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mod_http_muc_log: Fix error in js when displaying presence is disabled When the form is hidden, attempting to index forms[0] throws an error, however this is harmless since the script is finished by that point.
author Kim Alvefur <zash@zash.se>
date Sun, 04 Dec 2022 22:23:56 +0100
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.