From: Zaidy036@air.isp.spam   
      
   On 5/22/2020 10:30 AM, Tom Del Rosso wrote:   
   > The objective is to remove everything except digits 0-9 from a string.   
   >   
   > %alpha_substrings% does contain all possible non-numeric substrings   
   > (space separated), so this should remove them and leave only the digits.   
   >   
   > set "only_numbers=string"   
   > for %%t in (%alpha_substrings%) do (   
   >          call set "only_numbers=%%only_numbers:%%t= %%"   
   > )   
   >   
   > But some characters in the non-numeric substrings, like =, don't get   
   > removed because they are never included in %%t.   
   >   
   > If FOR/F is used then it includes those characters because they are not   
   > seen as delimiters, but it doesn't spit them out one at a time in   
   > multiple loops.   
   >   
   > I'm tempted to use GWBASIC (MS just made it open-source!).   
   >   
   >   
   ASAP Utilities has this function (free for non-business use)   
      
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