WordPress at a glance
filter is not described

comment_reply_link filter-hook . WP 2.7.0

Filters the comment reply link.

Usage

add_filter( 'comment_reply_link', 'filter_function_name_5067', 10, 4 );
function filter_function_name_5067( $link, $args, $comment, $post ){
	// filter...

	return $link;
}
$link(string)
The HTML markup for the comment reply link.
$args(array)
An array of arguments overriding the defaults.
$comment(object)
The object of the comment being replied.
$post(WP_Post)
The WP_Post object.

Where the hook is called

get_comment_reply_link()
wp-includes/comment-template.php 1673
return apply_filters( 'comment_reply_link', $args['before'] . $link . $args['after'], $args, $comment, $post );

Where the hook is used (in WP core)

Does not used.