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mod_invites_adhoc: Set non-nil defaults for options, fixes traceback (thanks Martin) Fixes an error when attempting to call the :empty() method on the default implicit default nil value.
author Kim Alvefur <zash@zash.se>
date Wed, 14 Sep 2022 17:21:42 +0200
parents e7b126161e7b
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---
labels:
- 'Stage-Alpha'
summary: 'Require MUC occupant nicknames to match a specific pattern'
---

Introduction
============

This checks the nickname of a joining user against a configurable
[Lua pattern](https://www.lua.org/manual/5.2/manual.html#6.4.1), and prevents
them from joining if it does not match.

Configuration
=============

There is a single configuration option, `muc_restrict_nick_pattern` and the
default is `"^%w+$"` - i.e. allow only alphanumeric characters in nicknames.

Compatibility
=============

Requires Prosody 0.11 or higher.