EE embed template used by jekyll exporter. You'll need to enable PHP parsing on INPUT to use this

comments.html

<?php 

global $IN; 
$IN->QSTR = '{embed:the_entry_id}' 

?> 

<div id="comments" data-entry-id="{embed:the_entry_id}" data-url-title="{embed:the_url_title}">
	<ul>
	{exp:comment:entries weblog="default_site" sort="asc"}
	<li class="comment">
		<a name="{comment_id}" class="comment-id anchor"></a>
		<div class="comment-author">{name}</div>
		<div class="comment-author-url">{url}</div>
		<div class="comment-date">{comment_date format="%m/%d/%Y %h:%i:%s %A"}</date>
		<div class="comment-body">{exp:markypants}{comment}{/exp:markypants}</div>
	</li>
	{/exp:comment:entries} 
	</ul>
</div>