[Maxima] how to use "maxima --batch" *reliably* ??

[Raymond Toy (RT/EUS)]

Robert Dodier wrote:
> About interactive queries triggered in batch files,
> 
> On Wed, Feb 27, 2008 at 12:54 PM, Robert Marik <marik at mendelu.cz> wrote:
> 
>> Maxima hangs and the process sits on the server. I use the timeout scritp
>> which kill maxima after 5 seconds:
>> http://www.shelldorado.com/scripts/cmds/timeout
> 
> It seems like it should be possible to close the terminal input stream
> so that if any read from the terminal is attempted then there would be
> a Lisp error. I don't know if that's really possible; depends on the
> Lisp implementation for sure.

Neat.

FWIW, mread reads from *query-io*, which is a standard CL stream.  If 
you (close *query-io*), you should get some kind of error when maxima 
needs to ask a question.  Not sure what other effects this might have, 
though.

Ray