Beautifully commented code.

    private void updateChannel() {
        Utility.deleteMessage(channel.getMessages());
        StringBuilder builder = new StringBuilder();
        ArrayList<String> stringChunks = new ArrayList<>();
        String lastAttepmt;
        String imagePrefix = "#image#{";
        String imageSuffix = "}";
        String image;

        String[] contentsSplit;
        //prep for the everything...
        for (String s : infoContents) {
            if (!s.startsWith("//")) {
                //the file is first split up into 1800 or less chunks to make it easier to manage
                if ((builder + doTextTags(s) + "\n").length() > 1800) {
                    stringChunks.add(builder.toString());
                    builder.delete(0, builder.length());
                }
                builder.append(doTextTags(s) + "\n");
            }
        }
        stringChunks.add(builder.toString());
        builder.delete(0, builder.length());

        //actual code.
        for (String contents : stringChunks) {
            try {
                contents = TagSystem.tagNoNL(contents);
                //test to see if adding the next set will make the message to long and stops that.
                if ((builder.toString() + contents).length() > 1800) {
                    Utility.sendMessage(builder.toString(), channel);
                    Thread.sleep(2000);
                    builder.delete(0, builder.length());
                }
                do {
                    lastAttepmt = contents;
                    String toAppend = "";
                    if (contents.contains(imagePrefix)) {
                        //getting image file location
                        image = StringUtils.substringBetween(contents, imagePrefix, imageSuffix);
                        //splitting it so that the stuff before the image can be sent
                        contentsSplit = contents.split(Pattern.quote(imagePrefix + image + imageSuffix));

                        //if the first part of the array isn't empty get that.
                        if (contentsSplit != null && contentsSplit.length != 0) {
                            toAppend = contentsSplit[0];
                        }
                        //append that to the thinger
                        builder.append(toAppend);
                        //send what you have already and then clear the builder.
                        Utility.sendMessage(builder.toString(), channel);
                        builder.delete(0, builder.length());
                        Thread.sleep(2000);
                        //clear the stuff that was just sent and the the image code from things
                        contents = contents.replaceFirst(Pattern.quote(toAppend + imagePrefix + image + imageSuffix), "");
                        //set up the file
                        File file = new File(Utility.getGuildImageDir(guild.getID()) + image);
                        //if it exists send it if not send and error
                        if (!file.exists()) {
                            Utility.sendMessage(file.getPath() + " Does not Exist", channel);
                            Thread.sleep(2000);
                        } else {
                            Utility.sendFile("", channel, file);
                        }
                    }
                } while (!contents.equals(lastAttepmt) && contents.contains(imagePrefix));
                builder.append(contents);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        //after everything send the last set
        Utility.sendMessage(builder.toString(), channel);
    }