[Dev-luatex] security

Hi all, I have just implemented the beginnings of a --safer switch. For the moment, the switch does not really do much. It only disables access to some Lua functions: os.* io.popen lfs.* This is at the same time too much and not enough, so I welcome any opinions on what should be allowed under --safer and what should be forbidden. My guess is that I should also disallow at least: io.open(,"w") io.output() but os.time os.date os.clock os.getenv are probably ok. Greetings, Taco