Program: 98929
Project: 98929
Buggy source:
public void onPlayerCommand(PlayerChatEvent event){
  String[] split=event.getMessage().split("String_Node_Str");
  Player player=event.getPlayer();
  if (split[0].equalsIgnoreCase("String_Node_Str")) {
    event.setCancelled(true);
    if (split.length == 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      if (!warning) {
        player.sendMessage(Color.RED + "String_Node_Str" + Color.WHITE+ "String_Node_Str");
        player.sendMessage("String_Node_Str");
        player.sendMessage("String_Node_Str" + Color.RED + "String_Node_Str"+ Color.WHITE+ "String_Node_Str");
        warning=true;
      }
 else {
        Converter.convert(player,plugin.getServer(),warpList);
        warning=false;
      }
    }
 else     if ((split.length == 2 || (split.length == 3 && isInteger(split[2]))) && split[1].equalsIgnoreCase("String_Node_Str")) {
      Lister lister=new Lister(warpList);
      lister.addPlayer(player);
      if (split.length == 3) {
        int page=Integer.parseInt(split[2]);
        if (page < 1) {
          player.sendMessage(Color.RED + "String_Node_Str");
          return;
        }
 else         if (page > lister.getMaxPages()) {
          player.sendMessage(Color.RED + "String_Node_Str" + lister.getMaxPages()+ "String_Node_Str");
          return;
        }
        lister.setPage(page);
      }
 else {
        lister.setPage(1);
      }
      lister.list();
    }
 else     if (split.length > 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      String name="String_Node_Str";
      for (int i=2; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      Searcher searcher=new Searcher(warpList);
      searcher.addPlayer(player);
      searcher.setQuery(name);
      searcher.search();
    }
 else     if (split.length > 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      String name="String_Node_Str";
      for (int i=2; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.addWarp(name,player);
    }
 else     if (split.length > 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      String name="String_Node_Str";
      for (int i=2; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.deleteWarp(name,player);
    }
 else     if (split.length > 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      String name="String_Node_Str";
      for (int i=2; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.privatize(name,player);
    }
 else     if (split.length > 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      String name="String_Node_Str";
      for (int i=2; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.publicize(name,player);
    }
 else     if (split.length > 3 && split[1].equalsIgnoreCase("String_Node_Str")) {
      Player invitee=plugin.getServer().getPlayer(split[2]);
      String inviteeName=(invitee == null) ? split[2] : invitee.getName();
      String name="String_Node_Str";
      for (int i=3; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.invite(name,player,inviteeName);
    }
 else     if (split.length > 3 && split[1].equalsIgnoreCase("String_Node_Str")) {
      Player invitee=plugin.getServer().getPlayer(split[2]);
      String inviteeName=(invitee == null) ? split[2] : invitee.getName();
      String name="String_Node_Str";
      for (int i=3; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.uninvite(name,player,inviteeName);
    }
 else     if (split.length > 1) {
      String name="String_Node_Str";
      for (int i=1; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.warpTo(name,player);
    }
 else {
      player.sendMessage(Color.RED + "String_Node_Str");
    }
  }
}

Fixed version (ground truth):
public void onPlayerCommand(PlayerChatEvent event){
  String[] split=event.getMessage().split("String_Node_Str");
  Player player=event.getPlayer();
  if (split[0].equalsIgnoreCase("String_Node_Str")) {
    event.setCancelled(true);
    if (split.length == 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      if (!warning) {
        player.sendMessage(ChatColor.RED + "String_Node_Str" + ChatColor.WHITE+ "String_Node_Str");
        player.sendMessage("String_Node_Str");
        player.sendMessage("String_Node_Str" + ChatColor.RED + "String_Node_Str"+ ChatColor.WHITE+ "String_Node_Str");
        warning=true;
      }
 else {
        Converter.convert(player,plugin.getServer(),warpList);
        warning=false;
      }
    }
 else     if ((split.length == 2 || (split.length == 3 && isInteger(split[2]))) && split[1].equalsIgnoreCase("String_Node_Str")) {
      Lister lister=new Lister(warpList);
      lister.addPlayer(player);
      if (split.length == 3) {
        int page=Integer.parseInt(split[2]);
        if (page < 1) {
          player.sendMessage(ChatColor.RED + "String_Node_Str");
          return;
        }
 else         if (page > lister.getMaxPages()) {
          player.sendMessage(ChatColor.RED + "String_Node_Str" + lister.getMaxPages()+ "String_Node_Str");
          return;
        }
        lister.setPage(page);
      }
 else {
        lister.setPage(1);
      }
      lister.list();
    }
 else     if (split.length > 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      String name="String_Node_Str";
      for (int i=2; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      Searcher searcher=new Searcher(warpList);
      searcher.addPlayer(player);
      searcher.setQuery(name);
      searcher.search();
    }
 else     if (split.length > 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      String name="String_Node_Str";
      for (int i=2; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.addWarp(name,player);
    }
 else     if (split.length > 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      String name="String_Node_Str";
      for (int i=2; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.deleteWarp(name,player);
    }
 else     if (split.length > 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      String name="String_Node_Str";
      for (int i=2; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.privatize(name,player);
    }
 else     if (split.length > 2 && split[1].equalsIgnoreCase("String_Node_Str")) {
      String name="String_Node_Str";
      for (int i=2; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.publicize(name,player);
    }
 else     if (split.length > 3 && split[1].equalsIgnoreCase("String_Node_Str")) {
      Player invitee=plugin.getServer().getPlayer(split[2]);
      String inviteeName=(invitee == null) ? split[2] : invitee.getName();
      String name="String_Node_Str";
      for (int i=3; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.invite(name,player,inviteeName);
    }
 else     if (split.length > 3 && split[1].equalsIgnoreCase("String_Node_Str")) {
      Player invitee=plugin.getServer().getPlayer(split[2]);
      String inviteeName=(invitee == null) ? split[2] : invitee.getName();
      String name="String_Node_Str";
      for (int i=3; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.uninvite(name,player,inviteeName);
    }
 else     if (split.length > 1) {
      String name="String_Node_Str";
      for (int i=1; i < split.length; i++) {
        name+=split[i];
        if (i + 1 < split.length)         name+="String_Node_Str";
      }
      warpList.warpTo(name,player);
    }
 else {
      player.sendMessage(ChatColor.RED + "String_Node_Str");
    }
  }
}