version: 1.1          ####
  ECHO                 ########################################
  ECHO:
  CALL :message "This script should be run from your Firefox profile directory."
  
negative.code: 
  REM ### prefs.js cleaner for Windows
  REM ## author: @claustromaniac
  REM ## version: 1.2
  
  SETLOCAL EnableDelayedExpansion
  :begin
  