bp_get_signup_slug()

	function bp_get_signup_slug() {
		$bp = buddypress();

		if ( !empty( $bp->pages->register->slug ) ) {
			$slug = $bp->pages->register->slug;
		} elseif ( defined( 'BP_REGISTER_SLUG' ) ) {
			$slug = BP_REGISTER_SLUG;
		} else {
			$slug = 'register';
		}

		/**
		 * Filters the sign-up slug.
		 *
		 * @since BuddyPress 1.5.0
		 *
		 * @param string $slug Sign-up slug.
		 */
		return apply_filters( 'bp_get_signup_slug', $slug );
	}