Doodlebee

Simple plugin to show/hide comment replies, rather than have them all listed. An options page makes it really easy to change different parts of your comment calls.
<h4>Features</h4>
This keeps the default “<a href="https://codex.wordpress.org/Function_Reference/wp_list_comments" rel="nofollow ugc"><code>wp_list_comments()</code></a>” features. A clickable span that triggers the action to expand the replies is also added.
New features are including easing options, as well as allowing images. An options page has been added for further customizations, making it even easier to use.
<h3>Other Info</h3>
<h4>Known Issues</h4>
None at this time.
<a href="http://brassblogs.com/contact" rel="nofollow ugc">Contact Shelly</a>
Given that this is free, I offer limited support. If you have issues with the plugin working I will do whatever I can to help you fix the issue, but when it comes to customization, I’m in limited supply. I’ll do what I can, but no guarantees. This is your standard “as is” application. In all honesty, ask customization questions in the forums – if I can’t help, perhaps someone else can. (If you want to hire me to customize it, that’s another story – feel free to contact me to do so!)
PLEASE NOTE that the WordPress support system DOES NOT notify me when someone leaves a support question. It requires me to come back and check manually to see if anyone has had an issue. Sometimes, I don’t get to do that for a while. If you left a support request on the forums, and it’s been at least a week since you left it with no response, please drop me an email to let me know so I can attempt to help you out. I’m pretty good at helping out – but I’m not so good at coming to check the forums – especially when I’m busy with client work.

jQuery Comment Replies

Make your multi-level comment replies show on demand with a slick jQuery slideToggle() action.

mahlzeit

You invoke a macro by typing a special command in your blog post:
[[keyword]]
Upon reading this command, the PHP function named “macro_keyword” is called and 
its output is inserted on the page.
You can also pass a parameter to the macro:
[[keyword][param]]
Or multiple parameters:
[[keyword][param1][param2]]
The parameters are separated by the ][ characters, or rather, you can look at it 
as a list of things in brackets surrounded by another pair of brackets.
The PHP file for this plugin has an example function that shows you how to write 
macros. It is called “[[test]]” and is defined in the function “macro_test”. The 
“test” macro takes up to two parameters, both optional.
New in 1.1: If you want to include the macros in RSS content, you will have to 
define a second function named “macro_rss_keyword”. If this function is not 
present, the macro will not be included in the RSS output.
<h3>Known Issues</h3>
<ul>
<li>
This is a quick hack, not extensively tested but it seems to work for me.
</li>
<li>
WordPress already adds the
</li>
</ul>
 and 
tags around the [[keyword]] before 
 the plugin is called — the plugin doesn’t remove those.
<ul>
<li>
You can’t use ” and ‘ (and possibly a handful of other characters) in 
parameters because WordPress replaces them with curly quotes before the 
plugin has a chance to parse them. You can use spaces, though.
</li>
<li>
Maybe pass an $is_rss parameter instead of using 2 separate functions?
</li>
<li>
Maybe change syntax to:  ?!
</li>
</ul>
<h3>About</h3>
<ul>
<li>
Version 1.1 (8 June 2007) – The parameter separator is now ][ instead of |. 
Added macro_rss_* functions for the RSS content.
</li>
<li>
Version 1.0 (7 June 2007) – First version
</li>
</ul>
Written by Matthijs Hollemans
http://www.hollemansproductions.com/wordpress-macro-expander-plugin.html

Macro Expander

Replaces user-defined keywords in a blog post with the output from the corresponding user-defined PHP function.

jQuery Comment Replies vs Macro Expander