diff --git a/doc/lua_api.md b/doc/lua_api.md
index 6fd3cb4f3..286c3b873 100644
--- a/doc/lua_api.md
+++ b/doc/lua_api.md
@@ -4006,8 +4006,9 @@ Translations
 Texts can be translated client-side with the help of `minetest.translate` and
 translation files.
 
-Consider using the tool [update_translations](https://github.com/minetest-tools/update_translations)
-to generate and update translation files automatically from the Lua source.
+Consider using the script `util/mtt_update.py` in the Minetest repository
+to generate and update translation files automatically from the Lua sources.
+See `util/README_mtt_update.md` for an explanation.
 
 Translating a string
 --------------------
diff --git a/util/README_mtt_update.md b/util/README_mtt_update.md
new file mode 100644
index 000000000..9fed19981
--- /dev/null
+++ b/util/README_mtt_update.md
@@ -0,0 +1,213 @@
+# `mtt_update.py`—Minetest Translation Updater
+
+This Python script is intended for use with localized Minetest mods, i.e., mods that use
+`*.tr` and contain translatable strings of the form `S("This string can be translated")`.
+It extracts the strings from the mod's source code and updates the localization files
+accordingly. It can also be used to update the `*.tr` files in Minetest's `builtin` component.
+
+## Preparing your source code
+
+This script makes assumptions about your source code. Before it is usable, you first have
+to prepare your source code accordingly.
+
+### Choosing the textdomain name
+
+It is recommended to set the textdomain name (for `minetest.get_translator`) to be identical
+of the mod name as the script will automatically detect it. If the textdomain name differs,
+you may have to manually change the `# textdomain:` line of newly generated files.
+
+**Note:** In each `*.tr` file, there **must** be only one textdomain. Multiple textdomains in
+the same file are not supported by this script and any additional textdomain line will be
+removed.
+
+### Defining the helper functions
+
+In any source code file with translatable strings, you have to manually define helper
+functions at the top with something like `local S = minetest.get_translator("<textdomain>")`.
+Optionally, you can also define additional helper functions `FS`, `NS` and `NFS` if needed.
+
+Here is the list of all recognized function names. All functions return a string.
+
+* `S`: Returns translation of input. See Minetest's `lua_api.md`. You should always have at
+       least this function defined.
+* `NS`: Returns the input. Useful to make a string visible to the script without actually
+        translating it here.
+* `FS`: Same as `S`, but returns a formspec-escaped version of the translation of the input.
+        Supported for convenience.
+* `NFS`: Returns a formspec-escaped version of the input, but not translated.
+         Supported for convenience.
+
+Here is the boilerplate code you have to add at the top of your source code file:
+
+    local S = minetest.get_translator("<textdomain>")
+    local NS = function(s) return s end
+    local FS = function(...) return minetest.formspec_escape(S(...)) end
+    local NFS = function(s) return minetest.formspec_escape(s) end
+
+Replace `<textdomain>` above and optionally delete `NS`, `FS` and/or `NFS` if you don't need
+them.
+
+### Preparing the strings
+
+This script can detect translatable strings of the notations listed below.
+Additional function arguments followed after a literal string are ignored.
+
+* `S("literal")`: one literal string enclosed by the delimiters
+  `"..."`, `'...'` or `[[...]]`
+* `S("foo " .. 'bar ' .. "baz")`: concatenation of multiple literal strings. Line
+  breaks are accepted.
+
+The `S` may also be `NS`, `FS` and `NFS` (see above).
+
+Undetectable notations:
+
+* `S"literal"`: omitted function brackets
+* `S(variable)`: requires the use of `NS`. See example below.
+* `S("literal " .. variable)`: non-static content.
+  Use placeholders (`@1`, ...) for variable text.
+* Any literal string concatenation using `[[...]]`
+
+### A minimal example
+
+This minimal code example sends "Hello world!" to all players, but translated according to
+each player's language:
+
+    local S = minetest.get_translator("example")
+    minetest.chat_send_all(S("Hello world!"))
+
+### How to use `NS`
+
+The reason why `NS` exists is for cases like this: Sometimes, you want to define a list of
+strings to they can be later output in a function. Like so:
+
+    local fruit = { "Apple", "Orange", "Pear" }
+    local function return_fruit(fruit_id)
+       return fruit[fruit_id]
+    end
+
+If you want to translate the fruit names when `return_fruit` is run, but have the
+*untranslated* fruit names in the `fruit` table stored, this is where `NS` will help.
+It will show the script the string without Minetest translating it. The script could be made
+translatable like this:
+
+    local fruit = { NS("Apple"), NS("Orange"), NS("Pear") }
+    local function return_fruit(fruit_id)
+       return S(fruit[fruit_id])
+    end
+
+## How to run the script
+
+First, change the working directory to the directory of the mod you want the files to be
+updated. From this directory, run the script.
+
+When you run the script, it will update the `template.txt` and any `*.tr` files present
+in that mod's `/locale` folder. If the `/locale` folder or `template.txt` file don't
+exist yet, they will be created.
+
+This script will also work in the root directory of a modpack. It will run on each mod
+inside the modpack in that situation. Alternatively, you can run the script to update
+the files of all mods in subdirectories with the `-r` option, which is useful to update
+the locale files in an entire game.
+
+It has the following command line options:
+
+    mtt_update.py [OPTIONS] [PATHS...]
+
+    --help, -h: prints this help message
+    --recursive, -r: run on all subfolders of paths given
+    --old-file, -o: create copies of files before updating them, named `<FILE NAME>.old`
+    --break-long-lines, -b: add extra line-breaks before and after long strings
+    --print-source, -p: add comments denoting the source file
+    --verbose, -v: add output information
+    --truncate-unused, -t: delete unused strings from files
+
+## Script output
+
+This section explains how the output of this script works, roughly. This script aims to make
+the output more or less stable, i.e. given identical source files and arguments, the script
+should produce the same output.
+
+### Textdomain
+
+The script will add (if not already present) a `# textdomain: <modname>` at the top, where
+`<modname>` is identical to the mod directory name. If a `# textdomain` already exists, it
+will be moved to the top, with the textdomain name being left intact (even if it differs
+from the mod name).
+
+**Note:** If there are multiple `# textdomain:` lines in the file, all of them except the
+first one will be deleted. This script only supports one textdomain per `*.tr` file.
+
+### Strings
+
+The order of the strings is deterministic and follows certain rules: First, all strings are
+grouped by the source `*.lua` file. The files are loaded in alphabetical order. In case of
+subdirectories, the mod's root directory takes precedence, then the directories are traversed
+in top-down alphabetical order. Second, within each file, the strings are then inserted in
+the same order as they appear in the source code.
+
+If a string appears multiple times in the source code, the string will be added when it was
+first found only.
+
+Don't bother to manually organize the order of the lines in the file yourself because the
+script will just reorder everything.
+
+If the mod's source changes in such a way that a line with an existing translation or comment
+is no longer present, and `--truncate-unused` or `-t` are *not* provided as arguments, the
+unused line will be moved to the bottom of the translation file under a special comment:
+
+    ##### not used anymore #####
+
+This allows for old translations and comments to be reused with new lines where appropriate.
+This script doesn't attempt "fuzzy" matching of old strings to new, so even a single change
+of punctuation or spelling will put strings into the "not used anymore" section and require
+manual re-association with the new string.
+
+### Comments
+
+The script will preserve any comments in an existing `template.txt` or the various `*.tr`
+files, associating them with the line that follows them. So for example:
+
+    # This comment pertains to Some Text
+    Some text=
+    
+    # Multi-line comments
+    # are also supported
+    Text as well=
+
+There are also a couple of special comments that this script gives special treatment to.
+
+#### Source file comments
+
+If `--print-source` or `-p` is provided as option, the script will insert comments to show
+from which file or files each string has come from.
+This is the syntax of such a comment:
+
+    ##[ file.lua ]##
+
+This comment means that all lines following it belong to the file `file.lua`. In the special
+case the same string was found in multiple files, multiple file name comments will be used in
+row, like so:
+
+    ##[ file1.lua ]##
+    ##[ file2.lua ]##
+    ##[ file3.lua ]##
+    example=Beispiel
+
+This means the string "example" was found in the files `file1.lua`, `file2.lua` and
+`file3.lua`.
+
+If the print source option is not provided, these comments will disappear.
+
+Note that all comments of the form `##[something]##` will be treated as "source file" comments
+so they may be moved, changed or removed by the script at will.
+
+#### "not used anymore" section
+
+By default, the exact comment `##### not used anymore #####` will be automatically added to
+mark the beginning of a section where old/unused strings will go. Leave the exact wording of
+this comment intact so this line can be moved (or removed) properly in subsequent runs.
+
+## Updating `builtin`
+
+To update the `builtin` component of Minetest, change the working directory to `builtin` of
+the Minetest source code repository, then run this script from there.
diff --git a/util/mtt_update.py b/util/mtt_update.py
new file mode 100755
index 000000000..a6b3286b3
--- /dev/null
+++ b/util/mtt_update.py
@@ -0,0 +1,466 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Script to generate Minetest translation template files and update
+# translation files.
+#
+# Copyright (C) 2019 Joachim Stolberg, 2020 FaceDeer, 2020 Louis Royer,
+#                    2023 Wuzzy.
+# License: LGPLv2.1 or later (see LICENSE file for details)
+
+from __future__ import print_function
+import os, fnmatch, re, shutil, errno
+from sys import argv as _argv
+from sys import stderr as _stderr
+
+# Running params
+params = {"recursive": False,
+	"help": False,
+	"verbose": False,
+	"folders": [],
+	"old-file": False,
+	"break-long-lines": False,
+	"print-source": False,
+	"truncate-unused": False,
+}
+# Available CLI options
+options = {"recursive": ['--recursive', '-r'],
+	"help": ['--help', '-h'],
+	"verbose": ['--verbose', '-v'],
+	"old-file": ['--old-file', '-o'],
+	"break-long-lines": ['--break-long-lines', '-b'],
+	"print-source": ['--print-source', '-p'],
+	"truncate-unused": ['--truncate-unused', '-t'],
+}
+
+# Strings longer than this will have extra space added between
+# them in the translation files to make it easier to distinguish their
+# beginnings and endings at a glance
+doublespace_threshold = 80
+
+# These symbols mark comment lines showing the source file name.
+# A comment may look like "##[ init.lua ]##".
+symbol_source_prefix = "##["
+symbol_source_suffix = "]##"
+
+# comment to mark the section of old/unused strings
+comment_unused = "##### not used anymore #####"
+
+def set_params_folders(tab: list):
+	'''Initialize params["folders"] from CLI arguments.'''
+	# Discarding argument 0 (tool name)
+	for param in tab[1:]:
+		stop_param = False
+		for option in options:
+			if param in options[option]:
+				stop_param = True
+				break
+		if not stop_param:
+			params["folders"].append(os.path.abspath(param))
+
+def set_params(tab: list):
+	'''Initialize params from CLI arguments.'''
+	for option in options:
+		for option_name in options[option]:
+			if option_name in tab:
+				params[option] = True
+				break
+
+def print_help(name):
+	'''Prints some help message.'''
+	print(f'''SYNOPSIS
+	{name} [OPTIONS] [PATHS...]
+DESCRIPTION
+	{', '.join(options["help"])}
+		prints this help message
+	{', '.join(options["recursive"])}
+		run on all subfolders of paths given
+	{', '.join(options["old-file"])}
+		create *.old files
+	{', '.join(options["break-long-lines"])}
+		add extra line breaks before and after long strings
+	{', '.join(options["print-source"])}
+		add comments denoting the source file
+	{', '.join(options["verbose"])}
+		add output information
+	{', '.join(options["truncate-unused"])}
+		delete unused strings from files
+''')
+
+def main():
+	'''Main function'''
+	set_params(_argv)
+	set_params_folders(_argv)
+	if params["help"]:
+		print_help(_argv[0])
+	else:
+		# Add recursivity message
+		print("Running ", end='')
+		if params["recursive"]:
+			print("recursively ", end='')
+		# Running
+		if len(params["folders"]) >= 2:
+			print("on folder list:", params["folders"])
+			for f in params["folders"]:
+				if params["recursive"]:
+					run_all_subfolders(f)
+				else:
+					update_folder(f)
+		elif len(params["folders"]) == 1:
+			print("on folder", params["folders"][0])
+			if params["recursive"]:
+				run_all_subfolders(params["folders"][0])
+			else:
+				update_folder(params["folders"][0])
+		else:
+			print("on folder", os.path.abspath("./"))
+			if params["recursive"]:
+				run_all_subfolders(os.path.abspath("./"))
+			else:
+				update_folder(os.path.abspath("./"))
+
+# Group 2 will be the string, groups 1 and 3 will be the delimiters (" or ')
+# See https://stackoverflow.com/questions/46967465/regex-match-text-in-either-single-or-double-quote
+pattern_lua_quoted = re.compile(r'[\.=^\t,{\(\s]N?F?S\s*\(\s*(["\'])((?:\\\1|(?:(?!\1)).)*)(\1)[\s,\)]', re.DOTALL)
+# Handles the [[ ... ]] string delimiters
+pattern_lua_bracketed = re.compile(r'[\.=^\t,{\(\s]N?F?S\s*\(\s*\[\[(.*?)\]\][\s,\)]', re.DOTALL)
+
+# Handles "concatenation" .. " of strings"
+pattern_concat = re.compile(r'["\'][\s]*\.\.[\s]*["\']', re.DOTALL)
+
+pattern_tr = re.compile(r'(.*?[^@])=(.*)')
+pattern_name = re.compile(r'^name[ ]*=[ ]*([^ \n]*)')
+pattern_tr_filename = re.compile(r'\.tr$')
+
+# Attempt to read the mod's name from the mod.conf file or folder name. Returns None on failure
+def get_modname(folder):
+	try:
+		with open(os.path.join(folder, "mod.conf"), "r", encoding='utf-8') as mod_conf:
+			for line in mod_conf:
+				match = pattern_name.match(line)
+				if match:
+					return match.group(1)
+	except FileNotFoundError:
+		if not os.path.isfile(os.path.join(folder, "modpack.txt")):
+			folder_name = os.path.basename(folder)
+			# Special case when run in Minetest's builtin directory
+			if folder_name == "builtin":
+				return "__builtin"
+			else:
+				return folder_name
+		else:
+			return None
+	return None
+
+# If there are already .tr files in /locale, returns a list of their names
+def get_existing_tr_files(folder):
+	out = []
+	for root, dirs, files in os.walk(os.path.join(folder, 'locale/')):
+		for name in files:
+			if pattern_tr_filename.search(name):
+				out.append(name)
+	return out
+
+# from https://stackoverflow.com/questions/600268/mkdir-p-functionality-in-python/600612#600612
+# Creates a directory if it doesn't exist, silently does
+# nothing if it already exists
+def mkdir_p(path):
+	try:
+		os.makedirs(path)
+	except OSError as exc: # Python >2.5
+		if exc.errno == errno.EEXIST and os.path.isdir(path):
+			pass
+		else: raise
+
+# Converts the template dictionary to a text to be written as a file
+# dKeyStrings is a dictionary of localized string to source file sets
+# dOld is a dictionary of existing translations and comments from
+# the previous version of this text
+def strings_to_text(dkeyStrings, dOld, mod_name, header_comments, textdomain):
+	# if textdomain is specified, insert it at the top
+	if textdomain != None:
+		lOut = [textdomain] # argument is full textdomain line
+	# otherwise, use mod name as textdomain automatically
+	else:
+		lOut = [f"# textdomain: {mod_name}"]
+	if header_comments is not None:
+		lOut.append(header_comments)
+
+	dGroupedBySource = {}
+
+	for key in dkeyStrings:
+		sourceList = list(dkeyStrings[key])
+		sourceString = "\n".join(sourceList)
+		listForSource = dGroupedBySource.get(sourceString, [])
+		listForSource.append(key)
+		dGroupedBySource[sourceString] = listForSource
+
+	lSourceKeys = list(dGroupedBySource.keys())
+	lSourceKeys.sort()
+	for source in lSourceKeys:
+		localizedStrings = dGroupedBySource[source]
+		if params["print-source"]:
+			if lOut[-1] != "":
+				lOut.append("")
+			lOut.append(source)
+		for localizedString in localizedStrings:
+			val = dOld.get(localizedString, {})
+			translation = val.get("translation", "")
+			comment = val.get("comment")
+			if params["break-long-lines"] and len(localizedString) > doublespace_threshold and not lOut[-1] == "":
+				lOut.append("")
+			if comment != None and comment != "" and not comment.startswith("# textdomain:"):
+				lOut.append(comment)
+			lOut.append(f"{localizedString}={translation}")
+			if params["break-long-lines"] and len(localizedString) > doublespace_threshold:
+				lOut.append("")
+
+	unusedExist = False
+	if not params["truncate-unused"]:
+		for key in dOld:
+			if key not in dkeyStrings:
+				val = dOld[key]
+				translation = val.get("translation")
+				comment = val.get("comment")
+				# only keep an unused translation if there was translated
+				# text or a comment associated with it
+				if translation != None and (translation != "" or comment):
+					if not unusedExist:
+						unusedExist = True
+						lOut.append("\n\n" + comment_unused + "\n")
+					if params["break-long-lines"] and len(key) > doublespace_threshold and not lOut[-1] == "":
+						lOut.append("")
+					if comment != None:
+						lOut.append(comment)
+					lOut.append(f"{key}={translation}")
+					if params["break-long-lines"] and len(key) > doublespace_threshold:
+						lOut.append("")
+	return "\n".join(lOut) + '\n'
+
+# Writes a template.txt file
+# dkeyStrings is the dictionary returned by generate_template
+def write_template(templ_file, dkeyStrings, mod_name):
+	# read existing template file to preserve comments
+	existing_template = import_tr_file(templ_file)
+
+	text = strings_to_text(dkeyStrings, existing_template[0], mod_name, existing_template[2], existing_template[3])
+	mkdir_p(os.path.dirname(templ_file))
+	with open(templ_file, "wt", encoding='utf-8') as template_file:
+		template_file.write(text)
+
+# Gets all translatable strings from a lua file
+def read_lua_file_strings(lua_file):
+	lOut = []
+	with open(lua_file, encoding='utf-8') as text_file:
+		text = text_file.read()
+
+		text = re.sub(pattern_concat, "", text)
+
+		strings = []
+		for s in pattern_lua_quoted.findall(text):
+			strings.append(s[1])
+		for s in pattern_lua_bracketed.findall(text):
+			strings.append(s)
+
+		for s in strings:
+			s = re.sub(r'"\.\.\s+"', "", s)
+			s = re.sub("@[^@=0-9]", "@@", s)
+			s = s.replace('\\"', '"')
+			s = s.replace("\\'", "'")
+			s = s.replace("\n", "@n")
+			s = s.replace("\\n", "@n")
+			s = s.replace("=", "@=")
+			lOut.append(s)
+	return lOut
+
+# Gets strings from an existing translation file
+# returns both a dictionary of translations
+# and the full original source text so that the new text
+# can be compared to it for changes.
+# Returns also header comments in the third return value.
+def import_tr_file(tr_file):
+	dOut = {}
+	text = None
+	in_header = True
+	header_comments = None
+	textdomain = None
+	if os.path.exists(tr_file):
+		with open(tr_file, "r", encoding='utf-8') as existing_file :
+			# save the full text to allow for comparison
+			# of the old version with the new output
+			text = existing_file.read()
+			existing_file.seek(0)
+			# a running record of the current comment block
+			# we're inside, to allow preceeding multi-line comments
+			# to be retained for a translation line
+			latest_comment_block = None
+			for line in existing_file.readlines():
+				line = line.rstrip('\n')
+				# "##### not used anymore #####" comment
+				if line == comment_unused:
+					# Always delete the 'not used anymore' comment.
+					# It will be re-added to the file if neccessary.
+					latest_comment_block = None
+					if header_comments != None:
+						in_header = False
+					continue
+				# comment lines
+				elif line.startswith("#"):
+					# source file comments: ##[ file.lua ] ##
+					if line.startswith(symbol_source_prefix) and line.endswith(symbol_source_suffix):
+						# remove those comments; they may be added back automatically
+						continue
+
+					# Store first occurance of textdomain
+					# discard all subsequent textdomain lines
+					if line.startswith("# textdomain:"):
+						if textdomain == None:
+							textdomain = line
+						continue
+					elif in_header:
+						# Save header comments (normal comments at top of file)
+						if not header_comments:
+							header_comments = line
+						else:
+							header_comments = header_comments + "\n" + line
+					else:
+						# Save normal comments
+						if line.startswith("# textdomain:") and textdomain == None:
+							textdomain = line
+						elif not latest_comment_block:
+							latest_comment_block = line
+						else:
+							latest_comment_block = latest_comment_block + "\n" + line
+
+					continue
+
+				match = pattern_tr.match(line)
+				if match:
+					# this line is a translated line
+					outval = {}
+					outval["translation"] = match.group(2)
+					if latest_comment_block:
+						# if there was a comment, record that.
+						outval["comment"] = latest_comment_block
+					latest_comment_block = None
+					if header_comments != None:
+						in_header = False
+
+					dOut[match.group(1)] = outval
+	return (dOut, text, header_comments, textdomain)
+
+# like os.walk but returns sorted filenames
+def sorted_os_walk(folder):
+	tuples = []
+	t = 0
+	for root, dirs, files in os.walk(folder):
+		tuples.append( (root, dirs, files) )
+		t = t + 1
+
+	tuples = sorted(tuples)
+
+	paths_and_files = []
+	f = 0
+
+	for tu in tuples:
+		root = tu[0]
+		dirs = tu[1]
+		files = tu[2]
+		files = sorted(files, key=str.lower)
+		for filename in files:
+			paths_and_files.append( (os.path.join(root, filename), filename) )
+			f = f + 1
+	return paths_and_files
+
+# Walks all lua files in the mod folder, collects translatable strings,
+# and writes it to a template.txt file
+# Returns a dictionary of localized strings to source file lists
+# that can be used with the strings_to_text function.
+def generate_template(folder, mod_name):
+	dOut = {}
+	paths_and_files = sorted_os_walk(folder)
+	for paf in paths_and_files:
+		fullpath_filename = paf[0]
+		filename = paf[1]
+		if fnmatch.fnmatch(filename, "*.lua"):
+			found = read_lua_file_strings(fullpath_filename)
+			if params["verbose"]:
+				print(f"{fullpath_filename}: {str(len(found))} translatable strings")
+
+			for s in found:
+				sources = dOut.get(s, set())
+				sources.add(os.path.relpath(fullpath_filename, start=folder))
+				dOut[s] = sources
+
+	if len(dOut) == 0:
+		return None
+
+	# Convert source file set to list, sort it and add comment symbols.
+	# Needed because a set is unsorted and might result in unpredictable.
+	# output orders if any source string appears in multiple files.
+	for d in dOut:
+		sources = dOut.get(d, set())
+		sources = sorted(list(sources), key=str.lower)
+		newSources = []
+		for i in sources:
+			newSources.append(f"{symbol_source_prefix} {i} {symbol_source_suffix}")
+		dOut[d] = newSources
+
+	templ_file = os.path.join(folder, "locale/template.txt")
+	write_template(templ_file, dOut, mod_name)
+	return dOut
+
+# Updates an existing .tr file, copying the old one to a ".old" file
+# if any changes have happened
+# dNew is the data used to generate the template, it has all the
+# currently-existing localized strings
+def update_tr_file(dNew, mod_name, tr_file):
+	if params["verbose"]:
+		print(f"updating {tr_file}")
+
+	tr_import = import_tr_file(tr_file)
+	dOld = tr_import[0]
+	textOld = tr_import[1]
+
+	textNew = strings_to_text(dNew, dOld, mod_name, tr_import[2], tr_import[3])
+
+	if textOld and textOld != textNew:
+		print(f"{tr_file} has changed.")
+		if params["old-file"]:
+			shutil.copyfile(tr_file, f"{tr_file}.old")
+
+	with open(tr_file, "w", encoding='utf-8') as new_tr_file:
+		new_tr_file.write(textNew)
+
+# Updates translation files for the mod in the given folder
+def update_mod(folder):
+	modname = get_modname(folder)
+	if modname is not None:
+		print(f"Updating translations for {modname}")
+		data = generate_template(folder, modname)
+		if data == None:
+			print(f"No translatable strings found in {modname}")
+		else:
+			for tr_file in get_existing_tr_files(folder):
+				update_tr_file(data, modname, os.path.join(folder, "locale/", tr_file))
+	else:
+		print(f"Unable to determine the mod name in folder {folder}. Missing 'name' field in mod.conf.", file=_stderr)
+		exit(1)
+
+# Determines if the folder being pointed to is a mod or a mod pack
+# and then runs update_mod accordingly
+def update_folder(folder):
+	is_modpack = os.path.exists(os.path.join(folder, "modpack.txt")) or os.path.exists(os.path.join(folder, "modpack.conf"))
+	if is_modpack:
+		subfolders = [f.path for f in os.scandir(folder) if f.is_dir() and not f.name.startswith('.')]
+		for subfolder in subfolders:
+			update_mod(subfolder)
+	else:
+		update_mod(folder)
+	print("Done.")
+
+def run_all_subfolders(folder):
+	for modfolder in [f.path for f in os.scandir(folder) if f.is_dir() and not f.name.startswith('.')]:
+		update_folder(modfolder)
+
+main()