RE: revectoring

["Peter Prade" <Peter.Prade@...>]

> I wish to dynamically revector the Lua functions write, 
> writeto, read and readfrom so that the original function
> is called when not using stdin/stdout but calls my function
> when using stdin/stdout.
> 
> Can anyone help?

perhaps something along these lines? (out of my head, untested code)

function write(...)
  if type(arg[1]) == "userdata" then -- filehandles are userdata
    call(%write,arg)
  else
    call(%mywrite,arg) -- or just do whatever you want here
  end
end