From: jj4public@vfemail.net   
      
   On Tue, 4 Dec 2018 23:25:47 -0000 (UTC), Batchman wrote:   
   > You need to test that the `value' being returned in the num variable is   
   > acceptable to your program.   
   >   
   > set ok=   
   > for %%n in (1 2 3 4 5) do if (%%n)==(%num%) set ok=!   
   > if not (%ok%)==() goto task%num%   
   > REM drops down for incorrect input   
   > echo Invalid input, dummy!   
   >   
   > NOTE haven't tested this, leaving that for you to complete.   
      
   Well, that's the same as refactoring which I'm trying to avoid. The question   
   is how to prevent the abrupt batch termination, if it's even possible. It's   
   not how to prevent the GOTO command to be called with non existing label.   
      
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