Source Reference:

• Component: bbPress :: bbp-topic

  File: /bbp-includes/bbp-topic-template.php :: Trac Source Line: 702

  			if ( $wp_rewrite->using_permalinks() )
  				$pagination_links = str_replace( $wp_rewrite->pagination_base . '/1/', '', $pagination_links );
  			else
  				$pagination_links = str_replace( '&paged=1', '', $pagination_links );
  
  			// Add before and after to pagination links
  			$pagination_links = $before . $pagination_links . $after;
  		}
  
  		return apply_filters( 'bbp_get_topic_pagination', $pagination_links, $args );
  	}
  
  /**
   * Append revisions to the topic content
   *
   * @since bbPress (r2782)
   *
   * @param string $content Optional. Content to which we need to append the revisions to
   * @param int $topic_id Optional. Topic id
   * @uses bbp_get_topic_revision_log() To get the topic revision log