added alternate pseudo-algorithm

Author: howcom

css3-multicol/Overview.src.html

@@ -812,42 +812,34 @@ <h3>Pseudo-algorithm</h3>
 
 <pre>
 
-(01)  if ((column-width = auto) and (column-count = auto)) or
-(02)     ((available-width = unknown) and (column-count = auto)) then
+(01)  if ((column-width = auto) and (column-count = auto)) then
+        exit; /* not a multicol element */
+
+(02)  if ((available-width = unknown) and (column-count = auto)) then
 (03)    exit; /* no columns */
-(04)  fi
-(05)  
+
 (06)  if (available-width = unknown) and (column-count != auto) and (column-width != auto) then
 (07)    N := column-count;  
 (08)    W := column-width;
 (09)    exit;
-(10)  fi
 
 (12)  if (available-width = unknown) then
 (13)    available-width := shrink-to-fit;
-(14)  fi
-
-/* the next block is used when column-count is set, and column-width is auto  */
 
-(16)  if (column-width = auto) then
+(16)  if (column-width = auto) and (column-count != auto) then
 (18)    N := column-count;
 (19)    W := max(0, (available-width - ((N - 1) * column-gap))/N);
         exit;
-      fi
 
-/* the next block is used when column-width is set, and column-count is auto */
-   
-(27)  if (column-count = auto) then
+(27)  if (column-count = auto) and (column-width != auto) then
 (32)    N := min(1, floor((available-width + column-gap) / (column-width + column-gap)));
 (33)    W := ((available-width + column-gap) / N) - column-gap;
         exit;
-      fi 
-
-/* the next block is used if both column-count and column-width are set */
-
-(39)  N := min(column-count, floor((available-width + column-gap) / (column-width + column-gap)))
-(40)  W := ((available-width + column-gap) / N) - column-gap;
 
+      if (column-count != auto) and (column-width != auto) then
+(39)    N := min(column-count, floor((available-width + column-gap) / (column-width + column-gap)))
+(40)    W := ((available-width + column-gap) / N) - column-gap;
+        exit
 </pre>