[SabreTools, Flags, DatFile] Add reverse base replacement

SabreTools/SabreTools.Help.cs

@@ -1227,7 +1227,7 @@ namespace SabreTools
 					null));
 			update.AddFeature("base-name", new Feature(
 				new List<string>() { "-bn", "--base-name" },
-				"Replace matching item names from a base DAT",
+				"Replace item names from base DATs in order",
 				FeatureType.Flag,
 				null));
 				update["base-name"].AddFeature("base-dat", new Feature(
@@ -1235,6 +1235,16 @@ namespace SabreTools
 					"Add a base DAT for replacing",
 					FeatureType.List,
 					null));
+			update.AddFeature("reverse-base-name", new Feature(
+				new List<string>() { "-rbn", "--reverse-base-name" },
+				"Replace item names from base DATs in reverse",
+				FeatureType.Flag,
+				null));
+				update["reverse-base-name"].AddFeature("base-dat", new Feature(
+					new List<string>() { "-bd", "--base-dat" },
+					"Add a base DAT for replacing",
+					FeatureType.List,
+					null));
 			update.AddFeature("game-name", new Feature(
 				new List<string>() { "-gn", "--game-name" },
 				"Filter by game name",

SabreTools/SabreTools.cs

@@ -830,6 +830,10 @@ namespace SabreTools
 							rar = 2;
 						}
 						break;
+					case "-rbn":
+					case "--reverse-base-name":
+						diffMode |= DiffMode.ReverseBaseReplace;
+						break;
 					case "-rd":
 					case "--root-dir":
 						root = args[++i];