How to output data to STDERR stream from Turbo Pascal 7.0/7.1 program?

Question

DOS

In Turbo Pascal, two standard streams are available to the program: <STDIN> in a variable of type text Input and <STDOUT> in Output .

Please tell me how to open the <STDERR> error stream for writing using standard language tools (even with crutches, for example, assembler inserts, interrupts, DOS and BIOS function calls).

Answer 1

www.macgui.com/usenet/?group=107&id=6350#msg

Answer 2

MS Dos, classic
echo "Error" 2 > errorfile.log
file #2

Answer 3

I haven't picked up Turbo Pascal for a long time, about 15 years :)
Try something like this:

program Demo;
uses
  Dos;
var
  StdErr: Text;
begin
  Assign(StdErr, '');
  Rewrite(StdErr);
  TextRec(StdErr).Handle:=2;

  Writeln('Standard output');
  Writeln(StdErr, 'Standard error');

  Close(StdErr);
end.

Well, in unit, if it works

Answer 4

Also, look at the sources of the Dos module (like Turbo Pascal should also be the source of standard modules) - maybe there already is a variable like ErrOutput

Answer 5

I found the sources of Borland Pascal 7.0 - there Input and Output are defined in system.pas and there is nothing with stderr :(