Program: 58091
Project: 58091
Buggy source:
@Override public boolean onCommand(final CommandSender sender,final Command cmd,final String commandLabel,final String[] args){
  final Player player=(sender instanceof Player) ? (Player)sender : null;
  if (!PlotMain.hasPermission(player,MAIN_PERMISSION))   return no_permission(player,MAIN_PERMISSION);
  if ((args.length < 1) || ((args.length >= 1) && (args[0].equalsIgnoreCase("String_Node_Str") || args[0].equalsIgnoreCase("String_Node_Str")))) {
    if (args.length < 2) {
      final StringBuilder builder=new StringBuilder();
      builder.append(C.HELP_INFO.s());
      for (      final SubCommand.CommandCategory category : SubCommand.CommandCategory.values()) {
        builder.append("String_Node_Str").append(C.HELP_INFO_ITEM.s().replaceAll("String_Node_Str",category.toString().toLowerCase()).replaceAll("String_Node_Str",category.toString()));
      }
      return PlayerFunctions.sendMessage(player,builder.toString());
    }
    final String cat=args[1];
    SubCommand.CommandCategory cato=null;
    for (    final SubCommand.CommandCategory category : SubCommand.CommandCategory.values()) {
      if (cat.equalsIgnoreCase(category.toString())) {
        cato=category;
        break;
      }
    }
    if (cato == null) {
      final StringBuilder builder=new StringBuilder();
      builder.append(C.HELP_INFO.s());
      for (      final SubCommand.CommandCategory category : SubCommand.CommandCategory.values()) {
        builder.append("String_Node_Str").append(C.HELP_INFO_ITEM.s().replaceAll("String_Node_Str",category.toString().toLowerCase()).replaceAll("String_Node_Str",category.toString()));
      }
      return PlayerFunctions.sendMessage(player,builder.toString());
    }
    final StringBuilder help=new StringBuilder();
    int page=0;
    boolean digit=true;
    String arg2;
    if (args.length > 2) {
      arg2=args[2];
    }
 else {
      arg2="String_Node_Str";
    }
    for (    final char c : arg2.toCharArray()) {
      if (!Character.isDigit(c)) {
        digit=false;
        break;
      }
    }
    if (digit) {
      page=Integer.parseInt(arg2);
      if (--page < 0) {
        page=0;
      }
    }
    for (    final String string : helpMenu(player,cato,page)) {
      help.append(string).append("String_Node_Str");
    }
    sender.sendMessage(ChatColor.translateAlternateColorCodes('&',help.toString()));
  }
 else {
    for (    final SubCommand command : subCommands) {
      if (command.cmd.equalsIgnoreCase(args[0]) || command.alias.equalsIgnoreCase(args[0])) {
        final String[] arguments=new String[args.length - 1];
        System.arraycopy(args,1,arguments,0,args.length - 1);
        if (command.permission.hasPermission(player)) {
          if ((player != null) || !command.isPlayer) {
            return command.execute(player,arguments);
          }
 else {
            return !PlayerFunctions.sendMessage(null,C.IS_CONSOLE);
          }
        }
 else {
          return no_permission(player,command.permission.permission.toLowerCase());
        }
      }
    }
    PlayerFunctions.sendMessage(player,C.NOT_VALID_SUBCOMMAND);
    final String[] commands=new String[subCommands.size()];
    for (int x=0; x < subCommands.size(); x++) {
      commands[x]=subCommands.get(x).cmd;
    }
    String command=new StringComparison(args[0],commands).getBestMatch();
    return PlayerFunctions.sendMessage(player,C.DID_YOU_MEAN,"String_Node_Str" + command);
  }
  return true;
}

Fixed version (ground truth):
@Override public boolean onCommand(final CommandSender sender,final Command cmd,final String commandLabel,final String[] args){
  final Player player=(sender instanceof Player) ? (Player)sender : null;
  if (!PlotMain.hasPermission(player,MAIN_PERMISSION))   return no_permission(player,MAIN_PERMISSION);
  if ((args.length < 1) || ((args.length >= 1) && (args[0].equalsIgnoreCase("String_Node_Str") || args[0].equalsIgnoreCase("String_Node_Str")))) {
    if (args.length < 2) {
      final StringBuilder builder=new StringBuilder();
      builder.append(C.HELP_INFO.s());
      for (      final SubCommand.CommandCategory category : SubCommand.CommandCategory.values()) {
        builder.append("String_Node_Str").append(C.HELP_INFO_ITEM.s().replaceAll("String_Node_Str",category.toString().toLowerCase()).replaceAll("String_Node_Str",category.toString()));
      }
      return PlayerFunctions.sendMessage(player,builder.toString());
    }
    final String cat=args[1];
    SubCommand.CommandCategory cato=null;
    for (    final SubCommand.CommandCategory category : SubCommand.CommandCategory.values()) {
      if (cat.equalsIgnoreCase(category.toString())) {
        cato=category;
        break;
      }
    }
    if (cato == null) {
      final StringBuilder builder=new StringBuilder();
      builder.append(C.HELP_INFO.s());
      for (      final SubCommand.CommandCategory category : SubCommand.CommandCategory.values()) {
        builder.append("String_Node_Str").append(C.HELP_INFO_ITEM.s().replaceAll("String_Node_Str",category.toString().toLowerCase()).replaceAll("String_Node_Str",category.toString()));
      }
      return PlayerFunctions.sendMessage(player,builder.toString());
    }
    final StringBuilder help=new StringBuilder();
    int page=0;
    boolean digit=true;
    String arg2;
    if (args.length > 2) {
      arg2=args[2];
    }
 else {
      arg2="String_Node_Str";
    }
    for (    final char c : arg2.toCharArray()) {
      if (!Character.isDigit(c)) {
        digit=false;
        break;
      }
    }
    if (digit) {
      page=Integer.parseInt(arg2);
      if (--page < 0) {
        page=0;
      }
    }
    for (    final String string : helpMenu(player,cato,page)) {
      help.append(string).append("String_Node_Str");
    }
    sender.sendMessage(ChatColor.translateAlternateColorCodes('&',help.toString()));
  }
 else {
    for (    final SubCommand command : subCommands) {
      if (command.cmd.equalsIgnoreCase(args[0]) || command.alias.contains(args[0].toLowerCase())) {
        final String[] arguments=new String[args.length - 1];
        System.arraycopy(args,1,arguments,0,args.length - 1);
        if (command.permission.hasPermission(player)) {
          if ((player != null) || !command.isPlayer) {
            return command.execute(player,arguments);
          }
 else {
            return !PlayerFunctions.sendMessage(null,C.IS_CONSOLE);
          }
        }
 else {
          return no_permission(player,command.permission.permission.toLowerCase());
        }
      }
    }
    PlayerFunctions.sendMessage(player,C.NOT_VALID_SUBCOMMAND);
    final String[] commands=new String[subCommands.size()];
    for (int x=0; x < subCommands.size(); x++) {
      commands[x]=subCommands.get(x).cmd;
    }
    String command=new StringComparison(args[0],commands).getBestMatch();
    return PlayerFunctions.sendMessage(player,C.DID_YOU_MEAN,"String_Node_Str" + command);
  }
  return true;
}