[fpc-pascal] Unbuffering I/O

[Martin Schreiber]

On Wednesday 29 August 2018 17:01:54 Mark Morgan Lloyd wrote:
> I think I've seen this question asked before, my apologies if this was
> recently.
>
> I've got two programs intended to be functionally identical, one in Perl
> and the other in FPC. They read a unix-domain datagram, decode the
> message, and emit output; if this goes to a file then it's reasonable to
> monitor it using  tail -f
>
> Perl has a variable that you can set to force output to be unbuffered,
> with the result that as soon as a message is output it's in the file in
> its entirety.
>
> Is there an equivalent for Pascal, or should I be using something like
> fpSync(stdout) at opportune times?

In order to flush textfiles automatically I use
"
 ttextrec(<thefile>).flushfunc:= ttextrec(<thefile>).inoutfunc;
"
after it is opened.

Martin