Make lrbuild tool use history.

worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/LongRangeBuildTool.java

@@ -26,6 +26,7 @@
 import com.sk89q.worldedit.entity.Player;
 import com.sk89q.worldedit.extension.platform.Actor;
 import com.sk89q.worldedit.extension.platform.Platform;
+import com.sk89q.worldedit.extent.inventory.BlockBag;
 import com.sk89q.worldedit.function.mask.Mask;
 import com.sk89q.worldedit.function.pattern.Pattern;
 import com.sk89q.worldedit.math.BlockVector3;
@@ -55,41 +56,56 @@ public boolean canUse(Actor player) {
     public boolean actSecondary(Platform server, LocalConfiguration config, Player player, LocalSession session) {
         Location pos = getTargetFace(player);
         if (pos == null) return false;
-        try (EditSession eS = session.createEditSession(player)) {
-            eS.disableBuffering();
-            BlockVector3 blockPoint = pos.toVector().toBlockPoint();
-            BaseBlock applied = secondary.apply(blockPoint);
-            if (applied.getBlockType().getMaterial().isAir()) {
-                eS.setBlock(blockPoint, secondary);
-            } else {
-                eS.setBlock(pos.toVector().subtract(pos.getDirection()).toBlockPoint(), secondary);
+        BlockBag bag = session.getBlockBag(player);
+
+        try (EditSession editSession = session.createEditSession(player)) {
+            try {
+                editSession.disableBuffering();
+                BlockVector3 blockPoint = pos.toVector().toBlockPoint();
+                BaseBlock applied = secondary.apply(blockPoint);
+                if (applied.getBlockType().getMaterial().isAir()) {
+                    editSession.setBlock(blockPoint, secondary);
+                } else {
+                    editSession.setBlock(pos.toVector().subtract(pos.getDirection()).toBlockPoint(), secondary);
+                }
+            } catch (MaxChangedBlocksException ignored) {
+            } finally {
+                session.remember(editSession);
+            }
+        } finally {
+            if (bag != null) {
+                bag.flushChanges();
             }
-            return true;
-        } catch (MaxChangedBlocksException ignored) {
-            // one block? eat it
         }
-        return false;
-
+        return true;
     }
 
     @Override
     public boolean actPrimary(Platform server, LocalConfiguration config, Player player, LocalSession session) {
         Location pos = getTargetFace(player);
         if (pos == null) return false;
-        try (EditSession eS = session.createEditSession(player)) {
-            eS.disableBuffering();
-            BlockVector3 blockPoint = pos.toVector().toBlockPoint();
-            BaseBlock applied = primary.apply(blockPoint);
-            if (applied.getBlockType().getMaterial().isAir()) {
-                eS.setBlock(blockPoint, primary);
-            } else {
-                eS.setBlock(pos.toVector().subtract(pos.getDirection()).toBlockPoint(), primary);
+        BlockBag bag = session.getBlockBag(player);
+
+        try (EditSession editSession = session.createEditSession(player)) {
+            try {
+                editSession.disableBuffering();
+                BlockVector3 blockPoint = pos.toVector().toBlockPoint();
+                BaseBlock applied = primary.apply(blockPoint);
+                if (applied.getBlockType().getMaterial().isAir()) {
+                    editSession.setBlock(blockPoint, primary);
+                } else {
+                    editSession.setBlock(pos.toVector().subtract(pos.getDirection()).toBlockPoint(), primary);
+                }
+            } catch (MaxChangedBlocksException ignored) {
+            } finally {
+                session.remember(editSession);
+            }
+        } finally {
+            if (bag != null) {
+                bag.flushChanges();
             }
-            return true;
-        } catch (MaxChangedBlocksException ignored) {
-            // one block? eat it
         }
-        return false;
+        return true;
     }
 
     private Location getTargetFace(Player player) {