/* Include Subtitle to Excerpt */
function add_subtitle_to_excerpt( $excerpt, $post_id, $excerpt_length, $excerpt_more ) {
	$subtitle = wp_kses( get_post_meta( $post_id, 'post_subtitle', true ), wp_kses_allowed_html() );
	if ( ! empty( $subtitle ) ) {
		$excerpt = $subtitle . ' ' . $excerpt;
	}
	$excerpt = wp_trim_words( $excerpt, $excerpt_length, $excerpt_more );
	$excerpt = preg_replace( '/\[[^\]]+\]/', '', $excerpt );

	return $excerpt;
}
add_filter( 'jnews_module_excerpt', 'add_subtitle_to_excerpt', null, 4 );