Make it an against flag instead

SabreTools.Library/DatFiles/DatFile.cs

@@ -263,6 +263,7 @@ namespace SabreTools.Library.DatFiles
         /// <param name="filter">Filter object to be passed to the DatItem level</param>
         /// <param name="updateFields">List of Fields representing what should be updated [only for base replacement]</param>
         /// <param name="onlySame">True if descriptions should only be replaced if the game name is the same, false otherwise [only for base replacement]</param>
+        /// <param name="byGame">True if diffing is by Game, false if diffing is by hash [only for against]</param>
         public void DetermineUpdateType(
             List<string> inputPaths,
             List<string> basePaths,
@@ -272,7 +273,8 @@ namespace SabreTools.Library.DatFiles
             bool skip,
             Filter filter,
             List<Field> updateFields,
-            bool onlySame)
+            bool onlySame,
+            bool byGame)
         {
             // Ensure we only have files in the inputs
             List<ParentablePath> inputFileNames = DirectoryExtensions.GetFilesOnly(inputPaths, appendparent: true);
@@ -319,12 +321,11 @@ namespace SabreTools.Library.DatFiles
             }
 
             // If we have a diff against mode
-            else if (updateMode.HasFlag(UpdateMode.DiffAgainst)
-                || updateMode.HasFlag(UpdateMode.DiffGame))
+            else if (updateMode.HasFlag(UpdateMode.DiffAgainst))
             {
                 // Populate the combined data
                 PopulateUserData(baseFileNames, filter);
-                DiffAgainst(inputFileNames, outDir, inplace, filter, updateMode.HasFlag(UpdateMode.DiffGame));
+                DiffAgainst(inputFileNames, outDir, inplace, filter, byGame);
             }
 
             // If we have one of the base replacement modes

SabreTools.Library/Data/Flags.cs

@@ -257,12 +257,11 @@ namespace SabreTools.Library.Data
 
         // Base diffs
         DiffAgainst = 1 << 5,
-        DiffGame = 1 << 6,
 
         // Special update modes
-        Merge = 1 << 7,
-        BaseReplace = 1 << 8,
-        ReverseBaseReplace = 1 << 9,
+        Merge = 1 << 6,
+        BaseReplace = 1 << 7,
+        ReverseBaseReplace = 1 << 8,
 
         // Combinations
         AllDiffs = DiffDupesOnly | DiffNoDupesOnly | DiffIndividualsOnly,

SabreTools.Library/README.1ST

@@ -1205,15 +1205,10 @@ Options:
 			  Add a DAT or folder of DATs to the base set to be used for all
 			  operations. Multiple instances of this flag are allowed.
 
-	  -dga, --diff-game		Diff all inputs by game against a set of base DATs
-		  This flag will enable a special type of diffing in which a set of base
-		  DATs are used as a comparison point for each of the input DATs by game.
-		  This allows users to get a slightly different output to cascaded
-		  diffing, which may be more useful in some cases.
-
-		  -bd=, --base-dat=		   Add a base DAT for processing
-			  Add a DAT or folder of DATs to the base set to be used for all
-			  operations. Multiple instances of this flag are allowed.
+		  -bg, --by-game		   Diff against by game instead of hashes
+			  By default, diffing against uses hashes to determine similar files.
+			  This flag enables using using each game as a comparision point
+			  instead.
 
 	  -br, --base-replace		 Replace from base DATs in order
 		  By default, no item names are changed except when there is a merge