Custom "Read More" Excerpt Link

<?php
add_filter( 'excerpt_more', 'scseed_custom_excerpt_more' );
function scseed_custom_excerpt_more( $more ) {
    return ' <a class="read-more" href="' . esc_url( get_permalink() ) . '">'
        . esc_html__( 'Read more &rarr;', 'textdomain' )
        . '</a>';
}