From: porkchop@invalid.foo   
      
   On Fri, 21 Nov 2025 18:41:01 -0000 (UTC), Michael Sanders wrote:   
      
   > So strspn, perfect for what I need!   
   >   
   > before:   
   >   
   > int ok = 1;   
   >   
   > if (strlen(colorSpec) == 4) {   
   >     for (int i = 0; i < 4; i++) {   
   >         char c = colorSpec[i];   
   >         if (c < '1' || c > '8') { ok = 0; break; }   
   >     }   
   > } else ok = 0;   
   >   
   > after:   
   >   
   > strspn() returns the length of the leading substring   
   > consisting ONLY of characters in the allowed set...   
   >   
   > if (strlen(colorSpec) != 4 && strspn(colorSpec, "12345678") = 4) FAIL;   
      
   Actually is should be:   
      
   if (strlen(colorSpec) != 4 || strspn(colorSpec, "12345678") != 4) FAIL;   
      
   Excuse the extra posts, got excited.   
      
   --   
   :wq   
   Mike Sanders   
      
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