Mercurial > prosody-hg
view plugins/mod_welcome.lua @ 14140:c9c4a13732e4 13.0
util.multitable: Don't treat false as a missing key
'if not next(some_table)' is a tempting pattern to check whether a table is
empty, but we have had multiple bugs in the past where a literal `false` was
present as a key, incorrectly matching this test.
The correct test is to test for nil, which cannot ever be a key, and means the
table is legitimately empty.
| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Fri, 17 Apr 2026 17:45:31 +0100 |
| parents | 74b9e05af71e |
| children |
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-- Prosody IM -- Copyright (C) 2008-2010 Matthew Wild -- Copyright (C) 2008-2010 Waqas Hussain -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local host = module:get_host(); local welcome_text = module:get_option_string("welcome_message", "Hello $username, welcome to the $host IM server!"); local st = require "prosody.util.stanza"; module:hook("user-registered", function (user) local welcome_stanza = st.message({ to = user.username.."@"..user.host, from = host }, welcome_text:gsub("$(%w+)", user)); module:send(welcome_stanza); module:log("debug", "Welcomed user %s@%s", user.username, user.host); end);
