[fpc-pascal] Writeln() behaves differently on Windows and Linux, why?

[Travis Siegel]

On 7/9/2020 5:11 PM, Tomas Hajny wrote:
> On 2020-07-09 22:58, Michael Van Canneyt wrote:
>> On Thu, 9 Jul 2020, Bo Berglund via fpc-pascal wrote:
>>
>>> On Thu, 9 Jul 2020 19:36:31 +0200 (CEST), Michael Van Canneyt
>>> <michael at freepascal.org> wrote:
>>>
>>>> Is this done in a thread ? Since you're using indy, I suppose so.
>>>>
>>>> The crt unit is not thread safe. The implementation on Windows and 
>>>> Linux is
>>>> totally different, which may explain the difference you see.
>>>
>>> Is there a way to check user keyboard input in the main program while
>>> action is being done in the server's threads?
>>
>> Sure, do a fpselect() on file descriptor 0.
>
> You can use the unit Keyboard as well, which is cross-platform.
>
cross platform doesn't mean thread safe, which is the primary reason for 
*not* using crt unit.  I have no idea if keyboard is thread safe or not, 
and I've not seen anything in this discussion to answer that question 
either.

Is there sample code of server code so testing can be performed outside 
the discussion parameters? I have looked for years for client/server 
information for freepascal, and never found anything, then this 
discussion shows some code for running a server, where did that 
information come from? I'm apparently really bad on searching for said 
information.