util.stanza: add at_top helper
This allows the user to detect whether the cursor is currently
at the top of the stanza. This will be used by util.xmppstream
to be able to port it over.
-- 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 unpack = table.unpack or unpack; --luacheck: ignore 113
local t_insert = table.insert;
function _G.import(module, ...)
local m = package.loaded[module] or require(module);
if type(m) == "table" and ... then
local ret = {};
for _, f in ipairs{...} do
t_insert(ret, m[f]);
end
return unpack(ret);
end
return m;
end