WordPress at a glance
function is not described

wp_comment_form_unfiltered_html_nonce() WP 2.1.3

Displays form token for unfiltered comments.

Will only display nonce token if the current user has permissions for unfiltered html. Won't display the token for other users.

The function was backported to 2.0.10 and was added to versions 2.1.3 and above. Does not exist in versions prior to 2.0.10 in the 2.0 branch and in the 2.1 branch, prior to 2.1.3. Technically added in 2.2.0.

Backported to 2.0.10.

No Hooks.

Return

Null. Nothing.

Usage

wp_comment_form_unfiltered_html_nonce();

Changelog

Since 2.1.3 Introduced.

Code of wp_comment_form_unfiltered_html_nonce() WP 5.5.1

<?php
function wp_comment_form_unfiltered_html_nonce() {
	$post    = get_post();
	$post_id = $post ? $post->ID : 0;

	if ( current_user_can( 'unfiltered_html' ) ) {
		wp_nonce_field( 'unfiltered-html-comment_' . $post_id, '_wp_unfiltered_html_comment_disabled', false );
		echo "<script>(function(){if(window===window.parent){document.getElementById('_wp_unfiltered_html_comment_disabled').name='_wp_unfiltered_html_comment';}})();</script>\n";
	}
}