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	diff --git a/username_restrictions/init.lua b/username_restrictions/init.lua
	new file mode 100644
	index 0000000..cac9c2c
	--- /dev/null
	+++ b/username_restrictions/init.lua
	@@ -0,0 +1,27 @@
	+-- twi_mods/username_restrictions/init.lua
	+-- Ban some usernames
	+-- Copyright (C) 2024 1F616EMO
	+-- SPDX-License-Identifier: LGPL-2.1-or-later
	+
	+local banned_parts = {}
	+
	+for _, part in ipairs({"admin", "moderator"}) do
	+ banned_parts[part] = antispoof.normalize(part)
	+end
	+
	+local auth
	+minetest.register_on_prejoinplayer(function(name)
	+ if name == "singleplayer" or name == minetest.settings:get("name") then return end
	+ auth = auth or minetest.get_auth_handler()
	+ if not auth.get_auth(name) then
	+ local normalized_name = antispoof.normalize(name)
	+ for orig_part, norm_part in pairs(banned_parts) do
	+ if string.find(normalized_name, norm_part) then
	+ return string.format(
	+ "Invalid username %s: Username cannt conain \"%s\"",
	+ name, orig_part
	+ )
	+ end
	+ end
	+ end
	+end)
	\ No newline at end of file
	diff --git a/username_restrictions/mod.conf b/username_restrictions/mod.conf
	new file mode 100644
	index 0000000..67c075a
	--- /dev/null
	+++ b/username_restrictions/mod.conf
	@@ -0,0 +1,2 @@
	+name = username_restrictions
	+depends = antispoof