Program: 58428
Project: 58428
Buggy source:
@SuppressWarnings("String_Node_Str") @Override public void handleCommand(ICommandSender sender,String[] arguments){
  if (!CoreUtils.isOpOrServer(sender.getCommandSenderName())) {
    sender.addChatMessage(new ChatComponentText(CommandHandler.COMMAND_DISALLOWED));
    return;
  }
  int killCount=0;
  String curName;
  TObjectIntHashMap<String> names=new TObjectIntHashMap<String>();
  String target=null;
  boolean all=false;
  if (arguments.length > 1) {
    target=arguments[1].toLowerCase();
    all="String_Node_Str".equals(target);
  }
  for (  WorldServer theWorld : CoFHCore.server.worldServers) {
synchronized (theWorld) {
      List<Entity> list=theWorld.loadedEntityList;
      for (int i=list.size(); i-- > 0; ) {
        Entity entity=list.get(i);
        if (entity != null && !(entity instanceof EntityPlayer)) {
          curName=EntityList.getEntityString(entity);
          if (target != null | all) {
            if (all || curName != null && curName.toLowerCase().contains(target)) {
              names.adjustOrPutValue(curName,1,1);
              killCount++;
              theWorld.removeEntity(entity);
            }
          }
 else           if (entity instanceof EntityMob) {
            if (curName == null) {
              curName=entity.getClass().getName();
            }
            names.adjustOrPutValue(curName,1,1);
            killCount++;
            theWorld.removeEntity(entity);
          }
        }
      }
    }
  }
  if (killCount > 0) {
    String finalNames="String_Node_Str";
    TObjectIntIterator<String> it=names.iterator();
    while (it.hasNext()) {
      finalNames=finalNames + StringHelper.LIGHT_RED + it.value()+ StringHelper.WHITE+ "String_Node_Str"+ StringHelper.YELLOW+ it.key()+ StringHelper.WHITE+ "String_Node_Str";
    }
    finalNames=finalNames.substring(0,finalNames.length() - 2);
    sender.addChatMessage(new ChatComponentText("String_Node_Str" + killCount + (arguments.length > 1 ? "String_Node_Str" : "String_Node_Str")+ "String_Node_Str"+ finalNames+ "String_Node_Str"));
  }
 else {
    sender.addChatMessage(new ChatComponentText(arguments.length > 1 ? "String_Node_Str" + StringHelper.YELLOW + arguments[1]+ StringHelper.WHITE+ "String_Node_Str" : "String_Node_Str"));
  }
}

Fixed version (ground truth):
@SuppressWarnings("String_Node_Str") @Override public void handleCommand(ICommandSender sender,String[] arguments){
  if (!CoreUtils.isOpOrServer(sender.getCommandSenderName())) {
    sender.addChatMessage(new ChatComponentText(CommandHandler.COMMAND_DISALLOWED));
    return;
  }
  int killCount=0;
  String curName;
  TObjectIntHashMap<String> names=new TObjectIntHashMap<String>();
  String target=null;
  boolean all=false;
  if (arguments.length > 1) {
    target=arguments[1].toLowerCase();
    all="String_Node_Str".equals(target);
  }
  for (  WorldServer theWorld : CoFHCore.server.worldServers) {
synchronized (theWorld) {
      List<Entity> list=theWorld.loadedEntityList;
      for (int i=list.size(); i-- > 0; ) {
        Entity entity=list.get(i);
        if (entity != null && !(entity instanceof EntityPlayer)) {
          curName=EntityList.getEntityString(entity);
          if (target != null | all) {
            if (all || curName != null && curName.toLowerCase().contains(target)) {
              names.adjustOrPutValue(curName,1,1);
              killCount++;
              theWorld.removeEntity(entity);
            }
          }
 else           if (entity instanceof EntityMob) {
            if (curName == null) {
              curName=entity.getClass().getName();
            }
            names.adjustOrPutValue(curName,1,1);
            killCount++;
            theWorld.removeEntity(entity);
          }
        }
      }
    }
  }
  if (killCount > 0) {
    String finalNames="String_Node_Str";
    TObjectIntIterator<String> it=names.iterator();
    while (it.hasNext()) {
      it.advance();
      finalNames=finalNames + StringHelper.LIGHT_RED + it.value()+ StringHelper.WHITE+ "String_Node_Str"+ StringHelper.YELLOW+ it.key()+ StringHelper.WHITE+ "String_Node_Str";
    }
    finalNames=finalNames.substring(0,finalNames.length() - 2);
    sender.addChatMessage(new ChatComponentText("String_Node_Str" + killCount + (arguments.length > 1 ? "String_Node_Str" : "String_Node_Str")+ "String_Node_Str"+ finalNames+ "String_Node_Str"));
  }
 else {
    sender.addChatMessage(new ChatComponentText(arguments.length > 1 ? "String_Node_Str" + StringHelper.YELLOW + arguments[1]+ StringHelper.WHITE+ "String_Node_Str" : "String_Node_Str"));
  }
}