bp_search_reply_intro( $character_limit = 50 )

function bp_search_reply_intro( $character_limit = 50 ) {
	$content = '';

	switch ( get_post_type( get_the_ID() ) ) {
		case 'topic':
			$reply_content = bbp_get_topic_content( get_the_ID() );
			break;
		case 'reply':
			$reply_content = bbp_get_reply_content( get_the_ID() );
			break;
		default:
			$reply_content = get_the_content();
			break;
	}

	if ( $reply_content ) {
		$content     = wp_strip_all_tags( $reply_content, true );
		$search_term = BP_Search::instance()->get_search_term();

		$search_term_position = stripos( $content, $search_term );
		if ( $search_term_position !== false ) {
			$shortened_content = bp_search_result_match( $content, $search_term );

			//highlight search keyword

			$shortened_content = str_ireplace( $search_term, "<strong>" . $search_term . "</strong>", $shortened_content );
		} else {
			$shortened_content = substr( $content, 0, $character_limit );

			if ( strlen( $content ) > $character_limit ) {
				$shortened_content .= '&hellip;';
			}
		}

		$content = $shortened_content;
	}

	return apply_filters( 'bp_search_reply_intro', $content );
}