Tab character in dbms_output window adds blank line

[Worker]

When running the following code in a test window, the dbms_output window displays extra blank lines:

begin
  dbms_output.put_line( '[' || CHR(9) || ']' );
  dbms_output.put_line( '[' || CHR(9) || ']' );
end;

Running this in a command window (with serveroutput on) does not produce the blank lines. Nor does any other character other than tab.

 

[Marco Kalter]

Yes, this is indeed a known problem. The only work around is: don't use tabs.