diff --git a/prefsCleaner.bat b/prefsCleaner.bat
index 06d78b6..3c73271 100644
--- a/prefsCleaner.bat
+++ b/prefsCleaner.bat
@@ -1,134 +1,134 @@
-@ECHO OFF & SETLOCAL DisableDelayedExpansion
-TITLE prefs.js cleaner
-
-REM ## prefs.js cleaner for Windows
-REM ## /!\ This script is a vendored/adapted version of Arkenfox own prefsCleaner.bat /!\
-REM ## author: @claustromaniac
-REM ## version: 2.7
-
-CD /D "%~dp0"
-
-IF /I "%~1"=="-unattended" (SET _ua=1)
-
-:begin
-ECHO:
-ECHO:
-ECHO                 ########################################
-ECHO                 ####  prefs.js cleaner for Windows  ####
-ECHO                 ####        by claustromaniac       ####
-ECHO                 ####              v2.7              ####
-ECHO                 ########################################
-ECHO:
-CALL :message "This script should be run from your Thunderbird 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 Thunderbird profile shouldn't be in use during the process.
-CALL :message ""
-TIMEOUT 1 /nobreak >nul
-
-IF NOT DEFINED _ua (
-	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 :strlenCheck
-CALL :FFcheck
-
-CALL :message "Backing up prefs.js..."
-FOR /F "delims=" %%# IN ('powershell get-date -format "{yyyyMMdd_HHmmss}"') DO @SET ldt=%%#
-COPY /B /V /Y prefs.js "prefs-backup-%ldt%.js"
-
-CALL :message "Cleaning prefs.js..."
-CALL :cleanup
-CALL :message "All done!"
-TIMEOUT 5 >nul
-ENDLOCAL
-EXIT /B
-
-REM ########## Abort Function ###########
-:abort
-CALL :message %1
-TIMEOUT %~2 >nul
-EXIT
-REM ########## Message Function #########
-:message
-ECHO:
-ECHO:  %~1
-ECHO:
-GOTO :EOF
-REM ### string length Check Function ####
-:strlenCheck
-SET /a cnt=0
-setlocal ENABLEDELAYEDEXPANSION
-FOR /F "tokens=1,* delims=:" %%G IN ('FINDSTR /N "^" prefs.js') DO (
-	ECHO:%%H >nul
-	SET /a cnt += 1
-	IF /I "%%G" NEQ "!cnt!" (
-		ECHO:
-		CALL :message "ERROR: line !cnt! in prefs.js is too long."
-		(CALL :abort "Aborting ..." 30)
-	)
-)
-endlocal
-GOTO :EOF
-REM ####### Thunderbird Check Function ######
-:FFcheck
-TASKLIST /FI "IMAGENAME eq thunderbird.exe" 2>NUL | FIND /I /N "thunderbird.exe">NUL
-IF NOT ERRORLEVEL 1 (
-	CLS
-	CALL :message "Thunderbird is still running."
-	ECHO   If you're not currently using this profile you can continue, otherwise
-	CALL :message "close Thunderbird first!"
-	ECHO:
-	PAUSE
-	CLS
-	CALL :message "Resuming..."
-	TIMEOUT 5 /nobreak >nul
-)
-GOTO :EOF
-REM ######### Cleanup Function ##########
-:cleanup
-FOR /F tokens^=2^ delims^=^'^" %%G IN ('FINDSTR /R /C:"^[^\"']*user_pref[ 	]*\([ 	]*[\"'][^\"']*[\"'][ 	]*," user.js') DO (
-	IF NOT ""=="%%G" (SET "[%%G]=1")
-)
-(
-	FOR /F "tokens=1,* delims=:" %%G IN ('FINDSTR /N "^" prefs.js') DO (
-		IF ""=="%%H" (
-			ECHO:
-		) ELSE (
-			FOR /F tokens^=1^,2^ delims^=^"^' %%I IN ("%%H") DO (
-				IF NOT DEFINED [%%J] (ECHO:%%H)
-			)
-		)
-	)
-)>tempcleanedprefs
-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 Thunderbird 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 Thunderbird 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 Thunderbird 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 thunderbird user.js GitHub repository.
-ECHO:
-ECHO:
-PAUSE
-CLS
-GOTO :begin
-REM #####################################
+@ECHO OFF & SETLOCAL DisableDelayedExpansion
+TITLE prefs.js cleaner
+
+REM ## prefs.js cleaner for Windows
+REM ## /!\ This script is a vendored/adapted version of Arkenfox own prefsCleaner.bat /!\
+REM ## author: @claustromaniac
+REM ## version: 2.7
+
+CD /D "%~dp0"
+
+IF /I "%~1"=="-unattended" (SET _ua=1)
+
+:begin
+ECHO:
+ECHO:
+ECHO                 ########################################
+ECHO                 ####  prefs.js cleaner for Windows  ####
+ECHO                 ####        by claustromaniac       ####
+ECHO                 ####              v2.7              ####
+ECHO                 ########################################
+ECHO:
+CALL :message "This script should be run from your Thunderbird 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 Thunderbird profile shouldn't be in use during the process.
+CALL :message ""
+TIMEOUT 1 /nobreak >nul
+
+IF NOT DEFINED _ua (
+	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 :strlenCheck
+CALL :FFcheck
+
+CALL :message "Backing up prefs.js..."
+FOR /F "delims=" %%# IN ('powershell get-date -format "{yyyyMMdd_HHmmss}"') DO @SET ldt=%%#
+COPY /B /V /Y prefs.js "prefs-backup-%ldt%.js"
+
+CALL :message "Cleaning prefs.js..."
+CALL :cleanup
+CALL :message "All done!"
+TIMEOUT 5 >nul
+ENDLOCAL
+EXIT /B
+
+REM ########## Abort Function ###########
+:abort
+CALL :message %1
+TIMEOUT %~2 >nul
+EXIT
+REM ########## Message Function #########
+:message
+ECHO:
+ECHO:  %~1
+ECHO:
+GOTO :EOF
+REM ### string length Check Function ####
+:strlenCheck
+SET /a cnt=0
+setlocal ENABLEDELAYEDEXPANSION
+FOR /F "tokens=1,* delims=:" %%G IN ('FINDSTR /N "^" prefs.js') DO (
+	ECHO:%%H >nul
+	SET /a cnt += 1
+	IF /I "%%G" NEQ "!cnt!" (
+		ECHO:
+		CALL :message "ERROR: line !cnt! in prefs.js is too long."
+		(CALL :abort "Aborting ..." 30)
+	)
+)
+endlocal
+GOTO :EOF
+REM ####### Thunderbird Check Function ######
+:FFcheck
+TASKLIST /FI "IMAGENAME eq thunderbird.exe" 2>NUL | FIND /I /N "thunderbird.exe">NUL
+IF NOT ERRORLEVEL 1 (
+	CLS
+	CALL :message "Thunderbird is still running."
+	ECHO   If you're not currently using this profile you can continue, otherwise
+	CALL :message "close Thunderbird first!"
+	ECHO:
+	PAUSE
+	CLS
+	CALL :message "Resuming..."
+	TIMEOUT 5 /nobreak >nul
+)
+GOTO :EOF
+REM ######### Cleanup Function ##########
+:cleanup
+FOR /F tokens^=2^ delims^=^'^" %%G IN ('FINDSTR /R /C:"^[^\"']*user_pref[ 	]*\([ 	]*[\"'][^\"']*[\"'][ 	]*," user.js') DO (
+	IF NOT ""=="%%G" (SET "[%%G]=1")
+)
+(
+	FOR /F "tokens=1,* delims=:" %%G IN ('FINDSTR /N "^" prefs.js') DO (
+		IF ""=="%%H" (
+			ECHO:
+		) ELSE (
+			FOR /F tokens^=1^,2^ delims^=^"^' %%I IN ("%%H") DO (
+				IF NOT DEFINED [%%J] (ECHO:%%H)
+			)
+		)
+	)
+)>tempcleanedprefs
+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 Thunderbird 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 Thunderbird 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 Thunderbird 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 thunderbird user.js GitHub repository.
+ECHO:
+ECHO:
+PAUSE
+CLS
+GOTO :begin
+REM #####################################
diff --git a/updater.bat b/updater.bat
index 80fa7ab..d34b9b0 100644
--- a/updater.bat
+++ b/updater.bat
@@ -1,324 +1,324 @@
-@ECHO OFF & SETLOCAL EnableDelayedExpansion
-TITLE thunderbird user.js updater
-
-REM ## thunderbird user.js updater for Windows
-REM ## /!\ This script is a vendored/adapted version of Arkenfox own updater.bat /!\
-REM ## author: @claustromaniac
-REM ## version: 4.19
-REM ## instructions: https://github.com/arkenfox/user.js/wiki/5.1-Updater-[Options]#-windows
-
-SET v=4.19
-
-VERIFY ON
-CD /D "%~dp0"
-SET _myname=%~n0
-SET _myparams=%*
-
-:parse
-IF "%~1"=="" (GOTO endparse)
-IF /I "%~1"=="-unattended" (SET _ua=1)
-IF /I "%~1"=="-log" (SET _log=1)
-IF /I "%~1"=="-logp" (SET _log=1 & SET _logp=1)
-IF /I "%~1"=="-multioverrides" (SET _multi=1)
-IF /I "%~1"=="-merge" (SET _merge=1)
-IF /I "%~1"=="-updatebatch" (SET _updateb=1)
-IF /I "%~1"=="-singlebackup" (SET _singlebackup=1)
-IF /I "%~1"=="-esr" (SET _esr=1)
-SHIFT
-GOTO parse
-:endparse
-
-FOR /F %%i IN ('PowerShell -Command "[Enum]::GetNames([Net.SecurityProtocolType]) -contains 'Tls12'"') DO (
-	IF "%%i" == "False" (
-		CALL :message "Your PowerShell version doesn't support TLS1.2 ^!"
-		ECHO:  Instructions to update PowerShell are on the arkenfox wiki
-		PAUSE
-		EXIT
-	)
-)
-
-IF DEFINED _updateb (
-	REM The normal flow here goes from phase 1 to phase 2 and then phase 3.
-	IF NOT "!_myname:~0,9!"=="[updated]" (
-		IF EXIST "[updated]!_myname!.bat" (
-			REM ## Phase 3 ##: The new script, with the original name, will:
-			REM 	* Delete the [updated]*.bat and *.bat.old scripts
-			REM 	* Begin the normal routine
-			FC "[updated]!_myname!.bat" "!_myname!.bat.old" >nul
-			IF NOT "!errorlevel!"=="0" (
-				CALL :message "Script updated to version !v!"
-				TIMEOUT 3 >nul
-			)
-			REN "[updated]!_myname!.bat" "[updated]!_myname!.bat.old"
-			DEL /F "!_myname!.bat.old" "[updated]!_myname!.bat.old"
-			GOTO begin
-		)
-		REM ## Phase 1 ##
-		REM 	* Download new batch and name it [updated]*.bat
-		REM 	* Start that script in a new CMD window
-		REM 	* Exit
-		CALL :message "Updating script..."
-		REM Uncomment the next line and comment out the PowerShell call for testing.
-		REM COPY /B /Y "!_myname!.bat" "[updated]!_myname!.bat" >nul
-		CALL :psdownload https://raw.githubusercontent.com/HorlogeSkynet/thunderbird-user.js/master/updater.bat "[updated]!_myname!.bat"
-		IF EXIST "[updated]!_myname!.bat" (
-			START /min CMD /C "[updated]!_myname!.bat" !_myparams!
-		) ELSE (
-			CALL :message "Failed. Make sure PowerShell is allowed internet access."
-			TIMEOUT 120 >nul
-		)
-	) ELSE (
-		IF "!_myname!"=="[updated]" (
-			CALL :message "The [updated] label is reserved. Rename this script and try again."
-			TIMEOUT 300 >nul
-		) ELSE (
-			REM ## Phase 2 ##: The [updated]*.bat script will:
-			REM 	* Rename the old script and make a copy of itself with the original name.
-			REM 	* Run that copy in a new CMD instance
-			REM 	* Exit
-			IF EXIST "!_myname:~9!.bat" ( REN "!_myname:~9!.bat" "!_myname:~9!.bat.old" )
-			COPY /B /Y "!_myname!.bat" "!_myname:~9!.bat"
-			START CMD /C "!_myname:~9!.bat" !_myparams!
-		)
-	)
-	EXIT /B
-)
-
-:begin
-CLS
-ECHO:
-ECHO:
-ECHO:                ########################################
-ECHO:                ####  user.js Updater for Windows   ####
-ECHO:                ####       by claustromaniac        ####
-ECHO:                ####             v!v!              ####
-ECHO:                ########################################
-ECHO:
-SET /A "_line=0"
-IF NOT EXIST user.js (
-	CALL :message "user.js not detected in the current directory."
-) ELSE (
-	FOR /F "skip=1 tokens=1,* delims=:" %%G IN (user.js) DO (
-		SET /A "_line+=1"
-		IF !_line! GEQ 4 (GOTO exitloop)
-		IF !_line! EQU 1 (SET _name=%%H)
-		IF !_line! EQU 2 (SET _date=%%H)
-		IF !_line! EQU 3 (SET _version=%%G)
-	)
-	:exitloop
-	IF NOT "!_name!"=="" (
-		SET "_tempvar="
-		IF /I NOT "!_name!"=="!_name:ghacks=!" SET _tempvar=1
-		IF /I NOT "!_name!"=="!_name:arkenfox=!" SET _tempvar=1
-		IF !_tempvar! EQU 1 (
-			CALL :message "!_name! !_version:~2!,!_date!"
-		) ELSE (CALL :message "Current user.js version not recognised.")
-	) ELSE (CALL :message "Current user.js version not recognised.")
-)
-ECHO:
-IF NOT DEFINED _ua (
-	CALL :message "This batch should be run from your Thunderbird profile directory."
-	ECHO:  It will download the latest version of thunderbird user.js from github and then
-	CALL :message "append any of your own changes from user-overrides.js to it."
-	CALL :message "Visit the wiki for more detailed information."
-	ECHO:
-	TIMEOUT 1 /nobreak >nul
-	CHOICE /C SHE /N /M "Start [S] Help [H] Exit [E]"
-	CLS
-	IF ERRORLEVEL 3 (EXIT /B)
-	IF ERRORLEVEL 2 (GOTO :showhelp)
-)
-IF DEFINED _log (
-	CALL :log >>user.js-update-log.txt 2>&1
-	IF DEFINED _logp (START user.js-update-log.txt)
-	EXIT /B
-	:log
-	SET _log=2
-	ECHO:##################################################################
-	ECHO:  %date%, %time%
-)
-IF EXIST user.js.new (DEL /F "user.js.new")
-CALL :message "Retrieving latest user.js file from github repository..."
-CALL :psdownload https://raw.githubusercontent.com/HorlogeSkynet/thunderbird-user.js/master/user.js "user.js.new"
-IF EXIST user.js.new (
-	IF DEFINED _esr (
-		CALL :message "Activating ESR section..."
-		CALL :activate user.js.new ".x still uses all the following prefs"
-	)
-	IF DEFINED _multi (
-		FORFILES /P user.js-overrides /M *.js >nul 2>&1
-		IF NOT ERRORLEVEL 1 (
-			IF DEFINED _merge (
-				CALL :message "Merging..."
-				COPY /B /Y user.js-overrides\*.js user-overrides-merged.js
-				CALL :merge user-overrides-merged.js
-				COPY /B /Y user.js.new+user-overrides-merged.js user.js.new
-				CALL :merge user.js.new
-			) ELSE (
-				CALL :message "Appending..."
-				COPY /B /Y user.js.new+"user.js-overrides\*.js" user.js.new
-			)
-		) ELSE (CALL :message "No override files found.")
-	) ELSE (
-		IF EXIST "user-overrides.js" (
-			COPY /B /Y user.js.new+"user-overrides.js" "user.js.new"
-			IF DEFINED _merge (
-				CALL :message "Merging user-overrides.js..."
-				CALL :merge user.js.new
-			) ELSE (
-				CALL :message "user-overrides.js appended."
-			)
-		) ELSE (CALL :message "user-overrides.js not found.")
-	)
-	IF EXIST user.js (
-		FC user.js.new user.js >nul && SET "_changed=false" || SET "_changed=true"
-	)
-	IF "!_changed!"=="true" (
-		CALL :message "Backing up..."
-		IF DEFINED _singlebackup (
-			MOVE /Y user.js user.js.bak >nul
-		) ELSE (
-			FOR /F "delims=" %%# IN ('powershell get-date -format "{yyyyMMdd_HHmmss}"') DO @SET ldt=%%#
-			MOVE /Y user.js "user-backup-!ldt!.js" >nul
-		)
-		REN user.js.new user.js
-		CALL :message "Update complete."
-	) ELSE (
-		IF "!_changed!"=="false" (
-			DEL /F user.js.new >nul
-			CALL :message "Update completed without changes."
-		) ELSE (
-			REN user.js.new user.js
-			CALL :message "Update complete."
-			SET "_changed=true"
-		)
-	)
-) ELSE (
-	CALL :message "Update failed. Make sure PowerShell is allowed internet access."
-	ECHO:  No changes were made.
-)
-IF NOT DEFINED _log (
-	IF NOT DEFINED _ua (
-		IF EXIST prefsCleaner.bat (
-			IF "!_changed!"=="true" (
-				CALL :message "Would you like to run the prefsCleaner now?"
-				CHOICE /C YN /N /M "(Y/N) "
-				IF "1"=="!errorlevel!" ( START "" cmd.exe /C "prefsCleaner.bat" )
-			) ELSE (PAUSE)
-		) ELSE (PAUSE)
-	)
-)
-EXIT /B
-
-::::::::::::::: Message :::::::::::::::
-:message
-SETLOCAL DisableDelayedExpansion
-IF NOT "2"=="%_log%" (ECHO:)
-ECHO:  %~1
-IF NOT "2"=="%_log%" (ECHO:)
-ENDLOCAL
-GOTO :EOF
-
-::::::::::::::: Download :::::::::::::::
-:psdownload
-(
-	PowerShell -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; (New-Object Net.WebClient).DownloadFile('%~1', '%~2')"
-) >nul 2>&1
-GOTO :EOF
-
-::::::::::::::: Activate Section :::::::::::::::
-:activate
-:: arg1 = file
-:: arg2 = line substring
-SETLOCAL DisableDelayedExpansion
-(
-	FOR /F "tokens=1,* delims=:" %%G IN ('FINDSTR /N "^" "%~1"') DO (
-		SET "_temp=%%H"
-		SETLOCAL EnableDelayedExpansion
-		IF "!_temp:%~2=!"=="!_temp!" (
-			ENDLOCAL & ECHO:%%H
-		) ELSE (
-			ECHO://!_temp:~2!
-			ENDLOCAL
-		)
-	)
-)>updatertempfile
-MOVE /Y updatertempfile "%~1" >nul
-ENDLOCAL
-GOTO :EOF
-
-::::::::::::::: Merge :::::::::::::::
-:merge
-SETLOCAL DisableDelayedExpansion
-FOR /F tokens^=2^,^*^ delims^=^'^" %%G IN ('FINDSTR /R /C:"^user_pref[ 	]*\([ 	]*[\"'].*[\"'][ 	]*,.*\)[ 	]*;" "%~1"') DO (SET "[%%G]=%%H")
-FOR /F tokens^=2^,^*^ delims^=^' %%G IN ('FINDSTR /R /C:"^//// --- comment-out --- '[^'][^']*'.*" "%~1"') DO (SET "__unset__%%G=1")
-(
-	FOR /F "tokens=1,* delims=:" %%I IN ('FINDSTR /N "^" "%~1"') DO (
-		SET "_temp=%%J"
-		SETLOCAL EnableDelayedExpansion
-		IF NOT "!_temp:~0,9!"=="user_pref" (
-			ENDLOCAL & ECHO:%%J
-		) ELSE (
-			IF "!_temp:;=!"=="!_temp!" (
-				ENDLOCAL & ECHO:%%J
-			) ELSE (
-				ENDLOCAL
-				FOR /F tokens^=2^ delims^=^'^" %%K IN ("%%J") DO (
-					IF NOT "_user.js.parrot"=="%%K" (
-						IF DEFINED __unset__%%K (
-							ECHO://%%J
-						) ELSE (
-							IF DEFINED [%%K] (
-								SETLOCAL EnableDelayedExpansion
-								FOR /F "delims=" %%L IN ("![%%K]!") DO (
-									ENDLOCAL & ECHO:user_pref("%%K"%%L
-									SET "[%%K]="
-								)
-							)
-						)
-					) ELSE (ECHO:%%J)
-				)
-			)
-		)
-	)
-)>updatertempfile
-MOVE /Y updatertempfile "%~1" >nul
-ENDLOCAL
-GOTO :EOF
-
-::::::::::::::: Help :::::::::::::::
-:showhelp
-MODE 80,54
-CLS
-CALL :message "Available arguments (case-insensitive):"
-CALL :message "  -esr"
-ECHO:     Activate ESR related preferences
-CALL :message "  -log"
-ECHO:     Write the console output to a logfile (user.js-update-log.txt)
-CALL :message "  -logP"
-ECHO:     Like -log, but also open the logfile after updating.
-CALL :message "  -merge"
-ECHO:     Merge overrides instead of appending them. Single-line comments and
-ECHO:     _user.js.parrot lines are appended normally. Overrides for inactive
-ECHO:     user.js prefs will be appended. When -Merge and -MultiOverrides are used
-ECHO:     together, a user-overrides-merged.js file is also generated in the root
-ECHO:     directory for quick reference. It contains only the merged data from
-ECHO:     override files and can be safely discarded after updating, or used as the
-ECHO:     new user-overrides.js. When there are conflicting records for the same
-ECHO:     pref, the value of the last one declared will be used. Visit the wiki
-ECHO:     for usage examples and more detailed information.
-CALL :message "  -multiOverrides"
-ECHO:     Use any and all .js files in a user.js-overrides sub-folder as overrides
-ECHO:     instead of the default user-overrides.js file. Files are appended in
-ECHO:     alphabetical order.
-CALL :message "  -unattended"
-ECHO:     Run without user input.
-CALL :message "  -singleBackup"
-ECHO:     Use a single backup file and overwrite it on new updates, instead of
-ECHO:     cumulative backups. This was the default behaviour before v4.3.
-CALL :message "  -updateBatch"
-ECHO:     Update the script itself on execution, before the normal routine.
-CALL :message ""
-PAUSE
-MODE 80,25
-GOTO :begin
+@ECHO OFF & SETLOCAL EnableDelayedExpansion
+TITLE thunderbird user.js updater
+
+REM ## thunderbird user.js updater for Windows
+REM ## /!\ This script is a vendored/adapted version of Arkenfox own updater.bat /!\
+REM ## author: @claustromaniac
+REM ## version: 4.19
+REM ## instructions: https://github.com/arkenfox/user.js/wiki/5.1-Updater-[Options]#-windows
+
+SET v=4.19
+
+VERIFY ON
+CD /D "%~dp0"
+SET _myname=%~n0
+SET _myparams=%*
+
+:parse
+IF "%~1"=="" (GOTO endparse)
+IF /I "%~1"=="-unattended" (SET _ua=1)
+IF /I "%~1"=="-log" (SET _log=1)
+IF /I "%~1"=="-logp" (SET _log=1 & SET _logp=1)
+IF /I "%~1"=="-multioverrides" (SET _multi=1)
+IF /I "%~1"=="-merge" (SET _merge=1)
+IF /I "%~1"=="-updatebatch" (SET _updateb=1)
+IF /I "%~1"=="-singlebackup" (SET _singlebackup=1)
+IF /I "%~1"=="-esr" (SET _esr=1)
+SHIFT
+GOTO parse
+:endparse
+
+FOR /F %%i IN ('PowerShell -Command "[Enum]::GetNames([Net.SecurityProtocolType]) -contains 'Tls12'"') DO (
+	IF "%%i" == "False" (
+		CALL :message "Your PowerShell version doesn't support TLS1.2 ^!"
+		ECHO:  Instructions to update PowerShell are on the arkenfox wiki
+		PAUSE
+		EXIT
+	)
+)
+
+IF DEFINED _updateb (
+	REM The normal flow here goes from phase 1 to phase 2 and then phase 3.
+	IF NOT "!_myname:~0,9!"=="[updated]" (
+		IF EXIST "[updated]!_myname!.bat" (
+			REM ## Phase 3 ##: The new script, with the original name, will:
+			REM 	* Delete the [updated]*.bat and *.bat.old scripts
+			REM 	* Begin the normal routine
+			FC "[updated]!_myname!.bat" "!_myname!.bat.old" >nul
+			IF NOT "!errorlevel!"=="0" (
+				CALL :message "Script updated to version !v!"
+				TIMEOUT 3 >nul
+			)
+			REN "[updated]!_myname!.bat" "[updated]!_myname!.bat.old"
+			DEL /F "!_myname!.bat.old" "[updated]!_myname!.bat.old"
+			GOTO begin
+		)
+		REM ## Phase 1 ##
+		REM 	* Download new batch and name it [updated]*.bat
+		REM 	* Start that script in a new CMD window
+		REM 	* Exit
+		CALL :message "Updating script..."
+		REM Uncomment the next line and comment out the PowerShell call for testing.
+		REM COPY /B /Y "!_myname!.bat" "[updated]!_myname!.bat" >nul
+		CALL :psdownload https://raw.githubusercontent.com/HorlogeSkynet/thunderbird-user.js/master/updater.bat "[updated]!_myname!.bat"
+		IF EXIST "[updated]!_myname!.bat" (
+			START /min CMD /C "[updated]!_myname!.bat" !_myparams!
+		) ELSE (
+			CALL :message "Failed. Make sure PowerShell is allowed internet access."
+			TIMEOUT 120 >nul
+		)
+	) ELSE (
+		IF "!_myname!"=="[updated]" (
+			CALL :message "The [updated] label is reserved. Rename this script and try again."
+			TIMEOUT 300 >nul
+		) ELSE (
+			REM ## Phase 2 ##: The [updated]*.bat script will:
+			REM 	* Rename the old script and make a copy of itself with the original name.
+			REM 	* Run that copy in a new CMD instance
+			REM 	* Exit
+			IF EXIST "!_myname:~9!.bat" ( REN "!_myname:~9!.bat" "!_myname:~9!.bat.old" )
+			COPY /B /Y "!_myname!.bat" "!_myname:~9!.bat"
+			START CMD /C "!_myname:~9!.bat" !_myparams!
+		)
+	)
+	EXIT /B
+)
+
+:begin
+CLS
+ECHO:
+ECHO:
+ECHO:                ########################################
+ECHO:                ####  user.js Updater for Windows   ####
+ECHO:                ####       by claustromaniac        ####
+ECHO:                ####             v!v!              ####
+ECHO:                ########################################
+ECHO:
+SET /A "_line=0"
+IF NOT EXIST user.js (
+	CALL :message "user.js not detected in the current directory."
+) ELSE (
+	FOR /F "skip=1 tokens=1,* delims=:" %%G IN (user.js) DO (
+		SET /A "_line+=1"
+		IF !_line! GEQ 4 (GOTO exitloop)
+		IF !_line! EQU 1 (SET _name=%%H)
+		IF !_line! EQU 2 (SET _date=%%H)
+		IF !_line! EQU 3 (SET _version=%%G)
+	)
+	:exitloop
+	IF NOT "!_name!"=="" (
+		SET "_tempvar="
+		IF /I NOT "!_name!"=="!_name:ghacks=!" SET _tempvar=1
+		IF /I NOT "!_name!"=="!_name:arkenfox=!" SET _tempvar=1
+		IF !_tempvar! EQU 1 (
+			CALL :message "!_name! !_version:~2!,!_date!"
+		) ELSE (CALL :message "Current user.js version not recognised.")
+	) ELSE (CALL :message "Current user.js version not recognised.")
+)
+ECHO:
+IF NOT DEFINED _ua (
+	CALL :message "This batch should be run from your Thunderbird profile directory."
+	ECHO:  It will download the latest version of thunderbird user.js from github and then
+	CALL :message "append any of your own changes from user-overrides.js to it."
+	CALL :message "Visit the wiki for more detailed information."
+	ECHO:
+	TIMEOUT 1 /nobreak >nul
+	CHOICE /C SHE /N /M "Start [S] Help [H] Exit [E]"
+	CLS
+	IF ERRORLEVEL 3 (EXIT /B)
+	IF ERRORLEVEL 2 (GOTO :showhelp)
+)
+IF DEFINED _log (
+	CALL :log >>user.js-update-log.txt 2>&1
+	IF DEFINED _logp (START user.js-update-log.txt)
+	EXIT /B
+	:log
+	SET _log=2
+	ECHO:##################################################################
+	ECHO:  %date%, %time%
+)
+IF EXIST user.js.new (DEL /F "user.js.new")
+CALL :message "Retrieving latest user.js file from github repository..."
+CALL :psdownload https://raw.githubusercontent.com/HorlogeSkynet/thunderbird-user.js/master/user.js "user.js.new"
+IF EXIST user.js.new (
+	IF DEFINED _esr (
+		CALL :message "Activating ESR section..."
+		CALL :activate user.js.new ".x still uses all the following prefs"
+	)
+	IF DEFINED _multi (
+		FORFILES /P user.js-overrides /M *.js >nul 2>&1
+		IF NOT ERRORLEVEL 1 (
+			IF DEFINED _merge (
+				CALL :message "Merging..."
+				COPY /B /Y user.js-overrides\*.js user-overrides-merged.js
+				CALL :merge user-overrides-merged.js
+				COPY /B /Y user.js.new+user-overrides-merged.js user.js.new
+				CALL :merge user.js.new
+			) ELSE (
+				CALL :message "Appending..."
+				COPY /B /Y user.js.new+"user.js-overrides\*.js" user.js.new
+			)
+		) ELSE (CALL :message "No override files found.")
+	) ELSE (
+		IF EXIST "user-overrides.js" (
+			COPY /B /Y user.js.new+"user-overrides.js" "user.js.new"
+			IF DEFINED _merge (
+				CALL :message "Merging user-overrides.js..."
+				CALL :merge user.js.new
+			) ELSE (
+				CALL :message "user-overrides.js appended."
+			)
+		) ELSE (CALL :message "user-overrides.js not found.")
+	)
+	IF EXIST user.js (
+		FC user.js.new user.js >nul && SET "_changed=false" || SET "_changed=true"
+	)
+	IF "!_changed!"=="true" (
+		CALL :message "Backing up..."
+		IF DEFINED _singlebackup (
+			MOVE /Y user.js user.js.bak >nul
+		) ELSE (
+			FOR /F "delims=" %%# IN ('powershell get-date -format "{yyyyMMdd_HHmmss}"') DO @SET ldt=%%#
+			MOVE /Y user.js "user-backup-!ldt!.js" >nul
+		)
+		REN user.js.new user.js
+		CALL :message "Update complete."
+	) ELSE (
+		IF "!_changed!"=="false" (
+			DEL /F user.js.new >nul
+			CALL :message "Update completed without changes."
+		) ELSE (
+			REN user.js.new user.js
+			CALL :message "Update complete."
+			SET "_changed=true"
+		)
+	)
+) ELSE (
+	CALL :message "Update failed. Make sure PowerShell is allowed internet access."
+	ECHO:  No changes were made.
+)
+IF NOT DEFINED _log (
+	IF NOT DEFINED _ua (
+		IF EXIST prefsCleaner.bat (
+			IF "!_changed!"=="true" (
+				CALL :message "Would you like to run the prefsCleaner now?"
+				CHOICE /C YN /N /M "(Y/N) "
+				IF "1"=="!errorlevel!" ( START "" cmd.exe /C "prefsCleaner.bat" )
+			) ELSE (PAUSE)
+		) ELSE (PAUSE)
+	)
+)
+EXIT /B
+
+::::::::::::::: Message :::::::::::::::
+:message
+SETLOCAL DisableDelayedExpansion
+IF NOT "2"=="%_log%" (ECHO:)
+ECHO:  %~1
+IF NOT "2"=="%_log%" (ECHO:)
+ENDLOCAL
+GOTO :EOF
+
+::::::::::::::: Download :::::::::::::::
+:psdownload
+(
+	PowerShell -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; (New-Object Net.WebClient).DownloadFile('%~1', '%~2')"
+) >nul 2>&1
+GOTO :EOF
+
+::::::::::::::: Activate Section :::::::::::::::
+:activate
+:: arg1 = file
+:: arg2 = line substring
+SETLOCAL DisableDelayedExpansion
+(
+	FOR /F "tokens=1,* delims=:" %%G IN ('FINDSTR /N "^" "%~1"') DO (
+		SET "_temp=%%H"
+		SETLOCAL EnableDelayedExpansion
+		IF "!_temp:%~2=!"=="!_temp!" (
+			ENDLOCAL & ECHO:%%H
+		) ELSE (
+			ECHO://!_temp:~2!
+			ENDLOCAL
+		)
+	)
+)>updatertempfile
+MOVE /Y updatertempfile "%~1" >nul
+ENDLOCAL
+GOTO :EOF
+
+::::::::::::::: Merge :::::::::::::::
+:merge
+SETLOCAL DisableDelayedExpansion
+FOR /F tokens^=2^,^*^ delims^=^'^" %%G IN ('FINDSTR /R /C:"^user_pref[ 	]*\([ 	]*[\"'].*[\"'][ 	]*,.*\)[ 	]*;" "%~1"') DO (SET "[%%G]=%%H")
+FOR /F tokens^=2^,^*^ delims^=^' %%G IN ('FINDSTR /R /C:"^//// --- comment-out --- '[^'][^']*'.*" "%~1"') DO (SET "__unset__%%G=1")
+(
+	FOR /F "tokens=1,* delims=:" %%I IN ('FINDSTR /N "^" "%~1"') DO (
+		SET "_temp=%%J"
+		SETLOCAL EnableDelayedExpansion
+		IF NOT "!_temp:~0,9!"=="user_pref" (
+			ENDLOCAL & ECHO:%%J
+		) ELSE (
+			IF "!_temp:;=!"=="!_temp!" (
+				ENDLOCAL & ECHO:%%J
+			) ELSE (
+				ENDLOCAL
+				FOR /F tokens^=2^ delims^=^'^" %%K IN ("%%J") DO (
+					IF NOT "_user.js.parrot"=="%%K" (
+						IF DEFINED __unset__%%K (
+							ECHO://%%J
+						) ELSE (
+							IF DEFINED [%%K] (
+								SETLOCAL EnableDelayedExpansion
+								FOR /F "delims=" %%L IN ("![%%K]!") DO (
+									ENDLOCAL & ECHO:user_pref("%%K"%%L
+									SET "[%%K]="
+								)
+							)
+						)
+					) ELSE (ECHO:%%J)
+				)
+			)
+		)
+	)
+)>updatertempfile
+MOVE /Y updatertempfile "%~1" >nul
+ENDLOCAL
+GOTO :EOF
+
+::::::::::::::: Help :::::::::::::::
+:showhelp
+MODE 80,54
+CLS
+CALL :message "Available arguments (case-insensitive):"
+CALL :message "  -esr"
+ECHO:     Activate ESR related preferences
+CALL :message "  -log"
+ECHO:     Write the console output to a logfile (user.js-update-log.txt)
+CALL :message "  -logP"
+ECHO:     Like -log, but also open the logfile after updating.
+CALL :message "  -merge"
+ECHO:     Merge overrides instead of appending them. Single-line comments and
+ECHO:     _user.js.parrot lines are appended normally. Overrides for inactive
+ECHO:     user.js prefs will be appended. When -Merge and -MultiOverrides are used
+ECHO:     together, a user-overrides-merged.js file is also generated in the root
+ECHO:     directory for quick reference. It contains only the merged data from
+ECHO:     override files and can be safely discarded after updating, or used as the
+ECHO:     new user-overrides.js. When there are conflicting records for the same
+ECHO:     pref, the value of the last one declared will be used. Visit the wiki
+ECHO:     for usage examples and more detailed information.
+CALL :message "  -multiOverrides"
+ECHO:     Use any and all .js files in a user.js-overrides sub-folder as overrides
+ECHO:     instead of the default user-overrides.js file. Files are appended in
+ECHO:     alphabetical order.
+CALL :message "  -unattended"
+ECHO:     Run without user input.
+CALL :message "  -singleBackup"
+ECHO:     Use a single backup file and overwrite it on new updates, instead of
+ECHO:     cumulative backups. This was the default behaviour before v4.3.
+CALL :message "  -updateBatch"
+ECHO:     Update the script itself on execution, before the normal routine.
+CALL :message ""
+PAUSE
+MODE 80,25
+GOTO :begin