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filter is not described

previous_comments_link_attributes filter-hook . WP 2.7.0

Filters the anchor tag attributes for the previous comments page link.

Usage

add_filter( 'previous_comments_link_attributes', 'filter_function_name_1875' );
function filter_function_name_1875( $attributes ){
	// filter...

	return $attributes;
}
$attributes(string)
Attributes for the anchor tag.

Where the hook is called

get_previous_comments_link()
wp-includes/link-template.php 2746
return '<a href="' . esc_url( get_comments_pagenum_link( $prevpage ) ) . '" ' . apply_filters( 'previous_comments_link_attributes', '' ) . '>' . preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label) .'</a>';

Where the hook is used (in WP core)

Does not used.