PaperMC/nms-patches/BlockRedstoneWire.patch

--- ../work/decompile-8eb82bde//net/minecraft/server/BlockRedstoneWire.java	2014-11-28 17:43:42.953707438 +0000
+++ src/main/java/net/minecraft/server/BlockRedstoneWire.java	2014-11-28 17:38:19.000000000 +0000
@@ -8,6 +8,8 @@
 import java.util.Random;
 import java.util.Set;
 
+import org.bukkit.event.block.BlockRedstoneEvent; // CraftBukkit
+
 public class BlockRedstoneWire extends Block {
 
     public static final BlockStateEnum NORTH = BlockStateEnum.of("north", EnumRedstoneWireConnection.class);
@@ -123,6 +125,15 @@
         if (k > j - 1) {
             j = k;
         }
+        
+        // CraftBukkit start
+        if (i != j) {
+            BlockRedstoneEvent event = new BlockRedstoneEvent(world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ()), i, j);
+            world.getServer().getPluginManager().callEvent(event);
+
+            j = event.getNewCurrent();
+        }
+        // CraftBukkit end
 
         if (i != j) {
             iblockdata = iblockdata.set(BlockRedstoneWire.POWER, Integer.valueOf(j));