QT for some reason messes with XCompose causing broken input (Qt 5 only - Qt 4 did not break anything). In Qt 5.2 and 5.3 this was causing an invalid conversion in chat messages containing these resulting in the bad bytes being stripped. In Qt 5.9 it is still broken, but you at least get a string with something in it. This checks for non-zero converted strings for room creation and chat lines.
# Find liblua
#
# Once done this will define
# LUA_FOUND - system has Lua
# LUA_INCLUDE_DIR - the Lua include directory
# LUA_LIBRARY - The library needed to use Lua
# Copyright (c) 2013, Vittorio Giovara <vittorio.giovara@gmail.com>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
include(FindPackageHandleStandardArgs)
find_path(LUA_INCLUDE_DIR lua.h
PATHS /usr/include /usr/local/include /usr/pkg/include
PATH_SUFFIXES lua5.1 lua51 lua-5.1)
find_library(LUA_LIBRARY NAMES liblua lua51 lua5.1 lua-5.1 lua
PATHS /lib /usr/lib /usr/local/lib /usr/pkg/lib)
find_package_handle_standard_args(Lua DEFAULT_MSG LUA_LIBRARY LUA_INCLUDE_DIR)
mark_as_advanced(LUA_INCLUDE_DIR LUA_LIBRARY)