public void registerHelp() {
	helps.clear();
	final HelpMap help = Bukkit.getHelpMap();
	final HelpTopic t = new GenericCommandHelpTopic(bukkitCommand);
	help.addTopic(t);
	helps.add(t);
	final HelpTopic aliases = help.getHelpTopic("Aliases");
	if (aliases instanceof IndexHelpTopic) {
		aliases.getFullText(Bukkit.getConsoleSender()); // CraftBukkit has a lazy IndexHelpTopic class (org.bukkit.craftbukkit.help.CustomIndexHelpTopic) - maybe its used for aliases as well
		try {
			final Field topics = IndexHelpTopic.class.getDeclaredField("allTopics");
			topics.setAccessible(true);
			@SuppressWarnings("unchecked")
			final ArrayList<HelpTopic> as = new ArrayList<>((Collection<HelpTopic>) topics.get(aliases));
			for (final String alias : activeAliases) {
				final HelpTopic at = new CommandAliasHelpTopic("/" + alias, "/" + getLabel(), help);
				as.add(at);
				helps.add(at);
			}
			Collections.sort(as, HelpTopicComparator.helpTopicComparatorInstance());
			topics.set(aliases, as);
		} catch (final Exception e) {
			Skript.outdatedError(e);//, "error registering aliases for /" + getName());
		}
	}
}
 

public CommandAliasHelpTopic(String alias, String aliasFor, HelpMap helpMap) {
    this.aliasFor = aliasFor.startsWith("/") ? aliasFor : "/" + aliasFor;
    this.helpMap = helpMap;
    this.name = alias.startsWith("/") ? alias : "/" + alias;
    Validate.isTrue(!this.name.equals(this.aliasFor), "Command " + this.name + " cannot be alias for itself");
    this.shortText = ChatColor.YELLOW + "Alias for " + ChatColor.WHITE + this.aliasFor;
}
 

public CommandAliasHelpTopic(final String alias, final String aliasFor, final HelpMap helpMap) {
	this.aliasFor = aliasFor.startsWith("/") ? aliasFor : "/" + aliasFor;
	this.helpMap = helpMap;
	name = alias.startsWith("/") ? alias : "/" + alias;
	Validate.isTrue(!name.equals(this.aliasFor), "Command " + name + " cannot be alias for itself");
	shortText = ChatColor.YELLOW + "Alias for " + ChatColor.WHITE + this.aliasFor;
}
 

public CommandAliasHelpTopic(String alias, String aliasFor, HelpMap helpMap) {
    this.aliasFor = aliasFor.startsWith("/") ? aliasFor : "/" + aliasFor;
    this.helpMap = helpMap;
    this.name = alias.startsWith("/") ? alias : "/" + alias;
    Validate.isTrue(!this.name.equals(this.aliasFor), "Command " + this.name + " cannot be alias for itself");
    this.shortText = ChatColor.YELLOW + "Alias for " + ChatColor.WHITE + this.aliasFor;
}
 

@Override
public boolean execute(CommandSender sender, String currentAlias, String[] args) {
    if (!testPermission(sender)) return true;

    String command;
    int pageNumber;
    int pageHeight;
    int pageWidth;

    if (args.length == 0) {
        command = "";
        pageNumber = 1;
    } else if (NumberUtils.isDigits(args[args.length - 1])) {
        command = StringUtils.join(ArrayUtils.subarray(args, 0, args.length - 1), " ");
        try {
            pageNumber = NumberUtils.createInteger(args[args.length - 1]);
        } catch (NumberFormatException exception) {
            pageNumber = 1;
        }
        if (pageNumber <= 0) {
            pageNumber = 1;
        }
    } else {
        command = StringUtils.join(args, " ");
        pageNumber = 1;
    }

    if (sender instanceof ConsoleCommandSender) {
        pageHeight = ChatPaginator.UNBOUNDED_PAGE_HEIGHT;
        pageWidth = ChatPaginator.UNBOUNDED_PAGE_WIDTH;
    } else {
        pageHeight = ChatPaginator.CLOSED_CHAT_PAGE_HEIGHT - 1;
        pageWidth = ChatPaginator.GUARANTEED_NO_WRAP_CHAT_PAGE_WIDTH;
    }

    HelpMap helpMap = Bukkit.getServer().getHelpMap();
    HelpTopic topic = helpMap.getHelpTopic(command);

    if (topic == null) {
        topic = helpMap.getHelpTopic("/" + command);
    }

    if (topic == null) {
        topic = findPossibleMatches(command);
    }

    if (topic == null || !topic.canSee(sender)) {
        sender.sendMessage(ChatColor.RED + "No help for " + command);
        return true;
    }

    ChatPaginator.ChatPage page = ChatPaginator.paginate(topic.getFullText(sender), pageNumber, pageWidth, pageHeight);

    StringBuilder header = new StringBuilder();
    header.append(ChatColor.YELLOW);
    header.append("--------- ");
    header.append(ChatColor.WHITE);
    header.append("Help: ");
    header.append(topic.getName());
    header.append(" ");
    if (page.getTotalPages() > 1) {
        header.append("(");
        header.append(page.getPageNumber());
        header.append("/");
        header.append(page.getTotalPages());
        header.append(") ");
    }
    header.append(ChatColor.YELLOW);
    for (int i = header.length(); i < ChatPaginator.GUARANTEED_NO_WRAP_CHAT_PAGE_WIDTH; i++) {
        header.append("-");
    }
    sender.sendMessage(header.toString());

    sender.sendMessage(page.getLines());

    return true;
}
 

public CustomIndexHelpTopic(HelpMap helpMap, String name, String shortText, String permission, List<String> futureTopics, String preamble) {
    super(name, shortText, permission, new HashSet<HelpTopic>(), preamble);
    this.helpMap = helpMap;
    this.futureTopics = futureTopics;
}
 

@Override
public HelpMap getHelpMap() {
    return helpMap;
}
 

@Override
public HelpMap getHelpMap() {
    throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
 

@Override
public HelpMap getHelpMap() {
    return null;
}
 

public CustomIndexHelpTopic(HelpMap helpMap, String name, String shortText, String permission, List<String> futureTopics, String preamble) {
    super(name, shortText, permission, new HashSet<HelpTopic>(), preamble);
    this.helpMap = helpMap;
    this.futureTopics = futureTopics;
}
 

@Override
public HelpMap getHelpMap() {
    return helpMap;
}
 

/**
 * Gets the {@link HelpMap} providing help topics for this server.
 *
 * @return a help map for this server
 */
public HelpMap getHelpMap();
 

/**
 * Gets the {@link HelpMap} providing help topics for this server.
 *
 * @return a help map for this server
 */
public static HelpMap getHelpMap() {
    return server.getHelpMap();
}