local function check (text, lang)

    local fname = os.tmpname()

    local fh = io.open(fname, "w")

    fh:write(text)

    fh:close()

    local cmd = "/usr/bin/enchant -a "..fname

    if lang and not lang:match("[^_%w]") then

        cmd = cmd.." -d "..lang

    end

    fh = io.popen(cmd)

    fh:read("*l")           -- skip header

    result = fh:read("*a")  -- read spellchecker output

    fh:close()

    os.remove(fname)

    return result

end

    if not args then return nil, "What do you want me to spellcheck?" end

    local r

    local l, s = string.match(args, "^%s*-d%s?([%w_]+)%s+(.*)%s*$")

    if l then

        r = check(s, l)

    else

        r = check(args)

    end

    return r:gsub("\n+$", "")

end

mcbot_register_command("spell", spell)