Good day folks, I almost killed my self searching how to add current property to pagination inside posts.
This is not question, I just want to share solution I came up with to make some one life easier.
So here we go.
In same page or inside function.php add this code:
In my example I used <b></b>, you can easily change that, by changing 'highlight' => 'b' to anything you need.
Now where you want your pagination to be add:
<?php wp_link_page_modified('before=<div id="pagination">&after=</div>&link_before =<span>&link_after=</span>'); ?>
And your end html will be something like:
<div id="pagination"> <b>1</b> <a href="#">2</a></div>
Thats all. Hope you will find that helpful.