Re: How to convert to-be-closed variable to normal one in runtime?

[Dmitry Meyer <me@...>]

It's an ad-hoc solution, but how about:

   local function log_start_time()
      local logfile = assert(io.open("log.txt", "a"))
      local _autoclose_logfile <close> = arg[1] ~= "--log-everything" 
and logfile
   ...

It would be more flexible if the <close> attribute doesn't imply the 
<const> (it would be possible to just rebind logfile to nil). But I 
understand why it was designed that way.