From: t.ment@protocol.invalid   
      
   On Mon, 11 Nov 2019 20:25:58 +0300, Anton Shepelev wrote:   
      
   >> Reorganinze  the  code to do the  test first. Then   
   >> you know in advance whether or  not  what  follows   
   >> will succeed.   
      
   > That  is  slighty dangerous because will not work if   
   > something happens between the NUL  test  the  actual   
   > output.   
      
   What else but disk full?   
      
   You may need more than batch code to check that on MSDOS. Seems like I   
   read about it in LaFore's Assembly Language Primer.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)