[fpc-pascal] Redirecting input to a child process

Ludo Brands ludo.brands at free.fr
Sun May 8 20:53:18 CEST 2011

That's what I tried already. It simply echoes the ^Z (right arrow). 
I tried also to close the pipe explicitly from the sender side without

I'm afraid we're looking at a problem with more.com waiting until the
process releases the pipe. Closing the handle from one side of the pipe
isn't enough to close the pipe. Or as
http://msdn.microsoft.com/en-us/library/aa365152%28v=vs.85%29.aspx says: "An
instance of a pipe is always deleted when the last handle to the instance of
the named pipe is closed". 


-----Message d'origine-----
De : fpc-pascal-bounces at lists.freepascal.org
[mailto:fpc-pascal-bounces at lists.freepascal.org] De la part de waldo kitty
Envoyé : dimanche 8 mai 2011 20:29
À : fpc-pascal at lists.freepascal.org
Objet : Re: RE : [fpc-pascal] Redirecting input to a child process

On 5/8/2011 13:17, Anton Shepelev wrote:
> Ludo Brands:
>> If  you  run  'more'  in  a  cmd window you'll notice that 'more' 
>> echoes the input but only sends to  stdout  when  a
>> return   is  entered.  I  modified  the  program  to  send
>> 'Anton'#10  and the  program  reads  back  'Anton'#10 from stdout.
> Thank you, Ludo, this is great!
> But why doesn't the process finish? I thought that the clos- ing of 
> the write end of the StdIn pipe handle should cause a EOF to be 'seen' 
> at the read end, but this does not happen.

how about sending the ^Z line the CRLF is being sent to indicate line
that should indicate the EOF which should trigger the ending of the process
closing of the pipe... shouldn't it?
fpc-pascal maillist  -  fpc-pascal at lists.freepascal.org

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