bp_get_activity_comment_form_action()

	function bp_get_activity_comment_form_action() {

		/**
		 * Filters the activity comment form action URL.
		 *
		 * @since BuddyPress 1.2.0
		 *
		 * @param string $value URL to use in the comment form's action attribute.
		 */
		return apply_filters( 'bp_get_activity_comment_form_action', home_url( bp_get_activity_root_slug() . '/reply/' ) );
	}